Workbench structure and machine tool with same

Abstract

The utility model provides a workbench structure and a machine tool with the workbench structure. The workbench structure comprises a first workbench and a second workbench. The first working table is installed on the second working table, the first working table is used for fixing a workpiece to be machined, a heating piece is installed on the second working table, and the first working table and the second working table are made of different materials. Due to the arrangement of the first workbench and the second workbench, large instant attraction force can be effectively restrained, the situation that the workbenches are deformed due to magnetic attraction of the motor is avoided, and direct heat transfer can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to lathe technical field, concretely relates to a worktable structure and lathe with the worktable structure. BACKGROUND

[0002] The worktable of the lathe, as one of the key components of the lathe, undertakes the important task of supporting the workpiece or the fixture in the machining process, and also directly affects the machining precision and stability. With the increasing demand for high-precision machining in the manufacturing industry, the technology of the worktable of the lathe is also constantly improving.

[0003] At present, the linear motor of the existing lathe is arranged directly below the worktable. The linear motor generates a large amount of heat, especially the secondary (mover) of the linear motor fixed at the bottom of the worktable. The installation position of the high-heat component is not conducive to natural heat dissipation, and there is no interval or excessive setting. The heat energy is directly conducted to the worktable. When machining parts for a long time, the machining stability and precision retention of the lathe are affected. CONTENT OF THE UTILITY MODEL

[0004] The utility model provides a worktable structure and lathe with the worktable structure, can solve the technical problem that the heat energy generated by the linear motor rotor fixed at the bottom of the worktable is directly conducted to the worktable, resulting in deformation of the worktable.

[0005] The utility model provides a worktable structure, it includes first worktable and second worktable;

[0006] The first worktable is installed on the second worktable, the first worktable is used to fix the workpiece, the second worktable is installed with the heat generating part, and the first worktable and the second worktable are made of different materials.

[0007] In some embodiments, the second worktable is a double-layer structure.

[0008] In some embodiments, the second worktable includes a first plate body and a second plate body connected to each other, the first worktable is installed on the end face of the first plate body away from the second plate body, and the heat generating part is installed at the bottom of the second plate body.

[0009] In some embodiments, cooling channels are formed in the first plate body and / or the second plate body, and the cooling channels are used to circulate and flow cooling medium.

[0010] In some embodiments, the first plate body is provided with a first cooling flow channel on an end surface thereof facing the second plate body, the second plate body is provided with a second cooling flow channel on an end surface thereof facing the first plate body, the second cooling flow channel is arranged correspondingly to the first cooling flow channel so as to form a cooling channel by closing the first cooling flow channel and the second cooling flow channel, and the cooling channel is used for circulating and flowing cooling medium.

[0011] In some embodiments, the second plate body is further provided with an oil seal groove on an end surface thereof provided with the second cooling flow channel, the oil seal groove is close to an outer edge of the second plate body, and the second cooling flow channel is located on a radial inner side of the oil seal groove with the end surface of the second plate body as a projection surface.

[0012] In some embodiments, the second workbench is provided with a cooling channel, and the cooling channel is used for circulating and flowing cooling medium.

[0013] In some embodiments, the cooling channel is arranged in an S shape or a snake shape, the cooling channel is provided with a water inlet and a water outlet, the water outlet is provided with a water outlet pipe, and the water outlet pipe is provided with a one-way valve, a pressure sensor and a temperature sensor.

[0014] In some embodiments, the first workbench is made of cast iron material, and the second workbench is made of marble material.

[0015] A machine tool comprises a workbench structure, and the workbench structure is the workbench structure described above.

[0016] The workbench structure and the machine tool with the workbench structure have the following beneficial effects.

[0017] The first workbench and the second workbench can effectively inhibit a large instantaneous suction force, prevent deformation of the workbench caused by magnetic attraction of the motor, and reduce direct heat transfer to the workpiece, thereby reducing the influence of machining precision and stability caused by heating, and reducing the magnetization phenomenon during machining, prolonging the service life of the tool, and ensuring that the full-stroke air gap is within a small deformation amount, and the screws are not forced unevenly during fastening, causing resonance. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only exemplary, and those skilled in the art can obtain other implementation drawings according to the provided drawings without creating any creative labor.

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only exemplary, and those skilled in the art can obtain other implementation drawings according to the provided drawings without creating any creative labor.Figure 1 FIG. 1 is a schematic view of a worktable structure according to an embodiment of the present application;

[0020] Figure 2 FIG. 2 is a schematic view of a second plate body according to an embodiment of the present application;

[0021] Figure 3 FIG. 3 is a schematic view of a machine tool according to an embodiment of the present application.

