CN217393787U

CN217393787U - Chamfering machining tool

Info

Publication number: CN217393787U
Application number: CN202221312031.7U
Authority: CN
Inventors: 李福彬; 朱义; 陈贤超
Original assignee: ZUNYI JINGXING AEROSPACE ELECTRICAL APPLIANCE CO Ltd
Current assignee: ZUNYI JINGXING AEROSPACE ELECTRICAL APPLIANCE CO Ltd
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2022-09-09
Anticipated expiration: 2032-05-30

Abstract

A chamfering tool comprises a chamfering blade, an end face blade and a tool handle; the chamfering blade is provided with a blade tip, the arc of the blade tip is R0.25max, and the included angle of the chamfering blade is 120 degrees; a rake angle gamma of the chamfered edge ₀ Is 0 to 2 DEG, and has a clearance angle a ₀ 6 to 10 degrees; a rake angle gamma of the end face edge ₀ Is 0 to 2 DEG and a back angle a ₀ 6 to 10 degrees; the diameter phi D of the knife handle is consistent with the specification of the spring chuck and is phi 3mm or phi 4 mm. The length L of the cutter is 38-50 mm. Compared with the prior art, the utility model, optimize original chamfer technology, the feed position when adding man-hour sets up to the position of guaranteeing that terminal surface chamfer sword realizes the plain end face, has eliminated traditional chamfer sword chamfer because of the position of guaranteeing that the terminal surface chamfer sword is flatThe size of the chamfer machined at each time is kept consistent due to the influence caused by the axial tolerance of the machined workpiece, the consistency of the size of the chamfer is improved, and the machining quality of parts is improved. By adopting the invention, the revolving body workpiece with 120-degree chamfer can be processed by selecting phi D multiplied by D multiplied by 120 degrees with different specifications.

Description

Chamfering machining tool

Technical Field

The utility model relates to a chamfer processing cutter especially is applicable to the part of the automatic lathe processing 120 chamfer structures of nonstandard, belongs to connector parts machining technical field.

Background

In the field of machining, when a 120-degree chamfer revolved body workpiece is machined, a traditional chamfer cutter is usually adopted for machining. The traditional chamfering tool is formed by sharpening a straight-handle hard alloy round bar, and the chamfering part is provided with an included angle with the specific chamfering degree. When a workpiece is machined, the size of the chamfer is controlled by axial feeding, so the precision of the size of the chamfer is directly influenced by the axial tolerance of the workpiece. In the field of electronic components, the axial tolerance of parts is generally 0.1mm, while for a chamfer of 120 degrees, the axial feed is 0.01mm, the chamfer size is increased by 0.04mm, and the chamfer tolerance corresponding to the tolerance of 0.1mm is 0.4mm, which far exceeds the tolerance requirement of the electronic components. Therefore, when the traditional chamfering tool is used for processing a workpiece with a 120-degree chamfer, the chamfering precision is poor, and the chamfer size is inconsistent.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the poor technical problem of traditional chamfer sword chamfer precision will be solved.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a chamfering tool comprises a chamfering edge, an end face edge and a tool handle; the chamfering blade is provided with a blade tip, the arc of the blade tip is R0.25max, and the included angle of the chamfering blade is 120 degrees; a rake angle gamma of the end face edge ₀ Is 0-2 DEG, back angle a ₀ 6 to 10 degrees; the diameter phi D of the knife handle is consistent with the specification of the spring chuck and is phi 3mm or phi 4 mm.

The length L of the cutter is 38-50 mm.

A rake angle gamma of the chamfered edge ₀ Is 0 to 2 DEG, and has a clearance angle a ₀ Is 6 to 10 degrees.

The beneficial effect of adopting above-mentioned technical scheme is:

compared with the prior art, the utility model, optimize original chamfer technology, the feed position that adds man-hour sets up to the position of guaranteeing terminal surface chamfer sword realization flush end face, has eliminated traditional chamfer sword chamfer because of the influence that the work piece axial tolerance of processing brought, makes the chamfer size of processing at every turn keep unanimous, has improved the uniformity of chamfer size, has promoted the processingquality of part. By adopting the invention, the revolving body workpiece with 120-degree chamfer can be processed by selecting phi D multiplied by D multiplied by 120 degrees with different specifications.

