Hydraulic tailstock of numerical control lathe and numerical control lathe
The lifting and expansion of the locking plate and drag pin are controlled hydraulically, which solves the problem of inconvenient operation of the CNC lathe tail frame, and achieves convenient position adjustment and efficient production efficiency.
Patent Information
- Application Number
- CN202422176733.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-05
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-05
AI Technical Summary
The fixing and position adjustment of the existing CNC lathe tail frame is inconvenient, and it requires manual screwing of bolts and pulling and dragging pins, resulting in cumbersome operation and affecting production efficiency.
The lifting and expansion of the locking plate and drag pin are controlled by hydraulic means, thereby realizing the locking and position adjustment of the tail frame and the guide rail. Through the cooperation of the hydraulic power structure with the locking plate and drag pin, the operation process is simplified.
It improves the operation convenience and production efficiency of the tail frame, reduces manual operation, and expands the machining range and machining accuracy of the lathe.
Smart Images
Figure CN223129377U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of numerical control lathes, in particular to the tailstock structure of a numerical control lathe. Background Art
[0002] Numerical control lathes are collectively referred to as feed-type numerical control lathes. When machining shaft-type workpieces, the workpieces are matched with a high-speed rotating chuck under the support of the tailstock to rotate with it, and then the workpieces are machined by cutting tools. The existing tailstock is usually installed on the guide rail of the numerical control lathe. To match workpieces of different models, the tailstock needs to be moved along the guide rail to an appropriate position and then fixed. The existing structure for fixing the tailstock to the guide rail generally uses bolts. During adjustment, the bolts are loosened manually, and then tightened after adjustment. This operation method is relatively inconvenient; in addition, a pull-out drag pin is provided on the tailstock. When the tailstock needs to be moved, the drag pin is manually pulled out and connected to the drag plate of the lathe, and then the drag plate drives the tailstock to move along the guide rail to achieve position adjustment. The operation of this drag pin is inconvenient. In summary, there is room for improvement in the tailstock structure of the existing numerical control lathe. Summary of the Utility Model
[0003] The technical problem solved by the present disclosure is to provide an improved hydraulic tailstock for a numerical control lathe, which is more convenient to operate; and to provide a numerical control lathe with such a hydraulic tailstock.
[0004] The technical solution adopted by the utility model to solve its technical problems is: a hydraulic tailstock for a numerical control lathe, the hydraulic tailstock includes a base, the base is provided with a chute for cooperating with the guide rail of the numerical control lathe, a first hydraulic power structure is installed on the base, a locking plate is installed at the chute, the first hydraulic power structure is connected to the locking plate, and the first hydraulic power structure controls the lifting of the locking plate to regulate the locking of the base and the guide rail; a second hydraulic power structure and a drag pin are installed on the base, and the second hydraulic power structure controls the horizontal expansion and contraction of the drag pin to cooperate with the drag plate of the numerical control lathe.
[0005] For the hydraulic tailstock of a numerical control lathe as described above, the first hydraulic power structure includes a first chamber and a piston. The piston is installed in the first chamber in a liftable manner. An upper hydraulic chamber and a lower hydraulic chamber are respectively formed above and below the piston in the first chamber. The upper hydraulic chamber and the lower hydraulic chamber are respectively communicated with corresponding hydraulic pipelines. The upper part and the lower part of the piston respectively extend out an upper rod body and a lower rod body. The upper rod body passes through the upper part of the first chamber, and the lower rod body passes through the lower part of the first chamber to be connected to the locking plate.
[0006] A hydraulic tailstock of a numerically controlled lathe as described above, a first through hole is opened at the bottom of the base, and the upper and lower parts of the first through hole are fixedly sealed by an upper end cover and a lower end cover respectively to form the first chamber.
