Angle-variable cutter handle mechanism for four-axis machine tool

Abstract

The utility model relates to the technical field of numerical control machining, in particular to an angle-variable cutter handle mechanism for a four-axis machine tool, which comprises a side seat, a power shaft is rotatably connected to one side of the outer wall of the side seat, a transmission shaft is arranged at the upper end of the outer wall of the power shaft, and an output shaft is arranged at the bottom end of the outer wall of the power shaft and below the transmission shaft. The transmission shaft and the output shaft are connected with the power shaft through a connecting part, and an adjusting part for adjusting the angle of the output shaft is arranged on the inner wall of the side seat. And the whole arranged adjusting part is composed of a pure mechanical structure, the resistance to impact force generated during machining of the machining tool is better, structural damage caused by the impact force is not likely to happen, and the service life of the device is longer.

Description

Technical Field

[0001] This utility model relates to the field of CNC machining technology, specifically to a variable angle tool holder mechanism for a four-axis machine tool. Background Technology

[0002] With social development, CNC machine tools have become an emerging type of processing equipment. CNC machining technology, as the foundation of modern mechanical manufacturing technology, has brought about significant changes in the mechanical manufacturing process. Compared with traditional machining technologies, modern CNC machining technology features multi-axis linkage capabilities. Multi-axis generally refers to a machine tool having four or more motion axes, thereby enabling more complex surface cutting operations on parts.

[0003] In existing four-axis machine tools, the method of adjusting the tool holder angle mostly relies on the extension and retraction of cylinders. The tool holder is set to a rotatable state, and then the cylinder is installed in a suitable position. Then, by controlling the extension and retraction of the cylinder, the tool holder is pushed or pulled to rotate, thereby adjusting the tool. However, this method causes the impact force of the tool to be transmitted to the cylinder during machining. As a precision component, the cylinder is easily damaged by prolonged impact, which can lead to the tool holder jamming and the tool becoming unusable. Therefore, this method has its shortcomings in use.

[0004] In conclusion, it is necessary to invent a variable-angle tool holder mechanism for four-axis machine tools. Utility Model Content

[0005] Therefore, this utility model provides a variable angle tool holder mechanism for a four-axis machine tool to solve the problem that this method will cause the tool to transmit the impact force to the cylinder during the machining process. As a precision component, the cylinder is easily damaged by the impact force for a long time, which will cause the tool holder to jam.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a variable angle tool holder mechanism for a four-axis machine tool, comprising a side seat, a power shaft rotatably connected to one side of the outer wall of the side seat, a transmission shaft provided at the upper end of the outer wall of the power shaft, and an output shaft provided at the bottom end of the outer wall of the power shaft and below the transmission shaft, the transmission shaft and the output shaft being connected to the power shaft via a connecting component, and an adjustment component for adjusting the angle of the output shaft being provided on the inner wall of the side seat.

[0007] Preferably, side bevel gears are fixed on both sides of the outer wall of the power shaft, and the top of the right side bevel gear meshes with an upper bevel gear, and the bottom of the transmission shaft is fixedly connected to the top of the outer wall of the upper bevel gear.

[0008] Preferably, the bottom end of the outer wall of the left-side side bevel gear meshes with a bottom bevel gear, the upper end of the output shaft is fixedly connected to the bottom end of the outer wall of the bottom bevel gear, and a machining tool is connected to the bottom end of the outer wall of the output shaft.

[0009] Preferably, the connecting component includes bearing housings, and the number of bearing housings is three. Two of the bearing housings are installed on the outer wall of the power shaft and located to the left of the left-end side bevel gear, and one bearing housing is installed on the outer wall of the power shaft and located to the right of the right-end side bevel gear.

[0010] Preferably, a first fixed shaft seat is installed on the outer wall of the transmission shaft. The two ends of the first fixed shaft seat are fixedly connected to bearing seats at the first position on the left and the right position via connecting shaft arms. A second fixed shaft seat is installed on the outer wall side of the output shaft. The left end of the second fixed shaft seat is fixed to the bearing seat at the second position on the left via connecting shaft arms. The right end of the second fixed shaft seat is connected to the adjusting component via connecting shaft arms.

