A watch case processing fixture

Abstract

The utility model discloses a watch case processing fixture, including: a base, a lock core and at least one clamping assembly; a cavity is provided in the base, the cavity includes a first connecting portion and a clearance area, and a notch is provided on the side wall of the base; the clamping assembly includes a first component and a second component, and a clamping claw for clamping the watch case is provided on the first component or the second component; the lock core can be installed in the clearance area in a clearance fit manner, and when the lock core is installed in the clearance area and the second component is threadedly connected to the lock core, under the action of the force applied to the lock core, the second component can move linearly relative to the first component to open or close the clamping claw. The structure is simple, the operation is convenient, the watch case parts can be quickly clamped and fixed, and the watch case processing requirements of different shapes and sizes can be met.

Description

Technical Field

[0001] The utility model belongs to the technical field of fixture equipment, and in particular relates to a watch case processing fixture. Background Art

[0002] The watch case (abbreviated as case) refers to the outer shell structure of a watch, which is mainly used to protect the movement, hands, dial, etc. inside the watch. It is mainly composed of accessories such as the watch body, upper cover, and back cover.

[0003] When the watch case is processed by machine tools, it needs to be fixed and positioned by a fixture. Because the watch cases of different varieties are of different sizes and the shapes of different accessories are different, the clamping requirements are also different.

[0004] Current watch case processing fixtures are usually designed for watch case accessories of specific shapes and sizes, with a limited scope of application. During processing, the fixtures need to be frequently replaced and aligned, which makes clamping inconvenient and the processing efficiency low. Summary of the invention

[0005] The utility model aims to provide a watch case processing fixture to solve the problems of inconvenient clamping and low processing efficiency when processing the watch case.

[0006] The technical solution is as follows:

[0007] The watchcase processing fixture of the utility model comprises:

[0008] A base, a lock cylinder and at least one clamping assembly;

[0009] A cavity is provided in the base, the cavity includes a first connecting portion and a clearance area, and a notch is provided on the side wall of the base;

[0010] The clamping assembly comprises a first member and a second member, the first member is provided with a second connecting portion, the first connecting portion can be coupled with the second connecting portion to detachably mount the first member on the base, and the first member is provided with a channel along its axial direction;

[0011] A threaded rod is provided at one end of the second member, and the second member can pass through the first member along the channel and at least a portion of the threaded rod is exposed outside the first member;

[0012] The first member or the second member is provided with a clamping claw for clamping the watch case;

[0013] The lock core can be installed in the clearance area in a clearance fit manner, a threaded through hole matching with the threaded rod is provided in the lock core, and at least two grooves are provided on the side wall of the lock core along the circumferential direction;

[0014] When the lock core is installed in the clearance area and the second component is threadedly connected to the lock core, under the action of the force applied to the groove, the second component can move linearly relative to the first component to open or close the clamping jaws.

[0015] In one of the embodiments, a force rod is further included, and the force rod can pass through the notch and extend into the groove.

[0016] In one embodiment, a first inclined surface is provided on the inner wall of the first component at one end opposite to the second connecting portion, and a second inclined surface is provided on the outer wall of the second component at one end opposite to the threaded rod, and the second inclined surface can be in contact with the first inclined surface and slide relative to the first inclined surface.

[0017] In one embodiment, the clamp is provided on the two components and is located at the end opposite to the threaded rod, and the second inclined surface is provided on the outer wall of the clamp. When the second component moves linearly toward the threaded rod relative to the first component, the clamp is retracted.

[0018] In one embodiment, the clamp is provided on the one component and is located at an end opposite to the second connecting portion, and the first inclined surface is provided on the inner wall of the clamp. When the second component moves linearly toward the threaded rod relative to the first component, the clamp is opened.

[0019] In one embodiment, the second inclined surface is configured to be interference fit with the first inclined surface.

[0020] In one embodiment, the first connection portion is a thread provided on the inner wall of the base, and the second connection portion is a thread provided on one end of the first member.

[0021] In one embodiment, threads are provided at both ends of the inner wall of the base, the clearance area is formed between the threads at both ends, and a limiting step is provided on the end of the clearance area away from the first connecting portion.

[0022] In one embodiment, the distance between the bottom end of the notch and the top end of the notch is smaller than the height of the lock core.

