Machine tool main body structure with adjustable and stable workbench

Abstract

The utility model discloses a machine tool main body structure with an adjustable and stable workbench, which belongs to the field of numerical control machine tools, and comprises a machine tool main body frame, a main body base is fixed on the machine tool main body frame, two upright post bases are arranged on the main body base, and the two upright post bases can support a cradle turntable. The bottoms of the supporting shells at the two ends of the cradle rotary table are detachably installed on the upper end faces of the two stand column bases. An auxiliary supporting frame is arranged on the front side of the upper portion of the machine tool body frame and comprises two lower supporting legs, and the lower end faces of the two lower supporting legs can be detachably connected with the upper ends of supporting shells at the two ends of the cradle rotary table. By means of the structure, it is guaranteed that the installation position of the cradle rotary table is adjustable, and meanwhile higher bed body stability is achieved.

Description

Technical Field

[0001] The utility model relates to the field of numerical control machine tools, in particular to a machine tool main body structure with an adjustable working table and stability. Background Art

[0002] The machine tool base is the largest, heaviest and most important frame of the machine tool. Its structure not only determines the main operating mode of the machine tool, but also directly affects the machining accuracy of the machine tool.

[0003] At present, various industries are pursuing a higher degree of automation, and a variety of parts processing are gradually realizing automated production. At this time, corresponding machine tools are needed to meet the professional processing needs of different parts. Therefore, higher requirements are placed on machine tools, not only to meet the accuracy but also to meet the improvement of processing efficiency. In order to allow machine tools to have more application scenarios, machine tool structures with adjustable assembly have also been developed. However, the adjustable machine tool working structure will inevitably sacrifice part of the machine tool's accuracy.

[0004] In the horizontal machining center, the cradle turntable is one of the core components of the machine tool as a processing table. It can help the machine tool achieve multi-axis linkage and enable the machine tool to process more complex parts. The span, installation position and installation method of the turntable determine the size, type and precision of the workpiece to be processed.

[0005] For the processing of large parts, not only does the cradle turntable need to have a larger span, but also has higher requirements for its installation position. At present, the installation form of large-span turntables on the market is all integrated, that is, the installation surface of the turntable is fixed, and the turntable is fixed to the machine tool bed with a welded structure. Because the position of the turntable is fixed, higher requirements are put forward for the type of workpiece to be processed and the design of special fixtures, especially for some large workpieces, which may cause position interference during processing, or even be unable to be processed.

[0006] In view of the problems that the current cradle turntable is fixed in position, which affects the processing range of the workpiece and makes clamping difficult, the utility model designs and manufactures a machine tool main body structure with an adjustable workbench and stability to overcome the above defects. Utility Model Content

[0007] In order to solve the problems existing in the prior art, the utility model provides a machine tool main body structure with an adjustable workbench and stability, which ensures that the installation position of the cradle turntable is adjustable and has higher bed stability.

[0008] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: a machine tool main body structure with an adjustable and stable workbench, comprising a machine tool main body frame, a main body base is fixed on the machine tool main body frame, two column bases are arranged on the main body base, the two column bases can support a cradle turntable, and the bottom of the support shell at both ends of the cradle turntable can be detachably mounted on the upper end surfaces of the two column bases;

[0009] An auxiliary support frame is arranged on the front side above the main frame of the machine tool. The auxiliary support frame comprises two lower legs. The lower end surfaces of the two lower legs can be detachably connected to the upper ends of the support shells at both ends of the cradle turntable.

[0010] Preferably, the upper end surface of the column base is provided with a plurality of groups of mounting holes, the plurality of groups of mounting holes are arranged front and back, and each group of the mounting holes can be connected to the supporting shell.

[0011] Preferably, a positioning block is provided on the front side or the rear side of each group of mounting holes, and a plurality of groups of positioning block connecting holes are provided on the upper end surface of the column base, and the positioning block is installed on the upper end surface of the column base through the positioning block connecting holes;

[0012] The positioning block can abut against the front side elevation or the rear side elevation of the supporting shell.

[0013] Preferably, the upper end surface of the column base is further provided with an upper positioning groove, and the upper positioning groove is arranged along the front-back direction;

[0014] The bottom of the supporting shell is provided with a lower positioning groove corresponding to the upper positioning groove.

[0015] Preferably, the upper end of the auxiliary support frame is detachably connected to the front side of the beam above the main frame of the machine tool.

[0016] Preferably, the auxiliary support frame includes two horizontal support frames, the two horizontal support frames extend toward the upper front side of the machine tool main frame, and the two lower legs are respectively fixedly connected to the ends of the horizontal support frames.

[0017] Preferably, the two horizontal support frames are respectively close to two columns of the machine tool main frame.

[0018] Preferably, the front ends of the two horizontal support frames are connected by a supporting crossbeam;

[0019] Support ribs are arranged between the horizontal support frame and the lower support legs.

[0020] Preferably, the two column bases are connected via a concave reinforcing rib, and the concave reinforcing rib is fixed on the main body base.

