Multifunctional multi-axis linkage computer numerical control grinding machine for internal and external cylinders and threads

Abstract

A multifunctional multi-axis linkage computer numerical control grinding machine for internal and external cylinders and threads, the grinding machine comprising: a base (1) provided with a machining table (13); N grinding spindles (2) symmetrically arranged on the machining table (13); a cross-moving assembly (3) arranged on the base (1) and located above the grinding spindles (2); a lifting assembly (7) arranged on the cross-moving assembly (3); a machining base (5) slidably arranged on the cross-moving assembly (3) and connected to the lifting assembly (7); and N machining spindles (6) symmetrically arranged on the machining base (5) and corresponding to the grinding spindles (2) on a one-to-one basis. In the multifunctional multi-axis linkage computer numerical control grinding machine for internal and external cylinders and threads, the grinding spindles and the machining spindles are both symmetrically arranged to reduce vibrations, thereby improving the machining precision. The N spindles are symmetrically and evenly distributed, and can be arranged vertically, horizontally or obliquely. The grinding machine can be equipped with different grinding wheel tools, so as to be widely applied to the grinding of internal bores, external cylinders and threads. The grinding machine has a light overall weight, occupies a small area, and consumes little energy.

Description

A multi-functional, multi-axis linkage CNC internal and external cylindrical and thread grinding machine Technical Field

[0001] This invention relates to a grinding machine, and more particularly to a multi-functional, multi-axis linkage CNC internal and external cylindrical and thread grinding machine. Background Technology

[0002] Existing multi-axis grinding machines, such as the vertical internal and external cylindrical and end face grinding machine disclosed in CN210189256U, although they achieve multi-point control and adjust the position of the grinding head and the worktable, have large vibrations in actual use. The vibrations affect the machining accuracy, resulting in the inability to achieve high-precision grinding. Summary of the Invention

[0003] To address the aforementioned problems of easy vibration and the resulting inability to guarantee machining accuracy, this invention provides a multi-functional, multi-axis linkage CNC internal and external cylindrical and thread grinding machine. The specific technical solution is as follows:

[0004] A multi-functional, multi-axis linkage CNC internal and external cylindrical and thread grinding machine includes: a base with a machining table; N grinding spindles symmetrically arranged on the machining table; a cross-shaped moving assembly disposed on the base and located above the grinding spindles; a lifting assembly disposed on the cross-shaped moving assembly; a machining seat slidably disposed on the cross-shaped moving assembly and connected to the lifting assembly; and N machining spindles symmetrically arranged on the machining seat and corresponding one-to-one with the grinding spindles; wherein N is 2, 4, 6 or 8.

[0005] Preferably, it also includes: a sand-repairing assembly, located at the center of the processing table.

[0006] Preferably, the cross-shaped moving assembly includes: a longitudinal frame slidably disposed on the top of the base; a longitudinal drive device disposed on the base and connected to the longitudinal frame; a transverse frame slidably disposed on the top of the longitudinal frame; and a transverse drive device disposed on the longitudinal frame and connected to the transverse frame, wherein the processing seat is slidably disposed on the transverse frame.

[0007] Furthermore, the lifting assembly includes: a lifting drive device disposed on the transverse frame; and a lifting frame disposed on the lifting drive device and connected to the processing seat.

[0008] Furthermore, two longitudinal drive devices are symmetrically provided.

[0009] Furthermore, the transverse frame is a box structure.

[0010] Preferably, the base includes: a base plate, with the processing table disposed at the center of the base plate; and side plates symmetrically disposed at both ends of the base plate.

[0011] Furthermore, the processing table has a box-like structure.

[0012] Furthermore, both the base plate and the side plate are provided with several weight-reducing holes.