[0011] Preferably, the adjusting component includes a bushing, which is rotatably connected to the inner wall of the side seat. The side end of the power shaft is rotatably connected to the inner wall of the side seat. The outer wall of the side seat is rotatably connected to the inner wall of the bushing. A roller is connected to the outer wall of the bushing near the output shaft via a short rod. A roller groove is provided on the inner wall of the side seat at a position corresponding to the roller. The outer wall of the roller is in rolling connection with the inner wall of the roller groove.

[0012] Preferably, the end of the roller away from the bushing is rotatably connected to a connecting block, and the connecting shaft arm at the right end of the second fixed shaft seat is fixed to the side wall of the connecting block.

[0013] Preferably, a shaped gear is fixed to the outer wall of the bushing at the end away from the roller, and a drive motor is fixed to the inner wall of the side seat at the upper end of the shaped gear. An adjusting gear is fixed to the output end of the drive motor, and the adjusting gear meshes with the outer wall of the shaped gear.

[0014] Preferably, a lifting frame connecting seat is fixed to the inner wall of the side seat at the end of the drive motor away from the bushing, a lifting frame is slidably connected to the outer wall of the lifting frame connecting seat, a spline shaft is fixed to the inner wall of the lifting frame at the center of the left side of the adjusting gear, and the center of the left side of the outer wall of the adjusting gear is splinedly connected to the spline shaft by opening a spline groove.

[0015] Preferably, a support plate is fixed to the outer wall of the lifting frame on the side away from the drive motor, and a hydraulic lifting rod for pushing the lifting frame to slide is fixed to the inner wall of the side seat at a position corresponding to the support plate, and the output shaft of the hydraulic lifting rod is fixed at a position corresponding to the outer wall of the support plate.

[0016] The beneficial effects of this utility model are:

[0017] In this invention, the adjustment component allows for adjustment of the machining angles of the output shaft and the machining tool as needed. Moreover, the adjustment component is composed entirely of a purely mechanical structure, which provides better resistance to the impact forces generated during machining and reduces the risk of structural damage due to impact forces, thus extending the service life of the device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the external structure of the present invention viewed from the front.

[0019] Figure 2 This is a partial cross-sectional view of the present invention from the front view.

[0020] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;

[0021] Figure 4 This is a three-dimensional structural diagram of the bushing of this utility model;

[0022] Figure 5 This is a three-dimensional structural diagram of the lifting frame in this utility model.

[0023] In the diagram: 100, side seat; 200, drive shaft; 201, upper bevel gear; 202, side bevel gear; 210, power shaft; 220, bearing seat; 230, first fixed shaft seat; 240, bushing; 241, special-shaped gear; 300, output shaft; 301, bottom bevel gear; 310, machining tool; 320, second fixed shaft seat; 330, connecting block; 340, roller; 341, roller groove; 400, drive motor; 410, adjusting gear; 420, lifting frame; 421, splined shaft; 422, hydraulic lifting rod; 423, lifting frame connecting seat. Detailed Implementation

[0024] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0025] See attached document Figures 1-5This utility model provides a variable angle tool holder mechanism for a four-axis machine tool, including a side seat 100. A power shaft 210 is rotatably connected to one side of the outer wall of the side seat 100. Side bevel gears 202 are fixed on both sides of the outer wall of the power shaft 210. The top of the right side bevel gear 202 meshes with an upper bevel gear 201. The bottom end of the transmission shaft 200 is fixedly connected to the top of the outer wall of the upper bevel gear 201. The transmission shaft 200 is provided at the upper end of the outer wall of the power shaft 210. An output shaft 300 is provided at the bottom end of the outer wall of the power shaft 210 and below the transmission shaft 200. The left side bevel gear 202... A bottom bevel gear 301 is engaged at the bottom of the outer wall. The upper end of the output shaft 300 is fixedly connected to the bottom of the outer wall of the bottom bevel gear 301. A machining tool 310 is connected to the bottom of the outer wall of the output shaft 300. Specifically, the transmission shaft 200 is connected to the power output end of the machine tool. The transmission shaft 200 drives the upper bevel gear 201 to rotate. When the upper bevel gear 201 rotates, it can drive the side bevel gear 202 and the power shaft 210 to rotate through meshing. When the left side bevel gear 202 rotates, it can drive the bottom bevel gear 301, the output shaft 300 and the machining tool 310 to rotate through meshing.

