A five-axis linkage high-speed machining center

Abstract

The utility model discloses a five-axis linkage high-speed machining center, including: a base, a column, a Y-axis driving mechanism, an X-axis driving mechanism, a Z-axis driving mechanism, a spindle mechanism, and a turntable mechanism, wherein the Y-axis driving mechanism is installed on the base, the X-axis driving mechanism is installed on the Y-axis driving mechanism, the Z-axis driving mechanism is installed on the column, the spindle mechanism is installed on the Z-axis driving mechanism, and the turntable mechanism is installed on the X-axis driving mechanism and includes: a base, a first rotating assembly, and a second rotating assembly, wherein the first rotating assembly is installed on the base, the first rotating assembly has a first rotating end driven by a first torque motor, the second rotating assembly is connected to the first rotating end, and the second rotating assembly has a third rotating end driven by a second torque motor. The turntable mechanism is directly driven to rotate by two torque motors, and has the characteristics of no backlash, no wear, high system accuracy, fast response speed, large bearing capacity, etc., and can quickly process any surface of the workpiece except the bottom surface.

Description

Technical Field

[0001] The utility model relates to the technical field of processing equipment, in particular to a five-axis linkage high-speed processing center. Background Art

[0002] Existing machining centers are usually equipped with a cradle-type turntable structure to achieve the switching requirements of different machining surfaces of the workpiece. The existing turntable usually uses a worm gear transmission mechanism to transmit motor power to drive the turntable to drive the workpiece to rotate. The well-known disadvantages of worm gear transmission are low transmission efficiency, high heat generation, and easy wear of the tooth surface, which is not suitable for occasions requiring high-speed machining. Utility Model Content

[0003] The embodiment of the present application provides a five-axis linkage high-speed machining center, which is used to provide a machining device with large torque and capable of machining special-shaped workpieces at high speed.

[0004] The embodiment of the present application provides a five-axis linkage high-speed machining center, comprising:

[0005] Base;

[0006] A column, mounted at the rear end of the base;

[0007] A Y-axis driving mechanism, mounted on the base;

[0008] An X-axis driving mechanism, mounted on the Y-axis driving mechanism;

[0009] A Z-axis driving mechanism, mounted on the column;

[0010] A spindle mechanism, mounted on the Z-axis driving mechanism;

[0011] The turntable mechanism is installed on the X-axis driving mechanism and includes:

[0012] Pedestal;

[0013] A first rotating assembly, mounted on the base, having a first rotating end driven by a first torque motor and a second rotating end for support;

[0014] a second rotating assembly connected to the first rotating end and the second rotating end, the second rotating assembly having a third rotating end driven by a second torque motor;

[0015] A workbench is installed on the third rotating end.

[0016] The beneficial effects of the above embodiment are: the turntable mechanism is directly driven to rotate by two torque motors, and has the characteristics of no backlash, no wear, high system precision, fast response speed, large bearing capacity, etc., and can quickly process any surface of the workpiece except the bottom surface.

[0017] Based on the above embodiments, the embodiments of the present application may also be improved as follows:

[0018] In one embodiment of the present application, it further comprises: a counterweight mechanism installed on the column, the counterweight mechanism is used to balance the gravity of the spindle mechanism. The beneficial effect of this step is to facilitate improving the working efficiency of the Z-axis driving mechanism.

[0019] In one embodiment of the present application: the counterweight mechanism comprises: a pulley block installed on the column; a rope body, one end of which is connected to the main shaft mechanism, and the middle part of the rope body is wound around the pulley block; and a counterweight block connected to the other end of the rope body. Beneficial effect of this step: the gravity of the main shaft mechanism is balanced by the counterweight block.

[0020] In one of the embodiments of the present application: the turntable mechanism further includes: a first braking mechanism installed on the first rotating component, and the first braking mechanism is used to position the second rotating component.

[0021] In one of the embodiments of the present application: the turntable mechanism further includes: a second braking mechanism installed on the second rotating component, and the second braking mechanism is used to position the workbench. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the specific implementation or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0023] Figure 1 It is the first structural schematic diagram of the five-axis linkage high-speed machining center;

[0024] Figure 2 It is the second structural schematic diagram of the five-axis linkage high-speed machining center;

[0025] Figure 3 It is a structural schematic diagram of the turntable mechanism;

[0026] Figure 4 is a cross-sectional view of the turntable mechanism;

[0027] Figure 5 It is a schematic structural diagram of the second rotating component.

