Measuring device

Abstract

The utility model relates to a measuring device. Comprising a rack used for fixing a to-be-tested guide rail; the sliding rail is fixed to the rack, and the sliding block is connected with the sliding rail in a sliding mode; the distance measurement module comprises a first positioning piece and a laser detection unit, the first positioning piece and the laser detection unit are arranged on the two sides of the guide rail to be detected and fixedly connected, and the laser detection unit moves relative to the rack along with the first positioning piece; the first positioning piece is located between the to-be-detected guide rail and the sliding block, the first positioning piece is connected with the sliding block, the first positioning piece abuts against one side of the to-be-detected guide rail, and the laser emitting end and the laser receiving end of the laser detection unit both face the other side of the to-be-detected guide rail. According to the measuring device, the first positioning piece and the laser detection unit which are fixedly connected are arranged on the two sides of the to-be-measured guide rail, and the first positioning piece can abut against the to-be-measured guide rail while sliding along with the sliding block, so that the measuring device can obtain the parallelism of the two sides of the to-be-measured guide rail through the size detected by the laser detection unit; and the detection precision of the application is improved.

Description

Technical Field

[0001] The present application relates to the field of measurement, and in particular to a measuring device. Background Art

[0002] Before using the guide rail, it is usually necessary to test the accuracy of the guide rail to ensure that the forces acting on the guide rail and the slider are the same during use. In the prior art, the parallelism of the two opposite sides of the guide rail along the length direction perpendicular to the guide rail is usually achieved by using a two-point fitting straight line distance measurement solution.

[0003] However, as the length of the guide rail increases, the parallelism accuracy obtained by the two-point fitting straight line distance measurement solution is relatively low, and it is difficult to determine whether the parallelism of the guide rail to be measured meets the requirements. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of this application is to provide a measuring device that can improve the parallelism detection accuracy. Specifically, it includes the following technical solutions:

[0005] In a first aspect, an embodiment of the present application provides a measuring device, including:

[0006] A rack, used to fix the guide rail to be tested;

[0007] Slide rails and sliders, the slide rails are fixed to the frame, and the sliders are slidably connected to the slide rails;

[0008] The distance measuring module includes a first positioning member and a laser detection unit. The first positioning member and the laser detection unit are arranged on both sides of the guide rail to be measured and fixedly connected along the length direction perpendicular to the guide rail. The laser detection unit moves relative to the frame along with the first positioning member.

[0009] The first positioning member is located between the guide rail to be measured and the slider, the first positioning member is connected to the slider, the first positioning member abuts against one side of the guide rail to be measured, and the laser emitting end and the laser receiving end of the laser detection unit are both facing the other side of the guide rail to be measured.

[0010] The measuring device of the present application is provided with a fixedly connected first positioning member and a laser detection unit on both sides of the guide rail to be measured, so that the laser detection unit can move with the first positioning member, and then the first positioning member is connected to the slider, so that the first positioning member can maintain contact with the guide rail to be measured during the process of sliding along the length direction of the guide rail to be measured, so that the measuring device of the present application can obtain the parallelism of the two sides of the guide rail to be measured by the outer dimensions of one side of the guide rail to be measured detected by the laser detection unit, thereby improving the detection accuracy of the parallelism of the measuring device of the present application.

[0011] In one embodiment, the measuring device also includes a first limiting unit, which includes a first shell and a first top block. The first shell is fixed to the slider, and the first top block is at least partially accommodated in the first shell. The first top block extends out of the first shell to push the first positioning member to resist the guide rail to be measured.

[0012] In one embodiment, the first limiting unit also includes a first push rod, which is arranged in a length direction perpendicular to the slide rail, one end of the first push rod is fixedly connected to the first push block, and the other end passes through the first shell, and the first push rod includes a first limiting portion, which is located outside the first shell, and the first limiting portion is used to support the first shell to limit the extension length of the first top block.

[0013] In one embodiment, the first push rod can rotate around the first housing, and enable the first push block to push the first positioning member to abut against the guide rail to be measured.

