Novel projection welding stud testing fixture
By designing a new convex welding stud detector including an L-type positioning device and a torque wrench, the problems of inaccurate and high cost of existing inspection tools are solved, and accurate detection and low torque of convex welding studs are achieved. Cost production.
Patent Information
- Application Number
- CN202422988809.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-12-05
AI Technical Summary
The existing convex welding stud torque detection tools affect the accuracy of the detection results due to the differences in shape and size, and the equipment investment and maintenance costs are high, and the operation is complex, which increases labor costs.
A new type of convex welding stud detection tool is designed, including an L-shaped integrated positioning device and a torque wrench. Through the combination of the bolt positioning structure and the torque wrench positioning structure, the accurate positioning and torque detection of convex welding studs are achieved.
The accuracy of torque detection of convex welding studs with a diameter of 12mm at the bottom bolt is achieved, which reduces equipment and labor costs, simplifies operation and maintenance, and improves production efficiency.
Smart Images
Figure CN222461023U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of projection welding stud detection, in particular to a novel projection welding stud detection tool. Background Art
[0002] With the gradual development of the automobile industry, the manufacturing industry of various types of automobiles has made great progress. The progress of production technology has greatly increased the number of vehicles while also greatly improving the quality. In vehicle manufacturing technology, the most core technical process is the welding process of the body in white. Standard parts include welding screws, welding nuts and welding studs. Although their cost is relatively low, they play an important role in improving the safety performance of vehicles and the overlap relationship of various vehicle components. Therefore, it is very necessary to detect the projection welding studs in vehicle manufacturing.
[0003] Projection welding studs with a bottom bolt diameter of 12mm are the most widely used in automobile production, so the torque detection of this type of projection welding studs is an important indicator of projection welding stud detection. The existing projection welding stud torque detection tools, due to the differences in shape and size of the projection welding studs, will affect the accuracy of the detection results, and the detection process also takes a long time, affecting production efficiency; secondly, the existing projection welding stud torque detection tools usually require high equipment investment and maintenance costs, which is a considerable burden for small and medium-sized enterprises; in addition, a considerable number of projection welding stud torque detection tools are relatively complicated to operate, requiring professional technicians to operate and maintain, increasing labor costs. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide a novel projection welding stud inspection tool which has the advantages of simple structure, convenient use and maintenance, low cost and relatively accurate torque results of projection welding studs with a bottom bolt diameter of 12mm.
[0005] In order to solve the above technical problems, the technical solution of the utility model is as follows: a new type of projection welding stud inspection fixture, including a positioning device and a torque wrench, the positioning device is an L-shaped integrated structure, the positioning device includes a bolt positioning structure and a torque wrench positioning structure, the bolt positioning structure has a bolt insertion port, the bolt insertion port is a clamp-type structure, the size of the jaws matches the bolt model of the projection welding stud to be inspected, the distance from the jaws to the vertical part of the positioning device is 40 mm to 50 mm, and the thickness of the horizontal part of the positioning device is 3 mm to 5 mm.
[0006] Preferably, the length from the jaws to the vertical portion of the positioning device is 45 mm.
[0007] Preferably, the thickness of the horizontal portion of the positioning device is 3 mm.
[0008] The vertical part of the positioning device is a torque wrench positioning structure, which is a rectangular structure. A torque wrench socket is provided at the center of the upper surface of the rectangular structure. The torque wrench socket is in the shape of a rectangular parallelepiped. The sides of the torque wrench socket are respectively parallel to the sides of the vertical part of the positioning device. The metal thickness around the torque wrench socket is between 3 mm and 5 mm. The vertical part of the torque wrench positioning structure is provided with a locking opening that runs through the front and back. The locking opening also passes through the torque wrench socket. The locking opening is circular and can clamp the ball bearing on the torque wrench described below, thereby preventing the torque wrench from falling and increasing the service life of the torque wrench.
[0009] The upper surface of the position where the bolt positioning structure and the torque wrench positioning structure are combined is made into an arc shape to increase the stability and safety of the inspection fixture.
