A ball screw clearance measuring device

Abstract

The present invention relates to the field of gap measurement technology, specifically a ball screw gap measuring device, including a base plate, a placing mechanism installed on the base plate, a limiting mechanism installed on the placing mechanism, a clamping mechanism installed on the placing mechanism, a driving mechanism installed inside the base plate, a fastening mechanism installed on the placing mechanism, a protective mechanism installed on the base plate, and a measuring mechanism installed on the base plate; the placing mechanism is conducive to placing screws of different lengths, the limiting mechanism is driven after the screw is placed, so that the placing mechanism can be firmly limited, and the fastening mechanism is driven to facilitate the driving mechanism to control the clamping mechanism, so that the screw is stably clamped and will not loosen, the protective mechanism resists the driving mechanism to prevent the driving mechanism from loosening, and the installation of the measuring mechanism is conducive to measuring the ball screw gap, and the error is obtained for subsequent maintenance.

Description

Technical Field

[0001] The invention relates to the technical field of gap measurement, in particular to a ball screw gap measuring device. Background Art

[0002] The ball screw is a component that converts rotary motion into linear motion. It is widely used in equipment, engineering, automobiles, aerospace and other fields. It has the characteristics of high precision, reversibility and high efficiency. During the processing and production of the ball screw, due to various reasons, the gap of the ball screw may be abnormal, which in turn causes uncontrollable damage to the ball screw during use. In order to measure the gap of the ball screw, it is necessary to use a grating ruler to perform multiple precise measurements and analyses, so as to repair and maintain the ball screw.

[0003] However, the traditional ball screw gap measuring device is not convenient for clamping and fixing screws of different lengths, which reduces the detection range. In addition, when clamping the two ends of the screw, it is not fixed synchronously, which easily causes the screw to shift and is cumbersome to operate. At the same time, when clamping and fixing the screw, most of the time it is clamped and resisted by screws, which easily causes wear on the screw. The operation of tightening and loosening the screws is cumbersome and the workload is large, which reduces the overall efficiency. Summary of the Invention

[0004] In view of the problems in the prior art, the present invention provides a ball screw clearance measuring device.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a ball screw gap measuring device, including a base plate, a placing mechanism is installed on the base plate, a limiting mechanism is installed on the placing mechanism, a clamping mechanism is installed on the placing mechanism, a driving mechanism is installed inside the base plate, a fastening mechanism is installed on the placing mechanism, a protective mechanism is installed on the base plate, and a measuring mechanism is installed on the base plate.

[0006] Specifically, the placement mechanism includes a first support seat, one end of the base plate is vertically fixedly connected to the first support seat, the other end of the base plate is vertically connected to the second support seat, the bottom of the second support seat is a "convex" shaped structure, the bottom of the second support seat is slidably connected to the base plate through a sliding groove and a card groove, and the top of the first support seat and the second support seat is provided with a placement groove.

[0007] Specifically, the limiting mechanism includes a slide, a slide is installed on the inner side of the bottom of the second support seat, and the slide is slidably connected to the inside of the second support seat through a plurality of extrusion springs. The slide is a "concave" shaped structure, and the bottom of both ends of the slide is a toothed structure. A driving rod is vertically connected to the center of the top of the slide, and the driving rod is slidably connected to the inside of the second support seat. A connecting block is installed on the top of the driving rod through a connecting spring, and a pressure wheel is rotatably connected to the connecting block, and the pressure wheel extends into the inside of the placement groove, and the pressure wheel and the connecting block are slidably connected to the inside of the second support seat. Two racks are installed inside the bottom plate, and the two ends of the slide are located at the top of the rack.

[0008] Specifically, the clamping mechanism includes a rubber block, and a rubber block is installed on the inner side of the top of the first support seat and the second support seat. The two rubber blocks are slidingly connected to the inside of the first support seat and the second support seat through resistance springs. The rubber block extends to the inside of the placement groove. The first support seat and the second support seat are respectively slidingly connected with a clamping block. A protective pad is installed on the top of the clamping block, and the protective pad extends to the inside of the placement groove. The bottom of the clamping block is rotatably connected to a push rod.

