Lead screw durability testing mechanism

Abstract

The utility model discloses a lead screw durability testing mechanism which comprises a base, a detection mechanism arranged on the base and a transmission mechanism arranged on the base. The transmission mechanism comprises a transmission base and a transmission assembly arranged on the transmission base. The transmission base is arranged on the base, a plurality of clamping pieces are arranged on the side face of the transmission base, and the clamping pieces are used for fixing the transmission base; the detection mechanism comprises a fixing assembly and a detection assembly arranged on one side of the fixing assembly. The detection assembly and the fixing assembly are located on the same axis. The detection assembly is used for pressing and detecting the to-be-detected product; the base comprises a base body; the stability and the durability of the product in a high-speed running state are further tested through a high-rotating-speed test driven by the transmission motor, and the comprehensiveness and the accuracy of performance evaluation of the product in an extreme working environment are ensured.

Description

Technical Field

[0001] This utility model relates to the motion durability testing of finished lead screws, and more particularly to a lead screw durability testing mechanism. Background Technology

[0002] In the field of mechanical transmission, the lead screw, as a key transmission component, directly affects the stability and service life of the entire mechanical system. However, in practical applications, lead screws often need to withstand high loads, high speeds, and complex and variable working conditions. These extreme conditions place extremely high demands on their durability. Traditional lead screw durability testing methods are often limited to single static or dynamic tests, which cannot comprehensively and accurately evaluate the performance of the lead screw under complex working conditions, and are even less likely to detect potential design defects or manufacturing errors.

[0003] To overcome this technical challenge, the industry urgently needs a lead screw durability testing mechanism capable of accurately simulating actual product usage conditions, especially conducting in-depth testing under extreme conditions of high speed, high pressure, and high speed. This testing mechanism needs to comprehensively evaluate the performance of the lead screw under extreme working environments, including its pressure resistance, stability at high speeds, and durability after prolonged use. Simultaneously, the testing mechanism should also possess precise data capture and recording capabilities to provide detailed data support for product performance optimization and fault prevention.

[0004] The prior art utility model patent with application number 202420074551.1 discloses a multifunctional lead screw pair testing device, including a linkage platform assembly, a main testing assembly, and an auxiliary testing assembly. The linkage platform assembly includes a slide rail, a slide table, a displacement measuring device, a tension / compression measuring device, and a nut mounting base. The tension / compression measuring device is used to measure the force between the nut mounting base and the slide table. The main testing assembly includes a main motor, a first torque measuring device, and a rod shaft mounting base. The first torque measuring device is used to measure the torque between the rod shaft mounting base and the main motor. The auxiliary testing assembly includes an auxiliary motor, a second torque measuring device, an auxiliary screw, and an auxiliary nut. The second torque measuring device is connected to the auxiliary motor and is used to measure the torque between the auxiliary screw and the auxiliary motor.

[0005] Therefore, it is necessary to improve an existing screw durability testing mechanism to solve the above problems. Summary of the Invention

[0006] This invention overcomes the shortcomings of the prior art and provides a screw durability testing mechanism, aiming to solve the problems in the prior art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a screw durability testing mechanism, comprising: a base, a testing mechanism disposed on the base, and a transmission mechanism disposed on the base;

[0008] The transmission mechanism comprises a transmission base and a transmission assembly arranged on the transmission base; the transmission base is arranged on the base, and a plurality of clamping pieces are arranged on the side of the transmission base, which are used for fixing the transmission base;

[0009] The detection mechanism comprises a fixing assembly and a detection assembly arranged on one side of the fixing assembly; the detection assembly and the fixing assembly are located on the same axis; the detection assembly is used for pressing and detecting the product to be detected;

[0010] The base comprises a base body and a moving assembly arranged at the bottom of the base body; a plurality of sliding rails are arranged on the base body, which are used for the fixing assembly to move to the corresponding position for detection according to the length of the product to be detected.

[0011] In a preferred embodiment of the utility model, the transmission assembly comprises a transmission motor and a pulley mechanism connected with the transmission motor; the transmission motor is arranged on the transmission base, and the pulley mechanism is used for transmitting the fixing assembly.

[0012] In a preferred embodiment of the utility model, the clamping piece comprises a clamping plate and an extruding piece arranged on the clamping plate; the clamping plate is arranged in an L shape in cross section, the clamping plate and the base body form a clamping groove, the clamping groove can fix the transmission base, and the extruding piece is arranged on the clamping groove to extrude and fix the transmission base.

