A method of assembling a timepiece

Abstract

The application discloses a kind of clock assembly method, comprising first step: wheel train assembly: S11, fixed seat body, S12, assemble second transition wheel, S13, assemble first transition wheel, S14, assemble riding wheel, S15, assemble balance wheel, S16, assemble rotary body, S17, assemble pressure plate tooling;Second step: rotary body rotates mechanism brake jaw assembly: S21, rotates rotary body, S22, assemble left brake jaw, S23, assemble right brake jaw;Third step: assemble upper cover, left torsion spring and right torsion spring: S31, utilize external equipment to take out pressure plate tooling, S32, assemble left torsion spring, S33, assemble right torsion spring, S34, assemble upper cover plate.Advantages: automatically overcome the defect of misalignment between gear, realize the automatic engagement between gear, do not need to correct the position of gear in advance, improve the efficiency of assembly, reduce the cost of assembly.The assembly sequence of entire step can effectively improve the efficiency of clock assembly, reduce the cost of assembly, reduce the difficulty of clock assembly post-check.

Description

Technical Field

[0001] This invention relates to the field of watch assembly, specifically a watch assembly method. Background Technology

[0002] The watch contains several transition wheels, torsion springs, brake pawls, and rotating bodies. The existing assembly methods are inefficient, and the post-assembly verification is cumbersome and costly.

[0003] Therefore, it is necessary to provide a method for assembling clocks. Summary of the Invention

[0004] The present invention provides a clock assembly method that effectively solves the problems of low efficiency and high cost in existing gear assembly methods.

[0005] The technical solution adopted in this invention is a gear assembly method, which includes the following steps:

[0006] A method for assembling a clock includes the following steps:

[0007] First step: Gear train assembly: including S11, fixed seat, S12, assembling the second transition wheel, S13, assembling the first transition wheel, S14, assembling the saddle wheel, S15, assembling the balance wheel, S16, assembling the rotating body, S17, assembling the pressure plate fixture.

[0008] The second step: assembling the brake pawl of the rotating body, including S21, rotating the rotating body, S22, assembling the left brake pawl, and S23, assembling the right brake pawl.

[0009] The third step: Assemble the top cover, left torsion spring and right torsion spring, including S31, using external equipment to remove the pressure plate fixture, S32, assembling the left torsion spring, S33, assembling the right torsion spring, and S34, assembling the top cover plate.

[0010] Furthermore:

[0011] S11 specifically includes: fixing the base body so that the No. 1 shaft hole, No. 2 shaft hole, No. 3 shaft hole, No. 4 shaft hole, No. 5 shaft hole, No. 1 positioning post, and No. 2 positioning post on the base body are in a vertical state.

[0012] S12 specifically includes: assembling the second transition wheel: assembling the second transition wheel on the base body, so that the second central shaft of the second transition wheel is assembled in the second shaft hole.

[0013] S13 specifically includes: picking up the upper end of the first central shaft of the first transition wheel through the external transplanting mechanism, inserting the lower end of the first central shaft into the first shaft hole, and then the clamping end of the external transplanting mechanism undergoes a horizontal displacement of X1 in the direction away from the first central shaft, so that the first central shaft tilts away from the second central shaft; with the first shaft hole as the center, the first transition wheel is rotated downwards by a spiral N1 turns, so that the first transition wheel meshes with the second transition wheel, and finally makes the first central shaft vertical, and then the external transplanting mechanism disengages from the first central shaft.

[0014] S14 specifically includes: picking up the upper end of the No. 3 central axle of the riding wheel through the external transplanting mechanism, inserting the lower end of the No. 3 central axle into the No. 3 axle hole, and then the clamping end of the external transplanting mechanism undergoes a horizontal displacement of X2 in the direction away from the No. 2 central axle, causing the No. 3 central axle to tilt away from the No. 2 central axle; rotating the riding wheel N2 turns downwards around the No. 3 axle hole as the center, so that the second transition wheel meshes with the riding wheel, and finally makes the No. 3 central axle vertical, and then the external transplanting mechanism disengages from the No. 3 central axle.

