Complete resetting device for cutter loosening oil cylinder piston of main shaft of numerical control machine tool

Abstract

The utility model provides a device for completely resetting a piston of a cutter loosening oil cylinder of a main shaft of a numerical control machine tool in place, which comprises a device body, the device body comprises a fixed seat, a supporting seat is welded on the fixed seat, a fixed pipe is welded on the supporting seat, a cutter head component is movably mounted in the fixed pipe, and a movable pipe is movably mounted on the supporting seat. When the device is used, the spindle stops to change a tool, the pushing mechanism pushes the piston to move forwards through the movable seat to compress the disc spring to move forwards to an upper dead center, and after a mechanical arm changes the tool and changes the tool, the elastic force of the disc spring pushes the piston to return. And when the piston returns to the original position, the elastic force of the disc spring is close to zero, and the piston is pulled back to the original position through the joint relay of the movable seats on the pushing mechanism, so that the piston can completely return to the original position.

Description

Technical Field

[0001] The utility model relates to the field of machine tool spindle equipment, in particular to a device for completely returning a tool-releasing oil cylinder piston of a CNC machine tool spindle to its position. Background Art

[0002] A machine tool refers to a machine that manufactures machines. It is a machine tool that mainly uses a turning tool to turn a rotating workpiece. Drills, reamers, reamers, taps, dies and knurling tools can also be used on the lathe for corresponding processing. It is mainly used for processing shafts, discs, sleeves and other workpieces with rotating surfaces. It is the most widely used type of processing equipment in mechanical manufacturing and repair factories. Many CNC machine tool spindle automatic tool changers use a piston to push a disc spring to loosen the tool to achieve tool change. However, sometimes the piston does not fully return to its position, and the spindle rotation drives the piston to rotate. Accidents may occur.

[0003] According to a patent document with an existing publication number of CN115338686A, a processing machine tool spindle is disclosed, which includes a spindle assembly, a lubrication assembly and a heat dissipation assembly; wherein, the spindle assembly includes an axle box, a bearing installed on the inner side of the axle box, a first shaft body and a second shaft body assembled in the bearing and plugged together, and an axle end cover connected to both sides of the axle box for fixing the first shaft body and the second shaft body; the lubrication assembly is arranged on the inner side of the axle box, and the lubrication assembly includes an installation cavity opened in the first shaft body and the second shaft body. When the technical solution is in use, an oil storage tank can be arranged in the spindle through the lubrication assembly for storing oil, and under the action of the solenoid valve and the oil pump, the lubricating oil is continuously discharged and sucked in, providing sufficient lubrication for the bearing in the process, and the lubrication will carry away the heat around the bearing. With respect to the above technical solution, although the solution completes the lubrication of the bearing, it is unable to fully restore the internal piston to its position during use, which is not convenient for later tool change. Utility Model Content

[0004] In view of the shortcomings of the prior art, the utility model aims to provide a device for completely returning the piston of the tool releasing cylinder of a CNC machine tool spindle to its original position, so as to solve the problems raised in the above-mentioned background technology. The utility model has a novel structure. When in use, the spindle stops to change the tool, and the pushing mechanism pushes the piston forward through the movable seat to compress the disc spring to the upper dead center, and the manipulator changes the tool. After the tool is changed, the disc spring elastic force pushes the piston back to its original position. As the compression distance of the disc spring decreases, the elastic force decreases linearly, so the elastic force approaches zero when returning to the original position. This is because the movable seat on the pushing mechanism jointly relays the piston back to the origin, thereby facilitating the piston to completely return to its original position.

[0005] In order to achieve the above-mentioned purpose, the utility model is implemented through the following technical scheme: a device for completely returning the piston of the spindle tool loosening cylinder of a CNC machine tool to its original position, including a device body, the device body including a fixed seat, a support seat welded on the fixed seat, a fixed tube welded on the support seat, a cutter head assembly movably installed inside the fixed tube, a movable tube movably installed on the support seat, a movable disk fixedly installed at one end of the movable tube, a pushing mechanism fixedly installed on the movable disk, a power mechanism fixedly installed on the support seat, and a gear column installed on the power mechanism.

