Double-B-shaft structure of ultra-precision machine tool

Abstract

The utility model discloses a double-B-shaft structure of an ultra-precision machine tool. The double-B-shaft structure comprises a stand column, a positive shaft B-shaft structure and an auxiliary shaft B-shaft structure. The stand column is installed on a machine tool body in the using state. The positive-axis B-axis structure is mounted on one side, close to the auxiliary main shaft of the machine tool, of the stand column and can horizontally and vertically slide on the stand column; the auxiliary shaft B shaft structure is installed on the side, close to a machine tool auxiliary main shaft, of a machine tool body in the using state and can vertically slide relative to the machine tool body. Wherein the cutter on the main shaft B shaft structure can machine a workpiece clamped by a machine tool main shaft or a machine tool auxiliary shaft, and the cutter on the auxiliary shaft B shaft structure can machine a workpiece clamped by the machine tool auxiliary shaft. Two workpieces can be machined at the same time, the machining efficiency of the workpieces is improved, the clamping and positioning times of the workpieces are reduced, and the machining precision of the workpieces is improved.

Description

Technical Field

[0001] The utility model relates to a double B-axis structure of an ultra-precision machine tool, belonging to the technical field of machine tools. Background Art

[0002] The tool used for processing the workpiece on the machine tool is installed on the column between the main spindle and the sub-spindle of the machine tool. The tool can move in the horizontal and vertical directions on the column to process the workpiece. The part of the column where the tool is installed is called the B-axis structure. Only one B-axis structure is set on the column of the existing machine tool. The workpieces clamped by the main spindle and the sub-spindle of the machine tool are processed by the tool on the same B-axis structure. Therefore, the B-axis structure cannot process the workpiece clamped on the main spindle of the machine tool at the same time. Some workpieces need to be processed at both ends. The main spindle of the machine tool clamps the workpiece , after the B-axis structure processes one end of it, it is cut by the B-axis structure, and then the cut workpiece is clamped on the machine tool sub-spindle, and the other end is processed by the B-axis structure. In this case, only one of the machine tool main spindle and the machine tool sub-spindle processes the workpiece, and the other is in a stopped state. Therefore, the machine tool of the prior art can only process one workpiece at the same time, and because the workpiece needs to be cut and clamped after one end is processed, the secondary clamping of the workpiece also takes time, and the workpiece after the secondary clamping needs to be positioned, which also makes it difficult to effectively improve the processing accuracy of the workpiece. Summary of the invention

[0003] The utility model aims to provide a double B-axis structure of an ultra-precision machine tool, so as to solve the technical defect of low processing efficiency of workpieces that need to be processed at both ends in the prior art.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is: a double B-axis structure of an ultra-precision machine tool, including a column, a main axis B-axis structure and a secondary axis B-axis structure; the column is installed on the machine tool bed when in use; the main axis B-axis structure is installed on the side of the column close to the secondary spindle of the machine tool, and can slide horizontally and vertically on the column; the secondary axis B-axis structure is installed on the side of the machine tool bed close to the secondary spindle of the machine tool when in use, and can slide vertically relative to the machine tool bed; wherein the tool on the main axis B-axis structure can process the workpiece clamped by the main spindle or the secondary spindle of the machine tool, and the tool on the secondary axis B-axis structure can process the workpiece clamped by the secondary spindle of the machine tool. The utility model arranges a positive axis B-axis structure on the column, and arranges a secondary axis B-axis structure on the machine tool bed; after the workpiece clamped by the positive spindle of the machine tool is processed on one end by the positive axis B-axis structure, the secondary spindle of the machine tool takes over and clamps the processed end of the workpiece, and then the workpiece is cut off by the tool on the positive axis B-axis structure; the secondary spindle of the machine tool clamps the workpiece and moves it to the secondary axis B-axis structure, and the secondary axis B-axis structure processes the other end of the workpiece; at the same time, the positive axis B-axis structure processes one end of the workpiece clamped by the positive spindle of the machine tool, thus reducing the clamping of the workpiece, and can process two workpieces at the same time, thereby improving the processing efficiency of the workpiece; and since the clamping and positioning of the workpiece processing process is reduced, the processing accuracy of the workpiece is improved.

