Clamp and machining apparatus

Abstract

The application relates to the technical field of machining, in particular to a clamp and a machining device. 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 on 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 on the movable end of the second rotating part, and the base is coaxially arranged with the second center line. The linear driving mechanism is arranged on the movable end of the first rotating part, and the linear driving mechanism has a movable end which can move along the extension direction of the second center line. The clamping assembly is rotatably arranged on the movable end, and the clamping assembly is used for positioning a workpiece to be machined. The clamp provided by the application can complete the processes of milling the outer shape of a lens, drilling and milling a side edge groove at one time, reduces the accumulated error caused by multiple clamping in the machining process, and improves the machining precision.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of machining, in particular to a clamp and machining equipment. BACKGROUND

[0002] Eyeglass lenses are necessary tools for improving the life, study and work of people with vision problems. Eyeglass lenses need to go through the steps of milling outer shape, drilling, milling side slot and the like from blank to finished product.

[0003] At present, some enterprises use desktop three-axis machines to stick lenses with glue for contour milling, and then use ordinary eyeglass processing special machines equipped with professional clamps for drilling, milling side slot and the like. This way not only has low processing efficiency, but also as the number of processes increases, errors may accumulate, resulting in difficulty in ensuring the precision of lenses. SUMMARY

[0004] The present application provides a clamp and machining equipment, which can complete the steps of milling outer shape, drilling and milling side slot of lenses at one time, reduce the accumulated errors caused by multiple clamping in the processing process, and improve the processing precision.

[0005] In a first aspect, the embodiments of the present application provide a clamp arranged on a rotating mechanism, the rotating mechanism comprising a first rotating part and a second rotating part, the first rotating part being rotatable about a first center line, and the second rotating part being arranged at a movable end of the first rotating part and being rotatable about a second center line; the clamp comprising: a base arranged at the movable end of the second rotating part, the base being coaxially arranged with the second center line; a linear driving mechanism arranged at the movable end of the first rotating part, the linear driving mechanism having a movable end movable along the extension direction of the second center line; and a clamping assembly rotatably arranged at the movable end of the linear driving mechanism, the clamping assembly being coaxially arranged with the base, and the clamping assembly being used for positioning a workpiece to be processed; wherein the linear driving mechanism is used for driving the clamping assembly to move between a first position and a second position, when the clamping assembly is at the first position, the workpiece to be processed is separated from the base, and when the clamping assembly is at the second position, the clamping assembly and the base clamp the workpiece to be processed; and the first center line and the second center line are arranged to intersect.

[0006] In a possible implementation manner, the linear driving mechanism comprises a positioning member, and the positioning member is used for positioning the clamping assembly at the first position.

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

[0008] In a possible implementation manner, the linear driving mechanism comprises a power unit and a support beam arranged at the output end of the power unit, the support beam is provided with the movable end, and the positioning member is arranged on the support beam.

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

[0010] In a possible implementation, the linear driving mechanism further comprises a transmission assembly connected with the positioning member, which is used to drive the positioning member to be inserted into the positioning hole when the clamping assembly is located at the first position, and drive the positioning member to be withdrawn from the positioning hole when the clamping assembly is located at the second position.

[0011] In a possible implementation, the transmission assembly comprises: a cam rotatably arranged on the support beam, the outer circumferential surface of the cam abuts against the stopper, the cam comprises a first state and a second state, when the clamping assembly is located at the first position, the cam is in the first state, and when the clamping assembly is located at the second position, the cam is in the second state; the stopper is arranged at the movable end of the first rotating part, and abuts against the outer circumferential surface of the cam to drive the cam to switch between the first state and the second state; and the traction member is rotatably connected at one end with the eccentric position of the cam, and connected at the other end with 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; and when the cam is in the second state, the cam drives the positioning member to be withdrawn from the positioning hole through the traction member.

[0012] In a possible implementation, the transmission assembly further comprises an elastic member, which is connected with 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, the traction member is in one of a wire structure, a rope structure, a belt structure and a line structure.

[0014] In a second aspect, the present application provides a machining device, comprising: a rotating mechanism; the clamp as described above arranged on the rotating mechanism; and a machining mechanism, which is used to machine the workpiece on the clamp.