[0009] Specifically, the driving mechanism includes a rotating rod, which is rotatably connected to the rotating rod at the center of the bottom plate, one end of the rotating rod is equipped with a first gear, and the inside of one end of the bottom plate is rotatably connected to the second gear through a connecting shaft, the first gear is meshed with the second gear, and the connecting shaft extends to the outside of the bottom plate. A turntable is installed on the connecting shaft, and one end of the rotating rod is threadedly connected to a driving block, one of the bottoms of the top rods is rotatably connected to the driving block, and the other end of the rotating rod is threadedly connected to a driving plate, and the driving plate is slidably connected to the driving block through a movable groove, and the bottom of the other top rod is rotatably connected to the driving block, and the angle between the top rod and the driving block is 45 degrees.

[0010] Specifically, the fastening mechanism includes a pressure block, one of the driving blocks is slidingly connected to the inside of the pressure block, the bottom of the pressure block extends to the outside of the driving block and contacts the driving plate, the driving block is vertically threaded with a screw, the screw extends to the outside of the second support seat, the screw is slidingly connected to the second support seat, and the bottom of the screw is rotatably connected to the pressure block.

[0011] Specifically, the protective mechanism includes a gear ring, a gear ring is installed on the side wall of the turntable, a pin is installed inside the base plate, the pin is slidably connected to the inside of the base plate through a reset spring, the pin is an "L"-shaped structure, the top of the pin extends to the outside of the base plate and contacts the gear ring, one end of the bottom of the pin extends to the outside of the base plate, and a push block is installed on the pin.

[0012] Specifically, the measuring mechanism includes a cylinder, the cylinder is detachably connected to the base plate, a grating measuring instrument is detachably connected to one side of the base plate, the bottom of one end of the grating measuring instrument is slidably connected to the base plate, a through groove is provided at one end of the grating measuring instrument, and the cylinder drive shaft is slidably connected to the inside of one end of the grating measuring instrument through a buffer spring.

[0013] The beneficial effects of the present invention are:

[0014] (1) The ball screw gap measuring device described in the present invention is convenient for placing screws of different lengths through the placement mechanism. After the screw is placed, the limiting mechanism is driven, so that the placement mechanism can be firmly limited, which facilitates the stable placement of the screw, that is, the placement groove is coordinated with the first support seat and the second support seat, which facilitates the placement of screws of different lengths through the sliding of the second support seat and the bottom plate, thereby improving the detection range. The slide plate is separated from the rack by the action of the extrusion spring, which facilitates the sliding position of the second support seat. After the screw is inserted into the placement groove, the screw contacts and squeezes the pressure wheel, and the pressure wheel drives the connecting block and the connecting spring to drive the driving rod. The driving rod drives the slide plate to slide under the action of the extrusion spring. The two ends of the slide plate contact the rack, so that the second support seat cannot slide. After the slide plate contacts under the action of the connecting spring, the pressure wheel can continue to slide, which facilitates the stable placement of the screw. After the screw is taken out, the pressure wheel is reset, and the slide plate is separated from the rack, which facilitates the sliding of the second support seat.

