CN219037861U - Screw rod support accuracy uniformity verifying attachment - Google Patents

Abstract

The utility model discloses a screw rod support precision consistency checking device, and belongs to the technical field of mechanical assembly precision checking. The device comprises an end surface detecting rod, a conical surface pad, a spherical surface pad and a round nut, wherein the end surface detecting rod passes through a central inner hole of a screw rod bracket in a matched manner, and the right end surface of a stop block at the middle left side of the end surface detecting rod is tightly attached to a thrust bearing joint surface at the left side of the screw rod bracket; the right rod body of the end surface detecting rod is provided with a conical surface pad and a spherical surface pad, and the shape of an inner hole on the right side of the conical surface pad is matched with that of a convex surface on the left side of the spherical surface pad; the right side of the spherical pad is connected with a round nut in a threaded manner on the end surface rod body, and the round nut tightly props against the spherical pad and the conical surface pad, so that the conical surface pad is tightly attached to the thrust bearing joint surface on the right side of the screw rod bracket. According to the utility model, the parallelism and consistency of the lead screw support and the guide rail are detected by tightly bonding the end surface detecting rod and the thrust bearing joint surface of the lead screw support and matching with the indicator, so that the precision of the end surface thrust bearing joint surface can be effectively detected, and the grinding damage of the end surface thrust bearing is avoided.

Description

Screw rod support accuracy uniformity verifying attachment

Technical Field

The utility model relates to a screw rod support precision consistency checking device, and belongs to the technical field of mechanical assembly precision checking.

Background

The screw transmission structure on the existing vertical lathe is generally in a three-point supporting transmission mode, namely, a fixed part (moving part) is connected with a screw on the screw through a screw seat, and the moving part (fixed part) is connected with the screw through a screw bracket at two ends and a thrust bearing, an axial needle bearing, a round nut and the like at the inner end face of the bracket. The key of the three-point supporting structure of the screw is that the adjustment of the consistency precision of the center of the three-point is realized, in the past, a high-precision process hole coaxial with a mounting hole is machined on a screw bracket, and when the screw is assembled, a check sleeve and a check rod are penetrated through the process hole to check the consistency of the three-point, so that the difficulty is increased for machining, the perpendicularity of an end face thrust bearing joint surface and the center hole cannot be detected, the problem that the bearing is damaged due to the fact that the perpendicularity of the end face thrust bearing joint surface is not opposite is often caused, a large amount of reworking is caused, manpower and material resources are wasted, and the machining efficiency is affected.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides the screw support precision consistency checking device, which detects the parallelism of the screw support and the guide rail and the consistency of the precision of each support through the tight adhesion of the end surface checking rod and the thrust bearing joint surface of the screw support and the matching of the indicator, can effectively detect the precision of the end surface thrust bearing joint surface, and avoids the grinding damage of the end surface thrust bearing.

The technical scheme adopted for solving the technical problems is as follows: the device comprises an end surface detecting rod, a conical surface pad, a spherical surface pad and a round nut, wherein the end surface detecting rod passes through a central inner hole of the screw support in a matched mode, and the right end surface of a stop block at the position, which is far to the left, in the middle of the end surface detecting rod is tightly attached to a thrust bearing joint surface at the left side in the screw support; the right rod body of the end surface detecting rod is provided with a conical surface pad and a spherical surface pad, the shape of an inner hole at the right side of the conical surface pad is a conical hole surface, and the conical hole surface is contacted with the convex arc surface at the left side of the spherical surface pad; the right side of the spherical pad is connected with a round nut in a threaded manner on the end surface rod body, and the round nut tightly props against the spherical pad and the conical surface pad, so that the conical surface pad is tightly attached to the right side thrust bearing joint surface in the screw rod bracket.

The beneficial effects of the utility model are as follows: the utility model solves the technical problem that the thrust bearing is frequently damaged in the ball screw transmission mechanism, can simply and effectively correlate and adjust the precision of the end surface thrust bearing joint surface and the central hole, ensures the parallelism of the screw support and the guide rail and the consistency of the precision of each support, can avoid the damage to the end surface thrust bearing caused by the fact that the precision of the upper end surface thrust bearing joint surface of the screw support is not opposite, further improves the working efficiency, and has the advantages of simple structure, convenient operation, strong practicability and the like.

Drawings

The utility model is further described below with reference to the drawings and the detailed description.

Fig. 1 is a schematic structural view of the present utility model.

Fig. 2 is a schematic diagram of an application of the present utility model.

Fig. 3 is a side view of fig. 2.

Fig. 4 is a schematic structural view of the end surface dipstick.

Fig. 5 is a schematic view of a conical surface pad and a spherical surface pad.

Fig. 6 is a schematic view of a screw mount.

Reference numerals in the drawings:

1. the end surface inspection rod comprises an end surface inspection rod 101, a stop block, a screw rod support 2, a screw rod support 201, a thrust bearing joint surface, a conical surface pad 3, a spherical surface pad 4, a round nut 5, a round nut 6, a moving part 601, a left end surface of a screw mounting hole 602, a right end surface of the screw mounting hole 7, an indicator A,8, an indicator B,9 and a guide rail 10 fixing parts.