[0015] The clamp and the machining device provided by the present application can position the workpiece such as a lens through the clamping assembly, clamp the workpiece through the cooperation of the clamping assembly and the base when the linear driving mechanism drives the clamping assembly to the second position, rotate the base and the workpiece around the second center line through the second rotating part, rotate the second rotating part, the base, the clamping assembly and the workpiece around the first center line through the first rotating part, adjust the position and angle of the workpiece in space, and thus complete the processes of milling the outer shape, drilling and milling the side slot of the workpiece in one clamping, reduce the cumulative error caused by multiple clamping in the machining process, and improve the machining precision. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

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

[0018] Figure 2 is a structural schematic view of a clamp when a clamping assembly is in a first position provided by the present application.

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

[0020] Figure 4 is a partial enlarged structural schematic view of A of Figure 3 ;

[0021] Figure 5 is a structural schematic view of a rotating mechanism and a base provided by the present application.

[0022] Reference signs:

[0023] a, first center line; b, lens; c, second center line;

[0024] 1, first rotating part; 2, second rotating part;

[0025] 3, base;

[0026] 4, linear driving mechanism; 41, positioning piece; 42, power unit; 43, support beam; 44, transmission assembly; 441, cam; 4411, protruding part; 442, stop block; 443, traction piece; 444, elastic piece;

[0027] 5, clamping assembly; 51, positioning hole; 52, clamping joint; 53, bearing; 54, adsorption assembly;

[0028] 6, protective cover. DETAILED DESCRIPTION

[0029] In order to make the objects, technical solutions and advantages of the present application clearer, the following will combine the drawings in the present application to clearly and completely describe the technical solutions in the present application. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the present application.

[0030] The application is described below Figures 1-5 A clamp provided by the embodiment of the application is arranged on a rotating mechanism, the rotating mechanism comprises a first rotating part 1 and a second rotating part 2, the first rotating part 1 is rotatable about a first center line a, and the second rotating part 2 is arranged at a movable end of the first rotating part 1 and is rotatable about a second center line c; the clamp comprises a base 3, a linear driving mechanism 4 and a clamping assembly 5; wherein:

[0031] 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 is rotatable with the movable end of the second rotating part 2 about the second center line c, and the base 3 is used for cooperating with the clamping assembly 5 in the second position to realize effective fixing of a workpiece to be machined.

[0032] The linear driving mechanism 4 is arranged at the movable end of the first rotating part 1, and the linear driving mechanism 4 has a movable end movable along the extension direction of the second center line c.

[0033] The clamping assembly 5 is rotatably arranged at the movable end of the linear driving mechanism 4, the clamping assembly 5 is coaxially arranged with the base 3, and the clamping assembly 5 is used for positioning the workpiece to be machined.

[0034] The linear driving mechanism 4 can drive the clamping assembly 5 to move between the first position and the second position, when the clamping assembly 5 is in the first position, the workpiece to be machined 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 machined; the first center line a and the second center line c are intersectingly arranged.

[0035] In the application, the workpiece to be machined such as a lens b is positioned by the clamping assembly 5, when the linear driving 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 machined, the base 3 and the workpiece to be machined can be driven to rotate about the second center line c by the second rotating part 2, the second rotating part 2, the base 3, the clamping assembly 5 and the workpiece to be machined can be driven to rotate about the first center line a by the first rotating part 1, the position and angle of the workpiece to be machined in space can be adjusted, and then the milling outer shape, drilling and milling side slot processes of the workpiece to be machined can be completed by one-time clamping, the cumulative error caused by multiple clamping in the machining process is reduced, and the machining precision is improved.

[0036] Specifically, the workpiece to be processed in the application is a lens b, the clamping assembly 5 is used to adsorb and position the lens b, and then the lens b is clamped by cooperating with the base 3 when the clamping assembly 5 moves to the second position. Then 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 intersected, so that the lens b can be positioned at any angle in space, and the demand for multi-surface processing of the lens b is met.

