Integrated patch tooling

Abstract

This invention relates to the field of sensor technology and provides an integrated patch mounting fixture. The integrated patch mounting fixture includes a first clamp and a second clamp arranged opposite to each other, a first limiting component, a second limiting component and a third limiting component spaced apart from each other, and a slide table. The first clamp includes a first clamp body and a mounting groove formed by a recess in the first clamp body. The second clamp includes a second clamp body and a protrusion extending from the second clamp body near the first clamp. The shape of the protrusion matches the mounting groove and is inserted into the mounting groove. The second clamp is simultaneously driven to move along a second direction by the second and third limiting components, causing the first and second pressure surfaces to approach each other, thereby pressurizing and curing strain gauges on the corresponding two surfaces of the strain beam. This invention provides high strain gauge patching efficiency and accuracy, thereby improving the performance and reliability of force sensors.

Description

Technical Field

[0001] This invention relates to the field of sensor technology, and in particular to an integrated mounting fixture for pressurizing and mounting strain gauges on the strain beam of a multidimensional force sensor. Background Technology

[0002] Six-dimensional force sensors, as core sensing elements capable of accurately detecting three-dimensional forces and moments in space, are widely used in high-end equipment fields such as industrial robots, precision manufacturing, and aerospace. Their performance stability and reliability directly determine the operational accuracy and safety of downstream equipment. Among the core components of a six-dimensional force sensor, the mating structure of the elastic body and strain gauge is crucial for achieving force-to-electrical signal conversion. The quality of the strain gauge patch directly affects the sensor's core performance indicators such as measurement accuracy, linearity, and hysteresis, and also has a decisive impact on the sensor's long-term operational reliability. Therefore, precise control of the strain gauge patching process parameters is one of the core technical points in the manufacturing process of six-dimensional force sensors.

[0003] In existing manufacturing processes for six-dimensional force sensors, to ensure the bonding strength, insulation performance, and stress transfer efficiency between the strain gauge and the elastomer, high-temperature curing adhesives are generally recommended for the strain gauge patches. The specific process involves curing all strain gauges in a single operation, meaning that all strain gauges require simultaneous heating and pressure holding to complete the curing process.

[0004] However, in practical applications, to achieve accurate detection of multi-dimensional forces / torques, six-dimensional force sensors typically employ complex, irregularly shaped elastomer designs, such as the widely used three-strain beam elastomer structure. This type of elastomer usually contains three independent strain beams, requiring at least 12 strain gauges to be attached to the 12 force-sensitive surfaces of the three strain beams. This complex elastomer structure presents significant limitations in mounting space: firstly, the spacing between the strain beams is narrow, resulting in dispersed strain gauge placement positions with varying spatial orientations; secondly, some mounting positions may be located in obstructed or deep cavity areas, restricting the mounting operation space and consequently leading to poor performance and reliability of the six-dimensional force sensor.

[0005] Therefore, it is necessary to provide a new integrated patch tooling to solve the above problems. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide an integrated mounting fixture that helps to improve the efficiency and accuracy of strain gauge mounting, enhance the control of strain gauge mounting process parameters, and thus improve the performance and reliability of a six-dimensional force sensor.

[0007] To address the aforementioned technical problems, embodiments of the present invention provide an integrated patch mounting fixture for pressurizing and mounting strain gauges on the strain beam of a multidimensional force sensor.

[0008] The integrated patch tooling includes a first clamp and a second clamp arranged opposite to each other, a first limiting component, a second limiting component and a third limiting component spaced apart from each other, and a slide table;

[0009] The first clamp includes a first clamp body and a mounting groove formed by a recess on one side of the first clamp body; the second clamp includes a second clamp body disposed opposite to the first clamp body and a protrusion formed by a protrusion on the side of the second clamp body near the first clamp; the shape of the protrusion matches the mounting groove and is inserted into the mounting groove; the slide is disposed in the mounting groove, the first limiting component extends through one end of the first clamp body along a first direction and is fixedly connected to the slide; the second limiting component and the third limiting component both extend along a second direction parallel to the insertion of the protrusion into the mounting groove and are respectively connected to the first clamp body, and the first direction and the second direction are perpendicular to each other, a third direction is defined to be perpendicular to the first direction and the second direction respectively, and the mounting groove extends through the first clamp body along the third direction;