[0021] Preferably, the concave reinforcing ribs are higher at both ends and lower in the middle, and two concave reinforcing ribs are arranged at the front and back.

[0022] The utility model is beneficial in that:

[0023] 1. The utility model connects and fixes the supporting shells at both ends of the cradle turntable through the column base at the bottom and the auxiliary support frame at the top. On the one hand, it can increase the connection strength of the cradle turntable and enhance its stability during the processing. On the other hand, the overall force-bearing frame connected by the above structure is rectangular, forming a closed loop of force transmission, which can further improve the stability of the machine tool during the processing. In addition, the above split structure is convenient for disassembly and installation.

[0024] 2. When the Z axis of the machine tool of the utility model extends out to process the workpiece, the main frame of the machine tool will have a tendency to tilt forward. The auxiliary support can transfer the forward tilting force of the upper crossbeam of the machine tool to the main base, effectively reducing the deformation of the overall forward tilting tendency of the main structure of the machine tool.

[0025] 3. The utility model utilizes a plurality of groups of mounting holes and detachable positioning blocks at the corresponding positions of each group of mounting holes, so as to realize the front and rear position adjustment of the cradle turntable, thereby realizing a wider range of processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of a main structure of a machine tool with an adjustable and stable workbench;

[0027] Figure 2 A schematic diagram of a machine tool main structure with an adjustable and stable workbench without an auxiliary support frame;

[0028] Figure 3 This is a schematic diagram of the structure of the auxiliary support frame of the utility model;

[0029] Figure 4 It is a side view of the auxiliary support frame of the utility model;

[0030] Figure 5 It is a schematic diagram of the structure on the upper end surface of the column base of the utility model;

[0031] Figure 6 This is a schematic diagram of the cradle turntable of the utility model being located in the middle of the column base;

[0032] Figure 7 This is a schematic diagram of the cradle turntable of the utility model being located in front of the column base;

[0033] Figure 8 It is a schematic diagram showing that the cradle turntable of the utility model is located behind the column base.

[0034] In the figure: 1-machine tool main frame, 2-main body base, 3-column base, 4-concave reinforcing ribs, 5-positioning blocks, 6-auxiliary support frame, 7-crossbeam, 8-support shell, 61-horizontal support frame, 62-lower support leg, 63-support crossbeam, 64-support ribs. DETAILED DESCRIPTION

[0035] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0036] like Figures 1 to 8 As shown, a machine tool main body structure with an adjustable and stable workbench includes a machine tool main frame 1, a main body base 2 is fixed on the machine tool main frame 1, two column bases 3 are provided on the main body base 2, the two column bases 3 can support a cradle turntable, and the bottom of the supporting shell 8 at both ends of the cradle turntable can be detachably mounted on the upper end surfaces of the two column bases 3.

[0037] An auxiliary support frame 6 is provided on the front side above the main frame 1 of the machine tool, and the auxiliary support frame 6 includes two lower legs 62. The lower end surfaces of the two lower legs 62 can be detachably connected to the upper ends of the support shells 8 at both ends of the cradle turntable. Specifically, the auxiliary support frame 6 includes two horizontal support frames 61. The two horizontal support frames 61 are preferably respectively close to the two columns of the main frame 1 of the machine tool. The front ends of the two horizontal support frames 61 are connected by a supporting beam 763. The two horizontal support frames 61 extend toward the front side above the main frame 1 of the machine tool. The two lower legs 62 are respectively fixedly connected to the ends of the horizontal support frames 61, so that the overall appearance is L-shaped when viewed from the side. Support ribs 64 are provided between the horizontal support frames 61 and the lower legs 62 to enhance the structural rigidity.

[0038] The utility model connects and fixes the supporting shells 8 at both ends of the cradle turntable through the bottom column base 3 and the upper auxiliary support frame 6. On the one hand, it can increase the connection strength of the cradle turntable and enhance its stability during the processing. On the other hand, the overall force-bearing frame connected by the above structure is rectangular, forming a closed loop of force transmission, which can further improve the stability of the machine tool during the processing.

[0039] In addition, since the Z axis of the machine tool will cause the main frame 1 of the machine tool to have a forward tilting tendency when protruding out to process the workpiece, the auxiliary support can also transfer the forward tilting force of the upper crossbeam 7 of the machine tool to the main base 2, effectively reducing the deformation of the overall forward tilting tendency of the main structure of the machine tool.

[0040] The upper end surface of the column base 3 of the utility model is provided with a plurality of groups of mounting holes, and the plurality of groups of mounting holes are arranged front and rear, and each group of mounting holes can be connected to the support shell 8. A positioning block 5 is arranged on the front side or the rear side of each group of mounting holes, and the upper end surface of the column base 3 is provided with a plurality of groups of positioning block 5 connecting holes, and the positioning block 5 is installed on the upper end surface of the column base 3 through the positioning block 5 connecting holes, and the positioning block 5 can be against the front side elevation surface or the rear side elevation surface of the support shell 8.

