Linear guide rail straightness detection device

Abstract

The invention belongs to the technical field of linear guide rail detection, and particularly discloses a linear guide rail straightness detection device which comprises a workbench, a mounting groove is formed in the top of the workbench, a mounting frame is fixedly connected to one side of the workbench, a detector body is arranged at the top of the mounting frame, a mounting plate is arranged above the mounting groove, and the detector body is arranged above the mounting plate. A reflecting mirror is embedded in one side, close to the detector body, of the mounting plate; by arranging the detector body, the reflecting mirror, the mounting plate, the connecting plate and the adjusting structure, the height of the detector body and the height of the reflecting mirror can be adaptively adjusted in the guide rail mounting process, follow-up adjustment by workers is not needed, operation is easy and convenient, interference factors of manual calibration are reduced, the detection efficiency is improved, and the detection cost is reduced. In addition, in the moving process of the reflecting mirror, the height position of the detector body can be stabilized, and the detection effect is effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of linear guide rail detection, and specifically discloses a linear guide rail straightness detection device. Background Art

[0002] Linear guides can be divided into three types: roller linear guides, cylindrical linear guides and ball linear guides. They are used to support and guide moving parts to perform reciprocating linear motion in a given direction. Rolling linear guides need to achieve good straightness during production. The straightness of linear guides is one of their quality inspection items, but the existing inspection method mainly uses a reflector installed on a slider on the surface of the linear guide, adjusting the height of the detector so that the laser can be accurately emitted and reflected on the reflector, and manually adjusting the position of the slider for inspection. This method has a large number of human interference factors. Summary of the invention

[0003] In view of this, the purpose of the present invention is to provide a linear guide straightness detection device to solve the problem of large human interference factors in existing detection methods.

[0004] To achieve the above purpose, the present invention provides a linear guide straightness detection device, comprising a workbench, a mounting groove is provided on the top of the workbench, a mounting frame is fixedly connected to one side of the workbench, a detector body is arranged on the top of the mounting frame, a mounting plate is arranged above the mounting groove, a reflector is embedded and installed on one side of the mounting plate close to the detector body, a connecting plate is fixedly connected to the bottom of the mounting plate, a driving structure located inside the mounting groove is arranged at the bottom of the connecting plate, and an adjustment structure is arranged at the bottom of the mounting frame;

[0005] Among them, the driving structure includes two fixed plates arranged on the inner wall of the mounting groove, and the opposite sides of the two fixed plates are provided with a shell slidingly connected to the inner wall of the workbench, the other end of the shell is rotatably connected to a roller slidingly connected to the inner wall of the workbench, and a motor is arranged on the other side of one of the rollers, and the inner wall of the shell is slidably connected to an adjusting rod, the other end of the adjusting rod passes through the shell and is fixedly connected to the surface of the adjacent fixed plate, and a first spring is fixedly connected between the surface of the adjusting rod and the inner wall of the shell.

[0006] In the above technical solution, preferably, L-rods are provided on the surfaces of the two fixing plates, one end of the L-rods is located between the two fixing plates, and the opposite sides of the two L-rods are rotatably connected with evenly distributed rotating columns.

[0007] In the above technical solution, preferably, the surfaces of the two fixing plates are fixedly connected with mounting seats, a bidirectional screw rod is rotatably connected between the two mounting seats, and the two L rods are threadedly connected to the surfaces of the bidirectional screw rod.

[0008] In the above technical solution, preferably, the adjustment structure includes a trigger block fixedly connected to the bottom of the connecting plate, the cross-sectional shape of the trigger block is a right-angled trapezoid, the inner wall of the trigger block is slidably connected with two symmetrically distributed mounting blocks, one end of the mounting block passes through the trigger block and is fixedly connected to the surface of the adjacent fixed plate, the inner wall of the trigger block is fixedly connected to a limiting rod, the mounting block is slidably connected to the surface of the limiting rod, and a second spring is fixedly connected between the mounting block and the inner wall of the trigger block.

[0009] In the above technical solution, preferably, the adjustment structure also includes a connecting block fixedly connected to one side of the mounting frame, an adjustment cavity is opened inside the connecting block, a trigger piston is slidably connected to the inner wall of the adjustment cavity, the upper end of the trigger piston passes through the connecting block and contacts with the bottom of the connecting plate, a third spring is fixedly connected between the surface of the trigger piston and the inner wall of the adjustment cavity, and the interior of the adjustment cavity is filled with hydraulic oil.

