CNC TURNING &#8211; CNC Machining|CNC Milling & Turning Services|CNC turned parts|

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prehard steel turned pins part by CNC lathe machine

What is CNC machining service?最先出现在CNC Machining|CNC Milling & Turning Services|CNC turned parts|。

4140HD STEEL Turned pins for DEPLOYABLE SCISSOR STRUCTURE TOOL

KYLT Precision CNC Machining — Sat, 12 Mar 2022 04:17:10 +0000

Turned Pins, made by CNC turning parts machining. Adopts CNC lathe machine to cut extra steel materials from steel bar. The CNC turning process features turned part with smooth furface, precision tolearnce.

This is for a heavy equipment scissors. Whole tool consist of 76 pins of 7 different types.

deployalbe scissor structure tool

Steel Turned Pins Material

The 4140 HD STEEL material is required. To meet local steel type. We choose 40CRMNMO (CHINA GB standard) to machine the Pins.
4140 HD steel is one kind prehard steel, which with good strength. This prehard material saves the step of hardening. If pins be hard after machining, which can lead to heat based distortions. CNC lathe machine working with the hardened steel easily.

Nearly Steel Types suitable for turned pins:

Japan standard: JIS-scm440

Euro standard:EN-42CRMO4

Steel TRUNED PINS Machining Tolearnces & Dimensions:

In this project, Steel turning machined pins involve: scissor center pins, outer pins, terminal pins etc.

All turned pins tolerance +- 0.12mm. Smooth surface, no flash and burr.

More KYLT Turning and Milling Machining Services & Products Information:

Visit CNC Milling Parts, EDM/WEDM Parts , CNC Machining Service, Rapid Prototype for your reference.

To get more information about KYLT products and services, please e-mail to cnkylt@aliyun.com to get a FREE quote.

KYLT Precision CNC machining services (milling & turning service), Fast prototyping, Fixture/Jig/Tooling making, Aluminum die casting & plastic injection parts. Email:cnkylt@aliyun.com +008615195010186

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4140HD STEEL Turned pins for DEPLOYABLE SCISSOR STRUCTURE TOOL最先出现在CNC Machining|CNC Milling & Turning Services|CNC turned parts|。

SLOTTED Stainless steel screw machined by CNC lathe

KYLT Precision CNC Machining — Tue, 13 Apr 2021 08:29:22 +0000

How to machine a stainless steel screw?

Normally, stainless steel screw is machined by forging, turning etc. Here, we intruduce a machining process of this screw for medical usage.

First, What is the Medical usage stainless steel screw structure?

Stainless steel screw for Medical usage

The Precision CNC turned Stainless steel Slotted screw.
Screw With slotted large cheese head.
Screw head edge with knurling treatment.
Screw bolt body not tapping structure, bolt Dia. 5mm.
Screw end Tapping structure M8.
Screw terminal is a cone structure.
Precision CNC turning service with small order and good quality: cnkylt@aliyun.com

slotted large cheese head medical usage screw

Second, The machining process of the medical screw by CNC lathe:

Stainless steel bar be turned to required smooth surface
Metal bar be cut to required block for NC lathe machining
Turning the screw bolt structure
Milling the Screw head by CNC machine
Screw head with knurling treatment

Youtube video show of this medical screw, please visit: https://youtu.be/qeDgjeVH_mo

Get A Quote for your CNC Turned Parts (aluminum, stainless steel, copper, iron materials allowed) Within 24hrs, Just send you drawings to : stonechenpeng@aliyun.com or Whatsapp: +008615195010186

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kylt Metal Alloy Die Casting, Injection, MACHINING SERVICES

KYLT Precision CNC Machining — Mon, 17 Feb 2020 02:52:30 +0000

Changzhou KYLT Co., Ltd focus on Aluminum, Zinc metal alloy Die casting services, Precision CNC machining services, Plastic Injection etc manufacturing.

KYLT production directly, our metal products and service involve:

Mould design & making

die casting mold

1.As per customers design and samples to make mold and produce Aluminum die casting parts or Zinc die casting parts.

