Tightening gun clamp

Abstract

The utility model discloses a tightening gun clamp. A tightening gun positioning device comprises a tightening gun clamping installation assembly, a workpiece positioning pin assembly and an air cylinder, sliding rail and sliding block linkage device. The tightening gun holding clamp installation assembly comprises a holding clamp, an air cylinder body and an air cylinder connector. The air cylinder, sliding rail and sliding block linkage device comprises a sliding rail mounting plate and a sliding rail and sliding block; the workpiece positioning pin assembly comprises a positioning pin, a positioning pin fixing block and an adjusting seat; the automatic floating adjusting device comprises a flange welding assembly and an automatic floating assembly. The automatic floating assembly comprises a first direction sliding set, a second direction sliding set, a sliding rail fixing plate and a tightening gun fixing plate. The device has the advantages that the air cylinder, sliding rail and sliding block linkage device and the workpiece positioning pin assembly can move along with the tightening gun, so that the tightening gun can achieve the effect of precisely positioning the thrust wheel through the positioning pin; and displacement floating of the tightening gun in two directions can be achieved, position deviation occurring in the tightening work is compensated, and the requirement for alignment matching precision is lowered.

Description

Technical Field

[0001] The utility model relates to a tightening gun fixture, belonging to the technical field of robot automation equipment. Background Art

[0002] In the manufacturing industry of automation equipment, the transfer or tightening of workpieces is often realized through fixtures, which requires a high matching accuracy between the fixtures and the workpieces. However, on the one hand, over-positioning or under-positioning may occur during the incoming process of the workpieces. On the other hand, the actions of the fixtures or manipulators may deviate, resulting in insufficient alignment accuracy of the fixtures, unsatisfactory matching degree, and even the situation of collision between the fixtures and the workpieces. In severe cases, workpiece damage and fixture structure damage may also occur. Therefore, position correction is required.

[0003] In the manufacturing industry of automation equipment, bolts are often tightened on workpieces through robots cooperating with tightening gun fixtures. However, in actual production applications, the incoming materials of the workpieces may be offset, resulting in deviation of the incoming position, thereby affecting the inaccurate position and low matching degree of the tightening fixture during alignment, making it impossible to tighten. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a tightening gun fixture.

[0005] To solve the above technical problem, the utility model provides a tightening gun fixture, including:

[0006] A tightening gun positioning device, which includes a tightening gun clamping installation component, a workpiece positioning pin component, and a cylinder-rail-slider linkage device;

[0007] The tightening gun clamping installation component includes a clamp, a first cylinder body, and a cylinder joint. The clamp is fixed outside the tightening gun, and the first cylinder body is fixed on the side of the clamp; the cylinder-rail-slider linkage device includes a rail installation plate and a rail slider. A rail is provided on the rail installation plate, and the rail slider is slidably connected to the rail. The rail slider is fixedly connected to the clamp, and the cylinder joint is fixedly connected to the rail installation plate; the workpiece positioning pin component includes a positioning pin, a positioning pin fixing block, and an adjustment seat. The positioning pin is fixedly connected to the positioning pin fixing block, the positioning pin fixing block is fixedly connected to the adjustment seat, and the adjustment seat is fixedly connected to the rail installation plate;

[0008] An automatic floating adjustment device, which includes a flange welding component and an automatic floating component;

[0009] The automatic floating component includes a first-direction sliding group, a second-direction sliding group, a slide rail fixing plate, and a tightening gun fixing plate; the first-direction sliding group is slidably connected to the flange welding component and the slide rail fixing plate respectively; the second-direction sliding group is slidably connected to the slide rail fixing plate and the tightening gun fixing plate respectively; the projection of the moving direction of the first-direction sliding group on the horizontal plane where the moving direction of the second-direction sliding group is located intersects with the moving direction of the second-direction sliding group.

[0010] Further, the cylinder slide rail slider linkage device further includes a limiting member, and the relatively adjustable distance between the two limiting members is provided at the upper and lower ends of the slide rail mounting plate; the limiting member is an adjusting bolt, and threaded holes matching the adjusting bolt are provided at the upper and lower ends of the slide rail mounting plate.

[0011] Further, the tightening gun clamping installation component further includes a limiting plate, and the limiting plate is fixedly connected to the clamp and is located between the two adjusting bolts.