[0010] In the above technical solution, preferably, two symmetrically distributed mounting shells are fixedly connected to the bottom of the mounting frame, an adjusting piston is slidably connected to the inner wall of the mounting shell, the upper end of the adjusting piston passes through the mounting frame and is fixedly connected to an adjusting plate, the detector body is arranged on the top of the adjusting plate, a fifth spring is fixedly connected between the surface of the adjusting piston and the inner wall of the mounting shell, and the bottoms of the two mounting shells are connected by a conduit.

[0011] In the above technical solution, preferably, a connecting cavity is opened inside the connecting block, the other end of the conduit is connected to the interior of the connecting cavity, a flow guide pipe is connected to the interior of the connecting block, one end of the flow guide pipe is connected to the connecting cavity, and the other end of the flow guide pipe is connected to the regulating cavity, and the opening cross-section of the regulating cavity is twice the inner cross-section of the mounting shell.

[0012] In the above technical solution, preferably, the inner wall of the connecting cavity is slidably connected with a blocking block, the surface of the blocking block is fixedly connected with a trigger rod, a fourth spring is fixedly connected between the surface of the trigger rod and the inner wall of the connecting block, and the other end of the trigger rod passes through the connecting block and contacts with the surface of the fixed plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. By setting the detector body, reflector, mounting plate, connecting plate and adjustment structure, the height of the detector body and the reflector can be adaptively adjusted during the installation of the guide rail. No subsequent adjustment by staff is required. The operation is simple, the interference factors of manual calibration are reduced, and the detection efficiency is improved. In addition, during the movement of the reflector, the height position of the detector body can be stabilized, which effectively improves the detection effect.

[0015] 2. By setting up a driving structure and rotating the bidirectional lead screw, the two L rods can be driven to approach each other under the action of the bidirectional lead screw, thereby driving the rotating column to be close to the surface of the installed linear guide rail, so that no resistance is caused during its movement. At the same time, the L rod can be driven to move in the direction of the offset of the fixed plate according to the offset of the linear guide rail, thereby driving the adjusting rod to insert into the interior of the outer shell and stretching the first spring. In this process, the adjusting structure can be cooperated to realize the left and right offset of the reflector position, thereby further improving the detection range. Compared with the traditional method that can only detect one side, this method can realize the detection of both sides of the linear guide rail.

[0016] 3. By setting up a driving structure, the roller can be driven to rotate by starting the motor, thereby achieving the effect of automatically driving the reflector to move, reducing the interference error caused by manual movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a partial cross-sectional schematic diagram of the present invention;

[0019] Figure 3 It is a schematic diagram of the distribution of the connecting plate and the L rod of the present invention;

[0020] Figure 4 It is a distribution diagram of the mounting block, the second spring and the limiting rod of the present invention;

[0021] Figure 5 It is a schematic diagram of the distribution of the housing, the adjustment rod, the roller and the motor of the present invention;

[0022] Figure 6 It is a structural schematic diagram of the regulating structure of the present invention.

[0023] In the figure: 1. workbench; 101. mounting slot; 102. mounting frame; 2. detector body; 201. reflector; 202. mounting plate; 203. connecting plate; 3. driving structure; 301. housing; 302. L rod; 303. rotating column; 304. bidirectional screw rod; 305. motor; 306. adjusting rod; 307. roller; 308. first spring; 309. fixing plate; 4. adjusting structure; 401. trigger block; 402. mounting block; 403. second spring; 404. limiting rod; 405. adjusting plate; 406. connecting block; 407. adjusting chamber; 408. trigger piston; 409. third spring; 410. trigger rod; 411. fourth spring; 412. connecting chamber; 413. conduit; 414. blocking block; 415. fifth spring; 416. adjusting piston; 417. mounting shell. DETAILED DESCRIPTION

[0024] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] like Figure 1-Figure 6 A linear guide straightness detection device shown in the figure comprises a workbench 1, a mounting groove 101 is provided on the top of the workbench 1, a mounting frame 102 is fixedly connected to one side of the workbench 1, a detector body 2 is arranged on the top of the mounting frame 102, a mounting plate 202 is arranged above the mounting groove 101, a reflector 201 is embedded and installed on one side of the mounting plate 202 close to the detector body 2, a connecting plate 203 is fixedly connected to the bottom of the mounting plate 202, a driving structure 3 located inside the mounting groove 101 is arranged at the bottom of the connecting plate 203, and an adjustment structure 4 is arranged at the bottom of the mounting frame 102;

