Four-axis fixture and method for multi-angle machining of keyboard frames

Abstract

The present invention discloses a four-axis fixture and its method for multi-angle machining of a keyboard frame in the technical field of four-sided fixtures, including a bottom plate. One side of the top of the bottom plate is fixedly connected with a first fixed seat, and the top of the first fixed seat is fixedly connected with a first fixed frame. One side of the top of the bottom plate is fixedly connected with a second fixed seat, and the top of the second fixed seat is fixedly connected with a second fixed frame. One end of the first fixed frame is rotatably connected with a sliding plate, and one end of the second fixed frame is rotatably connected with a connecting frame. The present invention adopts a slidable sliding plate, which can be adjusted and clamped according to the size of the keyboard frame, so that it can be suitable for the clamping and fixing of keyboard frames of different sizes. The position of the sliding plate is fixed by a fixed force-relieving component, and the keyboard frame can be effectively fixed inside the first support seat and the second support seat. At the same time, when the sliding plate continues to be extruded by an external force after being clamped, the pressure will not act on the keyboard frame, effectively avoiding the problem of the keyboard frame being deformed by force extrusion.

Description

Technical Field

[0001] The present invention relates to the technical field of four-axis jigs, and particularly to a four-axis jig for multi-angle machining of a keyboard frame and a method thereof. Background Technique

[0002] A jig refers to a device used to fix a machining object during manufacturing and processing so that it remains fixed during the processing. Generally, the jigs used in manufacturing and processing are divided into three-axis jigs, four-axis jigs, and five-axis jigs. A four-axis jig refers to a jig that can move along the x-axis, y-axis, and z-axis and can rotate around the x-axis, and is widely used in the manufacturing and processing field.

[0003] When the existing keyboard frame is fixed on a four-axis jig for machining, due to the thin thickness of the keyboard frame, when clamping and fixing it on the four-axis jig, if the clamping force is too large, it is easy to cause the keyboard frame to deform. If the clamping force is insufficient, the keyboard frame will loosen on the four-axis jig. If there is a problem with the accuracy of the machining position during the processing, it is impossible to effectively solve the problem of ensuring the firm clamping of the keyboard frame by the four-axis jig while effectively avoiding the deformation of the keyboard frame.

[0004] Based on this, the present invention designs a four-axis jig for multi-angle machining of a keyboard frame and a method thereof to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a four-axis jig for multi-angle machining of a keyboard frame and a method thereof to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A four-axis jig for multi-angle machining of a keyboard frame, including a bottom plate. One side of the top end of the bottom plate is fixedly connected with a first fixing seat, and the top end of the first fixing seat is fixedly connected with a first fixing frame. One side of the top end of the bottom plate is fixedly connected with a second fixing seat, and the top end of the second fixing seat is fixedly connected with a second fixing frame. One end of the first fixing frame is rotatably connected with a sliding plate, and one end of the second fixing frame is rotatably connected with a connecting frame. One end of the sliding plate is fixedly connected with a sliding rod, and one end of the sliding rod is slidably connected with the connecting frame. One end of the sliding plate is provided with a first supporting seat, and one end of the connecting frame is slidably connected with a second supporting seat. A fixed unloading component is arranged on the sliding plate, and the fixed unloading component is used to fix the keyboard frame inside the first supporting seat and the second supporting seat, and fix the position of the sliding plate after fixation to prevent the external force from squeezing the sliding plate and deforming the keyboard frame.

[0007] As a further solution of the present invention, the fixed load - releasing component includes a connecting shaft. The connecting shaft is fixedly arranged at one end of the first support seat. One end of the connecting shaft is slidably connected to the sliding plate. One end of the first support seat is fixedly connected with a first spring for its reset. One end of the sliding plate is fixedly connected with a fixed frame. A transmission rod is slidably connected inside the fixed frame. The top end of the transmission rod is rotatably connected with a swing rod. The top end of the swing rod is rotatably connected to the bottom end of the first support seat. A clamping groove is formed on the sliding rod. The clamping groove is arranged directly below the transmission rod. A fixed piece is fixedly connected inside the clamping groove. One end of the fixed piece is rotatably connected with a turntable. A convex shaft is slidably arranged inside the turntable. One end of the convex shaft passes through the turntable and is arranged outside the turntable. A second spring for its reset is sleeved on the convex shaft. One end of the convex shaft is a smooth inclined surface. A pressing component is arranged on the first support seat. The pressing component is used to fix the keyboard frame on the first support seat in the vertical direction when the first support seat and the second support seat clamp the keyboard frame. A slot for docking with the transmission rod is formed at the upper end of the connecting frame. A plurality of connecting ports are arranged at equal intervals on one side of the connecting frame.

