A multi-wire cutting machine workpiece positioning tool and positioning method

Abstract

A multi-wire cutting machine workpiece positioning tool and positioning method, provided with a moving seat, a turning mechanism, a positioning and pressing mechanism and a vacuum adsorption mechanism; the moving seat is a frame structure, and the turning mechanism is equipped on the moving seat; the turning mechanism includes a turning cylinder and a turning table, the bottom of the turning cylinder is hingedly assembled on the moving seat, the end of the telescopic arm of the turning cylinder is hingedly assembled with the turning table, and the turning table is a square plate, which is assembled with the moving seat through a hinged seat installed on its bottom surface; the vacuum adsorption mechanism is provided with a vacuum base and a group of control valves arranged on the air path connected to the vacuum base, the vacuum base is a rectangular base fixed on the turning table, and its central axis in the length direction coincides with the diagonal of the turning table, and the positioning and pressing mechanism is arranged on the vacuum base; the present invention avoids the harm of the volatilization of the adhesive to the operator's body, reduces the workload of subsequent sheet cleaning, and achieves the purpose of improving work efficiency and reducing production costs.

Description

Technical Field

[0001] The invention relates to a workpiece positioning tool and a positioning method, in particular to a positioning tool and a positioning method suitable for bonding-free workpieces of a multi-wire cutting machine. Background Art

[0002] Multi-wire cutting is a new cutting method that uses high-speed reciprocating motion of metal wires to bring abrasives into the semiconductor processing area for grinding, and cuts hard and brittle materials such as semiconductors into hundreds of thin slices at a time. Before the multi-wire cutting machine cuts the material, it is necessary to pre-layout according to the size of the material block to be cut, the thickness and number of slices that can be cut from each block, and then manually use measuring tools and simple auxiliary tooling to place and position the material blocks on the material board, and then use adhesives to fix the material blocks on the material board of the multi-wire cutting machine. After the adhesive is completely cured, the material board with the material blocks is placed in the multi-wire cutting machine for cutting.

[0003] The positioning method of the material block of the multi-wire cutting machine mentioned above, when unloading after the cutting operation is completed, in order to avoid the cut material being damaged, the material plate is generally heated or boiled in water to soften the glue layer, and then the material is gently removed. Since there will be adhesive residue on the bonding surface of the removed material, it is necessary to carefully clean the residue with a blade, especially in the bonding process of some special material blocks, in order to avoid the equipment disconnection and shutdown caused by the falling of the material block during the cutting operation, it is necessary to use alkaline noodles, thin plates and other materials to adhere to the surrounding of the material block, thereby increasing the difficulty of the later material cleaning work; When bonding the material blocks, it is necessary to apply glue manually. Since the special glue is volatile, it will cause certain harm to human health. Different types of adhesives need to be selected according to the different properties of the material blocks to be cut. Because of the differences in their curing and softening times, it is difficult to ensure the consistency of the production rhythm. In addition, in the actual operation process, the positioning of the material blocks not only requires simulation layout drawings, measuring tools and simple auxiliary tooling, but also requires cutting shallow lines on the marble slab bonded above the material board as a reference benchmark. Since the operator's eyesight is highly concentrated for a long time, it leads to excessive fatigue and there are safety hazards. Summary of the invention

[0004] The present invention provides a multi-wire cutting machine workpiece positioning tool and positioning method, which aims to avoid the volatilization of adhesive to cause harm to the operator's body and reduce the workload of subsequent material cleaning through a non-bonding positioning method of the multi-wire cutting machine material block, so as to achieve the purpose of improving work efficiency and reducing production costs.

[0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] A multi-wire cutting machine workpiece positioning tooling is provided with a moving seat, a turning mechanism, a positioning and pressing mechanism and a vacuum adsorption mechanism; the moving seat is a frame structure, and the turning mechanism is equipped on the moving seat; the turning mechanism includes a turning cylinder and a turning workbench, the bottom of the turning cylinder is hingedly assembled on the bottom crossbeam of the moving seat frame, the end of the turning cylinder telescopic arm is hingedly assembled with the turning workbench, the turning workbench is a square plate placed on the moving seat, and is assembled with the moving seat through an articulated seat installed on its bottom surface, and the turning workbench can be rotated around the articulated seat within a range of 0 to 45 degrees under the drive of the turning cylinder Flip upward; the vacuum adsorption mechanism is provided with a vacuum base and a group of control valves arranged on the air path connected to the vacuum base, the vacuum base is a rectangular seat fixed on the flip workbench, and its length direction central axis coincides with the diagonal of the flip workbench, and a positioning and pressing mechanism is arranged on the vacuum base; the positioning and pressing mechanism is provided with a positioning component and a pressing component, and the positioning component cooperates with the flipping mechanism to realize the positioning and placement of the material block to be cut. After the positioning and placement of the material block to be cut is completed, the vacuum adsorption mechanism adsorbs and positions the material block, and then the pressing component presses and fixes the material block to be cut.