[0023] In one embodiment, a first clamping assembly and a second clamping assembly are provided, wherein the first component of the first clamping assembly is an expanding clamp, the second component of the first clamping assembly is a pull rod, the top end of the expanding clamp is provided with the clamping claw, and the clamping claw is used to clamp the inner wall of the watch case; the first component of the second clamping assembly is a retracting clamp sleeve, the second component of the second clamping assembly is a retracting clamp, the top end of the retracting clamp is provided with the clamping claw, and the clamping claw is used to clamp the outer wall of the watch case.

[0024] The technical solution provided by the utility model has the following advantages and effects:

[0025] The clamping jaws are used to adapt to watch cases of different sizes. The clamping jaws are installed on the movable second component or on the first component fixed on the base to clamp the outer shape or inner shape of the watch case. The clamping assembly composed of the first component and the second component can be removed from the base, which is simple and convenient to switch the clamping assembly according to the processing requirements. The lock core is threadedly connected to the second component, and the relative displacement between the first component and the second component is achieved by pushing the lock core to rotate, so that the clamping jaws are opened or closed. The structure is simple and easy to operate. The watch case parts can be quickly clamped and fixed, and the processing requirements of watch cases of different shapes and sizes can be met. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the components of the first embodiment of the watch case processing fixture of the utility model;

[0027] Figure 2 It is a three-dimensional diagram of the first embodiment after assembly;

[0028] Figure 3 It is a cross-sectional view of the first embodiment after assembly;

[0029] Figure 4 is a cross-sectional view of the base;

[0030] Figure 5 It is a schematic diagram of components of the second embodiment of the watch case processing fixture of the utility model;

[0031] Figure 6 It is a perspective view of the second embodiment after assembly;

[0032] Figure 7 This is a cross-sectional view of the second embodiment after assembly.

[0033] Description of reference numerals:

[0034] 100. Watch case processing fixture,

[0035] 110. base, 111. cavity, 112. first connecting portion, 113. clearance area, 114. notch, 115. limiting step,

[0036] 120, lock core, 121, threaded through hole, 122, groove,

[0037] 130. Clamping assembly,

[0038] 140. expansion clamp, 141. second connecting portion, 142. channel, 143. clamping claw, 144. first section, 145. second section, 146. strip groove, 147. claw wall, 148. first inclined surface,

[0039] 150, pull rod, 151, threaded rod, 152, second inclined surface,

[0040] 160. Afterburner rod,

[0041] 170, clamping, 171, slot, 172, threaded rod, 173, clamping claw, 174, first section, 175, second section, 176, strip groove, 177, claw wall, 178, second inclined surface,

[0042] 180. Retractable clamping sleeve; 181. Second connecting portion; 182. Channel; 183. First inclined surface. DETAILED DESCRIPTION

[0043] In order to facilitate the understanding of the present invention, specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

[0044] Unless otherwise specified or defined, the "first, second..." used in this article is merely used to distinguish names and does not represent a specific quantity or order.

[0045] Unless specifically stated or defined otherwise, the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0046] It should be noted that, in this document, “fixed to” or “connected to” may mean directly fixing or connecting to an element, or indirectly fixing or connecting to an element.

[0047] When machining a watch case on a machine tool (such as a lathe or milling machine), a watch case machining fixture is needed to fix and position the watch case. Current watch case machining fixtures are usually designed for watch cases of specific shapes and sizes, and have a limited scope of application. Different fixtures are required when machining watch cases of different types or machining different accessories in watch cases. There are many types of fixtures, which increases the cost of the fixtures and the time it takes to replace the fixtures. In addition, clamping is inconvenient, which reduces the machining efficiency.

[0048] The base of the watch case processing fixture of the utility model is installed on the machine tool, and the clamping assembly is detachably installed on the base. The clamping assembly consists of two components, one component is installed on the base, and the other component is threadedly installed on the lock core. A clamping claw is set on one of the two components. By applying a rotational force on the lock core, the component installed on the lock core is driven to move linearly relative to the component installed on the base, so as to adjust the degree of expansion of the clamping claw or the degree of contraction of the clamping claw. It can be applied to watch cases of different varieties. Even if it is necessary to switch between clamping the outer shape of the watch case (i.e. clamping the outer wall of the watch case) and clamping the inner shape of the watch case (i.e. fixing the watch case by pressing against the inner wall of the watch case), such as switching between processing accessories such as the watch body, the upper cover, and the back cover, the base does not need to be replaced, only the clamping assembly needs to be replaced, and different clamping assemblies have the same connection method and the same driving method with the base. The structure is simple, the operation is convenient, the applicability is strong, and the watch case can be clamped quickly.