[0006] Furthermore, a rotating column is rotatably installed inside the support seat, and both ends of the rotating column are installed inside the support seat through bearing seats, and a movable column is installed on the pushing mechanism.

[0007] Furthermore, a movable seat is fixed at one end of the movable column, the movable seat is movably installed inside the movable tube, a limiting column is movably installed inside the movable tube, and a disc spring is fixed at one end of the limiting column.

[0008] Furthermore, a piston is fixed at one end of the disc spring, and the piston cooperates with a movable seat. A limit seat is movably installed inside the piston, and a pull rod is fixed on the limit seat. The pull rod is movably installed inside the limit column, and one end of the pull rod is movably installed inside the cutter head assembly.

[0009] Furthermore, a connecting column is welded to one end of the limiting column, a supporting column is welded to one end of the connecting column, one end of the supporting column is connected via a positioning assembly, and a supporting mechanism is movably mounted on the positioning assembly.

[0010] Furthermore, a small gear is movably mounted on the rotating column, a connecting seat is fixed to one end of the small gear, a large gear is fixed to one side of the connecting seat, and the large gear matches the gear column.

[0011] Furthermore, a tooth groove is formed on the support column, and the tooth groove matches with the large gear. A tooth ring is fixed on the support column, and the tooth ring matches with the small gear.

[0012] Furthermore, a fixing hole is opened on the fixing seat, and the gear column is rotatably installed inside the supporting seat.

[0013] The beneficial effects of the utility model include: the device for fully returning the piston of the spindle tool loosening cylinder of a CNC machine tool to its original position, comprising a fixed seat; a supporting seat; a fixed pipe; a tool head assembly; a movable pipe; a movable disk; a pushing mechanism; a power mechanism; a fixed hole; a gear column; a rotating column; a movable column; a movable seat; a piston; a limit seat; a pull rod; a limit column; a disc spring; a small gear; a supporting column; a connecting seat; a large gear; a positioning assembly; a supporting mechanism; a tooth groove; a tooth ring; and a connecting column.

[0014] 1. The CNC machine tool spindle tool release cylinder piston is fully restored to its position device. When in use, the spindle stops to change the tool, and the pushing mechanism pushes the piston forward through the movable seat to compress the disc spring to advance to the top dead center, and the manipulator changes the tool. After the tool is changed, the disc spring elastic force pushes the piston back to its position. The shorter the disc spring compression distance, the smaller the elastic force linearly decreases, so the disc spring elastic force approaches zero when returning to its original position. This is because the movable seat on the pushing mechanism jointly relays the piston back to the origin, so that the piston can be fully restored to its position.

[0015] 2. The CNC machine tool spindle tool release cylinder piston is fully restored to the position device, and the movable seat can drive the limit column, the connecting column and the support column to move again through the piston. When the support column moves again, the large gear is pushed to separate from the tooth groove through the tooth ring. After separation, the large gear is in an idling state, so that the small gear and the tooth ring cooperate to complete the speed adjustment to meet the adjustment under different circumstances. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a device for completely returning the piston of a spindle tool-releasing oil cylinder of a CNC machine tool to its position according to the utility model;

[0017] Figure 2 It is a structural schematic diagram of a side view of a support seat of a device for fully returning the piston of a tool-releasing oil cylinder of a CNC machine tool spindle to its position according to the utility model;

[0018] Figure 3 It is a structural schematic diagram of the enlarged point B of the device for fully returning the piston of the tool release oil cylinder of the CNC machine tool spindle of the utility model;

[0019] Figure 4 It is a structural schematic diagram of point A of the utility model of the CNC machine tool spindle tool release oil cylinder piston fully returning to the position after enlargement;