[0007] The above-mentioned multi-wire cutting machine workpiece positioning tooling, the positioning assembly includes a positioning base plate, a positioning base plate side stop column, a positioning base plate front stop column and a material block positioning pin, the positioning base plate is placed on a vacuum base, a group of transverse material stop bosses are provided on the positioning base plate, and several groups of material block positioning pins are installed on the positioning base plate; the positioning base plate side stop column is arranged on one side of the base plate, and is fixed to the flip workbench through a side stop column mounting seat; the positioning base plate front stop column is fixed on the vacuum base.

[0008] The above-mentioned multi-wire cutting machine workpiece positioning tooling has adsorption holes connected to the vacuum base on the positioning base plate, and at least two groups of adsorption holes are arranged between two laterally adjacent groups of material block positioning pins; and a laterally arranged cutting wire bow adapter groove is also provided on the positioning base plate.

[0009] The above-mentioned multi-wire cutting machine workpiece positioning tooling, the pressing assembly includes a group of pressing beams, a pressing beam clamp and two clamp bases arranged on the left and right; the pressing beam is in the shape of a horizontally arranged rectangular arch, the inner wall of its top crossbeam is a pressing working surface, and the two ends of the pressing beam are respectively pressed in the two clamp bases on the left and right by the pressing beam clamp; the clamp base is arranged longitudinally, and a rectangular long groove matching the two ends of the pressing beam is provided on the clamp base, a group of pressing beam guide columns is provided on the inner side of the rectangular long groove, and a clamp assembly hole is provided on the outer side of the rectangular long groove; the pressing beam clamp is a hook-type clamp placed in the clamp assembly hole, and a clamp stopper is provided on the side of each hook-type clamp.

[0010] The multi-wire cutting machine workpiece positioning fixture is provided with an elastic pad on the pressing working surface of the pressing beam.

[0011] The multi-wire cutting machine workpiece positioning fixture is provided with a cutting wire avoidance transverse groove on the pressure beam.

[0012] The multi-wire cutting machine workpiece positioning fixture is provided with two symmetrically arranged wedge-shaped guide surfaces on the upper end surface of the pressure beam guide column.

[0013] The multi-wire cutting machine workpiece positioning fixture is provided with a gasket on the bottom surface of the rectangular long groove of the fixture base.

[0014] A multi-wire cutting machine workpiece positioning method, using the multi-wire cutting machine workpiece positioning tooling to complete the workpiece non-bonding positioning operation, the specific operation steps are as follows:

[0015] a. Place the workpieces: place the blocks on the positioning base plate, place a row of blocks between two adjacent sets of blocking bosses, and place a block between two adjacent sets of block positioning pins;

[0016] b. The workpiece is flipped and positioned. The telescopic arm of the flip cylinder extends to drive the flip workbench to flip to a certain angle. The positioning base plate and the material blocks placed on the positioning base plate slide toward the lower corner of the vacuum base under the action of their own gravity. In this process, the side stopper of the positioning base plate and the front stopper of the positioning base plate first limit the position of the positioning base plate, and then the horizontal stopper boss on the positioning base plate limits the front and rear positions of each row of material blocks, and the left and right positions of each column of material blocks are limited by the material block positioning pins;

[0017] c. The material block is adsorbed and fixed. The vacuum adsorption mechanism is activated to adsorb and fix the positioned material block on the positioning bottom plate;

[0018] d. The turning workbench is reset, the telescopic arm of the turning cylinder is retracted, the turning workbench is reset to a horizontal position, and the positioning bottom plate and the block workpiece are in a horizontal state;

[0019] e. The workpiece is clamped and fixed, and each row of material blocks is pressed and fixed on the positioning bottom plate through the pressure beam, and the vacuum adsorption effect of the vacuum adsorption mechanism on the material blocks is released through the control valve;

[0020] f. The positioning base plate and the workpiece enter the multi-wire cutting area. The positioning workpiece is sent to the feeding port of the multi-wire cutting machine through the moving seat. The positioning base plate is transferred to the working table of the multi-wire cutting machine and fixedly installed to complete the workpiece positioning operation.

