A vertical automatic tool changer system for ultra-precision cutting machining

Abstract

The application relates to the technical field of precision machining systems, and particularly relates to a vertical automatic tool changing system for super-precision cutting machining. The vertical automatic tool changing system for super-precision cutting machining comprises a base, a first driving element, a rotary table, a second driving element and a tool disc. The base is provided with a first matching part. The first driving element is connected to the base. The rotary table is connected to the first driving element, and the first driving element can drive the rotary table to perform linear motion. The second driving element is connected to the base. The second driving element is in transmission cooperation with the rotary table, so that a first component in the rotary table can rotate relative to a second component. The tool disc is connected to the first component. The tool disc is provided with a tool and a second matching part. When the rotary table is driven by the first driving element and the second driving element, the second matching part can be matched with the first matching part to limit the rotary table from rotating relative to the first driving element. The application has the advantages of simple structure, high tool changing efficiency and guaranteed machining precision.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of precision machining systems, and particularly relates to a vertical automatic tool changing system for ultra-precision cutting machining. BACKGROUND

[0002] In view of the fact that an automatic tool changing system for ultra-precision cutting machining is currently unavailable, in order to improve the machining efficiency of the ultra-precision cutting machining process, shorten the tool changing time and ensure machining precision, a vertical automatic tool changing system for ultra-precision cutting machining is developed, which can realize accurate positioning and rapid tool changing of a tool. SUMMARY

[0003] The application provides a vertical automatic tool changing system for ultra-precision cutting machining in relation to the problems in the background art.

[0004] The application is achieved through the following technical solutions:

[0005] A vertical automatic tool changing system for ultra-precision cutting machining comprises:

[0006] A base is provided with a first matching part;

[0007] A first driving member is connected to the base;

[0008] A rotary table is connected to the first driving member, and the first driving member can drive the rotary table to perform linear motion;

[0009] A second driving member is connected to the base, and the second driving member is in transmission cooperation with the rotary table to enable a first component in the rotary table to rotate relative to a second component;

[0010] A tool disc is connected to the first component, and the tool disc is provided with a tool and a second matching part; when the rotary table is driven by the first driving member and the second driving member, the second matching part can form cooperation with the first matching part to limit the rotary table from rotating relative to the first driving member.

[0011] The vertical automatic tool changing system for ultra-precision cutting machining provided in the application is connected to a machining device, the first driving member drives the rotary table to move, the first matching part on the base and the second matching part on the tool disc are separated, so that the first part in the rotary table can rotate relative to the second part under the driving of the second driving member, the rotary table drives the tool disc to rotate, and the cutters at different positions on the tool disc can correspond to the positions of the workpiece to be machined, so that the positioning of the cutters is realized; after the positions of the cutters are determined, the first driving member drives the rotary table to move so that the first matching part and the second matching part are matched, at this time, the first part is limited in the circumferential direction, that is, the first part cannot rotate freely relative to the second part, so that the cutters can perform normal machining work. In the application, the first part of the rotary table is driven to rotate by the second driving member, and then the first driving member drives the rotary table to make the first matching part and the second matching part matched, the torque borne by the rotary table during machining is borne by the first matching part and the second matching part, the second driving member only provides the function of rotating adjustment and basically does not share the torque borne by the rotary table, so that the service life of the second driving member can be guaranteed, the transmission structure between the second driving member and the rotary table is basically not stressed, the structural integrity of the transmission structure can be ensured, the position adjustment accuracy of the cutters can be ensured, and thus the machining accuracy of the machining device can be ensured. Meanwhile, the vertical automatic tool changing system for ultra-precision cutting machining provided in the application has a relatively simple structure and easy control, can have high tool changing efficiency, and thus the overall machining efficiency of the machining device can be improved.

[0012] In some optional embodiments, the first matching part and the second matching part are configured as toothed discs capable of engaging with each other.

[0013] In some optional embodiments, the first driving member is configured as a pneumatic cylinder.

[0014] In some optional embodiments, the rotary table comprises:

[0015] A rotary table base connected with the first driving member;

[0016] A rotary cylinder sleeved on the rotary table base and capable of freely rotating relative to the rotary table base, and the tool disc is connected with the rotary cylinder;

[0017] A driven member arranged on the rotary cylinder and in transmission cooperation with the second driving member to drive the rotary cylinder to rotate on the rotary table base under the driving of the second driving member.