[0013] In a preferred embodiment of the utility model, the fixing assembly comprises a fixing disc, a fixing seat arranged on the fixing disc, and a rotating part arranged on one side of the fixing seat; the rotating part is used for assisting the rotation of the product to be detected, and the rotating part is arranged on the sliding rail.

[0014] In a preferred embodiment of the utility model, the rotating part comprises a rotating seat, a fixing piece and a rotating piece arranged on the rotating seat; the fixing piece and the rotating piece are connected through a universal joint.

[0015] In a preferred embodiment of the utility model, a rotating ring is rotatably connected to the rotating seat, the rotating ring is connected to the rotating piece in the circumferential direction, the rotating piece and the fixing piece are arranged in a nested mode, and the universal joint is rotatably connected to the rotating piece and the fixing piece at both ends.

[0016] In a preferred embodiment of the utility model, the rotating ring is provided with only one open end, and a plurality of key grooves are arranged in the open end of the rotating ring.

[0017] In a preferred embodiment of the utility model, the fixing disc is rotatably connected to the fixing seat, a plurality of key grooves are arranged in the fixing disc, and the fixing disc is connected to the pulley mechanism.

[0018] In a preferred embodiment of the utility model, the moving assembly comprises a plurality of universal wheels, and the universal wheels are fixedly connected to the bottom of the base body.

[0019] In a preferred embodiment of the utility model, the detection assembly comprises a detection seat, a hydraulic cylinder arranged on the detection seat, and an extrusion plate connected with the hydraulic cylinder; the detection seat is provided with a sliding rod, the sliding rod is in sliding connection with the extrusion plate, and the extrusion plate is provided with a pressure sensor.

[0020] The utility model solves the defects in the background art, and has the following beneficial effects:

[0021] (1) the utility model provides a lead screw durability test mechanism, through the close combination of transmission motor and pulley mechanism, ensure that the to be detected lead screw can keep the running state of stable and no vibration when high speed rotates in two directions, simultaneously, the fixed assembly in the detection mechanism is connected through the precise key groove and key, effectively prevent the to be detected lead screw from deviating or shaking in the testing process, further improve the stability of the test, moreover, the rotating part in the detection mechanism adopts universal coupling connection, can compensate the slight deviation caused by the incomplete centering of the to be detected product or manufacturing error, thereby ensure the stability and stability of rotation.

[0022] (2) the utility model provides a lead screw durability test mechanism, through the deep test of the to be detected product under the extreme condition of high speed, high pressure and high speed, accurately simulates the actual use state of the product, through the accurate control of the hydraulic cylinder to the extrusion plate, realizes the high pressure test to the product, simulates the huge pressure encountered by the product in actual operation, simultaneously, the high speed test driven by the transmission motor, further tests the stability and durability of the product under the high speed running state, not only ensure the comprehensiveness and accuracy of the performance evaluation of the product under the limit working environment, but also help to find the potential problems caused by long time use or high strength load in advance. BRIEF DESCRIPTION OF DRAWINGS

[0023] The utility model will be further described in connection with the drawings and examples;

[0024] Figure 1 It is the perspective structural diagram of the preferred embodiment of the utility model;

[0025] Figure 2 It is the fixed assembly structure schematic view of the preferred embodiment of the utility model;

[0026] Figure 3 It is the fixed assembly structure schematic view of the preferred embodiment of the utility model; Figure 1 The enlarged structure schematic view of A part of it;

[0027] In the figure: 1, base; 10, base body; 11, universal wheel; 12, slide rail; 2, detection mechanism; 20, fixing assembly; 201, fixing disc; 202, fixing seat; 203, rotating seat; 204, fixing piece; 205, rotating piece; 206, universal coupling; 207, rotating ring; 21, detection assembly; 210, detection seat; 211, hydraulic cylinder; 212, extrusion plate; 3, transmission mechanism; 30, transmission base; 31, transmission assembly; 311, transmission motor; 312, pulley mechanism; 32, clamping piece; 321, clamping plate; 322, extrusion piece. DETAILED DESCRIPTION

[0028] The utility model will be explained in further detail in combination with the drawings and examples, these drawings are all simplified schematic diagram, only with the schematic way the basic structure of the utility model is explained, therefore it only shows the related structure of the utility model.

