Bridge type five-axis machining center

Abstract

The utility model relates to a bridge type five-axis machining center which comprises a stand column assembly. The beam assembly is slidably connected to the top end of the stand column assembly; the cross beam assembly comprises a cross beam, a Y-axis guide rail and a Y-axis linear module; the ram assembly is mounted in the cross beam assembly in a sliding manner; the ram assembly comprises a ram, a Y-axis sliding block, a Z-axis sliding block, a lateral pressing block and a Z-axis linear module. The main shaft assembly is mounted in the ram assembly in a sliding manner; the spindle assembly comprises a spindle box, a nut sleeve, a Z-axis guide rail and a motor spindle. The nut sleeve is used for being connected with the Z-axis linear module in a matched mode. The Z-axis guide rails are connected with the Z-axis sliding blocks in a one-to-one matched mode. The bridge type five-axis machining center is simple in structure and convenient to use, the Y-axis guide rail and the Z-axis guide rail which are installed in a built-in mode are adopted, the direct influence of external environment temperature changes on the Y-axis guide rail and the Z-axis guide rail is reduced, meanwhile, the deformation amount of the Y-axis guide rail and the Z-axis guide rail is effectively limited or compensated by the lateral pressing blocks, and the whole machine tool structure is more stable.

Description

Technical Field

[0001] The utility model relates to the technical field of five-axis machining centers, in particular to a bridge-type five-axis machining center. Background Art

[0002] The five-axis machining center is a high-tech, high-precision machine tool equipment specially used for machining complex curved surfaces. It adds two rotary axes on the basis of the traditional three linear axes of X, Y, and Z, so as to realize multi-angle and multi-directional machining of workpieces. The design of this machine tool structure makes the five-axis machining center have higher flexibility and precision when machining complex parts.

[0003] In the traditional five-axis machining center structure, the ram is connected to the crossbeam through the slide rail, which is a core design feature. This structure allows the ram to slide on the crossbeam, so as to make precise position adjustments to meet the processing requirements. However, metal materials have the characteristics of thermal expansion and contraction. Since the slide rail is located on the outer surface of the crossbeam, this expansion or contraction will directly cause the relative position between the slide rail and the crossbeam to change, causing the position of the ram to shift relative to the center of the machine tool spindle, seriously affecting the processing quality. Utility Model Content

[0004] Based on this, the utility model provides a bridge-type five-axis machining center with a simple structure and easy use. It adopts built-in Y-axis guide rails and Z-axis guide rails, which reduces the direct impact of external ambient temperature changes on the Y-axis guide rails and the Z-axis guide rails. At the same time, the deformation of the Y-axis guide rails and the Z-axis guide rails is effectively limited or compensated by the lateral pressure blocks, making the entire machine tool structure more stable.

[0005] In order to achieve the purpose of the utility model, the utility model adopts the following technical solutions:

[0006] A bridge-type five-axis machining center, comprising:

[0007] Column assembly;

[0008] A crossbeam assembly slidably connected to the top of the column assembly; the crossbeam assembly includes a crossbeam arranged in a hollow manner, a plurality of Y-axis guide rails installed on opposite sides of the inner wall of the crossbeam, and a Y-axis linear module installed on the inner wall of the crossbeam;

[0009] A ram assembly slidably mounted inside the crossbeam assembly; the ram assembly includes a ram slidably mounted inside the crossbeam, a plurality of Y-axis sliders detachably mounted on opposite sides of the outer wall of the ram, a plurality of Z-axis sliders detachably mounted on opposite sides of the inner wall of the ram, lateral pressure blocks respectively mounted on one side of each Y-axis slider and one side of each Z-axis slider, and a Z-axis linear module mounted on opposite sides of the inner wall of the ram; the Z-axis sliders are located on opposite sides of the Z-axis linear module; the ram is used to connect the Y-axis linear module; the Y-axis sliders are matched and connected to the Y-axis guide rails one by one; and

[0010] A spindle assembly is slidably installed inside the slide assembly; the spindle assembly includes a spindle box, a nut sleeve installed in the middle of two opposite sides of the outer wall of the spindle box, a Z-axis guide rail installed on two opposite sides of the outer wall of the spindle box, and a motor spindle installed inside the spindle box; the nut sleeve is used to match and connect the Z-axis linear module, and the Z-axis guide rail is matched and connected with the Z-axis slider one by one.

