An instrument for measuring straightness

Abstract

An instrument for measuring straightness provided by an embodiment of the present invention, the instrument includes a base, a slider, a pointer, a connecting plate and a mirror frame; a scale is provided on one side plate surface of the base; a to-be-measured object is installed on the base plate surface at a first preset distance from the scale; the slider is used to be cooperatively installed on the to-be-measured object, and the slider can slide relative to the to-be-measured object; a connecting plate is installed on the slider; a mirror frame is installed on the connecting plate, and a pointer is also installed on the plate surface of the connecting plate on the side opposite to the scale; the mirror frame is used to install a reflector, and the reflector is used to receive the laser generated by a laser tester placed on one side of the reflector and reflect the laser, so that the laser tester receives the laser reflected by the reflector and determines the straightness of the to-be-measured object according to the emitted laser. Applying the instrument provided by the embodiment of the present invention not only adds a scale, but also limits the position of the mirror frame, thereby being able to reduce the complexity of measurement.

Description

Technical Field

[0001] The present invention relates to the technical field of measuring devices, and particularly to an instrument for measuring straightness. Background Art

[0002] With the continuous innovation and development of science and technology, the requirements for the accuracy of geometric parameters in the production processes of various fields are becoming increasingly strict. For example, as one of the geometric errors, the straightness of a guide rail directly affects the accuracy, performance, quality of the produced parts, and the accuracy of the movement along the guide rail. It can be seen that during the production process of the guide rail, it is necessary to detect the straightness of the guide rail to reduce the influence of the straightness of the guide rail on the produced parts.

[0003] Currently, a device for measuring straightness provided by the prior art includes a mirror frame for installing a mirror and a laser tester. When measuring the straightness of a guide rail, it is necessary to manually divide the guide rail into multiple segments and mark them, and then place the mirror frame at the marked positions on the guide rail. During the measurement process, since the placement positions of the mirror frame are all estimated manually and the mirror frame has a large flexibility and often shakes during the placement process, the laser emitted by the laser tester cannot be correctly reflected onto the mirror, and it is necessary to try multiple times and re-correct the placement position of the mirror frame. It can be seen that using the existing device for measuring straightness to measure straightness has a high complexity. Summary of the Invention

[0004] The purpose of the embodiments of the present invention is to provide an instrument for measuring straightness to reduce the complexity of measurement.

[0005] The specific technical solution is as follows:

[0006] An instrument for measuring straightness, the instrument includes: a base, a slider, a pointer, a connecting plate, and a mirror frame;

[0007] Wherein, the base is a rectangular plate-like structure, and a scale is provided on one side plate surface of the base, and the object to be measured is installed on the base plate surface at a first preset distance from the scale;

[0008] The slider is used to be installed on the object to be measured in a matching manner, and the slider can slide relative to the object to be measured;

[0009] The connecting plate is installed on the slider;

[0010] The mirror frame is installed on the connecting plate, and the pointer is also installed on the plate surface of the connecting plate on the side opposite to the scale;

[0011] The spectacle frame is used for mounting a reflector, and the reflector is used for receiving the laser generated by a laser tester placed on one side of the reflector and reflecting the laser, so that the laser tester receives the laser reflected by the reflector and determines the straightness of the object to be measured according to the emitted laser.

[0012] Further, the instrument further comprises: a conversion device;

[0013] The conversion device comprises: a first connection block, a second connection block and a transfer column; a first magnet is provided at a first preset position on one side plate surface of the first connection block, and the other side plate surface of the first connection block is mounted on the connection plate;

[0014] A second magnet is provided at a second preset position on one side plate surface of the second connection block, a transfer column is mounted on the other side plate surface of the second connection block, and the first connection block and the second connection block are in a connected state by attraction of the first magnet and the second magnet;

[0015] The spectacle frame is mounted on the transfer column.

[0016] Further, the conversion device further comprises: a limiting member and a connection column;

[0017] The limiting member is mounted on the first connection block or the second connection block. If the limiting member is mounted on the first connection block, the second connection block is provided with a limiting groove that cooperates with the limiting member;

[0018] The connection column is mounted on the side wall of the first connection block or the second connection block so that when the connection column is rotated, the first magnet and the second magnet are displaced so that the first connection block and the second connection block are separated.

