Multifunctional multi-axis linkage numerical control internal and external circle and thread grinding machine

Abstract

The invention relates to a multifunctional multi-axis linkage numerical control internal and external circle and thread grinding machine which comprises a base, a grinding head and a grinding head. The N grinding spindles are symmetrically arranged on the machining table; the cross-shaped moving assembly is arranged on the base and located above the grinding main shaft; the lifting assembly is arranged on the cross-shaped moving assembly; the machining base is arranged on the cross-shaped moving assembly in a sliding mode and connected with the lifting assembly; the N machining spindles are symmetrically arranged on the machining base and correspond to the grinding spindles one to one. According to the multifunctional multi-shaft linkage numerical control internal and external circle and thread grinding machine, the grinding main shaft and the machining main shaft are symmetrically arranged to reduce vibration, and then the machining precision is improved. The N main shafts are symmetrically and uniformly distributed and can be vertically, horizontally and obliquely arranged. The overall rigidity is improved by 4 times, the amplitude is reduced by 4 times, the precision is improved by 16 times, and the machining rhythm speed is improved by 4 times. Different grinding wheel tools can be replaced so as to be widely applied to grinding machining of inner holes, outer circles and threads. The whole weight is light, the occupied area is small, and energy consumption is low.

Description

Technical Field

[0001] The invention relates to a grinding machine, in particular to a multifunctional multi-axis linkage numerically controlled internal and external cylindrical and thread grinding machine. Background Art

[0002] Existing multi-axis grinders, such as a vertical internal and external cylindrical and end surface grinder disclosed in CN210189256U, have realized multi-point control and can adjust the position of the grinding head and the worktable. However, in actual use, the vibration is large, and the vibration affects the processing accuracy, resulting in the inability to achieve high-precision grinding. Summary of the invention

[0003] In order to solve the above-mentioned problem of easy vibration and the problem of not being able to ensure machining accuracy caused by vibration, the present invention provides a multifunctional multi-axis linkage CNC internal and external cylindrical and thread grinding machine, and the specific technical solution is as follows:

[0004] A multifunctional multi-axis linkage CNC internal and external cylindrical and thread grinding machine, comprising: a base, provided with a processing table; N grinding spindles, symmetrically arranged on the processing table; a cross moving assembly, arranged on the base and located above the grinding spindles; a lifting assembly, arranged on the cross moving assembly; a processing seat, slidably arranged on the cross moving assembly and connected to the lifting assembly; and N processing spindles, symmetrically arranged on the processing 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 repair component, which is arranged at the center of the processing table.

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

[0007] Furthermore, the lifting assembly includes: a lifting drive device, which is arranged on the transverse frame; and a lifting frame, which is arranged 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 comprises: a bottom plate, the processing table is arranged at the center of the bottom plate; and side plates are symmetrically arranged at both ends of the bottom plate.

[0011] Furthermore, the processing table is a box structure.

[0012] Furthermore, a plurality of weight-reducing holes are provided on the bottom plate and the side plates.

[0013] Preferably, the processing seat includes: N fixed columns for installing the processing 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 arranged perpendicular to the first connecting columns.

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

[0015] The multifunctional multi-axis linkage CNC internal and external cylindrical and thread grinding machine provided by the present invention reduces vibration by symmetrically arranging the grinding spindle and the processing spindle, thereby improving the processing accuracy.

[0016] N main axes are evenly distributed symmetrically, and can be placed vertically, horizontally, or obliquely. The overall rigidity is increased by 4 times, the amplitude is reduced by 4 times, the precision is increased by 16 times, and the processing cycle speed is increased by 4 times. Different grinding wheel tools can be replaced to be widely used in the grinding of inner holes, outer circles, and threads. The overall weight is light, the floor space is small, and the energy consumption is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a stereogram of the first viewing angle of the present application;

[0018] Figure 2 It is a stereogram of the second viewing angle of the present application;

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

[0020] Figure 4 is along Figure 3 Sectional view along line AA;

[0021] Figure 5 is along Figure 3 Sectional view along the midline BB;