[0018] In some optional embodiments, the driven member is configured as a gear ring, the driven member is sleeved on the rotary cylinder to form a tight fit, and the second driving member drives the gear ring to rotate through a driving gear.

[0019] In some optional embodiments, a bearing is arranged between the rotating drum and the rotary table base.

[0020] In some optional embodiments, a sensor is arranged on the base and used to detect the position of the rotary table in the linear direction.

[0021] In some optional embodiments, the sensor is configured as a photoelectric sensor.

[0022] In some optional embodiments, a pre-tightening spring is arranged between the first driving member and the rotary table.

[0023] In some optional embodiments, the pre-tightening spring is configured to provide a pre-tightening force of no less than 100 N when the first mating part and the second mating part are matched.

[0024] Compared with the prior art, the present application has the following advantages and beneficial effects:

[0025] The vertical automatic tool changing system for ultra-precision cutting machining provided by the present application has the following advantages: after the base is connected to the machining equipment, the rotary table is driven to move by the first driving member, the first mating part on the base and the second mating part on the tool disc are separated, so that the first part in the rotary table can rotate relative to the second part under the driving of the second driving member, the rotary table drives the tool disc to rotate, and the cutters at different positions on the tool disc can correspond to the positions of the workpiece to be machined, so that the positioning of the cutters is realized; after the positions of the cutters are determined, the rotary table is driven to move by the first driving member to match the first mating part and the second mating part, at this time, the first part is limited in the circumferential direction, i.e., the first part cannot rotate freely relative to the second part, so that the cutters can perform normal machining work. In the present application, the first part of the rotary table is driven to rotate by the second driving member, and then the rotary table is driven by the first driving member to match the first mating part and the second mating part, so that the torque borne by the rotary table during machining is borne by the first mating part and the second mating part, the second driving member only provides the function of adjusting the rotation and basically does not share the torque borne by the rotary table, which can ensure the service life of the second driving member, and the transmission structure between the second driving member and the rotary table is basically not stressed, which can ensure the structural integrity of the transmission structure and the positioning accuracy of the cutters, thereby ensuring the machining accuracy of the machining equipment. At the same time, the vertical automatic tool changing system for ultra-precision cutting machining provided by the present application has a relatively simple structure and easy control, which can make it have a high tool changing efficiency, thereby improving the overall machining efficiency of the machining equipment. BRIEF DESCRIPTION OF DRAWINGS

[0026] To more clearly illustrate the technical solutions of the exemplary embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. In the drawings:

[0027] Fig. 1 A schematic diagram of the structure of a vertical automatic tool changer for ultra-precision cutting provided in this application embodiment;

[0028] Fig. 2 This is a schematic diagram of the internal structure of a vertical automatic tool changer for ultra-precision machining provided in an embodiment of this application.

[0029] Fig. 3 This is a cross-sectional structural diagram of a vertical automatic tool changer for ultra-precision cutting provided in an embodiment of this application.

[0030] The attached diagram shows the markings and corresponding component names:

[0031] 1-Outer shell, 2-Retaining ring, 3-Blade bar holder, 4-Blade bar pressure block, 5-Tool holder, 6-Electrical interface, 7-Pneumatic interface, 8-Base, 9-Second drive component, 10-Support frame, 11-Drive gear, 12-Cover plate, 13-First mating part, 14-Second mating part, 15-Tool disc, 16-Gear ring, 17-Rotating drum, 18-Sensor, 19-Turntable base, 20-Guide rod, 21-First drive component, 22-Preload spring. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this application are only for explaining this application and are not intended to limit this application.

[0033] like Figs. 1-3 As shown in the figure, this application provides a vertical automatic tool changer system for ultra-precision cutting. The vertical automatic tool changer system for ultra-precision cutting includes a base 8, a first drive member 21, a turntable, a second drive member 9, and a tool head 15.

[0034] The base 8 can be configured as a plate, for example, the base 8 can be configured as a steel plate or other plate with structural strength comparable to or better than a steel plate to ensure that the base 8 has good connection strength after being connected with the processing equipment; the base 8 as a whole can be a square plate, a plurality of connection holes can be provided near the edges of the base 8, the connection holes can be connected with the processing equipment by bolts to ensure the connection stability of the base 8 with the processing equipment, and the use of multiple bolts for connection can also ensure the positioning accuracy of the base 8 on the processing equipment, for example, one connection hole is provided at each of the four corner points of the base 8, and one connection hole is provided at the middle of each two corner points; the base 8 is provided with a first matching part 13, wherein the base 8 is further provided with a support frame 10, the height of the support frame 10 in the normal direction of the plate surface of the base 8 is higher than that of the first driving part 21 and the second driving part 9, and the first driving part 21 and the second driving part 9 can be accommodated in the space covered by the support frame 10.

