Total-skill numerical control lathe turret

Abstract

The utility model relates to a full-skill numerical control lathe tool turret which comprises a box body, a mandrel, a cutter head, a movable fluted disc, a static fluted disc, a piston, a large balance wheel, a small balance wheel and a hydraulic motor. When a numerical control system sends a tool changing instruction, pressure oil is introduced into a right cavity of the hydraulic cylinder in the box body, the piston and the mandrel are pushed by the pressure oil to move leftwards, the movable fluted disc and the static fluted disc are disengaged through the tool rest mandrel, and the tool disc is lifted. And then the hydraulic motor is started to drive the indexing small balance wheel and the driven large balance wheel to rotate, a cutter head of the tool turret is driven to rotate through the mandrel, and the tool changing action of the tool turret is achieved. When the cutter head rotates to a specified cutter position, the numerical control system sends out a signal to instruct the hydraulic motor to stop rotating, at the moment, pressure oil enters a left cavity of the hydraulic cylinder to push the piston and the mandrel to move rightwards, the movable fluted disc and the static fluted disc are meshed again, and the locking action of the cutter tower is achieved. The utility model has the characteristics of quick tool change and nearby tool selection, large clamping force, safety, stability and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of CNC turrets, in particular to a full-skill CNC lathe turret. Background Art

[0002] CNC turret toolholders are essential accessories for machining centers and CNC lathes, particularly for fully automatic CNC lathes. Currently, CNC machine tools are rapidly developing, with a focus on high speed, efficiency, and precision. Simultaneously, there is a widespread need in the manufacturing industry for CNC retrofits and systems for existing equipment. As a key accessory, a high-performance CNC turret toolholder is crucial for improving the reliability, stability, and efficiency of machine tool operations. The CNC turret toolholder is controlled and managed by a CNC system.

[0003] The turret of a CNC lathe is one of the most important core components of a CNC lathe. Its performance, quality, and reliability directly affect the accuracy, performance, and efficiency of the entire machine. The upgrading of CNC lathe turret technology has almost paralleled the development of CNC machine tool technology. In recent years, with the maturity of technology and structure, the price of servo drive systems, and the increasingly high demand for cost-effectiveness of CNC lathes, the configuration of new turrets on CNC lathe products has become a matter of great concern in the industry. Utility Model Content

[0004] The utility model is realized through the following technical solutions:

[0005] A turret for a full-skill CNC lathe comprises a housing, a spindle, a cutter disc, a movable gear disc, a static gear disc, a piston, a large balance wheel, a small balance wheel, a bracket and a hydraulic motor. A cavity and oil inlet and outlet passages are provided in the housing, a spindle is provided in the housing, the piston is in the housing and mounted on the spindle, a spacer and a static gear disc are fixedly mounted on the outer wall of the left end of the housing, the static gear disc is fixedly mounted on the outer end of the spacer, a hydraulic motor is fixedly mounted on the right end of the housing through a bracket, a cutter disc is fixedly mounted on the left end of the spindle, the movable gear disc is fixedly mounted on the right side of the cutter disc and is separated and engaged with the static gear disc by movement of the piston, the large balance wheel is fixedly connected to the right side shaft of the spindle, the hydraulic motor is connected to the small balance wheel, and the small balance wheel is rotationally connected to the large balance wheel.

[0006] Furthermore, the radial outer ring at the right end of the piston contacts the box body through a sealing ring, the radial inner ring at the left end is connected to the main shaft through a rolling bearing and can rotate on the main shaft, the radial inner ring at the right end is axially fixed to the main shaft through a gasket and a precision nut, and the radial outer ring at the left end contacts the inner diameter of the spacer ring through a sealing ring.

[0007] Furthermore, the large balance wheel is fixedly connected to the spindle via a tensioning sleeve, and when the large balance wheel rotates, the spindle rotates together.

