Machine tool closed frame and machining machine tool

Abstract

The utility model relates to a machine tool closed frame and a processing machine tool, belongs to the technical field of processing machine tool structures, and solves the problems that a machine tool frame in the prior art is poor in force and heat symmetry and balance characteristics, weak in structural rigidity and small in strength. The utility model relates to a closed frame of a machine tool, which adopts a closed integral frame structure and comprises four upright posts, four cross beams and a base, each stand column is fixedly connected with the two cross beams; the four stand columns and the four cross beams are integrally and symmetrically arranged on the base. The utility model adopts a closed integral frame structure, can simplify the maintenance and cleaning work of a machine tool, and has the characteristic of force-heat balance.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of machine tool structure, specifically relates to a machine tool closed frame and processing machine tool. BACKGROUND

[0002] With the continuous development of manufacturing industry, as the core equipment in the manufacturing process, the structure design of machine tool has been greatly improved from the initial simple mechanical structure to the present high-precision, high-rigidity and multi-functional structure design. The closed frame machine tool structure can significantly improve the rigidity and stability of the machine tool. In the working process of the machine tool, the cutting force, the gravity of the machine tool itself and the heat generated by the movement will all affect the machining precision and the service life of the machine tool. In order to realize high-precision machining, the machine tool structure needs to effectively disperse the cutting force and heat, and maintain the stability and precision of the machine tool. Therefore, the force and heat balance has become an important consideration factor in the design of machine tool structure. As an important equipment in modern manufacturing industry, the numerical control machining center puts forward higher requirements for the structure design of machine tool. In order to meet the processing demand of high precision and high efficiency, the closed frame machine tool structure with force and heat balance characteristics emerges as the times require. With the development of manufacturing industry, multi-spindle machining technology has been widely applied. The multi-spindle machining center can realize the simultaneous machining of multiple workpieces, and significantly improve the production efficiency. However, multi-spindle machining puts forward higher requirements for the rigidity and stability of the machine tool structure. SUMMARY

[0003] In view of the above problems, the utility model provides a machine tool closed frame and processing machine tool. The machine tool frame in the prior art has poor force and heat symmetry and balance characteristics, weak structural rigidity and small strength. The utility model adopts the closed frame structure which can improve the environmental adaptability and stability of the machine tool, and the closed frame structure with force and heat balance characteristics can simplify the maintenance and cleaning work of the machine tool.

[0004] The utility model provides a machine tool closed frame, the machine tool closed frame adopts closed whole frame structure, including four vertical columns, four cross beams and base, each vertical column is connected with two cross beams fixedly, four vertical columns and four cross beams are set to base integrally and symmetrically.

[0005] Optionally, the four vertical columns are arranged at the four corners of the base.

[0006] Optionally, tracks are installed on the four cross beams.

[0007] Optionally, tracks are installed on the four vertical columns.

[0008] Optionally, elastic pads and support structures are arranged at the bottom of the base.

[0009] Optionally, the base is further provided with inclined passages.

[0010] Optionally, the base is made of a heat-conductive material.

[0011] In another aspect, the utility model discloses a kind of processing machine tools, including the machine tool closed frame of preceding, rotating workstation, two machine tool spindles and two groups of five-axis motion components;Two groups of five-axis motion components are set on the machine tool closed frame.

[0012] Optionally, the two machine tool spindles are respectively connected with the two groups of five-axis motion components.

[0013] Optionally, the two machine tool spindles are respectively provided with machining tools.

[0014] Compared with the prior art, the utility model at least has the following beneficial effects:

[0015] (1) the machine tool closed frame of the utility model adopts fully-enclosed design, the minimum of clearance between machine tool components is realized by integrally forming or respectively forming and then welding column, beam and base, effectively blocks the invasion of external pollutants.This design greatly simplifies the maintenance and cleaning work of machine tool, reduces the dependence on professional maintenance personnel, thereby improves cleaning, cleaning efficiency, and significantly reduces maintenance cost.More importantly, it can also effectively isolate the influence of external environment on the inside of machine tool, such as temperature fluctuation, humidity change, etc., provide stable internal environment for high-precision machining, and further improve machining precision and product quality.