[0007] A hydraulic tailstock of a numerically controlled lathe as described above, holes are opened in the middle of both the upper end cover and the lower end cover for the upper rod body and the lower rod body to pass through respectively; first seals are arranged between the piston, the upper end cover, the lower end cover and the first through hole, and between the upper rod body, the lower rod body and the corresponding holes.
[0008] A hydraulic tailstock of a numerically controlled lathe as described above, the base is provided with two parallel chutes, corresponding notches are arranged in the middle of the two chutes, and the locking plate is arranged at the notch.
[0009] A hydraulic tailstock of a numerically controlled lathe as described above, the second hydraulic power structure includes a second chamber, the drag pin is inserted into the second chamber, a window for the drag pin to stretch is arranged at the front end of the second chamber, a front hydraulic chamber and a rear hydraulic chamber are respectively formed at the front side and the rear side of the inner end of the drag pin in the second chamber, and the front hydraulic chamber and the rear hydraulic chamber are respectively connected with corresponding hydraulic pipelines.
[0010] A hydraulic tailstock of a numerically controlled lathe as described above, a second through hole is opened in the base, a front end cover and a rear end cover are fixedly installed at the front end and the rear end of the second through hole respectively to form the second chamber.
[0011] A numerically controlled lathe, on which the hydraulic tailstock as described in any one of the preceding items is installed.
[0012] Advantages of the present disclosure: The improved hydraulic tailstock is installed on the guide rail of the numerically controlled lathe. When the position needs to be adjusted, the locking plate is loosened hydraulically, and the drag pin is also pushed out hydraulically to connect it with the drag plate. Driven by the drag plate, the hydraulic tailstock moves along the guide rail to an appropriate position, and then the locking plate is controlled hydraulically to lock the tailstock and the guide rail. The whole process is more convenient to operate, can avoid the operations of manually screwing bolts and pulling out the drag pin, and improves the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Some specific embodiments of the present invention will be described in detail below in an exemplary but not restrictive manner. The same reference numerals in the drawings denote the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale.
[0014] In the drawings:
[0015] Figure 1 is a schematic view of the cooperation state of the hydraulic tailstock of the present invention and the guide rail of the numerically controlled lathe;
[0016] Figure 2 This is a schematic diagram of the hydraulic tailstock of the present utility model;
[0017] Figure 3 It is Figure 2 a partial schematic diagram of part A in
[0018] Figure 4 This is a first sectional view schematic diagram of the hydraulic tailstock of the present utility model;
[0019] Figure 5 This is a second sectional view schematic diagram of the hydraulic tailstock of the present utility model;
[0020] Figure 6 This is a third sectional view schematic diagram of the hydraulic tailstock of the present utility model;
[0021] The markings in the figure are explained as follows:
[0022] 1. Hydraulic tailstock; 2. Base; 200. Slide groove; 201. Groove opening; 3. Guide rail; 4. First hydraulic power structure; 400. First chamber; 401. Upper end cover; 402. Lower end cover; 403. Piston; 404. Upper rod body; 405. Lower rod body; 406. Upper hydraulic chamber; 407. Lower hydraulic chamber; 408. Oil return T port; 409. Oil inlet P port; 5. Drag pin; 6. Second chamber; 601. Front hydraulic chamber; 602. Rear hydraulic chamber; 603. Oil inlet pipeline; 604. Oil return pipeline. Specific embodiments
[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model.
[0024] Based on the described embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present utility model. Unless otherwise defined, the technical terms or scientific terms used in this disclosure shall have the ordinary meaning as understood by those of ordinary skill in the art to which the present utility model pertains.
[0025] As used in this disclosure, the terms "first", "second" and similar terms do not denote any order, quantity or importance, but are merely used to distinguish different components. Similarly, terms such as "a", "an" or "the" do not denote a quantity limitation, but rather indicate the presence of at least one. Terms such as "comprising" or "including" mean that the elements or items appearing before this term cover the elements or items listed after this term and their equivalents, without excluding other elements or items. Terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Terms such as "upper", "lower", "left" and "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.