[0027] Among them, the driving structure 3 includes two fixed plates 309 arranged on the inner wall of the installation groove 101, and the opposite sides of the two fixed plates 309 are provided with a shell 301 that is slidably connected to the inner wall of the workbench 1, and the other end of the shell 301 is rotatably connected to a roller 307 that is slidably connected to the inner wall of the workbench 1, and a motor 305 is arranged on the other side of one of the rollers 307, and the inner wall of the shell 301 is slidably connected to an adjusting rod 306, and the other end of the adjusting rod 306 passes through the shell 301 and is fixedly connected to the surface of the adjacent fixed plate 309, and a first spring 308 is fixedly connected between the surface of the adjusting rod 306 and the inner wall of the shell 301.

[0028] By starting the motor 305, the roller 307 connected to it can be driven to rotate, thereby sliding along the inner wall of the workbench 1. Specifically, the bottom of the motor 305 is provided with a mounting platform that is slidably connected to the inner wall of the workbench 1, so it will not affect the use of the motor 305. The detector body 2 can emit laser to the reflector 201. After reflection by the reflector 201, the detector body 2 can receive the reflected laser and judge the straightness of the linear guide according to the offset of the laser reflection.

[0029] like Figure 1-Figure 6 As shown, L-rods 302 are disposed on the surfaces of the two fixing plates 309 , one end of the L-rod 302 is located between the two fixing plates 309 , and the opposite sides of the two L-rods 302 are rotatably connected with evenly distributed rotating columns 303 .

[0030] The surfaces of the two fixing plates 309 are fixedly connected with mounting seats, a bidirectional screw rod 304 is rotatably connected between the two mounting seats, and the two L rods 302 are threadedly connected to the surfaces of the bidirectional screw rod 304 .

[0031] By rotating the bidirectional lead screw 304, the two L rods 302 can be driven closer to each other under the action of the bidirectional lead screw 304, thereby driving the rotating column 303 to be close to the surface of the installed linear guide rail, so that no resistance is caused during its movement. At the same time, the L rod 302 and the fixed plate 309 can be driven to move along the bending direction according to the bending changes of the side of the linear guide rail. In this process, the adjustment structure 4 can be cooperated to achieve the left and right offset of the position of the reflector 201, further improving the detection range. Compared with the traditional method of only being able to detect one side, this method can realize the detection of both sides of the linear guide rail.

[0032] like Figure 1-Figure 6 As shown, the adjustment structure 4 includes a trigger block 401 fixedly connected to the bottom of the connecting plate 203, the cross-sectional shape of the trigger block 401 is a right-angled trapezoid, and the inner wall of the trigger block 401 is slidably connected with two symmetrically distributed mounting blocks 402, one end of the mounting block 402 passes through the trigger block 401 and is fixedly connected to the surface of the adjacent fixed plate 309, the inner wall of the trigger block 401 is fixedly connected to a limit rod 404, the mounting block 402 is slidably connected to the surface of the limit rod 404, and a second spring 403 is fixedly connected between the mounting block 402 and the inner wall of the trigger block 401.

[0033] During the process of installing the guide rail, the guide rail is pushed into the interior of the installation groove and fixed by means of the preset installation holes on the surface of the guide rail and bolts. When inserted into the interior of the installation groove, the guide rail can push the inclined surface of the trigger block 401 so that it moves upward along the inner side of the two fixed plates 309 through the installation block 402 and the limit rod 404, so that the bottom surface of the trigger block 401 is close to the top surface of the guide rail, so as to facilitate the detection of the straightness of the top surface of the guide rail.

[0034] The adjustment structure 4 also includes a connecting block 406 fixedly connected to one side of the mounting frame 102, an adjusting chamber 407 is opened inside the connecting block 406, a trigger piston 408 is slidably connected to the inner wall of the adjusting chamber 407, the upper end of the trigger piston 408 passes through the connecting block 406 and contacts the bottom of the connecting plate 203, a third spring 409 is fixedly connected between the surface of the trigger piston 408 and the inner wall of the adjusting chamber 407, and the interior of the adjusting chamber 407 is filled with hydraulic oil.