[0011] The above-mentioned bridge-type five-axis machining center has a simple structure and is easy to use. It adopts built-in Y-axis guide rails and Z-axis guide rails, which reduces the direct impact of external ambient temperature changes on the Y-axis guide rails and Z-axis guide rails. At the same time, the deformation of the Y-axis guide rails and the Z-axis guide rails is effectively limited or compensated by the lateral pressure blocks, making the entire machine tool structure more stable.

[0012] In one embodiment, the column assembly includes a base, columns vertically connected to opposite sides of the base, and X-axis linear modules respectively installed on the top of each column; the opposite ends of the beam are respectively connected to the X-axis linear modules.

[0013] In one embodiment, a first through hole is provided in the middle of the beam along the Y-axis direction, and the Y-axis guide rail is installed on the inner walls on two opposite sides of the first through hole.

[0014] In one embodiment, a second through hole is provided in the middle of the ram along the Z-axis direction, and the Z-axis slider and the Z-axis linear module are both installed on the inner walls on two opposite sides of the second through hole.

[0015] In one of the embodiments, an assembly table is provided on the slide corresponding to the installation position of each Y-axis slider and each Z-axis slider, the front of the assembly table is used for positioning and connecting the Y-axis slider, and the side of the assembly table is used for positioning and connecting the lateral pressure block.

[0016] In one of the embodiments, a plurality of assembly holes are evenly spaced on a side surface of the assembly table, and a plurality of through holes are evenly spaced on the lateral pressure block. Bolts are passed through the through holes and then screwed into the inside of the assembly holes to achieve connection and installation between the lateral pressure block and the assembly table.

[0017] In one embodiment, a gasket is installed between the assembly platform and the Y-axis slider, and between the assembly platform and the Z-axis slider. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of a bridge-type five-axis machining center according to one embodiment of the utility model;

[0019] Figure 2 for Figure 1 The exploded schematic diagram of the bridge-type five-axis machining center shown;

[0020] Figure 3 for Figure 2An exploded schematic diagram of another perspective of the bridge-type five-axis machining center shown;

[0021] Figure 4 for Figure 1 A partial cross-sectional view of a bridge-type five-axis machining center is shown;

[0022] Figure 5 for Figure 1 A three-dimensional schematic diagram of a crossbeam assembly in a bridge-type five-axis machining center is shown;

[0023] Figure 6 for Figure 5 An enlarged schematic diagram of circle A shown;

[0024] Figure 7 for Figure 5 A cross-sectional view of a crossbeam assembly in a bridge-type five-axis machining center is shown;

[0025] Figure 8 for Figure 1 The three-dimensional schematic diagram of the spindle assembly in the bridge-type five-axis machining center is shown.

[0026] Notes on the attached drawings:

[0027] 10-column assembly, 11-base, 12-column, 13-X-axis linear module;

[0028] 20-crossbeam assembly, 21-crossbeam, 210-first through hole, 22-Y-axis guide rail, 23-Y-axis linear module;

[0029] 30-sliding ram assembly, 31-sliding ram, 310-second through hole, 32-Y-axis slider, 33-Z-axis slider, 34-lateral pressure block, 340-through hole, 35-Z-axis linear module, 36-assembly table, 360-assembly hole, 37-gasket;

[0030] 40-spindle assembly, 41-spindle box, 42-nut sleeve, 43-Z-axis guide rail. DETAILED DESCRIPTION

[0031] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0034] See also Figures 1 to 8 , which is a bridge-type five-axis machining center of an embodiment of the utility model, includes a column assembly 10, a beam assembly 20 slidably connected to the top of the column assembly 10, a slide assembly 30 slidably installed inside the beam assembly 20, and a spindle assembly 40 slidably installed inside the slide assembly 30.