Aluminum die casting part

2.According client’s 3D drawings or samples to make plastic molding parts.

plastic injection mold

Aluminum, Zinc alloy die casting parts

Zinc alloy injection part:

zinc die casting part

2. Aluminum alloy injection part:

aluminum injection part

CNC machining, Drilling, Tapping Services:

CNC machining plastic fixture making service

Aluminum, Magnesium, Copper/Brass, Steel Iron, sTAINLESS STEEL, PLASTIC etc CNC Precision machining parts

1.Aluminum alloy CNC milling part

Aluminum alloy CNC milling part

2.Magnesium Alloy CNC machining part

Magnesium Alloy CNC machining part

3.Copper, Brass CNC milling machined part

Copper, Brass CNC machined part

4. Steel parts milled by CNC machine center

Steel parts milled by CNC machine center

5.Stainless steel part by CNC milling

Stainless steel part by CNC milling

6.Plastic material CNC milling

Plastic material CNC milling

7.Aluminum Precision NC turned part

Aluminum Precision NC turned part

8.Steel NC turning part

Steel NC turning part

9.Stainless steel NC turning part

KYLT Stainless steel cnc turning service

10.Plastic material (POM) turning service

plastic turning part

Finished surface treatment: Painting, powder coating, anodizing, plating, polishing, shot blasting…

anodized CNC machined part

machined part with painting

Plastic injection molding products

PLASTIC INJECTION SERVICE

Assembly as per customers demand after machining or injection

fixture assembly

Shipping in time by vessel, air, express(TNT, DHL, FedEx, UPS, EMS…)

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kylt Metal Alloy Die Casting, Injection, MACHINING SERVICES最先出现在CNC Machining|CNC Milling & Turning Services|CNC turned parts|。

KYLT Precision CNC machining for Medical devices making

KYLT Precision CNC Machining — Mon, 10 Feb 2020 01:04:34 +0000

Medical devices making such as operating forceps, they are by WEDM, EDM, CNC milling, Polishing etc, metal making and manufacturing processes. In fact, the medical devices making processes normally involve: metal making processes and plastic injection processes.

what is medical devices?

Medical devices are those equipment, instrumentation, equipment, calibration and other related similar items which used in the human body directly or indirectly.

operating forceps making

The treatment of the human body is mainly obtained through physical methods, not through pharmacology, immunization, metabolic methods. The state has strict legal regulations on the manufacture and application of medical devices, so it has clear provisions on the design, safety, stability and effectiveness of medical devices. Medical device parts processing accuracy directly affects the safety and reliability of medical devices, the CNC precision machining applications to ensure the precision of processing parts.

medical devices making

What is KYLT medical device making services?

KYLT as the terminal medical devices spare parts producer,provide WEDM,EDM,Precision CNC, Lathing,Tapping machining service as per clients drawings.

Here is forceps part, which making processed by WEDM(Wire Cut Electro Discharge Machining) firstly,then use CNC precision machining to got the drawing requirement.

operating forceps spare part making

Medical devices materials which by CNC machined involve: iron, steel, stainless steel, aluminum,titanium alloy etc.

stainless steel CNC turned part

Any questions about medical devices spare parts machining and making, please feel free contact with KYLT:

www.marketingthiink.com
www.kyltcn.com
+008615195010186
cnkylt@aliyun.com

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KYLT Precision CNC machining for Medical devices making最先出现在CNC Machining|CNC Milling & Turning Services|CNC turned parts|。

CNC machine tools CLASSIFICATION

KYLT Precision CNC Machining — Mon, 28 Oct 2019 06:54:55 +0000

There are many kinds and specifications of CNC machine tools, and the classification methods are different. Generally, it can be classified according to the following four principles according to functions and structures:

classification according to the control track of machine tool movement

(1) CNC machine tool controlled by point and position

Point control only needs to control the moving parts of machine tool to move from one point to another.

(2) linear control CNC machine tool

(3) contour control CNC machine tool

Contour control CNC machine tool is also called continuous control CNC machine tool. Its control feature is that it can control the displacement and speed of two or more motion coordinates at the same time.

CNC milling machine

The corresponding numerical control device is called contour control numerical control system.

According to the number of coordinate axes it controls, it can be divided into the following forms:

1. two axis linkage

2. two axle half linkage

3. three axis linkage:

Three axis linkage is generally divided into two categories: One is x / Y / Z three linear coordinate axis linkage, more used for CNC milling machine, machining center, etc. The other is to control not only the coordinates of two lines in X / Y / Z, but also the axis of rotation around one of them.

4.four axis linkage: simultaneously control X / Y / Z three linear coordinate axes and a rotation coordinate axis.

