Numerical control technology mechanical watchcase precision machining device

Abstract

The utility model relates to the technical field of watchcase production, and discloses a numerical control technology mechanical watchcase precision machining device which comprises a base station, an adjusting disc is arranged above the base station, a fixing cylinder is arranged above the adjusting disc, the middle end of the bottom of the fixing cylinder is hinged to the adjusting disc, and the middle end of the bottom of the fixing cylinder is hinged to the adjusting disc. The upper surface of the fixed cylinder is provided with a group of sliding grooves which are arranged in a circumferential manner, the interior of each sliding groove is slidably connected with a sliding block, and the top end of each sliding block is provided with a fixed column which is used for abutting against the inner wall of a watchcase. According to the numerical control technology mechanical watchcase precision machining device, the inclination angle of the fixing cylinder can be accurately adjusted through the hinge structure of the adjusting disc and the fixing cylinder in cooperation with independent telescopic control of symmetrical electric push rods, and the inclined hole machining requirements of special-shaped watchcases such as arc-shaped watchcases and inclined surface watchcases are met; the axis of the drill bit is aligned with the normal of the special-shaped surface of the workpiece, and the problem of cutter breakage caused by drill bit deviation during inclined hole machining is solved.

Description

Technical Field

[0001] This utility model relates to the field of watch case manufacturing technology, specifically to a CNC-based precision machining device for watch cases. Background Technology

[0002] Drilling is a crucial step in the manufacturing process of mechanical watch cases. Various holes on the watch case, such as crown holes, button holes, and screw holes, need to be machined using precise drilling equipment.

[0003] An existing patent (publication number: CN221909877U) discloses a drilling device for machining mechanical watch cases, including a base. The upper surface of the base has a mounting groove. A bracket is fixedly connected to the top of the base. An electric track one is fixedly connected to the top of the front surface of the bracket. A slider is disposed inside the electric track one. The bottom end of the slider is fixedly connected to an electric track two. A cylinder is disposed inside the electric track two. A motor is fixedly connected to the output end of the cylinder. A drill bit is fixedly connected to the output shaft of the motor. A fixing mechanism, including a turntable, is disposed inside the mounting groove. In this invention, the fixing mechanism ensures that the operator can fix the side wall of the mechanical watch case simply by turning a handle, achieving convenient fixing without contacting the machining area on the surface of the watch case.

[0004] The aforementioned processing device, through the setting of the fixing mechanism, ensures that the operator can fix the side wall of the mechanical watch case simply by turning the handle, achieving the effect of convenient fixing without contacting the surface processing area of ​​the mechanical watch case. However, some watch cases have irregular surfaces, so in order to fit the irregular surface during the drilling process, it is necessary to open oblique holes. The aforementioned drilling device cannot process oblique holes in the watch case, and its applicability is low. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a precision machining device for CNC mechanical watch cases, which has advantages such as oblique hole machining and solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a precision machining device for CNC mechanical watch cases, comprising a base, an adjustment plate arranged above the base, a fixed cylinder arranged above the adjustment plate, and the bottom middle of the fixed cylinder being hinged to the adjustment plate;

[0007] The upper surface of the fixed cylinder is provided with a set of circumferentially arranged sliding grooves. Each sliding groove is slidably connected to a slider, and the top of each slider is provided with a fixing post for abutting against the inner wall of the watch case.

[0008] Through the above solution, the hinged structure of the adjusting plate and the fixed cylinder, combined with the independent telescopic control of the symmetrical electric actuator, can precisely adjust the tilt angle of the fixed cylinder to meet the machining requirements of inclined holes in irregularly shaped watch cases such as arcs and slopes. Compared with the existing technology, which can only achieve vertical drilling, this application aligns the drill axis with the normal of the irregular surface of the workpiece, solving the problem of tool breakage caused by drill offset during inclined hole machining. The motor drives the irregular wheel to rotate, pushing the slider to move radially synchronously in the groove. Combined with the elastic reset of the compression spring and the reset rod, it can adapt to watch cases with different inner diameters. The fixed column and the slider are threadedly connected, supporting height adjustment. It is suitable for fixing watch cases with different hole depth requirements such as shallow holes and countersunk holes. The motor drives the rotating shaft to drive the fixed cylinder to rotate. In the scenario of continuous machining of holes evenly distributed around the circumference of the watch case, compared with the existing technology of adjusting the drill position by the electric track, it can effectively reduce the machining time.

