Detection device for polygonal structure of rod-shaped workpiece

Abstract

A detection device for a polygonal structure of a rod-shaped workpiece comprises a fixing plate, a pneumatic clamping jaw and a displacement sensor are installed on the upper end face of the fixing plate, a holding finger of the pneumatic clamping jaw is used for clamping a rotating bearing arranged on the rod-shaped workpiece, and the displacement sensor is arranged on the side of the holding finger of the pneumatic clamping jaw. The displacement sensor is used for collecting the distance between the polygonal structure of the rod-shaped workpiece and the displacement sensor, a plurality of stand columns extending downwards are arranged below the fixing plate, a bottom plate is arranged at the bottom ends of the stand columns, a jacking mechanism is arranged on the upper end face of the bottom plate, and a rotating motor is installed on a piston rod of the jacking mechanism; the upper end face of the rotating motor is provided with a lifting plate which is arranged on the stand column in a sliding fit mode, and a rotating shaft of the rotating motor extends upwards, penetrates through a through hole in the lifting plate and a receding hole in the fixing plate and is connected with one end of a rod-shaped workpiece.

Description

Technical Field

[0001] This utility model relates to the field of detection devices, specifically to a detection device for a polygonal structure of a rod-shaped workpiece. Background Technology

[0002] In production such as Figure 3 When working with the rod-shaped workpiece shown, an octagonal riveting process is required to form an octagonal limiting part, which is used to limit the rolling bearing mounted on the rod-shaped workpiece. To verify the riveting effect of the octagonal riveting process, the dimensions of the octagonal limiting part need to be measured to ensure that the riveting effect meets production requirements.

[0003] Currently, the dimensions of polygonal structures that have undergone octagonal riveting are typically measured manually using tools such as vernier calipers to inspect the riveting effect. However, due to the small size of the products and limited operating space, manual measurement is difficult, resulting in low efficiency and difficulty in ensuring inspection accuracy. Another method is to use a coordinate measuring machine (CMM) to measure the dimensions of the polygonal structure, but CMMs are expensive and slow, and are usually only suitable for random sampling.

[0004] Therefore, there is currently a lack of a device specifically designed for measuring and inspecting the dimensions of polygonal structures on rod-shaped workpieces, which fails to meet the demand for efficient and accurate dimensional inspection. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a detection device for the polygonal structure of a rod-shaped workpiece. The device uses pneumatic grippers to hold a rolling bearing mounted on the upper part of the workpiece. A rotary motor drives the rod-shaped workpiece to rotate circumferentially. A displacement sensor collects the distance between the polygonal structure of the rod-shaped workpiece and the displacement sensor, converts it into the size of the polygonal structure, and determines whether the polygonal structure of the rod-shaped workpiece meets the manufacturing standards.

[0006] The technical solution of this utility model is implemented as follows:

[0007] A detection device for a polygonal structure of a rod-shaped workpiece includes a fixed plate. A pneumatic gripper and a displacement sensor are mounted on the upper surface of the fixed plate. The gripping fingers of the pneumatic gripper are used to hold a rotary bearing mounted on the rod-shaped workpiece. The displacement sensor is located on the side of the gripping fingers of the pneumatic gripper and is used to collect the distance between the polygonal structure of the rod-shaped workpiece and the displacement sensor. Multiple downwardly extending columns are provided below the fixed plate. A base plate is provided at the bottom of each column. A lifting mechanism is provided on the upper surface of the base plate. A rotary motor is mounted on the piston rod of the lifting mechanism. A lifting plate is provided on the upper surface of the rotary motor and is slidably fitted on the columns. The rotating shaft of the rotary motor extends upward and passes through a through hole on the lifting plate and a clearance hole on the fixed plate, connecting to one end of the rod-shaped workpiece.

[0008] Preferably, the shaft of the rod-shaped workpiece is provided with an axially extending external spline at one end, and the rotating shaft of the rotary motor is provided with an upwardly extending internal spline sleeve, the external spline of the shaft of the rod-shaped workpiece can be sleeved in the internal spline sleeve to form circumferential fixation.

