Automobile ball screw laser measuring device and measuring method thereof

Abstract

The invention discloses an automobile ball screw laser measurement device and a measurement method thereof, and relates to the technical field of laser measurement, and the device comprises a C-shaped installation seat; the rotating device is connected to one side of the mounting base, and the rotating device is used for providing power for rotation of the ball screw; rotating the bearing device; a linear limiting device; and a laser emitter. By means of mutual cooperation between the rotary disc and the rotary alignment mechanism and mutual attraction between two alignment magnets, the one-way alignment block is attracted to be in the state of being attached to the plane part, rotation of the rotary disc is limited, rotation of the rotary disc is more accurate, the one-way alignment block moves downwards to knock on the surface of the inclined plane part, and the alignment precision of the rotary disc is improved. And meanwhile, a worker can be prompted that the rotating disc is rotated by 360 degrees, excessive rotation of the rotating disc is prevented, lead measurement of the ball screw is more accurate, the error-tolerant rate of manual rotation is increased, and errors are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of laser measurement, and in particular to a laser measurement device for an automobile ball screw and a measurement method thereof. Background Art

[0002] In the automotive industry, ball screws are key components for precise transmission. Their lead accuracy directly determines the performance of the vehicle's powertrain, braking system, and intelligent driver assistance systems. Accurately measuring ball screw lead is crucial for ensuring the quality of automotive component assembly and the reliability of the entire vehicle.

[0003] Currently, existing ball screw lead measurement technology has significant drawbacks. Traditional measurement devices rely on manual or simple mechanical mechanisms to drive the screw, making it difficult to precisely control the screw's rotation angle to a standard 360 degrees. Using a motor drive, the lack of high-precision angle feedback and calibration mechanisms can lead to accumulated angular deviations during the screw's rotation, affecting the relationship between the nut seat's linear displacement and the number of screw rotations.

[0004] If ball screw rotation relies on manual operation, it's difficult to ensure consistent angles throughout each rotation. Manual rotation can lead to errors in lead calculations due to under- or over-rotation. For example, if the screw doesn't rotate exactly one full revolution, the measured displacement won't accurately reflect the actual lead, impacting the reliability of the measurement. Consequently, manual rotation has a low tolerance for error and is prone to errors. Summary of the Invention

[0005] The object of the present invention is to provide a laser measuring device for an automobile ball screw and a measuring method thereof, so as to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a laser measuring device for an automobile ball screw, comprising: A mounting seat, the mounting seat being arranged in a C shape; A rotating device connected to one side of the mounting seat, the rotating device being used to provide power for the rotation of the ball screw; A rotating bearing device, which is installed on the other side of the mounting seat and is used to support the rotation of the ball screw; A linear limiter, which is installed on the inner side of the mounting seat and is used to guide the movement of the ball nut seat; A laser emitter is installed on the mounting seat. The laser emitter measures the moving distance of the ball nut seat by emitting laser to detect the lead of the ball screw.

[0007] Preferably, the rotating device comprises: A main shaft, the main shaft being rotatably connected to the mounting seat via a bearing, and one end of the main shaft being connected to the ball screw via a coupling; A turntable connected to the other end of the main shaft and equipped with a handle; A rotation alignment mechanism is installed on the mounting seat and is used to align the rotation of the turntable.

[0008] Preferably, the rotation alignment mechanism includes: A fixing frame, the fixing frame being fixedly mounted on the mounting seat; A one-way alignment block, located below the fixing frame; An insertion rod, one end of the rotation alignment mechanism is fixedly connected to the one-way alignment block, the insertion rod is movably matched with the fixing frame, and the insertion rod is T-shaped; A ball groove is provided at the bottom of the one-way alignment block, and the ball is movably arranged inside the ball groove.

[0009] Preferably, an alignment groove is provided on the outer side of the turntable, and the one-way alignment block cooperates with the alignment groove. The alignment groove includes an inclined portion and a flat portion. The flat portion and the fitting surface of the one-way alignment block are in a vertical state. Alignment magnets are fixedly embedded at the fitting position of the flat portion and the one-way alignment block, and adjacent alignment magnets are in a state where opposite magnetic poles are facing each other.