[0021] In the above multi-wire cutting machine workpiece positioning method, in step a, the turning angle of the turning table is 45°.

[0022] The invention provides a multi-wire cutting machine workpiece positioning tool and positioning method, which has the beneficial effects of: the positioning pressing mechanism and the vacuum adsorption mechanism can be driven by the flipping mechanism to realize upward flipping within the range of 0 to 45 degrees. Since the vacuum base in the vacuum adsorption mechanism is a rectangular base fixed on the flipping workbench, and the central axis of the vacuum base in the length direction coincides with the diagonal of the flipping workbench, and the positioning base plate in the positioning pressing mechanism is placed on the vacuum base, the positioning base plate and the material blocks placed on the positioning base plate slide toward the lower vertex direction of the vacuum base under the action of their own gravity as the flipping mechanism moves. In this process, the position of the positioning base plate is first limited by the side stopper columns and the front stopper columns of the positioning base plate, and then the front and rear positions of each row of material blocks are limited by the transverse stopper boss on the positioning base plate, and the left and right positions of each row of material blocks are limited by the material block positioning pins. The invention can also adsorb the material blocks on the positioning base plate by the action of the vacuum adsorption mechanism, and after the flipping mechanism drives the positioning pressing mechanism and the vacuum adsorption mechanism to reset, each row of material blocks is pressed and fixed by the pressure beam to complete the clamping and positioning of the material block workpiece. It can be seen that the present invention not only effectively avoids the harm to the health of operators caused by the volatilization of adhesive and reduces the workload of subsequent sheet cleaning, but also reduces the manual operation links through the cooperation of the flipping mechanism and the vacuum adsorption mechanism, thereby greatly improving production efficiency and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the workpiece positioning tooling of the multi-wire cutting machine of the present invention;

[0024] Figure 2 yes Figure 1 A-direction view;

[0025] Figure 3 It is a schematic diagram of the positioning and pressing mechanism;

[0026] Figure 4 yes Figure 3 B-direction view;

[0027] Figure 5 yes Figure 4 A top view of

[0028] Figure 6 1. It is a schematic diagram of the positioning base plate structure;

[0029] Figure 7 is a schematic diagram of the fixture base structure;

[0030] Figure 8 is a schematic diagram of the compression beam structure;

[0031] Fig. 9 It is a schematic diagram of the working state of the flip mechanism;

[0032] Fig.10It is a schematic diagram of the positioning and pressing mechanism in the multi-wire cutting working state.

[0033] The list of reference numbers in the figure is:

[0034] 1. Mobile seat, 1-1, roller;

[0035] 2. Turn over the cylinder;

[0036] 3. Turn over the workbench;

[0037] 4. Positioning and pressing mechanism, 4-1. Positioning base plate, 4-1-1. Adsorption hole, 4-1-2. Cutting line bow adapter groove, 4-3. Horizontal material blocking boss, 4-2. Material block positioning pin, 4-3. Pressing beam, 4-3-1. Cutting line avoidance horizontal groove, 4-4. Clamp base, 4-4-1. Pressing beam guide column, 4-4-2. Wedge-shaped guide surface, 4-4-3. Clamp assembly hole, 4-4-4. Rectangular long groove, 4-5. Positioning base plate side blocking column, 4-6. Side blocking column mounting seat, 4-7. Clamp block, 4-8. Pressing clamp, 4-9. Elastic pad, 4-10. Gasket, 4-11. Positioning base plate front blocking column;

[0038] 5. Vacuum adsorption mechanism, 5-1. Vacuum base, 5-2. Control valve;

[0039] 6. Material blocks. DETAILED DESCRIPTION

[0040] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0041] See Figure 1. Figure 2 The present invention provides a multi-wire cutting machine workpiece positioning tool, which is provided with a moving seat 1, a turning mechanism, a positioning and pressing mechanism 4 and a vacuum adsorption mechanism 5; the moving seat 1 is a frame structure, the turning mechanism is equipped on the moving seat 1, and rollers 1-1 are arranged at the four corners of the bottom of the moving seat frame; the turning mechanism includes a turning cylinder 2 and a turning workbench 3, the bottom of the turning cylinder 2 is hingedly assembled on the bottom crossbeam of the moving seat 1 frame, the end of the turning cylinder telescopic arm is hingedly assembled with the turning workbench 3, and the turning workbench 3 is a square placed on the moving seat 1 The turning plate is assembled with the moving seat 1 through the hinge seat installed on the bottom surface thereof. The turning table 3 can be turned upward around the hinge seat within the range of 0 to 45 degrees under the drive of the turning cylinder 2. The vacuum adsorption mechanism 5 is provided with a vacuum base 5-1 and a group of control valves 5-2 arranged on the air path connected to the vacuum base. The vacuum base 5-1 is a rectangular seat fixed on the turning table 3, and its central axis in the length direction coincides with the diagonal of the turning table. A positioning and pressing mechanism 4 is arranged on the vacuum base 5-1, and the control valve 5-2 is a two-position three-way manual valve.