[0049] Figure 1 It is a schematic diagram of the components of the first embodiment of the watch case processing fixture of the utility model; Figure 2 It is a perspective view of the first embodiment after assembly; Figure 3 The first embodiment is used to clamp the inner shape of a watch case. In this embodiment, the watch case processing fixture 100 mainly includes a base 110, a lock core 120 and a clamping assembly 130. Figure 4 It is a cross-sectional view of the base. The base 110 is cylindrical, and a cavity 111 is dug in the center thereof, and the cavity 111 runs through the top and bottom ends of the base 110. The lock core 120 is cylindrical, and a threaded through hole 121 is set in the center. The clamping assembly 130 is composed of an expansion clamp 140 and a pull rod 150. The expansion clamp 140 is a first component, which is installed on the base 110; the pull rod 150 is a second component, which is connected to the lock core 120. Specifically, a thread is set on the inner wall of the base 110 to form a first connecting part 112, and a thread is also set on the bottom end of the expansion clamp 140 to form a second connecting part 141. The first connecting part 112 is threadedly connected to the second connecting part 141, so that the expansion clamp 140 is installed on the base 110. It should be emphasized that the first component and the base in the utility model are detachably connected, and the threaded connection adopted in the first embodiment is only one of the implementation methods. Other connection methods can also be used to achieve detachable connection, such as setting a protrusion at the lower end of the expansion clamp 140 and setting a groove on the inner wall of the base 110, so as to achieve the clamping connection between the expansion clamp 140 and the base 110.

[0050] The inner wall of the base 110 is provided with a clearance area 113 below the first connection portion 112, and the lock core 120 is placed in the clearance area 113. The expansion clamp 140 is provided with a channel 142 along its axial direction, and the pull rod 150 can extend into the channel 142 and pass through the expansion clamp 140 along the channel 142. The lower end of the pull rod 150 is a threaded rod 151, and the length of the pull rod 150 is greater than the length of the expansion clamp 140, so that after the pull rod 150 passes through the expansion clamp 140, a part of the threaded rod 151 is exposed outside the expansion clamp 140. Then, the threaded rod 151 can be screwed with the threaded through hole 121 on the lock core 120, so as to realize the threaded connection between the pull rod 150 and the lock core 120.

[0051] The top of the expansion clamp 140 is provided with a clamping claw 143. Specifically, the top of the expansion clamp 140 includes a first section 144 and a second section 145. The first section 144 is annular. The second section 145 is below the first section 144. The outer surface of the second section 145 is inwardly concave. The wall thickness of the second section 145 is less than that of the first section 144. Six strip grooves 146 are provided along the circumferential direction from the bottom of the second section 145. The strip grooves 146 extend toward the first section 144 until they reach the top of the first section 144. The six strip grooves 146 divide the top wall of the expansion clamp 140 into six claw walls 147. When the pull rod 150 moves downward in the channel 142, the pull rod 150 squeezes the claw wall 147, so that the claw wall 147 is stretched outward, increasing the diameter of the circle surrounded by the top of the claw wall 147, so that the clamping claw 143 can clamp the inner shape of watch cases of different sizes.

[0052] In order to achieve squeezing the claw wall 147 when the pull rod 150 moves downward in the channel, a first inclined surface 148 is provided on the inner wall of the top end of the expansion clamp 140, and a second inclined surface 152 is provided on the outer wall of the top end of the pull rod 150. The first inclined surface 148 is inclined downwardly of the expansion clamp 140, and the second inclined surface 152 is inclined downwardly of the pull rod 150. The second inclined surface 152 can be attached to the first inclined surface 148. When the pull rod 150 moves downwardly, the inner diameter of the expansion clamp 140 is gradually reduced due to the first inclined surface 148, so that the outer wall of the pull rod 150 will squeeze the inner wall of the expansion clamp 140, and the clamping claw 143 is stretched open.

[0053] In this embodiment, the second inclined surface 152 and the first inclined surface 148 are configured to be interference fit, so that the pull rod 150 can play a better effect of opening the clamping jaws 143 in a shorter linear movement stroke, thereby improving the clamping efficiency.