[0029] As shown in the figure, a screw rod durability test mechanism, including: base 1, detection mechanism 2 set up on base 1 and transmission mechanism 3 set up on base 1,

[0030] Transmission mechanism 3 includes: transmission base 30 and transmission assembly 31 set up on transmission base 30, transmission base 30 is set up on base 1, and a plurality of clamping pieces 32 are set up on the side of transmission base 30, and the clamping pieces 32 are used to fix transmission base 30,

[0031] In the utility model, transmission assembly 31 includes transmission motor 311 and pulley mechanism with transmission motor 311, transmission motor 311 is set up on transmission base 30, and the pulley mechanism is used to drive fixing assembly 20, clamping piece 32 includes clamping plate 321 and extrusion piece 322 set up on clamping plate 321, clamping plate 321 is set up in L shape in cross section, and clamping plate 321 forms clamping groove with base body 10, the clamping groove can fix transmission base 30, and extrusion piece 322 is set up on the clamping groove to extrude and fix transmission base 30.

[0032] It should be noted that the transmission mechanism 3 is mainly used to drive the high-speed rotation of the product to be detected in the forward and reverse directions, and is provided with a transmission base 30, a transmission assembly 31 and a clamping piece 32. The transmission base 30 is placed on the base 1, the clamping piece 32 is arranged on both sides of the transmission base 30, and is used for fixing the transmission base 30 to facilitate the later disassembly, maintenance and repair. The clamping piece 32 is arranged on the front and rear sides of the transmission base 30, a plurality of threaded holes for fixing are formed on the base 1, the clamping plate 321 of the clamping piece 32 is arranged in an L shape, the vertical part of the L-shaped clamping plate 321 is arranged in parallel with the base 10, and the clamping plate 321 and the base 10 form a clamping groove. Two clamping plates 321 and the base 10 form two opposite clamping grooves. The transmission base 30 is placed in the clamping groove. A pressing hole is formed in the vertical part of the L-shaped clamping plate 321 opposite the clamping groove. The pressing hole is a threaded hole. The pressing piece 322 is arranged in an L shape, and the vertical part is a threaded rod. Rotating the pressing piece 322 makes the threaded rod of the vertical part engage with the pressing hole, and forms a pressing on the upper part of the transmission base 30, so that it is fixed on the base 10. A threaded hole identical to the threaded hole on the base 10 is formed at the coincident position of the vertical part and the horizontal part of the clamping plate 321, and the clamping plate 321 is fixed on the base 10 by a bolt.

[0033] The transmission motor 311 is fixedly connected to the transmission base 30. The belt wheel mechanism includes two synchronous wheels and a synchronous belt engaged with the synchronous wheels. The two synchronous wheels are fixedly connected with the transmission motor 311 and the fixed disc 201 respectively. In this way, the transmission motor 311 is rotated to drive the belt wheel mechanism to rotate, so as to drive the fixed disc 201 to rotate.

[0034] The detection mechanism 2 includes a fixed assembly 20 and a detection assembly 21 arranged on one side of the fixed assembly 20. The detection assembly 21 is located on the same axis as the fixed assembly 20. The detection assembly 21 is used for pressing and detecting the product to be detected.

[0035] In the utility model, the fixed assembly 20 includes a fixed disc 201, a fixed seat 202 arranged on the fixed disc 201, and a rotating part arranged on one side of the fixed seat 202. The rotating part is used for assisting the rotation of the product to be detected. The rotating part is arranged on the slide rail 12. The fixed disc 201 is rotatably connected with the fixed seat 202. A plurality of key grooves are formed in the fixed disc 201. The fixed disc 201 is connected with the belt wheel mechanism.

[0036] It should be noted that the fixed disc 201 is rotatably connected with the fixed seat 202. The fixed disc 201 is fixedly connected with the synchronous wheel, and the center of the fixed disc 201 and the synchronous wheel is located on the same axis. A fixed hole for placing the product to be detected is formed at the center of the fixed disc 201 and the synchronous wheel. A plurality of key grooves are uniformly formed on the inner side of the fixed hole. Key grooves are also formed on the product to be detected. The two key grooves are connected by a key and are in transmission.

