Impact resistance testing tool for mechanical movement and assembling method of impact resistance testing tool

Abstract

A mechanical movement shock resistance testing tool comprises a testing supporting plate, a testing base plate, a swing clamping plate, a shock absorption unit and a limiting assembly, and the testing supporting plate is provided with at least one mounting hole; the test substrate is fixed in the mounting hole, the upper surface of the test substrate is provided with a groove for bearing the balance wheel, the bottom surface of the groove is provided with a sinking groove for bearing the double discs, the bottom surface of the sinking groove is provided with a middle hole for inserting a lower shaft tip of the balance shaft, and the bottom surface of the sinking groove is provided with a positioning hole for inserting a disc nail; the swing clamping plate is fixed on the test substrate and forms a cantilever above the groove; the shock absorption unit comprises a shock absorber arranged on the cantilever, and an insertion hole capable of enabling an upper shaft tip of the pendulum shaft to enter a center hole of the shock absorber is formed in the lower surface of the shock absorber; the limiting assembly comprises an outer pile and an inner clamp which are fixedly connected with the shock absorber, the bottom of the outer pile is provided with a first crack used for penetrating and fixing the tail end of the hairspring, and the bottom of the inner clamp is provided with a second crack penetrating and connecting the arc portion of the outermost end of the hairspring. The invention further discloses an assembling method of the mechanical movement impact resistance testing tool.

Description

Technical Field

[0001] The invention relates to the technical field of watch performance testing, and in particular to a mechanical movement impact resistance testing tool and an assembling method thereof. Background Art

[0002] The speed regulating system is the core part of a mechanical watch, which is equivalent to the "heart" of the human body and directly determines the performance of a mechanical watch. The speed regulating system is mainly composed of a hairspring and a balance wheel. The hairspring is an elastic element. The hairspring generates a stable oscillation cycle through vibration to determine the accuracy of the watch. For a mechanical watch, the basic requirements for the hairspring include stable elastic properties, less elastic hysteresis, smaller thermal expansion coefficient, good anti-magnetic and anti-corrosion properties, equal pitch, and the center of gravity of the hairspring should be consistent with its geometric center as much as possible. However, due to the daily wear of mechanical watches, they may encounter bumps or even falls from high altitudes and external impacts. The above impacts will affect the speed regulating system, especially the slender hairspring may be subjected to plastic deformation due to the impact force that exceeds its tolerance, thereby affecting the accuracy of the watch. At present, the hairspring needs to be tested for its impact resistance before leaving the factory. Due to the limitations of the test methods and equipment, it is often necessary to use a finished mechanical movement for impact testing. The remaining components on the movement are easily damaged when impacted, thereby increasing the production and testing costs of the watch. Summary of the invention

[0003] Based on this, it is necessary to provide a mechanical movement impact resistance test tool and its assembly method to address the above-mentioned deficiencies. The tool can be used to clamp the watch speed regulation assembly to perform an impact resistance test on the speed regulation assembly. The tool does not need to use a finished mechanical movement for impact testing, thus avoiding losses caused by damage to the movement.

[0004] A mechanical movement anti-impact capability testing tool is used to test the anti-impact capability of a speed regulating component, the speed regulating component includes a balance wheel, a balance shaft passing through the middle of the balance wheel, a hairspring located above the balance wheel and sleeved on the balance shaft, a double disc located below the balance wheel and sleeved on the balance shaft, and a disc nail fixed on the double disc and facing away from the balance wheel and extending downward. The mechanical movement anti-impact capability testing tool includes a test support plate and at least one test unit, the test support plate is provided with at least one mounting hole corresponding to the test unit, the inner wall of the mounting hole is provided with a step forming a support portion; the test unit includes:

[0005] A test substrate, the test substrate is received in the mounting hole and fixedly connected to the upper surface of the step, a groove for receiving and fixing the balance wheel is provided on the upper surface of the test substrate, a recess for receiving the double disc is provided at the center of the bottom surface of the groove, a middle hole penetrating the lower surface of the test substrate and used for inserting the lower shaft tip of the balance shaft is provided at the center of the bottom surface of the recess, and a positioning hole penetrating the lower surface of the test substrate and used for inserting the disc nail is provided on the bottom surface of the recess beside the middle hole;

[0006] A swing clamp, the swing clamp is fixed on the upper surface of the test substrate, and the swing clamp has a cantilever suspended above the groove, and the cantilever is provided with a test hole penetrating the upper and lower surfaces of the cantilever;

[0007] A shock absorbing unit, the shock absorbing unit comprising a shock absorber whose lower portion is inserted into the test hole and is limitedly matched with the swing clamp in the vertical direction, and a plug hole for passing the upper shaft tip of the swing shaft through the lower surface of the shock absorber so that the upper shaft tip of the swing shaft enters the center hole of the shock absorber;

[0008] The limiting assembly includes an outer pile located on the side of the balance cock and fixedly connected to the shock absorber through an outer pile ring, and an inner clamp located on the side of the balance cock and fixedly connected to the shock absorber through a speed needle, a first slit for passing and fixing the end of the hairspring is formed at the bottom of the outer pile, and a second slit for passing the outermost arc portion of the hairspring is formed at the bottom of the inner clamp.

[0009] In one of the embodiments, a plurality of countersunk holes are evenly arranged at the edge of the upper surface of the test substrate, and the mechanical movement impact resistance test tooling also includes a plurality of first fixing screws, each of which passes through each countersunk hole and is inserted into the step.

[0010] In one embodiment, a plurality of first threaded holes surrounding the groove are evenly opened on the upper surface of the test substrate adjacent to the groove, and the mechanical movement impact resistance test tooling also includes a plurality of second fixing screws, each of the second fixing screws is inserted into each of the first threaded holes one by one, and the lower surface of the screw head of the second fixing screw abuts against the edge of the balance wheel.