[0028] Among them, 1 base, 2 column, 3 Y-axis drive mechanism, 4 X-axis drive mechanism, 5 Z-axis drive mechanism, 6 base, 7 workbench, 8 first torque motor, 9 second torque motor, 10 pulley set, 11 rope body, 12 counterweight block, 13 guide rod, 14 swing spacer, 15 first connecting shaft, 16 first turntable bearing, 17 first swing seat, 18 first circular grating scale, 19 second connecting shaft, 20 first bearing, 21 second swing seat, 22 rotary spacer, 23 second turntable bearing, 24 turntable connecting plate, 25 intermediate shaft, 26 turntable encoder seat, 27 end cover, 28 second circular grating scale, 29 first push rod, 30 first elastic member, 31 first brake pad, 32 first locking plate, 33 second push rod, 34 second elastic member, 35 second brake pad, 36 second locking plate. DETAILED DESCRIPTION

[0029] In this application, unless otherwise clearly specified and limited, the terms in this application should be understood in a broad sense, such as connection can be fixed connection, detachable connection or integration, direct connection or indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of different terms in this utility model can be understood according to specific circumstances, and the scope of the specific meaning should be limited to realizing the functions of this application.

[0030] like Figure 1-4 As shown, a five-axis linkage high-speed machining center includes: a base 1, a column 2, a Y-axis drive mechanism 3, an X-axis drive mechanism 4, a Z-axis drive mechanism 5, a spindle mechanism, and a turntable mechanism. The column 2 is installed at the rear end of the base 1, the Y-axis drive mechanism 3 is installed at the front end of the base 1, the X-axis drive mechanism 4 is installed on the Y-axis drive mechanism 3 and is located in front of the Z-axis drive mechanism 5, the Z-axis drive mechanism 5 is installed on the column 2, the spindle mechanism is installed on the Z-axis drive mechanism 5, and the turntable mechanism is installed on the X-axis drive mechanism 4. The turntable mechanism includes: a base 6, a first rotating component, a second rotating component, and a workbench 7. The first rotating component is installed on the base 6. The first rotating component has a first rotating end driven by a first torque motor 8 and a second rotating end for support. The second rotating component is connected to the first rotating end and the second rotating end. The second rotating component has a third rotating end driven by a second torque motor 9, and the workbench 7 is installed on the third rotating end.

[0031] Specifically, Figure 1 As shown, the Y-axis driving mechanism 3, the X-axis driving mechanism 4, and the Z-axis driving mechanism 5 all include a motor, a lead screw and nut transmission assembly, and a guide rail and slider assembly.

[0032] Specifically, Figure 1As shown, in the Y-axis driving mechanism 3, it also includes a Y-axis slide, the motor is connected to the lead screw and installed on the base 1, the lead screw is transmission-connected with a nut, the nut is connected to the Y-axis slide, and the Y-axis slide is also slidably installed on the base 1 through a guide rail slider mechanism.

[0033] Specifically, Figure 1 As shown, in the X-axis driving mechanism 4, an X-axis slide is also included, the motor is connected to the lead screw and installed on the Y-axis slide, a nut is transmission-connected to the lead screw, the nut is connected to the X-axis slide, and the X-axis slide is also slidably installed on the Y-axis slide through a guide rail slider mechanism.

[0034] Specifically, Figure 1 As shown, the Z-axis driving mechanism 5 also includes a Z-axis slide, the motor is connected to the lead screw and installed on the column 2, the lead screw is transmission-connected with a nut, the nut is connected to the Z-axis slide, and the Z-axis slide is also slidably installed on the column 2 through a guide rail slider mechanism, and the spindle assembly is installed on the Z-axis slide.

[0035] Specifically, Figure 1 As shown, the spindle assembly includes: a spindle box, a spindle, and a motor. The spindle box is installed on the Z-axis slide, and the spindle and the motor are both installed on the spindle box. The motor drives the spindle to rotate through a transmission mechanism. The transmission mechanism can adopt belt drive or gear drive, etc. The spindle is installed with a processing tool.

[0036] Specifically, Figure 1 , 2 As shown, the five-axis linkage high-speed machining center also includes: a counterweight mechanism, which is installed on the column 2. The counterweight mechanism is used to balance the gravity of the spindle mechanism. The counterweight mechanism balances the gravity of the spindle box, the spindle and the motor. The Z-axis drive mechanism 5 can drive the spindle assembly to move through a relatively small external force, thereby improving the working efficiency of the Z-axis drive mechanism 5.