[0020] In the figure: 1. fixed seat; 2. supporting seat; 3. fixed tube; 4. cutter head assembly; 5. movable tube; 6. movable disk; 7. driving mechanism; 8. power mechanism; 9. fixing hole; 10. gear column; 11. rotating column; 12. movable column; 13. movable seat; 14. piston; 15. limit seat; 16. pull rod; 17. limit column; 18. disc spring; 19. small gear; 20. supporting column; 21. connecting seat; 22. large gear; 23. positioning assembly; 24. supporting mechanism; 25. tooth socket; 26. tooth ring; 27. connecting column. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] See also Figures 1 to 4The utility model provides a technical solution: a device for fully returning the piston of a spindle tool-loosening oil cylinder of a CNC machine tool to its original position, comprising a device body, the device body comprising a fixed seat 1, a support seat 2 is welded on the fixed seat 1, a fixed pipe 3 is welded on the support seat 2, a cutter head assembly 4 is movably installed inside the fixed pipe 3, a movable pipe 5 is movably installed on the support seat 2, a movable plate 6 is fixedly installed at one end of the movable pipe 5, a pushing mechanism 7 is fixedly installed on the movable plate 6, and the pushing mechanism 7 is a hydraulic push rod, which drives the movable seat 1 under the push of oil pressure in the later stage 3, a power mechanism 8 is fixedly installed on the support seat 2, and the power mechanism 8 is a DC motor. The DC motor provides the required power for the rotation of the gear column 10. The gear column 10 is installed on the power mechanism 8, and a rotating column 11 is rotatably installed inside the support seat 2. Both ends of the rotating column 11 are installed inside the support seat 2 through bearing seats. A movable column 12 is installed on the pushing mechanism 7. The rotating column 11 rotates under the drive of the small gear 19 and the large gear 22, and provides the required supporting force for the large gear 22 and the small gear 19 while rotating.

[0023] In this embodiment, a movable seat 13 is fixed to one end of the movable column 12, and the movable seat 13 is movably installed in the movable tube 5. A limiting column 17 is movably installed in the movable tube 5. A disc spring 18 is fixed to one end of the limiting column 17. A piston 14 is fixed to one end of the disc spring 18. The piston 14 cooperates with the movable seat 13. A limiting seat 15 is movably installed in the piston 14. A pull rod 16 is fixed on the limiting seat 15. The pull rod 16 is movably installed in the limiting column 17. One end of the pull rod 16 is movably installed in the cutter head assembly 4. One end of the limiting column 17 A connecting column 27 is welded, and a support column 20 is welded to one end of the connecting column 27. One end of the support column 20 is connected through a positioning assembly 23. A supporting mechanism 24 is movably installed on the positioning assembly 23. The supporting mechanism 24 is a supporting spring. The supporting spring provides supporting force for the cutter head assembly 4. After the pull rod 16 loses the pulling force on the cutter head assembly 4, the supporting mechanism 24 cooperates with the positioning assembly 23 to push the cutter head assembly 4 to be quickly exposed outward. After exposure, the tool is replaced. The positioning assembly 23 consists of a positioning tube and a positioning column. The positioning column moves inside the positioning tube, thereby providing horizontal limit for the movement of the cutter head assembly 4.

[0024] In this embodiment, a small gear 19 is movably mounted on the rotating column 11, a connecting seat 21 is fixed at one end of the small gear 19, a large gear 22 is fixed on one side of the connecting seat 21, the large gear 22 cooperates with the gear column 10, a tooth groove 25 is opened on the support column 20, the tooth groove 25 cooperates with the large gear 22, a tooth ring 26 is fixed on the support column 20, the tooth ring 26 cooperates with the small gear 19, a fixing hole 9 is opened on the fixed seat 1, the gear column 10 is rotatably mounted inside the support seat 2, when the support column 20 moves again, the large gear 22 is pushed to separate from the tooth groove 25 through the tooth ring 26, after separation, the large gear 22 is in an idling state, so that the small gear 19 cooperates with the tooth ring 26 to complete the speed adjustment.

