A system and method for continuous processing of metal parts

Abstract

The application discloses a kind of continuity processing fixture system and method of metal parts, including initial processing fixture, fixture tool connecting seat, workpiece processing fixture and horizontal fixture, the initial processing fixture is set to the front of the fixture tool connecting seat, the workpiece processing fixture is set to the back of the fixture tool connecting seat, the horizontal fixture is set to the upper surface of the fixture tool connecting seat, the horizontal fixture includes horizontal processing fixture main body, part connecting boss, pressing block connecting column, and the part connecting boss is fixed on the horizontal processing fixture main body.The application can clamp the workpiece or part being processed, three fixtures are arranged in one machine tool, after processing, the workpiece or part is installed, processed and disassembled in the same numerical control machine tool according to the processing steps, and the worker does not need to go back and forth between multiple numerical control machine tools for handling and operation, so the processing efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of metalworking fixture technology, and more particularly to a continuous machining fixture system and method for metal parts. Background Technology

[0002] The technical shortcomings of existing metal parts processing methods include: When machining metal using CNC machine tools, fixtures are needed to clamp the workpiece or part to be machined, and then the workpiece or part is machined. Each time, only one side of the workpiece or part can be machined. When multiple sides need to be machined, multiple CNC machine tools are used, with fixtures set in each machine tool. Then, the workpiece or part is installed, machined and disassembled one by one in multiple CNC machine tools according to the machining steps. The operator needs to travel back and forth between multiple CNC machine tools to carry and operate, resulting in low processing efficiency. Each CNC machine tool can only process one surface before needing to be replaced, resulting in low utilization of the CNC machine tools. Because the machining errors of multiple CNC machine tools are different, the errors accumulated after processing by multiple CNC machine tools will result in the error of the final machined part being the sum of the errors of multiple CNC machine tools. Although the error of each CNC machine tool meets the standard, the sum of the errors often exceeds the standard, resulting in poor machining accuracy. Summary of the Invention

[0003] Based on the technical problems existing in the background technology, the present invention proposes a method for a continuous machining fixture system for metal parts.

[0004] This invention proposes a continuous machining fixture system for metal parts, comprising an initial machining fixture, a fixture-tooling connecting seat, a workpiece machining fixture, and a horizontal fixture. The initial machining fixture is disposed on the front side of the fixture-tooling connecting seat, the workpiece machining fixture is disposed on the rear side of the fixture-tooling connecting seat, and the horizontal fixture is disposed on the upper surface of the fixture-tooling connecting seat. The horizontal fixture includes a horizontal machining fixture body, a part connecting boss, and a clamping block connecting column. The part connecting boss is fixed to the horizontal machining fixture body, and the clamping block connecting column is fixed to the part connecting boss.

[0005] Furthermore, the initial machining fixture is provided with initial assembly clearance grooves on both sides, and the upper and lower parts of the initial machining fixture are provided with limiting clamping mechanisms. A side limiting fixing pin is provided on one side of the initial machining fixture, and a side ball head movable pin is provided on the other side of the initial machining fixture. An upper ball head movable pin is provided between the limiting clamping mechanisms in the upper part of the initial machining fixture, and a lower limiting fixing pin is provided between the limiting clamping mechanisms in the lower part of the initial machining fixture.

[0006] Furthermore, the top of the side ball joint movable pin is spherical, and a side positioning blind hole is provided on the lower side of the initial assembly clearance groove on the right side of the initial machining fixture, and the bottom of the side ball joint movable pin is ball-jointed to the side positioning blind hole.

[0007] Furthermore, the fixture connecting seat includes a fixture connecting seat body, the front, back, and top surfaces of which are provided with a plurality of connecting holes for connecting fixtures, and a fixture connecting base is fixedly connected to the bottom of the fixture connecting seat body. The first base connecting block is disposed on the front side of the tooling connecting base, and the first base connecting block is connected to both the tooling connecting base and the machine tool connecting base by bolts. The second chassis connecting block is disposed on the side of the tooling connecting base, and the second chassis connecting block is connected to the tooling connecting base and the machine tool connecting base by bolts. The machine tool connecting turntable is fixedly connected to the bottom of the machine tool connecting base.

[0008] Furthermore, the upper surface of the fixture connecting seat body is provided with several horizontal fixture connecting holes for connecting the top horizontal fixture.

[0009] Furthermore, the workpiece machining fixture includes a workpiece machining fixture body, which has a protruding workpiece connecting platform. The workpiece connecting platform is provided with a first inner hole expansion clamp for inserting into the inner hole of the workpiece and clamping it. A first workpiece fixing pin is provided on the workpiece connecting platform on the lower side of the internal expansion clamp. A first workpiece assembly clearance groove is provided on the right side of the main body of the workpiece machining fixture, and a second workpiece fixing pin is provided on the workpiece connecting platform below the first workpiece assembly clearance groove. The inner hole expansion clamp has a first workpiece connecting hole and a second workpiece connecting hole respectively provided on the workpiece connecting platform on both the left and right sides. A first auxiliary connecting pin is provided on the edge of the workpiece connecting platform outside the first workpiece connecting hole. The first central workpiece connection hole is located in the middle of the workpiece machining fixture body.

[0010] Furthermore, the first inner hole expansion clamp, the second inner hole expansion clamp, the third inner hole expansion clamp, and the fourth inner hole expansion clamp are fixed in a parallelogram array on the workpiece connecting table.

[0011] Furthermore, the connecting boss of the part includes, from left to right, a dovetail connecting part, a left channel part, a central arc-shaped part, a right arc-shaped channel part, and a right circular end.