[0019] Further, when the limiting member is mounted on the first connection block, the conversion device further comprises a ball component, and the limiting member is a round ball;

[0020] The ball component comprises two cylindrical balls, and a limiting groove that cooperates with the round ball is provided between the two cylindrical balls;

[0021] The two cylindrical balls of the ball component are fixedly mounted on the first connection block at a second preset distance;

[0022] The second connection block is provided with a round ball that cooperates with the limiting groove.

[0023] Further, the instrument further comprises: a reflector.

[0024] Further, the instrument further comprises: a laser tester with adjustable height.

[0025] Further, the laser tester is an optoelectronic autocollimator.

[0026] Further, the base is made of marble.

[0027] Further, the mirror holder includes a bracket and a lens frame;

[0028] Wherein, one end of the bracket is mounted on the connecting plate, and the other end of the bracket is mounted with the lens frame.

[0029] Further, handles are respectively provided at opposite end portions of the mounting plate surface of the base.

[0030] An instrument for measuring straightness provided by an embodiment of the present invention includes a base, a slider, a pointer, a connecting plate, and a mirror holder; a scale is provided on one side plate surface of the base, and an object to be measured is mounted on the base plate surface at a first preset distance from the scale; the slider is used to be cooperatively mounted on the object to be measured, and the slider can slide relative to the object to be measured; a connecting plate is mounted on the slider; a mirror holder is mounted on the connecting plate, and a pointer is further mounted on the plate surface of the connecting plate on the side opposite to the scale; the mirror holder is used to mount a reflecting mirror, and the reflecting mirror is used to receive the laser generated by a laser tester placed on one side of the reflecting mirror and reflect the laser, so that the laser tester receives the laser reflected by the reflecting mirror and determines the straightness of the object to be measured according to the emitted laser. Compared with the prior art, the instrument provided by the embodiment of the present invention not only adds a scale, but also limits the position of the mirror holder, thereby being able to reduce the complexity of measurement. Of course, it is not necessary for any product or method implementing the present invention to simultaneously achieve all the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0032] Figure 1 It is an exploded structural schematic diagram of an instrument for measuring straightness provided by an embodiment of the present invention;

[0033] Figure 2 It is a partial exploded structural schematic diagram of a conversion device provided by an embodiment of the present invention;

[0034] Figure 3 It is a partial structural schematic diagram of a conversion device provided by an embodiment of the present invention;

[0035] Figure 4 It is a partial exploded structural schematic diagram of an instrument for measuring straightness provided by an embodiment of the present invention.

[0036] 1 - Base; 2 - Slide block; 3 - Pointer; 4 - Connecting plate; 5 - Mirror holder; 6 - Object to be measured; 7 - Conversion device; 11 - Scale; 12 - Handle; 71 - First connecting block; 72 - Second connecting block; 73 - Adapter post; 74 - Limiting member; 75 - Connecting post; 76 - Ball assembly; 711 - First magnet; 721 - Second magnet; 741 - Round ball; 761 - Limiting groove Specific embodiments

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] To solve the problems of the prior art, an embodiment of the present invention provides a telescopic member for assembling a sports floor.

[0039] See Figure 1 , Figure 1 which is an exploded structural view of the instrument for measuring straightness provided in this embodiment. The instrument includes: a base 1, a slide block 2, a pointer 3, a connecting plate 4, and a mirror holder 5;

[0040] Among them, the base 1 is a rectangular plate-like structure, and a scale 11 is provided on one side plate surface of the base 1. An object to be measured 6 is installed on the plate surface of the base 1 at a first preset distance from the scale 11;

[0041] The slide block 2 is used to be cooperatively installed on the object to be measured 6, and the slide block 2 can slide relative to the object to be measured 6;

[0042] The connecting plate 4 is installed on the slide block 2;

[0043] The mirror holder 5 is installed on the connecting plate 4, and the pointer 3 is also installed on the plate surface of the connecting plate 4 on the side opposite to the scale 11;

[0044] The mirror holder 5 is used to install a reflector, and the reflector is used to receive the laser generated by a laser tester placed on one side of the reflector and reflect the laser, so that the laser tester receives the laser reflected by the reflector and determines the straightness of the object to be measured 6 according to the emitted laser.

