Five-axis multi-angle CNC rotary table

Abstract

A five-axis multi-angle CNC turntable, comprising a mounting frame, a rotating box installed on the mounting frame, a workbench installed on the rotating box, a box body rotating device, a box body locking device, a platform rotating device, a platform locking device and several groups of limiting devices. Each group of limiting devices includes a cylinder body and a piston rod installed on the cylinder body. The upper part of the piston rod is arranged in a T shape. The bottom of the rotating turntable of the workbench is provided with a T-shaped groove with a wider inner width and a narrower outer width. The T-shaped groove surrounds the entire workbench. The upper end of the piston rod of the limiting device is matched with the T-shaped groove. When the limiting device is used for positioning, the piston rod limits the workbench. During production, the lower tooth disc oil cylinder locks the upper tooth disc oil cylinder at integer angles, and the positioning accuracy can reach 6 seconds of arc. The limiting device locks the workbench at non-integer angles, and the positioning accuracy can reach 20 seconds of arc. Therefore, it can be selected according to actual requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of machine tool accessories, and particularly to a five-axis multi-angle numerical control turntable. Background Art

[0002] In the existing ordinary numerical control milling machine, when machining, it is often necessary to fix the workpiece to be machined to the working platform through a fixture, and then machine the workpiece through the combined movement of the working platform and the milling cutter. However, the traditional working platform can only perform simple horizontal movement. Under the condition of one-time clamping of the workpiece to be machined, only one surface and its holes can be machined (it cannot be machined at any angle), or simple curved surfaces can be milled in three axes. If a pentahedron needs to be machined, it is necessary to clamp and replace the machining surface of the workpiece multiple times, and after replacing the fixture, it is necessary to re-align the tool, which is prone to errors and wastes a lot of time, affecting the machining efficiency; and there are potential safety hazards during the clamping process. Summary of the Invention

[0003] Therefore, in view of the deficiencies of the prior art, the purpose of the present invention is to provide a five-axis multi-angle numerical control turntable to solve the problem that the traditional machining platform cannot perform multi-indexing rotation and has poor practicability.

[0004] A five-axis multi-angle numerical control turntable includes a mounting frame, a rotating box mounted on the mounting frame, a workbench mounted on the rotating box, a box body rotating device, a box body locking device, a platform rotating device, and a platform locking device; the box body is installed on the mounting frame through a rotating shaft, and both the box body rotating device and the box body locking device are installed on the rotating shaft and the mounting frame; the platform rotating device includes a driving gear and a driving motor, and a rack meshing with the driving gear is arranged on the outer surface of the workbench;

[0005] The box body rotating device includes a first driving motor, a second driving motor, a first driving gear, a second driving gear, and a driven wheel. The first driving gear is mounted on the first driving motor and meshes with the driven wheel, the second driving gear is mounted on the second driving motor and meshes with the driven wheel, and the driven gear is fixed on the outer surface of a rotating shaft. When it is necessary to drive the rotating box to rotate, the first driving motor and the second driving motor respectively drive the driven wheel to rotate in the same direction through the first driving gear and the second driving gear. On the contrary, when the angle adjustment is completed, the first driving motor and the second driving motor respectively drive the first driving gear and the second driving gear to rotate in the opposite direction, and the box body locking device locks the rotating box.

[0006] The five-axis multi-angle CNC turntable further includes several groups of limiting devices. Each group of the limiting devices includes a cylinder block and a piston rod installed on the cylinder block. The upper part of the piston rod is arranged in a T shape. The bottom of the rotating turntable of the workbench is provided with a T-shaped groove that is wider inside and narrower outside. The T-shaped groove surrounds the entire workbench. The upper end of the piston rod of the limiting device is matched with the T-shaped groove. When using the limiting device for positioning, the piston rod limits the workbench.

[0007] Further, the mounting frame includes a bottom plate and two vertically opposite mounting plates arranged on the bottom plate. Both ends of the rotating shaft are respectively installed on the two mounting plates and can rotate relative to the mounting plates.

[0008] Further, the box body locking device includes a first tooth disc oil cylinder and a first locking tooth disc. The first tooth disc oil cylinder and the first locking tooth disc are both sleeved on the rotating shaft, and the adjacent surfaces of the first tooth disc oil cylinder and the first locking tooth disc are meshed with each other.

[0009] Further, the first locking tooth disc is installed on the outer side surface of the mounting plate. A rack is arranged on the outer surface of the first locking tooth disc, and a rack that can be meshed with it is arranged on the inner side surface of the first tooth disc oil cylinder.

