Concentricity detection device

Abstract

The utility model discloses a concentricity detection device, belongs to the technical field of concentricity detection, and solves the problem that the surface of a gear blank is easily scratched due to the fact that a moving plate is in contact with the surface of the gear blank to limit the gear blank on a detection plate when the gear blank rotates, and the surface of the gear blank is in contact with the moving plate in the prior art. The detection assembly comprises a stepping motor fixedly installed in the middle of the top face of the top plate, the output end of the stepping motor is fixedly connected with a connecting rod, a U-shaped rod is fixedly installed at the bottom end of the connecting rod, an infrared distance meter is fixedly installed at the bottom end of the U-shaped rod, and the stepping motor drives the connecting rod and the U-shaped rod to rotate. And then the infrared distance meter is driven to rotate clockwise along the side face of the cylindrical workpiece, the distance between the infrared distance meter and the cylindrical workpiece can be measured, whether the workpiece is qualified or not is judged according to the change of measurement data, the cylindrical workpiece does not need to be rotated in the measurement process, and the situation that the cylindrical workpiece is scratched is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of concentricity detection, in particular to a concentricity detection device. Background Art

[0002] After the cylindrical workpiece is produced, it needs to be tested for concentricity. Concentricity is an important indicator for evaluating whether the cylindrical workpiece is qualified. Concentricity directly affects the service life and performance stability of the cylindrical workpiece.

[0003] After searching, the application with patent number CN202122939561.6 discloses a concentricity detection device, including a detection platform, a support leg is fixedly connected to the bottom of the detection platform, a mounting plate is fixedly connected to one side of the support leg, a motor is fixedly connected to the upper surface of the mounting plate, and a rotating shaft is fixedly connected to the output end of the motor;

[0004] Although the concentricity detection device drives the detection plate to rotate through the motor, and then drives the gear blank on its top surface to rotate, and uses a dial indicator to measure the difference of the gear blank, and then determines whether the concentricity of the gear blank is qualified, the concentricity detection device limits the gear blank on the detection plate by the contact between the moving plate and the surface of the gear blank. When the gear blank rotates, its surface contacts the moving plate, which can easily cause scratches on the surface of the gear blank.

[0005] Therefore, we proposed a concentricity detection device. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a concentricity detection device which solves the problem that the prior device limits the tooth blank on a detection plate by contacting the surface of the tooth blank with a movable plate, and when the tooth blank rotates, its surface contacts the movable plate, which easily causes scratches on the surface of the tooth blank.

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a concentricity detection device, comprising a placement plate, a top plate is arranged above the placement plate;

[0008] The top surface of the placement plate is provided with a fixing component, and the top plate is provided with a detection component;

[0009] The detection component includes a stepper motor fixedly installed in the middle of the top surface of the top plate, the output end of the stepper motor is fixedly connected to a connecting rod, the bottom end of the connecting rod is fixedly installed with a U-shaped rod, and the bottom end of the U-shaped rod is fixedly installed with an infrared rangefinder.

[0010] Preferably, a first electric telescopic rod is fixedly installed at the four corners of the top surface of the placement plate, and the output end of the first electric telescopic rod is fixedly installed on the bottom surface of the top plate, wherein the top plate and the detection assembly can be driven up and down by the first electric telescopic rod, thereby adjusting the position of the infrared rangefinder and changing its measuring height.

[0011] Preferably, a placement groove is provided in the middle of the top surface of the placement plate, and scale grooves are provided on the top surface of the placement plate which are symmetrically distributed on both sides of the placement groove, so that a cylindrical workpiece can be placed inside the placement groove, and the diameter of the cylindrical workpiece can be measured through the scale grooves.

[0012] Preferably, the fixing assembly includes fixing blocks fixedly mounted on both sides of the top surface of the placement plate, a second electric telescopic rod is fixedly mounted on the side of the fixing block, an output end of the second electric telescopic rod passes through the side wall of the fixing block and is fixedly mounted with an arc plate, wherein the arc plate can be pushed by the second electric telescopic rod to clamp and fix the cylindrical workpiece placed inside the placement groove.

