CN212512949U

CN212512949U - Precision clamp for measuring shaft parts

Info

Publication number: CN212512949U
Application number: CN202021594445.4U
Authority: CN
Inventors: 李巧; 侯红玲
Original assignee: Shaanxi University of Technology
Current assignee: Shaanxi University of Technology
Priority date: 2020-08-04
Filing date: 2020-08-04
Publication date: 2021-02-09
Anticipated expiration: 2030-08-04

Abstract

The utility model relates to an axle type part measuring precision clamp comprises frame, guide arm, T type slider, hand wheel, square bush, flange type nut, lead screw, V type piece, fixed plate, handle, the pincers body, slider, lead screw, a plurality of roller, cam ring, holder. The two ends of the shaft parts with different lengths are clamped by the pair of circulating planetary roller screw pairs in relative motion or opposite motion, the rotation of a flange nut is limited by adopting a linear slide block guide rod, the precision of the linear motion of a moving part is improved, high-precision positioning is realized, and then the shaft parts with different diameters are radially clamped and loosened by the fixed workbench to realize the clamping of the precision shaft parts; the device adopts a mode of simultaneously positioning in the axial direction and the radial direction, has the advantages of simple structure, high precision, accurate control and the like, is suitable for clamping in the measurement processes of the size and the like of precision shaft parts, and has higher practical value.

Description

Precision clamp for measuring shaft parts

Technical Field

The utility model belongs to the technical field of mechanical manufacturing process, concretely relates to axle type part measuring precision clamp.

Background

Along with the demand of the current market, a higher standard is provided for the precision of shaft parts, and in the measurement of the shaft parts, most of the practical conditions are still basically in the manual measurement stage due to the reasons of complex and diversified structure, large size difference, strong three-dimensional property and the like of the shaft parts.

At the measurement stage of high accuracy axle type part, current axle type part anchor clamps are to needs through the fixed plate of dismouting repeatedly, to the axle type part of different diameters and length, adaptability is poor, and the axle type part of different specifications produces easily not hard up and adjusts inconveniently when carrying out the centre gripping fixed, has increased the measuring error of axle type part.

By combining the defects, the precision clamp for measuring the shaft parts is provided, and high-precision positioning is realized by simultaneously positioning in the axial direction and the radial direction, so that the measurement error is reduced, and clamping in the measurement processes of the size and the like of the precision shaft parts is realized.

SUMMERY OF THE UTILITY MODEL

The utility model adopts the technical scheme as follows:

a precision clamp for measuring shaft parts comprises two groups of moving parts, two groups of fixed workbenches and a rack 1, wherein the rotating directions of the two groups of moving parts are opposite, the axes of the two groups of moving parts are coaxial and are horizontally arranged, and a main screw 7 and a guide rod 2 are arranged on the rack 1 in parallel; the two groups of fixed workbenches are respectively and fixedly arranged on the upper part of the square bush 5 of the moving part and move along with the moving part, and the clamping direction is vertical to the moving direction of the moving part;

the moving part comprises a circulating type planetary roller screw pair and a linear sliding block guide rod; the circulating type planetary roller screw pair comprises a flange type nut 6, a main screw 7, a plurality of rollers 14, a cam ring 15 and a retainer 16; the retainer 16 enables a plurality of rollers 14 to be uniformly distributed on the inner hole of the flange type nut 6 and the outer side of the main screw rod 7 in a circumferential shape; the thread turning directions of the left section and the right section of the main screw 7 are opposite, and the main screw is respectively and coaxially connected with the matched flange type nut 6; the cam ring 15 is fixedly connected with the flange type nut 6; the retainer 16 is coaxially connected with the main screw 7; the end part of the main lead screw 7 is fixedly connected with the hand wheel 4; the main lead screw 7 is connected with the frame 1 through a bearing; the flange type nut 6 is fixedly connected with the square bush 5;

the linear sliding block guide rod comprises a T-shaped sliding block 3 and a guide rod 2; the T-shaped sliding block 3 is provided with a through hole which is connected with the guide rod 2; the guide rod 2 is matched with the frame 1; the upper part of the T-shaped sliding block 3 is fixedly connected with the lower part of the square bush 5;

the fixed workbench comprises a V-shaped block 8, a fixed plate 9, a handle 10, a clamp body 11, a slide block 12 and a screw rod 13; the clamp body 11 is fixedly connected with the upper part of the square bush 5; the fixed plate 9 is fixedly connected with the slide block 12; the screw rod 13 is in threaded connection with the fixing plate 9, and the V-shaped block 8 is fixedly connected with the clamp body 11.

