Watchcase grinding and polishing machine
The watch case grinding and polishing machine addresses integration challenges by using a five-axis mechanism and dual grinding systems with torque control and detection, ensuring precise multi-angle processing and enhanced efficiency.
Patent Information
- Application Number
- CN202420986384.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-09
AI Technical Summary
Existing watch case processing machines face challenges in integrating rough and fine grinding processes while ensuring processing accuracy and adapting to multi-angle clamping for complex surface shapes.
A watch case grinding and polishing machine equipped with a five-axis driving mechanism, workpiece tensioning mechanism, and dual grinding mechanisms, along with tool setting detection and grinding torque control, to precisely position and grind watch cases at various angles and ensure accuracy.
The machine achieves precise grinding at multiple angles and positions, improving efficiency and accuracy through the use of five-axis control and dual grinding mechanisms with torque compensation, and automatic compensation based on product detection.
Smart Images
Figure CN222200088U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of grinding machine tools, in particular to a watch case grinding and polishing machine. Background Art
[0002] During the processing of the watch case, its surface needs to be ground and polished. In order to improve efficiency, the rough grinding and fine grinding processes need to be integrated together. However, after the two processes are combined, it is difficult to ensure the processing accuracy of each process. For the clamping of the workpiece, since the workpiece needs to adapt to the processing of the outer arc surface, it also requires control at multiple angles. The current clamping tooling is difficult to adapt to multi-angle processing, and the processing is difficult. Utility Model Content
[0003] The utility model aims to provide a watch case grinding and polishing machine to solve the problems mentioned in the background technology.
[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0005] A watch case grinding and polishing machine comprises a machine base and a clamping module and a grinding module which are arranged on the machine base in a front-rear distributed manner;
[0006] The clamping module includes a five-axis driving mechanism and a workpiece tensioning mechanism; the five-axis driving mechanism includes an X-axis driving device, a first Y-axis driving device, a Z-axis driving device, an A-axis swing driving device and a C-axis rotation driving device connected in sequence; the workpiece tensioning mechanism is connected to the power output end of the five-axis driving mechanism, and is used to internally support and tension the workpiece;
[0007] The grinding module comprises a base and two groups of grinding mechanisms which are installed on the base in left and right distributions; the grinding mechanism comprises a second Y-axis driving device, a first sliding plate, a second sliding plate, a grinding torque control device, a grinding wheel driving device and a grinding wheel; the second Y-axis driving device is installed on the base and the power output end is connected to the first sliding plate; the second sliding plate is connected to the top of the first sliding plate by sliding forward and backward; the grinding torque control device comprises a first motor, a gear and a rack; the first motor is installed at the rear of the first sliding plate and the power output end is connected to the gear; the rack is longitudinally installed at the rear of the second sliding plate and meshes with the gear; the grinding wheel driving device is installed at the front of the second sliding plate and the power output end is connected to the grinding wheel;
[0008] It also includes a tool setting detection mechanism installed on the machine base and located on the left and right sides of the grinding module; the tool setting detection mechanism includes a bracket and a tool setting instrument and a product detection sensor installed above the bracket.
[0009] Further description of the utility model, the Z-axis drive device includes a mounting frame, a second motor and a first screw rod; the mounting frame is installed on the power output end of the first Y-axis drive device; the second motor is installed above the mounting frame and the power output end is connected to the first screw rod; the A-axis swing drive device includes a lifting slide, a third motor and a rotating frame; the lifting slide is connected to the mounting frame for sliding up and down and is connected to the first screw rod through a first nut; the rotating frame is connected to the lifting slide for rotation around the X-axis; the third motor is installed on one side of the lifting slide and the power output end is connected to the rotating frame; the C-axis rotation drive device is a hollow rotating platform; the C-axis rotation drive device is installed at the bottom of the rotating frame.
[0010] Further description of the utility model, the workpiece tensioning mechanism includes a connecting shaft, an elastic tensioning clamp, a pull rod, a spring, a lower mounting ring, an upper spring sleeve, a limit nut and an ejection cylinder; the connecting shaft is fixed to the power output end of the C-axis rotation drive device; the elastic tensioning clamp is installed at the lower end of the connecting shaft; the pull rod is installed in the elastic tensioning clamp and the upper end passes through the top of the rotating frame; the lower mounting ring, spring, upper spring sleeve and limit nut are installed in sequence on the upper part of the pull rod from bottom to top; the ejection cylinder is installed on the rotating frame through a cylinder seat and is located above the pull rod; a bearing is provided on the rotating frame; the bearing is connected to the lower mounting ring.