[0045] Among them, installation clamping members can be used to fix both ends of the above-mentioned object to be measured 6 to prevent shaking during the measurement of the straightness of the object to be measured. That is, during the measurement, the clamping members can fixedly install the above-mentioned object to be measured 6 on the base 1.

[0046] The object to be measured 6 mentioned above is an object whose straightness needs to be measured, such as a guide rail, a straightedge, a steel pipe, a scale 11, etc.

[0047] When the object to be measured 6 is a guide rail, the above-mentioned slider 2 can move linearly along the guide rail. In other words, the guide rail drives the slider 2 to move along the length direction of the guide rail, so that the slider 2 can stay at any section of the guide rail (abbreviated as the side of the guide rail section) at any time to measure the straightness from this guide rail section to the end of the guide rail on the side of the laser tester.

[0048] The object to be measured 6 is installed on the board surface of the base 1 at a first preset distance from the scale 11. The determination of the first preset distance can be made according to the distance that can facilitate the viewer to read the scale of the pointer 3 indicating the scale 11.

[0049] A locking member can be provided on the slider 2. When the slider 2 slides along the object to be detected to a preset position, the locking member can be locked so that the slider 2 remains stationary. When sliding is required, the locking member is opened.

[0050] The connecting plate 4 is a plate structure for connecting the mirror frame 5 and the slider 2; the setting of the connecting plate 4 also facilitates the disassembly and installation of the mirror frame 5.

[0051] The connecting plate 4 and the mirror frame 5 can be installed by using the cooperation of threads. For example: the mirror frame 5 can be provided with a threaded rod, and the connecting plate 4 can be provided with an internal threaded hole, and the installation of the connecting plate 4 and the mirror frame 5 is achieved through the cooperation of the threaded rod and the internal threaded hole.

[0052] The above-mentioned pointer 3 and scale 11 can be made of materials that are resistant to oxidation and corrosion. In order to facilitate the measurement of the straightness of the object to be measured 6 in a place with dim light, fluorescent powder can be applied on the scale 11 and the pointer 3, so as to facilitate the observation of the scale of the scale 11 in a dark place.

[0053] The scale 11 can be installed on the board surface of the base 1 with double-sided tape, where the position of the scale 11 corresponds to the pointer 3.

[0054] Since marble has the advantages of dense texture, low hardness, easy processing, carving, grinding, and polishing, and after polishing, marble is smooth and delicate, with natural and smooth textures and high decorative value. In addition, marble also has the characteristics of low water absorption, high durability, relatively high compressive strength, and wear resistance without deformation. Therefore, the above-mentioned base 1 can be made of marble material. When installing the object to be measured 6, such as a guide rail, on the platform of the marble-made base 1, it should be noted that since the installation of the guide rail requires a reference surface, when processing on the platform of the marble base 1, the distances from both sides of the guide rail installation groove to the edge of the platform can be different. At the same time, the bottom surface and one side of the installation groove can be ground as the installation surface. During installation, it should be noted that the guide rail should be closely attached to the bottom surface and one side installation surface serving as the reference, and there should be a gap on the non-installed side. For stability, when applied to the teaching scenario, the guide rail can be directly fixed with screws.

[0055] The above-mentioned instrument may or may not include a reflector, and the embodiments of the present invention do not limit this.

[0056] The above-mentioned instrument may or may not include a laser tester, and the embodiments of the present invention do not limit this.