[0010] Preferably, the rotating bearing device includes: A threaded rod, the threaded rod being movably connected to the mounting seat; A rotating nut seat, the rotating nut seat is threadably matched with the threaded rod, and the rotating nut seat is arranged on the outside of the mounting seat; A fixing ring, the fixing ring is fixedly mounted on the outer side of the mounting seat, and the fixing ring is rotatably matched with the rotating nut seat through a bearing; A rotating gear ring, the rotating gear ring is fixedly mounted on the outside of the rotating nut seat, and the outer side of the rotating gear ring is provided with a one-way slot in a ring-shaped array; An angle positioning mechanism, the angle positioning mechanism is installed on the fixed ring, and the angle positioning mechanism is used to limit the rotation of the rotating gear ring in one direction; A mounting cylinder, one end of the threaded rod is fixedly connected to a movable plate, the movable plate is fixedly connected to a guide slide, the movable plate is connected to a cylinder, and the cylinder is rotatably matched with the mounting cylinder through a bearing; Elastic clamps, the elastic clamps are fixedly mounted on the inner wall of the mounting tube, and the elastic clamps are arranged in a ring array, the cross-section of the elastic clamps is V-shaped, and the surface of the elastic clamps is connected to an anti-friction pad; The guide cylinder is fixedly mounted on the mounting seat, a slide groove is provided inside the guide cylinder, and the guide slide cooperates with the inner cavity of the slide groove.

[0011] Preferably, the angle positioning mechanism includes: A fixing seat, the fixing seat being fixedly mounted on the fixing ring; A sliding block, the sliding block being slidably fitted inside the fixing seat; A one-way card block, which is connected to the bottom of the sliding block and is integrated with the sliding block. The one-way card block cooperates with the one-way card slot on the rotating gear ring; A spring is installed inside the fixing seat and is used for elastically supporting the sliding block.

[0012] Preferably, the angle positioning mechanism further comprises: A sliding post, one end of which is fixedly connected to the sliding block, and a slot is provided on the fixing seat to match the sliding post; A rotating hanging ring is provided above the sliding column, and a fixed column is fixedly installed on the fixed seat. The rotating hanging ring is rotatably connected to the fixed column, and the rotating hanging ring is arranged in a U shape. An annular groove is provided on the sliding column, and the rotating hanging ring and the inner cavity of the annular groove cooperate with each other.

[0013] Preferably, the linear limiting device includes: A mounting plate, the mounting plate being mounted on the ball nut seat by bolts; The laser receiver is fixedly mounted on the top of the mounting plate, and the position of the laser receiver corresponds to that of the laser transmitter.

[0014] Preferably, the linear limiting device further includes: A guide rod, the guide rod being fixedly mounted on the inner side of the mounting seat; a slide seat, the slide seat being in sliding engagement with the guide rod; The connecting plate is fixedly mounted on the top of the slide seat and is connected to the mounting plate via bolts.

[0015] Another object of the present invention is to provide a measurement method of a laser measuring device for a ball screw of an automobile, comprising the following steps: The cam is fixed on the guide rail and the guide rail is fixed on the guide rail, and the cam is fixed on the guide rail with the cam, so that the cam is fixed on the guide rail, and the guide rail is fixed on the guide rail. The cam is fixed on the guide rail, and the guide rail is fixed on the guide rail. The cam is fixed on the guide rail, and the guide rail is fixed on the guide rail. The cam is fixed on the guide rail, and the guide rail is fixed on the guide rail. Step 2: Turn the handle on the turntable, and guide the relative position between the one-way alignment block and the turntable through the inclined portion on the turntable, so that when the turntable rotates counterclockwise, the one-way alignment block can be pushed out of the inner cavity of the alignment groove, and the turntable continues to rotate counterclockwise until the one-way alignment block corresponds to the position of the alignment groove again. The one-way alignment block falls to its initial state of cooperation with the inner cavity of the alignment groove due to its own weight. At this time, the turntable rotates one circle, and the synchronous rotation of the ball screw is driven by the rotating device, and the linear limit device is used to limit the linear position of the ball nut seat, so that the rotation of the ball screw can linearly advance the position of the ball nut seat for a certain distance, and synchronously drive the movement of the laser receiver through the mounting plate, thereby changing the relative position between the laser transmitter and the laser receiver, and measuring the moving distance of the ball nut seat to realize the calculation of the lead of the ball screw for one rotation.

