CN113154988A

CN113154988A - Measuring device for rapidly detecting small-size inner groove diameter value and radial runout value

Info

Publication number: CN113154988A
Application number: CN202110513254.3A
Authority: CN
Inventors: 钟传文
Original assignee: Cec Jinjiang Info Industrial Co ltd
Current assignee: Cec Jinjiang Info Industrial Co ltd
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2021-07-23

Abstract

The invention relates to a measuring device for rapidly detecting the diameter value and the radial run-out value of a small-size inner groove, which comprises a clamping part and a measuring part which are arranged oppositely; the clamping part is used for rotatably and horizontally fixing the workpiece with the groove; the measuring part comprises an upright post, a shaft sleeve and a mounting rack; the upper end of the upright post is provided with a dial indicator through a mounting rack, the lower end of the upright post is provided with a baffle plate, and a shaft sleeve capable of sliding up and down is sleeved on the upright post; a compression spring is arranged between the upper end of the shaft sleeve and the mounting frame, the lower end of the shaft sleeve is abutted against the baffle, and a measuring head is mounted on the shaft sleeve through the measuring frame; the needle end of the dial indicator is abutted against the measuring frame, the measuring head is abutted against the groove of the measured workpiece, and the vertical runout of the measuring head drives the vertical runout of the needle end of the dial indicator through the measuring frame. The invention achieves the following beneficial effects: simple structure, with low costs, can quick measurement, the commonality is high.

Description

Measuring device for rapidly detecting small-size inner groove diameter value and radial runout value

Technical Field

The invention relates to the technical field of groove member radial runout measurement, in particular to a measuring device for rapidly detecting a small-size inner groove diameter value and a small-size inner groove radial runout value.

Background

In hydraulic and pneumatic transmission devices, the selection of a sealing element and the machining of a sealing element mounting groove are often involved, and the diameter size and the radial run-out value of an inner groove are directly related to the sealing performance and the transmission performance of the transmission device.

At present, for a groove with a larger size for installing a sealing element, the diameter and the radial run-out value or the coaxiality of the machined inner groove are relatively easy to measure, the diameter can be measured by an inner groove caliper and an inner diameter dial indicator, and the radial run-out value or the coaxiality can be measured by a three-coordinate measuring instrument or a coaxiality measuring instrument.

However, the measurement of small-sized grooves is not a good method, and no general measuring tool or measuring device is available on the market for rapid measurement.

Therefore, the scheme designs an auxiliary measuring device for the small-size groove piece.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide the measuring device which has the advantages of simple structure, low cost, high universality and capability of quickly measuring the diameter value and the radial runout value of the small-size inner groove.

The purpose of the invention is realized by the following technical scheme: the measuring device for rapidly detecting the diameter value and the radial runout value of the small-size inner groove comprises a clamping part and a measuring part;

the clamping part is used for rotatably and horizontally fixing the workpiece with the groove;

the measuring part comprises an upright post, a shaft sleeve and a mounting rack;

the upper end of the upright post is provided with a dial indicator through a mounting rack, the lower end of the upright post is provided with a baffle plate, and a shaft sleeve capable of sliding up and down is sleeved on the upright post;

a compression spring is arranged between the upper end of the shaft sleeve and the mounting frame, the lower end of the shaft sleeve is abutted against the baffle, and a measuring head is mounted on the shaft sleeve through the measuring frame;

the needle end of the dial indicator is abutted against the measuring frame, the measuring head is abutted against the groove of the measured workpiece, and the vertical runout of the measuring head drives the vertical runout of the needle end of the dial indicator through the measuring frame.

Further, the workpiece to be measured is in a cylinder shape, and the wall of an inner cylinder of the workpiece to be measured is provided with a coaxial annular groove; the measuring head comprises a horizontal columnar part and a vertical stress end part, wherein the columnar part extends into the cylinder of the measured workpiece, and the stress end abuts against the groove. I.e. mainly to enable the measurement of circular run-out.

Furthermore, the baffle is sleeved on the upright post in a threaded manner to form a height adjustable mechanism. When the height of the measured position of the measured workpiece changes, the height of the measuring head is adjusted through the baffle.

Furthermore, the shaft sleeve is provided with a key groove, the cylindrical surface of the upright post is fixed with a key, and the key groove are matched and slidably mounted. The shaft sleeve is ensured to only slide up and down without rotating.

Preferably, the measuring frame is in a horizontal plate state, and the shaft sleeve penetrates through the measuring frame and is locked through the locking stud A; the measuring head is inserted at one end of the measuring frame and locked by a locking stud B.

Preferably, the upper end of the upright post is in a stepped shaft shape, and the mounting frame penetrates through the step and is locked by the locking stud C; and the column part of the needle end of the dial indicator penetrates through the mounting frame and is locked through the locking stud D.