[0008] Furthermore, the small balance wheel is mounted on the bracket mounting hole through a deep groove ball bearing, and the hydraulic motor is connected to the small balance wheel. The rotation of the hydraulic motor drives the small balance wheel to rotate, and the large balance wheel rotates accordingly.

[0009] Furthermore, the large balance wheel and the small balance wheel are connected through a grooved wheel mechanism.

[0010] Furthermore, the movable gear plate and the stationary gear plate constitute a locking device, and the inner cavity of the box body, the radial outer circle of the piston, and the inlet and outlet oil passages of the box body form a hydraulic cylinder, which drives the movement of the piston by inputting and outputting hydraulic oil, and drives the spindle to move left and right, thereby separating and engaging the movable gear plate and the stationary gear plate.

[0011] Furthermore, the cutter head is an eight-station cutter head, which is equipped with a boring tool holder and a tool pressing block.

[0012] Furthermore, the large balance wheel is a groove wheel structure with eight arc shapes.

[0013] Furthermore, the small balance wheel is an incomplete curved circular wheel, on which two pairs of roller needle bearings with bolts are symmetrically mounted.

[0014] Furthermore, a sensing block is fixedly mounted on the right end of the spindle, and a proximity switch is fixedly mounted on the switch frame close to the sensing block. Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The utility model relates to a full-skill CNC turret. Since the switching power and positioning and clamping of the tool are realized by a hydraulic mechanism, compared with the traditional servo-powered turret, it overcomes the positioning accuracy caused by the inertia of the motor, has a simpler structure, and the size of the turret is greatly reduced. In addition, the tool switching is realized by a grooved wheel transmission device, which improves the transmission accuracy compared with the traditional gear transmission.

[0016] 2. The tool of this utility model can rotate in both directions, and the tool can be selected nearby, which saves tool changing time, improves work efficiency, is fast, safe and stable;

[0017] 3. This utility model adopts hydraulic locking, has strong clamping force, is reliable and durable, and is suitable for heavy cutting;

[0018] 4. This utility model has excellent and fast tool change control performance (rigidity and precision), suitable for use with high-volume production machine tools;

[0019] 5. The utility model has the advantages of simple structure, small space occupation, few metal parts to be processed, simple assembly and low cost.

[0020] 6. Compared with the conventional movable connection of the movable gear plate on the spindle spline, the fixed connection between the spindle shaft and the movable gear plate of the utility model eliminates the spline groove gap and improves the wear resistance precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of a full-skill CNC turret in this utility model.

[0022] Figure 2 This is a schematic diagram of the structure of the large balance wheel of the utility model

[0023] Figure 3 This is a structural diagram of the small balance wheel of the utility model

[0024] Description of main reference numerals:

[0025] 1-housing, 2-spindle, 3-cutter disc, 4-moving gear disc, 5-static gear disc, 6-piston, 7-large balance wheel, 8-small balance wheel, 9-bracket, 10-hydraulic motor, 11-tensioning sleeve, 12-bearing, 13-shaft retaining ring, 14-sealing ring, 15-sensor block, 16-proximity switch, 17-washer, 18-precision nut, 19-rolling bearing, 20-spacer DETAILED DESCRIPTION

[0026] A tool turret for a fully-functional CNC lathe comprises a housing 1, a spindle 2, a cutterhead 3, a movable gear plate 4, a stationary gear plate 5, a piston 6, a large balance wheel 7, a small balance wheel 8, and a hydraulic motor 10. The housing 1 is provided with a cavity and oil inlet and outlet passages. The spindle 2 is mounted within the housing 1. A spacer 20 and the stationary gear plate 5 are fixedly mounted on the outer wall of the left end of the housing 1. The hydraulic motor 10 is fixedly mounted on the right end of the housing 1 via a bracket 9. The cutterhead 3 and the movable gear plate 4 are fixedly mounted on the left end of the spindle 2.

[0027] The radial outer circle of the piston 6 contacts the box body 1, and the radial inner ring is connected to the spindle 2 through a bearing and can rotate relative to the spindle 2. The piston 6 is axially fixed to the spindle 2 through a washer and a precision nut 18.

