A novel servo-powered turret structure capable of automatically exchanging tools and its use method

Abstract

The present invention discloses a novel servo-powered turret structure capable of automatically exchanging tools and a method for using the servo-powered turret. One end of the turret box is coaxially supported and connected to the cutter disc by a bearing. A plurality of tool holder assemblies are circumferentially fixed to the cutter disc. One radial side of the cutter disc is a driving position, and the other radial side of the cutter disc is a tool changing position. A cavity is arranged in the turret box. The tool drive assembly is fixed in the cavity of the turret box, and one end of the tool drive assembly is meshed with the tool holder assembly at the driving position. The tool changing drive assembly is fixed to the upper end surface of the turret box, and one end of the tool changing drive assembly is meshed with the cutter disc. The tool changing drive assembly drives the cutter disc to rotate. The inner ring of the piston toothed disc is coaxially installed on the side of the turret box close to the cutter disc, and the outer ring of the piston toothed disc is meshed with the inner wall of the cutter disc. The piston toothed disc is externally connected to a hydraulic system. The hydraulic system drives the piston toothed disc to move left and right to separate or lock the cutter disc. The tool drive assembly, the tool holder assembly and the tool changing drive assembly are electrically connected to a control assembly respectively.

Description

Technical Field

[0001] The invention belongs to the technical field of machine tool equipment, and in particular relates to a novel servo power turret structure capable of automatically exchanging tools and a use method thereof. Background Art

[0002] At present, the international machine tool market is developing in the direction of high speed, compound, intelligent and environmental protection. As one of the main functional components of horizontal turning centers, the power turret in my country started late, has few manufacturers and a low market share, which restricts the development of horizontal turning centers to a certain extent. In the field of machine tool manufacturing and mechanical processing in the world, compound processing technology is gradually being recognized and applied in practice with its unique charm.

[0003] Horizontal turning centers are currently common equipment in the domestic mechanical processing industry and are widely used. The core component of the hardware part of the horizontal turning center is the turret. Through the processing tools clamped on the turret, the horizontal turning center can cooperate with the CNC system to complete various rotary processing processes, and its utilization rate ranks first among all machining equipment.

[0004] Power turrets and electric spindles are praised as the development direction of CNC machine tools in the 21st century. Power turrets are the core functional components of turning and milling compound turning centers. Only when the horizontal turning center is equipped with a power turret can the intensive processing of workpieces be realized, that is, the turning, milling, drilling, tapping, boring, reaming and other processes of the workpiece can be realized in one clamping. Its advantages are: first, the processing accuracy of complex workpieces is significantly improved, the turnover time and floor space of semi-finished products are reduced, and the process flow of the entire workpiece is shortened; second, unimportant and tedious repetitive work operations are reduced, the labor intensity of operators is reduced, and the working environment is improved accordingly. At the same time, it reduces efficiency and consumption, which is the development direction of green machine tool manufacturing.

[0005] The core components of existing horizontal turning centers are usually hydraulic turrets, servo turrets, and power turrets. The above turrets can only install limited tool holders, generally 12 tool holders (fixed tool holders or power tool holders), and it is impossible to install more tool holders. Because of the limited number of tools, complex parts processing and automated processing cannot be achieved; and each time the tool holder is replaced, the machine tool needs to be shut down and manually replaced, and the worker needs to extend his body into the machine tool to replace it, which increases the labor intensity and danger of the operator, affects the efficiency of the machine tool, and increases the processing time of the parts. Summary of the invention

[0006] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and to provide a novel servo-powered turret structure capable of automatically exchanging tools and a method of using the same.

[0007] In order to solve the technical problem, the technical solution of the present invention is: a new type of servo power turret structure that can automatically exchange tools, including a tool drive component, a tool change drive component, a tool seat component, a piston gear disc, a tool disc, a turret box and a control component, one end of the turret box is connected to the tool disc through a coaxial support bearing, a plurality of tool seat components are fixed circumferentially to the tool disc, one radial side of the tool disc is a driving position, and the other radial side of the tool disc is a tool change position, a cavity is provided in the turret box, the tool drive component is fixed in the cavity of the turret box, and one end of the tool drive component is meshed with the tool seat component at the driving position, and the tool change drive The assembly is fixed to the upper end surface of the turret box, one end of the tool changing drive assembly is engaged with the cutter disc, and the tool changing drive assembly drives the cutter disc to rotate. The inner ring of the piston gear disc is coaxially installed on the side of the turret box close to the cutter disc, and the outer ring of the piston gear disc is engaged with the inner wall of the cutter disc. The piston gear disc is externally connected to a hydraulic system, and the hydraulic system drives the piston gear disc to move left and right to separate or lock the cutter disc. The tool driving assembly, the tool holder assembly and the tool changing drive assembly are electrically connected to the control assembly respectively; when the tool needs to be changed, the hydraulic system drives the piston gear disc to move to the left to separate from the cutter disc, and the tool changing drive assembly drives the tool holder assembly to rotate to the driving position to realize tool changing.