[0026] Refer to the appendix Figure 1 , which shows the mating state of the hydraulic tailstock of a numerically controlled lathe and the guide rail of the numerically controlled lathe. Among them, the hydraulic tailstock 1 includes a base 2, and a chute 200 is provided at the bottom of the base 2 for mating with the guide rail of the numerically controlled lathe. The base 2 is equipped with a first hydraulic power structure 4, and a locking plate is installed at the chute 200. The first hydraulic power structure is connected to the locking plate, and the first hydraulic power structure controls the lifting of the locking plate to adjust the locking of the base 2 and the guide rail. The base 2 is equipped with a second hydraulic power structure and a drag pin 5. The second hydraulic power structure controls the horizontal expansion and contraction of the drag pin 5 to cooperate with the drag plate of the numerically controlled lathe.
[0027] The chute 200 of the upper base 2 of the hydraulic tailstock 1 mates with the guide rail of the numerically controlled lathe. When the first hydraulic power structure 4 is started to raise the locking plate, the locking plate tightly abuts against the guide rail 3, so that the base 2 and the guide rail 3 are locked at the current position. When it is necessary to adjust the position of the tailstock for machining workpieces of different models, the first hydraulic power structure 4 is started to lower the locking plate to release the guide rail 3, the drag pin 5 is extended by the second hydraulic power structure to be connected to the drag plate on the lathe, and then the drag plate applies force to drag the hydraulic tailstock 1 along the guide rail 3 to an appropriate position. The first hydraulic power structure 4 is started again to raise the locking plate to lock it with the guide rail 3.
[0028] Drag pin 5 connects the tailstock to the carriage of the lathe. The power system of the lathe transmits power to the tailstock through drag pin 5. The tailstock moves stably on the guide rail 3 to achieve accurate position adjustment. Then, the locking plate is lifted by hydraulic power control to lock the tailstock to the guide rail 3, strengthening the stability of the tailstock position and facilitating the improvement of machining accuracy. Compared with the previous method of manually screwing bolts and pulling out drag pin 5, the operation of the improved tailstock is more convenient, enabling the lathe to more flexibly adapt to the machining requirements of workpieces of different sizes and shapes, which is conducive to expanding the machining range of the lathe. In addition, manual operation can be reduced, which is beneficial to improving production efficiency.
[0029] Refer to the appendix Figure 4-5 In some embodiments, the first hydraulic power structure 4 includes a first chamber 400 and a piston 403. The piston 403 is installed in the first chamber 400 in a liftable manner. An upper hydraulic chamber 406 and a lower hydraulic chamber 407 are respectively formed above and below the piston 403 in the first chamber 400. The upper hydraulic chamber 406 and the lower hydraulic chamber 407 are respectively connected to corresponding hydraulic pipelines for adjusting the pressure in the chambers to control the movement of the piston 403. Upper rod body 404 and lower rod body 405 respectively extend from the upper and lower parts of the piston 403. The upper rod body 404 passes through the upper part of the first chamber 400, and the lower rod body 405 passes through the lower part of the first chamber 400 to be connected to the locking plate.
[0030] The piston 403, the upper rod body 404, and the lower rod body 405 are usually integrally formed. The piston 403 fits tightly with the inner wall of the first chamber 400 to form sealed upper and lower hydraulic chambers 406 and 407 above and below the piston 403. The upper hydraulic chamber 406 is connected to the oil return T port 408 via a hydraulic pipeline, and the lower hydraulic chamber 407 is connected to the oil inlet P port 409 via a hydraulic pipeline. Under the control of the externally connected corresponding hydraulic system, the pressures of the upper hydraulic chamber 406 and the lower hydraulic chamber 407 are regulated via the hydraulic pipeline, causing the piston 403 to move up and down in the first chamber 400, and driving the locking plate to lift and lower through the lower rod body 405. When the locking plate rises, it locks with the guide rail 3 and the base 2 is fixed; when the locking plate descends, the locking with the guide rail 3 is released and the base 2 can move along the guide rail 3.