[0054] In order to simply and conveniently control the linear movement of the pull rod 150 in the expansion clamp 140, in this embodiment, four grooves 122 are arranged on the side wall of the lock core 120 at circumferential intervals, and a notch 114 is arranged on the side wall of the base 110. The distance between the bottom end of the notch 114 and the top end of the notch 114 is smaller than the height of the lock core 120, thereby restricting the lock core 120 within the clearance area 113. The lock core 120 is installed in the clearance area 113 in a clearance fit manner. Specifically, the inner wall of the base 110 at the clearance area 113 is a smooth surface without threads. When the lock core 120 is installed in the clearance area 113, there is a gap between the outer wall of the lock core 120 and the inner wall of the clearance area 113. When the lock core 120 is installed in the clearance area 113 and the threaded rod 151 of the pull rod 150 is connected with the threaded through hole 121 of the lock core 120, the force rod 160 is inserted into the groove 122, and a thrust is applied to the force rod 160. A force is generated in the groove 122 to rotate the lock core 120, and the lock core 120 is threadedly connected with the threaded rod 151 on the pull rod 150. When the threads are tightened, the lock core 120 is blocked by the bottom end of the expansion clamp 140 and cannot move upward, and can only pull the pull rod 150 to move downward. In this way, the pull rod 150 can move linearly in the expansion clamp 140.

[0055] Two sections of threads are arranged on the inner wall of the base 110. The thread section near the top forms the first connecting portion 112, and the thread section near the bottom is used to fix the base on the machine tool. A clearance area 113 is provided between the two sections of threads. A limiting step 115 is provided on the clearance area 113 near one end of the lower section of threads to limit the downward movement of the lock core 120. The diameter of the first connecting portion 112 is the same as the diameter of the clearance area 113, while the diameter of the lock core 120 is smaller than the diameter of the clearance area 113. Therefore, when the lock core 120 is installed in the clearance area 113 of the base 110, the lock core 120 can be dropped from the top of the base 110, and the lock core 120 can automatically slide into the clearance area 113. It is simple, convenient and easy to operate to install the lock core 120 in the clearance area 113.

[0056] When machining the watch case, the base 110 is assembled on the machine tool by threaded connection, the lock core 120 is assembled in the clearance area 113 of the base 110 by clearance fit, and the expansion clamp 140 is fixed on the base 110 by threaded connection. The pull rod 150 extends into the channel 142 of the expansion clamp 140, passes through the expansion clamp 140, and a part of the threaded rod 151 of the pull rod 150 is screwed into the lock core 120 through the flat head at the top of the pull rod 150, and then the watch case is put on the clamping jaw 143, and the force rod 160 is extended into the groove 122 of the lock core 120. The force rod 160 and the groove 122 are in clearance fit, and the force rod 160 is manually pushed, and the force rod 160 drives the lock core 120 to rotate, and the lock core 120 drives the pull rod 150 downward, and the lock core 120 is screwed on the threaded rod 151 of the pull rod 150, and the clamping jaw 143 is opened to clamp the inner shape of the watch case parts, and the parts are clamped. After the processing is completed, the force rod 160 is pushed to drive the lock core 120 to rotate so that the lock core 120 and the pull rod 150 are loosened, and the pull rod 150 moves upward, so that the expansion clamp 140 is reduced, and the processed parts are removed.

[0057] It should be noted that the number of grooves 122 on the lock core 120 is related to the angle of the notch 114 (i.e., the angle of the notch projected as an arc). When the angle of the notch 114 is large enough, two grooves 122 are sufficient, but the rigidity of the lock core 120 is reduced; when the angle of the notch 114 is small, four or six grooves can be provided. As long as the force rod 160 is inserted into the groove 122, the lock core 120 can be continuously rotated by pushing the force rod 160 in the space of the notch 114.

[0058] In one example, the watch case processing fixture 100 does not include the force rod 160 , and the user can use other tools (such as an iron rod) to insert into the groove of the lock cylinder to rotate the lock cylinder.