[0026] The drive shaft 200 and output shaft 300 are connected to the power shaft 210 via connecting components. These connecting components include bearing seats 220, of which three are provided. Two bearing seats 220 are mounted on the outer wall of the power shaft 210 and located to the left of the left-side bevel gear 202, while one bearing seat 220 is mounted on the outer wall of the power shaft 210 and located to the right of the right-side bevel gear 202. Each bearing seat 220 is a bearing, and its inner ring is fixed to the outer wall of the power shaft 210. A first fixed bearing seat 230 is mounted on the outer wall of the drive shaft 200, also a bearing, which serves to support the drive shaft 200 without affecting its rotation. The first fixed shaft seat 230 is fixedly connected to the bearing seats 220 at the first position on the left and the right position on the right via connecting shaft arms. The second fixed shaft seat 320 is installed on the outer wall side of the output shaft 300. The left end of the second fixed shaft seat 320 is fixed to the bearing seat 220 at the second position on the left via connecting shaft arms. The right end of the second fixed shaft seat 320 is connected to the adjusting component via connecting shaft arms. The second fixed shaft seat 320 is provided to support the output shaft 300 without affecting its rotation, and also allows personnel to easily control the output shaft 300 to swing back and forth, thereby enabling angle adjustment of the output shaft 300.

[0027] The inner wall of the side seat 100 is provided with an adjustment component for adjusting the angle of the output shaft 300. The adjustment component includes a bushing 240, which is rotatably connected to the side end of the inner wall of the side seat 100. The side end of the power shaft 210 is rotatably connected to the inner wall of the side seat 100. The outer wall of the side seat 100 is rotatably connected to the inner wall of the bushing 240. A roller 340 is connected to the outer wall of the bushing 240, which is close to the output shaft 300, via a short rod. A roller groove 34 is provided on the inner wall of the side seat 100 at a position corresponding to the roller 340. 1. The roller groove 341 is designed to limit the rolling position of the roller 340. The shape of the roller groove 341 corresponds to the swing trajectory of the output shaft 300. Specifically, the roller groove 341 and the swing trajectory of the output shaft 300 can be set as concentric circles. The outer wall of the roller 340 is in rolling connection with the inner wall of the roller groove 341. The end of the roller 340 away from the bushing 240 is rotatably connected to the connecting block 330. The connecting shaft arm at the right end of the second fixed shaft seat 320 is fixed to the side wall of the connecting block 330. When the roller 340 rolls, it can drive the second fixed shaft seat 320 and the output shaft 300 to rotate together via the connecting block 330 and the connecting shaft arm, thereby adjusting the machining angle of the output shaft 300. A special-shaped gear 241 is fixed to the outer wall of the bushing 240 away from the roller 340. A drive motor 400 is fixed to the inner wall of the side seat 100 above the special-shaped gear 241. An adjusting gear 410 is fixed to the output end of the drive motor 400. The adjusting gear 410 and the special-shaped gear 241 are connected. The outer wall of 41 meshes. Specifically, the irregular gear 241 is semi-circular, and anti-detachment blocks can be set at both ends of the irregular gear 241 to prevent the adjusting gear 410 from separating from the irregular gear 241. It is set in the opposite position to the roller 340. The drive motor 400 can drive the adjusting gear 410 to rotate after being powered on. When the adjusting gear 410 rotates, it can rotate with the irregular gear 241 by meshing with the drive shaft sleeve 240, thereby adjusting the position of the roller 340.