[0005] As a further improvement of the present utility model, the positive axis B axis structure includes a first side milling seat A, a first side milling seat B, a first rotary drive motor, a first side milling drive motor and a first side milling power head A; the first side milling seat A is slidably mounted on the column and can slide horizontally and vertically on the column; the top of the first side milling seat B is rotationally connected to the first side milling seat A; the first rotary drive motor is mounted on the first side milling seat A, and is used to drive the first side milling seat B to rotate relative to the first side milling seat A; the first side milling drive motor is mounted on the first side milling seat A; the number of the first side milling power head A is more than one, and is mounted on the first side milling seat B in the horizontal direction, the first side milling power head A is connected to the first side milling drive motor through a gear transmission structure, and is driven to rotate by the first side milling drive motor, and is used to perform side milling processing on the workpiece or drill holes on the workpiece. The positive axis B axis structure in the present utility model can perform side milling processing and drilling processing on the workpiece, so that the workpiece can be processed in various forms.

[0006] As a further improvement of the utility model, the secondary shaft B axis structure includes a secondary shaft seat, a second side milling seat A, a second side milling seat B, a second rotary drive motor, a second side milling drive motor and a second side milling power head A; the secondary shaft seat is used to be installed on the machine tool bed in the use state; the second side milling seat A is slidably installed on the secondary shaft seat and can slide vertically on the secondary shaft seat; the top of the second side milling seat B is rotatably connected with the second side milling seat A; the second rotary drive motor is installed on the second side milling seat A, and is used to drive the second side milling seat B to rotate relative to the second side milling seat A; the second side milling drive motor is installed on the second side milling seat A; the number of the second side milling power head A is more than one, and is installed on the second side milling seat B in the horizontal direction, and the second side milling power head A is connected to the second side milling drive motor through a gear transmission structure, and is driven to rotate by the second side milling drive motor, and is used to perform side milling processing on the workpiece or drill holes on the workpiece. The secondary shaft B axis structure in the utility model can perform side milling processing and drilling processing on the workpiece, so that the workpiece can be processed in various forms.

[0007] As a further improvement of the present invention, the main axis B axis structure also includes a first side milling power head B, the number of the first side milling power head B is more than one, and is installed on the first side milling seat A in the vertical direction, the first side milling power head B is connected to the first side milling drive motor by a gear transmission mechanism, and is driven to rotate by the first side milling drive motor for side milling processing of the workpiece; the secondary axis B axis structure also includes a second side milling power head B, the number of the second side milling power head B is more than one, and is installed on the second side milling seat A in the vertical direction, the second side milling power head B is connected to the second side milling drive motor by a gear transmission mechanism, and is driven to rotate by the second side milling drive motor for side milling processing of the workpiece. The main axis B axis structure of the present invention is provided with a first side milling power head B, which can further perform side milling processing on the workpiece without adjusting the first side milling power head A, and the secondary axis B axis structure is provided with a second side milling power head B, which can further perform side milling processing on the workpiece without adjusting the second side milling power head A.

[0008] As a further improvement of the utility model, the main axis B axis structure includes a first slide plate A and a first cutter row; the first slide plate A is slidably mounted on the column and can slide horizontally and vertically on the column, and the first side milling seat A is fixed on the first slide plate A; the first cutter row is used for turning the workpiece, and the first cutter row is mounted on the first slide plate A, and its cutting edge is set toward the workpiece; the secondary axis B axis structure also includes a second slide plate A and a second cutter row, the second slide plate A is slidably mounted on the secondary axis seat and can slide vertically on the secondary axis seat, and the second side milling seat A is fixed on the second slide plate A; the second cutter row is mounted on the second side milling seat A, and its cutting edge is set toward the direction of the workpiece. The first and second cutter rows in the utility model can turn the workpiece, increasing the processing function of the utility model on the workpiece.

[0009] As a further improvement of the utility model, the secondary axis B axis structure also includes an end milling power head, which is installed on the second side milling seat A and is arranged in the direction of the machine tool secondary spindle, and is used to perform milling processing on the end face of the workpiece when in use. The utility model can perform end milling processing on the workpiece by arranging the end milling power head.

[0010] As a further improvement of the utility model, the secondary axis B axis structure also includes a boring handle, the number of boring handles is multiple, the boring handle is installed on the second side milling seat A, and is arranged in parallel with the end milling power head, and is used to perform boring processing on the workpiece in the use state. The utility model increases the boring function of the machine tool by arranging the boring handle.