[0035] The first driving part 21 is connected to the base 8, and the first driving part 21 is specifically connected to the middle of one plate surface of the base 8. The first driving part 21 can be fixedly connected to the base 8 by, for example, bolts.

[0036] The turntable is connected to the first driving part 21, and the turntable is specifically connected to the moving end of the first driving part 21, so that the first driving part 21 can drive the turntable to move linearly. The turntable can be directly connected to the moving end of the first driving part 21, or the turntable can be indirectly connected to the moving end of the first driving part 21 through an intermediate transmission structure. For example, the turntable moves linearly under the driving of the first driving part 21. If the moving type of the moving end of the first driving part 21 is linear motion, the turntable can be connected between the moving end of the first driving part 21. If the moving type of the moving end of the first driving part 21 is rotary motion, the turntable can be connected to the moving end of the first driving part 21 through a motion conversion mechanism such as a rocker.

[0037] The second driving part 9 is connected to the base 8, and the second driving part 9 is in transmission cooperation with the turntable to enable the first component in the turntable to rotate relative to the second component.

[0038] The cutter head 15 is connected with the first component, so that the cutter head 15 can rotate with the first component relative to the second component. The cutter head 15 is provided with cutters and a second matching part 14. According to needs, 2-8 cutters can be provided on the cutter head 15. In actual implementation, the shape of the cutter head 15 can be configured as a disc, each cutter is detachably connected with the cutter head 15, each cutter is arranged in a circle and the arrangement center coincides with the center of the cutter head 15. When the turntable is driven by the first driving part 21 and the second driving part 9, the second matching part 14 can cooperate with the first matching part 13 to limit the rotation of the turntable relative to the first driving part 21, so that the cutters on the cutter head 15 can be in a relatively fixed state to process the workpiece to be processed.

[0039] The vertical automatic tool changing system for ultra-precision cutting machining provided in the embodiments of the present application is connected to the machining equipment through the first driving member 21 to drive the rotary table to move, and the first matching part 13 on the base 8 and the second matching part 14 on the tool disc 15 are separated, so that the first part in the rotary table can rotate relative to the second part under the driving of the second driving member 9. The tool disc 15 is driven to rotate by the rotary table, and the tools at different positions on the tool disc 15 can correspond to the positions of the workpiece to be machined, so as to achieve the purpose of tool positioning. After the position of the tool is determined, the first driving member 21 drives the rotary table to move so that the first matching part 13 and the second matching part 14 are matched. At this time, the first part is limited in the circumferential direction, that is, the first part cannot rotate freely relative to the second part, so that the tool can perform normal machining work. In the present application, the first part of the rotary table is driven to rotate by the second driving member 9, and then the first driving member 21 drives the rotary table to make the first matching part 13 and the second matching part 14 matched. The torque borne by the rotary table during machining is shared by the first matching part 13 and the second matching part 14. The second driving member 9 only provides the function of rotation adjustment and basically does not share the torque borne by the rotary table, which can ensure the service life of the second driving member 9. The transmission structure between the second driving member 9 and the rotary table is basically not stressed, which can ensure the structural integrity of the transmission structure and the position adjustment accuracy of the tool, thereby ensuring the machining accuracy of the machining equipment. At the same time, the vertical automatic tool changing system for ultra-precision cutting machining provided in the present application has a relatively simple structure and easy control, which can make it have a high tool changing efficiency, thereby improving the overall machining efficiency of the machining equipment.

[0040] In some optional embodiments, the first matching part 13 and the second matching part 14 are configured as toothed discs that can be engaged with each other.

[0041] In the embodiments of the present application, the first matching part 13 and the second matching part 14 are configured as toothed discs. When they are engaged with each other, they can form a good mutual restriction, thereby ensuring the relative stability of the tool disc 15 and the base 8, and further ensuring the position stability of the tool, and ensuring the machining accuracy during machining. The teeth on the toothed disc can be straight teeth or bevel teeth. In actual implementation, the teeth on the toothed disc can be configured as bevel teeth. When the first matching part 13 and the second matching part 14 are close to each other to make the first matching part 13 and the second matching part 14 contact each other, the bevel teeth can play a positioning role. Compared with straight teeth, the bevel teeth do not interfere with each other to cause the tool disc 15 to be unable to move along the central axis of the rotary table. In other words, the bevel teeth allow a certain alignment error, have a relatively low control accuracy requirement, are easy to control, and can improve the overall tool changing efficiency of the system. In addition, the multi-angle positioning of the toothed disc can be realized by increasing the number of teeth on the toothed disc or adjusting the tooth pitch.

