Clamp and machining equipment

Abstract

The invention relates to the technical field of machining, in particular to a clamp and machining equipment, the clamp is arranged on a rotating mechanism, the rotating mechanism comprises a first rotating part and a second rotating part, the first rotating part can rotate around a first center line, and the second rotating part is arranged at the movable end of the first rotating part and can rotate around a second center line; the clamp comprises a base, a linear driving mechanism and a clamping assembly, the base is arranged at the movable end of the second rotating part, and the base and the second center line are coaxially arranged; the linear driving mechanism is arranged at the movable end of the first rotating part, and the linear driving mechanism is provided with a movable end capable of moving in the extending direction of the second center line; the clamping assembly is rotationally arranged at the moving end and used for positioning a to-be-machined workpiece; according to the fixture provided by the invention, the procedures of shape milling, drilling and side groove milling of the lens can be completed through one-time clamping, accumulative errors caused by multiple times of clamping in the machining process are reduced, and the machining precision is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical processing, and in particular to a clamp and processing equipment. Background Art

[0002] Eyeglass lenses are essential tools to improve the life, study and work of people with vision problems. From blanks to finished products, eyeglass lenses need to go through milling, drilling, milling side grooves and other steps.

[0003] At present, some companies mostly use desktop three-axis machines to glue lenses together for contour milling, and then use ordinary glasses processing machines equipped with professional fixtures to drill holes, mill side grooves, etc. This method is not only inefficient, but also with the increase of processes, errors may accumulate, making it difficult to ensure the accuracy of the lenses. Summary of the invention

[0004] The invention provides a clamp and processing equipment, which can complete the milling of the outer shape, drilling and side groove milling of the lens by one clamping, thereby reducing the cumulative error caused by multiple clamping during the processing and improving the processing accuracy.

[0005] In the first aspect, an embodiment of the present application provides a clamp, which is arranged on a rotating mechanism, and the rotating mechanism includes a first rotating part and a second rotating part, the first rotating part can rotate around a first center line, and the second rotating part is arranged at a movable end of the first rotating part and can rotate around the second center line; the clamp includes: a base, which is arranged at the movable end of the second rotating part, and the base is coaxially arranged with the second center line; a linear drive mechanism, which is arranged at the movable end of the first rotating part, and the linear drive mechanism has a movable end that can move along the extension direction of the second center line; and a clamping assembly, which is rotatably arranged at the movable end of the linear drive mechanism, the clamping assembly is coaxially arranged with the base, and the clamping assembly is used to position a workpiece to be processed; wherein the linear drive mechanism can drive the clamping assembly to move between a first position and a second position, and when the clamping assembly is in the first position, the workpiece to be processed is separated from the base; when the clamping assembly is in the second position, the clamping assembly and the base clamp the workpiece to be processed; the first center line and the second center line are arranged to intersect.

[0006] In a possible implementation, the linear drive mechanism includes a positioning member, and the positioning member is used to position the clamping assembly in the first position.

[0007] In a possible implementation, when the clamping assembly is in the second position, the positioning member releases the positioning of the clamping assembly.

[0008] In a possible implementation, the linear drive mechanism includes a power unit and a support beam arranged at an output end of the power unit, a moving end is arranged on the support beam, and a positioning member is arranged on the support beam.

[0009] In a possible implementation, a positioning hole is provided on the outer circumferential surface of the clamping assembly, and the positioning member can move along the radial direction of the clamping assembly so that the positioning member can be inserted into or withdrawn from the positioning hole.

[0010] In a possible implementation, the linear drive mechanism also includes a transmission assembly connected to the positioning member, the transmission assembly being used to drive the positioning member to insert into the positioning hole when the clamping assembly is in the first position, and to drive the positioning member to withdraw from the positioning hole when the clamping assembly is in the second position.