[0011] In one embodiment, a second threaded hole and a limiting hole / groove located next to the second threaded hole are opened on the upper surface of the test substrate, and the mechanical movement impact resistance test tooling also includes a fixing screw that passes through a pendulum clamp and is inserted into the second threaded hole to connect the pendulum clamp and the test substrate, and a limiting pin inserted into the limiting hole / groove is fixed on the lower surface of the pendulum clamp.

[0012] The present invention also discloses an assembly method for the above-mentioned mechanical movement impact resistance test tool, comprising the following steps:

[0013] S1. Fix the test substrate on the step in the mounting hole of the test support plate;

[0014] S2, assembling the balance wheel, the balance shaft, the hairspring, the double discs and the disc nails into a speed regulating assembly, and placing the speed regulating assembly on the test substrate, so that the balance wheel abuts against the bottom surface of the groove and is fixed in the groove, the upper part of the double disc abuts against the bottom surface of the groove, the lower shaft tip of the balance shaft penetrates into the middle hole and the disc nail is inserted into the positioning hole;

[0015] S3, fix the outer pile on the shock absorber through the outer pile ring, fix the inner clamp on the shock absorber through the speed needle, install the shock absorber in the test hole of the swing clamp, and fix the swing clamp on the test base plate, so that the shaft tip of the swing shaft enters the center hole of the shock absorber through the plug hole of the shock absorber;

[0016] S4, pass the outermost arc portion of the hairspring through the second slit at the bottom of the inner clamp, pass the end of the hairspring through the first slit at the bottom of the outer pile, and fix the end of the hairspring in the first slit of the outer pile by glue.

[0017] The present invention also discloses a mechanical movement anti-impact capability testing tool, which is used for testing the anti-impact capability of a speed regulating component. The speed regulating component includes a balance wheel, a balance shaft passing through the middle of the balance wheel, a hairspring located above the balance wheel and sleeved on the balance shaft, a double disc located below the balance wheel and sleeved on the balance shaft, and a disc nail fixed on the double disc and extending downwardly away from the balance wheel. The mechanical movement anti-impact capability testing tool includes a test support plate and at least one test unit. The test support plate is provided with at least one mounting hole corresponding to the test unit one by one, and the inner wall of the mounting hole is provided with a step forming a support portion; the test unit includes:

[0018] A test substrate, the test substrate is received in the mounting hole and fixedly connected to the upper surface of the step, the upper surface of the test substrate is provided with a groove for receiving the balance wheel and providing a swinging space for the balance wheel, and a middle hole is provided at the center of the bottom surface of the groove;

[0019] A swing clamp, the swing clamp is fixed on the upper surface of the test substrate, and the swing clamp has a cantilever suspended above the groove, and the cantilever is provided with a test hole penetrating the upper and lower surfaces of the cantilever;

[0020] A shock absorbing unit, the shock absorbing unit comprising a first shock absorber whose lower portion is inserted into the test hole and cooperates with the swing clamp in a vertical direction, and a second shock absorber fixed in the middle hole, wherein a first plug hole for passing through the upper shaft tip of the swing shaft so that the upper shaft tip of the swing shaft enters the center hole of the first shock absorber is formed on the lower surface of the first shock absorber, and a second plug hole for passing through the lower shaft tip of the swing shaft so that the lower shaft tip of the swing shaft enters the center hole of the second shock absorber is formed on the upper surface of the second shock absorber;

[0021] The limiting assembly includes an outer pile located beside the balance cock and fixedly connected to the first shock absorber through an outer pile ring, and an inner clamp located beside the balance cock and fixedly connected to the first shock absorber through a speed needle, a first slit for passing through and fixing the end of the hairspring is formed at the bottom of the outer pile, and a second slit for passing through the outermost arc portion of the hairspring is formed at the bottom of the inner clamp.

[0022] In one of the embodiments, a plurality of countersunk holes are evenly formed at the edge of the upper surface of the test substrate, and the mechanical movement impact resistance test tooling also includes a plurality of machine fixing screws, each of which passes through each countersunk hole and is inserted into the step.

[0023] In one embodiment, a fixing threaded hole and a limiting hole / groove located next to the fixing threaded hole are formed on the upper surface of the test substrate, and the mechanical movement impact resistance test tooling also includes a fixing screw that passes through a pendulum clamp and is inserted into the fixing threaded hole to connect the pendulum clamp and the test substrate, and a limiting pin that is inserted into the limiting hole / groove is fixed on the lower surface of the pendulum clamp.

[0024] In one of the embodiments, a glue layer for fixing the end of the hairspring is provided in the first gap.

[0025] The present invention also discloses an assembly method for the above-mentioned mechanical movement impact resistance test tool, comprising the following steps:

[0026] S1. Fix the test substrate on the step in the mounting hole of the test support plate;

[0027] S2, assembling the balance wheel, the balance shaft, the hairspring, the double discs and the disc nails into a speed regulating assembly, and placing the speed regulating assembly on the test substrate, so that the balance wheel enters the groove, the lower shaft tip of the balance shaft penetrates into the middle hole and enters into the center hole of the second shock absorber through the second plug hole of the second shock absorber;

[0028] S3, fixing the outer pile on the first shock absorber through the outer pile ring, fixing the inner clamp on the first shock absorber through the speed needle, installing the first shock absorber in the test hole of the swing clamp, and fixing the swing clamp on the test base plate, so that the upper shaft tip of the swing shaft enters the center hole of the first shock absorber through the first plug hole of the first shock absorber;

[0029] S4, pass the outermost arc portion of the hairspring through the second slit at the bottom of the inner clamp, pass the end of the hairspring through the first slit at the bottom of the outer pile, and fix the end of the hairspring in the first slit of the outer pile by glue.

