Misalignment measuring device

Abstract

The present application relates to the technical field of wire cutting, in particular to a mis-slot measuring device. The present application aims to solve the problem that the existing mis-slot quantity determination method cannot accurately determine the mis-slot. To this end, the present application provides a mis-slot measuring device, which comprises a fixing part and a measuring part. The fixing part can be connected with the position to be fixed. The measuring part comprises a support structure, a rotating rod, an adjusting knob, a bearing assembly and a pointer assembly. One side of the support structure is rotatably connected with the rotating rod, and the other side of the support structure is connected with the fixing part. One side of the rotating rod is provided with the adjusting knob, and the other side of the rotating rod is provided with the bearing assembly. The pointer assembly is connected with the bearing assembly. The pointer assembly comprises a pointer rod and a pointer sheet, and the pointer sheet is arranged at one end of the pointer rod. The mis-slot measuring device of the present application can measure the mis-slot distance of the diamond wire without overshooting, improve the accuracy, and the mis-slot measuring device of the present application is simple to operate, which is conducive to improving the winding efficiency.

Description

Technical Field

[0001] This invention relates to the field of wire cutting technology, and more specifically to a misalignment measuring device. Background Technology

[0002] Wire EDM is a cutting method that uses the high-speed reciprocating motion of a metal wire to bring abrasive into the processing area of ​​the workpiece for grinding, simultaneously cutting hard and brittle materials into hundreds of thin wafers. Multi-wire EDM is achieved on a wire EDM machine. For example, in the production of solar cells, ingots need to be cut into silicon wafers using a wire EDM machine. Existing wire EDM machines are equipped with two or more parallel main rollers. The main rollers are engraved with grooves, and diamond wire is wound around the two main rollers in a staggered, spiral pattern according to the grooves to increase the twist of the diamond wire and the cutting force, thereby improving the stability of the wire mesh, cutting efficiency, and wafer yield.

[0003] After the new main roller is installed on the wire EDM machine, it is necessary to measure the misalignment of the diamond wire on the main roller. Existing technology uses wire mesh steel ruler or slot counting method to measure the misalignment of the diamond wire. Due to the small slot spacing and small number of misalignments, this measurement method is not only time-consuming and labor-intensive, but also has deviations when reading by individuals, resulting in inaccurate determination of the number of misalignments and inability to accurately misalign the wires. This can easily lead to problems such as large fluctuations in the thickness deviation of the cut silicon wafer and high frequency of wire breakage.

[0004] Accordingly, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0005] To address at least one of the aforementioned problems in the prior art, namely, to resolve the issue of inaccurate miscounting in existing methods for determining the number of miscounted slots, this application provides a miscounting measurement device, comprising:

[0006] The fixing part is capable of being connected to the position to be fixed;

[0007] The measuring unit includes a support structure, a rotating rod, an adjustment knob, a bearing assembly, and a pointer assembly. One side of the support structure is rotatably connected to the rotating rod, and the other side of the support structure is connected to the fixing part. The adjustment knob is provided on one side of the rotating rod. By rotating the adjustment knob, the rotating rod can rotate around its own axis and translate relative to the support structure. The bearing assembly is provided on the other side of the rotating rod, and the pointer assembly is connected to the bearing assembly. When the adjustment knob is rotated, the pointer assembly can only translate through the bearing assembly.

[0008] The pointer assembly includes a pointer bar and a pointer piece, with the pointer piece disposed at one end of the pointer bar.

[0009] In a preferred embodiment of the above-mentioned misalignment measuring device, the measuring unit further includes a housing, which is connected to the support structure and rotatably connected to the rotating rod. A display is mounted on the housing for reading the displayed value; or

[0010] The rotating rod is equipped with distance markings.

[0011] In the preferred embodiment of the above-mentioned misalignment measuring device, the pointer piece and the pointer rod are made of metal. The misalignment measuring device also includes an alarm, which includes an alarm circuit and two connecting terminals. The two connecting terminals can be connected to the diamond wire and the pointer rod respectively. When the pointer piece contacts the diamond wire, the alarm can emit an alarm signal; and / or

[0012] The side of the pointer piece furthest from the pointer bar is configured as a triangular structure.

