A detection tool for disc-shaped workpieces with center holes

Abstract

The present invention discloses a detection tool for a disc-shaped workpiece with a center hole, which comprises a first tray with a first through hole, a second tray with a second through hole, a height column, a first cylinder, a second cylinder, a third cylinder and a cone with a third through hole, wherein the first tray is located above the second tray, a height column is arranged between the two trays, the first cylinder is rotatably installed in the second cylinder, the upper end of the first cylinder is arranged in the second through hole, an end cover is arranged at the lower end of the first cylinder, the third cylinder is sleeved in the first cylinder, a pressure spring is arranged between the third cylinder and the end cover, the upper end of the third cylinder is arranged in the third through hole, the cone is arranged in the first through hole, and the lower end of the cone is provided with a radial first flange abutting against the first tray. The purpose of the present invention is to provide a detection tool that is simple and convenient to operate, has a wide range of applications, and can detect different types of disc-shaped workpieces with center holes.

Description

Technical Field

[0001] The invention relates to the technical field of workpiece detection, in particular to a detection tool for a disc-shaped workpiece with a center hole. Background Art

[0002] Disc-shaped workpieces with center holes (i.e., workpieces with center holes and outer circles that are coaxial), the roundness and coaxiality of these workpieces have a great influence on the performance of the product. At present, the inspection and operation of disc-shaped workpieces with center holes is relatively complicated. Some inspection methods can only inspect a single workpiece and the inspection efficiency is low. The common way to inspect workpieces is to clamp the workpieces on a lathe and use a magnetic table base to check the coaxiality and roundness of these workpieces. However, due to the large number of these workpieces, inspection on a lathe is time-consuming and labor-intensive. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a detection tool which is simple and convenient to operate, has a wide range of applications and can detect different types of disc-shaped workpieces with center holes.

[0004] The present invention is a detection tool for a disc-shaped workpiece with a center hole, comprising a first tray with a first through hole, a second tray with a second through hole, equal-height columns, a first cylinder, a second cylinder, a third cylinder and a cone with a third through hole, the first tray is located above the second tray, more than three of the equal-height columns are fixedly arranged between the first tray and the second tray, the first cylinder is rotatably installed in the cylinder cavity of the second cylinder, the upper end of the first cylinder extends upward from the cylinder cavity of the second cylinder and is fixedly arranged in the second through hole, an end cover is fixedly arranged at the lower end of the first cylinder, the third cylinder is sleeved in the cylinder cavity of the first cylinder, a pressure spring is arranged between the lower end of the third cylinder and the end cover, the upper end of the third cylinder extends from the cylinder cavity of the first cylinder and is fixedly arranged in the third through hole, the cone is arranged in the first through hole, and a radial first flange is fixedly arranged at the lower end of the cone, the first flange is located below the first tray and abuts against the first tray.

[0005] The present invention is a detection tool for a disc-shaped workpiece with a center hole, and also includes an adjusting screw and a spring pressure plate. The spring pressure plate is arranged between the pressure spring and the end cover, the lower end of the pressure spring abuts against the spring pressure plate, and a fourth through hole with an internal thread is provided on the end cover. The upper end of the adjusting screw is threadedly connected to the fourth through hole and then extends into the barrel cavity of the first barrel, and the upper end of the adjusting screw abuts against the spring pressure plate.

[0006] The invention is a detection tool for a disc-shaped workpiece with a central hole, wherein an annular mounting seat is fixedly arranged on the outer cylinder wall at the lower end of the second cylinder.

[0007] The present invention is a detection tool for a disc-shaped workpiece with a center hole, wherein the lower end of the spring pressure plate is provided with a hemispherical groove, a ball is clamped in the hemispherical groove, and the ball abuts against the upper end of the adjusting screw after passing through the spring pressure plate.