[0028] A lifting frame connecting seat 423 is fixed to the inner wall of the side seat 100 at the end of the drive motor 400 away from the bushing 240. A lifting frame 420 is slidably connected to the outer wall of the lifting frame connecting seat 423. The lifting frame 420 and the lifting frame connecting seat 423 can slide through a block and a slot, allowing the lifting frame 420 to separate from the lifting frame connecting seat 423. A splined shaft 421 is fixed to the inner wall of the lifting frame 420 at the center of the left side of the adjusting gear 410. The center of the left side of the outer wall of the adjusting gear 410 is splinedly connected to the splined shaft 421 via a spline groove. When the lifting frame 420 separates from the lifting frame connecting seat 423, the splined shaft 421 separates from the spline groove, and the adjusting gear... Gear 410 can rotate. When spline shaft 421 is inserted into spline groove, it can lock the adjusting gear 410, making the entire adjusting component unable to rotate, thereby fixing the output shaft 300. A support plate is fixed on the outer wall of the lifting frame 420 away from the drive motor 400. A hydraulic lifting rod 422 for pushing the lifting frame 420 to slide is fixed on the inner wall of the side seat 100 at a position corresponding to the support plate. The output end of the hydraulic lifting rod 422 is fixed at a position corresponding to the outer wall of the support plate. The hydraulic lifting rod 422 is set to control the extension and retraction of the lifting frame 420 and the lifting frame connecting seat 423 through the output end, thereby controlling the connection between the spline shaft 421 and the spline groove.

[0029] The usage process of this utility model is as follows: First, personnel can assemble the device according to the above instructions and fix the device in a suitable position on the machine tool. Then, when processing is required, the spline shaft 421 can be connected with the spline groove, so that the adjustment component is locked and fixed. The output shaft of the machine tool can drive the transmission shaft 200 to rotate. The transmission shaft 200 can drive the power shaft 210 and the left side bevel gear 202 to rotate through the upper bevel gear 201 and the right side bevel gear 202. The left side bevel gear 202 can drive the bottom bevel gear 301, the output shaft 300 and the processing tool 310 to rotate through meshing, thereby enabling the workpiece to be processed and produced.

[0030] When the angle of the machining tool 310 needs to be adjusted, the operator can control the hydraulic lifting rod 422 to extend via the controller, causing the lifting frame 420 to extend to the left, thus separating the spline shaft 421 from the spline groove at the top of the adjusting gear 410. Then, the drive motor 400 is powered on and started, causing the drive motor 400 to drive the adjusting gear 410 to rotate through its output end. When the adjusting gear 410 rotates, it can drive the drive bushing 240 to rotate with the special gear 241. When the bushing 240 rotates, it can drive the roller 340 to rotate. When the roller 340 rotates, it can drive the second fixed shaft seat 320 to swing back and forth through the connecting block 330, thereby adjusting the machining angle of the machining tool 310. After the adjustment is completed, the drive motor 400 can be turned off, and the lifting frame 420 can be controlled to retract, causing the spline shaft 421 to engage with the spline groove, thereby locking the adjusting components and allowing the machining tool 310 to perform normal machining.

[0031] The above description is merely a preferred embodiment of this utility model. Any person skilled in the art may modify this utility model or modify it into an equivalent technical solution using the technical solutions described above. Therefore, any simple modifications or equivalent substitutions made based on the technical solutions of this utility model are within the scope of protection claimed by this utility model.

Claims

1. A variable-angle tool holder mechanism for a four-axis machine tool, comprising a side seat (100), wherein a power shaft (210) is rotatably connected to one side of the outer wall of the side seat (100), a transmission shaft (200) is disposed at the upper end of the outer wall of the power shaft (210), and an output shaft (300) is disposed at the bottom end of the outer wall of the power shaft (210) and below the transmission shaft (200), wherein the transmission shaft (200) and the output shaft (300) are connected to the power shaft (210) via a connecting component, characterized in that: The inner wall of the side seat (100) is provided with an adjustment component for adjusting the angle of the output shaft (300).

