Steering lead screw friction force detection device

Abstract

The invention relates to the technical field of lead screw detection, and discloses a steering lead screw friction force detection device, which comprises a bottom plate, the top of the bottom plate is rotatably provided with a rotating seat, the top of the rotating seat is provided with a rotating plate, one side of the top of the rotating plate is provided with a detection structure, and one side of the top of the bottom plate is provided with a control structure. The top of the rotating plate is provided with a screw rod, the screw rod is provided with a ball sliding block, the top of the rotating plate is provided with a sliding groove, and one side of the rotating plate is provided with a handle. The device is provided with the rotating plate and the detection structure, and the friction force of the sliding block on the screw rod and errors generated during movement can be detected through cooperation of the rotating plate and the detection structure; the ball sliding block and the ball sliding block are matched at the same time, equipment for detecting friction force through the spring can return to zero again for secondary detection by rotating the rotating plate under the condition that the ball sliding block does not move, secondary detection can be conducted without moving the lead screw, the detection result is more accurate, and the detection accuracy is improved.

Description

Technical Field

[0001] The invention relates to the technical field of screw rod detection, in particular to a steering screw friction force detection device. Background Art

[0002] In the new patent application with application publication number CN112781872A, it includes a workbench, on which a screw drive mechanism, a friction force detection mechanism, a screw clamping mechanism and a screw nut positioning mechanism are arranged in sequence, the friction force detection mechanism is respectively connected to the screw drive mechanism and the screw clamping mechanism, the screw drive mechanism includes a servo electric cylinder and a fixed bracket, the fixed bracket is fixedly arranged on the workbench, the servo electric cylinder is fixedly arranged on the fixed bracket, and the piston rod of the servo electric cylinder is connected to the friction force detection mechanism, and the cylinder body of the servo electric cylinder is fixedly arranged A pull rod ruler is provided, the pull rod of the pull rod ruler is fixedly connected to the piston rod of the servo electric cylinder, the friction force detection mechanism includes a push-pull force sensor, one end of the push-pull force sensor is fixedly connected to the end of the piston rod of the servo electric cylinder, and the other end of the push-pull force sensor is fixedly connected to the screw clamping mechanism. The advantages are: the friction force detection mechanism can quickly detect the friction resistance of the ball screw when it is working, and cooperate with the bracket position adjustment mechanism to make the distance between the friction force detection mechanism and the nut positioning mechanism adjustable, so that the detection device can detect ball screws of different lengths and has better adaptability.

[0003] In the prior art including the above-mentioned patents, multiple detection structures are added to ensure the diversity of detection. However, the number of mechanical structures increases, and the sources of errors increase, which is not conducive to the accuracy of detection. In addition, the inspection method cannot drive the screw and nut separately, and repeated inspections cannot be performed, thereby failing to effectively ensure the accuracy of detection. Summary of the invention

[0004] The problem to be solved by the present invention is that when a ball screw detects friction, a lot of results need to be superimposed in order to achieve detection diversity, which leads to a large error in the detection structure and is not accurate enough.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: a steering screw friction force detection device, comprising a bottom plate, a rotating seat is rotatably provided on the top of the bottom plate, a rotating plate is provided on the top of the rotating seat, a detection structure is provided on one side of the top of the rotating plate, a control structure is provided on one side of the top of the bottom plate, a screw rod is provided on the top of the rotating plate, a ball slider is provided on the screw rod, a slide groove is opened on the top of the rotating plate, and a handle is provided on one side of the rotating plate; The detection structure includes an auxiliary block, a slider is provided at the bottom of the auxiliary block, the slider is adapted to the slide groove, a moving block is rotatably provided at the top of the auxiliary block, a spring is provided on one side of the auxiliary block, a detector is provided on one side of the spring, the rotating plate can rotate with the rotating connection with the rotating seat as the center and synchronously control the auxiliary block to rotate in the slide groove through the spring, and the spring can switch the extension and contraction states through the rotation of the rotating plate.

