Device for detecting the shape of needle rollers

Abstract

The present invention relates to a device for detecting the shape of a needle roller, comprising a crossbeam and a base, wherein the crossbeam is located above the base, a slide groove is provided inside the crossbeam, and a connecting rod is movably installed inside the slide groove, the lower end of the connecting rod is fixedly connected to a horizontal adjustment bolt, and the lower end of the horizontal adjustment bolt is fixedly connected to a vertical screw, the lower end of the crossbeam is fixedly connected to a motor fixing plate near one side, and a motor is fixedly installed on the outer surface of one side of the motor fixing plate, the output end of the motor is fixedly connected to a horizontal screw, and the horizontal screw is movably connected to the horizontal adjustment bolt, and a bracket seat and a vertical adjustment bolt are movably installed on the outer surface of the vertical screw. The device for detecting the shape of a needle roller uses a comparison method to compare the needle roller to be tested with a standard needle roller, and can quickly and intuitively detect whether the needle roller to be tested is standard in data, which speeds up the detection speed and has higher detection accuracy.

Description

Technical Field

[0001] The invention belongs to the technical field of key bearing component detection, and in particular relates to a device for detecting the shape of a needle roller. Background Art

[0002] Needle roller bearings are roller bearings with cylindrical rollers. Relative to their diameter, the rollers are thin and long. This type of roller is called a needle roller. During the rotation of the bearing, the needle rollers continuously rub against the bearing rings, rolling elements and retainers. In order to reduce the friction and wear inside the bearing, extend the service life of the needle rollers and ensure the accuracy of the bearings, the shape detection of the needle rollers is an essential step before the needle rollers leave the factory. According to statistics, logarithmic rollers have better performance and are more durable than rollers of other shapes.

[0003] At present, the shape of needle rollers is mainly detected by human eyes. This method is not only time-consuming and laborious, but also causes certain errors in the detection results due to human subjective consciousness, which often leads to workers making mistakes in the detection of needle roller shapes. Therefore, it is of great significance to develop and manufacture a detection device that can quickly, efficiently and accurately measure the shape of needle rollers. Summary of the invention

[0004] The purpose of the present invention is to provide a device for detecting the shape of a needle roller with a simple structure and reasonable design in order to solve the above problems.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0006] The device for detecting the shape of a needle roller comprises a crossbeam and a base, wherein the crossbeam is located above the base, a slide groove is arranged inside the crossbeam, and a connecting rod is movably installed inside the slide groove, a horizontal adjusting bolt is fixedly connected to the lower end of the connecting rod, and a vertical screw is fixedly connected to the lower end of the horizontal adjusting bolt, a motor fixing plate is fixedly connected to a position near one side of the lower end of the crossbeam, and a motor is fixedly installed on an outer surface of one side of the motor fixing plate, a horizontal screw is fixedly connected to the output end of the motor, and the horizontal screw is movably connected to the horizontal adjusting bolt, a bracket seat and a vertical adjusting bolt are movably installed on the outer surface of the vertical screw, and the lower end outer surface of the bracket seat near both ends A position is fixedly connected with a profiling adjustment screw, a profiling adjustment bolt is movably installed on the outer surface of the profiling adjustment screw, and a pressure sensor fixing shell is fixed at the lower end of the profiling adjustment bolt, a pressure sensor is fixedly installed inside the pressure sensor fixing shell, and a reset spring is fixedly connected to the lower end of the pressure sensor, and a profiling needle is fixedly connected to the lower end of the reset spring, a needle roller fixing mechanism, a pressure recorder and a level ruler are installed on the upper end of the base, and the pressure recorder is electrically connected to the pressure sensor, a needle roller is arranged inside the needle roller fixing mechanism, and the level ruler can detect the horizontal degree of the entire device to determine whether the horizontal plane of the needle roller to be tested is consistent with that of the standard needle roller during detection;

[0007] The needle roller fixing mechanism includes a movable support seat and a fixed support seat, and the movable support seat is located on one side of the fixed support seat, a fixing bolt is provided on the side of the movable support seat away from the fixed support seat, and an adjusting screw is movably connected inside the fixing bolt, one end of the adjusting screw is movably connected to the movable support seat, and rotating the adjusting screw can drive the movable support seat to move horizontally to clamp the needle roller.

