Initial metal workpiece machining clamp

Abstract

The utility model discloses an initial metal workpiece machining clamp which comprises an initial machining clamp body, initial assembly receding grooves are formed in the two sides of the initial machining clamp body, limiting clamping mechanisms are arranged on the upper portion and the lower portion of the initial machining clamp body, and a side limiting fixing pin is arranged on one side of the initial machining clamp body. A side ball head movable pin is arranged on the other side of the initial machining clamp, an upper ball head movable pin is arranged between the limiting clamping mechanisms on the upper portion of the initial machining clamp, and a lower limiting fixing pin is arranged between the limiting clamping mechanisms on the lower portion of the initial machining clamp. According to the initial metal workpiece machining clamp, the upper edge of a metal workpiece is further positioned through a first upper limiting clamping mechanism, a first upper ball head movable pin, a second upper limiting clamping mechanism, a second upper limiting clamping mechanism and a third upper limiting clamping mechanism, and the right edge of the metal workpiece is clamped into the inner side of a side ball head movable pin; the whole workpiece is completely fixed, the machining precision is improved, and machining errors are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of metal processing fixtures, in particular to an initial metal workpiece processing fixture. Background Art

[0002] Fixtures are often used in metal processing. Currently, existing technologies often use CNC machine tools to process metal workpieces. However, most of the current fixtures are general fixtures, and there is a lack of specific fixtures for a certain processing procedure of metal workpieces. In the initial stage of processing, CNC machine tools are required to process metal blanks, especially metal parts of aircraft, which require high precision and many processing steps. The workpiece needs to be accurately positioned in the initial and subsequent processing to avoid errors in each positioning and the accumulation of errors. The positioning process requires convenience, efficiency and precision. Utility Model Content

[0003] The purpose of the utility model is to provide an initial metal workpiece processing fixture to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an initial metal workpiece processing fixture, including an initial processing fixture, initial assembly clearance grooves are arranged on both sides of the initial processing fixture, limit clamping mechanisms are arranged on the upper and lower parts of the initial processing fixture, a side limit fixing pin is arranged on one side of the initial processing fixture, a side ball head movable pin is arranged on the other side of the initial processing fixture, an upper ball head movable pin is arranged between the limit clamping mechanisms of the upper part of the initial processing fixture, and a lower limit fixing pin is arranged between the limit clamping mechanisms of the lower part of the initial processing fixture.

[0005] Furthermore, the top of the side ball head movable pin is spherical, and a side positioning blind hole is provided at the lower side position of the initial assembly yield groove on the right side of the initial processing fixture, and the bottom ball joint of the side ball head movable pin is connected to the side positioning blind hole.

[0006] Furthermore, a truncated cone portion is provided on the surface edge of the side positioning blind hole.

[0007] Furthermore, the limit clamping mechanism includes an upper limit clamping mechanism group and a lower limit clamping mechanism group, the upper limit clamping mechanism group includes a first upper limit clamping mechanism, a second upper limit clamping mechanism and a third upper limit clamping mechanism which are sequentially arranged on the upper part of the initial processing fixture, and the lower limit clamping mechanism group includes a first lower limit clamping mechanism, a second lower limit clamping mechanism and a third lower limit clamping mechanism which are sequentially arranged on the lower part of the initial processing fixture.

[0008] Furthermore, a first upper ball head movable pin is arranged between the first lower limit clamping mechanism and the second lower limit clamping mechanism, and a second upper ball head movable pin is arranged between the second lower limit clamping mechanism and the third lower limit clamping mechanism.

[0009] A first lower limit fixing pin is arranged between the first upper limit clamping mechanism and the second upper limit clamping mechanism, and a second lower limit fixing pin is arranged between the second upper limit clamping mechanism and the third upper limit clamping mechanism.

[0010] Furthermore, the upper ball head movable pin includes a first upper ball head movable pin and a second upper ball head movable pin, and the lower limit fixing pin includes a first lower limit fixing pin and a second lower limit fixing pin.

[0011] Furthermore, the first lower limit clamping mechanism includes a limit clamping connecting block, a half-head connecting tube, a limit clamping claw and a clamping claw connecting bolt, the limit clamping connecting block is connected to the groove on the edge of the initial processing fixture, the half-head connecting tube is fixedly connected to the limit clamping connecting block, and the clamping claw connecting bolt passes through the limit clamping claw and is threadedly connected to the half-head connecting tube.

[0012] Furthermore, when the clamping jaw connecting bolt is in a screwed-out state, the half-head connecting tube and the limit clamping claw are in rotational contact with each other, and when the clamping jaw connecting bolt is in a tightened state, the half-head connecting tube and the limit clamping claw are engaged and connected with each other.