[0008] The present invention is a detection tool for a disc-shaped workpiece with a center hole, wherein the first cylinder is rotatably installed in the cylinder cavity of the second cylinder through a first bearing and a second bearing, the first bearing is located at the upper end of the inner cylinder wall of the second cylinder, an annular baffle is arranged above the first bearing, the annular baffle is fixedly connected to the outer cylinder wall of the first cylinder, the annular baffle abuts against the inner ring of the first bearing, an annular sealing plate is arranged above the first bearing, the annular sealing plate abuts against the outer ring of the first bearing, the annular sealing plate is fixedly connected to the second cylinder, the second bearing is located at the lower end of the inner cylinder wall of the second cylinder, an annular retaining ring is arranged below the second bearing, the annular retaining ring abuts against the outer ring of the second bearing, the annular retaining ring is fixedly connected to the second cylinder, the annular retaining ring is located between the inner hole wall of the mounting seat and the end cover, and the end cover is located below the second bearing and abuts against the inner ring of the second bearing.

[0009] The present invention is a detection tool for a disc-shaped workpiece with a center hole, wherein a radial second flange is fixedly arranged in the first through hole of the first tray, and the first flange is located below the second flange and abuts against the second flange.

[0010] The present invention is a detection tool for a disk-shaped workpiece with a central hole, wherein the number of the equal-height columns is three.

[0011] The present invention is a detection tool for a disk-shaped workpiece with a central hole, wherein the lower part of the interior of the cone is a cavity structure, and the third through hole is located above the interior of the cone.

[0012] The invention is a detection tool for a disc-shaped workpiece with a central hole, wherein the second tray is provided with an arc-shaped through hole.

[0013] The present invention is a detection tool for a disc-shaped workpiece with a center hole, wherein a plurality of first ribs are arranged on the lower surface of the second tray, the plurality of first ribs are evenly spaced along the circumference of the first cylinder, and the plurality of first ribs are fixedly connected to the first cylinder, and a plurality of second ribs are arranged on the upper surface of the mounting seat, the plurality of second ribs are evenly spaced along the circumference of the second cylinder, and the plurality of second ribs are fixedly connected to the second cylinder.

[0014] The detection tool for disc-shaped workpieces with center holes of the present invention is different from the prior art in that the cone in the present invention can cooperate with the center holes of different types of disc-shaped workpieces, and can make different types of workpieces automatically remain coaxial with the center axis of the detection tool. In addition, when detecting the roundness and coaxiality of the workpiece, workpieces with different center hole diameters can use their own gravity to overcome the thrust transmitted by the pressure spring through the third cylinder and the cone to move downward, and the workpieces will eventually fall on the first tray. In this process, for workpieces with different center hole diameters, the cone will produce different up and down displacements between the first tray and the second tray. Since the first cylinder can rotate in the cylinder cavity of the second cylinder, when the detection tool rotates, the workpiece will rotate synchronously with the first cylinder through the first tray, the equal height column and the second tray. At this time, it is only necessary to place the probe of the magnetic table base on the outer circle of the workpiece and observe the dial of the magnetic table base to conveniently and quickly read the coaxiality and roundness values ​​of different types of workpieces, thereby making the detection range of the present invention wider.

[0015] The present invention will be further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front cross-sectional view of a detection tool for a disc-shaped workpiece with a center hole according to the present invention;

[0017] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0018] Figure 3 A three-dimensional diagram of a detection tool for a disc-shaped workpiece with a center hole according to the present invention;

[0019] Figure 4 This is a diagram of the use state of the detection tool of the present invention for a disc-shaped workpiece with a center hole;

[0020] Figure 5 The present invention is a diagram showing the relative positions of a cone, a first tray, equal-height columns and a second tray in a detection tool for a disc-shaped workpiece with a center hole. DETAILED DESCRIPTION

[0021] like Figure 1-Figure 5As shown, the detection tool for a disc-shaped workpiece with a center hole of the present invention comprises a first tray 1 with a first through hole 27, a second tray 2 with a second through hole 28, a height column 3, a first cylinder 4, a second cylinder 5, a third cylinder 6 and a cone 7 with a third through hole 29, the first tray 1 is located above the second tray 2, more than three height columns 3 are fixedly arranged between the first tray 1 and the second tray 2, the first cylinder 4 is rotatably installed in the cylinder cavity of the second cylinder 5, the upper end of the first cylinder 4 extends upward from the cylinder cavity of the second cylinder 5 and is fixedly arranged in the second through hole 28, and the lower end of the first cylinder 4 An end cover 8 is fixedly provided at the end, the third cylinder 6 is sleeved in the cylinder cavity of the first cylinder 4, a pressure spring 9 is provided between the lower end of the third cylinder 6 and the end cover 8, the upper end of the third cylinder 6 extends out from the cylinder cavity of the first cylinder 4 and is fixedly connected to the third through hole 29, the upper end of the third cylinder 6 and the third through hole 29 are fixedly connected by interference fit, welding, threaded connection or fastener connection, the cone 7 is arranged in the first through hole 27, the lower end of the cone 7 is provided with a radial first flange 10 by welding or integral molding, the first flange 10 is located below the first tray 1 and abuts against the first tray 1.

