Guide rail precision detection device for numerical control machine tool

Abstract

The invention discloses a numerical control machine tool guide rail precision detection device which is used for detecting a linear guide rail horizontally placed on a workbench, a sliding block is movably arranged on the linear guide rail, and the numerical control machine tool guide rail precision detection device comprises a sliding seat movably arranged on the workbench; the suspension seat is suspended above the linear guide rail and is movably connected with the sliding seat in a lifting manner; the sliding part is slidably connected to the lower end of the suspension seat; one end of the swing part is hinged to the sliding part, and the other end is fixedly provided with a detection rod. Under the movement adjustment of the sliding piece, when the swing piece is located at the first position, the detection rod just vertically keeps the detection end to touch the top face of the sliding block, so that vertical precision detection of the linear guide rail is achieved, and when the swing piece is located at the second position, the swing piece swings downwards and inclines, and the detection rod keeps the detection end to touch the side face of the sliding block. Therefore, transverse precision detection of the linear guide rail is realized, and multidirectional detection without changing the position of the linear guide rail is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of numerical control machine tools, and particularly relates to a device for detecting the accuracy of the guide rails of a numerical control machine tool. Background Art

[0002] A numerical control machine tool is an automated machine tool equipped with a program control system. It can make the machine tool act and process parts according to the pre-programmed program. Among them, the guide rail is an important component of the numerical control machine tool, mainly providing a guiding function and bearing capacity for the moving parts. However, in order to ensure the machining accuracy, motion stability, and reliability of the numerical control machine tool, the guide rails on the numerical control machine tool need to be regularly inspected for accuracy. This can ensure that the dimensions of the machined parts are accurate and the surface quality is qualified. Among them, a device for detecting the accuracy of the guide rails of a numerical control machine tool is required for the accuracy detection of the guide rails of the numerical control machine tool.

[0003] Patent document CN118328805A discloses a device for detecting the accuracy of the guide rails of a numerical control machine tool on July 12, 2024. The technical solution thereof includes: an auxiliary mechanism, on which a detection mechanism is arranged. The detection mechanism includes a first rectangular block, a first mounting seat, a controller, a placement groove, and two electric push rods. A first motor is installed on the first mounting seat, a second motor is installed on the second mounting seat, and an electric micrometer is installed on the upper side of the connecting frame. The beneficial effect is that: by setting the detection mechanism, continuous detection can be carried out on the top and side of the guide rail body on the numerical control machine tool, that is, it is not necessary for the device for detecting the accuracy of the guide rail to manually adjust the position of the guide rail body after the flatness detection of the top of the guide rail body is completed, and then carry out the side detection of the guide rail body, which reduces the workload of the staff and improves work efficiency, improves the use effect of the device for detecting the accuracy of the guide rails of the numerical control machine tool, and also improves the use efficiency of the device for detecting the accuracy of the guide rails of the numerical control machine tool.

[0004] As in the prior art of the above patent, the important detection targets of the linear guide rail are the vertical and horizontal accuracy detections of the linear guide rail. At present, the automation of the detection device still requires the two-direction detections to be carried out step by step. Among them, the linear guide rail needs to be flipped or moved, which brings trouble to the detection process. Therefore, there is an urgent need for a device for detecting the accuracy of the guide rails of a numerical control machine tool to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a device for detecting the accuracy of the guide rails of a numerical control machine tool to solve the above deficiencies in the prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A numerical control machine tool guide rail accuracy detection device, which is used to detect a linear guide rail placed horizontally on a workbench, a slider is movably arranged on the linear guide rail, including: a slide seat, which is movably arranged on the workbench; a suspension seat, which is suspended above the linear guide rail and is movably connected to the slide seat for lifting and lowering; a sliding member, which is slidably connected to the lower end of the suspension seat; a swing member, one end of which is hinged to the sliding member, and the other end of which is fixedly provided with a detection rod, at both ends of the sliding member's movable stroke, the swing member has a first position in a horizontal state, at which the detection end of the detection rod touches the top surface of the slider, and the swing member also has a second position in a downward swinging tilted state, at which the detection end of the detection rod touches the side surface of the slider; a laser displacement sensor for positioning the linear guide rail is arranged on the workbench, and there are two laser displacement sensors, which are arranged on the same side of the linear guide rail to correspond to the two ends of the linear guide rail in a vertical direction.