[0014] In one embodiment, the distance measuring module further includes a connecting member, and the connecting member is fixed between the first positioning member and the laser detection unit.

[0015] In one embodiment, the slider includes a suspension, the suspension extends along the arrangement direction of the guide rail to be measured and the connecting member, the side of the connecting member away from the guide rail to be measured is connected to the suspension, and the connecting member is used to resist the guide rail to be measured.

[0016] In one embodiment, the measuring device also includes a second limiting unit, which includes a second shell and a second top block. The second shell is fixed to the slider, and the second top block is located on the side of the connecting member away from the guide rail to be measured, and is at least partially accommodated in the second shell. The second top block extends out of the second shell to push the connecting member to resist the guide rail to be measured.

[0017] In one embodiment, the distance measuring module further includes a second positioning member, the second positioning member is located on a side of the guide rail to be measured away from the first positioning member, the second positioning member is connected to the laser detection unit, and the second positioning member abuts against the guide rail to be measured.

[0018] In one embodiment, the measuring device further comprises a push block, which is fixed to the slide block and along the length direction of the slide rail. The push block is located on at least one side of the distance measuring module and abuts against the distance measuring module. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of a measuring device provided in one embodiment of the present application;

[0020] Figure 2 A schematic diagram of the side structure of a measuring device provided in one embodiment of the present application;

[0021] Figure 3 A partial exploded schematic diagram of a measuring device provided in one embodiment of the present application;

[0022] Figure 4 This is an exploded schematic diagram of a sliding module provided in one embodiment of the present application;

[0023] Figure 5 This is a schematic diagram of the decomposed structure of a sliding module provided in one embodiment of the present application;

[0024] Figure 6 This is a schematic diagram of the structure of a distance measurement module provided in one embodiment of the present application;

[0025] Figure 7 A schematic diagram of a partial structure of a measuring device provided in one embodiment of the present application;

[0026] Figure 8 This is a schematic diagram of the main structure of a measuring device provided in one embodiment of the present application;

[0027] Fig. 9 Another schematic diagram of the structure of a measuring device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0028] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are given in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thoroughly and comprehensively understood.

[0029] The following descriptions of the embodiments are with reference to the attached diagrams to illustrate specific embodiments that the present application can be used to implement. The serial numbers for the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present application, unless otherwise specified, include direct and indirect connections (couplings). The directional terms mentioned in the present application, such as "upper", "lower", "front", "back", "left", "right", "inside", "outside", "side", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0030] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be fixedly connected, detachably connected, or integrally connected; it can be mechanically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. It should be noted that the terms "first", "second", etc. in the specification and claims of this application and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including", "may include", "include", or "may include" used in this application indicate the existence of the corresponding functions, operations, elements, etc. disclosed, and do not limit one or more other functions, operations, elements, etc. In addition, the terms "including" or "include" indicate the existence of the corresponding features, numbers, steps, operations, elements, components, or combinations thereof disclosed in the specification, and do not exclude the existence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof, and are intended to cover non-exclusive inclusions.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0032] See also Figure 1 The structural diagram of the measuring device 100 provided in one embodiment of the present application is shown in FIG. Figure 2 FIG. 1 is a schematic diagram of a side view of a measuring device 100 provided in one embodiment of the present application. For ease of description, Figure 2 Relative to Figure 1 Part of the structure is omitted. Figure 1 A rectangular coordinate system is established in the following figures.

[0033] like Figure 1 and Figure 2 As shown, the measuring device 100 of the present application includes a frame 10, a sliding module 20 and a distance measuring module 30. The guide rail 200 to be measured is fixed on the frame 10. The sliding module 20 includes a slide rail 20a and a slider 20b, and the slide rail 20a is fixed on the frame 10. The guide rail 200 to be measured is a linear guide rail, and the slide rail 20a is also a linear guide rail. Among them, the length direction of the slide rail 20a coincides with the x-axis direction, and the length direction of the slide rail 20a is also roughly parallel to the length direction of the guide rail 200 to be measured. The slider 20b is slidably connected to the slide rail 20a.