5.five axis linkage: in addition to controlling the linkage of X / Y / Z ﹣ three axes, it also controls the two axes of a, B and C that rotate around these linear axes, forming the simultaneous control of five axes linkage. At this time, the tool can be set in any direction of space.

CNC MILLING SERVICE

Classification according to servo control mode

(1) open loop control CNC machine tool

The feed servo drive of this kind of machine tool is open-loop.

(2) closed loop control machine tool

The feed servo drive of this kind of NC machine tool works in the way of closed-loop feedback control.

According to the difference between the installation position of the position feedback detection element and the feedback device used, it can be divided into two control modes: full closed loop and half closed loop.

(3) hybrid control CNC machine

The characteristics of the above control methods can be selectively centralized to form a hybrid control scheme.

Classification according to the functional level of CNC system

According to the function level of CNC system, CNC system is usually divided into three categories: low, medium and high.

(1) metal cutting

Refers to the use of turning, milling, collision, reaming, drilling, grinding, planing and other cutting processes of CNC machine tools. It can be divided into the following two categories.

① general CNC machine tool

② machining center

CNC milling

(2) metal forming

It refers to the numerical control machine tool with extrusion, punching, pressing, drawing and other forming processes, commonly used including numerical control press, numerical control bending machine, numerical control bending machine, numerical control spinning machine, etc.

(3) special processing

It mainly includes CNC WEDM, CNC EDM forming machine, CNC flame cutting machine, CNC laser processing machine, etc.

CARBON STEEL WEDM MACHINING

(4) measurement and drawing

There are mainly three coordinate measuring instruments, CNC tool setting instruments, CNC plotter, etc.

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cnc machining center CUTTING TOOLS KNOWLEDGE

KYLT Precision CNC Machining — Mon, 28 Oct 2019 00:56:52 +0000

In CNC milling or lathing, Different shapes need use different cutting tools. This article stated some knowledge of cutter in CNC machining.

Aluminum Fast Prototypes by CNC milling

Basic classification of cutting tools

According to the end geometry:

Flat end milling cutter
Flat bottom R angle end milling cutter
Ball end milling cutter
Indexable inlaid end milling cutter

CNC machine cutters

Basic geometry of cutting tools

milling tool body

miller end

milling tool front terminal

For the cutting tools used for finishing, the cutting edge must have good profile accuracy.

Several possible profile deviations of cutting tools

Accurate contour;
The grinding process is not accurate enough, which results in irregular broken surface on the edge.
Radius deviation caused by inaccurate grinding process.

CUTTING TOOLS PROFILE DEVIATIONS

If the requirements for machining workpiece accuracy are very high, standard certified tools should be purchased from the tool manufacturer. KYLT CNC milling, CNC turning processes, adopt famous brand cutter to got high precision machined parts.

KYLT Aluminum CNC machining prototypes making service

On the premise of ensuring that the maximum overhang length of the tool shank and tool system does not exceed the specified value, in order to make the spindle operate accurately, the radial run out error of the tool must be detected at the tool shank and cutting edge respectively. If the radial run out error is too large, it will cause serious vibration of the spindle.

cutter radial run inspection

How to select suitable cutter

1) analyze the specific processing conditions, such as spindle and machine performance, tool clamping system, lubrication mode, etc.

2) analyze the material characteristics of the workpiece;

3) analyze the surface quality, machining accuracy requirements, cost, etc.

4) comprehensively consider various factors and make the optimal choice.

Calculation method of high speed cutting parameters

Three important formulas

Calculation method of high speed cutting parameters

Some important terms and processing parameters in high speed cutting

(1) cutting speed VC

Definition of cutting speed: VC = n * p * deff / 1000

VC refers to the appropriate cutting speed value suitable for high-speed machining of a workpiece material in the case of a specific tool. It refers to the linear speed of the tool.

cutting speed VC

How to set the value of cutting speed VC correctly:

Provided by tool supplier;
Refer to the existing experimental data;
Through a large number of cutting experiments to establish their own database.

VC value is an important basis for setting other cutting parameters correctly!

Effect of cutting speed on surface finish

EFFECT OF CUTTING SPEED ON SURFACE FINISH

Color comparison of iron chips produced at different cutting speeds

(2) effective tool diameter deff

Calculation of effective tool diameter and effective tool diameter.