[0030] The mechanical movement impact resistance testing tool and assembly method of the present invention are implemented to install the speed regulating component on the test substrate, control the speed regulating component through the shock absorber, and limit the state of the balance wheel on the speed regulating component, so as to simulate the use scenarios of the speed regulating component in different states, so as to perform corresponding impact resistance tests on the hairspring of the speed regulating component, and then facilitate the subsequent improvement of the performance of the speed regulating component, especially the hairspring, according to the test results of the hairspring impact resistance, so that the hairspring can resist the impact force from the outside and ensure the travel accuracy of the mechanical watch. During the test, there is no need to use a finished mechanical movement for impact testing to avoid losses caused by damage to the movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A top view of a tool for testing the impact resistance of a mechanical movement in one embodiment of the present invention;

[0032] Figure 2 A cross-sectional structural diagram of a mechanical movement impact resistance testing tool in one embodiment of the present invention;

[0033] Figure 3 It is a flow chart of a method for assembling a tool for testing the impact resistance of a mechanical movement in one embodiment of the present invention;

[0034] Figure 4 A top view of a tool for testing the impact resistance of a mechanical movement in another embodiment of the present invention;

[0035] Figure 5 It is a cross-sectional structural diagram of a mechanical movement impact resistance testing tool in another embodiment of the present invention;

[0036] Figure 6 The present invention is a flowchart of a method for assembling a tool for testing the impact resistance of a mechanical movement in another embodiment of the present invention. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0038] This solution is aimed at the impact resistance test of the hairspring in the mechanical movement, focusing on the reliability of the mechanical movement in the test, so as to evaluate whether this mechanical movement meets the standards and is suitable for use. The reliability of the mechanical movement mainly refers to whether the internal structure of the mechanical movement will fail during the standard test. The structure and assembly method of the mechanical movement impact resistance test tool of the present invention are described below with reference to specific examples.

[0039] Example 1

[0040] Please combine Figure 1-2 The present embodiment discloses a mechanical movement impact resistance test tool, which is used to test the impact resistance of the speed regulating assembly, wherein the speed regulating assembly 10 is a part of the watch movement, and is used to control the timekeeping accuracy of the watch. The speed regulating assembly 10 includes a balance wheel 101, a balance shaft 102 passing through the middle of the balance wheel 101, a hairspring 103 located above the balance wheel 101 and sleeved on the balance shaft 102, a double disc 104 located below the balance wheel 101 and sleeved on the balance shaft 102, and a disc nail 105 fixed on the double disc 104 and facing away from the balance wheel 101 and extending downward. The hairspring 103 has an end and an outermost arc portion, both of which are used to provide a limit portion for the hairspring 103; the balance shaft 102 has an upper shaft tip and a lower shaft tip.

[0041] In this embodiment, the mechanical movement impact resistance test tool includes a test tray 100 and at least one test unit, and the test tray 100 is provided with at least one mounting hole 110 corresponding to the test unit, and the inner wall of the mounting hole 110 is provided with a step 111 forming a support portion, and the step 111 is used to provide a mounting portion for the test unit. In other words, the test tray 100 can accommodate multiple test units at the same time, so as to simultaneously perform impact resistance tests on multiple speed regulating components 10 to improve the test efficiency. The step 111 can be an annular boss fixed to the inner wall of the mounting hole 110, or a plurality of protrusions distributed along an annular path on the inner wall of the mounting hole 110 to provide a test substrate 200 installation point. The test unit includes a test substrate 200, a swing clamp 300, a shock absorbing unit 400 and a stop assembly 500, and the test substrate 200 is received in the mounting hole 110 and fixedly connected to the upper surface of the step 111 to prevent the test substrate 200 from loosening during the test operation. The upper surface of the test substrate 200 is provided with a groove 210 for receiving and fixing the balance wheel 101, and a recessed groove 220 for receiving the double disc 104 is provided at the center of the bottom surface of the groove 210, and a middle hole 230 is provided at the center of the bottom surface of the recessed groove 220, which penetrates the lower surface of the test substrate 200 and is used to insert the lower shaft tip of the balance shaft 102. It can be understood that the groove 210, the recessed groove 220 and the middle hole 230 together constitute a stepped hole penetrating the upper and lower surfaces of the test substrate 200. In this way, through the various levels of steps in the stepped hole (the bottom surface of the groove 210 and the bottom surface of the recessed groove 220), the corresponding parts of the speed regulation component 10 can be supported and limited. The bottom surface of the sink 220 is provided with a positioning hole 240 which penetrates the lower surface of the test substrate 200 and is used to insert the disc nail 105. By providing the positioning hole 240, the rotational freedom of the speed regulating assembly 10 can be limited by utilizing the mutual constraint between the disc nail 105 and the positioning hole 240, that is, the rotation of the speed regulating assembly 10 in the groove 210 is limited by the mutual cooperation between the disc nail 105 and the positioning hole 240. The swing clamp 300 is fixed on the upper surface of the test substrate 200, and the swing clamp 300 has a cantilever suspended above the groove 210. The cantilever is provided with a test hole which penetrates the upper and lower surfaces of the cantilever, and the central axis of the test hole is colinear with the central axis of the groove 210. The shock absorber unit 400 includes a shock absorber whose lower part is inserted into the test hole and is limitedly matched with the swing clamp plate 300 in the vertical direction. The shock absorber can be fixed in the test hole by screws or buckles, or the test hole can be designed as a stepped hole adapted to the outer contour of the shock absorber, and the shock absorber is supported by the sudden change part (shoulder) of the inner diameter of the stepped hole to achieve the limited matching of the shock absorber and the swing clamp plate in the vertical direction. The lower surface of the shock absorber is provided with a plug hole 410 for passing the upper shaft tip of the swing shaft 102 so that the upper shaft tip of the swing shaft 102 enters the center hole of the shock absorber.The position limiting assembly 500 is used to position the hairspring 103. The position limiting assembly 500 includes an outer pile 520 located beside the swing cock 300 and fixedly connected to the shock absorber through an outer pile ring 510, and an inner clamp 540 located beside the swing cock 300 and fixedly connected to the shock absorber through a speed needle 530. The bottom of the outer pile 520 is provided with a first slit 521 for passing and fixing the end of the hairspring 103, and the bottom of the inner clamp 540 is provided with a second slit 541 for passing the outermost arc portion of the hairspring 103. The speed needle 530 is a device for adjusting the timing speed of the watch, which can adjust the movement cycle of the balance wheel 101 by changing the effective length of the hairspring 103, thereby adjusting the timing speed of the watch. In this embodiment, the speed needle 530 is used to connect the shock absorber and the inner clamp 540, the speed needle 530 and the inner clamp 540 are fixed as a whole, and the outer pile 520 and the outer pile ring 510 are fixed as a whole.

