Forward and reverse universal jig

Abstract

The invention provides a forward and reverse universal jig which is applied to the technical field of automatic machine tool machining equipment and comprises a jig frame, the jig frame is of a quadrilateral structure, and two center plates are arranged in the middle of the jig frame; the clamping stable workpiece is used for limiting and fixing the processed material; the material pushing workpiece is used for pushing and driving the processed material; the clamping stable workpiece comprises a plurality of material receiving blocks, positioning blocks, connecting clamping plates, limiting blocks, first pressing pieces and second pressing pieces, all of which are arranged on the jig frame. The limiting block is arranged on the other side of the material pushing workpiece, and the first pressing piece and the second pressing piece are both arranged on the jig frame. The technical problems that the production efficiency is low and accumulative errors are prone to being generated due to the fact that an existing early-stage jig usually adopts a one-way fixing design and a workpiece needs to be detached, overturned, positioned and clamped again after single-face machining is completed are solved.

Description

Technical Field

[0001] This application relates to the technical field of automated machine tool processing equipment, and particularly relates to a universal fixture for both front and back sides. Background Art

[0002] The background art of the universal fixture for both front and back sides stems from the limitations of traditional welding and machining fixtures in two-way processes. Early fixtures usually adopted a one-way fixed design. After one-sided machining of the workpiece, it was necessary to disassemble, flip, and reposition and clamp it, resulting in low production efficiency and easy generation of cumulative errors. Especially in the composite processes of welding and precision machining of profiles such as aluminum alloy and stainless steel, frequent clamping not only increased the risk of surface damage to the workpiece, but also decreased the secondary positioning accuracy due to the influence of thermal deformation (usually exceeding ±0.2 mm).

[0003] At the same time, traditional split fixtures lacked a fast flipping mechanism and a design for high-temperature resistance and anti-deformation. The welding side was easily contaminated by welding slag splashes and was difficult to synchronously adapt to the cutting force impact of the machining center. Insufficient modularity led to a tool change time of up to several hours, making it difficult to meet the requirements of high-precision double-sided machining and batch rapid production change in scenarios such as new energy vehicle structural parts and aerospace frames. Summary of the Invention

[0004] This application aims to solve the technical problem that early fixtures usually adopted a one-way fixed design. After one-sided machining of the workpiece, it was necessary to disassemble, flip, and reposition and clamp it, resulting in low production efficiency and easy generation of cumulative errors, and provides a universal fixture for both front and back sides.

[0005] This application adopts the following technical means to solve the technical problem:

[0006] A universal fixture for both front and back sides, the universal fixture includes:

[0007] A fixture frame, the fixture frame is arranged in a quadrilateral structure and has two center plates in the middle;

[0008] A workpiece clamping and stabilizing member for limiting and fixing the workpiece to be processed;

[0009] A workpiece material pushing member for pushing and driving the workpiece to be processed.

[0010] Further, the workpiece clamping and stabilizing member includes a plurality of receiving blocks, positioning blocks, connecting clamping plates, limiting blocks, a first pressing member, and a second pressing member arranged on the fixture frame;

[0011] The plurality of receiving blocks are distributed on the fixture frame, the positioning blocks are arranged on the center plates, the connecting clamping plates are connected at the corner joints of the fixture frame, the limiting blocks are arranged on the other side of the workpiece material pushing member, and the first pressing member and the second pressing member are both arranged on the fixture frame.

[0012] Further, the material pushing workpiece includes two pneumatic push cylinders, and the pneumatic push cylinders are both arranged on one side of the jig frame.

[0013] Further, the jig frame is arranged as a rectangular frame.

[0014] Further, 6 receiving blocks are arranged in a row on the long side of the jig frame, 4 first pressing members are arranged in a row on the long side of the jig frame, and 2 first pressing members are arranged in a row on the short side of the jig frame.

[0015] Further, the two pneumatic push cylinders are arranged opposite to the two limit blocks.

[0016] Further, the number of the second pressing members is 2, and the second pressing members are respectively arranged on the corresponding two sides of the short side of the jig frame.

[0017] Further, the connecting card board is used for connecting the long side and the short side for limit fixing.