[0057] The testing principle of the laser tester can be as follows: The laser tester may include a laser generator and a laser receiver. The laser generator generates laser, and the generated laser is emitted to the reflector. The reflector reflects the laser, and the reflected laser image is received by the laser receiver in the laser tester to determine whether there is a deviation between the laser received by the laser receiver and the laser emitted by the laser emitter. If there is a deviation, it indicates that the straightness of the object to be measured 6 is poor, and the greater the deviation, the worse the straightness of the object to be measured 6. That is to say, the more crooked the object to be measured 6 is, and the smaller the deviation, the straighter the object to be measured 6 is. If there is no deviation, it indicates that the straightness of the object to be measured 6 is good.

[0058] The working principle of the above-mentioned instrument for measuring straightness is as follows: The object to be measured 6 is divided into multiple test segments by the scale 11. For each divided test segment, the laser tester is turned on to generate laser, and the generated laser is emitted into the reflector. At the same time, the reflector emits the laser into the receiver of the laser tester. The deviation angle between the received laser and the emitted laser is determined by the receiver to determine the straightness of this test segment. After testing this test segment, the next test segment is tested in the same repeated method and recorded. Finally, the straightness of the object to be measured 6 is the average value of the straightness of each recorded test segment.

[0059] As can be seen, the instrument for measuring straightness provided by the embodiment of the present invention includes a base 1, a slider 2, a pointer 3, a connecting plate 4 and a mirror frame 5; a scale 11 is provided on one side plate surface of the base 1, and an object to be measured 6 is installed on the plate surface of the base 1 at a first preset distance from the scale 11; the slider 2 is used to be cooperatively installed on the object to be measured 6, and the slider 2 can slide relative to the object to be measured 6; a connecting plate 4 is installed on the slider 2; a mirror frame 5 is installed on the connecting plate 4, and a pointer 3 is also installed on the plate surface of the connecting plate 4 on the side opposite to the scale 11; the mirror frame 5 is used to install a reflecting mirror, and the reflecting mirror is used to receive the laser generated by a laser tester placed on one side of the reflecting mirror and reflect the laser, so that the laser tester receives the laser reflected by the reflecting mirror and determines the straightness of the object to be measured 6 according to the emitted laser. Compared with the prior art, the instrument provided by the embodiment of the present invention not only adds a scale 11, but also limits the position of the mirror frame 5, so as to reduce the complexity of measurement. At the same time, by moving the slider 2, the straightness of each test section can be tested conveniently, quickly and stably. Furthermore, compared with manually dividing the test section or repeatedly trying to correct the reflecting mirror, the error caused by manual estimation and correction can be reduced, and the test accuracy of the straightness of the object to be tested can be improved.

[0060] When the above mirror frame 5 is stored, it may have the characteristics of being inconvenient to disassemble and store. In view of this, in an embodiment of the present invention, as Figures 2-3 shown, the instrument further includes: a conversion device 7;

[0061] The conversion device 7 includes: a first connecting block 71, a second connecting block 72 and a connecting column 73; a first magnet 711 is provided at a first preset position on one side plate surface of the first connecting block, and the other side plate surface of the first connecting block is installed on the connecting plate 4;

[0062] A second magnet 721 is provided at a second preset position on one side plate surface of the second connecting block 72, and a connecting column 73 is installed on the other side plate surface of the second connecting block 72, and the first connecting block and the second connecting block 72 are in a connected state by attracting each other through the first magnet 711 and the second magnet 721;

[0063] The mirror frame 5 is installed on the connecting column 73.

[0064] Among them, the determination of the first preset position on one side plate surface of the first connecting block is related to the number of the first magnets 711, and is also related to the installation position of the second magnets 721 in the second connecting block 72. The first preset position is the installation position of the first magnets 711 and corresponds to the installation position of the second magnets 721 in the second connecting block 72.

[0065] The determination of the second preset position on one side plate surface of the second connecting block 72 is related to the number of the second magnets 721, and is also related to the installation position of the first magnets 711 in the second connecting block 72. The second preset position is the installation position of the second magnets 721 and corresponds to the installation position of the first magnets 711 in the first connecting block.

[0066] The first connecting block can be connected using the first magnets 711 and the second magnets 721. When the separating force is greater than the attractive force of the first magnets 711 and the second magnets 721, the first connecting block and the second connecting block 72 are separated. The separated first connecting block and second connecting block 72 are convenient for collection, disassembly, and cleaning of the mirror.