[0016] (2) the machine tool closed frame of the utility model adopts box type design, which makes the machine tool still maintain stable performance and precision when bearing heavy load or complex cutting task.Whether by integrally forming or by respectively forming and then welding column, beam and base, cutting force can be effectively dispersed and borne.Using box type design enhances the stability and durability of machine tool, and also makes the machine tool of the utility model show significant advantages in structural rigidity and strength, providing solid guarantee for high-precision and high-efficiency machining.At the same time, this structural design also considers the dynamic characteristics and vibration control of machine tool to ensure that stable machining precision can be maintained when running at high speed.

[0017] (3) the machine tool closed frame of the utility model adopts symmetrical design, which presents mirror symmetry characteristics in geometric form.This design makes the force borne by each symmetrical part of the machine tool can be balanced with each other, evenly distributed, effectively avoids stress concentration phenomenon caused by excessive force in local area, helps to prolong the service life of machine tool.At the same time, this symmetrical design also helps to realize force and heat balance of machine tool, so that the machine tool can effectively disperse cutting force and heat during machining process, maintain the stability and precision of machine tool, further improve machining quality and efficiency.

[0018] (4) The machine tool structure of the utility model can be used for various types of machine tools, and the modular design has wide applicability. Users can independently select installation according to actual needs, realize free combination of various types of machine tools, such as single-spindle or multi-spindle horizontal, single-spindle or multi-spindle vertical, double-spindle vertical-horizontal conversion, double-spindle vertical-horizontal conversion, and the like. Such flexibility not only meets the processing needs of different users, but also endows the machine tool with high expandability, so that it can easily adapt to future technical upgrading and transformation. Therefore, the machine tool structure of the utility model has wide application prospect and market potential, and can meet various high-precision and high-efficiency processing needs. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not considered as limiting the utility model.

[0020] Fig. 1 It is a front view of the machine tool frame with uniform force and heat characteristics of the utility model;

[0021] Fig. 2 It is a front view of the machine tool frame with uniform force and heat characteristics of the utility model;

[0022] Reference signs:

[0023] 1. Machine tool frame, 2. Rotary table, 3. Workpiece to be processed, 4-1. X-axis movement component, 5-1. Y-axis movement component, 6-1. Z-axis movement component, 7-1. C-axis orthogonal head, 8-1. A-axis orthogonal head, 9-1. Machine tool spindle, 10-1. Machining tool, 11. Numerical control device, 12. Column one, 13. Column two, 14. Column three, 15. Column four, 16. Cross beam one, 17. Cross beam two, 18. Cross beam three, 19. Cross beam four, 20. Base. DETAILED DESCRIPTION

[0024] In order to enable one skilled in the art to more clearly understand the above-mentioned purposes, features and advantages of the utility model, the utility model will be further described in detail below in combination with the drawings and specific embodiments. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict. In addition, the utility model can also be implemented in other ways different from those described herein, therefore, the protection scope of the utility model is not limited by the specific embodiments disclosed below.

[0025] One specific embodiment of the utility model, such as Figs. 1-2, disclose a machine tool closed frame, which adopts a closed integral frame structure, comprising a bed frame and a base 9; the bed frame is composed of column one 12, column two 13, column three 14, column four 15, cross beam one 16, cross beam two 17, cross beam three 18, cross beam four 19 and base 20; column one 12, column two 13, column three 14, column four 15, cross beam one 16, cross beam two 17, cross beam three 18 and cross beam four 19 are integrally and symmetrically arranged on the base 20, and are in an integral forming structure or an assembled structure.