Detailed Description

As shown in fig. 1-6, the device for checking the precision consistency of the lead screw support comprises an end surface checking rod 1, a conical surface pad 3, a spherical surface pad 4 and a round nut 5, wherein the end surface checking rod 1 in the horizontal direction passes through the central inner hole of the lead screw support 2 in a matched mode, a stop block 101 is arranged in the middle of the end surface checking rod 1 at the position far to the left, the stop block 101 is clamped in the lead screw support 2, and the right end surface of the stop block 101 is tightly attached to a thrust bearing joint surface 201 at the left side in the lead screw support 2; the right rod body of the end face detection rod 1 is provided with a conical surface pad 3 and a spherical surface pad 4, the conical surface pad 3 and the spherical surface pad 4 are matched to penetrate through the end face rod body 1, the conical surface pad 3 is positioned at the left side of the spherical surface pad 4, and an inner conical hole at the right side of the conical surface pad 3 is contacted with a convex arc surface at the left side of the spherical surface pad 4; on the right side of the spherical pad 4, the end face rod body 1 is connected with a round nut 5 in a threaded manner, the round nut 5 tightly pushes against the spherical pad 4 and the conical surface pad 3, and the conical surface pad 3 is tightly attached to a thrust bearing joint surface 201 on the right side of the screw rod bracket.

The using method comprises the following steps:

1) The end surface detecting rod 1 penetrates through the center inner hole of the screw rod support 2 to form a screw rod support assembly, the right end surface of the stop block 101 on the end surface detecting rod 1 is tightly attached to the thrust bearing joint surface 201 on the left side in the screw rod support 2, the conical surface pad 3, the spherical surface pad 4 and the round nut 5 are arranged on the right side of the screw rod support 2, and the conical surface pad 3 is tightly attached to the thrust bearing joint surface 201 on the right side in the screw rod support 2 by screwing the round nut 5;

2) Penetrating the end surface detecting rod 1 into a screw mounting hole of the moving piece 6, tightly attaching a stop block 101 on the end surface detecting rod 1 to the left end surface 601 of the screw mounting hole, installing a right conical surface pad 3, a spherical surface pad 4 and a round nut 5, and tightly screwing the round nut 5 to tightly attach the right end surface 602 of the screw mounting hole of the conical surface pad 3;

3) The assembly of the moving part 6 is arranged on two side guide rails 9 on the top of the fixed part 10, the screw rod bracket assembly is arranged between the two side guide rails 9 at the installation position on the fixed part 10 in parallel, an indicator A7 is arranged at the bus position above the end surface detecting rod 1 in the screw nut installation hole of the moving part 6, an indicator B8 is arranged at the right bus position of the end surface detecting rod 1, the indicator A7 and the indicator B8 are moved, and the parallelism tolerance between the bus above the two ends of the detecting rod of the moving part assembly and the guide rails 9 is tested to be not more than 0.005/200mm;

4) Pushing the indicator A7 and the indicator B8 to the two ends of the two-end lead screw support check rod along the guide rail 9 respectively, adjusting the positions and the precision of the two lead screw supports 2, ensuring that the consistency tolerance between the bus above and the bus on the right side and the bus above and the bus on the right side of the nut mounting hole of the moving piece 6 is not more than 0.015mm, drilling a twisted pin hole, and fixing the two-end lead screw supports 2;

5) And the ball screw is penetrated and arranged, so that the rechecking accuracy meets the process requirements.

The end surface checking rod 1 is mainly positioned by a hole, the end surface precision is taken as a first reference, the end surface checking rod 1 is penetrated into a central hole of the screw rod support 2 when in use, the right end surface of a stop block 101 on the end surface checking rod 1 is tightly attached to a left thrust bearing bonding surface 201 in the screw rod support 2, a conical surface pad 3, a spherical surface pad 4 and a round nut 5 are arranged on the right side, the conical surface pad 3 and the spherical surface pad 4 are self-aligned by screwing the round nut 5, the end surface checking rod 2 is tightly attached to the right thrust bearing bonding surface 201 in the screw rod support 2, the right inner hole of the conical surface pad 3 is contacted with the left protruding arc surface of the spherical surface pad 4, the tight attachment of the spherical surface pad 4 to the conical surface pad 3 and the right end surface of the stop block 101 to the left thrust bearing bonding surface 201 in the screw rod support 2 can be effectively ensured, and the parallelism degree of a bus above two ends of the end surface checking rod and a right side and a guide rail reaches 0.01/300mm; during adjustment, each screw rod support 2 penetrates into the inspection device assembly respectively, and the parallelism tolerance of each screw rod support 2 and the guide rail 9 is not more than 0.01/300mm and the consistency tolerance of each screw rod support 2 and the screw nut mounting hole of the moving part 6 is not more than 0.015mm.

Claims (2)

1. The utility model provides a lead screw support precision uniformity verifying attachment which characterized in that: including terminal surface examine excellent (1), conical surface pad (3), sphere pad (4) and round nut (5), the terminal surface examines excellent (1) cooperation and passes the central hole of lead screw support (2), and the centre of terminal surface examine excellent (1) is close to laminating with left thrust bearing faying surface (201) in lead screw support (2) in the middle left side department of being equipped with dog (101), is equipped with conical surface pad (3), sphere pad (4) and round nut (5) on the right side body of terminal surface examine excellent (1) in proper order, makes conical surface pad (3) and the thrust bearing faying surface (201) on the right side in the lead screw support closely laminate through screwing round nut (5).

2. The screw support accuracy consistency check device according to claim 1, wherein: the conical surface pad (3) is positioned at the left side of the spherical surface pad (4), and an inner conical hole at the right side of the conical surface pad (3) is contacted with a convex arc surface at the left side of the spherical surface pad (4).

Images