[0010] The bottom of the mounting groove is defined as the first pressure surface, the side of the protrusion near the first pressure surface is defined as the second pressure surface, the side of the mounting groove wall away from the first limiting component is defined as the third pressure surface, and the side of the slide table near the third pressure surface is defined as the fourth pressure surface. The slide table is driven to move in the mounting groove along the first direction by the first limiting component, so that the third pressure surface and the fourth pressure surface move closer to each other, thereby pressurizing and curing the strain gauges on the corresponding two surfaces of the strain beam. The second clamp is simultaneously driven to move along the second direction by the second limiting component and the third limiting component, so that the first pressure surface and the second pressure surface move closer to each other, thereby pressurizing and curing the strain gauges on the other two corresponding surfaces of the strain beam.

[0011] Preferably, the first clamp body has a first through hole extending from its top end along the first direction to the mounting groove; the first limiting component includes a first bolt and a first spring; the first bolt passes through the first through hole, and one end of the first bolt near the slide is screwed and fixed to the slide; the first spring is sleeved on the first bolt and located on the side of the slide away from the third pressure surface.

[0012] Preferably, the slide table includes a slide table body having a first threaded hole and a first limiting block and a second limiting block extending from opposite sides of the slide table body, respectively; the slide table body is disposed in the mounting groove such that the first threaded hole is directly opposite the first through hole, the first bolt is inserted into the first threaded hole to form a threaded connection, the first limiting block and the second limiting block are respectively located on opposite sides of the mounting groove along the third direction, and the first limiting block simultaneously slides against the same side of the protrusion and the first clamp body, and the second limiting block simultaneously slides against the other side of the protrusion and the first clamp body.

[0013] Preferably, the second clamp body includes a first connecting portion that is rectangular and columnar, which is disposed opposite to the first clamp body, a second connecting portion, and a third connecting portion that are respectively extended from opposite ends of the first connecting portion along the first direction; the protrusion is formed by the first connecting portion protruding from the side near the mounting groove, and the second limiting component and the third limiting component both penetrate the second connecting portion and the third connecting portion along the second direction, and both are connected to the first clamp body.

[0014] Preferably, the second connecting portion is provided with a second through hole extending through it in the second direction, and the third connecting portion is provided with a third through hole extending through it in the second direction; the first clamp body is provided with a second threaded hole and a third threaded hole on the side near the second clamp body, respectively facing the second through hole and the third through hole; the second limiting assembly includes a second bolt and a second spring sleeved on the second bolt, the second bolt passes through the second through hole and is inserted into the second threaded hole to form a threaded connection, and the second spring is clamped between the second connecting portion and the first clamp body; the third limiting assembly includes a third bolt and a third spring sleeved on the third bolt, the third bolt passes through the third through hole and is inserted into the third threaded hole to form a threaded connection, and the third spring is clamped between the third connecting portion and the first clamp body.

[0015] Preferably, the first bolt, the second bolt, and the third bolt have the same structure; the first spring, the second spring, and the third spring have the same stiffness.

[0016] Preferably, the second clamp further includes a clearance area formed by the recess of the first connecting portion from the side away from the first clamp toward the first clamp.

[0017] Compared with related technologies, this invention uses a protrusion whose shape matches the mounting groove and is inserted into the mounting groove to jointly mount the first and second clamps onto the strain beam. A slide is disposed in the mounting groove. A first limiting component is disposed at one end of the first clamp body and extends along a first direction from one end of the first clamp body towards its opposite end into the mounting groove and is fixedly connected to the slide. A second limiting component and a third limiting component are respectively disposed on the second clamp body and spaced apart from each other. The first limiting component drives the slide to move along the first direction in the mounting groove, so that the third and fourth pressure surfaces approach each other, thereby pressurizing and curing the strain gauges on the corresponding two surfaces of the strain beam. The second and third limiting components simultaneously drive the second clamp to move along the second direction, so that the first and second pressure surfaces approach each other, thereby pressurizing and curing the strain gauges on the other two corresponding surfaces of the strain beam. The integrated patch pressing fixture helps to improve the strain gauge patching efficiency, strain gauge patching accuracy, and control of strain gauge patching process parameters, thereby improving the performance and reliability of the multidimensional force sensor. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the integrated patch tooling provided in an embodiment of the present invention;