[0011] In one possible implementation, the transmission assembly includes: a cam, which is rotatably disposed on a support beam, the outer peripheral surface of the cam abuts against a block, the cam includes a first state and a second state, when the clamping assembly is in the first position, the cam is in the first state, and when the clamping assembly is in the second position, the cam is in the second state; a block, which is disposed at the movable end of the first rotating part, the block abuts against the outer peripheral surface of the cam, and is used to drive the cam to switch between the first state and the second state; and a traction member, one end of the traction member is rotatably connected to the eccentric position of the cam, and the other end is connected to the positioning member; wherein, when the cam is in the first state, the cam drives the positioning member to be inserted into the positioning hole through the traction member; when the cam is in the second state, the cam drives the positioning member to exit the positioning hole through the traction member.

[0012] In a possible implementation, the transmission assembly further includes an elastic member, which connects the support beam and the positioning member, and the elastic force applied by the elastic member to the positioning member is used to drive the end of the positioning member to be inserted into the positioning hole.

[0013] In a possible implementation manner, the traction member is one of a filament-like structure, a rope-like structure, a belt-like structure and a line-like structure.

[0014] In a second aspect, the present invention provides a processing device, comprising: a rotating mechanism; the above-mentioned fixture, which is arranged on the rotating mechanism; and a processing mechanism, which is used to process a workpiece to be processed on the fixture.

[0015] The clamp and processing equipment provided by the present invention position a workpiece to be processed, such as a lens, through a clamping assembly. When a linear drive mechanism drives the clamping assembly to a second position, the clamping assembly and the base cooperate and clamp the workpiece to be processed. The second rotating part can drive the base and the workpiece to be processed to rotate around a second center line. The first rotating part can drive the second rotating part, the base, the clamping assembly and the workpiece to be processed to rotate around the first center line. The position and angle of the workpiece to be processed in space can be adjusted, thereby achieving one-time clamping to complete the milling of the workpiece, drilling, and milling of the side grooves, thereby reducing the cumulative error caused by multiple clamping during the processing and improving the processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of a clamp and a first rotating part provided by the present invention.

[0018] Figure 2 It is a structural schematic diagram of a clamp provided by the present invention when the clamping component is in a first position.

[0019] Figure 3 It is a structural schematic diagram of a clamp provided by the present invention when the clamping assembly is in the second position.

[0020] Figure 4 yes Figure 3 A local enlarged structural schematic diagram; Figure 5 It is a structural schematic diagram of a rotating mechanism and a base provided by the present invention.

[0021] Reference numerals: a, first center line; b, lens; c, second center line; 1. First rotating part; 2. Second rotating part; 3. Base; 4. Linear drive mechanism; 41. Positioning member; 42. Power unit; 43. Support beam; 44. Transmission assembly; 441. Cam; 4411. Protrusion; 442. Stopper; 443. Traction member; 444. Elastic member; 5. Clamping assembly; 51. Positioning hole; 52. Clamping joint; 53. Bearing; 54. Adsorption assembly; 6. Protective cover. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Combine the following Figure 1-Figure 5A clamp provided by an embodiment of the present invention is described, which is arranged on a rotating mechanism, and the rotating mechanism includes a first rotating part 1 and a second rotating part 2. The first rotating part 1 can rotate around a first center line a, and the second rotating part 2 is arranged at the movable end of the first rotating part 1 and can rotate around a second center line c; the clamp includes: a base 3, a linear drive mechanism 4 and a clamping assembly 5. Among them: The base 3 is arranged at the movable end of the second rotating part 2, and the base 3 is coaxially arranged with the second center line c; specifically, the base 3 is arranged at the movable end of the second rotating part 2, and can rotate around the second center line c along with the movable end of the second rotating part 2, and the base 3 is used to cooperate with the clamping assembly 5 in the second position to realize effective fixation of the workpiece to be processed.

[0024] The linear drive mechanism 4 is disposed at a movable end of the first rotating part 1 , and the linear drive mechanism 4 has a movable end that can move along an extending direction of the second center line c.

[0025] The clamping assembly 5 is rotatably disposed at the moving end of the linear drive mechanism 4 . The clamping assembly 5 is coaxially disposed with the base 3 . The clamping assembly 5 is used to position the workpiece to be processed.