[0042] In some optional embodiments, the first driving member 21 is configured as a pneumatic cylinder, and the actual implementation of the first driving member 21 can provide a pulling force of not less than 400 N.

[0043] In the embodiments of the present application, the pneumatic cylinder has the advantages of fast response and energy saving compared with other driving structures. In addition, the working states of the turntable in the embodiments of the present application are only two, i.e., when the first matching part 13 and the second matching part 14 are matched, and when the first matching part 13 and the second matching part 14 are separated from each other. Therefore, the pneumatic cylinder can be directly used to drive the turntable to move, and the pneumatic cylinder is easier to control. The inflow and outflow of gas can be controlled to achieve accurate position control and speed control, which is suitable for precise process requirements and can improve the overall tool changing efficiency of the system.

[0044] In some optional embodiments, the turntable can include a turntable base 19, a rotating drum 17 and a driven member. The turntable base 19 is connected with the first driving member 21. The turntable base 19 can be specifically configured as a cylinder. The turntable base 19 is specifically fixedly connected with the moving end of the first driving member 21 to ensure the stability of the relative state of the turntable base 19 and the first driving member 21. The rotating drum 17 is sleeved on the turntable base 19 and can freely rotate relative to the turntable base 19. That is, the first part is configured as the rotating drum 17, and the second part is configured as the turntable base 19. The tool holder 15 is connected with the rotating drum 17. The driven member is arranged on the rotating drum 17 and is in transmission cooperation with the second driving member 9 to drive the rotating drum 17 to rotate on the turntable base 19 under the driving of the second driving member 9.

[0045] The base 8 can further be provided with a guide rod 20. The turntable base 19 is in sliding cooperation with the guide rod 20. The guide rod 20 can guide the turntable base 19 to ensure the accuracy of the movement direction of the turntable base 19.

[0046] In some optional embodiments, the driven member can be configured as a gear ring 16. The driven member is sleeved on the rotating drum 17 to form a tight fit. The second driving member 9 drives the gear ring 16 to rotate through the driving gear 11.

[0047] In the embodiments of the present application, the driven member is configured as the gear ring 16, and the second driving member 9 drives the driven member to rotate through the driving gear 11. The first driving member 21 and the gear ring 16 can be arranged in a left-right arrangement. Compared with the coaxial connection of the second driving member 9 and the driven member through a shaft coupling or the like, the left-right arrangement can reduce the overall length of the tool changing system, the space utilization is more reasonable, the structure is simpler, and the manufacturing and assembly are more convenient.

[0048] In some optional embodiments, a bearing is arranged between the rotating drum 17 and the turntable base 19. The bearing can be configured as a radial bearing.

[0049] In the embodiments of the present application, the bearing is arranged between the rotating drum 17 and the rotary table base 19, which can improve the rotating fluency of the rotating drum 17 and the rotary table base 19, so that the rotating drum 17 can quickly and accurately respond to the second driving member 9 to rotate, thereby ensuring the position accuracy of the tool. For example, when the second driving member 9 is configured as a motor, if N pulses are sent to the motor, the rotating drum 17 can rotate an angle corresponding to the N pulses, which is beneficial to the position control of the tool.

[0050] In some optional embodiments, the base 8 is provided with a sensor 18 for detecting the position of the rotary table in the linear direction.

[0051] In the embodiments of the present application, the position of the rotary table can be detected in real time through the arrangement of the sensor 18, which can avoid the problem of collision between the first matching part 13 and the second matching part 14, and ensure the safety of the structure movement. At the same time, the feedback of the sensor 18 can also provide a basis for judging whether the first matching part 13 and the second matching part 14 are matched, which ensures the accuracy of the relative position of the tool and the workpiece to be machined, and ensures the safety in the machining process.

[0052] In some optional embodiments, the sensor 18 is configured as a photoelectric sensor.

[0053] In the embodiments of the present application, the photoelectric sensor 18 has high detection accuracy, which is beneficial to determining the accurate position of the tool; at the same time, the photoelectric sensor 18 is a non-contact sensor 18, which is suitable for the occasion where the rotary table needs to move in the present application; and the photoelectric sensor 18 responds relatively quickly, which can improve the overall tool changing efficiency of the tool changing system.