[0011] Further description of the utility model also includes a wheel repair mechanism; the wheel repair mechanism includes a third Y-axis drive device, a third sliding plate and a grinding wheel dressing piece; the third Y-axis drive device is installed on the right side of the mounting frame and the power output end is connected to the third sliding plate; the grinding wheel dressing piece is installed on the rear side of the third sliding plate.
[0012] Further description of the utility model, the tool setting detection mechanism also includes a dust cover assembly; the dust cover assembly includes a Y-axis driving cylinder and a dust cover; the dust cover is arranged above the tool setting instrument and the product detection sensor; the Y-axis driving cylinder is installed on the bracket and the power output end is connected to the dust cover.
[0013] Further description of the utility model, the second Y-axis drive device includes a fourth motor and a second screw rod; the fourth motor is installed on the base and the power output end is connected to the second screw rod, and the second screw rod is rotatably connected to the base; the first sliding plate is connected to the second screw rod through a second nut.
[0014] Further description of the utility model, the grinding torque control device also includes a first motor seat, a shaft seat and a limit support shaft; the shaft seat and the first motor seat are installed on the first sliding plate and are respectively located on the left and right sides of the second sliding plate; the first motor is fixed on the first motor seat; the right part of the gear is installed on the power output end of the first motor through a keyway; the limit support shaft is rotatably connected to the shaft seat; the right end of the limit support shaft extends into the left part of the gear; a limit baffle is provided on the limit support shaft; the limit baffle is in contact with the left end face of the gear.
[0015] Further description of the utility model, the grinding wheel drive device includes a spindle box, a spindle, a driving wheel, a driven wheel, a synchronous belt, a fifth motor and a second motor seat; the spindle box is fixed on the second sliding plate; the spindle is rotatably connected to the spindle box; the driven wheel is installed at the rear end of the spindle; the fifth motor is installed above the spindle box through the second motor seat; the driving wheel is installed at the power output end of the fifth motor; the synchronous belt transmission is connected between the driving wheel and the driven wheel; the grinding wheel is installed at the front end of the spindle.
[0016] The beneficial effects of the utility model are:
[0017] This design uses the workpiece tensioning mechanism to tension the workpiece, and then controls the position of the workpiece through the five-axis drive mechanism to achieve grinding processing at different positions and angles. Two groups of grinding mechanisms are set, one for rough grinding and the other for fine grinding to improve work efficiency. In addition, the two groups of grinding mechanisms control the grinding torque through the grinding torque control device respectively, which has a compensation function for the polished workpiece, thereby ensuring the grinding accuracy of the two groups of grinding mechanisms for the workpiece. In the tool setting detection mechanism, the tool setting instrument is set to align the tool with the workpiece to ensure that the grinding position of each workpiece is the same. The product detection sensor detects the size error of the workpiece and provides a signal to the grinding module, which automatically compensates when grinding the workpiece to improve the grinding accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is the overall structure diagram of the utility model;
[0019] Figure 2 This is a structural diagram of the clamping module and the wheel repairing mechanism of the utility model in the rear view direction;
[0020] Figure 3 It is a partial structural diagram of the workpiece tensioning mechanism of the utility model;
[0021] Figure 4 It is a structural diagram of the grinding mechanism of the utility model;
[0022] Figure 5 This is a structural diagram of the connection between the grinding wheel driving device and the grinding wheel of the utility model;
[0023] Figure 6 It is a structural diagram of the tool setting detection mechanism of the utility model. DETAILED DESCRIPTION
[0024] The utility model is further described below in conjunction with the accompanying drawings:
[0025] like Figure 1 As shown, a watch case grinding and polishing machine comprises a machine base 1 and a clamping module 2 and a grinding module 3 which are arranged on the machine base 1 in a front-rear distributed manner;
[0026] like Figure 2-3 As shown, the clamping module 2 includes a five-axis driving mechanism 21 and a workpiece tensioning mechanism 22; the five-axis driving mechanism 21 includes an X-axis driving device 211, a first Y-axis driving device 212, a Z-axis driving device 213, an A-axis swing driving device 214 and a C-axis rotation driving device 215 which are connected in sequence; the workpiece tensioning mechanism 22 is connected to the power output end of the five-axis driving mechanism 21, and is used to internally support and tighten the workpiece; the workpiece is internally supported and tightened by the workpiece tensioning mechanism 22, and then the position of the workpiece is controlled by the five-axis driving mechanism 21, the X-axis driving device 211 controls the left and right movement of the workpiece, the first Y-axis driving device 212 controls the forward and backward movement of the workpiece, the Z-axis driving device 213 controls the up and down movement of the workpiece, the A-axis swing driving device 214 controls the swing of the workpiece around the X-axis direction, and the C-axis rotation driving device 215 controls the rotation of the workpiece, so as to realize grinding processing at different positions and angles.