[0067] It can be seen that at the first preset position on one side plate surface of the first connecting block in the instrument of this embodiment, the first magnets 711 are provided, and the other side plate surface of the first connecting block is mounted on the connecting plate 4; at the second preset position on one side plate surface of the second connecting block 72, the second magnets 721 are provided, and a transfer post 73 is mounted on the other side plate surface of the second connecting block 72. The first connecting block and the second connecting block 72 are in a connected state by the attraction of the first magnets 711 and the second magnets 721; the mirror frame 5 is mounted on the transfer post 73. It is convenient for disassembly and collection of the components in the instrument.

[0068] When the above conversion device 7 is installed, it may be difficult to align the first magnets 711 with the second magnets 721, resulting in complex and time-consuming installation. Based on this, in an embodiment of the present invention, the conversion device 7 further includes: a limiting member 74 and a connecting post 75;

[0069] The limiting member 74 is mounted on the first connecting block or the second connecting block 72. If the limiting member 74 is mounted on the first connecting block, the second connecting block 72 is provided with a limiting groove 761 that cooperates with the limiting member 74;

[0070] The connecting post 75 is mounted on the side wall of the first connecting block or the second connecting block 72 so that when the connecting post 75 is rotated, the first magnets 711 and the second magnets 721 are misaligned to separate the first connecting block and the second connecting block 72.

[0071] Among them, when the limiting member 74 can be mounted on the first connecting block, the second connecting block 72 is mounted with a limiting groove 761 that cooperates with the limiting member 74;

[0072] When the limiting member 74 can be mounted on the second connecting block 72, the first connecting block is mounted with a limiting groove 761 that cooperates with the limiting member 74.

[0073] The connecting column 75 can be installed on the side wall of the first connecting block 71 or connected to the side wall of the second connecting block 72. When the connecting column 75 is rotated, the first magnet 711 and the second magnet 721 are misaligned, and at this time, the first connecting block and the second connecting block 72 are separated.

[0074] When connecting the first connecting block and the second connecting block 72, the first connecting block and the second connecting block 72 can be connected together according to the positions of the limiting member 74 and the limiting groove 761.

[0075] It can be seen that the conversion device 7 of this embodiment further includes a limiting member 74 and a connecting column 75; the limiting member 74 is installed on the first connecting block or the second connecting block 72. If the first connecting block is installed with the limiting member 74, the second connecting block 72 is provided with a limiting groove 761 that cooperates with the limiting member 74; the connecting column 75 is installed on the side wall of the first connecting block or the second connecting block 72 so that when the connecting column 75 is rotated, the first magnet 711 and the second magnet 721 are misaligned to separate the first connecting block and the second connecting block 72. The settings of the limiting member 74 and the limiting groove 761 can position the connection of the first connecting block and the second connecting block 72, thereby saving the connection time.

[0076] In an embodiment of the present invention, as Figures 2 to 3 shown, when the limiting member 74 is installed on the first connecting block, the conversion device 7 further includes a ball component 76, and the limiting member 74 is a round ball 741;

[0077] The ball component 76 includes two cylindrical balls, and a limiting groove 761 that cooperates with the round ball 741 is provided between the two cylindrical balls;

[0078] The two cylindrical balls of the ball component 76 are fixedly installed on the first connecting block at a second preset distance;

[0079] The second connecting block 72 is provided with a round ball 741 that cooperates with the limiting groove 761.

[0080] Among them, a round ball 741 is installed on the plate surface of the second connecting block 72 opposite to the plate surface where the limiting groove 761 is provided in the first connecting block. The round ball 741 and the limiting groove 761 are in point contact. The round ball 741 can be slid into the limiting groove 761, and when attempting to position the limiting groove 761 and the round ball 741, the round ball 741 will not scratch the surface of the first connecting block during the sliding process on the surface of the first connecting block.

[0081] The two cylindrical balls of the above-mentioned ball component 76 are fixedly installed on the first connecting block at a second preset distance; among them, the second preset distance can be less than or equal to the cross-section of the limiting groove.