[0013] In the preferred embodiment of the above-mentioned misalignment measuring device, the bearing assembly includes a bearing sleeve, a connector, a first bearing, a second bearing, and a spacer. The bearing sleeve is connected to the pointer assembly, and the connector is connected to the rotating rod.

[0014] Both the first bearing and the second bearing are disposed inside the bearing sleeve, and the first bearing, the second bearing and the connector are axially connected, with the two sides of the spacer abutting against the first bearing and the second bearing respectively.

[0015] In the preferred embodiment of the above-mentioned misalignment measuring device, the pointer piece and the pointer bar are detachably connected.

[0016] In the preferred embodiment of the above-mentioned misalignment measuring device, a slot is provided on one side of the pointer bar, and part of the pointer piece can be inserted into the slot along the length direction of the pointer bar.

[0017] In the preferred embodiment of the above-mentioned misalignment measuring device, the pointer bar is provided with multiple connection holes, and the pointer bar can be detachably connected to the bearing assembly through any one of the connection holes.

[0018] In the preferred embodiment of the above-mentioned misalignment measuring device, the fixing part includes a base and a fixing rod, the support structure is connected to the fixing rod, and the support structure is movable relative to the fixing rod in the extension direction of the fixing rod.

[0019] In the preferred embodiment of the above-mentioned misalignment measuring device, the support structure is sleeved on the fixed rod, and the support structure can slide relative to the fixed rod.

[0020] In the preferred embodiment of the above-mentioned misalignment measuring device, a first fixing hole and a second fixing hole are respectively provided on the adjacent two sides of the support structure;

[0021] When the support structure is fixedly connected to the fixing rod, the two connecting pieces pass through the first fixing hole and the second fixing hole respectively and abut against the fixing rod.

[0022] In the preferred embodiment of the above-mentioned misalignment measuring device, the base is configured as an adsorption type base or a fastening type base.

[0023] When using the above technical solution, the pointer is placed between the two diamond wires during measurement without contacting either of them, and the distance value obtained at this time is recorded. The misalignment measuring device of this application can measure the misalignment distance of the diamond wire on the two main rollers without overshooting the diamond wire, thereby improving the accuracy of determining the number of misalignments and providing a premise and foundation for achieving accurate misalignment. Furthermore, the misalignment measuring device of this application is simple to operate and is conducive to improving winding efficiency. Attached Figure Description

[0024] The misalignment measuring device of this application will now be described with reference to the accompanying drawings. In the drawings:

[0025] Figure 1 This is an overall structural diagram of the misalignment measuring device of this application;

[0026] Figure 2 This is a front view of the misalignment measuring device of this application;

[0027] Figure 3 This is a side view of the misalignment measuring device of this application;

[0028] Figure 4 This is a cross-sectional view of the bearing assembly of this application;

[0029] Figure 5 This is a schematic diagram illustrating the principle of misalignment measurement.

[0030] Figure 6 This is a schematic diagram of existing measurement methods;

[0031] Figure 7 This is a schematic diagram of the measurement method used in this application.

[0032] List of reference numerals

[0033] 3. Fixing part; 31. Base; 32. Fixing rod;

[0034] 5. Measuring section; 51. Support structure; 511. First fixing hole; 52. Rotating rod; 53. Adjusting knob; 54. Bearing assembly; 541. Bearing sleeve; 542. Connector; 543. First bearing; 544. Second bearing; 545. Spacer; 55. Pointer assembly; 551. Pointer bar; 5511. Connecting hole; 552. Pointer plate; 56. Housing; 561. Display;

[0035] 81. Pointer; 82. Diamond wire; 83. First main roller; 84. Second main roller; 85. First measuring distance; 86. Second measuring distance; 87. Measuring reference. Detailed Implementation

[0036] Preferred embodiments of this application will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this application and are not intended to limit the scope of protection of this application. For example, although the base in this embodiment is configured as a fastening base, this is not intended to limit the scope of protection of this application. Those skilled in the art can apply this application to other application scenarios without departing from the principles of this application. For example, the base can be configured as any of the following adsorption types: magnetic, suction cup, or repeatable adhesive.

[0037] It should be noted that in the description of this application, the terms "upper," "lower," "left," "right," "horizontal," "inner," and "outer," which indicate directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These terms are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Additionally, in the description of this application, "a plurality of" refers to at least two.

