Leaf spring seat welding piece testing fixture

Abstract

The utility model relates to a plate spring seat welding piece testing fixture, which is characterized in that a protruding piece is fixed on a base to serve as a main body, a groove is arranged in the middle of the main body, the inner contour of the groove corresponds to the outer contour of a plate spring seat welding piece standard piece, and four positioning blocks are fixed at the bottom of the groove corresponding to four positioning surfaces. A first bolt and a second bolt are arranged at the positions, corresponding to the first positioning hole and the second positioning hole, of the bottom of the groove, a right side face detection device is arranged on the right side of the main body and comprises a shaping block installed on the base, and the top of the shaping block is connected with a planar first detection block. Through holes are formed in the center position of the first detection block and the position corresponding to the shaping block, a detection pin enters and exits the through holes for detection, a support is arranged on the left side of the main body, a turnover mechanism is installed on the support, and a second detection block is installed on the turnover mechanism and attached to the arc-shaped face of the plate spring seat welding piece. And the detection accuracy and the detection efficiency can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of automobile manufacturing technology, and in particular to a tooling for inspecting leaf spring seat welded parts. Background Technology

[0002] The leaf spring seat welded assembly is a complex workpiece. The four corners of its bottom surface have four local planes that can serve as positioning surfaces. The bottom surface also has two through holes of different sizes, which can be used as the first and second positioning holes respectively. The front and rear sides of the leaf spring seat welded assembly are smooth, with two arc-shaped notches that need to be inspected to check the arc surface contours. The right side of the leaf spring seat welded assembly has a lug with mounting holes, and it is necessary to check whether the mounting holes and the tilt angle of the lug meet the requirements. The types and quantities of measurements required are numerous. It is time-consuming and laborious for an individual to directly inspect the leaf spring seat welded assembly, and accurate judgment is impossible, resulting in poor product quality control. Summary of the Invention

[0003] The purpose of this invention is to provide a multi-directional inspection tool for leaf spring seat welded parts, which aims to solve the problems of low inspection efficiency and low accuracy when inspecting leaf spring seat welded parts.

[0004] The technical solution adopted by this utility model is as follows: a leaf spring seat welding assembly inspection fixture, including a base, a protrusion fixed on the base as the main body, a groove in the middle of the main body, the inner contour of the groove corresponding to the outer contour of the leaf spring seat welding assembly standard part, four positioning blocks fixed at the bottom of the groove corresponding to the positions of the four positioning surfaces, a first pin hole and a second pin hole opened at the bottom of the groove corresponding to the positions of the first positioning hole and the second positioning hole, and corresponding first pins and second pins inserted into the first pin holes and the second pin holes, respectively. A right side inspection device is located on the right side of the main body, the right side inspection device including a component mounted on the base. The main body has a shaping block with a flat first detection block connected to its top. The center of the first detection block and the corresponding position of the shaping block have through holes. The detection pin moves in and out of the through holes for detection. There is a support on the left side of the main body, and a flipping mechanism is installed on the support. A fork is installed on the flipping mechanism. The fork has two mounting rods facing the upper part of the two arc-shaped surfaces of the leaf spring seat welded part. Each of the two mounting rods has an arc-shaped second detection block installed below it. The second detection block fits against the arc-shaped surface of the leaf spring seat welded part. It also includes a double-ended go / no-go gauge with one end of φ2.5mm and the other end of φ3.5mm, as well as a flush gauge.

[0005] A further technical solution of this utility model is as follows: The flipping mechanism includes a mounting base with a through groove at the top, which is installed on the top of a support. Screw holes are opened at the bottom of the through groove and at corresponding positions on the support. A screw passes through the screw holes to lock the support and the mounting base. A rotating shaft is installed by drilling holes on both sides of the through groove. The rotating shaft passes through the end of a rotating arm, causing the rotating arm to rotate around the rotating shaft. A limiting block or limiting pin is installed on the left side of the through groove to limit the maximum open position of the rotating arm to a vertical state. A limiting block or limiting pin is installed on the right side of the through groove to limit the maximum closed position of the rotating arm to a parallel state. A fork head is installed at the front end of the rotating arm using a screw locking process or a welding process. When the rotating arm is closed, the second detection block is in contact with the arc-shaped surface of the leaf spring seat welded part.