[0059] Figure 5 It is a schematic diagram of components of the second embodiment of the watch case processing fixture of the utility model; Figure 6 It is a perspective view of the second embodiment after assembly; Figure 71 is a cross-sectional view after the second embodiment is assembled. The second embodiment is used to clamp the outer shape of the watch case, and the difference from the first embodiment is only that the clamping assembly is different. The clamping assembly 130 in the second embodiment includes a clamp 170 and a clamp sleeve 180. The clamp sleeve 180 is a first component, and its bottom end is provided with a thread to form a second connecting portion 181. The second connecting portion 181 is threadedly connected with the first connecting portion 112 to install the clamp sleeve 180 on the base 110. The clamp sleeve 180 is provided with a channel 182 along its axial direction, and the clamp 170 can extend into the channel 182 and pass through the clamp sleeve 180 along the channel 182. The clamp 170 is a second component, and its top end is provided with a slot 171 for placing the watch case, and the bottom end is a threaded rod 172. The length of the clamp 170 is greater than the length of the clamp sleeve 180, so that after the clamp 170 passes through the clamp sleeve 180, a part of the threaded rod 172 is exposed outside the clamp sleeve 180. Then, the threaded rod 172 can be screwed with the threaded through hole 121 on the lock core 120, so as to realize the threaded connection between the clip 170 and the lock core 120. In the second embodiment, a clamping claw 173 is provided at the top of the clip 170. Specifically, the top of the clip 170 includes a first section 174 and a second section 175. The first section 174 is similar to a frustum. The second section 175 is below the first section 174. The outer surface of the second section 175 is concave inward. The wall thickness of the second section 175 is less than that of the first section 174. Four strip grooves 176 are opened along the circumferential direction from the bottom of the second section 175. The strip grooves 176 extend toward the first section 174 until reaching the top of the first section 174. The four strip grooves 176 divide the top wall of the clamp 170 into four claw walls 177. When the clamp 170 moves downward in the channel 182, the inner wall of the clamp sleeve 180 will squeeze the claw wall 177, causing the claw wall 177 to retract inward, so that the clamp 173 can clamp the outer shape of the watch case.

[0060] A first inclined surface 183 is provided on the inner wall of the top of the clamping sleeve 180, and a second inclined surface 178 is provided on the outer wall of the top of the clamping sleeve 180. The first inclined surface 183 is inclined downwardly of the clamping sleeve 180, and the second inclined surface 178 is inclined downwardly of the clamping sleeve 170. The second inclined surface 178 can be attached to the first inclined surface 183. When the clamping sleeve 170 moves downward, the outer wall of the clamping sleeve 180 is squeezed by the inner wall of the clamping sleeve 180, so that the clamping jaws 173 are closed.

[0061] In the second embodiment, the second inclined surface 178 and the first inclined surface 183 are also interference fit, so that the clamping 170 can achieve a better effect of closing the clamping jaws 173 in a shorter stroke, thereby improving the clamping efficiency.

[0062] When processing the watch case, the base 110 is assembled on the machine tool by threaded connection, the lock core 120 is assembled in the base 110 by clearance fit, and the clamp sleeve 180 is fixed on the base 110 by threaded connection. The clamp 170 is inserted into the channel 182 of the clamp sleeve 180, passed through the clamp sleeve 180, and then the watch case parts are placed in the clamping jaws 173, and the force rod 160 is inserted into the groove 122 of the lock core 120 by clearance fit, and the force rod 160 is manually pushed, and the force rod 160 drives the lock core 120 to rotate, and the lock core 120 pulls the clamp 170 downward, and the lock core 120 is screwed on the threaded rod 172 of the clamp 170. Under the action of the clamp sleeve 180, the clamp 170 is reduced to clamp the sample shape, and the clamping of the parts is completed. After the processing is completed, the force rod 160 is pushed to drive the lock core 120 to rotate to loosen the clamp 170, and the processed parts are removed.

[0063] According to the processing process of the first embodiment and the processing process of the second embodiment, when it is necessary to switch between the clamping inner shape or the outer shape according to the processing characteristics of the watch case parts, it is not necessary to disassemble the base 110, and it is only necessary to replace the expansion clamp 140, the pull rod 150 with the clamp sleeve 180 and the clamp 170. The watch case can be installed and fixed quickly and accurately, reducing the time for manual adjustment and alignment. This helps to improve production efficiency and realize efficient processing and assembly processes. In addition, it can ensure that each watch case is fixed and positioned in the same way during the processing, thereby ensuring the consistency and repeatability of the product.

[0064] It should be noted that the watch case processing fixture of the present invention can be used not only for processing traditional watch cases, but also for processing ultra-thin watch case parts.

[0065] In one example, the watch case processing fixture 100 includes a clamping assembly 130 for clamping the inner shape of the watch case, which is composed of an expansion clamp 140 and a pull rod 150, and a clamping assembly 130 for clamping the outer shape of the watch case, which is composed of a retracting clamp 170 and a retracting clamp sleeve 180. It can meet different processing techniques and processing requirements, adapt to various processing operations, such as drilling, turning / milling, etc., and provide flexibility and versatility for the processing of the watch case.