[0015] S15 specifically includes: picking up the balance wheel through an external device, moving the balance wheel to a position where it engages with the swivel wheel, and then moving the balance wheel installation downward so that the mounting shaft of the balance wheel is located in the fourth shaft hole.

[0016] S16 specifically includes: picking up the rotating body through an external device, assembling the fifth central shaft of the rotating body onto the fifth shaft hole of the base, at which time the rotating body and the first transition wheel are not engaged.

[0017] S17 specifically includes: picking up the pressure plate fixture through an external device, so that the positioning hole on the pressure plate fixture is coaxially engaged with the No. 5 shaft of the rotating body.

[0018] S21 specifically includes: applying a force to the outside of the rotating body through an external device, causing the rotating body to rotate around the fifth central axis of the rotating body, and finally causing the rotating body to mesh with the first transition wheel, and the left and right slots of the rotating body to rotate to the positions to engage with the left and right brake pawls, respectively.

[0019] S22 specifically includes: picking up the left brake pawl through an external device, assembling the left brake pawl on the base, so that the claw toe of the left brake pawl is located in the left slot of the rotating body.

[0020] S23 specifically includes: picking up the left brake pawl through an external device, assembling the right brake pawl on the base, so that the claw toe of the right brake pawl is located in the right slot of the rotating body.

[0021] S31 specifically includes: using external equipment to remove the pressure plate fixture.

[0022] S32 specifically includes: using an external device to lift the left brake pawl out of the assembly position and keep it fixed; then using another external device to pick up the left torsion spring; inserting one of the suspension ends of the left torsion spring into the lateral hole of the left brake pawl; then the external device drives the left brake pawl to move down to the assembly position; the other external device drives the left torsion spring and the left brake pawl to move down synchronously, so that the left torsion spring is sleeved on the first positioning post on the base; then using an external device to adjust the other suspension end of the left torsion spring, so that the other suspension end of the left torsion spring abuts against the side wall of the base under torsion, ensuring that the left torsion spring and the first positioning post are coaxial.

[0023] S33 specifically includes: using an external device to lift the right brake pawl out of the assembly position and keep it fixed; then using another external device to pick up the right torsion spring; inserting one of the suspension ends of the right torsion spring into the lateral hole of the right brake pawl; then the external device drives the right brake pawl to move down to the assembly position; the other external device drives the right torsion spring and the right brake pawl to move down synchronously, so that the right torsion spring is sleeved on the second positioning post on the base; then using an external device to apply force to the other suspension end of the right torsion spring, so that the other suspension end of the right torsion spring abuts against the side wall of the base under torsion, and ensuring that the right torsion spring and the second positioning post are coaxial.

[0024] Furthermore, X1 ≥ 1 mm, X2 ≥ 1 mm.

[0025] Furthermore, N1≥1 and N2≥1.

[0026] Furthermore, the first transition wheel rotates at a speed of 200 mm / s to 1200 mm / s, and the riding wheel rotates at a speed of 200 mm / s to 1200 mm / s.

[0027] Furthermore, the external transplanting mechanism picks up the No. 1 and No. 3 central shafts by clamping or sucking.

[0028] Furthermore, the method of applying force to the other suspension end of the left torsion spring and the other suspension end of the right torsion spring is the same.

[0029] Furthermore, the method of applying force to the other suspension end of the left torsion spring is as follows: first, a horizontal force is applied to the other suspension end of the left torsion spring to make it elastically deform and abut against the side wall of the base; then, a vertical downward force is applied to the other suspension end of the left torsion spring from above, so that the left torsion spring is coaxial with the No. 1 positioning post.

[0030] Furthermore, the method of applying force to the other suspension end of the left torsion spring is to directly apply a downward resultant force to the other suspension end of the left torsion spring, so that the other suspension end of the left torsion spring abuts against the side wall of the base, and the left torsion spring is coaxial with the No. 1 positioning post.

[0031] The beneficial effects of the invention: The automatic assembly between the first and second transition wheels, and between the riding wheel and the second transition wheel, overcomes the defect of misalignment between gears, achieving automatic meshing between gears. It eliminates the need for prior gear position correction, improving assembly efficiency and reducing assembly costs. The assembly sequence of the entire process effectively improves the efficiency of watch assembly, reduces assembly costs, and simplifies post-assembly calibration. Attached Figure Description

[0032] Figure 1 An exploded view of the product assembled by the watch assembly method provided in the embodiments of this application.