[0012] Furthermore, the clamping block connecting post includes a first clamping block connecting post and a second clamping block connecting post. The first clamping block connecting post is connected to the right circular end, and the second clamping block connecting post is connected to the rear edge of the right arc-shaped channel.

[0013] A method for continuous machining of metal parts, comprising a continuous machining fixture system for metal parts, and further comprising the following steps: S1: The initial process blank metal raw material is installed on the initial processing fixture, and the CNC machine tool processes the initial process blank metal raw material into a second process metal workpiece; S2: Remove the second-process metal workpiece, which has been machined on the front side, from the initial machining fixture, and install the second-process metal workpiece onto the workpiece machining fixture, with the machined surface of the second-process metal workpiece facing the workpiece machining fixture during installation. The new initial process blank metal raw material is mounted onto the initial processing fixture. A CNC machine tool processes the initial process blank metal raw material on the initial machining fixture into a second process metal workpiece. At the same time, the CNC machine tool processes the second-process metal workpiece on the workpiece processing fixture into a third-process metal workpiece; S3: Remove the finished metal workpiece from the workpiece processing fixture and install it onto the horizontal fixture, with the machined surface of the workpiece facing the horizontal fixture. The second-process metal workpiece, with its surface finished, is removed from the initial machining fixture and then mounted onto the workpiece machining fixture, with the machined surface of the second-process metal workpiece facing the workpiece machining fixture. The new initial process blank metal raw material is mounted onto the initial processing fixture. A CNC machine tool processes the initial process blank metal raw material on the initial machining fixture into a second process metal workpiece. Simultaneously, the CNC machine tool processes the second-process metal workpiece on the workpiece machining fixture into a third-process metal workpiece. At the same time, the CNC machine tool processes the metal workpiece of the third process on the horizontal fixture into finished metal parts; S4: Remove the finished metal parts from the horizontal fixture. The finished metal parts are now unloaded. Then, repeat step S3 until all metal parts are finished.

[0014] The beneficial effects of this invention are: This invention relates to a continuous machining fixture system and method for metal parts. When machining metal using a CNC machine tool, the workpiece or part is clamped and then machined. Multiple surfaces of the workpiece or part can be machined at a time, with multiple surfaces machined using a single CNC machine tool. Three fixtures are set up within one machine tool. After each machining operation, the workpiece or part is installed, machined, and disassembled within the same CNC machine tool according to the machining steps. Operators do not need to travel between multiple CNC machine tools for handling and operation, resulting in high machining efficiency. Each CNC machine tool can process three sides without needing to be replaced, resulting in high utilization of the CNC machine tools. Since the machining error of the same CNC machine tool is constant, the error will not accumulate after machining three times on the same CNC machine tool. The final error of the machined part is the error of one CNC machine tool, resulting in high machining accuracy. Attached Figure Description

[0015] Figure 1 This is a front view schematic diagram of the initial machining fixture of the continuous machining fixture system for metal parts according to the present invention; Figure 2 This is a three-dimensional structural diagram of the initial machining fixture of the continuous machining fixture system for metal parts according to the present invention; Figure 3 This is a schematic diagram of the first lower limit clamping mechanism of the initial machining fixture of the continuous machining fixture system for metal parts of the present invention. Figure 4 This is a three-dimensional structural diagram of the fixture tooling connection seat of the continuous machining fixture system for metal parts according to the present invention; Figure 5 This is a side view of the fixture connection seat of the continuous machining fixture system for metal parts according to the present invention. Figure 6 This is a schematic diagram of the main structure of the fixture tooling connection seat of the continuous machining fixture system for metal parts according to the present invention; Figure 7 This is a schematic diagram of the tooling connection base and machine tool connection base structure of the continuous machining fixture system for metal parts according to the present invention; Figure 8 This is a front view of the workpiece machining fixture of the continuous machining fixture system for metal parts according to the present invention. Figure 9 This is a three-dimensional structural diagram of the workpiece machining fixture of the continuous machining fixture system for metal parts according to the present invention; Figure 10 This is a top view of the horizontal fixture of the continuous machining fixture system for metal parts according to the present invention. Figure 11This is a three-dimensional structural diagram of the horizontal fixture of the continuous machining fixture system for metal parts according to the present invention; Figure 12 This is a top view of the part-connecting boss of the horizontal fixture in the continuous machining fixture system for metal parts of the present invention. Figure 13 This is a three-dimensional structural diagram of the continuous machining fixture system for metal parts according to the present invention; Figure 14 This is a three-dimensional structural diagram of the continuous machining fixture system for metal parts according to the present invention; Figure 15 This is a flowchart of the continuous processing method for the metal parts described in this invention.