[0008] Preferably, a sliding groove is provided at the lower end of the suspension seat, the sliding member is movably connected in the sliding groove, one end of the sliding groove passes through the side wall of the suspension seat to form an opening, and the swing member can be extended out of the opening.

[0009] Preferably, a supporting member is provided at the opening of the sliding groove corresponding to the side wall of the suspension seat, a magnetic attraction strip is provided on the supporting member, and the swinging member is made of a magnetically attractive material.

[0010] Preferably, two opposing toggle members are movably provided on the suspension seat, the distance between the two toggle members is kept fixed and they are arranged one in front and one behind corresponding to the moving direction of the slider, and a linkage component for linking the sliding member and the toggle member is provided in the suspension seat.

[0011] Preferably, a guide rod movably penetrating the toggle member is fixedly provided on the suspension seat, a connecting rod movably penetrating the suspension seat, and two ends of the connecting rod are respectively fixedly connected to the two toggle members.

[0012] Preferably, the linkage assembly includes a turntable rotatably arranged in a suspension seat, an eccentric rod is fixedly arranged at the lower end of the turntable, a linkage groove matching the eccentric rod is arranged on the sliding member, a gear is coaxially connected to the upper end of the turntable, and a rack meshing with the gear is arranged on the connecting rod.

[0013] Preferably, a limit assembly for limiting the movement of the connecting rod is provided in the suspension seat, and the limit assembly cancels the limit when the slide seat moves to both ends of the moving stroke.

[0014] Preferably, the limiting assembly comprises a lifting slot arranged in the suspension seat, a limiting block is elastically and movably arranged in the lifting slot, and two limiting slots matching the limiting block and arranged symmetrically are arranged on the connecting rod.

[0015] Preferably, an extrusion hole is provided on the limiting block, a through hole is movably provided on the suspension seat, the extrusion hole corresponds to the through hole when the limiting block is embedded in the limiting groove, and through rods matching the through holes are fixedly provided at both ends of the workbench along the moving direction of the sliding seat, and the end of the through rod is in wedge fit with the extrusion hole.

[0016] Preferably, an elastic member is provided on the inner top surface of the lifting groove, and the elastic member is configured to push the limiting block downward.

[0017] In the above technical solution, the beneficial effect of the present invention is:

[0018] In the numerical control machine tool guide rail precision detection device, by setting a swing member to connect the detection rod, when the swing member is in the first position under the movement adjustment of the sliding member, the end of the swing member connecting the detection rod is directly above the slider, and the detection rod is just vertical to keep the detection end touching the top surface of the slider. Thus, during the subsequent movement with the slider, the vertical precision detection of the linear guide rail can be realized. When the swing member is in the second position, the end of the swing member connecting the detection rod moves beyond the direct above of the slider, and the swing member swings downward and obliquely, so that the detection rod keeps the detection end touching the side surface of the slider in an inclined manner. Thus, during the subsequent movement with the slider, the horizontal precision detection of the linear guide rail can be realized. The above realizes multi-directional detection without changing the position of the linear guide rail.

[0019] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not intended to limit the present disclosure.

[0020] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a complete disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings.

[0022] Figure 1 It is a schematic diagram of the overall structure provided by the embodiment of the present invention;

[0023] Figure 2 Provided by the embodiment of the present invention Figure 1 The enlarged schematic diagram of part A therein;

[0024] Figure 3 It is a schematic diagram of the internal structure of the suspension seat provided by the embodiment of the present invention;

[0025] Figure 4The embodiment of the present invention provides Figure 3 A schematic diagram of the enlarged structure at B in the middle;

[0026] Figure 5 A schematic diagram of a side cross-sectional structure of a swing member in a first position provided by an embodiment of the present invention;

[0027] Figure 6 The embodiment of the present invention provides Figure 5 Schematic diagram of the enlarged structure at C in the middle;

[0028] Figure 7 A schematic diagram of a side cross-sectional structure of a swing member in a second position provided by an embodiment of the present invention;

[0029] Figure 8 The embodiment of the present invention provides Figure 7 Schematic diagram of the enlarged structure at D in the middle;

[0030] Figure 9 A schematic diagram of a front cross-sectional structure of a perforation provided in an embodiment of the present invention;

[0031] Figure 10 The embodiment of the present invention provides Figure 9 Schematic diagram of the enlarged structure at E in the middle.