[0033] Figure 2 A schematic diagram of the rotating body, first transition wheel, second transition wheel, wheel hub, balance wheel, left torsion spring, right torsion spring, left brake pawl, right brake pawl, first positioning post and second positioning post assembled in the watch assembly method provided in the embodiments of this application.

[0034] Figure 3 A schematic diagram of the watch assembly method provided in the embodiments of this application, comprising the base, rotating body, first transition wheel, second transition wheel, wheel wheel, balance wheel, left torsion spring, right torsion spring, left brake pawl, right brake pawl, first positioning post and second positioning post.

[0035] Figure 4 This is a schematic diagram of the base used in the watch assembly method provided in the embodiments of this application.

[0036] Figure 5 This is a schematic diagram of the overall product assembled by the watch assembly method provided in the embodiments of this application.

[0037] The markings in the diagram are as follows: 1. Base; 101. Shaft Hole No. 1; 102. Shaft Hole No. 2; 103. Shaft Hole No. 3; 104. Shaft Hole No. 4; 105. Shaft Hole No. 5; 106. Positioning Post No. 1; 107. Positioning Post No. 2; 2. Second Transition Wheel; 3. First Transition Wheel; 4. Riding Wheel; 5. Balance Wheel; 6. Rotating Body; 8. Left Brake Claw; 9. Right Brake Claw; 10. Left Torsion Spring; 11. Right Torsion Spring; 12. Top Cover; 31. Central Shaft No. 1; 32. Gear A; 33. Gear a; 21. Central Shaft No. 2; 22. Gear B; 23. Gear b; 41. Central Shaft No. 3; 42. Gear C; 43. Gear c; 61. Outer Side of Rotating Body; 62. Left Slot; 63. Right Slot; 901. Side Hole; 64. Central Shaft No. 5. Detailed Implementation

[0038] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0039] A method for assembling a clock includes the following steps: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown,

[0040] First step: Gear train assembly, including S11, fixed seat 1, S12, assembling the second transition wheel 2, S13, assembling the first transition wheel 3, S14, assembling the riding wheel 4, S15, assembling the balance wheel 5, S16, assembling the rotating body 6, S17, assembling the pressure plate fixture.

[0041] The second step: assembling the rotating body 6 and the rotating mechanism brake pawl, including S21, rotating the rotating body 6, S22, assembling the left brake pawl 8, and S23, assembling the right brake pawl 9.

[0042] Third step: Assemble the top cover 12, left torsion spring 10 and right torsion spring 11, including S31, using external equipment to remove the pressure plate fixture, S32, assembling the left torsion spring 10, S33, assembling the right torsion spring 11, and S34, assembling the top cover 12 plate.

[0043] In the above design, the assembly sequence of the entire process can effectively improve the efficiency of watch assembly, reduce assembly costs, and reduce the difficulty of post-assembly calibration.

[0044] Specifically:

[0045] S11 specifically includes: such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the base 1 is fixed so that the first shaft hole 101, the second shaft hole 102, the third shaft hole 103, the fourth shaft hole 104, the fifth shaft hole 105, the first positioning post 106, and the second positioning post 107 on the base 1 are in a vertical state; wherein, the first shaft hole 101 is used to assemble the first transition wheel 3, the second shaft hole 102 is used to assemble the second transition wheel 2, the third shaft hole 103 is used to assemble the riding wheel 4; the fourth shaft hole 104 is used to assemble the balance wheel 5; the fifth shaft hole 105 is used to assemble the rotating body 6; the first positioning post 106 is used to mount the left torsion spring 10, and the second positioning post 107 is used to mount the right torsion spring 11.

[0046] S12 specifically includes: assembling the second transition wheel 2 onto the base 1, such that the second central shaft 21 of the second transition wheel 2 is assembled into the second shaft hole 102.