[0022] In the present invention, the first cylinder 4, the second cylinder 5, the third cylinder 6, the cone 7, the first tray 1 and the second tray 2 are coaxially arranged.

[0023] like Figure 1 , 2 As shown, the present embodiment also includes an adjusting screw 11 and a spring pressure plate 12. The spring pressure plate 12 is arranged between the pressure spring 9 and the end cover 8. The lower end of the pressure spring 9 abuts against the end cover 8. The end cover 8 is provided with a fourth through hole with an internal thread. The upper end of the adjusting screw 11 is threadedly connected to the fourth through hole and then extends into the barrel cavity of the first barrel 4. The upper end of the adjusting screw 11 abuts against the spring pressure plate 12. The upward thrust of the pressure spring 9 is adjusted by rotating the adjusting screw 11, so that a suitable relative force is generated between the cone 7 and the workpiece 13.

[0024] In this embodiment, an annular mounting seat 14 is fixedly provided on the outer cylinder wall of the lower end of the second cylinder 5, so as to facilitate the fixing of the detection tool.

[0025] like Figure 1 , 2 As shown, in order to reduce the friction between the adjusting screw 11 and the spring pressure plate 12, a hemispherical groove is provided at the lower end of the spring pressure plate 12, and a ball 15 is clamped in the hemispherical groove. After the ball 15 passes through the spring pressure plate 12, it abuts against the upper end of the adjusting screw 11.

[0026] like Figure 1 , 2As shown, in this embodiment, the first cylinder 4 is rotatably mounted in the cylinder cavity of the second cylinder 5 through the first bearing 16 and the second bearing 17. The first bearing 16 is located at the upper end of the inner cylinder wall of the second cylinder 5. An annular baffle 18 is arranged above the first bearing 16. The annular baffle 18 is connected to the outer cylinder wall of the first cylinder 4 by welding or integral molding. The annular baffle 18 abuts against the inner ring of the first bearing 16. An annular sealing plate 19 is arranged above the first bearing 16. The annular sealing plate 19 abuts against the outer ring of the first bearing 16. The annular sealing plate 19 is fixedly connected to the second cylinder 5. The second bearing 17 is located at the lower end of the inner cylinder wall of the second cylinder 5. An annular retaining ring 20 is arranged below the second bearing 17. The annular retaining ring 20 abuts against the outer ring of the second bearing 17. The annular retaining ring 20 is fixedly connected to the second cylinder 5. The annular retaining ring 20 is located between the inner hole wall of the mounting seat 14 and the end cover 8. The end cover 8 is located below the second bearing 17 and abuts against the inner ring of the second bearing 17. The annular baffle 18 can limit the position of the first bearing 16, the annular retaining ring 20 can limit the position of the second bearing 17, and the annular sealing plate 19 can prevent dust or debris from entering the detection tool.

[0027] like Figure 1 , 5 As shown, in order to make the structure of the detection tool more compact, a radial second flange 21 is welded or integrally formed in the first through hole 27 of the first tray 1 in this embodiment, and the first flange 10 is located below the second flange 21 and abuts against the second flange 21.

[0028] like Figure 3 As shown, in this embodiment, the number of the equal height columns 3 is three, and the three equal height columns are evenly spaced along the outer edge of the first tray or the second tray. Of course, the number of the equal height columns can also be set to be greater than three, and the equal height columns greater than three are also evenly spaced along the outer edge of the first tray or the second tray. The equal height columns can be replaced according to actual conditions. The equal height columns of different heights make the distance between the first tray and the second tray (that is, the distance of the cone moving up and down) different. The equal height columns can keep the distance between the first tray and the second tray the same, that is, make the first tray parallel to the second tray.