[0016] The technical effects and advantages of the present invention are as follows: The present invention utilizes the mutual cooperation between the turntable and the rotation alignment mechanism, and the mutual attraction between the two alignment magnets is used to adsorb the one-way alignment block to a state of being in contact with the flat portion, so as to limit the rotation of the turntable, making the rotation of the turntable more precise, and by moving the one-way alignment block downward and knocking on the surface of the inclined portion, it can also remind the staff that the turntable has rotated 360 degrees, preventing the turntable from rotating excessively, making the lead measurement of the ball screw more accurate, because the turntable is unlocked only when it is rotated counterclockwise, it can return to its original position when it is rotated clockwise to a state of being in contact with the one-way alignment block, so that when the turntable rotates excessively, it can also be rotated back to a state of being attached to the one-way alignment block through the adsorption between the two alignment magnets, thereby improving the fault tolerance of manual rotation and reducing errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the front structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the rotating bearing device of the present invention; Figure 4 This is a schematic diagram of the side structure of the rotating gear ring of the present invention; Figure 5 This is a schematic diagram of the internal structure of the angle positioning mechanism of the present invention; Figure 6 It is a side structural diagram of the rotating device of the present invention; Figure 7 This is a schematic diagram of the internal structure of the rotation alignment mechanism of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the turntable of the present invention.

[0018] In the figure: 1. Mounting seat; 2. Rotating device; 21. Turntable; 22. Rotating alignment mechanism; 201. Alignment groove; 2011. Inclined portion; 2012. Flat portion; 202. Alignment magnet; 221. One-way alignment block; 222. Insert rod; 223. Ball; 3. Rotating bearing device; 31. Threaded rod; 32. Rotating nut seat; 33. Fixed ring; 34. Rotating gear ring; 35. Angle positioning mechanism; 351. Fixed seat; 352. Sliding block; 353. One-way block; 354. Spring; 355. Sliding column; 356. Rotating hanging ring; 36. Mounting cylinder; 37. Elastic splint; 38. Guide cylinder; 4. Linear limit device; 41. Mounting plate; 42. Laser receiver; 43. Guide rod; 44. Sliding seat; 45. Connecting plate; 5. Laser transmitter. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] The present invention provides Figure 1-8The illustrated device is a laser measuring device for an automotive ball screw, comprising: a mounting base 1, which is arranged in a C shape; a rotating device 2, which is connected to one side of the mounting base 1 and is used to provide power for the rotation of the ball screw; a rotating bearing device 3, which is interspersed and installed on the other side of the mounting base 1 and is used to support the rotation of the ball screw; a linear limit device 4, which is installed on the inner side of the mounting base 1 and is used to guide the movement of the ball nut seat; and a laser emitter 5, which is installed on the mounting base 1 and measures the movement distance of the ball nut seat by emitting laser light, thereby detecting the lead of the ball screw.

[0021] Among them, the rotating device 2 includes: a main shaft, which is rotatably connected to the mounting seat 1 through a bearing, and one end of the main shaft is connected to the ball screw through a coupling; a turntable 21, which is connected to the other end of the main shaft, and a handle is installed on the turntable 21; a rotation alignment mechanism 22, which is installed on the mounting seat 1, and the rotation alignment mechanism 22 is used to align the rotation of the turntable 21. The rotation of the turntable 21 can drive the rotation of the main shaft, so that the main shaft can synchronously drive the rotation of the ball screw through the coupling, and the rotation of the turntable 21 is facilitated by the rotation alignment mechanism 22.