[0008] Preferably, the tool drive assembly includes a milling servo motor, a coupling, a first angular contact ball bearing, a transmission shaft, a motor bevel gear, a second angular contact ball bearing, a milling bevel gear and a third angular contact ball bearing. The milling servo motor is locked in the turret box by screws, the transmission shaft is coaxially connected to the milling servo motor by a coupling, the outer periphery of the transmission shaft is supported on the turret box by assembling the first angular contact ball bearing, the other end of the transmission shaft is key-connected with the motor bevel gear, the motor bevel gear is meshed with the milling bevel gear, the motor bevel gear is axially perpendicular to the milling bevel gear, the outer periphery of the motor bevel gear is supported in the turret box by assembling the second angular contact ball bearing, and the outer periphery of the milling bevel gear is supported on the turret box by assembling the third angular contact ball bearing.

[0009] Preferably, the tool changing drive assembly includes a tool changing motor, a motor gear, a fixed gear disc and a rotating gear disc. The tool changing motor is locked to the upper end surface of the turret box by screws, and the power output end of the tool changing motor is connected to the motor gear by a key. A fixed gear disc is locked with screws at the outer periphery of the turret box near the cutter disc, and a rotating gear disc is locked with screws in the circumference of the cutter disc near one end of the turret box. The outer ring of the rotating gear disc is meshed with the motor gear, and the inner ring of the rotating gear disc is meshed with the fixed gear disc.

[0010] Preferably, there is a cavity between the piston gear disc and the cutter disc, and the hydraulic system pushes the piston gear disc to move left and right through hydraulic oil. When the piston gear disc moves to the left, the outer ring of the piston gear disc is separated from the serrations on the inner wall of the cutter disc. When the piston gear disc moves to the right, the outer ring of the piston gear disc is locked with the serrations on the inner wall of the cutter disc.

[0011] Preferably, the radial lower side of the cutter disc is a driving position, the tool holder assembly of the driving position is key-connected to the milling bevel gear, and the radial upper side of the cutter disc is a tool changing position, the tool holder assembly of the tool changing position cooperates with the ATC tool magazine of the machine tool to change tools.

[0012] Preferably, the tool holder assembly includes a milling drive shaft, a fourth angular contact ball bearing and a milling tool holder drive shaft. The outer periphery of the milling drive shaft is installed in the cutter disc through a bearing. A groove is provided at the bottom of the milling bevel gear, and a first protrusion is provided at the top of the milling drive shaft. The groove and the first protrusion cooperate to connect the milling drive shaft with the milling bevel gear key, and the other end of the milling drive shaft is key-connected to the milling tool holder drive shaft. The outer periphery of the milling tool holder drive shaft is installed in the cutter disc through a fourth angular contact ball bearing, and the other end of the milling tool holder drive shaft is key-connected to the rotary tool holder.

[0013] Preferably, the rotary tool holder is a Z-axis rotary tool or an X-axis rotary tool.

[0014] Preferably, the tool disc is provided with a replaceable tool seat assembly, which includes a first transmission gear, a deep groove ball bearing, a tool seat cover, a tool seat shaft, a fifth angular contact ball bearing, a bearing spacer ring, a second transmission gear, a pull catch, a disc spring, a pull rod, an X-axis rotary tool, a tool handle spindle and a disc spring shaft ring. The tool seat shaft is locked on the tool disc by screws, the tool seat cover is locked on the upper end face of the tool seat shaft by screws, the tool handle spindle is coaxially installed in the tool seat shaft, the outer periphery of the tool handle spindle is sequentially sleeved with a fifth angular contact ball bearing, a bearing spacer ring and a second transmission gear from top to bottom and compressed and locked on the tool handle spindle by a locking nut, and the second transmission gear is key-connected to the tool handle spindle, and the The second transmission gear is meshed with the first transmission gear, and a pull grip is installed inside the tool handle main shaft. The upper end of the pull grip tightens the X-axis rotating tool, and the lower end of the pull grip is connected to the pull rod through a threaded connection. The disc spring is coaxially sleeved on the outside of the pull rod, and the bottom of the disc spring is pressed by the disc spring shaft ring. The disc spring shaft ring and the pull rod are locked by screws and installed in the inner cavity of the tool handle main shaft. The disc spring shaft ring corresponds to the position of the push rod assembly, and the push rod assembly is externally connected to the hydraulic system. The outer periphery of the first transmission gear is installed in the cutter disc through a deep groove ball bearing. A second protrusion is provided at one end of the first transmission gear. When the changeable tool seat assembly is converted to the driving position, the second protrusion cooperates with the groove to connect the first transmission gear with the milling bevel gear key.

[0015] Preferably, the push rod assembly comprises a pull rod piston and a pull rod cylinder, the pull rod piston is installed in the pull rod cylinder, and the pull rod cylinder is locked on the central axis of the inner cavity of the cutter disc by screws.