[0031] Generally, a first through hole is opened at the bottom of the base 2, and the upper and lower parts of the first through hole are fixedly sealed by an upper end cap 401 and a lower end cap 402 respectively to form the first chamber 400. The cylindrical first through hole is longitudinally and penetratingly opened on the base 2, and the upper end cap 401 is tightly locked at the top surface of the first through hole by bolts, and the lower end cap 402 is tightly locked at the bottom surface of the second through hole by bolts, thereby forming a sealed first chamber 400. The hydraulic pipelines connected to the upper hydraulic chamber 406 and the lower hydraulic chamber 407 can penetrate into the side wall of the first through hole, so as to apply hydraulic power to the piston 403 via the upper hydraulic chamber 406 and the lower hydraulic chamber 407 to make it move up and down.
[0032] Furthermore, holes are opened in the middle parts of both the upper end cap 401 and the lower end cap 402 for the upper rod body 404 and the lower rod body 405 to pass through respectively; first seals are arranged between the piston 403, the upper end cap 401, the lower end cap 402 and the first through hole, and between the upper rod body 404, the lower rod body 405 and the corresponding holes. The first seals are usually O-rings. The upper rod body 404 and the lower rod body 405 pass through the corresponding holes. When the piston 403 moves up and down, the upper rod body 404 and the lower rod body 405 can move along in the holes, which can enhance the stability of the movement of the piston 403.
[0033] Refer to the appendix Figure 2-3 , in some embodiments, the base 2 is provided with two parallel chutes 200, the middle parts of the two chutes 200 are provided with corresponding notches 201, and the locking plate is arranged at the notch 201. The middle of the locking plate is connected to the lower rod body 405 of the piston 403. The locking plate extends horizontally so that its two ends respectively reach the notches 201 of the corresponding chutes 200. When the locking plate rises, it can abut against and contact the guide rail 3 in the chute 200 through the notch 201, thereby locking it and realizing the fixation of the base 2.
[0034] Refer to the appendix Figure 6 , in some embodiments, the second hydraulic power structure includes a second chamber 6, the dragging pin 5 is inserted into the second chamber 6, a window for the dragging pin 5 to stretch is provided at the front end of the second chamber 6, front and rear hydraulic chambers 601 and 602 are respectively formed at the front side and the rear side of the inner end of the dragging pin 5 in the second chamber 6, and the front hydraulic chamber 601 and the rear hydraulic chamber 602 are respectively connected to corresponding hydraulic pipelines to be used for regulating the pressure in each chamber to control the extension and retraction of the dragging pin 5.
[0035] The inner end of the drag pin 5 is inserted into the second chamber 6, and the peripheral wall surface of its inner end is in close contact with the inner wall of the second chamber 6, thereby dividing the second chamber 6 into a front hydraulic chamber 601 and a rear hydraulic chamber 602. The front hydraulic chamber 601 is connected to the return oil pipeline 604, and the rear hydraulic chamber 602 is connected to the oil inlet pipeline 603, and then both are connected to the corresponding hydraulic systems to be regulated by them to achieve pressure regulation in the second chamber 6. When the pressure in the rear hydraulic chamber 602 increases and the front hydraulic chamber 601 is depressurized, the drag pin 5 extends relative to the second chamber 6, and vice versa, the drag pin 5 retracts.
[0036] In some embodiments, the base 2 is provided with a second through hole, and a front end cover and a rear end cover are fixedly installed at the front end and the rear end of the second through hole respectively to form the second chamber 6. The second through hole runs horizontally through, and the front end cover and the rear end cover are fixed to the second through hole by bolts. A window is provided on the front end cover, and the drag pin 5 passes through the window. The oil inlet pipeline 603 is connected to the rear hydraulic chamber 602 through the rear end cover, and the return oil pipeline 604 can be connected to the side wall of the second through hole and is correspondingly connected to the front hydraulic chamber 601. Second seals can be provided between the inner end of the drag pin 5, the front end cover, the rear end cover and the second chamber 6 to enhance the sealing performance. Usually, the second seals also adopt sealing rings.