[0047] S13 specifically includes: picking up the upper end of the first central shaft 31 of the first transition wheel 3 through the external transplanting mechanism, inserting the lower end of the first central shaft 31 into the first shaft hole 101, and then the clamping end of the external transplanting mechanism undergoes a horizontal displacement of X1 in the direction away from the first central shaft 31, so that the first central shaft 31 tilts away from the second central shaft 21; with the first shaft hole 101 as the center, the first transition wheel 3 is rotated downwards by a spiral for N1 turns, so that the first transition wheel 3 meshes with the second transition wheel 2, and finally makes the first central shaft 31 vertical, and then the external transplanting mechanism disengages from the first central shaft 31.

[0048] It should be noted that the first transition wheel 3 includes a gear A32 mounted on a first central shaft 31 and a gear a33 coaxial with gear A32. The second transition wheel 2 includes a second central shaft 21, a gear B22 mounted on the second central shaft 21, and a gear b23 coaxial with gear B22. Gear A32 meshes with the rotating body 6, and gear a33 meshes with gear B22.

[0049] In the actual assembly process, there are two situations: one is that the first transition wheel 3 and the second transition wheel 2 are directly engaged; the other is that the first transition wheel 3 and the second transition wheel 2 are misaligned. In this case, the second transition wheel 2 will be pressed against the first transition wheel 3, thus shifting towards one side of the first transition wheel 3. For the second situation, in method S13, when the first transition wheel 3 is initially rotated, since the first transition wheel 3 and the second transition wheel 2 are not engaged, the second transition wheel 2 does not rotate. As the first transition wheel 3 rotates helically, the first transition wheel 3 and the second transition wheel 2 gradually engage.

[0050] S14 specifically includes: picking up the upper end of the third central axle 41 of the riding wheel 4 through the external transplanting mechanism, inserting the lower end of the third central axle 41 into the third axle hole 103, and then the clamping end of the external transplanting mechanism undergoes a horizontal displacement of X2 in the direction away from the second central axle 21, so that the third central axle 41 tilts away from the second central axle 21; with the third axle hole 103 as the center, the riding wheel 4 is rotated downward spirally N2 times, so that the second transition wheel 2 meshes with the riding wheel 4, and finally the third central axle 41 is in a vertical state, and then the external transplanting mechanism disengages from the third central axle 41.

[0051] like Figure 2 As shown, it should be noted that the riding wheel 4 includes a third central shaft 41, a gear C42 and a gear c43 mounted on the third central shaft 41, gear B22 meshing with gear C42, and gear B23 meshing with gear c43.

[0052] In actual assembly, two situations exist: one is that the swivel wheel 4 and the second transition wheel 2 are directly engaged; the other is that the swivel wheel 4 and the second transition wheel 2 are misaligned, in which case the second transition wheel 2 will be pressed against the swivel wheel 4, thus shifting to one side of the swivel wheel 4. For the second situation, in method S14, when the swivel wheel 4 is initially rotated, since the swivel wheel 4 and the second transition wheel 2 are not engaged, the second transition wheel 2 does not rotate. As the swivel wheel 4 rotates helically, the swivel wheel 4 and the second transition wheel 2 gradually engage.

[0053] S15 specifically includes: picking up the balance wheel 5 through an external device, moving the balance wheel 5 to a position where it engages with the riding wheel 4, and then installing and lowering the balance wheel 5 so that the mounting shaft of the balance wheel 5 is located in the fourth shaft hole 104.

[0054] S16 specifically includes: picking up the rotating body 6 through an external device, assembling the fifth central shaft 64 of the rotating body 6 onto the fifth shaft hole 105 of the base, at which time the rotating body 6 is not engaged with the first transition wheel 3.

[0055] S17 specifically includes: picking up the pressure plate fixture through external equipment, so that the positioning hole on the pressure plate fixture is coaxially engaged with the fifth axis of the rotating body 6.

[0056] S21 specifically includes: applying a force to the outer side 61 of the rotating body through an external device, causing the rotating body 6 to rotate around the fifth central shaft 64 of the rotating body 6, and finally causing the rotating body 6 to mesh with the first transition wheel 3, and the left slot 62 and right slot 63 of the rotating body 6 to rotate to the position to engage with the left brake pawl 8 and the right brake pawl 9 respectively.