[0016] In the diagram: 100, initial machining fixture; 120, limiting clamping connecting 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, gripper connecting bolt; 128, half-head connecting cylinder; 129, limiting clamping gripper; 131, side limiting 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; 151, first initial assembly clearance groove; 152, second initial assembly clearance groove; 161, the... 162. First auxiliary positioning slot; 163. Second auxiliary positioning slot; 164. Third auxiliary positioning slot; 165. Second main positioning slot; 166. Fourth auxiliary positioning slot; 167. Fifth auxiliary positioning slot; 168. Sixth auxiliary positioning slot; 200. Fixture tooling connecting seat; 210. Fixture tooling connecting seat body; 211. Vertical tooling connecting hole; 212. Tooling auxiliary connecting hole; 213. Horizontal tooling connecting hole; 220. Tooling connecting base; 230. Machine tool connecting base; 231. Positioning slot; 240. Machine tool connecting turntable; 251. First base connecting block; 252. Second chassis connecting block; 300. Workpiece processing fixture; 310. Workpiece processing fixture body; 311. Workpiece connection... 321. First internal hole expansion clamp; 322. Second internal hole expansion clamp; 323. Third internal hole expansion clamp; 324. Fourth internal hole expansion clamp; 331. First workpiece fixing pin; 332. Second workpiece fixing pin; 333. Third workpiece fixing pin; 334. Fourth workpiece fixing pin; 351. First auxiliary connecting pin; 352. Second auxiliary connecting pin; 361. First workpiece connecting hole; 362. Second workpiece connecting hole; 363. Third workpiece connecting hole; 364. Fourth workpiece connecting hole; 365. Fifth workpiece connecting hole; 366. Sixth workpiece connecting hole; 371. First central workpiece connecting hole; 372. Second central workpiece connecting hole; 400. Horizontal fixture; 410. Horizontal machining fixture The components include: 420. Main body; 421. Part connecting boss; 422. Dovetail connector; 423. Left channel; 424. Central arc-shaped part; 425. Right arc-shaped channel; 426. Right round end; 431. First part auxiliary connecting hole; 432. Second part auxiliary connecting hole; 433. Third part auxiliary connecting hole; 434. Fourth part auxiliary connecting hole; 435. Fifth part auxiliary connecting hole; 436. Sixth part auxiliary connecting hole; 437. Seventh part auxiliary connecting hole; 441. First clamping block connecting post; 442. Second clamping block connecting post; 451. First part positioning pin; 452. Second part positioning pin; 453. Third part positioning pin; 454. Fourth part positioning pin; 455. Fifth part positioning pin.456. Sixth part locating pin; 457. Seventh part locating pin; 458. Eighth part locating pin. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0018] like Figure 1-15 As shown, a continuous processing method for metal parts includes the following steps: S1: The initial process blank metal raw material is installed on the initial processing fixture 100, and the CNC machine tool processes the initial process blank metal raw material into a second process metal workpiece; S2: Remove the second-process metal workpiece, which has been machined on the front side, from the initial machining fixture 100, and install the second-process metal workpiece onto the workpiece machining fixture 300, with the machined surface of the second-process metal workpiece facing the workpiece machining fixture 300 during installation. The new initial process blank metal raw material is mounted onto the initial processing fixture 100. A CNC machine tool processes the initial process blank metal raw material on the initial machining fixture 100 into a second process metal workpiece. At the same time, the CNC machine tool processes the second-process metal workpiece on the workpiece processing fixture 300 into a third-process metal workpiece; S3: Remove the finished metal workpiece from the workpiece processing fixture 300 and install it onto the horizontal fixture 400, with the machined surface of the workpiece facing the horizontal fixture 400 during installation. The second-process metal workpiece, after surface finishing, is removed from the initial machining fixture 100 and installed onto the workpiece machining fixture 300, with the machined surface of the second-process metal workpiece facing the workpiece machining fixture 300. The new initial process blank metal raw material is mounted onto the initial processing fixture 100. A CNC machine tool processes the initial process blank metal raw material on the initial machining fixture 100 into a second process metal workpiece. Simultaneously, the CNC machine tool processes the second-process metal workpiece on the workpiece processing fixture 300 into a third-process metal workpiece. At the same time, the CNC machine tool processes the metal workpiece of the third process on the horizontal fixture 400 into finished metal parts; S4: Remove the finished metal parts from the horizontal fixture 400. The finished metal parts are now unloaded. Then, repeat step S3 until all metal parts are finished. Example

[0019] like Figure 1-14 As shown, the present invention provides a technical solution: a continuous machining fixture system for metal parts, comprising an initial machining fixture 100, a fixture tooling connecting seat 200, a workpiece machining fixture 300, and a horizontal fixture 400. The initial machining fixture 100 is disposed on the front side of the fixture tooling connecting seat 200, the workpiece machining fixture 300 is disposed on the rear side of the fixture tooling connecting seat 200, and the horizontal fixture 400 is disposed on the upper surface of the fixture tooling connecting seat 200. The horizontal fixture 400 includes a horizontal machining fixture body 410, a part connecting boss 420, and a clamping block connecting column. The part connecting boss 420 is fixed on the horizontal machining fixture body 410, and the clamping block connecting column is fixed on the part connecting boss 420.

[0020] The initial processing fixture 100 is provided with initial assembly clearance grooves on both sides. The upper and lower parts of the initial processing fixture 100 are provided with limiting clamping mechanisms. A side limiting fixing pin 131 is provided on one side of the initial processing fixture 100, and a side ball head movable pin 143 is provided on the other side. An upper ball head movable pin is provided between the limiting clamping mechanisms in the upper part of the initial processing fixture 100, and a lower limiting fixing pin is provided between the limiting clamping mechanisms in the lower part of the initial processing fixture 100.

[0021] Furthermore, the top of the side ball joint movable pin 143 is spherical, and a side positioning blind hole is provided on the lower side of the initial assembly clearance groove on the right side of the initial machining fixture 100. The bottom of the side ball joint movable pin 143 is ball-jointed to the side positioning blind hole.

[0022] Furthermore, the limiting 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 sequentially disposed on the upper part of the initial processing fixture 100. 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 sequentially disposed on the lower part of the initial processing fixture 100.

[0023] Furthermore, a first lower limit fixing pin 132 is provided between the first lower limit clamping mechanism 121 and the second lower limit clamping mechanism 122, and a second lower limit fixing pin 133 is provided between the second lower limit clamping mechanism 122 and the third lower limit clamping mechanism 123. A first lower limit fixing pin 132 is provided 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 provided between the second upper limit clamping mechanism 125 and the third upper limit clamping mechanism 126.

[0024] 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.