Further, the measuring part still include the base, the lower extreme screw thread of stand is installed on the base and its lower extreme still dies on the base through lock nut A lock. The fixing of the upright post is realized.

Preferably, the clamping part comprises a three-jaw chuck, and the three-jaw chuck clamps the workpiece to be tested and can rotate. The clamping is convenient, and the rotation of the workpiece to be detected is convenient.

The invention has the following advantages:

(1) the telescopic action of the needle end of the dial indicator is transmitted through a measuring frame, the measuring frame extends into a workpiece to be measured through a measuring head, and the synchronous action of the measuring frame is realized through a compression spring, so that the rapid measurement is realized; the whole device has simple structure and low cost, can be applied to factories in large batch and meets the requirement of work measurement;

(2) the baffle can be adjusted according to the actual measured height of the measured workpiece, and the universality is high;

(3) the arrangement of the spindle base, the spindle and the three-jaw chuck is equivalent to a simple machine tool, but the cost is low.

Drawings

FIG. 1 is a schematic sectional view of the present invention;

FIG. 2 is a schematic structural view of the present invention;

in the figure: 1-spindle seat, 2-rotating shaft, 3-bearing, 4-three-jaw chuck, 5-workpiece to be measured, 6-dial indicator, 7-mounting rack, 8-upright column, 9-locking stud C, 10-compression spring, 11-locking stud A, 12-shaft sleeve, 13-locking stud E, 14-key, 15-base, 16-locking nut A, 17-baffle, 18-measuring rack, 19-measuring head, 20-bottom plate, 21-locking screw, 22-locking nut B, 23-gasket, 24-locking stud D, 25-locking stud B, 26-groove and 27-threaded hole.

Detailed Description

The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following.

As shown in fig. 1 and 2, the measuring device for rapidly detecting the diameter value and the radial runout value of the small-sized inner groove comprises a clamping part and a measuring part, wherein a workpiece 5 to be measured is arranged on the clamping part, the workpiece 5 to be measured can rotate, and a dial indicator 6 is arranged on the measuring part; the measurement is carried out by providing the measuring stand 18 as an intermediate member, transferring the circular runout of the groove 26 of the workpiece 5 to be measured to the measuring stand 18, and then transferring the runout to the dial indicator 6 by the measuring stand 18.

It should be noted that the workpiece 5 to be measured is a cylindrical member, and the wall of the inner cylinder of the cylindrical member has a coaxial annular groove 26, so that when the workpiece 5 to be measured rotates, the runout measurement of the groove 26 is realized.

For the measuring part, the upright 8, the shaft sleeve 12, the mounting frame 7 and the base 15 are included.

For the fixation of the upright 8: the base 15 is provided with a threaded hole 27, the lower end of the upright post 8 is assembled with the threaded hole 27, the upright post 8 is screwed with a lock nut A16, and the lock nut A16 is abutted against the surface of the base 15, so that the upright post 8 is fixedly installed.

A baffle plate 17 is sleeved on the lower part of the upright post 8 through threads, a shaft sleeve 12 capable of sliding up and down is sleeved on the middle part of the upright post, the lower end of the shaft sleeve 12 is abutted against the baffle plate 17, and the top of the shaft sleeve is in a step shape and is fixedly provided with a mounting frame 7; the upright post 8 is also sleeved with a compression spring 10, and two ends of the compression spring 10 respectively abut against the lower surface of the mounting frame 7 and the upper surface of the baffle 17. When the position of the annular groove 26 of the workpiece 5 to be measured changes, the position of the baffle 17 is adjusted to adapt the adjustment.

A measuring rack 18 is fixed on the shaft sleeve 12, and the measuring rack 18 moves along with the shaft sleeve 12. The mounting rack 7 is provided with the dial indicator 6, and the needle end of the dial indicator 6 passes through the mounting rack 7 and then abuts against the measuring rack 18; the measuring head 19 is mounted at the end of the measuring frame 18, the measuring head 19 comprises a horizontal column part and a vertical stress end part, the column part extends into the cylinder of the measured workpiece 5, and the stress end is abutted against the annular groove 26 of the cylinder wall. When the measured workpiece 5 rotates, the lowest point of the annular groove 26 is jumped upwards compared with the axis of the measured workpiece 5, the measuring head 19 is driven to move upwards, the measuring head 19 drives the measuring frame 18 to move upwards together when moving upwards, and the needle end of the dial indicator 6 is pushed upwards by the upward movement of the measuring frame 18, so that the data display of the dial indicator 6 is realized.

In order to realize the smooth up-and-down sliding action of the shaft sleeve 12, a key groove in the up-and-down direction is formed on the inner wall of the shaft sleeve 12, a key 14 is fixed on the upright post 8 through a locking stud E, and the shaft sleeve 12 realizes the up-and-down sliding through the matching of the key groove and the key 14. While allowing sleeve 12 to be prevented from rotating.