[0034] The slider 20b is fixed with a suspension 21, which extends along the z-axis in a direction away from the frame 10. In the y-axis direction, the suspension 21 is arranged opposite to one side of the guide rail 200 to be tested. Since the suspension 21 and the slider 20b are fixed to each other, when the slider 20b slides relative to the frame 10, the suspension 21 also slides relative to the frame 10 with the slider 20b.

[0035] like Figure 1 and Figure 2 As shown, the ranging module 30 includes a first positioning member 31 and a laser detection unit 32. Along the y-axis direction, the first positioning member 31 and the laser detection unit 32 are arranged on opposite sides of the guide rail 200 to be measured, and the first positioning member 31 and the laser detection unit 32 are fixedly connected so that the laser detection unit 32 can move synchronously with the first positioning member 31 relative to the frame 10.

[0036] Along the y-axis direction, the first positioning member 31 is located between the guide rail 200 to be tested and the suspension 21 fixed on the slider 20b. Along the y-axis direction, one end of the first positioning member 31 is connected to the suspension 21, and the other end of the first positioning member 31 abuts against one side of the guide rail 200 to be tested.

[0037] Since the first positioning member 31 is connected to the suspension 21, and the suspension 21 is fixed on the slider 20b, when the slider 20b slides relative to the frame 10, the first positioning member 31 also slides synchronously with the sliding of the slider 20b through the suspension 21. At the same time, since the end of the first positioning member 31 away from the suspension 21 abuts against one side of the guide rail 200 to be measured, when the first positioning member 31 slides along the x-axis direction with the slider 20b, the first positioning member 31 always maintains an abutting relationship with the guide rail 200 to be measured in the y-axis direction.

[0038] Furthermore, since the plane where the guide rail 200 to be tested and the first positioning member 31 abut against each other may have a convex structure or a concave structure in the y-axis direction, the first positioning member 31 always maintains an abutting relationship with the guide rail 200 to be tested. It can be understood that when the first positioning member 31 slides along the x-axis direction with the slider 20b, the first positioning member 31 will also be displaced along the y-axis direction as the surface shape of the guide rail 200 to be tested changes.

[0039] Because the first positioning member 31 is fixedly connected to the laser detection unit 32. It can be understood that when the first positioning member 31 is displaced in the y-axis direction during the sliding process along the x-axis direction, the laser detection unit 32 is displaced synchronously with the first positioning member 31 along the y-axis direction while sliding along the x-axis direction with the first positioning member 31.

[0040] like Figure 2As shown, the laser detection unit 32 has a laser emitting end (not shown in the figure) and a laser receiving end (not shown in the figure), and the laser emitting end and the laser receiving end of the laser detection unit 32 are both facing the other side of the guide rail 200 to be measured.

[0041] It can be understood that after the laser emitted from the laser emitting end of the laser detection unit 32 is emitted to the guide rail 200 to be measured, at least part of the laser emitted to the guide rail 200 to be measured will be reflected by the guide rail 200 to be measured, and the reflected laser will be emitted into the laser receiving end and absorbed by the laser receiving end. The laser detection unit 32 obtains the distance between itself and the guide rail 200 to be measured by detecting the time required for the laser emitting end to emit the laser and the laser receiving end to receive the laser.

[0042] Before the slider 20b slides, the laser detection unit 32 obtains the initial spacing between the slider 20b and the guide rail 200 to be measured. Since the first positioning member 31 slides along the x-axis during the sliding process of the slider 20b, the first positioning member 31 will also be displaced in the y-axis direction due to the change in the surface shape of the guide rail 200 to be measured. And the laser detection unit 32 can move synchronously with the movement of the first positioning member 31. It can be understood that when the first positioning member 31 is in contact with the raised structure of the guide rail 200 to be measured, the first positioning member 31 will be displaced in the positive semi-axis direction of the y-axis, and the first positioning member 31 will also drive the laser detection unit 32 to be synchronously displaced in the positive semi-axis direction of the y-axis. At this time, the spacing detected by the laser detection unit 32 is different from the initial spacing, and the spacing at this time should be the initial spacing minus the protruding height of the raised structure.