[0026] Among them, the linear drive mechanism 4 can drive the clamping assembly 5 to move between a first position and a second position. When the clamping assembly 5 is in the first position, the workpiece to be processed is separated from the base 3; when the clamping assembly 5 is in the second position, the clamping assembly 5 and the base 3 clamp the workpiece to be processed; the first center line a and the second center line c are arranged to intersect.

[0027] In the present invention, the workpiece to be processed, such as the lens b, is positioned by the clamping assembly 5. When the linear drive mechanism 4 drives the clamping assembly 5 to the second position, the clamping assembly 5 and the base 3 cooperate and clamp the workpiece to be processed. The second rotating part 2 can drive the base 3 and the workpiece to be processed to rotate around the second center line c. The first rotating part 1 can drive the second rotating part 2, the base 3, the clamping assembly 5 and the workpiece to be processed to rotate around the first center line a. The position and angle of the workpiece to be processed in space can be adjusted, so that the milling of the outer shape, drilling and milling of the side grooves of the workpiece to be processed can be completed by one clamping, thereby reducing the cumulative error caused by multiple clamping during the processing and improving the processing accuracy.

[0028] Specifically, the workpiece to be processed in the present invention is a lens b, and the clamping assembly 5 is used to adsorb and position the lens b, and then the clamping assembly 5 moves to the second position to cooperate with the base 3 to complete the clamping of the lens b. Thereafter, the processing angle of the lens b can be adjusted by rotating the first rotating part 1 and the second rotating part 2. The first center line a and the second center line c are arranged to intersect, so that the lens b can be positioned at any angle in space, which meets the needs of multi-faceted processing of the eyeglass lens b.

[0029] In the related technology, at present, some enterprises mostly use desktop three-axis machines to perform contour milling with glue, and then use ordinary glasses processing machines equipped with professional fixtures to drill holes, mill side grooves, etc. This method not only has low processing efficiency, but also with the increase of processes, errors may accumulate, resulting in the difficulty in ensuring the accuracy of lens b. Some high-end enterprises use high-end processing machines, which can realize the completion of lens b milling, drilling, milling side grooves and other processes with one device, and can achieve mass production. However, the price of high-end processing machines is expensive, and the initial investment is large. For some small optical shops or processing companies, the financial pressure to purchase equipment is relatively large. In addition, with the increase in market demand for glasses styles, when facing small batches and multiple varieties of personalized orders, its flexibility is relatively poor, and it is difficult to quickly adjust to meet the personalized needs of customers. For example, for some lenses b, there is a need for special patterns on the edges, which needs to be further processed with the help of engraving equipment to complete.

[0030] In the embodiment provided by the present invention, the clamping assembly 5 and the base 3 cooperate to complete the clamping and positioning of the lens b, and then the rotation of the first rotating part 1 can drive the lens b to rotate around the first center line a, and the rotation of the second rotating part 2 can drive the lens b to rotate around the second center line c, thereby realizing the positioning of the lens b at various processing angles. Compared with high-end processing machines, it can effectively reduce costs and initial investment, and in the face of small batches and multiple varieties of personalized processing orders, it can be flexibly adjusted, thereby quickly meeting the personalized needs of customers.

[0031] Specifically, the first center line a and the second center line c are arranged perpendicular to each other. If the first center line a is in the horizontal direction, the second center line c is in the vertical direction. The base 3 supports the lens b, which is convenient for clamping and fixing the lens b. Then, the processing angle of the lens b is adjusted by rotating the first rotating part 1 and the second rotating part 2. The clamping assembly 5 is controlled to move between the first position and the second position by the linear drive mechanism 4, so as to realize the rapid loading and unloading and precise clamping of the lens b. The base 3 and the clamping assembly 5 are arranged coaxially to ensure the concentricity and stability of the clamping. When the second rotating part 2 drives the base 3 to rotate around the second center line c, the base 3 and the clamping assembly 5 are arranged coaxially to ensure the accuracy of the lens b when rotating around the second center line c and reduce the eccentricity error.

