Machine tool

Abstract

A workbench and a supporting frame of the machine tool are both installed on a base, the supporting frame is located on the peripheral side of the workbench and provided with a main shaft, and the axis direction of the main shaft located above the workbench extends in the height direction of the base. The rotary table mechanism of the machine tool comprises a rotary table and a parallelism adjusting component, the parallelism adjusting component comprises a first connecting part, a second connecting part, a first adjusting piece and a second adjusting piece, the rotary table is installed on the first connecting part and can rotate around the axis of the rotary table, and the second connecting part is located at the bottom of the first connecting part and installed on a workbench. The first adjusting piece is connected to the second connecting part and can ascend and descend in the height direction of the workbench so as to adjust the parallelism between the table top of the rotary table and the end face of the main shaft, and the second adjusting piece penetrates through the first connecting part so as to fix the first connecting part to the top of the first adjusting piece. The machine tool at least can solve the problems that the parallelism adjusting efficiency of the rotary table is low and the rotary table is inconvenient to disassemble and assemble.

Description

Technical Field

[0001] The invention relates to the technical field of ultra-precision machining equipment and relates to a machine tool. Background Art

[0002] The turntable installed on the working table of the machine tool needs to place the workpiece on the turntable for processing. Once the parallelism between the turntable and the spindle end face where the machine tool tool is located cannot meet the corresponding precision requirements, the workpiece is prone to tilt when the tool is processing the workpiece, thereby affecting the workpiece processing accuracy.

[0003] At present, when using machine tools for processing, the turntable is generally directly installed on the workbench, and the parallelism between the turntable and the spindle end face is adjusted by measuring the parallelism between the turntable and the spindle end face and grinding the upper end face of the turntable. Another method is to use multiple flat washers to adjust the parallelism. However, the first adjustment method requires a lot of manpower to grind and adjust the upper end face of the turntable in the later stage, so the efficiency is low. The second adjustment method is difficult to adjust because it is necessary to adjust multiple flat washers to complete the parallelism adjustment between the turntable and the spindle end face, so the adjustment efficiency is also relatively low. In addition, since the turntable and all the stresses it bears act on the flat washers when the turntable is working, long-term use may cause the flat washers to deform, resulting in a decrease in the parallelism between the turntable and the spindle end face, and then the machining accuracy of the turntable is reduced. When the turntable needs to be disassembled or installed from the workbench many times, the disassembly and assembly of the turntable is very inconvenient due to the complicated operation process. Summary of the invention

[0004] The main purpose of the present invention is to provide a machine tool which can at least solve the problems of low efficiency in adjusting the parallelism of the turntable and inconvenient assembly and disassembly of the turntable.

[0005] According to one aspect of the present invention, there is provided a machine tool, comprising:

[0006] Pedestal;

[0007] A workbench, the workbench is installed on the base;

[0008] A support frame, the support frame is installed on the base and located on the outer peripheral side of the workbench, and a main shaft is provided on the support frame, the axial direction of the main shaft extends along the height direction of the base, and the main shaft is located above the workbench;

[0009] A turntable mechanism, the turntable mechanism includes a turntable and a parallelism adjustment component, the parallelism adjustment component includes a first connecting part, a second connecting part, a first adjusting member and a second adjusting member, the turntable is installed on the first connecting part and can rotate around the axis of the turntable itself, the second connecting part is located at the bottom of the first connecting part and is installed on the workbench, the first adjusting member is connected to the second connecting part and can be raised and lowered along the height direction of the workbench, the second adjusting member is penetrated through the first connecting part for fixing the first connecting part to the top of the first adjusting member, wherein the first adjusting member is raised and lowered along the height direction of the base to drive the turntable to rise and fall to adjust the parallelism between the table surface of the turntable and the end face of the spindle.

[0010] Further, the first adjusting member and the second adjusting member each include a plurality of members, and the first adjusting member and the second adjusting member are arranged one by one, the plurality of first adjusting members are arranged at intervals on the second connecting portion around the circumferential direction of the second connecting portion, and the first adjusting member is located between the second connecting portion and the first connecting portion;

[0011] A plurality of second adjusting members are arranged at intervals on the first connecting portion around a circumferential direction of the first connecting portion.

[0012] Further, the first adjusting member is provided with a first threaded hole and an external thread, wherein the first threaded hole is located at the top of the first adjusting member and extends along the height direction of the workbench;

[0013] The second connecting portion is provided with a second threaded hole, the first adjusting member includes a plurality of second threaded holes, and the second threaded holes correspond to the first adjusting members one by one, and the first adjusting member is inserted into the second threaded hole through the external thread;

[0014] The first connecting portion is provided with a plurality of connecting holes, and the plurality of connecting holes are evenly spaced along the circumferential direction of the first connecting portion and correspond one-to-one to the first threaded holes;

[0015] Wherein, the second adjusting member is inserted into the corresponding connecting hole and the first threaded hole to fix the first connecting portion to the top of the first adjusting member.