[0043] On the other hand, when the first positioning member 31 abuts against the groove structure of the guide rail 200 to be measured, the first positioning member 31 will be displaced along the negative semi-axis direction of the y-axis, and the first positioning member 31 will also drive the laser detection unit 32 to be synchronously displaced along the negative semi-axis direction of the y-axis. At this time, the spacing detected by the laser detection unit 32 is different from the initial spacing, and the spacing at this time is the initial spacing plus the depression depth of the groove structure.

[0044] At the same time, since the surface of the guide rail 200 to be tested facing the laser detection unit 32 may also generate a convex structure or a concave structure in the y-axis direction, when the laser detection unit 32 slides with the slider 20b, when the laser emitted by the laser emitting end of the laser detection unit 32 hits the concave structure or the convex structure, the spacing detected by the laser detection unit 32 is also different from the initial spacing.

[0045] Therefore, in the process of detecting the parallelism of the guide rail 200 to be measured, the spacing detected by the laser detection unit 32 during the sliding process will change due to the change in the surface shape of the guide rail 200 to be measured supported by the first positioning member 31, and the change in the surface shape of the guide rail 200 to be measured where the laser generated by the laser detection unit 32 is irradiated.

[0046] In the process of detecting the parallelism of the guide rail 200 to be measured, while the laser detection unit 32 slides with the first positioning member 31, the laser detection unit 32 also obtains the distance between the laser detection unit 32 and multiple positions of the guide rail 200 to be measured in multiple time periods. The measuring device 100 of the present application uses the difference in the distance between different positions to reflect the change in the external dimensions of the two opposite sides of the guide rail 200 to be measured, so as to judge the parallelism of the two opposite sides of the guide rail 200 to be measured, and avoids obtaining too few positions and affecting the detection accuracy. This improves the detection accuracy of the parallelism of the measuring device 100 of the present application.

[0047] Specifically, for the two intervals between two adjacent detection points of the guide rail 200 to be measured obtained by the laser detection unit 32, when the difference between the two intervals is 0, it indicates that the intervals between the opposite sides of the guide rail to be measured corresponding to the two intervals are the same, and correspondingly, it can be indicated that the straight lines fitted by the opposite sides of the guide rail 200 to be measured between the two adjacent detection points are parallel.

[0048] When the difference between the two spacings is within the preset range, it indicates that there is a difference in the spacing between the two opposite sides of the guide rail to be tested corresponding to the two spacings, but the difference is within the preset range. Correspondingly, it can be indicated that the straight line fitted by the opposite sides of the guide rail 200 to be tested between two adjacent detection points meets the parallelism requirement.

[0049] When the difference between the two spacings is outside the preset range, it indicates that there is a difference in the spacing between the two opposite sides of the guide rail to be tested corresponding to the two spacings, and the difference is outside the preset range. Correspondingly, it can be indicated that the straight line fitted by the opposite sides of the guide rail 200 to be tested between two adjacent detection points does not meet the parallelism requirement.

[0050] That is, the measuring device 100 of the present application can determine whether the parallelism of the guide rail 200 to be measured meets the requirements through the difference between the data obtained by the laser detection unit 32, thereby realizing the parallelism detection of the guide rail 200 to be measured.

[0051] Therefore, compared with the solution of taking two points to fit a straight line to measure the distance adopted in the prior art, the measuring device 100 of the present application sets a fixedly connected first positioning member 31 and a laser detection unit 32 on both sides of the guide rail 200 to be measured, so that the laser detection unit 32 can move with the first positioning member 31, and then connects the first positioning member 31 to the slider 20b, so that the first positioning member 31 can maintain contact with the guide rail 200 to be measured during the sliding process along the x-axis direction, so that the measuring device 100 of the present application can obtain the parallelism of the two sides of the guide rail 200 to be measured by the outer dimensions of one side of the guide rail to be measured detected by the laser detection unit 32, thereby improving the detection accuracy of the parallelism of the measuring device 100 of the present application.

