Large-torque rotary power head

Abstract

The utility model discloses a large-torque rotary power head which comprises a base, a rotary shaft, a rotary disc and a station seat, the station seat, the rotary disc and the rotary shaft are sequentially fixed, a plurality of tool chucks are rotatably arranged on the station seat along the peripheral wall, and a synchronous driving mechanism used for driving the tool chucks to rotate synchronously is further arranged on the station seat. A translation sliding table is arranged in the base in a sliding mode through a sliding assembly, the rotating shaft is rotatably arranged in the translation sliding table through a bearing, and the rotating shaft is further sleeved with a worm wheel. Two worms parallel to the sliding direction of the translation sliding table are rotatably arranged in the base in a penetrating mode, the two worms are horizontally distributed on the two sides of the worm gear and meshed with the worm gear, and the two worms are each connected with a rotary motor. According to the structure, the dual functions of station rotation switching and position translation adjustment can be achieved by sharing one worm and gear driving structure, the structure is small and exquisite, the use convenience of the power head is improved, and the applicability is good.

Description

Technical Field

[0001] This utility model relates to the field of CNC power head technology, and in particular to a high-torque rotary power head. Background Technology

[0002] Power head technology is one of the core technologies in mill-turning composite machine tools. Mill-turning composite machine tools can perform complex parts processing on the same machine tool, completing all processing such as turning, drilling, tapping, side grooving, side milling, angle drilling, and curve milling on a single mill-turning composite CNC machine tool.

[0003] Multi-station CNC rotary power heads are commonly used machine tool accessories. They feature multiple rotatable tool holders on a turntable, each holding various tools. The turntable can be rotated and positioned as needed, allowing for tool rotation switching between different workstations. Power is then transmitted to the tool mounting positions, driving the rotating tools to perform milling, drilling, tapping, and other operations. However, existing rotary power heads generally only allow for workstation rotation switching and cannot adjust translational position. Adjusting the translational position of the entire power head requires additional displacement adjustment structures such as sliding tables after installation on the machine tool, resulting in a complex structure and large space requirement. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the above-mentioned problems and provide a high-torque rotary power head, which realizes the dual functions of workstation rotation switching and workstation seat position translation adjustment through a set of worm gear structure. It can be flexibly adjusted according to the usage requirements, has a wider range of applications and a compact structure.

[0005] The technical solution of this utility model is:

[0006] The high-torque rotary power head of this utility model includes a base, a rotary shaft, a turntable, and a workstation. The workstation, turntable, and rotary shaft are fixed in sequence. The workstation is rotatably provided with multiple tool chucks along its outer peripheral wall, and the workstation is also provided with a synchronous drive mechanism for driving the tool chucks to rotate synchronously. The feature is that: a translation slide is slidably provided in the base through a sliding assembly; the rotary shaft is rotatably provided in the translation slide through a bearing, and a worm gear is also fitted on the rotary shaft; two worms are rotatably provided in the base, parallel to the sliding direction of the translation slide, and the two worms are horizontally distributed on both sides of the worm gear and both mesh with the worm gear; each of the two worms is connected to a rotary motor.

[0007] In the above structure, this utility model forms two motion modes under the drive of two rotary motors. One mode is to achieve the worm wheel not rotating and move synchronously with the translation slide within the base by rotating the two worms in the same direction, thereby adjusting the position of the entire workstation. The other mode is to drive the worm wheel to rotate by rotating the two worms in opposite directions. At this time, the translation slide remains stationary, and the rotation of the worm wheel drives the rotary shaft, turntable, and workstation to rotate, thereby realizing the rotary switching of multiple workstations.

[0008] Furthermore, in the high-torque rotary power head of this utility model, the sliding assembly includes at least two sets of slide rails and sliders respectively arranged on the base and the sliding slide table. The sliding structure is simple and easy to implement.

[0009] Furthermore, in the high-torque rotary power head of this utility model, the base includes a detachably connected upper base and a lower base, and the translation slide is located above the lower base with the sliding component disposed between the two, which facilitates installation.

