Needle roller diameter testing device

Abstract

The utility model relates to the technical field of roller pin diameter measurement, in particular to a roller pin diameter testing device, which comprises a base, a measuring table and a scale, the middle part of the upper end of the base is fixedly connected with the measuring table, and measuring seats which are distributed in bilateral symmetry about the measuring table and can move along the transverse direction are arranged above the base. A measuring rod is fixedly connected to the upper end of the measuring seat, an infrared transmitter is fixedly connected to the end, away from the measuring table, of the measuring seat, infrared receivers distributed in a bilateral symmetry mode are fixedly connected to the upper end of the base, the infrared receivers are aligned with the light emitting direction of the infrared transmitter, and a guide mechanism is arranged at the upper end of the base. Positioning mechanisms are arranged in the guide mechanism and the measuring table, the guide mechanism comprises four threaded columns, and the four threaded columns are evenly arranged on the outer side of the measuring table in a surrounding mode; manual operation is not needed, signal transmission of the infrared transmitter and the infrared receiver serves as an auxiliary judgment basis, the measurement result is more reliable, and the guide seat can be adjusted in a lifting mode so as to adapt to roller pins of different sizes.

Description

Technical Field

[0001] This utility model relates to the field of needle roller diameter measurement technology, and in particular to a needle roller diameter testing device. Background Technology

[0002] As an important component in mechanical transmission, the accuracy of the diameter of needle rollers directly affects the operating performance and lifespan of mechanical equipment. Currently, most methods for measuring the diameter of needle rollers suffer from problems such as low efficiency, low accuracy, or complex operation.

[0003] Traditional measuring tools, such as vernier calipers, require manual operation, are slow, and are easily affected by human factors. While some automated measuring equipment has high measurement accuracy, it is complex in structure, expensive, and has strict requirements for the operating environment.

[0004] Therefore, since most of the existing testing devices rely on manual operation, the measurement speed is slow and easily affected by human factors, and some automated measuring devices, although highly accurate, are complex in structure, expensive, and have strict requirements for the operating environment, a needle roller diameter testing device can be designed. Through a unique structural design, it can achieve efficient and accurate measurement of the needle roller diameter, and the parts are reasonably designed and the cost is low. Utility Model Content

[0005] In order to overcome the problems that existing testing devices mostly rely on manual operation, have slow measurement speed and are easily affected by human factors, and that some automated measurement devices, although having high measurement accuracy, are complex in structure, expensive, and have strict requirements for the operating environment.

[0006] The technical solution of this utility model is as follows: a needle roller diameter testing device, including a base, a measuring platform, and a scale. The measuring platform is fixedly connected to the middle of the upper end of the base. A measuring seat is symmetrically distributed about the measuring platform and can move laterally above the base. A measuring rod is fixedly connected to the upper end of the measuring seat. An infrared emitter is fixedly connected to the end of the measuring seat away from the measuring platform. Infrared receivers are symmetrically distributed about the left and right sides and are aligned with the light emission direction of the infrared receivers and the infrared emitter. A guide mechanism is provided at the upper end of the base. A positioning mechanism is provided in both the guide mechanism and the measuring platform. The guide mechanism includes four threaded posts, which are evenly arranged around the outside of the measuring platform. The threaded posts are fixedly connected to the base. A liftable guide seat is provided outside the four threaded posts. An adjusting nut is threadedly connected to the outer side of the upper end of the threaded posts. A first return spring is sleeved on the outer side of the lower part of the threaded posts. The positioning mechanism includes a locking rod. A locking plate is fixedly connected to the outer end of the locking rod. A soft pad is fixedly connected to the inner end of the locking rod. A second return spring is sleeved on the outer side of the locking rod.