[0008] As a further solution of the present invention, the pressing component includes a positioning frame. The positioning frame is slidably arranged at one end of the first support seat. A slideway is formed on the sliding plate. The other end of the positioning frame slidably passes through the slideway. A connecting groove is formed on one side of the positioning frame. A plug block is slidably connected inside the connecting groove. One end of the plug block is fixedly connected with a third spring for its reset. An inclined groove is formed on the inner side of the slideway. One end of the plug block is slidably connected with the inclined groove.

[0009] As a further solution of the present invention, a plurality of pulleys are slidably arranged at equal intervals inside one end of the second support seat.

[0010] An anti - slip pad with a large coefficient of friction is fixedly connected to the bottom end of the positioning frame.

[0011] As a further solution of the present invention, a driving motor is fixedly connected to one end of the second fixing frame. The output end of the driving motor is fixedly connected to the outer wall of one end of the connecting frame.

[0012] As a further solution of the present invention, the convex shaft is slidably arranged inside the upper - oblique part of the turntable.

[0013] The using method of the four - axis fixture for multi - angle machining of the keyboard frame includes the following steps:

[0014] Step 1: Horizontally place one end of the keyboard frame to be machined against the second support seat. Push the sliding plate to slide so that the first support seat contacts and clamps the other end of the keyboard frame. Through the fixed load - releasing component, the position of the sliding plate at one end of the connecting frame is fixed to maintain the clamping state of the keyboard frame.

[0015] Step 2: Fix one end of the connecting frame and the second fixing frame by bolts.

[0016] Step 3: Adjust the position of the first fixing seat so that the first fixing frame and one end of the sliding plate are fixed by bolts, and fix the position of the first fixing seat at the upper end of the bottom plate at this time.

[0017] Step 4: Start the processing equipment to process the keyboard frame. After processing, slide the second support seat off, and then the processed keyboard frame can be taken out from the connecting frame.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. The present invention adopts a slidable sliding plate, which can be adjusted and clamped according to the size of the keyboard frame, so that it can be applied to the clamping and fixing of keyboard frames of different sizes, replacing the way of directly installing the keyboard frame inside the four-axis fixture. The position of the sliding plate is fixed by the fixed force-relieving component. In this way, not only can the keyboard frame be effectively fixed inside the first support seat and the second support seat, but also when the sliding plate continues to be extruded by an external force after being clamped, the pressure will not act on the keyboard frame, effectively avoiding the problem of the keyboard frame being deformed by force extrusion. Description of the Drawings

[0020] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 is Figure 1 an enlarged schematic diagram of part A in

[0022] Figure 3 is a schematic diagram of the structure of the fixed force-relieving component;

[0023] Figure 4 is Figure 3 an enlarged schematic diagram of part B in

[0024] Figure 5 is a schematic diagram of the cross-section structure of the sliding rod and the turntable;

[0025] Figure 6 is a schematic diagram of the structure of the sliding plate (hiding the positioning frame);

[0026] Figure 7 is a schematic diagram of the structure of the positioning frame;

[0027] Figure 8 is a flowchart of the method of the present invention.

[0028] In the drawings, the list of components represented by each reference numeral is as follows:

[0029] 1. Base plate; 2. First fixing seat; 3. First fixing frame; 4. Second fixing frame; 5. Second fixing seat; 6. Slide plate; 7. First support seat; 8. Connecting frame; 9. Second support seat; 10. Slide bar; 11. Fixed frame; 12. Connecting shaft; 13. First spring; 14. Connecting port; 15. Swing rod; 16. Slot; 17. Transmission rod; 18. Fixed piece; 19. Turntable; 20. Card slot; 21. Convex shaft; 22. Second spring; 23. Inclined groove; 24. Slideway; 25. Positioning frame; 26. Connecting groove; 27. Third spring; 28. Insert block; 29. Pulley. Detailed implementation mode

