Welding fixture adjusting mechanism

Abstract

The utility model discloses a welding fixture adjusting mechanism which is characterized by comprising a fixing plate and an adjusting plate. The fixing plate is in an L shape, a connecting hole is vertically formed in the fixing plate, and a first groove hole and a second groove hole are horizontally formed in the fixing plate. A locking hole and a positioning hole are vertically formed in the adjusting plate, and a threaded hole is horizontally formed in the adjusting plate; the height adjusting shim is arranged below the adjusting plate; and the adjusting shim is arranged between the fixing plate and the adjusting plate. The welding fixture is simple in structure, reasonable in design and accurate in positioning, the workpiece positioning and clamping mechanism can meet the position requirement of the relative size by increasing and reducing the number of adjusting gaskets and height adjusting gaskets in the adjusting mechanism, operation is convenient and fast, the design time of the welding fixture is saved, and the machining and manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model relates to a welding fixture adjustment mechanism and belongs to the technical field of processing and manufacturing welding fixtures for automobile parts. Background Art

[0002] Welding is a method of permanently combining workpieces by heating or pressurizing, or both, with or without filler materials. When two or more workpieces are welded together, there are usually relative position and size requirements. After several or more rounds of debugging, the debugging process is to adjust the relative position of the welding fixture positioning mechanism in the three directions of XYZ to a fixed value, and finally meet the relative position and size requirements of each workpiece. Due to structural limitations, different mechanisms have different adjustment positions for the fixtures, and the corresponding adjustment gasket models and specifications are different. It is necessary to process gaskets of various specifications, which increases the manufacturing cost. At the same time, it is time-consuming and laborious to find gaskets during adjustment, which affects the overall progress. Utility Model Content

[0003] The utility model aims to provide a welding fixture adjustment mechanism. As a universal mechanism, a positioning and clamping mechanism for positioning or clamping a workpiece is connected on the mounting and fixing surface of an adjustment plate by welding or interference fit. The adjustment of the overall mechanism is realized on the universal mechanism. By increasing or decreasing the thickness of the adjustment gasket, the relative position adjustment of the fixture positioning and clamping mechanism in three directions of XYZ is realized, and the types of gasket specifications are reduced and the time for selecting gaskets is saved, thereby reducing processing costs and shortening fixture adjustment time.

[0004] The technical solution adopted by the utility model is: a welding fixture adjustment mechanism, characterized in that: it includes a fixed plate and an adjustment plate; the fixed plate is L-shaped, and a connecting hole is vertically arranged on the fixed plate and a first slot hole and a second slot hole are horizontally arranged; a locking hole and a positioning hole are vertically arranged on the adjustment plate and a threaded hole is horizontally arranged; it also includes a height adjustment gasket arranged under the adjustment plate and an adjustment gasket arranged between the fixed plate and the adjustment plate.

[0005] Furthermore: the locking bolt passes through the first slot hole and the second slot hole and is threadedly matched with the threaded hole; the first slot hole and the second slot hole are stepped holes, which are respectively matched with the main body and the head of the locking bolt.

[0006] Further: there are four locking holes, which are arranged at the corners of the adjustment plate, and flat washers are arranged on the upper parts of the locking holes.

[0007] Further: the height adjustment gasket is M-shaped and is provided with a second avoidance groove corresponding to the positioning hole.

[0008] Further: the adjusting gasket is provided with a first avoidance groove matching with the threaded hole.

[0009] Furthermore: the positioning hole cooperates with the positioning mechanism.

[0010] Furthermore: the lower part of the positioning mechanism is interference-fitted with the positioning hole, and the upper part is matched with the positioning hole or the positioning surface of the workpiece.

[0011] The advantages and positive effects of the utility model are as follows: since the L-shaped fixing plate adopted by the utility model is locked and fixed on the fixture base plate through three bolt connection holes and two fixing pin holes, the first slot hole and the second slot hole on the L-shaped fixing plate are connected with the threaded hole on the adjustment plate through bolts, and adjustment gaskets of different specifications are installed in the middle, and height adjustment gaskets of different specifications are installed at the lower end of the adjustment plate. The bolts fix the adjustment plate to the base plate through flat washers and bolt locking holes, and the installation positioning holes on the adjustment plate are used for the precise installation of the positioning clamping mechanism. The scheme has a simple structure, reasonable design, and accurate positioning. The workpiece positioning clamping mechanism can meet the position requirements of the relative size by increasing or decreasing the adjustment gaskets and height adjustment gaskets in the adjustment mechanism. The operation is convenient and quick, saving the design time of the welding fixture and reducing the processing and manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings.