[0037] In the related art, at present, some enterprises use desktop three-axis machines to mill the profile by using glue, and then use ordinary glasses processing special machines equipped with professional clamps to drill holes and mill side grooves. This method not only has low processing efficiency, but also as the number of processes increases, errors may accumulate, resulting in difficulty in ensuring the precision of the lens b. Some high-end enterprises use high-end processing special machines, which can complete the milling of the lens b, drilling, milling of the side groove and other processes on one machine, and can realize batch production. However, the high-end processing special machine is expensive, and the initial investment is large. For some small optical stores or processing enterprises, the financial pressure of purchasing equipment is large. In addition, as the demand for glasses styles increases, when facing small batch, multi-specification personalized orders, its flexibility is relatively poor, and it is difficult to quickly adjust to meet the personalized needs of customers. For example, some lenses b have special patterns on the edges, which need to be further processed by engraving equipment.

[0038] The embodiment provided by the application completes the clamping and positioning of the lens b by cooperating the clamping assembly 5 with the base 3, and then the lens b can be rotated around the first center line a by rotating the first rotating part 1, and the lens b can be rotated around the second center line c by rotating the second rotating part 2, thereby realizing the positioning of the lens b at various processing angles. Compared with the high-end processing special machine, the cost can be effectively reduced, the initial investment can be reduced, and when facing small batch, multi-specification personalized processing orders, the flexibility can be adjusted, thereby the personalized needs of customers can be quickly met.

[0039] Specifically, the first center line a and the second center line c are perpendicular to each other, if the first center line a is horizontal, the second center line c is vertical, the base 3 supports the lens b, facilitates clamping and fixing of the lens b, and then the processing angle of the lens b is adjusted by rotating the first rotating part 1 and the second rotating part 2. The straight line driving mechanism 4 controls the movement of the clamping assembly 5 between the first position and the second position, realizes the quick loading and unloading and accurate clamping of the lens b. The base 3 and the clamping assembly 5 are coaxially arranged to ensure the concentricity and stability of clamping. When the second rotating part 2 drives the base 3 to rotate around the second center line c, the coaxial arrangement of the base 3 and the clamping assembly 5 ensures the accuracy of the rotation of the lens b around the second center line c, and reduces the eccentric error.

[0040] In some embodiments, the linear driving mechanism 4 comprises a positioning member 41 for positioning the clamping assembly 5 in the first position.

[0041] In the present application, the positioning member 41 is used to achieve accurate positioning of the clamping assembly 5 in the first position (separation position), preventing unnecessary rotation of the clamping assembly 5 in the unloaded state, and improving workpiece loading and unloading efficiency and positioning accuracy.

[0042] Specifically, the positioning member 41 can be a latch, a positioning pin or other mechanical positioning structure, which cooperates with the clamping assembly 5 to form reliable positioning.

[0043] Moreover, when the clamping assembly 5 moves to the second position, the clamping assembly 5 cooperates with the base 3 to complete clamping and fixing of the lens b, and at this time the positioning member 41 is used to position the clamping assembly 5, thereby achieving positioning of the initial position of the lens b, so as to find the adjustment reference when adjusting the position of the lens b in the later stage, thereby ensuring the positioning accuracy and processing accuracy of the lens b. Before performing different processing procedures of the lens b, the positioning member 41 can also be used to position the clamping assembly 5, thereby positioning the initial position of the lens b, so as to ensure the accuracy of the subsequent processing procedures. 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.

[0044] 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.

[0045] In the present application, the positioning release is automatically triggered by the change of the position of the clamping assembly 5, avoiding manual operation; the positioning is automatically released when the lens b is clamped, avoiding interference, achieving automation of the clamping process, and preventing the positioning member 41 from hindering the clamping process.

[0046] Specifically, when the clamping assembly 5 moves to the first position, i.e. 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, i.e. the lens b is attached to the base 3, the clamping assembly 5 cooperates with the base 3 to complete clamping and fixing of the lens b, and at this time the positioning member 41 automatically releases the positioning of the clamping assembly 5, so that the clamping assembly 5 can freely rotate with the lens b.

[0047] In some embodiments, the linear driving mechanism 4 comprises a power unit 42 and a support beam 43 provided at the output end of the power unit 42, and the moving end is provided on the support beam 43, and the positioning member 41 is provided on the support beam 43.