[0030] Please refer to Figure 1-8 , the present invention provides a technical solution: a four-axis fixture for multi-angle machining of a keyboard frame, including a base plate 1, one side of the top end of the base plate 1 is fixedly connected with a first fixing seat 2, the top end of the first fixing seat 2 is fixedly connected with a first fixing frame 3, one side of the top end of the base plate 1 is fixedly connected with a second fixing seat 5, the top end of the second fixing seat 5 is fixedly connected with a second fixing frame 4, one end of the first fixing frame 3 is rotatably connected with a slide plate 6, one end of the second fixing frame 4 is rotatably connected with a connecting frame 8, one end of the slide plate 6 is fixedly connected with a slide bar 10, one end of the slide bar 10 is slidably connected with the connecting frame 8, one end of the slide plate 6 is provided with a first support seat 7, one end of the connecting frame 8 is slidably connected with a second support seat 9, and a fixed unloading component is arranged on the slide plate 6. The fixed unloading component is used to fix the keyboard frame inside the first support seat 7 and the second support seat 9, and fix the position of the slide plate 6 after fixation to prevent the keyboard frame from being deformed by external force squeezing the slide plate 6;

[0031] When the above solution is put into actual use, one end of the keyboard frame to be processed is placed horizontally against the second support base 9, and the slide plate 6 is pushed to slide so that the first support base 7 contacts and clamps the other end of the keyboard frame. The slide plate 6 is fixed at one end of the connecting frame 8 through the fixed force relief component to maintain the clamping state of the keyboard frame. After the two ends of the keyboard frame to be processed are respectively clamped and fixed by the first support base 7 and the second support base 9, one end of the connecting frame 8 is fixedly connected to the second fixed frame 4, one end of the slide plate 6 is fixedly connected to the first fixed frame 3, and the first fixed seat 2 is fixed on the upper end of the bottom plate 1, then the fixation of the keyboard frame on the four-axis fixture can be completed. After the fixation is completed, the keyboard frame is processed by an external processing device. After the processing is completed, the second support base 9 is slid and stretched out from one end of the connecting frame 8, and after the clamping of the second support base 9 is released, the processed keyboard frame can be removed from the connecting frame 8. The present invention adopts the slidable slide plate 6, which can adjust and clamp according to the size of the keyboard frame, so that it can be suitable for the clamping and fixation of different sizes of keyboard frames. The position of the slide plate 6 is fixed by the fixed force relief component, so that not only can the keyboard frame be effectively fixed inside the first support base 7 and the second support base 9, but also when the slide plate 6 is continuously extruded by an external force after clamping, the pressure will not act on the keyboard frame, and the problem of the keyboard frame being deformed by force extrusion can be effectively avoided.

[0032] As a further solution of the present invention, the fixed force relief component includes a connecting shaft 12, the connecting shaft 12 is fixedly arranged at one end of the first support base 7, one end of the connecting shaft 12 is slidably connected to the slide plate 6, a first spring 13 for its reset is fixedly connected to one end of the first support base 7, a fixed frame 11 is fixedly connected to one end of the slide plate 6, a transmission rod 17 is slidably connected inside the fixed frame 11, a swing rod 15 is rotatably connected to the top end of the transmission rod 17, the top end of the swing rod 15 is rotatably connected to the bottom end of the first support base 7, a card slot 20 is formed on the slide rod 10, the card slot 20 is arranged directly below the transmission rod 17, a fixing piece 18 is fixedly connected inside the card slot 20, a turntable 19 is rotatably connected to one end of the fixing piece 18, a convex shaft 21 is slidably arranged inside the turntable 19, one end of the convex shaft 21 passes through the turntable 19 and is arranged outside the turntable 19, a second spring 22 for its reset is sleeved on the convex shaft 21, one end of the convex shaft 21 is a smooth inclined surface, a pressing component is arranged on the first support base 7, and the pressing component is used for fixing the keyboard frame on the first support base 7 in the vertical direction when the first support base 7 and the second support base 9 clamp the keyboard frame. A slot 16 for docking with the transmission rod 17 is formed at the upper end of the connecting frame 8, and a plurality of connecting ports 14 are arranged at equal intervals on one side of the connecting frame 8;