[0009] Furthermore, a motor is fixedly installed inside the base, and a rotating shaft is fixedly connected to the output end of the motor. The other end of the rotating shaft is fixedly connected to the bottom of the rotating frame.

[0010] The above scheme, through the setting of the motor, can achieve the purpose of rotating the fixed cylinder, which facilitates the drilling work of holes in different areas.

[0011] Furthermore, two symmetrically arranged electric actuators are fixedly installed inside the adjustment disc, and the output ends of the two electric actuators respectively abut against the bottom of the adjacent fixed cylinder.

[0012] The above scheme allows for the adjustment of the angle of the fixed cylinder by controlling the output length of the electric actuator separately.

[0013] Furthermore, the inner top wall of the fixed cylinder is rotatably connected to an extrusion shaft, the outer surface of the extrusion shaft is fixedly connected to a shaped wheel, and the bottom of each slider is fixedly connected to a contact plate, with each contact plate contacting the shaped wheel.

[0014] Through the above scheme, by rotating the extrusion shaft, the shaped wheel can extrude the contact plate and drive the slider to move synchronously inside the slide groove, thereby achieving the purpose of fixing watch cases of different sizes.

[0015] Furthermore, a reset rod is rotatably connected between the left and right inner walls of each slide groove, and each slider is slidably sleeved with its adjacent reset rod. A compression spring is fixedly connected between one side of each slider and its adjacent inner wall of the slide groove, and each compression spring is sleeved with its adjacent reset rod.

[0016] The above solution, through the setting of the compression spring, can provide power for the slider to reset.

[0017] Furthermore, a motor is installed on the inner bottom wall of the fixed cylinder, and the output end of the motor is fixedly connected to the bottom end of the extrusion shaft.

[0018] The above solution, through the setting of the motor, can provide power for the rotation of the extrusion shaft.

[0019] Furthermore, each of the fixed posts is threadedly connected to the adjacent slider, and the fixed posts and sliders are connected by thread.

[0020] The above method allows for adjustment of the height of the fixing post, thus facilitating the fixing of watch cases with different hole depths.

[0021] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:

[0022] This CNC precision machining device for watch cases, through the hinged structure of the adjusting disc and the fixed cylinder, combined with the independent telescopic control of the symmetrical electric actuators, can precisely adjust the tilt angle of the fixed cylinder to meet the machining requirements of inclined holes in irregularly shaped watch cases such as arcs and bevels. Compared with the existing technology that can only achieve vertical drilling, this application aligns the drill axis with the normal of the irregular surface of the workpiece, solving the problem of tool breakage caused by drill offset during inclined hole machining. The motor drives the irregular wheel to rotate, pushing the slider to move radially synchronously in the groove. Combined with the elastic reset of the compression spring and the reset rod, it can be adapted to watch cases with different inner diameters. The fixed column and the slider are threadedly connected, supporting height adjustment. It is suitable for fixing watch cases with different hole depth requirements such as shallow holes and countersunk holes. The motor drives the rotating shaft to rotate the fixed cylinder. In the scenario of continuous machining of evenly distributed holes around the circumference of the watch case, compared with the existing technology of electric rail adjusting the drill position, it can effectively reduce the machining time. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this application;

[0024] Figure 2 This is a front view of the overall structure of this application;

[0025] Figure 3 This is a sectional view of the overall structure of this application from the front.

[0026] Figure 4 This is a top view of the fixed tube structure of this application;

[0027] Figure 5 This is a sectional view of the bottom view of the fixed tube structure in this application;

[0028] Figure 6 This is a structural diagram of the irregular wheel in this application.