[0016] Preferably, a method for using a novel servo-powered turret structure capable of automatically exchanging tools as described in any one of the above items,

[0017] Tool holder assembly tool change: The control assembly controls the tool drive assembly to stop running, and then drives the piston gear disc to move to the left through the hydraulic system to separate the piston gear disc from the tool disc. The control assembly controls the tool change drive assembly to drive the tool disc to rotate, and the tool disc rotates to achieve tool change;

[0018] Tool holder assembly and ATC tool magazine tool change: The control assembly controls the tool drive assembly to stop running, and then drives the tool holder assembly at the tool change position to cooperate with the ATC tool magazine to change the tool;

[0019] Milling of tool holder assembly: The control assembly controls the tool drive assembly to drive the tool holder assembly at the drive position to rotate, thereby realizing the milling processing of parts.

[0020] Compared with the prior art, the advantages of the present invention are:

[0021] (1) The present invention provides a novel servo-powered turret structure capable of automatically exchanging tools. The indexing and positioning of the tool disc is controlled by a tool change drive assembly, and the transmission output of the tool holder assembly is controlled by a tool drive assembly. Both the tool change drive assembly and the tool drive assembly are controlled by a servo motor, so that the machine tool control system has a simple configuration and a compact design, shortens the machine tool matching cycle, and greatly reduces the manufacturing and maintenance costs.

[0022] (2) The present invention drives the rotating toothed disc through the motor gear of the tool change drive assembly. The rotating toothed disc is fixed to the cutter disc, and a piston toothed disc is meshed with the inner wall of the cutter disc. There is a cavity between the piston toothed disc and the cutter disc. The hydraulic system drives the piston toothed disc to move left and right through hydraulic oil. When the piston toothed disc moves to the left, the outer ring of the piston toothed disc and the teeth of the inner wall of the cutter disc are separated. At this time, the cutter disc is driven to rotate by the motor gear to achieve tool change. After the tool change is completed, when the piston toothed disc moves to the right, the outer ring of the piston toothed disc and the teeth of the inner wall of the cutter disc are locked. Then, the newly replaced tool is used for machining. The operation is convenient and the turret structure has high stability.

[0023] (3) The tool-changeable tool holder assembly of the present invention can realize automatic tool change with the ATC tool magazine of the machine tool, so that more tool holders can be installed, and complex parts and automated processing can be realized; and there is no need to shut down the machine tool to replace the tool holder, and manual position change is changed to automatic change outside the machine tool, which reduces the labor intensity and danger of the operator, improves the efficiency of machine tool use, and reduces the time for part processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 , a schematic structural diagram of a novel servo-powered turret structure capable of automatically exchanging tools according to the present invention.

[0025] Description of reference numerals:

[0026] 1. Milling servo motor; 2. Coupling; 3. First angular contact ball bearing; 4. Transmission shaft; 5. Motor bevel gear; 6. Second angular contact ball bearing; 7. Milling bevel gear; 8. Third angular contact ball bearing; 9. Milling transmission shaft; 10. Fourth angular contact ball bearing; 11. Milling tool holder transmission shaft; 12. Z-axis rotary tool; 13. Tool changing motor; 14. Motor gear; 15. Fixed gear disc; 16. Rotating gear disc; 17. Piston gear disc; 18. Cutter disc; 19. First transmission gear; 20. Deep groove ball bearing; 21. Cutter seat cover; 22. Cutter seat shaft; 23. Fifth angular contact ball bearing; 24. Bearing spacer ring; 25. Second transmission gear; 26. Pull catch; 27. Disc spring; 28. Pull rod; 29. ​​X-axis rotary tool; 30. Pull rod piston; 31. Pull rod cylinder; 32 Turret box; 33. Cutter handle spindle; 34. Disc spring shaft ring;

[0027] 7-1, groove; 9-1, first protrusion; 19-1, second protrusion. DETAILED DESCRIPTION

[0028] The specific implementation mode of the present invention is described below in conjunction with embodiments:

[0029] It should be noted that the structures, proportions, sizes, etc. shown in this specification are only used to match the contents disclosed in the specification so that people familiar with this technology can understand and read them, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0030] At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0031] Example 1