EFFECTIVE TOOL DIAMETER

(3) feed rate of each edge FZ

Definition of feed per blade:

FEED RATE OF EACH EDGE

How to set the feed rate of each edge of the tool correctly:

Provided by cutting tool supplier;
Refer to the experimental data of other people’s research;
Through a large number of cutting experiments.

Whether the feed rate of each cutting edge is set correctly or not has a very important influence on the reasonable distribution of cutting load on the tool.

(4) axial and radial feed rate AP & AE

Calculation of axial feed:

Calculation of axial feed rate calculating example

The actual results will be affected by the spindle, tool and material.

The effect of AE and FZ on the finish

fz & ae cutting relationship

cutting finished surfaces

(5) calculation method of cutting parameters in high speed machining

CALCULATION METHOD OF CUTTING PARAMETERS IN HIGH SPEED MACHINING

(6) setting principle of CNC MACHINING parameters

In the process of high-speed machining, the machining parameters must be optimized and can not be set at will;
The value of cutting speed VC must be set correctly;
The feed rate of each edge FZ must be set correctly.

Reasonable value can not only bring the cutting efficiency of the tool to the limit, make full use of the tool, improve the machining quality and efficiency, but also will not affect the service life of the tool, so as to achieve the purpose of saving cost and achieving real high-speed machining.

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How to improve the machining quality of CNC machine

KYLT Precision CNC Machining — Wed, 23 Oct 2019 04:41:09 +0000

In order to got good machining quality of Machined work-pieces, the precision of CNC lathe, CNC router, CNC milling machine is the key element.

KYLT Aluminum extrusion profile CNC Milling

Measures to improve the machining quality of CNC machine:

Ways to improve machining accuracy

There are many methods and measures to reduce errors in production practice. From the technical point of view of eliminating or reducing errors, these measures can be divided into the following categories.

Aluminum CNC machining prototype

(1) error prevention technology

Error prevention technology refers to taking corresponding measures to reduce or eliminate errors, that is to say, reducing error sources or changing the quantitative conversion relationship between error sources and machining errors.

In order to reduce or eliminate geometric errors, the following measures can be adopted:

The following carriage is used to eliminate the influence of radial force, and the reverse cutting is used to change the compression effect of axial force into tensile effect, and the elastic center is used to eliminate the possible bending deformation.

Solar panel holder by CNC machining and assembly

(2) error compensation technology

Error compensation technology refers to the existing conditions. Based on the analysis and measurement of these errors, an additional error is artificially introduced into the process system to offset the original error of the process system. In order to reduce or eliminate the machining error of parts.

KYLT Aluminum CNC lathing part service

(3) reduce the influence of cumulative error of CNC system

In the process of fast moving and interpolating operation, the CNC system will produce accumulated error. When it reaches a certain value, it will make the machine tool produce moving and positioning error, which will affect the machining accuracy. The following measures can reduce the cumulative error of CNC system.

Fast prototyping services

Try to program in absolute mode. The absolute mode is based on a fixed point (workpiece coordinate origin). Each program and the whole processing process are based on this. The incremental programming is based on the previous point, and the continuous execution of multiple programs will inevitably produce accumulated errors.

When the machine tool returns to the reference point, the coordinates will be cleared when inserting the command of returning to the reference point, thus eliminating the accumulated error of the numerical control system operation. It is beneficial to ensure the machining accuracy to insert the instruction back to the reference point properly in a long program. When there is a tool change request, you can return to the reference point to change the tool, thus killing two birds with one stone.

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How to improve the machining quality of CNC machine最先出现在CNC Machining|CNC Milling & Turning Services|CNC turned parts|。

Machining precision accuracy of NC & CNC machining parts

KYLT Precision CNC Machining — Tue, 22 Oct 2019 20:20:04 +0000

The machining parts quality includes Machining precision accuracy and Surface quality. Especially for NC lathing parts and CNC machining parts, they are require tight tolerance and good surface.

Precision Accuracy CNC lathing parts

What is machining precision accuracy?

Machining accuracy refers to the degree of conformity between the actual value and the ideal value of the geometric parameters (size, geometry and mutual position) of the parts after machining. The deviation between the actual value and the ideal value is the machining error. The machining error reflects the machining accuracy.

The machining accuracy of parts includes three aspects:

Dimensional accuracy
Geometric accuracy
Mutual position accuracy

There is a connection between these three factors.

