Sliding table and machine tool
By designing a sliding table including a gas-floating assembly, the problems of insufficient linear motion accuracy and high power consumption of linear motor drive in the prior art are solved, and high-precision workpiece processing is achieved.
Patent Information
- Application Number
- CN202421770752.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-24
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-24
AI Technical Summary
When machining workpieces with complex shapes and high accuracy requirements, the linear motion accuracy of the screw nut pair in the prior art is insufficient. The slider driven by the linear motor causes high power consumption and friction due to the large weight, which affects the positioning accuracy.
A sliding table is designed, including a work table, a transverse and longitudinal adjustment device, a support block, a first air float assembly and a first air extraction assembly. The friction force is reduced by the air-floating assembly, the transmission power loss is reduced, and the stable movement of the support block is ensured by balancing the force.
The precise position adjustment of the sliding table is achieved, friction and transmission power loss are reduced, motion efficiency and transmission accuracy are improved, and high-precision machining of the workpiece is ensured.
Smart Images
Figure CN222971515U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of machine tools, in particular to a slide table and a machine tool. Background Art
[0002] For some workpieces with relatively complex shapes, multiple surfaces of them need to be machined. When the accuracy requirements of these workpieces are relatively high, if a lead screw-nut pair is used for linear motion at this time, due to the gap between the lead screw and the nut, the accuracy is not high enough.
[0003] If a linear motor is directly used, for some sliders with relatively large weights, a relatively large power is required for driving. At the same time, due to the relatively large weight of the slider, the frictional force is also relatively large, which will affect its positioning accuracy to a certain extent. Summary of the Utility Model
[0004] The technical problem to be solved by the utility model is: to solve at least one of the proposed technical problems.
[0005] The solution of the utility model to solve its technical problem is:
[0006] A slide table, which comprises: a workbench;
[0007] A lateral adjustment device, which is arranged on the workbench;
[0008] A longitudinal adjustment device, which is arranged on the lateral adjustment device, and the lateral adjustment device drives the longitudinal adjustment device to reciprocate in the front-back direction;
[0009] A support block, which is arranged on the workbench, and the support block and the workbench can slide relative to each other, and the longitudinal adjustment device drives the support block to reciprocate in the left-right direction;
[0010] A first air floating assembly, which is arranged on the bottom surface of the support block, and the first air floating assembly is used to blow out gas towards the workbench;
[0011] A first air extraction assembly, which is arranged on the bottom surface of the support block, and the first air extraction assembly is used to extract air towards the workbench.
[0012] The beneficial effects of the present utility model are as follows. The sliding table mainly includes a workbench, a lateral adjustment device, a longitudinal adjustment device, a support block, a first air-floating assembly, and a first air-extracting assembly. The workbench is the basic part of the sliding table and can be used to bear the weight of the support block. In addition, the support block can slide on the workbench, and the flatness of the workbench ensures stable sliding of the support block, thereby guaranteeing product quality and precision. Secondly, the lateral adjustment device and the longitudinal adjustment device are respectively responsible for the lateral and longitudinal movement of the sliding table. The lateral adjustment device is arranged on the workbench, and the longitudinal adjustment device is arranged on the lateral adjustment device. The coordinated use of these two sets of devices enables the sliding table to achieve precise position adjustment on the top surface of the workbench. The first air-floating assembly and the first air-extracting assembly are respectively located at the bottom surface of the support block. The first air-floating assembly is responsible for blowing gas towards the workbench direction, forming a uniform air film between the workbench and the support block, which can play a role in reducing friction, reducing the power loss of the machine tool transmission, reducing thermal deformation, and improving the movement efficiency and transmission precision. The first air-extracting assembly is responsible for extracting air towards the workbench to generate a small amount of reverse suction force. The force balance among the air buoyancy generated by the first air-extracting assembly and the first air-floating assembly and the gravity received by the moving part ensures the stable movement of the support block, thereby maintaining the stability of the support block. Through the setting of the above structure, the sliding of the support table is smooth and stable.