[0032] like Figure 1As shown, the present invention discloses a novel servo-powered turret structure capable of automatically exchanging tools, comprising a tool drive assembly, a tool change drive assembly, a tool seat assembly, a piston gear disc 17, a tool disc 18, a turret box 32 and a control assembly, wherein one end of the turret box 32 is coaxially supported and connected to the tool disc 18 through a bearing, a plurality of tool seat assemblies are circumferentially fixed to the tool disc 18, one radial side of the tool disc 18 is a driving position, and the other radial side of the tool disc 18 is a tool change position, a cavity is arranged in the turret box 32, the tool drive assembly is fixed in the cavity of the turret box 32, and one end of the tool drive assembly is meshed with the tool seat assembly at the driving position, and the tool change drive assembly is fixed to the turret box On the upper end surface 32, one end of the tool changing drive assembly is engaged with the cutter disc 18, and the tool changing drive assembly drives the cutter disc 18 to rotate. The inner ring of the piston toothed disc 17 is coaxially installed on the side of the turret box 32 close to the cutter disc 18, and the outer ring of the piston toothed disc 17 is engaged with the inner wall of the cutter disc 18. The piston toothed disc 17 is externally connected to a hydraulic system, and the hydraulic system drives the piston toothed disc 17 to move left and right to separate or lock the cutter disc 18. The tool driving assembly, the tool holder assembly and the tool changing drive assembly are electrically connected to the control assembly respectively; when the tool needs to be changed, the hydraulic system drives the piston toothed disc 17 to move left to separate from the cutter disc 18, and the tool changing drive assembly drives the tool holder assembly to rotate to the driving position to realize the tool change.

[0033] Example 2

[0034] like Figure 1 As shown, preferably, the tool drive assembly includes a milling servo motor 1, a coupling 2, a first angular contact ball bearing 3, a transmission shaft 4, a motor bevel gear 5, a second angular contact ball bearing 6, a milling bevel gear 7 and a third angular contact ball bearing 8, the milling servo motor 1 is locked in the turret box 32 by screws, the transmission shaft 4 is coaxially connected with the milling servo motor 1 through the coupling 2, the outer periphery of the transmission shaft 4 is supported on the turret box 32 by assembling the first angular contact ball bearing 3, the other end of the transmission shaft 4 is key-connected with the motor bevel gear 5, the motor bevel gear 5 is meshed with the milling bevel gear 7, the motor bevel gear 5 is axially perpendicular to the milling bevel gear 7, the outer periphery of the motor bevel gear 5 is supported in the turret box 32 by assembling the second angular contact ball bearing 6, and the outer periphery of the milling bevel gear 7 is supported on the turret box 32 by assembling the third angular contact ball bearing 8.

[0035] The setting position of the milling bevel gear 7 corresponds to the cutter disc 18 , that is, the milling bevel gear 7 is set on the turret box 32 inside the cutter disc 18 .

[0036] Example 3

[0037] like Figure 1As shown, preferably, the tool changing drive assembly includes a tool changing motor 13, a motor gear 14, a fixed gear disc 15 and a rotating gear disc 16. The tool changing motor 13 is locked to the upper end surface of the turret box 32 by screws, and the power output end of the tool changing motor 13 is connected to the motor gear 14 by a key. The outer periphery of the turret box 32 is locked with a fixed gear disc 15 by screws near the cutter disc 18, and the cutter disc 18 is circumferentially locked with a rotating gear disc 16 by screws near one end of the turret box 32. The outer ring of the rotating gear disc 16 is meshed with the motor gear 14, and the inner ring of the rotating gear disc 16 is meshed with the fixed gear disc 15.

[0038] The fixed toothed disc 15 facilitates the rotating toothed disc 16 to drive the cutter disc 18 to rotate and perform indexing and positioning.

[0039] Example 4

[0040] like Figure 1 As shown, preferably, there is a cavity between the piston toothed disc 17 and the cutter disc 18, and the hydraulic system pushes the piston toothed disc 17 to move left and right through the hydraulic oil. When the piston toothed disc 17 moves to the left, the outer ring of the piston toothed disc 17 is separated from the serrations of the inner wall of the cutter disc 18. When the piston toothed disc 17 moves to the right, the outer ring of the piston toothed disc 17 is locked with the serrations of the inner wall of the cutter disc 18.

[0041] like Figure 1 As shown, preferably, the radial lower side of the cutter disc 18 is a driving position, the tool holder assembly of the driving position is key-connected to the milling bevel gear 7, and the radial upper side of the cutter disc 18 is a tool changing position, and the tool holder assembly of the tool changing position cooperates with the ATC tool magazine of the machine tool to change tools.

[0042] The position of the driving position is changed according to the position of the milling bevel gear 7, and the position of the tool changing position is changed according to the position of the ATC tool magazine of the machine tool.

[0043] Example 5

[0044] like Figure 1 As shown, preferably, the tool holder assembly includes a milling drive shaft 9, a fourth angular contact ball bearing 10 and a milling tool holder drive shaft 11, the outer periphery of the milling drive shaft 9 is installed in the cutter disc 18 through a bearing, a groove 7-1 is provided at the bottom of the milling bevel gear 7, and a first protrusion 9-1 is provided at the top of the milling drive shaft 9. The groove 7-1 and the first protrusion 9-1 cooperate to make the milling drive shaft 9 key-connected to the milling bevel gear 7, and the other end of the milling drive shaft 9 is key-connected to the milling tool holder drive shaft 11, and the outer periphery of the milling tool holder drive shaft 11 is installed in the cutter disc 18 through a fourth angular contact ball bearing 10, and the other end of the milling tool holder drive shaft 11 is key-connected to the rotary tool holder.