[0042] The test support plate 100 is used to support each test unit so that multiple speed regulating components 10 are tested in batches. In the present embodiment, the test support plate 100 is a rectangular plate-like structure, which is made of aluminum alloy material with a lighter density. The upper surface of the test support plate 100 is provided with four mounting holes 110 arranged in a square array, and the cross section of the mounting hole 110 is circular. A disc-shaped test substrate 200 is installed on the step 111 of each mounting hole 110, so that four speed regulating components 10 are tested simultaneously. Preferably, the length of the test support plate 100 is 80mm and the width is 50mm. The diameter of the test substrate 200 is 20mm, and the test substrate 200 is made of metal copper. When actually processing, the diameter of the test substrate 200 and the length and width of the test support plate 100 can be determined according to the size comprehensive value of the mechanical movement speed regulating component 10 to be tested and the control mechanism (swing clamp 300, shock-absorbing unit 400 and limit assembly 500).

[0043] A plurality of countersunk holes 250 are evenly provided at the edge of the upper surface of the test substrate 200, and the mechanical movement impact resistance test tooling also includes a plurality of first fixing screws 600, each of which passes through each countersunk hole 250 and is inserted into the step 111. Furthermore, a screw hole connected to the countersunk hole 250 is provided on the step 111, and the bottom of the first fixing screw 600 is inserted into the screw hole and is threadedly connected to the step 111. By providing the countersunk hole 250 at the edge of the upper surface of the test substrate 200, when the first fixing screw 600 is locked in the countersunk hole 250 and the screw hole, the screw head of the first fixing screw 600 is located in the countersunk hole 250, so that the test substrate and the test pallet are fixedly connected and the test substrate 200 is prevented from loosening during the test process, while reducing the collision of the screw head of the first fixing screw with the operator. Preferably, in this embodiment, three countersunk holes 250 are evenly formed at the edge of the upper surface of the test substrate 200 , and the test substrate 200 is fastened to the test support plate 100 by three first fixing screws 600 .

[0044] Furthermore, the upper surface of the test substrate 200 is evenly provided with a plurality of first threaded holes 260 surrounding the groove 210 at locations adjacent to the groove 210. The mechanical movement anti-impact capability test fixture further includes a plurality of second fixing screws 700. Each second fixing screw 700 is inserted into each first threaded hole 260 in correspondence, and the lower surface of the screw head of the second fixing screw 700 abuts against the edge of the balance wheel 101. The balance wheel 101 of the speed regulating assembly 10 is restricted in the groove 210 by the second fixing screw 700 squeezing the edge of the balance wheel 101, so as to prevent the balance wheel 101 from rotating during the test and preventing the balance wheel 101 from falling out of the groove 210. At the same time, by fixing the balance wheel 101, the impact force of the test process can be directly applied to the hairspring 103 to test the bearing capacity of the hairspring 103. Preferably, three first threaded holes 260 surrounding the groove 210 are evenly opened on the upper surface of the test substrate 200 adjacent to the groove 210, and the balance wheel 101 is fixed in the groove 210 by three second fixing screws 700 to ensure that the balance wheel 101 is evenly stressed and prevent the balance wheel 101 from loosening.

[0045] In this embodiment, the upper surface of the test substrate 200 is provided with a second threaded hole 270 and a limiting hole / slot 280 located beside the second threaded hole 270, and the mechanical movement anti-impact capability test tool also includes a fixing screw 800 that penetrates the swing clamp 300 and is inserted into the second threaded hole 270 to connect the swing clamp 300 and the test substrate 200, and a limiting pin 301 inserted into the limiting hole / slot 280 is fixed on the lower surface of the swing clamp 300. That is, the swing clamp 300 is fixedly mounted on the test substrate 200 by the fixing screw 800, and at the same time, the swing clamp 300 is limited in rotational freedom by the mutual constraint of the limiting pin 301 and the limiting hole / slot 280, so as to prevent the swing clamp 300 from rotating on the test substrate 200. In addition, in this embodiment, a glue layer for fixing the end of the hairspring 103 is provided in the first slit 521, and the end of the hairspring 103 is fixed in the first slit 521 by the glue layer.

[0046] Please combine Figure 1-3 The present invention also discloses an assembly method for the above-mentioned mechanical movement impact resistance test tooling, which is suitable for the impact resistance test of the mechanical movement in the laboratory. The assembly method comprises the following steps:

[0047] S1 . Fix the test substrate 200 on the step 111 in the mounting hole 110 of the test pallet 100 .