[0027] The Z-axis driving device 213 includes a mounting frame 2131, a second motor 2132 and a first screw rod; the mounting frame 2131 is installed at the power output end of the first Y-axis driving device 212; the second motor 2132 is installed above the mounting frame 2131 and the power output end is connected to the first screw rod; the A-axis swing driving device 214 includes a lifting slide 2141, a third motor 2142 and a rotating frame 2143; the lifting slide 2141 is connected to the mounting frame 2131 by sliding up and down and is connected to the first screw rod through the first nut; the rotating frame 2143 It is connected to the lifting slide 2141 and rotates around the X-axis; the third motor 2142 is installed on one side of the lifting slide 2141 and the power output end is connected to the rotating frame 2143; the C-axis rotation drive device 215 is a hollow rotating platform; the C-axis rotation drive device 215 is installed at the bottom of the rotating frame 2143, the second motor 2132 drives the first screw to rotate, thereby controlling the lifting slide 2141 to move up and down, and the third motor 2142 controls the rotating frame 2143 to rotate, thereby driving the C-axis rotation drive device 215 installed on the rotating frame 2143 to swing around the X-axis.
[0028] The workpiece tensioning mechanism 22 includes a connecting shaft 221, an elastic tensioning fixture 222, a pull rod 223, a spring 224, a lower mounting ring 225, an upper spring sleeve 226, a limit nut 227 and an ejection cylinder 228; the connecting shaft 221 is fixed to the power output end of the C-axis rotation drive device 215; the elastic tensioning fixture 222 is installed at the lower end of the connecting shaft 221; the pull rod 223 is installed in the elastic tensioning fixture 222 and the upper end is passed through the top of the rotating frame 2143; the lower mounting ring 225, the spring 224, the upper spring sleeve 226 and the limit nut 227 are connected from the rotating frame 2143. The ejection cylinder 228 is installed on the upper part of the pull rod 223 from bottom to top; the ejection cylinder 228 is installed on the rotating frame 2143 through the cylinder seat and is located above the pull rod 223; a bearing is provided on the rotating frame 2143; the bearing is connected to the lower mounting ring 225, the ejection cylinder 228 pushes the pull rod 223 to move downward, the spring 224 is compressed, the pull rod 223 releases the elastic tensioning clamp 222, and the workpiece is placed on the elastic tensioning clamp 222, and then the ejection cylinder 228 is controlled to reset, the spring 224 drives the pull rod 223 to reset, and the pull rod 223 opens the elastic tensioning clamp 222 to tighten the workpiece.
[0029] like Figure 2 As shown, it also includes a wheel repairing mechanism 4; the wheel repairing mechanism 4 includes a third Y-axis driving device 41, a third sliding plate 42 and a grinding wheel dressing piece 43; the third Y-axis driving device 41 is installed on the right side of the mounting frame 2131 and the power output end is connected to the third sliding plate 42; the grinding wheel dressing piece 43 is installed on the rear side of the third sliding plate 42. When the grinding wheel 326 needs to be corrected, the position of the wheel repairing mechanism 4 is controlled by the X-axis driving device 211 and the first Y-axis driving device 212, and then the grinding wheel 326 of the grinding module 3 is trimmed by the wheel repairing mechanism 4.
[0030] like Figure 4-5As shown, the grinding module 3 includes a base 31 and two groups of grinding mechanisms 32 installed on the base 31 in a left and right distribution; the grinding mechanism 32 includes a second Y-axis driving device 321, a first sliding plate 322, a second sliding plate 323, a grinding torque control device 324, a grinding wheel driving device 325 and a grinding wheel 326; the second Y-axis driving device 321 is installed on the base 31 and the power output end is connected to the first sliding plate 322; the second sliding plate 323 is connected to the top of the first sliding plate 322 by sliding forward and backward; the grinding torque control device 324 includes a first motor 3241, a gear 3242 and a rack 3243; the first motor 3241 is installed at the rear of the first sliding plate 322 and the power output end is connected to the gear 3242; The rack 3243 is longitudinally installed at the rear of the second sliding plate 323 and meshes with the gear 3242; the grinding wheel driving device 325 is installed at the front of the second sliding plate 323 and the power output end is connected to the grinding wheel 326; the grinding mechanism 32 is provided with two groups, one group is used for rough grinding, and the other group is used for fine grinding, so as to improve work efficiency; the second Y-axis driving device 321 is used to control the forward and backward movement of the first sliding plate 322, and transport the grinding wheel 326 to the processing position, and the grinding torque control device 324 drives the gear 3242 to rotate through the first motor 3241, and the gear 3242 cooperates with the rack 3243 to control the forward and backward movement of the second sliding plate 323, control the grinding torque, have a compensation function for the grinding workpiece, and ensure the grinding accuracy of the two groups of grinding mechanisms 32 on the workpiece.