[0029] like Figure 1 , 3 As shown in Figure 5, in this embodiment, the lower part of the interior of the cone 7 is a cavity structure, the third through hole 29 is located above the interior of the cone 7, and the second tray 2 is provided with arc-shaped through holes 22. The number of the arc-shaped through holes 22 can be one or more. Designing the lower part of the interior of the cone 7 as a cavity structure and providing the arc-shaped through holes 22 on the second tray 2 can effectively reduce the weight of the detection tool, making the detection tool very convenient to carry and use.

[0030] like Figure 1As shown, in order to increase the stability of the detection tool, a plurality of first ribs 23 are arranged on the lower surface of the second tray 2, and the plurality of first ribs 23 are evenly spaced along the circumference of the first cylinder 4, and the plurality of first ribs 23 are fixedly connected to the first cylinder 4, and a plurality of second ribs 24 are arranged on the upper surface of the mounting seat 14, and the plurality of second ribs 24 are evenly spaced along the circumference of the second cylinder 5, and the plurality of second ribs 24 are fixedly connected to the second cylinder 5.

[0031] like Figure 3 , 4 As shown, the cone 7 in the present invention can cooperate with the center holes of different types of disc-shaped workpieces 13, and can make different types of disc-shaped workpieces 13 automatically keep coaxial with the central axis of the detection tool. In addition, when detecting the roundness and coaxiality of the workpiece 13, the workpiece 13 with different center hole diameters can use its own gravity to overcome the thrust transmitted by the pressure spring 9 through the third cylinder 6 and the cone 7 to move downward, and the workpiece 13 will eventually fall on the first tray 1. In this process, for the workpiece 13 with different center hole diameters, the cone 7 will produce different up and down displacements between the first tray 1 and the second tray 2. Since the first cylinder 4 can rotate in the cylinder cavity of the second cylinder 5, when the detection tool rotates, the workpiece 13 will rotate synchronously with the first cylinder 4 through the first tray 1, the equal height column 3 and the second tray 2. At this time, it is only necessary to place the probe of the magnetic table base 25 on the outer circle of the workpiece 13, and observe the dial of the magnetic table base 25 to conveniently and quickly read the coaxiality and roundness values ​​of different types of workpieces 13, thereby making the detection range of the present invention more extensive.

[0032] The working principle of the present invention is introduced below:

[0033] like Figure 4 As shown, combined with Figure 1-3As shown in Figure 5, when inspecting the workpiece 13, first place the inspection tool on the surface of the workbench 26 (a fifth through hole for accommodating the adjusting screw 11 is reserved on the workbench 26), and fix the mounting seat 14 to the surface of the workbench 26 with fasteners (such as bolts), and then put the disc-shaped workpiece 13 with a center hole (that is, the workpiece with the center hole and the outer circle coaxial) on the cone 7. Since the cone 7 is a variable diameter structure with a gradually increasing diameter from top to bottom, the workpiece 13 will move from top to bottom along the cone 7 until it reaches a position matching the size of its center hole and stops. At this time, the workpiece 13 will automatically remain coaxial with the central axis of the inspection tool, and then adjust the upward thrust of the pressure spring 9 by adjusting the screw 11, so that A suitable relative force is generated between the cone 7 and the workpiece 13 (that is, the workpiece 13 can fall onto the first tray 1). In this process, for the workpiece 13 with different center hole diameters, the cone 7 will produce different up and down displacements between the first tray 1 and the second tray 2. Since the first cylinder 4 can rotate in the cylinder cavity of the second cylinder 5, when the detection tool rotates, the workpiece 13 will rotate synchronously with the first cylinder 4 through the first tray 1, the equal height column 3 and the second tray 2. At this time, the probe of the magnetic base 25 is placed on the outer circle of the workpiece 13, and the coaxiality and roundness values ​​of different types of workpieces 13 can be read by observing the dial of the magnetic base 25, thereby completing the detection work.