[0013] Figure 1 It is a structural schematic diagram of the utility model;

[0014] Figure 2 yes Figure 1 Structural diagram of the middle adjustment plate;

[0015] Figure 3 yes Figure 1 Schematic diagram of the structure of the middle L-shaped fixed plate;

[0016] Figure 4 yes Figure 1 The structural diagram of the adjusting gasket;

[0017] Figure 5 yes Figure 1 Schematic diagram of the structure of the mid-height adjustment gasket;

[0018] Figure 6 It is a schematic diagram of the use state of the structure of the utility model.

[0019] Explanation of the serial numbers in the figure: 1 L-shaped fixing plate, 2 adjusting gasket, 3 flat washer, 4 adjusting plate, 5 height adjusting gasket, 6 connecting hole, 7 pin hole, 8 first slot hole, 9 second slot hole, 10 positioning hole, 11 mounting fixing surface, 12 locking hole, 13 threaded hole, 14 first avoidance groove, 15 second avoidance groove, 16 clamping mechanism, 17 welding fixture adjustment mechanism, 18 first positioning mechanism, 19 second positioning mechanism. DETAILED DESCRIPTION

[0020] according to Figures 1 to 6 The specific structure of the utility model is described in detail. A welding fixture adjustment mechanism includes a fixed plate 1 and an adjustment plate 4; the fixed plate 1 is L-shaped, and the inner side surface is matched with the two sides of the adjustment plate respectively, and a connecting hole 6 is vertically arranged on the fixed plate 1 and a first slot hole 8 and a second slot hole 9 are horizontally arranged; a locking hole 12 and a positioning hole 10 are vertically arranged on the adjustment plate 4, and a threaded hole 13 is horizontally arranged; and it also includes a height adjustment gasket 5 arranged below the adjustment plate 4 and an adjustment gasket 2 arranged between the fixed plate 1 and the adjustment plate 4.

[0021] Preferably, the locking bolt passes through the first slotted hole 8 and the second slotted hole 9 and is threadedly matched with the threaded hole 13; the first slotted hole 8 and the second slotted hole 9 are stepped holes, respectively matched with the body and the head of the locking bolt. The first slotted hole 8 and the second slotted hole 9 are long holes, and the width of the first slotted hole is greater than the diameter of the body of the locking bolt, ensuring good matching and tightening when adding an adjustment gasket.

[0022] Preferably, there are four locking holes 12 , which are arranged at the corners of the adjustment plate 4 , and a flat washer 3 is arranged on the upper part of the locking holes 12 .

[0023] Preferably, the height adjustment gasket 5 is M-shaped and is provided with a second avoidance groove 15 corresponding to the positioning hole 10 .

[0024] Preferably, the adjusting gasket 2 is provided with a first avoidance groove 14 matched with the threaded hole 13 .

[0025] Preferably, the positioning hole 10 cooperates with the positioning mechanism.

[0026] Preferably, the lower part of the positioning mechanism is interference-fitted with the positioning hole 10 , and the upper part is matched with the positioning hole or the positioning surface of the workpiece.

[0027] Preferably, there are multiple threaded holes, which are distributed at different heights and correspond to the first slot hole and the second slot hole, further ensuring good fit and tightening when adding adjustment gaskets.

[0028] The present invention is further described below by way of examples. Example

[0029] A welding fixture adjustment mechanism comprises an L-shaped fixing plate 1, an adjustment gasket 2, a flat washer 3, an adjustment plate 4 and a height adjustment gasket 5. The fixing plate 1 is locked and fixed on the fixture base plate through three connecting holes 6 and two pin holes 7. A first slot hole 8 and a second slot hole 9 for screwing and locking the adjustment plate 4 are provided in the middle position of both sides of the fixing plate 1. The threaded portion of the bolt passes through the first slot hole 8 and the end is countersunk in the second slot hole 9, which saves space and prevents the entry of impurities such as welding spatter from affecting the locking and loosening of the bolt. The upper and lower end surfaces and the inner side surface of the fixing plate 1 are finely processed to ensure smoothness and flatness, thereby improving the accuracy of the adjustment mechanism.

[0030] The upper mounting surface 11 of the adjustment plate 4 is provided with four sets of locking holes 12 for locking the adjustment plate 4 and positioning holes 10 for accurately installing the positioning clamping mechanism. The positioning holes 10 are connected to the positioning clamping mechanism by interference fit and are close to the mounting surface 11. A threaded hole 13 with a depth of 15-20 mm is provided in the middle of the two adjacent side surfaces of the adjustment plate 4. The upper and lower end surfaces and outer side surfaces of the adjustment plate 4 are finely processed.