[0022] Furthermore, the rotation alignment mechanism 22 includes: a fixed frame, the fixed frame is fixedly mounted on the mounting seat 1; a one-way alignment block 221, the one-way alignment block 221 is located below the fixed frame; an insertion rod 222, one end of the rotation alignment mechanism 22 is fixedly connected to the one-way alignment block 221, the insertion rod 222 is movably matched with the fixed frame, and the insertion rod 222 is T-shaped; a ball 223, a ball groove is provided at the bottom of the one-way alignment block 221, the ball 223 is movably arranged inside the ball groove, and the insertion rod 222 is slidably connected to the fixed frame through a linear bearing. When the turntable 21 moves from the Figure 6When the position shown is rotated 360 degrees, the one-way alignment block 221 is opposite to the inner cavity of the alignment groove 201. At this time, the one-way alignment block 221 falls down due to its own weight and can be stuck in the inner part of the alignment groove 201, indicating that the turntable 21 has rotated one circle. The fixed frame is convenient for limiting the sliding of the insertion rod 222, so that the insertion rod 222 slides up and down more smoothly. By setting the ball 223, when the turntable 21 rotates, the ball 223 can roll on the outer surface of the turntable 21, making the rotation of the turntable 21 smoother. The outer side of the turntable 21 is provided with an alignment groove 201. 01, the one-way alignment block 221 cooperates with the alignment groove 201, and the alignment groove 201 includes an inclined portion 2011 and a flat portion 2012. The inclined setting of the inclined portion 2011 facilitates the guidance of the movement of the one-way alignment block 221. Since the inclined portion 2011 is in contact with the outer circumference of the turntable 21, when the turntable 21 is rotated counterclockwise, the one-way alignment block 221 can be sent out of the inner cavity of the alignment groove 201. The vertical setting of the flat portion 2012 allows the surface to fit with the vertical surface of the one-way alignment block 221, so as to ensure that after the turntable 21 rotates one circle, the one-way alignment block 221 is in contact with the outer circumference of the turntable 21. The positioning block 221 can limit the rotation of the turntable 21 to prevent the turntable 21 from reversing to ensure the accuracy of the rotation. The fitting surface of the flat portion 2012 and the one-way positioning block 221 is in a vertical state. The fitting position of the flat portion 2012 and the one-way positioning block 221 is fixedly embedded with a positioning magnet 202, and the adjacent positioning magnets 202 are in a state of opposite magnetic poles facing each other. The mutual attraction between the two positioning magnets 202 can adsorb the one-way positioning block 221 to a state of fitting with the flat portion 2012, so as to limit the rotation of the turntable 21 and ensure the rotation accuracy of the turntable 21. The movement is more precise, and by moving the one-way alignment block 221 downward and knocking on the surface of the inclined portion 2011, the staff can be prompted that the turntable 21 has rotated 360 degrees, preventing the turntable 21 from rotating excessively, making the lead measurement of the ball screw more accurate. Since the turntable 21 is unlocked only when it is rotated counterclockwise, it can be returned to its original position when it is rotated clockwise to a state in which it is in contact with the one-way alignment block 221. Through the adsorption between the two alignment magnets 202, when the turntable 21 rotates excessively, it can also be rotated back to a state in which it is attached to the one-way alignment block 221, so as to improve the fault tolerance of manual rotation and reduce errors.

[0023] The rotating bearing device 3 includes: a threaded rod 31, which is movably connected to the mounting seat 1; a rotating nut seat 32, which is threadedly matched with the threaded rod 31, and the rotating nut seat 32 is arranged on the outside of the mounting seat 1; a fixing ring 33, which is fixedly mounted on the outside of the mounting seat 1, and the fixing ring 33 is rotatably matched with the rotating nut seat 32 through a bearing; a rotating gear ring 34, which is fixedly mounted on the outside of the rotating nut seat 32, and the outer side of the rotating gear ring 34 is provided with a one-way card groove in a ring-shaped array; an angle positioning mechanism 35, which is mounted on the fixing ring 33, and the angle positioning mechanism 35 is used to limit the rotation of the rotating gear ring 34 in one direction; a mounting tube 36, the threaded rod 31 The cam 36 is fixedly mounted on the support 1 and the guide rail 38 is fixedly mounted on the support 1. The cam 36 is fixedly mounted on the support 1 and the guide rail 38 is fixedly mounted on the support 1. The cam 36 is fixedly mounted on the support 1 and the guide rail 38 is fixedly mounted on the support 1. The cam 36 is fixedly mounted on the support 1 and the guide rail 38 is fixedly mounted on the support 1. The cam 36 is fixedly mounted on the support 1 and the guide rail 38 is fixedly mounted on the support 1. The cam 36 is fixedly mounted on the support 1 and the guide rail 38 is fixedly mounted on the support 1. The cam 36 is fixedly mounted on the support 1 and the guide rail 38 is fixedly mounted on the support 1. The cam 36 is fixedly mounted on the support 1 and the guide rail 38 is fixedly mounted on the support 1. The screw thread cooperation between the rotating nut seat 32 and the threaded rod 31 is convenient for providing power for the movement of the threaded rod 31. When the rotating nut seat 32 is rotated, the position of the threaded rod 31 can be advanced, so that the threaded rod 31 can push the mounting cylinder 36 to move in the direction of the ball screw, which is convenient for bearing the rotation of the end of the ball screw. The rotation of the rotating gear ring 34 is conveniently limited by the angle positioning mechanism 35, so that the rotating gear ring 34 can only rotate in one direction clockwise. When the elastic splint 37 elastically clamps and fixes the end of the screw rod, the angle positioning mechanism 35 can clamp the rotating gear ring 34 to prevent the rotating gear ring 34 from rotating, thereby preventing the rotating nut seat 32 from rotating due to vibration. The rod 31 supports the mounting tube 36 more stably, and the mutual cooperation between the guide slide and the slide groove facilitates the movement of the threaded rod 31 to limit the threaded rod 31 so that the threaded rod 31 can only move in a linear manner. That is, when the rotating nut seat 32 is rotated, the linear movement of the threaded rod 31 can be pushed, so that the mounting tube 36 is pushed out from the inside of the guide tube 38 to cooperate with the screw rod. Through the elastic setting of the elastic splint 37, when the end of the screw rod cooperates with the mounting tube 36, the elastic splint 37 will be squeezed, so that the angle of the elastic splint 37 is squeezed to a gradually decreasing state, so as to achieve self-centering adaptive pressing of the end of the ball screw, avoid excessive clamping of the traditional clamp, which may cause damage to the screw rod, and ensure stable rotation of the screw rod during measurement.