[0022] FIG. 1 is a schematic view of a worktable structure according to an embodiment of the present application; FIG. 2 is a schematic view of a second plate body according to an embodiment of the present application; DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative labor fall within the scope of protection of the present application.

[0024] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal", and "top, bottom" and the like indicate the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and in the absence of the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component.

[0025] For ease of description, spatial relative terms, such as "on", "above", "upper surface", "upper", and the like, can be used herein to describe the spatial relationship between one device or feature to another device or feature as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the drawings. For example, if the device in the drawings is turned over, the device described as "above" or "on" other devices or structures will then be positioned "below" or "under" the other devices or structures.

[0026] With reference to Figure 1 As shown, according to the embodiment of the utility model, a workbench structure is provided, which comprises a first workbench 1 and a second workbench 2; the first workbench 1 is installed on the second workbench 2, the first workbench 1 is used for fixing a workpiece, the second workbench 2 is installed with a heating element 3, and the first workbench 1 and the second workbench 2 are made of different materials.

[0027] It is worth noting that in the embodiment, the heating element 3 is a motor, specifically a linear motor. The linear motor can be considered as a kind of deformation of the rotary motor in structure, and can be regarded as a rotary motor which is cut along its radial direction and then flattened and evolved. In the linear motor, the stator is called the primary, and the rotor is called the secondary. The heating element 3 is the rotor of the linear motor, and a large magnetic attraction force is generated between the rotor and the stator of the linear motor.

[0028] Specifically, when the workbench moves along the guide rail, the rotor of the linear motor works and generates heat and magnetic attraction. The workpiece is installed on the first workbench 1, and the rotor of the linear motor is installed on the second workbench 2, that is, the workpiece and the linear motor are not arranged on the same workbench, and the two workbenches are made of different materials.

[0029] In the embodiment, when the motor is magnetized, the arrangement of the first workbench 1 and the second workbench 2 can effectively suppress the large instantaneous attraction force, prevent the deformation of the workbench caused by the magnetic attraction of the motor, and set the overall thickness of the two workbenches to be thick, which can reduce the direct heat transfer to the workpiece, thereby reducing the influence of the machining precision and stability caused by the heat, and also can reduce the magnetization phenomenon during machining, prolong the service life of the tool, and ensure that the full stroke air gap is within a small deformation amount and does not worry about uneven force of the screw during fastening, causing resonance.

[0030] With reference to Figure 1 As shown, the second workbench 2 is a double-layer structure.

[0031] In the embodiment, the double-layer structure of the second worktable 2 has better rigidity and stability, better withstands cutting force and gravity in the machining process, reduces vibration and deformation in the machining process, thereby improving machining precision, and the double-layer structure also helps to isolate heat sources and reduce the influence of thermal deformation on machining precision, especially in high-speed or long-time machining process. The double-layer structure worktable can improve the problem that other worktable components are thin and have poor rigidity, poor ability to resist magnetic force of the linear motor, and effectively solve the deformation caused by magnetic force of the motor and reduce magnetization phenomenon during machining, prolong the wear of the tool.

[0032] For reference Figure 1 and Figure 2 As shown in FIGS. 1, 2 and 3, the second worktable 2 includes a first plate body 201 and a second plate body 202 connected to each other, the first worktable 1 is installed on the end face of the first plate body 201 away from the second plate body 202, and the heat generating member 3 is installed on the bottom of the second plate body 202.

[0033] Specifically, the first worktable 1, the first plate body 201 and the second plate body 202 are sequentially arranged from top to bottom and connected by bolts, and the first plate body 201 is located between the first worktable 1 and the second plate body 202. Since the heat generating member 3 is generally installed below the second plate body 202 and is not convenient for natural heat dissipation, not only the second plate body 202 itself has a certain thickness, but also the first plate body 201 can separate the second worktable 2 and the second plate body 202 to prevent heat from being directly transmitted to the first worktable 1.

[0034] In the embodiment, by installing the heat generating member 3 on the bottom of the second plate body 202 and installing the first worktable 1 on the end face of the first plate body 201 away from the second plate body 202, such layout can effectively isolate the heat source and the first worktable 1, reduce the direct transmission of heat to the first worktable 1, and thereby reduce the influence on machining precision and stability. Moreover, since the heat generating member 3 is installed on the bottom of the second plate body 202 and there is a certain space between the first plate body 201 and the second plate body 202, this provides an additional path for heat dissipation, and heat can be dissipated to the surrounding environment through the bottom of the second plate body 202 instead of being directly transmitted to the first worktable 1.