[0013] Furthermore, it also includes a first main positioning groove, a first auxiliary positioning groove, a second auxiliary positioning groove, a third auxiliary positioning groove, a second main positioning groove, a fourth auxiliary positioning groove, a fifth auxiliary positioning groove and a sixth auxiliary positioning groove arranged in a centrally symmetrical rectangular array clockwise.

[0014] Furthermore, the initial assembly clearance groove is a rounded rectangular groove used to accommodate the assembler's hand during assembly, and the initial assembly clearance groove includes a first initial assembly clearance groove arranged on the left edge of the initial processing fixture and a second initial assembly clearance groove arranged on the right edge of the initial processing fixture.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The initial metal workpiece processing fixture clamps the blank metal processing plate on the surface of the initial metal workpiece processing fixture. First, the lower edge of the metal workpiece is placed on the first lower limit clamping mechanism 121, the first lower limit fixing pin, the second lower limit clamping mechanism, the second lower limit fixing pin and the third lower limit clamping mechanism, and the left edge of the metal workpiece is placed on the side limit fixing pin, so that the position of the metal workpiece is fixed.

[0017] Then, the upper edge of the metal workpiece is further positioned by the first upper limit clamping mechanism, the first upper ball head movable pin, the second upper limit clamping mechanism, the second upper limit clamping mechanism and the third upper limit clamping mechanism. The right edge of the metal workpiece is inserted into the inner side of the side ball head movable pin to completely fix the entire workpiece, thereby improving the processing accuracy and reducing the processing error. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front view structural schematic diagram of the initial metal workpiece processing fixture described in Example 1 of the utility model;

[0019] Figure 2 This is a three-dimensional structural schematic diagram of the initial metal workpiece processing fixture described in Example 1 of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the first lower limit clamping mechanism of the initial metal workpiece processing fixture described in Example 1 of the utility model;

[0021] Figure 4 This is a schematic diagram of the side ball head movable pin structure of the initial metal workpiece processing fixture described in Example 2 of the utility model.

[0022] In the figure: 100, initial processing fixture; 120, limit clamping connection block; 121, first lower limit clamping mechanism; 122, second lower limit clamping mechanism; 123, third lower limit clamping mechanism; 124, first upper limit clamping mechanism; 125, second upper limit clamping mechanism; 126, third upper limit clamping mechanism; 127, clamping jaw connecting bolt; 128, half head connecting cylinder; 129, limit clamping jaw; 131, side limit fixing pin; 132, first lower limit fixing pin; 133, second lower limit fixing Pin; 141, first upper ball head movable pin; 142, second upper ball head movable pin; 143, side ball head movable pin; 144, elastic ring; 145, frustum; 151, first initial assembly clearance groove; 152, second initial assembly clearance groove; 161, first main positioning groove; 162, first auxiliary positioning groove; 163, second auxiliary positioning groove; 164, third auxiliary positioning groove; 165, second main positioning groove; 166, fourth auxiliary positioning groove; 167, fifth auxiliary positioning groove; 168, sixth auxiliary positioning groove. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1

[0025] like Figure 1-4 As shown, the utility model provides a technical solution: an initial metal workpiece processing fixture, including an initial processing fixture 100, initial assembly clearance grooves are arranged on both sides of the initial processing fixture 100, and limit clamping mechanisms are arranged on the upper and lower parts of the initial processing fixture 100, a side limit fixing pin 131 is arranged on one side of the initial processing fixture 100, and a side ball head movable pin 143 is arranged on the other side of the initial processing fixture 100, an upper ball head movable pin is arranged between the upper limit clamping mechanism of the initial processing fixture 100, and a lower limit fixing pin is arranged between the lower limit clamping mechanism of the initial processing fixture 100.

[0026] Furthermore, the top of the side ball head movable pin 143 is spherical, and a side positioning blind hole is set at the lower side position of the initial assembly yield groove on the right side of the initial processing fixture 100, and the bottom ball joint of the side ball head movable pin 143 is connected to the side positioning blind hole.

[0027] Furthermore, a truncated cone portion 145 is provided on the surface edge of the side positioning blind hole.

[0028] Furthermore, the limit clamping mechanism includes an upper limit clamping mechanism group and a lower limit clamping mechanism group, the upper limit clamping mechanism group includes a first upper limit clamping mechanism 124, a second upper limit clamping mechanism 125 and a third upper limit clamping mechanism 126 which are sequentially arranged on the upper part of the initial processing fixture 100, and the lower limit clamping mechanism group includes a first lower limit clamping mechanism 121, a second lower limit clamping mechanism 122 and a third lower limit clamping mechanism 123 which are sequentially arranged on the lower part of the initial processing fixture 100.