[0013] Preferably, the machining base includes: N fixed columns for mounting the machining spindle; two first connecting columns, the two ends of which are respectively connected to the fixed columns and are symmetrically arranged, and are also connected to the lifting assembly; and two second connecting columns, the two ends of which are conveniently connected to the fixed columns and are symmetrically arranged, and the second connecting columns are perpendicular to the first connecting columns.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention provides a multi-functional multi-axis linkage CNC internal and external cylindrical and thread grinding machine, which reduces vibration by symmetrically setting the grinding spindle and the machining spindle, thereby improving the machining accuracy.

[0016] N spindles are symmetrically distributed, allowing for vertical, horizontal, and inclined configurations. Overall rigidity is increased by 4 times, amplitude is reduced by 4 times, accuracy is increased by 16 times, and machining cycle speed is increased by 4 times. Different grinding wheels can be interchanged for wide application in grinding internal holes, external diameters, and threads. The overall design is lightweight, occupies a small area, and consumes little energy. Attached Figure Description

[0017] Figure 1 is a perspective view of this application from the first viewpoint;

[0018] Figure 2 is a perspective view of this application from a second angle;

[0019] Figure 3 is a front view of this application;

[0020] Figure 4 is a cross-sectional view along line AA in Figure 3;

[0021] Figure 5 is a cross-sectional view along line BB in Figure 3;

[0022] Figure 6 is a top view of this application;

[0023] Figure 7 is a side view of this application;

[0024] Figure 8 is a schematic diagram of the base structure;

[0025] Figure 9 is a schematic diagram of the longitudinal frame;

[0026] Figure 10 is a schematic diagram of the horizontal frame structure;

[0027] Figure 11 is a structural schematic diagram of the lifting frame;

[0028] Figure 12 is a schematic diagram of the machining base. Detailed Implementation

[0029] The present invention will now be further described with reference to the accompanying drawings.

[0030] As shown in Figures 1 to 12, a multi-functional multi-axis linkage CNC internal and external cylindrical and thread grinding machine includes a base 1, grinding spindles 2, a cross-moving assembly 3, a lifting assembly 7, a machining seat 5, and machining spindles 6. A machining table 13 is located at the center of the base 1. Four grinding spindles 2 are fixed on the machining table 13, located at opposite ends of the table and symmetrically arranged. The cross-moving assembly 3 is installed on the top of the base 1, above the grinding spindles 2, and is used for movement in the X and Y directions. The lifting assembly 7 is installed on the cross-moving assembly 3 and is used for movement in the Z direction. The machining seat 5 is slidably installed on the cross-moving assembly 3 and connected to the lifting assembly 7, and is used for movement along the Z direction. Four machining spindles 6 are installed at opposite ends of the machining seat 5 and symmetrically arranged, with each machining spindle 6 corresponding to one of the grinding spindles 2.

[0031] The grinding spindle and the machining spindle 6 are in one-to-one correspondence, and the quantity of each is N. N can be 2, 4, 6 or 8, which can be set according to actual needs.

[0032] The grinding spindle 2 is equipped with a grinding wheel, and the machining spindle 6 is equipped with a workpiece. The grinding spindle 2 is fixed, while the machining spindle 6 can move along the X, Y and Z directions. The grinding spindle 2 drives the workpiece to the grinding wheel on the grinding spindle 2 through the cross moving assembly 3 and the lifting assembly 7 to grind the workpiece.

[0033] The four symmetrically arranged machining spindles 6 and grinding spindle 2 are used to simultaneously process four identical workpieces, greatly improving efficiency. The symmetrical structure also ensures uniform force distribution, reducing vibration and thus improving machining accuracy. Overall, it achieves a 4-fold increase in rigidity, a 4-fold reduction in amplitude, a 16-fold increase in accuracy, and a 4-fold increase in machining cycle speed. It can be configured vertically, horizontally, or at an angle as needed. By changing different grinding wheels, it can be widely used for grinding internal holes, external diameters, and threads. Furthermore, because one machine achieves simultaneous processing of four workpieces and employs a symmetrical structure, it significantly reduces the footprint.

