Machine tool portal frame

Abstract

The utility model relates to a machine tool portal frame which is applied to a machining assembly provided with a spindle box and comprises a beam assembly, the beam assembly comprises a first beam and a second beam, the first beam is arranged below the second beam, the upper plane of the first beam is in sliding connection with the lower plane of the machining assembly, and the lower plane of the second beam is in sliding connection with the lower plane of the machining assembly. By optimizing the structure of the whole machine, the stability during high-speed processing is ensured, the performance of the whole machine is improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to a machine tool gantry and belongs to the technical field of machine tool mechanical design. Background Art

[0002] As a high-precision multi-axis machining machine, the machine tool gantry is usually equipped with a tool magazine and tool changing device, and is suitable for the machining of complex parts. For example, the machining of automobile wheels has very strict requirements on dimensional accuracy, shape accuracy and surface roughness, and the wheel hub material is difficult to process, the shape is irregular and uneven, and multiple steps of processing are required, which places high demands on the overall performance of the machining machine. How to improve the production efficiency and quality of automobile wheels to meet the needs of automobile matching has become the research and development focus of the machine tool gantry.

[0003] There are three main structures of machine tool gantry used for wheel hub processing. The first is a single-head C-type structure machining center. The single-head machining center is a general-purpose machining center with a large footprint and can only process one product at a time, resulting in high processing costs for a single wheel hub. The second is a double-head C-type structure machining center. The double-head machining center is based on the first type, with a larger spindle box and two spindle boxes on the same side installed to achieve simultaneous processing of two products. The machine tool occupies a large area, the load of the spindle box increases, and it is easy to cause the C-type structure machine tool to deform downward. The third is a machining center with two spindle boxes installed back to back. The two spindle boxes are placed on both sides of the beam. It occupies a small area, but the beam structure is too thin, and the center of gravity of the whole machine is high, which is easy to produce large vibrations during the processing. The traditional wheel hub machining center basically relies on a set of spindle box components for processing, and completes a wheel hub separately each time. For mass production, the process is long, and it is difficult to achieve multi-station standard production. The equipment is heavy and expensive, which increases the production cost of the enterprise. Utility Model Content

[0004] The utility model provides a machine tool gantry, aiming to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a machine tool gantry, which is conducive to ensuring stability during high-speed processing, improving the performance of the whole machine, and reducing the production cost by optimizing the whole machine structure.

[0005] The technical solution of the utility model relates to a machine tool gantry on one hand, which is applied to a processing assembly provided with a spindle box, and the machine tool gantry includes:

[0006] A beam assembly, the beam assembly includes a first beam and a second beam, the first beam is arranged below the second beam; the upper plane of the first beam is slidably connected to the lower plane of the processing assembly; the lower plane of the second beam is slidably connected to the lower plane of the processing assembly.

[0007] Furthermore, it includes two columns, the upper sides of the two columns are respectively connected to the lower sides of the two ends of the first beam, and the lower sides of the two columns are respectively connected to the upper sides of the two ends of the second beam; wherein the width of the columns decreases from bottom to top.

[0008] Furthermore, the column is provided with a weight-reducing recess.

[0009] Furthermore, a connecting groove with an upward opening is provided at the upper end of the processing component, the second crossbeam is partially embedded in the connecting groove, and the lower plane of the second crossbeam is slidably connected to the bottom wall of the connecting groove.

[0010] Furthermore, the crossbeam assembly includes a first guide rail and a second guide rail, wherein the first guide rail is arranged on an upper plane of the first crossbeam, and the second guide rail is arranged on a lower plane of the second crossbeam.

[0011] Furthermore, the number of the first guide rails is two, and the two first guide rails are symmetrically arranged on the first crossbeam.

[0012] Furthermore, the processing assembly also includes a slide, the lower end of which is provided with a first sliding block cooperating with the first guide rail, the upper end of which is provided with a connecting groove, and the bottom wall of the connecting groove is provided with a second sliding block cooperating with the second guide rail.

[0013] Furthermore, the processing assembly also includes a spindle box, the spindle box is provided with a connecting hole, the slide is passed through the connecting hole, and the spindle box is arranged on the side of the spindle box.

[0014] Furthermore, a machining lifting drive for lifting the spindle box is provided on one side of the upper end of the slide, and the machining lifting drive is connected to the spindle box through the spindle box.

[0015] Furthermore, a side wall of the connecting groove facing away from the processing lifting drive is spaced apart from the second crossbeam.

[0016] The beneficial effects of the utility model are as follows.