[0037] Specifically, Figure 1 , 2 As shown, the counterweight mechanism includes: a pulley block 10, a rope body 11, and a counterweight block 12. The pulley block 10 is installed on the column 2, and one end of the rope body 11 is connected to the spindle box. The pulley block 10 includes a plurality of fixed pulleys installed on the top of the column 2. The middle part of the rope body 11 passes over the corresponding fixed pulleys and is connected to the counterweight block 12. The rope body 11 can be made of a belt or a wire rope, etc. The counterweight block 12 is inserted into the space vertically opened in the middle part of the column 2. A guide rod 13 is also arranged in the middle part of the column 2. A sliding sleeve is connected to the middle part of the counterweight block 12, and the sliding sleeve is arranged on the outside of the guide rod 13, so as to improve the stability of the counterweight block 12 along the vertical movement.

[0038] Specifically, the first rotating assembly includes a first rotating part and a second rotating part, and the first torque motor 8 is disposed in the first rotating part.

[0039] Specifically, Figure 4 As shown, the first rotating part includes: a swinging spacer sleeve 14, a first connecting shaft 15, a first turntable bearing 16, a first swing seat 17, and a first circular grating scale 18. The swinging spacer sleeve 14 is installed on the base 6, and the first torque motor 8 is installed in the swinging spacer sleeve 14. The rotor of the first torque motor 8 is connected to the first connecting shaft 15, and the first connecting shaft 15 is rotatably connected to the swinging spacer sleeve 14 through the first turntable bearing 16. The first circular grating scale 18 is installed at one end of the first connecting shaft 15, and the other end is connected to the first swing seat 17. The first swing seat 17 is the first rotating end.

[0040] Specifically, Figure 4 As shown, the second rotating part includes: a second connecting shaft 19, a first bearing 20, and a second swing seat 21. The second connecting shaft 19 is rotatably connected to the base 6 through the first bearing 20. The first bearing 20 adopts a double-row cylindrical roller bearing. The second swing seat 21 is installed on the second connecting shaft 19, and the second swing seat 21 is the second rotating end.

[0041] Specifically, Figure 4 As shown, the rotary assembly includes: a rotary spacer sleeve 22, a second turntable bearing 23, a turntable connecting disk 24, an intermediate shaft 25, a turntable encoder seat 26, an end cover 27, and a second circular grating scale 28. The rotary spacer sleeve 22 is respectively connected to the first swing seat 17 and the second swing seat 21, and the end cover 27 is connected to the other side of the rotary spacer sleeve 22 relative to the workbench 7. The second torque motor 9 is installed in the space formed by the rotary spacer sleeve 22 and the end cover 27. The rotor of the second torque motor 9 is connected to the turntable connecting disk 24, and the connecting disk is rotatably connected to the rotary spacer sleeve 22 through the second turntable bearing 23. The turntable encoder seat 26 is arranged on the inner side of the rotor of the second torque motor 9 and is connected to the end cover 27. The workbench 7 is installed on the turntable connecting disk 24. The intermediate shaft 25 is installed on the back of the workbench 7 and is equipped with the second circular grating scale 28. The intermediate shaft 25 is rotatably connected to the turntable encoder seat 26 through the second bearing.

[0042] Specifically, Figure 4 As shown, the turntable mechanism also includes: a first braking mechanism, which is installed on the first rotating assembly and is used to position the second rotating assembly.

[0043] Specifically, Figure 4As shown, the first braking mechanism includes: a first push rod 29, a first elastic member 30, a first brake pad 31, and a first locking disk 32. The base 6 is connected to a cover body, and the cover body is provided with a plurality of first chambers on the same circumference along the rotation axis of the second connecting shaft 19. The first push rod 29 is slidably arranged in the first chamber, and the first push rod 29 divides the first chamber into a first chamber A and a first chamber B. The first chamber A is connected to the hydraulic system through a pipeline, and oil is supplied to the first chamber A through the hydraulic system to control the position of the first push rod 29. The first chamber B is provided with a first push rod 29. An elastic member 30, the first elastic member 30 adopts a plurality of stacked disc springs mounted on the outside of the first push rod 29, the first brake pad 31 is an annular structure and is connected to the end of the second connecting shaft 19, the first locking plate 32 is opposite to the first brake pad 31 and is installed on the base 6, the first cavity A is filled with oil, driving the first push rod 29 to push the first brake pad 31 to press the first locking plate 32, so that the second connecting shaft 19 stops rotating, and when the hydraulic oil in the first cavity A is discharged, the first elastic member 30 pushes the first push rod 29 to retract, thereby releasing the locking state of the second connecting shaft 19.