[0032] Description of reference numerals:

[0033] 1. Workbench; 2. Linear guide; 3. Slider; 4. Sliding seat; 5. Suspension seat; 6. Sliding member; 7. Swinging member; 8. Detection rod; 9. Sliding groove; 10. Supporting member; 11. Magnetic strip; 12. Toggle member; 13. Guide rod; 14. Connecting rod; 15. Turntable; 16. Eccentric rod; 17. Linkage groove; 18. Gear; 19. Rack; 20. Lifting groove; 21. Limit block; 22. Limit groove; 23. Extrusion hole; 24. Perforation; 25. Through rod; 26. Elastic member. DETAILED DESCRIPTION

[0034] 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.

[0035] See also Figure 1-10, a guide rail precision detection device provided by an embodiment of the present invention, which is used to detect a linear guide rail 2 horizontally placed on a workbench 1. A slider 3 is movably arranged on the linear guide rail 2, and it includes: a slide base 4, which is movably arranged on the workbench 1; a suspension base 5, which is suspended above the linear guide rail 2 and is connected to the slide base 4 in a lifting and moving manner; a sliding member 6, which is slidably connected to the lower end of the suspension base 5; a swinging member 7, one end of which is hinged to the sliding member 6, and the other end is fixedly provided with a detection rod 8. At both ends of the moving stroke of the sliding member 6, the swinging member 7 has a first position in a horizontal state, at this time the detection end of the detection rod 8 touches the top surface of the slider 3, and the swinging member 7 also has a second position in a downward inclined state, at this time the detection end of the detection rod 8 touches the side surface of the slider 3; a laser displacement sensor for positioning the linear guide rail 2 is arranged on the workbench 1. There are two laser displacement sensors, which are arranged on the same side of the linear guide rail 2 and correspond to both ends of the linear guide rail 2 in the vertical direction.

[0036] Specifically, the upper surface of the workbench 1 is set horizontally flat; the emitting ends of the two laser displacement sensors are irradiated horizontally, and the emitted light is perpendicular to the extension direction of the linear guide 2. By detecting whether there is a change through the sensors, it can be used to monitor the displacement of the linear guide 2 during the precision detection process driven by the slider 3, avoiding abnormal detection data caused by improper positioning of the linear guide 2; a positioning member for positioning the linear guide 2 is also provided on the workbench 1, and the positioning member is preferably a magnetic attracting member or a fastening member; the slider 3 slides on the linear guide 2 with damping; the sliding seat 4 slides along the horizontal linear direction, and the positioning of the linear guide 2 is set such that the length direction of the linear guide 2 is parallel to the moving direction of the sliding seat 4; the sliding seat 4 is controlled by the servo system to move; the slider 3 and the sliding seat 4 move synchronously to achieve detection; the lifting of the suspension seat 5 is used to enter or exit the detection height, thus facilitating the placement and removal of the linear guide 2; the moving direction of the sliding member 6 is horizontal and perpendicular to the length direction of the linear guide 2; the swinging member 7 is connected to one end in the moving direction of the sliding member 6, and the rotation axis of the swinging member 7 is parallel to the moving direction of the sliding seat 4; when the swinging member 7 is in the first position, it is coplanar and flush with the upper and lower surfaces of the sliding member 6; the detection rod 8 is vertically connected to the swinging member 7. When the swinging member 7 is in the first position, the detection rod 8 is vertically arranged with the detection end facing downwards. When the swinging member 7 is in the second position, the end of the swinging member 7 connected to the detection rod 8 swings obliquely downwards, so that the horizontal distance of the detection end of the detection rod 8 relative to the rotation axis of the swinging member 7 decreases, and the vertical distance decreases. Furthermore, when the free end of the swinging member 7 moves horizontally beyond the range directly above the slider 3, the detection rod 8 can abut the detection end against the side surface of the slider 3. In the actual use of this technical solution, under the movement adjustment of the sliding member 6, when the sliding member 6 drives the swinging member 7 to move to the first position, the swinging member 7 is horizontal, and the end of the swinging member 7 connected to the detection rod 8 is directly above the slider 3, and the detection rod 8 is just vertically held to touch the top surface of the slider 3. Thus, during the subsequent movement with the slider 3, the vertical precision detection of the linear guide 2 can be realized. When the sliding member 6 drives the swinging member 7 to move to the second position, the end of the swinging member 7 connected to the detection rod 8 moves beyond the range directly above the slider 3, and the swinging member 7 swings obliquely downwards, so that the detection rod 8 holds the detection end to touch the side surface of the slider 3 in an inclined manner. Thus, during the subsequent movement with the slider 3, the horizontal precision detection of the linear guide 2 can be realized. The above realizes multi-directional detection without changing the position of the linear guide 2.