[0015] (2) The ball screw gap measuring device described in the present invention is driven by a fastening mechanism, which facilitates the control of the driving mechanism on the clamping mechanism, so that the clamping mechanism clamps the screw on the placement mechanism, so that the screw is stably installed on the placement mechanism and will not loosen, that is: after the screw is inserted into the placement groove, the top rod drives and controls the clamping block, and the clamping block drives the protective pad to extend into the placement groove to contact the screw. With the cooperation of the rubber block, the screw is clamped tightly and firmly. The rubber block has elasticity under the action of the resistance spring, which is beneficial to the wear protection of the screw. After the screw is placed stably, By rotating the turntable, the turntable drives the connecting shaft and the second gear to rotate, the second gear drives the first gear to rotate, and the first gear drives the rotating rod to rotate. Under the rotation of the rotating rod, the driving block and the driving plate move, which is conducive to driving and controlling the two push rods, so that the push rod squeezes the clamping block, and the clamping block clamps and tightens the lead screw. After adjusting the position through the second support seat, by rotating the screw, the screw drives the pressure block to contact the inner side of the driving plate under the action of the thread, so that the driving block contacts and limits the position inside the movable groove. After the driving block and the driving plate cannot slide, it is convenient for the driving plate to drive and control the driving block, thereby realizing the clamping work of the clamping block.

[0016] (3) The ball screw gap measuring device described in the present invention is conducive to the protection of the driving mechanism through the action of the protective mechanism, preventing the driving mechanism from loosening and causing the clamping mechanism to be unstable. That is: the latch pin is tightly in contact with the gear ring under the action of the reset spring, which is conducive to the turntable not rotating easily and the clamping block is tightly in contact. By pushing the push block, the push block drives the latch pin to separate from the gear ring under the action of the reset spring, thereby facilitating the rotation control of the turntable.

[0017] (4) The ball screw gap measuring device described in the present invention is conducive to measuring the ball screw gap through the installation of the measuring mechanism, so as to obtain the error for subsequent maintenance, that is: through the installation of the grating measuring instrument, it is conducive to the gap detection of the screw rod, and the insertion of the nut on the screw rod is facilitated by the action of the through groove. After the nut and the grating measuring instrument are in conflict, the cylinder is operated by connecting a certain pressure of air pressure. The cylinder pulls the grating measuring instrument through the cooperation of the buffer spring, thereby measuring the gap between the nut and the screw rod. Under the action of the buffer spring, the cylinder and the grating measuring instrument have elasticity to prevent the nut from being damaged by pulling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below with reference to the accompanying drawings and examples.

[0019] Figure 1 A schematic diagram of the overall structure of a preferred embodiment of a ball screw gap measuring device provided by the present invention;

[0020] Figure 2 for Figure 1 An enlarged schematic diagram of the structure of section A is shown;

[0021] Figure 3 This is a schematic diagram of the connection structure between the clamping block and the first support seat of the present invention;

[0022] Figure 4 Schematic diagram of the connection structure between the rotating rod and the base plate of the present invention;

[0023] Figure 5 for Figure 4 An enlarged schematic diagram of the structure of part B is shown;

[0024] Figure 6 for Figure 4 The enlarged schematic diagram of the C-section structure is shown;

[0025] Figure 7 for Figure 4 An enlarged schematic diagram of the D portion structure is shown;

[0026] Figure 8 This is a schematic diagram of the connection structure between the second support base and the base plate of the present invention;

[0027] Figure 9 It is a schematic diagram of the connection structure between the base plate and the grating measuring instrument of the present invention.

[0028] In the figure: 1. bottom plate; 2. placement mechanism; 201. first support seat; 202. second support seat; 203. placement slot; 204. slide slot; 205. clamping slot; 3. limiting mechanism; 301. slide plate; 302. pressure wheel; 303. connecting block; 304. connecting spring; 305. driving rod; 306. extrusion spring; 307. rack; 4. clamping mechanism; 401. rubber block; 402. resistance spring; 403. protective pad; 404. clamping block; 405. ejector rod; 5. Driving mechanism; 501, turntable; 502, rotating rod; 503, driving block; 504, driving plate; 505, first gear; 506, second gear; 507, connecting shaft; 508, movable groove; 6, fastening mechanism; 601, screw; 602, pressure block; 7, protective mechanism; 701, push block; 702, return spring; 703, bayonet; 704, gear ring; 8, measuring mechanism; 801, cylinder; 802, grating measuring instrument; 803, through groove; 804, buffer spring. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0030] like Figures 1-9 As shown, a ball screw gap measuring device described in the present invention includes a base plate 1, a placing mechanism 2 is installed on the base plate 1, a limiting mechanism 3 is installed on the placing mechanism 2, a clamping mechanism 4 is installed on the placing mechanism 2, a driving mechanism 5 is installed inside the base plate 1, a fastening mechanism 6 is installed on the placing mechanism 2, a protective mechanism 7 is installed on the base plate 1, and a measuring mechanism 8 is installed on the base plate 1.