[0048] In this embodiment, before the test substrate 200 is fixed to the test support plate 100, the aluminum alloy sheet is processed by a CNC machine to obtain a test support plate 100 with a rectangular plate structure of 80 mm in length and 50 mm in width, and four mounting holes 110 arranged in a square array are opened on the test support plate 100, and a corresponding screw hole is opened in each mounting hole 110. Subsequently, the metal copper sheet is processed by a CNC machine to obtain four test substrates 200 with a disc-shaped structure of 20 mm in diameter, and corresponding grooves 210, sinks 220, positioning holes 240, middle holes 230 and first threaded holes 260 are processed on the test substrate 200. After the test support plate 100 and the test substrate 200 are processed, the first fixing screws 600 are used to fix each test substrate 200 in each mounting hole 110 of the test support plate 100 one by one, and the thread of the first fixing screw 600 is selected to be S0.7.

[0049] S2, assemble the balance wheel 101, the balance shaft 102, the hairspring 103, the double disc 104 and the disc nail 105 into the speed regulating assembly 10, and place the speed regulating assembly 10 on the test substrate 200, so that the balance wheel 101 abuts against the bottom surface of the groove 210 and is fixed in the groove 210, the upper part of the double disc 104 abuts against the bottom surface of the groove 220, the lower shaft tip of the balance shaft 102 penetrates into the middle hole 230 and the disc nail 105 is inserted into the positioning hole 240, so as to limit the rotation of the speed regulating assembly 10. In this embodiment, the balance wheel 101 is limited in the groove 210 by three second fixing screws 700 to achieve the fixation of the balance wheel 101 in the groove 210, and the thread of the second fixing screw 700 is selected to be S0.7.

[0050] S3, fix the outer pile 520 to the shock absorber through the outer pile ring 510, fix the inner clamp 540 to the shock absorber through the speed needle 530, install the shock absorber in the test hole of the swing clamp 300, and fix the swing clamp 300 on the test substrate 200, so that the shaft tip of the swing shaft 102 enters the center hole of the shock absorber through the plug hole 410 of the shock absorber. In this embodiment, the limiting nail 301 at the bottom of the swing clamp 300 is inserted into the limiting hole / slot 280, and the swing clamp 300 is fixed to the test substrate 200 by the fixing screw 800.

[0051] S4. Pass the outermost arc portion of the hairspring 103 through the second slit 541 at the bottom of the inner clamp 540, pass the end of the hairspring 103 through the first slit 521 at the bottom of the outer stud 520, and fix the end of the hairspring 103 in the first slit 521 of the outer stud 520 by glue.

[0052] The above steps S2-S4 are repeated until all four test units are installed on the test pallet 100, and then the impact resistance test of the four speed regulating components 10 on the entire tooling is performed according to the standard process.

[0053] In this embodiment, the speed regulating assembly 10 is disposed on the test substrate 200 and the balance wheel 101 of the speed regulating assembly 10 is fixed, so that the impact force during the test directly acts on the hairspring 103, thereby testing the load-bearing capacity of the hairspring 103 to the limit.

[0054] Example 2

[0055] Please combine Figure 4-5 The present invention also discloses a mechanical movement anti-impact capability testing tool, which is used to test the anti-impact capability of a speed regulating assembly 10, wherein the speed regulating assembly 10 is a part of a watch movement and is used to control the timekeeping accuracy of the watch. The speed regulating assembly 10 includes a balance wheel 101, a balance shaft 102 passing through the middle of the balance wheel 101, a hairspring 103 located above the balance wheel 101 and sleeved on the balance shaft 102, a double disc 104 located below the balance wheel 101 and sleeved on the balance shaft 102, and a disc nail 105 fixed on the double disc 104 and facing away from the balance wheel 101 and extending downward. The hairspring 103 has an end and an outermost arc portion, both of which are used to provide a limit portion for the hairspring 103; the balance shaft 102 has an upper shaft tip and a lower shaft tip.

[0056] In this embodiment, the mechanical movement impact resistance test tool includes a test tray 100 and at least one test unit, and the test tray 100 is provided with at least one mounting hole 110 corresponding to the test unit, and the inner wall of the mounting hole 110 is provided with a step 111 forming a support portion, and the step 111 is used to provide a mounting portion for the test unit. In other words, the test tray 100 can accommodate multiple test units at the same time, so as to simultaneously perform impact resistance tests on multiple speed regulating components 10 to improve the test efficiency. The step 111 can be an annular boss fixed to the inner wall of the mounting hole 110, or a plurality of protrusions distributed along an annular path on the inner wall of the mounting hole 110 to provide a test substrate 200 installation point. The test unit includes a test substrate 200, a swing clamp 300, a shock-absorbing unit and a limit assembly 500, and the test substrate 200 is accommodated in the mounting hole 110 and fixedly connected to the upper surface of the step 111 to prevent the test substrate 200 from loosening during the test operation. The upper surface of the test substrate 200 is provided with a groove 210 for receiving the balance wheel 101 and providing a swinging space for the balance wheel 101, and a middle hole 230 is provided at the center of the bottom surface of the groove 210. That is to say, during the test, the balance wheel 101 can swing in the groove 210. The swing clamp 300 is fixed on the upper surface of the test substrate 200, and the swing clamp 300 has a cantilever suspended above the groove 210, and the cantilever is provided with a test hole penetrating the upper and lower surfaces of the cantilever, and the central axis of the test hole is colinear with the central axis of the groove 210. The shock absorbing unit includes a first shock absorber 420 whose lower part is inserted into the test hole and cooperates with the swing clamp 300 in the vertical direction, and a second shock absorber 430 fixed in the middle hole 230. The first shock absorber can be fixed in the test hole by screws or buckles, or the test hole can be designed as a stepped hole adapted to the outer contour of the first shock absorber, and the first shock absorber is supported by the sudden change of the inner diameter of the stepped hole (shoulder) to achieve the limited cooperation of the first shock absorber and the swing clamp in the vertical direction. Similarly, the middle hole can be designed as a stepped hole adapted to the outer contour of the second shock absorber, and the second shock absorber is supported by the sudden change of the inner diameter of the stepped hole (shoulder) to achieve the installation of the second shock absorber in the middle hole. The first shock absorber 420 has a first insertion hole 421 on the lower surface thereof for receiving the upper shaft tip of the swing shaft 102 so that the upper shaft tip of the swing shaft 102 enters the center hole of the first shock absorber 420, and the second shock absorber 430 has a second insertion hole 431 on the upper surface thereof for receiving the lower shaft tip of the swing shaft 102 so that the lower shaft tip of the swing shaft 102 enters the center hole of the second shock absorber 430. That is, in this embodiment, after the speed regulating assembly 10 is mounted on the test substrate 200, a shock absorber is disposed on the top and the bottom of the speed regulating assembly 10 respectively, so that the state of the speed regulating assembly 10 on the mechanical movement can be simulated through the joint action of the two shock absorbers.The position limiting assembly 500 is used to position the hairspring 103. The position limiting assembly 500 includes an outer pile 520 located beside the balance cock 300 and fixedly connected to the first shock absorber 420 through an outer pile ring 510, and an inner clip 540 located beside the balance cock 300 and fixedly connected to the first shock absorber 420 through a speed needle 530. A first slit 521 for passing and fixing the end of the hairspring 103 is provided at the bottom of the outer pile 520, and a second slit 541 for passing the outermost arc portion of the hairspring 103 is provided at the bottom of the inner clip 540. The speed needle 530 is a device for adjusting the timing speed of the watch, which can adjust the movement cycle of the balance wheel 101 by changing the effective length of the hairspring 103, thereby adjusting the timing speed of the watch. In this embodiment, the speed needle 530 is used to connect the shock absorber and the inner clip 540, and the speed needle 530 and the inner clip 540 are fixed as a whole, and the outer pile 520 and the outer pile ring 510 are fixed as a whole.