In this embodiment, the measuring rack 18 is in a horizontal plate state, and the shaft sleeve 12 penetrates through the measuring rack 18 and is locked by the locking stud a 11; the measuring head 19 is inserted into one end of the measuring stand 18 and is locked by a locking stud B25.

In this embodiment, the mounting frame 7 is inserted into the step of the upright post 8 and locked by the locking stud C9; the column part of the needle end of the dial indicator 6 passes through the mounting frame 7 and is locked through a locking stud D24.

The clamping part is used for horizontally fixing a workpiece 5 with a groove in a rotatable manner and comprises a three-jaw chuck 4 and a spindle seat 1.

The bottom of the spindle seat 1 is fixed on a bottom plate 20 through a locking screw 21, and a horizontal rotating shaft 2 is arranged on the spindle seat 1 through a bearing 3; the spindle 2 penetrates the spindle stock 1, and has a three-jaw chuck 4 at its end opposite to the measuring part, and is fastened to the spindle stock 1 at its other end by a washer 23 and a lock nut B22. Thus, a simple machine tool shape is formed.

The spindle 2 has a central through hole, and a workpiece 5 to be measured is horizontally clamped by a three-jaw chuck 4.

The above examples only represent preferred embodiments, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims

1. Measuring device of groove diameter value and runout value in short-term test small-size, its characterized in that:

comprises a clamping part and a measuring part which are arranged oppositely;

the clamping part is used for horizontally fixing the workpiece (5) to be measured with the groove (26) in a rotatable manner;

the measuring part comprises a stand column (8), a shaft sleeve (12) and a mounting rack (7);

the upper end of the upright post (8) is provided with a dial indicator (6) through a mounting rack (7), the lower end of the upright post is provided with a baffle plate (17), and a shaft sleeve (12) capable of sliding up and down is sleeved on the upright post;

a compression spring (10) is arranged between the upper end of the shaft sleeve (12) and the mounting frame (7), the lower end of the shaft sleeve is abutted against the baffle plate (17), and a measuring head (19) is arranged on the shaft sleeve through a measuring frame (18);

the needle end of the dial indicator (6) is abutted against the measuring frame (18), the measuring head (19) is abutted against the groove (26) of the measured workpiece (5), and the vertical runout of the measuring head (19) drives the vertical runout of the needle end of the dial indicator (6) through the measuring frame (18).

2. The measuring device for rapidly detecting the diameter value and the radial run-out value of the small-sized inner groove according to claim 1, wherein: the workpiece (5) to be measured is in a cylindrical shape, and the wall of the inner cylinder of the cylindrical part is provided with a coaxial annular groove (26);

the measuring head (19) comprises a horizontal column part and a vertical stress end head part, the column part extends into the cylinder of the measured workpiece (5), and the stress end head is abutted to the groove (26).

3. The measuring device for rapidly detecting the diameter value and the radial run-out value of the small-sized inner groove according to claim 2, wherein: the baffle (17) and the locking nut A (16) are arranged on the upright post (8) to form a height adjustable mechanism.

4. The measuring device for rapidly detecting the diameter value and the radial run-out value of the small-sized inner groove according to claim 3, wherein: the shaft sleeve (12) is provided with a key groove, the cylindrical surface of the upright post (8) is fixed with a key (14), and the key (14) and the key groove are in matched sliding installation.

5. The measurement device for rapidly detecting the diameter value and the radial run-out value of the small-sized inner groove according to claim 4, wherein: the measuring frame (18) is in a horizontal plate state, and the shaft sleeve (12) penetrates through the measuring frame (18) and is locked through the locking stud A (11);

the measuring head (19) is inserted at one end of the measuring frame (18) and locked through a locking stud B (25).

6. The measuring device for rapidly detecting the diameter value and the radial run-out value of the small-sized inner groove according to claim 5, wherein: the upper end of the upright post (8) is in a stepped shaft shape, and the mounting rack (7) penetrates through the step and is locked by a locking stud C (9);

and the column part of the needle end of the dial indicator (6) penetrates through the mounting frame (7) and is locked through the locking stud D (24).

7. The measuring device for rapidly detecting the diameter value and the radial run-out value of the small-sized inner groove according to any one of claims 4, 5 or 6, wherein: the measuring part also comprises a base (15), and the lower end thread of the upright post (8) is installed on the base (15) and then locked by a locking nut A (16).

8. The measurement device for rapidly detecting the diameter value and the radial run-out value of the small-sized inner groove according to claim 7, wherein: the clamping part comprises a three-jaw chuck (4), the three-jaw chuck (4) clamps the workpiece to be measured (5) and can rotate.