Power transmission mechanism for power turret and machining equipment

Abstract

The utility model relates to a power transmission mechanism for power tool turret and machining equipment, wherein the power transmission mechanism for power tool turret comprises a center motor and a tool turret disc, a plurality of work station holes are arranged on the tool turret disc, and a tool seat is installed on the work station hole. A protruding block is arranged on the transmission shaft of the tool seat, a recessed groove penetrating through the output shaft and matched with the protruding block is arranged on the output shaft of the center motor; a positioning ring is arranged outside the center motor, one end surface of the positioning ring is a positioning surface, the positioning ring is provided with a positioning groove for accommodating the output shaft, one surface of the protruding block is in sliding contact with the positioning ring, and the side surface of the recessed groove is flush with the positioning surface when butt jointing the protruding block. The motor is provided with an encoder and is signal connected with a control system. The center motor directly drives the tool seat, high-speed machining can be realized. The protruding block and the output shaft are matched through lateral insertion, and the positioning surface of the positioning ring constitutes high-precision matching, thereby solving the technical problems of complex driving structure and slow response speed.

Description

Technical Field

[0001] This utility model relates to the field of mechanical processing equipment technology, and in particular to a power transmission mechanism and processing equipment for a power turret. Background Technology

[0002] A rotary turret is a general term for automatic tool changers and tool drive devices in CNC machine tools. Powered turrets are commonly used in mill-turn machining centers and are one of the core components of these centers. Multiple tools can be mounted on the turret along the circumference of the tool head. The tools are controlled by a program to perform tool changing, feed, retraction, and rotary cutting operations. In existing technologies, the powered turret transmits power from the central motor to the tools through gears and other transmission mechanisms. This method suffers from drawbacks such as complex structure, high cost, large space occupation, and slow response speed. Utility Model Content

[0003] To overcome the problems existing in related technologies, this utility model provides a power transmission mechanism for a power turret, which solves the technical problem of complex transmission structures in the prior art through a simple transmission structure.

[0004] This utility model provides a power transmission mechanism for a power turret, including a central motor and a turret plate. The turret plate is provided with multiple workstation holes, and tool holders are installed in the workstation holes. A protrusion is provided on the transmission shaft of the tool holder, and a groove through the output shaft that cooperates with the protrusion is provided on the output shaft of the central motor.

[0005] A positioning ring is provided outside the central motor. One end face of the positioning ring is a positioning surface. The positioning ring is provided with a positioning groove for accommodating the output shaft. One side of the protrusion slides in contact with the positioning ring. The side of the groove is flush with the positioning surface when it mates with the protrusion.

[0006] The motor is equipped with an encoder and is connected to a control system via signal transmission.

[0007] The above technical solution simplifies the complex transmission structure in the prior art to a groove on the output shaft of the central motor that engages with a protrusion on the drive shaft of the tool holder. By using a control system and encoder to precisely control the stop position of the output shaft of the central motor, the side of the groove is flush with the positioning surface each time the central motor stops moving. This facilitates the smooth exit of the protrusion from the groove when the turret rotates, and the smooth sliding of the protrusions on the drive shafts of other tool holders into the groove. This reduces the production cost of the equipment and improves production efficiency.

[0008] In one embodiment, a liquid cooling system for dissipating heat from the central motor is provided outside the central motor. The liquid cooling system includes a spiral cooling groove wound around the outer shell of the central motor. The outer shell of the central motor is also covered by a cooling shell. The cooling shell has a coolant inlet and a coolant outlet at the two ends corresponding to the cooling groove. During operation, the coolant enters the spiral cooling groove through the coolant inlet, flows along the cooling groove through the motor shell, and finally flows out of the cooling groove through the coolant outlet, thereby removing the heat generated by the motor during operation and improving the reliability of the central motor.

[0009] In one embodiment, guide surfaces are provided at both ends of the two sides of the groove. By providing guide surfaces, the difficulty of the protrusion entering the groove can be reduced, the reliability of the equipment can be improved, and the failure rate can be reduced.