[0042] See also Figure 3, Figure 4 , Figure 5 , Fig. 9 The multi-wire cutting machine workpiece positioning fixture described in the present invention has a positioning and pressing mechanism 4 which is provided with a positioning component and a pressing component. The positioning component cooperates with the flipping mechanism to realize the positioning and placement of the material block 6 to be cut. After the positioning and placement of the material block to be cut is completed, the vacuum adsorption mechanism 5 adsorbs and positions the material block 6. After the flipping mechanism is reset, the material block 6 to be cut is pressed and fixed by the pressing component.

[0043] See also Figure 3 , Figure 4 , Figure 5 , Figure 6 The multi-wire cutting machine workpiece positioning fixture of the present invention, the positioning components in the positioning and pressing mechanism 4 include a positioning base plate 4-1, a positioning base plate side stop column 4-5, a positioning base plate front stop column 4-11 and a material block positioning pin 4-2; the positioning base plate 4-1 is placed on the vacuum base 5-1, and a group of transverse material stop bosses 4-1-3 are provided on the positioning base plate 4-1, and the front and rear positions of each row of material blocks are limited by the transverse material stop bosses 4-1-3, and a plurality of groups of material block positioning pins 4-2 are installed on the positioning base plate 4-1, and the left and right positions of each row of material blocks are limited by the material block positioning pins 4-2. 1 is also provided with an adsorption hole 4-1-1 connected to the vacuum base 5-1 and a cutting wire bow adapter groove 4-1-2 arranged laterally, and at least two groups of the adsorption holes 4-1-1 are arranged between two groups of material block positioning pins 4-2 adjacent to each other laterally; the positioning base plate side stop column 4-5 is arranged on one side of the positioning base plate 4-1, and is fixed to the turning workbench 3 through the side stop column mounting seat 4-6; the positioning base plate front stop column 4-11 is fixed to the vacuum base 5-1; during the turning process of the turning workbench 3, the position of the positioning base plate 4-1 is limited by the positioning base plate side stop column 4-5 and the positioning base plate front stop column 4-11.

[0044] See also Figure 3 , Figure 4 , Figure 5 , Figure 7 , Figure 8The multi-wire cutting machine workpiece positioning fixture of the present invention has a material pressing assembly in its positioning and pressing mechanism 4, which includes a group of pressing beams 4-3, a pressing beam fixture 4-8 and two fixture bases 4-4 arranged on the left and right; the pressing beam 4-3 is in the shape of a rectangular arch arranged horizontally, and a cutting line avoiding transverse groove 4-3-1 is provided on the pressing beam 4-3. The inner wall of the top cross beam of the rectangular arch of the pressing beam 4-3 is a pressing working surface, and an elastic pad 4-9 is provided on the pressing working surface. The two ends of the pressing beam 4-3 are respectively pressed in the two fixture bases 4-4 on the left and right by the pressing beam fixture 4-8; the fixture base 4-4 is arranged longitudinally A rectangular long groove 4-4-4 cooperating with the two ends of the pressure beam 4-3 is provided on the clamp base 4-4, a gasket 4-10 is provided on the bottom surface of the rectangular long groove 4-4-4, a group of pressure beam guide columns 4-4-1 are provided on the inner side of the rectangular long groove 4-4-4, and two symmetrically arranged wedge-shaped guide surfaces 4-4-2 are provided on the upper end surface of the pressure beam guide column 4-4-1, and a clamp assembly hole 4-4-3 is provided on the outer side of the rectangular long groove 4-4-4; the pressure beam clamp 4-8 is a hook-type clamp placed in the clamp assembly hole 4-4-3, and a clamp stopper 4-7 is provided on the side of each hook-type clamp.