[0006] Preferably, a rotating shaft is provided on one side of the movable block, an auxiliary rod is rotatably provided on one side of the rotating shaft, a micrometer is slidably provided on the auxiliary rod, and a plurality of connecting blocks are provided in a circular array around the movable block.

[0007] Preferably, a movable rod is slidably passed through the top of the connecting block, a top plate is provided on the top of the movable rod, a resistance bead is rotatably provided at the bottom of the movable rod, a torque spring is provided at the rotating position of the movable rod, and a scale mark is provided on the outer wall of the moving block, and the resistance bead is used in conjunction with the scale mark.

[0008] Preferably, a shell is provided on the top of the moving block, and opposing threaded rods are rotatably provided on the back side of the inner wall of the shell, a knob passes through the front side of the shell, and the back side of the knob is fixedly connected to the front side of the opposing threaded rod, and splints are provided on the front and rear sides of the opposing threaded rods, and an anti-slip pad is provided on the top of the front side of the splint.

[0009] Preferably, the control structure comprises a bracket, the top of which is in a hollow cylindrical shape, a pneumatic clamp is rotatably provided on the top of the bracket, and a plurality of movable blocks are slidably provided on one side of the pneumatic clamp in a circular array.

[0010] Preferably, a movable claw is slidably provided inside the movable block, and a bolt penetrates through the surface of the movable block, and the bolt can adjust the position of the movable claw.

[0011] Preferably, a driven wheel is provided on the other side of the pneumatic clamp, and a through groove is provided in the middle of the pneumatic clamp and the driven wheel.

[0012] Preferably, a block is slidably provided at the top of one side of the bracket, a control rod is provided on one side of the block, one side of the control rod passes through the bracket and extends to the outside of the bracket, and a friction wheel is provided on one side of the block.

[0013] Preferably, a motor is provided at the bottom of the bracket, a power wheel is provided on one side of the motor, a pulley group is provided on one side of the power wheel, and the top of the front side of the pulley group is fixedly connected to the back side of the friction wheel.

[0014] Compared with the prior art, the technical solution of the present invention has the following advantages: (1) A rotating plate and a detection structure are provided on the bottom plate. The two can cooperate to detect the friction force of the slider on the screw and the error generated during movement. The two can cooperate at the same time and can also rotate the rotating plate to allow the ball slider to reset the device that detects friction through the spring to zero for secondary detection without moving itself. The secondary detection can be performed without moving the screw, making the detection result more accurate and further improving the detection accuracy. The detection structure is also provided with a micrometer and a resistance bead. The micrometer can test the smoothness of the screw to see if there is any error. The resistance bead can cooperate with the movable rod to record the scale on the scale mark before the detection. After waiting for a full test to be completed, it can be seen whether the scale has changed. If there is a change, it is the maximum distance of the smoothness error of the ball slider. The user can see at a glance that there is no need to stare at the micrometer bit by bit. After knowing the maximum error, it can be quickly checked by the micrometer. The detection structure is also provided with a clamping claw, which can perform two-way detection by clamping different objects, one for the screw and the other for the ball slider; (2) A control structure is also provided on the bottom plate, which is used to control the movement of the screw or ball slider. A movable claw is provided on the pneumatic clamp, which can be freely adjusted according to the size of the clamped screw. The pneumatic clamp is divided into two driving modes. When clamping the screw, the motor can be used to control the overall rotation of the pneumatic clamp to control the ball screw to move forward and backward. When clamping the ball slider, the screw will pass through the through groove and match the friction wheel. The friction wheel is still driven by the motor. The friction wheel controls the screw to move left and right by cooperating with the screw, so as to achieve one machine with dual control, which saves more power source and is more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a right side schematic diagram of the bottom plate structure of the present invention; Figure 3 This is a schematic diagram of the structure of the rotating plate of the present invention; Figure 4 It is a bottom view schematic diagram of the rotating plate structure of the present invention; Figure 5 It is a schematic diagram of the detection structure of the present invention; Figure 6 It is a left schematic diagram of the detection structure of the present invention; Figure 7 This is a schematic diagram of the auxiliary block structure of the present invention; Figure 8 This is a schematic diagram of the resistance bead structure of the present invention; Fig. 9 It is a schematic diagram of the control structure of the present invention; Fig.10 It is a left side schematic diagram of the control structure of the present invention; Fig.11This is a schematic diagram of the friction wheel structure of the present invention; Fig.12 This is a schematic diagram of the power wheel structure of the present invention; Fig.13 It is a schematic diagram of the rotation of the spring structure of the present invention.