[0038] Furthermore, it should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0039] As described in the background section, wire cutting is a cutting process that uses the high-speed reciprocating motion of a metal wire to bring abrasive into the processing area of ​​the workpiece for grinding, simultaneously cutting hard and brittle materials into hundreds of thin wafers. Multi-wire cutting is achieved on a wire cutting machine. For example, in the production of solar cells, ingots need to be cut into silicon wafers using a wire cutting machine. Existing wire cutting machines are equipped with two or more parallel main rollers. The main rollers are engraved with grooves, and diamond wire is wound and laid on the two main rollers in a staggered, spiral pattern according to the grooves to increase the twist of the diamond wire and the cutting force, thereby improving the stability of the wire mesh, cutting efficiency, and wafer yield.

[0040] After the new main roller is installed on the wire EDM machine, it is necessary to measure the misalignment of the diamond wire on the main roller. Existing technology uses wire mesh steel ruler or slot counting method to measure the misalignment of the diamond wire. Due to the small slot spacing and small number of misalignments, this measurement method is not only time-consuming and labor-intensive, but also has deviations when reading by individuals, resulting in inaccurate determination of the number of misalignments and inability to accurately misalign the wires. This can easily lead to problems such as large fluctuations in the thickness deviation of the cut silicon wafer and high frequency of wire breakage.

[0041] To address the inaccuracy of existing methods for determining the number of misaligned slots, this application provides a misalignment measuring device, including a fixing part and a measuring part. The fixing part can be connected to the position to be fixed. The measuring part includes a support structure, a rotating rod, an adjusting knob, a bearing assembly, and a pointer assembly. One side of the support structure is rotatably connected to the rotating rod, and the other side of the support structure is connected to the fixing part. An adjusting knob is provided on one side of the rotating rod. Rotating the adjusting knob allows the rotating rod to rotate around its own axis and translate relative to the support structure. A bearing assembly is provided on the other side of the rotating rod, and the pointer assembly is connected to the bearing assembly. When the adjusting knob is rotated, the pointer assembly can only translate through the bearing assembly. The pointer assembly includes a pointer rod and a pointer piece, with the pointer piece disposed at one end of the pointer rod.

[0042] When using the above technical solution, the pointer is placed between the two diamond wires during measurement without contacting either of them, and the distance value obtained at this time is recorded. The misalignment measuring device of this application can measure the misalignment distance of the diamond wire on the two main rollers without overshooting the diamond wire, thereby improving the accuracy of determining the number of misalignments and providing a premise and foundation for achieving accurate misalignment. Furthermore, the misalignment measuring device of this application is simple to operate and is conducive to improving winding efficiency.

[0043] The following reference Figures 1 to 4 The misalignment measuring device of this application will be described. Figure 1 This is an overall structural diagram of the misalignment measuring device of this application; Figure 2 This is a front view of the misalignment measuring device of this application; Figure 3 This is a side view of the misalignment measuring device of this application; Figure 4 This is a cross-sectional view of the bearing assembly of this application.

[0044] like Figures 1 to 4 As shown, in a preferred embodiment, the misalignment measuring device includes a fixing part 3 and a measuring part 5. The fixing part 3 can be connected to the position to be fixed. The measuring part 5 includes a support structure 51, a rotating rod 52, an adjusting knob 53, a bearing assembly 54, a pointer assembly 55, and a housing 56. One side of the support structure 51 is rotatably connected to the rotating rod 52, and the other side of the support structure 51 is connected to the fixing part 3. An adjusting knob 53 is provided on one side of the rotating rod 52. By rotating the adjusting knob 53, the rotating rod 52 can rotate around its own axis and translate relative to the support structure 51. A bearing assembly 54 is provided on the other side of the rotating rod 52. The pointer assembly 55 is connected to the bearing assembly 54. When the adjusting knob 53 is rotated, the pointer assembly 55 can only translate through the bearing assembly 54. The housing 56 is connected to the support structure 51 and is rotatably connected to the rotating rod 52. A display 561 is provided on the housing 56 for reading the reading.