[0041] By utilizing several groups of mounting holes and removable positioning blocks 5 at the corresponding positions of each group of mounting holes, the front and rear position of the cradle turntable can be adjusted, thereby achieving a wider range of processing. The upper end of the auxiliary support frame 6 is detachably connected to the front side of the crossbeam 7 above the main frame 1 of the machine tool, and the split structure facilitates later installation and disassembly.

[0042] The upper end surface of the column base 3 of the utility model is also provided with an upper positioning groove, which is arranged along the front-to-back direction. The bottom of the support shell 8 is provided with a lower positioning groove corresponding to the upper positioning groove. The upper positioning groove and the lower positioning groove are aligned, thereby improving the installation accuracy.

[0043] The two column bases 3 are preferably connected by a concave reinforcing rib 4, and the concave reinforcing rib 4 is fixed on the main base 2. The concave reinforcing rib has the function of stabilizing the column. During the actual processing process, the column base 3 will be subjected to forces from other directions in addition to the downward force. The concave reinforcing rib 4 can effectively strengthen the rigidity of the column base 3 itself and reduce the risk of deformation of the column base 3.

[0044] Specifically, the concave reinforcing ribs 4 are high at both ends and low in the middle, which can avoid interference during the movement of the cradle turntable. Two concave reinforcing ribs 4 are set at the front and back, which can increase the supporting area with the column base 3 and effectively prevent the column base 3 from being deformed by force.

[0045] It should be understood that the purpose of these embodiments is only to illustrate the utility model and is not intended to limit the protection scope of the utility model. In addition, it should also be understood that after reading the technical content of the utility model, those skilled in the art can make various changes, modifications and / or variations to the utility model, and all of these equivalent forms also fall within the protection scope defined by the claims attached to this application.

Claims

1. A machine tool main structure with an adjustable and stable workbench, characterized in that: The machine tool comprises a main frame (1), a main body base (2) being fixed on the main frame (1), two column bases (3) being provided on the main body base (2), the two column bases (3) being capable of supporting a cradle turntable, and the bottoms of the supporting shells (8) at both ends of the cradle turntable being detachably mounted on the upper end surfaces of the two column bases (3); An auxiliary support frame (6) is provided on the front upper side of the main machine tool frame (1), and the auxiliary support frame (6) comprises two lower legs (62), and the lower end surfaces of the two lower legs (62) can be detachably connected to the upper ends of the support shells (8) at the two ends of the cradle turntable.

2. The main structure of a machine tool with an adjustable and stable workbench according to claim 1, characterized in that: The upper end surface of the column base (3) is provided with a plurality of groups of mounting holes, the plurality of groups of mounting holes being arranged front and rear, and each group of the mounting holes can be connected to the supporting shell (8).

3. The main structure of a machine tool with an adjustable and stable workbench according to claim 1, characterized in that: A positioning block (5) is provided on the front side or the rear side of each group of mounting holes, and a plurality of groups of positioning block (5) connecting holes are provided on the upper end surface of the column base (3), and the positioning block (5) is mounted on the upper end surface of the column base (3) through the positioning block (5) connecting holes; The positioning block (5) can abut against the front side elevation or the rear side elevation of the supporting shell (8).

4. The main structure of a machine tool with an adjustable and stable workbench according to claim 1, characterized in that: The upper end surface of the column base (3) is also provided with an upper positioning groove, and the upper positioning groove is arranged along the front-back direction; The bottom of the supporting shell (8) is provided with a lower positioning groove corresponding to the upper positioning groove.

5. The main structure of a machine tool with an adjustable and stable workbench according to claim 1, characterized in that: The upper end of the auxiliary support frame (6) is fixedly connected to the front side of the crossbeam (7) above the main frame (1) of the machine tool.

6. The main structure of a machine tool with an adjustable and stable workbench according to claim 1, characterized in that: The auxiliary support frame (6) comprises two horizontal support frames (61), the two horizontal support frames (61) extending in an upper front direction of the machine tool main frame (1), and the two lower legs (62) are respectively fixedly connected to the ends of the horizontal support frames (61).

7. The main structure of a machine tool with an adjustable and stable workbench according to claim 6, characterized in that: The two horizontal support frames (61) are respectively close to two upright columns of the machine tool main frame (1).

8. The main structure of a machine tool with an adjustable and stable workbench according to claim 6, characterized in that: The front ends of the two horizontal support frames (61) are connected via a supporting crossbeam (63); Support ribs (64) are provided between the horizontal support frame (61) and the lower support leg (62).

9. The main structure of a machine tool with an adjustable and stable workbench according to claim 1, characterized in that: The two column bases (3) are connected via a concave reinforcing rib (4), and the concave reinforcing rib (4) is fixed on the main body base (2).

10. The main structure of a machine tool with an adjustable and stable workbench according to claim 9, characterized in that: The concave reinforcing rib (4) is high at both ends and low in the middle, and two concave reinforcing ribs (4) are arranged at the front and rear.

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