[0029] Furthermore, a first upper ball head movable pin 141 is provided between the first lower limit clamping mechanism 121 and the second lower limit clamping mechanism 122, and a second upper ball head movable pin 142 is provided between the second lower limit clamping mechanism 122 and the third lower limit clamping mechanism 123.

[0030] A first lower limit fixing pin 132 is disposed between the first upper limit clamping mechanism 124 and the second upper limit clamping mechanism 125 , and a second lower limit fixing pin 133 is disposed between the second upper limit clamping mechanism 125 and the third upper limit clamping mechanism 126 .

[0031] Furthermore, the upper ball head movable pin includes a first upper ball head movable pin 141 and a second upper ball head movable pin 142 , and the lower limit fixing pin includes a first lower limit fixing pin 132 and a second lower limit fixing pin 133 .

[0032] Furthermore, the first lower limit clamping mechanism 121 includes a limit clamping connecting block 120, a half-head connecting tube 128, a limit clamping claw 129 and a clamping claw connecting bolt 127, the limit clamping connecting block 120 is connected to the groove on the edge of the initial processing fixture 100, the half-head connecting tube 128 is fixedly connected to the limit clamping connecting block 120, and the clamping claw connecting bolt 127 passes through the limit clamping claw 129 and is threadedly connected to the half-head connecting tube 128.

[0033] Furthermore, when the clamp connecting bolt 127 is in a screwed-out state, the half-head connecting cylinder 128 and the limit clamping claw 129 are in rotational contact with each other, and when the clamp connecting bolt 127 is in a tightened state, the half-head connecting cylinder 128 and the limit clamping claw 129 are engaged and connected with each other.

[0034] Furthermore, it also includes a first main positioning groove 161, a first auxiliary positioning groove 162, a second auxiliary positioning groove 163, a third auxiliary positioning groove 164, a second main positioning groove 165, a fourth auxiliary positioning groove 166, a fifth auxiliary positioning groove 167 and a sixth auxiliary positioning groove 168 which are arranged in a clockwise and centrally symmetrical rectangular array.

[0035] Furthermore, the initial assembly clearance groove is a rounded rectangular groove used to accommodate the assembler's hand during assembly, and the initial assembly clearance groove includes a first initial assembly clearance groove 151 arranged on the left edge of the initial processing fixture 100 and a second initial assembly clearance groove 152 arranged on the right edge of the initial processing fixture 100.

[0036] Working principle: This initial metal workpiece processing fixture clamps the blank metal processing plate on the surface of the initial metal workpiece processing fixture. First, the lower edge of the metal workpiece is placed on the first lower limit clamping mechanism 121, the first lower limit fixing pin 132, the second lower limit clamping mechanism 122, the second lower limit fixing pin 133 and the third lower limit clamping mechanism 123, and the left edge of the metal workpiece is placed on the side limit fixing pin 131, so that the position of the metal workpiece is fixed;

[0037] Then, the upper edge of the metal workpiece is further positioned by the first upper limit clamping mechanism 124, the first upper ball head movable pin 141, the second upper limit clamping mechanism 125, the second upper limit clamping mechanism 142 and the third upper limit clamping mechanism 126. The right edge of the metal workpiece is inserted into the inner side of the side ball head movable pin to completely fix the entire workpiece, thereby improving the processing accuracy and reducing the processing error.

[0038] When the worker installs and removes the metal workpiece, the left fingers are located in the first initial assembly clearance groove 151, and the right fingers are located in the second initial assembly clearance groove 152. This eliminates the worker's hands from being clamped between the metal workpiece and the initial processing fixture 100, and the hands do not apply force to the initial processing fixture 100, thereby eliminating the influence of the operation on the positioning accuracy of the metal workpiece.

[0039] The first main positioning groove 161, the first auxiliary positioning groove 162, the second auxiliary positioning groove 163, the third auxiliary positioning groove 164, the second main positioning groove 165, the fourth auxiliary positioning groove 166, the fifth auxiliary positioning groove 167 and the sixth auxiliary positioning groove 168 are arranged in a clockwise centrally symmetrical rectangular array, which can perform auxiliary positioning after the CNC machine tool drills the metal workpiece, and the structural arrangement in a clockwise centrally symmetrical rectangular array can allow the metal workpiece blank to be processed into a centrally symmetrical workpiece, so as to subsequently process two identical or symmetrical workpieces.

[0040] Tighten the clamp connecting bolt 127, and clamp the metal workpiece through the first lower limit clamping mechanism 121, the second lower limit clamping mechanism 122, the third lower limit clamping mechanism 123, the first upper limit clamping mechanism 124, the second upper limit clamping mechanism 125 and the third upper limit clamping mechanism 126 to ensure that the position of the metal workpiece is stable during processing.