[0020] Figure 2 This is an exploded view of the integrated patch tooling provided in an embodiment of the present invention;

[0021] Figure 3 for Figure 1 Sectional view along line AA;

[0022] Figure 4 This is a schematic diagram of the structure of the slide table of the integrated patch tooling provided in an embodiment of the present invention;

[0023] Figure 5 For the present invention Figure 1 A schematic diagram of the three-dimensional structure of the integrated patch tooling installed on the multi-dimensional force sensor;

[0024] Figure 6 For the present invention Figure 1 An exploded view of the integrated patch tooling installed on a multi-dimensional force sensor;

[0025] Figure 7 for Figure 5Sectional view along line BB;

[0026] Figure 8 for Figure 7 A magnified view of part C;

[0027] Figure 9 A schematic diagram of the three-dimensional structure of the elastic body of the multidimensional force sensor provided in this embodiment of the invention. Figure 1 ;

[0028] Figure 10 A schematic diagram of the three-dimensional structure of the elastic body of the multidimensional force sensor provided in this embodiment of the invention. Figure 2 .

[0029] In the diagram, 100 is the integrated patch tooling; 1 is the first fixture; 11 is the first fixture body; 12 is the mounting slot; 13 is the first through hole; 14 is the second threaded hole; 15 is the third threaded hole; 16 is the first pressure surface; and 17 is the third pressure surface. 2. Second clamp; 21. Second clamp body; 211. First connecting part; 212. Second connecting part; 2121. Second through hole; 213. Third connecting part; 2131. Third through hole; 22. Protrusion; 23. Second pressure surface; 3. First limiting assembly; 31. First bolt; 32. First spring; 4. Second limiting assembly; 41. Second bolt; 42. Second spring; 5. Third limiting assembly; 51. Third bolt; 52. Third spring; 6. Slide table; 61. Slide table body; 62. First limiting block; 63. Second limiting block; 64. First threaded hole; 65. Fourth pressure surface; 7. Clearance position;

[0030] 200. Multidimensional force sensor; 10. Elastomer; 101. Elastomer body; 102. Central platform; 103. Strain beam; 1031. First surface; 1032. Second surface; 1033. Third surface; 1034. Fourth surface; 104. Clearance groove; 20. Strain gauge; 30. Spring structure. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1-10As shown, this embodiment of the invention provides an integrated patch mounting fixture 100 for pressurizing and mounting strain gauges 20 of the strain beam 103 of a multi-dimensional force sensor 200. The integrated patch mounting fixture 100 includes a first clamp 1 and a second clamp 2 arranged opposite to each other, a first limiting component 3, a second limiting component 4 and a third limiting component 5 spaced apart from each other, and a slide 6. The first clamp 1 and the second clamp 2 are used to pressurize and clamp the strain gauges 20 for mounting. The first limiting component 3 is used to adjust the lifting movement of the slide 6 to pressurize and fix the strain gauges 20. The second limiting component 4 and the third limiting component 5 are used to adjust the movement of the second clamp 2 towards the first clamp 1 to achieve pressurization and mounting of the strain gauges 20. Preferably, the integrated patch mounting fixture 100 is made of stainless steel, aluminum alloy, titanium alloy, or other metal materials, resulting in high structural strength and a long service life.