[0057] S22 specifically includes: picking up the left brake pawl 8 through an external device, assembling the left brake pawl 8 onto the base, such that the mounting hole on the left brake pawl 8 is located in the left limiting protrusion on the base, and such that the claw toe of the left brake pawl 8 is located in the left slot 62 of the rotating body 6.

[0058] S23 specifically includes: picking up the left brake pawl 8 through an external device, assembling the right brake pawl 9 on the base, such that the mounting hole on the right brake pawl 9 is located in the right limit protrusion on the base, and such that the claw toe of the right brake pawl 9 is located in the right slot 63 of the rotating body 6.

[0059] S31 specifically includes: removing the pressure cap using an external device;

[0060] S32 specifically includes: using an external device to lift the left brake pawl 8 out of the assembly position and keep it fixed; then using another external device to pick up the left torsion spring 10; inserting one of the suspension ends of the left torsion spring 10 into the lateral hole 901 of the left brake pawl 8; then the external device drives the left brake pawl 8 to move down to the assembly position; the other external device drives the left torsion spring 10 and the left brake pawl 8 to move down synchronously, so that the left torsion spring 10 is sleeved on the first positioning post 106 on the base; then using the external device to adjust the other suspension end of the left torsion spring 10, so that the other suspension end of the left torsion spring 10 abuts against the side wall of the base under torsion, ensuring that the left torsion spring 10 and the first positioning post 106 are coaxial.

[0061] S33 specifically includes: using an external device to lift the right brake pawl 9 out of the assembly position and keep it fixed; then using another external device to pick up the right torsion spring 11; inserting one of the suspended ends of the right torsion spring 11 into the lateral hole 901 of the right brake pawl 9; then the external device drives the right brake pawl 9 to move down to the assembly position; the other external device drives the right torsion spring 11 to move down synchronously with the right brake pawl 9, so that the right torsion spring 11 is sleeved on the second positioning post 107 on the base; then the external device applies a force to the other suspended end of the right torsion spring 11, so that the other suspended end of the right torsion spring 11 abuts against the side wall of the base under torsion, and ensures that the right torsion spring 11 and the second positioning post 107 are coaxial.

[0062] In the above design, the automatic assembly between the first transition wheel 3 and the second transition wheel 2, and between the riding wheel 4 and the second transition wheel 2, overcomes the defect of misalignment between gears, achieving automatic meshing between gears. This eliminates the need for prior gear position correction, improving assembly efficiency and reducing assembly costs. The assembly sequence of the entire process effectively improves the efficiency of watch assembly, reduces assembly costs, and simplifies post-assembly calibration.

[0063] Specifically: X1≥1mm, X2≥1mm.

[0064] During actual assembly, the calculation principles of X1 and X2 are the same. Taking the calculation principle of X1 as an example: after the lower end of the first central shaft 31 extends into the first shaft hole 101, the coordinate of the upper end of the first central shaft 31 is recorded as the initial point. The clamping end of the transfer mechanism is displaced, so that the upper end of the first central shaft 31 is horizontally offset by a displacement of X1 relative to the initial point.

[0065] In the above design, setting the range of X1 to be greater than 1mm can effectively ensure that when the first transition wheel 3 and the second transition wheel 2 are misaligned, there is a horizontal displacement between the tooth groove of the first transition wheel 3 and the tooth groove of the second transition wheel 2, while not easily affecting the rigidity of the first central shaft 31 and the positional relationship of other components attached to the product.

[0066] Specifically: N1≥1, N2≥1.

[0067] In the above design, the values ​​of N1 and N2 can effectively ensure the effective meshing of the first transition wheel 3 with the second transition wheel 2 and the riding wheel 4 with the second transition wheel 2.

[0068] Specifically, the first transition wheel 3 rotates at a speed of 200mm / s to 1200mm / s, and the riding wheel 4 rotates at a speed of 200mm / s to 1200mm / s.

[0069] The above design avoids vibration of the seat 1 caused by excessive rotation speed during the meshing of the first transition wheel 3 and the riding wheel 4 with the second transition wheel 2, and also avoids wear between the first central shaft 31 and the first shaft hole 101, and between the third central shaft 41 and the third shaft hole 103.