[0010] In one embodiment, the sides of the groove and both sides of the protrusion are provided with a wear-resistant coating. By providing a wear-resistant coating, the service life of the output shaft and the transmission shaft can be extended, the processing accuracy of the equipment can be improved, and the cost can be further reduced.

[0011] In one embodiment, the control system is a PLC or a computer. The PLC or computer can precisely control the start and stop positions of the output shaft of the central motor, reducing the difficulty of fitting the protrusions and grooves and improving the overall machining accuracy of the equipment.

[0012] In one embodiment, both the end face of the protrusion and the bottom face of the groove are arc-shaped, which reduces the distance between the end face and the bottom face and reduces the size of the transmission mechanism.

[0013] This utility model also provides a machining equipment that utilizes the aforementioned power transmission mechanism for a power turret.

[0014] The technical solutions provided by the embodiments of this utility model may include the following beneficial effects:

[0015] The simple transmission structure using bumps and grooves replaces the complex transmission structure of existing technologies, reducing equipment costs. At the same time, it utilizes direct motor drive, which features high torque, high speed, and fast response.

[0016] By using direct motor drive, the existing technology utilizes a structure driven by motors and gears. The motor is placed directly inside the turret, reducing the overall size of the turret and thus optimizing the overall size of the equipment.

[0017] Through the structure of the positioning ring, positioning surface, and guide surface, a stable tool change can be achieved during tool changing, and misalignment is not easily caused. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.

[0019] Figure 1 This is a three-dimensional schematic diagram of a power transmission mechanism for a power turret according to the present invention;

[0020] Figure 2 This is a schematic diagram of the combined state of the central motor and the tool holder described in this utility model;

[0021] Figure 3 This is a schematic diagram of the cooperation between the output shaft and the transmission shaft described in this utility model;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the central motor in this utility model.

[0023] In the figure, there are: turret plate 100, work station hole 110, tool holder 200, drive shaft 210, protrusion 211, center motor 300, output shaft 310, groove 311, guide surface 312, cooling shell 320, coolant inlet 321, coolant outlet 322, outer shell 330, cooling tank 340, positioning ring 400, positioning groove 410, positioning surface 420, and wear-resistant coating 500. Detailed Implementation

[0024] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0025] like Figures 1 to 3As shown, a power transmission mechanism for a power turret includes a central motor 300 and a turret plate 100. The turret plate 100 has multiple workstation holes 110 for mounting tool holders 200. A protrusion 211 is provided on the drive shaft 210 of the tool holder 200. A groove 311, which mates with the protrusion 211, is provided on the output shaft 310 of the central motor 300. A positioning ring 400 is provided outside the central motor 300. One end face of the positioning ring 400 is a positioning surface 420, and a positioning groove 410 for accommodating the output shaft 310 is provided on the positioning surface 420. The side of the groove 311 is flush with the positioning surface 420. One side of the protrusion 211 contacts the positioning ring 400, while the end face of the protrusion 211 does not contact the side of the groove 311. An encoder is installed on the output shaft 310 of the motor and is connected to a control system. It is worth noting that the control system can be a PLC or a computer. The technology of controlling the start and stop position of the motor output shaft 310 by a PLC or computer is existing technology in this field and will not be described in detail here.

[0026] When the transmission mechanism is running, the output shaft 310 transmits the power output by the central motor 300 to the cutting tool through the cooperation of the protrusion 211 and the groove 311 on the transmission shaft 210, thereby performing cutting processing on the parts. When the motor needs to be replaced, the control system and encoder precisely control the stop position of the output shaft 310 of the central motor 300, so that the side of the groove 311 is flush with the positioning surface 420 of the positioning ring 400. The rotation of the turret disk 100 drives the protrusion 211 on the transmission shaft 210 to slide out of the groove 311, and the protrusion 211 on the transmission shaft 210 of another tool holder 200 slides into the groove 311 to complete the tool change. The central motor 300 continues to rotate to drive the replaced tool to process the parts. Through the simple cooperation of the groove 311 and the protrusion 211, the complex transmission structure in the prior art is replaced, reducing the cost of the equipment.