[0031] Specifically, the placement mechanism 2 includes a first support seat 201, one end of the base plate 1 is vertically fixedly connected to the first support seat 201, and the other end of the base plate 1 is vertically connected to the second support seat 202, the bottom of the second support seat 202 is a "convex" structure, the bottom of the second support seat 202 is slidably connected to the base plate 1 through a slide groove 204 and a card groove 205, and a placement groove 203 is provided on the top of the first support seat 201 and the second support seat 202. The cooperation of the placement groove 203 with the first support seat 201 and the second support seat 202 is conducive to the placement of the screw rod, and the sliding of the second support seat 202 and the base plate 1 facilitates the placement of screw rods of different lengths, thereby improving the detection range.

[0032] Specifically, the limiting mechanism 3 includes a slide plate 301, a slide plate 301 is installed on the inner side of the bottom of the second support seat 202, and the slide plate is slidably connected to the inside of the second support seat 202 through a plurality of extrusion springs 306. The slide plate 301 is a "concave" shaped structure, and the bottom of the two ends of the slide plate 301 is a toothed structure. A driving rod 305 is vertically connected to the center of the top of the slide plate 301, and the driving rod 305 is slidably connected to the inside of the second support seat 202. The top of the driving rod 305 is installed with a connecting block 303 through a connecting spring 304. A pressure wheel 302 is rotatably connected to the connecting block 303, and the pressure wheel 302 extends into the placement groove 203. The pressure wheel 302 and the connecting block 303 are slidably connected to the inside of the second support seat 202. Two racks 307 are installed inside the bottom plate 1, and the two ends of the slide plate 301 are located at the top of the rack 307. The cam 304 is used to move the second support seat 202 to the left, and the second support seat 202 is locked. The cam 304 is used to move the second support seat 202 to the right, and the second support seat 202 is locked.

[0033] Specifically, the clamping mechanism 4 includes a rubber block 401, and the rubber block 401 is installed on the inner side of the top of the first support seat 201 and the second support seat 202. The two rubber blocks 401 are respectively slidably connected to the first support seat 201 and the second support seat 202 through the contact spring 402. The rubber block 401 extends into the interior of the placement groove 203. The first support seat 201 and the second support seat 202 are respectively slidably connected to the inside of the clamping block 404. A protective pad 403 is installed on the top of the clamping block 404. 3 extends into the placement groove 203, and the bottom of the clamping block 404 is rotatably connected to the push rod 405. After the screw is inserted into the placement groove 203, the push rod 405 drives the clamping block 404, and the clamping block 404 drives the protective pad 403 to extend into the placement groove 203 to resist the screw. With the cooperation of the rubber block 401, the screw is clamped tightly and firmly. The rubber block 401 has elasticity under the action of the resisting spring 402, which is beneficial to prevent the screw from wearing.