[0052] See also Figure 3 The partially exploded schematic diagram of the measuring device 100 provided in one embodiment of the present application is shown in FIG. Figure 1 and Figure 2 .

[0053] like Figure 1-Figure 3 As shown, the measuring device 100 of the present application further includes a first limiting unit 22, and the first limiting unit 22 includes a first shell 221 and a first top block 222. The first shell 221 is fixed to the slider 20b, and at this time, the first shell 221 is the suspension 21. The first top block 222 is at least partially accommodated in the first shell 221. Along the y-axis direction, one end of the first top block 222 is connected to the first shell 221, and the other end of the first top block 222 is abutted against the first positioning member 31.

[0054] Specifically, the first top block 222 can extend out of the first shell 221 along the y-axis direction to push the first positioning member 31 to move along the y-axis direction, thereby achieving the abutment between the first positioning member 31 and the guide rail 200 to be measured, thereby ensuring the improvement of the detection accuracy of the measuring device 100 of the present application.

[0055] See also Figure 4 The schematic diagram of the sliding module 20 provided in one embodiment of the present application is shown in FIG. Figure 5 The schematic diagram of the decomposition structure of the sliding module 20 provided in one embodiment of the present application is shown in FIG. Figure 2 and Figure 3 .

[0056] like Figure 2-Figure 5As shown, the first limiting unit 22 further includes a first push rod 223, and the first push rod 223 is arranged along the y-axis direction. The first push rod 223 includes a first connecting portion 2231 and a first limiting portion 2232, and a first through hole 2211 is provided on the first shell 221. One end of the first connecting portion 2231 is fixedly connected to the first top block 222, and the other end passes through the first through hole 2211 to pass through the first shell 221 and is fixedly connected to the first limiting portion 2232 outside the first shell 221.

[0057] In one embodiment, if Figure 2-Figure 5 As shown, the first limiting portion 2232 can rotate around the first housing 221 , and the first connecting portion 2231 controls the first top block 222 to push the first positioning member 31 to abut against the guide rail 200 to be measured.

[0058] See also Figure 6 The structure diagram of the distance measurement module 30 provided in one embodiment of the present application is shown.

[0059] like Figure 6 As shown, the distance measurement module 30 further includes a connecting member 33 , one end of the connecting member 33 is fixed to the first positioning member 31 , and the other end of the connecting member 33 is fixedly connected to the laser detection unit 32 along the z-axis direction.

[0060] At the same time, the cooperation among the connecting member 33 , the first positioning member 31 and the frame 10 limits the movement of the guide rail 200 to be measured along the y-axis direction and the z-axis direction, thereby achieving the positioning of the guide rail 200 to be measured.

[0061] In one embodiment, please refer to Figure 1-Figure 3 The end of the suspension 21 away from the slider 20b also extends along the y-axis direction, and along the z-axis direction, the projection of the suspension 21 on the connecting member 33 at least partially covers the connecting member 33. In the z-axis direction, the connecting member 33 is connected to the suspension 21 at a side away from the guide rail 200 to be tested.

[0062] In one embodiment, if Figure 1-Figure 5 As shown, the sliding module 20 further includes a second limiting unit 23, which includes a second housing 231 and a second top block 232. The second housing 231 is fixedly connected to the end of the first housing 221 away from the slider 20b as a whole, and the first housing 221 and the second housing 231 cooperate with each other to form the suspension 21. The second top block 232 is at least partially accommodated in the second housing 231. Along the z-axis direction, one end of the second top block 232 is connected to the second housing 231, and the other end of the second top block 232 is abutted against the connecting member 33.

[0063] Specifically, the second top block 232 can extend out of the second shell 231 along the z-axis direction to push the connecting member 33 to move along the z-axis direction, thereby achieving the abutment between the connecting member 33 and the guide rail 200 to be measured, thereby ensuring the improvement of the detection accuracy of the measuring device 100 of the present application.