[0082] In addition, the round ball bearings 741 between the first connecting block and the second connecting block 72 can prevent the first magnet 711 and the second magnet 721 from coming into contact, but the attractive force between the first magnet 711 and the second magnet 721 can be utilized to attract the first connecting block and the second connecting block 72 together.

[0083] It can be seen that the two cylindrical ball bearings of the ball bearing assembly 76 in this embodiment are fixedly installed on the first connecting block at a second preset distance; the second connecting block 72 is provided with round ball bearings 741 that cooperate with the limiting grooves 761, which can quickly and accurately position the first magnet 711 in the first connecting block and the second magnet 721 in the second connecting block 72.

[0084] Since the height of the base 1 may be too high, resulting in the reflector on the mirror frame 5 being too high, the reflected light emitted by the existing laser tester cannot be accurately emitted onto the reflector. Based on this, the instrument provided in the embodiment of the present invention further includes: a laser tester with adjustable height.

[0085] Among them, the laser tester with adjustable height can adjust the height of the laser tester so that the laser generated by the laser tester can be emitted onto the reflector.

[0086] It can be seen that the laser tester with adjustable height included in the instrument of this embodiment can adjust the height of the laser tester, making the emitted laser shine on the reflector, further improving the flexibility of the instrument.

[0087] In an embodiment of the present invention, the laser tester can be an optoelectronic autocollimator.

[0088] The optoelectronic autocollimator is a complete set of high-precision angle measurement systems.

[0089] Its working principle: A target located on the rear focal plane of the collimating lens is illuminated by a light source, and its image is transmitted to infinity and reflected by a reflector. The reflected image is received by a photoelectric receiver. A slight deviation between the optical axis of the optoelectronic autocollimator and the angle of the reflector will cause a shift in the imaging position on the receiver, thereby very precisely detecting this slight deviation angle.

[0090] It can be seen that the optoelectronic autocollimator in this embodiment can improve the accuracy of measuring the straightness of the object to be measured 6.

[0091] In an embodiment of the present invention, as Figure 4 shown, the mirror frame 5 includes a bracket and a frame.

[0092] Among them, one end of the bracket is installed on the connecting plate 4, and the other end of the bracket is installed with a frame.

[0093] Among them, the end of the bracket where it is installed with the connecting plate 4 can be provided with an external thread as a threaded rod, and an internal threaded hole can be provided in the connecting plate 4. The installation of the connecting plate 4 and the mirror frame 5 is achieved through the cooperation of the threaded rod and the internal threaded hole.

[0094] As Figure 4 shown, the above-mentioned spectacle frame can be set as an open semi-circular spectacle frame to facilitate the installation and unloading of the mirror. Also, a tightening knob can be provided in the spectacle frame. When the tightening knob is tightened, the opening of the semi-circular spectacle frame becomes smaller, so that the spectacle frame clamps the reflecting mirror. When the tightening knob is loosened, the opening of the semi-circular spectacle frame becomes larger, so that the diameter of the spectacle frame becomes larger and the reflecting mirror can be easily taken out of the spectacle frame.

[0095] It can be seen that the mirror frame 5 of this embodiment includes a bracket and a spectacle frame. One end of the bracket is installed on the connecting plate 4, and the other end of the bracket is installed with a spectacle frame, which can facilitate the installation and disassembly of the reflecting mirror.

[0096] To facilitate the handling of the instrument, in an embodiment of the present invention, handles 12 can be respectively provided at opposite ends of the mounting plate surface of the base 1. Among them, anti-friction sleeves can be provided on the handles 12 to facilitate the handling of the instrument.

[0097] The instrument for measuring straightness provided by the embodiment of the present invention can be applied in industry and also in experimental teaching. For experimental teaching, since the purpose of experimental teaching is to teach students how to measure the straightness of the object to be measured 6, therefore, during teaching, it is not necessary to actually measure an object to be measured 6 with a length of five meters or even longer as in the industrial field. It is only necessary to give an object to be measured 6 with a length of 2 meters for experiments. Also, the 2-meter-long object to be measured 6 can be fixedly installed on the base 1. Moreover, compared with the existing measuring devices, this instrument does not require marking or calibration, is easier to operate, has higher accuracy, and is more convenient for students to master and measure.