[0037] Compared with the prior art, a numerical control machine tool guide rail precision detection device proposed in an embodiment of the present invention connects a detection rod 8 by setting a swing member 7. Under the movement adjustment of a sliding member 6, when the swing member 7 is in the first position, the end of the swing member 7 connecting the detection rod 8 corresponds to directly above the slider 3, and the detection rod 8 is just vertically held to touch the top surface of the slider 3. Thus, during the subsequent movement with the slider 3, the vertical precision detection of the linear guide rail 2 can be realized. When the swing member 7 is in the second position, the end of the swing member 7 connecting the detection rod 8 moves beyond directly above the slider 3, and the swing member 7 swings downward and obliquely, so that the detection rod 8 holds the detection end to touch the side surface of the slider 3 in an inclined manner. Thus, during the subsequent movement with the slider 3, the lateral precision detection of the linear guide rail 2 can be realized. The above realizes multi-directional detection without changing the position of the linear guide rail 2.

[0038] As a preferred technical solution of this embodiment, a sliding groove 9 is provided at the lower end of the suspension seat 5. The sliding member 6 is movably connected in the sliding groove 9. One end of the sliding groove 9 penetrates through the side wall of the suspension seat 5 to form an opening. The swing member 7 can be arranged to extend out through the opening. Specifically, the sliding member 6 horizontally moves in the sliding groove 9, and the opening side of the sliding groove 9 is arranged on the side away from the sliding seat 4. When the swing member 7 extends out of the opening and even the rotating shaft extends out, the free end of the swing member 7 automatically swings downward under gravity. When the rotating shaft of the swing member 7 is in the sliding groove 9, the free end of the swing member 7 is restricted by the inner bottom surface of the sliding groove 9 to inhibit the downward swing. Thus, when the rotating shaft of the swing member 7 is deep in the sliding groove 9, the swing member 7 is also in a horizontal state. A groove communicating with the sliding groove 9 is provided on the bottom surface of the suspension seat 5, and the detection rod 8 extends downward through the groove.

[0039] As a preferred technical solution of this embodiment, a supporting member 10 is provided on the side wall of the suspension seat 5 corresponding to the opening of the sliding groove 9. A magnetic attraction strip 11 is provided on the supporting member 10. The swing member 7 is made of a magnetizable material. Specifically, the upper surface of the supporting member 10 forms a transition with the inner bottom surface of the sliding groove 9. The supporting member 10 extends obliquely downward, and the inclination angle is preferably 30° - 60° relative to the horizontal plane. When the swing member 7 is in the second position, its rotating shaft extends out of the sliding groove 9, so that its free end swings downward obliquely and is supported by the supporting member 10 at a corresponding angle. At the same time, the magnetic attraction strip 11 adsorbs the swing member 7 to stabilize the position, that is, to stabilize the position of the detection rod 8 and keep the detection end abutted against the side surface of the slider 3. During the detection process, there is no need to worry about the influence of the swing of the swing member 7 on the detection precision. When the swing member 7 moves towards the first position, the downward swing inhibition generated by the swing member 7 being received into the sliding groove 9 can make the swing member 7 automatically break away from the adsorption of the magnetic attraction strip 11.