[0007] Preferably, based on the approximate size of the needle roller to be tested, the operator rotates the adjusting nut to move the guide seat up and down on the threaded column, adjusting the guide seat to a suitable height. The first return spring acts as a buffer and auxiliary positioning to ensure smooth movement of the guide seat. After adjustment, ensuring the guide seat is fixed in position, the operator pulls the locking plate outward, causing the locking rod to move outward. At this time, the second return spring is compressed, and the soft pad at the inner end of the locking rod moves away from the measuring table. The needle roller to be tested is placed in the center of the measuring table, and the locking plate is slowly released. Under the elastic force of the second return spring, the locking rod moves inward. The soft pad gradually approaches the needle roller, eventually clamping it gently. The soft pad protects the needle roller. The measuring seat is moved inward, allowing it to move laterally towards the measuring table. The measuring rod at the top of the measuring seat then approaches the needle roller. The distance the measuring seat moves is read using a scale. By combining the fixed positional relationship between the measuring rod and the measuring seat, the diameter of the needle roller is calculated. Simultaneously, the signal transmission status of the infrared transmitter and receiver can also serve as an auxiliary basis for judgment. After the measurement is completed, the operator pulls the locking plate outward again to open the positioning mechanism, moving the soft pad away from the needle roller. Then, the needle roller is carefully removed from the measuring table.

[0008] Preferably, the first reset spring is fixedly connected to the guide seat and the base. The guide seat and the measuring platform are aligned vertically. The measuring platform has a cylindrical structure and a circular groove in the center. The diameter of the groove is larger than the maximum diameter of the needle roller to be measured. The bottom of the groove has evenly distributed small holes.

[0009] Preferably, the locking rod is inserted into the measuring platform and the guide seat, and there are no less than 3 locking rods in the measuring platform and the guide seat. One end of the second return spring is fixedly connected to the measuring platform and the guide seat, and the other end of the second return spring is fixedly connected to the locking plate.

[0010] Preferably, a guide rail is fixedly connected to the upper end of the base, a slider is slidably connected inside the guide rail, and anti-detachment baffles are fixedly connected to both ends of the guide rail.

[0011] Preferably, the rear end of the slider is provided with a connecting rod that is fixedly connected to the measuring seat, the upper end of the connecting rod is fixedly connected to a pointer, and the scale is set on the upper end of the guide rail.

[0012] Preferably, the measuring seat moves laterally via a horizontal movement control component, which includes a double-ended ball screw and a motor. A drive gear is mounted on the outside of the motor output shaft, and a driven gear that meshes with the drive gear is mounted on the outside of the double-ended ball screw. A screw pair is symmetrically distributed on the outside of the double-ended ball screw, and the measuring seat is fixedly connected to the upper end of the screw pair.

[0013] Preferably, support legs are fixedly connected to the four corners of the lower end of the base, and adjustable feet are provided at the lower end of the support legs. Anti-slip pads are fixedly connected to the lower end of the adjustable feet. A display screen is installed on the rear side of the upper end of the base, and the display screen is electrically connected to the infrared receiver and the infrared transmitter.

[0014] The beneficial effects of this utility model are as follows: The automatic lateral movement of the measuring seat eliminates the need for manual operation, significantly shortening measurement time and achieving high-efficiency measurement, thus effectively improving production efficiency. The signal transmission from the infrared transmitter and receiver serves as an auxiliary judgment basis, accurately determining the measurement position. Combined with the scale reading and the fixed positional relationship between the measuring rod and the measuring seat, the diameter of the needle roller can be accurately calculated, reducing human error and making the measurement results more reliable. The device has a simple and reasonable structure, with ingenious component design, eliminating complex automated parts and expensive sensors, thus reducing manufacturing costs. It is also easy to maintain and repair. Furthermore, the device has low environmental requirements and can operate stably in general production workshop environments, without being strictly limited by temperature, humidity, or other conditions, making it more widely applicable. In addition, the design of the guiding and positioning mechanisms further ensures the stability and accuracy of the measurement. The guide seat can be raised and lowered to accommodate needle rollers of different sizes, and the soft pad of the positioning mechanism protects the needle roller and ensures reliable clamping. These designs enable the device to guarantee measurement accuracy while also possessing advantages such as high efficiency, low cost, and ease of use. Attached Figure Description

[0015] Figure 1 The diagram shown is a first three-dimensional structural schematic of the needle roller diameter testing device of this utility model;

[0016] Figure 2 The diagram shown is a three-dimensional cross-sectional view of the needle roller diameter testing device of this utility model.

[0017] Figure 3 The diagram shown is a three-dimensional structural schematic of the guide mechanism and positioning mechanism in the needle roller diameter testing device of this utility model.

[0018] Figure 4 The diagram shown is a three-dimensional structural schematic of the horizontal movement control component and the measuring seat in the needle roller diameter testing device of this utility model.