[0045] See also Fig. 9 , Fig.10 The multi-wire cutting machine workpiece positioning method of the present invention uses the multi-wire cutting machine workpiece positioning tooling to complete the workpiece non-bonding positioning operation, and the specific operation steps are as follows:

[0046] a. Place the workpieces: place the material block 6 on the positioning base plate, place a row of material blocks between two adjacent sets of material blocking bosses, and place a material block between two adjacent sets of material block positioning pins;

[0047] b. The workpiece is flipped and positioned. The telescopic arm of the flip cylinder 2 extends to drive the flip table 3 to flip upward by 45 degrees. The positioning base plate 4-1 and the material block 6 placed on the positioning base plate 4-1 slide toward the lower top angle of the vacuum base 5-1 under the action of their own gravity. In this process, the side stopper 4-5 of the positioning base plate and the front stopper 4-11 of the positioning base plate first limit the position of the positioning base plate 4-1, and then the transverse stopper boss 4-1-3 on the positioning base plate 4-1 limits the front and rear position of each row of material blocks, and the left and right position of each column of material blocks is limited by the material block positioning pin 4-2;

[0048] c. The material block is adsorbed and fixed. The vacuum adsorption mechanism 5 is activated to adsorb and fix the positioned material block 6 on the positioning bottom plate 4-1;

[0049] d. The turning workbench is reset, the telescopic arm of the turning cylinder 2 is retracted, the turning workbench 3 is reset to a horizontal position, and the positioning base plate 4-1 and the material block 6 workpiece are in a horizontal state;

[0050] e. The workpiece is clamped and fixed, and each row of material blocks is pressed and fixed on the positioning base plate 4-1 through the pressure beam 4-3, and the vacuum adsorption effect of the vacuum adsorption mechanism 5 on the material block 6 is released through the control valve 5-2;

[0051] f. The positioning base plate and the workpiece enter the multi-wire cutting area. The positioning workpiece is sent to the feeding port of the multi-wire cutting machine through the moving seat (1). The positioning base plate 4-1 is transferred to the working table of the multi-wire cutting machine and fixedly installed to complete the workpiece positioning operation.

Claims

1. A multi-wire cutting machine workpiece positioning tool, characterized in that: It is provided with a moving seat (1), a turning mechanism, a positioning and pressing mechanism (4) and a vacuum adsorption mechanism (5); the moving seat (1) is a frame structure, and the turning mechanism is mounted on the moving seat (1); the turning mechanism comprises a turning cylinder (2) and a turning workbench (3); the bottom of the turning cylinder (2) is hingedly mounted on the bottom crossbeam of the moving seat (1) frame, and the end of the telescopic arm of the turning cylinder is hingedly mounted on the turning workbench (3); the turning workbench (3) is a square plate placed on the moving seat (1), and is assembled with the moving seat (1) through a hinged seat mounted on its bottom surface; under the drive of the turning cylinder (2), the turning workbench (3) can be turned upward around the hinged seat within a range of 0 to 45 degrees; the vacuum adsorption mechanism (5) is provided with a moving seat (1), and a turning mechanism (4) is provided on the moving seat (1). The attachment mechanism (5) is provided with a vacuum base (5-1) and a group of control valves (5-2) arranged on the gas path connected to the vacuum base. The vacuum base (5-1) is a rectangular base fixed on the turning workbench (3), and its longitudinal central axis coincides with the diagonal of the turning workbench. A positioning and pressing mechanism (4) is arranged on the vacuum base (5-1); the positioning and pressing mechanism (4) is provided with a positioning component and a pressing component. The positioning component cooperates with the turning mechanism to realize the positioning and placement of the material block (6) to be cut. After the positioning and placement of the material block to be cut is completed, the vacuum adsorption mechanism (5) adsorbs and positions the material block (6). After the turning mechanism is reset, the material block (6) to be cut is pressed and fixed by the pressing component. The positioning assembly comprises a positioning base plate (4-1), a positioning base plate side stop column (4-5), a positioning base plate front stop column (4-11) and a material block positioning pin (4-2); the positioning base plate (4-1) is placed on a vacuum base (5-1), a group of transverse material stop bosses (4-1-3) are provided on the positioning base plate (4-1), and a plurality of groups of material block positioning pins (4-2) are installed on the positioning base plate (4-1); the positioning base plate side stop column (4-5) is arranged on one side of the positioning base plate (4-1) and is fixed to the turning workbench (3) via a side stop column mounting seat (4-6); the positioning base plate front stop column (4-11) is fixed to the vacuum base (5-1); The material pressing assembly comprises a group of pressing beams (4-3), a pressing beam clamp (4-8) and two clamp bases (4-4) arranged on the left and right. The pressing beam (4-3) is in the shape of a rectangular arch arranged transversely, and the inner wall of the top cross beam is a pressing working surface. The two ends of the pressing beam (4-3) are respectively pressed in the two clamp bases (4-4) on the left and right through the pressing beam clamp (4-8). The clamp base (4-4) is arranged longitudinally, and a rectangular long groove (4-4-4) matching with the two ends of the pressing beam (4-3) is provided on the clamp base (4-4), a group of pressing beam guide columns (4-4-1) is provided on the inner side of the rectangular long groove (4-4-4), and a clamp assembly hole (4-4-3) is provided on the outer side of the rectangular long groove (4-4-4). The pressing beam clamp (4-8) is a hook-type clamp placed in the clamp assembly hole (4-4-3), and a clamp stopper (4-7) is provided on the side of each hook-type clamp.