[0035] The embodiment is provided with two worktables, the first worktable 1 is used for fixing the workpiece, and the heating element 3 is installed on the second worktable 2, so that the second worktable 2 mainly bears the heat. Therefore, the embodiment is also provided with a cooling channel 203. According to the structure of the second worktable 2, the cooling channel 203 has at least three implementation manners. The first implementation manner is that the second worktable 2 has an integral structure, and the cooling channel 203 is arranged in the second worktable 2. The second implementation manner is that the second worktable 2 includes a first plate body 201 and a second plate body 202 connected with each other, and the cooling channel 203 can be arranged in only the first plate body 201 or the second plate body 202, or the cooling channel 203 is arranged in both the first plate body 201 and the second plate body 202. The third implementation manner is that flow channels are arranged in the end faces of the plate bodies respectively, and the two flow channels form the cooling channel 203 when the two plate bodies are connected.

[0036] As the first implementation manner of the cooling channel 203 (not shown), the cooling channel 203 is arranged in the second worktable 2, and the cooling channel 203 is used for circulating and flowing the cooling medium.

[0037] Specifically, the second worktable 2 has an integral plate structure, and the cooling channel 203 is arranged in the second worktable 2. When the cooling medium flows in the cooling channel 203, the cooling medium flows in the second worktable 2, and the cooling medium carries away most of the heat, thereby playing a role in controlling the temperature, reducing thermal deformation, and improving the thermal stability of the worktable.

[0038] As the second implementation manner of the cooling channel 203 (not shown), the cooling channel 203 is arranged in the first plate body 201 and / or the second plate body 202, and the cooling channel 203 is used for circulating and flowing the cooling medium.

[0039] Specifically, when the second worktable 2 includes the first plate body 201 and the second plate body 202, and the cooling channel 203 is arranged in the first plate body 201 or the second plate body 202, one of the two plate bodies is arranged with the cooling channel 203, and the cooling medium flowing in the cooling channel 203 can dissipate heat from the plate body, and also has a certain heat dissipation effect on the adjacent second worktable 2 or plate body. When the cooling channel 203 is arranged in both the first plate body 201 and the second plate body 202, that is, two cooling channels 203 are arranged in the second worktable 2, the cooling medium flows in both the two cooling channels 203 or only one of the two cooling channels 203, thereby improving the heat dissipation efficiency, thereby playing a role in controlling the temperature, reducing thermal deformation of the worktable, and improving the thermal stability of the worktable. Through this implementation manner, the cooling channel 203 can be arranged in one plate body or two plate bodies according to the specific heat load and cooling demand. This arrangement provides higher flexibility and adaptability to adapt to different working conditions and environments.

[0040] As a third embodiment of the cooling channel 203, refer to Figure 1 and Figure 2 As shown in the drawings, the first plate body 201 is provided with a first cooling flow channel 231 on the end face facing the second plate body 202, and the second plate body 202 is provided with a second cooling flow channel 232 on the end face facing the first plate body 201. The second cooling flow channel 232 is arranged correspondingly to the first cooling flow channel 231, so that the first cooling flow channel 231 and the second cooling flow channel 232 are closed to form a cooling channel 203 for circulating cooling medium.

[0041] Specifically, in combination with the connection mode of the first plate body 201 and the second plate body 202, the first cooling flow channel 231 is arranged on the end face of the first plate body 201, and the second cooling flow channel 232 is arranged on the end face of the second plate body 202. When the first plate body 201 and the second plate body 202 are connected, the two cooling flow channels are closed to form a complete cooling channel 203, and the cooling medium also flows in the cooling channel 203. Through this embodiment, the flow channel is arranged on the end face of the plate body. This arrangement allows the cooling medium to flow between the two plate bodies, thereby achieving more efficient heat exchange. The cooling medium can better carry out heat and more effectively absorb and transfer heat. By arranging the flow channel on the end face of the plate body, the cooling channel 203 can be arranged without increasing the additional volume, so that the entire cooling system is more compact and saves space. Therefore, through effective cooling, thermal deformation caused by temperature difference can be reduced, thereby improving the machining accuracy and stability of the machine tool 7.

[0042] Refer to Figure 1 and Figure 2 As shown in the drawings, the end face of the second plate body 202, on which the second cooling flow channel 232 is arranged, is also provided with an oil seal groove 221. The oil seal groove 221 is close to the outer edge of the second plate body 202. Taking the end face of the second plate body 202 as the projection plane, the second cooling flow channel 232 is located on the radial inner side of the oil seal groove 221.