[0025] Furthermore, the first lower limit clamping mechanism 121 includes a limit clamping connecting block 120, a half-head connecting cylinder 128, a limit clamping claw 129, and a 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 cylinder 128 is fixedly connected to the limit clamping connecting block 120. The claw connecting bolt 127 passes through the limit clamping claw 129 and is threaded into the half-head connecting cylinder 128.

[0026] Furthermore, when the clamping bolt 127 is in the unscrewed state, the half-head connecting cylinder 128 and the limiting clamping claw 129 rotate and contact each other; when the clamping bolt 127 is in the tightened state, the half-head connecting cylinder 128 and the limiting clamping claw 129 engage and connect with each other.

[0027] Furthermore, it also includes a first main positioning slot 161, a first auxiliary positioning slot 162, a second auxiliary positioning slot 163, a third auxiliary positioning slot 164, a second main positioning slot 165, a fourth auxiliary positioning slot 166, a fifth auxiliary positioning slot 167, and a sixth auxiliary positioning slot 168 arranged in a clockwise, centrally symmetrical rectangular array.

[0028] Furthermore, the initial assembly clearance groove is a rounded rectangular groove used to accommodate the assembler's hand during assembly. The initial assembly clearance groove includes a first initial assembly clearance groove 151 disposed on the left edge of the initial processing fixture 100 and a second initial assembly clearance groove 152 disposed on the right edge of the initial processing fixture 100.

[0029] The fixture connecting base 200 includes a fixture connecting base body 210, which has several connecting holes on its front, back, and top surfaces for connecting fixtures. A fixture connecting base 220 is fixedly connected to the bottom of the fixture connecting base body 210. The first base connecting block 251 is disposed on the front side of the tooling connecting base 220, and the first base connecting block 251 is connected to the tooling connecting base 220 and the machine tool connecting base 230 by bolts. The second chassis connecting block 252 is disposed on the side of the tooling connecting base 220, and the second chassis connecting block 252 is connected to the tooling connecting base 220 and the machine tool connecting base 230 by bolts. The machine tool connecting turntable 240 is fixedly connected to the bottom of the machine tool connecting base 230.

[0030] Furthermore, the main body 210 of the fixture tooling connecting seat is square box-shaped.

[0031] Furthermore, the front and rear sides of the fixture tooling connecting seat body 210 are provided with a plurality of vertical tooling connecting holes 211 for connecting vertical fixture tools, and the vertical tooling connecting holes 211 are arranged in a rectangular array.

[0032] The machining fixture is connected to the vertical tooling connection hole 211 by a connecting pin. The vertical tooling connection holes 211 arranged in a rectangular array are both axially symmetrical and centrally symmetrical with each other. This satisfies the connection of axially symmetrical and centrally symmetrical connecting pins, and facilitates the installation of ordinary fixtures, axially symmetrical fixtures and centrally symmetrical fixtures.

[0033] Furthermore, the tooling auxiliary connection hole 212 is provided on the fixture tooling connection seat body 210 inside the vertical tooling connection hole 211.

[0034] The middle part of the machining fixture is connected to the tooling auxiliary connection hole 212 via a connecting pin to enhance the fixation stability.

[0035] Furthermore, the upper surface of the fixture tooling connecting seat body 210 is provided with a plurality of horizontal tooling connecting holes 213 for connecting the top horizontal fixture tooling.

[0036] Furthermore, the machine tool connecting turntable 240 is connected to a CNC machine tool.

[0037] Furthermore, the tooling connecting base 220 and the machine tool connecting base 230 are the same in shape and size and fit tightly together.

[0038] Furthermore, the tooling connection base 220 and the machine tool connection base 230 are connected by the first base connection block 251 and the second chassis connection block 252.

[0039] Furthermore, the first base connecting block 251 and the second chassis connecting block 252 are perpendicular to each other.

[0040] The first base connecting block 251 and the second chassis connecting block 252 are arranged in different directions, so that the connection between the tooling connecting base 220 and the machine tool connecting base 230 is stable.

[0041] Furthermore, the machine tool connecting base 230 is provided with positioning grooves 231 on both the front and rear for mounting and positioning with the CNC machine tool.

[0042] When the CNC machine tool drives the machine tool connecting turntable 240 to rotate, it is positioned by the positioning groove 231.

[0043] The workpiece machining fixture 300 includes a workpiece machining fixture body 310, which has a protruding workpiece connecting platform 311. The workpiece connecting platform 311 is provided with a first inner hole expansion clamp 321 for inserting into the inner hole of the workpiece and clamping it. A first workpiece fixing pin 331 is provided on the workpiece connecting table 311 on the lower side of the first inner hole expansion clamp 321. A first workpiece assembly clearance groove 341 is provided on the right side of the workpiece machining fixture body 310, and a second workpiece fixing pin 332 is provided on the workpiece connecting table 311 below the first workpiece assembly clearance groove 341. The first workpiece connecting hole 361 and the second workpiece connecting hole 362 are respectively provided on the workpiece connecting platform 311 on the left and right sides of the first inner hole expansion clamp 321. A first auxiliary connecting pin 351 is provided on the edge of the workpiece connecting platform 311 outside the first workpiece connecting hole 361. The first central workpiece connection hole 371 is located in the middle of the workpiece processing fixture body 310.

[0044] Furthermore, the first inner hole expansion clamp 321, the second inner hole expansion clamp 322, the third inner hole expansion clamp 323 and the fourth inner hole expansion clamp 324 are fixed in a parallelogram array on the workpiece connecting platform 311.

[0045] Furthermore, a third workpiece fixing pin 333 and a fourth workpiece fixing pin 334 are provided on the workpiece connecting table 311 at a position 180° rotated around the center point of the workpiece processing fixture body 310, where the first workpiece fixing pin 331 and the second workpiece fixing pin 332 are located.