[0013] Preferably, the bottom surface of the arc plate is fitted with the top surface of the placement plate, and L-shaped plates are fixedly installed at both ends of the arc plate, and the side of the L-shaped plate close to the fixed block is flush with the middle of the arc surface of the arc plate, and the L-shaped plate is located above the scale groove, wherein, when the second electric telescopic rod pushes the arc plate to move along the top surface of the placement plate, the bottom surface of the L-shaped plate will overlap with the scale groove, and when the arc plate contacts the cylindrical workpiece, the diameter of the cylindrical workpiece can be measured by reading the number of scale grooves located on the inner side of the L-shaped plate.

[0014] The utility model provides a concentricity detection device, which has the following beneficial effects:

[0015] 1. The concentricity detection device measures the distance between the infrared rangefinder and the cylindrical workpiece, and then drives the connecting rod and the U-shaped rod to rotate by a stepping motor, and then drives the infrared rangefinder to rotate 45° clockwise along the side of the cylindrical workpiece, and then measures the distance between the infrared rangefinder and the cylindrical workpiece again. The measurement is performed 4 times in the above manner, and whether the concentricity of the cylinder is qualified is judged according to the changes in the 4 measurement data. At the same time, the height of the detection component can be adjusted by the first electric telescopic rod, and then the concentricity of the cylindrical workpiece at different heights is detected, thereby achieving the purpose of improving the accuracy of the measurement result. In addition, the cylindrical workpiece does not need to be rotated during the measurement process, thereby avoiding the occurrence of scratches on the cylindrical workpiece. The existing device solves the problem that the movable plate contacts the surface of the tooth blank to limit it on the detection plate, and when the tooth blank rotates, its surface contacts the movable plate, which easily causes scratches on the surface of the tooth blank.

[0016] 2. The concentricity detection device clamps and fixes the cylindrical workpiece by pushing the arc plate through the second electric telescopic rod. Since the side of the L-shaped plate close to the fixed block is flush with the middle of the arc surface of the arc plate, the L-shaped plate is located above the scale groove. When the arc plate contacts the cylindrical workpiece, the diameter of the cylindrical workpiece can be measured by reading the number of scale grooves located on the inner side of the L-shaped plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the placement plate structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the fixing assembly of the utility model;

[0020] Figure 4 This is a schematic diagram of the detection component structure of the utility model.

[0021] In the figure: 1. placement plate; 11. placement slot; 12. scale slot; 2. fixing assembly; 21. fixing block; 22. second electric telescopic rod; 23. arc plate; 24. L-shaped plate; 3. first electric telescopic rod; 4. top plate; 5. detection assembly; 51. stepping motor; 52. connecting rod; 53. U-shaped rod; 54. infrared rangefinder. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1:

[0024] like Figure 1-4As shown: it includes a placement plate 1, a top plate 4 is arranged above the placement plate 1, a fixing component 2 is arranged on the top surface of the placement plate 1, a detection component 5 is arranged on the top plate 4, the detection component 5 includes a stepper motor 51 fixedly installed in the middle of the top surface of the top plate 4, the output end of the stepper motor 51 is fixedly connected to a connecting rod 52, a U-shaped rod 53 is fixedly installed at the bottom end of the connecting rod 52, an infrared rangefinder 54 is fixedly installed at the bottom end of the U-shaped rod 53, and a first electric telescopic rod 3 is fixedly installed at the four corners of the top surface of the placement plate 1, the output end of the first electric telescopic rod 3 is fixedly installed on the bottom surface of the top plate 4, and the distance between it and the cylindrical workpiece is measured by the infrared rangefinder 54 , then the connecting rod 52 and the U-shaped rod 53 are driven to rotate by the stepping motor 51, and then the infrared rangefinder 54 is driven to rotate 45° clockwise along the side of the cylindrical workpiece, and the distance between the infrared rangefinder 54 and the cylindrical workpiece is measured again, and the measurement is performed 4 times in the above manner, and the concentricity of the cylinder is judged to be qualified according to the changes in the 4 measurement data. At the same time, the height of the detection component 5 can be adjusted by the first electric telescopic rod 3, and then the concentricity of the cylindrical workpiece at different heights is detected, thereby achieving the purpose of improving the accuracy of the measurement result, and the cylindrical workpiece does not need to be rotated during the measurement process, thereby avoiding the occurrence of scratches on the cylindrical workpiece;

[0025] Embodiment 2:

[0026] like Figure 1-3 As shown: a placement groove 11 is provided in the middle of the top surface of the placement plate 1, and scale grooves 12 are symmetrically distributed on both sides of the placement groove 11 on the top surface of the placement plate 1. The fixing assembly 2 includes a fixing block 21 fixedly installed on both sides of the top surface of the placement plate 1, and a second electric telescopic rod 22 is fixedly installed on the side of the fixing block 21. The output end of the second electric telescopic rod 22 passes through the side wall of the fixing block 21 and is fixedly installed with an arc plate 23. The bottom surface of the arc plate 23 is in contact with the top surface of the placement plate 1, and L-shaped plates 24 are fixedly installed at both ends of the arc plate 23. The side of the plate 24 close to the fixed block 21 is flush with the middle of the arc surface of the arc plate 23, and the L-shaped plate 24 is located above the scale groove 12. The arc plate 23 is pushed by the second electric telescopic rod 22 to clamp and fix the cylindrical workpiece. Since the side of the L-shaped plate 24 close to the fixed block 21 is flush with the middle of the arc surface of the arc plate 23, the L-shaped plate 24 is located above the scale groove 12, when the arc plate 23 contacts the cylindrical workpiece, the diameter of the cylindrical workpiece can be measured by reading the number of scale grooves 12 located on the inner side of the L-shaped plate 24.

[0027] Working principle and use process of the utility model: When using the concentricity detection device, the cylindrical workpiece is prevented from being placed on the bottom surface of the groove 11, and then the second electric telescopic rod 22 is started to push the arc plate 23 to clamp and fix the cylindrical workpiece, and the diameter of the cylindrical workpiece can be measured by the number of scale grooves 12 located between the L-shaped plates 24, and then the first electric telescopic rod 3 is started to drive the top plate 4 and the detection component 5 to move until the infrared rangefinder 54 is located on both sides of the cylindrical workpiece, and the infrared rangefinder 54 can be started to measure its The distance between the infrared rangefinder 54 and the cylindrical workpiece is measured, and the connecting rod 52 and the U-shaped rod 53 are then driven to rotate by the stepping motor 51, and then the infrared rangefinder 54 is driven to rotate 45° clockwise along the side of the cylindrical workpiece, and the distance between the infrared rangefinder 54 and the cylindrical workpiece is measured again. The above method is measured four times, and the concentricity of the cylinder is judged to be qualified according to the changes in the four measurement data. At the same time, the height of the detection component 5 can be adjusted by the first electric telescopic rod 3, and then the concentricity of the cylindrical workpiece at different heights can be detected.

[0028] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A concentricity detection device, comprising a placement plate (1), wherein a top plate (4) is arranged above the placement plate (1); Features: The top surface of the placement plate (1) is provided with a fixing component (2), and the top plate (4) is provided with a detection component (5); The detection assembly (5) comprises a stepper motor (51) fixedly mounted on the middle of the top surface of the top plate (4); the output end of the stepper motor (51) is fixedly connected to a connecting rod (52); the bottom end of the connecting rod (52) is fixedly mounted with a U-shaped rod (53); and the bottom end of the U-shaped rod (53) is fixedly mounted with an infrared rangefinder (54).

2. A concentricity detection device according to claim 1, characterized in that: First electric telescopic rods (3) are fixedly mounted at the four corners of the top surface of the placement plate (1), and the output end of the first electric telescopic rod (3) is fixedly mounted on the bottom surface of the top plate (4).

3. A concentricity detection device according to claim 1, characterized in that: A placement groove (11) is provided in the middle of the top surface of the placement plate (1), and scale grooves (12) are provided on the top surface of the placement plate (1) and are symmetrically distributed on both sides of the placement groove (11).

4. A concentricity detection device according to claim 1, characterized in that: The fixing assembly (2) comprises fixing blocks (21) fixedly mounted on both sides of the top surface of the placement plate (1); a second electric telescopic rod (22) is fixedly mounted on the side of the fixing block (21); and an arc-shaped plate (23) is fixedly mounted on the output end of the second electric telescopic rod (22) passing through the side wall of the fixing block (21).

5. A concentricity detection device according to claim 4, characterized in that: The bottom surface of the arc-shaped plate (23) is in contact with the top surface of the placement plate (1), and L-shaped plates (24) are fixedly mounted at both ends of the arc-shaped plate (23). The side surface of the L-shaped plate (24) close to the fixed block (21) is flush with the middle of the arc surface of the arc-shaped plate (23), and the L-shaped plate (24) is located above the scale groove (12).

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