[0012] Further, an adjusting gasket is provided at the fixing part where the adjusting seat and the slide rail mounting plate are fixedly connected.

[0013] Further, it is characterized in that

[0014] The first-direction sliding group includes two groups of first slide rails and sliders, and these two groups of first slide rails and sliders are respectively installed on the flange welding component and the slide rail fixing plate along the same direction;

[0015] The second-direction sliding group includes two groups of second slide rails and sliders, and these two groups of second slide rails and sliders are respectively installed on the slide rail fixing plate and the tightening gun fixing plate.

[0016] Further, the projection of the moving direction of the first-direction sliding group on the horizontal plane where the moving direction of the second-direction sliding group is located intersects with the moving direction of the second-direction sliding group at 90 degrees.

[0017] Further, the flange welding component is fixedly connected to a robot or a robotic arm; the tightening gun fixing plate is fixedly connected to the outer bearing seat of the tightening gun.

[0018] Further, the automatic floating adjustment device further includes a floating positioning component fixedly connected to the flange welding component;

[0019] The tightening gun fixing plate is provided with a locking limit seat;

[0020] The floating positioning component is inserted into or pulled out of the locking limit seat through a telescopic structure for locking or unlocking the first-direction sliding group and the second-direction sliding group.

[0021] Furthermore, the floating positioning component includes a second cylinder body, a cylinder mounting seat, and a floating positioning lock pin;

[0022] The cylinder mounting seat is fixedly connected to the second cylinder body and the flange welding component respectively, and the floating positioning lock pin is connected to the telescopic member of the second cylinder body.

[0023] Furthermore, the vertical cross-section of the end of the floating positioning lock pin is an inclined surface that is smaller at the bottom and larger at the top.

[0024] The beneficial effects achieved by the present utility model:

[0025] By providing a tightening gun clamping installation component outside the tightening gun and adding a cylinder slide rail slider linkage device and a workpiece positioning pin component, the present utility model enables the cylinder slide rail slider linkage device and the workpiece positioning pin component to move along with the tightening gun, so that the tightening gun can achieve precise positioning of the idler wheel through the positioning pin;

[0026] By fixing an automatic floating component at the lower part of the flange welding component and then installing the automatic floating component above the tightening gun fixing plate, the tightening gun can be made to achieve displacement floating in two directions, compensating for the position deviation occurring during the tightening operation and reducing the requirement for the alignment and fitting accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure of the tightening gun fixture;

[0028] Figure 2 is a schematic diagram of the overall structure of the tightening gun positioning device;

[0029] Figure 3 is a schematic diagram of the structure of the tightening gun clamping installation component;

[0030] Figure 4 is a schematic diagram of the structure of the workpiece positioning pin component;

[0031] Figure 5 is a schematic diagram of the structure of the cylinder slide rail slider linkage device;

[0032] Figure 6 is a schematic diagram of the structure of the automatic floating adjustment device in Embodiment 1;

[0033] Figure 7 is a schematic diagram of the structure of the automatic floating component in Embodiment 1;

[0034] Figure 8 is a schematic diagram of the structure of the automatic floating adjustment device in Embodiment 2;

[0035] Figure 9 is a front view of the automatic floating adjustment device in Embodiment 2;

[0036] Figure 10 is the side view of the automatic floating adjustment device in Embodiment 2;

[0037] Figure 11 is the structural schematic diagram of the floating positioning component in Embodiment 2;

[0038] Figure 12 is the cross-sectional view of the floating positioning component in Embodiment 2;

[0039] Figure 13 is the structural schematic diagram of the automatic floating device in Embodiment 2;

[0040] Figure 14 is the structural schematic diagram of the flange welding assembly of Embodiment 1 and Embodiment 2 of the present utility model Detailed implementation manners

[0041] The present utility model will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model and cannot be used to limit the protection scope of the present utility model.