[0040] In another embodiment proposed by the present invention, two opposite toggling members 12 are movably arranged on the suspension base 5. The distance between the two toggling members 12 is kept fixed and they are arranged one in front of and the other behind corresponding to the moving direction of the slider 3. A linkage assembly for linking the sliding member 6 and the toggling member 12 is arranged in the suspension base 5. Specifically, during the detection process, the lower end of the toggling member 12 corresponds to the horizontal height range where the slider 3 is located as the height of the suspension base 5 decreases, and is within the moving range of the slider 3; the distance between the lower ends of the two toggling members 12 is set to be greater than the length in the moving direction of the slider 3; the suspension base 5 is lowered so that the slider 3 is located between the two toggling members 12. Then, as the suspension base 5 moves downward with the sliding base 4, the toggling member 12 is driven to move, and one of the toggling members 12 will push or be ready to push the slider 3; since the slider 3 moves on the linear guide rail 2 with damping, during the reaction time from when the toggling member 12 contacts the slider 3 to when it pushes the slider 3, the toggling member 12 may move relative to the suspension base 5, especially during the reverse movement of the suspension base 5. This relative movement of the toggling member 12 relative to the suspension base 5 is used to drive the sliding member 6 to move through the linkage assembly.

[0041] As a preferred technical solution of this embodiment, a guide rod 13 that movably penetrates the toggling member 12 is fixedly arranged on the suspension base 5. A connecting rod 14 is movably penetrated through the suspension base 5. Both ends of the connecting rod 14 are fixedly connected to the two toggling members 12 respectively. Specifically, the extending direction of the guide rod 13 is parallel to the moving direction of the sliding base 4; the moving direction of the connecting rod 14 is parallel to the moving direction of the sliding base 4; the arrangement of the connecting rod 14 defines the relative positions of the two toggling members 12.

[0042] As a preferred technical solution of this embodiment, the linkage assembly includes a turntable 15 rotatably arranged in the suspension base 5. An eccentric rod 16 is fixedly arranged at the lower end of the turntable 15. A linkage groove 17 that matches the eccentric rod 16 is arranged on the sliding member 6. A gear 18 is coaxially connected to the upper end of the turntable 15. A rack 19 that meshes with the gear 18 is arranged on the connecting rod 14. Specifically, the turntable 15 drives the eccentric rod 16 to perform a circular motion. The eccentric rod 16 slides relatively in the linkage groove 17, and the sliding direction is perpendicular to the moving direction of the sliding member 6 on the same horizontal plane. Thus, the rotation of the turntable 15 drives the sliding member 6 to move through the eccentric rod 16 and the linkage groove 17; the maximum moving range of the connecting rod 14 corresponds to a 180° rotation of the turntable 15, and both ends of the moving range of the connecting rod 14 correspond to both ends of the moving range of the sliding member 6. In actual use, the relative movement of the toggling member 12 relative to the suspension base 5 drives the connecting rod 14 to move relative to the suspension base 5. The connecting rod 14 drives the rack 19 to meshingly drive the gear 18. The gear 18 drives the turntable 15 to rotate. The turntable 15 drives the eccentric rod 16 to rotate to drive the sliding member 6 to move through the linkage groove 17, thereby driving the swinging member 7 to switch between the first position and the second position.

[0043] In actual use of the above embodiment, when the slider 3 is at one end of the length to be detected of the linear guide rail 2, the suspension seat 5 drops corresponding to the slider 3, so that the slider 3 is between the two toggle members 12. Then, the slide seat 4 drives the suspension seat 5 to move, and the suspension seat 5 drives the toggle member 12 to move. Then, in this moving direction, the toggle member 12 at the rear contacts and starts to push the slider 3. Since the slider 3 has a damping activity, the toggle member 12 of the slider 3 is pushed to move to the farthest position relative to the suspension seat 5 and cannot move further, and then moves with the suspension seat 5 to push the slider 3 to move. At this time, the swing member 7 is in the first position, that is, the detection end of the detection rod 8 keeps touching the top surface of the slider 3 for detection, thereby realizing the detection of the vertical accuracy of the linear guide 2; when the slide 4 moves a complete distance in a single direction, the slide 4 starts to reverse direction, so the toggle member 12 on the other side repeats the above process before pushing the slider 3. During this process, the swing member 7 is switched to the second position through linkage, that is, the detection end of the detection rod 8 keeps touching the side of the slider 3, and then the lateral accuracy of the linear guide 2 is detected during the movement of the slide 4 to push the slider 3 in the reverse direction.

