Coaxiality detection equipment

Abstract

According to the coaxiality detection equipment, a bottom plate provides a supporting plate and serves as a guide rail, a sliding plate carries a product to move axially, a bearing is arranged on a supporting seat, and the supporting seat serves as a product support and enables the product to rotate around the axis at the same time. According to the invention, coaxiality detection of the excircle surface, the end surface, the inner conical surface and the like of a product within a certain diameter and length range is completed; the problem of axial movement during workpiece detection is effectively solved; adjustment can be carried out according to the diameter of a workpiece, and the workpiece is axially limited and does not move all the time; for a workpiece with a central long shaft, interference can be avoided while the workpiece is axially limited and does not move all the time; the device is portable, easy to adjust and flexible in measurement mode.

Description

Technical Field

[0001] The invention relates to the field of detection equipment, in particular to a coaxiality detection equipment. Background Art

[0002] Coaxiality is generally divided into hole coaxiality and shaft coaxiality. For shaft coaxiality, the first thing that comes to mind is to use a three-coordinate measuring machine for measurement. However, such instruments are expensive and have high maintenance costs. During the measurement process, multiple cross sections need to be measured to determine the common axis, which makes the measurement efficiency low. In addition, they have high requirements for the measurement environment and are difficult to be widely used in more fields. Other existing specialized coaxiality measurement equipment has problems such as lack of portability, inflexible adjustment, and axial movement of the measured workpiece. For equipment that can limit axial movement, it has great limitations because it is not compatible with workpieces of different calibers or there is interference when measuring workpieces with a central long axis. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a coaxiality detection device.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A novel coaxiality detection device comprises a base plate (1), a sliding plate (2) and a support seat (8), wherein the base plate (1) provides a support plate and serves as a guide rail, the sliding plate (2) carries the product to move axially, and the support seat (8) is provided with a bearing (4) and serves as a product support and simultaneously enables the product to rotate around an axis.

[0006] The sliding plate (2) is provided with three grooves which are parallel to each other, wherein the grooves located on both sides are step grooves.

[0007] The bolt (6) moves axially in the step groove on the sliding plate (2) for positioning.

[0008] The tail end stop block (20) is located at one end of the bottom plate (1) and is used to limit the sliding plate (2).

[0009] The locking tail end stopper (20) is provided with a knurled screw (21) to limit the position and prevent the workpiece from slipping out.

[0010] The top slider (12) is located at the other end of the bottom plate (1) and slides axially on the guide rail to adjust the axial end face limit distance. The top support (15) is located on the side of the top slider (12). The bolt (6) moves laterally in the T-slot of the top slider (12) to avoid interference with the center of the long axis workpiece.

[0011] The top support rod (17) is fixed on the top support (15) by threads as the support shaft of the positioning bracket (18). The positioning bracket (18) has a bearing and can rotate freely around the top support rod (17) and move up and down to adjust the position of the positioning bearing (19). The top support rod (17) is locked by a hexagonal knob head bolt (16). A dial indicator is used to be adsorbed on the bottom plate (1) with a magnetic universal meter frame for measurement.

[0012] The beneficial effects of the present invention are:

[0013] 1) Complete the coaxiality detection of the outer cylindrical surface, end surface, inner conical surface, etc. of the product within a certain diameter and length range (adjustable according to the product size);

[0014] 2) Effectively solve the problem of axial movement during workpiece inspection;

[0015] 3) It can be adjusted according to the diameter of the workpiece to always ensure that the axial position of the workpiece does not move;

[0016] 4) For workpieces with a central long axis, it can always meet the axial limit without movement while avoiding interference;

[0017] 5) The equipment is portable, easy to adjust and has flexible measurement methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the coaxiality detection equipment structure.

[0019] Figure 2 A schematic diagram of the positioning bracket.

[0020] Figure 3 Schematic diagram of the detection method using a new type of coaxiality equipment for a certain type of product.

[0021] Among them, 1-base plate, 2-sliding plate, 3-knurled high head screw, 4-bearing a, 5-pin, 6-bolt, 7-pin, 8-support seat, 9-fastening pin, 10-bearing b, 11-inlay, 12-top slider, 13-hexagon socket screw, 14-T-nut, 15-top support, 16-hexagonal knob head bolt, 17-top support rod, 18-positioning bracket, 19-positioning bearing c, 20-tail end stop block, 21-knurled screw. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0023] A coaxiality detection device, such as Figure 1As shown, it comprises a base plate (1), a sliding plate (2), a support seat (8) and a top slider (12), wherein the base plate (1) provides a support plate and serves as a guide rail, the sliding plate (2) carries the product for axial movement, and the support seat (8) is provided with a bearing and serves as a product support while allowing the product to rotate around the axis.