[0010] The torque wrench has a rectangular plug, which is fixedly connected below the end away from the gripping end of the torque wrench. The rectangular plug matches the socket of the torque wrench, and there is an identical hole on each side of the rectangular plug corresponding to the locking port. The central axis of each hole coincides with the central axis of the locking port. A spring is installed in each hole, and the outer end of the spring contacts a steel ball. The hole clamps the ball, and the ball is partially exposed outside the hole under the elastic force of the spring toward the outside of the hole. When the pressure on the ball is greater than the elastic force of the spring, the spring will completely enter the above-mentioned hole.
[0011] During the test, the bolts of the projection weld stud to be tested are fixed by the bolt positioning structure, and then the rectangular plug is inserted into the torque wrench socket. When inserted, the balls all enter the hole under the action of the extrusion force. When the hole reaches the position of the locking port, the balls are clamped into the locking port under the action of the spring elastic force, so that the torque wrench is fixed on the torque wrench socket. Applying a set standard force to the torque wrench to twist it can detect whether the torque of the projection weld stud to be tested is qualified. If the torque of the projection weld stud to be tested is qualified, it will not twist; if the projection weld stud to be tested is twisted, the torque of the projection weld stud to be tested is unqualified.
[0012] Through the above design scheme, the utility model can bring the following beneficial effects: the utility model is simple and convenient to manufacture, has low manufacturing cost, can be mass-produced, has good detection effect, is widely used, and is easy to keep and carry. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments:
[0014] Figure 1 The utility model is a schematic diagram of a positioning device of a new type of projection welding stud inspection fixture.
[0015] Figure 2 The utility model is a schematic diagram of a torque wrench of a new type of projection welding stud inspection fixture.
[0016] In the figure, 1-bolt insertion port, 2-torque wrench socket, 3-locking port, 4-rectangular plug, 5-ball, 6-torque wrench. DETAILED DESCRIPTION
[0017] Example 1
[0018] A novel projection welding stud inspection fixture comprises a positioning device and a torque wrench 6. The positioning device is an L-shaped integrated structure. The positioning device comprises a bolt positioning structure and a torque wrench positioning structure. The bolt positioning structure has a bolt insertion opening 1. The bolt insertion opening 1 is a clamp-type structure. The size of the clamp matches the bolt model of the projection welding stud to be inspected. The distance from the clamp to the vertical part of the positioning device is 40 mm. The thickness of the horizontal part of the positioning device is 3 mm.
[0019] The vertical part of the positioning device is a torque wrench positioning structure, which is a rectangular structure. A torque wrench socket 2 is provided at the center of the upper surface of the rectangular structure. The torque wrench socket 2 is in the shape of a rectangular parallelepiped. The sides of the torque wrench socket 2 are respectively parallel to the sides of the vertical part of the positioning device. The metal thickness around the torque wrench socket 2 is 3 mm. The vertical part of the torque wrench positioning structure is provided with a locking opening 3 that runs through the front and back. The locking opening 3 also passes through the torque wrench socket 2. The locking opening 3 is circular. The locking opening 3 can clamp the ball 5 on the torque wrench 6 described below, thereby preventing the torque wrench 6 from falling off, so as to increase the service life of the torque wrench 6.
[0020] The upper surface of the position where the bolt positioning structure and the torque wrench positioning structure are combined is made into an arc shape to increase the stability and safety of the inspection fixture.
[0021] The torque wrench 6 has a rectangular plug 4, which is fixedly connected below the end away from the gripping end of the torque wrench 6. The rectangular plug 4 matches the torque wrench socket 2, and there is an identical hole on each side of the rectangular plug 4 corresponding to the locking port 3. The central axis of each hole coincides with the central axis of the locking port 3. A spring is installed in each hole, and the outer end of the spring contacts a steel ball. The hole clamps the ball 5, and the ball 5 is partially exposed outside the hole under the elastic force of the spring toward the outside of the hole. When the pressure on the ball 5 is greater than the elastic force of the spring, the spring will enter the above-mentioned hole completely.