[0048] In the application, 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, so as to 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, and realize the movement of the clamping assembly 5 between the first position and the second position. The positioning piece 41 is arranged on the support beam 43, and the positioning piece 41 moves synchronously with the clamping assembly 5 along the extension direction of the second center line c, so as to ensure that the positioning piece 41 can smoothly position the clamping assembly 5.

[0049] Specifically, the power unit 42 adopts a pneumatic cylinder, which has a relatively simple structure and fewer moving parts. Under the condition of reasonable lubrication and air supply, the pneumatic cylinder can withstand high-frequency reciprocating motion. Moreover, the pneumatic cylinder occupies relatively small space, is convenient to install and arrange, and is easier to be connected with other mechanical parts, so the application utilizes the pneumatic cylinder to drive the support beam 43 to move. The support beam 43 is arranged, and the clamping assembly 5 is arranged on the moving end of the support beam 43, which is away from the power unit 42, so as to provide sufficient machining space around the clamping assembly 5 and avoid the interference of the structure on machining.

[0050] Optionally, the power unit 42 can also adopt other forms of linear drive, such as a hydraulic cylinder, an electric push rod, etc.

[0051] In a specific embodiment, the clamping assembly 5 comprises a clamping joint 52, and the clamping joint 52 is rotatably connected with the support beam 43 through a bearing 53. The bearing 53 adopts an angular contact ball bearing 53, which can ensure the accuracy under high-rotation working conditions. The clamping joint 52 is provided with an adsorption assembly 54, and the adsorption assembly 54 is used for adsorbing the lens b. The adsorption assembly 54 can be detachable with the clamping joint 52, so as to realize the quick disassembly and assembly of the lens b. The adsorption assembly 54 comprises a suction cup, double-sided tape and a non-slip film. The non-slip film is connected with the suction cup through the double-sided tape, the non-slip film is connected with the lens b, and the suction cup is detachably connected with the clamping joint 52, so as to realize the quick assembly of the lens b.

[0052] In some embodiments, the clamping assembly 5 is provided with a positioning hole 51 on the outer circumferential surface, and the positioning piece 41 can move along the radial direction of the clamping assembly 5 to insert into or exit from the positioning hole 51.

[0053] In the application, the positioning piece 41 adopts a positioning pin. The positioning pin is moved along the radial direction of the clamping assembly 5, so that the end of the positioning pin is inserted into the positioning hole 51, and the positioning of the clamping assembly 5 is completed. The end of the positioning pin exits from the positioning hole 51, and the positioning of the clamping assembly 5 is released. The use of the positioning pin to fix the workpiece to be machined not only accurately limits the translation and rotation of the workpiece in the plane, but also ensures that the position error of the workpiece placed each time is extremely small, and has the advantage of high repeated positioning accuracy. In addition, the positioning pin is easy to install and operate, and the positioning operation can be completed only by inserting the pin into the corresponding pin hole. The subsequent maintenance and replacement operations are also relatively easy.

[0054] Specifically, the positioning pin comprises a positioning segment and an insertion head arranged at the end of the positioning segment, the diameter of the positioning segment is in clearance fit with the inner diameter of the positioning hole 51, and the insertion head is provided with a spherical surface or a circular truncated cone structure, so as to facilitate the insertion of the end of the positioning pin into the positioning hole 51, and then the positioning of the clamping assembly 5 is realized through the cooperation of the positioning segment of the positioning pin and the positioning hole 51.

[0055] In some embodiments, the linear driving mechanism 4 further comprises a transmission assembly 44 connected with 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 located at the first position, and drive the positioning member 41 to exit from the positioning hole 51 when the clamping assembly 5 is located at the second position.

[0056] In the present application, the transmission assembly 44 associates the linear motion with the positioning action, realizes the linkage control of the clamping process, realizes the automation of the positioning action, has good action synchronizability, avoids interference, has compact structure and reliable movement.