[0032] In some embodiments, the linear drive mechanism 4 includes a positioning member 41, and the positioning member 41 is used to position the clamping assembly 5 in the first position.

[0033] In the present invention, the positioning member 41 is used to accurately position the clamping assembly 5 at the first position (separated position), thereby preventing the clamping assembly 5 from unnecessary rotation in a no-load state, thereby improving the workpiece loading and unloading efficiency and positioning accuracy.

[0034] Specifically, the positioning member 41 may be a latch, a positioning pin or other mechanical positioning structures, which cooperates with the clamping assembly 5 to form reliable positioning.

[0035] Moreover, when the clamping assembly 5 moves to the second position, the clamping assembly 5 cooperates with the base 3 to complete the clamping and fixing of the lens b. At this time, the clamping assembly 5 is positioned by the positioning member 41, thereby realizing the positioning of the initial position of the lens b, so as to find the adjustment reference when adjusting the position of the lens b later, thereby ensuring the positioning accuracy and processing accuracy of the lens b. Before performing different processing procedures of the lens b, the clamping assembly 5 can also be positioned by the positioning member 41, thereby positioning the initial position of the lens b, so as to ensure the accuracy of the subsequent processing procedures, and the lens b can be reset before each processing procedure, thereby reducing the cumulative error of the lens b caused by multiple positioning and improving the processing accuracy.

[0036] In some embodiments, when the clamping assembly 5 is in the second position, the positioning member 41 releases the positioning of the clamping assembly 5 .

[0037] In the present invention, the position change of the clamping assembly 5 automatically triggers the positioning release, avoiding manual operation; the positioning is automatically released when the lens b is clamped to avoid interference, realize the automation of the clamping process, and prevent the positioning member 41 from hindering the clamping process.

[0038] Specifically, when the clamping assembly 5 moves to the first position, that is, the lens b is separated from the base 3, the positioning member 41 automatically completes the positioning of the clamping assembly 5; when the clamping assembly 5 moves to the second position, and the lens b is in contact with the base 3, the clamping assembly 5 cooperates with the base 3 to complete the clamping and fixing of the lens b. At this time, the positioning member 41 automatically releases the positioning of the clamping assembly 5, so that the clamping assembly 5 can drive the lens b to rotate freely.

[0039] In some embodiments, the linear drive mechanism 4 includes a power unit 42 and a support beam 43 disposed at the output end of the power unit 42 , a moving end is disposed on the support beam 43 , and a positioning member 41 is disposed on the support beam 43 .

[0040] In the present invention, the power unit 42 drives the support beam 43 to move along the extension direction of the second center line c, and the support beam 43 is provided with a moving end, which can drive the clamping assembly 5 and the lens b on the support beam 43 to move along the extension direction of the second center line c, so as to realize the movement of the clamping assembly 5 between the first position and the second position. The positioning member 41 is provided on the support beam 43, and the positioning member 41 and the clamping assembly 5 move synchronously along the extension direction of the second center line c, so as to ensure that the positioning member 41 can smoothly position the clamping assembly 5.

[0041] Specifically, the power unit 42 uses a cylinder, which has a relatively simple structure and fewer moving parts. Under reasonable lubrication and air supply conditions, it can withstand high-frequency reciprocating motion. In addition, the cylinder occupies a relatively small space, which is convenient for installation and arrangement, and is also easier to cooperate and connect with other mechanical parts. Therefore, the invention uses a cylinder to drive the support beam 43 to move. The support beam 43 is set, and the clamping assembly 5 is set at the moving end of the support beam 43, and the moving end is far away from the power unit 42, so as to provide sufficient processing space around the clamping assembly 5 to avoid interference with the processing caused by the structure.

[0042] Optionally, the power unit 42 may also adopt other forms of linear drive, such as a hydraulic cylinder, an electric push rod, etc.