[0017] The machine tool gantry of the utility model is conducive to ensuring stability during high-speed processing, improving the performance of the whole machine, and reducing the production cost by optimizing the whole machine structure. A first crossbeam, a second crossbeam and two columns are provided, and a slide plate for installing a processing spindle is provided, the slide plate is provided between the first crossbeam and the second crossbeam, the lower ends of the two first columns are respectively connected to the two ends of the first crossbeam, the upper ends of the two first columns are respectively connected to the two ends of the second crossbeam, the width of the column decreases from bottom to bottom, the width of the first crossbeam is greater than the width of the second crossbeam, so that the gantry structure composed of the first crossbeam, the second crossbeam and the two columns presents a triangular structure that is narrow at the top and wide at the bottom, more than two processing spindles are respectively provided on both sides of the second crossbeam and share a crossbeam for synchronous processing, so that the center of gravity of the whole machine is lowered, and at the same time, the rigidity and precision stability of the machine tool during the processing are improved, which is conducive to solving the problem of the crossbeam structure being too thin, and is conducive to realizing high-speed and efficient synchronous processing of more than two spindles. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a first structural schematic diagram of a machine tool gantry according to an embodiment of the utility model.

[0019] Figure 2 It is a structural schematic diagram of a machine tool gantry according to an embodiment of the utility model applied to a machine tool.

[0020] Figure 3 It is a structural schematic diagram of a column according to an embodiment of the utility model.

[0021] Figure 4 It is a second structural schematic diagram of a machine tool gantry according to an embodiment of the utility model.

[0022] Figure 5 It is a structural schematic diagram of a slide according to an embodiment of the utility model.

[0023] Reference numerals:

[0024] 100 machining component; 110 slide; 111 connecting groove; 112 machining lifting drive; 113 lifting guide rail; 120 machining spindle; 130 spindle box;

[0025] 200 beam assembly; 210 first beam; 211 first guide rail; 212 first slider; 220 second beam; 221 second guide rail; 222 second slider;

[0026] 300 columns; 310 weight-reducing recesses;

[0027] 400 bed; 410 workbench; 420 workpiece. DETAILED DESCRIPTION

[0028] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the utility model, so as to fully understand the purpose, scheme and effect of the utility model. It should be noted that the embodiments and features in the embodiments of this application can be combined with each other without conflict.

[0029] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or it can be indirectly fixed or connected to the other feature. In addition, the descriptions of up, down, left, right, top, bottom, etc. used in the present invention are only relative to the relative positional relationship of the various components of the present invention in the accompanying drawings.

[0030] In addition, unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art. The terms used in this specification are only for describing specific embodiments, not for limiting the present invention. The term "and / or" used herein includes any combination of one or more related listed items.

[0031] It should be understood that, although the terms first, second, third, etc. may be used to describe various elements in the present disclosure, these elements should not be limited to these terms. These terms are only used to distinguish elements of the same type from each other. For example, without departing from the scope of the present disclosure, the first element may also be referred to as the second element, and similarly, the second element may also be referred to as the first element.

[0032] See also Figures 1 to 5 The machine tool gantry of the technical solution of the utility model is applied to a processing assembly 100 provided with a spindle box 130, including a beam assembly 200, the beam assembly 200 includes a first beam 210 and a second beam 220, the first beam 210 is arranged below the second beam 220, the upper plane of the first beam 210 is slidably connected to the lower plane of the processing assembly 100, and the lower plane of the second beam 220 is slidably connected to the lower plane of the processing assembly 100.

[0033] For details, see Figure 1 and Figure 2, the second beam 220 is arranged on the bed 400 and above the workbench 410, the workbench is movably arranged on the bed 400, the workpiece 420 is arranged on the workbench 410, the slide 110 of the processing assembly 100 is arranged on the second beam 220, and two or more processing spindles 120 are respectively arranged at both ends of the slide 110, and the processing spindles 120 are driven to move left and right on the second beam 220 by the slide 110, and the slide 110 is fixed between the first beam 210 and the second beam 220, and the processing spindles 120 move up and down along the slide 110, so as to process the workpiece 420. It can be understood that in some specific embodiments, the processing spindles 120 of the embodiment of the utility model can be set to an even number, for example, the number of processing spindles 120 is two, four or six, and the same number of processing spindles 120 are arranged on both sides of the slide 110. It should be noted that the processing spindles 120 of the embodiment of the utility model can also be set to one or more than two.