[0045] The fixing part 3 includes a base 31 and a fixing rod 32. The base 31 is a fastening type, meaning it can be connected to the position to be fixed via a connector. A support structure 51 is connected to the fixing rod 32 and can move relative to the fixing rod 32 in the extending direction of the fixing rod 32. Specifically, the support structure 51 is sleeved on the fixing rod 32, which is horizontally positioned, and the support structure 51 can slide horizontally relative to the fixing rod 32. A first fixing hole 511 and a second fixing hole are respectively provided on adjacent sides of the support structure 51. When the support structure 51 is fixedly connected to the fixing rod 32, two connectors pass through the first fixing hole 511 and the second fixing hole respectively and abut against the fixing rod 32. Specifically, the support structure 51 has a first fixing hole 511 and a second fixing hole on its side and bottom respectively, and the connectors are wing screws.

[0046] The pointer assembly 55 includes a pointer bar 551 and a pointer piece 552. The pointer piece 552 is disposed at one end of the pointer bar 551 and is detachably connected to the pointer bar 551. Specifically, a slot is provided on one side of the pointer bar 551, and part of the pointer piece 552 can be inserted into the slot along the length direction of the pointer bar 551. The side of the pointer piece 552 away from the pointer bar 551 is configured as a triangular structure. The pointer bar 551 has multiple connecting holes 5511, and the pointer bar 551 can be detachably connected to the bearing assembly 54 through any one of the connecting holes 5511.

[0047] The bearing assembly 54 includes a bearing sleeve 541, a connector 542, a first bearing 543, a second bearing 544, and a spacer 545. The bearing sleeve 541 is connected to the pointer assembly 55, and the connector 542 is connected to the rotating rod 52. The first bearing 543 and the second bearing 544 are both disposed inside the bearing sleeve 541, and are axially connected to the connector 542. The two sides of the spacer 545 abut against the first bearing 543 and the second bearing 544, respectively. Specifically, as shown... Figure 4 As shown, one end of the connector 542 can be interference-fitted with the rotating rod 52 or connected to the rotating rod 52 via a set screw, so that the connector 542 can be fixed to the rotating rod 52. The other end of the connector 542 is directly inserted into the first bearing 543, the second bearing 544 and the spacer 545. The first bearing 543, the second bearing 544 and the connector 542 can be fixed by the screw and washer on the left side of the first bearing 543. At this time, the screw is directly inserted into the connector 542 and screwed into the connector 542.

[0048] It should be explained that the usage of the misalignment measuring device of this application can be understood in conjunction with the usage of the micrometer in the prior art. By turning the adjustment knob 53, the rotating rod 52 can rotate around its own axis and simultaneously make a translational movement. The adjustment knob 53 usually includes a coarse adjustment knob and a fine adjustment knob. When the rotating rod 52 rotates around its own axis, the bearing sleeve 541 can be kept stationary through the first bearing 543 and the second bearing 544. Therefore, when the adjustment knob 53 is turned, the pointer assembly 55 can only make a translational movement.

[0049] The following reference Figures 5 to 7 The principle for determining the number of misaligned slots in this application will be explained, wherein, Figure 5 This is a schematic diagram illustrating the principle of misalignment measurement. Figure 6 This is a schematic diagram of existing measurement methods; Figure 7 This is a schematic diagram of the measurement method used in this application.

[0050] like Figure 5 As shown, the first main roller 83 and the second main roller 84 are provided with grooves. Diamond wire 82 is wound and routed on the two main rollers in a staggered, spiral pattern according to the groove shape. In the prior art, during measurement, it is necessary to measure a first measuring distance 85 and a second measuring distance 86. The first measuring distance 85 is the distance between the measuring reference 87 and the first diamond wire 82 on the first main roller 83, and the second measuring distance 86 is the distance between the measuring reference 87 and the first diamond wire 82 on the second main roller 84. Then, the number of misaligned grooves is obtained based on the ratio of the difference between the two measuring distances to the groove spacing. Therefore, determining the number of misaligned grooves essentially requires determining the distance difference between the diamond wire 82 and the first main roller 83 and the second main roller 84.