[0043] In a specific embodiment, the clamping assembly 5 includes a clamping joint 52, and the clamping joint 52 is rotatably connected to the support beam 43 through a bearing 53, wherein the bearing 53 is an angular contact ball bearing 53, which can ensure the accuracy under highly rotating conditions. An adsorption assembly 54 is provided on the clamping joint 52, and the adsorption assembly 54 is used to adsorb the lens b. The adsorption assembly 54 can be detachable from the clamping joint 52 to achieve rapid disassembly and assembly of the lens b. The adsorption assembly 54 includes a suction cup, a double-sided tape and an anti-slip film, the anti-slip film is connected to the suction cup through the double-sided tape, the anti-slip film is connected to the lens b, and the suction cup is detachably connected to the clamping joint 52 to achieve rapid assembly of the lens b.

[0044] In some embodiments, a positioning hole 51 is provided on the outer circumferential surface of the clamping assembly 5 , and the positioning member 41 can move along the radial direction of the clamping assembly 5 so that the positioning member 41 can be inserted into or withdrawn from the positioning hole 51 .

[0045] In the present invention, the positioning member 41 adopts a positioning pin, which moves along the radial direction of the clamping assembly 5 so that the end of the positioning pin is inserted into the positioning hole 51 to complete the positioning of the clamping assembly 5; the end of the positioning pin exits the positioning hole 51 to release the positioning of the clamping assembly 5. Using positioning pins to fix the workpiece to be processed not only accurately limits the translation and rotation of the workpiece in the plane, ensuring that the position error of the workpiece is extremely small each time it is placed, but also has the advantage of high repeatability positioning accuracy. In addition, the installation operation of the positioning pin is simple, and the positioning operation can be completed by simply inserting the pin into the corresponding pin hole, and subsequent maintenance, replacement and other operations are also relatively easy.

[0046] Specifically, the positioning pin includes a positioning section and an insertion head arranged at the end of the positioning section. The diameter of the positioning section is clearance matched with the inner diameter of the positioning hole 51. The insertion head is provided with a spherical surface or a frustum structure to facilitate the insertion of the end of the positioning pin into the positioning hole 51. Then, the positioning section of the positioning pin is matched with the positioning hole 51 to achieve precise positioning of the clamping assembly 5.

[0047] In some embodiments, the linear drive mechanism 4 also includes a transmission assembly 44 connected to the positioning member 41, and the transmission assembly 44 is used to drive the positioning member 41 to insert into the positioning hole 51 when the clamping assembly 5 is in the first position, and drive the positioning member 41 to withdraw from the positioning hole 51 when the clamping assembly 5 is in the second position.

[0048] In the present invention, the transmission component 44 associates the linear motion with the positioning action to realize the linkage control of the clamping process. The transmission component 44 realizes the automation of the positioning action, has good action synchronization, avoids interference, has a compact structure, and has reliable movement.

[0049] Specifically, when the clamping assembly 5 is located at the first position, the positioning member 41 is inserted into the positioning hole 51 to position the clamping assembly 5. When the clamping assembly 5 is switched from the first position to the second position, the positioning member 41 is driven to exit the positioning hole 51 by the transmission assembly 44. When the clamping assembly 5 reaches the second position, the positioning member 41 is completely withdrawn from the positioning hole 51. When the clamping assembly 5 is switched from the second position to the first position, the positioning member 41 is driven to insert into the positioning hole 51 by the transmission assembly 44. The switching of the clamping assembly 5 between the first position and the second position can be completed by a power unit 42, and the positioning and release of the clamping assembly 5 by the positioning member 41 can be completed at the same time. There is no need to set up two power units 42, which makes the structure more compact, reduces the occupied space at the support beam 43, and avoids interference when processing the lens b. In addition, the action synchronization is good, and there is no need to use a sensor to detect the position of the clamping assembly 5 and then control the movement of the positioning member 41 according to the position of the clamping assembly 5, thereby ensuring the reliability of the action.

[0050] In some embodiments, the transmission assembly 44 includes: a cam 441, a stopper 442 and a traction member 443. Among them: The cam 441 is rotatably disposed on the support beam 43, and the outer peripheral surface of the cam 441 abuts against the stopper 442. The cam 441 includes a first state and a second state. When the clamping assembly 5 is in the first position, the cam 441 is in the first state, and when the clamping assembly 5 is in the second position, the cam 441 is in the second state.