[0044] Specifically, Figure 4 , 5 As shown, the turntable mechanism further includes: a second braking mechanism, which is installed on the second rotating assembly and is used to position the workbench 7.

[0045] Specifically, Figure 5 As shown in the figure, the second braking mechanism includes: a second push rod 33, a second elastic member 34, a second brake pad 35, and a second locking disk 36. The turntable encoder seat 26 is provided with a plurality of second chambers on the same circumference along the rotation axis of the intermediate shaft 25. A second push rod 33 is slidably arranged in the second chamber. The second push rod 33 divides the second chamber into a second chamber A and a second chamber B. The second chamber A is connected to the hydraulic system through a pipeline. The second chamber A is supplied with oil through the hydraulic system to control the position of the second push rod 33. The second chamber B is provided with a The second elastic member 34 is made of multiple sets of stacked disc springs mounted on the outside of the second push rod 33. The second brake pad 35 is an annular structure and is connected to the turntable connecting plate 24. The second locking plate 36 is opposite to the second brake pad 35 and is installed on the intermediate shaft 25. The second cavity A enters oil, driving the second push rod 33 to push the second brake pad 35 to press the second locking plate 36, so that the intermediate shaft 25 stops rotating. When the hydraulic oil in the second cavity A is discharged, the second elastic member 34 pushes the second push rod 33 to retract, thereby releasing the locking state of the intermediate shaft 25.

[0046] This product relies on the rotation of the first rotating component to rotate around the Y axis to become the A axis, and the worktable 7 can rotate around the Z axis to become the B axis. Through the combination of the A axis and the B axis, the workpiece fixed on the worktable 7, except for the bottom surface, the other five surfaces can be processed by the vertical spindle, so that the workpiece can be subdivided into any angle, and inclined surfaces, inclined holes, etc. can be processed. The A axis and the B axis are linked with the three linear axes of X, Y, and Z to process complex spatial curved surfaces. At the same time, the two torque motors are combined to directly drive the turntable mechanism to rotate, which has the characteristics of no backlash, no wear, high system precision, fast response speed, and large bearing capacity.

[0047] The above are only embodiments of the utility model. The common sense such as the known specific structures and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field are aware of all the common technical knowledge in the technical field to which the utility model belongs before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement the scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for the ordinary technicians in the relevant field to implement this application. It should be pointed out that for the technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A five-axis linkage high-speed machining center, characterized in that: include: Base; A column, mounted at the rear end of the base; A Y-axis driving mechanism, mounted on the base; An X-axis driving mechanism, mounted on the Y-axis driving mechanism; A Z-axis driving mechanism, mounted on the column; A spindle mechanism, mounted on the Z-axis driving mechanism; The turntable mechanism is installed on the X-axis driving mechanism and includes: Pedestal; A first rotating assembly, mounted on the base, having a first rotating end driven by a first torque motor and a second rotating end for support; a second rotating assembly connected to the first rotating end and the second rotating end, the second rotating assembly having a third rotating end driven by a second torque motor; A workbench is installed on the third rotating end.

2. The five-axis linkage high-speed machining center according to claim 1 is characterized in that: Also includes: A counterweight mechanism is installed on the column, and the counterweight mechanism is used to balance the gravity of the main shaft mechanism.

3. The five-axis linkage high-speed machining center according to claim 2 is characterized in that: The counterweight mechanism comprises: A pulley block is mounted on the column; A rope body, one end of which is connected to the spindle mechanism, and the middle part of the rope body is wound around the pulley block; A counterweight block is connected to the other end of the rope body.

4. The five-axis linkage high-speed machining center according to claim 1 is characterized in that: The turntable mechanism also includes: The first braking mechanism is installed on the first rotating assembly, and the first braking mechanism is used to position the second rotating assembly.

5. The five-axis linkage high-speed machining center according to claim 1 is characterized in that: The turntable mechanism also includes: The second braking mechanism is installed on the second rotating assembly, and the second braking mechanism is used to position the workbench.

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