[0016] Furthermore, the parallelism adjustment component further comprises a support member, and a positioning hole is provided on the second connecting portion;

[0017] Among them, the positioning hole passes through the second connecting part along the height direction of the workbench, and the axis of the positioning hole coincides with the central axis of the turntable, the support member is fixedly connected to the side of the workbench close to the first connecting part, and the support member is installed in the positioning hole and supported on the bottom of the first connecting part.

[0018] Furthermore, there is a transition fit between the support member and the positioning hole.

[0019] Further, the support member includes a supporting portion and a connecting portion;

[0020] Among them, the supporting part is provided with a convex arc surface for contacting the first connecting part, the center of the convex arc surface is located on the side away from the first connecting part, the connecting part is connected to the side of the supporting part away from the first connecting part, and the supporting member is fixedly connected to the workbench through the connecting part.

[0021] Furthermore, a plurality of locking members are provided on the periphery of the connecting portion, and the connecting portion is fixed to the workbench through the locking members;

[0022] The support member is provided in a columnar structure, and the support member further comprises an annular groove, which is provided around the outer circumference of the columnar structure and is located between the support portion and the connecting portion.

[0023] Furthermore, the turntable mechanism further comprises a plurality of hanging rings, which are evenly spaced apart on the second connecting portion along a circumferential direction of the second connecting portion, and the hanging rings are close to an edge of the second connecting portion.

[0024] Further, the first connecting portion includes a first connecting plate, the second connecting portion includes a second connecting plate, the turntable is detachably mounted on the first connecting plate via a first fixing member, and the second connecting plate is detachably mounted on the workbench via a second fixing member; and / or,

[0025] The second connecting portion is arranged in a disc shape, and the second fixing members are arranged at even intervals around the circumference of the second connecting portion.

[0026] Furthermore, the parallelism adjustment component further includes a locking piece, and the locking piece is sleeved on the first adjustment piece to lock the first adjustment piece to the second connecting portion.

[0027] In the present invention, the operator can adjust the parallelism between the table top of the turntable and the end face of the spindle through the first adjusting member and the second adjusting member. In actual use, when the operator finds that the parallelism between the table top of the turntable and the end face of the spindle does not meet the requirements, the operator can first adjust the second adjusting member at the required adjustment position along the end away from the top of the first adjusting member, so that a gap can be formed between the top of the first adjusting member and the top of the second adjusting member at the corresponding position for the first connecting part to move along the height direction of the workbench. Then the first adjusting member is raised and lowered along the height direction of the workbench, and the adjustment of the first adjusting member is stopped when the parallelism between the table top of the turntable and the end face of the spindle meets the requirements. Finally, the operator can adjust the second adjusting member along one end close to the top of the first adjusting member so that the top of the second adjusting member can fit tightly together with the first connecting portion. In this way, the first connecting portion can be fixed to the top of the first adjusting member, thereby completing the parallelism adjustment between the table top of the turntable and the end face of the spindle, so that the parallelism between the table top of the turntable and the end face of the spindle meets the use requirements of the machine tool, so that the machine tool can perform subsequent processing operations.

[0028] That is to say, compared with the existing machine tools, the machine tool of the present application can simplify the previously complicated parallelism adjustment operation process through a simple structural design, has the advantage of easy operation, and can improve the adjustment efficiency of the turntable parallelism to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0030] Figure 1 A structural diagram of a machine tool disclosed in an embodiment of the present invention;

[0031] Figure 2 A structural diagram of a turntable mechanism and a workbench disclosed in an embodiment of the present invention;

[0032] Figure 3 It is a structural diagram of the turntable mechanism disclosed in an embodiment of the present invention at a first viewing angle;

[0033] Figure 4 It is a structural diagram of the turntable mechanism disclosed in an embodiment of the present invention at a second viewing angle;

[0034] Figure 5 A partial cross-sectional view of the turntable mechanism disclosed in an embodiment of the present invention at a second viewing angle;

[0035] Figure 6 for Figure 5 A magnified view of part A;

[0036] Figure 7 A structural diagram of a support member disclosed in an embodiment of the present invention;

[0037] Figure 8 for Figure 5 A magnified view of part B;

[0038] Fig. 9 for Figure 5 Magnified view of part C.

[0039] The above drawings include the following reference numerals:

[0040] 10. Base; 20. Workbench; 30. Support frame; 31. Spindle; 311. End face; 40. Turntable mechanism; 41. Turntable; 411. Table top; 42. Parallelism adjustment component; 421. First connecting part; 4211. Connecting hole; 422. Second connecting part; 4221. Second threaded hole; 4222. Positioning hole; 423. First adjusting member; 4231. First threaded hole; 4232. External thread; 424. Second adjusting member; 425. Support member; 4251. Support part; 42511. Convex arc surface; 4252. Connecting part; 4253. Annular groove; 426. Locking member; 43. Lifting ring; 50. First fixing member; 60. Second fixing member; 61. Stud; 62. Nut; 63. Washer; 70. Locking member. DETAILED DESCRIPTION

[0041] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0042] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0043] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0044] In order to solve the problems of low efficiency in adjusting the parallelism of the turntable and inconvenient assembly and disassembly of the turntable, a machine tool is provided according to an embodiment of the present application. The machine tool of the present application will be described in detail below in conjunction with the accompanying drawings.