[0011] As a further improvement of the present utility model, the main axis B axis structure also includes a first hollow reducer, which is installed on the first side milling seat A, and the top of the first side milling seat B is rotatably connected to the first hollow reducer. The first rotary drive motor is installed on the first hollow reducer to drive the first side milling seat B to rotate. The first hollow reducer is provided with a first connecting shaft A running through the upper and lower parts thereof, which is used to connect the first side milling drive motor and the first side milling power head A, and the first connecting shaft A can rotate relative to the first hollow reducer; the secondary axis B axis structure also includes a second hollow reducer, which is installed on the second side milling seat A, and the top of the second side milling seat B is rotatably connected to the second hollow reducer. The second rotary drive motor is installed on the second hollow reducer to drive the second side milling seat B to rotate. The second hollow reducer is provided with a second connecting shaft A running through the upper and lower parts thereof, which is used to connect the second side milling drive motor and the second side milling power head A, and the second connecting shaft A can rotate relative to the second hollow reducer. The utility model facilitates the rotational connection between the first side milling seat B and the first side milling seat A and the rotational connection between the second side milling seat B and the second side milling seat A by arranging the first hollow reducer and the second hollow reducer.

[0012] As a further improvement of the utility model, the positive axis B axis structure also includes a slide plate B, a horizontal drive motor and a vertical drive motor; the slide plate B is slidably mounted on the column, and the first slide plate A is slidably mounted on the slide plate B; the horizontal drive motor is mounted on the column, and is used to drive the slide plate B to slide horizontally on the column; the first vertical drive motor is mounted on the slide plate B, and is used to drive the first slide plate A to slide vertically on the slide plate B. The utility model sets the slide plate B, and the horizontal sliding of the slide plate B on the column causes the first slide plate A to slide horizontally relative to the column, and the vertical sliding of the first slide plate A relative to the slide plate B causes the first slide plate A to slide vertically relative to the column, thereby causing other components mounted on the first slide plate A to move horizontally and vertically relative to the column.

[0013] As a further improvement of the utility model, the positive axis B axis structure also includes a horizontal guide rail, a horizontal slider, a first vertical guide rail, a horizontal lead screw of the first vertical slider and a first vertical lead screw; the horizontal guide rail is installed on the column along the horizontal direction; the horizontal slider is installed on the skateboard B, the horizontal slider cooperates with the horizontal guide rail and can slide horizontally on the horizontal guide rail; the first vertical guide rail is installed on the skateboard B along the vertical direction; the first vertical slider is installed on the first skateboard A, the first vertical slider cooperates with the first vertical guide rail and can slide vertically on the first vertical guide rail; one end of the horizontal lead screw is connected to the horizontal drive motor, driven to rotate by the horizontal drive motor, the horizontal lead screw cooperates with the skateboard B thread, and the rotation of the horizontal lead screw is used to drive the skateboard B to slide horizontally; one end of the first vertical lead screw is connected to the first vertical drive motor, driven to rotate by the first vertical drive motor, the first vertical lead screw cooperates with the first skateboard A thread, and the rotation of the first vertical lead screw is used to drive the first skateboard A to slide vertically. The utility model enables the slide plate B to slide horizontally on the column through the sliding cooperation between the horizontal guide rail and the horizontal slider, and enables the first slide plate A to slide vertically on the slide plate B through the sliding cooperation between the first vertical guide rail and the first vertical slider. The utility model converts the rotation of the lead screw into the linear motion of the slide plate through the thread cooperation between the lead screw and the slide plate, thereby enabling the first slide plate A to move vertically and the slide plate B to move horizontally.

[0014] In summary, the beneficial effects of the utility model are as follows: the utility model can process two workpieces at the same time, thereby improving the processing efficiency of the workpieces, reducing the number of clamping and positioning times of the workpieces, and improving the processing accuracy of the workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0016] Figure 2 It is an exploded schematic diagram of the utility model.

[0017] Figure 3 It is a three-dimensional structural schematic diagram of the utility model from another angle.

[0018] Among them: 1. Column; 2. Main axis B axis structure; 3. Machine tool sub-spindle; 4. Sub-axis B axis structure; 5. Machine tool main spindle; 6. First side milling seat A; 7. First side milling seat B; 8. First rotary drive motor; 9. First side milling drive motor; 10. First side milling power head A; 11. First side milling power head B; 12. First slide A; 13. First tool row; 14. End milling power head; 15. Boring tool handle; 16. First hollow reducer; 17. Slide B; 18. Horizontal guide rail; 19. The first vertical guide rail; 20, the first vertical slider; 21, the horizontal screw; 22, the first vertical screw; 23, the secondary shaft seat; 24, the second side milling seat A; 25, the second side milling seat B; 26, the second rotary drive motor; 27, the second side milling drive motor; 28, the second side milling power head A; 29, the second side milling power head B; 30, the second slide plate A; 31, the second tool row; 32, the second hollow reducer; 33, the second vertical guide rail; 34, the second vertical slider; 35, the second vertical screw. DETAILED DESCRIPTION

