CN215999776U

CN215999776U - Tool for cylindrical grinding

Info

Publication number: CN215999776U
Application number: CN202121786935.9U
Authority: CN
Inventors: 黄静; 王军; 高建
Original assignee: ZIGONG CEMENTED CARBIDE CORP Ltd
Current assignee: Chengdu Great Wall Cutting Tools Co ltd; ZIGONG CEMENTED CARBIDE CORP Ltd
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2022-03-11
Anticipated expiration: 2031-08-02

Abstract

The utility model relates to the technical field of clamp tools, in particular to a tool for grinding an outer circle, which comprises a clamp body, a positioning disc and an expansion sleeve, wherein the positioning disc and the expansion sleeve are sleeved at one end of the clamp body, one end, far away from the expansion sleeve, of the positioning disc is fixedly connected with the clamp body, a gap is formed between the inner wall of the positioning disc and the outer wall of the clamp body, one end of the expansion sleeve is positioned in the gap, a boss is convexly arranged on the outer wall of the other end of the expansion sleeve, and the boss is abutted against the inner wall of a product to fix the product. In the utility model, the boss is convexly arranged on the outer wall of the expansion sleeve, when the expansion sleeve is arranged in the shaft hole of a shaft sleeve type product, the boss is abutted against the inner wall of the shaft sleeve, the contact area is small, the influence of the inner hole form and position error on the excircle grinding machining precision of the shaft sleeve is further reduced, and the excircle grinding machining precision can be improved.

Description

Tool for cylindrical grinding

Technical Field

The utility model relates to the technical field of clamp tools, in particular to a tool for cylindrical grinding.

Background

When the excircle of the shaft sleeve product is ground, a tool clamp is needed to fix the product. The traditional rough grinding outer circle procedure is processed on an outer circle grinding machine, a dead mandrel or two top mandrels are adopted for clamping, the loading and unloading of products need to be manually operated, and automatic clamping cannot be realized; and before excircle abrasive machining, the hole of product is blank state, when fixed the product through the tight cover that expands, the outer wall of the tight cover that expands and the hole laminating of product, nevertheless because the hole is the blank form, has certain form and position error, and then influences the form and position error of product excircle.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a tool for cylindrical grinding, which is provided with a positioning disc and an expansion sleeve, wherein a boss is convexly arranged on the outer wall of the expansion sleeve, the boss is abutted against the inner wall of a product, the contact area is small, the influence of the form and position error of an inner hole on the cylindrical grinding precision of a shaft sleeve is further reduced, and the cylindrical grinding precision can be improved.

The utility model is realized by the following technical scheme:

the utility model provides a frock is used in cylindrical grinding, includes the anchor clamps body to and the cover is located the positioning disk of anchor clamps body one end with expand tight cover, the positioning disk is kept away from expand tight cover one end with anchor clamps body fixed connection, just the inner wall of positioning disk with the clearance has between the outer wall of anchor clamps body, expand tight cover one end and be located in the clearance, the protruding boss that is equipped with of outer wall of the tight cover other end that expands, the boss is with the inner wall butt of product, in order to fix the product.

In the utility model, the boss is convexly arranged on the outer wall of the expansion sleeve, when the expansion sleeve is arranged in the shaft hole of a shaft sleeve type product, the boss is abutted against the inner wall of the shaft sleeve, the contact area is small, the influence of the inner hole form and position error on the excircle grinding machining precision of the shaft sleeve is further reduced, and the excircle grinding machining precision can be improved.

Furthermore, the boss is annular, and the boss is arranged along the circumferential direction of the expansion sleeve.

Furthermore, the bosses are distributed at intervals along the axial direction of the expansion sleeve.

Furthermore, the bosses are blocky and are arranged on the same circumference of the expansion sleeve, and the bosses are arranged at intervals.

Further, along the axial of the tight cover that expands, the boss is a plurality of, and is a plurality of the boss interval sets up.

Furthermore, the shape of the cross section of the boss along the axial direction of the expansion sleeve is trapezoidal, semicircular, square, rectangular or other polygons.

Furthermore, the fixture comprises a pull rod, wherein the fixture body is provided with a through hole, the through hole is coaxial with the expansion sleeve, one end of the pull rod is positioned in the through hole, and the other end of the pull rod is connected with one end, far away from the positioning disc, of the expansion sleeve.

Furthermore, the clamp body is close to the taper of the outer wall of one end of the expansion sleeve, and the taper is the same as that of the inner wall of the expansion sleeve.

The utility model has at least the following advantages and beneficial effects:

according to the utility model, the convex block is convexly arranged on the outer wall of the expansion sleeve and is abutted against the inner wall of the shaft sleeve product so as to fix the product in the shaft sleeve on the clamp body, and the contact area of the inner wall of the shaft sleeve product of the expansion sleeve is reduced by arranging the convex block, so that the influence of the inner wall form and position error on the outer circle form and position error in the grinding process of the outer circle of the shaft sleeve product can be reduced, and the processing precision of the outer circle of the shaft sleeve product is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic front view of an expansion sleeve of a tool for cylindrical grinding according to the present invention;

FIG. 2 is a schematic cross-sectional view taken along the line A-A in FIG. 1;

FIG. 3 is a schematic front view of a cylindrical grinding tool provided in the present invention;

FIG. 4 is an enlarged view of portion B of FIG. 1;

icon: 1-clamp body, 2-positioning disc, 3-expansion sleeve, 31-boss, 4-pull rod and 5-product.