[0035] The bottom of the mounting frame 102 is fixedly connected to two symmetrically distributed mounting shells 417, the inner wall of the mounting shell 417 is slidably connected to an adjusting piston 416, the upper end of the adjusting piston 416 passes through the mounting frame 102 and is fixedly connected to an adjusting plate 405, the detector body 2 is arranged on the top of the adjusting plate 405, a fifth spring 415 is fixedly connected between the surface of the adjusting piston 416 and the inner wall of the mounting shell 417, and the bottoms of the two mounting shells 417 are connected by a conduit 413.

[0036] A connecting cavity 412 is provided inside the connecting block 406, and the other end of the conduit 413 is connected to the interior of the connecting cavity 412. A flow guide tube is connected to the interior of the connecting block 406, one end of the flow guide tube is connected to the connecting cavity 412, and the other end of the flow guide tube is connected to the regulating cavity 407. The opening cross-section of the regulating cavity 407 is twice the inner cross-section of the mounting shell 417.

[0037] The inner wall of the connecting cavity 412 is slidably connected with a blocking block 414, the surface of the blocking block 414 is fixedly connected with a trigger rod 410, a fourth spring 411 is fixedly connected between the surface of the trigger rod 410 and the inner wall of the connecting block 406, and the other end of the trigger rod 410 passes through the connecting block 406 and contacts the surface of the fixed plate 309.

[0038] During the installation process, the guide rail pushes the trigger block 401 to move upward, thereby releasing the squeezing of the trigger piston 408. Under the action of the third spring 409, the trigger piston 408 is driven to move upward and squeeze the hydraulic oil stored in the adjusting chamber 407, so that the hydraulic oil is injected into the connecting chamber 412 through the guide tube, and injected into the interior of the mounting shell 417 from the bottom of the two mounting shells 417 under the action of the conduit 413, thereby achieving the effect of pushing the adjusting piston 416 upward. In this process, the fifth spring 415 is compressed. Since the opening cross-section of the adjusting chamber 407 is twice the inner cross-section of the mounting shell 417, the hydraulic oil squeezed by the upward movement of the trigger piston 408 is introduced into the two mounting shells 417 to push the adjusting piston 416 to the same upward height, thereby achieving the effect of driving the reflector 201 and the detector body 2 to move upward synchronously, without the need for subsequent calibration, and the operation is simple.

[0039] When the driving structure 3 drives the reflector 201 to move, the fixed plate 309 is separated from the trigger rod 410, so that the trigger rod 410 is reset under the action of the fourth spring 411 and the blocking block 414 blocks the connection between the guide tube and the conduit 413. At this time, the hydraulic oil cannot continue to flow, thereby ensuring the high stability of the detector body 2 and improving the subsequent detection effect.

[0040] Working principle: The guide rail is installed inside the installation groove 101. During this process, by rotating the bidirectional screw rod 304, the two L rods 302 can be driven to approach each other under the action of the bidirectional screw rod 304, thereby driving the rotating column 303 to be close to the surface of the installed linear guide rail, so that there will be no resistance during its movement. At the same time, according to the offset of the linear guide rail, the L rod 302 can be driven to move in the direction of the offset of the fixed plate 309, thereby driving the adjustment rod 306 to insert into the interior of the shell 301 and stretching the first spring 308. In this process, the adjustment structure 4 can be cooperated to realize the left and right offset of the position of the reflector 201, further improving the detection range. Compared with the traditional method that can only detect one side The method can realize the detection of both sides of the linear guide rail. During the installation process, the guide rail pushes the trigger block 401 to move upward, thereby releasing the squeezing of the trigger piston 408. Under the action of the third spring 409, the trigger piston 408 is driven to move upward, and the hydraulic oil stored in the adjusting chamber 407 is squeezed, so that the hydraulic oil is injected into the connecting chamber 412 through the guide tube, and is injected into the installation shell 417 from the bottom of the two installation shells 417 under the action of the conduit 413, thereby achieving the effect of pushing the adjusting piston 416 to move upward. In this process, the fifth spring 415 is compressed, thereby achieving the effect of synchronously driving the reflector 201 and the detector body 2 to move upward synchronously, without the need for subsequent calibration.