[0008] As a further optimization scheme of the present invention, the number of the needle roller fixing mechanisms is two groups, the needle rollers placed inside one group of the needle roller fixing mechanisms are standard needle rollers, and the needle rollers placed inside the other group of the needle roller fixing mechanisms are test needle rollers. By comparing the standard needle rollers with the test needle rollers, it can be detected whether the shape of the test needle rollers is standard.

[0009] As a further optimization scheme of the present invention, the roller needle fixing mechanism and the template needle are located in the same vertical plane, the two groups of template needles are equal in length, the two groups of reset springs have the same length and elastic coefficient, and the pressure changes transmitted by the two groups of pressure sensors are recorded by a pressure recorder. The deformation of the spring can be inferred by the pressure difference, thereby determining whether the shape of the roller needle to be tested is standard.

[0010] As a further optimization scheme of the present invention, the pressure recorder is located between the two sets of roller needle fixing mechanisms, and the pressure recorder and the two sets of roller needle fixing mechanisms are not located in the same vertical plane. The pressure recorder can adopt a SIN-R9600 paperless pressure recorder.

[0011] As a further optimization scheme of the present invention, the input ends of the motor and the pressure recorder are electrically connected to the output end of the external power supply, and the motor is electrically connected to a movable switch, which can more conveniently control the motor.

[0012] As a further optimization scheme of the present invention, the number of the vertical adjustment bolts is two groups, and the vertical adjustment bolts are respectively located at the upper and lower ends of the bracket seat, and adjusting the vertical adjustment bolts can control the bracket seat to move up and down on the vertical screw rod.

[0013] As a further optimization scheme of the present invention, the horizontality of the cross beam and the base is the same, a ball groove is arranged between the connecting rod and the slide groove, and balls are arranged inside the ball groove. The balls can reduce the friction between the connecting rod and the slide groove and reduce the loss of motor output power.

[0014] The beneficial effects of the present invention are:

[0015] 1) The present invention adopts a comparison method to fix the standard needle roller and the needle roller to be tested, so that the two groups of template needles are in contact with the surfaces of the two groups of needle rollers. At this time, the reset spring is in an extremely compressed state. The template needle is driven by a motor to slide over the surfaces of the two groups of needle rollers. The irregular surface of the needle roller to be tested will cause the reset spring to deform, so that the pressure received by the pressure sensor changes. The pressure recorder records the changes in the pressure transmitted by the two groups of pressure sensors. After comparison, it can be known whether the shape of the needle roller to be tested is standard. The device can be used to quickly and accurately detect the needle roller, which can reduce the waste of manpower and material resources, and the detection is fast and accurate.

[0016] 2) The present invention has a simple structure, high stability, reasonable design and is easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a matching view of the horizontal adjustment bolt and the crossbeam of the present invention;

[0019] Figure 3 It is a matching view of the roller needle and the template needle of the present invention.

[0020] In the figure: 1 crossbeam, 2 motor fixing plate, 3 motor, 4 level ruler, 5 base, 6 mold adjusting screw, 7 needle roller fixing mechanism, 71 adjusting screw, 72 fixing bolt, 73 movable support seat, 74 fixed support seat, 8 needle roller, 9 pressure recorder, 10 vertical adjustment bolt, 11 horizontal screw, 12 vertical screw, 13 connecting rod, 14 horizontal adjustment bolt, 15 slide groove, 16 bracket seat, 17 pressure sensor, 18 mold adjusting bolt, 19 reset spring, 20 mold needle, 21 pressure sensor fixing shell. DETAILED DESCRIPTION