[0042] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0043] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0044] Embodiment 1, as Figure 1As shown in the figure, this embodiment provides a tightening gun fixture for clamping a tightening gun 3 to tighten bolts on a processing part 4, including: a tightening gun positioning device 1 and an automatic floating adjustment device 2;

[0045] As Figure 2 shown in the figure, the tightening gun positioning device 1 includes a tightening gun clamp mounting assembly 11, a workpiece positioning pin assembly 12, and a cylinder-rail-slider linkage device 13;

[0046] As Figures 3 - 5 shown in the figure, the tightening gun clamp mounting assembly 11 includes a clamp 111, a first cylinder body 112, and a cylinder joint 113. The clamp 111 is fixed outside the tightening gun 3, and the first cylinder body 112 is fixed on the side of the clamp 111; the cylinder-rail-slider linkage device 13 includes a rail mounting plate 132 and a rail slider 131. A rail is provided on the rail mounting plate 132, and the rail slider 131 is slidably connected to the rail. The rail slider 131 is fixedly connected to the clamp 111, and the cylinder joint 113 is fixedly connected to the rail mounting plate 132; the workpiece positioning pin assembly 12 includes a positioning pin 121, a positioning pin fixing block 122, and an adjustment seat 123. The positioning pin 121 is fixedly connected to the positioning pin fixing block 122, the positioning pin fixing block 122 is fixedly connected to the adjustment seat 123, and the adjustment seat 123 is fixedly connected to the rail mounting plate 132. When the first cylinder body 112 controls the cylinder joint 113 to extend and retract, it simultaneously drives the rail mounting plate 132 to extend and retract. At this time, the workpiece positioning pin assembly 12 fixed on the rail mounting plate 132 also extends and retracts accordingly. When the positioning pin 121 is inserted into the workpiece positioning hole, the positions of the workpiece positioning hole and the bolt hole at the relative position are confirmed at this time, and the positioning is completed. The tightening gun sleeve descends to start the tightening work.

[0047] The cylinder-rail-slider linkage device 13 further includes a limiting member. The distance between the two limiting members is adjustable and is provided at the upper and lower ends of the rail mounting plate 132; the limiting member is an adjusting bolt 134, and threaded holes matching the adjusting bolt 134 are provided at the upper and lower ends of the rail mounting plate 132; the tightening gun clamp mounting assembly 11 further includes a limiting plate 115. The limiting plate 115 is fixedly connected to the clamp 111 and is located between the two adjusting bolts 134; when the first cylinder body 112 controls the cylinder joint 113 to extend and retract, it simultaneously drives the rail mounting plate 132 to extend and retract, and at the same time, the adjusting bolt 134 mounted on the rail mounting plate 132 and the limiting plate 115 mounted on the clamp 111 interact with each other, so as to achieve a limiting effect.

[0048] A connection port 133 is provided at the bottom of the slide rail mounting plate 132. The cylinder joint 113 is inserted into the connection port from the side for snap connection. This can fix both the slide rail mounting plate 132 and the cylinder joint 113, and at the same time facilitate the disassembly of both, which is convenient for maintenance. It can also release the degree of freedom in the bending direction of the cylinder rod, exempt the cylinder rod from bearing bending stress, and increase the service life of the cylinder.

[0049] The tightening gun clamp mounting assembly 11 further includes a cylinder mounting seat 114 for mounting the first cylinder body 112 and fixing it on the clamp 111.

[0050] Adjustment shims 124 are provided at the fixing part where the adjustment seat 123 is fixedly connected to the slide rail mounting plate 132. The number of adjustment shims 124 can be adjusted according to the actual hole pitch on site, so that the center of the tightening gun and the center of the workpiece hole are as coincident as possible, reducing the deviation to meet the use requirements, compensating for the systematic deviation existing in the processing and installation process, and then connecting and fixing the adjustment seat 123, the slide rail mounting plate 132 and the adjustment shims 124 through bolts.

[0051] As Figure 6 shown, the automatic floating adjustment device 2 includes a flange welding assembly 21 and an automatic floating assembly 23;

[0052] As Figure 6 and Figure 7 shown, the automatic floating assembly 23 includes a first-direction sliding group 231, a second-direction sliding group 232, a slide rail fixing plate 233 and a tightening gun fixing plate 234. The first-direction sliding group 231 is respectively slidably connected to the flange welding assembly 21 and the slide rail fixing plate 233. The second-direction sliding group 232 is respectively slidably connected to the slide rail fixing plate 233 and the tightening gun fixing plate 234. The projection of the moving direction of the first-direction sliding group 231 on the horizontal plane where the moving direction of the second-direction sliding group 232 is located intersects with the moving direction of the second-direction sliding group 232. In this embodiment, two fixing holes for fixing the tightening gun are provided at both ends of the tightening gun fixing plate 234, and two bolt tightening operations can be performed on the matching processing part 4 at the same time.