[0045] See also Figures 1 to 9 As shown, according to an embodiment of the present invention, a machine tool is provided, which includes a base 10, a workbench 20, a support frame 30 and a turntable mechanism 40.

[0046] The workbench 20 is mounted on the base 10 . The support frame 30 is mounted on the base 10 and is located at the outer peripheral side of the workbench 20 . The support frame 30 is provided with a spindle 31 , the axis direction of the spindle 31 extends along the height direction of the base 10 , and the spindle 31 is located above the workbench 20 . The turntable mechanism 40 includes a turntable 41 and a parallelism adjustment component 42, the parallelism adjustment component 42 includes a first connecting portion 421, a second connecting portion 422, a first adjusting member 423 and a second adjusting member 424, the turntable 41 is installed on the first connecting portion 421 and can rotate around the axis of the turntable 41 itself, the second connecting portion 422 is located at the bottom of the first connecting portion 421 and is installed on the workbench 20, the first adjusting member 423 is connected to the second connecting portion 422 and can be raised and lowered along the height direction of the workbench 20, the second adjusting member 424 is penetrated by the first connecting portion 421 to fix the first connecting portion 421 to the top of the first adjusting member 423, wherein the first adjusting member 423 is raised and lowered along the height direction of the base 10 to drive the turntable 41 to rise and fall to adjust the parallelism between the table surface 411 of the turntable 41 and the end face 311 of the spindle 31.

[0047] In the present application, the operator can adjust the parallelism between the table 411 of the turntable 41 and the end face 311 of the spindle 31 through the first adjusting member 423 and the second adjusting member 424. In actual use, when the operator finds that the parallelism between the table 411 of the turntable 41 and the end face 311 of the spindle 31 does not meet the requirements, the operator can first adjust the second adjusting member 424 at the required adjustment position along the end away from the top of the first adjusting member 423, so that a gap can be formed between the top of the first adjusting member 423 and the top of the second adjusting member 424 at the corresponding position for the first connecting portion 421 to move along the height direction of the workbench 20. Then the first adjusting member 423 is raised and lowered along the height direction of the workbench 20, and the adjustment of the first adjusting member 423 is stopped when the parallelism between the table 411 of the turntable 41 and the end face 311 of the spindle 31 meets the requirements. Finally, the operator can adjust the second adjusting member 424 along one end close to the top of the first adjusting member 423 so that the top of the second adjusting member 424 can be tightly fitted with the first connecting portion 421, so that the first connecting portion 421 can be fixed to the top of the first adjusting member 423, thereby completing the parallelism adjustment between the table top 411 of the turntable 41 and the end face 311 of the spindle 31, so that the parallelism between the table top 411 of the turntable 41 and the end face 311 of the spindle 31 meets the use requirements of the machine tool, so that the machine tool can perform subsequent processing operations.

[0048] That is to say, compared with the existing machine tools, the machine tool of the present application can simplify the previously complicated parallelism adjustment operation process through a simple structural design, has the advantage of easy operation, and can improve the adjustment efficiency of the turntable parallelism to a certain extent.

[0049] In addition, in this embodiment, the axial direction of the spindle 31, the height direction of the base 10, and the height direction of the workbench 20 are all Figure 1 In other embodiments of the present application, the axial direction of the spindle 31, the height direction of the base 10, and the height direction of the worktable 20 may not be in the same straight line. In this case, if it is necessary to adjust the parallelism between the table 411 of the turntable 41 and the end face 311 of the spindle 31, the parallelism adjustment component 42 of the present application can be reasonably adjusted according to actual needs so that the parallelism adjustment component 42 can meet the changes in the machine tool structure.

[0050] Further, see Figures 2 to 5 , Fig. 9As shown, the first adjusting member 423 and the second adjusting member 424 include a plurality of them respectively, and the first adjusting member 423 and the second adjusting member 424 are arranged one by one, and the plurality of first adjusting members 423 are arranged at intervals on the second connecting portion 422 in the circumferential direction of the second connecting portion 422, and the first adjusting member 423 is located between the second connecting portion 422 and the first connecting portion 421. The plurality of second adjusting members 424 are arranged at intervals on the first connecting portion 421 in the circumferential direction of the first connecting portion 421.