[0051] like Figure 6As shown, in the prior art, the determination of the two measurement distances is directly completed by measuring fixtures. During measurement, the distance when the pointer 81 touches the diamond wire 82 is used as the basis. However, the diameter of the diamond wire 82 is generally between 10um and 100um, and the distance between the two main rollers is very far. When the pointer 81 touches the diamond wire 82, there may be an overshoot phenomenon. At this time, it is difficult to observe whether the diamond wire 82 has been bent by the human eye and a magnifying glass alone. Or, by the time the human eye can observe that the diamond wire 82 has been bent, the measurement has already had a millimeter-level error. This leads to inaccurate determination of the number of misaligned slots and inability to accurately misalign slots, which in turn easily leads to problems such as large fluctuations in the thickness deviation of the cut silicon wafer and high frequency of wire breakage.

[0052] like Figure 7 As shown, in this application, during measurement, the pointer piece 552 needs to be placed between two adjacent diamond wires 82. The width or thickness of the pointer piece 552 is slightly smaller than the horizontal distance between the two diamond wires 82. In one possible implementation, taking a 40µm slot pitch and a diamond wire 82 diameter of 30µm as an example, the horizontal distance between the two diamond wires 82 is 40µm - 30µm / 2 - 30µm / 2 = 10µm. In this case, an 8µm pointer piece 552 can be selected. When the pointer piece 552 is placed between two adjacent diamond wires 82 without contacting either diamond wire 82, a measurement value can be obtained. It can be seen that the maximum error of this measurement value is only 1µm, which is extremely small and negligible compared to a 40µm slot pitch.

[0053] Return to reference Figure 5 When determining the number of misaligned grooves, the pointer plate 552 can be placed between the first diamond wire 82 and the second diamond wire 82 on the first main roller 83 to obtain the first measurement value. Then, the pointer plate 552 can be placed between the first diamond wire 82 and the second diamond wire 82 on the second main roller 84 to obtain the second measurement value. The difference between the two measurement values ​​is the distance difference between the diamond wires 82 between the first main roller 83 and the second main roller 84, which is the misalignment distance.

[0054] The following will continue to combine Figures 1 to 4 The method of using the misalignment measuring device of this application will be described.

[0055] When using the misalignment measuring device, first connect the base 31 to the fixed position corresponding to the first measuring point, such as the axle box. Then adjust the relative position of the support structure 51 and the fixing rod 32. After determining the position of the support structure 51, tighten the two wing screws to fix the support structure 51 and the fixing rod 32. During the measurement process, rotating the bearing sleeve 541 allows the pointer piece 552 to enter between two adjacent diamond wires 82 from above. By turning the adjusting knob 53, the horizontal distance of the pointer assembly 55 can be adjusted so that the pointer piece 552 is located between two adjacent diamond wires 82 on the main roller without contacting any of the diamond wires 82. At this time, the first measurement value is recorded.

[0056] Then, the base 31 is removed and connected to the position to be fixed corresponding to the second measurement point. The relative position of the support structure 51 and the fixing rod 32 remains unchanged. Then, by turning the adjustment knob 53 and rotating the bearing sleeve 541, the pointer piece 552 is positioned between the two identical diamond wires 82 on the main roller and does not contact either diamond wire 82. The second measurement value is recorded. The difference between the two measurement values ​​is the misalignment distance. Finally, the number of misalignments is determined according to the ratio of the misalignment distance to the groove distance. If the number of misalignments does not meet the expectations, the winding is re-performed.

[0057] It should be explained that in this embodiment, the measurement value obtained by the measuring unit 5 represents the horizontal movement distance of the rotating rod 52 relative to the support structure 51. However, its setting is not fixed. In one possible embodiment, if the distance between the support structure 51 and the fixed part 3 cannot be changed, the measurement value obtained by the measuring unit 5 can also be the distance difference between the base 31 and the pointer piece 552. Those skilled in the art can change the physical meaning of the measurement value according to their needs, as long as it does not affect the calculation of the misalignment distance.

[0058] In addition, this application also includes a misalignment measuring device and an alarm (not shown in the figure). The alarm includes an alarm circuit and two connecting terminals, which can be connected to the diamond wire 82 and the pointer rod 551 respectively. When the pointer piece 552 contacts the diamond wire 82, the alarm can emit an alarm signal. Specifically, in this embodiment, the pointer piece 552 and the pointer rod 551 are made of metal, and the main roller is coated with insulating material. During measurement, the two connecting terminals are connected to the diamond wire 82 and the pointer rod 551 respectively. When the pointer piece 552 contacts the diamond wire 82, the entire circuit is connected, and the alarm can emit an alarm signal. The alarm can be set to a buzzer sound and / or an indicator light. When the buzzer soundes or the indicator light is on, it indicates that the pointer piece 552 is in contact with the diamond wire 82; otherwise, it indicates that the pointer piece 552 is not in contact with any of the diamond wires 82. At this time, the measurement value is recorded.