[0057] The test support plate 100 is used to support each test unit so that multiple speed regulating components 10 are tested in batches. In the present embodiment, the test support plate 100 is a rectangular plate-like structure, which is made of aluminum alloy material with a lighter density. The upper surface of the test support plate 100 is provided with four mounting holes 110 arranged in a square array, and the cross section of the mounting hole 110 is circular. A disc-shaped test substrate 200 is installed on the step 111 of each mounting hole 110, so that four speed regulating components 10 are tested simultaneously. Preferably, the length of the test support plate 100 is 80mm and the width is 50mm. The diameter of the test substrate 200 is 20mm, and the test substrate 200 is made of metal copper. When actually processing, the diameter of the test substrate 200 and the length and width of the test support plate 100 can be determined according to the size comprehensive value of the mechanical movement speed regulating component 10 to be tested and the control mechanism (swing clamp 300, shock-absorbing unit and limit assembly 500).

[0058] A plurality of countersunk holes 250 are evenly provided at the edge of the upper surface of the test substrate 200, and the mechanical movement impact resistance test tooling also includes a plurality of fixing screws 900, each fixing screw 900 correspondingly passes through each countersunk hole 250 and is inserted into the step 111. Furthermore, a screw hole connected to the countersunk hole 250 is provided on the step 111, and the bottom of the fixing screw 900 is inserted into the screw hole and is threadedly connected to the step 111. By providing the countersunk hole 250 at the edge of the upper surface of the test substrate 200, when the fixing screw 900 is locked in the countersunk hole 250 and the screw hole, the screw head of the fixing screw 900 is located in the countersunk hole 250, so that the fixing connection between the test substrate and the test pallet is realized, and the loosening of the test substrate 200 is prevented during the test, while reducing the collision of the screw head of the fixing screw with the operator. Preferably, in this embodiment, three countersunk holes 250 are evenly formed at the edge of the upper surface of the test substrate 200 , and the test substrate 200 is fastened to the test support plate 100 by three fixing screws 900 .

[0059] In this embodiment, the upper surface of the test substrate 200 is provided with a fixing threaded hole 201 and a limiting hole / slot 280 located beside the fixing threaded hole 201, and the mechanical movement anti-impact capability test tool also includes a fixing screw 800 that penetrates the swing clamp 300 and is inserted into the fixing threaded hole 201 to connect the swing clamp 300 and the test substrate 200, and a limiting pin 301 inserted into the limiting hole / slot 280 is fixed on the lower surface of the swing clamp 300. That is, the swing clamp 300 is fixedly mounted on the test substrate 200 by the fixing screw 800, and at the same time, the swing clamp 300 is limited in rotational freedom by the mutual constraint of the limiting pin 301 and the limiting hole / slot 280, so as to prevent the swing clamp 300 from rotating on the test substrate 200. In addition, in this embodiment, a glue layer for fixing the end of the hairspring 103 is provided in the first slit 521, and the end of the hairspring 103 is fixed in the first slit 521 by the glue layer.

[0060] Please combine Figure 4-6 The present invention also discloses an assembly method for the above-mentioned mechanical movement impact resistance test tooling, which is suitable for the impact resistance test of the mechanical movement in the laboratory. The assembly method comprises the following steps:

[0061] S1 . Fix the test substrate 200 on the step 111 in the mounting hole 110 of the test pallet 100 .

[0062] In this embodiment, before the test substrate 200 is fixed to the test support plate 100, the aluminum alloy sheet is processed by a CNC machine to obtain a test support plate 100 with a rectangular plate structure of 80 mm in length and 50 mm in width, and four mounting holes 110 arranged in a square array are provided on the test support plate 100, and corresponding screw holes are provided in each mounting hole 110. Subsequently, the metal copper sheet is processed by a CNC machine to obtain four test substrates 200 with a disc-shaped structure of 20 mm in diameter, and corresponding grooves 210, middle holes 230 and fixed threaded holes 201 are processed on the test substrate 200. After the test support plate 100 and the test substrate 200 are processed, each test substrate 200 is fixed in each mounting hole 110 of the test support plate 100 one by one by using a fixing screw 900, and the thread of the fixing screw 900 is selected to be S0.7.