[0019] Explanation of reference numerals in the attached diagram: 1. Base; 2. Measuring platform; 3. Measuring seat; 4. Measuring rod; 5. Scale; 6. Infrared receiver; 7. Infrared transmitter; 81. Threaded column; 82. Guide seat; 83. Adjusting nut; 84. First return spring; 91. Locking rod; 92. Locking plate; 93. Soft pad; 94. Second return spring; 10. Guide rail; 11. Slider; 12. Anti-detachment baffle; 14. Connecting rod; 15. Pointer; 161. Double-ended ball screw; 162. Motor; 163. Drive gear; 164. Driven gear; 165. Screw pair; 17. Support leg; 18. Adjustable foot cup; 19. Anti-slip pad; 20. Display screen. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Please see Figures 1-4 This utility model provides an embodiment of a needle roller diameter testing device, including a base 1, a measuring platform 2, and a scale 5. The measuring platform 2 is fixedly connected to the middle of the upper end of the base 1. A measuring seat 3, symmetrically distributed about the left and right sides of the measuring platform 2 and movable laterally, is arranged above the base 1. A measuring rod 4 is fixedly connected to the upper end of the measuring seat 3. An infrared emitter 7 is fixedly connected to the end of the measuring seat 3 away from the measuring platform 2. Infrared receivers 6, symmetrically distributed about the left and right sides, are fixedly connected to the upper end of the base 1. The light emission directions of the infrared receivers 6 and the infrared emitter 7 are aligned. A guiding mechanism is provided at the upper end of the base 1. Both the measuring platform 2 and the measuring platform 2 are equipped with positioning mechanisms. The guiding mechanism includes four threaded posts 81, which are evenly arranged around the outside of the measuring platform 2. The threaded posts 81 are fixedly connected to the base 1. The four threaded posts 81 are provided with liftable guide seats 82 on the outside of the four threaded posts 81. The upper outer side of the threaded post 81 is threaded with an adjusting nut 83. The lower outer side of the threaded post 81 is sleeved with a first return spring 84. The positioning mechanism includes a locking rod 91. The outer end of the locking rod 91 is fixedly connected with a locking plate 92. The inner end of the locking rod 91 is fixedly connected with a soft pad 93. The outer side of the locking rod 91 is sleeved with a second return spring 94.

[0022] Please see Figures 3-4In this embodiment, the first reset spring 84 is fixedly connected to the guide seat 82 and the base 1. The guide seat 82 and the measuring platform 2 are aligned vertically. The measuring platform 2 has a cylindrical structure. A circular groove is provided in the center of the measuring platform 2. The diameter of the groove is larger than the maximum diameter of the needle roller to be measured. Small holes are evenly distributed at the bottom of the groove. The locking rod 91 is inserted into the measuring platform 2 and the guide seat 82. There are no less than 3 locking rods 91 in the measuring platform 2 and the guide seat 82. One end of the second reset spring 94 is fixedly connected to the measuring platform 2 and the guide seat 82. The other end of the second reset spring 94 is fixedly connected to the locking plate 92. A guide rail 10 is fixedly connected to the upper end of the base 1. A slider 11 is slidably connected in the guide rail 10. Anti-detachment baffles 12 are fixedly connected to both ends of the guide rail 10. A connecting rod 14 fixedly connected to the measuring seat 3 is provided at the rear end of the slider 11. A pointer 15 is fixedly connected to the upper end of the connecting rod 14. A scale 5 is provided at the upper end of the guide rail 10.

[0023] Please see Figure 1 and Figure 4 In this embodiment, the measuring seat 3 moves laterally via a horizontal movement control component. The horizontal movement control component includes a double-ended ball screw 161 and a motor 162. A drive gear 163 is mounted on the outer side of the output shaft of the motor 162. A driven gear 164, which meshes with the drive gear 163, is mounted on the outer side of the double-ended ball screw 161. A screw pair 165 is symmetrically distributed on the outer side of the double-ended ball screw 161. The measuring seat 3 is fixedly connected to the upper end of the screw pair 165. Support legs 17 are fixedly connected to the four corners of the lower end of the base 1. Adjustable feet 18 are provided at the lower end of the support legs 17. Anti-slip pads 19 are fixedly connected to the lower end of the adjustable feet 18. A display screen 20 is mounted on the rear side of the upper end of the base 1. The display screen 20 is electrically connected to the infrared receiver 6 and the infrared transmitter 7.