[0031] The second Y-axis driving device 321 includes a fourth motor 3211 and a second screw rod; the fourth motor 3211 is installed on the base 31 and the power output end is connected to the second screw rod, and the second screw rod is rotatably connected to the base 31; the first sliding plate 322 is connected to the second screw rod through the second nut, and the fourth motor 3211 drives the second screw rod to rotate and drive the first sliding plate 322 to move, with high control accuracy.
[0032] The grinding torque control device 324 also includes a first motor seat 3244, a shaft seat 3245 and a limit support shaft 3246; the shaft seat 3245 and the first motor seat 3244 are installed on the first sliding plate 322 and are respectively located on the left and right sides of the second sliding plate 323; the first motor 3241 is fixed on the first motor seat 3244; the right part of the gear 3242 is installed on the power output end of the first motor 3241 through a keyway; the limit support shaft 3246 is rotatably connected to the shaft seat 3245; the right end of the limit support shaft 3246 extends into the left part of the gear 3242; a limit baffle 3246-1 is provided on the limit support shaft 3246; the limit baffle 3246-1 contacts with the left end face of the gear 3242 to improve the transmission stability of the gear 3242.
[0033] The grinding wheel driving device 325 includes a spindle box 3251, a spindle 3252, a driving wheel 3253, a driven wheel 3254, a synchronous belt 3255, a fifth motor 3256 and a second motor seat 3257; the spindle box 3251 is fixed on the second sliding plate 323; the spindle 3252 is rotatably connected to the spindle box 3251; the driven wheel 3254 is installed at the rear end of the spindle 3252; the fifth motor 3256 is installed on the spindle box 3251 through the second motor seat 3257 The driving wheel 3253 is installed on the top of the axle box 3251; the driving wheel 3253 is installed at the power output end of the fifth motor 3256; the synchronous belt 3255 is connected between the driving wheel 3253 and the driven wheel 3254; the grinding wheel 326 is installed on the front end of the main shaft 3252, the fifth motor 3256 drives the driving wheel 3253 to rotate, the driving wheel 3253 drives the driven wheel 3254 to rotate through the synchronous belt 3255, and the driven wheel 3254 drives the grinding wheel 326 to rotate through the main shaft 3252.
[0034] like Figure 6 As shown, it also includes a tool setting detection mechanism 5 installed on the machine base 1 and located on the left and right sides of the grinding module 3; the tool setting detection mechanism 5 includes a bracket 51 and a tool setting instrument 52 and a product detection sensor 53 installed above the bracket 51. The tool setting instrument 52 is configured to perform tool setting with the workpiece to ensure that the grinding position of each workpiece is the same. The product detection sensor 53 is a GT sensor, which is used to detect the size error of the workpiece and provide a signal to the grinding module 3, so as to automatically compensate when grinding the workpiece and improve the grinding accuracy.
[0035] The tool setting detection mechanism 5 also includes a dust cover assembly 54; the dust cover assembly 54 includes a Y-axis driving cylinder 541 and a dust cover 542; the dust cover 542 is arranged above the tool setting instrument 52 and the product detection sensor 53; the Y-axis driving cylinder 541 is installed on the bracket 51 and the power output end is connected to the dust cover 542, which has a dustproof and waterproof protection effect.
[0036] The above description does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.