[0013] As a further improvement of the above technical solution, the lateral adjustment device includes a left mounting block, a right mounting block, a left linear motor, and a right linear motor. The left linear motor is arranged on the left mounting block, the right linear motor is installed on the right mounting block, the longitudinal adjustment device is located between the left linear motor and the right linear motor, and the left linear motor and the right linear motor drive the longitudinal adjustment device to move back and forth.
[0014] As a further improvement of the above technical solution, the sliding table further includes two second air-floating blocks, and the two second air-floating blocks are respectively arranged below the longitudinal adjustment device and are used to support the workbench downward.
[0015] As a further improvement of the above technical solution, the sliding table further includes two third air-floating blocks, and the two third air-floating blocks are respectively arranged at both ends of the longitudinal adjustment device and are respectively used to abut against the mutually facing surfaces of the left mounting block and the right mounting block.
[0016] As a further improvement of the above technical solution, the longitudinal adjustment device includes a cross beam and a longitudinal linear motor arranged on the cross beam, and the longitudinal linear motor drives the support block to slide left and right.
[0017] As a further improvement of the above technical solution, a through hole is opened in the middle of the support block along its width, and the support block is sleeved on the cross beam through the through hole.
[0018] As a further improvement of the above technical solution, a first groove is provided on the top surface of the cross beam, and the longitudinal linear motor is arranged in the first groove.
[0019] As a further improvement of the above technical solution, the first air floating assembly is arranged in a ring shape.
[0020] As a further improvement of the above technical solution, the first air extraction assembly is arranged inside the annular first air floating assembly.
[0021] The present utility model further provides a machine tool, which includes the sliding table in any of the above technical solutions. Description of the Drawings
[0022] Figure 1 is an axonometric view of the sliding table of the present utility model Figure 1 ;
[0023] Figure 2 is an axonometric view of the sliding table of the present utility model Figure 2 , and the workbench is hidden in the figure;
[0024] Figure 3 is the front view of the sliding table of the present utility model.
[0025] In the drawings: 1 - workbench, 2 - transverse adjustment device, 21 - left mounting block, 22 - right mounting block, 23 - left linear motor, 24 - right linear motor, 3 - longitudinal adjustment device, 31 - cross beam, 311 - first groove, 32 - longitudinal linear motor, 4 - support block, 5 - first air floating assembly, 6 - first air extraction assembly, 7 - second air floating block, 8 - third air floating block. Detailed Embodiments
[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required for the above description of the embodiments are briefly described. Obviously, the described drawings are only a part of the embodiments of the present utility model, rather than all embodiments. Those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative efforts.
[0027] The concept, specific structure and technical effects of the present utility model will be clearly and completely described below in conjunction with the embodiments and the drawings, so as to fully understand the purpose, features and effects of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, other embodiments obtained by those skilled in the art without creative efforts shall fall within the scope of protection of the present utility model. In addition, all the connection / connection relationships mentioned in the text do not simply refer to the direct connection of components, but refer to the composition of a more optimal connection structure by adding or reducing connection accessories according to specific implementation situations. Each technical feature in the present utility model can be interactively combined on the premise of not conflicting with each other.
[0028] Referring to Figures 1 to 3 , a sliding table includes a workbench 1, a lateral adjustment device 2, a longitudinal adjustment device 3, a support block 4, a first air-floating assembly 5 and a first air-extracting assembly 6; the lateral adjustment device 2 is arranged on the workbench 1; the longitudinal adjustment device 3 is arranged on the lateral adjustment device 2, and the lateral adjustment device 2 drives the longitudinal adjustment device 3 to reciprocate in the front-rear direction; the support block 4 is arranged on the workbench 1, and the support block 4 and the workbench 1 can slide relative to each other, and the longitudinal adjustment device 3 drives the support block 4 to reciprocate in the left-right direction; the first air-floating assembly 5 is arranged on the bottom surface of the support block 4, and the first air-floating assembly 5 is used to blow out gas towards the workbench 1; the first air-extracting assembly 6 is arranged on the bottom surface of the support block 4, and the first air-extracting assembly 6 is used to extract air towards the workbench 1.