[0057] Specifically, when the clamping assembly 5 is located at the first position, the positioning member 41 inserts into the positioning hole 51 to position the clamping assembly 5, when the clamping assembly 5 switches from the first position to the second position, the positioning member 41 is driven by the transmission assembly 44 to exit from the positioning hole 51, and when the clamping assembly 5 reaches the second position, the positioning member 41 completely exits from the positioning hole 51; when the clamping assembly 5 switches from the second position to the first position, the positioning member 41 is driven by the transmission assembly 44 to insert into the positioning hole 51. Through one power unit 42, the switching of the clamping assembly 5 between the first position and the second position can be completed, and the positioning and de-positioning of the positioning member 41 to the clamping assembly 5 are also completed, so that two power units 42 are not needed, the structure is more compact, the occupied space at the support beam 43 is reduced, and interference during the machining of the lens b is avoided. Moreover, the action synchronizability is good, the position of the clamping assembly 5 does not need to be detected by a sensor, and the movement of the positioning member 41 is controlled according to the position of the clamping assembly 5, so that the reliability of the action is ensured.

[0058] In some embodiments, the transmission assembly 44 comprises a cam 441, a stop block 442 and a traction member 443.

[0059] The cam 441 is rotatably arranged on the support beam 43, the outer circumferential surface of the cam 441 abuts against the stop block 442, and the cam 441 comprises a first state and a second state. When the clamping assembly 5 is at the first position, the cam 441 is at the first state, and when the clamping assembly 5 is at the second position, the cam 441 is at the second state.

[0060] The stop block 442 is arranged at the movable end of the first rotating part 1, and abuts against the outer circumferential surface of the cam 441, and is used to drive the cam 441 to switch between the first state and the second state.

[0061] 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.

[0062] When the cam 441 is in the first state, the cam 441 drives the positioning member 41 to insert into the positioning hole 51 through the traction member 443; when the cam 441 is in the second state, the cam 441 drives the positioning member 41 to exit from the positioning hole 51 through the traction member 443.

[0063] In the present application, the cam 441 is arranged on the support beam 43, and the stop block 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, the displacement occurs between the cam 441 and the stop block 442. By abutting the stop block 442 against the outer circumferential surface of the cam 441, the cam 441 is driven to rotate by extrusion with the stop block 442 when the cam 441 moves up and down. The cam 441 drives the positioning member 41 to move through the traction member 443 when rotating, thereby realizing the linkage between the driving of the positioning member 41 and the movement of the support beam 43.

[0064] Specifically, the linkage can be generated between the cam 441 and the stop block 442 through friction, and the stop block 442 drives the cam 441 to rotate through friction. The stop block 442 can also generate a relative force by abutting against the outer circumferential surface of the cam 441, and drive the cam 441 to rotate through the force.

[0065] Alternatively, the stop block 442 can also be arranged as a connecting rod, one end of the connecting rod is connected to the movable end of the first rotating part 1, and the other end is rotatably connected to the eccentric position of the cam 441. When the support beam 43 moves up and down, the relative displacement occurs between the cam 441 and the stop block 442. The cam 441 is driven to rotate through the action of the connecting rod, thereby controlling the displacement of the positioning member 41 along the radial direction of the clamping assembly 5.

[0066] In some embodiments, the transmission assembly 44 further comprises an elastic member 444 connected between the support beam 43 and the positioning member 41. The elastic force applied to the positioning member 41 by the elastic member 444 is used to drive the end of the positioning member 41 to insert into the positioning hole 51.

[0067] In the present application, the elastic member 444 is arranged between the support beam 43 and the positioning member 41. The elastic member 444 can be a spring or other elastic structure. The elastic member 444 provides a pre-tightening force, ensures reliable positioning, compensates for system clearance, and improves positioning accuracy.