[0028] The large balance wheel 7 is fixedly connected to the spindle 2 via a tensioning sleeve 11. When the large balance wheel 7 rotates, the spindle 2 rotates together.

[0029] The small balance wheel 8 is fixed on the bracket 9 through a rolling bearing 12 and a shaft retaining ring 13. The hydraulic motor 10 is connected to the small balance wheel 8. The rotation of the hydraulic motor 10 drives the small balance wheel 8 to rotate.

[0030] The large balance wheel 7 and the small balance wheel 8 are connected through a grooved wheel mechanism. When the small balance wheel 8 rotates, the large balance wheel 7 rotates accordingly.

[0031] A fully-functional CNC lathe turret also includes a locking device comprising a movable toothed disc 4 and a stationary toothed disc 5. The movable toothed disc 4 is fixed to the spindle 2, while the stationary toothed disc 5 is fixed to the housing 1. The inner cavity of the housing 1 and the radial outer ring of the piston 6 are connected by a sealing ring 14. Through the sealing ring 14 and the inlet and outlet oil passages of the housing 1, a hydraulic cylinder is formed. The input and output of hydraulic oil and the movement of the piston 6 drive the spindle 2 to move left and right, thereby separating and engaging the movable toothed disc 4 and the stationary toothed disc 5.

[0032] The cutter head 3 is an eight-station cutter head, which can be equipped with a boring tool holder and a tool pressing block.

[0033] The large balance wheel 7 is a groove wheel structure with eight circular arc shapes.

[0034] The small balance wheel 8 is an incomplete curved circular wheel, on which two roller needle bearings with bolts are installed.

[0035] The end of the spindle 2 is fixedly mounted with a sensing block 15. A proximity switch 16 is fixedly mounted on a switch frame close to the sensing block 15.

[0036] A hydraulic system is used to loosen and clamp the turret and index the cutterhead 3 on a full-service CNC lathe. The cutterhead 3, which houses the cutting tools, is fixedly connected to the spindle 2. When the turret spindle 2 rotates the cutterhead 3, the movable gear plate 4 on the turret disengages from the stationary gear plate 5 fixed to the housing 1. After the cutterhead 3 rotates to a desired position, the engagement of the gear plates completes the positioning of the cutterhead 3. A piston 6 is radially supported on the spindle 2 by a rolling bearing 19 and axially fixed to the spindle 2 by a precision nut 18, driving the spindle 2 and cutterhead 3 in axial motion.

[0037] When the lathe's CNC system issues a tool-change command, pressurized oil is introduced into the right chamber of the hydraulic cylinder formed by housing 1, piston 6, and spacer 20 through the oil passage of housing 1. Driven by the pressurized oil, piston 6 and spindle 2 move leftward, disengaging the movable and stationary gear discs 4 and 5 via the toolholder spindle 2, lifting the cutter disc 3. The hydraulic motor 10 then starts, driving the indexing small balance wheel 8 and the driven large balance wheel 7 to rotate, which in turn drives the turret's cutter disc 3 via spindle 2, achieving the turret's tool change. The indexing speed and angular displacement are precisely controlled by a semi-closed-loop feedback system.

[0038] When the cutter head 3 rotates to the specified tool position, the CNC system sends a signal to instruct the hydraulic motor 10 to stop. At this time, the pressure oil enters the left chamber of the hydraulic cylinder through the oil channel of the box body 1, pushing the piston 6 and the spindle 2 to the right, causing the movable gear plate 4 and the static gear plate 5 to re-engage, realizing the locking action of the turret.

[0039] Cutterhead 3 is positioned and clamped, sending a signal to the CNC system that it's in position, completing the turret's rotation and tool change cycle. When the CNC lathe is operating automatically, upon receiving the tool number for a tool change command, the CNC system uses internal calculations to determine the nearest position for the tool change. This means that the toolhead 3 can rotate both forward and reverse. However, when the lathe is operated manually, only clockwise rotation is permitted.

