Piston inner hole coaxiality detection device

Abstract

The utility model relates to a piston inner hole coaxiality detection device which comprises a rack and a top supporting table, a detection assembly is installed on the top supporting table, a clamping assembly is arranged at the upper end of the rack, and an extrusion assembly is arranged at the lower end of the rack. During assembly, the extrusion assembly and the clamping assembly are used together with the detection assembly. According to the utility model, the liftable top support table is arranged on the rack, the top support table is matched with the rack, the detection assembly is arranged on the top support table, the extrusion assembly and the clamping assembly are arranged on the rack, and a piston to be detected is clamped between the extrusion assembly and the clamping assembly. The detection rod is driven by the rotary motor to perform rotary test on the coaxiality of the inner hole of the to-be-detected piston, and the device has the advantages of simple operation, low manufacturing cost and convenient identification, and is high in applicability.

Description

Technical Field

[0001] The utility model relates to the field of piston detection workpieces, in particular to a piston inner hole coaxiality detection device. Background Art

[0002] In the coaxiality measurement of the piston, the common axis method is mainly used to measure the coaxiality, and this method requires clamping the piston, and then measuring the two ends of the piston separately. The traditional way is to use large mechanical equipment for operation, such as a piston inner hole coaxiality detection device with patent number CN220230483U, including a device body, and also including: a base, the base is provided with a plurality of and the upper end is fixedly connected to the lower surface of the device body; a transmission belt mechanism, the transmission belt mechanism is arranged on one side of the middle of the upper surface of the device body; a conveying roller mechanism, the conveying roller mechanism is arranged on the other side of the middle of the upper surface of the device body; a detection mechanism, the detection mechanism is arranged above one side of the upper surface of the device body, and the operation is carried out with large equipment, which occupies a large area and has high equipment cost.

[0003] To this end, the utility model provides a piston inner hole coaxiality detection device with low manufacturing cost and good use effect. Utility Model Content

[0004] The utility model aims to solve the problems in the background technology and proposes a piston inner hole coaxiality detection device.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a piston inner hole coaxiality detection device, comprising a frame, a top support platform is installed above the frame, a detection component is installed on the top support platform, a clamping component is arranged at the upper end of the frame, and an extrusion component is arranged at the lower end; during assembly, the extrusion component and the clamping component are used together with the detection component;

[0006] The extrusion assembly includes a magnetic sensor cylinder symmetrically arranged on the left and right sides of the frame, a piston rod is horizontally arranged in the center of the magnetic sensor cylinder, a clamp is arranged at the movable end of the piston rod, and the clamps on the left and right sides respectively clamp one end of the piston to be detected;

[0007] The detection assembly includes a rotating motor disposed on a top support platform, the rotating motor is connected to a rotating shaft at the top of a rotating disk, and a plurality of replaceable detection rods are detachably disposed on the rotating disk;

[0008] The clamping assembly comprises two symmetrically arranged threaded seats arranged on the top support platform, and a clamping screw rod passes horizontally through the threaded seats; during assembly, the two clamping screw rods clamp the other end of the piston to be tested.

[0009] In the above-mentioned piston inner hole coaxiality detection device, a flexible snap-on piece is provided on one side of the clamp, and the flexible snap-on piece is set as a C-shaped one-way opening. The inner side of the flexible snap-on piece that contacts the piston to be detected is elastic and can further limit one end of the piston to be detected when in use.

[0010] In the above-mentioned piston inner hole coaxiality detection device, the rotating disk is provided with a plurality of assembly holes for installing the detection rod, and the detection rod is locked on the rotating disk by a set screw, so that it can be replaced better when detecting the two ends of the piston.

[0011] In the above-mentioned piston inner hole coaxiality detection device, the clamping screw is provided with a control handle on the outward side and a clamping piece made of rubber material on the inward side. The control handle is provided to facilitate better screwing of the clamping screw, and the clamping piece is provided to reduce the wear on the piston shell.

[0012] In the above-mentioned piston inner hole coaxiality detection device, the frame is provided with a through hole and a limit hole, the limit hole is arranged above the through hole, the through hole is convenient for inserting the piston, and the limit hole is used to limit the piston for easy detection.

[0013] In the above-mentioned piston inner hole coaxiality detection device, a flexible annular gasket is installed in the limiting hole, and the annular gasket plays a limiting and buffering role.

[0014] In the above-mentioned piston inner hole coaxiality detection device, the clamp is T-shaped, and a non-slip gasket is provided on the side of the clamp facing the piston to be detected, which can increase the friction force and improve the clamping force.

[0015] In the above-mentioned piston inner hole coaxiality detection device, the top support platform is a lifting type support platform, and the lifting type support platform can be raised and lowered to match the piston to be detected with different lengths at both ends.