[0064] It can be understood that in this embodiment, the first housing 221 and the second housing 231 are configured as an integral structure to form the suspension 21. In other embodiments, one end of the first housing 221 is fixedly connected to the slider 20b, and the other end of the first housing 221 extends along the z-axis direction to form the suspension 21. One end of the second housing 231 is fixedly connected to the slider 20b, and the other end of the second housing 231 extends along the y-axis direction to form a second suspension (not shown in the figure), and the suspension 21 and the second suspension are spaced apart from each other.

[0065] In one embodiment, if Figure 1-Figure 5 As shown, the second limiting unit 23 also includes a second push rod 233, and the second push rod 233 is arranged along the z-axis direction. The second push rod 233 includes a second connecting portion 2331 and a second limiting portion 2332, and a second through hole 2311 is provided on the second shell 231. One end of the second connecting portion 2331 is fixedly connected to the second top block 232, and the other end of the second connecting portion 2331 passes through the second through hole 2311 and passes through the second shell 231, and is fixedly connected to the second limiting portion 2332 outside the second shell 231.

[0066] In one embodiment, if Figure 1-Figure 5 As shown, the second limiting portion 2332 can rotate around the second housing 231 , and the second connecting portion 2331 controls the second top block 232 to push the connecting member 33 to abut against the guide rail 200 to be tested.

[0067] In one embodiment, please refer to Figure 2 and Figure 6 The distance measuring module 30 further includes a second positioning member 34 . Along the y-axis direction, the second positioning member 34 is located on a side of the guide rail 200 to be measured away from the first positioning member 31 , and the second positioning member 34 is elastically connected to the laser detection unit 32 .

[0068] It can be understood that the elastic connection between the second positioning member 34 and the laser detection unit 32 enables the second positioning member 34 to slide toward the guide rail 200 to be measured along the y-axis direction under the action of the elastic force and abut against the guide rail 200 to be measured. The second positioning member 34 is used to cooperate with the first positioning member 31 to achieve abutment on the opposite sides of the guide rail 200 to be measured, further limit the displacement of the guide rail 200 to be measured along the y-axis direction, and further improve the detection accuracy of the measuring device 100 of the present application.

[0069] In the embodiment of the present application, the connection member 33, the first positioning member 31, the second positioning member 34 and the frame 10 cooperate with each other to limit the movement of the guide rail 200 to be measured along the y-axis direction and the z-axis direction, thereby achieving the positioning of the guide rail 200 to be measured.

[0070] At the same time, a connecting hole (not shown in the figure) is also provided in the second positioning member 34, and the laser emitted by the laser detection unit 32 can pass through the connecting hole to realize the distance measurement function of the guide rail 200 to be measured. Thus, the parallelism detection function of the guide rail 200 to be measured by the measuring device 100 of the present application is ensured.

[0071] In one embodiment, if Figure 2 and Figure 6 As shown, the distance measurement module 30 further includes a mounting member 35, the mounting member 35 includes a fixing portion 351 and a mounting portion 352, the fixing portion 351 is arranged along the y-axis direction, one end of the mounting portion 352 is fixed to the end of the fixing portion 351 toward the connecting member 33, and the other end extends toward the frame 10 along the z-axis direction, and the fixing portion 351 is fixedly connected to the laser detection unit 32. That is, the mounting member 35 fixedly connects the first positioning member 31, the laser detection unit 32 and the connecting member 33.

[0072] The second positioning member 34 is embedded in the mounting portion 352 , and along the y-axis direction, a portion of the second positioning member 34 extends out of the mounting portion 352 close to the surface of the guide rail 200 to be measured, so as to achieve abutment with the guide rail 200 to be measured.

[0073] In one embodiment, the distance measuring module 30 further includes an elastic member (not shown in the figure), one end of the elastic member abuts against the mounting portion 352 , and the other end abuts against the second positioning member 34 to provide a force for the second positioning member 34 to slide toward the guide rail 200 to be measured.