[0009] Preferably, the displacement sensor is two, and is oppositely arranged on both sides of the pneumatic clamp jaw holding finger.

[0010] Preferably, the displacement sensor is a laser displacement sensor.

[0011] Preferably, the pneumatic clamp jaw is a parallel clamp jaw, and the lower end face of the parallel clamp jaw is provided with a clearance groove for the laser emitted by the displacement sensor.

[0012] Preferably, the jacking mechanism is an electric cylinder or a pneumatic cylinder.

[0013] Preferably, the column is a round shaft, and is sleeved in the linear bearing barrel provided on the lifting plate.

[0014] Preferably, the clearance hole on the fixed plate is U-shaped, the pneumatic clamp jaw is arranged on the circular arc side of the U-shaped opening, and the displacement sensor is arranged on the straight side of the U-shaped opening.

[0015] Preferably, the displacement sensor is mounted on the fixed plate through a fixed support.

[0016] Preferably, the number of columns is even, and the plane where the jacking mechanism, the rotary motor, the rod-shaped workpiece and the pneumatic clamp jaw are located is the symmetry plane of the fixed plate, the lifting plate, the bottom plate and the column.

[0017] The beneficial effects of the utility model are as follows:

[0018] High-precision detection: the displacement sensor collects the distance between the polygonal structure of the rod-shaped workpiece and the displacement sensor, realizing high-precision measurement of the polygonal structure size of the rod-shaped workpiece. The laser displacement sensor can accurately obtain the workpiece size without contact, avoiding the error and loss caused by contact measurement, thereby ensuring the accuracy and consistency of the measurement result.

[0019] Simple operation and high work efficiency: the jacking mechanism of the detection device controls the lifting of the rotary motor, the rotary motor can be connected with one end of the rod-shaped workpiece when it is lifted, and drives the rod-shaped workpiece to rotate, the pneumatic clamp jaw is used to clamp the rod-shaped workpiece, through the above-mentioned automatic function, the size detection task of multiple workpieces can be quickly completed, the detection efficiency is greatly improved, and full detection of the polygonal structure of the rod-shaped workpiece can be realized.

[0020] Low cost: compared with high three coordinate measuring instrument, the detection device of the utility model not only can satisfy production demand in precision, but also is more economical in equipment cost and maintenance cost, and detects more quickly.

[0021] Wide applicability: the design of the detection device has strong adaptability, can be adjusted according to different specifications of rod-shaped workpieces, and is applicable to size detection of various polygonal structures (quadrilateral, hexagon, octagon, etc.). BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model;

[0023] Figure 2 It is an elevation view of the utility model;

[0024] Figure 3 It is a structural schematic diagram of a rod-shaped workpiece;

[0025] Figure 4 It is a displacement sensor output data coordinate graph when detecting a polygonal structure of a rod-shaped workpiece. DETAILED DESCRIPTION

[0026] As Figures 1 to 2 shown, a detection device of a polygonal structure of a rod-shaped workpiece, including a fixed plate 3, the upper end face of the fixed plate 3 is installed with pneumatic clamping jaw 11 and displacement sensor 12, the displacement sensor 12 is installed on the fixed plate 3 through the fixed support, the holding finger of the pneumatic clamping jaw 11 is used to clamp the rotating bearing 13 arranged on the rod-shaped workpiece, the displacement sensor 12 is arranged at the side of the holding finger of the pneumatic clamping jaw 11, for collecting the distance between the polygonal structure 9 of the rod-shaped workpiece and the displacement sensor 12, the displacement sensor 12 is a laser displacement sensor;The displacement sensor 12 is two, oppositely arranged on the two sides of the holding finger of the pneumatic clamping jaw 11;The pneumatic clamping jaw 11 is parallel clamping jaw, the holding side wall of the holding finger is V-shaped, which is convenient for clamping bearing, the lower end face of the parallel clamping jaw is provided with a let slot 17, the let slot 17 is parallelly arranged with the laser emitted by the displacement sensor 12, for passing through the laser emitted by the displacement sensor 12, when the height of the pneumatic clamping jaw 11 is higher, the let slot 17 can not be arranged;