[0070] Specifically, the external transplanting mechanism picks up the No. 1 central axis 31 and the No. 3 central axis 41 by clamping or sucking.

[0071] In the above design, both clamping and suction can ensure the effective transfer of the first central axis 31 and the third central axis 41.

[0072] Specifically, the method of applying force to the other suspension end of the left torsion spring 10 and the other suspension end of the right torsion spring 11 is the same.

[0073] The above design reduces the need for adjustments to the assembly equipment program.

[0074] Specifically: the method of applying force to the other suspension end of the left torsion spring 10 is to first apply a horizontal force to the other suspension end of the left torsion spring 10 so that it undergoes elastic deformation and abuts against the side wall of the base, and then apply a vertical downward force to the other suspension end of the left torsion spring 10 from above, so that the left torsion spring 10 and the first positioning post 106 are coaxial.

[0075] In the above design, a horizontal force can be applied to the other suspension end of the left torsion spring 10 first to make it elastically deform and abut against the side wall of the base. Then, a vertical downward force can be applied to the other suspension end of the left torsion spring 10 from above, which can reduce the requirements for the structural complexity of external equipment.

[0076] Specifically: the method of applying force to the other suspension end of the left torsion spring 10 is to directly apply a downward resultant force to the other suspension end of the left torsion spring 10, so that the other suspension end of the left torsion spring 10 abuts against the side wall of the base, and the left torsion spring 10 is coaxial with the first positioning post 106.

[0077] In the above design, applying a downward-sloping resultant force directly to the other suspension end of the left torsion spring 10 can shorten the assembly time of the left torsion spring 10 and improve assembly efficiency.

[0078] In further detail, it should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for assembling a clock, characterized in that: Includes the following steps: Step 1: Gear train assembly: S11, Fix the base (1): Fix the base (1) so that the first shaft hole (101), the second shaft hole (102), the third shaft hole (103), the fourth shaft hole (104), the fifth shaft hole (105), the first positioning post (106), and the second positioning post (107) on the base (1) are in a vertical state; S12. Assemble the second transition wheel (2): Assemble the second transition wheel (2) on the base (1) so that the second central shaft (21) of the second transition wheel (2) is assembled in the second shaft hole (102); S13. Assemble the first transition wheel (3): Pick up the upper end of the first central shaft (31) of the first transition wheel (3) through the external transfer mechanism, insert the lower end of the first central shaft (31) into the first shaft hole (101), and the clamping end of the external transfer mechanism moves away from the first central shaft (31) by a horizontal displacement of X1, so that the first central shaft (31) tilts away from the second central shaft (21); with the first shaft hole (101) as the center, rotate the first transition wheel (3) downwards by N1 turns, so that the first transition wheel (3) meshes with the second transition wheel (2), and finally makes the first central shaft (31) vertical, and then the external transfer mechanism disengages from the first central shaft (31); S14. Assemble the riding wheel (4): Pick up the upper end of the third central shaft (41) of the riding wheel (4) through the external transfer mechanism, insert the lower end of the third central shaft (41) into the third shaft hole (103), and the clamping end of the external transfer mechanism will move horizontally by a value of X2 in the direction away from the second central shaft (21), so that the third central shaft (41) tilts away from the second central shaft (21); with the third shaft hole (103) as the center, rotate the riding wheel (4) downward spirally N2 times, so that the second transition wheel (2) meshes with the riding wheel (4), and finally makes the third central shaft (41) vertical, and then the external transfer mechanism disengages from the third central shaft (41); S15, Assemble the balance wheel (5): Pick up the balance wheel (5) using an external device, move the balance wheel (5) to the position where it engages with the riding wheel (4), and then install the balance wheel (5) downward so that the mounting shaft of the balance wheel (5) is located in the fourth shaft hole (104); S16. Assemble the rotating body (6): Pick up the rotating body (6) through an external device and assemble the fifth central shaft of the rotating body (6) onto the fifth shaft hole (105) of the base. At this time, the rotating body (6) and the first transition wheel (3) are not engaged. S17. Assemble the pressure plate fixture: Pick up the pressure plate fixture through external equipment so that the positioning hole on the pressure plate fixture is coaxial with the fifth central shaft (64) of the rotating body (6). Second step: Assembly of the rotating mechanism brake gripper of the rotating body (6): S21, Rotating the rotating body (6): By applying force to the outer side (61) of the rotating body through external equipment, the rotating body (6) rotates around the fifth central shaft (64) of the rotating body (6), and finally the rotating body (6) meshes with the first transition wheel (3). The left slot (62) and right slot (63) of the rotating body (6) rotate to the position to be engaged with the left brake pawl (8) and the right brake pawl (9) respectively. S22, Assemble the left brake pawl (8): Pick up the left brake pawl (8) through an external device and assemble the left brake pawl (8) onto the base so that the claw toe of the left brake pawl (8) is located in the left slot (62) of the rotating body (6); S23. Assemble the right brake pawl (9): Pick up the left brake pawl (8) through an external device and assemble the right brake pawl (9) onto the base so that the claw toe of the right brake pawl (9) is located in the right slot (63) of the rotating body (6). Third step: Assemble the top cover (12), left torsion spring (10), and right torsion spring (11): S31. Use external equipment to remove the pressure plate fixture. S32. Assemble the left torsion spring (10): Use an external device to lift the left brake pawl (8) out of the assembly position and keep it fixed. Then, use another external device to pick up the left torsion spring (10) and insert one of the suspension ends of the left torsion spring (10) into the side hole (901) of the left brake pawl (8). Then, the external device drives the left brake pawl (8) to move down to the assembly position. The other external device drives the left torsion spring (10) and the left brake pawl (8) to move down synchronously, so that the left torsion spring (10) is sleeved on the first positioning post (106) on the base. Then, use the external device to adjust the other suspension end of the left torsion spring (10) so that the other suspension end of the left torsion spring (10) abuts against the side wall of the base under torsion, ensuring that the left torsion spring (10) and the first positioning post (106) are coaxial. S33. Assemble the right torsion spring (11); use an external device to lift the right brake pawl (9) out of the assembly position and keep it fixed. Then, use another external device to pick up the right torsion spring (11) and insert one of the suspension ends of the right torsion spring (11) into the side hole (901) of the right brake pawl (9). Then, the external device drives the right brake pawl (9) to move down to the assembly position. The other external device drives the right torsion spring (11) and the right brake pawl (9) to move down synchronously, so that the right torsion spring (11) is sleeved on the second positioning post (107) on the base. Then, use an external device to apply force to the other suspension end of the right torsion spring (11), so that the other suspension end of the right torsion spring (11) abuts against the side wall of the base under torsion, and ensures that the right torsion spring (11) and the second positioning post (107) are coaxial. S34. Assemble the top cover (12) plate.