[0051] The stopper 442 is disposed at the movable end of the first rotating part 1 , and the stopper 442 abuts against the outer peripheral surface of the cam 441 , and is used to drive the cam 441 to switch between the first state and the second state.

[0052] One end of the traction member 443 is rotatably connected to the eccentric position of the cam 441 , and the other end is connected to the positioning member 41 .

[0053] When the cam 441 is in the first state, the cam 441 drives the positioning member 41 to be inserted into the positioning hole 51 through the pulling member 443 ; when the cam 441 is in the second state, the cam 441 drives the positioning member 41 to be withdrawn from the positioning hole 51 through the pulling member 443 .

[0054] In the present invention, the cam 441 is arranged on the support beam 43, and the stopper 442 is arranged at the movable end of the first rotating part 1. When the support beam 43 moves along the extension direction of the second center line c, displacement occurs between the cam 441 and the stopper 442, and the stopper 442 abuts against the outer peripheral surface of the cam 441. When the cam 441 moves up and down, the cam 441 is driven to rotate by being squeezed by the stopper 442. When the cam 441 rotates, the locating member 41 is driven to move through the traction member 443, thereby realizing the linkage between the driving of the locating member 41 and the movement of the support beam 43.

[0055] Specifically, the cam 441 and the block 442 can be linked by friction, and the block 442 can drive the cam 441 to rotate by friction; the block 442 can also generate a relative force after abutting against the outer peripheral surface of the cam 441, and push the cam 441 to rotate by the force.

[0056] Optionally, the stopper 442 can also be configured as a connecting rod, one end of which is connected to the movable end of the first rotating part 1, and the other end of the connecting rod is rotatably connected to the eccentric position of the cam 441. When the support beam 43 moves up and down, a relative displacement occurs between the cam 441 and the stopper 442, and the cam 441 is driven to rotate by the action of the connecting rod, thereby controlling the radial displacement of the positioning member 41 along the clamping assembly 5.

[0057] In some embodiments, the transmission assembly 44 further includes an elastic member 444 , which connects the support beam 43 and the positioning member 41 , and the elastic force applied by the elastic member 444 to the positioning member 41 is used to drive the end of the positioning member 41 to be inserted into the positioning hole 51 .

[0058] In the present invention, an elastic member 444 is provided between the support beam 43 and the positioning member 41. The elastic member 444 may be an elastic structure such as a spring. The elastic member 444 provides a pre-tightening force to ensure reliable positioning, compensate for system clearance, and improve positioning accuracy.

[0059] Specifically, a protrusion 4411 is provided on the cam 441, and the protrusion 4411 is squeezed with the stopper 442, thereby driving the cam 441 to rotate. When the support beam 43 moves from the first position to the second position, that is, when the support beam 43 moves downward, the stopper 442 is squeezed with the protrusion 4411 of the cam 441, thereby pushing the cam 441 to rotate counterclockwise by a certain angle, and the cam 441 pulls the positioning member 41 through the traction member 443, so that the end of the positioning member 41 withdraws from the positioning hole 51. When the support beam 43 moves from the second position to the first position, that is, when the support beam 43 moves upward, there is no relative squeezing between the stopper 442 and the cam 441, but the positioning member 41 is reset by the elastic force of the elastic member 444, and the end of the positioning member 41 is inserted into the positioning hole 51, and the positioning member 41 drives the cam 441 to rotate counterclockwise by the same angle through the traction member 443 and resets. The action of inserting the positioning member 41 into the positioning hole 51 is mainly completed by the elastic member 444, which can effectively avoid the situation where the positioning member 41 is in rigid contact with the clamping assembly 5 and is damaged when an error occurs in the initial position of the clamping assembly 5, thereby effectively protecting the clamping assembly 5 and the positioning member 41.

[0060] Furthermore, the traction member 443 is one of a filamentary structure, a rope-like structure, a belt-like structure and a linear structure.