[0037] The utility model discloses, rotating part includes rotating seat 203, sets up the fixing piece 204 and rotating part 205 on rotating seat 203, the fixing piece 204 is connected with rotating part 205 through universal coupling 206 between, rotating ring 207 is rotationally connected on rotating seat 203, and rotating ring 207 is connected on the circumference with rotating part 205, and rotating part 205 is nested with the fixing piece 204, and the both ends of universal coupling 206 are rotationally connected with rotating part 205 and fixing piece 204 respectively, rotating ring 207 only sets up one end opening, and a plurality of key slots are formed in the one end opening of rotating ring 207.

[0038] Need to explain, rotating ring 207 is rotationally connected on rotating seat 203, and rotating ring 207 is circularly arranged, and the outer side of the circular ring of rotating ring 207 is connected with rotating seat 203, and the inner side of rotating ring 207 is provided with a key slot for placing the product to be detected, and rotating ring 207 is cup-shaped and has only one opening, and the opening is directed to the direction of fixing disc 201, and the width of rotating ring 207 is greater than the thickness of rotating seat 203, and the outer side of the circumference of rotating ring 207 is fixedly connected with rotating part 205 on the part of rotating seat 203, and the fixing piece 204 is composed of three straight rods and is arranged in the shape of n, and rotating part 205 is located in the middle of the groove of n-shaped fixing piece 204, and the both ends of rotating part 205 are fixedly connected with rotating seat 203, and the middle part of rotating part 205 is connected with fixing piece 204 through universal coupling 206, and universal coupling 206 can transmit torque and rotary motion, and at the same time, it allows a certain angular deviation between the two connected parts, so as to compensate for the slight deviation caused by the incomplete centering of the product to be detected or the manufacturing error, thereby ensuring the stability and stability of rotation.

[0039] In work, the product to be detected is provided with a key slot at the end point of one end and the middle part, and a key for transmitting power is arranged in the key slot, the transmission motor 311 is a servo motor capable of high-speed rotation in two directions of forward and reverse, the key is placed in the key slot of the product to be detected between rotations, the product to be detected is placed into the fixed hole from the fixed hole of the rotating part away from the fixed disc 201, and is pushed into the rotating ring 207 at one end of the product to be detected, and the transmission motor 311 starts high-speed rotation in two directions of forward and reverse respectively, and detects the product to be detected.

[0040] In the utility model, the detection assembly 21 includes a detection seat 210, a hydraulic cylinder 211 arranged on the detection seat 210, and an extrusion plate 212 connected with the hydraulic cylinder 211, and the detection seat 210 is provided with a sliding rod, and the sliding rod is slidably connected with the extrusion plate 212, and the extrusion plate is provided with a pressure sensor

[0041] It should be noted that the hydraulic cylinder 211 is fixedly connected to the detection seat 210, the both ends of the slide rod are fixedly connected to the detection seat 210 and the fixed seat 202, the extrusion plate 212 is slidably connected to the slide rod, the extrusion plate is fixedly connected to the output shaft of the hydraulic cylinder 211, with the extension and contraction of the output shaft of the hydraulic cylinder 211, the extrusion plate 212 reciprocates on the slide rod, and the pressure sensor is arranged on the extrusion plate 212.

[0042] In work, the product to be detected is fixed on the fixing disc 201 by artificial, the hydraulic cylinder 211 is operated, the extrusion plate 212 is pushed, the product to be detected is pressed by the extrusion plate 212, the product to be detected is driven by the transmission motor 311 to rotate back and forth at high speed, so that the actual use state of the product is simulated, and the product to be detected is tested under high pressure and high speed.

[0043] The base 1 comprises a base body 10 and a moving assembly arranged at the bottom of the base body 10, a plurality of slide rails 12 are arranged on the base body 10 and used for fixing the fixing assembly 20 to move to a corresponding position for detection according to the length of the product to be detected, and the moving assembly comprises a plurality of universal wheels 11 fixedly connected to the bottom of the base body 10.

[0044] It should be noted that the universal wheels 11 are arranged on the base body 10 and used for facilitating the movement of the base body 10, the slide rails 12 are arranged at the bottom of the fixed seat 202, connecting holes are arranged on the slide rails 12, the same connecting holes are arranged at the bottom of the fixed seat 202, so that the fixed seat 202 can move to a position according to the length of the product to be detected, so as to adapt to the length of the product to be detected, and the display is further arranged on the base body 10 and connected with the transmission motor 311 and the hydraulic cylinder 211, and test data are displayed on the display and recorded in real time during the test.