[0024] Specifically, the angle positioning mechanism 35 includes: a fixed seat 351, which is fixedly mounted on the fixed ring 33; a sliding block 352, which is slidably arranged inside the fixed seat 351; a one-way clamping block 353, which is connected to the bottom of the sliding block 352, and the one-way clamping block 353 and the sliding block 352 are integrated, and the one-way clamping block 353 cooperates with the one-way clamping groove on the rotating gear ring 34; a spring 354, which is mounted inside the fixed seat 351 and is used to elastically support the sliding block 352; the angle positioning mechanism 35 also includes: a sliding post 355, one end of the sliding post 355 is fixedly connected to the sliding block 352, and a slot is provided on the fixed seat 351 to match the sliding post 355; a rotating hanging ring 356, a fixed post is provided above the sliding post 355, and the fixed post is fixedly installed on the fixed seat 351, the rotating hanging ring 356 is rotatably connected to the fixed post, and the rotating hanging ring 356 is U-shaped, an annular groove is provided on the sliding post 355, and the rotating hanging ring 356 cooperates with the inner cavity of the annular groove. One side of the one-way block 353 is a slope, so that when the one-way slot is rotated clockwise and its slope is squeezed, the one-way block 353 can be pushed out through the component of force. The inner cavity of the one-way slot releases the one-way locking of the rotating gear ring 34 by the one-way block 353, and the sliding of the sliding block 352 is limited by the fixing seat 351, so that the sliding block 352 can only slide in the vertical direction. At the same time, it is also convenient to accommodate the sliding block 352 and the one-way block 353. The compression deformation of the spring 354 is convenient to provide elastic support for the sliding block 352, making the cooperation between the one-way block 353 and the one-way slot more stable. At the same time, it is convenient to provide a restoring force for the sliding block 352, so that when the one-way block 353 is pushed out of the inner cavity of the one-way slot, it moves toward the rotating gear ring 34 The trend makes it easy for the one-way block 353 to continue to cooperate with the next one-way slot as the rotating gear ring 34 rotates, so as to better prevent the rotating gear ring 34 from reversing. When it is necessary to disassemble the relative position between the screw rod and the rotating bearing device 3, the rotating hanging ring 356 is rotated to the horizontal, and the sliding post 355 is pulled upward to rotate the rotating hanging ring 356 to the inside of the annular groove. The sliding post 355 is supported by the rotating hanging ring 356, so that the one-way block 353 can be kept in the state of being stored in the fixing seat 351, so as to keep the angle positioning mechanism 35 unlocked for the rotating gear ring 34.