[0019] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0020] like Figures 1 to 3The double B-axis structure of the ultra-precision machine tool shown in the figure comprises a column 1, a positive axis B-axis structure 2 and a secondary axis B-axis structure 4. The column 1 is installed on the machine tool bed when in use. The bottom of the column 1 in the utility model is detachably installed with the machine tool bed by multiple bolts. The secondary spindle 3 and the positive spindle 5 of the machine tool are respectively located on both sides of the column 1. The positive axis B-axis structure 2 is installed on the column 1 on a side close to the secondary spindle 3 of the machine tool, and can slide horizontally and vertically on the column 1. The secondary axis B-axis structure 4 is installed on the machine tool bed close to the secondary spindle 3 of the machine tool. The positive axis B axis structure 2 and the secondary axis B axis structure 4 in the utility model are both installed on the side close to the secondary spindle 3 of the machine tool, wherein the positive axis B axis structure 2 and the secondary axis B axis structure 4 are respectively located on the left and right sides of a movable guide sleeve (not shown in the figure) on the column 1 for the workpiece to pass through, and the tool on the positive axis B axis structure 2 can process the workpiece clamped by the positive spindle 5 or the secondary spindle 3 of the machine tool, and the tool on the secondary axis B axis structure 4 can process the workpiece clamped by the secondary spindle 3 of the machine tool. When the utility model is in use, the workpiece clamped by the main spindle 5 of the machine tool passes through the movable guide sleeve (not shown in the figure) on the column 1 and extends to one side of the secondary spindle 3 of the machine tool, and the end of the workpiece is processed by the main axis B axis structure 2. After one end of the workpiece is processed, the machine tool secondary spindle 3 can clamp the processed end of the workpiece, and then the workpiece is cut off by the tool on the main axis B axis structure 2, and the machine tool secondary spindle 3 is driven toward one side of the secondary axis B axis structure 4, and the other end of the workpiece is processed by the secondary axis B axis structure 4. At the same time, the main axis B axis structure 2 can Continue to process one end of the workpiece clamped by the main spindle 5 of the machine tool, thereby improving the processing efficiency of the workpiece, and the sub-spindle 3 of the machine tool takes over the tool processed and cut by the main spindle 5 of the machine tool and continues to process. Compared with the prior art, the workpiece with one end processed is completely cut off first, and then clamped for processing, the utility model reduces the clamping time, further improves the processing efficiency of the workpiece, and improves the processing accuracy of the workpiece. Among them, the installation structure of the sub-spindle 3 and the main spindle 5 of the machine tool and the machine tool bed is the prior art, and the utility model will not be described in detail.

[0021] like Figures 1 to 3As shown, the positive axis B-axis structure 2 in the utility model includes a first side milling seat A6, a first side milling seat B7, a first rotation drive motor 8, a first side milling drive motor 9 and a first side milling power head A10. The first side milling seat A6 is slidably mounted on the column 1 and can slide horizontally and vertically on the column 1. The top of the first side milling seat B7 is rotationally connected to the first side milling seat A6. The first rotation drive motor 8 is mounted on the first side milling seat A6 to drive the first side milling seat B7 to rotate relative to the first side milling seat A6. The first side milling drive motor 9 in the utility model is mounted on the top of the first side milling seat A6. The number of the first side milling power head A10 is more than one. The specific number of the first side milling power head A10 It can be set according to actual needs, such as setting three or four first side milling power heads A10, and the first side milling power heads A10 are installed on the first side milling seat B7 along the horizontal direction. The first side milling power head A10 rotates synchronously with the rotation of the first side milling seat B7 to adjust the angle between the length direction of the first side milling power head A10 and the length direction of the workpiece. The first side milling power head A10 in the utility model is connected to the first side milling drive motor 9 through a gear transmission structure arranged in the first side milling seat A6, and is driven to rotate by the first side milling drive motor 9 for side milling of the workpiece or drilling on the workpiece. The specific gear transmission structure is a prior art and is not described in detail in the utility model. The secondary shaft B axis structure 4 in the utility model includes a secondary shaft seat 23, a second side milling seat A24, a second side milling seat B25, a second rotary drive motor 26, a second side milling drive motor 27 and a second side milling power head A28. The secondary shaft seat 23 is used to be installed on the machine tool bed when in use. The bottom of the secondary shaft seat 23 in the utility model is detachably installed with the machine tool bed by multiple bolts. The second side milling seat A24 is slidably installed on the secondary shaft seat 23 and can slide vertically on the secondary shaft seat 23. The top of the second side milling seat B25 is rotatably connected to the second side milling seat A24. The second rotary drive motor 26 is installed on the second side milling seat A24 for driving the second side milling seat B25 to rotate relative to the second side milling seat A24. The second side milling drive motor 27 is installed on the second side milling seat A24, the number of the second side milling power head A28 is more than one, and it is installed on the second side milling seat B25 in the horizontal direction. The second side milling power head A28 is connected to the second side milling drive motor 27 through a gear transmission structure, and is driven to rotate by the second side milling drive motor 27, and is used for side milling of the workpiece or drilling on the workpiece. The second side milling seat A24, the second side milling seat B25, the second rotation drive motor 26, the second side milling drive motor 27 and the second side milling power head A28 of the secondary axis B axis structure 4 in the utility model are the same as the side milling seat A6, the side milling seat B7, the rotation drive motor 8, the side milling drive motor 9 and the side milling power head A10 of the main axis B axis structure 2, and are not repeated in the utility model.