[0024] The bolt (6) is axially moved and positioned in the step groove on the sliding plate (2); the tail end stopper (20) is located at one end of the bottom plate (1) to limit the sliding plate (2); the top slider (12) is located at the other end of the bottom plate (1) and slides axially on the guide rail to adjust the axial end face limit distance; the top support (15) is located on the top slider (12); the bolt (6) moves laterally in the T-slot of the top slider (12) to avoid interference with the center of the long axis workpiece; the top support rod (17) is fixed on the top support rod (15) by threads as the support shaft of the positioning bracket (18); the positioning bracket (18) is provided with a bearing, which is freely rotated around the top support rod (17) and moves up and down to adjust the position of the positioning bearing (19); the hexagonal knob head bolt (16) is used to lock around the top support rod (17); and a dial indicator is used to cooperate with a magnetic universal meter frame to be adsorbed on the bottom plate (1) for measurement.

[0025] When in use, the bottom plate (1) is placed horizontally on the ground or a workbench, the distance between the support seats (8) is adjusted according to the size of the workpiece, the bolt (6) is moved horizontally in the T-slot, and the bolt (6) is locked when the position is on the workpiece reference surface, the workpiece is placed on the bearing (10), and the knurled screw (21) on the tail end stop block (20) is locked to limit the workpiece from sliding out, the top slider (12) is adjusted to the workpiece close to the measurement position, and the sliding plate (2) is pushed to make the end face of the workpiece close to the bearing (19), and then the knurled high head screw (3) is tightened to support the insert strip (11), thereby locking the top slider (12) and the sliding plate (2), and checking whether the workpiece has central axis interference and adjusting the top support (15), if there is no interference, the top support is adjusted. The seat (15) is located in the middle position of the top slider (12). If there is interference, it is moved horizontally to make room in the middle to avoid interference. Then, the top support rod (17) is screwed onto the top support rod (15) by locking it with the hexagon socket screw (13). The position of the positioning bearing (19) is adjusted according to the workpiece diameter and the interference of the center axis. The operation method is that the positioning bracket (18) moves up and down on the top support rod (17) and rotates freely. After the positioning bearing (19) is pressed against the positioning surface of the end face of the workpiece, the hexagonal knob head bolt (16) is tightened to lock the positioning bracket (18). The end face of the workpiece is pressed against the magnetic universal meter seat with a dial indicator and sucked at a suitable position on the bottom plate (1). After adjusting the probe, it is locked and the workpiece is rotated to complete the measurement.

[0026] The key to realizing the function of the present invention is the adjustment of the positioning bracket (18), such as Figure 2The figure shows a schematic diagram of a positioning bracket, which is positioned by using a positioning bearing to lean against the positioning surface of the workpiece and rotate with the workpiece. The rear end can freely rotate around the top support rod (17) and move up and down to adjust the position.

[0027] A certain type of 122-caliber rocket engine needs to measure the coaxiality of the inner cone surface. The present invention solves this problem. Figure 3 The figure shows a schematic diagram of a method for detecting a certain type of 122-caliber rocket engine using a new type of coaxiality equipment.

Claims

1. A coaxiality detection device, comprising a base plate (1), a sliding plate (2) and a support seat (8), characterized in that: The coaxiality detection device comprises a bottom plate (1) which provides a support plate and serves as a guide rail, a sliding plate (2) which carries the product to move axially, and a bearing (4) which serves as a product support and enables the product to rotate around the axis. The sliding plate (2) is provided with three grooves parallel to each other, wherein the grooves located on both sides are step grooves; The bolt (6) moves axially in the step groove on the sliding plate (2) for positioning; The tail end stopper (20) is located at one end of the bottom plate (1) and is used to limit the position of the sliding plate (2); The locking tail end stopper (20) is provided with a knurled screw (21) for limiting the position and preventing the workpiece from slipping out; The top slider (12) is located at the other end of the bottom plate (1), and slides axially on the guide rail to adjust the axial end face limit distance. The top support (15) is located on the side of the top slider (12), and the bolt (6) moves laterally in the T-slot of the top slider (12) to avoid interference with the center of the long axis workpiece. The top support rod (17) is fixed on the top support (15) by threads as the support shaft of the positioning bracket (18). The positioning bracket (18) has a bearing and can rotate freely around the top support rod (17) and move up and down to adjust the position of the positioning bearing (19). The top support rod (17) is locked by a hexagonal knob head bolt (16). A dial indicator is used to be adsorbed on the bottom plate (1) with a magnetic universal meter frame for measurement.

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