Precision Accuracy CNC WEMD, Milling & Assembly part

In machining, the formation of the size, geometry and relative position between the surfaces of the parts mainly depends on the mutual position relationship between the workpiece and the tool in the process of cutting movement. The workpiece and cutter are installed on the fixture and machine tool, and are constrained by the fixture and machine tool.

Precision Accuracy CNC machining prototype

In machining, machine tool, fixture, cutter and workpiece constitute a complete system, which is called process system. The problem of machining accuracy of parts is essentially the accuracy of the whole process system.

Therefore, the designer should reasonably specify the machining parts precision accuracy according to their usage. According to the design requirements and production conditions, the technologists should adopt appropriate process methods to improve the productivity and reduce the cost as much as possible on the premise of ensuring the processing accuracy.

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How to reduce ALUMINUM Deformation in machining

KYLT Precision CNC Machining — Sat, 31 Aug 2019 02:56:07 +0000

Many reasons cause aluminium parts deformation, which are related to the material quality, the parts shape and the production conditions.

What cause aluminum deformetion?

There are 3mainly reasons:

deformation caused by internal stress of blank.
deformation caused by cutting force, cutting heat.
deformation caused by clamping force.

How to avoid Aluminum deformation?

Technological Measures for Reducing Aluminum Deformation .

1.Reducing the Internal Stress of aluminum rough part

The internal stress of rought part can be partly eliminated by natural or artificial aging and vibration treatment. Pre-processing is also an effective process. For big rough aluminum part, the deformation after machining is also large. If cut the extra aluminum material from rought part, get precise tolerance the deformation can be improved. Also a part of internal stress can be released after stay for a period of time.

2.Improving Cutting Ability of Cutting Tools

Material and geometric parameters of cutting tools have an important influence on cutting force and heat. Correct selection of cutting tools is very important to reduce machining deformation of parts.

1.Reasonable selection of tool geometry parameters.

Front angle: Under the condition of maintaining the edge strength, the front angle should be selected appropriately larger. On the one hand, it can grind a sharp edge, on the other hand, it can reduce cutting deformation, make chip removal smoothly, and then reduce cutting force and cutting temperature. Never use negative rake tool.

Back angle: The size of back angle has a direct impact on the wear of the flank and the quality of the machined surface. Cutting thickness is an important condition for choosing rear angle. In rough milling, because of the large feed, heavy cutting load and high heat output, the cutter is required to have good heat dissipation conditions, so the back angle should be selected smaller. In finishing milling, sharp edges are required to reduce friction between the flank and the machined surface and reduce elastic deformation. Therefore, a larger rear angle should be chosen.

Helix angle: In order to make milling smooth and reduce milling force, the helix angle should be selected as large as possible.

Principal deviation angle: Appropriate reduction of the main deviation angle can improve the heat dissipation conditions and reduce the average temperature of the processing area.

2. Improve cutting tool structure.

Reduce the number of milling cutter teeth and increase chip space. Because of the large plasticity of aluminium material and the large cutting deformation in processing, it needs a larger chip space, so the radius of the bottom of the chip groove should be larger and the number of milling cutter teeth should be less.

Fine grinding of cutter teeth. The roughness of the cutting edge is less than Ra=0.4um. Before using a new cutting tool, a few gentle rubbings should be made on the front and back of the cutter teeth with fine asphalt to eliminate the burrs and slight serrated marks remaining when grinding the tool teeth. In this way, not only cutting heat can be reduced, but also cutting deformation is relatively small.

Strict control of tool wear standards. After tool wear, the roughness of workpiece surface increases, cutting temperature increases, and workpiece deformation increases. Therefore, in addition to choosing tool materials with good wear resistance, the tool wear standard should not be greater than 0.2 mm, otherwise it is easy to produce chip tumors. When do cutting by CNC Milling or CNC Turning, the temperature of the machining workpiece should not exceed 100 ℃ in order to prevent deformation.

3.Improving the clamping method of workpiece

For Thin-walled Aluminium workpieces with poor rigidity, the following clamping methods can be used to reduce deformation:

aluminum machined part

For thin-wall CNC Machining bushing parts, if three-jaw self-centering chuck or spring chuck is used to clamp from the radial direction. Once it is loosened after machining, the workpiece will inevitably deform. At this time, the method of axial end face compression with better rigidity should be used. A threaded mandrel is made for positioning the inner hole of the part. It is inserted into the inner hole of the part. A cover plate is used to press the end face and a nut is used for back tightening. The clamping deformation can be avoided when the outer circle is machined, and the satisfactory machining accuracy can be obtained.