2. The variable angle tool holder mechanism for a four-axis machine tool according to claim 1, characterized in that: Both sides of the outer wall of the power shaft (210) are fixed with side bevel gears (202), and the top of the right side bevel gear (202) is meshed with an upper bevel gear (201). The bottom of the transmission shaft (200) is fixedly connected to the top of the outer wall of the upper bevel gear (201).

3. A variable-angle tool holder mechanism for a four-axis machine tool according to claim 2, characterized in that: The bottom end of the outer wall of the left-side bevel gear (202) is meshed with a bottom bevel gear (301). The upper end of the output shaft (300) is fixedly connected to the bottom end of the outer wall of the bottom bevel gear (301). A machining tool (310) is connected to the bottom end of the outer wall of the output shaft (300).

4. A variable-angle tool holder mechanism for a four-axis machine tool according to claim 2, characterized in that: The connecting component includes bearing housings (220), and the number of bearing housings (220) is three. Two of the bearing housings (220) are installed on the outer wall of the power shaft (210) and located to the left of the left side bevel gear (202). One of the bearing housings (220) is installed on the outer wall of the power shaft (210) and located to the right of the right side bevel gear (202).

5. A variable-angle tool holder mechanism for a four-axis machine tool according to claim 4, characterized in that: The outer wall of the drive shaft (200) is equipped with a first fixed shaft seat (230). The two ends of the first fixed shaft seat (230) are fixedly connected to the bearing seats (220) at the first position on the left and the right position on the right via connecting shaft arms. The outer wall side of the output shaft (300) is equipped with a second fixed shaft seat (320). The left end of the second fixed shaft seat (320) is fixed to the bearing seat (220) at the second position on the left via connecting shaft arms. The right end of the second fixed shaft seat (320) is connected to the adjusting component via connecting shaft arms.

6. A variable-angle tool holder mechanism for a four-axis machine tool according to claim 5, characterized in that: The adjusting component includes a bushing (240), which is rotatably connected to the inner wall of the side seat (100). The side end of the power shaft (210) is rotatably connected to the inner wall of the side seat (100). The outer wall of the side seat (100) is rotatably connected to the inner wall of the bushing (240). A roller (340) is connected to the outer wall of the bushing (240) near the output shaft (300) via a short rod. A roller groove (341) is provided on the inner wall of the side seat (100) at a position corresponding to the roller (340). The outer wall of the roller (340) is in rolling connection with the inner wall of the roller groove (341).

7. A variable-angle tool holder mechanism for a four-axis machine tool according to claim 6, characterized in that: The end of the roller (340) away from the bushing (240) is rotatably connected to a connecting block (330), and the connecting shaft arm at the right end of the second fixed shaft seat (320) is fixed to the side wall of the connecting block (330).

8. A variable-angle tool holder mechanism for a four-axis machine tool according to claim 6, characterized in that: A special gear (241) is fixed to the outer wall of the bushing (240) at the end away from the roller (340). A drive motor (400) is fixed to the inner wall of the side seat (100) at the upper end of the special gear (241). An adjusting gear (410) is fixed to the output end of the drive motor (400). The adjusting gear (410) meshes with the outer wall of the special gear (241).

9. A variable-angle tool holder mechanism for a four-axis machine tool according to claim 8, characterized in that: A lifting frame connecting seat (423) is fixed to the inner wall of the side seat (100) at the end of the drive motor (400) away from the bushing (240). A lifting frame (420) is slidably connected to the outer wall of the lifting frame connecting seat (423). A spline shaft (421) is fixed to the inner wall of the lifting frame (420) at the center of the left side of the adjusting gear (410). The center of the left side of the outer wall of the adjusting gear (410) is splinedly connected to the spline shaft (421) by opening a spline groove.

10. A variable-angle tool holder mechanism for a four-axis machine tool according to claim 9, characterized in that: A support plate is fixed to the outer wall of the lifting frame (420) on the side away from the drive motor (400). A hydraulic lifting rod (422) for pushing the lifting frame (420) to slide is fixed to the inner wall of the side seat (100) at a position corresponding to the support plate. The output shaft of the hydraulic lifting rod (422) is fixed at a position corresponding to the outer wall of the support plate.

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