[0010] Further, the platform locking device includes an upper locking tooth disc and a lower tooth disc oil cylinder that are arranged opposite to each other up and down and are meshed with each other. The upper locking tooth disc is installed on the bottom surface of the workbench.

[0011] Further, it further includes a locking device. The locking device includes a driving oil cylinder and a piston rod installed in the driving oil cylinder. The driving oil cylinder is arranged in the rotating box. The piston rod penetrates through the workbench from bottom to top and is provided with a limiting disc on the top surface of the workbench.

[0012] Further, the workbench includes a rotating turntable and a tooth ring arranged outside and below the rotating turntable. A rack that is meshed with the transmission gear is arranged on the outer surface of the tooth ring.

[0013] Further, a receiving groove is further arranged in the middle of the top surface of the rotating turntable. A through hole that penetrates up and down is arranged at the bottom of the receiving groove. The limiting disc is installed in the receiving groove, and the piston rod below the limiting disc penetrates through the through hole.

[0014] Further, an adjustment cavity is arranged on the inner side surface of the lower tooth disc oil cylinder. A limiting ring is arranged on the outer surface of the driving oil cylinder. The limiting ring extends into the adjustment cavity and divides the adjustment cavity into upper and lower two cavities. An upper oil pipe and a lower oil pipe that are respectively communicated with the two cavities are arranged on the outer side surface of the lower tooth disc oil cylinder.

[0015] In summary, the present invention realizes multi-angle adjustment of the processing platform by setting a rotatable box that can rotate vertically and a workbench that can rotate horizontally relative to the rotatable box, enabling the processing of a polyhedron workpiece with only one clamping during processing to achieve the processing of a pentahedron. In addition, the upper locking tooth disc and the lower tooth disc oil cylinder are engaged for positioning, and in cooperation with the positioning of the piston rod and the T-shaped groove, during production, the lower tooth disc oil cylinder locks the upper tooth disc oil cylinder at integer angles. The limiting device locks the workbench at non-integer angles. Therefore, it can be selected according to actual needs, with good flexibility, high processing accuracy, strong practicability, and strong promotion significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. is a schematic structural diagram of a five-axis multi-angle numerical control turntable of the present invention;

[0017] Figure 2 is Figure 1 a sectional view of the five-axis multi-angle numerical control turntable in FIG., where the bottom plate is not shown;

[0018] Figure 3 is Figure 2 an enlarged structural diagram of the lower tooth disc oil cylinder and the driving oil cylinder in FIG.;

[0019] Figure 4 is Figure 1 an exploded schematic diagram of the five-axis multi-angle numerical control turntable shown in FIG.;

[0020] Figure 5 is Figure 4 a schematic structural diagram when the workbench and the limiting device are installed in cooperation as shown in FIG. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to more clearly illustrate the technical solutions of the present invention, the present invention will be further described below with reference to the accompanying drawings.

[0022] As Figures 1 to 5 shown, the present invention provides a five-axis multi-angle numerical control turntable, which includes a mounting frame 10, a rotatable box 20, a workbench 30, a box body positioning device, and a workbench positioning device; both ends of the rotatable box 20 are mounted on the mounting frame 10, the workbench 30 is mounted on the rotatable box 20, the box body positioning device is arranged in the rotatable box 20, and the box body positioning device drives the rotatable box to rotate in a vertical plane and locks it. The workbench positioning device is arranged in the rotatable box 20 and connected to the workbench 30, and the workbench positioning device performs indexing rotation on the workbench in a horizontal direction and locks it.

[0023] The mounting bracket 10 includes a bottom plate 11 and two vertically opposite mounting plates 12 disposed on the bottom plate 11. On two opposite outer sides of the rotating box 20, a rotating shaft 21 extends outward respectively. The two rotating shafts 21 are respectively installed on the corresponding mounting plates 12. The box body position adjustment device includes a box body rotating device 40 and a box body locking device 50. The box body rotating device 40 and the box body locking device 50 are respectively installed in cooperation with the two rotating shafts 21. The box body rotating device 40 includes a first driving motor 41, a second driving motor 42, a first driving gear 43, a second driving gear 44 and a driven wheel 45. The first driving gear 43 is installed on the first driving motor 41 and meshes with the driven wheel 45. The second driving gear 44 is installed on the second driving motor 42 and meshes with the driven wheel 45. The driven gear 45 is fixed on the outer surface of a rotating shaft 21. When it is necessary to drive the rotating box to rotate, the first driving motor 41 and the second driving motor 42 respectively drive the driven wheel 45 to rotate in the same direction through the first driving gear 43 and the second driving gear 44. On the contrary, when the angle adjustment is completed, the first driving motor 41 and the second driving motor 42 respectively drive the first driving gear 43 and the second driving gear 44 to rotate in the reverse direction, and the box body locking device 50 locks the rotating box 20.