[0046] Furthermore, a second workpiece assembly clearance groove 342 is provided on the workpiece connecting table 311 at a position 180° rotated around the center point of the workpiece processing fixture body 310.

[0047] Furthermore, a second auxiliary connecting pin 352 is provided on the workpiece connecting table 311 at a position 180° rotated around the center point of the workpiece processing fixture body 310.

[0048] Furthermore, a third workpiece connection hole 363 is provided on the workpiece connecting platform 311 inside the second workpiece fixing pin 332.

[0049] Furthermore, the first workpiece connection hole 361, the second workpiece connection hole 362, and the third workpiece connection hole 363 are provided with a fourth workpiece connection hole 364, a fifth workpiece connection hole 365, and a sixth workpiece connection hole 366 on the workpiece connection table 311 at a position 180° rotated around the center point of the workpiece processing fixture body 310.

[0050] Furthermore, the first central workpiece connection hole 371 and the second central workpiece connection hole 372 are symmetrically arranged in the middle of the workpiece processing fixture body 310.

[0051] The first inner hole expansion clamp 321 is circular with several slits at the top and an integral circular structure at the bottom. A threaded hole is provided in the center, and a bolt is connected inside the threaded hole. The diameter of the end of the bolt is smaller than that of the threaded hole, while the diameter of the middle part is larger than that of the threaded hole. Rotating the bolt causes it to gradually penetrate into the first inner hole expansion clamp 321. The bolt will squeeze the slit part of the first inner hole expansion clamp 321, causing the first inner hole expansion clamp 321 to expand. The workpiece is provided with an inner hole corresponding to the first inner hole expansion clamp 321. The first inner hole expansion clamp 321 clamps the workpiece from inside the inner hole of the workpiece.

[0052] The horizontal clamp 400 includes, Horizontal machining fixture body 410 for connecting to the upper surface of external equipment Part connecting boss 420 for connecting parts A clamping block connecting post used to connect the clamping block to the outside of the part through the inner hole. The part connecting boss 420 is fixed to the horizontal machining fixture body 410, and a number of part positioning pins are respectively disposed on the upper surface edge of the part connecting boss 420. The clamping block connecting column is fixed to the part connecting boss 420.

[0053] Furthermore, the connecting boss 420 of the component includes, from left to right, a dovetail connecting portion 421, a left channel portion 422, a central arc-shaped portion 423, a right arc-shaped channel portion 424, and a right circular end 425.

[0054] Furthermore, the clamping block connecting post includes a first clamping block connecting post 441 and a second clamping block connecting post 442. The first clamping block connecting post 441 is connected to the right circular end 425, and the second clamping block connecting post 442 is connected to the rear edge of the right arc-shaped channel portion 424.

[0055] Furthermore, the component positioning pins include a first component positioning pin 451, a second component positioning pin 452, a third component positioning pin 453, a fourth component positioning pin 454, a fifth component positioning pin 455, a sixth component positioning pin 456, a seventh component positioning pin 457, and an eighth component positioning pin 458. The eighth component positioning pin 458 and the first component positioning pin 451 are respectively connected to the two protruding ends of the dovetail connecting portion 421. The second component positioning pin 452 and the third component positioning pin 453 are sequentially connected to the rear edge of the left channel portion 422. The seventh component positioning pin 457 and the sixth component positioning pin 456 are sequentially connected to the front edge of the left channel portion 422. The fifth component positioning pin 455 and the fourth component positioning pin 454 are sequentially connected to the front edge of the right arc-shaped channel portion 424.

[0056] Furthermore, it also includes, The first auxiliary connection hole 431 is located on the rear side of the left channel section 422. The second auxiliary connection hole 432 is located on the rear side of the central arc-shaped part 423. The third auxiliary connection hole 433 is located on the rear side of the right arc-shaped channel section 424. The fourth auxiliary connection hole 434 is located on the front side of the dovetail connector 421. The fifth auxiliary connection hole 435 is located on the front side of the left channel section 422. The sixth auxiliary connection hole 436 and the seventh auxiliary connection hole 437 are arranged sequentially from left to right on the front side of the right arc-shaped channel 424.

[0057] Furthermore, the dovetail connector 421 is circular in shape, and two protrusions are provided at the ends of the dovetail connector 421.

[0058] Furthermore, the front edge of the central arc-shaped portion 423 is arc-shaped and the curvature gradually decreases from the middle to both sides.

[0059] Furthermore, the front edge of the right arc-shaped channel portion 424 is arc-shaped and the curvature gradually increases from the middle to both sides.

[0060] Working principle: This continuous machining fixture system for metal parts 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. The left edge of the metal workpiece is placed against the side limit fixing pin 131, so that the position of the metal workpiece is fixed. 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 inside of the side ball head movable pin, which completely fixes the entire workpiece, improves the processing accuracy and reduces the processing error.

[0061] When the operator installs and removes the metal workpiece, the left finger is placed in the first initial assembly clearance groove 151 and the right finger is placed in the second initial assembly clearance groove 152. This eliminates the possibility that the operator's hand will be caught between the metal workpiece and the initial processing fixture 100, and the hand will not exert force on the initial processing fixture 100, thus eliminating the impact of the operation on the positioning accuracy of the metal workpiece.

[0062] The first main positioning slot 161, the first auxiliary positioning slot 162, the second auxiliary positioning slot 163, the third auxiliary positioning slot 164, the second main positioning slot 165, the fourth auxiliary positioning slot 166, the fifth auxiliary positioning slot 167, and the sixth auxiliary positioning slot 168, arranged in a clockwise centrally symmetrical rectangular array, can provide auxiliary positioning for metal workpieces after drilling on a CNC machine tool. Furthermore, the clockwise centrally symmetrical rectangular array arrangement allows the metal workpiece blank to be machined into a centrally symmetrical workpiece, so that two identical or symmetrical workpieces can be subsequently machined.