[0033] When the above solution is put into actual use, one end of the keyboard frame to be processed is placed horizontally against the second support seat 9. When the slide plate 6 is pushed to slide so that the first support seat 7 contacts the other end of the keyboard frame, when one end of the first support seat 7 slides to contact the keyboard frame, the slide plate 6 is continuously slid so that the first spring 13 is compressed and the first support seat 7 pushes the connecting shaft 12 to slide into the slide plate 6. At the same time, the swing rod 15 rotates so that the transmission rod 17 slides downward below the fixed frame 11. At this time, the transmission rod 17 is located above the slot 16. The first support seat 7 continues to slide so that the transmission rod 17 continues to slide downward. The transmission rod 17 contacts the convex shaft 21 on one side of the turntable 19. At this time, if the convex shaft 21 is aligned with the connection port 14, the transmission rod 17 will push the convex shaft 21 to slide to one side of the turntable 19 and insert it into the connection port 14. Through the docking of the convex shaft 21 and the connection port 14, the slide rod 10 and the connection frame 8 are fixed. If the convex shaft 21 is not aligned with the connection port 14 at this time, the transmission rod 17 applies a downward pressure on the convex shaft 21, causing the convex shaft 21 to drive the turntable 19 to rotate until the convex shaft 21 rotates to a position aligned with the connection port 14 and then inserts into the connection port 14 to fixedly connect the slide rod 10 and the connection frame 8. After being fixed, the transmission rod 17 cannot continue to press down. Under the reset elastic force of the first spring 13, an external force will be applied to the keyboard frame from one side of the first support seat 7 to fix the keyboard frame inside the first support seat 7 and the second support seat 9. The elastic force of the first spring 13 is not sufficient to cause deformation of the keyboard frame. At this time, the keyboard frame is fixed. Then, the slide plate 6 and the first fixing frame 3 are fixedly connected, and the position of the first fixing seat 2 on the upper end of the bottom plate 1 is adjusted so that when the first fixing seat 2 is fixed on the bottom plate 1, the keyboard frame is effectively clamped. At this time, the pressure of the first fixing frame 3 on the slide plate 6 will act on the convex shaft 21 and the connection port 14, and will not directly act on the keyboard frame, which can also effectively avoid the problem of pressure deformation of the keyboard frame during the alignment process.

[0034] As a further solution of the present invention, the pressing component includes a positioning frame 25. The positioning frame 25 is slidably arranged at one end of the first support seat 7. A slideway 24 is opened on the slide plate 6. The other end of the positioning frame 25 slides through the slideway 24. A connection groove 26 is opened on one side of the positioning frame 25. An insertion block 28 is slidably connected inside the connection groove 26. One end of the insertion block 28 is fixedly connected with a third spring 27 for its reset. An inclined groove 23 is opened on the inner side of the slideway 24. One end of the insertion block 28 is slidably connected with the inclined groove 23;

[0035] When the above solution is put into actual use, during the process of fixing the keyboard frame by the fixed load - unloading component, when the first support base 7 slides, the positioning frame 25 slides towards the skateboard 6 side. During the sliding process, due to the limiting effect of the inclined slot 23 on the insertion block 28, when the insertion block 28 drives the positioning frame 25 to slide along the inclined slot 23, it also slides downward. As the first support base 7 slides, the bottom end of the positioning frame 25 gradually contacts the top end of the keyboard frame, so that the positioning frame 25 fixes the keyboard frame inside the positioning frame 25 and the first support base 7 in the vertical direction, and the fixing effect on the keyboard frame is more stable.

[0036] As a further solution of the present invention, several pulleys 29 are slidably arranged inside one end of the second support base 9 at equal intervals;

[0037] When the above solution is put into actual use, the second support base 9 is in rolling contact with one end of the keyboard frame through the pulleys 29. In this way, when the second support base 9 is pulled out from the connecting frame 8 after processing, the rolling friction of the pulleys 29 is small, and the second support base 9 can be taken out with a small friction force with the keyboard frame, which is convenient for removal after processing.

[0038] The bottom end of the positioning frame 25 is fixedly connected with an anti - slip pad with a large coefficient of friction;

[0039] When the above solution is put into actual use, the anti - slip pad increases the friction force, making the fixing effect of the keyboard frame inside the positioning frame 25 and the first support base 7 more firm. At the same time, the anti - slip pad can reduce the possible wear when the keyboard frame contacts the positioning frame 25, and plays an effective protective role for the keyboard frame.