[0029] In the picture:

[0030] 1. Base; 2. Adjustment plate;

[0031] 3. Fixed cylinder; 301. Slide groove;

[0032] 4. Slider; 5. Fixed column; 6. Motor; 7. Rotating shaft; 8. Electric push rod; 9. Extrusion shaft; 10. Irregular wheel; 11. Contact plate; 12. Reset rod; 13. Compression spring; 14. Motor. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] Please see Figure 1 , Figure 2 and Figure 3 This embodiment of a precision machining device for CNC mechanical watch cases includes a base 1, an adjustment plate 2 above the base 1, and a fixed cylinder 3 above the adjustment plate 2. The bottom middle of the fixed cylinder 3 is hinged to the adjustment plate 2. Through the hinge between the fixed cylinder 3 and the adjustment plate 2, the inclination of the upper surface of the fixed cylinder 3 can be easily adjusted, thereby facilitating the user to open oblique holes of different angles on the watch case surface and improving the overall applicability.

[0035] Please see Figure 1 , Figure 2 and Figure 3 A motor 6 is fixedly installed inside the base 1. The output end of the motor 6 is fixedly connected to a rotating shaft 7. The other end of the rotating shaft 7 is fixedly connected to the bottom of the rotating frame. The motor 6 enables the rotation of the fixed cylinder 3, facilitating the drilling of holes in different areas. Two symmetrically arranged electric actuators 8 are fixedly installed inside the adjusting plate 2. The output ends of the two electric actuators 8 respectively abut against the bottom of the adjacent fixed cylinder 3. By controlling the output length of the electric actuators 8 individually, the angle of the fixed cylinder 3 can be adjusted.

[0036] Please see Figure 4 , Figure 5 and Figure 6The upper surface of the fixed cylinder 3 is provided with a set of circumferentially arranged sliding grooves 301. Each sliding groove 301 is slidably connected to a slider 4. The top of each slider 4 is provided with a fixing post 5 for contacting the inner wall of the watch case. By moving the set of fixing posts 5 away from or close to each other, the inner wall of the dial can be fixed, which facilitates the drilling process. The inner top wall of the fixed cylinder 3 is rotatably connected to a pressing shaft 9. The outer surface of the pressing shaft 9 is fixedly connected to a shaped wheel 10. The bottom of each slider 4 is fixedly connected to a contact plate 11. Each contact plate 11 contacts the shaped wheel 10. By rotating the pressing shaft 9, the shaped wheel 10 can press the contact plate 11 and drive the slider 4 to move synchronously inside the sliding groove 301, so as to achieve the purpose of fixing watch cases of different sizes.

[0037] Please see Figure 4 , Figure 5 and Figure 6 Each fixed post 5 is threadedly connected to its adjacent slider 4. The height of the fixed post 5 can be adjusted through the threaded connection between the fixed post 5 and the slider 4, which facilitates the fixing of watch cases with different hole depths. A reset rod 12 is rotatably connected between the left and right inner walls of each slide groove 301. Each slider 4 is slidably sleeved with its adjacent reset rod 12. A compression spring 13 is fixedly connected between one side of each slider 4 and the inner wall of its adjacent slide groove 301. Each compression spring 13 is sleeved with its adjacent reset rod 12. The compression spring 13 provides power for the reset of the slider 4. A motor 14 is installed on the inner bottom wall of the fixed cylinder 3. The output end of the motor 14 is fixedly connected to the bottom end of the extrusion shaft 9. The motor 14 provides power for the rotation of the extrusion shaft 9.

[0038] This embodiment of a CNC precision machining device for watch cases utilizes a hinged structure between an adjusting disc 2 and a fixed cylinder 3, along with independent telescopic control of symmetrical electric actuators 8. This allows for precise adjustment of the tilt angle of the fixed cylinder 3, meeting the requirements for machining oblique holes in irregularly shaped watch cases such as arcs and bevels. Compared to existing technologies that can only achieve vertical drilling, this application aligns the drill bit axis with the normal of the workpiece's irregular surface, solving the problem of drill bit misalignment during oblique hole machining. The motor 14 drives the irregular wheel 10 to rotate, pushing the slider 4 to move synchronously radially within the groove 301. Combined with the elastic reset of the compression spring 13 and the reset rod 12, it can adapt to watch cases with different inner diameters. The fixed column 5 is threadedly connected to the slider 4, supporting height adjustment and suitable for fixing watch cases with different hole depth requirements such as shallow holes and countersunk holes. The motor 6 drives the rotating shaft 7 to rotate the fixed cylinder 3. In scenarios involving continuous machining of evenly distributed holes around the watch case, compared to the existing technology where electric tracks adjust the drill bit position, this effectively reduces machining time.