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

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

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

[0025] Fig. 9 It is a structural diagram of the longitudinal frame;

[0026] Fig.10 It is a structural diagram of the horizontal frame;

[0027] Fig.11 It is a structural diagram of the lifting frame;

[0028] Fig.12 It is a structural diagram of the processing seat. DETAILED DESCRIPTION

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

[0030] like Figures 1 to 12 As shown, a multifunctional multi-axis linkage CNC internal and external cylindrical and thread grinding machine includes a base 1, a grinding spindle 2, a cross moving assembly 3, a lifting assembly 7, a processing seat 5 and a processing spindle 6. A processing table 13 is provided at the center of the base 1, and four grinding spindles 2 are provided. The grinding spindles 2 are fixed on the processing table 13, and the grinding spindles 2 are respectively located at the two ends of the processing table 13 and are symmetrically arranged. The cross moving assembly 3 is installed on the top of the base 1 and is located above the grinding spindle 2, and is used to realize the movement in the X and Y directions; the lifting assembly 7 is installed on the cross moving assembly 3, and is used to realize the movement in the Z direction; the processing seat 5 is slidably installed on the cross moving assembly 3, and is connected to the lifting assembly 7, and is used to move along the Z direction; there are four processing spindles 6, and the processing spindles 6 are installed at the two ends of the processing seat 5, and are symmetrically arranged, and the processing spindles 6 correspond to the grinding spindles 2 one by one.

[0031] The grinding spindles correspond to the machining spindles 6 one by one, and the number is N. N is 2, 4, 6 or 8, which can be set according to actual needs.

[0032] A grinding wheel is mounted on the grinding spindle 2, and a workpiece is mounted on the machining spindle 6. The grinding spindle 2 is fixed, and the machining spindle 6 can move along the X, Y and Z directions. The grinding spindle 2 drives the workpiece against 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 processing spindles 6 and grinding spindles 2 are used to process four identical workpieces synchronously, which greatly improves efficiency. The symmetrical structure can make the force uniform, thereby reducing vibration, thereby improving processing accuracy. Overall, the rigidity is increased by 4 times, the amplitude is reduced by 4 times, the accuracy is increased by 16 times, and the processing cycle speed is increased by 4 times. It can be made into vertical, horizontal, and inclined types as needed. It can be widely used in grinding inner holes, outer circles, and threads by replacing different grinding wheel tools. In addition, since one machine realizes the synchronous processing of four workpieces and adopts a symmetrical structure, the occupied area is greatly reduced.

[0034] In order to facilitate the automatic grinding of the grinding wheel, a sanding assembly 4 is also included, and the sanding assembly 4 is installed in the center of the processing table 13. Specifically, the sanding assembly 4 includes a superhard silicon carbide grinding wheel 41, a sanding spindle 42 and a sanding motor 43. The sanding spindle 42 is fixed at the center of the processing table 13, and the sanding motor 43 is connected to the sanding spindle 42. The superhard silicon carbide grinding wheel 41 is installed on the sanding spindle 42. When the grinding wheel needs to be repaired, the grinding wheel is removed from the grinding spindle 2 and installed on the processing spindle 6, and then the grinding wheel is driven by the cross moving assembly 3 and the lifting assembly 7 to rest on the superhard silicon carbide grinding wheel 41 for dressing.