[0061] In the present invention, by setting the traction member 443 to a bendable filamentary structure, a rope-like structure, a belt-like structure or a linear structure, when the cam 441 rotates in the counterclockwise direction, the traction member 443 can effectively pull the positioning member 41 out of the positioning hole 51. When the elastic member 444 drives the positioning member 41 to insert into the positioning hole 51, the traction force of the traction member 443 can drive the cam 441 to rotate in the clockwise direction to reset. Even if the positioning member 41 is not inserted into the positioning hole 51 and abuts against the outer wall of the clamping assembly 5, the traction member 443 can avoid it by bending to avoid squeezing and bending the traction member 443.

[0062] Preferably, the traction member 443 in the present invention is a steel wire rope, which can utilize the traction force of the steel wire rope to realize the linkage between the cam 441 and the positioning member 41, and can avoid the bending deformation of the steel wire rope, while also ensuring its service life.

[0063] The fixture positions the workpiece to be processed, such as lens b, through the clamping assembly 5. When the linear drive mechanism 4 drives the clamping assembly 5 to the second position, the clamping assembly 5 and the base 3 cooperate and clamp the workpiece to be processed. The second rotating part 2 can drive the base 3 and the workpiece to be processed to rotate around the second center line c. The first rotating part 1 can drive the second rotating part 2, the base 3, the clamping assembly 5 and the workpiece to be processed to rotate around the first center line a. The position and angle of the workpiece to be processed in space can be adjusted, so that the milling of the outer shape, drilling and milling of the side grooves of the workpiece to be processed can be completed by clamping once, thereby reducing the cumulative error caused by multiple clamping during the processing and improving the processing accuracy.

[0064] The present invention provides a processing device, comprising: a rotating mechanism; the above-mentioned fixture, which is arranged on the rotating mechanism; and a processing mechanism, which is used for processing a workpiece to be processed on the fixture.

[0065] The present invention provides a processing device for processing a lens b, wherein the lens b is positioned by a fixture, the lens b is adjusted at multiple angles by a rotating mechanism, and the lens b is processed accordingly in cooperation with a processing mechanism.

[0066] Among them, the processing mechanism includes milling processing unit, drilling processing unit and grinding processing unit, etc.; the milling unit is suitable for contour processing, the drilling unit focuses on hole processing, and the grinding unit is used for fine processing.

[0067] Specifically, the processing equipment provided by the present invention is a five-axis machine tool, which not only has high-precision control capabilities, but also has multi-axis linkage capabilities, and can process lens b from multiple directions and angles. By equipping the five-axis machine tool with the fixture provided by the present invention, it meets the multi-angle processing requirements of eyeglass lens b. In addition, the five-axis machine tool is suitable for milling, drilling, engraving and other processing techniques to meet all processing requirements of lens b; it also has flexible programming functions, can customize processing paths and conveniently adjust parameters to adapt to the diverse customization needs of lens b. More importantly, under the same stroke and precision requirements, the price of the five-axis machine tool is more favorable than that of the eyeglass machine. Among them, the rotating mechanism is a turntable of the five-axis machine tool, and a protective cover 6 is provided on the turntable. The power unit is arranged in the protective cover 6 to prevent external dust, debris, water vapor and other impurities from entering the cylinder and affecting the normal movement of components such as the cylinder piston. The first rotating part 1 of the rotating mechanism can rotate around the first center line a, the first center line a is the A axis, and the second rotating part 2 can rotate around the second center line c, the second center line c is the C axis. When processing lens b, first install lens b on the fixture. After completing the positioning and clamping of lens b, start the program and rotate the C axis to complete the rough processing and fine processing of the appearance of lens b. Then rotate the A axis to a certain angle to complete the hole feature processing. After rotating the A axis, rotate the C axis to complete the side groove processing. All features of lens b can be processed in one clamping, which greatly improves efficiency and avoids the cumulative error caused by multiple clamping. The feature size accuracy of lens b after processing is about 0.012mm, which meets the feature size requirements of lens b.

