Variable-angle welding positioning clamp

Abstract

The utility model discloses a variable-angle welding positioning clamp, and belongs to the field of machining. The device comprises a fixed bottom plate, a lead screw sleeve, a lead screw, three positioning blocks and a positioning baffle. Wherein the fixed bottom plate is provided with an installation lead screw sleeve which is fixed through a bolt, and a lead screw transmits needed clamping force. And a T-shaped groove is formed to limit the deviation of the positioning block. And three groups of diameters of the mounting positioning baffle plates are arranged and used for quickly adjusting required positioning at different angles, and the positioning block and the top block are matched for use, so that the positioning angle can be changed, and three angle tolerances of required welding angles of 60 degrees, 90 degrees and 120 degrees can be effectively ensured. A locking state is achieved through pre-tightening of the lead screw, the width range of a weldable workpiece ranges from 1 mm to 65 mm, the welding angle tolerance can be effectively improved by using the device for positioning and welding, and the situation that a gap is too large due to angle errors or the workpiece is scrapped due to structural deviation is avoided. And the first-pass yield can be increased to 100%.

Description

Technical Field

[0001] The utility model belongs to the field of mechanical processing, and specifically relates to an angle welding positioning device tooling. Background Art

[0002] It mainly involves the technical solutions, application fields, development trends and quality control aspects of angle welding. Reasonable and accurate angle splicing welding structure has the characteristics of high efficiency, reliability and high strength. Due to its high strength and stability, it can significantly improve the bearing capacity and stability of the structure and ensure the long-term safety of the structure. In order to obtain high-quality assembly angles, the machining angles and cutting angles of structural parts need to be more precise, which increases the difficulty of processing. Because welded frame structural parts are mostly used in the processing of profile blanks, they are affected by the clamping method, and the cutting angles often have errors. The errors at this time will cause the angles to deviate during assembly. The accumulated errors will gradually amplify, which will lead to the expansion of the splicing welds or deformation of the overall structure. It will not only affect the welding quality, but also affect the use of the overall installation, and even cause the workpiece to be scrapped. Utility Model Content

[0003] In response to the problems existing in the above background technology, the utility model provides a variable angle welding positioning fixture for 60°, 90°, and 120° angle welding, with precise positioning, simple switching, high working efficiency, and a 100% pass rate.

[0004] The technical solution of the present utility model is achieved as follows:

[0005] A variable-angle welding positioning fixture comprises a fixed base plate (1), a lead screw sleeve (2), a lead screw (3), a positioning block and a positioning baffle (7);

[0006] The fixed base plate is provided with a sliding limit groove and a positioning hole; the positioning block is constrained in the sliding limit groove and can move freely along the sliding limit groove; the lead screw sleeve is mounted on the fixed base plate, the lead screw is located in the lead screw sleeve (2), and the lead screw is threadedly connected to the lead screw sleeve; one end of the lead screw rests on the positioning block and is connected to the positioning block bearing;

[0007] The positioning holes are located on the fixed base plate and are distributed on both sides above the positioning block. The positioning baffle is connected to the fixed base plate through the positioning holes.

[0008] Furthermore, the positioning block is trapezoidal, and the angle formed by its two sides is 90°.

[0009] Furthermore, a top block is provided on the top of the positioning block, and the included angle of the waistline of the top block is 90°, 60° or 120°.

[0010] Furthermore, the positioning holes are divided into two groups, each group of positioning holes corresponds to a positioning baffle; each group of positioning holes includes a rotating connection hole, an adjustment hole and a locking mounting hole, wherein at least two locking mounting holes and at least two adjustment holes are provided; the locking mounting holes and the adjustment holes are distributed around the circumference of the rotating connection holes in the same group, and the corresponding locking mounting holes and adjustment holes are located on the same diameter;

[0011] The positioning baffle includes a through hole in the middle and positioning columns on both sides, one of which is installed in the rotating connection hole and the other positioning column matches the adjustment hole; the locking mounting hole corresponds to the through hole and is connected by a movable pin.

[0012] Furthermore, the other end of the lead screw is provided with a rotary block fixedly connected thereto.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The utility model can realize 60° acute angle welding positioning by using a lead screw positioning block at 45° and an additional top block at 60° or 120°, and pre-tightening by a pre-tightening mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0016] Figure 2 This is a schematic structural diagram of a 60° top block clamped in an embodiment of the present invention.

[0017] Figure 3 This is a schematic structural diagram of a 60° top block according to an embodiment of the present invention;

[0018] Figure 4 This is a schematic structural diagram of a 120° top block clamped in an embodiment of the present invention;

[0019] Figure 5 This is a schematic structural diagram of a 120° top block according to an embodiment of the present invention.

[0020] Figure 6 This is a structural schematic diagram of a fixed base plate according to an embodiment of the present utility model.

[0021] Figure 7 This is a structural diagram of a positioning block according to an embodiment of the present utility model.

[0022] In the figure: 1. Fixed base plate, 2. Screw sleeve, 3. Screw, 4. Sliding limit groove, 5. Positioning block, 6. Workpiece, 7. Positioning baffle, 8. Movable pin, 9. Rotary block, 10. Adjustment hole, 11. Rotary connection hole, 2-1, Fixed hole, 13. Through hole, 14. Positioning column. DETAILED DESCRIPTION

[0023] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Reference Figures 1 to 7 A variable angle welding positioning fixture includes a fixed base plate 1, a screw sleeve 2, a screw 3, a positioning block 5, and a positioning baffle 7.