[0010] Furthermore, in the high-torque rotary power head described in this utility model, two rotary motors are placed on opposite sides of the base. The arrangement of the motors on different sides ensures that the overall structure is subjected to balanced forces and avoids lateral tilting and instability.

[0011] Furthermore, in the high-torque rotary power head described in this utility model, a chassis is also fitted at the lower end of the rotary shaft. The chassis is stepped, with a smaller top and a larger bottom, and is fixedly connected to the rotary shaft by bolts, thereby increasing the bottom support force of the rotary shaft and improving structural stability.

[0012] Furthermore, in the high-torque rotary power head of this utility model, one end of the worm gear is supported and installed in the base by a flange bearing, and the other end is installed in the base by a needle roller bearing and connected to the rotary motor by a coupling.

[0013] Furthermore, in the high-torque rotary power head of this utility model, the synchronous drive mechanism includes a drive shaft passing through the workstation seat and a first bevel gear sleeved on the drive shaft. Each tool holder has a second bevel gear sleeved on its inner end within the workstation seat, and the first bevel gear meshes with each of the second bevel gears simultaneously.

[0014] Furthermore, in the high-torque rotary power head described in this utility model, a water inlet ring is also fitted around the workstation base. The water inlet ring and the workstation base enclose a cooling water chamber. The water inlet ring is provided with an inlet connector and an outlet connector that communicate with the cooling water chamber. The design of the water inlet ring increases the cooling effect on the drive shaft, avoids overheating damage, and extends the overall service life.

[0015] The beneficial effects of this utility model are:

[0016] This utility model has a compact structure. By sharing a set of worm gear drive structures, it can achieve both station rotation switching and station position translation adjustment. By changing the drive mode of the two rotary motors, the rotation of the two screws can be controlled in the same or opposite directions, thus forming two motion modes: rotation and translation. The station can be flexibly adjusted according to the usage requirements, improving the ease of use of the power head structure, expanding its application range, and making the structure small and compact.

[0017] The overall structure of this utility model is balanced and stable. It adopts a layout structure in which two worm gears are placed on both sides of the worm wheel and two rotary motors are placed on opposite sides of the base. This ensures that the force on both sides is balanced and effectively avoids tilting due to excessive weight on one side. Attached Figure Description

[0018] Figure 1 This is a vertical sectional view of the present invention.

[0019] Figure 2 This is a schematic diagram of the transverse cross-sectional structure of this utility model. Detailed Implementation

[0020] The present invention will now be further described with reference to the accompanying drawings:

[0021] Reference Figure 1 and Figure 2 As shown, the high-torque rotary power head described in this embodiment includes a base 1, a rotary shaft 2, a turntable 3, and a workstation 4. The workstation 4, turntable 3, and rotary shaft 2 are fixed in sequence. The workstation 4 is rotatably provided with multiple tool chucks 5 along its outer peripheral wall, and the workstation 4 is also provided with a synchronous drive mechanism for driving each tool chuck 5 to rotate synchronously. The synchronous drive mechanism includes a drive shaft 6 passing through the workstation 4 and a first bevel gear 7 sleeved on the drive shaft 6. Each tool chuck 5 has a second bevel gear 8 sleeved on its inner end within the workstation 4, and the first bevel gear 7 meshes with each of the second bevel gears 8 simultaneously.

[0022] A translation slide 10 is slidably disposed within the base 1 via a sliding assembly 9. The base 1 includes an upper base 1a and a lower base 1b that are detachably connected. The translation slide 10 is located above the lower base 1b, and the sliding assembly 9 is disposed between the two. In this embodiment, the sliding assembly 9 includes at least two sets of slide rails and sliders respectively disposed on the base 1 and the translation slide 10.

[0023] The rotary shaft 2 is rotatably mounted within the translation slide 10 via bearing 11. A base 12 is fitted onto the lower end of the rotary shaft 2. The base 12 is stepped, wider at the bottom than the top, and is bolted to the rotary shaft 2. A worm gear 13 is mounted on the rotary shaft 2. Two worms 14, parallel to the sliding direction of the translation slide 10, are rotatably mounted within the base 1. The two worms 14 are horizontally distributed on both sides of the worm gear 13 and mesh with it. Each worm 14 is connected to a rotary motor. One end of each worm 14 is supported and mounted within the base 1 via flange bearing 15, and the other end is mounted within the base 1 via needle roller bearing 16 and connected to the rotary motor via coupling 17. In this embodiment, the rotary motor is not shown; only the motor base structure is illustrated. Figure 2 The two rotary motors are placed on opposite sides of the base 1 to ensure the stability of the overall structure and to ensure that the forces on both sides are balanced.