Drawings

Fig. 1 is the structure schematic diagram of the chamfer processing cutter of the utility model.

FIG. 2 is an enlarged view of a portion of the tool of FIG. 1.

Fig. 3 is a schematic view of the end face edge of fig. 1.

Fig. 4 is a schematic view of the chamfer machining tool of the present invention.

In the figure: 1-chamfer edge, 1.1-tool nose, 1.2-included angle, 2-end surface edge and 2.1-front angle gamma ₀ 2.2-relief angle alpha ₀ 3-tool handle, 4-workpiece, phi D-tool handle diameter, D-maximum width of chamfer edge and L-tool length.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings:

structural design: the end face chamfering tool is composed of a chamfering edge, an end face edge and a tool handle, wherein the chamfering edge is used for chamfering, the end face edge is used for flattening an end face, and the tool handle is used for clamping. The junction of chamfer sword and both ends face sword is fillet transitional coupling, the chip removal during the chamfer of being convenient for, and the handle of a knife is the cutter arbor, and the design principle is for being greater than the external diameter of processing work piece, is equivalent to a shaping sword.

Sharpening parameters: front angle gamma ₀ The main function of the structure is to make the cutting edge sharp, the larger the front angle is, the sharper the cutting edge is, but the worse the rigidity is, the chamfering edge and the end face edge in the structure are essentially milling cutters, the cutting impact is large, the rigidity of the cutter is ensured, the front angle is not too large, and the gamma is ₀ Taking the angle of 0-2 degrees; relief angle alpha ₀ Clearance angle alpha of milling cutter ₀ The feed amount is mainly selected according to the feed amount, the smaller the feed amount is, the larger the clearance angle is, the structure is used for chamfering, the feed amount is small, and therefore the clearance angle alpha ₀ Taking the angle to be 6-10 degrees; the included angle psi is the included angle between the chamfer cutting edges in the structure and is taken according to the chamfer degree of the workpiece,psi is taken at 120 °; the maximum outer diameter d of the chamfering edge is similar to that of a forming cutter, and the maximum outer diameter d of the chamfering edge is the diameter of the workpiece chamfer.

A chamfering tool comprises a chamfering edge 1, an end face edge 2 and a tool handle 3; the chamfer angle blade 1 is provided with a blade tip 1.1, the arc of the blade tip 1.1 is R0.25max, and the included angle 1.2 of the chamfer angle blade 1 is 120 degrees; a rake angle gamma of the chamfered edge 1 ₀ Is 0 to 2 DEG, and has a clearance angle a ₀ 6 to 10 degrees; rake angle gamma of said end face edge 2 ₀ 2.1 is 0-2 DEG and a back angle a ₀ 2.2 is 6-10 degrees; the diameter phi D of the tool shank 3 is larger than the diameter phi D1 of the workpiece 4, and the tool shank is the same as a common chuck in specification and is divided into two types: a. d =3 mm; b. d =4 mm;

the length L of the cutter is 38-50 mm.

In order to ensure the coaxiality of the chamfer and the excircle of the machined workpiece 4, the center of a tool nose 1.1 on the chamfer edge 1 and the center of the circle of the machined workpiece 4 needs to be calibrated and aligned;

in order to ensure the size and consistency of chamfers of the workpiece 4, the axial feed amount of the cutter needs to ensure that the end face blade 2 participates in the work to flatten the end face, and meanwhile, the feed amount needs to ensure the allowable length of the workpiece;

in order to ensure the sharpness and the durability of the main cutting edge chamfer angle edge 1 and the end face edge 2, the processing parameters are 6000-8000 r/min of main shaft rotation speed and 1.5-2 mm/s of feeding speed in the processing process.