[0025] Among them, the linear limit device 4 includes: a mounting plate 41, which is mounted on the ball nut seat by bolts; a laser receiver 42, which is fixedly mounted on the top of the mounting plate 41, and the position of the laser receiver 42 corresponds to the laser emitter 5; a guide rod 43, which is fixedly mounted on the inner side of the mounting seat 1; a slide 44, which slides with the guide rod 43; a connecting plate 45, which is fixedly mounted on the top of the slide 44, and the connecting plate 45 is connected to the mounting plate 41 by bolts. Through the installation connection between the mounting plate 41 and the ball nut seat, the movement of the ball nut seat can simultaneously drive the movement of the laser receiver 42 to perform laser ranging. Through the sliding cooperation between the guide rod 43 and the slide 44, the movement of the mounting plate 41 is limited, so that the linear motion of the mounting plate 41 is more stable. Through the cooperation between the connecting plate 45 and the mounting plate 41, the relative position between the mounting plate 41 and the slide 44 is conveniently connected.

[0026] Another object of the present invention is to provide a measurement method of a laser measuring device for a ball screw of an automobile, comprising the following steps: Step 1: First, connect one end of the ball screw to the main shaft through the coupling, install the mounting plate 41 on the ball nut seat through bolts, and then connect the mounting plate 41 to the connecting plate 45 through bolts. Then, rotate the rotating gear ring 34 clockwise so that the one-way card slot on the rotating gear ring 34 pushes the one-way card block 353 upward, so that the locking mechanism 35 of the rotating gear ring 34 is unlocked. Through the sliding cooperation between the guide slide and the guide cylinder 38, the threaded rod 31 is restricted from sliding linearly. The rotatable nut seat 32 and the threaded rod 31 cannot rotate. When the rotating gear ring 34 is rotated, the rotation of the rotatable nut seat 32 can provide thrust for the linear motion of the threaded rod 31, so that the threaded rod 31 can push the mounting cylinder 36 to move in the direction of the ball screw. At this time, the other end of the ball screw squeezes the elastic clamping plate 37, so that the elastic clamping plate 37 is elastically deformed and presses the ball screw, thereby supporting the rotation of the other end of the ball screw. Step 2: Turn the handle on the turntable 21, and guide the relative position between the one-way alignment block 221 and the turntable 21 through the inclined surface 2011 on the turntable 21, so that when the turntable 21 rotates counterclockwise, the one-way alignment block 221 can be pushed out of the inner cavity of the alignment groove 201, and the turntable 21 continues to rotate counterclockwise until the one-way alignment block 221 corresponds to the position of the alignment groove 201 again. The one-way alignment block 221 falls down to the initial state of mutual cooperation with the inner cavity of the alignment groove 201 due to its own weight. At this time, the turntable 21 rotates one circle, and the ball screw is driven to rotate synchronously through the rotating device 2. The linear limiter 4, acting in conjunction with the linear limiter through the ball nut seat, allows the ball screw to rotate, linearly advancing the ball nut seat a certain distance. This, in turn, drives the laser receiver 42 via the mounting plate 41, thereby changing the relative position between the laser emitter 5 and the laser receiver 42. This allows the ball nut seat to be measured, enabling the calculation of the lead of the ball screw per one rotation. The laser emitter 5 and the laser receiver 42 are arranged separately. When the ball screw rotates, the ball nut seat moves, and their relative positions change, the laser receiver 42 captures the changes in the laser signal from the laser emitter 5. Compared to traditional contact measurement, this non-contact method avoids physical contact between the measuring tool and the screw, eliminating measurement errors caused by friction and wear. This significantly improves measurement accuracy and reliability, meeting the stringent requirements for high-precision ball screw lead measurement in automotive manufacturing. The laser emitter 5 and the laser receiver 42 work together to monitor the displacement of the ball nut seat in real time. As the screw rotates, the laser receiver 42 rapidly senses the changes in the laser signal generated by the movement of the ball nut seat and converts the signal into data, enabling real-time acquisition of the ball nut seat displacement. This real-time capability ensures accurate acquisition of the corresponding ball nut seat displacement data for each screw rotation, providing a reliable basis for accurate lead calculation.