[0033] The first clamp 1 includes a first clamp body 11 and a mounting groove 12 recessed on one side of the first clamp body 11. The second clamp 2 includes a second clamp body 21 disposed opposite to the first clamp body 11 and a protrusion 22 extending from the side of the second clamp body 21 near the first clamp 1. The shape of the protrusion 22 matches the mounting groove 12 and is inserted into the mounting groove 12; it is used to fit the first clamp 1 and the second clamp 2 together onto the strain beam 103, and the slide 6 is disposed in the mounting groove 12. The first limiting component 3 extends through one end of the first clamp body 11 along a first direction (Z-axis) from one end of the first clamp body 11 toward its opposite end into the mounting groove 12 and is fixedly connected to the slide table 6. The second limiting component 4 and the third limiting component 5 are respectively disposed on the second clamp body 21 and spaced apart from each other. Both the second limiting component 4 and the third limiting component 5 extend along a second direction (X-axis) parallel to the insertion of the protrusion 22 into the mounting groove 12 and are respectively connected to the first clamp body 11. The first direction and the second direction are perpendicular to each other. A third direction (Y-axis) is defined to be perpendicular to both the first direction and the second direction. The mounting groove 12 extends through the first clamp body 11 along the third direction. The second limiting component 4 and the third limiting component 5 are respectively extended to connect with the first clamp body 11 and are respectively distributed on opposite sides of the mounting groove 12 along the first direction. The mounting groove 12 penetrates the first clamp body 11 along a third direction, allowing the side of the mounting groove 12 close to the second clamp 2 to pass through and avoid obstruction, so that the first clamp body 11 can be fitted onto the strain beam 103, thereby facilitating the integrated mounting fixture 100 to mount the strain gauge 20 on the strain beam 103.

[0034] The bottom of the mounting groove 12 is defined as the first pressure surface 16, the side of the protrusion 22 near the first pressure surface 16 is defined as the second pressure surface 23, the side of the mounting groove 12 away from the first limiting component 3 is defined as the third pressure surface 17, and the side of the slide table 6 near the third pressure surface 17 is defined as the fourth pressure surface 65. The slide table 6 is driven by the first limiting component 3 to move in the mounting groove 12 along the first direction, so that the third pressure surface 17 and the fourth pressure surface 65 move closer to each other, thereby pressurizing and curing the strain gauges 20 on the corresponding two surfaces of the strain beam 103. The second clamp is simultaneously driven by the second limiting component 4 and the third limiting component 5 to move along the second direction, so that the first pressure surface 16 and the second pressure surface 23 move closer to each other, thereby pressurizing and curing the strain gauges 20 on the other two surfaces of the strain beam 103. The integrated patch pressurization fixture of the present invention helps to improve the patching efficiency and accuracy of strain gauge 20, enhance the control of strain gauge 20 patching process parameters, and thus improve the performance and reliability of multidimensional force sensor 200.

[0035] In this embodiment, the first clamp body 11 has a first through hole 13 extending from its top end along the first direction to the mounting groove 12; the first limiting component 3 includes a first bolt 31 and a first spring 32; the first bolt 31 passes through the first through hole 13, and one end of the first bolt 31 near the slide table 6 is screwed and fixed to the slide table 6; the first spring 32 is sleeved on the first bolt 31 and located on the side of the slide table 6 away from the third pressure surface 17. By adjusting the screwing depth of the first bolt 31, the compression of the first spring 32 is adjusted, thereby adjusting the pressure of the strain gauge 20 corresponding to the first clamp 1, realizing integrated pressure application and holding in the strain gauge 20 patching process.

[0036] In this embodiment, the slide table 6 includes a slide table body 61 with a first threaded hole 64 and a first limiting block 62 and a second limiting block 63 extending from opposite sides of the slide table body 61. The slide table body 61 is disposed in the mounting groove 12 such that the first threaded hole 64 is directly opposite the first through hole 13. The first bolt 31 is inserted into the first threaded hole 64 to form a threaded connection. The first limiting block 62 and the second limiting block 63 are located on opposite sides of the mounting groove 12 along the third direction. The first limiting block 62 simultaneously slides against the same side of the protrusion 22 and the first clamp body 11, and the second limiting block 63 simultaneously slides against the other side of the same side of the protrusion 22 and the first clamp body 11. The first limiting block 62 and the second limiting block 63 ensure that the first clamp 1 and the second clamp 2 are always in a corresponding configuration, improving the pressure accuracy of the first clamp 1 and the second clamp 2.

