CN210004930U

CN210004930U - auxiliary tool for precision hole measurement

Info

Publication number: CN210004930U
Application number: CN201920939689.2U
Authority: CN
Inventors: 向兵飞; 周造文; 兰惠; 康晓军; 余军; 江媛; 应剑洪; 阎飞; 李江云; 查磊; 熊旭; 胡雅玲
Original assignee: Jiangxi Hongdu Aviation Industry Group Co Ltd
Current assignee: Jiangxi Hongdu Aviation Industry Group Co Ltd
Priority date: 2019-06-21
Filing date: 2019-06-21
Publication date: 2020-01-31
Anticipated expiration: 2029-06-21

Abstract

The utility model discloses an appurtenance that precision hole was measured, including precision hole standard block, measurement contact I, measurement contact II, measurement contact III, measuring stick I, measuring stick II and percentage table, install measurement contact I on the end of measuring stick I, install measurement contact II and measurement contact III on the end of measuring stick II, measurement contact I, measurement contact II and measurement contact III contact and the circumference of the hole periphery of precision hole standard block and be in on the circumference with height, the middle part of measuring stick I and measuring stick II all is equipped with waist type hole, and this waist type hole fixes measuring stick I and measuring stick II through the fastener, and the percentage table is fixed in on measuring stick I or measuring stick II through the fastener, the beneficial effects of the utility model are that this instrument simple structure, can assemble, dismantle, and the commonality is strong, has improved the efficiency of bore hole.

Description

auxiliary tool for precision hole measurement

Technical Field

The utility model belongs to the technical field of machining, it is concrete, relate to kinds of precision hole measurement appurtenance.

Background

The method comprises the steps of forming a hole in the plane structure, wherein the hole is a stepped hole, wherein the stepped hole is a hole with a large diameter, and the hole is a hole with a small diameter and a hole with a large diameter, wherein the hole is a hole with a large diameter.

Disclosure of Invention

To the above-mentioned prior art, the utility model aims to overcome not enough among the prior art, adapt to reality needs, the utility model provides an kinds can need not to pull down the anti-boring cutter after the bore hole, need not to withdraw from the boring bar and just can conveniently measure the measurement appurtenance of the downthehole side opening of step precision outside the step hole.

In order to realize the purpose, the utility model adopts the technical scheme that kinds of precision finishing measuring appurtenance, including precision finishing standard block, measurement contact I, measurement contact II, measurement contact III, measuring stick I, measuring stick II and percentage table, install measurement contact I on the end of measuring stick I, install measurement contact II and measurement contact III on the end of measuring stick II, measurement contact I, measurement contact II and measurement contact III with on the hole periphery contact of precision finishing standard block and being in the circumference with height, the middle part of measuring stick I and measuring stick II all is equipped with waist type hole, and this waist type hole fixes measuring stick I and measuring stick II through the fastener, the percentage table is fixed in on measuring stick I or measuring stick II through the fastener.

And , the measuring rod I and the measuring rod II are identical in structure, the ends provided with the measuring contacts are of gradually-reduced step-shaped structures, and the measuring rod I and the measuring rod II form an H-shaped structure when fixedly connected.

And , the waist-shaped holes on the measuring rod I and the measuring rod II are the same in size and are positioned at the same level of .

, the fastening piece fixed on the kidney-shaped hole is a fastening bolt.

And , the fastener for fixing the dial indicator is a fastening screw.

The design principle of the utility model is that:

the method comprises the steps of designing three measuring contacts on a measuring rod I and a measuring rod II, positioning a measured aperture through the three measuring contacts, adjusting the positions of the two measuring rods through a waist-shaped hole to realize measurement of different apertures, fixing the two measuring rods through fastening bolts, fixing the measuring rods through a precision hole standard block which is close to the measured aperture, fixing the measuring rods, wherein the aperture measured by the measuring contacts is the aperture of the standard block, fixing a dial indicator on the measuring rod on the side through fastening screws, supporting a measuring head of the dial indicator on the measuring rod on the other side, zeroing the dial indicator, slightly loosening the fastening bolts, measuring the measured aperture, adjusting the measuring head of the dial indicator, reading a reading on the dial indicator, wherein the change value of the dial indicator is an aperture error value, and the value of the measured aperture can be obtained according to an aperture theoretical value.

The utility model has the advantages that:

(1) the boring cutter does not need to be detached, the boring rod does not need to be withdrawn out of the hole, the time for repeated detachment is reduced, and the boring efficiency is improved.

(2) The device can realize the measurement of precise holes with different hole diameters in fixed range, and has universality.

(3) The tool has the advantages of simple structure, short design period, relatively simple adjustment, assembly and disassembly, and convenient storage and management.

Drawings

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

fig. 2 is a schematic view of the present invention.