[0024] The box body locking device 50 includes a first tooth disc oil cylinder 51 and a first locking tooth disc 52. The first tooth disc oil cylinder 51 and the first locking tooth disc 52 are both sleeved on the rotating shaft 21 on the same side and are both disposed outside the mounting plate 12. The first locking tooth disc 52 is fixed on the outer side surface of the mounting plate 12, and the first tooth disc oil cylinder 51 is installed on the rotating shaft 21. A rack is provided on the outer surface of the first locking tooth disc 52, and a rack that can mesh with it is provided on the opposite surface of the first tooth disc oil cylinder 51 and the first locking tooth disc 52. By changing the oil inlet and outlet directions of the first tooth disc oil cylinder 51, the rack on the first tooth disc oil cylinder 51 is pushed forward or backward. When the rack on the first tooth disc oil cylinder 51 abuts forward, the rack on the first tooth disc oil cylinder 51 and the first locking tooth disc 52 are locked with each other to perform limit and prevent rotation. On the contrary, when the rack on the first tooth disc oil cylinder 51 moves backward, the rack on the first tooth disc oil cylinder 51 and the first locking tooth disc 52 are separated, and the rotating box can be adjusted in angle in the vertical direction.

[0025] The workbench 30 includes a rotating turntable 31 and a toothed ring 32 arranged outside the lower part of the rotating turntable 31. A receiving groove 33 is arranged in the middle of the rotating turntable 31, and a through hole penetrating up and down is arranged at the bottom of the receiving groove 33. The workbench positioning device includes a platform rotating device, a platform locking device and a locking device. The platform rotating device includes a driving motor 61 and a transmission gear 62 arranged on the driving motor 61. The driving motor 61 is installed on the inner side wall of the rotating box 20, and the transmission gear 62 meshes with the toothed ring 32. The driving motor 61 drives the transmission gear 62 to rotate, the transmission gear drives the toothed ring 32 to rotate, and the toothed ring 32 drives the rotating turntable 31 to rotate for indexing and positioning.

[0026] The locking device includes a driving oil cylinder 81 and a piston rod 82. The bottom end of the driving oil cylinder 81 is installed on the inner bottom surface of the rotating box 20, and the top extends into the workbench 30. The piston rod 82 is installed in the driving oil cylinder 81, and a limiting disc 83 is arranged at the top end of the piston rod 82. The piston rod 82 penetrates upward through the through hole, and the limiting disc 83 is installed in the receiving groove 311 of the rotating turntable 31.

[0027] The platform locking device includes an upper locking tooth disc 71 and a lower tooth disc oil cylinder 72. The upper locking tooth disc 71 is installed on the bottom surface of the rotating turntable 31, and the lower tooth disc oil cylinder 72 is installed on the outer side surface of the driving oil cylinder 81, and the upper locking tooth disc 71 and the lower tooth disc oil cylinder 72 are arranged opposite to each other up and down. In addition, racks that can mesh with each other are arranged on two opposite side surfaces of the upper locking tooth disc 71 and the lower tooth disc oil cylinder 72.

[0028] The lower tooth disc oil cylinder 72 includes a base 721 sleeved outside the driving oil cylinder 81, a lower oil cylinder 722, a top seat 723 and an upper oil cylinder 724. The base 721 and the top seat 723 are respectively installed at the upper and lower ends of the lower oil cylinder 722, and the inner side surfaces of the base 721 and the top seat 723 are closely fitted with the outer surface of the driving oil cylinder 81. The base 721, the top seat 723, the lower oil cylinder 722 and the driving oil cylinder 81 enclose a sealed positioning cavity 725. A limiting ring 83 is arranged on the outer surface of the driving oil cylinder 81, and the limiting ring 83 divides the positioning cavity 725 into upper and lower cavities.