[0034] The embodiments described above are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A detection tool for measuring the coaxiality and roundness of a disc-shaped workpiece with a center hole, characterized in that: The invention comprises a first tray with a first through hole, a second tray with a second through hole, equal-height columns, a first cylinder, a second cylinder, a third cylinder and a cone with a third through hole, the first tray being located above the second tray, more than three equal-height columns being fixedly arranged between the first tray and the second tray, the first cylinder being rotatably installed in the cylinder cavity of the second cylinder, the upper end of the first cylinder extending upward from the cylinder cavity of the second cylinder and then being fixedly arranged in the second through hole, the lower end of the first cylinder being fixedly arranged with an end cover, the third cylinder being sleeved in the cylinder cavity of the first cylinder, a pressure spring being arranged between the lower end of the third cylinder and the end cover, the upper end of the third cylinder extending from the cylinder cavity of the first cylinder and then being fixedly arranged in the third through hole, the cone being arranged in the first through hole, the lower end of the cone being fixedly arranged with a radial first flange, the first flange being located below the first tray and abutting against the first tray, and the probe of the magnetic table seat being placed on the outer circle of the workpiece.

2. The detection tool for measuring the coaxiality and roundness of a disk-shaped workpiece with a center hole according to claim 1, characterized in that: It also includes an adjusting screw and a spring pressure plate, wherein the spring pressure plate is arranged between the pressure spring and the end cover, the lower end of the pressure spring abuts against the spring pressure plate, and the end cover is provided with a fourth through hole with an internal thread, the upper end of the adjusting screw is threadedly connected to the fourth through hole and then extends into the barrel cavity of the first barrel, and the upper end of the adjusting screw abuts against the spring pressure plate.

3. The detection tool for measuring the coaxiality and roundness of a disk-shaped workpiece with a center hole according to claim 2, characterized in that: An annular mounting seat is fixedly arranged on the outer cylinder wall at the lower end of the second cylinder.

4. The detection tool for measuring the coaxiality and roundness of a disk-shaped workpiece with a center hole according to claim 3, characterized in that: A hemispherical groove is arranged at the lower end of the spring pressure plate, a ball is clamped in the hemispherical groove, and the ball is abutted against the upper end of the adjusting screw after passing through the spring pressure plate.

5. The detection tool for measuring the coaxiality and roundness of a disk-shaped workpiece with a center hole according to claim 4, characterized in that: The first cylinder is rotatably installed in the cylinder cavity of the second cylinder through a first bearing and a second bearing, the first bearing is located at the upper end of the inner cylinder wall of the second cylinder, an annular baffle is arranged above the first bearing, the annular baffle is fixedly connected to the outer cylinder wall of the first cylinder, the annular baffle abuts against the inner ring of the first bearing, an annular sealing plate is arranged above the first bearing, the annular sealing plate abuts against the outer ring of the first bearing, the annular sealing plate is fixedly connected to the second cylinder, the second bearing is located at the lower end of the inner cylinder wall of the second cylinder, an annular retaining ring is arranged below the second bearing, the annular retaining ring abuts against the outer ring of the second bearing, the annular retaining ring is fixedly connected to the second cylinder, the annular retaining ring is located between the inner hole wall of the mounting seat and the end cover, the end cover is located below the second bearing and abuts against the inner ring of the second bearing.

6. The detection tool for measuring the coaxiality and roundness of a disk-shaped workpiece with a center hole according to claim 5, characterized in that: A radial second flange is fixedly disposed in the first through hole of the first tray, and the first flange is located below the second flange and abuts against the second flange.

7. The detection tool for measuring the coaxiality and roundness of a disk-shaped workpiece with a center hole according to claim 6, characterized in that: The number of the equal-height columns is three.

8. The detection tool for measuring the coaxiality and roundness of a disk-shaped workpiece with a center hole according to claim 7, characterized in that: The lower part of the cone is a cavity structure, and the third through hole is located above the inner part of the cone.

9. The detection tool for measuring the coaxiality and roundness of a disk-shaped workpiece with a center hole according to claim 8, characterized in that: The second tray is provided with an arc-shaped through hole.

10. The detection tool for measuring the coaxiality and roundness of a disk-shaped workpiece with a center hole according to claim 9, characterized in that: A plurality of first ribs are provided on the lower surface of the second tray, and the plurality of first ribs are evenly spaced along the circumference of the first cylinder, and the plurality of first ribs are fixedly connected to the first cylinder; a plurality of second ribs are provided on the upper surface of the mounting seat, and the plurality of second ribs are evenly spaced along the circumference of the second cylinder, and the plurality of second ribs are fixedly connected to the second cylinder.

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