[0025] The device provides the required electrical energy to the electrical appliances inside the device through an external power supply. When the device is used, the spindle stops to change the tool, and the pushing mechanism 7 pushes the movable column 12 to move under the push of external oil pressure. The movement of the movable column 12 causes the movable seat 13 to push the piston 14 forward and compress the disc spring 18 to advance to the top dead center, and the manipulator changes the tool. After the tool is changed, the elastic force of the disc spring 18 pushes the piston 14 back to its original position. According to the fact that the shorter the compression distance of the disc spring 18, the shorter the elastic force linearly decreases, so when returning to the original position, the elastic force of the disc spring 18 approaches zero. This is because the movable seat 13 on the pushing mechanism 7 jointly relays the piston 14 back to the origin, thereby facilitating the piston 14 to fully return to its original position. After the movable seat 13 removes the pulling force on the piston 14, the movable seat 13 pushes the disc spring 18 The limit seat 15 and the pull rod 16 are moved. When the pull rod 16 loses the pulling force on the cutter head assembly 4, the support mechanism 24 cooperates with the positioning assembly 23 to push the cutter head assembly 4 to be quickly exposed outward. After being exposed, the tool is replaced. The positioning assembly 23 is a positioning tube and a positioning column. The positioning column moves inside the positioning tube, thereby providing horizontal limit for the movement of the cutter head assembly 4. Later, after the cutter head assembly 4 enters the inside of the fixed tube 3, the support mechanism 24 and the positioning assembly 23 cooperate to provide multi-point support for the cutter head assembly 4. Later, when the support column 20 moves again, the gear ring 26 pushes the large gear 22 to separate from the tooth groove 25. After separation, the large gear 22 is in an idling state, so that the small gear 19 cooperates with the gear ring 26 to complete the speed adjustment.

[0026] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A device for fully returning the piston of a spindle tool release cylinder of a CNC machine tool to its position, comprising a device body, characterized in that: The device body comprises a fixed seat (1), a support seat (2) is welded to the fixed seat (1), a fixed tube (3) is welded to the support seat (2), a cutter head assembly (4) is movably mounted inside the fixed tube (3), a movable tube (5) is movably mounted on the support seat (2), a movable disk (6) is fixedly mounted on one end of the movable tube (5), a pushing mechanism (7) is fixedly mounted on the movable disk (6), a power mechanism (8) is fixedly mounted on the support seat (2), and a gear column (10) is mounted on the power mechanism (8).

2. The device for fully returning the piston of the spindle tool release cylinder of a CNC machine tool according to claim 1 is characterized in that: A rotating column (11) is rotatably mounted inside the support seat (2), and both ends of the rotating column (11) are mounted inside the support seat (2) via bearing seats. A movable column (12) is mounted on the pushing mechanism (7).

3. The device for fully returning the piston of the spindle tool release oil cylinder of a CNC machine tool according to claim 2 is characterized in that: A movable seat (13) is fixed to one end of the movable column (12), and the movable seat (13) is movably installed inside the movable tube (5). A limit column (17) is movably installed inside the movable tube (5), and a disc spring (18) is fixed to one end of the limit column (17).

4. The device for fully returning the piston of the spindle tool release oil cylinder of a CNC machine tool according to claim 3 is characterized in that: A piston (14) is fixed to one end of the disc spring (18), and the piston (14) cooperates with the movable seat (13). A limit seat (15) is movably installed inside the piston (14), and a pull rod (16) is fixed on the limit seat (15). The pull rod (16) is movably installed inside the limit column (17), and one end of the pull rod (16) is movably installed inside the cutter head assembly (4).

5. The device for fully returning the piston of the spindle tool release oil cylinder of a CNC machine tool according to claim 4 is characterized in that: A connecting column (27) is welded to one end of the limiting column (17), a supporting column (20) is welded to one end of the connecting column (27), one end of the supporting column (20) is connected via a positioning assembly (23), and a supporting mechanism (24) is movably mounted on the positioning assembly (23).

6. The device for fully returning the piston of the spindle tool release oil cylinder of a CNC machine tool to its position according to claim 5 is characterized in that: A small gear (19) is movably mounted on the rotating column (11), a connecting seat (21) is fixed to one end of the small gear (19), a large gear (22) is fixed to one side of the connecting seat (21), and the large gear (22) matches the gear column (10).

7. The device for fully returning the piston of the spindle tool release cylinder of a CNC machine tool according to claim 6 is characterized in that: The support column (20) is provided with a tooth groove (25), the tooth groove (25) matches with the large gear (22), and a tooth ring (26) is fixed on the support column (20), and the tooth ring (26) matches with the small gear (19).

8. The device for fully returning the piston of the spindle tool release oil cylinder of a CNC machine tool according to claim 1 is characterized in that: The fixing seat (1) is provided with a fixing hole (9), and the gear column (10) is rotatably mounted inside the supporting seat (2).

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