[0043] Specifically, the oil seal groove 221 is annular. Since the flow channel is arranged on the end face, although the cooling medium will not flow out after the two flow channels are closed, considering that the workbench is also provided with electrical components, the oil seal groove 221 is arranged on the end face of the second plate body 202, and the second cooling flow channel 232 is located on the radial inner side of the oil seal groove 221, which can play a good sealing effect. Moreover, the arrangement of the oil seal groove 221 can prevent external pollutants from entering the interior of the second workbench 2.

[0044] As a specific embodiment, the oil seal groove 221 is provided with an inner layer and an outer layer. The outer oil seal groove 221 and the inner oil seal groove 221 effectively solve the leakage of the cooling medium in the cooling circuit.

[0045] By establishing cooling channels 203 through the above three methods, the setting of cooling channels 203 can reduce thermal stress concentration. A properly designed cooling channel 203 can achieve uniform distribution of cooling fluid, enhance cooling effect, and extend the service life of the worktable. An effective cooling system can ensure that the worktable remains within a suitable operating temperature range during operation, avoiding performance degradation caused by overheating, thereby improving the operating efficiency and stability of the machine tool 7. In this embodiment, the cooling channel 203 is formed by creating grooves or channels. In other embodiments, a cooling circuit can also be formed by setting water pipes in the second worktable 2 or plate, which can also cool the worktable or plate. However, the cooling efficiency of water pipes is not as high as that of a channel.

[0046] See also Figure 1 and Figure 2 As shown, the cooling channel 203 is arranged in an S-shape or serpentine shape. The cooling channel 203 has a water inlet 233 and a water outlet. The water outlet is equipped with a water outlet pipe 234, and a one-way valve 4, a pressure sensor 5 and a temperature sensor 6 are installed on the water outlet pipe 234.

[0047] Specifically, the cooling medium flows in from the left inlet 233, circulates throughout the cooling channel 203, and then flows out from the outlet, carrying away heat. This achieves the purpose of reducing the workbench temperature, minimizing thermal deformation, and improving the workbench's thermal stability. At the outlet of the cooling channel 203, an outlet pipe 234 is installed, and a one-way valve 4 is installed on the outlet pipe 234 to prevent the cooling medium carrying away heat from flowing back and affecting the cooling effect. Pressure sensor 5 and temperature sensor 6 are also installed on the water outlet pipe 234. When the cooling medium circulates in the cooling channel 203 of the workbench, pressure sensor 5 and temperature sensor 6 are activated to detect the pressure and temperature in the water outlet pipe 234. The obtained signal value P is compared with the preset threshold P0. If the P value obtained by pressure sensor 5 is greater than the preset threshold P0, it indicates that there is excessive pressure in the cooling channel 203, which will cause cooling medium leakage. This reminds the machine tool 7 maintenance personnel to adjust the pressure of the cooling channel 203 in time. The signal value T obtained by temperature sensor 6 is compared with the set temperature threshold T0 to achieve the cooling effect. If the signal values ​​are normal and do not exceed the maximum threshold, the cooling effect is achieved.

[0048] In this embodiment, the S-shaped or serpentine cooling channel 203 can increase the flow path of the cooling medium in the workbench, thereby improving the heat exchange efficiency and more effectively removing heat from the workbench. The one-way valve 4 on the outlet pipe 234 can prevent backflow of the cooling medium when the pressure changes, ensure one-way flow of the cooling medium, and maintain normal operation of the cooling system. The pressure sensor 5 can detect whether there is an abnormal pressure in the cooling system, such as a pressure that is too high, which can cause the cooling medium to leak, and timely remind the maintenance personnel to adjust to avoid system failure. The temperature sensor 6 can monitor the temperature of the cooling medium and compare it with the preset threshold value to ensure that the cooling effect meets the expectations. If the temperature exceeds the set value, measures can be taken in time, such as increasing the flow of the cooling medium or replacing the cooling medium. Through the pressure sensor 5 and the temperature sensor 6, the pressure and temperature of the cooling medium can be monitored in real time to ensure that the cooling system is in the best working state, and the temperature of the workbench is controlled to reduce thermal deformation and improve the precision and stability during the machining process.

[0049] For reference Figure 1 and Figure 2 As shown in FIGS. 1 and 2, the first workbench 1 is made of cast iron material, and the second workbench 2 is made of marble material.