[0006] The beneficial effects of this utility model are: by adopting the above technical solution, the leaf spring seat welded part inspection tool can detect the corresponding surface clearance, hole position, hole shape and arc surface condition, thereby quickly determining whether the inspected leaf spring seat welded part is a qualified product, which can effectively improve the inspection accuracy and inspection efficiency. Attached Figure Description

[0007] Figure 1 This is a top view of the inspection fixture for the leaf spring seat welded assembly described in this utility model;

[0008] Figure 2 This is a front view structural schematic diagram of a leaf spring seat welding assembly inspection fixture according to the present utility model;

[0009] Figure 3 This is a schematic diagram of the structure of a leaf spring seat welded assembly according to the present invention. Detailed Implementation

[0010] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0011] Example:

[0012] like Figure 3 The leaf spring seat welded assembly shown has four local planes at the four corners of its bottom surface that can serve as positioning surfaces 1. The bottom surface also has two through holes of different sizes that can serve as the first positioning hole 2 and the second positioning hole 3, respectively. The front and rear sides of the leaf spring seat welded assembly are smooth, and each side has two arc-shaped notches; the contours of these arc-shaped surfaces need to be inspected. The right side of the leaf spring seat welded assembly has a lug with a mounting hole 4; the mounting hole and the angle of the lug need to be inspected to ensure they meet the requirements. Internally, reinforcing ribs are welded in. These reinforcing ribs themselves do not affect installation or use and therefore do not need to be inspected. The above inspection already covers the inspection of any issues caused by the welding of the reinforcing ribs.

[0013] like Figure 1 and 2The illustrated inspection fixture for a leaf spring seat welded assembly includes a base, on which a protrusion 16 is fixed as the main body. The main body 2 has a groove in the middle, the inner contour of which corresponds to the outer contour of the leaf spring seat welded assembly standard part. Four positioning blocks 5 are fixed at the bottom of the groove corresponding to the positions of four positioning surfaces 1. A first pin hole and a second pin hole are opened at the bottom of the groove corresponding to the positions of the first positioning hole 2 and the second positioning hole 3. A first pin 6 and a second pin 7 are inserted into the first pin hole and the second pin hole, respectively. A right-side inspection device is located on the right side of the main body. The right-side inspection device includes a shaping block 8 mounted on the base, with the top of the shaping block connected to… A first detection block 9 with a flat surface is provided. Through holes are opened at the center of the first detection block 9 and at the corresponding position of the shaping block 8. A detection pin 10 enters and exits the through holes for detection. A support 15 is located on the left side of the main body. A flipping mechanism 14 is installed on the support 15, and a fork 13 is installed on the flipping mechanism. The fork 13 has two mounting rods facing the upper part of the two arc-shaped surfaces of the leaf spring seat welded part. An arc-shaped second detection block 12 is installed under each of the two mounting rods. The second detection block 12 fits against the arc-shaped surface of the leaf spring seat welded part. It also includes a double-ended go / no-go gauge 17 with one end φ2.5mm and the other end φ3.5mm, and a flush gauge 11. A go / no-go gauge seat is fixed on the base, and the go / no-go gauge seat includes a silicone groove in the middle. A flush gauge seat is fixed on the base, and the flush gauge seat includes a silicone groove. A detection pin seat is fixed on the base, and the flush gauge seat includes a silicone groove.

[0014] The flipping mechanism includes a mounting base with a through slot at the top, which is installed on top of a support. Screw holes are located at the bottom of the through slot and at corresponding positions on the support. A screw passes through these screw holes to lock the support and mounting base in place. A rotating shaft is installed through holes on both sides of the through slot, passing through the end of a rotating arm to allow the arm to rotate around the shaft. A limiting block or pin is installed on the left side of the through slot to restrict the maximum open position of the rotating arm to a vertical state. A limiting block or pin is installed on the right side of the through slot to restrict the maximum closed position of the rotating arm to a parallel state. A fork head is installed at the front end of the rotating arm using a screw locking process or welding. When the rotating arm is closed, the second detection block 12 is in contact with the arc-shaped surface of the leaf spring seat welded joint.