[0034] In the machine tool gantry of the embodiment of the utility model, more than two processing spindles 120 share a second cross beam 220 through the slide 110, the lower plane of the slide 110 is connected to the upper plane of the first cross beam 210 for supporting and guiding, the lower plane of the slide 110 is connected to the lower plane of the second cross beam 220 for guiding and strengthening stability, and the column 300 adopts a structure with a wide bottom and a narrow top (see Figure 3 ), thereby optimizing the overall layout of the machine, compared with the traditional structure in which the upper plane of the first crossbeam 210 and the second crossbeam 220 are connected to the upper and lower lower planes of the slide 110 and the columns 300 adopt an equal-width structure, it is beneficial to lower the center of gravity of the machine tool, improve the dynamic stability of the machine tool, and solve the problem of large vibration during processing of multiple processing spindles 120.

[0035] The machine tool gantry of the utility model embodiment is provided with a first crossbeam 210, a second crossbeam 220 and two columns 300, and a slide 110 for installing a processing spindle 120. The slide 110 is arranged between the first crossbeam 210 and the second crossbeam 220. The lower ends of the two first columns 300 are respectively connected to the two ends of the first crossbeam 210, and the upper ends of the two first columns 300 are respectively connected to the two ends of the second crossbeam 220. The width of the columns 300 decreases from bottom to bottom, and the width of the first crossbeam 210 is greater than the width of the second crossbeam 220, so that the gantry structure composed of the first crossbeam 210, the second crossbeam 220 and the two columns 300 presents a triangular structure that is narrow at the top and wide at the bottom, so that the center of gravity of the whole machine is lowered, the rigidity and precision stability of the machine tool during the processing process are improved, and it is helpful to solve the problem of the crossbeam structure being too thin. Furthermore, the column 300 is provided with a weight-reducing recess 310, see Figure 4 The front and rear sides of the column 300 are both provided with weight-reducing recesses 310 .

[0036] In some specific embodiments of the present invention, see Figure 2 and Figure 5 The upper end of the slide 110 of the utility model embodiment is provided with a connection groove 111 with an opening facing upward, the second crossbeam 220 is embedded in the connection groove 111 and is slidably connected to the bottom wall of the connection groove 111, and the upper plane of the second crossbeam 220 is slidably connected to the lower plane of the slide 110. Further, a processing lifting driver 112 for lifting the processing spindle 120 is provided on one side of the upper end of the slide 110, and the processing lifting driver 112 is arranged on one side of the opening of the connection groove 111. Further, one side wall of the connection groove 111 is in contact with one side wall of the second crossbeam 220 close to the processing lifting driver 112, and the other side wall of the connection groove 111 is spaced from the other side wall of the second crossbeam 220 away from the processing lifting driver 112. Further, the side wall of the connection groove 111 away from the processing lifting driver 112 is inclined outward from bottom to top.

[0037] In some specific embodiments of the present invention, see Figure 4 The crossbeam assembly 200 of the embodiment of the utility model includes a first guide rail 211 and a second guide rail 221. The first guide rail 211 is arranged on the upper plane of the first crossbeam 210, and the second guide rail 221 is arranged on the lower plane of the second crossbeam 220. Further, a first slider 212 is arranged on the lower plane of the slide 110, and the first crossbeam 210 is slidably connected to the slide 110 through the cooperation of the first guide rail 211 and the first slider 212, and a second slider 222 is arranged on the upper plane of the slide 110, and the second crossbeam 220 is slidably connected to the slide 110 through the cooperation of the second guide rail 221 and the second slider 222.

[0038] In some specific embodiments of the present invention, the number of the first guide rails 211 in the embodiments of the present invention is two, and the two first guide rails 211 are symmetrically arranged on the first crossbeam 210. Figure 3 and Figure 4 The column 300 adopts a structure that is narrow at the top and wide at the bottom. The width of the first crossbeam 210 matches the width of the lower end of the column 300, and the width of the second crossbeam 220 matches the width of the upper end of the column 300. The width of the first crossbeam 210 is greater than the width of the second crossbeam 220. The second crossbeam 220 is provided with a second guide rail 221, and the first crossbeam 210 is provided with two first guide rails 211, which are respectively provided at the front and rear sides of the first crossbeam 210. A translation screw is provided between the two first guide rails 211, and the translation screw is connected to the slide 110 and the processing translation driver, so that the slide 110 and the processing spindle 120 are driven to move left and right along the first crossbeam 210 under the cooperation of the processing translation driver and the translation screw.