[0037] In this embodiment, the second clamp body 21 includes a first connecting portion 211, which is rectangular and columnar, disposed opposite to the first clamp body 11, a second connecting portion 212, and a third connecting portion 213, which extend from opposite ends of the first connecting portion 211 along the first direction. The protrusion 22 protrudes from the side of the first connecting portion 211 near the mounting groove 12. The second limiting component 4 and the third limiting component 5 both penetrate the second connecting portion 212 and the third connecting portion 213 along the second direction, and are both connected to the first clamp body 11. By correspondingly distributing the first connecting portion 211 to the first clamp body 11, and by distributing the second limiting component 4 and the third limiting component 5 to the second connecting portion 212 and the third connecting portion 213, the second clamp 2 moves toward the first clamp 1 by simultaneously adjusting the second limiting component 4 and the third limiting component 5, thereby achieving integrated pressure application and holding of the strain gauge 20 on the corresponding surface and improving the mounting efficiency and accuracy of the strain gauge 20.

[0038] In this embodiment, the second connecting portion 212 is provided with a second through hole 2121 extending through it in the second direction, and the third connecting portion 213 is provided with a third through hole 2131 extending through it in the second direction; the first clamp body 11 is provided with a second threaded hole 14 and a third threaded hole 15 on the side near the second clamp body 21, respectively facing the second through hole 2121 and the third through hole 2131. The second limiting component 4 includes a second bolt 41 and a second spring 42 sleeved on the second bolt 41; the second bolt 41 passes through the second through hole 2121 and is inserted into the second threaded hole 14 to form a screw connection; the second spring 42 is clamped between the second connecting portion 212 and the first clamp body 11. By adjusting the screwing depth of the second bolt 41, the compression of the second spring 42 is adjusted, thereby adjusting the pressure of the strain gauge 20 corresponding to the second clamp 2, realizing integrated pressure application and holding in the strain gauge 20 patching process.

[0039] The third limiting component 5 includes a third bolt 51 and a third spring 52 sleeved on the third bolt 51. The third bolt 51 passes through the third through hole 2131 and is inserted into the third threaded hole 15 to form a screw connection. The third spring 52 is clamped between the third connecting part 213 and the first clamp body 11. By rotating the second bolt 41 and the third bolt 51 respectively, the protrusion 22 is moved closer to the first clamp 1 to achieve pressure on the strain gauge 20. By adjusting the screwing depth of the third bolt 51, the compression of the third spring 52 is adjusted, thereby adjusting the pressure of the strain gauge 20 corresponding to the third clamp, realizing integrated pressure application and holding in the strain gauge 20 patching process.

[0040] In this embodiment, the first bolt 31, the second bolt 41, and the third bolt 51 have the same structure; the first spring 32, the second spring 42, and the third spring 52 have the same stiffness. The same stiffness (i.e., elastic coefficient) ensures that the first spring 32, the second spring 42, and the third spring 52 have consistent force-deformation response characteristics when working together, thereby achieving key functions such as balanced load distribution, synchronous motion control, and improved system stability.

[0041] In this embodiment, the second clamp 2 further includes a clearance position 7 formed by recessing the first connecting portion 211 from the side away from the first clamp 1 toward the side closer to the first clamp 1. This facilitates the installation and clearance of the second clamp 2.

[0042] In this embodiment, the first limiting block 62 and the second limiting block 63 are fixed to the slide body 61 to form an I-shaped groove. The slide body 61 is assembled with the first clamp 1 and the second clamp 2 through the I-shaped groove to form an assembly of the first clamp 1, the second clamp 2 and the slide 6. The assembly is connected and clamped by the first bolt 31, the second bolt 41 and the third bolt 51. The first spring 32, the second spring 42 and the third spring 52 have the same stiffness. By adjusting the screwing depth of the first bolt 31, the second bolt 41 and the third bolt 51 respectively, the compression of the first spring 32, the second spring 42 and the third spring 52 is adjusted respectively, thereby adjusting the pressure of the first clamp 1 and the second clamp 2 on the strain gauge 20 on the strain beam 103, so as to realize the integrated pressure application and pressure holding in the strain gauge 20 patching process.

[0043] The specific usage method of this embodiment is as follows;

[0044] The multidimensional force sensor 200 includes an elastomer 10; the integrated patch tooling 100 includes three pieces, and the integrated patch tooling 100 and the elastomer 10 are spaced apart from each other.

[0045] The elastomer 10 includes an annular elastomer body 101, a central platform 102 spaced at the center of the elastomer body 101, and three strain beams 103 connecting the elastomer body 101 and the central platform 102. The strain beams 103 are disposed within the mounting groove 12 and spaced apart from the slide table 6. The three strain beams 103 are evenly arranged along the outer periphery of the central platform 102. Specifically, the three strain beams 103 are evenly arranged at an included angle of 120° along the outer periphery of the central platform 102.

