CN212227921U

CN212227921U - Utensil is examined in centre bore special use

Info

Publication number: CN212227921U
Application number: CN202021182615.8U
Authority: CN
Inventors: 韩小宁; 邓勇
Original assignee: Shenyang Deventer Power Machinery Manufacturing Co ltd
Current assignee: Shenyang Deventer Power Machinery Manufacturing Co ltd
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2020-12-25
Anticipated expiration: 2030-06-23

Abstract

The utility model discloses a special checking fixture for a center hole, which comprises a measuring body, wherein a first through hole is arranged at the upper end of an inner cavity of the measuring body, a second through hole is arranged at the lower end of the inner cavity of the measuring body, the first through hole is communicated with the second through hole, a dial indicator is fixedly arranged in the inner cavity of the first through hole, a supporting block is movably arranged in the inner cavity of the second through hole, a measuring pin is fixedly arranged on the lower surface of the supporting block, a key groove is arranged on the right side wall of the measuring pin, a third through hole is arranged at the lower end of the right side wall of the measuring body, a clamping rod is movably penetrated in the third through hole, a plurality of arc-shaped grooves are symmetrically arranged on the outer side wall of the clamping rod up and down, a plurality of grooves are symmetrically arranged on the inner side wall of the third through hole up and down, the problems that the, the working efficiency is reduced, and the practicability is poor.

Description

Utensil is examined in centre bore special use

Technical Field

The utility model relates to a detection device technical field, concrete field is an utensil is examined in centre bore special use.

Background

In the machining process of the shaft parts, the shaft parts generally need to be continuously machined through a lathe, a milling machine and a grinding machine, shaft center holes have an important role in subsequent machining, and generally, the center holes are used as references in rough machining and finish machining, so the depth of the center holes needs to meet the requirements specified in process files. The method for detecting whether the size of the central hole meets the standard at present is to place a standard steel ball which can form line contact with a conical surface of the central hole at the central hole, detect the height of the steel ball by a height gauge, and compare the height value with a height value obtained by measuring the standard central hole so as to determine whether the size of the central hole meets the standard.

The existing measuring and checking tool is low in measuring efficiency, complex to operate, low in working efficiency and poor in practicability in the conversion process of a non-working state and a working state.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an utensil is examined in centre bore special use to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a special checking fixture for a center hole comprises a measuring body, wherein a first through hole is formed in the upper end of an inner cavity of the measuring body, a second through hole is formed in the lower end of the inner cavity of the measuring body, the first through hole is communicated with the second through hole, a dial indicator is fixedly arranged in the inner cavity of the first through hole, a supporting block is movably arranged in the inner cavity of the second through hole, a measuring pin is fixedly arranged on the lower surface of the supporting block, a key groove is formed in the right side wall of the measuring pin, a third through hole is formed in the lower end of the right side wall of the measuring body, a clamping rod movably penetrates through the third through hole, a plurality of arc-shaped grooves are symmetrically formed in the upper and lower portions of the outer side wall of the clamping rod, a plurality of grooves are symmetrically formed in the upper and lower portions of the inner side wall of the third through hole, a limiting, the utility model discloses a dial indicator, including arc recess and stopper, the keyway inner chamber is inserted to the left end of pressing from both sides tight pole, the specific right side wall of volume just is located tight pole department fixed mounting and has the casing, the right-hand member activity of pressing from both sides tight pole runs through the casing, the fixed surface of pressing from both sides tight pole installs the baffle, the baffle is located the right side of arc recess, be equipped with the second spring between the right side wall of baffle and the inner chamber right side wall of casing, the third spring has been cup jointed on the measuring stick of percentage table, the upper end and the second through-hole fixed connection of third spring, the lower extreme and the supporting shoe of third spring are connected.

Preferably, the inner chamber fixed mounting of first through-hole has the lock sleeve, the lock sleeve is run through in the outer circumference activity of percentage table, the specific right side wall upper end threaded connection of volume has holding screw, holding screw and lock sleeve top are tight.

Preferably, a plurality of balls are movably embedded in the outer surface of each supporting block.

Preferably, the outer surfaces of the balls are provided with lubricating oil.

Preferably, an operating handle is fixedly mounted at the right end of the clamping rod.

Preferably, the left end of the clamping rod is fixedly provided with an anti-skid rubber pad.

Compared with the prior art, the beneficial effects of the utility model are that: a special checking fixture for a center hole is provided with a supporting block, a measuring pin, a key groove, a first spring, a ball, an arc-shaped groove, a clamping rod and a second spring, wherein the operation on a dial indicator is realized through the action of the supporting block and the third spring, the clamping rod is pushed under the action of external force, the limiting block is clamped with the arc-shaped groove under the action of the first spring, namely the measuring pin is clamped, the phenomenon that the dial indicator is damaged due to misoperation in a non-working state is avoided, the clamping rod is pulled in a working state, the limiting block is clamped with the arc-shaped groove on the left side under the action of the first spring, the clamping rod and the key groove are still in a splicing state, namely the measuring pin is limited, the operation is simple, the use is convenient, the working efficiency is improved, the operation difficulty is reduced, the problem that the existing measuring fixture is low in measuring efficiency and is solved in the conversion process between the non-working state and, the operation is complicated, the working efficiency is reduced, and the practicability is poor.