[0068] Specifically, the cam 441 is provided with a protruding portion 4411, the protruding portion 4411 is extruded with the block 442, and the cam 441 is driven to rotate. When the support beam 43 moves from the first position to the second position, that is, the support beam 43 moves downward, the block 442 is extruded with the protruding portion 4411 of the cam 441, and the cam 441 is pushed to rotate counterclockwise by a certain angle, and the cam 441 pulls the positioning piece 41 through the traction piece 443, so that the end of the positioning piece 41 is withdrawn from the positioning hole 51. When the support beam 43 moves from the second position to the first position, that is, the support beam 43 moves upward, the block 442 and the cam 441 are relatively extruded, and the positioning piece 41 is reset by the elastic force of the elastic piece 444, and the end of the positioning piece 41 is inserted into the positioning hole 51, and the positioning piece 41 drives the cam 441 to rotate counterclockwise by the same angle through the traction piece 443. The action of inserting the positioning piece 41 into the positioning hole 51 is mainly completed by the elastic piece 444, which can effectively avoid the damage of the positioning piece 41 and the clamping assembly 5 due to the rigid contact of the positioning piece 41 and the clamping assembly 5 when the initial position of the clamping assembly 5 has an error, and effectively protects the clamping assembly 5 and the positioning piece 41.

[0069] Further, the traction piece 443 is one of a wire structure, a rope structure, a belt structure and a line structure.

[0070] In the present application, the traction piece 443 is arranged as a flexible wire structure, a rope structure, a belt structure or a line structure, so that when the cam 441 rotates counterclockwise, the positioning piece 41 can be effectively pulled out of the positioning hole 51 by the traction piece 443. When the elastic piece 444 drives the positioning piece 41 to insert into the positioning hole 51, the cam 441 can be driven to rotate clockwise by the traction force of the traction piece 443. Even if the positioning piece 41 does not insert into the positioning hole 51 and abuts against the outer wall of the clamping assembly 5, the traction piece 443 can avoid extrusion and bending by bending.

[0071] Preferably, the traction piece 443 in the present application is selected from a steel wire rope, which can realize the linkage between the cam 441 and the positioning piece 41 by using the traction force of the steel wire rope, avoid extrusion by bending deformation of the steel wire rope, and also ensure the service life.

[0072] The fixture positions the workpiece to be machined, such as the lens b, through the clamping assembly 5, when the linear driving 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 machined, the base 3 and the workpiece to be machined can be driven to rotate around the second center line c through the second rotating part 2, the first rotating part 1 can drive the second rotating part 2 and the base 3, the clamping assembly 5 and the workpiece to be machined to rotate around the first center line a, the position and angle of the workpiece to be machined in space can be adjusted, and then the milling profile, drilling and milling side groove processes of the workpiece to be machined can be completed at one time, the cumulative error caused by multiple clamping in the machining process is reduced, and the machining precision is improved.

[0073] The application provides a machining device, which comprises a rotating mechanism, the fixture described above arranged on the rotating mechanism, and a machining mechanism for machining the workpiece to be machined on the fixture.

[0074] The application provides a machining device for machining the lens b, which positions the lens b through the fixture, adjusts the lens b at multiple angles through the rotating mechanism, and processes the lens b through the machining mechanism.

[0075] The machining mechanism comprises a milling machining unit, a drilling machining unit and a grinding machining unit, etc.; the milling unit is suitable for contour machining, the drilling unit is dedicated to hole machining, and the grinding unit is used for finishing.

[0076] Specifically, the processing equipment provided by the application is a five-axis machine tool, which not only has high-precision control capability, but also has multi-axis linkage capability, can process the lens b from multiple directions and multiple angles, and through the fixture provided by the application matched with the five-axis machine tool, the multi-angle processing requirement of the spectacle lens b is met. In addition, the five-axis machine tool is suitable for milling, drilling, engraving and other processing technologies, and meets all processing requirements of the lens b; it also has flexible programming function, can customize processing path and conveniently adjust parameters, and adapts to diversified customization requirements of the lens b. More importantly, under the same stroke and precision requirement, the price of the five-axis machine tool is more favorable than that of the spectacle machine. The rotating mechanism is a rotary table of the five-axis machine tool, the rotary table is provided with a protective cover 6, a power unit is arranged in the protective cover 6, and the power unit is used for preventing dust, debris, water vapor and other impurities in the outside from entering the inside of the air cylinder, thereby affecting the normal movement of the piston and other components of the air cylinder. The first rotating part 1 of the rotating mechanism can rotate around the first center line a, and the first center line a is an A-axis. The second rotating part 2 can rotate around the second center line c, and the second center line c is a C-axis. When the lens b is processed, first, the lens b is installed on the fixture, after the positioning and clamping of the lens b are completed, the program is started, the C-axis is rotated, and the rough machining and the finish machining of the outer shape of the lens b are completed. Then, the A-axis is rotated by a certain angle to complete the hole feature machining. The A-axis is rotated and the C-axis is rotated to complete the side groove machining. Once clamping is completed, all features of the lens b are machined, the efficiency is greatly improved, the cumulative error caused by multiple clamping is avoided, the feature size precision of the machined lens b is about 0.012mm, and the feature size requirement of the lens b is met.

