A fixture for metal rod section machining

Abstract

The utility model discloses a kind of clamps for metal rod piece section bar processing.The clamp for metal rod piece section bar processing includes bottom plate, the side of bottom plate movably connected with positioning rod, the outer circumferential surface of positioning rod is the length direction of workpiece's abutment surface, the top surface of bottom plate is provided with locating block and support block, the side edge of locating block towards support block is provided with first recess, the side edge of support block towards locating block is provided with second recess, first recess and second recess cooperate and support the flat bottom protruding portion of workpiece top edge, the vertical surface of first recess is the width direction of workpiece's abutment surface, bottom plate is provided with first pressing mechanism, for pressing workpiece.The utility model solves the problem of prior art workpiece processing precision, high scrap rate.

Description

Technical Field

[0001] This utility model relates to the field of tooling technology, and in particular to a fixture for processing metal rods and profiles. Background Technology

[0002] like Figure 1 The diagram shows a cross-sectional view of a metal rod profile (hereinafter referred to as workpiece a). The two end faces of the workpiece and the grooves and holes on its top surface need to be machined. However, the bottom surface of the workpiece is arc-shaped. If it is clamped directly, the workpiece is easy to deflect. Although it does not affect the machining of the two end faces, it is difficult to guarantee the positional accuracy of the grooves and holes, resulting in a high scrap rate of the workpiece. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a fixture for machining metal rods and profiles that can improve machining accuracy and thus reduce workpiece scrap rate.

[0004] To achieve the above objectives, the technical solution of the fixture for processing metal rods and profiles according to this utility model is as follows:

[0005] A fixture for processing metal rods and profiles includes a base plate, a positioning rod movably connected to one side of the base plate, the outer circumferential surface of the positioning rod being the backing surface of the workpiece along its length, a positioning block and a support block being provided on the top surface of the base plate, a first groove being formed on one side edge of the positioning block facing the support block, and a second groove being formed on one side edge of the support block facing the positioning block, the first and second grooves cooperating to support the flat-bottomed protrusion of the top edge of the workpiece, the vertical surface of the first groove being the backing surface of the workpiece along its width, and a first clamping mechanism being provided on the base plate for clamping the workpiece.

[0006] Preferably, the first pressing mechanism includes a first rotary cylinder fixedly connected to the base plate, a first cantilever fixedly connected to the output end of the first rotary cylinder, a first pressure rod provided at the end of the first cantilever away from the first rotary cylinder, a first pressure head provided at the bottom of the first pressure rod, when the first pressure head rotates to press the workpiece, one side end face of the workpiece abuts against the outer peripheral surface of the positioning rod, and one side wall of the workpiece abuts against the vertical surface of the first groove.

[0007] Preferably, the positioning rod is movably connected to the base plate via a push cylinder, the cylinder body of the push cylinder is fixed to the ground of the base plate, and the telescopic rod of the push cylinder is fixedly connected to the positioning rod that penetrates the base plate.

[0008] Preferably, a second pressing mechanism is provided opposite the first pressing mechanism to the base plate. The second pressing mechanism includes a second rotary cylinder fixedly connected to the base plate. A second cantilever is fixedly connected to the output end of the second rotary cylinder. A second pressure rod is provided at the end of the second cantilever away from the second rotary cylinder. A second pressure head is provided at the bottom of the second pressure rod.

[0009] Preferably, the base plate has clearance grooves on both sides.

[0010] Compared with the prior art, this utility model has the following advantages:

[0011] 1. The workpiece is placed between the positioning block and the support block by using the flat-bottomed protrusion on the top edge of the workpiece. The workpiece is positioned in the length direction by using the positioning rod and in the width direction by using the vertical surface of the first groove. This achieves precise positioning of the workpiece. The first clamping mechanism is then used to fix the workpiece to prevent it from shifting during processing, thereby improving the processing accuracy of the workpiece and reducing the scrap rate of the workpiece.

[0012] 2. During the process of the first rotary cylinder driving the first pressure head to press the workpiece, the workpiece is subjected to the component forces in both the length and width directions, ensuring that the workpiece is in close contact with the outer circumference of the positioning rod and the vertical surface of the first groove at the same time. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of a metal rod profile.

[0014] Figure 2 This is a top view of the fixture used for processing metal rods and profiles according to this utility model.

[0015] Figure 3 This is a diagram showing the state of the positioning block and the support block working together to support the workpiece.

[0016] Figure 4 This is a schematic diagram of the first clamping mechanism.

[0017] Figure 5 This is a diagram showing the state of the workpiece being held by the fixture used in the processing of metal rods and profiles according to this utility model.

[0018] Among them, a is a metal rod profile, a1 is a flat bottom protrusion, 1 is a base plate, 11 is a clearance groove, 2 is a positioning block, 21 is a first groove, 3 is a support block, 31 is a second groove, 4 is a positioning rod, 5 is a first pressing mechanism, 51 is a first rotary cylinder, 52 is a first cantilever, 53 is a first pressure rod, 54 is a first pressure head, 6 is a second pressing mechanism, 61 is a second rotary cylinder, and 62 is a second cantilever. Detailed Implementation