[0068] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A clamp, arranged on a rotating mechanism, the rotating mechanism comprising a first rotating part (1) and a second rotating part (2), the first rotating part (1) being rotatable around a first center line, the second rotating part (2) being arranged at a movable end of the first rotating part (1) and being rotatable around a second center line; characterized in that: The fixture comprises: A base (3) is arranged at the movable end of the second rotating part (2), and the base (3) is arranged coaxially with the second center line; A linear drive mechanism (4) is arranged at a movable end of the first rotating part (1), the linear drive mechanism (4) having a movable end movable along an extension direction of the second center line; and a clamping assembly (5) rotatably arranged at the moving end of the linear drive mechanism (4), the clamping assembly (5) being coaxially arranged with the base (3), and the clamping assembly (5) being used to position a workpiece to be processed; The linear drive mechanism (4) can drive the clamping assembly (5) to move between a first position and a second position; when the clamping assembly (5) is in the first position, the workpiece to be processed is separated from the base (3); when the clamping assembly (5) is in the second position, the clamping assembly (5) and the base (3) clamp the workpiece to be processed; and the first center line and the second center line are arranged to intersect.

2. The clamp according to claim 1, characterized in that: The linear drive mechanism (4) comprises a positioning member (41), and the positioning member (41) is used to position the clamping assembly (5) at the first position.

3. The clamp according to claim 2, characterized in that: When the clamping assembly (5) is in the second position, the positioning member (41) releases the positioning of the clamping assembly (5).

4. The clamp according to claim 2 or 3, characterized in that: The linear drive mechanism (4) comprises a power unit (42) and a support beam (43) arranged at the output end of the power unit (42), the support beam (43) being provided with the moving end, and the positioning member (41) being provided on the support beam (43).

5. The clamp according to claim 4, characterized in that: A positioning hole (51) is provided on the outer peripheral surface of the clamping assembly (5), and the positioning member (41) can move along the radial direction of the clamping assembly (5) so that the positioning member (41) can be inserted into or withdrawn from the positioning hole (51).

6. The clamp according to claim 5, characterized in that: The linear drive mechanism (4) further comprises a transmission assembly (44) connected to the positioning member (41), wherein the transmission assembly (44) is used to drive the positioning member (41) to be inserted into the positioning hole (51) when the clamping assembly (5) is located at the first position, and to drive the positioning member (41) to be withdrawn from the positioning hole (51) when the clamping assembly (5) is located at the second position.

7. The clamp according to claim 6, characterized in that The transmission assembly (44) comprises: a cam (441) rotatably disposed on the support beam (43), the cam (441) comprising a first state and a second state, wherein when the clamping assembly (5) is in the first position, the cam (441) is in the first state, and when the clamping assembly (5) is in the second position, the cam (441) is in the second state; a stopper (442) disposed at the movable end of the first rotating part (1), the stopper (442) abutting against the outer peripheral surface of the cam (441) and used for driving the cam (441) to switch between the first state and the second state; and a traction member (443), one end of the traction member (443) being rotatably connected to the eccentric position of the cam (441), and the other end of the traction member (443) being connected to the positioning member (41); Wherein, when the cam (441) is in the first state, the cam (441) drives the positioning member (41) to be inserted into the positioning hole (51) via the traction member (443); when the cam (441) is in the second state, the cam (441) drives the positioning member (41) to be withdrawn from the positioning hole (51) via the traction member (443).

8. The clamp according to claim 7, characterized in that: The transmission assembly (44) further comprises an elastic member (444), wherein the elastic member (444) connects the support beam (43) and the positioning member (41), and the elastic force applied by the elastic member (444) to the positioning member (41) is used to drive the end of the positioning member (41) to be inserted into the positioning hole (51).

9. The clamp according to claim 7 or 8, characterized in that: The traction member (443) is one of a filament-like structure, a rope-like structure, a belt-like structure and a linear structure.

10. A processing equipment, characterized in that: include: Rotating mechanism; The clamp according to any one of claims 1 to 9, arranged on the rotating mechanism; And a processing mechanism, wherein the processing mechanism is used to process the workpiece to be processed on the fixture.

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