[0034] Specifically, the driving mechanism 5 includes a rotating rod 502, which is rotatably connected to the rotating rod 502 at the center of the bottom plate 1, and a first gear 505 is installed at one end of the rotating rod 502. The inside of one end of the bottom plate is rotatably connected to the second gear 506 through a connecting shaft 507. The first gear 505 is meshed with the second gear 506. The connecting shaft 507 extends to the outside of the bottom plate 1. A turntable 501 is installed on the connecting shaft 507. One end of the rotating rod 502 is threadedly connected to a driving block 503, and the bottom of one of the top rods 405 is rotatably connected to the driving block 503. The other end of the rotating rod 502 is threadedly connected to a driving plate 504, and the driving plate 504 is slidably connected to the driving block through a movable groove 508. 503, the bottom of the other push rod 405 is rotatably connected to the driving block 503, and the angle between the push rod 405 and the driving block 503 is 45 degrees. After the screw rod is placed and stabilized, the turntable 501 is rotated, and the turntable 501 drives the connecting shaft 507 and the second gear 506 to rotate, and the second gear 506 drives the first gear 505 to rotate, and the first gear 505 drives the rotating rod 502 to rotate. Under the rotation of the rotating rod 502, the driving block 503 and the driving plate 504 are moved, which is conducive to the two push rods 405 being driven and controlled, so that the push rod 405 squeezes the clamping block 404, and realizes the clamping and tightening of the screw rod by the clamping block 404.

[0035] Specifically, the fastening mechanism 6 includes a pressure block 602, one of which is slidably connected to the inside of the driving block 503, and the bottom of the pressure block 602 extends to the outside of the driving block 503 and contacts the driving plate 504. The driving block 503 is vertically threaded with a screw 601, and the screw 601 extends to the outside of the second support seat 202. The screw 601 is slidably connected to the second support seat 202, and the bottom of the screw 601 is rotatably connected to the pressure block 602. After the second support seat 202 adjusts its position, by rotating the screw 601, the screw 601 drives the pressure block 602 to contact the inner side of the driving plate 504 under the action of the thread, so that the driving block 503 is contacted and limited inside the movable groove 508. After the driving block 503 and the driving plate 504 cannot slide, it is convenient for the driving plate 504 to drive and control the driving block 503, thereby realizing the clamping work of the clamping block 404.

[0036] When the locking cam 703 is unlocked, the locking cam 703 is unlocked, and the locking cam 703 is unlocked, so that the locking cam 703 can be unlocked.

[0037] Specifically, the measuring mechanism 8 includes a cylinder 801, the base plate 1 is detachably connected to the cylinder 801, and the side of the base plate 1 is detachably connected to a grating measuring instrument 802. The bottom of one end of the grating measuring instrument 802 is slidably connected to the base plate 1. One end of the grating measuring instrument 802 is provided with a through slot 803. The driving shaft of the cylinder 801 is slidably connected to the inside of one end of the grating measuring instrument 802 through a buffer spring 804. The installation of the grating measuring instrument 802 is conducive to the gap detection of the screw rod. The through slot 803 facilitates the insertion of the nut on the screw rod. After the nut contacts the grating measuring instrument 802, the air pressure of a certain pressure is connected to make the cylinder 801 work. The cylinder 801 pulls the grating measuring instrument 802 through the cooperation of the buffer spring 804, thereby measuring the gap between the nut and the screw rod. The buffer spring 804 makes the cylinder 801 and the grating measuring instrument 802 elastic to prevent the nut from being damaged by pulling.