[0051] Specifically, the circumferential direction of the second connection portion 422 and the circumferential direction of the first connection portion 421 are Figure 3 In the present application, the reason why a plurality of first adjusting members 423 are arranged at intervals around the circumferential direction of the second connecting portion 422 is that such an arrangement can adjust the circumferential direction of the turntable 41 (i.e. Figure 3 Each position on the turntable 41 (direction indicated by a in the figure) is relative to the height of the workbench 20, so that the parallelism between the table 411 of the turntable 41 and the end face 311 of the spindle 31 meets the requirement. In actual operation, the operator can measure the parallelism between the table 411 of the turntable 41 and the end face 311 of the spindle 31 by means of a device such as a micrometer (not shown in the figure). If it is found that a certain position of the table 411 of the turntable 41 is too close or too far relative to the end face 311 of the spindle 31, the first adjustment member 423 below the corresponding position of the turntable 41 can be adjusted to descend or ascend along the height direction of the workbench 20, so that the table 411 of the turntable 41 and the end face 311 of the spindle 31 can be made parallel to each other. In addition, in the present application, the reason why multiple second adjusting members 424 are arranged at intervals on the first connecting part 421 in the circumferential direction of the first connecting part 421, and the first adjusting members 423 and the second adjusting members 424 are arranged one by one, is because such an arrangement method allows the operator to fix the first connecting part 421 on the first adjusting member 423 through the second adjusting member 424 after adjusting the table 411 of the turntable 41 to be parallel to the end face 311 of the main shaft 31.

[0052] Further, see Figure 5 and Fig. 9As shown, the first adjusting member 423 is provided with a first threaded hole 4231 and an external thread 4232, and the first threaded hole 4231 is located at the top of the first adjusting member 423 and extends along the height direction of the workbench 20. The second connecting portion 422 is provided with a second threaded hole 4221, and the first adjusting member 423 includes a plurality of second threaded holes 4221, and the second threaded holes 4221 correspond to the first adjusting member 423 one by one, and the first adjusting member 423 is penetrated in the second threaded hole 4221 through the external thread 4232. The first connecting portion 421 is provided with a plurality of connecting holes 4211, and the plurality of connecting holes 4211 are evenly spaced along the circumferential direction of the first connecting portion 421, and correspond to the first threaded holes 4231 one by one. Among them, the second adjusting member 424 is penetrated in the corresponding connecting holes 4211 and the first threaded holes 4231 to fix the first connecting portion 421 to the top of the first adjusting member 423.

[0053] Specifically, the second adjusting member 424 may be a structure such as a screw, a stud, and a bolt, and the connecting hole 4211 may be a through hole without a thread, and a transition fit may be adopted between the connecting hole 4211 and the second adjusting member 424. Moreover, in order to facilitate the removal of the second adjusting member 424 from the first connecting portion 421 and to avoid the interference of the first connecting portion 421 with the lifting and lowering of the first adjusting member 423 during the adjustment of the first adjusting member 423, the machine tool of the present application will reasonably select the tolerance of the transition fit between the connecting hole 4211 and the second adjusting member 424 when designing, so as to prevent the connecting hole 4211 and the second adjusting member 424 from having an excessive interference or an excessive gap. If an excessive interference fit is produced between the connecting hole 4211 and the second adjusting member 424, it is difficult to adjust the second adjusting member 424 along the height direction of the workbench 20 when the first adjusting member 423 needs to be adjusted, thereby reducing the parallelism adjustment efficiency of the turntable 41. If there is too much clearance between the connecting hole 4211 and the second adjusting member 424, the first connecting portion 421 and the second adjusting member 424 may easily move laterally during the operation of the machine tool, resulting in unreliable fixation of the first connecting portion 421, thereby affecting the parallelism between the table 411 of the turntable 41 and the end face 311 of the spindle 31. In addition, the setting of the external thread 4232 allows the operator to lower or raise the height of the turntable 41 at the position of the first adjusting member 423 when tightening or loosening the first adjusting member 423, so that the parallelism between the table 411 of the turntable 41 and the end face 311 of the spindle 31 meets the requirements.

[0054] For example, this embodiment shows that the first threaded hole 4231 adopts M16 standard internal thread and the external thread 4232 adopts M30×1.5 fine pitch thread. In this application, the sizes of the first threaded hole 4231 and the external thread 4232 can be reasonably selected according to actual needs. In addition, the operator can adjust the parallelism adjustment accuracy of the turntable 41 by changing the pitch of the external thread 4232. The smaller the pitch of the external thread 4232, the higher the adjustment accuracy of the parallelism of the table 411 of the turntable 41 relative to the end face 311 of the spindle 31.

[0055] Further, see Figure 5 , Figure 7 as well as Figure 8 As shown, the parallelism adjustment component 42 further includes a support member 425, and a positioning hole 4222 is provided on the second connection portion 422. The positioning hole 4222 penetrates the second connection portion 422 along the height direction of the workbench 20, and the axis of the positioning hole 4222 coincides with the central axis of the turntable 41, and the support member 425 is fixedly connected to a side of the workbench 20 close to the first connection portion 421, and the support member 425 is installed in the positioning hole 4222 and supported at the bottom of the first connection portion 421.

