Method for machining rack through rack swing grinding machine

Abstract

The invention relates to a method for machining a rack through a rack swing grinding machine, and belongs to the technical field of rack machining equipment. According to the method for machining the rack through the rack swing grinding machine, the purpose of preventing rotation is achieved by pressing the anti-rotation clamping teeth into the workpiece. Therefore, the problem of poor quality of an existing machining mode is solved, and the rack swing grinding machine is particularly suitable for the use requirement of rack swing grinding machining.

Description

Technical Field

[0001] The invention relates to a method for machining a rack by utilizing a rack swing mill, and belongs to the technical field of rack machining equipment. Background Art

[0002] In the field of rack processing technology, rack swing mills are often used to complete rack processing. Existing rack swing mills, such as the invention patent with authorization announcement number CN105108019B, use a linear swing milling method to process the steering gear rack. It uses a workpiece clamping cylinder at one end and a fixed top at the other end to clamp the workpiece. While clamping the two ends of the workpiece, a clamping cylinder is also used to clamp the workpiece. Although the clamping device of the existing rack swing mill can meet the use needs to a certain extent, it still has the following problems: 1. The existing clamping method has the problem that the workpiece is very likely to rotate during processing due to insufficient clamping force.

[0003] 2. The existing clamping method uses a fixed top at one end and a workpiece clamping cylinder at the other end to fix the workpiece. Although the existing method can fix the workpiece, the force conditions at both ends are not completely the same during the processing of the workpiece, which leads to poor quality problems during the rack processing.

[0004] Therefore, it is necessary to develop a new method for processing racks to solve the problem of poor quality of existing clamping devices. Summary of the invention

[0005] The object of the present invention is to provide a clamping device for a rack swing mill with a compact structure and ingenious design to solve the problem of poor quality of existing clamping devices.

[0006] The technical solution of the present invention is: A method for machining a rack using a rack oscillating milling machine, characterized in that: the method for machining a rack using a rack oscillating milling machine comprises the following steps: 1. Place the workpiece: Place the workpiece on the lower die body of the rack swing mill clamping device; 2. Lock the workpiece: The left clamping group and the right clamping assembly clamp the workpiece from both ends. In this process, when the clamping pin clamps the workpiece from both ends, the anti-rotation teeth can press the two ends of the workpiece to deform it and finally get stuck inside the end of the workpiece. Then the clamping slider of the locking assembly clamps the workpiece from both sides. After the clamping slider clamps the workpiece, the locking cylinder pushes the locking slider forward. During the forward movement of the locking slider, the compressing inclined surface and the pressed inclined surface squeeze the clamping slider to lock it; 3. Processing workpiece: The rack swing rolling machine lifts the table to the swing rolling processing position; then the rack swing rolling machine drives the upper die to swing back and forth in a straight line; during the linear reciprocating swing of the upper die, the workpiece is repeatedly rolled by its own concave teeth; when the upper die is working, its working height is fixed, and the table gradually lifts the workpiece, gradually presses it into the upper die, and finally lifts the workpiece to a predetermined height position, so that the required tooth shape can be processed by the concave teeth in the upper die.

[0007] The clamping device of the rack swing roller comprises a table plate, a lower mold body, a left clamping assembly, a right clamping assembly and a locking assembly; the lower mold body is installed in the middle of the table plate; the left clamping assembly is installed on the table plate at one end of the lower mold body; the right clamping assembly is installed on the table plate at the other end of the lower mold body; the locking assembly is installed on the table plate between the lower mold body and the right clamping assembly; it is characterized in that: the left clamping assembly and the right clamping assembly both comprise a clamping cylinder and a clamping pin; the clamping pin is installed on the table plate through the clamping cylinder; and an anti-rotation tooth is provided at one end of the clamping pin.

[0008] The cross section of the anti-rotation tooth is a triangular structure.

[0009] The left clamping assembly and the right clamping assembly both include a guide seat; a guide seat is fixedly mounted on a table plate on one side of the clamping cylinder on the left clamping assembly and the right clamping assembly; a clamping pin on the clamping cylinder passes through the corresponding guide seat and is slidably connected thereto.

[0010] The clamping pin shaft is provided with a guide slide rail; the clamping pin shaft is slidably connected with the corresponding guide seat through the guide slide rail.

[0011] The locking assembly includes a locking base, a pressing slider, a pressing cylinder, a locking slider and a locking cylinder; the locking base is installed on the table; the pressing slider is symmetrically slid on the locking base through a guide rail; the pressing cylinder is installed on the locking base on one side of the pressing slider; the pressing cylinder is connected to the corresponding pressing slider; the locking slider is longitudinally slidably installed on the table outside the pressing slider; the locking cylinder is installed on the locking base at one end of the locking slider; the locking cylinder is connected to the corresponding locking slider; the locking slider is intermittently contacted and connected with the corresponding pressing slider.