Drawings

Fig. 1 is a schematic view of a front view cross-sectional structure of the present invention;

fig. 2 is a partially enlarged schematic view of a portion a in fig. 1 according to the present invention.

In the figure: 1-measuring body, 2-first through hole, 3-second through hole, 4-dial indicator, 5-supporting block, 6-measuring pin, 7-key groove, 8-third through hole, 9-clamping rod, 10-arc groove, 11-groove, 12-limiting block, 13-first spring, 14-shell, 15-baffle, 16-second spring, 17-third spring, 18-locking sleeve, 19-set screw, 20-ball, 21-operating handle and 22-anti-skid rubber pad.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only 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.

Referring to fig. 1-2, the present invention provides a technical solution: a special checking fixture for a center hole, please refer to fig. 1, comprises a measuring body 1, wherein a first through hole 2 is arranged at the upper end of an inner cavity of the measuring body 1, a second through hole 3 is arranged at the lower end of the inner cavity of the measuring body 1, the first through hole 2 is communicated with the second through hole 3, a dial indicator 4 is fixed through the first through hole 2, a measuring pin 6 is supported through the second through hole 3, the dial indicator 4 is fixed in the inner cavity of the first through hole 2, a supporting block 5 is movably arranged in the inner cavity of the second through hole 3, the supporting block 5 is used for supporting a third spring 17, the measuring pin 6 is fixedly arranged on the lower surface of the supporting block 5, the measuring pin 6 is used for detecting the center hole, a key groove 7 is arranged on the right side wall of the measuring pin 6, a third through hole 8 is arranged at the lower end of the right side wall of the measuring body 1, a clamping rod 9 is conveniently arranged through the third through hole 8, through the cooperation of the clamping rod 9 and the key groove 7, the measuring pin 6 is limited, the separation of the measuring pin 6 from the second through hole 3 is avoided, please refer to fig. 2, the outer side wall of the clamping rod 9 is provided with a plurality of arc-shaped grooves 10 in up-down symmetry, the inner side wall of the third through hole 8 is provided with a plurality of grooves 11 in up-down symmetry, the inner cavity of each groove 11 is movably embedded with a limiting block 12, the cross-sectional shape of one end of each limiting block 12, which is far away from the first spring 13, is arc-shaped and is convenient to cooperate with the arc-shaped grooves 10 for use, the side walls, which are far away from the limiting blocks 12 on the upper side and the lower side, and the inner side walls of the grooves 11 are both fixedly provided with the first springs 13, the first springs 13 are used for providing power for the movement of the limiting blocks 12, the arc-shaped grooves 10 and the limiting blocks, the measuring pin 6 is limited when the dial indicator is in a working state, the clamping rod 9 is pulled, the limiting block 12 is clamped with the arc-shaped groove 10 on the left side, the measuring pin 6 is limited, the operation is simple and convenient to use, the working efficiency is improved, the operation difficulty is reduced, the popularization and the use are easy, the left end of the clamping rod 9 is inserted into the inner cavity of the key groove 7 to limit and support the measuring pin 6, the shell 14 is fixedly arranged on the right side wall of the measuring body 1 and positioned at the clamping rod 9, the right end of the clamping rod 9 movably penetrates through the shell 14, the baffle 15 is fixedly arranged on the outer surface of the clamping rod 9, the baffle 15 is used for extruding the second spring 16, the baffle 15 is positioned on the right side of the arc-shaped groove 10, the second spring 16 is arranged between the right side wall of the baffle 15 and the right side wall of the inner cavity of the shell 14, and the elasticity of the second spring 16 is smaller, the effect of the second spring 16 is to give the tight pole 9 of clamp and press from both sides tight power to the measuring pin 6, cup jointed the third spring 17 on the measuring stick of percentage table 4, be in contact state between the lower extreme of the measuring stick of percentage table 4 and the supporting shoe 5, the effect of the third spring 17 is convenient for supporting shoe 5 and measuring pin 6 up-and-down motion, extrude percentage table 4 simultaneously, the accurate numerical value that obtains on the percentage table 4, the upper end and the second through-hole 3 fixed connection of the third spring 17, the lower extreme and the supporting shoe 5 of third spring 17 are connected.

Particularly, the inner chamber fixed mounting of first through-hole 2 has lock sleeve 18, and the outer circumference activity of percentage table 4 runs through lock sleeve 18, and the right side wall upper end threaded connection who measures specifically 1 has holding screw 19, and holding screw 19 and lock sleeve 18 push up tightly, through holding screw 19's effect, realize pressing from both sides tightly lock sleeve 18, fixes percentage table 4 simultaneously, is not only convenient for change percentage table 4, and is convenient for fix the percentage table.