[0026] Column one 12, column two 13, column three 14 and column four 15 are arranged at four corners of the base 20 respectively; the top end of each column is vertically and fixedly connected with two cross beams respectively; column one 12, column two 13, column three 14, column four 15, cross beam one 16, cross beam two 17, cross beam three 18 and cross beam four 19 are provided with guide rails and five-axis motion assemblies according to actual requirements.

[0027] Further, tracks are arranged on column one 12, column two 13 and / or column four 14 for a double-spindle machining center; tracks are arranged on cross beam one 16, cross beam two 17, cross beam three 18 and / or cross beam four 19.

[0028] Further, the base 9 comprises a heat dissipation system, a chip removal system and a damping support device, which adopt a traditional design, and pay attention to reliability and easy maintenance. The heat dissipation system realizes efficient heat dissipation through heat conduction and natural convection, the base material has good heat conduction performance, and the influence of heat accumulation on the stability of the machine tool is reduced; the chip removal system adopts an inclined channel design, relies on gravity to naturally discharge chips, and can keep the machining area clean by combining manual cleaning; the damping support device takes an elastic pad and a firm support structure as the core, can absorb running vibration and keep the base stable, and each support point is uniformly distributed to adapt to ordinary working environment. The overall design is simple and efficient, and provides a solid guarantee for the precision and stability of the machine tool.

[0029] The utility model has good force, heat symmetry and balance characteristics, strong structure rigidity and high strength, and the symmetrical design can improve the environmental adaptability and stability of the machine tool, and the closed design simplifies the maintenance and cleaning work of the machine tool; it can be used for single-spindle or multi-spindle horizontal, single-spindle or multi-spindle vertical, double-spindle vertical-horizontal conversion, double-spindle vertical-horizontal type and other types of numerical control machining centers, and has a wide application field, realizes the stability, rigidity and machining precision requirements in the high-speed machining operation of the numerical control machining center, has good force, heat symmetry and balance characteristics, improves the machining efficiency and machining precision of parts on the basis of ensuring the machining quality of parts, and can reduce the machining cost.

[0030] The utility model discloses application field is extensive, can be used for single main shaft or multiple main shaft horizontal, single main shaft or multiple main shaft vertical, double main shaft vertical horizontal conversion type, double main shaft one vertical one horizontal type and so on type numerical control machining center.

[0031] The utility model discloses another aspect, see Fig. 2 Disclose a kind of processing machine tool, including aforementioned machine frame with force heat uniformity characteristics, rotating workbench 2, two machine tool spindles and two groups of five-axis motion components;Rotating workbench 11 is equipped in the center of bed frame, workpiece 10 to be processed is installed on rotating workbench 11 by clamp;Two groups of five-axis motion components are respectively arranged on bed frame;Two machine tool spindles are respectively arranged on two groups of five-axis motion components;Processing cutter 10-1 for processing on the two sides of the workpiece to be processed is respectively mounted at the end of two machine tool spindles.

[0032] Further, bed frame 1 includes operation platform and rail mounting frame;Rail mounting frame includes first side, second side and top surface;Operation platform is arranged at the bottom between first side and second side, and first side and second side are both perpendicular to operation platform;Two groups of rails, including Z-axis guide rail and / or X-axis guide rail, are symmetrically arranged on first side, second side and top surface;Two groups of Z-axis guide rails are arranged on first side and / or second side;Z-axis guide rail is perpendicular to operation platform;Top surface is arranged at the top between first side and second side, and two groups of X-axis guide rails are symmetrically arranged on top surface;X-axis guide rail is parallel to operation platform.

[0033] Rotating workbench 2 is arranged at the center of bed frame 1, and workpiece 3 to be processed is installed on rotating workbench 2 by clamp;Two groups of five-axis motion components are both arranged on rail.

[0034] Further, five-axis motion component includes X-axis motion part, Y-axis guide rail, Y-axis motion part, Z-axis guide rail, Z-axis motion part and C-axis orthogonal swing head and A-axis orthogonal swing head;C-axis is the axis of rotation around Z-axis, and A-axis is the axis of rotation around X-axis.