[0018] The present application provides a positive and negative universal jig, which has the following beneficial effects: through the jig frame, the jig frame is arranged in a quadrilateral structure and has two center plates in the middle; clamping and stabilizing the workpiece, the clamping and stabilizing the workpiece limits and fixes the workpiece to be processed; the material pushing workpiece, the material pushing workpiece drives the workpiece to be processed by pushing; the clamping and stabilizing the workpiece includes a plurality of receiving blocks, positioning blocks, connecting card boards, limit blocks, first pressing members and second pressing members arranged on the jig frame; the plurality of receiving blocks are distributed on the jig frame, the positioning blocks are arranged on the center plates, the connecting card boards are connected at the corner joints of the jig frame, the limit blocks are arranged on the other side of the material pushing workpiece, and the first pressing members and the second pressing members are both arranged on the jig frame; it has the technical problem of solving that the current early jigs usually adopt a one-way fixed design, and the workpiece needs to be disassembled, flipped and re-positioned and clamped after single-sided processing, resulting in low production efficiency and easy generation of cumulative errors. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the positive and negative universal jig of the present application.

[0020] The realization, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. Detailed Embodiments

[0021] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0022] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0023] It should be noted that the terms "including", "comprising" and "having" in the specification, claims and drawings of the present application and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products or devices. In the terms in the claims, specification and drawings of the present application, relational terms such as "first" and "second" are only used to distinguish one entity / operation / object from another entity / operation / object, and do not necessarily require or imply any actual relationship or order between these entities / operations / objects.

[0024] Referring to the accompanying drawings, it is a schematic diagram of the overall structure of a front and back universal fixture in an embodiment of the present application;

[0025] Reference appendix Figure 1 , which is a schematic diagram of the overall structure of a front and back universal fixture in an embodiment of the present application;

[0026] Embodiment 1

[0027] A front and back universal fixture, the universal fixture includes:

[0028] A fixture frame 1, the fixture frame 1 is arranged in a quadrilateral structure and has two center plates 3 in the middle;

[0029] A clamping and stabilizing workpiece, the clamping and stabilizing workpiece limits and fixes the workpiece to be processed;

[0030] A material pushing workpiece, the material pushing workpiece drives the workpiece to be processed by pushing.

[0031] In this embodiment, the workpiece clamping and stabilizing mechanism includes a plurality of receiving blocks 2, positioning blocks 4, connecting clamping plates 7, limiting blocks 9, first pressing members 6, and second pressing members 8 disposed on the fixture frame 1;

[0032] The plurality of receiving blocks 2 are distributed on the fixture frame 1, the positioning blocks 4 are disposed on the center plate 3, the connecting clamping plates 7 are connected to the corner joints of the fixture frame 1, the limiting blocks 9 are disposed on the other side of the material pushing workpiece, and the first pressing members 6 and the second pressing members 8 are both disposed on the fixture frame 1.

[0033] The material pushing workpiece includes two pneumatic push cylinders 5, and the pneumatic push cylinders 5 are both disposed on one side of the fixture frame 1.

[0034] Specifically,

[0035] When machining the first surface of the material, the first pressing member 6 rotates 90 degrees to the outside to avoid the material, the pneumatic push cylinder 5 pushes to the designated position, the first pressing member 6 rotates 90 degrees and then presses back to tightly hold the material without deviation. After machining, the pneumatic push cylinder 5 releases, and the first pressing member 6 rotates 90 degrees to avoid the workpiece, facilitating taking out, thus completing the material machining cycle process;

[0036] When machining the second surface, the second pressing member 8 is used for positioning, and the machining position is offset to avoid the first pressing member 6 and then continues to be machined while being pressed by the first pressing member 6, so that the product can be machined repeatedly on both sides.

[0037] In this embodiment, the fixture frame 1 is provided with a rectangular frame.

[0038] Six receiving blocks 2 are arranged in a row on the long side of the fixture frame 1, four first pressing members 6 are arranged in a row on the long side of the fixture frame 1, and two first pressing members 6 are arranged in a row on the short side of the fixture frame 1.

[0039] The two pneumatic push cylinders 5 are arranged opposite to the two limiting blocks 9.

[0040] The number of the second pressing members 8 is 2, and the two second pressing members 8 are respectively arranged on the corresponding two sides of the short side of the fixture frame 1.

[0041] The connecting clamping plate 7 is used for connecting and limiting and fixing the long side and the short side.