[0077] The device embodiments described above are only schematic, wherein the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the embodiment scheme. Those skilled in the art can understand and implement without creative labor.

[0078] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A clamp provided 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 provided on a movable end of the first rotating part (1) and being rotatable around a second center line; characterized in that, The clamp comprises: a base (3) arranged at the movable end of the second rotating part (2), the base (3) being coaxially arranged with the second center line; a linear driving mechanism (4) arranged at the movable end of the first rotating part (1), the linear driving mechanism (4) having a moving end movable along the extension direction of the second center line; and a clamping assembly (5) rotatably arranged at the moving end of the linear driving mechanism (4), the clamping assembly (5) being coaxially arranged with the base (3), and the clamping assembly (5) being used for positioning a workpiece to be machined; wherein the linear driving mechanism (4) can drive the clamping assembly (5) to move between a first position and a second position, when the clamping assembly (5) is at the first position, the workpiece to be machined is separated from the base (3); when the clamping assembly (5) is at the second position, the clamping assembly (5) and the base (3) clamp the workpiece to be machined; the first center line and the second center line are arranged to intersect; the linear driving mechanism (4) comprises a positioning member (41), the positioning member (41) being used for positioning the clamping assembly (5) at the first position; a positioning hole (51) is arranged on the outer circumferential surface of the clamping assembly (5), the positioning member (41) is movable along the radial direction of the clamping assembly (5) to make the positioning member (41) inserted into or withdrawn from the positioning hole (51); the linear driving mechanism (4) further comprises a transmission assembly (44) connected with the positioning member (41), the transmission assembly (44) is used for driving the positioning member (41) to be inserted into the positioning hole (51) when the clamping assembly (5) is at the first position, and driving the positioning member (41) to be withdrawn from the positioning hole (51) when the clamping assembly (5) is at the second position.

2. The clamp of claim 1, wherein When the clamping assembly (5) is at the second position, the positioning member (41) releases the positioning of the clamping assembly (5).

3. The clamp of claim 1 or 2, wherein The linear driving 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) is provided with the moving end, and the positioning member (41) is arranged on the support beam (43).

4. The clamp of claim 3, wherein The transmission assembly (44) comprises: a cam (441) rotatably arranged on the support beam (43), the cam (441) comprising a first state and a second state, when the clamping assembly (5) is at the first position, the cam (441) is at the first state, and when the clamping assembly (5) is at the second position, the cam (441) is at the second state; a stop block (442) arranged at the movable end of the first rotating part (1), the stop block (442) abutting against the outer circumferential surface of the cam (441), and being 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 with an eccentric position of the cam (441), and the other end being connected with the positioning member (41); When the cam (441) is in the first state, the cam (441) drives the positioning member (41) to insert into the positioning hole (51) through the traction member (443); when the cam (441) is in the second state, the cam (441) drives the positioning member (41) to exit from the positioning hole (51) through the traction member (443).

5. The clamp of claim 4, wherein The transmission assembly (44) further comprises an elastic member (444) connected with the supporting beam (43) and the positioning member (41), and the elastic force of the elastic member (444) applied to the positioning member (41) is used to drive the end of the positioning member (41) to insert into the positioning hole (51).

6. The clamp of claim 4 or 5, wherein, The traction member (443) is one of a wire structure, a rope structure, a belt structure and a line structure.

7. A processing apparatus characterized by comprising: comprising: a rotating mechanism; the clamp according to any one of claims 1-6, disposed on the rotating mechanism; and a processing mechanism, used for processing a workpiece to be processed on the clamp.

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