[0063] Tighten the clamping jaw 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 the processing.

[0064] The front and rear sides of the fixture connecting body 210 are provided with several vertical fixture connecting holes 211 for connecting vertical fixtures. The vertical fixtures can be installed on the front and rear sides of the fixture connecting body 210 through the vertical fixture connecting holes 211. The upper surface of the fixture connecting body 210 is provided with several horizontal fixture connecting holes 213 for connecting horizontal fixtures. The horizontal fixtures can be installed on the top of the fixture connecting body 210 through the horizontal fixture connecting holes 213. In this way, the metal workpiece to be processed can be fixed on the top of the fixture connecting body 210 and processed by a CNC machine tool. The machine tool connecting turntable is used to connect with the CNC machine tool, so that the CNC machine tool can drive the square box-type fixture tooling fixing and rotating mechanism to rotate as a whole or remain stationary. Metal workpieces are machined using CNC machine tools, and fixtures are used in metal processing. The square box-type fixture fixing and rotating mechanism of this application has three surfaces where fixtures can be installed. If a metal workpiece needs to be processed in multiple steps, the same CNC machine tool can be used. Three fixtures can be installed on a fixture connecting seat body 210, and multiple steps are processed in the same CNC machine tool. Each different CNC machine tool has slight differences in error. Using the same CNC machine tool can avoid the accumulation of errors, improve processing accuracy, and eliminate the need to move the workpiece between multiple CNC machine tools, reducing processing time and efficiency.

[0065] By setting the first inner hole expansion clamp, the second inner hole expansion clamp, the third inner hole expansion clamp and the fourth inner hole expansion clamp, the workpiece will be clamped from the inside to the outside through the inner hole of the workpiece, without affecting the outer surface processing of the workpiece, leaving all the space for the outer surface processing of the workpiece. The first workpiece fixing pin, the second workpiece fixing pin, the third workpiece fixing pin, the fourth workpiece fixing pin, the first auxiliary connecting pin, and the second auxiliary connecting pin can fix different areas of the workpiece being processed, ensuring the stability of the workpiece being processed, and fixing the processing waste on the metal workpiece processing fixture after the workpiece is cut. The first workpiece connecting hole, the second workpiece connecting hole, the third workpiece connecting hole, the fourth workpiece connecting hole, the fifth workpiece connecting hole, the sixth workpiece connecting hole, the first central workpiece connecting hole, and the second central workpiece connecting hole can fix more positions of the workpiece to be processed by connecting pins or connecting rods when more areas need to be processed. The metal workpiece processing fixture is 180° centrally symmetrical, which can be used to process two identical or symmetrical workpieces at the same time, thus increasing processing efficiency many times over.

[0066] By setting the part connecting boss 420, the part is fixed to the part connecting boss 420 and processed by CNC machine tool. The part is not supported by the edge but by the bottom. There is no obstruction, which facilitates the processing of the part. By setting the first clamping block connecting post 441, the second clamping block connecting post 442, the first part positioning pin 451, the second part positioning pin 452, the third part positioning pin 453, the fourth part positioning pin 454, the fifth part positioning pin 455, the sixth part positioning pin 456, the seventh part positioning pin 457 and the eighth part positioning pin 458, the part is clamped from the inside out from the inner hole of the part, which will not affect the outer surface processing of the part and leave space for the outer surface processing of the part. The dovetail connecting portion 421, the central arc-shaped portion 423, the right arc-shaped channel portion 424, and the right round end 425 of the part connecting boss 420 have smooth surfaces. The central arc-shaped portion 423 and the right round end 425 protrude from the entire part connecting boss 420, and the exposed space is larger than that of a straight-shaped clamp, which facilitates the processing of the parts fixed on it.

[0067] This invention relates to a continuous machining fixture system and method for metal parts. When machining metal using a CNC machine tool, the workpiece or part is clamped and then machined. Multiple surfaces of the workpiece or part can be machined at a time, with multiple surfaces machined using a single CNC machine tool. Three fixtures are set up within one machine tool. After each machining operation, the workpiece or part is installed, machined, and disassembled within the same CNC machine tool according to the machining steps. Operators do not need to travel between multiple CNC machine tools for handling and operation, resulting in high machining efficiency. Each CNC machine tool can process three sides without needing to be replaced, resulting in high utilization of the CNC machine tools. Since the machining error of the same CNC machine tool is constant, the error will not accumulate after machining three times on the same CNC machine tool. The final error of the machined part is the error of one CNC machine tool, resulting in high machining accuracy. Example

[0068] like Figure 1-15 As shown, a continuous processing method for metal parts includes the following steps: S11: Place the initial process blank metal raw material onto the surface of the initial processing fixture 100; S12: Bring the left and lower edges of the blank metal raw material close to the side limiting fixing pin 131, the first lower limiting fixing pin 132 and the second lower limiting fixing pin 133. S12: Press the upper edge and right edge of the blank metal material against the first upper ball head movable pin 141, the second upper ball head movable pin 142 and the side ball head movable pin 143. S13: Tighten the first lower limit clamping mechanism 121, the second lower limit clamping mechanism 122 and 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; S14: A CNC machine tool processes the initial process blank metal raw material into a second process metal workpiece; Preferably, in step S13, a torque wrench is used to tighten the material, and the torque of the torque wrench is 30 N·m.