2. The multi-wire cutting machine workpiece positioning tool according to claim 1 is characterized in that: The positioning base plate (4-1) is provided with adsorption holes (4-1-1) that are in communication with the vacuum base (5-1), and at least two groups of adsorption holes (4-1-1) are provided between two groups of material block positioning pins (4-2) that are adjacent in the transverse direction; and the positioning base plate (4-1) is also provided with cutting wire bow adapting grooves (4-1-2) that are arranged in the transverse direction.

3. The multi-wire cutting machine workpiece positioning tool according to claim 1 is characterized in that: An elastic pad (4-9) is arranged on the pressing working surface of the pressing beam (4-3).

4. The multi-wire cutting machine workpiece positioning tool according to claim 3 is characterized in that: A cutting line avoiding transverse groove (4-3-1) is provided on the pressure beam (4-3).

5. The multi-wire cutting machine workpiece positioning tool according to claim 1 is characterized in that The upper end surface of the pressure beam guide column (4-4-1) is provided with two symmetrically arranged wedge-shaped guide surfaces (4-4-2).

6. The multi-wire cutting machine workpiece positioning tool according to claim 1, characterized in that A gasket (4-10) is provided on the bottom surface of the rectangular long groove (4-4-4) of the clamp base (4-4).

7. A workpiece positioning method using the multi-wire cutting machine workpiece positioning tooling according to any one of claims 1 to 6, characterized in that: Complete the non-bonding positioning operation of the workpiece. The specific steps are as follows: a. Placing the workpiece: placing the material block (6) on the positioning base plate, placing a row of material blocks between two adjacent sets of transverse material blocking bosses (4-1-3), and placing a material block between two adjacent sets of material block positioning pins (4-2); b. The workpiece is flipped and positioned. The telescopic arm of the flip cylinder (2) extends to drive the flip workbench (3) to flip at a certain angle. The positioning base plate (4-1) and the material blocks (6) placed on the positioning base plate (4-1) slide toward the lower top angle of the vacuum base (5-1) under the action of their own gravity. In this process, the position of the positioning base plate (4-1) is first limited by the side stopper columns (4-5) of the positioning base plate and the front stopper columns (4-11) of the positioning base plate. The front and rear positions of each row of material blocks are then limited by the lateral material stopper bosses (4-1-3) on the positioning base plate (4-1). The left and right positions of each row of material blocks are limited by the material block positioning pins (4-2). c. The material block is adsorbed and fixed. The vacuum adsorption mechanism (5) is activated to adsorb and fix the positioned material block (6) onto the positioning base plate (4-1); d. The turning workbench is reset, the telescopic arm of the turning cylinder (2) is retracted, the turning workbench (3) is reset to a horizontal position, and the positioning base plate (4-1) and the material block (6) are in a horizontal state; e. The workpiece is clamped and fixed, and each row of material blocks is pressed and fixed on the positioning base plate (4-1) by a pressure beam (4-3), and the vacuum adsorption effect of the vacuum adsorption mechanism (5) on the material block (6) is released by a control valve (5-2); f. The positioning base plate and the workpiece enter the multi-wire cutting area, and the positioning tooling is moved as a whole to the feed port of the multi-wire cutting machine through the moving seat (1). The positioning base plate (4-1) is moved to the workbench of the multi-wire cutting machine and fixedly installed to complete the workpiece positioning operation.

8. The workpiece positioning method according to claim 7, characterized in that: In step b, the turning angle of the turning workbench (3) is 45°.

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