[0059] Those skilled in the art will understand that in this embodiment, the measuring unit 5 includes a housing 56 and a display 561 for displaying measurement values, but its configuration is not fixed. In an alternative embodiment, the housing 56 and the display 561 can be omitted. In this case, a distance scale can be provided on the rotating rod 52, and the technician can obtain the measurement value through the distance scale. Of course, the display 561 and the distance scale can also be provided simultaneously.

[0060] It should be explained that the arrangement of the alarm and pointer assembly 55 is not mandatory. In one possible implementation, when the pointer piece 552 is adjusted to avoid contact with any of the diamond wires 82, a technician can observe this visually using a high-powered magnifying glass. In this case, the pointer piece 552 and pointer rod 551 may not be metal structures. Furthermore, the structural arrangement of the pointer piece 552 is not essential. Those skilled in the art can modify the structural arrangement as needed. For example, setting the pointer piece 552 as a rectangular structure, an isosceles trapezoidal structure, or an arc-shaped structure will not affect the normal functioning of the pointer piece 552.

[0061] Furthermore, the configuration of the bearing assembly 54 is not fixed. Those skilled in the art can modify its specific configuration according to requirements, as long as it does not affect the normal functioning of the bearing assembly 54. For example, the connector 542 can be omitted, allowing the rotating rod 52 to connect directly to the first bearing 543 and the second bearing 544. Alternatively, one end of the connector 542 may not be inserted into the first bearing 543 or the second bearing 544; in this case, it is sufficient that the connector 542 abuts against the right side of the second bearing 544.

[0062] Those skilled in the art will also understand that, since the diameter or groove pitch of the diamond wire 82 used during cutting will vary depending on the cutting requirements, the pointer piece 552 and the pointer rod 551 are detachably connected in this embodiment. Those skilled in the art can select pointer pieces 552 of different thicknesses as needed to keep the maximum measurement error within a certain range; however, this is not mandatory. In an alternative embodiment, the pointer piece 552 and the pointer rod 551 are integrally formed, and different models of pointer rods 551 have pointer pieces 552 of different thicknesses. Furthermore, the slotted design is not mandatory. In an alternative embodiment, the pointer piece 552 can be connected to the pointer rod 551 from one side in the width or thickness direction. In addition, in this embodiment, the extension length of the pointer rod 551 can be adjusted by the multiple connecting holes 5511 on the pointer rod 551; however, this is not mandatory. In an alternative embodiment, the pointer rod 551 can be connected to the bearing assembly 54 through only one connecting hole 5511, and the pointer rod 551 can also be made into a telescopic form.

[0063] It should also be explained that the setting of the fixing part 3 is not fixed. For example, in this embodiment, the base 31 is set as a fastening base, that is, the base 31 can be connected to the position to be fixed through the connector. However, the base 31 can also be set as an adsorption base, which can be any of the following: magnetic, suction cup, or repeatable adhesive. Furthermore, theoretically, the misalignment distance can be determined by any two adjacent diamond wires 82. In this case, the setting that the support structure 51 can move relative to the fixing rod 32 is not necessary. However, in this embodiment, for ease of observation, the misalignment distance is determined by the first diamond wire 82 and the second diamond wire 82. The fixing rod 32 allows the measuring part 5 to move horizontally as a whole, preventing the pointer piece 552 from failing to enter between the first and second diamond wires 82 due to the limited horizontal movement distance of the pointer assembly 55.

[0064] Furthermore, since the support structure 51 can move relative to the fixed rod 32, the connection method between the support structure 51 and the fixed rod 32 is not fixed. Those skilled in the art can modify it according to their needs. For example, in one alternative embodiment, the fixed rod 32 can be set in the form of a U-shaped track, with the bottom of the support structure 51 located inside the fixed rod 32. In another alternative embodiment, the fixed rod 32 can be tilted.