2. The watch assembly method according to claim 1, characterized in that: X1 ≥ 1mm, X2 ≥ 1mm.

3. The watch assembly method according to claim 1, characterized in that: The values ​​are N1 ≥ 1 and N2 ≥ 1.

4. The watch assembly method according to claim 1, characterized in that: The first transition wheel (3) rotates at a speed of 200 mm / s to 1200 mm / s, and the riding wheel (4) rotates at a speed of 200 mm / s to 1200 mm / s.

5. The watch assembly method according to claim 1, characterized in that: The external transplanting mechanism picks up the No. 1 central axis (31) and the No. 3 central axis (41) by clamping or sucking.

6. The clock assembly method according to claim 1, characterized in that: The force is applied to the other suspension end of the left torsion spring (10) and the other suspension end of the right torsion spring (11) in the same way.

7. The watch assembly method according to claim 6, characterized in that: The method of applying force to the other suspension end of the left torsion spring (10) is to first apply a horizontal force to the other suspension end of the left torsion spring (10) so that it undergoes elastic deformation and abuts against the side wall of the base, and then apply a vertical downward force to the other suspension end of the left torsion spring (10) from above, so that the left torsion spring (10) is coaxial with the first positioning post (106).

8. The watch assembly method according to claim 6, characterized in that: The method of applying force to the other suspension end of the left torsion spring (10) is to directly apply a downward resultant force to the other suspension end of the left torsion spring (10), so that the other suspension end of the left torsion spring (10) abuts against the side wall of the base, and the left torsion spring (10) is coaxial with the first positioning post (106).

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