[0041] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A linear guide straightness detection device, comprising a workbench (1), characterized in that: The top of the workbench (1) is provided with a mounting groove (101), one side of the workbench (1) is fixedly connected with a mounting frame (102), a detector body (2) is arranged on the top of the mounting frame (102), a mounting plate (202) is arranged above the mounting groove (101), a reflector (201) is embedded and installed on a side of the mounting plate (202) close to the detector body (2), a connecting plate (203) is fixedly connected to the bottom of the mounting plate (202), a driving structure (3) located inside the mounting groove (101) is arranged at the bottom of the connecting plate (203), and an adjustment structure (4) is arranged at the bottom of the mounting frame (102); In which, the driving structure (3) includes two fixed plates (309) arranged on the inner wall of the installation groove (101), and the opposite sides of the two fixed plates (309) are provided with a shell (301) slidably connected to the inner wall of the workbench (1), and the other end of the shell (301) is rotatably connected to a roller (307) slidably connected to the inner wall of the workbench (1), and a motor (305) is arranged on the other side of one of the rollers (307), and the inner wall of the shell (301) is slidably connected to an adjustment rod (306), and the other end of the adjustment rod (306) passes through the shell (301) and is fixedly connected to the surface of the adjacent fixed plate (309), and a first spring (308) is fixedly connected between the surface of the adjustment rod (306) and the inner wall of the shell (301).

2. A linear guide rail straightness detection device according to claim 1, characterized in that: The surfaces of the two fixing plates (309) are both provided with L rods (302), one end of the L rod (302) is located between the two fixing plates (309), and the opposite sides of the two L rods (302) are both rotatably connected with evenly distributed rotating columns (303).

3. A linear guide rail straightness detection device according to claim 2, characterized in that: The surfaces of the two fixing plates (309) are fixedly connected with mounting seats, a bidirectional screw rod (304) is rotatably connected between the two mounting seats, and the two L rods (302) are threadedly connected to the surfaces of the bidirectional screw rod (304).

4. A linear guide rail straightness detection device according to claim 1, characterized in that: The regulating structure (4) comprises a trigger block (401) fixedly connected to the bottom of the connecting plate (203); the cross-sectional shape of the trigger block (401) is a right-angled trapezoid; the inner wall of the trigger block (401) is slidably connected with two symmetrically distributed mounting blocks (402); one end of the mounting block (402) passes through the trigger block (401) and is fixedly connected to the surface of the adjacent fixing plate (309); the inner wall of the trigger block (401) is fixedly connected with a limiting rod (404); the mounting block (402) is slidably connected to the surface of the limiting rod (404); and a second spring (403) is fixedly connected between the mounting block (402) and the inner wall of the trigger block (401).

5. A linear guide rail straightness detection device according to claim 4, characterized in that: The adjustment structure (4) further comprises a connection block (406) fixedly connected to one side of the mounting frame (102); an adjustment chamber (407) is provided inside the connection block (406); a trigger piston (408) is slidably connected to the inner wall of the adjustment chamber (407); the upper end of the trigger piston (408) passes through the connection block (406) and contacts the bottom of the connecting plate (203); a third spring (409) is fixedly connected between the surface of the trigger piston (408) and the inner wall of the adjustment chamber (407); and the interior of the adjustment chamber (407) is filled with hydraulic oil.

6. A linear guide rail straightness detection device according to claim 5, characterized in that: The bottom of the mounting frame (102) is fixedly connected to two symmetrically distributed mounting shells (417); the inner wall of the mounting shell (417) is slidably connected to an adjusting piston (416); the upper end of the adjusting piston (416) passes through the mounting frame (102) and is fixedly connected to an adjusting plate (405); the detector body (2) is arranged on the top of the adjusting plate (405); a fifth spring (415) is fixedly connected between the surface of the adjusting piston (416) and the inner wall of the mounting shell (417); and the bottoms of the two mounting shells (417) are connected by a conduit (413).

7. A linear guide rail straightness detection device according to claim 6, characterized in that: The connection block (406) is provided with a connection cavity (412) inside, the other end of the conduit (413) is connected to the inside of the connection cavity (412), the connection block (406) is connected to a flow guide tube inside, one end of the flow guide tube is connected to the connection cavity (412), and the other end of the flow guide tube is connected to the regulating cavity (407), and the opening cross-section of the regulating cavity (407) is twice the inner cross-section of the mounting shell (417).

8. A linear guide rail straightness detection device according to claim 7, characterized in that: The inner wall of the connecting cavity (412) is slidably connected to a blocking block (414), the surface of the blocking block (414) is fixedly connected to a trigger rod (410), a fourth spring (411) is fixedly connected between the surface of the trigger rod (410) and the inner wall of the connecting block (406), and the other end of the trigger rod (410) passes through the connecting block (406) and contacts the surface of the fixing plate (309).

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