Wherein, 1-a precision hole standard block; 2-measuring the contact I; 3-measuring a contact II; 4-measuring contact III; 5-measuring rod I; 6-measuring rod II; 7-kidney shaped holes; 8-fastening bolts; 9-dial indicator; 10-a fastening screw; 11-a boring bar; 12-a locking screw; 13-a blade; 14-a cutter head; 15-the workpiece to be measured.

Detailed Description

In order to make the technical means, creation features, achievement purposes and effects of the present invention easy to understand, the following detailed description is made on the specific embodiments of the present invention with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

As shown in fig. 1 and 2, the utility model provides an kind of precision finishing measuring appurtenance, including precision finishing standard block 1, measurement contact I2, measurement contact II 3, measurement contact III 4, measuring stick I5, measuring stick II 6 and percentage table 9, install measurement contact I2 on the end of measuring stick I5, install measurement contact II 3 and measurement contact III 4 on the end of measuring stick II 6, measurement contact I2, measurement contact II 3 and measurement contact III 4 with on the hole periphery contact of precision finishing standard block 1 and being in the circumference with height, the middle part of measuring stick I5 and measuring stick II 6 all is equipped with waist type hole 7, and this waist type hole 7 fixes measuring stick I5 and measuring stick II 6 through the fastener, table 9 is fixed in on measuring stick I5 or measuring stick II 6 through the fastener, percentage table 9 is used for reading the error value of aperture actual value and theoretical value.

Preferably, the measuring rod I5 and the measuring rod II 6 are identical in structure, the ends provided with the measuring contacts are of gradually-reduced step-shaped structures, and the measuring rod I5 and the measuring rod II 6 form an H-shaped structure when fixedly connected.

Preferably, the positions and the sizes of the waist-shaped holes 7 on the measuring rod I5 and the measuring rod II 6 are the same, namely when the waist-shaped holes 7 are fixed, the measuring contacts on the measuring rod I5 and the measuring rod II 6 can be located at the same height of , and the positions of the two measuring rods can be adjusted by the waist-shaped holes 7, so that the measurement of different hole diameters is realized.

Preferably, the fastening piece fixed on the kidney-shaped hole 7 is a fastening bolt 8.

Preferably, the fastening piece for fixing the dial indicator 9 is a fastening screw 10.

The working process of the utility model is as follows:

a. preparing a precision hole standard block 1 with a hole diameter close to that of a machined hole before boring;

b. clamping a measuring contact I2, a measuring contact II 3 and a measuring contact III 4 of the installed precision hole measuring auxiliary tool on the inner side of a hole of a precision hole standard block 1, screwing a fastening bolt 8 to fix the positions of two measuring rods, and measuring the value of the hole of the precision hole standard block 1 by the measuring contacts;

c. fixing the dial indicator 9 on the measuring rod II 6, enabling a measuring head of the dial indicator 9 to be propped against the measuring rod I5, zeroing the dial indicator 9, and then screwing the fastening screw 10;

d. after boring, the boring rod 11 does not need to be withdrawn out of the hole, the two measuring rods are directly extended into the processed hole, the fastening bolt 8 is loosened, three measuring contacts on the measuring rods are all propped against the processed hole wall, and then the fastening bolt 8 is screwed;

e. and checking the pointer change of the dial indicator 9, and adding or subtracting the value of the hole of the precision hole standard block 1 to obtain the hole diameter value of the processed hole.

Claims

The auxiliary tool for measuring precision holes is characterized by comprising a precision hole standard block (1), a measuring contact I (2), a measuring contact II (3), a measuring contact III (4), a measuring rod I (5), a measuring rod II (6) and a dial indicator (9), wherein the measuring contact I (2) is installed on the end of the measuring rod I (5), the measuring contact II (3) and the measuring contact III (4) are installed on the end of the measuring rod II (6), the measuring contact I (2), the measuring contact II (3) and the measuring contact III (4) are in contact with the inner hole circumferential surface of the precision hole standard block (1) and are located on the circumference with the same height of , waist-shaped holes (7) are formed in the middle portions of the measuring rod I (5) and the measuring rod II (6), the measuring rod I (5) and the measuring rod II (6) are fixed through fasteners by the waist-shaped holes (7), and the dial indicator (9) is fixed on the measuring rod I (5) or the measuring rod II (6) through fasteners.
2. The auxiliary tool for precision hole measurement as claimed in claim 1, wherein the measuring rod I (5) and the measuring rod II (6) have the same structure, the ends provided with the measuring contacts are of a gradually-reduced step-shaped structure, and the measuring rod I (5) and the measuring rod II (6) form an H-shaped structure when fixedly connected.
3. The auxiliary tool for precision hole measurement as claimed in claim 1, wherein the waist-shaped holes (7) on the measuring rod I (5) and the measuring rod II (6) are the same in size and are at the same level of .
4. The auxiliary tool for precision hole measurement according to claim 1, wherein: the fastening piece fixed on the kidney-shaped hole (7) is a fastening bolt (8).
5. The auxiliary tool for precision hole measurement according to claim 1, wherein: the fastening piece for fixing the dial indicator (9) is a fastening screw (10).