[0039] The working principle of the above embodiment is as follows: Through the hinge structure between the adjusting plate 2 and the fixed cylinder 3, the symmetrically arranged electric push rods 8 extend and retract independently, driving the fixed cylinder 3 to tilt around the hinge point, thereby adjusting the angle of the irregular surface of the watch case, aligning the drill bit axis with the normal of the surface to be processed, and the sliders 4 distributed on the top circumference of the fixed cylinder 3 move synchronously under the drive of the irregular wheel 10. The motor 14 drives the extrusion shaft 9 to rotate, and the irregular wheel 10 pushes the contact plate 11 at the bottom of the slider 4, causing the slider 4 to move radially along the slide groove 301, driving the fixed column 5 to press against the inner wall of the watch case. The compression spring 13 and the reset rod 12 can realize the automatic reset of the slider 4. The fixed column 5 can be finely adjusted in height through the threaded connection to meet the differentiated fixing requirements such as countersunk holes and shallow holes. The motor 6 inside the base 1 drives the rotating shaft 7 to rotate the fixed cylinder 3 and the watch case, realizing the continuous processing of circumferentially distributed holes such as crown holes and screw holes.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precision machining device for mechanical watch cases using CNC technology, comprising a base (1), characterized in that: An adjustment plate (2) is provided above the base (1), and a fixing cylinder (3) is provided above the adjustment plate (2). The bottom middle of the fixing cylinder (3) is hinged to the adjustment plate (2). The upper surface of the fixed cylinder (3) is provided with a set of circumferentially arranged sliding grooves (301), and each sliding groove (301) is slidably connected to a slider (4), and the top of each slider (4) is provided with a fixed post (5) for abutting against the inner wall of the watch case.

2. The precision machining device for mechanical watch cases using CNC technology according to claim 1, characterized in that: A motor (6) is fixedly installed inside the base (1), and a rotating shaft (7) is fixedly connected to the output end of the motor (6). The other end of the rotating shaft (7) is fixedly connected to the bottom of the rotating frame.

3. The precision machining device for mechanical watch cases using CNC technology according to claim 1, characterized in that: The regulating disc (2) has two symmetrically arranged electric actuators (8) fixedly installed inside. The output ends of the two electric actuators (8) abut against the bottom of the fixed cylinder (3) that is close to them.

4. The precision machining device for mechanical watch cases using CNC technology according to claim 1, characterized in that: The inner top wall of the fixed cylinder (3) is rotatably connected to an extrusion shaft (9), and the outer surface of the extrusion shaft (9) is fixedly connected to a shaped wheel (10). The bottom of each slider (4) is fixedly connected to a contact plate (11), and each contact plate (11) is in contact with the shaped wheel (10).

5. The precision machining device for mechanical watch cases using CNC technology according to claim 1, characterized in that: A reset rod (12) is rotatably connected between the left and right inner walls of each slide groove (301). Each slider (4) is slidably sleeved with the reset rod (12) that is close to it. A compression spring (13) is fixedly connected between one side of each slider (4) and the inner wall of the slide groove (301) that is close to it. Each compression spring (13) is sleeved with the reset rod (12) that is close to it.

6. The precision machining device for mechanical watch cases using CNC technology according to claim 1, characterized in that: A motor (14) is installed on the inner bottom wall of the fixed cylinder (3), and the output end of the motor (14) is fixedly connected to the bottom end of the extrusion shaft (9).

7. The precision machining device for mechanical watch cases using CNC technology according to claim 1, characterized in that: Each of the fixed posts (5) is threadedly connected to the adjacent slider (4).

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