[0035] Further, both ends of X-axis motion part 4-1 slide on X-axis guide rail through slider, and X-axis servo driving device is adopted to drive.

[0036] Two groups of Y-axis guide rails are arranged in the interior of X-axis motion part 4-1;Y-axis motion part 5-1 slides on Y-axis guide rail through slider, and Y-axis servo driving device is adopted to realize gravity center driving.

[0037] Y-axis motion part 5-1 is each provided with 4 Z-axis guide rails in the interior, and is in quadrilateral layout, and Z-axis motion part 6-1 slides on Z-axis guide rail through slider, and Z-axis servo driving device is adopted to realize gravity center driving.

[0038] A C-axis orthogonal swing head 7-1 is installed at the end of the Z-axis movement component 6-1, an A-axis orthogonal swing head 8-1 is installed on the C-axis orthogonal swing head 7-1, a machine tool spindle 9-1 is arranged on the A-axis orthogonal swing head 8-1, and a machining tool 10-1 for machining the workpiece to be machined is arranged at the end of the machine tool spindle 9-1.

[0039] Further, a numerical control device 11 is further included, the machine tool axial movement components are driven by servo driving amplifiers and feed servo motors, and are controlled by the numerical control device 11.

[0040] Further, the two sets of five-axis movement assemblies are arranged on the two sets of rails on the top surface of the rail mounting frame, and the two machining tools 10-1 perform symmetrical machining on both sides of the workpiece to be machined.

[0041] The double-spindle double-five-axis linkage high-speed efficient vertical machining center provided by the utility model can realize symmetrical double-spindle synchronous machining on the workpiece to be machined. Fig. 2 The workpiece to be machined 3 is fixed on the rotary workbench 2 by a clamp, the machine tool spindles 9-1 are respectively driven by the machine tool X, Y and Z axial movement components, the C-axis orthogonal swing head and the A-axis orthogonal swing head, linear motion of the machine tool spindles 9-1 in the X, Y and Z axial directions and rotary motion of the machine tool spindles 9-1 around the Z and X axes are realized, and double-five-axis linkage machining on the workpiece to be machined 3 is realized.

[0042] For the rotary workpiece with the rotary array feature, since machining can be simultaneously performed on both ends of the workpiece and the cutting forces applied on both ends of the workpiece by the machining tools are offset, machining deformation of the workpiece can be reduced, and machining quality and machining efficiency of the workpiece are improved.

[0043] The above merely describes a preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered within the protection scope of the utility model.

Claims

1. A machine tool enclosure frame, characterized by, The machine tool closed frame adopts a closed overall frame structure, comprising four columns, four beams and a base; each column is fixedly connected with two beams; the four columns and the four beams are symmetrically arranged on the base.

2. Machine tool enclosure frame according to claim 1, characterized in that The four columns are respectively arranged at four corners of the base.

3. Machine tool enclosure frame according to claim 1, characterized in that Tracks are mounted on the four beams.

4. The machine tool enclosure frame of claim 1, wherein, Tracks are mounted on the four columns.

5. The machine tool enclosure frame of claim 1, wherein, An elastic pad and a support structure are arranged at the bottom of the base.

6. The machine tool enclosure frame of claim 1, wherein, The base is further provided with an inclined channel.

7. The machine tool enclosure frame of claim 1, wherein, The base is made of a heat-conducting material.

8. A machine tool, characterized by The machine tool comprises the machine tool closed frame, a rotary table, two machine tool spindles and two sets of five-axis motion assemblies according to any one of claims 1-7; the two sets of five-axis motion assemblies are arranged on the machine tool closed frame.

9. The machine tool according to claim 8, characterized in that The two machine tool spindles are respectively connected with the two sets of five-axis motion assemblies.

10. The machine tool according to claim 9, characterized in that, The two machine tool spindles are respectively provided with machining tools.

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