[0016] In the figure: 1. control structure; 101. bracket; 102. movable block; 103. movable claw; 104. driven wheel; 105. friction wheel; 106. clamping block; 107. pulley group; 108. through groove; 109. pneumatic clamping claw; 110. power wheel; 111. motor; 112. control rod; 2. bottom plate; 3. screw rod; 4. rotating plate; 5. ball slider; 6. detection structure; 601. auxiliary block; 602. top plate; 603. movable rod; 604. rotating shaft; 605. knob; 606. micrometer; 607. clamping plate; 608. housing; 609. moving block; 610. opposite threaded rod; 611. auxiliary rod; 612. connecting block; 613. resistance ball; 614. slider; 7. spring; 8. handle; 9. detector; 10. slide groove; 11. rotating seat. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0018] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. "Include" or "comprise" and other similar words used in the present disclosure mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0019] like Figures 1 to 13As shown, a steering screw friction force detection device provided by the present invention comprises a bottom plate 2, a rotating seat 11 is rotatably provided on the top of the bottom plate 2, a rotating plate 4 is provided on the top of the rotating seat 11, a detection structure 6 is provided on one side of the top of the rotating plate 4, a control structure 1 is provided on one side of the top of the bottom plate 2, a screw rod 3 is provided on the top of the rotating plate 4, a ball slider 5 is provided on the screw rod 3, a slide groove 10 is provided on the top of the rotating plate 4, and a handle 8 is provided on one side of the rotating plate 4; The detection structure 6 includes an auxiliary block 601, a slider 614 is provided at the bottom of the auxiliary block 601, the slider 614 is adapted to the slide slot 10, a moving block 609 is rotatably provided at the top of the auxiliary block 601, a spring 7 is provided on one side of the auxiliary block 601, a detector 9 is provided on one side of the spring 7, the rotating plate 4 can rotate around the rotating connection with the rotating seat 11 as the center and synchronously control the auxiliary block 601 to rotate in the slide slot 10 through the spring 7, and the spring 7 can switch the stretching and contraction states through the rotation of the rotating plate 4.

[0020] A rotating shaft 604 is provided on one side of the moving block 609 , an auxiliary rod 611 is rotatably provided on one side of the rotating shaft 604 , a micrometer 606 is slidably provided on the auxiliary rod 611 , and a plurality of connecting blocks 612 are provided in a circular array around the moving block 609 .

[0021] A movable rod 603 slides through the top of the connecting block 612, a top plate 602 is provided on the top of the movable rod 603, a resistance bead 613 is rotatably provided at the bottom of the movable rod 603, a torque spring is provided at the rotating position of the movable rod 603, a scale mark is provided on the outer wall of the moving block 609, and the resistance bead 613 is used in conjunction with the scale mark.

[0022] A shell 608 is provided on the top of the moving block 609, and a counter-threaded rod 610 is rotatably provided on the back of the inner wall of the shell 608. A knob 605 passes through the front of the shell 608, and the back of the knob 605 is fixedly connected to the front of the counter-threaded rod 610. A splint 607 is provided on the front and rear sides of the counter-threaded rod 610, and an anti-slip pad is provided on the top of the front of the splint 607.

[0023] The control structure 1 comprises a bracket 101 , the top of which is in a hollow cylindrical shape, a pneumatic clamp 109 is rotatably provided on the top of the bracket 101 , and a plurality of movable blocks 102 are slidably provided on one side of the pneumatic clamp 109 in a circular array.