[0039] In some specific embodiments of the present invention, the processing assembly 100 of the present invention embodiment includes a spindle box 130, a slide 110 and a processing spindle 120. A connecting hole is provided in the middle of the spindle box 130, and the slide 110 is inserted into the connecting hole so that the spindle box 130 is sleeved on the slide 110, and the processing spindle 120 is arranged on both sides of the spindle box 130. Further, a processing lifting driver 112 is provided at the upper end of the slide 110, and the processing lifting driver 112 is connected to the processing spindle 120 to drive the spindle to move up and down. Here, the processing assembly 100 is provided with two spindles for illustration, the spindle box 130 is provided with two mounting holes, and the two mounting holes are respectively arranged on the front and rear sides of the spindle box 130, and the two spindles are respectively arranged in the two mounting holes. The spindle box 130 cooperates with the lifting slider and the lifting guide rail 113, and the spindle box 130 is connected to the processing lifting driver 112, so that the spindle can be arranged on the slide 110 to move up and down. See also Figure 2 , there are two lifting slide blocks and lifting guide rails 113, both of which are arranged on the spindle box 130 and respectively arranged at the rear sides of the two mounting holes, and the two lifting guide rails 113 are respectively arranged at the front side and the rear side of the slide 110, and the upper side and the lower side of the slide 110 are respectively connected to the second crossbeam 220 and the first crossbeam 210. The processing assembly 100 of the embodiment of the utility model sets two spindles on both sides of the slide 110, and the upper plane of the slide 110 is connected to the lower plane of the second crossbeam 220, and the lower plane of the slide 110 is connected to the upper plane of the first crossbeam 210, so that while realizing the simultaneous processing of two workpieces 420, by optimizing the crossbeam structure, it is beneficial to reduce the center of gravity of the equipment, provide machine tool rigidity and processing stability, and reduce the equipment footprint.

[0040] The above is only a preferred embodiment of the utility model. The utility model is not limited to the above implementation. As long as the technical effect of the utility model is achieved by the same means, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the scope of protection of the present disclosure. All should belong to the protection scope of the utility model. Within the protection scope of the utility model, its technical solution and / or implementation method can have various modifications and changes.

Claims

1. A machine tool gantry, applied to a processing assembly (100) provided with a spindle box (130), characterized in that: The machine tool gantry comprises: A crossbeam assembly (200), the crossbeam assembly (200) comprising a first crossbeam (210) and a second crossbeam (220), the first crossbeam (210) being arranged below the second crossbeam (220); the upper plane of the first crossbeam (210) being slidably connected to the lower plane of the processing assembly (100); and the lower plane of the second crossbeam (220) being slidably connected to the lower plane of the processing assembly (100).

2. The machine tool gantry according to claim 1, characterized in that: It also includes two columns (300), the upper sides of the two columns (300) are respectively connected to the lower sides of the two ends of the first beam (210), and the lower sides of the two columns (300) are respectively connected to the upper sides of the two ends of the second beam (220); wherein the width of the columns (300) decreases from bottom to top.

3. The machine tool gantry according to claim 2, characterized in that: The column (300) is provided with a weight-reducing recess (310).

4. The machine tool gantry according to claim 1, characterized in that: The upper end of the processing assembly (100) is provided with a connecting groove (111) with an opening facing upward, the second crossbeam (220) is partially embedded in the connecting groove (111), and the lower plane of the second crossbeam (220) is slidably connected to the bottom wall of the connecting groove (111).

5. The machine tool gantry according to claim 1, characterized in that: The crossbeam assembly (200) comprises a first guide rail (211) and a second guide rail (221), wherein the first guide rail (211) is arranged on an upper plane of the first crossbeam (210), and the second guide rail (221) is arranged on a lower plane of the second crossbeam (220).

6. The machine tool gantry according to claim 5, characterized in that: The number of the first guide rails (211) is two, and the two first guide rails (211) are symmetrically arranged on the first crossbeam (210).

7. The machine tool gantry according to claim 5, characterized in that: The processing assembly (100) further comprises a slide plate (110), the lower end of which is provided with a first sliding block (212) cooperating with the first guide rail (211), the upper end of which is provided with a connecting groove (111), and the bottom wall of which is provided with a second sliding block (222) cooperating with the second guide rail (221).

8. The machine tool gantry according to claim 7, characterized in that: The processing assembly (100) further comprises a spindle box (130), the spindle box (130) being provided with a connection hole, the slide plate (110) being passed through the connection hole, and the spindle box (130) being arranged on a side of the spindle box (130).

9. The machine tool gantry according to claim 8, characterized in that: A machining lifting driver (112) for lifting the spindle box (130) is provided on one side of the upper end of the slide (110), and the machining lifting driver is connected to the spindle box (130) through the spindle box (130).

10. The machine tool gantry according to claim 9, characterized in that: The side wall of the connecting groove (111) facing away from the processing lifting drive (112) is spaced apart from the second crossbeam (220).

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