CN211639549U

CN211639549U - Segment difference grinding wheel

Info

Publication number: CN211639549U
Application number: CN201922208772.5U
Authority: CN
Inventors: 殷银兵
Original assignee: Taizhou Jumao Electronic Technology Co ltd
Current assignee: Taizhou Jumao Electronic Technology Co ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-10-09
Anticipated expiration: 2029-12-11

Abstract

The utility model belongs to the technical field of the emery wheel, concretely relates to poor emery wheel of section, including the base member and with the abrasive material ring of the coaxial setting of base member, the abrasive material ring concreties on the outer circumference of base member, the through-hole has been seted up at the middle part of base member, one side of base member is the reference surface, one side ring that the reference surface was kept away from to the base member is equipped with the chamfer face of laminating with PCB drill point chamfer, the abrasive material ring concreties on the outer circumference of base member and chamfer face. This poor emery wheel of section has when processing PCB drill point, and the abrasive material ring can use up completely, has reduced the abrasive material ring extravagant, reduce cost's effect.

Description

Segment difference grinding wheel

Technical Field

The utility model belongs to the technical field of the emery wheel, concretely relates to poor emery wheel of section.

Background

In the processing process of the PCB drill point and the PCB milling cutter, grinding or polishing needs to be carried out through a grinding wheel.

The outer surface of the PCB drill point is provided with a chamfer, and the emery wheel is at the in-process of processing the PCB drill point, and the diamond on the emery wheel can be worn and torn according to the shape of PCB drill point gradually, and then makes and has an oblique angle on the emery wheel all the time, along with the wearing and tearing gradually of diamond, the oblique angle is more and more close to the emery wheel base member, and at this moment, if the emery wheel continues to use, can cause emery wheel base member or PCB drill point damage. Thus, when the diamonds wear to a bevel close to the grinding wheel base, the grinding wheel is not used, leaving about 2mm of diamonds on the grinding wheel unusable, causing diamond waste and increasing the cost of the grinding wheel.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a poor emery wheel of section to when solving among the prior art abrasive wheel machining PCB drill point, cause diamond in the emery wheel extravagant, increase the technical problem of emery wheel cost.

In order to solve the technical problem, the utility model provides a segment difference grinding wheel, which comprises a base body and a grinding ring which is coaxial with the base body, wherein the grinding ring is fixedly connected on the outer circumference of the base body, the middle part of the base body is provided with a through hole,

one side of base member is the reference surface, one side ring that the reference surface was kept away from to the base member is equipped with the chamfer face of laminating with PCB drill point chamfer, the abrasive ring concreties on the outer circumference and the chamfer face of base member.

Further: the angle of the chamfer surface is 16-17 degrees.

Further: and a load reduction step is arranged on one side of the base body, which is positioned on the reference surface.

Further: the base body is provided with a plurality of circular counter bores which are uniformly distributed along the center of the through hole.

Further: a cooling liquid channel is formed in the base body, a liquid inlet communicated with the cooling liquid channel is formed in the outer side face of the base body, and a sealing plug is arranged on the liquid inlet.

Further: a plurality of chip grooves are formed in the abrasive ring and are arranged along the circumferential array of the abrasive ring.

The beneficial effects of the utility model are that, the utility model discloses a poor emery wheel of section is provided with the chamfer face according to PCB drill point chamfer on the base member, and at the in-process that the emery wheel used, the abrasive material on the abrasive material ring wears out gradually, and when the abrasive material worn out to last, the chamfer face laminating on PCB drill point chamfer and the base member can use up the abrasive material completely this moment, has not only practiced thrift the resource, has still reduced the cost.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a front view of a preferred embodiment of the stepped difference grinding wheel of the present invention;

FIG. 2 is a cross-sectional view of a preferred embodiment of the stepped difference grinding wheel of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is a front view of a preferred embodiment of the coolant passages and flutes of the present invention.

In the figure:

1. a substrate; 11. a reference plane; 2. an abrasive ring; 3. a through hole; 4. chamfering; 5. a load reduction step; 6. A circular counter bore; 7. a coolant passage; 71. a liquid inlet; 72. a sealing plug; 8. a chip groove.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

FIG. 1 is a schematic view of a preferred embodiment of the segment difference grinding wheel of the present invention;

as shown in fig. 1, the present embodiment provides a segment difference grinding wheel, which includes a base 1 and a grinding ring 2 coaxially disposed with the base 1, wherein a through hole 3 facilitating the installation of the grinding wheel is formed in the middle of the base 1.