[0053] The first-direction sliding group 231 includes two groups of first slide rail sliders, and these two groups of first slide rail sliders are respectively installed on the flange welding assembly 21 and the slide rail fixing plate 233 along the same direction.

[0054] The second-direction sliding group 232 includes two groups of second slide rail sliders, and these two groups of second slide rail sliders are respectively installed on the slide rail fixing plate 233 and the tightening gun fixing plate 234.

[0055] The projection of the moving direction of the first-direction sliding group 231 on the horizontal plane where the moving direction of the second-direction sliding group 232 is located intersects the moving direction of the second-direction sliding group 232 at 90 degrees, which can maximize the in-plane displacement deviation compensation.

[0056] The first-direction sliding group 31 and the second-direction sliding group 32 are sliders, which are respectively matched with the corresponding slide rails to achieve sliding connection.

[0057] As Figure 14 shown, the flange welding assembly 21 is provided with a flange 211 fixedly connected to a robot or a robotic arm and a connecting seat 212 provided with connections to the floating positioning assembly 22 and the automatic floating device 23. When incorporated into an automated device, the flange and the connecting seat are connected by bolts, welded, or integrally formed.

[0058] The tightening gun fixing plate 23 is fixedly connected to the outer bearing seat of the tightening gun.

[0059] Embodiment 2, which is different from Embodiment 1, as Figures 8 - 10 shown, the automatic floating adjustment device 2 of this embodiment further includes a floating positioning assembly 22 fixedly connected to the flange welding assembly 21;

[0060] As Figure 13 shown, the tightening gun fixing plate 234 is provided with a locking limit seat 235; the floating positioning assembly 22 is inserted into or pulled out of the locking limit seat 235 through a telescopic structure, for locking the first-direction sliding group 231 and the second-direction sliding group 232 or unlocking the first-direction sliding group 231 and the second-direction sliding group 232. By adding a floating positioning assembly to the flange welding assembly and cooperating with the locking limit seat of the automatic floating assembly, the floating function can be turned on and off, thereby enabling control of the fixing and sliding of the first-direction sliding group and the second-direction sliding group of the automatic floating assembly.

[0061] As Figure 11 shown, the floating positioning assembly 22 includes a second cylinder body 221, a cylinder mounting seat 222, and a floating positioning lock pin 224; the cylinder mounting seat 222 is fixedly connected to the second cylinder body 221 and the flange welding assembly 21 respectively, the floating positioning lock pin 224 is connected to the telescopic member of the second cylinder body 221, and the vertical cross-section of the end of the floating positioning lock pin 224 is an inclined surface that is smaller at the bottom and larger at the top. Through the inclined surface on the floating positioning lock pin, it slowly guides back to the initial relative position of the tightening gun and the flange welding assembly 1, ensuring the uniqueness and stability of the overall fixture position in the non-tightening position.

[0062] As Figure 12 shown, the floating positioning assembly 22 further includes a cylinder joint 223, and the cylinder joint 213 is used to connect the cylinder output shaft and the floating positioning lock pin 224.

[0063] As Figure 13 shown, the locking and limiting seat 235 is provided in the middle of the tightening gun fixing plate 234, so as to realize that a positioning lock pin locks two degrees of freedom in two directions simultaneously.

[0064] The whole working process of the tightening gun fixture: After the frame and the workpiece are fed stably, at this time, the floating assembly of the tightening gun fixture is in the locked state. The tightening gun clamp moves to the claw-in position. At this time, the fixture moves vertically downward. When the workpiece positioning pin assembly enters the diagonal mounting hole, the floating assembly is unlocked. The workpiece positioning pin guides the tightening shaft and the bolt to accurately enter the other diagonal mounting hole. After descending to the place, tightening starts. After completing the tightening operation, it returns to the initial position to enter the tightening work of the next workpiece.

[0065] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and deformations can still be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.