[0022] like Figures 1 to 3As shown, the positive axis B-axis structure 2 in the utility model is provided with a first side milling power head B11, the number of the first side milling power head B11 is more than one, and is installed on the first side milling seat A6 along the vertical direction. The number of the first side milling power head B11 in the utility model can be set according to actual needs. For example, two first side milling power heads B11 can be set. The first side milling power head B11 adopts a gear transmission mechanism arranged in the first side milling seat A6 to be connected to the first side milling drive motor 9, and is driven to rotate by the first side milling drive motor 9 for side milling processing of the workpiece. The gear transmission method is also a prior art and is not described in detail in the utility model. The positive axis B axis structure 2 in the utility model is provided with a first slide plate A12 and a first tool row 13. The first slide plate A12 is slidably installed on the column 1 and can slide horizontally and vertically on the column 1. Through the horizontal and vertical sliding of the first slide plate A12 on the column 1, the positive axis B axis structure 2 can slide horizontally and vertically on the column 1. The first side milling seat A6 is fixedly installed on the first slide plate A12. The first tool row 13 is used for turning the workpiece. In the utility model, the first tool row 13 is installed on the side of the first slide plate A12 close to the secondary axis B axis structure 4, and the blade of the first tool row 13 is set downward. When the first tool row 13 turns the workpiece, the workpiece is located below the first tool row 13. The secondary shaft B-axis structure 4 in the utility model is provided with a second side milling power head B29, a second slide plate A30 and a second cutter row 31. The number of the second side milling power head B29 is more than one, and they are installed on the second side milling seat A24 along the vertical direction. The specific details are the same as the first side milling power head B11, and the utility model will not repeat them. The second side milling power head B29 is connected to the second side milling drive motor 27 by a gear transmission mechanism, and is driven to rotate by the second side milling drive motor 27 for side milling of the workpiece. The second slide plate A30 is slidably installed on the secondary shaft seat 23 and can slide vertically on the secondary shaft seat 23. The second side milling seat A24 is fixed on the second slide plate A30, and the second cutter row 31 is installed on the second side milling seat A24, and its blade is set in the direction of the positive shaft B-axis structure 2.

[0023] like Figures 1 to 3As shown, the secondary axis B-axis structure 4 in the utility model is provided with an end milling power head 14 and a boring tool holder 15. The end milling power head 14 is installed on the second side milling seat A24 of the secondary axis B-axis structure 4 and is arranged in the direction of the secondary spindle 3 of the machine tool, and is used for milling the end face of the workpiece when in use. The number of boring tool holders 15 is multiple. For example, the utility model is provided with three boring tool holders 15. The boring tool holders 15 are installed on the second side milling seat A24 and are arranged parallel to the end milling power head 14, and are used for boring the workpiece when in use. The end milling power head 14 in the utility model is installed below the first tool row 13, and the boring tool holder 15 is located below the end milling power head 14, wherein the boring tool holder 15 itself does not require power and can be directly inserted into the corresponding mounting hole at the lower part of the first side milling seat A6.