[0027] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A laser measuring device for automobile ball screw and a measuring method thereof, characterized in that: include: A mounting seat (1), wherein the mounting seat (1) is arranged in a C-shape; A rotating device (2), the rotating device (2) being connected to one side of the mounting seat (1), and the rotating device (2) being used to provide power for the rotation of the ball screw; A rotating bearing device (3), the rotating bearing device (3) is installed through the other side of the mounting seat (1), and the rotating bearing device (3) is used to carry the rotation of the ball screw; A linear limiting device (4), the linear limiting device (4) being installed on the inner side of the mounting seat (1), and the linear limiting device (4) being used to guide the movement of the ball nut seat; A laser emitter (5) is mounted on the mounting seat (1), and the laser emitter (5) measures the moving distance of the ball nut seat by emitting laser light, thereby realizing detection of the ball screw lead.

2. The automotive ball screw laser measuring device and the measuring method thereof according to claim 1, characterized in that: The rotating device (2) comprises: A main shaft, the main shaft being rotatably connected to the mounting seat (1) via a bearing, and one end of the main shaft being connected to the ball screw via a coupling; A turntable (21), the turntable (21) is connected to the other end of the main shaft, and a handle is installed on the turntable (21); A rotation alignment mechanism (22) is mounted on the mounting seat (1), and the rotation alignment mechanism (22) is used to align the rotation of the turntable (21).

3. The automotive ball screw laser measuring device and the measuring method thereof according to claim 2, characterized in that: The rotation alignment mechanism (22) comprises: A fixing frame, the fixing frame being fixedly mounted on the mounting seat (1); a one-way alignment block (221), the one-way alignment block (221) being located below the fixing frame; An insertion rod (222), one end of the rotation alignment mechanism (22) is fixedly connected to the one-way alignment block (221), the insertion rod (222) is movably matched with the fixing frame, and the insertion rod (222) is T-shaped; A ball (223) is provided at the bottom of the one-way alignment block (221), and the ball (223) is movably arranged inside the ball groove.

4. The automotive ball screw laser measuring device and the measuring method thereof according to claim 3, characterized in that: An alignment groove (201) is provided on the outer side of the turntable (21), the one-way alignment block (221) cooperates with the alignment groove (201), the alignment groove (201) comprises an inclined portion (2011) and a flat portion (2012), the contact surface between the flat portion (2012) and the one-way alignment block (221) is in a vertical state, and alignment magnets (202) are fixedly embedded at the contact portion between the flat portion (2012) and the one-way alignment block (221), and adjacent alignment magnets (202) are in a state where opposite magnetic poles are opposed to each other.

5. The automotive ball screw laser measuring device and the measuring method thereof according to claim 1, characterized in that: The rotating bearing device (3) comprises: A threaded rod (31), wherein the threaded rod (31) is movably connected to the mounting seat (1); A rotating nut seat (32), wherein the rotating nut seat (32) is threadably engaged with the threaded rod (31), and the rotating nut seat (32) is arranged on the outside of the mounting seat (1); A fixing ring (33), the fixing ring (33) is fixedly mounted on the outside of the mounting seat (1), and the fixing ring (33) is rotatably engaged with the rotating nut seat (32) via a bearing; A rotating gear ring (34), the rotating gear ring (34) is fixedly mounted on the outside of the rotating nut seat (32), and the outer side of the rotating gear ring (34) is provided with a one-way slot in a ring-shaped array; An angle positioning mechanism (35), the angle positioning mechanism (35) is mounted on the fixed ring (33), and the angle positioning mechanism (35) is used to limit the rotation of the rotating gear ring (34) in one direction; A mounting cylinder (36), one end of the threaded rod (31) is fixedly connected to a movable plate, a guide carriage is fixedly connected to the movable plate, a cylinder is connected to the movable plate, and the cylinder is rotatably engaged with the mounting cylinder (36) via a bearing; Elastic clamping plates (37), the elastic clamping plates (37) are fixedly mounted on the inner wall of the mounting tube (36), and the elastic clamping plates (37) are arranged in a ring array, the cross section of the elastic clamping plates (37) is arranged in a V-shape, and the surface of the elastic clamping plates (37) is connected to an anti-friction pad; A guide cylinder (38) is fixedly mounted on the mounting seat (1), a slide groove is provided inside the guide cylinder (38), and the guide slide cooperates with the inner cavity of the slide groove.