[0035] The column assembly 10 includes a base 11 , columns 12 vertically connected to opposite sides of the base 11 , and X-axis linear modules 13 respectively installed on the top of each column 12 ; the X-axis linear module 13 is used to carry the connecting beam assembly 20 .

[0036] The crossbeam assembly 20 includes a crossbeam 21 having a hollow configuration, a plurality of Y-axis guide rails 22 mounted on opposite sides of the inner wall of the crossbeam 21, and a Y-axis linear module 23 mounted on the inner wall of the crossbeam 21. The opposite ends of the crossbeam 21 are respectively connected to the X-axis linear module 13. A first through hole 210 is provided in the middle of the crossbeam 21 along the Y-axis direction, and the Y-axis guide rails 22 are mounted on opposite inner walls of the first through hole 210.

[0037] The slide assembly 30 includes a slide 31 slidably installed inside the beam 21, a plurality of Y-axis sliders 32 detachably installed on opposite sides of the outer wall of the slide 31, a plurality of Z-axis sliders 33 detachably installed on opposite sides of the inner wall of the slide 31, lateral pressure blocks 34 respectively installed on one side of each Y-axis slider 32 and one side of each Z-axis slider 33, and a Z-axis linear module 35 installed on opposite sides of the inner wall of the slide 31; the Z-axis sliders 33 are located on opposite sides of the Z-axis linear module 35; the slide 31 is used to connect the Y-axis linear module 23.

[0038] The Y-axis slider 32 is matched with the Y-axis guide rail 22 to realize the sliding connection between the ram 31 and the beam 21. A second through hole 310 is provided in the middle of the ram 31 along the Z-axis direction, and the Z-axis slider 33 and the Z-axis linear module 35 are installed on the inner walls of the second through hole 310 on both sides.

[0039] like Figure 5 and Figure 6As shown, an assembly platform 36 is provided on the ram 31 at the installation position corresponding to each Y-axis slider 32 and each Z-axis slider 33. The front of the assembly platform 36 is used to position and connect the Y-axis slider 32, and the side of the assembly platform 36 is used to position and connect the lateral pressure block 34, so as to ensure that the lateral pressure block 34 can effectively abut the Y-axis slider 32 and the Z-axis slider 33. Specifically, in this embodiment, a plurality of assembly holes 360 are evenly spaced on one side of the assembly platform 36. Correspondingly, a plurality of through holes 340 are evenly spaced on the lateral pressure block 34. The connection and installation of the lateral pressure block 34 and the assembly platform 36 can be realized by passing the through holes 340 with bolts and then screwing them into the inside of the assembly holes 360.

[0040] Furthermore, gaskets 37 are installed between the assembly platform 36 and the Y-axis slider 32 and between the assembly platform 36 and the Z-axis slider 33 respectively.

[0041] The spindle assembly 40 includes a spindle box 41, nut sleeves 42 installed at the middle of two opposite sides of the outer wall of the spindle box 41, Z-axis guide rails 43 installed at two opposite sides of the outer wall of the spindle box 41, and a motor spindle (not shown) installed inside the spindle box 41. The nut sleeve 42 is used to match and connect the Z-axis linear module 35, and the Z-axis guide rails 43 are matched and connected with the Z-axis slider 33 one by one.

[0042] In actual use, on the one hand, the Y-axis guide rail 22 is installed inside the crossbeam 21, and the Z-axis guide rail 43 is installed inside the ram 31, which reduces the direct impact of the external ambient temperature change on the Y-axis guide rail 22 and the Z-axis guide rail 43, and effectively reduces the thermal displacement caused by the ambient temperature change. On the other hand, the lateral force of the lateral pressure block 34 on the Y-axis slider 32 and the Z-axis slider 33 can also be controlled by adjusting the tightness of the bolts, which is used to effectively limit or compensate for the possible deformation of the Y-axis guide rail 22 and the Z-axis guide rail 43, making the entire machine tool structure more stable.