[0012] The inner side surface of the clamping slide block is provided with a clamping arc opening.

[0013] The inner side of the locking slider is provided with a plurality of pressing inclined surfaces at intervals; the outer side of the pressing slider is provided with pressed inclined surfaces at intervals; and the pressing inclined surfaces are intermittently contacted and connected with the corresponding pressed inclined surfaces.

[0014] The advantages of the present invention are: The method for machining a rack by using a rack swing mill adopts a method of pressing an anti-rotation clamping tooth into a workpiece to achieve the purpose of anti-rotation, thereby solving the problem of poor quality existing in the existing machining method and being particularly suitable for the needs of rack swing mill machining. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the rack swing roller clamping device of the present invention; Figure 2 It is a schematic diagram of the top view of the structure of the rack swing roller clamping device of the present invention; Figure 3 It is a structural schematic diagram of the left clamping assembly of the present invention; Figure 4 for Figure 3 A schematic diagram of the enlarged structure at A in the middle; Figure 5 for Figure 3 Schematic diagram of the structure after removing the guide seat; Figure 6 for Figure 5 A schematic diagram of the enlarged structure at B in the middle; Figure 7 It is a structural schematic diagram of the right clamping assembly and the locking assembly of the present invention; Figure 8 It is a structural schematic diagram of the locking assembly of the present invention; Fig. 9 for Figure 8 Schematic diagram of the enlarged structure at C in the middle; Fig.10 for Figure 7 Schematic diagram of the enlarged structure at D in the middle; Fig.11 for Fig.10 Schematic diagram of the structure after removing the guide seat; Fig.12 It is a schematic diagram of the workpiece working state structure; Fig.13 for Fig.12 Schematic diagram of the enlarged structure at E in the middle.

[0016] In the figure: 1. table; 2. lower mold body; 3. left clamping assembly; 4. right clamping assembly; 5. locking assembly; 6. clamping cylinder; 7. clamping pin; 8. anti-rotation tooth; 9. guide seat; 10. guide rail; 11. locking base; 12. clamping slide; 13. clamping cylinder; 14. locking slide; 15. locking cylinder; 16. clamping arc; 17. pressing inclined surface; 18. pressed inclined surface; 19. workpiece. DETAILED DESCRIPTION

[0017] The method for machining a rack by using a rack swing milling machine uses a clamping device for the rack swing milling machine, comprising a table 1, a lower mold body 2, a left clamping assembly 3, a right clamping assembly 4 and a locking assembly 5 (see the attached manual). Figure 1 and 2 ).

[0018] A lower mold body 2 is mounted in the middle of the table 1; a workpiece 19 (rack) can be placed on the lower mold body 2 during operation.

[0019] A left clamping assembly 3 is mounted on the table 1 at one end of the lower mold body 2; a right clamping assembly 4 is mounted on the table 1 at the other end of the lower mold body 2 (see the attached manual). Figure 1 and 2 ).

[0020] The left clamping assembly 3 and the right clamping assembly 4 both include a clamping cylinder 6 and a clamping pin 7; the clamping pin 7 is mounted on the table 1 through the clamping cylinder 6; one end of the clamping pin 7 is provided with an anti-rotation tooth 8 (see the attached manual). Figure 6 and 11 The cross section of the anti-rotation tooth 8 is a triangular structure (see the attached diagram of the manual). Figure 6 ).

[0021] The left clamping assembly 3 and the right clamping assembly 4 both include a guide seat 9; the guide seat 9 is fixedly mounted on the table 1 on one side of the clamping cylinder 6 of the left clamping assembly 3 and the right clamping assembly 4; the clamping pin 7 on the clamping cylinder 6 passes through the corresponding guide seat 9 and is slidably connected thereto. A guide rail 10 is provided on the clamping pin 7; the clamping pin 7 is slidably connected to the corresponding guide seat 9 through the guide rail 10 (see the attached manual). Figure 4 , 6 and 11).