[0056] Specifically, the support member 425 can play a certain supporting role on the turntable 41, the parallelism adjustment component 42 and the workpiece to be processed (not shown in the figure) on the turntable 41, and can share a certain pressure for the first adjustment member 423 and the second adjustment member 424, thereby reducing the burden of the first adjustment member 423 and the second adjustment member 424. In this embodiment, since the connection between the first adjustment member 423 and the second adjustment member 424 and the connection between the first adjustment member 423 and the second connection part 422 are threaded connections, once the threaded connection is in the axial direction of the thread (i.e. Figure 1 If the force on the first connecting portion 421 (in the direction indicated by z in the figure) exceeds the limit of the threaded connection, the thread is easily damaged, causing the machine tool to be unable to adjust the parallelism of the turntable 41 normally. In addition, when the size of the first connecting portion 421 is large, if only the circumferential direction of the first connecting portion 421 (i.e. Figure 3 The combined structure of the first adjusting member 423 and the second adjusting member 424 on the turntable 41, the parallelism adjusting member 42 and the workpiece to be processed on the turntable 41 is used to support the turntable 41, the parallelism adjusting member 42 and the workpiece to be processed on the turntable 41, then the central area of ​​the first connecting portion 421 is easily moved along the height direction of the worktable 20 (i.e. Figure 1 The first connecting portion 421 may be dented in the direction indicated by z, thereby causing the first connecting portion 421 to be deformed and damaged, and even causing the table surface 411 of the turntable 41 and the end surface 311 of the spindle 31 to fail to meet the parallelism requirement.

[0057] Further, see Figure 5 , Figure 7 as well as Figure 8 As shown, the support member 425 and the positioning hole 4222 are in transition fit.

[0058] Specifically, in the present application, in order to avoid the cooperation between the support member 425 and the positioning hole 4222 with excessive interference or excessive clearance, the tolerance of the size of the support member 425 and the positioning hole 4222 can be reasonably selected during actual manufacturing. If there is an excessive interference fit between the support member 425 and the positioning hole 4222, it is difficult to separate the second connection part 422 from the support member 425 after the support member 425 and the positioning hole 4222 are matched. Even if the second connection part 422 and the support member 425 are separated by force, certain damage will be caused to the support member 425 or the positioning hole 4222, so that the support member 425 and the second connection part 422 cannot be used normally later. If there is an excessive clearance between the support member 425 and the positioning hole 4222, when the operator installs the second connection part 422, the support member 425 cannot play a good positioning role on the second connection part 422 on the workbench 20, resulting in a reduction in the installation efficiency of the parallelism adjustment component 42.

[0059] Further, see Figure 5 , Figure 7 as well as Figure 8 As shown, the support member 425 includes a support portion 4251 and a connection portion 4252. The support portion 4251 is provided with a convex arc surface 42511 for contacting the first connection portion 421, the center of the convex arc surface 42511 is located at a side away from the first connection portion 421, the connection portion 4252 is connected to a side of the support portion 4251 away from the first connection portion 421, and the support member 425 is fixedly connected to the workbench 20 through the connection portion 4252.

[0060] Specifically, the convex arc surface 42511 is convex toward the side close to the first connection part 421. The setting of the convex arc surface 42511 not only enables the support member 425 to have the function of adding a force fulcrum for the parallelism adjustment component 42, avoiding the first adjustment member 423 and the second adjustment member 424 from bending deformation or thread damage under long-term force, but also the convex arc surface 42511 can better assist the adjustment of the parallelism of the turntable 41. In this embodiment, because the contact between the convex arc surface 42511 and the first connection part 421 is the contact between the curved surface and the plane, such a contact mode enables the curved surface to still have effective contact with the straight surface when the plane is deflected relative to the curved surface. That is to say, after the operator raises and lowers the first adjustment member 423 in different directions of the circumferential direction of the first connection part 421 along the height direction of the workbench 20, the position of the first connection part 421 relative to the second connection part 422 changes. Since the support portion 4251 of the support member 425 adopts the convex arc surface 42511, when the first connection portion 421 is deflected by a certain angle relative to the second connection portion 422, there is still a position on the convex arc surface 42511 of the support portion 4251 that can contact the bottom of the first connection portion 421, thereby ensuring that the support member 425 can provide auxiliary support for the first connection portion 421 as the first connection portion 421 deflects.

[0061] Further, see Figure 5 , Figure 7 as well as Figure 8 As shown, a plurality of locking members 70 are arranged on the periphery of the connecting portion 4252, and the connecting portion 4252 is fixed to the workbench 20 by the locking members 70. The supporting member 425 is arranged in a cylindrical structure, and the supporting member 425 further includes an annular groove 4253, which is arranged around the periphery of the cylindrical structure and is located between the supporting portion 4251 and the connecting portion 4252.

[0062] Exemplarily, the number of the locking members 70 can be two, three, or more than three. This embodiment shows the case where the locking members 70 include four, and the four locking members 70 are evenly spaced along the circumferential direction of the support member 425. Such a setting makes the connection between the connecting portion 4252 and the workbench 20 more stable, so that the support member 425 can be better fixed on the workbench 20, thereby playing a better supporting and positioning role. In the present application, the support member 425 can be arranged in a cylindrical structure such as a cylindrical structure and a prismatic structure. This embodiment shows the case where the support member 425 is arranged in a roughly cylindrical shape. The present application sets an annular groove 4253 on the support member 425, which has two significant advantages. First, the annular groove 4253 can facilitate the operator to install the locking member 70 using an installation tool (not shown in the figure). Second, the setting of the annular groove 4253 allows the support member 425 to reserve an installation space for the installation of the locking member 70 in a limited space, and can also save production materials to a certain extent and reduce production costs.