Detailed Description

Example (b): as shown in figures 1-4

The embodiment provides a tool for cylindrical grinding, which comprises a clamp body 1, wherein one end of the clamp body 1 is conical, the taper of the clamp body is the same as that of the inner wall of an expansion sleeve 3, a through hole is formed in the end of the clamp body 1, and the through hole is coaxial with the expansion sleeve 3; the end sleeve of the clamp body 1 is provided with a positioning disc 2 and an expansion sleeve 3, as shown in the attached drawing, one end of the expansion sleeve 3, far away from the positioning disc 2, is fixedly connected with the clamp body 1 through a bolt, a gap is formed between the inner wall of the positioning disc 2 and the outer wall of the clamp body 1, one end of the expansion sleeve 3 is located in the gap, a boss 31 is convexly arranged on the outer wall of the other end of the expansion sleeve 3, and the boss 31 is abutted against the inner wall of the product 5 to fix the product 5.

Still include pull rod 4, the one end of pull rod 4 is run through the through-hole, the other end of pull rod 4 with tight cover 3 of expanding is kept away from the one end of positioning disk 2 is connected.

When using the frock of this embodiment, pass the tight cover 3 that expands with pull rod 4, one end (the right-hand member shown in the figure) is fixed with the tight cover 3 that expands, and the through-hole of anchor clamps body is passed to the other end (the left end shown in the figure), is connected with the cylinder on the lathe, and the excircle of manipulator centre gripping product 5 is with 5 suits of product on the outer wall of the tight cover 3 that expands, and the terminal surface and the 2 terminal surfaces of positioning disk of product 5 are pasted flatly. Subsequently, under the action of the cylinder, the pull rod 4 is pulled to move leftwards (in the direction of the drawing), so that the expansion sleeve 3 moves leftwards, the outer diameter of the expansion sleeve 3 gradually increases through the taper fit between the inner cone of the expansion sleeve 3 and the outer cone of the clamp body 1 until the inner hole of the product 5 is fully contacted with the outer diameter boss 31 of the expansion sleeve 3, and the product 5 is tensioned and fixed on the clamp body 1.

In the present invention, the boss 31 is annular, and the boss 31 is disposed along the circumferential direction of the expansion sleeve 3. The number of bosses 31 is 1.

In other embodiments of the present invention, the number of the bosses 31 is 2, 3, 4, etc., and a plurality of the bosses 31 are spaced apart along the axial direction of the expansion sleeve 3.

In other embodiments of the present invention, the boss 31 is block-shaped, and a plurality of block-shaped bosses 31 are provided on the same circumference of the expansion sleeve 3, and the plurality of bosses 31 are provided at intervals. The bumps are independent blocks, and the contact area between the bumps and the inner hole of the product 5 is further reduced on the same circumference.

In another embodiment of the present invention, there may be a plurality of block-shaped bosses 31 along the axial direction of the expansion sleeve 3, and the plurality of bosses 31 are arranged at intervals. Namely, a plurality of block-shaped bosses 31 may be provided in both the longitudinal direction and the circumferential direction of the expansion sleeve 3.

In this embodiment, the cross section of the boss 31 along the axial direction of the expansion sleeve 3 is trapezoidal, and in other embodiments of the present invention, the cross section may also be semicircular, square, rectangular or other polygonal shapes.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. 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 frock is used in cylindrical grinding which characterized in that: including anchor clamps body (1) to and the cover is located positioning disk (2) of anchor clamps body (1) one end and the tight cover (3) that expands, positioning disk (2) are kept away from expand tight cover (3) one end with anchor clamps body (1) fixed connection, just have the clearance between the inner wall of positioning disk (2) and the outer wall of anchor clamps body (1), expand tight cover (3) one end and be located in the clearance, the outer wall protruding boss (31) that is equipped with of the tight cover (3) other end that expands, boss (31) and the inner wall butt of product (5) are with fixed product (5).

2. The cylindrical grinding tool according to claim 1, characterized in that: the boss (31) is annular, and the boss (31) is arranged along the circumferential direction of the expansion sleeve (3).

3. The cylindrical grinding tool according to claim 2, characterized in that: the bosses (31) are distributed along the axial direction of the expansion sleeve (3) at intervals.

4. The cylindrical grinding tool according to claim 1, characterized in that: the bosses (31) are blocky and are positioned on the same circumference of the expansion sleeve (3) and are provided with a plurality of bosses (31), and the bosses (31) on the same circumference of the expansion sleeve (3) are arranged at intervals.

5. The cylindrical grinding tool according to claim 4, characterized in that: follow the axial of tight cover (3) expands, boss (31) are a plurality of, follow the tight cover (3) axial of expanding is a plurality of boss (31) interval sets up.

6. The cylindrical grinding tool according to any one of claims 1 to 5, characterized in that: the shape of the cross section of the boss (31) along the axial direction of the expansion sleeve (3) is trapezoid, semicircular, square or rectangular.

7. The cylindrical grinding tool according to any one of claims 1 to 5, characterized in that: still include pull rod (4), anchor clamps body (1) has the through-hole, the through-hole with it is coaxial to expand tight cover (3), the one end of pull rod (4) is located in the through-hole, the other end of pull rod (4) with expand tight cover (3) and keep away from the one end of positioning disk (2) is connected.

8. The cylindrical grinding tool according to any one of claims 1 to 5, characterized in that: the clamp body (1) is close to the taper of the outer wall of one end of the expansion sleeve (3) and is the same as the taper of the inner wall of the expansion sleeve (3).