[0040] As a further solution of the present invention, one end of the second fixing frame 4 is fixedly connected with a driving motor, and the output end of the driving motor is fixedly connected with the outer wall of one end of the connecting frame 8;

[0041] When the above solution is put into actual use, the driving motor drives the connecting frame 8 to rotate, so that four - axis machining is realized during the processing, which is convenient for machining the keyboard frame.

[0042] As a further solution of the present invention, the convex shaft 21 is slidably arranged inside the upper - left part of the turntable 19;

[0043] When the above solution is put into actual use, when the transmission rod 17 presses down and contacts the convex shaft 21, the pressure acting on the convex shaft 21 can drive the turntable 19 to rotate. If the convex shaft 21 is located directly above the turntable 19, the pressure in the vertical direction may not be able to drive the turntable 19 to rotate in the set direction.

[0044] Usage method of a four - axis fixture for multi - angle machining of a keyboard frame, the method includes the following steps:

[0045] Step 1: Place one end of the keyboard frame to be processed against the second support seat 9 horizontally. Push the sliding plate 6 to slide so that the first support seat 7 contacts and clamps the other end of the keyboard frame. Fix the position of the sliding plate 6 at one end of the connecting frame 8 through the fixed force-relieving component to maintain the clamping state of the keyboard frame.

[0046] Step 2: Fix the connection between one end of the connecting frame 8 and the second fixing frame 4 with bolts.

[0047] Step 3: Adjust the position of the first fixing seat 2 so that the first fixing frame 3 is fixedly connected to one end of the sliding plate 6 with bolts, and fix the position of the first fixing seat 2 at the upper end of the bottom plate 1 at this time.

[0048] Step 4: Start the processing equipment to process the keyboard frame. After processing, slide the second support seat 9 off, and then the processed keyboard frame can be taken out from the connecting frame 8.

[0049] Working principle: Place one end of the keyboard frame to be processed against the second support seat 9 horizontally. Push the sliding plate 6 to slide so that the first support seat 7 contacts and clamps the other end of the keyboard frame. Fix the position of the sliding plate 6 at one end of the connecting frame 8 through the fixed force-relieving component to maintain the clamping state of the keyboard frame. After the two ends of the keyboard frame to be processed are respectively clamped and fixed by the first support seat 7 and the second support seat 9, fix the connection between one end of the connecting frame 8 and the second fixing frame 4, fix the connection between one end of the sliding plate 6 and the first fixing frame 3, and fix the first fixing seat 2 at the upper end of the bottom plate 1 to complete the fixation of the keyboard frame on the four-axis fixture. After fixation, process the keyboard frame with an external processing equipment. After processing, slide and stretch the second support seat 9 out from one end of the connecting frame 8. After disengaging from the clamping of the second support seat 9, the processed keyboard frame can be taken off from the connecting frame 8. The present invention adopts a slidable sliding plate 6, which can be adjusted and clamped according to the size of the keyboard frame, so that it can be applicable to the clamping and fixation of keyboard frames of different sizes. Fix the position of the sliding plate 6 through the fixed force-relieving component. In this way, not only can the keyboard frame be effectively fixed inside the first support seat 7 and the second support seat 9, but also when the sliding plate 6 continues to be extruded by an external force after clamping, the pressure will not act on the keyboard frame, effectively avoiding the problem of the keyboard frame being deformed by force extrusion.