[0015] All components on the base can be fixed with bolts for easy replacement. When the gauge is no longer in use, the base can also be recycled and used for other gauges.

[0016] The base can be made small enough to accommodate only the main body, the go / no-go gauge seat, and the flush gauge seat. This design is for easy portability. Therefore, the base has fixing holes and slots. Once in place, it can be fixed to the workbench using the fixing holes and slots.

[0017] The base also features a nameplate and reference coordinates, which are standard design elements and will not be elaborated upon further.

[0018] Working principle: Using positioning surface 1 as the reference surface, the leaf spring seat welded assembly is placed onto positioning block 5. After placing the leaf spring seat welded assembly, the first pin 6 and the second pin 7 are inserted sequentially for double-point locking. Successful insertion of both pins simultaneously indicates a pass; failure to insert indicates an error in the positioning hole position or size. The flipping mechanism 14 is then closed, and the arc-shaped surface of the second detection block 12 and the leaf spring seat welded assembly is observed for fit. No obvious gap indicates a pass; a visible gap indicates a fail. The mounting hole is inspected using detection pin 10; a smooth fit indicates a pass. The mounting holes are considered acceptable if they allow the material to pass through. Next, check if there is a noticeable gap between the first inspection block 9 and the mounting ear. If there is no gap, it is acceptable. If there is a gap but the situation is unclear, insert one end of a go / no-go gauge (φ2.5). If it can pass through the gap, it is unacceptable; otherwise, it is acceptable. Use a double-ended go / no-go gauge (17) to check the clearance between the peripheral surfaces of both sides and the space. If one end of the go / no-go gauge passes through the φ3.5 gauge but the other end cannot, it is acceptable; similarly, otherwise, it is unacceptable. Use a ±0.5mm tolerance flush gauge (11) to check the corresponding cut edges. A clearance within ±0.5mm from the space is acceptable. During the inspection process, all parts must not be forcibly pressed in to avoid damage and human error.

[0019] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tooling for inspecting welded leaf spring seats, characterized in that: The system includes a base, on which a protrusion is fixed as the main body. The main body has a groove in the middle, the inner contour of which corresponds to the outer contour of the standard part of the leaf spring seat welded assembly. Four positioning blocks are fixed at the bottom of the groove corresponding to the four positioning surfaces. A first pin hole and a second pin hole are formed at the bottom of the groove corresponding to the first and second positioning holes, and corresponding first and second pins are inserted into these holes. A right-side detection device is located on the right side of the main body. This right-side detection device includes a shaping block mounted on the base, with its top connected to… The device includes a flat first inspection block with through holes at its center and corresponding to the shaping block. Inspection pins move in and out of these through holes for inspection. A support is located on the left side of the main body, and a flipping mechanism is mounted on the support. A fork is mounted on the flipping mechanism, and the fork has two mounting rods facing the upper part of the two arc-shaped surfaces of the leaf spring seat welded part. Each of the two mounting rods has an arc-shaped second inspection block mounted below it. The second inspection blocks fit snugly against the arc-shaped surfaces of the leaf spring seat welded part. The device also includes a double-ended go / no-go gauge with one end φ2.5mm and the other φ3.5mm, and a flush gauge.

2. The inspection fixture for the welded assembly of a leaf spring seat according to claim 1, characterized in that: The flipping mechanism includes a mounting base with a through slot at the top, which is installed on the top of a support. Screw holes are located at the bottom of the through slot and at corresponding positions on the support. A screw passes through the screw holes to lock the support and mounting base in place. A rotating shaft is installed through holes on both sides of the through slot, passing through the end of a rotating arm to allow the rotating arm to rotate around the shaft. A limiting block or pin is installed on the left side of the through slot to restrict the maximum open position of the rotating arm to a vertical state. A limiting block or pin is installed on the right side of the through slot to restrict the maximum closed position of the rotating arm to a parallel state. A fork head is installed at the front end of the rotating arm using a screw locking process or welding. When the rotating arm is closed, the second detection block is in contact with the arc-shaped surface of the leaf spring seat welded joint.

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