[0031] Adjustment gaskets 2 of different thicknesses are installed between the fixed plate 1 and the adjustment plate 4. The distance between the adjustment plate 4 and the fixed plate 1 is achieved by increasing or decreasing the adjustment gaskets 2, thereby ensuring the position size of the positioning clamping mechanism. A first avoidance groove 14 for avoiding the locking bolt is opened in the middle position of the adjustment gasket 2. There are multiple adjustment gaskets with thicknesses of 0.1mm, 0.2mm, 0.5mm, 1mm, and 2mm respectively.

[0032] A height adjustment gasket 5 is inserted under the adjustment plate 4. The height distance between the adjustment block 4 and the fixed plate 1 is achieved by increasing or decreasing the height adjustment gasket 5, thereby ensuring the position size of the positioning clamping mechanism. Two second avoidance grooves 15 for avoiding locking bolts are opened in the middle position of the height adjustment gasket 5, and the thicknesses are 0.1mm, 0.2mm, 0.5mm, 1mm, and 2mm respectively.

[0033] The flat washer 3 is a circular washer with a thickness of 5 mm and a bolt avoidance hole in the middle.

[0034] The positioning hole 10 is matched with the positioning mechanism. Further: the positioning mechanism has different shapes according to the characteristics of the workpiece, which is specifically the prior art in the art. For example, a first columnar positioning mechanism 18 matched with the positioning hole of the workpiece and a second positioning mechanism 19 matched with the end face of the workpiece. The two sets of positioning mechanisms and the clamping mechanism 16 are matched with the welding fixture adjustment mechanism 17 of this scheme to achieve accurate positioning of the workpiece.

[0035] The specific operation process of this embodiment is as follows:

[0036] Insert the positioning pins into the two pin holes 7 in the fixing plate 1 to fix the fixing plate 1 to the base plate, and the bolts are passed through the connection holes 6 to lock the fixing plate 1 to the base plate. Align the threaded holes 13 on both sides with the first slotted holes 8 in the fixing plate 1 and insert them. At the same time, insert the height adjustment gasket 5 at the lower end, and insert the adjustment gasket 2 into the gap between the threaded hole 13 of the adjustment plate and the L-shaped adjustment plate 1. Two bolts are respectively passed through the first slotted hole 8 and the threaded hole 13 to lock the adjustment plate 4 to the fixing plate 1. Four groups of bolts are respectively inserted to fix the height direction of the adjustment plate 4 through the flat washer 3 and the locking hole 12. Loosen the bolts on both sides and the four bolts on the upper end face, adjust the specifications and quantity of the height adjustment gasket 5 and the adjustment gasket 2 respectively, tighten the bolts on both sides respectively, and then tighten the four bolts on the upper end face in a diagonal manner in sequence to complete the adjustment of the number and specifications of the gaskets, thereby achieving the adjustment of the relative size.

Claims

1. A welding fixture adjustment mechanism, characterized in that: The fixing plate (1) comprises a fixing plate (1) and an adjusting plate (4); the fixing plate (1) is L-shaped, and a connecting hole (6) is vertically arranged on the fixing plate (1), and a first slot hole (8) and a second slot hole (9) are horizontally arranged; a locking hole (12) and a positioning hole (10) are vertically arranged on the adjusting plate (4), and a threaded hole (13) is horizontally arranged; It also includes a height adjustment gasket (5) arranged below the adjustment plate (4) and an adjustment gasket (2) arranged between the fixed plate (1) and the adjustment plate (4).

2. A welding fixture adjustment mechanism according to claim 1, characterized in that: The locking bolt passes through the first slot hole (8) and the second slot hole (9) and is threadedly matched with the threaded hole (13); the first slot hole (8) and the second slot hole (9) are stepped holes, respectively matching with the body and head of the locking bolt.

3. A welding fixture adjustment mechanism according to claim 1, characterized in that: There are four locking holes (12) arranged at the corners of the adjustment plate (4), and a flat washer (3) is arranged on the upper part of the locking hole (12).

4. A welding fixture adjustment mechanism according to claim 1, characterized in that: The height adjustment gasket (5) is M-shaped and is provided with a second avoidance groove (15) corresponding to the positioning hole (10).

5. The welding fixture adjustment mechanism according to claim 1, characterized in that: The adjusting gasket (2) is provided with a first avoidance groove (14) matching with the threaded hole (13).

6. The welding fixture adjustment mechanism according to claim 1, characterized in that: The positioning hole (10) cooperates with the positioning mechanism.

7. A welding fixture adjustment mechanism according to claim 6, characterized in that: The lower part of the positioning mechanism is interference-fitted with the positioning hole (10), and the upper part is matched with the positioning hole or the positioning surface of the workpiece.

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