[0098] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to this device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the device including the said element.

[0099] Each embodiment in this specification is described in a related manner. For the same or similar parts among the embodiments, reference can be made to each other. Each embodiment focuses on the differences from other embodiments. In particular, for the embodiments of the device, electronic device, storage medium or computer program product, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can refer to the partial description of the method embodiments.

[0100] The above are only the preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are all included in the protection scope of the present invention.

Claims

1. An instrument for measuring straightness, characterized in that, The instrument includes: a base (1), a slider (2), a pointer (3), a connecting plate (4), a mirror frame (5), and a conversion device (7); Among them, the base (1) is a rectangular plate-like structure, and a scale (11) is provided on one side plate surface of the base (1), and a test object (6) is to be installed on the plate surface of the base (1) at a first preset distance from the scale (11); The slider (2) is used to be cooperatively installed on the test object (6), and the slider (2) can slide relative to the test object (6); The connecting plate (4) is installed on the slider (2); The mirror frame (5) is installed on the connecting plate (4), and the pointer (3) is also installed on the plate surface of the connecting plate (4) on the side opposite to the scale (11); The mirror frame (5) is used to install a reflector, and the reflector is used to receive the laser generated by a laser tester placed on one side of the reflector and reflect the laser, so that the laser tester receives the laser reflected by the reflector and determines the straightness of the test object (6) according to the emitted laser; The conversion device (7) includes: a first connecting block (71), a second connecting block (72), and a transfer column (73); at a first preset position on one side plate surface of the first connecting block (71), a first magnet (711) is provided, and the other side plate surface of the first connecting block (71) is installed on the connecting plate (4); At a second preset position on one side plate surface of the second connecting block (72), a second magnet (721) is provided, and a transfer column (73) is installed on the other side plate surface of the second connecting block (72), and the first connecting block (71) and the second connecting block (72) are in a connected state by the attraction of the first magnet (711) and the second magnet (721); The mirror frame (5) is installed on the transfer column (73).

2. The instrument according to claim 1, characterized in that, The conversion device (7) further includes: a limiting member (74) and a connecting column (75); The limiting member (74) is installed on the first connecting block (71) or the second connecting block (72). If the limiting member (74) is installed on the first connecting block (71), then the second connecting block (72) is provided with a limiting groove (761) that cooperates with the limiting member (74); The connecting column (75) is installed on the side wall of the first connecting block (71) or the second connecting block (72) so that when the connecting column (75) is rotated, the first magnet (711) and the second magnet (721) are misaligned to separate the first connecting block (71) and the second connecting block (72).

3. The apparatus according to claim 2, wherein, When the limiting member (74) is installed on the first connecting block (71), the conversion device (7) further includes a ball component (76), and the limiting member (74) is a round ball (741); The ball component (76) includes two cylindrical balls, and a limiting groove (761) that cooperates with the round ball (741) is provided between the two cylindrical balls; The two cylindrical balls of the ball component (76) are fixedly installed on the first connecting block (71) at a second preset distance; The second connecting block (72) is provided with round ball bearings (741) that cooperate with the limiting grooves (761).

4. The instrument according to claim 1, characterized in that, The instrument further includes: a reflector mirror.

5. The instrument according to claim 4, characterized in that, The instrument further includes: a laser tester with adjustable height.

6. The instrument according to claim 5, wherein the laser tester is an optoelectronic autocollimator.

7. The instrument according to any one of claims 1 to 6, characterized in that, The base (1) is made of marble.

8. The instrument according to any one of claims 1 to 6, characterized in that The mirror frame (5) includes a bracket and a lens frame; Wherein, one end of the bracket is mounted on the connecting plate (4), and the other end of the bracket is mounted with the lens frame.

9. The instrument according to any one of claims 1 to 6, characterized in that, The opposite end portions of the mounting plate surface of the base (1) are respectively provided with handles (12).

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