Claims

1. A four-axis fixture for multi-angle machining of a keyboard frame, comprising a bottom plate (1), one side of the top end of the bottom plate (1) is fixedly connected with a first fixing seat (2), the top end of the first fixing seat (2) is fixedly connected with a first fixing frame (3), one side of the top end of the bottom plate (1) is fixedly connected with a second fixing seat (5), and the top end of the second fixing seat (5) is fixedly connected with a second fixing frame (4), characterized in that: One end of the first fixing bracket (3) is rotatably connected to a sliding plate (6), one end of the second fixing bracket (4) is rotatably connected to a connecting bracket (8), one end of the sliding plate (6) is fixedly connected to a sliding rod (10), one end of the sliding rod (10) is slidably connected to the connecting bracket (8), one end of the sliding plate (6) is provided with a first support seat (7), one end of the connecting bracket (8) is slidably connected to a second support seat (9), and a fixed unloading component is arranged on the sliding plate (6). The fixed unloading component is used to fix the keyboard frame inside the first support seat (7) and the second support seat (9), and fix the position of the sliding plate (6) after fixation to prevent the keyboard frame from deforming due to external force extrusion of the sliding plate (6); The fixed unloading component includes a connecting shaft (12). The connecting shaft (12) is fixedly arranged at one end of the first support seat (7). One end of the connecting shaft (12) is slidably connected to the sliding plate (6). One end of the first support seat (7) is fixedly connected to a first spring (13) for its reset. One end of the sliding plate (6) is fixedly connected to a fixed frame (11). A transmission rod (17) is slidably connected inside the fixed frame (11). The top end of the transmission rod (17) is rotatably connected to a swing rod (15). The top end of the swing rod (15) is rotatably connected to the bottom end of the first support seat (7). A card slot (20) is formed on the sliding rod (10). The card slot (20) is arranged directly below the transmission rod (17). A fixing piece (18) is fixedly connected inside the card slot (20). One end of the fixing piece (18) is rotatably connected to a turntable (19). A convex shaft (21) is slidably arranged inside the turntable (19). One end of the convex shaft (21) passes through the turntable (19) and is arranged outside the turntable (19). A second spring (22) for its reset is sleeved on the convex shaft (21). One end of the convex shaft (21) is a smooth inclined surface. A pressing component is arranged on the first support seat (7). The pressing component is used to fix the keyboard frame on the first support seat (7) from the vertical direction when the first support seat (7) and the second support seat (9) clamp the keyboard frame. A slot (16) for docking with the transmission rod (17) is formed at the upper end of the connecting bracket (8). A plurality of connecting ports (14) are arranged at equal intervals on one side of the connecting bracket (8); The pressing component includes a positioning frame (25). The positioning frame (25) is slidably arranged at one end of the first support seat (7). A sliding channel (24) is formed on the sliding plate (6). The other end of the positioning frame (25) slidably passes through the sliding channel (24). A connecting groove (26) is formed on one side of the positioning frame (25). A plug block (28) is slidably connected inside the connecting groove (26). One end of the plug block (28) is fixedly connected to a third spring (27) for its reset. An inclined slot (23) is formed on the inner side of the sliding channel (24). One end of the plug block (28) is slidably connected to the inclined slot (23).

2. The four-axis fixture for multi-angle machining of a keyboard frame according to claim 1, wherein: A plurality of pulleys (29) are slidably arranged at equal intervals inside one end of the second support seat (9).

3. The four-axis fixture for multi-angle machining of the keyboard frame according to claim 1, wherein: The bottom end of the positioning frame (25) is fixedly connected with an anti-slip pad with a large coefficient of friction.

4. The four-axis fixture for multi-angle machining of a keyboard frame according to claim 1, wherein: One end of the second fixing frame (4) is fixedly connected with a driving motor, and the output end of the driving motor is fixedly connected with the outer wall of one end of the connecting frame (8).

5. The four-axis fixture for multi-angle machining of a keyboard frame according to claim 1, wherein: The convex shaft (21) is slidably arranged inside the upper oblique side of the turntable (19).

6. Method for using a four-axis fixture for multi-angle machining of a keyboard frame, including the four-axis fixture for multi-angle machining of a keyboard frame according to any one of the above claims 1-5, characterized in that, The method comprises the following steps: Step 1: Horizontally place one end of the keyboard frame to be processed against the second support seat (9), push the sliding plate (6) to slide so that the first support seat (7) contacts and clamps the other end of the keyboard frame, and fix the position of the sliding plate (6) at one end of the connecting frame (8) through the fixed force-relieving component to maintain the clamping state of the keyboard frame. Step 2: Bolt-fix one end of the connecting frame (8) and the second fixing frame (4). Step 3: Adjust the position of the first fixing seat (2) so that the first fixing frame (3) is bolt-fixedly connected with one end of the sliding plate (6), and fix the position of the first fixing seat (2) at the upper end of the bottom plate (1) at this time. Step 4: Start the processing equipment to process the keyboard frame. After the processing is completed, slide the second support seat (9) off, and the processed keyboard frame can be taken out from the connecting frame (8).

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