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

[0036] The cross moving assembly 3 includes a longitudinal frame 34, a longitudinal driving device, a transverse frame 37 and a transverse driving device. The longitudinal frame 34 is slidably mounted on the top of the side plate 12 of the base 1 through a linear guide pair. The longitudinal driving 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 driving device. The transverse frame 37 is slidably mounted on the top of the longitudinal frame 34 through a linear guide pair; the transverse driving device is mounted on the top of the longitudinal frame 34 and connected to the transverse frame 37. The processing seat 5 is slidably mounted on the transverse frame 37. Two longitudinal driving devices are symmetrically arranged to ensure uniform force and improve processing accuracy. The longitudinal driving device includes a longitudinal motor 31, a longitudinal screw rod 32 and a longitudinal nut 33. The longitudinal motor 31 is mounted on the top of the side plate 12. The longitudinal screw rod 32 is rotatably mounted on the top of the side plate 12 through a bearing seat and is connected to the longitudinal motor 31. The longitudinal nut 33 is movably mounted on the longitudinal screw rod 32 and is connected to the longitudinal frame 34. The transverse driving device includes a transverse motor 35, a transverse screw rod 36 and a transverse nut. The transverse motor 35 is fixed to one end of the top of the longitudinal frame 34. The transverse screw rod 36 is rotatably mounted on the top plate of the longitudinal frame 34 through a bearing seat and is connected to the transverse motor 35. The transverse nut is movably mounted on the transverse screw rod 36 and is connected to the transverse frame 37.

[0037] In order to reduce weight, the transverse frame 37 is a box structure.

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

[0039] The processing seat 5 includes a fixed column 51, a first connecting column 52 and a second connecting column 53. The fixed column 51 is provided with four and is symmetrically arranged. The processing spindle 6 is installed on the fixed column 51. The first connecting column 52 and the second connecting column 53 are symmetrically provided with two and are perpendicular to each other. The two ends of the first connecting column 52 are respectively connected to the fixed column 51, and the center of the first connecting column 52 is also connected to the lifting frame 74. The two first connecting columns 52 are respectively located at the two ends of the lifting frame 74; the two ends of the second connecting column 53 are conveniently connected to the fixed column 51.

[0040] The machining spindle 6 and the grinding spindle 2 are both existing spindles, which are mature technologies and will not be described in detail here.

[0041] During operation, four identical workpieces to be processed are installed on four processing spindles 6, and then four identical grinding wheels are installed on the grinding spindle 2. Then the processing spindle 6 and the grinding spindle 2 are started, and the cross moving component 3 and the lifting component 7 are driven by the control system to drive the workpiece to automatically contact the grinding wheel for processing. Four workpieces can be processed at the same time, and the symmetrical structure can reduce vibration, thereby ensuring the processing accuracy.

[0042] The technical principle of the present invention is described above in conjunction with specific embodiments. These descriptions are only for explaining the principle of the present invention and cannot be interpreted as limiting the protection scope of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without paying creative labor, and these methods will fall within the protection scope of the claims of the present invention.

Claims

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

2. A multifunctional multi-axis CNC internal and external cylindrical and thread grinding machine according to claim 1, characterized in that: Also includes: The sanding assembly (4) is arranged at the center of the processing table (13).

3. The multifunctional multi-axis CNC internal and external cylindrical and thread grinding machine according to claim 1, characterized in that: The cross moving assembly (3) comprises: A longitudinal frame (34) slidably disposed on the top of the base (1); A longitudinal driving device, disposed on the base (1) and connected to the longitudinal frame (34); a transverse frame (37) slidably disposed on the top of the longitudinal frame (34); and The transverse driving device is arranged on the longitudinal frame (34) and connected to the transverse frame (37). The processing seat (5) is slidably arranged on the transverse frame (37).

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

5. The multifunctional multi-axis CNC internal and external cylindrical and thread grinding machine according to claim 3, characterized in that: The longitudinal drive devices are symmetrically provided with two.

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

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

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

9. The multifunctional multi-axis CNC internal and external cylindrical and thread grinding machine according to claim 7, characterized in that: The bottom plate (11) and the side plate (12) are both provided with a plurality of weight-reducing holes.

10. The multifunctional multi-axis CNC internal and external cylindrical and thread grinding machine according to claim 1, characterized in that: The processing seat (5) comprises: N fixed columns (51) for mounting the machining spindle (6); two first connecting columns (52), both ends of which are respectively connected to the fixing columns (51), and are symmetrically arranged, and are also connected to the lifting assembly (7); and Two second connecting columns (53), both ends of the second connecting columns (53) are conveniently connected to the fixing columns (51), and are symmetrically arranged, and the second connecting columns (53) are arranged perpendicular to the first connecting columns (52).

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