[0019] The present invention will be further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0020] like Figure 2-5As shown, a fixture for processing metal rods and profiles includes a base plate 1. Positioning blocks 2 are installed on the left and right sides of the center of the top surface of the base plate. Two support blocks 3 are installed on each of the front and rear sides of the base plate near the positioning blocks. A first groove 21 is formed on one edge of the positioning blocks facing the support blocks, and a second groove 31 is formed on one edge of the support blocks facing the positioning blocks. A clearance for workpiece movement (including between the vertical surfaces of the first and second grooves) is provided between the positioning blocks and the support blocks to facilitate workpiece loading and unloading. The first and second grooves cooperate to support the flat-bottomed protrusion a1 at the top edge of the workpiece. The elevation is the backing surface along the width of the workpiece, thus forming two workstations to improve production efficiency. The base plate has clearance grooves 11 on both sides of the two workstations to prevent interference between the cutting tool and the base plate when machining the workpiece end face. A positioning rod 4 is arranged on the left side of each workstation. The outer circumference of the positioning rod is the backing surface along the length of the workpiece. The positioning rod is movably connected to the base plate via a horizontal thrust cylinder (not shown). The cylinder body of the horizontal thrust cylinder is fixed to the base plate surface. The extension rod of the horizontal thrust cylinder is fixed to the positioning rod penetrating the base plate. Four first pressing mechanisms 5 are installed on the base plate. The clamping mechanisms are arranged in pairs to clamp the workpiece. One pair of first clamping mechanisms is installed on the front edge of the base plate, and the other pair is installed on the rear edge of the base plate. The first clamping mechanism includes a first rotary cylinder 51 fixedly connected to the base plate. The output end of the first rotary cylinder is fixedly connected to a first cantilever 52. The end of the first cantilever away from the first rotary cylinder is fixedly connected to a first pressure rod 53. A first pressure head 54 is installed at the bottom of the first pressure rod. The first pressure head can be made of plastic to avoid scratching the workpiece. When the first pressure head rotates to clamp the workpiece, one end face of the workpiece abuts against the outer circumference of the positioning rod. One side wall of the workpiece abuts against the vertical surface of the first groove. The bottom plate is located opposite the first pressing mechanism. That is, two second pressing mechanisms 6 are installed in the middle of the bottom plate to further improve the stability of the workpiece. The second pressing mechanism includes a second rotary cylinder 61 fixedly connected to the bottom plate. The output end of the second rotary cylinder is fixedly connected to a second cantilever 62. A second pressure rod (the structure of the second pressure rod is exactly the same as the structure of the first pressure rod) is installed at the end of the second cantilever away from the second rotary cylinder. A second pressure head (the structure of the second pressure head is exactly the same as the structure of the first pressure head) is installed at the bottom of the second pressure rod.

[0021] The specific working process and working principle of this utility model are as follows: The workpiece is placed in two stations in sequence. The left end of the workpiece is in contact with the positioning rod, and the edge of the flat bottom protrusion on one side of the workpiece is in contact with the vertical surface of the first groove. First, the first rotary cylinder is started. The first cantilever of the front group rotates counterclockwise, and the first cantilever of the rear group rotates clockwise. During the process of the first pressure head pressing the workpiece, the workpiece is subjected to the component forces in both length and width directions, ensuring that the workpiece is in close contact with the outer circumference of the positioning rod and the vertical surface of the first groove at the same time. There is no need for continuous manual support of the workpiece, which reduces the difficulty of operation. Then, the second rotary cylinder is started to drive the second pressure head to further press the workpiece. Finally, the flat push cylinder is started to drive the positioning rod to retract, so as to facilitate the processing of the end face of the workpiece. This invention utilizes the flat-bottomed protrusion on the top edge of the workpiece to position it between the positioning block and the support block. A positioning rod positions the workpiece along its length, while the vertical surface of the first groove positions it along its width, achieving precise workpiece positioning. A first clamping mechanism then secures the workpiece, preventing displacement during processing. This improves workpiece machining accuracy and reduces scrap rates. Furthermore, it is easy to operate and offers high production efficiency.

Claims

1. A fixture for machining metal rods and profiles, characterized in that: The device includes a base plate, on one side of which a positioning rod is movably connected. The outer circumferential surface of the positioning rod serves as the backing surface along the length of the workpiece. The top surface of the base plate is provided with a positioning block and a support block. The positioning block has a first groove on one side edge facing the support block, and the support block has a second groove on one side edge facing the positioning block. The first and second grooves cooperate to support the flat-bottomed protrusion at the top edge of the workpiece. The vertical surface of the first groove serves as the backing surface along the width of the workpiece. The base plate is provided with a first clamping mechanism for clamping the workpiece.

2. The fixture for machining metal rods and profiles according to claim 1, characterized in that: The first pressing mechanism includes a first rotary cylinder fixedly connected to the base plate. A first cantilever is fixedly connected to the output end of the first rotary cylinder. A first pressure rod is provided at the end of the first cantilever away from the first rotary cylinder. A first pressure head is provided at the bottom of the first pressure rod. When the first pressure head rotates to press the workpiece, one end face of the workpiece abuts against the outer peripheral surface of the positioning rod, and one side wall of the workpiece abuts against the vertical surface of the first groove.

3. The fixture for machining metal rods and profiles according to claim 2, characterized in that: The positioning rod is movably connected to the base plate via a horizontal push cylinder. The cylinder body of the horizontal push cylinder is fixed to the ground of the base plate, and the telescopic rod of the horizontal push cylinder is fixedly connected to the positioning rod that penetrates the base plate.

4. The fixture for machining metal rods and profiles according to claim 2, characterized in that: The base plate is located opposite the first pressing mechanism and a second pressing mechanism is provided. The second pressing mechanism includes a second rotary cylinder fixedly connected to the base plate. A second cantilever is fixedly connected to the output end of the second rotary cylinder. A second pressure rod is provided at the end of the second cantilever away from the second rotary cylinder. A second pressure head is provided at the bottom of the second pressure rod.

5. The fixture for machining metal rods and profiles according to claim 1, characterized in that: The bottom plate has clearance grooves on both sides.

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