[0027] The fixing plate 3 is provided with a plurality of downward extending columns 2, the column 2 is a round shaft, the bottom end of the column 2 is provided with a bottom plate 1, the upper end surface of the bottom plate 1 is provided with a jacking mechanism 4, the jacking mechanism 4 is an electric cylinder or a pneumatic cylinder, a rotary motor 5 is installed on the piston rod of the jacking mechanism, the rotary motor 5 is provided below a mounting seat, the rotary motor 5 is arranged above the mounting seat, a cavity for installing a nut is arranged in the mounting seat, the piston rod of the jacking mechanism extends into the mounting seat from the lower end surface of the mounting seat, and the piston rod and the mounting seat are fixedly connected through the nut arranged in the mounting seat;

[0028] The upper end surface of the rotary motor 5 is provided with a lifting plate 6 which is slidingly fitted on the column 2; the lifting plate 6 is provided with a linear bearing 16, and the column 2 is slidingly fitted in the cylinder of the linear bearing 16, so that the sliding fit between the column 2 and the lifting plate 6 is realized;

[0029] The rotating shaft 7 of the rotary motor 5 extends upward, is connected with one end of the rod-shaped workpiece and passes through the through hole in the lifting plate 6 and the accommodating hole 8 in the fixing plate 3, the accommodating hole 8 in the fixing plate 3 is in a U shape, the pneumatic clamping jaw 11 is arranged on the arc side of the U-shaped opening, and the displacement sensor 12 is arranged on the linear side of the U-shaped opening;

[0030] The rotating shaft 7 of the rotary motor 5 is connected with the rod-shaped workpiece in a specific manner that the shaft 10 of the rod-shaped workpiece is provided with an axially extending external spline 15, the rotating shaft 7 of the rotary motor 5 is provided with an upward extending internal spline sleeve 14, the internal spline sleeve 14 is fixedly arranged at the top end of the rotating shaft 7 of the rotary motor 5 through a clamp structure, and the external spline 15 of the shaft 10 of the rod-shaped workpiece can be sleeved in the internal spline sleeve 14 to form circumferential fixation, so that the rotating shaft 7 of the rotary motor 5 can drive the rod-shaped workpiece to rotate circumferentially through the structure;

[0031] The number of the columns 2 is even, and the plane where the jacking mechanism 4, the rotary motor 5, the rod-shaped workpiece and the pneumatic clamping jaw 11 are located is the symmetry plane of the fixing plate 3, the lifting plate 6, the bottom plate 1 and the column 2.

[0032] The working principle of the utility model is as follows:

[0033] The jacking mechanism 4 jacks up the rotary motor 5, so that the external spline 15 of the shaft 10 of the rod-shaped workpiece is inserted into the internal spline sleeve 14 arranged on the rotating shaft 7 of the rotary motor 5 to form spline fit circumferential fixation, the rotary bearing 13 sleeved on the rod-shaped workpiece is clamped in the gripping fingers of the pneumatic clamping jaw 11, the rotary motor 5 drives the rod-shaped workpiece to rotate circumferentially, the distance between the polygonal structure 9 of the rod-shaped workpiece and the displacement sensor 12 is collected by the displacement sensor 12, the distance is converted into the size of the polygonal structure, whether the polygonal structure of the rod-shaped workpiece meets the production and manufacturing standard is judged, the rotary motor 5 stops rotating at the end, and the jacking mechanism 4 descends and separates from the rod-shaped workpiece.