[0041] Example 2

[0042] like Figure 4 As shown, the difference between this embodiment and embodiment 1 is that an elastic ring 144 is sleeved on the side ball head movable pin 143, and the elastic ring 144 is arranged at the outer end of the side positioning blind hole, and the edge of the elastic ring 144 is in contact with the frustum portion 145.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An initial metal workpiece processing fixture, characterized in that: The invention comprises an initial processing fixture (100), initial assembly clearance grooves are arranged on both sides of the initial processing fixture (100), limit clamping mechanisms are arranged on the upper and lower parts of the initial processing fixture (100), a side limit fixing pin (131) is arranged on one side of the initial processing fixture (100), and a side ball head movable pin (143) is arranged on the other side of the initial processing fixture (100), an upper ball head movable pin is arranged between the limit clamping mechanisms at the upper part of the initial processing fixture (100), and a lower limit fixing pin is arranged between the limit clamping mechanisms at the lower part of the initial processing fixture (100).

2. The initial metal workpiece processing fixture according to claim 1, characterized in that: The top of the side ball head movable pin (143) is spherical, and a side positioning blind hole is provided at the lower side of the initial assembly clearance groove on the right side of the initial processing fixture (100), and the bottom of the side ball head movable pin (143) is ball-jointed in the side positioning blind hole.

3. The initial metal workpiece processing fixture according to claim 2, characterized in that: A truncated cone portion (145) is provided on the surface edge of the side positioning blind hole.

4. The initial metal workpiece processing fixture according to claim 1, characterized in that: The limit clamping mechanism comprises an upper limit clamping mechanism group and a lower limit clamping mechanism group, the upper limit clamping mechanism group comprises a first upper limit clamping mechanism (124), a second upper limit clamping mechanism (125) and a third upper limit clamping mechanism (126) which are sequentially arranged on the upper part of the initial processing fixture (100), and the lower limit clamping mechanism group comprises a first lower limit clamping mechanism (121), a second lower limit clamping mechanism (122) and a third lower limit clamping mechanism (123) which are sequentially arranged on the lower part of the initial processing fixture (100).

5. The initial metal workpiece processing fixture according to claim 4, characterized in that: A first upper ball head movable pin (141) is arranged between the first lower limit clamping mechanism (121) and the second lower limit clamping mechanism (122), and a second upper ball head movable pin (142) is arranged between the second lower limit clamping mechanism (122) and the third lower limit clamping mechanism (123). A first lower limit fixing pin (132) is arranged between the first upper limit clamping mechanism (124) and the second upper limit clamping mechanism (125), and a second lower limit fixing pin (133) is arranged between the second upper limit clamping mechanism (125) and the third upper limit clamping mechanism (126).

6. The initial metal workpiece processing fixture according to claim 5, characterized in that: The upper ball head movable pin comprises a first upper ball head movable pin (141) and a second upper ball head movable pin (142), and the lower limit fixing pin comprises a first lower limit fixing pin (132) and a second lower limit fixing pin (133).

7. The initial metal workpiece processing fixture according to claim 4, characterized in that: The first lower limit clamping mechanism (121) comprises a limit clamping connection block (120), a half-head connection tube (128), a limit clamping claw (129) and a clamping claw connecting bolt (127); the limit clamping connection block (120) is connected to a groove on the edge of the initial processing fixture (100); the half-head connection tube (128) is fixedly connected to the limit clamping connection block (120); and the clamping claw connecting bolt (127) passes through the limit clamping claw (129) and is threadedly connected to the half-head connection tube (128).

8. The initial metal workpiece processing fixture according to claim 7, characterized in that: When the clamping jaw connecting bolt (127) is in a screwed-out state, the half-head connecting tube (128) and the position-limiting clamping jaw (129) are in rotational contact with each other; when the clamping jaw connecting bolt (127) is in a tightened state, the half-head connecting tube (128) and the position-limiting clamping jaw (129) are in mutual engagement connection.

9. The initial metal workpiece processing fixture according to claim 1, characterized in that: It also includes a first main positioning groove (161), a first auxiliary positioning groove (162), a second auxiliary positioning groove (163), a third auxiliary positioning groove (164), a second main positioning groove (165), a fourth auxiliary positioning groove (166), a fifth auxiliary positioning groove (167) and a sixth auxiliary positioning groove (168) arranged in a centrally symmetrical rectangular array in a clockwise direction.

10. The initial metal workpiece processing fixture according to claim 1, characterized in that: The initial assembly clearance groove is a rounded rectangular groove used to accommodate the hand of the assembler during assembly, and the initial assembly clearance groove comprises a first initial assembly clearance groove (151) arranged on the left edge of the initial processing fixture (100) and a second initial assembly clearance groove (152) arranged on the right edge of the initial processing fixture (100).

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