[0034] To facilitate automatic dressing of the grinding wheel, a dressing assembly 4 is also included. The dressing assembly 4 is installed at the center of the machining table 13. Specifically, the dressing assembly 4 includes an ultra-hard silicon carbide grinding wheel 41, a dressing spindle 42, and a dressing motor 43. The dressing spindle 42 is fixed at the center of the machining table 13, and the dressing motor 43 is connected to the dressing spindle 42. The ultra-hard silicon carbide grinding wheel 41 is installed on the dressing spindle 42. When the grinding wheel needs to be dressed, the grinding wheel is removed from the grinding spindle 2 and installed on the machining spindle 6. Then, the grinding wheel is moved to the ultra-hard silicon carbide grinding wheel 41 for dressing by the cross movement assembly 3 and the lifting assembly 7.

[0035] The base 1 includes a base plate 11, side plates 12, and a processing table 13. The side plates 12 are symmetrically arranged on both sides of the base plate 11, and the processing table 13 is located at the center of the base plate 11. The base plate 11 and the side plates 12 are provided with several weight-reducing holes to reduce weight. The processing table 13 has a box structure, which can reduce weight and ensure rigidity.

[0036] The cross-shaped moving assembly 3 includes a longitudinal frame 34, a longitudinal drive device, a transverse frame 37, and a transverse drive device. The longitudinal frame 34 is slidably mounted on the top of the side plate 12 of the base 1 via a linear guide pair. The longitudinal drive device is mounted on the top plate of the side plate 12 and connected to the longitudinal frame 34. The longitudinal frame 34 moves along the Y direction under the drive of the longitudinal drive device. The transverse frame 37 is slidably mounted on the top of the longitudinal frame 34 via a linear guide pair. The transverse drive device is mounted on the top of the longitudinal frame 34 and connected to the transverse frame 37. The machining seat 5 is slidably mounted on the transverse frame 37. Two longitudinal drive devices are symmetrically arranged to ensure uniform force distribution and improve machining accuracy. The longitudinal drive device includes a longitudinal motor 31, a longitudinal lead screw 32, and a longitudinal nut 33. The longitudinal motor 31 is mounted on the top of the side plate 12. The longitudinal lead screw 32 is rotatably mounted on the top of the side plate 12 via a bearing seat and connected to the longitudinal motor 31. The longitudinal nut 33 is movably mounted on the longitudinal lead screw 32 and connected to the longitudinal frame 34. The lateral drive device includes a lateral motor 35, a lateral lead screw 36, and a lateral nut. The lateral motor 35 is fixed to one end of the top of the longitudinal frame 34. The lateral lead screw 36 is rotatably mounted on the top plate of the longitudinal frame 34 via a bearing seat and is connected to the lateral motor 35. The lateral nut is movably mounted on the lateral lead screw 36 and is connected to the lateral frame 37.

[0037] To reduce weight, the horizontal frame 37 has a box structure.

[0038] The lifting assembly 7 includes a lifting drive device and a lifting frame 74. The lifting drive device is mounted on top of the transverse frame 37 and connected to the lifting frame 74. The lifting frame 74 is connected to the processing base 5. The lifting drive device includes a lifting motor 71, a lifting screw 72, and a lifting nut 74. The lifting motor 71 is mounted on top of the transverse frame 37. The lifting screw 72 is rotatably mounted on the transverse frame 37 via a bearing seat and connected to the lifting motor 71. The lifting nut 74 is movably mounted on the lifting screw 72 and connected to the lifting frame 74.

[0039] The machining base 5 includes fixed columns 51, first connecting columns 52 and second connecting columns 53. There are four fixed columns 51 arranged symmetrically. The machining spindle 6 is mounted on the fixed columns 51. There are two first connecting columns 52 and two second connecting columns 53 arranged symmetrically and perpendicular to each other. The two ends of the first connecting column 52 are connected to the fixed columns 51 respectively. The center of the first connecting column 52 is also connected to the lifting frame 74. The two first connecting columns 52 are located at the two ends of the lifting frame 74 respectively. The two ends of the second connecting column 53 are convenient to be connected to the fixed columns 51.