[0066] In summary, the watch case processing fixture of the utility model adapts to watch cases of different sizes through the clamping jaws, and the clamping jaws are installed on the movable second component or on the first component fixed on the base, so as to clamp the outer shape or inner shape of the watch case respectively. And the clamping assembly composed of the first component and the second component can be disassembled from the base, and it is simple and convenient to switch the clamping assembly according to the processing requirements. The lock core is threadedly connected to the second component, and the relative displacement between the first component and the second component is achieved by pushing the rotation of the lock core, so that the clamping jaws are opened or closed. The structure is simple and easy to operate, and the watch case parts can be quickly clamped and fixed. It can also provide high-precision positioning and fixing, ensure that the watch case maintains a stable position and posture during the processing, provide higher processing accuracy, stability and applicability, etc., and can meet the processing requirements of watch cases of different shapes and sizes.

[0067] The above embodiments are not exhaustive enumerations based on the present invention, and there may be multiple other implementations not listed. Any replacement and improvement made without violating the concept of the present invention shall fall within the protection scope of the present invention.

Claims

1. A watch case processing fixture, characterized in that: include: A base, a lock cylinder and at least one clamping assembly; A cavity is provided in the base, the cavity includes a first connecting portion and a clearance area, and a notch is provided on the side wall of the base; The clamping assembly comprises a first member and a second member, the first member is provided with a second connecting portion, the first connecting portion can be coupled with the second connecting portion to detachably mount the first member on the base, and the first member is provided with a channel along its axial direction; A threaded rod is provided at one end of the second member, and the second member can pass through the first member along the channel and at least a portion of the threaded rod is exposed outside the first member; The first member or the second member is provided with a clamping claw for clamping the watch case; The lock core can be installed in the clearance area in a clearance fit manner, a threaded through hole matching with the threaded rod is provided in the lock core, and at least two grooves are provided on the side wall of the lock core along the circumferential direction; When the lock core is installed in the clearance area and the second component is threadedly connected to the lock core, under the action of the force applied to the groove, the second component can move linearly relative to the first component to open or close the clamping jaws.

2. The watch case processing fixture according to claim 1, characterized in that: Also included is a force rod, which can pass through the notch and extend into the groove.

3. The watch case processing fixture according to claim 1, characterized in that: A first inclined surface is provided on the inner wall of the first component at one end opposite to the second connecting portion, and a second inclined surface is provided on the outer wall of the second component at one end opposite to the threaded rod. The second inclined surface can be attached to and slide relative to the first inclined surface.

4. The watch case processing fixture as claimed in claim 3, characterized in that: The clamp is arranged on the two components and is located at an end opposite to the threaded rod. The outer wall of the clamp is provided with the second inclined surface. When the second component moves linearly toward the threaded rod relative to the first component, the clamp is retracted.

5. The watch case processing fixture as claimed in claim 3, characterized in that: The clamp is arranged on the one component and is located at an end opposite to the second connecting portion. The first inclined surface is arranged on the inner wall of the clamp. When the second component moves linearly toward the threaded rod relative to the first component, the clamp is opened.

6. The watch case processing fixture as claimed in claim 3, characterized in that: The second inclined surface is configured to be interference fit with the first inclined surface.

7. The watch case processing fixture according to claim 1, characterized in that: The first connection portion is a thread provided on the inner wall of the base, and the second connection portion is a thread provided on one end of the first component.

8. The watch case processing fixture according to claim 1, characterized in that: Threads are provided at both ends of the inner wall of the base, and the clearance area is formed between the threads at both ends. A limiting step is provided on the end of the clearance area away from the first connecting part.

9. The watch case processing fixture according to claim 1, characterized in that: The distance between the bottom end of the notch and the top end of the notch is smaller than the height of the lock core.

10. The watch case processing fixture according to any one of claims 1 to 3, characterized in that: A first clamping assembly and a second clamping assembly are provided, wherein the first component of the first clamping assembly is an expanding clamp, the second component of the first clamping assembly is a pull rod, the top end of the expanding clamp is provided with the clamping claw, and the clamping claw is used to clamp the inner wall of the watch case; the first component of the second clamping assembly is a retracting clamp sleeve, the second component of the second clamping assembly is a retracting clamp, the top end of the retracting clamp is provided with the clamping claw, and the clamping claw is used to clamp the outer wall of the watch case.

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