[0022] The purpose of setting the left clamping assembly 3 and the right clamping assembly 4 in this way is that during the working process, when the clamping pin 7 of the left clamping assembly 3 and the clamping pin 7 of the right clamping assembly 4 clamp the workpiece 19 from both ends, the anti-rotation clamping teeth 8 can press the two ends of the workpiece 19 to deform it and finally get stuck into the inside of the end of the workpiece 19. In this process, because the clamping pin 7 can only slide back and forth along the guide seat 9 under the action of the guide rail 10, when the workpiece 19 is driven by the torque to have a tendency to rotate, the guide seat 9 can hinder the rotation of the clamping pin 7 through the guide rail 10, so that the purpose of clamping the workpiece 19 and preventing it from rotating can be achieved.

[0023] A locking assembly 5 is installed on the table 1 between the lower mold body 2 and the right clamping assembly 4 (see the attached manual). Figure 1 and 2 The locking assembly 5 includes a locking base 11, a clamping slide 12, a clamping cylinder 13, a locking slide 14 and a locking cylinder 15 (see the attached manual). Figure 8 ).

[0024] A locking base 11 is mounted on the table 1; a pressing slider 12 is mounted on the locking base 11 symmetrically and slidably through a guide rail; a pressing cylinder 13 is mounted on the locking base 11 on one side of the pressing slider 12; the pressing cylinder 13 is connected to the corresponding pressing slider 12 (see the attached manual). Figure 8 ).

[0025] During operation, under the action of the clamping cylinder 13, the clamping slide block 12 can clamp and fix the workpiece 19 from both sides. The inner side of the clamping slide block 12 is provided with a clamping arc 16 (see the appendix of the specification). Figure 8 The purpose of setting the clamping arc 16 is to enable the clamping slider 12 to clamp and fix the workpiece 19 through the arc surface of the clamping arc 16 during operation, thereby avoiding the problem of relatively low clamping strength caused by the clamping slider 12 contacting the workpiece 19 through line contact.

[0026] A locking slider 14 is longitudinally slidably mounted on the table 1 outside the clamping slider 12; a locking cylinder 15 is mounted on the locking base 11 at one end of the locking slider 14; the locking cylinder 15 is connected to the corresponding locking slider 14; the locking slider 14 is intermittently contacted and connected to the corresponding clamping slider 12.

[0027] The inner side of the locking slider 14 is provided with a plurality of pressing inclined surfaces 17 at intervals; the outer side of the pressing slider 12 is provided with pressed inclined surfaces 18 at intervals; the pressing inclined surfaces 17 are intermittently contacted and connected with the corresponding pressed inclined surfaces 18 (see the appendix of the specification). Figure 8 and 9 ).

[0028] The purpose of setting the locking slider 14 and the pressing slider 12 in this way is that when working, after the pressing slider 12 clamps the workpiece 19 from both sides, the locking cylinder 15 pushes the locking slider 14 to move forward. During the forward movement of the locking slider 14, the pressing slider 12 is squeezed by the pressing inclined surface 17 and the pressed inclined surface 18, thereby further locking the pressing slider 12, so as to avoid the problem that when the pressing slider 12 is subjected to excessive force during work, it moves backward and causes the workpiece 19 to loosen.

[0029] The method for machining a rack using a rack swing mill comprises the following steps: 1. Place workpiece 19: Place the workpiece 19 on the lower die body 2 of the rack swing mill clamping device; 2. Locking workpiece 19: The left clamping assembly 3 and the right clamping assembly 4 operate to clamp the workpiece 19 from both ends. In this process, when the clamping pin 7 clamps the workpiece 19 from both ends, the anti-rotation teeth 8 can press the two ends of the workpiece 19 to deform it, and finally get stuck into the inside of the end of the workpiece 19. Then the clamping slider 12 of the locking assembly 5 operates to clamp the workpiece 19 from both sides. After the clamping slider 12 clamps the workpiece 19, the locking cylinder 15 pushes the locking slider 14 to move forward. During the forward movement of the locking slider 14, the clamping slider 12 is squeezed by the compressing inclined surface 17 and the pressed inclined surface 18 to lock it;

[0030] 3. Processing workpiece 19: The rack swing rolling machine lifts the table 1 to the swing rolling processing position; then the rack swing rolling machine drives the upper die to swing back and forth in a straight line; during the linear reciprocating swing of the upper die, the workpiece 19 is repeatedly rolled by its own concave teeth; when the upper die is working, its working height is fixed, and the table 1 gradually lifts the workpiece, gradually presses it into the upper die, and finally lifts the workpiece to a predetermined height position, so that the required tooth shape can be processed by the concave teeth in the upper die.

[0031] The method for machining a rack by using a rack swing mill adopts a method of pressing an anti-rotation clamping tooth into a workpiece to achieve the purpose of anti-rotation, thereby solving the problem of poor quality existing in the existing machining method and being particularly suitable for the needs of rack swing mill machining.