[0038] When the present invention is in use, first, the placement groove 203 cooperates with the first support seat 201 and the second support seat 202, which is conducive to the placement of the screw rod. The sliding of the second support seat 202 and the bottom plate 1 facilitates the placement of screw rods of different lengths, thereby improving the detection range. The slide plate 301 is separated from the rack 307 under the action of the extrusion spring 306, which facilitates the sliding position of the second support seat 202. After the screw rod is inserted into the placement groove 203, the screw rod contacts and squeezes the pressure wheel 302, and the pressure wheel 302 drives the connecting block 303 and the connecting spring 304 to drive the driving rod 305. The driving rod 305 drives the slide plate 301 to slide under the action of the extrusion spring 306. The two ends of the slide plate 301 contact the rack 307, thereby making the second support seat 202 slide. After the second support seat 202 cannot slide, the sliding plate 301 is resisted by the action of the connecting spring 304, and the pressure wheel 302 can continue to slide, which is convenient for the screw rod to be placed stably. After the screw rod is taken out, the pressure wheel 302 is reset, and the sliding plate 301 is separated from the rack 307, which is convenient for the second support seat 202 to slide. After the screw rod is inserted into the placement groove 203, the driving control of the clamping block 404 by the top rod 405 is carried out. The clamping block 404 drives the protective pad 403 to extend into the placement groove 203 to resist the screw rod. With the cooperation of the rubber block 401, the screw rod is clamped tightly and firmly. The rubber block 401 is made elastic under the action of the resisting spring 402, which is beneficial to the wear prevention of the screw rod. After the screw rod is placed stably, the turntable 501 is rotated. 01 drives the connecting shaft 507 and the second gear 506 to rotate, the second gear 506 drives the first gear 505 to rotate, and the first gear 505 drives the rotating rod 502 to rotate. Under the rotation of the rotating rod 502, the driving block 503 and the driving plate 504 move, which is conducive to the two push rods 405 being driven and controlled, so that the push rod 405 squeezes the clamping block 404, and realizes the clamping and tightening of the screw rod by the clamping block 404. After adjusting the position through the second support seat 202, by rotating the screw rod 601, the screw 601 drives the pressing block 602 to contact the inner side of the driving plate 504 under the action of the thread, so that the driving block 503 is limited in the internal conflict of the movable groove 508. After the driving block 503 and the driving plate 504 cannot slide, it is convenient for the driving plate 504 to press the driving block 50 3 drive control, realizes the clamping work of the clamping block 404, and the latch pin 703 is tightly in contact with the gear ring 704 under the action of the return spring 702, which is conducive to the turntable 501 not rotating easily and the latching block 404 is tightly in contact. By pushing the push block 701, the push block 701 drives the latch pin 703 to break away from the action of the return spring 702 and separate from the gear ring 704, thereby facilitating the rotation control of the turntable 501. The installation of the grating measuring instrument 802 is conducive to the gap detection of the lead screw. The action of the through slot 803 is conducive to the insertion of the nut on the lead screw. After the nut is in contact with the grating measuring instrument 802, the cylinder 801 is operated by connecting a certain pressure of air pressure, and the cylinder 801 pulls the grating measuring instrument 802 through the cooperation of the buffer spring 804.In this way, the gap between the nut and the screw rod can be measured. Under the action of the buffer spring 804, the cylinder 801 and the grating measuring instrument 802 have elasticity to prevent the nut from being damaged by pulling.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0040] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A ball screw gap measuring device, characterized in that: The invention comprises a base plate (1), a placing mechanism (2) is installed on the base plate (1), a limiting mechanism (3) is installed on the placing mechanism (2), a clamping mechanism (4) is installed on the placing mechanism (2), a driving mechanism (5) is installed inside the base plate (1), a fastening mechanism (6) is installed on the placing mechanism (2), a protective mechanism (7) is installed on the base plate (1), and a measuring mechanism (8) is installed on the base plate (1); The placement mechanism (2) comprises a first support seat (201), one end of the base plate (1) is vertically fixedly connected to the first support seat (201), the other end of the base plate (1) is vertically connected to the second support seat (202), the bottom of the second support seat (202) is a "convex"-shaped structure, the bottom of the second support seat (202) is slidably connected to the base plate (1) via a sliding groove (204) and a clamping groove (205), and the tops of the first support seat (201) and the second support seat (202) are provided with a placement groove (203); The limiting mechanism (3) includes a slide plate (301), the slide plate (301) is installed on the inner side of the bottom of the second support seat (202), the slide plate (301) is slidably connected to the inside of the second support seat (202) through a plurality of extrusion springs (306), the slide plate (301) is a "concave"-shaped structure, the bottom of both ends of the slide plate (301) is a tooth-shaped structure, and a driving rod (305) is vertically connected to the center of the top of the slide plate (301), and the driving rod (305) is connected to the second support seat (202). ) is slidably connected inside, a connecting block (303) is installed on the top of the driving rod (305) through a connecting spring (304), a pressure wheel (302) is rotatably connected to the connecting block (303), and the pressure wheel (302) extends to the inside of the placement groove (203), and the pressure wheel (302) and the connecting block (303) are slidably connected inside the second support seat (202), two racks (307) are installed inside the bottom plate (1), and the two ends of the slide plate (301) are located on the top of the racks (307).