[0016] Compared with the existing technology, the advantages of this piston inner hole coaxiality detection device are:

[0017] The utility model arranges a liftable top support platform on a frame, utilizes the cooperation between the top support platform and the frame, arranges a detection component on the top support platform, and arranges an extrusion component and a clamping component on the frame. During use, the piston to be detected is clamped between the extrusion component and the clamping component through the cooperation between the detection component, the extrusion component and the clamping component, and then the detection rod is driven by a rotating motor in the detection component to perform a rotation test on the coaxiality of the inner hole of the piston to be detected. If there is a processing deviation in the inner hole, the piston will be misaligned or forked. The operation is simple, the production cost is low, and it is easy to identify. At the same time, the utility model can realize the replacement of the hole position of the detection rod to achieve the effect of bilateral detection, and has stronger applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 for Figure 1 The enlarged cross-sectional view of the inscribed portion A;

[0020] Figure 3 It is an enlarged schematic diagram of the detection component of the utility model in the first state;

[0021] Figure 4 It is an enlarged schematic diagram of the detection component of the utility model in the second state;

[0022] Figure 5 for Figure 3 Schematic diagram of the detection rod installed on the rotating disk;

[0023] Figure 6 for Figure 4 Schematic diagram of the detection rod installed on the rotating disk;

[0024] Figure 7 Top view of the flexible ring gasket installation.

[0025] In the figure:

[0026] 1-frame, 11-top support platform, 12-through hole, 13-limiting hole;

[0027] 2-extrusion assembly, 21-magnetic sensor cylinder, 2-piston rod, 23-clamp, 24-flexible snap-on piece;

[0028] 3-detection assembly, 31-rotating motor, 32-rotating shaft, 33-rotating disk, 34-detection rod, 35-setting screw;

[0029] 4-clamping assembly, 41-control handle, 42-threaded seat, 43-clamping screw;

[0030] 5-Flexible ring gasket;

[0031] 6- Piston to be tested. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0033] Reference Figure 1-7 An embodiment of a piston inner hole coaxiality detection device includes a frame 1, and a top support platform 11 is installed above the frame 1. In order to realize the detection of pistons of different bidirectional lengths, the top support platform 11 is a lifting support platform, which is convenient for controlling the height. It should be noted that the lifting support platform is an existing design. A detection component 3 is installed on the top support platform 11. The upper end of the frame 1 is provided with a clamping component 4, and the lower end is provided with an extrusion component 2; when assembled, the extrusion component 2 and the clamping component 4 is used together with the detection component 3, wherein the detection component 3 is used to detect the coaxiality of the piston, and the other extrusion component 2 and the clamping component 4 are used to control the piston to maintain the clamped and upright state to be measured. In order to realize the detection, the frame 1 is provided with a through hole 12 and a limit hole 13, wherein the limit hole 13 is arranged above the through hole 12, the through hole 12 is for facilitating the insertion of the detection piston 6 from bottom to top, and the limit hole 13 is convenient for realizing the double-sided limit of the piston 6, wherein the limit hole 13 is installed with a flexible annular gasket 5;

[0034] The extrusion assembly 2 includes a magnetic sensor cylinder 21 symmetrically arranged on the left and right sides of the frame 1. The magnetic sensor cylinder 21 is used to achieve precise control of the piston rod stroke and position detection. A magnetic ring is installed on the cylinder piston. The magnetic sensor can be installed at both ends or the middle position of the cylinder stroke to obtain the detection signal of the piston in the stroke, realize accurate position control, and effectively realize accurate clamping of the piston 6 to be detected. The magnetic sensor cylinder 21 is horizontally provided with a piston rod 22 in the center, and the movable end of the piston rod 22 is provided with a T-shaped clamp 23, and an anti-slip gasket is provided on the side of the clamp 23 facing the piston 6 to be detected. In order to achieve the limiting effect, a flexible snap-on piece 24 is provided on one side of the clamp 23, and the flexible snap-on piece 24 is a C-shaped one-way opening. The inner side of the flexible snap-on piece 24 in contact with the piston 6 to be detected is elastic, which can play a secondary limiting effect. After assembly is completed, the left and right clamps 23 respectively clamp one end of the piston 6 to be detected;

[0035] The detection assembly 3 includes a rotating motor 31 disposed on the top support platform 11, and the rotating motor 31 is connected to the rotating shaft 32 on the top of the rotating disk 33. The rotating disk 33 is detachably provided with a plurality of replaceable detection rods 34. In order to realize the coaxiality detection of various apertures, the rotating disk 33 is provided with a plurality of assembly holes for installing the detection rods 34. The detection rods 34 are locked on the rotating disk 33 by set screws 35. See the attached drawings for details. Figure 3-6 When the coaxiality of a small aperture needs to be measured, the installed detection rod 34 is closer to the center of the rotating disk 33, and when the coaxiality of a large aperture needs to be measured, the installed detection rod 34 is farther away from the center of the rotating disk 33;

[0036] The clamping assembly 4 includes two symmetrically arranged threaded seats 42 arranged on the top support platform 11, and a clamping screw 43 passes horizontally through the threaded seat 42. In order to facilitate manual control of the clamping effect of the piston 6 to be detected, a control handle 41 is provided on the outward side of the clamping screw 43, and in order to reduce the wear on the outer shell of the piston 6 to be detected, a clamping piece made of rubber material is provided on the inward side; during assembly, the two clamping screws 43 clamp the other end of the piston 6 to be detected.