Fig. 2 is an alternative sectional view of the chamfer 4 of the present invention;

optionally, as shown in fig. 3, one side of the base 1 is a reference surface 11, a chamfered surface 4 attached to a chamfer of a PCB drill is annularly arranged on one side of the base 1 away from the reference surface 11, and an angle of the chamfered surface 4 is between 16 ° and 17 °. An abrasive ring 2 is affixed to the outer circumference of the substrate 1 and the chamfered surface 4. The grinding wheel is at the in-process of processing PCB drill point, and abrasive ring 2 wears gradually, and when abrasive ring 2 worn out to the end, the chamfer and the laminating of chamfer face 4 of PCB drill point, and then make abrasive ring 2 can all use up, not only practiced thrift the resource, still the cost is reduced.

As shown in fig. 2, a load reduction step 5 is arranged on one side of the base 1 on the reference surface 11, and the load reduction step 5 can reduce the weight of the grinding wheel, so that the grinding wheel is not easy to shake due to centrifugal force in the rotating use process, and the stability of the grinding wheel in the use process is improved.

As shown in FIG. 1, a plurality of circular counter bores 6 for fixing a grinding wheel are arranged on a base body 1, and the circular counter bores 6 are arranged along the circumferential direction of the base body 1 in an array manner.

As shown in fig. 4, a cooling liquid channel 7 is opened inside the base body 1, a liquid inlet 71 communicated with the cooling liquid channel 7 is arranged on the outer side surface of the base body 1, and a sealing plug 72 is arranged on the liquid inlet 71. Before the grinding wheel is used, cooling liquid is firstly poured into the cooling liquid channel 7 from the liquid inlet 71, so that the heat generated during grinding is reduced in the using process of the grinding wheel, the workpiece damage is avoided, and the processing quality is improved.

As shown in fig. 4, a plurality of chip grooves 8 are formed in the circumference of the abrasive ring 2 in an array manner, and the chip grooves 8 can discharge heat generated by the substrate 1 in time, so that the phenomenon of distortion or cracking of the substrate due to heat concentration in the grinding process is avoided.

In view of the above, it is desirable to provide,

the grinding wheel is at the in-process of processing PCB drill point, and the abrasive material on the abrasive material ring 2 wears gradually, and when abrasive material ring 2 worn out to the end, chamfer on the PCB drill point and the chamfer face 4 laminating on the base member 1, at this moment, the abrasive material on the abrasive material ring 2 can all wear to use up, and then can practice thrift the resource of abrasive material ring 2, can also reduce the cost of emery wheel.

All the parts of the devices selected in the present application are general standard parts or parts known to those skilled in the art, and the structures and principles thereof can be known to those skilled in the art through technical manuals or through routine experimental methods.

In the description of the embodiments of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; either mechanically or electrically. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways, and the above-described apparatus embodiments are merely illustrative.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a segment difference emery wheel, includes base member (1) and abrasive ring (2) with base member (1) coaxial setting, abrasive ring (2) concreties on the outer circumference of base member (1), through-hole (3), characterized by have been seted up at the middle part of base member (1):

one side of base member (1) is reference surface (11), one side ring that reference surface (11) were kept away from in base member (1) is equipped with chamfer face (4) with the laminating of PCB drill point chamfer, abrasive ring (2) concreties on the outer circumference of base member (1) and chamfer face (4).

2. A stepped difference grinding wheel according to claim 1, wherein:

the angle of the chamfer surface (4) is 16-17 degrees.

3. A stepped difference grinding wheel according to claim 1, wherein:

the abrasive ring (2) is carborundum.

4. A stepped difference grinding wheel according to claim 1, wherein:

and a load reducing step (5) is arranged on one side of the base body (1) on the reference surface (11).

5. A stepped difference grinding wheel according to claim 1, wherein:

a plurality of circular counter bores (6) are arranged on the base body (1), and the circular counter bores (6) are uniformly distributed along the center of the through hole (3).

6. A stepped difference grinding wheel according to claim 1, wherein:

the cooling liquid cooling device is characterized in that a cooling liquid channel (7) is formed in the base body (1), a liquid inlet (71) communicated with the cooling liquid channel (7) is formed in the outer side face of the base body (1), and a sealing plug (72) is arranged on the liquid inlet (71).

7. A stepped difference grinding wheel according to claim 6, wherein:

a plurality of chip grooves (8) are formed in the abrasive ring (2), and the chip grooves (8) are arranged along the circumferential array of the abrasive ring (2).