[0034] When two displacement sensors 12 are provided, one detection cycle is completed when the rod-shaped workpiece rotates one circle, as shown in the figure. Figure 4 The octagonal structure of the rod-shaped workpiece is measured using the device, wherein the distance data collected by the two displacement sensors 12 are L1 and L2 respectively, wherein =L1+L2 is the real-time measurement value, and the four minimum are the four opposite side sizes of the product.

[0035] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and the changes made by those skilled in the art to the present application without departing from the spirit of the present application all fall within the protection scope of the present application.

Claims

1. An apparatus for detecting a polygonal structure of a rod-shaped workpiece, characterized by: The utility model relates to a kind of polygonal structure measuring device, including a fixed plate (3), the upper end surface of the fixed plate (3) is equipped with pneumatic gripper (11) and displacement sensor (12), the grip finger of the pneumatic gripper (11) is used to hold the rotating bearing (13) being arranged on pole-shaped workpiece, displacement sensor (12) is arranged in the side of the grip finger of pneumatic gripper (11), for collecting the distance between the polygonal structure (9) of pole-shaped workpiece and displacement sensor (12), the fixed plate (3) below is equipped with multiple downward extending columns (2), the bottom plate (1) is equipped at the bottom end of the column (2), the top surface of the bottom plate (1) is equipped with jacking mechanism (4), a rotating motor (5) is installed on the piston rod of jacking mechanism, the upper end surface of the rotating motor (5) is equipped with lifting plate (6) slidingly fitted on column (2), the rotating shaft (7) of the rotating motor (5) extends upwards, and passes through the through hole on lifting plate (6) and the accommodation hole (8) on fixed plate (3), and is connected with one end of pole-shaped workpiece.

2. The apparatus for detecting a polygonal structure of a rod-shaped workpiece according to claim 1, characterized by: The shaft pole (10) of the pole-shaped workpiece is equipped with axially extending external spline (15) on one end, the rotating shaft (7) of the rotating motor (5) is equipped with an upward extending internal spline sleeve (14), the external spline (15) of the shaft pole (10) of pole-shaped workpiece can be sleeved in the internal spline sleeve (14), and circumferential fixation is formed.

3. The apparatus for detecting a polygonal structure of a rod-shaped workpiece according to claim 1, characterized by: The displacement sensor (12) is two, and is oppositely arranged on the two sides of the grip finger of pneumatic gripper (11).

4. The apparatus for detecting a polygonal structure of a rod-shaped workpiece according to claim 1 or 3, characterized in that: The displacement sensor (12) is a laser displacement sensor, the pneumatic gripper (11) is parallel gripper, the lower end surface of the parallel gripper is provided with an accommodation groove (17), and the accommodation groove (17) is used to pass the laser emitted by displacement sensor (12).

5. The apparatus for detecting a polygonal structure of a rod-shaped workpiece according to claim 1, characterized by: The jacking mechanism (4) is electric cylinder or air cylinder.

6. The apparatus for detecting a polygonal structure of a rod-shaped workpiece according to claim 1, characterized by: The column (2) is a circular shaft, and is sleeved in the cylinder of linear bearing (16) provided on lifting plate (6).

7. The apparatus for detecting a polygonal structure of a rod-shaped workpiece according to Claim 1, wherein: The accommodation hole (8) on the fixed plate (3) is U-shaped, the pneumatic gripper (11) is arranged on the circular side of the U-shaped opening, and the displacement sensor (12) is arranged on the straight side of the U-shaped opening.

8. The apparatus for detecting a polygonal structure of a rod-shaped workpiece according to Claim 1, wherein: The displacement sensor (12) is installed on the fixed plate (3) by fixing support.

9. The apparatus for detecting a polygonal structure of a rod-shaped workpiece according to Claim 1, wherein: The number of the column (2) is even, and the plane where the jacking mechanism (4), the rotating motor (5), the pole-shaped workpiece and the pneumatic gripper (11) are located is the symmetry plane of the fixed plate (3), the lifting plate (6), the bottom plate (1) and the column (2).

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