[0021] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0022] Example 1

[0023] like Figure 1-3 As shown, the device for detecting the shape of a needle roller comprises a crossbeam 1 and a base 5, the crossbeam 1 is located above the base 5, a slide groove 15 is arranged inside the crossbeam 1, and a connecting rod 13 is movably installed inside the slide groove 15, a horizontal adjustment bolt 14 is fixedly connected to the lower end of the connecting rod 13, and a vertical screw 12 is fixedly connected to the lower end of the horizontal adjustment bolt 14, a motor fixing plate 2 is fixedly connected to a position near one side of the lower end of the crossbeam 1, and a motor 3 is fixedly installed on the outer surface of one side of the motor fixing plate 2, a horizontal screw 11 is fixedly connected to the output end of the motor 3, and the horizontal screw 11 is movably connected to the horizontal adjustment bolt 14, and a bracket seat 16 is movably installed on the outer surface of the vertical screw 12 A straight adjustment bolt 10, and a profiling adjustment screw 6 is fixedly connected to the outer surface of the lower end of the bracket seat 16 near the two ends, and a profiling adjustment bolt 18 is movably installed on the outer surface of the profiling adjustment screw 6, and a pressure sensor fixing shell 21 is fixed to the lower end of the profiling adjustment bolt 18, and a pressure sensor 17 is fixedly installed inside the pressure sensor fixing shell 21, and a reset spring 19 is fixedly connected to the lower end of the pressure sensor 17, and a profiling needle 20 is fixedly connected to the lower end of the reset spring 19, and a roller needle fixing mechanism 7, a pressure recorder 9 and a level ruler 4 are installed on the upper end of the base 5, and the pressure recorder 9 is electrically connected to the pressure sensor 17, and a roller needle 8 is arranged inside the roller needle fixing mechanism 7;

[0024] The needle roller fixing mechanism 7 includes a movable support seat 73 and a fixed support seat 74, and the movable support seat 73 is located on one side of the fixed support seat 74, and a fixing bolt 72 is provided on the side of the movable support seat 73 away from the fixed support seat 74, and an adjusting screw 71 is movably connected inside the fixing bolt 72, and one end of the adjusting screw 71 is movably connected to the movable support seat 73. The number of the needle roller fixing mechanism 7 is two groups, and the needle rollers 8 placed inside one group of needle roller fixing mechanisms 7 are standard needle rollers, and the needle rollers 8 placed inside the other group of needle roller fixing mechanisms 7 are needle rollers to be tested, and the needle roller fixing mechanism 7 and the template needle 20 are located on the same vertical plane. Inside, the lengths of the two groups of template needles 20 are equal, the lengths and elastic coefficients of the two groups of reset springs 19 are the same, the pressure recorder 9 is located between the two groups of needle roller fixing mechanisms 7, and the pressure recorder 9 and the two groups of needle roller fixing mechanisms 7 are not located on the same vertical plane, the input ends of the motor 3 and the pressure recorder 9 are electrically connected to the output ends of the external power supply, the motor 3 is electrically connected to a mobile switch, the number of vertical adjustment bolts 10 is two groups, and the vertical adjustment bolts 10 are respectively located at the upper and lower ends of the bracket seat 16, the horizontality of the crossbeam 1 and the base 5 is the same, a ball groove is arranged between the connecting rod 13 and the slide groove 15, and a ball is arranged inside the ball groove.

[0025] It should be noted that the needle roller to be tested and the standard needle roller are placed on the needle roller fixing mechanism 7 respectively, and the adjusting screw 71 is tightened to pre-tighten the needle roller to be tested and the standard needle roller, and then the vertical adjusting bolt 10 is adjusted so that the template needle 20 is higher than the surface of the needle roller to be tested and the standard needle roller, and the motor 3 is started. The motor 3 drives the horizontal screw 11 to rotate, and the horizontal screw 11 drives the horizontal adjusting bolt 14 to move horizontally when it rotates. When the template needle 20 moves to the edge of the upper surface of the needle roller to be tested and the standard needle roller, the vertical adjusting bolt 10 is adjusted so that the template needle 20 is initially in contact with the surface of the needle roller to be tested and the standard needle roller, and the pressure value displayed on the pressure recorder 9 is observed. The value displayed on the pressure recorder 9 is the pressure difference between the pressure at the standard needle roller and the pressure at the needle roller to be tested. When the pressure difference is not zero, the template adjusting bolt 18 is adjusted so that The value on the pressure gauge is zero, the pressure sensor 17 is placed inside the pressure sensor fixed shell 21, one end of the reset spring 19 is connected to the pressure sensor 17, and the other end is connected to the template needle 20, and the reset spring 19 is in a compressed state. The compressed reset spring 19 can achieve self-reset. When the value of the pressure gauge is zero, the motor 3 is turned on again, so that the template needle 20 passes over the surface of the needle roller to be tested and the standard needle roller until it is separated from the needle roller to be tested and the standard needle roller. The pressure recorder 9 records the pressure difference generated when the template needle 20 passes over the needle roller to be tested and the standard needle roller, and then the shape error between the needle roller to be tested and the standard needle roller can be calculated based on the elastic coefficient of the reset spring 19, so as to determine whether the shape of the needle roller to be tested is qualified. After the detection is completed, the needle roller to be tested is rotated and measured again, and each needle roller to be tested is measured three times.