[0069] S21: Remove the second-process metal workpiece, which has been machined on the front side, from the initial machining fixture 100, and install the second-process metal workpiece onto the workpiece machining fixture 300. During installation, the machined surface of the metal workpiece in the second process faces the workpiece machining fixture 300. S22: Fix the metal workpiece of the second process by the first workpiece fixing pin 331 and the second workpiece fixing pin 332; S23: Tighten the first inner hole expansion clamp 321, the second inner hole expansion clamp 322, the third inner hole expansion clamp 323 and the fourth inner hole expansion clamp 324; S24: Tighten the second workpiece fixing pin 332 and the fourth workpiece fixing pin 334; S25: Install the new initial process blank metal raw material onto the initial processing fixture 100. S26: The CNC machine tool processes the initial process blank metal raw material on the initial processing fixture 100 into a second process metal workpiece. At the same time, the CNC machine tool processes the second-process metal workpiece on the workpiece processing fixture 300 into a third-process metal workpiece; Preferably, in step S24, a torque wrench is used to tighten the material, and the torque of the torque wrench is 9 N·m.

[0070] S31: Remove the two finished metal workpieces from the workpiece processing fixture 300 and stack them on the horizontal fixture 400, with the machined surfaces of the two workpieces facing the horizontal fixture 400 during installation. S32: Insert the fourth part positioning pin 454 and the seventh part positioning pin 457 to fix the two stacked third process metal workpieces. S33: Insert two fixed bushings into the inner hole of the metal workpiece in the third process; S33: Insert the handle through the two third-process metal workpieces and thread it onto the second clamping block connecting post 442 and tighten it; S34: Remove the finished metal workpiece for the second process from the initial machining fixture 100 and install it onto the workpiece machining fixture 300, with the machined surface of the workpiece facing the workpiece machining fixture 300 during installation. S35: Install the new initial process blank metal raw material onto the initial processing fixture 100. S36: The CNC machine tool processes the initial process blank metal raw material on the initial processing fixture 100 into a second process metal workpiece. Simultaneously, the CNC machine tool processes the second-process metal workpiece on the workpiece processing fixture 300 into a third-process metal workpiece. At the same time, the CNC machine tool processes the metal workpiece of the third process on the horizontal fixture 400 into finished metal parts; Preferably, in step S33, the fixing bushing is tightened using a torque wrench with a torque of 4 N·m.

[0071] S4: Remove the finished metal parts from the horizontal fixture 400. The finished metal parts are now unloaded. Then, repeat step S3 until all metal parts are finished.

[0072] Regarding the procurement of machine tools, one optional CNC machine tool for this invention is the Makino a61nx model. Other models of machine tools or combined machining centers can also be used. CNC machine tools or machining centers are not within the scope of protection claimed by this invention, and CNC machine tools or machining centers do not limit the protection of this invention in any way.

[0073] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A continuous machining fixture system for metal parts, characterized in that, The fixture includes an initial machining fixture (100), a fixture connecting seat (200), a workpiece machining fixture (300), and a horizontal fixture (400). The initial machining fixture (100) is disposed on the front of the fixture connecting seat (200), the workpiece machining fixture (300) is disposed on the rear of the fixture connecting seat (200), and the horizontal fixture (400) is disposed on the upper surface of the fixture connecting seat (200). The horizontal fixture (400) includes a horizontal machining fixture body (410), a part connecting boss (420), and a clamping block connecting post. The part connecting boss (420) is fixed on the horizontal machining fixture body (410), and the clamping block connecting post is fixed on the part connecting boss (420). The initial processing fixture (100) is provided with initial assembly clearance grooves on both sides. The initial processing fixture (100) is provided with limiting clamping mechanisms at both the upper and lower parts. A side limiting fixing pin (131) is provided on one side of the initial processing fixture (100), and a side ball head movable pin (143) is provided on the other side of the initial processing fixture (100). An upper ball head movable pin is provided between the limiting clamping mechanisms at the upper part of the initial processing fixture (100), and a lower limiting fixing pin is provided between the limiting clamping mechanisms at the lower part of the initial processing fixture (100). The top of the side ball joint movable pin (143) is spherical. A side positioning blind hole is provided on the lower side of the initial assembly clearance groove on the right side of the initial machining fixture (100). The bottom of the side ball joint movable pin (143) is ball-jointed to the side positioning blind hole. The limiting 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) sequentially disposed on the upper part of the initial processing fixture (100). 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) sequentially disposed on the lower part of the initial processing fixture (100). A first lower limit fixing pin (132) is provided between the first lower limit clamping mechanism (121) and the second lower limit clamping mechanism (122), and a second lower limit fixing pin (133) is provided between the second lower limit clamping mechanism (122) and the third lower limit clamping mechanism (123). It also includes a first main positioning slot (161), a first auxiliary positioning slot (162), a second auxiliary positioning slot (163), a third auxiliary positioning slot (164), a second main positioning slot (165), a fourth auxiliary positioning slot (166), a fifth auxiliary positioning slot (167), and a sixth auxiliary positioning slot (168) arranged in a clockwise, centrally symmetrical rectangular array. The initial assembly clearance groove is a rounded rectangular groove used to accommodate the assembler's hand during assembly. The initial assembly clearance groove includes a first initial assembly clearance groove (151) disposed on the left edge of the initial processing fixture (100) and a second initial assembly clearance groove (152) disposed on the right edge of the initial processing fixture (100). The fixture connecting seat (200) includes a fixture connecting seat body (210). The front, back and top surfaces of the fixture connecting seat body (210) are provided with a plurality of connecting holes for connecting fixtures. The fixture connecting base (220) is fixedly connected to the bottom of the fixture connecting seat body (210). The first base connecting block (251) is disposed on the front side of the tooling connecting base (220), and the first base connecting block (251) is connected to the tooling connecting base (220) and the machine tool connecting base (230) respectively by bolts. The second chassis connecting block (252) is disposed on the side of the tooling connecting base (220), and the second chassis connecting block (252) is connected to the tooling connecting base (220) and the machine tool connecting base (230) by bolts. The machine tool connecting turntable (240) is fixedly connected to the bottom of the machine tool connecting base (230); The upper surface of the fixture tooling connecting seat body (210) is provided with several horizontal tooling connecting holes (213) for connecting the top horizontal fixture tooling. The main body (210) of the fixture tooling connector is provided with a plurality of vertical tooling connection holes (211) for connecting vertical fixture tools on both the front and the back. The vertical tooling connection holes (211) are arranged in a rectangular array. The workpiece processing fixture (300) includes a workpiece processing fixture body (310), which has a protruding workpiece connecting platform (311). The workpiece connecting platform (311) is provided with a first inner hole expansion clamp (321) for inserting into the inner hole of the workpiece and clamping the workpiece. A first workpiece fixing pin (331) is provided on the workpiece connecting table (311) on the lower side of the first inner hole expansion clamp (321). A first workpiece assembly clearance groove (341) is provided on the right side of the workpiece processing fixture body (310), and a second workpiece fixing pin (332) is provided on the workpiece connecting table (311) below the first workpiece assembly clearance groove (341). The first workpiece connecting hole (361) and the second workpiece connecting hole (362) are respectively provided on the workpiece connecting platform (311) on the left and right sides of the first inner hole expansion clamp (321). The first auxiliary connecting pin (351) is provided on the edge of the workpiece connecting platform (311) outside the first workpiece connecting hole (361). The first central workpiece connection hole (371) is located in the middle of the workpiece processing fixture body (310).

