CN215845940U

CN215845940U - End milling cutter with chamfering function

Info

Publication number: CN215845940U
Application number: CN202122189163.7U
Authority: CN
Inventors: 桑原康宏
Original assignee: Changshu Synergy Automobile Parts Co ltd
Current assignee: Changshu Synergy Automobile Parts Co ltd
Priority date: 2021-09-10
Filing date: 2021-09-10
Publication date: 2022-02-18
Anticipated expiration: 2031-09-10

Abstract

The utility model discloses an end mill with a chamfering function, which comprises: a cutter body and a cutter handle; the cutter body consists of a finish milling section, a chamfer section, a chip removal section and a clearance section from the top end in sequence; the fine milling section, the chamfering section and the chip removal section are provided with chip removal grooves which are spirally communicated from the foremost end, the chip removal grooves are intersected with the cutter body to form fine milling blades, and the chamfering blades are formed on the chamfering section and the chip removal section; the width of the finish milling section is equal to the width of a workpiece groove to be processed, and the length of the finish milling section is the depth of the workpiece groove; the chamfer section is in a round table shape; the front section of the void avoiding section is as wide as the chip removal section, the rear section of the void avoiding section is in a circular truncated cone shape and is connected with the knife handle, and the lower bottom surface of the void avoiding section is as wide as the knife handle. The groove is machined by the end milling cutter only by adopting a two-cutter method for 2 strokes, the machining speed is higher, and the cutter does not need to be replaced.

Description

End milling cutter with chamfering function

Technical Field

The utility model belongs to the technical field of nonstandard cutters, and particularly relates to an end milling cutter with a chamfering function.

Background

A milling cutter is a rotating tool with one or more cutter teeth for milling. When in work, each cutter tooth cuts off the allowance of the workpiece in sequence and intermittently. The milling cutter is mainly used for processing planes, steps, grooves, formed surfaces, cut-off workpieces and the like on a milling machine.

The end milling cutter is used for processing grooves, step surfaces and the like, and cutter teeth are arranged on the circumference and the end surface and cannot be fed along the axial direction during working. Axial feed is possible when the end mill has end teeth passing through the center.

The existing vertical milling head is adopted to mill a groove with the width of 8.15mm on the outer surface of a motor shaft at present, and a three-cutter method is generally adopted: firstly, roughly milling a cutter with the diameter of 7.8 to form a groove with the width of 7.8; secondly, the phi 6.0 milling cutter walks a circle (one round) along the edge of the groove to widen the groove to be 8.15 +/-0.015 wide; and thirdly, the phi 6.030-degree chamfering tool completes chamfering processing by going around the edge of the groove for one circle (one round).

The existing vertical milling head has the following defects: the groove machining process is multiple, and the machining time is long: roughly milling one to remove, finely milling one to remove one time and chamfering one to remove one time, and totaling 5 strokes; machining the grooves requires tool change or equipment change.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an end mill with a chamfering function aiming at the defects of the prior art.

In order to achieve the purpose, the utility model adopts the following technical scheme: an end mill with chamfering function, comprising: a cutter body and a cutter handle; the cutter body consists of a finish milling section, a chamfer section, a chip removal section and a clearance section from the top end in sequence; the fine milling section, the chamfering section and the chip removal section are provided with chip removal grooves which are spirally communicated from the foremost end, the chip removal grooves are intersected with the cutter body to form fine milling blades, and the chamfering blades are formed on the chamfering section and the chip removal section; the width of the finish milling section is equal to the width of a workpiece groove to be processed, and the length of the finish milling section is the depth of the workpiece groove; the chamfer section is in a round table shape; the front section of the void avoiding section is as wide as the chip removal section, the rear section of the void avoiding section is in a circular truncated cone shape and is connected with the knife handle, and the lower bottom surface of the void avoiding section is as wide as the knife handle.

Further, the number of the chip grooves is four.

Furthermore, the included angle between the bevel edge of the chamfering section and the axial direction of the cutter body is the chamfering angle of the workpiece, and the length of the bevel edge is the width of the top surface, the inclination of the bevel edge and the width of the bottom surface.

The groove is machined by the end milling cutter only by adopting a two-cutter method for 2 strokes, the machining speed is higher, and the cutter does not need to be replaced.

Drawings

Fig. 1 is a schematic structural view of an end mill with a chamfering function according to an embodiment.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are merely exemplary of portions of this application and not all exemplary embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "comprises" and "comprising," and any variations thereof, in the description and claims of this application and the above-described drawings, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The end mill with chamfering function shown in fig. 1 includes: cutter body and handle of a knife 1.

The cutter body comprises finish milling section 2, chamfer section 3, chip removal section 4 and clearance section 5 from the top in proper order. The fine milling section, the chamfering section and the chip removal section are provided with chip removal grooves 6 which are spirally communicated from the foremost end, the chip removal grooves and the cutter body are intersected to form, the fine milling section forms a fine milling blade, and the chamfering section and the chip removal section form a chamfering blade. The number of the chip grooves is four, and the chip grooves divide the finish milling blade and the chamfering blade into four cutter teeth.

The width of the finish milling section is equal to the width of a workpiece groove to be processed, and the length is the depth of the workpiece groove.

The chamfer section is round table shape, the included angle between the chamfer edge of the chamfer section and the axial direction of the cutter body is the chamfer angle of the workpiece, and the length of the chamfer edge is the top surface width multiplied by the chamfer edge inclination multiplied by the bottom surface width.

The front section of the void avoiding section is as wide as the chip removal section, the rear section is in a shape of a circular truncated cone and is connected with the knife handle, and the lower bottom surface is as wide as the knife handle. The void-avoiding section needs to be avoided for the workpiece groove to approach the protrusion (e.g., flange). The total length of the cutter body is slightly greater than the length obtained by subtracting the top of a protrusion (namely the groove edge-protrusion) from the bottom of a groove of a machined workpiece, the width of the truncated cone-shaped top surface is equal to the width of the cutter handle-retraction amount, and the retraction amount is slightly greater than the minimum distance of the groove edge-protrusion.

The width of the knife handle is determined by the knife seat.

The groove is machined by the end milling cutter by adopting a two-cutter method:

(1) roughly milling a cutter with the diameter of 8.0 to form a groove with the width of 8.0;

(2) and (5) finely milling a new cutter to widen the groove to be 8.15 +/-0.015 wide and finishing chamfering.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a take end mill of chamfer function which characterized in that includes: a cutter body and a cutter handle; the cutter body consists of a finish milling section, a chamfer section, a chip removal section and a clearance section from the top end in sequence; the fine milling section, the chamfering section and the chip removal section are provided with chip removal grooves which are spirally communicated from the foremost end, the chip removal grooves are intersected with the cutter body to form fine milling blades, and the chamfering blades are formed on the chamfering section and the chip removal section; the width of the finish milling section is equal to the width of a workpiece groove to be processed, and the length of the finish milling section is the depth of the workpiece groove; the chamfer section is in a round table shape; the front section of the void avoiding section is as wide as the chip removal section, the rear section of the void avoiding section is in a circular truncated cone shape and is connected with the knife handle, and the lower bottom surface of the void avoiding section is as wide as the knife handle.

2. The end mill with chamfering function according to claim 1, wherein: the number of the chip grooves is four.

3. The end mill with chamfering function according to claim 1, wherein: the included angle between the bevel edge of the chamfering section and the axial direction of the cutter body is the chamfering angle of the workpiece, and the length of the bevel edge is the width of the top surface, the inclination of the bevel edge and the width of the bottom surface.