[0029] As described above, the sliding table mainly includes a workbench 1, a lateral adjustment device 2, a longitudinal adjustment device 3, a support block 4, a first air-floating assembly 5 and a first air-extracting assembly 6. The workbench 1 is the basic part of the sliding table and can be used to bear the weight of the support block 4. In addition, the support block 4 can slide on the workbench 1, and the flatness of the workbench 1 ensures stable sliding of the support table, thus guaranteeing product quality and precision. Secondly, the lateral adjustment device 2 and the longitudinal adjustment device 3 are respectively responsible for the lateral and longitudinal movement of the sliding table. The lateral adjustment device 2 is arranged on the workbench 1, and the longitudinal adjustment device 3 is arranged on the lateral adjustment device 2. The coordinated use of these two sets of devices enables the sliding table to achieve precise position adjustment on the top surface of the workbench 1. The first air-floating assembly 5 and the first air-extracting assembly 6 are respectively located at the bottom surface of the support block 4; the first air-floating assembly 5 is responsible for blowing gas towards the workbench 1 to form a uniform air film between the workbench 1 and the support block 4, which can reduce friction, reduce the power loss of the machine tool drive, reduce thermal deformation, and improve the movement efficiency and transmission precision. The first air-extracting assembly 6 is responsible for extracting air towards the workbench 1 to generate a small amount of reverse suction force. The force balance among the air buoyancy generated by the first air-extracting assembly 6 and the first air-floating assembly 5 and the gravity of the moving part ensures the stable movement of the support block 4, thus maintaining the stability of the support block 4.
[0030] In some embodiments, the lateral adjustment device includes a left mounting block 21, a right mounting block 22, a left linear motor 23 and a right linear motor 24. The left linear motor 23 is arranged on the left mounting block 21, the right linear motor 24 is installed on the right mounting block 22, the longitudinal adjustment device 3 is located between the left linear motor 23 and the right linear motor 24, and the left linear motor 23 and the right linear motor 24 drive the longitudinal adjustment device 3 to move back and forth. In actual use, the left linear motor 23 and the right linear motor 24 are arranged at intervals in the left-right direction respectively, and the left and right ends of the longitudinal adjustment device 3 are respectively connected to the left linear motor 23 and the right linear motor 24, and its structure is very stable. The left linear motor 23 and the right linear motor 24 synchronously drive the longitudinal adjustment device 3 to reciprocate in the front-back direction.
[0031] In some embodiments, the sliding table further includes two second air-floating blocks 7. The two second air-floating blocks 7 are respectively arranged below the longitudinal adjustment device 3, and the two second air-floating blocks 7 are used to support the workbench 1 downward. In actual use, the two second air-floating blocks 7 are arranged at intervals in the left-right direction. For example, the two second air-floating blocks 7 arranged left and right are respectively arranged below the left and right ends of the longitudinal adjustment device 3, so that the support block 4 is located between the two second air-floating blocks 7. In this way, the sliding of the longitudinal adjustment device 3 is very stable.
[0032] In some embodiments, the sliding table further includes two third air floating blocks 8, which are respectively arranged at both ends of the longitudinal adjustment device 3, and the two third air floating blocks 8 are respectively used to abut against the mutually facing surfaces of the left mounting block 21 and the right mounting block 22. Through the setting of this structure, the longitudinal adjustment device 3 can be limited along the length direction of the longitudinal adjustment device 3.
[0033] In some embodiments, the longitudinal adjustment device 3 includes a cross beam 31 and a longitudinal linear motor 32 arranged on the cross beam 31, and the longitudinal linear motor 32 drives the support block 4 to slide left and right. This structure is simple and convenient to set up. Through the setting of this structure, the support block 4 can be driven to move in the left and right directions.
[0034] In certain embodiments, the second air floating block 7 and the third air floating block 8 are respectively arranged on the cross beam 31.
[0035] In some embodiments, a through hole is formed in the middle of the support block 4 along its width, and the support block 4 is sleeved on the cross beam 31 through the through hole. The cross beam 31 limits the through hole on the support block 4, so that the movement direction of the support block 4 can only be along the length direction of the cross beam 31.
[0036] In some embodiments, a first groove 311 is provided on the top surface of the cross beam 31, and the longitudinal linear motor 32 is arranged in the first groove 311. During use, the longitudinal linear motor 32 is placed in the first groove 311 to accommodate the longitudinal linear motor 32, reduce the space occupied by the longitudinal linear motor 32, and thus reduce the size of the through hole formed on the support block 4.