[0024] A movable claw 103 is slidably disposed inside the movable block 102 , and a bolt penetrates through the surface of the movable block 102 , and the bolt can adjust the position of the movable claw 103 .

[0025] A driven wheel 104 is disposed on the other side of the pneumatic clamping jaw 109 , and a through slot 108 is formed in the middle of the pneumatic clamping jaw 109 and the driven wheel 104 .

[0026] A block 106 is slidably provided at the top of one side of the bracket 101 , a control rod 112 is provided on one side of the block 106 , one side of the control rod 112 passes through the bracket 101 and extends to the outside of the bracket 101 , and a friction wheel 105 is provided on one side of the block 106 .

[0027] A motor 111 is provided at the bottom of the bracket 101 , a power wheel 110 is provided on one side of the motor 111 , a pulley set 107 is provided on one side of the power wheel 110 , and the top of the front side of the pulley set 107 is fixedly connected to the back side of the friction wheel 105 .

[0028] The working principle and use process of the present invention are as follows: when in use, the ball slider 5 needs to be inspected first, and one side of the screw rod 3 is placed in the center position of the pneumatic clamp 109. After placement, the pneumatic clamp 109 is started to control the movement of the three movable blocks 102. The movable blocks 102 drive the movable claws 103 to move toward the center position to clamp and fix the screw rod 3. After fixation, the knob 605 is rotated again. The knob 605 drives the opposite threaded rod 610 to rotate. The opposite threaded rod 610 will control the two clamping plates 607 to move toward the middle at the same time until it moves to clamp the front and back sides of the ball slider 5, and then the movable rod 603 is pushed upward so that the top plate 602 on its top is close to the bottom of the ball slider 5. Finally, the thousandth Table 606 also hits the bottom of the ball slider 5. After all adjustments are made, the motor 111 is started. The motor 111 drives the power wheel 110 to rotate. The power wheel 110 drives the pulley set 107 to rotate and controls the driven wheel 104 to rotate through meshing. The pulley set 107 controls the friction wheel 105 to rotate. At this time, the friction wheel 105 is in an idling state. The rotation of the driven wheel 104 can drive the pneumatic clamp 109 to rotate. The pneumatic clamp 109 drives the screw rod 3 to rotate, and the ball slider 5 will move to one side along the screw rod 3. When the ball slider 5 moves, it will pull the spring 7, and the spring 7 will trigger the detector 9 to detect the friction force. The movement of the ball slider 5 will also drive the moving block 609 to move. The moving block 609 The auxiliary block 601 is driven to move along the slide groove 10. With the end of a stroke, the ball slider 5 and the auxiliary block 601 will move to the tail of the slide groove 10. At this time, the rotating plate 4 is rotated. The rotating plate 4 rotates with the rotating connection with the rotating seat 11 as the center of the circle. The rotation of the rotating plate 4 will drive the spring 7 to move, and the spring 7 will drive the auxiliary block 601 to rotate in the slide groove 10. With the continuous rotation of the rotating plate 4, the spring 7 will shrink to the initial state. At this time, the motor 111 is reversed to control the detector 9 to perform a secondary detection. When the ball slider 5 has a smoothness error during the detection, the top plate 602 will control the movable rod 603 to move downward. The amount of downward movement is the maximum error of smoothness, which can allow the user to see at a glance. After identification, the user can quickly find the error by using the micrometer 606 according to the maximum error. After the ball slider 5 is inspected, the clamping plate 607 can be loosened to start inspecting the screw rod 3. During the inspection, the top plate 602 and the micrometer 606 are pressed against the surface of the screw rod 3 and then the pneumatic clamping jaws 109 clamp the ball slider 5. After clamping, the tail of the screw rod 3 will pass through the through groove 108 and the friction wheel 105 will contact the surface of the screw rod 3. Then continue to start the motor 111, and the pulley group 107 will drive the screw rod 3 to move through the rotation of the friction wheel 105. When the screw rod 3 moves, the surface smoothness of the screw rod 3 can be detected. Some heavy objects can also be placed on the ball slider 5 for load-bearing friction detection and load-bearing smoothness detection.