[0037] During the use of the utility model, the piston to be detected is inserted into the device from the bottom to the top through the penetration hole, and is pushed upward to the limit hole and then stopped. The clamp is driven to move to the middle by the magnetic sensor cylinder, and one end of the piston is clamped. Then, the position of the clamping screw on the threaded seat is manually adjusted, so that the clamping screw limits the other end of the piston. At this time, the other end of the piston is sleeved in the detection rod of the detection component. When both sides are limited, the rotating motor is turned on, and the detection rod is driven to rotate by the rotating motor. The circular rotation of the detection rod is used to determine whether the aperture processing inside the piston is in place and whether it meets the processing requirements. If the piston is misplaced or forked during the detection, If there is any problem, stop the rotation of the rotating motor immediately and place the piston in the unqualified area; if there is no problem with the piston during the inspection, reverse the operation of the extrusion assembly and the clamping assembly; remove the piston and turn one end around for re-inspection, and readjust the position of the inspection rod. The inspection method is the same as above. Finally, determine whether the coaxiality of the inner hole of the piston is compliant. In actual operation, for convenience and efficiency, the other end will not be replaced immediately after each inspection of one end. Instead, one end of the pistons of the same batch will be inspected first, and then the other end of the pistons of the same batch will be inspected. In general, the side with a smaller aperture is inspected first and then the side with a larger aperture, so as to avoid repeated replacement of the number and position of the inspection rods.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A piston inner hole coaxiality detection device, characterized in that: The invention comprises a frame (1), a top support platform (11) is installed above the frame (1), a detection component (3) is installed on the top support platform (11), a clamping component (4) is arranged at the upper end of the frame (1), and an extrusion component (2) is arranged at the lower end; during assembly, the extrusion component (2) and the clamping component (4) are used together with the detection component (3); The extrusion assembly (2) comprises a magnetic sensor cylinder (21) symmetrically arranged on the left and right sides of the frame (1), a piston rod (22) being arranged horizontally in the center of the magnetic sensor cylinder (21), a clamp (23) being arranged at the movable end of the piston rod (22), and the clamps (23) on the left and right sides respectively clamp one end of the piston (6) to be detected; The detection assembly (3) comprises a rotating motor (31) arranged on the top support platform (11), the rotating motor (31) is connected to a rotating shaft (32) at the top of a rotating disk (33), and a plurality of replaceable detection rods (34) are detachably arranged on the rotating disk (33); The clamping assembly (4) comprises two symmetrically arranged threaded seats (42) arranged on the top support platform (11), and a clamping screw (43) horizontally passes through the threaded seat (42); during assembly, the two clamping screws (43) clamp the other end of the piston (6) to be tested.

2. A piston inner hole coaxiality detection device according to claim 1, characterized in that: A flexible snap-on piece (24) is provided on one side of the clamp (23), and the flexible snap-on piece (24) is provided with a C-shaped one-way opening, and the inner side of the flexible snap-on piece (24) in contact with the piston (6) to be detected is elastic.

3. A piston inner hole coaxiality detection device according to claim 1, characterized in that: The rotating disk (33) is provided with a plurality of assembly holes for installing a detection rod (34), and the detection rod (34) is locked on the rotating disk (33) by means of a set screw (35).

4. A piston inner hole coaxiality detection device according to claim 1, characterized in that: The clamping screw rod (43) is provided with a control handle (41) on its outward side and a clamping sheet made of rubber material on its inward side.

5. A piston inner hole coaxiality detection device according to any one of claims 1 to 4, characterized in that: The frame (1) is provided with a through hole (12) and a limiting hole (13), and the limiting hole (13) is arranged above the through hole (12).

6. A piston inner hole coaxiality detection device according to claim 5, characterized in that: A flexible annular gasket (5) is installed in the limiting hole (13).

7. A piston inner hole coaxiality detection device according to claim 6, characterized in that: The clamp (23) is T-shaped, and a non-slip pad is provided on the side of the clamp (23) facing the piston (6) to be detected.

8. A piston inner hole coaxiality detection device according to claim 7, characterized in that: The top support platform (11) is a lifting type support platform.

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