[0044] In the above embodiment, after the accuracy of one direction is completely detected, it is necessary to repeat the detection and identification of the deviated part, which causes the slide 4 to turn back before reaching the end of the moving stroke, thereby causing the swing member 7 to switch positions prematurely. The detection rod 8 cannot smoothly maintain the detection state during the mid-way turning process. In this regard, the following embodiment is proposed to solve this problem.

[0045] In another embodiment of the present invention, a limit assembly for limiting the movement of the connecting rod 14 is provided in the suspension seat 5. The limit assembly cancels the limit when the slide seat 4 moves to the two ends of the moving stroke. Specifically, the limit assembly limits the connecting rod 14 so that the connecting rod 14 cannot move relative to the suspension seat 5. Then, under the linkage effect, the sliding member 6 is kept in a fixed position, which also makes the swing member 7 fixed in position and the detection state of the detection rod 8 fixed. When the slide seat 4 moves to the two ends of the moving stroke, the detection state of the detection rod 8 needs to be switched, and the limit assembly cancels the limit on the connecting rod 14 during the state switching process of the detection rod 8. The setting of the limit assembly solves the problem that the detection rod 8 cannot maintain the detection state during the mid-way return process.

[0046] As a preferred technical solution of this embodiment, the limit assembly includes a lifting groove 20 arranged in the suspension seat 5, a limit block 21 is elastically and movably arranged in the lifting groove 20, and two limit grooves 22 matching the limit block 21 and symmetrically arranged are arranged on the connecting rod 14. Specifically, an elastic member 26 is arranged on the top surface of the lifting groove 20, and the elastic member 26 keeps the limit block 21 pushed downward; the elastic member 26 is preferably a spring; when the limit groove 22 corresponds to the limit block 21, the limit block 21 moves downward under the action of the elastic member 26 and remains embedded in the corresponding limit groove 22; the two limit grooves 22 correspond to the two ends of the moving range of the connecting rod 14, that is, at the two ends of the moving range of the connecting rod 14, there is a limit groove 22 corresponding to the limit block 21.

[0047] As a preferred technical solution of this embodiment, an extrusion hole 23 is provided on the limit block 21, and a through hole 24 is movably provided on the suspension seat 5. The extrusion hole 23 corresponds to the through hole 24 when the limit block 21 is embedded in the limit groove 22. Both ends of the workbench 1 along the moving direction of the slide seat 4 are fixedly provided with a through rod 25 matching the through hole 24, and the end of the through rod 25 is wedge-matched with the extrusion hole 23. Specifically, the opening directions of the extrusion hole 23 and the through hole 24 are both arranged parallel to the moving direction of the slide seat 4; the through hole 24 is arranged through the suspension seat 5, and both ends are open to insert the through rod 25; when the limit block 21 is embedded in the limit groove 22, the height is reduced, so that a part of the extrusion hole 23 corresponds to the through hole 24; the end of the through rod 25 is provided with an inclined surface, and the lower side is a pointed end, thereby, when inserting the through hole After the slide 4 is moved to one end of the moving stroke, the length of the through rod 25 passing through the extrusion hole 23 is greater than the maximum distance that the connecting rod 14 moves relative to the suspension seat 5, that is, in the moving range where the through rod 25 does not disengage from the extrusion hole 23, the reversing movement of the slide 4 enables the connecting rod 14 to move to the other end position relative to the suspension seat 5. The distance required for the connecting rod 14 to switch to the other end position relative to the suspension seat 5 is met, that is, the swing member 7 can smoothly switch between the first position and the second position, and the detection state of the detection rod 8 can be smoothly switched.