Claims

1. A tightening gun fixture, characterized in that: include: A tightening gun positioning device (1), the tightening gun positioning device comprising a tightening gun clamp mounting assembly (11), a workpiece positioning pin assembly (12) and a cylinder slide rail slider linkage device (13); The tightening gun clamp mounting assembly (11) comprises a clamp (111), a first cylinder body (112) and a cylinder joint (113); the clamp (111) is fixed to the outside of the tightening gun, and the first cylinder body (112) is fixed to the side of the clamp (111); the cylinder slide rail slider linkage device (13) comprises a slide rail mounting plate (132) and a slide rail slider (131). The slide rail mounting plate (132) is provided with a slide rail, the slide rail slider (131) is slidably connected to the slide rail, the slide rail slider (131) is fixedly connected to the clamp (111), and the cylinder joint (113) is fixedly connected to the slide rail mounting plate (132); the workpiece positioning pin assembly (12) comprises a positioning pin (121), a positioning pin fixing block (122) and an adjustment seat (123), the positioning pin (121) is fixedly connected to the positioning pin fixing block (122), the positioning pin fixing block (122) is fixedly connected to the adjustment seat (123), and the adjustment seat (123) is fixedly connected to the slide rail mounting plate (132); An automatic floating adjustment device (2), the automatic floating adjustment device comprising a flange welding assembly (21) and an automatic floating assembly (23); The automatic floating assembly (23) comprises a first direction sliding group (231), a second direction sliding group (232), a slide rail fixing plate (233) and a tightening gun fixing plate (234); the first direction sliding group (231) is slidably connected to the flange welding assembly (21) and the slide rail fixing plate (233) respectively; the second direction sliding group (232) is slidably connected to the slide rail fixing plate (233) and the tightening gun fixing plate (234) respectively; the projection of the moving direction of the first direction sliding group (231) on the horizontal plane where the moving direction of the second direction sliding group (232) is located intersects with the moving direction of the second direction sliding group (232).

2. The tightening gun fixture according to claim 1, characterized in that: The cylinder slide rail slider linkage device (13) also includes a limit member, and the relative spacing between the two limit members is adjustable and arranged at the upper and lower ends of the slide rail mounting plate (132); the limit member is an adjustment bolt (134), and the upper and lower ends of the slide rail mounting plate (132) are provided with threaded holes that match the adjustment bolts.

3. The tightening gun fixture according to claim 2, characterized in that: The tightening gun clamp mounting assembly (11) further comprises a limit plate (115), wherein the limit plate (115) is fixedly connected to the clamp (111) and is located between the two adjustment bolts (134).

4. The tightening gun fixture according to claim 1, characterized in that: An adjustment gasket (124) is provided at a fixed portion where the adjustment seat (123) and the slide rail mounting plate (132) are fixedly connected.

5. The tightening gun fixture according to claim 1, characterized in that: The first direction sliding group (231) comprises two groups of first slide rail sliders, and the two groups of first slide rail sliders are respectively installed on the flange welding assembly (21) and the slide rail fixing plate (233) along the same direction; The second direction sliding group (232) comprises two groups of second slide rail sliders, and the two groups of second slide rail sliders are respectively mounted on the slide rail fixing plate (233) and the tightening gun fixing plate (234).

6. The tightening gun fixture according to claim 1, characterized in that: The projection of the moving direction of the first-direction sliding group (231) on the horizontal plane where the moving direction of the second-direction sliding group (232) is located intersects the moving direction of the second-direction sliding group (232) at 90 degrees.

7. The tightening gun fixture according to claim 1, characterized in that: The flange welding assembly (21) is fixedly connected to the robot or the mechanical arm; and the tightening gun fixing plate (234) is fixedly connected to the outer bearing seat of the tightening gun.

8. The tightening gun fixture according to claim 1, characterized in that: The automatic floating adjustment device (2) further comprises a floating positioning assembly (22) fixedly connected to the flange welding assembly (21); The tightening gun fixing plate (234) is provided with a locking limit seat (235); The floating positioning component (22) is inserted into or pulled out of the locking limit seat (235) through a telescopic structure, and is used to lock the first direction sliding group (231) and the second direction sliding group (232) or unlock the first direction sliding group (231) and the second direction sliding group (232).

9. The tightening gun fixture according to claim 8, characterized in that: The floating positioning assembly (22) comprises a second cylinder body (221), a cylinder mounting seat (222) and a floating positioning locking pin (224); The cylinder mounting seat (222) is respectively fixedly connected to the second cylinder body (221) and the flange welding assembly (21), and the floating positioning locking pin (224) is connected to the telescopic part of the second cylinder body (221).

10. The tightening gun fixture according to claim 9, characterized in that: The vertical cross-section of the end of the floating positioning locking pin (224) is an inclined surface that is smaller at the bottom and larger at the top.

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