CN-116810623-B - Grinding tool with conformal function

CN116810623BCN 116810623 BCN116810623 BCN 116810623BCN-116810623-B

Abstract

The invention relates to a grinding tool with a shape preserving function, which comprises a base body, wherein a working ring is fixedly sleeved at the lower end of the base body and is used for processing a transitional curved surface of a boss surface arranged on a workpiece, the working part of the working ring is of a curve structure, the shape of the working ring is identical to that of the transitional curved surface of the boss surface, a water storage area is arranged in the base body, a plurality of water through grooves which are communicated with the water storage area and penetrate through the water storage area from inside to outside are uniformly arranged at intervals along the circumferential direction of the lower end of the base body, and the circumferential arc length of each water through groove is gradually increased from inside to outside. The invention sets the functional structure with equal radial abrasion ratio of each point in the axial direction of the outline of the diamond ring working part of the grinding tool according to the shape of the transition curved surface of the workpiece and the machining allowance by utilizing the abrasion ratio mechanism, thereby achieving the function of shape retention.

Inventors

SONG JINGXIN
Liang anning
LONG HUILING
XIE MINGXING
GUO XINLING
WANG ZHIYONG
WANG WEIJIAN
SONG YOUPENG

Assignees

宋京新
桂林创源金刚石有限公司

Dates

Publication Date: 20260508
Application Date: 20211230

Claims (9)

1. The grinding tool with the shape preserving function is characterized by comprising a base body (1), wherein a working ring (4) is fixedly sleeved at the lower end of the base body (1), the working ring (4) is used for processing a transition curved surface of a boss surface (3) arranged on a workpiece (2), the working part of the working ring (4) is of a curve structure, the shape of the working ring is the same as that of the transition curved surface of the boss surface (3), and each parameter of the working ring (4) and each parameter of the transition curved surface of the workpiece (2) meet the following relational expression: B≤B 1 ≤(B+X) (1); 0<B 2 ≤X (2); In the formulas (1) and (2), B is the total width of the arc surface of the boss surface (3) and the tolerance is +/-X, B1 is the maximum ring width of the working ring (4), and B2 is the end face ring width of the working ring (4); The novel water storage device is characterized in that a water storage area (5) is arranged in the base body (1), a plurality of water through grooves (7) which are communicated with the water storage area (5) and penetrate through the water storage area (5) internally and externally are uniformly arranged at the lower end of the base body (1) at intervals along the circumferential direction, the circumferential arc length of each water through groove (7) is gradually increased from inside to outside, and the parameters among the boss surface (3), the water through grooves (7) and the working ring (4) meet the following relational expression: L 1 :l 1 =L:l (3); Wherein l1=pi Φ -n b; l1=pi=phi-n x b 1; The diameter consumption of each axial point of the using part of the grinding tool tends to be the same; In the formula (3), L is the circumference of the top of the outer circumferential surface of the boss surface (3), L is the circumference of a joint line between the bottom of the boss surface (3) and the plane base surface of the workpiece (2), L1 is the accumulated length of arc length of each section of the outer diameter of the working ring (4), L1 is the accumulated length of arc length of each section of the inner diameter of the working ring (4), phi is the outer diameter of the working ring (4), phi is the inner diameter of the working ring (4), n is the number of water through grooves (7), b is the outer diameter opening Zhou Xiangkuan of each water through groove (7), b1 is the inner diameter inlet Zhou Xiangkuan of each water through groove (7), and pi is the circumference rate.
2. The grinding tool with the shape retaining function according to claim 1, wherein the base body (1) comprises an inner base body (101) and an outer base body (102), the outer base body (102) is of an annular structure, the working ring (4) is fixedly sleeved at the lower end of the outer base body (102), a plurality of water through grooves (7) are uniformly distributed at intervals at the lower end of the outer base body (102) along the circumferential direction of the outer base body (102) and are positioned in the working ring (4), the inner base body (101) is fixedly installed in the outer base body (102), the water storage area (5) is formed between the lower end of the inner base body and the upper end and the inner wall of the outer base body (102) in a surrounding mode, a water through channel (6) for cooling water to pass through is reserved between the lower end of the inner base body and the inner wall of the outer base body (102), and the upper end of the inner base body (101) penetrates through the upper end of the outer base body (102) to extend to the outer side of the outer base body (102) and is used for being connected with a driving piece for driving the inner base body to rotate.
3. The grinding tool with the shape preserving function according to claim 2, wherein the water through grooves (7) are equally divided into two groups of water through grooves, the two groups of water through grooves are distributed at the lower end of the outer base body (102) along the axial direction of the outer base body (102), and the plurality of water through grooves (7) in the two groups of water through grooves are alternately distributed at intervals in sequence along the circumferential direction of the outer base body (102).
4. The grinding tool with the shape preserving function according to claim 2, wherein a plurality of blades (9) are fixedly arranged between the lower end of the inner base body (101) and the outer base body (102) at uniform intervals along the circumferential direction of the outer base body (102).
5. The grinding tool with the shape-preserving function according to claim 4, wherein a water baffle (8) is arranged at the lower end of the inner base body (101), the water baffle (8) is perpendicular to the axial direction of the outer base body (102) and is positioned at one side of the blade (9) close to the lower end of the outer base body (102), and the water passage (6) is formed between the edge of the water baffle (8) and the inner wall of the outer base body (102).
6. The grinding tool with a conformal function according to claim 5, wherein the water baffle (8) is a circular plate and is coaxially distributed with the outer substrate (102).
7. The grinding tool with conformal function according to claim 2-6, wherein the inner diameter of the lower end of the outer substrate (102) is larger than the inner diameter of the upper end thereof.
8. The grinding tool with the conformal function according to any one of claims 2-6, wherein the inner substrate (101) has a structure with a thick lower end and a thin upper end, and a slope structure on a side of the thick end near the outer substrate (102).
9. The grinding tool with a conformal function according to any one of claims 1-6, wherein the working ring (4) is a diamond ring.