6. The automotive ball screw laser measuring device and the measuring method thereof according to claim 5, characterized in that: The angle positioning mechanism (35) comprises: A fixing seat (351), wherein the fixing seat (351) is fixedly mounted on the fixing ring (33); A sliding block (352), the sliding block (352) being slidably fitted inside the fixing seat (351); a one-way card block (353), the one-way card block (353) being connected to the bottom of the sliding block (352), the one-way card block (353) and the sliding block (352) being integrally arranged, the one-way card block (353) cooperating with the one-way card slot on the rotating gear ring (34); A spring (354) is installed inside the fixing seat (351), and the spring (354) is used to elastically support the sliding block (352).

7. The automotive ball screw laser measuring device and the measuring method thereof according to claim 6, characterized in that: The angle positioning mechanism (35) further comprises: A sliding post (355), one end of which is fixedly connected to the sliding block (352), and a slot matching the sliding post (355) is provided on the fixing seat (351); A rotating hanging ring (356) is provided above the sliding column (355), and a fixed column is fixedly installed on the fixed seat (351). The rotating hanging ring (356) is rotatably connected to the fixed column, and the rotating hanging ring (356) is provided in a U shape. An annular groove is provided on the sliding column (355), and the rotating hanging ring (356) cooperates with the inner cavity of the annular groove.

8. The automotive ball screw laser measuring device and the measuring method thereof according to claim 1, characterized in that: The linear limiting device (4) comprises: A mounting plate (41), wherein the mounting plate (41) is mounted on the ball nut seat via bolts; A laser receiver (42) is fixedly mounted on the top of the mounting plate (41), and the position of the laser receiver (42) corresponds to that of the laser transmitter (5).

9. The automotive ball screw laser measuring device and the measuring method thereof according to claim 8, characterized in that: The linear limiting device (4) further comprises: A guide rod (43), wherein the guide rod (43) is fixedly mounted on the inner side of the mounting seat (1); A slide seat (44), wherein the slide seat (44) is in sliding engagement with the guide rod (43); A connecting plate (45) is fixedly mounted on the top of the slide seat (44), and the connecting plate (45) is connected to the mounting plate (41) via bolts.

10. A measurement method for a car ball screw laser measuring device, characterized in that: The steps include: Step 1: First, connect one end of the ball screw to the main shaft through the coupling, install the mounting plate (41) on the ball nut seat through bolts, and then connect the mounting plate (41) to the connecting plate (45) through bolts, and then rotate the rotating gear ring (34) clockwise so that the one-way card slot on the rotating gear ring (34) pushes the one-way card block (353) upward, so that the locking mechanism (35) is locked to the rotating gear ring (34) at the unlocking angle, and the sliding fit between the guide slide and the guide cylinder (38) limits the linear sliding of the threaded rod (31) , cannot rotate, cooperate with the threaded connection between the rotating nut seat (32) and the threaded rod (31), when the rotating gear ring (34) is rotated, the self-rotation of the rotating nut seat (32) can provide thrust for the linear motion of the threaded rod (31), so that the threaded rod (31) can push the mounting tube (36) to move in the direction of the ball screw, at this time the other end of the ball screw squeezes the elastic splint (37), so that the elastic splint (37) is elastically deformed and then presses the ball screw, so as to realize the bearing of the rotation of the other end of the ball screw; Step 2: Rotate the handle on the turntable (21) and guide the relative position between the one-way alignment block (221) and the turntable (21) through the inclined portion (2011) on the turntable (21), so that when the turntable (21) rotates counterclockwise, the one-way alignment block (221) can be pushed out of the inner cavity of the alignment groove (201), and continue to rotate the turntable (21) counterclockwise until the one-way alignment block (221) corresponds to the position of the alignment groove (201) again, and the one-way alignment block (221) falls down to the position corresponding to the alignment groove (201) due to the dead weight of the one-way alignment block (221). ) is in the initial state of cooperation between the inner cavities. At this time, the turntable (21) rotates one circle, and the ball screw is driven to rotate synchronously through the rotating device (2). The linear limit device (4) is used to limit the linear position of the ball nut seat, so that the rotation of the ball screw can linearly advance the position of the ball nut seat for a certain distance. The laser receiver (42) is driven to move synchronously through the mounting plate (41), thereby changing the relative position between the laser transmitter (5) and the laser receiver (42). The moving distance of the ball nut seat can be measured to realize the calculation of the lead of the ball screw for one rotation.

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