[0024] This embodiment achieves two functions—station rotation switching and station base 4 translational position adjustment—by controlling two rotary motors with different drive modes. When the two rotary motors control the two worm gears 14 to rotate in the same direction, the worm wheel 13 does not rotate and slides synchronously along the slide rail with the translation slide table 10. At this time, the entire station base 4 also slides synchronously to adjust its position. When the two rotary motors control the two worm gears 14 to rotate in opposite directions, the worm wheel 13 rotates while the translation slide table 10 remains stationary, and the station base 4 achieves station rotation switching. After the station rotation and translational positions are both adjusted to the correct positions, the drive shaft 6 inside the station base 4 drives the first bevel gear 7 to rotate. The first bevel gear 7 and the second bevel gear 8 cooperate to drive the various tool chucks 5 to rotate synchronously, realizing the machining operation.

[0025] To extend the service life of the entire power head structure, a water inlet ring 18 is fitted around the workstation 4. The water inlet ring 18 and the workstation 4 form an annular cooling water cavity 19. The water inlet ring 18 is provided with an inlet connector and an outlet connector that connect to the cooling water cavity 19. During processing, cooling water can be introduced into the cooling water cavity 19 to achieve circumferential cooling of the drive shaft 6 and improve the heat exchange effect.

[0026] The specific embodiments described herein are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model are still covered by the claims of this utility model.

Claims

1. A high-torque rotary power head, comprising a base, a rotary shaft, a turntable, and a workstation, wherein the workstation, turntable, and rotary shaft are fixed in sequence, and the workstation is rotatably provided with multiple tool holders along its outer peripheral wall, and the workstation is also provided with a synchronous drive mechanism for driving the tool holders to rotate synchronously, characterized in that: A translation slide is slidably mounted inside the base via a sliding assembly. The rotary shaft is rotatably mounted inside the translation slide via bearings, and a worm gear is also fitted on the rotary shaft. Two worms are rotatably mounted inside the base, parallel to the sliding direction of the translation slide. The two worms are horizontally distributed on both sides of the worm gear and are both meshed with the worm gear. Each of the two worms is connected to a rotary motor.

2. The high-torque rotary power head according to claim 1, characterized in that: The sliding assembly includes at least two sets of slide rails and sliders respectively disposed on the base and the translation slide.

3. The high-torque rotary power head according to claim 1, characterized in that: The base includes a detachably connected upper base and a lower base, with the translation slide located above the lower base and the sliding assembly disposed between the two.

4. The high-torque rotary power head according to claim 1, characterized in that: Two rotary motors are placed on opposite sides of the base.

5. The high-torque rotary power head according to claim 1, characterized in that: A base plate is also fitted at the lower end of the rotary shaft. The base plate is stepped, with a smaller top and a larger bottom, and is fixedly connected to the rotary shaft by bolts.

6. The high-torque rotary power head according to claim 1, characterized in that: One end of the worm gear is supported and installed in the base by a flange bearing, and the other end is installed in the base by a needle roller bearing and connected to a rotary motor by a coupling.

7. The high-torque rotary power head according to claim 1, characterized in that: The synchronous drive mechanism includes a drive shaft passing through the workstation and a first bevel gear sleeved on the drive shaft. Each tool holder has a second bevel gear sleeved on its inner end within the workstation, and the first bevel gear meshes with each of the second bevel gears simultaneously.

8. The high-torque rotary power head according to claim 1, characterized in that: A water inlet ring is also fitted around the workstation base, and the water inlet ring and the workstation base enclose a cooling water cavity. The water inlet ring is provided with an inlet connector and an outlet connector that communicate with the cooling water cavity.

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