[0029] The upper oil cylinder 724 is installed on the lower oil cylinder 722 outside the top seat 723. An upper oil cavity is provided inside the upper oil cylinder, and a lower oil cavity is provided inside the lower oil cylinder 722. An upper oil pipe 73 is provided in the upper oil cavity, and a lower oil pipe 74 is provided in the lower oil cavity. When the workbench 30 needs to be locked, the lower oil cavity discharges oil, and the upper oil cavity intakes oil and gradually fills the adjustment cavity 725 above the limit ring 83. Since the limit ring 83 is fixed and does not move, as the oil volume increases, the lower gear disc oil cylinder 72 gradually moves upward, and the rack on the lower gear disc oil cylinder 72 meshes with the rack on the lower surface of the upper locking gear disc 71 to lock. Conversely, the upper oil cavity discharges oil, and the lower oil cavity intakes oil, pushing the lower gear disc oil cylinder 72 downward to open the gear disc locking structure. In addition, the principle of the box body locking device 50 is the same as that of the platform locking device.

[0030] When adjusting the angle of the rotating box 20, the first gear disc oil cylinder 51 of the box body locking device 50 moves outward to loosen, and the box body rotating device 40 drives the rotating box 20 to rotate to the required angle. Then, the first gear disc oil cylinder 51 of the box body locking device 50 moves inward again to lock on the first locking gear disc 52.

[0031] When adjusting the angle of the workbench 30 in the horizontal direction, the driving oil cylinder 81 of the locking device drives the piston rod 82 to move upward to loosen, and the lower gear disc oil cylinder 72 of the platform locking device moves downward to loosen. The platform rotating device drives the workbench 30 to rotate to the set angle; the lower gear disc oil cylinder 72 moves upward to lock on the upper locking gear disc 71 on the bottom surface of the workbench 30, thus realizing the locking of the workbench 30. The driving oil cylinder 81 drives the piston rod 82 to move downward, and the piston rod 82 drives the workbench 30 to move downward, further reducing the gap between the upper locking gear disc 71 and the lower gear disc oil cylinder 72, thereby avoiding the problem that the locking is not firm due to tooth disc wear and loosening or improper meshing after long-term work.

[0032] Understandably, when the workbench 30 is angle-locked in the horizontal direction, although the cooperation between the rack on the lower gear disc oil cylinder 72 and the rack on the lower surface of the upper locking gear disc 71 can achieve precise locking, limited by the rack, it cannot achieve locking at any angle (there is an angle between adjacent teeth. For example, the gear disc can lock at 28° and 29°, but limited by the angle of the gear disc, it cannot lock at 28.5°). In this embodiment, the lower gear disc oil cylinder 72 only locks the upper gear disc oil cylinder 71 at integer angles, with a high overall positioning accuracy of up to 6 seconds of arc. To make up for locking at specific angles, the present invention further includes several groups of limiting devices 90. The limiting devices 90 lock the workbench 30 at non-integer angles, with a positioning accuracy of up to 20 seconds of arc. Each group of the limiting devices 90 includes a cylinder block 91 and a piston rod 92 installed on the cylinder block 91. The upper part of the piston rod 92 is provided in a T shape. A T-shaped groove 34 with a wider inner width and a narrower outer width is provided at the bottom of the rotating turntable 31 of the workbench 30. The T-shaped groove 34 is arranged around the entire workbench 30. The upper end of the piston rod 92 of the limiting device 90 is matched with the T-shaped groove 34. By changing the oil pressure change at both ends in the cylinder block 91, the piston rod 92 is pressed down into the T-shaped groove 34 for limiting or lifted upward to release the workbench. Since the T-shaped groove 34 surrounds the entire workbench 30, when the piston rod 92 releases the T-shaped groove 34, it does not affect the rotation of the workbench 30. When using the limiting device 90 for positioning, first release the lower gear disc oil cylinder 72 and the piston rod 92, then perform horizontal adjustment of the workbench 30. After the adjustment is completed, the piston rod 92 limits the workbench 30.

[0033] In summary, the present invention realizes multiple-angle adjustment of the processing platform by providing a rotatable box 20 that can rotate vertically and a workbench 30 that can rotate horizontally relative to the rotatable box 20, so that when machining a polyhedron workpiece, it is only necessary to clamp the workpiece once to realize the machining of the five-sided body of the main shaft. In addition, the upper locking gear disc 71 and the lower gear disc oil cylinder 72 are engaged for positioning, and are combined with the positioning of the piston rod and the T-shaped groove. During production, the lower gear disc oil cylinder 72 locks the upper gear disc oil cylinder 71 at integer angles. The limiting device 90 locks the workbench 30 at non-integer angles. Therefore, it can be selected according to actual needs, with good flexibility, high machining accuracy, strong practicability, and strong promotion significance.