[0065] For example, although two wing screws abut against the fixing rod 32 in this embodiment, this is only for the convenience of manual tightening by technicians. Those skilled in the art can change the form of the screws as needed. Furthermore, those skilled in the art can also change the number and position of the fixing holes as needed, or multiple openings can be provided on the fixing rod 32 to allow the connector to be inserted into the fixing rod 32.

[0066] Those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, any of the claimed embodiments in the claims of this application can be used in any combination.

[0067] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. A misalignment measuring device, characterized in that, include: The fixing part (3) is capable of being connected to the position to be fixed; The measuring unit (5) includes a support structure (51), a rotating rod (52), an adjustment knob (53), a bearing assembly (54), and a pointer assembly (55). One side of the support structure (51) is rotatably connected to the rotating rod (52), and the other side of the support structure (51) is connected to the fixing part (3). The adjustment knob (53) is provided on one side of the rotating rod (52). By rotating the adjustment knob (53), the rotating rod (52) can rotate around its own axis and translate relative to the support structure (51). The bearing assembly (54) is provided on the other side of the rotating rod (52). The pointer assembly (55) is connected to the bearing assembly (54). When the adjustment knob (53) is rotated, the pointer assembly (55) can only translate through the bearing assembly (54). The pointer assembly (55) includes a pointer bar (551) and a pointer piece (552), with the pointer piece (552) disposed at one end of the pointer bar (551).

2. The misalignment measuring device according to claim 1, characterized in that, The measuring unit (5) further includes a housing (56), which is connected to the support structure (51) and rotatably connected to the rotating rod (52). A display (561) is mounted on the housing (56) for reading the readings; or The rotating rod (52) is provided with distance scale.

3. The misalignment measuring device according to claim 1, characterized in that, The pointer piece (552) and the pointer rod (551) are made of metal. The misalignment measuring device also includes an alarm, which includes an alarm circuit and two connecting terminals. The two connecting terminals can be connected to the diamond wire (82) and the pointer rod (551) respectively. When the pointer piece (552) contacts the diamond wire (82), the alarm can emit an alarm signal; and / or The side of the pointer piece (552) away from the pointer bar (551) is configured as a triangular structure.

4. The misalignment measuring device according to claim 1, characterized in that, The bearing assembly (54) includes a bearing sleeve (541), a connector (542), a first bearing (543), a second bearing (544), and a spacer (545). The bearing sleeve (541) is connected to the pointer assembly (55), and the connector (542) is connected to the rotating rod (52). The first bearing (543) and the second bearing (544) are both disposed inside the bearing sleeve (541), and the first bearing (543), the second bearing (544) and the connector (542) are axially connected. The two sides of the spacer (545) abut against the first bearing (543) and the second bearing (544) respectively.

5. The misalignment measuring device according to claim 1, characterized in that, The pointer piece (552) and the pointer bar (551) are detachably connected.

6. The misalignment measuring device according to claim 5, characterized in that, A slot is provided on one side of the pointer bar (551), and part of the pointer piece (552) can be inserted into the slot along the length direction of the pointer bar (551).

7. The misalignment measuring device according to claim 1, characterized in that, The pointer bar (551) has multiple connection holes (5511), and the pointer bar (551) can be detachably connected to the bearing assembly (54) through any one of the connection holes (5511).

8. The misalignment measuring device according to claim 1, characterized in that, The fixing part (3) includes a base (31) and a fixing rod (32). The support structure (51) is connected to the fixing rod (32), and the support structure (51) is movable relative to the fixing rod (32) in the extension direction of the fixing rod (32).

9. The misalignment measuring device according to claim 8, characterized in that, The support structure (51) is sleeved on the fixed rod (32), and the support structure (51) is slidable relative to the fixed rod (32).

10. The misalignment measuring device according to claim 9, characterized in that, The support structure (51) has a first fixing hole (511) and a second fixing hole on its adjacent sides respectively; When the support structure (51) is fixedly connected to the fixing rod (32), the two connecting pieces pass through the first fixing hole (511) and the second fixing hole respectively and abut against the fixing rod (32).

11. The misalignment measuring device according to claim 8, characterized in that, The base (31) is configured as an adsorption base or a fastening base.

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