When a chamfer is required to be machined on the workpiece 4 as shown in FIG. 2:

the first embodiment is as follows:

when a workpiece made of a copper alloy material with phi D1= phi 2.5mm and phi D1= phi 1.2 mm is machined, selecting an end face chamfer cutter made of hard alloy, wherein the length L =38mm and the mark phi 4 multiplied by 1.2 multiplied by 120 degrees; firstly, clamping a tool shank 3 in a machine tool collet and locking; the center of a circle of the tool nose 1.1 and the chamfer end of the workpiece 4 is calibrated and aligned to ensure the coaxiality of the chamfer of the machined workpiece; starting a machine tool main shaft to rotate, manually feeding the end face chamfer cutter, setting the parameters of the end face blade 2 contacting the workpiece 4 to zero, and then setting the feeding amount of 0.1-0.2 mm, the main shaft rotating speed of 7000r/min and the feeding speed of 2 mm/s; and starting a program, stopping feeding after the cutting is carried out to the required position, finishing the tool withdrawal and finishing the chamfering of the part.

The second embodiment:

when a workpiece made of a copper alloy material with phi D1= phi 3mm and phi D1= phi 1.05 mm is machined, selecting an end face chamfer cutter made of hard alloy, wherein the length L =38mm, and the mark phi 4 multiplied by 1.05 multiplied by 120 degrees; firstly, clamping a tool shank 3 in a machine tool collet and locking; the center of a circle of the tool nose 1.1 and the chamfer end of the workpiece 4 is calibrated and aligned to ensure the coaxiality of the chamfer of the machined workpiece; starting a machine tool spindle to rotate, manually feeding the end face chamfer cutter, setting the parameters of the end face blade 2 contacting the workpiece 4 to zero, and then setting the feeding amount of 0.1-0.2 mm, the rotating speed of the spindle of 7500r/min and the feeding speed of 1.5 mm/s; and starting a program, stopping feeding after the cutting is carried out to the required position, finishing the tool withdrawal and finishing the chamfering of the part.

The use method of the end face chamfer cutter comprises the following steps:

the method comprises the following steps: selecting a corresponding end face chamfer cutter with the specifications of phi D multiplied by D multiplied by 120 degrees according to the size of the outer diameter of the workpiece to be machined and the size of the chamfer, wherein the phi D is larger than the outer diameter of the workpiece and is the same as the specification of the spring chuck, and the phi 3mm or the phi 4mm is selected, and the D is the same as the diameter of the chamfer of the workpiece to be machined;

step two: the tool shank 3 is clamped in a spring chuck of the machine tool, the size and the specification of the chuck are the same as those of the tool shank, and the tool is convenient to lock;

step three: the center of a tool nose 1.1 on the chamfering edge 1 and the center of a circle of a processed workpiece needs to be calibrated and aligned;

step four: and starting the machine tool, making a rotary feeding motion of the end face chamfering tool to the axial direction of the processed workpiece, enabling the chamfering blade 1 to realize chamfering cutting work, enabling the end face blade 2 to realize end face flattening work, ensuring that the end face blade 2 realizes end face flattening work by feeding every time, enabling the depth of the end face to be 0.1-0.2 mm, and retreating the tool after feeding to a required position.

Claims

1. A chamfer processing cutter which is characterized in that: the cutter comprises a chamfer edge (1), an end face edge (2) and a cutter handle (3); a tool nose (1.1) is arranged on the chamfering blade (1), the arc of the tool nose (1.1) is R0.25max, and the included angle (1.2) of the chamfering blade (1) is 120 degrees; of said end face edge (2)Front angle gamma ₀ (2.1) 0 to 2 DEG, and a rear angle a ₀ (2.2) the angle is 6-10 degrees; the diameter phi D of the knife handle (3) is consistent with the specification of the spring chuck and is phi 3mm or phi 4 mm.

2. The chamfer machining tool according to claim 1, wherein: the length L of the cutter is 38-50 mm.

3. The chamfer machining tool according to claim 1, wherein: a rake angle gamma of the chamfered edge (1) ₀ Is 0 to 2 DEG, and has a clearance angle a ₀ Is 6 to 10 degrees.