[0045] In use, the screw to be detected is placed in the fixing hole of the fixing disc 201 and fixed through the key groove and the key. Then, the position of the fixing assembly 20 in the detection mechanism 2 is adjusted according to the length of the screw to be detected, so as to ensure the accuracy of the test. Then, the transmission motor 311 and the hydraulic cylinder 211 are started, so that the screw to be detected rotates at high speed in two directions and is pressed by the extrusion plate 212 at the same time. The durability of the screw to be detected is evaluated by monitoring the data of the pressure sensor and the transmission motor 311.

[0046] According to the ideal embodiments of the utility model, the related personnel can make various changes and modifications without deviating from the technical thought of the utility model. The technical scope of the utility model is not limited to the content in the specification, and must be determined according to the scope of claims.

Claims

1. A ball screw durability testing mechanism, comprising: A base (1), a detection mechanism (2) arranged on the base (1), and a transmission mechanism (3) arranged on the base (1), characterized in that The transmission mechanism (3) comprises a transmission base (30) and a transmission assembly (31) arranged on the transmission base (30); the transmission base (30) is arranged on the base (1), and a plurality of clamping pieces (32) are arranged on the side of the transmission base (30), and the clamping pieces (32) are used for fixing the transmission base (30); The detection mechanism (2) comprises a fixing assembly (20) and a detection assembly (21) arranged on one side of the fixing assembly (20); the detection assembly (21) and the fixing assembly (20) are located on the same axis; the detection assembly (21) is used for pressing and detecting the product to be detected; The base (1) comprises a base body (10) and a moving assembly arranged at the bottom of the base body (10); a plurality of sliding rails (12) are arranged on the base body (10), and the sliding rails (12) are used for moving the fixing assembly (20) to the corresponding position for detection according to the length of the product to be detected.

2. The mechanism of claim 1, wherein: The transmission assembly (31) comprises a transmission motor (311) and a pulley mechanism connected with the transmission motor (311); the transmission motor (311) is arranged on the transmission base (30), and the pulley mechanism is used for transmitting the fixing assembly (20).

3. The mechanism of claim 1, wherein: The clamping piece (32) comprises a clamping plate (321) and a pressing piece (322) arranged on the clamping plate (321); the clamping plate (321) is arranged in an L-shaped cross section, the clamping plate (321) and the base body (10) form a clamping groove, the clamping groove can fix the transmission base (30), and the pressing piece (322) is arranged on the clamping groove to press and fix the transmission base (30).

4. The mechanism of claim 1, wherein: The fixing assembly (20) comprises a fixing disc (201), a fixing seat (202) arranged on the fixing disc (201), and a rotating part arranged on one side of the fixing seat (202); the rotating part is used for assisting the rotation of the product to be detected, and the rotating part is arranged on the sliding rail (12).

5. The mechanism of claim 4, wherein: The rotating part comprises a rotating seat (203), a fixing piece (204) and a rotating piece (205) arranged on the rotating seat (203); the fixing piece (204) and the rotating piece (205) are connected through a universal joint (206).

6. The mechanism of claim 5, wherein: The rotating seat (203) is rotatably connected with a rotating ring (207), the rotating ring (207) is connected with the rotating piece (205) on the circumference, the rotating piece (205) and the fixing piece (204) are arranged in a nested manner, and the universal joint (206) is rotatably connected with the rotating piece (205) and the fixing piece (204) at both ends.

7. The mechanism of claim 6, wherein: The rotating ring (207) is only provided with one open end, and a plurality of key grooves are formed in the open end of the rotating ring (207).

8. The mechanism of claim 4, wherein: The fixed disc (201) is rotationally connected with the fixed seat (202), a plurality of key grooves are formed in the fixed disc (201), and the fixed disc (201) is connected with a belt wheel mechanism.

9. The mechanism of claim 1, wherein: The moving assembly comprises a plurality of universal wheels (11), and the universal wheels (11) are fixedly connected to the bottom of the base body (10).

10. The mechanism of claim 1, wherein: The detection assembly (21) comprises a detection seat (210), a hydraulic cylinder (211) arranged on the detection seat (210), and an extrusion plate (212) connected with the hydraulic cylinder (211); a sliding rod is arranged on the detection seat (210) and is in sliding connection with the extrusion plate (212); and a pressure sensor is arranged on the extrusion plate.

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