Eight-axis five-linkage horizontal machining center

Abstract

The invention relates to the technical field of horizontal machine tools, and discloses an eight-axis five-linkage horizontal machining center which comprises a base, a linear machining structure and a rotary workbench structure. The linear machining structure comprises two sliding machining assemblies, and the two sliding machining assemblies are installed in the installation area in a sliding mode. The rotary workbench structure comprises two workbenches, the two workbenches are arranged corresponding to the two sliding machining assemblies, and the workbenches are rotatably installed in the installation area. When a pair of mirror image parts in bilateral symmetry needs to be machined, two blanks are clamped on the two workbenches respectively, and machining programs of the sliding machining assembly are in a mirror image relation through the coordinate transformation function of the numerical control system. The two sliding machining assemblies can move synchronously in a mirroring mode, two symmetrical parts are machined at the same time according to the mirroring tool path, and it is guaranteed that the two parts have high consistency in size and form and location tolerance.

Description

Technical Field

[0001] This invention relates to the field of horizontal machine tool technology, specifically to an eight-axis five-linkage horizontal machining center. Background Technology

[0002] As the "mother machines" of modern manufacturing, CNC machine tools directly affect the precision, efficiency, and reliability of high-end equipment manufacturing. Among them, horizontal machining centers, with their horizontal spindle arrangement, ability to complete multi-face machining of workpieces in a single setup, smooth chip removal, and strong structural rigidity, occupy a core position in the mass production and high-precision machining of complex box-shaped and disc-shaped parts in the automotive, aerospace, energy equipment, and mold industries. As the manufacturing industry develops towards higher efficiency, higher flexibility, and greater complexity, the market is placing higher demands on the machining capabilities of horizontal machining centers.

[0003] Currently, mainstream horizontal machining centers, especially five-axis linkage horizontal machining centers, can achieve precision machining of complex spatial curved surfaces. However, traditional horizontal machining centers typically use a single spindle and a single worktable configuration. When machining identical or mirror-image parts, the process can only be carried out sequentially, that is, one part is completed before clamping and machining another part. This can easily lead to slight differences in size and geometric tolerances between the two mirror-image parts. Summary of the Invention

[0004] In view of this, the present invention provides an eight-axis five-linkage horizontal machining center to solve the problem that when traditional horizontal machining centers process identical or mirror-image parts, the two mirror-image parts are prone to slight differences in size and geometric tolerances.

[0005] In a first aspect, the present invention provides an eight-axis, five-linkage horizontal machining center, comprising:

[0006] A base, wherein an installation area is provided on the base; A linear machining structure, comprising two sliding machining components, which are slidably mounted within the mounting area; A rotary worktable structure includes two worktables, which are arranged corresponding to two sliding machining components, and the worktables are rotatably installed in the installation area.

[0007] Beneficial effects: When machining a pair of mirror-image parts that are symmetrical, the two blanks are clamped on two separate worktables. Through the coordinate transformation function of the CNC system, the machining program of the sliding machining components is made to be mirror-image. The two sliding machining components can move synchronously in mirror image, machining the two symmetrical parts simultaneously with mirror-image tool paths, ensuring a high degree of consistency in the dimensions and geometric tolerances of the two parts.

[0008] In one optional embodiment, the base includes: a first base frame and a second base frame, wherein the first base frame is connected to the second base frame; The first base frame has a first receiving cavity, and the second base frame has a second receiving cavity. The first receiving cavity and the second receiving cavity are connected and together form the installation area.

[0009] In one alternative embodiment, the linear machining structure is installed in the second receiving cavity, and the rotary table structure is installed in the first receiving cavity.

[0010] Beneficial effects: With the above arrangement, the linear machining structure is integrally installed in the second receiving cavity of the second base frame. The rotary table structure is integrally installed in the first receiving cavity of the first base frame. The two are spatially connected through a connected installation area, but are relatively separate in terms of structural load-bearing capacity.

[0011] When performing mirror machining on a workpiece, the Y-axis movement of the machining spindle is achieved by the sliding of the entire crossbeam, synchronously driving the two slides and the spindle head to move in the Y direction. The X-axis and Z-axis movements are driven by the slides and the spindle head, respectively, and the two spindle heads move in a mirror image in the X-axis direction through the coordinate transformation function of the CNC system.

[0012] Two workpieces are placed on two worktables, and the rotating cradle body drives the two worktables, along with the workpieces, to swing synchronously along the A-axis. The worktables control the rotation of the workpieces, and when performing mirror machining, the coordinate transformation function of the CNC system causes the two worktables to rotate mirror-like in the B-axis direction.

[0013] The linear motion axes adopt a three-tiered progressive structure of X, Y, and Z axes, which is beneficial for improving the acceleration and response speed of each axis, thereby enhancing the high-speed machining performance of the machine tool. Simultaneously, the structure has clear layering and a well-defined rigidity transmission path. The linear machining structure, which generates more heat, is located in the second receiving cavity, while the precision-sensitive rotary table structure is located in the first receiving cavity, with the two arranged relatively independently. This arrangement reduces the direct transfer of heat generated by the linear axis motion of the linear machining structure to the rotary table structure, which helps reduce thermal deformation of the machine tool and improves long-term temperature stability and accuracy during machining.