[0040] The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that these embodiments can be modified and improved without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents, and these modifications and improvements should also be within the protection scope of the present invention.

Claims

1. A full-skill CNC lathe turret, characterized by: The invention comprises a housing (1), a spindle (2), a cutter disc (3), a movable gear disc (4), a static gear disc (5), a piston (6), a large balance wheel (7), a small balance wheel (8), a bracket (9) and a hydraulic motor (10), wherein a cavity and an oil inlet and outlet passage are provided in the housing (1), a spindle (2) is provided in the housing (1), the piston (6) is in the housing (1) and is mounted on the spindle (2), a spacer (20) and a static gear disc (5) are fixedly mounted on the outer wall of the left end of the housing (1), and the static gear disc (5) is provided. ) is fixedly mounted on the outer end of the spacer (20), a hydraulic motor (10) is fixedly mounted on the right end of the box body (1) through a bracket (9), a cutter disc (3) is fixedly mounted on the left end of the spindle (2), a movable gear disc (4) is fixedly mounted on the right side of the cutter disc (3) and is separated and engaged with the static gear disc (5) through the movement of the piston (6), the large balance wheel (7) is fixedly connected to the right side shaft of the spindle (2), the hydraulic motor (10) is connected to the small balance wheel (8), and the small balance wheel (8) is rotationally connected to the large balance wheel (7).

2. A full-skill CNC lathe turret according to claim 1, characterized in that: The radial outer ring of the right end of the piston (6) contacts the box (1) through a sealing ring, and the radial inner ring of the left end is connected to the spindle (2) through a rolling bearing (19) and can rotate on the spindle (2). The radial inner ring of the right end is axially fixed to the spindle (2) through a washer and a precision nut (18), and the radial outer ring of the left end contacts the inner diameter of the spacer (20) through a sealing ring (14).

3. The turret of a full-skill CNC lathe according to claim 1, characterized in that: The large balance wheel (7) is fixedly connected to the spindle (2) via a tensioning sleeve (11). When the large balance wheel (7) rotates, the spindle (2) rotates together.

4. The full-skill CNC lathe turret according to claim 1, characterized in that: The small balance wheel (8) is mounted on the mounting hole of the bracket (9) via a deep groove ball bearing (12). The hydraulic motor (10) is connected to the small balance wheel (8). The rotation of the hydraulic motor (10) drives the small balance wheel (8) to rotate, and the large balance wheel (7) rotates accordingly.

5. The full-skill CNC lathe turret according to claim 1, characterized in that: The large balance wheel (7) and the small balance wheel (8) are connected via a grooved wheel mechanism.

6. The full-skill CNC lathe turret according to claim 1, characterized in that: The movable toothed disc (4) and the stationary toothed disc (5) constitute a locking device, and the inner cavity of the housing (1), the radial outer circle of the piston (6), and the inlet and outlet oil passages of the housing (1) form a hydraulic cylinder. The piston (6) is driven to move by input and output hydraulic oil, thereby driving the spindle (2) to move left and right, thereby separating and engaging the movable toothed disc (4) and the stationary toothed disc (5).

7. The full-skill CNC lathe turret according to claim 1, characterized in that: The cutter head (3) is an eight-station cutter head, on which a boring tool holder and a tool pressing block are installed.

8. The full-skill CNC lathe turret according to claim 1, characterized in that: The large balance wheel (7) is a groove wheel structure with eight circular arc shapes.

9. The turret of a full-skill CNC lathe according to claim 3, characterized in that: The small balance wheel (8) is an incomplete curved circular wheel, on which two pairs of roller needle bearings with bolts are symmetrically mounted.

10. The full-skill CNC lathe turret according to claim 1, characterized in that: A sensing block (15) is fixedly mounted on the right end of the spindle (2), and a proximity switch (16) is fixedly mounted on a switch frame close to the sensing block (15).

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