[0054] In some optional embodiments, a pre-tightening spring 22 is arranged between the first driving member 21 and the rotary table. Specifically, one end of the pre-tightening spring 22 can be fixedly connected with the base 8 or the fixed end of the first driving member 21, and the other end of the pre-tightening spring 22 is connected with the rotary table. The pre-tightening spring 22 can provide a certain pre-tightening force, thereby ensuring the stability of the rotary table in the linear direction during the machining process, i.e., ensuring the accuracy of the relative position of the tool and the workpiece to be machined. In actual implementation, the pre-tightening spring 22 can be configured such that when the first matching part 13 and the second matching part 14 are matched, the pre-tightening force provided by the pre-tightening spring 22 is not less than 100 N.

[0055] In some optional embodiments, the base 8 is further connected with a housing 1, and the housing 1 is used to accommodate the first driving member 21, the second driving member 9 and the rotary table. The housing 1 is further connected with a retaining ring 2 through a cover plate 12, and the retaining ring 2 is used to accommodate the driven member and the driving gear 11 on the second driving member 9. The housing 1 is further provided with an electrical interface 6 and an air path interface 7. Through the arrangement of the housing 1 and the retaining ring 2, the structures in the tool changing system can be protected, and the service life of the tool changing system can be ensured.

[0056] In some optional embodiments, the cutter can include a cutter bar block 4, a cutter holder 5 and a blade cutter bar 3, the cutter holder 5 is fixedly connected with the cutter head 15, the cutter bar block 4 is connected to the end of the cutter holder 5, and the blade cutter bar 3 is connected to the cutter bar block 4.

[0057] The above detailed description further explains the purpose, technical solutions and beneficial effects of the present application. It should be understood that the above description is only a specific embodiment of the present application and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A vertical automatic tool changer system for ultra-precision machining, characterized in that, include: A base (8) is provided with a first mating part (13); A first driving member (21) is connected to the base (8); A turntable, which is connected to the first drive member (21), and the first drive member (21) can drive the turntable to make linear movements; The second driving member (9) is connected to the base (8) and is driven by the turntable so that the first component in the turntable can rotate relative to the second component. The cutter head (15) is connected to the first component. The cutter head (15) is equipped with a cutting tool and a second mating part (14). When the turntable is driven by the first driving member (21) and the second driving member (9), the second mating part (14) can cooperate with the first mating part (13) to restrict the turntable from rotating relative to the first driving member (21).

2. The vertical automatic tool changer for ultra-precision machining according to claim 1, characterized in that, The first mating part (13) and the second mating part (14) are configured as toothed discs capable of meshing with each other.

3. The vertical automatic tool changer for ultra-precision machining according to claim 1, characterized in that, The first drive element (21) is configured as a cylinder.

4. The vertical automatic tool changer for ultra-precision machining according to claim 1, characterized in that, The turntable includes: Turntable base (19), which is connected to the first drive member (21); Rotary drum (17), which is sleeved on the turntable base (19) and can rotate freely relative to the turntable base (19), and the cutter head (15) is connected to the rotary drum (17); A driven member is disposed on the rotating drum (17) and is in transmission cooperation with the second driving member (9) to drive the rotating drum (17) to rotate on the turntable base (19) under the drive of the second driving member (9).

5. The vertical automatic tool changer for ultra-precision machining according to claim 4, characterized in that, The driven member is configured as a gear ring (16), which is fitted onto the rotating cylinder (17) to form a tight fit. The second driving member (9) drives the gear ring (16) to rotate through the driving gear (11).

6. The vertical automatic tool changer for ultra-precision machining according to claim 4, characterized in that, A bearing is provided between the rotating drum (17) and the turntable base (19).

7. The vertical automatic tool changer for ultra-precision machining according to claim 1, characterized in that, A sensor (18) is provided on the base (8), and the sensor (18) is used to detect the position of the turntable in the linear direction.

8. The vertical automatic tool changer for ultra-precision machining according to claim 7, characterized in that, The sensor (18) is configured as a photoelectric sensor.

9. The vertical automatic tool changer for ultra-precision machining according to claim 1, characterized in that, A preload spring (22) is provided between the first drive member (21) and the turntable.

10. The vertical automatic tool changer for ultra-precision machining according to claim 9, characterized in that, The preload spring (22) is configured to provide a preload force of not less than 100N when the first mating part (13) and the second mating part (14) are engaged.

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