[0045] like Figure 1 As shown, preferably, the rotary tool holder is a Z-axis rotary tool 12 or an X-axis rotary tool 29 .

[0046] The Z-axis rotary cutter 12 is key-connected to the milling cutter seat transmission shaft 11 via two bevel gears.

[0047] Example 6

[0048] like Figure 1 As shown, preferably, the tool disc 18 is provided with a replaceable tool seat assembly, and the replaceable tool seat assembly includes a first transmission gear 19, a deep groove ball bearing 20, a tool seat cover 21, a tool seat shaft 22, a fifth angular contact ball bearing 23, a bearing spacer ring 24, a second transmission gear 25, a pull catch 26, a disc spring 27, a pull rod 28, an X-axis rotary tool 29, a tool handle spindle 33 and a disc spring shaft ring 34, the tool seat shaft 22 is locked on the tool disc 18 by screws, the tool seat cover 21 is locked on the upper end surface of the tool seat shaft 22 by screws, the tool handle spindle 33 is coaxially installed in the tool seat shaft 22, the outer periphery of the tool handle spindle 33 is sequentially sleeved with the fifth angular contact ball bearing 23, the bearing spacer ring 24 and the second transmission gear 25 from top to bottom, and is pressed and locked on the tool handle spindle 33 by a locking nut, and the second transmission gear 25 is key-connected with the tool handle spindle 33. The second transmission gear 25 is meshed with the first transmission gear 19, and a pull grip 26 is installed inside the tool handle spindle 33. The upper end of the pull grip 26 tightens the X-axis rotating tool 29, and the lower end of the pull grip 26 is connected to the pull rod 28 by a thread. The disc spring 27 is coaxially sleeved on the outside of the pull rod 28, and the bottom of the disc spring 27 is pressed by the disc spring shaft ring 34. The disc spring shaft ring 34 and the pull rod 28 are locked by screws and installed in the inner cavity of the tool handle spindle 33. The disc spring shaft ring 34 corresponds to the position of the push rod assembly, and the push rod assembly is externally connected to the hydraulic system. The outer periphery of the first transmission gear 19 is installed in the cutter disc 18 through a deep groove ball bearing 20. A second protrusion 19-1 is provided at one end of the first transmission gear 19. When the changeable tool holder assembly is converted to the driving position, the second protrusion 19-1 cooperates with the groove 7-1 to make the first transmission gear 19 key-connected with the milling bevel gear 7.

[0049] like Figure 1 As shown, preferably, the push rod assembly includes a tie rod piston 30 and a tie rod cylinder 31, the tie rod piston 30 is installed in the tie rod cylinder 31, the tie rod cylinder 31 is locked on the central axis of the inner cavity of the cutter disc 18 by screws, and the tie rod cylinder 31 is externally connected to a hydraulic system.

[0050] like Figure 1 As shown, preferably, after the Z-axis rotary tool 12 rotates, it disengages from the groove 7-1 at the bottom of the milling bevel gear 7, and after the X-axis rotary tool 29 rotates to the driving position, the second protrusion 19-1 of the first transmission gear 19 cooperates with the groove 7-1 at the bottom of the milling bevel gear 7, and the milling servo motor 1 can drive the X-axis rotary tool 29 to rotate.

[0051] Example 7

[0052] like Figure 1As shown, preferably, a method for using a new servo-powered turret structure capable of automatically exchanging tools as described in any of the above items,

[0053] Tool holder assembly tool change: The control assembly controls the tool drive assembly to stop running, and then drives the piston toothed disc 17 to move to the left through the hydraulic system, so that the piston toothed disc 17 is separated from the tool disc 18, and the control assembly controls the tool change drive assembly to drive the tool disc 18 to rotate, and the tool disc 18 is driven to rotate to realize tool change;

[0054] Tool holder assembly and ATC tool magazine tool change: The control assembly controls the tool drive assembly to stop running, and then drives the tool holder assembly at the tool change position to cooperate with the ATC tool magazine to change the tool;

[0055] Milling of tool holder assembly: The control assembly controls the tool drive assembly to drive the tool holder assembly at the drive position to rotate, thereby realizing the milling processing of parts.