[0046] The strain beam 103 has a rectangular structure and includes a first surface 1031 near the first pressure surface 16, a second surface 1032 near the second pressure surface 23, a third surface 1033 near the third pressure surface 17, and a fourth surface 1034 near the fourth pressure surface 65.

[0047] The strain gauge 20 comprises four strain gauges, which are respectively attached to the first surface 1031, the second surface 1032, the third surface 1033, and the fourth surface 1034. The first limiting component 3 drives the slide 6 to move, applying pressure and curing to the strain gauges 20 on the third surface 1033 and the fourth surface 1034. The second limiting component 4 and the third limiting component 5 drive the second clamp 2 to move, so that the second clamp 2 and the first clamp 1 move closer to each other, applying pressure and curing to the strain gauges 20 on the first surface 1031 and the second surface 1032. By adjusting the screwing depth of the first bolt 31, the compression of the first spring 32 can be adjusted, thereby adjusting the pressure of the slide 6 and the mounting groove 12 on the strain gauges 20 on the fourth surface 1034 and the third surface 1033 of the strain beam 103, realizing integrated pressure-holding and curing in the upper and lower strain gauge 20 attachment process. By adjusting the screwing depth of the second bolt 41 and the third bolt 51, the compression of the second spring 42 and the third spring 52 can be adjusted, thereby adjusting the pressure of the protrusion 22 and the mounting groove 12 on the strain gauges 20 of the second surface 1032 and the first surface 1031 of the strain beam 103, achieving integrated pressure application and holding in the strain gauge 20 mounting process on both sides. This improves the strain gauge 20 mounting efficiency and accuracy, enhances the control of strain gauge 20 mounting process parameters, and ultimately improves the performance and reliability of the multidimensional force sensor 200.

[0048] In this embodiment, the elastic body 10 further includes three clearance grooves 104 formed along the axial direction of the first limiting component 3 through the inner circumference of the elastic body 101. One end of each strain beam 103 near the elastic body 101 is located within one of the clearance grooves 104. The clearance grooves 104 provide clearance for the strain beam 103, facilitating clearance space when the strain beam 103 experiences strain. The multidimensional force sensor 200 also includes three spring sheet structures 30. The opposite ends of the spring sheet structures 30 are respectively fixed to the groove walls of the clearance grooves 104. One end of the strain beam 103 near the elastic body 10 is fixed to one of the spring sheet structures 30, and the side of the spring sheet structure 30 away from the strain beam 103 is spaced apart from the elastic body 101. The spring sheet structures 30 improve the strain performance of the strain beam 103, further enhancing the detection effect of the multidimensional force sensor 200.

[0049] Compared with related technologies, this invention uses a protrusion whose shape matches the mounting groove and is inserted into the mounting groove to jointly mount the first and second clamps onto the strain beam. A slide is disposed in the mounting groove. A first limiting component is disposed at one end of the first clamp body and extends along a first direction from one end of the first clamp body towards its opposite end into the mounting groove and is fixedly connected to the slide. A second limiting component and a third limiting component are respectively disposed on the second clamp body and spaced apart from each other. The first limiting component drives the slide to move along the first direction in the mounting groove, so that the third and fourth pressure surfaces approach each other, thereby pressurizing and curing the strain gauges on the corresponding two surfaces of the strain beam. The second and third limiting components simultaneously drive the second clamp to move along the second direction, so that the first and second pressure surfaces approach each other, thereby pressurizing and curing the strain gauges on the other two corresponding surfaces of the strain beam. The integrated patch pressing fixture helps to improve the strain gauge patching efficiency, strain gauge patching accuracy, and control of strain gauge patching process parameters, thereby improving the performance and reliability of the six-dimensional force sensor.

[0050] The above description is merely an embodiment of the present invention. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of the present invention, but these improvements all fall within the protection scope of the present invention.