[0042] Specifically,

[0043] With such a fixture frame 1, a high-strength aluminum alloy rectangular frame is adopted, and two carbon steel center plates 3 with T-shaped cross-sections are welded in the middle to form a double-support structure. The four corners of the frame are bolted and locked with the long side and the short side through connecting clamping plates 7 with shock-absorbing rubber pads to ensure overall rigidity and reduce vibration interference. The material receiving block 2 for stably clamping the workpiece adopts a stepped adjustable design. A spring preloading mechanism is integrated at the bottom of each material receiving block 2 to absorb material tolerances. The positioning blocks 4 are fixed on both sides of the center plate 3 and embedded with ceramic wear-resistant chips. The first pressing member 6 and the second pressing member 8 are respectively equipped with pneumatic rotary cylinders and self-locking V-shaped jaws. The second pressing members 8 on both sides of the short side achieve two-way avoidance through an eccentric wheel mechanism.

[0044] The two pneumatic push cylinders 5 for pushing the workpiece by the material and the limit blocks 9 are driven by magnetic coupling rodless cylinders. A polyurethane buffer head is installed at the end of the push, and an optoelectronic sensor is integrated to real-time feedback the signal of the material in place.

[0045] During processing, the first pressing member 6 is precisely flipped 90° by a servo motor to avoid the material. Then the pneumatic push cylinder 5 pushes the material to the processing position. After the pressing member returns, the clamping state is monitored by a pressure sensor. When processing the reverse side, the second pressing member 8 laterally offsets 10 mm along the slide rail to avoid the front clamping area. At the same time, a coolant channel is reserved in the center plate 3 to suppress welding thermal deformation. A quick-change interface is added at the bottom of the fixture to support switching different model positioning modules within 10 minutes.

[0046] Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a system, or a computer program product. Therefore, the present invention can be implemented in the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention can be implemented in the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0047] The present invention is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, and the combination of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate means for implementing the functions specified in Figure 1 one process or multiple processes and / or blocks Figure 1 one block or multiple blocks.

[0048] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means embodying the functionality specified in the flowchart Figure 1 a flowchart or multiple flowcharts and / or blocks Figure 1 specified in a block or multiple blocks.

[0049] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable apparatus provide steps for implementing the functionality specified in the flowchart Figure 1 a flowchart or multiple flowcharts and / or blocks Figure 1 specified in a block or multiple blocks.

[0050] Although embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made in these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A universal jig for both front and back, characterized in that: The universal fixture comprises: A jig frame, wherein the jig frame is a quadrilateral structure with two center plates in the middle; Clamping and stabilizing the workpiece, wherein the clamping and stabilizing the workpiece is used to limit and fix the material being processed; The material pushing workpiece pushes and drives the processed material.

2. The universal jig for both front and back according to claim 1, characterized in that: The clamping and stabilizing workpiece comprises a plurality of material receiving blocks, positioning blocks, connecting clamps, limiting blocks, a first pressing piece and a second pressing piece arranged on a jig frame; The multiple material receiving blocks are distributed on the jig frame, the positioning block is arranged on the center plate, the connecting clamp is connected to the corner connection of the jig frame, the limit block is arranged on the other side of the material pushing workpiece, and the first pressing part and the second pressing part are both arranged on the jig frame.

3. The universal jig for both front and back according to claim 1, characterized in that: The material pushing workpiece includes two pneumatic pushing cylinders, and the pneumatic pushing cylinders are both arranged on one side of the fixture frame.

4. The universal jig for both front and back according to claim 1, characterized in that: The fixture frame is arranged in a rectangular frame.

5. The universal jig for both front and back according to claim 4, characterized in that: A plurality of the material receiving blocks are arranged in a row of 6 on the long side of the jig frame, a plurality of the first pressing members are arranged in a row of 4 on the long side of the jig frame, and a plurality of the first pressing members are arranged in a row of 2 on the short side of the jig frame.

6. The universal jig for both front and back according to claim 3, characterized in that: The two pneumatic push cylinders are arranged opposite to each other corresponding to the two limit blocks.

7. The universal jig for both front and back according to claim 1, characterized in that: The number of the second pressing parts is 2, and the second pressing parts are arranged on two sides corresponding to the short side of the fixture frame.

8. The universal jig for both front and back according to claim 4, characterized in that: The connecting card plate is used to connect the long side and the short side to limit and fix them.

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