[0027] In order to reduce the difficulty of the protrusion 211 entering the groove 311, improve the reliability of the equipment, and reduce the failure rate, in one embodiment, guide surfaces 312 are provided at both ends of the two sides of the groove 311.

[0028] In order to extend the service life of the output shaft 310 and the drive shaft 210, improve the machining accuracy of the equipment, and further reduce costs, wear-resistant coating 500 is provided on the side of the groove 311 and the two sides of the protrusion 211.

[0029] To improve the reliability of the central motor 300, a liquid cooling system is provided outside the central motor 300 for heat dissipation. The liquid cooling system includes a spiral cooling groove 340 wound around the outer casing 330 of the central motor 300. The outer casing 330 of the central motor 300 is further covered by a cooling shell 320, with a coolant inlet 321 and a coolant outlet 322 corresponding to the two ends of the cooling groove 340. During operation, coolant enters the spiral cooling groove 340 through the coolant inlet 321, flows along the cooling groove 340 past the outer edge of the motor casing 330, and finally flows out of the cooling groove 340 through the coolant outlet 322, thereby carrying away the heat generated by the central motor 300 during operation.

[0030] In order to reduce the distance between the end face of the protrusion 211 and the bottom face of the groove 311 and reduce the size of the transmission mechanism, both the end face of the protrusion 211 and the bottom face of the groove 311 are arc-shaped.

[0031] This utility model further provides a machining equipment that utilizes the aforementioned power transmission mechanism for a power turret.

[0032] It should be understood that this invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this invention is limited only by the appended claims.

Claims

1. A power transmission mechanism for a power turret, comprising a central motor (300) and a turret plate (100), wherein the turret plate (100) is provided with a plurality of workstation holes (110), and the workstation holes (110) are used to mount tool holders (200), characterized in that, The drive shaft (210) of the tool holder (200) is provided with a protrusion (211), and the output shaft (310) of the central motor (300) is provided with a groove (311) that cooperates with the protrusion (211) and passes through the output shaft (310). A positioning ring (400) is provided outside the central motor (300). One end face of the positioning ring (400) is a positioning surface (420). The positioning ring (400) is provided with a positioning groove (410) for accommodating the output shaft (310). One side of the protrusion (211) is in sliding contact with the positioning ring (400). The side of the groove (311) is flush with the positioning surface (420) when it mates with the protrusion (211). The motor is equipped with an encoder and is connected to a control system via signal transmission.

2. The power transmission mechanism for a power turret according to claim 1, characterized in that, The central motor (300) is provided with a liquid cooling system for dissipating heat. The liquid cooling system includes a spiral cooling groove (340) wound around the outer shell (330) of the central motor (300). The outer shell (330) of the central motor (300) is also covered with a cooling shell (320). The cooling shell (320) is provided with a coolant inlet (321) and a coolant outlet (322) at the beginning and end of the cooling groove (340), respectively.

3. The power transmission mechanism for a power turret according to claim 2, characterized in that, Guide surfaces (312) are provided at both ends of the two sides of the groove (311).

4. The power transmission mechanism for a power turret according to claim 1, characterized in that, The sides of the groove (311) and the two sides of the protrusion (211) are provided with a wear-resistant coating (500).

5. The power transmission mechanism for a power turret according to claim 1, characterized in that, The control system is a PLC or a computer.

6. A power transmission mechanism for a power turret according to any one of claims 1-5, characterized in that, The end face of the protrusion (211) and the bottom face of the groove (311) are both arc-shaped.

7. A machining equipment, characterized in that, The machining equipment includes the power transmission mechanism for the power turret as described in claim 6.

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