[0063] Further, see Figures 1 to 4 As shown, the turntable mechanism 40 further includes a plurality of hanging rings 43 , which are evenly spaced on the second connecting portion 422 along the circumferential direction of the second connecting portion 422 , and the hanging rings 43 are close to the edge of the second connecting portion 422 .

[0064] Specifically, the circumferential direction of the second connecting portion 422 is Figure 3The direction indicated by a in the figure. The setting of the lifting ring 43 is mainly for the operator to lift and transfer the turntable mechanism 40 from the machine tool through the lifting ring 43 when the turntable mechanism 40 needs to be transferred from the machine tool. In the present application, there can be two, three or more lifting rings 43. Considering that when there are two lifting rings 43, the turntable mechanism 40 may be offset or fall after being lifted, the machine tool of the present application generally sets the number of lifting rings 43 to no less than three during actual manufacturing, so as to ensure that the turntable mechanism 40 can maintain balance in the air when being lifted. This embodiment shows the case where there are three lifting rings 43, and the three lifting rings 43 are arranged at intervals of 120° along the circumferential direction of the second connecting portion 422. In actual use, after the turntable mechanism 40 is installed on the machine tool and the parallelism between the table 411 of the turntable 41 and the end face 311 of the spindle 31 is adjusted, the operator can remove the entire turntable mechanism 40 from the workbench 20 of the machine tool through the three lifting rings 43 arranged in the circumferential direction of the second connecting portion 422, and then lift the turntable mechanism 40 back to the workbench 20 through the lifting rings 43 when the turntable mechanism 40 is needed. Such a setting makes the disassembly and installation of the turntable mechanism 40 very convenient and efficient. After the lifted turntable mechanism 40 is reinstalled on the workbench 20, even if there is a deviation in the parallelism between the table 411 of the turntable 41 and the end face 311 of the spindle 31, only a slight fine adjustment is needed to meet the requirements again, which can greatly shorten the flatness adjustment time of the turntable 41. Therefore, the design of the lifting ring 43 can also improve the parallelism adjustment efficiency of the turntable 41 to a certain extent, and can also solve the problem of inconvenient disassembly and assembly of the turntable 41.

[0065] Further, see Figures 1 to 6 As shown, the first connection part 421 includes a first connection plate, the second connection part 422 includes a second connection plate, the turntable 41 is detachably mounted on the first connection plate via a first fixing member 50 , and the second connection plate is detachably mounted on the workbench 20 via a second fixing member 60 .

[0066] Specifically, the first fixing member 50 includes a plurality of first fixing members 50, and the first fixing members 50 are arranged around the circumferential direction of the turntable 41 (ie, Figure 3The first connecting member 421 is evenly spaced around the outer edge of the first connecting plate, and the present embodiment shows the case where there are 12 first fixing members 50. The turntable 41 is detachably mounted on the first connecting plate by the first fixing member 50, so that a part of the gravity of the turntable 41 and the workpiece to be processed (not shown in the figure) thereon can be evenly distributed on the first connecting portion 421, and finally transferred to the workbench 20 through the second connecting portion 422. Since the present application also sets a support member 425 between the workbench 20 and the first connecting portion 421, another part of the gravity of the turntable 41 and the workpiece to be processed thereon can be transferred to the workbench 20 through the support member 425. In addition, in the present application, the detachable setting of the turntable 41 not only allows the turntable 41 to be detached from the parallelism adjustment component 42 when it is not used for a long time, thereby reducing the force on the parallelism adjustment component 42, but also allows the operator to use the parallelism adjustment component 42 of the present application to adjust the parallelism between the table 411 of the turntable 41 and the end face 311 of the spindle 31 when other types of turntables are selected according to actual needs. Moreover, in the present application, the second connecting plate is detachably mounted on the workbench 20 through the second fixing member 60, so that when the machine tool needs to install components other than the turntable 41 to work, the operator can remove the turntable mechanism 40 as a whole from the workbench 20 of the machine tool and move it away. When the turntable 41 is needed again, the operator can quickly install the turntable mechanism 40 through the second fixing member 60, which can greatly improve work efficiency.