When machining thin-wall sheet workpiece, it is better to choose vacuum sucker to obtain uniform clamping force. And then to process with smaller cutting parameters, which can prevent machined workpiece deformation.

In addition, the filling method can also be used. In order to increase the technological rigidity of thin-walled workpiece, medium can be filled in the workpiece to reduce the deformation of workpiece during clamping and cutting. For example, urea melt containing 3% to 6% potassium nitrate is poured into the workpiece. After processing, the workpiece is immersed in water or alcohol, and the filler can be dissolved and poured out.

4.Reasonable Arrangement of Processes

In high-speed cutting, because of large machining allowance and intermittent cutting, milling process often produces vibration, which affects the processing accuracy and surface roughness. Therefore, the NC high-speed cutting process can be generally divided into roughing, semi-finishing, angle clearing and finishing processes. For parts requiring high precision, it is sometimes necessary to finish them twice and half, and then finish them. After rough machining, the parts can be cooled naturally to eliminate the internal stress and reduce the deformation. The allowance left after roughing should be greater than the deformation, generally 1-2 mm. When finishing, the surface of parts should be kept uniform. Generally, 0.2-0.5mm is the best way to keep the tool in a stable state during the process of finishing, which can greatly reduce the cutting deformation, obtain good surface processing quality and ensure the accuracy of the product.

Operational Skills for Reducing Aluminum Machining Deformation

Except the above reasons, the operation method is also very important in the actual operation.

For parts with large machining allowance

In order to make them have better heat dissipation conditions and avoid heat concentration in machining, symmetrical processing should be adopted. If a 90 mm thick sheet needs to be processed to 60 mm, if the other side is milling immediately after milling one side, and the flatness reaches 5 mm once to the final dimension. If the repeated feed symmetrical processing is used, each side is processed to the final dimension twice, the flatness can be guaranteed to reach 0.3 mm.

If there are more than one cavity in the sheet metal parts

The sequential processing method of one cavity and one cavity should not be adopted in the processing, which is easy to cause uneven force and deformation of the parts. Layered multi-processing is adopted, each layer is machined to all the cavity at the same time, and then the next layer is machined, so that the parts are uniformly stressed and the deformation is reduced.

Reduce cutting force and heat by changing cutting parameters.

Among the three factors of cutting parameters, back feed has a great influence on cutting force. If the machining allowance is too large and the cutting force of the tool is too large. Not only will the parts be deformed, but also will affect the rigidity of the machine tool spindle and reduce the tool durability. If we reduce the amount of knives eaten by the back, the production efficiency will be greatly reduced. However, high-speed milling can overcome this problem in NC machining. At the same time, the cutting force can be reduced and the processing efficiency can be guaranteed as long as the feed is increased correspondingly and the speed of the machine tool is increased.

We should also pay attention to the sequence of cutting tool walking way.

Rough milling emphasizes the improvement of processing efficiency and the pursuit of cutting rate per unit time. Reverse milling can be generally used. That is to say, the superfluous material on the surface of the blank is removed at the fastest speed and in the shortest time, and the geometric contour required for finishing is basically formed. Precision machining emphasizes high precision and high quality, and it is advisable to use forward milling. Because the cutting thickness of the cutter teeth decreases gradually from the maximum to zero, the degree of work hardening is greatly reduced, and the degree of deformation of the parts is also reduced.

The deformation of thin-walled workpiece is inevitable even in finishing because of clamping.

In order to minimize the deformation of the workpiece, it is possible to loosen the pressing part before finishing is about to reach the final dimension, so that the workpiece can be freely restored to its original state, and then slightly compressed, whichever is rigid enough to hold the workpiece (completely by hand), so as to achieve the desired processing effect. In a word, the point of action of clamping force is best on the supporting surface. The clamping force should be applied in the direction of good rigidity of the workpiece. The smaller the clamping force, the better, on the premise of ensuring that the workpiece is not loose.

Don’t use milling cutter like drill

When machining the parts with cavity, try not to let the milling cutter penetrate directly into the parts like a drill bit, resulting in inadequate chip space and unsmooth chip removal of the milling cutter, resulting in overheating, expansion of the parts, tool breaking and other adverse phenomena. First drill the hole with a bit of the same size or size as the milling cutter, and then milling with the milling cutter. Alternatively, the spiral downcutter program can be produced with CAM software.

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