[0022] During the inspection, the bolts of the projection welding stud to be inspected are fixed by the bolt positioning structure, and then the rectangular plug 4 is inserted into the torque wrench socket 2. When inserted, under the action of the extrusion force, the ball 5 enters the hole completely. When the hole reaches the position of the locking port 3, under the action of the spring elastic force, the ball 5 is clamped into the locking port 3, so that the torque wrench 6 is fixed on the torque wrench socket 2. Applying a set standard force to the torque wrench 6 to twist it can detect whether the torque of the projection welding stud to be inspected is qualified. If the torque of the projection welding stud to be inspected is qualified, it will not twist; if the projection welding stud to be inspected is twisted, the torque of the projection welding stud to be inspected is unqualified. Example
[0023] A novel projection welding stud inspection fixture comprises a positioning device and a torque wrench 6. The positioning device is an L-shaped integrated structure. The positioning device comprises a bolt positioning structure and a torque wrench positioning structure. The bolt positioning structure has a bolt insertion opening 1. The bolt insertion opening 1 is a clamp-type structure. The size of the clamp matches the bolt model of the projection welding stud to be inspected. The distance from the clamp to the vertical part of the positioning device is 50 mm. The thickness of the horizontal part of the positioning device is 5 mm.
[0024] The vertical part of the positioning device is a torque wrench positioning structure, which is a rectangular structure. A torque wrench socket 2 is provided at the center of the upper surface of the rectangular structure. The torque wrench socket 2 is in the shape of a rectangular parallelepiped. The sides of the torque wrench socket 2 are respectively parallel to the sides of the vertical part of the positioning device. The metal thickness around the torque wrench socket 2 is 5 mm. The vertical part of the torque wrench positioning structure is provided with a locking opening 3 that runs through the front and back. The locking opening 3 also passes through the torque wrench socket 2. The locking opening 3 is circular. The locking opening 3 can clamp the ball 5 on the torque wrench 6 described below, thereby preventing the torque wrench 6 from falling off, so as to increase the service life of the torque wrench 6.
[0025] The upper surface of the position where the bolt positioning structure and the torque wrench positioning structure are combined is made into an arc shape to increase the stability and safety of the inspection fixture.
[0026] The torque wrench 6 has a rectangular plug 4, which is fixedly connected below the end away from the gripping end of the torque wrench 6. The rectangular plug 4 matches the torque wrench socket 2, and there is an identical hole on each side of the rectangular plug 4 corresponding to the locking port 3. The central axis of each hole coincides with the central axis of the locking port 3. A spring is installed in each hole, and the outer end of the spring contacts a steel ball. The hole clamps the ball 5, and the ball 5 is partially exposed outside the hole under the elastic force of the spring toward the outside of the hole. When the pressure on the ball 5 is greater than the elastic force of the spring, the spring will enter the above-mentioned hole completely.
[0027] During the inspection, the bolts of the projection welding stud to be inspected are fixed by the bolt positioning structure, and then the rectangular plug 4 is inserted into the torque wrench socket 2. When inserted, under the action of the extrusion force, the ball 5 enters the hole completely. When the hole reaches the position of the locking port 3, under the action of the spring elastic force, the ball 5 is clamped into the locking port 3, so that the torque wrench 6 is fixed on the torque wrench socket 2. Applying a set standard force to the torque wrench 6 to twist it can detect whether the torque of the projection welding stud to be inspected is qualified. If the torque of the projection welding stud to be inspected is qualified, it will not twist; if the projection welding stud to be inspected is twisted, the torque of the projection welding stud to be inspected is unqualified. Example
[0028] A novel projection welding stud inspection fixture comprises a positioning device and a torque wrench 6. The positioning device is an L-shaped integrated structure. The positioning device comprises a bolt positioning structure and a torque wrench positioning structure. The bolt positioning structure has a bolt insertion opening 1. The bolt insertion opening 1 is a clamp-type structure. The size of the clamp matches the bolt model of the projection welding stud to be inspected. The distance from the clamp to the vertical part of the positioning device is 45 mm. The thickness of the horizontal part of the positioning device is 3 mm.