[0048] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A CNC machine tool guide rail accuracy detection device, which is used to detect a linear guide rail (2) placed horizontally on a workbench (1), a slider (3) being movably arranged on the linear guide rail (2), characterized in that: include: A slide seat (4) movably arranged on the workbench (1); A suspension seat (5) is suspended above the linear guide rail (2) and is movably connected to the slide seat (4) for lifting; A sliding member (6) is slidably connected to the lower end of the suspension seat (5); The swing member (7) has one end hinged to the sliding member (6) and a detection rod (8) fixedly arranged at the other end. At both ends of the movable stroke of the sliding member (6), the swing member (7) has a first position in a horizontal state, at which the detection end of the detection rod (8) touches the top surface of the slider (3). The swing member (7) also has a second position in a downwardly swung tilted state, at which the detection end of the detection rod (8) touches the side surface of the slider (3). The workbench (1) is provided with a laser displacement sensor for positioning the linear guide rail (2), wherein two laser displacement sensors are arranged on the same side of the linear guide rail (2) and correspond to the two ends of the linear guide rail (2) in a vertical direction.

2. The CNC machine tool guide rail accuracy detection device according to claim 1, characterized in that: A sliding groove (9) is provided at the lower end of the suspension seat (5), and the sliding member (6) is movably connected in the sliding groove (9). One end of the sliding groove (9) penetrates the side wall of the suspension seat (5) to form an opening, and the swing member (7) can extend out of the opening.

3. The CNC machine tool guide rail accuracy detection device according to claim 2, characterized in that: A supporting member (10) is provided at the opening of the sliding groove (9) corresponding to the side wall of the suspension seat (5), a magnetic attraction strip (11) is provided on the supporting member (10), and the swing member (7) is configured to be made of a magnetically attractive material.

4. The CNC machine tool guide rail accuracy detection device according to claim 1, characterized in that: Two opposing toggle members (12) are movably arranged on the suspension seat (5), the distance between the two toggle members (12) is kept fixed and they are arranged one in front of the other in the moving direction of the slider (3), and a linkage component for linking the sliding member (6) and the toggle member (12) is arranged in the suspension seat (5).

5. The CNC machine tool guide rail accuracy detection device according to claim 4, characterized in that: A guide rod (13) movably penetrating the toggle member (12) is fixedly arranged on the suspension seat (5), and a connecting rod (14) movably penetrating the suspension seat (5), wherein both ends of the connecting rod (14) are respectively fixedly connected to the two toggle members (12).

6. The CNC machine tool guide rail accuracy detection device according to claim 5, characterized in that: The linkage assembly comprises a turntable (15) rotatably arranged in a suspension seat (5), an eccentric rod (16) being fixedly arranged at the lower end of the turntable (15), a linkage groove (17) matching the eccentric rod (16) being arranged on the sliding member (6), a gear (18) being coaxially connected to the upper end of the turntable (15), and a rack (19) meshing with the gear (18) being arranged on the connecting rod (14).

7. The CNC machine tool guide rail accuracy detection device according to claim 5, characterized in that: A limiting component for limiting the movement of the connecting rod (14) is arranged in the suspension seat (5), and the limiting component cancels the limiting when the sliding seat (4) moves to both ends of the moving stroke.

8. The CNC machine tool guide rail accuracy detection device according to claim 7, characterized in that: The limit assembly comprises a lifting groove (20) arranged in the suspension seat (5), a limit block (21) is elastically and movably arranged in the lifting groove (20), and two limit grooves (22) matching the limit block (21) and arranged symmetrically are arranged on the connecting rod (14).

9. The CNC machine tool guide rail accuracy detection device according to claim 8, characterized in that: The limit block (21) is provided with an extrusion hole (23), and the suspension seat (5) is movably provided with a through hole (24). When the limit block (21) is embedded in the limit groove (22), the extrusion hole (23) corresponds to the through hole (24). Both ends of the workbench (1) along the moving direction of the slide seat (4) are fixedly provided with a through rod (25) matching the through hole (24), and the end of the through rod (25) is wedge-matched with the extrusion hole (23).

10. The CNC machine tool guide rail accuracy detection device according to claim 8, characterized in that: An elastic member (26) is disposed on the inner top surface of the lifting groove (20), and the elastic member (26) keeps the limit block (21) pushed downward.

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