[0074] In one embodiment, please refer to Figure 1-Figure 5 The sliding module 20 further includes a push block 24, which is fixed on the suspension 21. The push block 24 is located at one side of the distance measuring module 30 along the x-axis direction, and abuts against the first positioning member 31 and the connecting member 33 of the distance measuring module 30. When the sliding module 20 slides along the x-axis direction, the push block 24 also slides synchronously with the slider 20b, and pushes the first positioning member 31 and the connecting member 33 to slide synchronously.

[0075] It can be understood that the setting of the push block 24 ensures that the force driving the sliding block 20b to slide can be transmitted to the distance measuring module 30, thereby ensuring the synchronous sliding of the sliding module 20 and the distance measuring module 30. The user can achieve the distance measurement of the guide rail 200 to be measured at different points by controlling the sliding of the sliding module 20. The relative movement between the sliding module 20 and the distance measuring module 30 is avoided to affect the detection of the parallelism of the guide rail 200 to be measured. The detection accuracy and control accuracy of the measuring device 100 of the present application are further improved.

[0076] See also Figure 7 The partial structural diagram of the measuring device 100 provided in one embodiment of the present application is shown in FIG. Figure 8 The schematic diagram of the main structure of the measuring device 100 provided in one embodiment of the present application is shown in FIG. Figure 1 .

[0077] like Figure 1 , Figure 7 and Figure 8 As shown, the measuring device 100 of the present application further includes a driving module 40, which includes a driving motor 40a, a screw rod 41 and a driving member 42. The driving motor 40a is fixed to the frame 10, and the screw rod 41 extends along the x-axis direction. Along the y-axis direction, one end of the driving member 42 is transmission-connected to the screw rod 41, and the other end of the driving member 42 is fixedly connected to the slider 20b.

[0078] The driving motor 40a drives the screw 41 to rotate relative to the frame 10, so that the driving member 42 slides along the x-axis direction relative to the frame 10, thereby driving the slider 20b to slide along the x-axis direction, and realizing the sliding of the distance measuring module 30 along the x-axis direction. In this way, the parallelism detection function of the measuring device 100 of the present application on the guide rail 200 to be measured is realized.

[0079] It is understandable that in other embodiments, the driving mode of the driving module 40 may be other modes, and the present application does not impose any particular limitation on this.

[0080] In one embodiment, if Figure 1 , Figure 7 and Figure 8 As shown, the rack 10 includes a rack body 11 and a fixed module 12, and the fixed module 12 is fixed to the surface of the rack body 11. The fixed module 12 includes a positioning block 121, a fixing plate 122 and a stopper 123. There are two positioning blocks 121, which are arranged at intervals along the x-axis direction, and the positioning blocks 121 are fixed to the surface of the rack body 11.

[0081] The fixing plate 122 is fixed to the surface of the two positioning blocks 121 away from the rack body 10. The fixing plate 122 is provided with a receiving groove 1221, which is arranged along the x-axis direction and is used to receive the guide rail 200 to be tested.

[0082] Along the x-axis direction, the limiting member 123 is slidably connected to one end of the receiving groove 1221. The fixed module 12 further includes a limiting spring 124, and along the x-axis direction, the limiting spring 124 is abutted between the side wall of the receiving groove 1221 and the limiting member 123. It can be understood that the limiting spring 124 is used to push the limiting member 123 to abut against the end surface of the guide rail 200 to be measured along the x-axis direction, so as to cooperate with the receiving groove 1221 to achieve the limit of the guide rail 200 to be measured in the x-axis direction.

[0083] In one embodiment, two slide rails 20a are provided, and the length directions of the two slide rails 20a are the same. Along the y-axis direction, the two slide rails 20a are arranged on opposite sides of the fixed module 12, and the slider 20b passes through the gap between the fixed plate 122 and the rack body 11 and is slidably connected to the two slide rails 20a.

[0084] It can be understood that the provision of the two slide rails 20a further improves the running stability of the slider 20b, thereby further improving the sliding stability of the distance measurement module 30, and further improving the detection accuracy of the measuring device 100 of the present application.