[0029] The vertical part of the positioning device is a torque wrench positioning structure, which is a rectangular structure. A torque wrench socket 2 is provided at the center of the upper surface of the rectangular structure. The torque wrench socket 2 is in the shape of a rectangular parallelepiped. The sides of the torque wrench socket 2 are respectively parallel to the sides of the vertical part of the positioning device. The metal thickness around the torque wrench socket 2 is 3 mm. The vertical part of the torque wrench positioning structure is provided with a locking opening 3 that runs through the front and back. The locking opening 3 also passes through the torque wrench socket 2. The locking opening 3 is circular. The locking opening 3 can clamp the ball 5 on the torque wrench 6 described below, thereby preventing the torque wrench 6 from falling off, so as to increase the service life of the torque wrench 6.
[0030] The upper surface of the position where the bolt positioning structure and the torque wrench positioning structure are combined is made into an arc shape to increase the stability and safety of the inspection fixture.
[0031] The torque wrench 6 has a rectangular plug 4, which is fixedly connected below the end away from the gripping end of the torque wrench 6. The rectangular plug 4 matches the torque wrench socket 2, and there is an identical hole on each side of the rectangular plug 4 corresponding to the locking port 3. The central axis of each hole coincides with the central axis of the locking port 3. A spring is installed in each hole, and the outer end of the spring contacts a steel ball. The hole clamps the ball 5, and the ball 5 is partially exposed outside the hole under the elastic force of the spring toward the outside of the hole. When the pressure on the ball 5 is greater than the elastic force of the spring, the spring will enter the above-mentioned hole completely.
[0032] During the inspection, the bolts of the projection welding stud to be inspected are fixed by the bolt positioning structure, and then the rectangular plug 4 is inserted into the torque wrench socket 2. When inserted, under the action of the extrusion force, the ball 5 enters the hole completely. When the hole reaches the position of the locking port 3, under the action of the spring elastic force, the ball 5 is clamped into the locking port 3, so that the torque wrench 6 is fixed on the torque wrench socket 2. Applying a set standard force to the torque wrench 6 to twist it can detect whether the torque of the projection welding stud to be inspected is qualified. If the torque of the projection welding stud to be inspected is qualified, it will not twist; if the projection welding stud to be inspected is twisted, the torque of the projection welding stud to be inspected is unqualified.
Claims
1. A novel projection welding stud inspection tool, comprising a positioning device and a torque wrench (6), characterized in that The positioning device is an L-shaped integrated structure, comprising a bolt positioning structure and a torque wrench positioning structure, the bolt positioning structure having a bolt insertion opening (1), the bolt insertion opening (1) being a clamp-type structure, the size of the clamp matching the bolt model of the projection welding stud to be detected; The vertical part of the positioning device is a torque wrench positioning structure, which is a rectangular parallelepiped structure. A torque wrench socket (2) is provided at the center of the upper surface of the rectangular parallelepiped structure. The torque wrench socket (2) is in the shape of a rectangular parallelepiped. Each side of the torque wrench socket (2) is parallel to each side of the vertical part of the positioning device. A locking opening (3) is provided in the vertical part of the torque wrench positioning structure, which passes through the front and back. The locking opening (3) also passes through the torque wrench socket (2). The locking opening (3) is circular and can clamp the ball (5) on the torque wrench (6) described below. The torque wrench (6) has a rectangular plug (4) which is fixedly connected below the end away from the gripping end of the torque wrench (6). The rectangular plug (4) matches the torque wrench socket (2), and there is an identical hole on each side of the rectangular plug (4) corresponding to the locking opening (3). The central axis of each hole coincides with the central axis of the locking opening (3). A spring is installed in each hole, and the outer end of the spring contacts a steel ball. The hole clamps the ball (5), and the ball (5) is partially exposed outside the hole under the elastic force of the spring in the direction out of the hole. When the pressure on the ball (5) is greater than the elastic force of the spring, the spring enters the hole completely.
2. A new type of projection welding stud inspection fixture according to claim 1, characterized in that The distance between the jaws of the bolt insertion opening (1) of the bolt positioning structure and the vertical portion of the positioning device is 40 mm to 50 mm.
3. A new type of projection welding stud inspection fixture according to claim 1, characterized in that :The thickness of the horizontal part of the positioning device is 3 mm to 5 mm.
4. A new type of projection welding stud inspection fixture according to claim 1, characterized in that The metal thickness around the torque wrench socket (2) is between 3 mm and 5 mm.