[0014] In one alternative implementation, the top end of the first base frame and the top end of the second base frame are integrally connected by a fixed beam.

[0015] Beneficial effects: The top of the first base frame and the top of the second base frame are connected as a whole by a fixed beam, ensuring the structural strength of the entire base.

[0016] In one optional implementation, both the first base frame and the second base frame are provided with observation windows.

[0017] In one alternative embodiment, the straight machining structure further includes a crossbeam mounted in the mounting area via a Y-axis rail so that the crossbeam can slide along the Y-axis.

[0018] In one optional embodiment, a first sliding through hole is provided on the crossbeam, and two sliding processing components are installed in the first sliding through hole. The sliding processing components can move linearly along the inner wall of the first sliding through hole.

[0019] In one optional implementation, the sliding processing assembly includes: A slide block is mounted in the sliding through hole via an X-axis rail so that the slide block can slide along the X-axis; the slide block is provided with a second sliding through hole. The spindle box is mounted in the second sliding through hole via a Z-axis rail so that the spindle box can slide along the Z-axis.

[0020] In one alternative embodiment, the rotary table structure includes a rotating cradle body mounted within the mounting area, the rotating cradle body being oscillating along axis A.

[0021] In one optional embodiment, two worktables are symmetrically mounted on the rotary cradle body with the vertical central axis of the rotary cradle body as the center, and the two worktables are arranged corresponding to the two spindle boxes. The worktables can rotate along the B-axis. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of an eight-axis five-linkage horizontal machining center according to an embodiment of the present invention; Figure 2 This is a side view of an eight-axis five-linkage horizontal machining center according to an embodiment of the present invention; Explanation of reference numerals in the attached figures: 1. Base; 11. First base frame; 111. First receiving cavity; 12. Second base frame; 121. Second receiving cavity; 2. Straight-line machining structure; 21. Sliding machining assembly; 211. Slide; 212. Spindle box; 22. Crossbeam; 221. First sliding through hole; 222. Second sliding through hole; 3. Rotary worktable structure; 31. Worktable; 32. Rotary cradle body; 4. Fixed beam; 5. Observation window. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] As the "mother machines" of modern manufacturing, CNC machine tools directly affect the precision, efficiency, and reliability of high-end equipment manufacturing. Among them, horizontal machining centers, with their horizontal spindle arrangement, ability to complete multi-face machining of workpieces in a single setup, smooth chip removal, and strong structural rigidity, occupy a core position in the mass production and high-precision machining of complex box-shaped and disc-shaped parts in the automotive, aerospace, energy equipment, and mold industries. As the manufacturing industry develops towards higher efficiency, higher flexibility, and greater complexity, the market is placing higher demands on the machining capabilities of horizontal machining centers.

[0026] Currently, mainstream horizontal machining centers, especially five-axis linkage horizontal machining centers, can achieve precision machining of complex spatial curved surfaces. However, traditional horizontal machining centers typically employ a single spindle and single worktable configuration. When machining identical or mirror-image parts, the process can only proceed sequentially; that is, one part is completed before the next is clamped and machined. This serial operation mode results in low equipment utilization, long production cycle times, and overall machining efficiency that struggles to meet the demands of large-scale, fast-paced production.

[0027] To solve the above technical problems, the following will be combined with... Figures 1 to 2 The following describes embodiments of the present invention.

[0028] According to an embodiment of the present invention, an eight-axis five-linkage horizontal machining center is provided, mainly comprising a base 1, a linear machining structure 2, and a rotary table structure 3. For example... Figure 1 As shown in the figure, arrow X represents the X-axis, arrow Y represents the Y-axis, arrow Z represents the Z-axis, arrow A represents the A rotation axis, and arrow B represents the B rotation axis. The rotation center of the B rotation axis is always perpendicular to the surface of the worktable.

[0029] Within the base 1, a mounting area is formed along the Z-axis, extending through the base 1 from front to back. The inner surface of this mounting area is provided with a guide rail mounting reference surface. For example... Figure 1 and Figure 2As shown, the linear machining structure 2 includes two structurally identical sliding machining components 21, which are slidably mounted side-by-side within the mounting area. The rotary table structure 3 includes two worktables 31, each corresponding to one of the aforementioned sliding machining components 21. The two worktables 31 are rotatably mounted side-by-side within the mounting area.

[0030] When machining a pair of mirror-image parts that are symmetrical, the two blanks are clamped on two worktables 31 respectively. Through the coordinate transformation function of the CNC system, the machining program of the sliding machining component 21 is mirrored. The two sliding machining components 21 can move synchronously in mirror image, and the two symmetrical parts are machined simultaneously with mirror tool paths, ensuring that the two parts have a high degree of consistency in size and geometric tolerances.