2. The ball screw gap measuring device according to claim 1, characterized in that: The clamping mechanism (4) includes a rubber block (401), and the rubber block (401) is installed on the inner side of the top of the first support seat (201) and the second support seat (202). The two rubber blocks (401) are respectively slidably connected to the inside of the first support seat (201) and the second support seat (202) through the resistance spring (402). The rubber block (401) extends to the inside of the placement groove (203), and the first support seat (201) and the second support seat (202) are respectively slidably connected to the inside of the clamping block (404).

3. The ball screw gap measuring device according to claim 2, characterized in that: A protective pad (403) is installed on the top of the clamping block (404), and the protective pad (403) extends into the interior of the placement groove (203). The bottom of the clamping block (404) is rotatably connected to a push rod (405).

4. The ball screw gap measuring device according to claim 3, characterized in that: The driving mechanism (5) comprises a rotating rod (502), the rotating rod (502) being rotatably connected to the center of the bottom plate (1), a first gear (505) being installed at one end of the rotating rod (502), a second gear (506) being rotatably connected to the inside of one end of the bottom plate (1) via a connecting shaft (507), the first gear (505) being meshed with the second gear (506), the connecting shaft (507) extending to the outside of the bottom plate (1), one end of the rotating rod (502) being threadedly connected to a driving block (503), the bottom of one of the top rods (405) being rotatably connected to the driving block (503), the other end of the rotating rod (502) being threadedly connected to a driving plate (504), the driving plate (504) being slidably connected to the driving block (503) via a movable groove (508), and the bottom of the other top rod (405) being rotatably connected to the driving block (503).

5. The ball screw gap measuring device according to claim 4, characterized in that: A turntable (501) is mounted on the connecting shaft (507), and the included angle between the push rod (405) and the driving block (503) is 45 degrees.

6. The ball screw gap measuring device according to claim 4, characterized in that: The fastening mechanism (6) includes a pressure block (602), wherein one of the driving blocks (503) is slidably connected to the inside of the pressure block (602), the bottom of the pressure block (602) extends to the outside of the driving block (503) and contacts the driving plate (504), the driving block (503) is vertically threaded with a screw rod (601), the screw rod (601) extends to the outside of the second support seat (202), the screw rod (601) is slidably connected to the second support seat (202), and the bottom of the screw rod (601) is rotatably connected to the pressure block (602).

7. The ball screw gap measuring device according to claim 5, characterized in that: The protection mechanism (7) includes a toothed ring (704), a toothed ring (704) is installed on the side wall of the turntable (501), a latch (703) is installed inside the bottom plate (1), the latch (703) is slidably connected to the inside of the bottom plate (1) through a return spring (702), the latch (703) is an "L"-shaped structure, the top of the latch (703) extends to the outside of the bottom plate (1) and contacts the toothed ring (704), and one end of the bottom of the latch (703) extends to the outside of the bottom plate (1), and a push block (701) is installed on the latch (703).

8. The ball screw gap measuring device according to claim 1, characterized in that: The measuring mechanism (8) includes a cylinder (801), the cylinder (801) is detachably connected to the base plate (1), a grating measuring instrument (802) is detachably connected to one side of the base plate (1), the bottom of one end of the grating measuring instrument (802) is slidably connected to the base plate (1), a through groove (803) is provided at one end of the grating measuring instrument (802), and a driving shaft of the cylinder (801) is slidably connected to the inside of one end of the grating measuring instrument (802) via a buffer spring (804).

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