[0067] Alternatively, see Figures 1 to 6 As shown, the second connection part 422 is set in a disc shape, and the second fixing member 60 is evenly spaced around the circumferential direction of the second connection part 422. Specifically, in this embodiment, the second fixing member 60 can be a combination structure of a stud 61 and a nut 62. In order to prevent the stud 61 and the nut 62 from loosening and causing the connection between the second connection part 422 and the workbench 20 to be unreliable, a gasket 63 is also set between the stud 61 and the nut 62 in this embodiment. In other embodiments of the present application, the second fixing member 60 can be a bolt or other structure. In the present application, there are multiple second fixing members 60. This embodiment shows that there are eight second fixing members 60. In other embodiments of the present application, the number of second fixing members 60 can also be nine, ten, and more than ten. In addition, the arrangement of the second fixing members 60 evenly spaced around the circumferential direction of the second connection part 422 can not only better fix the second connection part 422 on the workbench 20, but also ensure that the force on the second connection part 422 is uniform, reducing the damage to the machine tool due to stress concentration.

[0068] Further, see Figures 3 to 5 , Fig. 9As shown, the parallelism adjustment component 42 further includes a locking member 426 , and the locking member 426 is sleeved on the first adjustment member 423 to lock the first adjustment member 423 to the second connection portion 422 .

[0069] Specifically, the function of the locking member 426 is to prevent the first adjusting member 423 from loosening with the second connecting portion 422, thereby ensuring that the parallelism between the table 411 of the turntable 41 and the end face 311 of the spindle 31 meets the requirements, thereby ensuring the machining accuracy of the machine tool. This embodiment shows that the locking member 426 is a nut. In other embodiments of the present application, the locking member 426 can also be a structure with a locking function such as a self-locking nut. In actual work, the operator adjusts the first adjusting member 423 in different directions of the circumferential direction of the first connecting portion 421 so that the parallelism between the table 411 of the turntable 41 and the end face 311 of the spindle 31 meets the requirements, and then the first adjusting member 423 can be firmly locked on the second connecting portion 422 by tightening the locking member 426 corresponding to each first adjusting member 423. In this way, even if the machine tool vibrates during operation, the first adjusting member 423 will not be easily loosened from the second connecting portion 422, thereby ensuring the reliability of the parallelism adjustment component 42.

[0070] From the above statements, it can be known that the present application can at least solve the problems of low efficiency of parallelism adjustment of the turntable and inconvenient assembly and disassembly of the turntable by designing a machine tool composed of a base 10, a worktable 20, a support frame 30, a turntable mechanism 40, a first fixing member 50, a second fixing member 60 and a locking member 70. The turntable 41 is fixed on the first connecting portion 421, and then locked on the first adjusting member 423 through a plurality of first fixing members 50, and then the first adjusting member 423 is locked on the second connecting portion 422 through an external thread 4232, and the second connecting portion 422 is locked on the machine tool worktable 20 through a plurality of second fixing members 60, thereby ensuring the reliability of the parallelism adjustment component 42. In addition, the connecting portion 4252 of the support member 425 is fixed on the workbench 20, and the supporting portion 4251 of the support member 425 supports the first connecting portion 421 through the convex arc surface 42511 to provide support for the turntable 41, and the convex arc surface 42511 is a spherical contact, which is convenient for adjusting the position, so as to adjust the parallelism of the turntable 41, and the radius R of the convex arc surface 42511 can be reasonably adjusted according to the size of the turntable 41. When it is necessary to adjust the parallelism of the turntable, the micrometer is installed on the end face 311 of the spindle 31, and then the probe of the micrometer is placed on the turntable 41 to measure the parallelism of the turntable plane. According to the measurement results, the operator can adjust the first adjustment member 423 at the corresponding position. Before adjusting the first adjusting member 423, it is necessary to loosen the locking member 426 by a certain amount, turn the first adjusting member 423, and adjust the up and down position of the first adjusting member 423 according to the measurement of the micrometer, thereby driving the turntable 41 at the corresponding position to rise and fall, thereby playing a role in quickly adjusting the parallelism of the turntable 41. When the parallelism of the turntable 41 meets the requirements, the operator can lock the first adjusting member 423 by turning the locking member 426, thereby ensuring that the parallelism of the turntable 41 remains unchanged during the working process. In addition, the turntable mechanism 40 of the present application adopts a modular design and can be hoisted as a whole. When the turntable mechanism 40 needs to be disassembled from the workbench 20, it only needs to loosen the second fixing member 60 to hoist it as a whole through the lifting ring 43.

[0071] That is to say, the machine tool of the present application can improve the parallelism adjustment efficiency between the table surface of the turntable 41 and the end surface 311 of the spindle 31 through the parallelism adjustment component 42, and also make the disassembly and assembly of the turntable 41 more convenient, with the advantages of reliable structure and convenient adjustment.