[0063] S2. Assemble the balance wheel 101, the balance shaft 102, the hairspring 103, the double disc 104 and the disc nail 105 into a speed regulating assembly 10, and place the speed regulating assembly 10 on the test substrate 200, so that the balance wheel 101 enters the groove 210, and the lower shaft tip of the balance shaft 102 penetrates into the middle hole 230 and enters into the center hole of the second shock absorber 430 through the second plug hole 431 of the second shock absorber 430.

[0064] S3, fix the outer pile 520 to the first shock absorber 420 through the outer pile ring 510, fix the inner clamp 540 to the first shock absorber 420 through the speed pin 530, install the first shock absorber 420 in the test hole of the swing clamp 300, and fix the swing clamp 300 on the test substrate 200, so that the shaft tip of the swing shaft 102 enters the center hole of the first shock absorber 420 through the first plug hole 421 of the first shock absorber 420. In this embodiment, the limiting pin 301 at the bottom of the swing clamp 300 is inserted into the limiting hole / slot 280, and the swing clamp 300 is fixed to the test substrate 200 by the fixing screw 800.

[0065] S4. Pass the outermost arc portion of the hairspring 103 through the second slit 541 at the bottom of the inner clamp 540, pass the end of the hairspring 103 through the first slit 521 at the bottom of the outer stud 520, and fix the end of the hairspring 103 in the first slit 521 of the outer stud 520 by glue. At this time, the balance wheel 101 can swing normally driven by the hairspring 103.

[0066] The above steps S2-S4 are repeated until all four test units are installed on the test pallet 100, and then the impact resistance test of the four speed regulating components 10 on the entire tooling is performed according to the standard process.

[0067] In this embodiment, the speed regulating component 10 is set on the test substrate 200, and the speed regulating component 10 is controlled by the upper and lower shock absorbers to simulate the state of the speed regulating component 10 on the mechanical movement. After the speed regulating component 10 is subjected to impact force, the state of the hairspring 103 and the two shaft tips (upper shaft tip and lower shaft tip) of the balance shaft 102 of the speed regulating component 10 are verified to detect the impact resistance of the hairspring 103.

[0068] The above-mentioned mechanical movement impact resistance test tooling and assembly method install the speed regulating component 10 on the test substrate 200, control the speed regulating component 10 through the shock absorber, and limit the state of the balance wheel 101 on the speed regulating component 10, so as to simulate the use scenarios of the speed regulating component 10 in different states, so as to perform corresponding impact resistance tests on the hairspring 103 of the speed regulating component 10, and then facilitate the subsequent improvement of the performance of the speed regulating component 10, especially the hairspring 103, according to the impact resistance test results of the hairspring 103, so that the hairspring 103 can resist the impact force from the outside and ensure the travel accuracy of the mechanical watch. During the test, there is no need to use a finished mechanical movement for impact testing to avoid losses caused by damage to the movement.

[0069] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A mechanical movement impact resistance test tool, used for testing the impact resistance of a speed regulating assembly, the speed regulating assembly comprising a balance wheel, a balance shaft passing through the middle of the balance wheel, a hairspring located above the balance wheel and sleeved on the balance shaft, a double disc located below the balance wheel and sleeved on the balance shaft, and a disc nail fixed on the double disc and facing away from the balance wheel and extending downward, characterized in that: The mechanical movement impact resistance test tool comprises a test pallet and at least one test unit, wherein the test pallet is provided with at least one mounting hole corresponding to the test unit, and the inner wall of the mounting hole is provided with a step forming a support portion; the test unit comprises: A test substrate, the test substrate is received in the mounting hole and fixedly connected to the upper surface of the step, a groove for receiving and fixing the balance wheel is provided on the upper surface of the test substrate, a recess for receiving the double disc is provided at the center of the bottom surface of the groove, a middle hole penetrating the lower surface of the test substrate and used for inserting the lower shaft tip of the balance shaft is provided at the center of the bottom surface of the recess, and a positioning hole penetrating the lower surface of the test substrate and used for inserting the disc nail is provided on the bottom surface of the recess beside the middle hole; A swing clamp, the swing clamp is fixed on the upper surface of the test substrate, and the swing clamp has a cantilever suspended above the groove, and the cantilever is provided with a test hole penetrating the upper and lower surfaces of the cantilever; A shock absorbing unit, the shock absorbing unit comprising a shock absorber whose lower portion is inserted into the test hole and is limitedly matched with the swing clamp in the vertical direction, and a plug hole for passing the upper shaft tip of the swing shaft through the lower surface of the shock absorber so that the upper shaft tip of the swing shaft enters the center hole of the shock absorber; The limiting assembly includes an outer pile located on the side of the balance cock and fixedly connected to the shock absorber through an outer pile ring, and an inner clamp located on the side of the balance cock and fixedly connected to the shock absorber through a speed needle, a first slit for passing and fixing the end of the hairspring is formed at the bottom of the outer pile, and a second slit for passing the outermost arc portion of the hairspring is formed at the bottom of the inner clamp.

2. The mechanical movement impact resistance testing tool according to claim 1, characterized in that: A plurality of countersunk holes are evenly arranged at the edge of the upper surface of the test substrate. The mechanical movement impact resistance test fixture also includes a plurality of first fixing screws, each of which passes through each countersunk hole and is inserted into the step.

3. The mechanical movement impact resistance testing tool according to claim 1, characterized in that: The upper surface of the test substrate is evenly provided with a plurality of first threaded holes surrounding the groove adjacent to the groove. The mechanical movement impact resistance test tooling also includes a plurality of second fixing screws, each of which is inserted into each of the first threaded holes one by one, and the lower surface of the screw head of the second fixing screw is in contact with the edge of the balance wheel.