[0024] During operation, based on the approximate size of the needle roller to be measured, the operator rotates the adjusting nut 83 to move the guide seat 82 up and down on the threaded post 81, adjusting the guide seat 82 to a suitable height. The first return spring 84 is fixedly connected to the guide seat 82 and the base 1, playing a buffering and auxiliary positioning role during the movement of the guide seat 82, ensuring that the guide seat 82 moves smoothly. After adjustment, the position of the guide seat 82 is fixed, and the guide seat 82 and the measuring table 2 are aligned vertically, providing accurate guidance for subsequent measurements.

[0025] The operator pulls the locking plate 92 outward, causing the locking rod 91 to move outward. At this time, one end of the second return spring 94 is fixedly connected to the measuring table 2 and the guide seat 82, and the other end is fixedly connected to the locking plate 92. The second return spring 94 is compressed, and the soft pad 93 at the inner end of the locking rod 91 moves away from the measuring table 2. The needle to be tested is placed in the center of the measuring table 2. The locking plate 92 is slowly released. Under the elastic force of the second return spring 94, the locking rod 91 moves inward, and the soft pad 93 gradually approaches the needle, finally gently clamping the needle. The soft pad 93 plays a role in protecting the needle.

[0026] When motor 162 is started, the drive gear 163 mounted on the outer side of the output shaft of motor 162 begins to rotate, driving the driven gear 164 meshing with it to rotate. The driven gear 164 is mounted on the outer side of the double-ended ball screw 161, thereby driving the double-ended ball screw 161 to rotate. Symmetrically distributed screw pairs 165 are provided on the outer side of the double-ended ball screw 161. The upper end of the screw pairs 165 is fixedly connected to the measuring seat 3. Driven by the double-ended ball screw 161, the measuring seat 3 moves laterally towards the measuring table 2. The upper end of the base 1 is fixedly connected to the guide rail 10. A slider 11 is slidably connected inside the guide rail 10. When the measuring seat 3 moves, it drives the slider 11 to slide inside the guide rail 10. The anti-detachment baffle 12 prevents the slider 11 from detaching from the guide rail 10. The measuring rod 4 at the upper end of the measuring seat 3 moves closer to the needle roller. As the measuring seat 3 moves, the pointer 15 indicates the corresponding position on the scale 5. The moving distance of the measuring seat 3 is read through the scale 5. Combined with the fixed position relationship between the measuring rod 4 and the measuring seat 3, the diameter of the needle roller is calculated. At the same time, the signal transmission status of the infrared transmitter 7 and the infrared receiver 6 can also be used as an auxiliary judgment basis.

[0027] After the measurement is completed, the operator pulls the locking plate 92 outward again to open the positioning mechanism, so that the soft pad 93 is away from the needle roller. Then, the needle roller is carefully removed from the measuring table 2. The adjustable foot cup 18 at the lower end of the support leg 17 can be used to level the device and prevent slippage.

[0028] Through the above steps, the automatic lateral movement of the measuring base 3 eliminates the need for manual operation, significantly shortening measurement time and achieving efficient measurement, thus effectively improving production efficiency. The signal transmission between the infrared transmitter 7 and the infrared receiver 6 serves as an auxiliary judgment basis, accurately determining the measurement position. Combined with the reading of the scale 5 and the fixed positional relationship between the measuring rod 4 and the measuring base 3, the diameter of the needle roller can be accurately calculated, reducing human error and making the measurement results more reliable. The device has a simple and reasonable structure, ingenious component design, and avoids complex automated parts and expensive sensors, reducing manufacturing costs. It is also easy to maintain and repair. Furthermore, the device has low requirements for the operating environment and can be used in general environments. It can operate stably in the production workshop environment, without being strictly limited by temperature, humidity and other conditions, and has a wider range of applications. In addition, the design of the guiding mechanism and positioning mechanism further ensures the stability and accuracy of the measurement. The guide seat 82 can be raised and lowered to accommodate needle rollers of different sizes, and the soft pad 93 of the positioning mechanism can protect the needle rollers and clamp them reliably. These designs enable the device to ensure measurement accuracy while also having the advantages of high efficiency, low cost and ease of use. This solves the problems of existing testing devices that mostly rely on manual operation, have slow measurement speed and are easily affected by human factors, and some automated measuring equipment, although with high measurement accuracy, has a complex structure, high cost and strict requirements for the operating environment.

