CN209935880U

CN209935880U - Forming cutter for turning retainer

Info

Publication number: CN209935880U
Application number: CN201921650719.4U
Authority: CN
Inventors: 吴亚新; 吴强; 曹凯
Original assignee: CHANGZHOU SUTE BEARING MANUFACTURE Co Ltd
Current assignee: CHANGZHOU SUTE BEARING MANUFACTURE Co Ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-01-14
Anticipated expiration: 2029-09-30

Abstract

The utility model belongs to the technical field of the bearing processing technique and specifically relates to a fashioned shaping cutter of car system holder. A molding cutter for molding a lathed retainer comprises a cutter handle, wherein the cutter handle is cylindrical, the end part of the cutter handle is a cutter head, the lower half part of the cutter head is semi-cylindrical, the top end of the cutter head is provided with a step surface, one side of the step surface is a cutting surface bent downwards, and the outer side of the cutter head is provided with two convex cutting heads. The forming cutter for forming the lathed retainer has the main advantages that the forming cutter can rotate by one angle and can be used for grinding for dozens of times in the using process, only the grinding cutting edge is not ground, so that the same cutter can be repeatedly ground for use, the shapes of processed products are not changed, the cost is low, the consistency among each batch of processed products is good, and one round forming cutter is equivalent to dozens of square forming cutters.

Description

Forming cutter for turning retainer

Technical Field

The utility model belongs to the technical field of the bearing processing technique and specifically relates to a fashioned shaping cutter of car system holder.

Background

At present, the following defects exist when the turning M-shaped retainer is processed:

firstly, the machining of turning the M-shaped retainer blank (figure 7) includes turning the shape and then turning the inner groove (figure 8). Generally, the inner groove is formed by one-time feeding machining or step-by-step machining (two ends of the inner groove are separately machined) by a numerical control lathe, and the inner groove is formed by one-time drawing out of a forming cutter of a hydraulic lathe. The feed processing and forming of the numerical control lathe are high in cost and low in efficiency, but the precision can meet the requirement, and the front and back consistency of mass production is good. The forming cutter of the liquid lathe is used for pulling out the inner groove at one time, the cost is low, the efficiency is high, the precision is low, and the consistency before and after mass production (errors exist in the shape of the cutter changed midway) cannot be met.

Secondly, the forming cutter of the original common lathed M-shaped retainer blank inner groove is square and is used for one-time processing (figure 9), certain errors exist between every two cutters, if the processing errors of the cutters are reduced to ensure consistency, a high-precision numerical control tool grinding machine or an optical curve grinding machine is used for processing, and the problems of high cost, high required processing technology level, high investment and the like are solved. There will be some error between each of the forming knives. The error between the shapes of the blanks processed by each forming cutter can influence the matching of the window hole punching die and the blanks in the next procedure, and the poor matching can influence the quality of the window hole punching (figure 9), so the requirement on the consistency of the blanks is higher.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of existence in the current car system M type holder blank course of working, the utility model provides a fashioned shaping cutter of car system holder.

The utility model provides a technical scheme that its technical problem adopted is: a molding cutter for molding a lathed retainer comprises a cutter handle, wherein the cutter handle is cylindrical, the end part of the cutter handle is a cutter head, the lower half part of the cutter head is semi-cylindrical, the top end of the cutter head is provided with a step surface, one side of the step surface is a cutting surface bent downwards, and the outer side of the cutter head is provided with two convex cutting heads.

According to another embodiment of the present invention, further comprising the cutting head having an outer side perpendicular to the cutting head and an inner side inclined.

According to another embodiment of the present invention, further comprising that the arc of the lower side of the cutting head is 200 and 240 °.

The beneficial effects of the utility model are that, this kind of fashioned shaping cutter of car system holder, at the in-process that uses, main advantage is can rotate an angle, and the coping of tens of times is used, owing to only the coping blade is the coping shape not, so the coping can be repeated to the same sword and is used, and the shape of processing product is unchangeable, and is with low costs, the uniformity between every batch of processing product is good, a circular shaping sword, in other words tens of square shaping sword.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a front view of the present invention;

fig. 3 is a top view of the present invention;

fig. 4 is a perspective view of the utility model after grinding;

fig. 5 is a front view of the invention after grinding;

fig. 6 is a top view of the invention after grinding;

FIG. 7 is a perspective view of a lathed M-shaped cage blank;

FIG. 8 is a perspective view of the M-shaped holder blank after turning the inner groove;

FIG. 9 is a perspective view of the M-shaped retainer after being turned into a window;

FIG. 10 is a square forming knife turning the inner groove of the M-shaped cage blank;

fig. 11 is a front view of fig. 7 of the present invention;

fig. 12 is a cross-sectional view of fig. 11 of the present invention;

in the figure, 1, a tool shank, 2, a tool bit, 3, a step surface, 4, a cutting surface, 5 and a cutting head.

Detailed Description

Fig. 1-6 show the structural schematic diagram of the present invention, a forming cutter for lathing a retainer, which comprises a handle 1, wherein the handle 1 is cylindrical, the end of the handle 1 is a cutter head 2, the lower half part of the cutter head 2 is semi-cylindrical, the top end of the cutter head 2 has a step surface 3, one side of the step surface 3 is a cutting surface 4 bent downwards, and the outer side of the cutter head 2 has two convex cutting heads 5.

When the forming tool for lathing the retainer is used, a tool shank 1 of the tool is clamped on a numerical control machine tool, when an M-shaped retainer blank is cut, when the inner end of the M-shaped retainer blank is cut, the tool is driven to move by the numerical control machine tool, a cutting head 5 on a tool bit 2 on the inner side of the tool cuts the inner end of the M-shaped retainer blank, when the outer side of the M-shaped retainer blank needs to be cut, the tool is driven to move by the numerical control machine tool, the cutting head 5 on the tool bit 2 on the outer side of the tool cuts the outer end of the M-shaped retainer blank, when the cutting head 5 on the tool bit 2 of the tool is worn after being machined for a period of time, the tool is taken down to grind a cutting surface 4, the shape of the cutting surface tends to be figure 4, and the tool bit 2 is only used for grinding a cutting edge, the shape is not ground, so that a cutter can be repeatedly ground for use, and the step surface 3 plays a role in marking to distinguish the cutting surface 4.

According to another embodiment of the present invention, it further comprises that the cutting head 5 is perpendicular to the cutting head 2 on the outside and is inclined on the inside.

The shape of the cutting head 5 is consistent with the shape of the inner groove of the lathed M-shaped retainer blank, so that the machining is convenient.

According to another embodiment of the present invention, it further comprises that the radian of the underside of the cutting head 2 is 200 ° and 240 °.

The tool bit 2 has a large arc-shaped structure, so that the tool bit can be ground for multiple times, and further, the purpose that one tool can be repeatedly used for multiple times is achieved.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The forming cutter for turning the retainer comprises a cutter handle (1) and is characterized in that the cutter handle (1) is cylindrical, a cutter head (2) is arranged at the end part of the cutter handle (1), the lower half part of the cutter head (2) is semi-cylindrical, a step surface (3) is arranged at the top end of the cutter head (2), a cutting surface (4) which is bent downwards is arranged on one side of the step surface (3), and two convex cutting heads (5) are arranged on the outer side of the cutter head (2).

2. The tool for forming the retainer by turning as claimed in claim 1, wherein the cutting head (5) has an outer side perpendicular to the cutting head (2) and an inner side inclined.

3. The molding tool for molding retainer by lathing as claimed in claim 1, wherein the curvature of the underside of the cutting head (2) is 200 ° and 240 °.