4. The mechanical movement impact resistance testing tool according to claim 1, characterized in that: A second threaded hole and a limiting hole / groove next to the second threaded hole are provided on the upper surface of the test substrate. The mechanical movement impact resistance test tooling also includes a fixing screw that passes through a pendulum clamp and is inserted into the second threaded hole to connect the pendulum clamp and the test substrate. A limiting pin inserted into the limiting hole / groove is fixed on the lower surface of the pendulum clamp.

5. An assembly method for the mechanical movement impact resistance test tool as claimed in any one of claims 1 to 4, characterized in that: The following steps are involved: S1. Fix the test substrate on the step in the mounting hole of the test support plate; S2, assembling the balance wheel, the balance shaft, the hairspring, the double discs and the disc nails into a speed regulating assembly, and placing the speed regulating assembly on the test substrate, so that the balance wheel abuts against the bottom surface of the groove and is fixed in the groove, the upper part of the double disc abuts against the bottom surface of the groove, the lower shaft tip of the balance shaft penetrates into the middle hole and the disc nail is inserted into the positioning hole; S3, fix the outer pile on the shock absorber through the outer pile ring, fix the inner clamp on the shock absorber through the speed needle, install the shock absorber in the test hole of the swing clamp, and fix the swing clamp on the test base plate, so that the shaft tip of the swing shaft enters the center hole of the shock absorber through the plug hole of the shock absorber; S4, pass the outermost arc portion of the hairspring through the second slit at the bottom of the inner clamp, pass the end of the hairspring through the first slit at the bottom of the outer pile, and fix the end of the hairspring in the first slit of the outer pile by glue.

6. A mechanical movement impact resistance test tool, used for testing the impact resistance of a speed regulating assembly, the speed regulating assembly comprising a balance wheel, a balance shaft passing through the middle of the balance wheel, a hairspring located above the balance wheel and sleeved on the balance shaft, a double disc located below the balance wheel and sleeved on the balance shaft, and a disc nail fixed on the double disc and extending downwardly away from the balance wheel, characterized in that: The mechanical movement impact resistance test tool comprises a test pallet and at least one test unit, wherein the test pallet is provided with at least one mounting hole corresponding to the test unit, and the inner wall of the mounting hole is provided with a step forming a support portion; the test unit comprises: A test substrate, the test substrate is received in the mounting hole and fixedly connected to the upper surface of the step, the upper surface of the test substrate is provided with a groove for receiving the balance wheel and providing a swinging space for the balance wheel, and a middle hole is provided at the center of the bottom surface of the groove; A swing clamp, the swing clamp is fixed on the upper surface of the test substrate, and the swing clamp has a cantilever suspended above the groove, and the cantilever is provided with a test hole penetrating the upper and lower surfaces of the cantilever; A shock absorbing unit, the shock absorbing unit comprising a first shock absorber whose lower portion is inserted into the test hole and cooperates with the swing clamp in a vertical direction, and a second shock absorber fixed in the middle hole, wherein a first plug hole for passing through the upper shaft tip of the swing shaft so that the upper shaft tip of the swing shaft enters the center hole of the first shock absorber is formed on the lower surface of the first shock absorber, and a second plug hole for passing through the lower shaft tip of the swing shaft so that the lower shaft tip of the swing shaft enters the center hole of the second shock absorber is formed on the upper surface of the second shock absorber; The limiting assembly includes an outer pile located beside the balance cock and fixedly connected to the first shock absorber through an outer pile ring, and an inner clamp located beside the balance cock and fixedly connected to the first shock absorber through a speed needle, a first slit for passing through and fixing the end of the hairspring is formed at the bottom of the outer pile, and a second slit for passing through the outermost arc portion of the hairspring is formed at the bottom of the inner clamp.

7. The mechanical movement impact resistance testing tool according to claim 6, characterized in that: A plurality of countersunk holes are evenly arranged at the edge of the upper surface of the test substrate. The mechanical movement impact resistance test fixture also includes a plurality of machine screws, each of which passes through each countersunk hole and is inserted into the step.

8. The mechanical movement impact resistance testing tool according to claim 6, characterized in that: The upper surface of the test substrate is provided with a fixed threaded hole and a limiting hole / slot located next to the fixed threaded hole. The mechanical movement impact resistance test tooling also includes a fixing screw that passes through a pendulum clamp and is inserted into the fixed threaded hole to connect the pendulum clamp and the test substrate. The lower surface of the pendulum clamp is fixed with a limiting pin that is inserted into the limiting hole / slot.

9. The mechanical movement impact resistance testing tool according to claim 6, characterized in that: A glue layer for fixing the end of the hairspring is arranged in the first gap.

10. An assembly method for the mechanical movement impact resistance test tool as claimed in any one of claims 6 to 9, characterized in that: The following steps are involved: S1. Fix the test substrate on the step in the mounting hole of the test support plate; S2, assembling the balance wheel, the balance shaft, the hairspring, the double discs and the disc nails into a speed regulating assembly, and placing the speed regulating assembly on the test substrate, so that the balance wheel enters the groove, the lower shaft tip of the balance shaft penetrates into the middle hole and enters into the center hole of the second shock absorber through the second plug hole of the second shock absorber; S3, fixing the outer pile on the first shock absorber through the outer pile ring, fixing the inner clamp on the first shock absorber through the speed needle, installing the first shock absorber in the test hole of the swing clamp, and fixing the swing clamp on the test base plate, so that the upper shaft tip of the swing shaft enters the center hole of the first shock absorber through the first plug hole of the first shock absorber; S4, pass the outermost arc portion of the hairspring through the second slit at the bottom of the inner clamp, pass the end of the hairspring through the first slit at the bottom of the outer pile, and fix the end of the hairspring in the first slit of the outer pile by glue.

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