[0040] Both machining spindle 6 and grinding spindle 2 are existing spindles and are mature technologies, so they will not be described in detail here.

[0041] During operation, four identical workpieces to be processed are mounted on four machining spindles 6, and then four identical grinding wheels are mounted on the grinding spindle 2. The machining spindle 6 and the grinding spindle 2 are then started. The control system drives the cross movement assembly 3 and the lifting assembly 7 to automatically move the workpieces to the grinding wheels for processing. This allows for the simultaneous processing of four workpieces. Furthermore, the symmetrical structure reduces vibration, thereby ensuring processing accuracy.

[0042] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these embodiments will all fall within the scope of protection of the claims of the present invention.

Claims

1. A multi-functional, multi-axis linkage CNC internal and external cylindrical and thread grinding machine, characterized in that, include: The base (1) is equipped with a processing table (13); N grinding spindles (2) are symmetrically arranged on the machining table (13); A cross-shaped moving assembly (3) is disposed on the base (1) and located above the grinding spindle (2); A lifting assembly (7) is mounted on the cross-shaped moving assembly (3); The processing seat (5) is slidably disposed on the cross-shaped moving assembly (3) and connected to the lifting assembly (7); and N machining spindles (6) are symmetrically arranged on the machining seat (5) and correspond one-to-one with the grinding spindle (2); Where N is 2, 4, 6 or 8.

2. The multi-functional multi-axis linkage CNC internal and external cylindrical and thread grinding machine according to claim 1, characterized in that, Also includes: The sand-repairing component (4) is located at the center of the processing table (13).

3. The multi-functional multi-axis linkage CNC internal and external cylindrical and thread grinding machine according to claim 1, characterized in that, The cross-shaped moving component (3) includes: The longitudinal frame (34) is slidably disposed on the top of the base (1); A longitudinal drive device is mounted on the base (1) and connected to the longitudinal frame (34); A transverse frame (37) is slidably disposed on top of the longitudinal frame (34); and A transverse drive device is mounted on the longitudinal frame (34) and connected to the transverse frame (37), and the processing seat (5) is slidably mounted on the transverse frame (37).

4. A multi-functional multi-axis linkage CNC internal and external cylindrical and thread grinding machine according to claim 3, characterized in that, The lifting assembly (7) includes: A lifting drive device is mounted on the transverse frame (37); and The lifting frame (74) is mounted on the lifting drive device and connected to the processing seat (5).

5. A multi-functional multi-axis linkage CNC internal and external cylindrical and thread grinding machine according to claim 3, characterized in that, Two longitudinal drive devices are symmetrically arranged.

6. A multi-functional multi-axis linkage CNC internal and external cylindrical and thread grinding machine according to claim 3, characterized in that, The horizontal frame (37) is a box structure.

7. A multi-functional multi-axis linkage CNC internal and external cylindrical and thread grinding machine according to claim 1, characterized in that, The base (1) includes: The base plate (11) is located at the center of the processing table (13); Side plates (12) are symmetrically arranged at both ends of the bottom plate (11).

8. A multi-functional multi-axis linkage CNC internal and external cylindrical and thread grinding machine according to claim 7, characterized in that, The processing table (13) has a box structure.

9. A multi-functional multi-axis linkage CNC internal and external cylindrical and thread grinding machine according to claim 7, characterized in that, Both the base plate (11) and the side plate (12) are provided with several weight-reducing holes.

10. A multi-functional multi-axis linkage CNC internal and external cylindrical and thread grinding machine according to claim 1, characterized in that, The processing base (5) includes: N fixed posts (51) are used to install the machining spindle (6); Two first connecting columns (52), each end of which is connected to the fixed column (51) and symmetrically arranged, and also connected to the lifting assembly (7); and Two second connecting posts (53) are provided, with their ends conveniently connected to the fixed post (51) and arranged symmetrically. The second connecting posts (53) are arranged perpendicularly to the first connecting post (52).

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