[0072] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0073] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0074] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A machine tool, characterized in that: include: Base (10); A workbench (20), wherein the workbench (20) is installed on the base (10); A support frame (30), the support frame (30) is mounted on the base (10) and is located on the outer peripheral side of the workbench (20), and a main shaft (31) is provided on the support frame (30), the axial direction of the main shaft (31) extends along the height direction of the base (10), and the main shaft (31) is located above the workbench (20); A turntable mechanism (40), the turntable mechanism (40) comprising a turntable (41) and a parallelism adjustment component (42), the parallelism adjustment component (42) comprising a first connecting portion (421), a second connecting portion (422), a first adjustment member (423) and a second adjustment member (424), the turntable (41) being mounted on the first connecting portion (421) and being rotatable around the axis of the turntable (41), the second connecting portion (422) being located at the bottom of the first connecting portion (421) and being mounted on the workbench (20), the first connecting portion (422) being arranged at the bottom of the first connecting portion (421) and being arranged on the workbench (20), and the second connecting portion (422) being arranged at the bottom of the first connecting portion (421) and being arranged on the workbench (20). An adjusting member (423) is connected to the second connecting portion (422) and can be raised and lowered along the height direction of the workbench (20); the second adjusting member (424) is passed through the first connecting portion (421) to fix the first connecting portion (421) to the top of the first adjusting member (423); wherein the first adjusting member (423) is raised and lowered along the height direction of the base (10) to drive the turntable (41) to rise and fall so as to adjust the parallelism between the table surface (411) of the turntable (41) and the end surface (311) of the spindle (31).

2. The machine tool according to claim 1, characterized in that: The first adjusting member (423) and the second adjusting member (424) respectively include a plurality of the first adjusting member (423) and the second adjusting member (424) are arranged one by one, the plurality of the first adjusting members (423) are arranged at intervals on the second connecting portion (422) in a circumferential direction of the second connecting portion (422), and the first adjusting member (423) is located between the second connecting portion (422) and the first connecting portion (421); A plurality of second adjusting members (424) are arranged on the first connecting portion (421) at intervals in a circumferential direction of the first connecting portion (421).

3. The machine tool according to claim 1, characterized in that: The first adjusting member (423) is provided with a first threaded hole (4231) and an external thread (4232), wherein the first threaded hole (4231) is located at the top of the first adjusting member (423) and extends along the height direction of the workbench (20); The second connecting portion (422) is provided with a second threaded hole (4221), the first adjusting member (423) includes a plurality of second threaded holes (4221) and the first adjusting members (423) correspond one to one, and the first adjusting member (423) is inserted into the second threaded hole (4221) through the external thread (4232); The first connecting portion (421) is provided with a plurality of connecting holes (4211), and the plurality of connecting holes (4211) are evenly spaced along the circumferential direction of the first connecting portion (421) and correspond one-to-one to the first threaded holes (4231); Wherein, the second adjusting member (424) is inserted into the corresponding connecting hole (4211) and the first threaded hole (4231) to fix the first connecting portion (421) to the top of the first adjusting member (423).

4. The machine tool according to claim 1, characterized in that: The parallelism adjustment component (42) further comprises a support member (425), and a positioning hole (4222) is provided on the second connection portion (422); The positioning hole (4222) passes through the second connecting portion (422) along the height direction of the workbench (20), and the axis of the positioning hole (4222) coincides with the central axis of the turntable (41), the support member (425) is fixedly connected to a side of the workbench (20) close to the first connecting portion (421), and the support member (425) is installed in the positioning hole (4222) and supported on the bottom of the first connecting portion (421).

5. The machine tool according to claim 4, characterized in that: The support member (425) and the positioning hole (4222) are in transitional fit.

6. The machine tool according to claim 4, characterized in that: The support member (425) comprises a support portion (4251) and a connection portion (4252); The support portion (4251) is provided with a convex arc surface (42511) for contacting the first connecting portion (421), the center of the convex arc surface (42511) is located on the side away from the first connecting portion (421), the connecting portion (4252) is connected to the side of the support portion (4251) away from the first connecting portion (421), and the support member (425) is fixedly connected to the workbench (20) via the connecting portion (4252).

7. The machine tool according to claim 6, characterized in that A plurality of locking members (70) are provided on the outer periphery of the connecting portion (4252), and the connecting portion (4252) is fixed to the workbench (20) through the locking members (70); The support member (425) is arranged in a columnar structure, and the support member (425) further includes an annular groove (4253), wherein the annular groove (4253) is arranged around the outer circumference of the columnar structure and is located between the support portion (4251) and the connecting portion (4252).

8. The machine tool according to claim 1, characterized in that: The turntable mechanism (40) further comprises a plurality of hanging rings (43), wherein the plurality of hanging rings (43) are evenly spaced on the second connecting portion (422) along the circumferential direction of the second connecting portion (422), and the hanging rings (43) are close to the edge of the second connecting portion (422).

9. The machine tool according to any one of claims 1 to 8, characterized in that The first connecting portion (421) includes a first connecting plate, the second connecting portion (422) includes a second connecting plate, the turntable (41) is detachably mounted on the first connecting plate via a first fixing member (50), and the second connecting plate is detachably mounted on the workbench (20) via a second fixing member (60); and / or, The second connecting portion (422) is arranged in a disc shape, and the second fixing members (60) are arranged at even intervals in a circumferential direction of the second connecting portion (422).

10. The machine tool according to any one of claims 1 to 8, characterized in that The parallelism adjustment component (42) further comprises a locking member (426), wherein the locking member (426) is sleeved on the first adjustment member (423) to lock the first adjustment member (423) to the second connection portion (422).

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