[0034] The above-described embodiments only represent one implementation manner of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A five-axis multi-angle numerical control turntable, comprising a mounting frame, a rotating box installed on the mounting frame, and a workbench installed on the rotating box; characterized in that: It also includes a box body rotation device, a box body locking device, a platform rotation device, and a platform locking device; the box body is installed on the mounting frame through a rotating shaft, and both the box body rotation device and the box body locking device are installed on the rotating shaft and the mounting frame; the platform rotation device includes a transmission gear and a driving motor, and a rack meshing with the transmission gear is arranged on the outer surface of the workbench; the mounting frame includes a bottom plate and two vertically opposite mounting plates arranged on the bottom plate, and both ends of the rotating shaft are respectively installed on the two mounting plates and can rotate relative to the mounting plates; the platform locking device includes an upper locking tooth disc and a lower tooth disc oil cylinder arranged opposite to each other up and down, and the upper locking tooth disc is installed on the bottom surface of the workbench. The box body rotation device includes a first driving motor, a second driving motor, a first driving gear, a second driving gear, and a driven wheel. The first driving gear is installed on the first driving motor and meshes with the driven wheel. The second driving gear is installed on the second driving motor and meshes with the driven wheel. The driven wheel is fixed on the outer surface of a rotating shaft. When it is necessary to drive the rotating box to rotate, the first driving motor and the second driving motor respectively drive the driven wheel to rotate in the same direction through the first driving gear and the second driving gear. On the contrary, when the angle adjustment is completed, the first driving motor and the second driving motor respectively drive the first driving gear and the second driving gear to rotate in the opposite direction, and the box body locking device locks the rotating box. The five-axis multi-angle numerical control turntable also includes several groups of limiting devices. Each group of limiting devices includes a cylinder body and a piston rod installed on the cylinder body. The upper part of the piston rod is arranged in a T shape. A T-shaped groove with a wider inner width and a narrower outer width is provided at the bottom of the rotating turntable of the workbench. The T-shaped groove surrounds the entire workbench. The upper end of the piston rod of the limiting device cooperates with the T-shaped groove. When using the limiting device for positioning, the piston rod limits the workbench.

2. The five-axis multi-angle CNC turntable according to claim 1, characterized in that: The box body locking device includes a first tooth disc oil cylinder and a first locking tooth disc. Both the first tooth disc oil cylinder and the first locking tooth disc are sleeved on the rotating shaft, and the adjacent surfaces of the first tooth disc oil cylinder and the first locking tooth disc are meshed with each other.

3. The five-axis multi-angle CNC turntable according to claim 2, characterized in that: The first locking tooth disc is installed on the outer side surface of the mounting plate. A rack is arranged on the outer surface of the first locking tooth disc, and a rack that can mesh with it is arranged on the inner side surface of the first tooth disc oil cylinder.

4. The five-axis multi-angle numerical control turntable according to claim 1, characterized in that: It also includes a locking device. The locking device includes a driving oil cylinder and a piston rod installed in the driving oil cylinder. The driving oil cylinder is arranged in the rotating box. The piston rod of the locking device penetrates through the workbench from bottom to top and is provided with a limiting disc on the top surface of the workbench.

5. The five-axis multi-angle CNC rotary table according to claim 4, characterized in that: The workbench includes a rotating turntable and a tooth ring arranged outside and sleeved under the rotating turntable. A rack meshing with the transmission gear is arranged on the outer surface of the tooth ring.

6. The five-axis multi-angle CNC rotary table according to claim 5, characterized in that: A receiving groove is also arranged in the middle of the top surface of the rotating turntable. A through hole penetrating up and down is arranged at the bottom of the receiving groove. The limiting disc is installed in the receiving groove, and the piston rod of the locking device below the limiting disc penetrates through the through hole.

7. The five-axis multi-angle CNC rotary table according to claim 5, characterized in that: An adjustment cavity is provided on the inner side of the lower sprocket oil cylinder, and a limit ring is provided on the outer surface of the driving oil cylinder. The limit ring extends into the adjustment cavity and divides the adjustment cavity into upper and lower cavities. An upper oil pipe and a lower oil pipe that are respectively communicated with the two cavities are provided on the outer side of the lower sprocket oil cylinder.

Images