[0085] See also Fig. 9 Another structural schematic diagram of a measuring device 100 provided in an embodiment of the present application is shown.

[0086] like Fig. 9 As shown, the guide rail 200 to be tested is a curved guide rail, and the length direction of the guide rail 200 to be tested is the sliding direction of the slider arranged on the guide rail 200 to be tested. Correspondingly, the slide rail 20a should also be arranged as a curved guide rail, and the length direction of the slide rail 20a is substantially parallel to the length direction of the guide rail 200 to be tested.

[0087] That is, when the measuring device 100 of the present application detects the guide rail 200 to be measured as a curved guide rail, the slide rail 20a needs to be set as a curved guide rail as well, and the sliding directions of the slider slidably connected to the guide rail 200 to be measured and the slide rail 20a are made to be roughly the same, so as to facilitate the measuring device 100 of the present application to detect the parallelism of the guide rail 200 to be measured set as a curved guide over the entire length range.

[0088] It should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0089] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0090] It should be understood that the application of the present application is not limited to the above examples. For ordinary technicians in the field, they can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to this application. Ordinary technicians in the field can understand that all or part of the processes of the above embodiments are implemented, and equivalent changes made according to the claims of this utility model still fall within the scope covered by this utility model.

Claims

1. A measuring device, characterized in that: include: A rack, used to fix the guide rail to be tested; A slide rail and a slider, wherein the slide rail is fixed to the frame, and the slider is slidably connected to the slide rail; The distance measuring module comprises a first positioning member and a laser detection unit, wherein the first positioning member and the laser detection unit are arranged on both sides of the guide rail to be measured and fixedly connected along a length direction perpendicular to the guide rail; The first positioning member is located between the guide rail to be measured and the slider, the first positioning member is connected to the slider, the first positioning member abuts against one side of the guide rail to be measured, and the laser emitting end and the laser receiving end of the laser detection unit are both facing the other side of the guide rail to be measured.

2. The measuring device according to claim 1, characterized in that The measuring device also includes a first limiting unit, which includes a first shell and a first top block. The first shell is fixed to the slider, the first top block is at least partially accommodated in the first shell, and the first top block extends out of the first shell to push the first positioning member to abut against the guide rail to be measured.

3. The measuring device according to claim 2, characterized in that The first limiting unit also includes a first push rod, which is arranged in a length direction perpendicular to the slide rail, one end of the first push rod is fixedly connected to the first push block, and the other end passes through the first shell, and the first push rod includes a first limiting portion, which is located outside the first shell, and the first limiting portion is used to abut against the first shell to limit the extension length of the first push block.

4. The measuring device according to claim 3, characterized in that The first push rod can rotate around the first housing, and enable the first push block to push the first positioning member to abut against the guide rail to be measured.

5. The measuring device according to any one of claims 1 to 4, characterized in that: The distance measuring module also includes a connecting member, and the connecting member is fixed between the first positioning member and the laser detection unit.

6. The measuring device according to claim 5, characterized in that The slider comprises a suspension, the suspension extends along the arrangement direction of the guide rail to be measured and the connecting member, a side of the connecting member away from the guide rail to be measured is connected to the suspension, and the connecting member is used to abut against the guide rail to be measured.

7. The measuring device according to claim 6, characterized in that The measuring device also includes a second limiting unit, which includes a second shell and a second top block. The second shell is fixed to the slider, the second top block is located on a side of the connecting member away from the guide rail to be measured, and is at least partially accommodated in the second shell. The second top block extends out of the second shell to push the connecting member to resist the guide rail to be measured.

8. The measuring device according to any one of claims 1 to 4, characterized in that: The distance measurement module also includes a second positioning member, which is located on a side of the guide rail to be measured away from the first positioning member, the second positioning member is connected to the laser detection unit, and the second positioning member abuts against the guide rail to be measured.

9. The measuring device according to any one of claims 1 to 4, characterized in that: The measuring device further comprises a push block, which is fixed to the sliding block and along the length direction of the sliding rail. The push block is located at least on one side of the distance measuring module and abuts against the distance measuring module.

Images