[0029] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A needle roller diameter testing device, comprising a base (1), characterized in that: It also includes a measuring platform (2) and a scale (5). The measuring platform (2) is fixedly connected to the middle of the upper end of the base (1). A measuring seat (3) is set above the base (1) and is symmetrically distributed about the left and right sides of the measuring platform (2) and can move laterally. A measuring rod (4) is fixedly connected to the upper end of the measuring seat (3). An infrared emitter (7) is fixedly connected to the end of the measuring seat (3) away from the measuring platform (2). An infrared receiver (6) is fixedly connected to the upper end of the base (1) and is symmetrically distributed about the left and right sides. The infrared receiver (6) and the infrared emitter (7) are aligned in the direction of light emission. A guide mechanism is set at the upper end of the base (1). A positioning mechanism is set inside both the guide mechanism and the measuring platform (2). The positioning mechanism includes four threaded posts (81), which are evenly arranged around the outside of the measuring platform (2). The threaded posts (81) are fixedly connected to the base (1). A liftable guide seat (82) is provided on the outside of the four threaded posts (81). An adjusting nut (83) is threadedly connected to the upper outer side of the threaded post (81). A first return spring (84) is sleeved on the lower outer side of the threaded post (81). The positioning mechanism includes a locking rod (91). A locking plate (92) is fixedly connected to the outer end of the locking rod (91). A soft pad (93) is fixedly connected to the inner end of the locking rod (91). A second return spring (94) is sleeved on the outer side of the locking rod (91).

2. The needle roller diameter testing device according to claim 1, characterized in that: The first reset spring (84) is fixedly connected to the guide seat (82) and the base (1). The guide seat (82) and the measuring table (2) are aligned vertically. The measuring table (2) is a cylindrical structure. A circular groove is provided in the center of the measuring table (2). The diameter of the groove is larger than the maximum diameter of the needle roller to be measured. Small holes are evenly distributed at the bottom of the groove.

3. The needle roller diameter testing device according to claim 1, characterized in that: The locking rod (91) is inserted into the measuring table (2) and the guide seat (82). There are no less than 3 locking rods (91) in the measuring table (2) and the guide seat (82). One end of the second return spring (94) is fixedly connected to the measuring table (2) and the guide seat (82), and the other end of the second return spring (94) is fixedly connected to the locking plate (92).

4. The needle roller diameter testing device according to claim 1, characterized in that: The upper end of the base (1) is fixedly connected to a guide rail (10), and a slider (11) is slidably connected inside the guide rail (10). Anti-detachment baffles (12) are fixedly connected to both the left and right ends of the guide rail (10).

5. The needle roller diameter testing device according to claim 4, characterized in that: The slider (11) has a connecting rod (14) fixedly connected to the measuring seat (3) at its rear end. A pointer (15) is fixedly connected to the upper end of the connecting rod (14), and a scale (5) is set on the upper end of the guide rail (10).

6. The needle roller diameter testing device according to claim 1, characterized in that: The measuring seat (3) moves laterally via a horizontal movement control component. The horizontal movement control component includes a double-ended ball screw (161) and a motor (162). A drive gear (163) is mounted on the outside of the output shaft of the motor (162). A driven gear (164) that meshes with the drive gear (163) is mounted on the outside of the double-ended ball screw (161). A screw pair (165) symmetrically distributed on the outside of the double-ended ball screw (161) is provided. The measuring seat (3) is fixedly connected to the upper end of the screw pair (165).

7. The needle roller diameter testing device according to claim 1, characterized in that: The base (1) is fixedly connected to four corners of the bottom. The lower end of the support leg (17) is provided with an adjustable foot cup (18). The lower end of the adjustable foot cup (18) is fixedly connected with an anti-slip pad (19). The upper rear side of the base (1) is equipped with a display screen (20). The display screen (20) is electrically connected to the infrared receiver (6) and the infrared transmitter (7).

Images