2. The continuous machining fixture system for metal parts according to claim 1, characterized in that, The first inner hole expansion clamp (321), the second inner hole expansion clamp (322), the third inner hole expansion clamp (323) and the fourth inner hole expansion clamp (324) are fixed in a parallelogram array on the workpiece connecting table (311).

3. The continuous machining fixture system for metal parts according to claim 1, characterized in that, The connecting boss (420) of the part includes, from left to right, a dovetail connecting part (421), a left channel part (422), a central arc-shaped part (423), a right arc-shaped channel part (424), and a right round end (425).

4. The continuous machining fixture system for metal parts according to claim 3, characterized in that, The clamping block connecting column includes a first clamping block connecting column (441) and a second clamping block connecting column (442). The first clamping block connecting column (441) is connected to the right circular end (425), and the second clamping block connecting column (442) is connected to the rear edge of the right arc-shaped channel (424).

5. A method for continuous processing of metal parts, characterized in that, The continuous machining fixture system for metal parts as described in claim 1 further includes the following steps: S11: Place the initial process blank metal raw material onto the surface of the initial processing fixture (100); S12: Bring the left and lower edges of the blank metal raw material close to the side limiting fixing pin (131), the first lower limiting fixing pin (132), and the second lower limiting fixing pin (133). S12: Bring the upper and right edges of the blank metal material close to the first upper ball head movable pin (141), the second upper ball head movable pin (142), and the side ball head movable pin (143). S13: Tighten the first lower limit clamping mechanism (121), the second lower limit clamping mechanism (122) and 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); S14: A CNC machine tool processes the initial process blank metal raw material into a second process metal workpiece; S21: Remove the second-process metal workpiece, which has been machined on the front side, from the initial machining fixture (100), and install the second-process metal workpiece onto the workpiece machining fixture (300). During installation, the machined surface of the metal workpiece in the second process faces the workpiece machining fixture (300). S22: Fix the metal workpiece of the second process by the first workpiece fixing pin (331) and the second workpiece fixing pin (332); S23: Tighten the first inner hole expansion clamp (321), the second inner hole expansion clamp (322), the third inner hole expansion clamp (323) and the fourth inner hole expansion clamp (324). S24: Tighten the second workpiece fixing pin (332) and the fourth workpiece fixing pin (334). S25: Install the new initial process blank metal raw material onto the initial processing fixture (100). S26: The CNC machine tool processes the initial process blank metal raw material on the initial machining fixture (100) into a second process metal workpiece. At the same time, the CNC machine tool processes the second-process metal workpiece on the workpiece processing fixture (300) into a third-process metal workpiece; S31: Remove the two third-process metal workpieces with the finished surface from the workpiece processing fixture (300) and stack the two third-process metal workpieces on the horizontal fixture (400), with the machined surfaces of the two third-process metal workpieces facing the horizontal fixture (400) during installation. S32: Insert the fourth part positioning pin (454) and the seventh part positioning pin (457) to fix the two stacked third process metal workpieces; S33: Insert two fixed bushings into the inner hole of the metal workpiece in the third process; S33: Insert the handle through the two third-process metal workpieces and thread it onto the second clamping block connecting post (442) and tighten it; S34: Remove the second-process metal workpiece with the completed surface finish from the initial processing fixture (100) and install the second-process metal workpiece onto the workpiece processing fixture (300), with the machined surface of the second-process metal workpiece facing the workpiece processing fixture (300) during installation. S35: Install the new initial process blank metal raw material onto the initial processing fixture (100). S36: The CNC machine tool processes the initial process blank metal raw material on the initial machining fixture (100) into a second process metal workpiece. Simultaneously, the CNC machine tool processes the second-process metal workpiece on the workpiece processing fixture (300) into a third-process metal workpiece. At the same time, the CNC machine tool processes the metal workpiece of the third process on the horizontal fixture (400) into finished metal parts; S4: Remove the finished metal parts from the horizontal fixture (400). The finished metal parts are now unloaded. Then, repeat step S3 until all metal parts are finished.

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