Claims
1. A watch case grinding and polishing machine, comprising a machine base and a clamping module and a grinding module arranged on the machine base in a front and rear distribution; characterized in that: The clamping module includes a five-axis driving mechanism and a workpiece tensioning mechanism; the five-axis driving mechanism includes an X-axis driving device, a first Y-axis driving device, a Z-axis driving device, an A-axis swing driving device and a C-axis rotation driving device connected in sequence; The workpiece tensioning mechanism is connected to the power output end of the five-axis driving mechanism and is used to internally support and tension the workpiece; The grinding module comprises a base and two groups of grinding mechanisms which are installed on the base in left and right distributions; the grinding mechanism comprises a second Y-axis driving device, a first sliding plate, a second sliding plate, a grinding torque control device, a grinding wheel driving device and a grinding wheel; the second Y-axis driving device is installed on the base and the power output end is connected to the first sliding plate; the second sliding plate is connected to the top of the first sliding plate by sliding forward and backward; the grinding torque control device comprises a first motor, a gear and a rack; the first motor is installed at the rear of the first sliding plate and the power output end is connected to the gear; the rack is longitudinally installed at the rear of the second sliding plate and meshes with the gear; the grinding wheel driving device is installed at the front of the second sliding plate and the power output end is connected to the grinding wheel; It also includes a tool setting detection mechanism installed on the machine base and located on the left and right sides of the grinding module; the tool setting detection mechanism includes a bracket and a tool setting instrument and a product detection sensor installed above the bracket.
2. A watch case grinding and polishing machine according to claim 1, characterized in that: The Z-axis driving device includes a mounting frame, a second motor and a first screw rod; the mounting frame is installed on the power output end of the first Y-axis driving device; the second motor is installed above the mounting frame and the power output end is connected to the first screw rod; the A-axis swing driving device includes a lifting slide, a third motor and a rotating frame; the lifting slide is connected to the mounting frame for sliding up and down and is connected to the first screw rod through a first nut; the rotating frame is connected to the lifting slide for rotation around the X-axis; the third motor is installed on one side of the lifting slide and the power output end is connected to the rotating frame; the C-axis rotation driving device is a hollow rotating platform; the C-axis rotation driving device is installed at the bottom of the rotating frame.
3. A watch case grinding and polishing machine according to claim 2, characterized in that: The workpiece tensioning mechanism includes a connecting shaft, an elastic tensioning clamp, a pull rod, a spring, a lower mounting ring, an upper spring sleeve, a limit nut and an ejection cylinder; the connecting shaft is fixed to the power output end of the C-axis rotation drive device; the elastic tensioning clamp is installed at the lower end of the connecting shaft; the pull rod is installed in the elastic tensioning clamp and the upper end passes through the top of the rotating frame; the lower mounting ring, spring, upper spring sleeve and limit nut are installed in sequence from bottom to top on the upper part of the pull rod; the ejection cylinder is installed on the rotating frame through a cylinder seat and is located above the pull rod; a bearing is provided on the rotating frame; the bearing is connected to the lower mounting ring.
4. A watch case grinding and polishing machine according to claim 2, characterized in that: It also includes a wheel repair mechanism; the wheel repair mechanism includes a third Y-axis drive device, a third sliding plate and a grinding wheel dressing piece; the third Y-axis drive device is installed on the right side of the mounting frame and the power output end is connected to the third sliding plate; the grinding wheel dressing piece is installed on the rear side of the third sliding plate.
5. The watch case grinding and polishing machine according to claim 1, characterized in that: The tool setting detection mechanism also includes a dust cover assembly; the dust cover assembly includes a Y-axis driving cylinder and a dust cover; the dust cover is arranged above the tool setting instrument and the product detection sensor; the Y-axis driving cylinder is installed on the bracket and the power output end is connected to the dust cover.
6. A watch case grinding and polishing machine according to claim 1, characterized in that: The second Y-axis driving device includes a fourth motor and a second screw rod; the fourth motor is installed on the base and the power output end is connected to the second screw rod, and the second screw rod is rotatably connected to the base; the first sliding plate is connected to the second screw rod through a second nut.
7. A watch case grinding and polishing machine according to claim 1, characterized in that: The grinding torque control device also includes a first motor seat, a shaft seat and a limit support shaft; the shaft seat and the first motor seat are installed on the first sliding plate and are respectively located on the left and right sides of the second sliding plate; the first motor is fixed on the first motor seat; the right part of the gear is installed on the power output end of the first motor through a keyway; the limit support shaft is rotatably connected to the shaft seat; the right end of the limit support shaft extends into the left part of the gear; a limit baffle is provided on the limit support shaft; the limit baffle is in contact with the left end face of the gear.
8. The watch case grinding and polishing machine according to claim 1, characterized in that: The grinding wheel driving device includes a spindle box, a spindle, a driving wheel, a driven wheel, a synchronous belt, a fifth motor and a second motor seat; the spindle box is fixed on the second sliding plate; the spindle is rotatably connected to the spindle box; the driven wheel is installed at the rear end of the spindle; the fifth motor is installed above the spindle box through the second motor seat; the driving wheel is installed at the power output end of the fifth motor; the synchronous belt transmission is connected between the driving wheel and the driven wheel; the grinding wheel is installed at the front end of the spindle.