[0056] The working principle of the present invention is as follows:

[0057] like Figure 1 As shown, the present invention provides a novel servo-powered turret structure capable of automatically exchanging tools, one end of the turret box 32 is coaxially supported and connected with the cutter disc 18 through a bearing, a plurality of tool holder assemblies are circumferentially fixed to the cutter disc 18, one radial side of the cutter disc 18 is a driving position, and the other radial side of the cutter disc 18 is a tool changing position, a cavity is arranged in the turret box 32, a tool drive assembly is fixed in the cavity of the turret box 32, and one end of the tool drive assembly is meshed with the tool holder assembly at the driving position, the tool changing drive assembly is fixed to the upper end surface of the turret box 32, one end of the tool changing drive assembly is meshed with the cutter disc 18, and the tool changing drive assembly drives the cutter disc 18 to rotate, the inner ring of the piston toothed disc 17 is coaxially installed on the side of the turret box 32 close to the cutter disc 18, the outer ring of the piston toothed disc 17 is meshed with the inner wall of the cutter disc 18, the piston toothed disc 17 is externally connected to a hydraulic system, and the hydraulic system drives the piston toothed disc 17 to move left and right to separate or lock the cutter disc 18, and the working principles are as follows:

[0058] Tool holder assembly tool changing steps:

[0059] When the turret needs to switch tools, the control component of the machine tool issues a tool change command, the turret stops running, the milling servo motor 1 stops rotating, and the hydraulic system controls the piston toothed disc 17 to move to the left to separate the serrations on the inner wall of the piston toothed disc 17 and the cutter disc 18. The control component of the machine tool controls the tool change motor 13 to rotate, driving the motor gear 14 connected to it by a key to rotate, and the rotation of the motor gear 14 drives the rotating toothed disc 16 meshing with it to rotate, and the rotation of the rotating toothed disc 16 drives the cutter disc 18 locked by the screw to rotate, and the rotation of the cutter disc 18 can realize tool change. When the cutter disc 18 turns to the driving position, the tool change motor 13 stops rotating, and the hydraulic system controls the piston toothed disc 17 to move to the right to mesh and lock the serrations on the inner wall of the piston toothed disc 17 and the cutter disc 18, completing the tool change step.

[0060] Tool holder assembly and ATC tool magazine tool changing steps:

[0061] When the turret needs to switch tools, the control component (CNC system) of the machine tool issues a tool change command, the turret stops running and moves to the tool change position, the hydraulic system controls the pull rod piston 30 to move upward, the pull rod piston 30 presses the pull rod 28 and moves upward together, driving the disc spring shaft ring 34 to move upward and compress the disc spring 27, the pull rod 28 moves upward to release the pull grip 26, the machine tool ATC tool magazine starts and grabs the tool to complete the replacement with the tool in the ATC tool magazine, the hydraulic system controls the pull rod piston 30 to move downward again, the disc spring 27 opens and drives the pull rod 28 to move downward, the pull rod 28 moves downward to tighten the pull grip 26 to tighten the tool.

[0062] Z-axis driven tool holder milling steps:

[0063] When the Z-axis rotary tool in the driving position needs to be milled, the control component (CNC system) of the machine tool issues a command, and the milling motor 1 rotates to drive the coupling 2 and the transmission shaft 4 to rotate. The transmission shaft 4 is connected to the motor bevel gear 5 by a key, and drives the motor bevel gear 5 to rotate. The motor bevel gear 5 and the milling bevel gear 7 are meshed together through teeth. The rotation of the motor bevel gear 5 drives the milling bevel gear 7 to rotate. The milling bevel gear 7 is connected to the milling transmission shaft 9 by a key. The milling transmission shaft 9 is connected to the milling tool holder transmission shaft 11 by a key. The milling tool holder transmission shaft 11 is connected to the Z-axis rotary tool 12 by a key. Therefore, when the milling motor 1 rotates, the Z-axis rotary tool 12 is driven to rotate through the transmission of power to realize the processing of parts.

[0064] X-axis driven tool holder milling steps:

[0065] When the X-axis rotary tool 29 needs to be milled, the control component (CNC system) of the machine tool issues a command, and the milling motor 1 rotates to drive the coupling 2 and the transmission shaft 4 to rotate. The transmission shaft 4 is connected to the motor bevel gear 5 by a key, and drives the motor bevel gear 5 to rotate. The motor bevel gear 5 and the milling bevel gear 7 are meshed together through teeth. The rotation of the motor bevel gear 5 drives the milling bevel gear 7 to rotate. The milling bevel gear 7 is connected to the first transmission gear 19 by a key. The first transmission gear 19 and the second transmission gear 25 are meshed together through teeth. The second transmission gear 25 is connected to the tool handle spindle 33 by a key. A pull grip 26 is installed inside the tool handle spindle 33. The pull grip 26 tightens the X-axis rotary tool 29. Therefore, when the milling motor 1 rotates, the X-axis rotary tool 29 is driven to rotate through the transmission of power to realize the processing of parts.

[0066] The present invention provides a novel servo-powered turret structure capable of automatically exchanging tools. The indexing and positioning of the tool disc is controlled by a tool changing drive assembly, and the transmission output of the tool holder assembly is controlled by a tool driving assembly. Both the tool changing drive assembly and the tool driving assembly are controlled by a servo motor, so that the machine tool control system has a simple configuration and a compact design, shortens the machine tool matching cycle, and greatly reduces the manufacturing and maintenance costs.