Claims

1. An integrated patch tool for pressure bonding strain gauges mounted on a strain beam of a multi-dimensional force sensor, characterized by, The integrated patch tooling includes a first clamp and a second clamp arranged opposite to each other, a first limiting component, a second limiting component and a third limiting component spaced apart from each other, and a slide table; The first clamp includes a first clamp body and a mounting groove formed by a recess on one side of the first clamp body; the second clamp includes a second clamp body disposed opposite to the first clamp body and a protrusion formed by a protrusion on the side of the second clamp body near the first clamp; the shape of the protrusion matches the mounting groove and is inserted into the mounting groove; the slide is disposed in the mounting groove, the first limiting component extends through one end of the first clamp body along a first direction and is fixedly connected to the slide; the second limiting component and the third limiting component both extend along a second direction parallel to the insertion of the protrusion into the mounting groove and are respectively connected to the first clamp body, and the first direction and the second direction are perpendicular to each other, a third direction is defined to be perpendicular to the first direction and the second direction respectively, and the mounting groove extends through the first clamp body along the third direction; The bottom of the mounting groove is defined as the first pressure surface, the side of the protrusion near the first pressure surface is defined as the second pressure surface, the side of the mounting groove wall away from the first limiting component is defined as the third pressure surface, and the side of the slide table near the third pressure surface is defined as the fourth pressure surface. The slide table is driven by the first limiting component to move in the mounting groove along the first direction, so that the third pressure surface and the fourth pressure surface move closer to each other, thereby achieving pressure curing of the strain gauges on the corresponding two surfaces of the strain beam. The second clamp is driven to move along the second direction by the second limiting component and the third limiting component, so that the first pressure surface and the second pressure surface are brought closer to each other, thereby pressurizing and curing the strain gauges on the other two corresponding surfaces of the strain beam. The first clamp body has a first through hole extending from its top end along the first direction to the mounting groove; the first limiting component includes a first bolt and a first spring; the first bolt passes through the first through hole, and one end of the first bolt near the slide is screwed and fixed to the slide; the first spring is sleeved on the first bolt and located on the side of the slide away from the third pressure surface.

2. The integrated patch tooling of claim 1, wherein, The slide table includes a slide table body with a first threaded hole and a first limiting block and a second limiting block extending from opposite sides of the slide table body, respectively; the slide table body is disposed in the mounting groove such that the first threaded hole is directly opposite the first through hole, the first bolt is inserted into the first threaded hole to form a threaded connection, the first limiting block and the second limiting block are located on opposite sides of the mounting groove along the third direction, and the first limiting block simultaneously slides against the same side of the protrusion and the first clamp body, and the second limiting block simultaneously slides against the other side of the protrusion and the first clamp body.

3. The integrated patch tooling according to claim 1, characterized in that, The second clamp body includes a first connecting portion that is rectangular and columnar, which is disposed opposite to the first clamp body, a second connecting portion and a third connecting portion that are respectively extended from opposite ends of the first connecting portion along the first direction; the protrusion is formed by the first connecting portion protruding from the side near the mounting groove, and the second limiting component and the third limiting component both pass through the second connecting portion and the third connecting portion along the second direction, and both are connected to the first clamp body.

4. The integrated patch tooling according to claim 3, characterized in that, The second connecting portion is provided with a second through hole extending through it in the second direction, and the third connecting portion is provided with a third through hole extending through it in the second direction; the first clamp body is provided with a second threaded hole and a third threaded hole on the side near the second clamp body, respectively facing the second through hole and the third through hole; the second limiting assembly includes a second bolt and a second spring sleeved on the second bolt, the second bolt passes through the second through hole and is inserted into the second threaded hole to form a threaded connection, and the second spring is clamped between the second connecting portion and the first clamp body; the third limiting assembly includes a third bolt and a third spring sleeved on the third bolt, the third bolt passes through the third through hole and is inserted into the third threaded hole to form a threaded connection, and the third spring is clamped between the third connecting portion and the first clamp body.

5. The integrated patch tooling according to claim 4, characterized in that, The first bolt, the second bolt, and the third bolt have the same structure; the first spring, the second spring, and the third spring have the same stiffness.

6. The integrated patch tooling according to claim 3, characterized in that, The second clamp also includes a clearance area formed by the recess of the first connecting portion from the side away from the first clamp toward the direction of approaching the first clamp.

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