Specifically, the outer surface of the supporting block 5 is movably embedded into a plurality of balls 20, so that the friction force between the supporting block 5 and the side wall of the second through hole 3 is reduced, and the numerical value on the dial indicator 4 is more accurate.

Specifically, the outer surfaces of the balls 20 are provided with lubricating oil, which increases the lubrication of the balls 20, reduces the frictional force between the balls 20 and the support block 5, and reduces the frictional force between the balls 20 and the side walls of the second through holes 3.

Specifically, an operating handle 21 is fixedly attached to the right end of the clamp lever 9, and the clamp lever 9 is easily operated.

Specifically, the anti-slip rubber pad 22 is fixedly mounted at the left end of the clamping rod 9, and when the clamping rod 9 clamps the measuring pin 6, the friction force between the clamping rod 9 and the key groove 7 is increased through the anti-slip rubber pad 22, so that the clamping rod 9 is fixed to the measuring pin 6 more firmly.

The working principle is as follows: the utility model relates to an utensil is examined in centre bore special use, when using this device, with 2 fixed connection of percentage table 4 and first through-hole, cup joint third spring 17 on the measuring stick of percentage table 4, carry on spacingly through supporting shoe 5, measuring pin 6 is fixed and is moved spacingly under clamping rod 9's effect, under the effect of external force, promote clamping rod 9, stopper 12 is under first spring 13's effect and arc recess 10 joint, press from both sides measuring pin 6 promptly, avoid under non-operating condition, produce the maloperation, cause the damage to percentage table 4, when operating condition, stimulate clamping rod 9 promptly, stopper 12 is under first spring 13's effect and left arc recess 10 joint, not only spacing measuring pin 6 promptly, easy operation simultaneously, convenient to use, the work efficiency has been increased, reduce the operation degree of difficulty, therefore, the clothes hanger is strong in practicability.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the description with the record of drawing of description, and the concrete connection mode of each part all adopts conventional means such as ripe bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt prior art, and conventional model, including circuit connection adopts conventional connection mode among the prior art, does not detailed here again.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a utensil is examined in centre bore special use, includes the gauge body (1), its characterized in that: the measuring tool is characterized in that a first through hole (2) is formed in the upper end of an inner cavity of the measuring tool body (1), a second through hole (3) is formed in the lower end of the inner cavity of the measuring tool body (1), the first through hole (2) is communicated with the second through hole (3), a dial indicator (4) is fixedly arranged in the inner cavity of the first through hole (2), a supporting block (5) is movably arranged in the inner cavity of the second through hole (3), a measuring pin (6) is fixedly arranged on the lower surface of the supporting block (5), a key groove (7) is formed in the right side wall of the measuring pin (6), a third through hole (8) is formed in the lower end of the right side wall of the measuring tool body (1), a clamping rod (9) is movably arranged in the third through hole (8) in a penetrating mode, a plurality of arc-shaped grooves (10) are symmetrically formed in the upper portion and the lower portion of the outer side wall, the inner cavity of the groove (11) is movably embedded with a limiting block (12), the side wall of the upper side and the lower side of the limiting block (12) and the inner side wall of the groove (11) are fixedly provided with a first spring (13), the arc-shaped groove (10) and the limiting block (12) are matched for use, the left end of the clamping rod (9) is inserted into the inner cavity of the key groove (7), the right side wall of the gauge body (1) is fixedly provided with a shell (14) at the position of the clamping rod (9), the right end of the clamping rod (9) movably penetrates through the shell (14), the outer surface of the clamping rod (9) is fixedly provided with a baffle (15), the baffle (15) is positioned on the right side of the arc-shaped groove (10), a second spring (16) is arranged between the right side wall of the baffle (15) and the right side wall of the inner cavity of the shell (14), a measuring rod of the dial indicator (, the upper end of the third spring (17) is fixedly connected with the second through hole (3), and the lower end of the third spring (17) is connected with the supporting block (5).

2. The tool special for the center hole of claim 1, wherein: the inner chamber fixed mounting of first through-hole (2) has lock sleeve (18), the outer circumference activity of percentage table (4) runs through lock sleeve (18), the right side wall upper end threaded connection of the volume body (1) has holding screw (19), holding screw (19) and lock sleeve (18) top are tight.

3. The tool special for the center hole of claim 1, wherein: the outer surfaces of the supporting blocks (5) are movably embedded with a plurality of balls (20).

4. The tool special for the center hole of claim 3, wherein: and lubricating oil is arranged on the outer surfaces of the balls (20).

5. The tool special for the center hole of claim 1, wherein: an operating handle (21) is fixedly arranged at the right end of the clamping rod (9).

6. The tool special for the center hole of claim 1, wherein: and an anti-skid rubber pad (22) is fixedly arranged at the left end of the clamping rod (9).