[0037] In actual use, the workpiece can be installed on the support table. For example, mechanisms such as a spindle, a turntable, a chuck or a caliper for clamping the workpiece can be arranged on the support table.
[0038] In some embodiments, the first air floating assembly 5 is arranged in a ring shape. This structure is simple and convenient to set up. Optionally, the first air floating assembly 5 is arranged in a rectangular closed loop shape.
[0039] In some embodiments, the first air extraction assembly 6 is arranged inside the annular first air floating assembly 5. This structure is simple and convenient to set up. The first air floating assembly 5 is arranged in the middle inside the annular first air floating assembly 5, so that the support block 4 is kept balanced and stable.
[0040] The present utility model further provides a machine tool, which includes the sliding table in any of the above embodiments. Since the above content has described the sliding table in detail, those skilled in the art should be able to understand it in combination with the accompanying drawings of the specification. Therefore, the sliding table will not be elaborated here. The machine tool adopts the above-mentioned sliding table, which can slide the workpiece with high precision to meet one of the necessary conditions for high-precision machining.
[0041] The above has specifically described the preferred embodiments of the present utility model, but the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.
Claims
1. A slide table, comprising a workbench (1), characterized in that: Also includes: A lateral adjustment device (2), wherein the lateral adjustment device (2) is arranged on the workbench (1); A longitudinal adjustment device (3), wherein the longitudinal adjustment device (3) is arranged on the transverse adjustment device (2), and the transverse adjustment device (2) drives the longitudinal adjustment device (3) to reciprocate in a front-rear direction; A support block (4), wherein the support block (4) is arranged on the workbench (1), the support block (4) and the workbench (1) are relatively slidable, and the longitudinal adjustment device (3) drives the support block (4) to reciprocate in the left-right direction; A first air flotation component (5), the first air flotation component (5) being arranged on the bottom surface of the support block (4), and the first air flotation component (5) being used to blow air in the direction of the workbench (1); A first air extraction component (6), the first air extraction component (6) is arranged on the bottom surface of the support block (4), and the first air extraction component (6) is used to extract air towards the workbench (1).
2. The slide table according to claim 1, characterized in that: The lateral adjustment device comprises a left mounting block (21), a right mounting block (22), a left linear motor (23) and a right linear motor (24); the left linear motor (23) is arranged on the left mounting block (21); the right linear motor (24) is installed on the right mounting block (22); the longitudinal adjustment device (3) is located between the left linear motor (23) and the right linear motor (24); the left linear motor (23) and the right linear motor (24) drive the longitudinal adjustment device (3) to move forward and backward.
3. The slide table according to claim 1, characterized in that: The slide table further comprises two second air-floating blocks (7), the two second air-floating blocks (7) being respectively arranged below the longitudinal adjustment device (3), and the two second air-floating blocks (7) being used to support the workbench (1) downwards.
4. The slide table according to claim 2, characterized in that: The slide also includes two third air-floating blocks (8), which are respectively arranged at two ends of the longitudinal adjustment device (3), and are respectively used to abut against the mutually facing surfaces of the left mounting block (21) and the right mounting block (22).
5. The slide table according to claim 1, characterized in that: The longitudinal adjustment device (3) comprises a crossbeam (31) and a longitudinal linear motor (32) arranged on the crossbeam (31), and the longitudinal linear motor (32) drives the support block (4) to slide leftward and rightward.
6. The slide table according to claim 5, characterized in that: An opening extending through the width of the support block (4) is provided in the middle of the support block (4), and the support block (4) is sleeved on the crossbeam (31) through the opening.
7. The slide table according to claim 6, characterized in that: The top surface of the crossbeam (31) is provided with a first groove (311), and the longitudinal linear motor (32) is arranged in the first groove (311).
8. The slide table according to claim 1, characterized in that: The first air flotation component (5) is arranged in a ring shape.
9. The slide table according to claim 7, characterized in that: The first air extraction component (6) is arranged on the inner side of the first annular air flotation component (5).
10. A machine tool, characterized in that: Comprising a slide as described in any one of claims 1-9.