[0067] The present invention drives the rotating toothed disc through the motor gear of the tool changing drive assembly. The rotating toothed disc is fixed to the cutter disc, and a piston toothed disc is meshed on the inner wall of the cutter disc. There is a cavity between the piston toothed disc and the cutter disc. The hydraulic system pushes the piston toothed disc to move left and right through hydraulic oil. When the piston toothed disc moves to the left, the outer ring of the piston toothed disc and the serrations on the inner wall of the cutter disc are separated. At this time, the cutter disc is driven to rotate by the motor gear to achieve tool changing. After the tool changing is completed, when the piston toothed disc moves to the right, the outer ring of the piston toothed disc and the serrations on the inner wall of the cutter disc are locked, and then machining is performed using the newly replaced tool. The operation is convenient and the turret structure has high stability.

[0068] The tool-changeable tool holder assembly of the present invention can realize automatic tool change with the ATC tool magazine of the machine tool, so that more tool holders can be installed, and complex parts and automated processing can be realized; and there is no need to shut down the machine tool to replace the tool holder, and manual position change is changed to automatic change outside the machine tool, which reduces the labor intensity and danger of the operator, improves the use efficiency of the machine tool, and reduces the part processing time.

[0069] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

[0070] Many other changes and modifications may be made without departing from the concept and scope of the present invention.It should be understood that the present invention is not limited to the specific embodiments, and the scope of the present invention is defined by the appended claims.