[0024] like Figures 1 to 3 As shown, the positive axis B axis structure 2 in the utility model is provided with a first hollow reducer 16, and the first hollow reducer 16 is installed on the first side milling seat A6, and the top of the first side milling seat B7 is rotatably connected to the first hollow reducer 16, and the first rotary drive motor 8 is installed on the first hollow reducer 16 to drive the first side milling seat B7 to rotate. The first hollow reducer 16 is provided with a first connecting shaft A (not shown in the figure) running through the upper and lower parts thereof, which is used to connect the first side milling drive motor 9 and the first side milling power head A10, and the first connecting shaft A can rotate relative to the first hollow reducer 16, wherein the mounting structure of the first hollow reducer 16 and the first side milling seat A6 and the first side milling seat B7, the mounting structure of the first rotary drive motor 8 and the first hollow reducer 16, the mounting structure of the first connecting shaft A and the gear transmission structure are all prior art, and the details can be referred to the authorization announcement. The Chinese utility model patent No. is CN219151589U, which is not described in detail in the present utility model. The secondary shaft B shaft structure 4 in the present utility model is provided with a second hollow reducer 32, and the second hollow reducer 32 is installed on the second side milling seat A24. The top of the second side milling seat B25 is rotatably connected to the second hollow reducer 32. The second rotary drive motor 26 is installed on the second hollow reducer 32 to drive the second side milling seat B25 to rotate. The second hollow reducer 32 is provided with a second connecting shaft A (not shown in the figure) running through the upper and lower parts thereof, which is used to connect the second side milling drive motor 27 and the second side milling power head A28. The second connecting shaft A can rotate relative to the second hollow reducer 3). The structure of the second hollow reducer 32 itself and its installation structure in the present utility model are the same as those of the first hollow reducer 16. For details, please refer to the first hollow reducer 16.

[0025] like Figures 1 to 3As shown, in order to realize the horizontal and vertical sliding of the skateboard A12 on the column 1, the main axis B-axis structure 2 in the utility model is provided with a skateboard B17, a horizontal drive motor (not shown in the figure) and a first vertical drive motor (not shown in the figure), wherein the skateboard B17 is slidably installed on the column 1, the first skateboard A12 is slidably set on the skateboard B17, the horizontal drive motor is detachably installed on the column 1 through the motor seat A (not shown in the figure), and is used to drive the skateboard B17 to slide horizontally on the column 1, and the first vertical drive motor is detachably installed on the skateboard B17 through the motor seat B (not shown in the figure), and is used to drive the first skateboard A12 to slide vertically on the skateboard B17. The utility model optimally sets the positive axis B axis structure 2 to include a horizontal guide rail 18, a horizontal slider (not shown in the figure), a first vertical guide rail 19 and a first vertical slider 20, wherein there are two horizontal guide rails 18, both of which are detachably mounted on the column 1 along the horizontal direction by bolts, and the horizontal slider is detachably mounted on the slide plate B17 by bolts, and the horizontal slider is respectively matched with the two horizontal guide rails 18 and can slide horizontally on the horizontal guide rails 18, and the slide plate B17 slides horizontally relative to the column 1 by the sliding of the horizontal slider on the horizontal guide rail 18, and the installation The slide plate A12 on the slide plate B17 moves horizontally synchronously therewith. There are two first vertical guide rails 19. Both first vertical guide rails 19 are detachably mounted on the side of the slide plate B17 away from the horizontal slider along the vertical direction by bolts. The first vertical slider 20 is detachably mounted on the first slide plate A12 by bolts. The first vertical slider 20 cooperates with the first vertical guide rail 19 and can slide vertically on the first vertical guide rail 19. The first slide plate A12 slides vertically relative to the slide plate B17 by the vertical sliding of the first vertical slider 20 on the first vertical guide rail 19. The second slide plate A30 of the secondary shaft B shaft structure 4 in the utility model is slidably mounted on the secondary shaft seat 23 by the second vertical slider 34 cooperating with the second vertical guide rail 33.

[0026] like Figures 1 to 3As shown, the positive axis B axis structure 2 in the utility model is provided with a horizontal lead screw 21 and a first vertical lead screw 22, one end of the horizontal lead screw 21 is connected to the horizontal drive motor, and is driven to rotate by the horizontal drive motor, the horizontal lead screw 21 is located between the two horizontal guide rails 18, and is parallel to the two horizontal guide rails 18, the horizontal lead screw 21 is threadedly matched with the slide plate B17, and the utility model can fix a connecting block B (not shown in the figure) on the slide plate B17 at a position between the two horizontal guide rails 18, wherein the horizontal lead screw 21 passes through the connecting block B and is threadedly matched with the connecting block B, and the horizontal lead screw 21 rotates to drive the slide plate B17 Horizontally sliding, one end of the first vertical screw 22 is connected to the first vertical drive motor and is driven to rotate by the first vertical drive motor. The first vertical screw 22 is threadedly matched with the first skateboard A12. In the utility model, a first connecting block A (not shown in the figure) is fixed on the side of the first skateboard A12 close to the skateboard B17. The first vertical screw 22 passes through the first connecting block A and is threadedly matched with the first connecting block A. The first vertical screw 22 in the utility model is located between the two first vertical guide rails 19 and is parallel to the two first vertical guide rails 19. The rotation of the first vertical screw 22 is used to drive the first skateboard A12 to slide vertically. A second connecting block A (not shown in the figure) is fixed on the second slide plate A30 of the secondary shaft B shaft structure 4 in the utility model, and a second vertical lead screw 35 passing through the connecting block A and threadedly matched with the connecting block A is rotatably installed on the secondary shaft seat 23 in the vertical direction. The second slide plate A30 is driven by the second vertical lead screw 35 to slide vertically on the secondary shaft seat 23, and the top end of the second vertical lead screw 35 is connected to the output shaft of a second vertical drive motor (not shown in the figure) installed on the top of the secondary shaft seat 23, and is driven to rotate by the second vertical drive motor.