[0026] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A device for detecting the shape of a needle roller, comprising a crossbeam (1) and a base (5), wherein the crossbeam (1) is located above the base (5), and is characterized in that: The cross beam (1) is provided with a slide groove (15) inside, and a connecting rod (13) is movably installed inside the slide groove (15), the lower end of the connecting rod (13) is fixedly connected to a horizontal adjustment bolt (14), and the lower end of the horizontal adjustment bolt (14) is fixedly connected to a vertical screw rod (12), the lower end of the cross beam (1) is fixedly connected to a motor fixing plate (2) near one side, and a motor (3) is fixedly installed on the outer surface of one side of the motor fixing plate (2), the output end of the motor (3) is fixedly connected to a horizontal screw rod (11), and the horizontal screw rod (11) is movably connected to the horizontal adjustment bolt (14), the outer surface of the vertical screw rod (12) is movably installed with a bracket seat (16) and a vertical adjustment bolt (10), and the lower end of the bracket seat (16) is fixedly connected to the motor fixing plate (2). A profiling adjustment screw (6) is fixedly connected at a position near both ends of the outer surface, a profiling adjustment bolt (18) is movably mounted on the outer surface of the profiling adjustment screw (6), and a pressure sensor fixing shell (21) is fixed to the lower end of the profiling adjustment bolt (18), a pressure sensor (17) is fixedly mounted inside the pressure sensor fixing shell (21), and a return spring (19) is fixedly connected to the lower end of the pressure sensor (17), and a profiling needle (20) is fixedly connected to the lower end of the return spring (19), a needle roller fixing mechanism (7), a pressure recorder (9) and a level ruler (4) are mounted on the upper end of the base (5), and the pressure recorder (9) is electrically connected to the pressure sensor (17), and a needle roller (8) is arranged inside the needle roller fixing mechanism (7); The needle roller fixing mechanism (7) comprises a movable support seat (73) and a fixed support seat (74), wherein the movable support seat (73) is located on one side of the fixed support seat (74), a fixing bolt (72) is provided on a side of the movable support seat (73) away from the fixed support seat (74), and an adjusting screw (71) is movably connected inside the fixing bolt (72), and one end of the adjusting screw (71) is movably connected to the movable support seat (73); The number of the needle roller fixing mechanisms (7) is two groups, wherein the needle rollers (8) placed inside one group of the needle roller fixing mechanisms (7) are standard needle rollers, and the needle rollers (8) placed inside the other group of the needle roller fixing mechanisms (7) are needle rollers to be tested; The input ends of the motor (3) and the pressure recorder (9) are both electrically connected to the output end of an external power supply, and the motor (3) is electrically connected to a movable switch.

2. The device for detecting the shape of a needle roller according to claim 1, characterized in that: The roller needle fixing mechanism (7) and the template needle (20) are located in the same vertical plane, the two groups of template needles (20) are of equal length, and the two groups of return springs (19) are of the same length and elastic coefficient.

3. The device for detecting the shape of a needle roller according to claim 1, characterized in that: The pressure recorder (9) is located between the two sets of roller needle fixing mechanisms (7), and the pressure recorder (9) and the two sets of roller needle fixing mechanisms (7) are not located on the same vertical plane.

4. The device for detecting the shape of a needle roller according to claim 1, characterized in that: The number of the vertical adjustment bolts (10) is two groups, and the vertical adjustment bolts (10) are respectively located at the upper and lower ends of the bracket seat (16).

5. The device for detecting the shape of a needle roller according to claim 1, characterized in that: The horizontality of the cross beam (1) and the base (5) is the same; a ball groove is provided between the connecting rod (13) and the slide groove (15); and a ball is provided inside the ball groove.

Images