[0043] The above-mentioned bridge-type five-axis machining center has a simple structure and is easy to use. It adopts built-in Y-axis guide rails 22 and Z-axis guide rails 43, which reduces the direct impact of external ambient temperature changes on the Y-axis guide rails 22 and Z-axis guide rails 43. At the same time, the deformation of the Y-axis guide rails 22 and Z-axis guide rails 43 is effectively limited or compensated by the lateral pressure block 34, making the entire machine tool structure more stable.

[0044] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0045] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A bridge-type five-axis machining center, characterized in that: include: Column assembly; A crossbeam assembly slidably connected to the top of the column assembly; the crossbeam assembly includes a crossbeam arranged in a hollow manner, a plurality of Y-axis guide rails installed on opposite sides of the inner wall of the crossbeam, and a Y-axis linear module installed on the inner wall of the crossbeam; A ram assembly slidably mounted inside the crossbeam assembly; the ram assembly includes a ram slidably mounted inside the crossbeam, a plurality of Y-axis sliders detachably mounted on opposite sides of the outer wall of the ram, a plurality of Z-axis sliders detachably mounted on opposite sides of the inner wall of the ram, lateral pressure blocks respectively mounted on one side of each Y-axis slider and one side of each Z-axis slider, and a Z-axis linear module mounted on opposite sides of the inner wall of the ram; the Z-axis sliders are located on opposite sides of the Z-axis linear module; the ram is used to connect the Y-axis linear module; the Y-axis sliders are matched and connected to the Y-axis guide rails one by one; and A spindle assembly is slidably installed inside the slide assembly; the spindle assembly includes a spindle box, a nut sleeve installed in the middle of two opposite sides of the outer wall of the spindle box, a Z-axis guide rail installed on two opposite sides of the outer wall of the spindle box, and a motor spindle installed inside the spindle box; the nut sleeve is used to match and connect the Z-axis linear module, and the Z-axis guide rail is matched and connected with the Z-axis slider one by one.

2. The bridge-type five-axis machining center according to claim 1, characterized in that: The column assembly comprises a base, columns vertically connected to opposite sides of the base, and X-axis linear modules respectively installed on the top of each column; opposite ends of the crossbeam are respectively connected to the X-axis linear modules.

3. The bridge-type five-axis machining center according to claim 1, characterized in that: A first through hole is arranged in the middle of the crossbeam along the Y-axis direction, and the Y-axis guide rail is installed on the inner walls at two opposite sides of the first through hole.

4. The bridge-type five-axis machining center according to claim 1, characterized in that: A second through hole is arranged in the middle of the ram along the Z-axis direction, and the Z-axis slider and the Z-axis linear module are both installed on the inner walls on two opposite sides of the second through hole.

5. The bridge-type five-axis machining center according to claim 1, characterized in that: Assembly tables are respectively provided on the ram at installation positions corresponding to each Y-axis slider and each Z-axis slider. The front of the assembly table is used for positioning and connecting the Y-axis slider, and the side of the assembly table is used for positioning and connecting the lateral pressing block.

6. The bridge-type five-axis machining center according to claim 5, characterized in that: A plurality of assembly holes are evenly spaced on one side of the assembly table, and a plurality of through holes are evenly spaced on the lateral pressure block. Bolts are passed through the through holes and then screwed into the inside of the assembly holes to achieve connection and installation between the lateral pressure block and the assembly table.

7. The bridge-type five-axis machining center according to claim 1, characterized in that: Gaskets are also installed between the assembly platform and the Y-axis slider, and between the assembly platform and the Z-axis slider.

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