The utility model has the advantages that: the circulating planetary roller screw pair is mainly used in high-precision positioning occasions, the minimum lead can be made to be 0.3mm, a pair of circulating planetary roller screw pairs do relative motion to clamp two ends of shaft parts with different lengths, a linear slide block guide rod is adopted to limit the rotation of a flange plate nut, the precision of the linear motion of a moving part is improved, high-precision positioning is realized, then a handle is used for rotating the screw, the screw drives a fixing plate to move, and the shaft parts with different diameters are radially clamped and loosened through a fixing workbench to clamp and clamp the precision shaft parts; the device adopts a mode of simultaneously positioning in the axial direction and the radial direction, has the advantages of simple structure, high precision, accurate control and the like, is suitable for clamping in the measurement processes of the size and the like of precision shaft parts, and has higher practical value.

Drawings

Fig. 1 is a general structural view of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a sectional view a-a in fig. 2.

Detailed Description

The following describes an implementation of the present invention with reference to the drawings.

Referring to fig. 1, 2 and 3, a precision clamp for measuring shaft parts comprises two groups of moving parts, two groups of fixed workbenches and a frame 1, wherein the rotating directions of the two groups of moving parts are opposite, the axes of the two groups of moving parts are coaxial and are horizontally arranged, and a main screw 7 and a guide rod 2 are arranged on the frame 1 in parallel; the two groups of fixed workbenches are respectively and fixedly arranged on the upper part of the square bush 5 of the moving part and move along with the moving part, and the clamping direction is vertical to the moving direction of the moving part;

The working process of the utility model is as follows:

a precision clamp for measuring shaft parts drives a main screw 7 to rotate through a hand wheel 4, a plurality of rollers 14 meshed with the main screw 7 convert the rotation motion of the main screw 7 into the linear motion of a flange type nut 6 through planetary motion, and the flange type nut 6 is driven to do relative motion or opposite motion along the axial direction due to the fact that the screwing directions of the left and right sections of threads of the main screw 7 are opposite;

when the hand wheel 4 rotates forwards, the nut 6 moves relatively along the main lead screw 7 to clamp the shaft parts with different lengths axially; a handle 10 is used for driving a screw rod 13, the screw rod 13 is used for driving a fixing plate 9 to move downwards, and shaft parts with different diameters are radially clamped;

when the hand wheel 4 rotates reversely, the nut 6 moves reversely along the main screw 7 to axially loosen the shaft parts with different lengths. The handle 10 is used for driving the screw rod 13, and the screw rod 13 is used for driving the fixing plate 9 to move upwards, so that shaft parts with different diameters can be radially unloaded.

Claims

1. The utility model provides an axle type part measuring precision clamp which characterized in that: the device comprises two groups of moving parts, two groups of fixed workbenches and a rack (1), wherein the rotating directions of the two groups of moving parts are opposite, the axes of the two groups of moving parts are coaxial and are horizontally arranged, and a main screw rod (7) and a guide rod (2) are arranged on the rack (1) in parallel; the two groups of fixed working tables are respectively and fixedly arranged on the upper part of a square bushing (5) of the moving part and move along with the moving part, and the clamping direction is vertical to the moving direction of the moving part;

the moving part comprises a circulating type planetary roller screw pair and a linear sliding block guide rod; the circulating type planetary roller screw pair comprises a flange type nut (6), a main screw (7), a plurality of rollers (14), a cam ring (15) and a retainer (16); the retainer (16) enables a plurality of rollers (14) to be uniformly distributed on the inner hole of the flange type nut (6) and the outer side of the main screw rod (7) in a circumferential shape; the screw thread turning directions of the left section and the right section of the main screw rod (7) are opposite, and the main screw rod and the right section of the main screw rod are respectively and coaxially connected with the matched flange type nut (6); the cam ring (15) is fixedly connected with the flange type nut (6); the retainer (16) is coaxially connected with the main lead screw (7); the end part of the main lead screw (7) is fixedly connected with the hand wheel (4); the main lead screw (7) is connected with the frame (1) through a bearing; the flange type nut (6) is fixedly connected with the square bushing (5);

the linear sliding block guide rod comprises a T-shaped sliding block (3) and a guide rod (2); the T-shaped sliding block (3) is provided with a through hole which is connected with the guide rod (2); the guide rod (2) is matched with the frame (1); the upper part of the T-shaped sliding block (3) is fixedly connected with the lower part of the square bushing (5).

2. The precision clamp for measuring the shaft parts according to claim 1, wherein: the fixed workbench comprises a V-shaped block (8), a fixed plate (9), a handle (10), a clamp body (11), a slide block (12) and a screw rod (13); the clamp body (11) is fixedly connected with the upper part of the square bush (5); the fixed plate (9) is fixedly connected with the slide block (12); the screw rod (13) is connected with the fixed plate (9) through threads, and the V-shaped block (8) is fixedly connected with the clamp body (11).