[0029] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A steering screw friction force detection device, comprising a base plate (2), characterized in that: A rotating seat (11) is rotatably provided at the top of the bottom plate (2), a rotating plate (4) is provided at the top of the rotating seat (11), a detection structure (6) is provided on one side of the top of the rotating plate (4), a control structure (1) is provided on one side of the top of the bottom plate (2), a screw rod (3) is provided at the top of the rotating plate (4), a ball slider (5) is provided on the screw rod (3), a slide groove (10) is provided at the top of the rotating plate (4), and a handle (8) is provided on one side of the rotating plate (4); The detection structure (6) comprises an auxiliary block (601), a slider (614) is provided at the bottom of the auxiliary block (601), the slider (614) is adapted to the slide groove (10), a moving block (609) is rotatably provided at the top of the auxiliary block (601), a spring (7) is provided on one side of the auxiliary block (601), a detector (9) is provided on one side of the spring (7), the rotating plate (4) can rotate around a rotation connection with the rotating seat (11) as a circle center and synchronously control the auxiliary block (601) to rotate in the slide groove (10) through the spring (7), and the spring (7) can switch between a stretched state and a contracted state through the rotation of the rotating plate (4).

2. A steering screw friction force detection device according to claim 1, characterized in that: A rotating shaft (604) is provided on one side of the moving block (609), an auxiliary rod (611) is rotatably provided on one side of the rotating shaft (604), a micrometer (606) is slidably provided on the auxiliary rod (611), and a plurality of connecting blocks (612) are provided in a circular array around the moving block (609).

3. A steering screw friction force detection device according to claim 2, characterized in that: A movable rod (603) is slidably penetrated through the top of the connecting block (612), a top plate (602) is provided on the top of the movable rod (603), a resistance bead (613) is rotatably provided at the bottom of the movable rod (603), a torque spring is provided at the rotation point of the movable rod (603), a scale mark is provided on the outer wall of the moving block (609), and the resistance bead (613) is used in conjunction with the scale mark.

4. A steering screw friction force detection device according to claim 1, characterized in that: A shell (608) is provided on the top of the moving block (609), and a counter-threaded rod (610) is rotatably provided on the back of the inner wall of the shell (608), a knob (605) passes through the front of the shell (608), and the back of the knob (605) is fixedly connected to the front of the counter-threaded rod (610), and a clamping plate (607) is provided on the front and rear sides of the counter-threaded rod (610), and a non-slip pad is provided on the top of the front of the clamping plate (607).

5. A steering screw friction force detection device according to claim 1, characterized in that: The control structure (1) comprises a bracket (101), the top of the bracket (101) is in the shape of a hollow cylinder, a pneumatic clamp (109) is rotatably provided on the top of the bracket (101), and a plurality of movable blocks (102) are slidably provided in a circular array on one side of the pneumatic clamp (109).

6. A steering screw friction force detection device according to claim 5, characterized in that: A movable claw (103) is slidably disposed inside the movable block (102), and a bolt penetrates through the surface of the movable block (102), and the bolt can adjust the position of the movable claw (103).

7. A steering screw friction force detection device according to claim 5, characterized in that: A driven wheel (104) is provided on the other side of the pneumatic clamping jaw (109), and a through slot (108) is provided in the middle of the pneumatic clamping jaw (109) and the driven wheel (104).

8. A steering screw friction force detection device according to claim 5, characterized in that: A clamping block (106) is slidably provided at the top of one side of the bracket (101), a control rod (112) is provided on one side of the clamping block (106), one side of the control rod (112) penetrates the bracket (101) and extends to the outside of the bracket (101), and a friction wheel (105) is provided on one side of the clamping block (106).

9. A steering screw friction force detection device according to claim 8, characterized in that: A motor (111) is provided at the bottom of the bracket (101), a power wheel (110) is provided on one side of the motor (111), a belt pulley group (107) is provided on one side of the power wheel (110), and the top of the front side of the belt pulley group (107) is fixedly connected to the back side of the friction wheel (105).

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