Claims

1. A method for machining a rack using a rack swing mill, characterized in that: The method for machining a rack using a rack swing mill comprises the following steps:

1. Place the workpiece (19): Placing the workpiece (19) on the lower die body (2) of the rack swing mill clamping device; 2. Locking the workpiece (19): The left clamping assembly (3) and the right clamping assembly (4) are actuated to clamp the workpiece (19) from both ends; during this process, when the clamping pin (7) clamps the workpiece (19) from both ends, the anti-rotation teeth (8) can press the two ends of the workpiece (19) to deform it and finally get stuck into the interior of the end of the workpiece (19); then the clamping slider (12) of the locking assembly (5) is actuated to clamp the workpiece (19) from both sides; after the clamping slider (12) clamps the workpiece (19), the locking cylinder (15) pushes the locking slider (14) to move forward; during the process of the locking slider (14) moving forward, the compressing inclined surface (17) and the pressed inclined surface (18) squeeze the clamping slider (12) to lock it; 3. Processing workpiece (19): The rack swing rolling machine lifts the table (1) to the swing rolling processing position; then the rack swing rolling machine drives the upper die to swing back and forth in a straight line; during the process of the upper die swinging back and forth in a straight line, the workpiece (19) is repeatedly rolled by the concave teeth provided by the upper die; when the upper die is working, its working height is fixed, and the table (1) gradually lifts the workpiece, gradually presses it into the upper die, and finally lifts the workpiece to a predetermined height position, so that the desired tooth shape can be processed by the concave teeth in the upper die.

2. A method for machining a rack using a rack swing mill according to claim 1, characterized in that: The clamping device of a rack swing mill comprises a table (1), a lower mold body (2), a left clamping assembly (3), a right clamping assembly (4) and a locking assembly (5); the lower mold body (2) is mounted in the middle of the table (1); the left clamping assembly (3) is mounted on the table (1) at one end of the lower mold body (2); the right clamping assembly (4) is mounted on the table (1) at the other end of the lower mold body (2); the locking assembly (5) is mounted on the table (1) between the lower mold body (2) and the right clamping assembly (4); the feature is that the left clamping assembly (3) and the right clamping assembly (4) both comprise a clamping cylinder (6) and a clamping pin (7); the clamping pin (7) is mounted on the table (1) via the clamping cylinder (6); and an anti-rotation tooth (8) is provided at one end of the clamping pin (7).

3. A method for machining a rack using a rack swing mill according to claim 2, characterized in that: The cross section of the anti-rotation latch tooth (8) is a triangular structure.

4. The clamping device of a rack swing mill according to claim 2, characterized in that: The left clamping assembly (3) and the right clamping assembly (4) both include a guide seat (9); a guide seat (9) is fixedly mounted on a table (1) on one side of a clamping cylinder (6) on the left clamping assembly (3) and the right clamping assembly (4); a clamping pin (7) on the clamping cylinder (6) passes through a corresponding guide seat (9) and is slidably connected thereto.

5. The clamping device of a rack swing mill according to claim 4, characterized in that: The clamping pin shaft (7) is provided with a guide slide rail (10); the clamping pin shaft (7) is slidably connected to the corresponding guide seat (9) via the guide slide rail (10).

6. The clamping device of a rack swing mill according to claim 2, characterized in that: The locking assembly (5) comprises a locking base (11), a pressing slider (12), a pressing cylinder (13), a locking slider (14) and a locking cylinder (15); the locking base (11) is mounted on the table (1); the pressing slider (12) is symmetrically slidably mounted on the locking base (11) via a guide rail; the pressing cylinder (13) is mounted on the locking base (11) on one side of the pressing slider (12); the pressing cylinder (13) is connected to the corresponding pressing slider (12); the locking slider (14) is longitudinally slidably mounted on the table (1) outside the pressing slider (12); the locking cylinder (15) is mounted on the locking base (11) at one end of the locking slider (14); the locking cylinder (15) is connected to the corresponding locking slider (14); the locking slider (14) is intermittently contact-connected with the corresponding pressing slider (12).

7. The clamping device of a rack swing mill according to claim 6, characterized in that: The inner side surface of the clamping slide block (12) is provided with a clamping arc opening (16).

8. The clamping device of a rack swing mill according to claim 6, characterized in that: The locking slider (14) is provided with a plurality of pressing inclined surfaces (17) at intervals on the inner side; the pressing slider (12) is provided with pressed inclined surfaces (18) at intervals on the outer side; and the pressing inclined surfaces (17) are intermittently contacted and connected with the corresponding pressed inclined surfaces (18).

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