[0037] A numerically controlled lathe is provided, and the hydraulic tailstock 1 described in any one of the preceding items is installed on the lathe. Specifically, the lathe has a guide rail 3 and a drag plate. The hydraulic tailstock 1 is matched with the guide rail 3 on the lathe through the chute 200 on the base 2, and the first hydraulic power structure 4 is used to control the lifting of the locking plate to adjust the locking of the tailstock and the guide rail 3; the second hydraulic power structure is used to control the movement of the drag pin 5 to cooperate with the drag plate, and the tailstock is driven to move along the guide rail 3 through the drag plate to adjust the tailstock to an appropriate position to adapt to the processing requirements of different types of workpieces.
[0038] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications, combinations and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.
Claims
1. A hydraulic tailstock for a numerically controlled lathe, the hydraulic tailstock comprising a base provided with a chute for cooperating with the guide rail of the numerically controlled lathe, characterized in that: The base is provided with a first hydraulic power structure, and a locking plate is installed at the chute. The first hydraulic power structure is connected to the locking plate, and the first hydraulic power structure controls the lifting of the locking plate to adjust the locking between the base and the guide rail; The base is provided with a second hydraulic power structure and a drag pin. The second hydraulic power structure controls the horizontal expansion and contraction of the drag pin to cooperate with the drag plate of the numerically controlled lathe.
2. The hydraulic tailstock for a numerically controlled lathe according to claim 1, characterized in that: The first hydraulic power structure includes a first chamber and a piston. The piston is installed in the first chamber in a liftable manner. An upper hydraulic chamber and a lower hydraulic chamber are respectively formed above and below the piston in the first chamber. The upper hydraulic chamber and the lower hydraulic chamber are respectively communicated with corresponding hydraulic pipelines. Upper and lower rod bodies respectively extend from the upper and lower parts of the piston. The upper rod body passes through the upper part of the first chamber, and the lower rod body passes through the lower part of the first chamber to be connected to the locking plate.
3. The hydraulic tailstock for a numerically controlled lathe according to claim 2, characterized in that: A first through hole is opened at the bottom of the base, and the upper part and the lower part of the first through hole are respectively fixedly sealed by an upper end cover and a lower end cover to form the first chamber.
4. The hydraulic tailstock for a numerically controlled lathe according to claim 3, characterized in that: Hole positions are opened in the middle parts of both the upper end cover and the lower end cover for the upper rod body and the lower rod body to pass through respectively; First seals are arranged between the piston, the upper end cover, the lower end cover and the first through hole, and between the upper rod body, the lower rod body and the corresponding hole positions.
5. The hydraulic tailstock for a numerically controlled lathe according to claim 2, characterized in that: The base is provided with two parallel chutes, and corresponding notches are provided in the middle parts of the two chutes. The locking plate is arranged at the notch.
6. The hydraulic tailstock for a numerically controlled lathe according to claim 1, characterized in that: The second hydraulic power structure includes a second chamber. The drag pin is inserted into the second chamber. A window for the expansion and contraction of the drag pin is provided at the front end of the second chamber. Front and rear hydraulic chambers are respectively formed in front of and behind the inner end of the drag pin in the second chamber. The front hydraulic chamber and the rear hydraulic chamber are respectively connected to corresponding hydraulic pipelines.
7. The hydraulic tailstock for a numerically controlled lathe according to claim 6, characterized in that: A second through hole is opened in the base, and a front end cover and a rear end cover are respectively fixedly installed at the front end and the rear end of the second through hole to form the second chamber.
8. A numerically controlled lathe, characterized in that: The lathe is installed with the hydraulic tailstock according to any one of claims 1-7.