Claims

1. A new type of servo-powered turret structure capable of automatically exchanging tools, characterized in that: The invention comprises a tool drive assembly, a tool change drive assembly, a tool seat assembly, a piston gear disc (17), a tool disc (18), a turret box (32) and a control assembly. One end of the turret box (32) is coaxially supported and connected to the tool disc (18) through a bearing. A plurality of tool seat assemblies are circumferentially fixed to the tool disc (18). One radial side of the tool disc (18) is a drive position, and the other radial side of the tool disc (18) is a tool change position. A cavity is arranged in the turret box (32). The tool drive assembly is fixed in the cavity of the turret box (32), and one end of the tool drive assembly is meshed with the tool seat assembly at the drive position. The tool change drive assembly is fixed to the upper end surface of the turret box (32), and one end of the tool change drive assembly is meshed with the tool disc (18). The tool change drive assembly drives the tool disc (18) to rotate. The inner ring of the piston toothed disc (17) is coaxially mounted on a side of the turret box (32) close to the cutter disc (18), the outer ring of the piston toothed disc (17) meshes with the inner wall of the cutter disc (18), the piston toothed disc (17) is externally connected to a hydraulic system, the hydraulic system drives the piston toothed disc (17) to move left and right to separate or lock the cutter disc (18), the tool drive assembly, the tool holder assembly and the tool change drive assembly are respectively electrically connected to the control assembly; when the tool needs to be changed, the hydraulic system drives the piston toothed disc (17) to move leftward to separate from the cutter disc (18), and the tool change drive assembly drives the tool holder assembly to rotate to the drive position to realize the tool change; the tool drive assembly comprises a milling servo motor (1), a coupling (2), a first angular contact ball bearing (3), a transmission shaft (4), a motor A bevel gear (5), a second angular contact ball bearing (6), a milling bevel gear (7) and a third angular contact ball bearing (8); the milling servo motor (1) is locked in a turret box (32) by screws; the transmission shaft (4) is coaxially connected to the milling servo motor (1) by a coupling (2); the outer periphery of the transmission shaft (4) is supported on the turret box (32) by assembling a first angular contact ball bearing (3); the other end of the transmission shaft (4) is key-connected with the motor bevel gear (5); the motor bevel gear (5) and the milling bevel gear (7) are meshed with each other; the motor bevel gear (5) and the milling bevel gear (7) are axially perpendicular; the outer periphery of the motor bevel gear (5) is supported in the turret box (32) by assembling a second angular contact ball bearing (6); the outer periphery of the milling bevel gear (7) is supported by a second angular contact ball bearing (6) The third angular contact ball bearing (8) is supported on the turret box (32); the tool changing drive assembly comprises a tool changing motor (13), a motor gear (14), a fixed toothed disc (15) and a rotating toothed disc (16); the tool changing motor (13) is screwed to the upper end surface of the turret box (32); the power output end of the tool changing motor (13) is connected to the motor gear (14) by a key; the outer periphery of the turret box (32) is screwed with a fixed toothed disc (15) near the cutter disc (18); the cutter disc (18) is screwed with a rotating toothed disc (16) near one end of the turret box (32); the outer ring of the rotating toothed disc (16) is meshed with the motor gear (14); and the inner ring of the rotating toothed disc (16) is meshed with the fixed toothed disc (15);There is a cavity between the piston toothed disc (17) and the cutter disc (18), and the hydraulic system pushes the piston toothed disc (17) to move left and right through hydraulic oil. When the piston toothed disc (17) moves to the left, the outer ring of the piston toothed disc (17) and the inner wall serrations of the cutter disc (18) are separated. When the piston toothed disc (17) moves to the right, the outer ring of the piston toothed disc (17) and the inner wall serrations of the cutter disc (18) are locked. The cutter seat assembly comprises a milling drive shaft (9), a fourth angular contact ball bearing (10) and a milling cutter seat drive shaft (11). The outer periphery of the milling drive shaft (9) is mounted by a bearing. In the cutter disc (18), a groove (7-1) is provided at the bottom of the milling bevel gear (7), and a first protrusion (9-1) is provided at the top of the milling drive shaft (9); the groove (7-1) and the first protrusion (9-1) cooperate to enable the milling drive shaft (9) to be key-connected to the milling bevel gear (7); the other end of the milling drive shaft (9) is key-connected to a milling cutter seat drive shaft (11); the outer periphery of the milling cutter seat drive shaft (11) is mounted in the cutter disc (18) via a fourth angular contact ball bearing (10); and the other end of the milling cutter seat drive shaft (11) is key-connected to a rotary cutter seat;The cutter disc (18) is provided with a replaceable cutter seat assembly, which comprises a first transmission gear (19), a deep groove ball bearing (20), a cutter seat cover (21), a cutter seat shaft (22), a fifth angular contact ball bearing (23), a bearing spacer ring (24), a second transmission gear (25), a pull catch (26), a disc spring (27), a pull rod (28), an X-axis rotary cutter (29), a tool handle spindle (33) and a disc spring shaft ring (34). The cutter seat shaft (22) is locked on the cutter disc (18) by screws, and the cutter seat cover (21 ) is locked on the upper end surface of the tool holder shaft (22) by screws, the tool holder spindle (33) is coaxially installed in the tool holder shaft (22), the outer periphery of the tool holder spindle (33) is sequentially sleeved with a fifth angular contact ball bearing (23), a bearing spacer ring (24) and a second transmission gear (25) from top to bottom and is compressed and locked on the tool holder spindle (33) by a locking nut, and the second transmission gear (25) is key-connected with the tool holder spindle (33), the second transmission gear (25) is meshed with the first transmission gear (19), and a pulley is installed inside the tool holder spindle (33). The upper end of the pull grip (26) tightens the X-axis rotary tool (29), the lower end of the pull grip (26) is connected to the pull rod (28) by a thread, the disc spring (27) is coaxially sleeved on the outside of the pull rod (28), the bottom of the disc spring (27) is pressed by a disc spring shaft ring (34), the disc spring shaft ring (34) and the pull rod (28) are locked by screws and installed in the inner cavity of the tool handle spindle (33), the disc spring shaft ring (34) corresponds to the position of the push rod assembly, the push rod assembly is externally connected to the hydraulic system, the outer periphery of the first transmission gear (19) is connected by a deep groove ball shaft The bearing (20) is mounted in the cutter disc (18); a second protrusion (19-1) is provided at one end of the first transmission gear (19); when the replaceable cutter seat assembly is switched to the driving position, the second protrusion (19-1) cooperates with the groove (7-1) to enable the first transmission gear (19) to be key-connected with the milling bevel gear (7); the push rod assembly comprises a pull rod piston (30) and a pull rod cylinder (31); the pull rod piston (30) is mounted in the pull rod cylinder (31); the pull rod cylinder (31) is screwed to the central axis of the inner cavity of the cutter disc (18); 2. According to claim 1, a new type of servo-powered turret structure capable of automatically exchanging tools is characterized in that: The radial lower side of the cutter disc (18) is a driving position, and the tool holder assembly of the driving position is key-connected to the milling bevel gear (7). The radial upper side of the cutter disc (18) is a tool changing position, and the tool holder assembly of the tool changing position cooperates with the ATC tool magazine of the machine tool to change tools.

3. According to claim 1, a new type of servo-powered turret structure capable of automatically exchanging tools is characterized in that: The rotary tool holder is a Z-axis rotary tool (12) or an X-axis rotary tool (29).

4. A method for using the new servo-powered turret structure capable of automatically exchanging tools as claimed in any one of claims 1 to 3, characterized in that: Tool holder assembly tool change: the control assembly controls the tool drive assembly to stop running, and then drives the piston toothed disc (17) to move to the left through the hydraulic system, so that the piston toothed disc (17) and the tool disc (18) are separated, and the control assembly controls the tool change drive assembly to drive the tool disc (18) to rotate, and the tool disc (18) is driven to rotate to achieve tool change; Tool holder assembly and ATC tool magazine tool change: The control assembly controls the tool drive assembly to stop running, and then drives the tool holder assembly at the tool change position to cooperate with the ATC tool magazine to change the tool; Milling of tool holder assembly: The control assembly controls the tool drive assembly to drive the tool holder assembly at the drive position to rotate, thereby realizing the milling processing of parts.

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