[0027] The parts not specifically described in the above description are all prior art, or can be implemented by prior art. Moreover, the specific implementation cases described in the present invention are only preferred implementation cases of the present invention, and are not used to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made according to the content of the patent scope of the present invention should be regarded as the technical scope of the present invention.

Claims

1. A double B-axis structure of an ultra-precision machine tool, characterized in that: include A column (1), which is installed on the machine tool bed when in use; A positive B-axis structure (2), which is mounted on a side of the column (1) close to the machine tool sub-spindle (3) and can slide horizontally and vertically on the column (1); A secondary spindle B-axis structure (4), which is installed on a side of the machine tool bed close to the secondary spindle (3) of the machine tool when in use, and can slide vertically relative to the machine tool bed; The tool on the positive axis B axis structure (2) can process the workpiece clamped by the positive spindle (5) or the secondary spindle (3) of the machine tool, and the tool on the secondary axis B axis structure (4) can process the workpiece clamped by the secondary spindle (3) of the machine tool.

2. The dual B-axis structure of the ultra-precision machine tool according to claim 1, characterized in that: The positive axis B axis structure (2) includes A first side milling seat A (6), the first side milling seat A (6) is slidably mounted on the column (1) and can slide horizontally and vertically on the column (1); A first side milling seat B (7), the top of which is rotatably connected to the first side milling seat A (6); A first rotary drive motor (8), the first rotary drive motor (8) being mounted on the first side milling seat A (6) and used for driving the first side milling seat B (7) to rotate relative to the first side milling seat A (6); A first side milling drive motor (9), the first side milling drive motor (9) being mounted on a first side milling seat A (6); A first side milling power head A (10), the number of which is more than one, and which is installed on a first side milling seat B (7) in a horizontal direction. The first side milling power head A (10) is connected to a first side milling drive motor (9) through a gear transmission structure, and is driven to rotate by the first side milling drive motor (9) for side milling a workpiece or drilling a hole on the workpiece.

3. The dual B-axis structure of the ultra-precision machine tool according to claim 2, characterized in that: The secondary shaft B shaft structure (4) includes A secondary shaft seat (23), the secondary shaft seat (23) is used to be mounted on the machine tool bed in the use state; A second side milling seat A (24), the second side milling seat A (24) is slidably mounted on the secondary shaft seat (23) and can slide vertically on the secondary shaft seat (23); A second side milling seat B (25), the top of which is rotatably connected to the second side milling seat A (24); A second rotary drive motor (26), the second rotary drive motor (26) is mounted on the second side milling seat A (24) and is used to drive the second side milling seat B (25) to rotate relative to the second side milling seat A (24); A second side milling drive motor (27), the second side milling drive motor (27) being mounted on a second side milling seat A (24); The second side milling power head A (28) is more than one and is installed on the second side milling seat B (25) in the horizontal direction. The second side milling power head A (28) is connected to the second side milling drive motor (27) through a gear transmission structure and is driven to rotate by the second side milling drive motor (27) for side milling processing of a workpiece or drilling a hole on the workpiece.

4. The dual B-axis structure of the ultra-precision machine tool according to claim 3, characterized in that: The positive axis B axis structure (2) also includes A first side milling power head B (11), the number of which is more than one, and which is mounted on the first side milling seat A (6) in a vertical direction, the first side milling power head B (11) being connected to the first side milling drive motor (9) by a gear transmission mechanism, and being driven to rotate by the first side milling drive motor (9) for side milling processing of a workpiece; The secondary shaft B shaft structure (4) also includes The second side milling power head B (29) is more than one and is mounted on the second side milling seat A (24) in the vertical direction. The second side milling power head B (29) is connected to the second side milling drive motor (27) by a gear transmission mechanism and is driven to rotate by the second side milling drive motor (27) for side milling processing of the workpiece.