Description

Grinding tool with conformal function Technical Field The invention relates to the technical field of grinding tools, in particular to a grinding tool with a conformal function. Background When a boss surface is machined on a plane base surface of a workpiece such as a mobile phone glass backboard and the boss surface and the plane base surface are required to be transited by a curved surface, an electroplating forming grinding tool is usually selected for forming precision machining, and the electroplating grinding tool belongs to a single-layer grinding material and is a micro-consumption 'non-deformation' grinding tool, but also has a short service life because the electroplating grinding tool is a single-layer grinding material, and the grinding tool needs to be frequently replaced in the machining process. The impregnated consumable forming grinding tool of other binding agents is only suitable for processing in the factory and can only be used in a short time within the shape tolerance range, the shape of the grinding tool is easy to lose the original shape due to the difference of processing amount and processing conditions (such as cooling and the like) in the use process, or the structural problem, the shape of a processed workpiece is not suitable for the requirement, the effective life of the grinding tool is very short, the grinding tool can be reused after frequent shaping and repairing, the conventional forming grinding tool is difficult to adopt an advanced high-speed (the linear speed is higher than 45 m/min) grinding technology due to low cooling effect and poor chip removing function, and the grinding tool is complex in repairing, troublesome to use, low in processing efficiency and high in use cost. Disclosure of Invention The invention aims to solve the technical problem of providing a grinding tool with a conformal function and aims to solve the problem in the prior art. The technical scheme for solving the technical problems is as follows: The grinding tool with the shape-preserving function comprises a base body, wherein a working ring is fixedly sleeved at the lower end of the base body and is used for processing a transitional curved surface of a boss surface arranged on a workpiece, the working part of the working ring is of a curve structure, the shape of the working part is identical to that of the transitional curved surface of the boss surface, and each parameter of the working ring and each parameter of the transitional curved surface of the workpiece meet the following relational expression: B≤B1≤(B+X) (1); 0<B2≤X (2); In the formulas (1) and (2), B is the total width of the arc surface of the boss surface, the tolerance is +/-X, B 1 is the maximum ring width of the working ring, and B 2 is the end face ring width of the working ring; the novel water storage device comprises a base body, wherein a water storage area is arranged in the base body, a plurality of water through grooves which are communicated with the water storage area and penetrate through the water storage area from inside to outside are uniformly arranged at the lower end of the base body at intervals along the circumferential direction of the base body, the circumferential arc length of each water through groove is gradually increased from inside to outside, and the parameters among the boss surface, the water through grooves and the working ring satisfy the following relational expression: L1:l1=L:l (3); wherein L 1＝π*Φ-n*b;l1＝π*φ-n*b1; in the formula (3), L is the circumference of the top of the outer peripheral surface of the boss surface, L is the circumference of a joint line between the bottom of the boss surface and the plane base surface of the workpiece, L 1 is the accumulated length of arc length of each section of the outer diameter of the working ring, L 1 is the accumulated length of arc length of each section of the inner diameter of the working ring, phi is the outer diameter of the working ring, phi is the inner diameter of the working ring, n is the number of water through grooves, b is the outer diameter opening Zhou Xiangkuan of each water through groove, b 1 is the inner diameter inlet Zhou Xiangkuan of each water through groove, and pi is the circumference ratio. The invention has the advantages that during processing, under the conditions that the radial machining allowance of each point in the axial direction of the transitional curved surface is equal and the axial machining allowance is small after rough machining, the workpiece is horizontally and fixedly placed, the base body is vertically arranged above the workpiece together with the working ring, the end face of the working ring is tightly attached to the plane basal plane of the workpiece, and the rotating working part of the working ring carries out finish machining on the peripheral surface of the boss surface, namely the transitional curved surface. The axial direction of the machining is one-time micro machining, and the rad