[0050] In this embodiment, the first plate body 201 and the second plate body 202 are both made of marble material, and the second plate body 202 has a ground wire installed and connected to the base ground. The first workbench 1 is made of cast iron and formed into a cast structure by casting. The first workbench 1 is combined with the double-layer marble structure of the second workbench 2, which can effectively solve the problem of component deformation caused by motor heating, affecting the precision and smoothness of workpiece machining. The second workbench 2 has a cooling loop system inside the double-layer marble, which uses circulating cooling medium to control the temperature of the workbench, reduce thermal deformation, and improve the thermal stability of the workbench. The first workbench 1 and the second workbench 2 of this embodiment are set up through electromagnetic interference resistance and heat insulation, to avoid the heat transfer from the moving part of the linear motor. The cast iron and marble workbench is set up to greatly reduce the temperature and effectively solve the problem of component deformation caused by motor heating.

[0051] For reference Figures 1 to 3 As shown in FIGS. 1 and 2, the first workbench 1 is made of cast iron material, and the second workbench 2 is made of marble material.

[0052] Specifically, the second plate body 202 is provided with mounting slide block 8 hole and workbench hole for mounting the slide block 8 at the bottom of the marble second plate body 202 and the installation and positioning of the workbench. The first workbench 1 is provided with a T-shaped groove for mounting and clamping parts.

[0053] The first plate body 201 of the machine tool 7 in the embodiment is made of cast iron material, and the combined worktable of the second plate body 202 is made of marble, which is beneficial to anti-electromagnetic interference and heat insulation effect, effectively prevents deformation caused by motor magnetic suction and reduces magnetization phenomenon during machining, solves component deformation caused by motor heating, improves machining precision and smoothness, and reduces electromagnetic force loss to the tool.

[0054] Those skilled in the art can easily understand that the above-mentioned advantageous modes can be freely combined and superimposed without conflict.

[0055] The above is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application. The above is only a preferred embodiment of the present application, and it should be pointed out that, for ordinary skilled in the art, without departing from the technical principle of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be regarded as the protection scope of the present application.

Claims

1. A worktable structure, characterized by, The utility model relates to a workbench structure, comprising: a first workbench (1) and a second workbench (2); the first workbench (1) is installed on the second workbench (2), the first workbench (1) is used for fixing workpiece, the second workbench (2) is installed with heating element (3), the first workbench (1) and the second workbench (2) are made of different materials.

2. Table structure according to claim 1, characterized in that The second workbench (2) is a double-layer structure.

3. Table structure according to claim 2, characterized in that The second workbench (2) comprises a first plate body (201) and a second plate body (202) connected with each other, the first workbench (1) is installed on the end face of the first plate body (201) away from the second plate body (202), and the heating element (3) is installed at the bottom of the second plate body (202).

4. Table structure according to claim 3, characterized in that Cooling channels (203) are formed in the first plate body (201) and / or the second plate body (202) for circulating cooling medium.

5. The table structure according to claim 3, characterized in that A first cooling flow channel (231) is formed in the end face of the first plate body (201) facing the second plate body (202), a second cooling flow channel (232) is formed in the end face of the second plate body (202) facing the first plate body (201), the second cooling flow channel (232) is arranged correspondingly to the first cooling flow channel (231) to form a closed cooling channel (203) with the first cooling flow channel (231) and the second cooling flow channel (232), and the cooling channel (203) is used for circulating cooling medium.

6. Table structure according to claim 5, characterized in that An oil seal groove (221) is further formed in the end face of the second plate body (202) where the second cooling flow channel (232) is formed, the oil seal groove (221) is close to the outer edge of the second plate body (202), and the second cooling flow channel (232) is located on the radial inner side of the oil seal groove (221) with the end face of the second plate body (202) as a projection plane.

7. The table structure according to claim 1, characterized in that Cooling channels (203) are formed in the second workbench (2) for circulating cooling medium.

8. Table structure according to claim 4, 5 or 7, characterized in that The cooling channels (203) are arranged in an S shape or a snake shape, the cooling channels (203) have a water inlet (233) and a water outlet, the water outlet is provided with a water outlet pipe (234), and the water outlet pipe (234) is provided with a one-way valve (4), a pressure sensor (5) and a temperature sensor (6).

9. The table structure according to claim 1, characterized in that The first workbench (1) is made of cast iron material, and the second workbench (2) is made of marble material.

10. A machine tool comprising a table structure, characterized in that The workbench structure is the workbench structure in any one of claims 1 to 9. The workbench structure is the workbench structure in any one of claims 1 to 9.

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