5. The double B-axis structure of the ultra-precision machine tool according to claim 3 or 4, characterized in that: The positive axis B axis structure (2) includes A first slide plate A (12), the first slide plate A (12) is slidably mounted on the column (1) and can slide horizontally and vertically on the column (1), and a first side milling seat A (6) is fixed on the first slide plate A (12); A first row of cutters (13) is used for turning a workpiece. The first row of cutters (13) is mounted on a first slide plate A (12), with its cutting edge facing the workpiece; The secondary shaft B shaft structure (4) also includes A second slide plate A (30), the second slide plate A (30) is slidably mounted on the secondary shaft seat (23) and can slide vertically on the secondary shaft seat (23), and the second side milling seat A (24) is fixed on the second slide plate A (30); The second row of cutters (31) is mounted on the second side milling seat A (24), and the cutting edges thereof are arranged toward the direction of the workpiece.

6. The dual B-axis structure of the ultra-precision machine tool according to claim 5, characterized in that: The secondary shaft B shaft structure (4) also includes An end milling power head (14) is mounted on the second side milling seat A (24) and is arranged in the direction of the machine tool sub-spindle (3), and is used for milling the end face of a workpiece when in use.

7. The dual B-axis structure of the ultra-precision machine tool according to claim 6, characterized in that: The secondary shaft B shaft structure (4) also includes A boring tool handle (15) is provided. The boring tool handle (15) is provided in plurality. The boring tool handle (15) is installed on the second side milling seat A (24) and is arranged in parallel with the end milling power head (14) for boring a workpiece in a use state.

8. The dual B-axis structure of an ultra-precision machine tool according to claim 3 or 4, characterized in that: The positive axis B axis structure (2) also includes A first hollow reducer (16), the first hollow reducer (16) is mounted on the first side milling seat A (6), the top end of the first side milling seat B (7) is rotatably connected to the first hollow reducer (16), the first rotary drive motor (8) is mounted on the first hollow reducer (16) and is used to drive the first side milling seat B (7) to rotate, the first hollow reducer (16) is provided with a first connecting shaft A running through the upper and lower parts thereof, and is used to connect the first side milling drive motor (9) and the first side milling power head A (10), and the first connecting shaft A can rotate relative to the first hollow reducer (16); The secondary shaft B shaft structure (4) also includes A second hollow reducer (32), the second hollow reducer (32) is installed on the second side milling seat A (24), the top end of the second side milling seat B (25) is rotatably connected to the second hollow reducer (32), the second rotary drive motor (26) is installed on the second hollow reducer (32) for driving the second side milling seat B (25) to rotate, and the second hollow reducer (32) is provided with a second connecting shaft A running through the upper and lower parts thereof, for connecting the second side milling drive motor (27) and the second side milling power head A (28), and the second connecting shaft A can rotate relative to the second hollow reducer (32).

9. The dual B-axis structure of the ultra-precision machine tool according to claim 5, characterized in that: The positive axis B axis structure (2) also includes A slide plate B (17), the slide plate B (17) is slidably mounted on the column (1), and the first slide plate A (12) is slidably mounted on the slide plate B (17); A horizontal drive motor, which is mounted on the column (1) and is used to drive the slide plate B (17) to slide horizontally on the column (1); A first vertical driving motor is installed on the slide plate B (17) and is used to drive the first slide plate A (12) to slide vertically on the slide plate B (17).

10. The dual B-axis structure of the ultra-precision machine tool according to claim 8, characterized in that: The positive axis B axis structure (2) also includes A horizontal guide rail (18), the horizontal guide rail (18) is installed on the column (1) along the horizontal direction; A horizontal slider, which is mounted on the slide plate B (17) and matches with the horizontal guide rail (18) and can slide horizontally on the horizontal guide rail (18); A first vertical guide rail (19), the first vertical guide rail (19) being mounted on the slide plate B (17) along a vertical direction; A first vertical slider (20), the first vertical slider (20) is mounted on the first slide plate A (12), the first vertical slider (20) cooperates with the first vertical guide rail (19) and can slide vertically on the first vertical guide rail (19); A horizontal lead screw (21), one end of which is connected to a horizontal drive motor and driven to rotate by the horizontal drive motor. The horizontal lead screw (21) is threadedly matched with the slide plate B (17). The rotation of the horizontal lead screw (21) is used to drive the slide plate B (17) to slide horizontally. A first vertical screw (22), one end of which is connected to a first vertical drive motor and driven to rotate by the first vertical drive motor. The first vertical screw (22) is threadedly matched with the first slide plate A (12). The rotation of the first vertical screw (22) is used to drive the first slide plate A (12) to slide vertically.

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