[0025] Among them, four fixing holes 2-1 with a diameter of 10.5 mm are provided on the fixed base plate 1 for installing the screw sleeve 2; it uses the screw to transmit the required clamping force.

[0026] Two sliding limit grooves are provided on the fixed bottom plate, so that the positioning block can slide freely along the sliding limit grooves.

[0027] The fixing plate is provided with 3 groups of M10 threaded holes for installing the positioning baffle 7, which are used for positioning and fixing when different angles are required; there are 3 groups of 15mm diameter pin holes with a depth of 25mm for quick adjustment of positioning at different angles.

[0028] The screw 3 is combined with the screw sleeve 2 and the positioning block 5 to generate the clamping force. The positioning block 5 is used for conventional 90° fixing, and its 60° top block and 120° top block are used as supplementary pads when 60° and 120° are required, and replacement is quick and easy.

[0029] The positioning baffle (7) is provided with an M10 threaded mounting step hole and a cylindrical positioning column with a diameter of 15 mm.

[0030] It can effectively ensure the required welding angle tolerance of 60°, 90° and 120°.

[0031] The positioning baffle 7 can quickly adjust the positioning angle by utilizing the positioning hole of the fixed base plate 1.

[0032] The positioning block 4, the 60° top block and the 120° top block can be used together to change the positioning angle.

[0033] By adjusting the positioning block 4, the top block 60° and the top block 120°, the positioning angle can be changed to 60°, 90° and 120°. When the screw 3 is pre-tightened to reach a locked state, the weldable workpiece width range is between 1mm and 65mm. Using this device for positioning welding can effectively improve the welding angle tolerance, and the first-time pass rate is 100%.

[0034] The welded materials can be copper, aluminum, stainless steel and other non-ferrous metals. The welded parts can be square tubes, round bars, angle steels, I-beams. The welded parts can have a width range of 1mm-65mm and no length restrictions.

[0035] Take square steel 30×30×3mm as an example (the same applies to other structures). When welding at a 45° angle, adjust the positioning baffle 7 and insert the positioning column into the middle set of pin holes of the fixed base plate 1, and tighten the bolts. At this time, the fixed angle is 90°. The pre-tightening mechanism of the screw 3 positioning block 5 can achieve a 90° right-angle welding positioning. Figure 1 Schematic diagram.

[0036] Take square steel 30×30×3mm as an example (the same applies to other structures). When welding at a 60° angle, adjust the positioning baffle 7 and insert the positioning column into the innermost set of pin holes of the fixed base plate 1, and tighten the bolts. At this time, the fixed angle is a 60° acute angle. Through the screw 3 positioning block 5, add a 60° top block and pre-tighten the pre-tightening mechanism to achieve a 60° acute angle welding positioning. See the attached Figure 2 Schematic diagram.

[0037] Take the square steel 30×30×3mm as an example (the rest of the structure is the same), when welding at a 120° angle, adjust the positioning baffle 7 positioning column and insert it into the outermost set of pin holes of the fixed base plate 1, tighten the bolts, and the fixed angle is now 120° blunt angle. By adding a top block 120° through the screw 3 positioning block (5), and pre-tightening the pre-tightening mechanism, a 120° blunt angle welding positioning can be achieved. See the attached Figure 4 Schematic diagram.

[0038] The above description is merely an embodiment of the present invention, but the present invention is not limited to the embodiment. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit and principles of the present invention, and such equivalent modifications or substitutions are all within the scope defined by the claims of this application.

Claims

1. A variable angle welding positioning fixture, characterized in that: It comprises a fixed base plate (1), a screw sleeve (2), a screw (3), a positioning block and a positioning baffle (7); The fixed base plate is provided with a sliding limit groove and a positioning hole; the positioning block is constrained in the sliding limit groove and can move freely along the sliding limit groove; the lead screw sleeve is mounted on the fixed base plate, the lead screw is located in the lead screw sleeve (2), and the lead screw is threadedly connected to the lead screw sleeve; one end of the lead screw rests on the positioning block and is connected to the positioning block bearing; The positioning holes are located on the fixed base plate and are distributed on both sides above the positioning block. The positioning baffle is connected to the fixed base plate through the positioning holes.

2. The variable angle welding positioning fixture according to claim 1, characterized in that: The positioning block is trapezoidal, and the angle formed by its two sides is 90 degrees.

3. The variable angle welding positioning fixture according to claim 1, characterized in that: A top block is provided on the top of the positioning block, and the included angle of the waistline of the top block is 90°, 60° or 120°.

4. The variable angle welding positioning fixture according to claim 1, characterized in that: The positioning holes are divided into two groups, each group of positioning holes corresponds to a positioning baffle; each group of positioning holes includes a rotating connection hole, an adjustment hole and a locking mounting hole, wherein at least two locking mounting holes and at least two adjustment holes are provided; the locking mounting holes and the adjustment holes are distributed around the circumference of the rotating connection holes in the same group, and the corresponding locking mounting holes and adjustment holes are located on the same diameter; The positioning baffle includes a through hole in the middle and positioning columns on both sides, one of which is installed in the rotating connection hole and the other positioning column matches the adjustment hole; the locking mounting hole corresponds to the through hole and is connected by a movable pin.

5. The variable angle welding positioning fixture according to claim 1, characterized in that: The other end of the lead screw is provided with a rotary block fixedly connected thereto.

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