[0031] Furthermore, when machining two workpieces, the blank workpieces are clamped onto two separate worktables 31. The CNC system can control the two machining channels synchronously or asynchronously, that is, simultaneously control the two sliding machining components 21. The two sliding machining components 21 can simultaneously or sequentially perform independent five-axis linkage machining on their respective workpieces, thereby improving machining efficiency.

[0032] In one embodiment, such as Figure 1 and Figure 2 As shown, the base 1 is formed by a first base frame 11 and a second base frame 12 fixedly connected together. The first base frame 11 and the second base frame 12 are integrally cast and then machined. The top of the first base frame 11 and the top of the second base frame 12 are integrally connected by a fixing beam 4. A first receiving cavity 111 is formed inside the first base frame 11 along the Z-axis, and a second receiving cavity 121 is formed inside the second base frame 12 along the Z-axis. The first receiving cavity 111 and the second receiving cavity 121 are interconnected and together form an installation area.

[0033] like Figure 1As shown, the linear machining structure 2 also includes a crossbeam 22, which is connected to the second base frame 12 via a Y-axis rail (not shown) on the side wall of the second receiving cavity 121, allowing the entire crossbeam 22 to slide as a whole within the second receiving cavity 121 along the Y-axis direction. The main body of the crossbeam 22 has a through-hole 221 along its Z-axis direction. Both sliding machining components are installed within the first sliding hole 221. Each sliding machining component 21 includes a slide block 211, which is connected to the inner wall of the first sliding hole 221 via an X-axis rail (not shown), allowing each slide block 211 to slide independently within the first sliding hole 221 along the X-axis direction. On each slide 211, a second sliding through hole 221 is provided along the Z-axis direction. A spindle box 212 is installed in the second sliding through hole 221 via a Z-axis rail (not shown in the figure), so that the spindle box 212 can move on the slide 211 along the Z-axis direction. A machining spindle (not shown in the figure) is installed at the front end of the spindle box 212.

[0034] like Figure 1 As shown, the rotary worktable structure 3 includes a rotary cradle body 32. This rotary cradle body 32 is mounted within the first receiving cavity 111 of the first base frame 11 via bearings and a drive mechanism, and can swing about axis A. Two worktables 31 are symmetrically mounted on the rotary cradle body 32 about its vertical central axis, side-by-side on the same side of the rotary cradle body 32. Each worktable 31 is mounted on the rotary cradle body 32 via another set of bearings and a drive mechanism, and can rotate independently about axis B.

[0035] With the above arrangement, the linear machining structure 2 is integrally installed within the second receiving cavity 121 of the second base frame 12. The rotary table structure 3 is integrally installed within the first receiving cavity 111 of the first base frame 11. The two are spatially connected through a connected installation area, but are relatively separate in terms of structural load-bearing capacity.

[0036] When machining a workpiece, the Y-axis movement of the machining spindle is achieved by the sliding of the entire crossbeam 22, which synchronously drives the two slide blocks 211 and the spindle box 212 to move in the Y direction. The X-axis and Z-axis movements are driven by the slide blocks 211 and the spindle box 212 respectively. They can move independently to machine different workpieces individually, or the coordinate transformation function of the CNC system can be used to make the two spindle boxes 212 move in the X-axis direction in a mirror image.

[0037] Two workpieces are placed on two worktables 31, and the rotating cradle body 32 drives the two worktables 31 and the workpieces to swing synchronously along the A-axis. The worktables 31 control the rotation of the workpieces and can rotate independently to control the position and posture of the two worktables 31 for individual processing; when performing mirror processing, the coordinate transformation function of the CNC system makes the two worktables 31 rotate mirrorally in the B-axis direction.

[0038] The linear motion axes adopt a three-tiered progressive structure of X-axis, Y-axis, and Z-axis, which is beneficial for improving the acceleration and response speed of each axis, thereby enhancing the high-speed machining performance of the machine tool. Simultaneously, the structural layering is clear, and the rigidity transmission path is well-defined. The linear machining structure 2, which generates more heat, is arranged in the second receiving cavity 121, while the precision-sensitive rotary table structure 3 is arranged in the first receiving cavity 111, with the two arranged relatively independently. This arrangement reduces the direct transfer of heat generated by the linear axis motion of the linear machining structure 2 to the rotary table structure 3, which helps reduce thermal deformation of the machine tool and improves the temperature stability and accuracy of long-term machining.

[0039] In one embodiment, such as Figure 2 As shown, the top of the first base frame 11 and the top of the second base frame 12 are integrally connected by a fixing beam 4 to ensure the structural strength of the entire base 1.

[0040] In one embodiment, such as Figure 1 and Figure 2 As shown, in this embodiment, observation windows 5 are provided at specific positions on the first base frame 11 and the second base frame 12. The transparent observation windows 5 allow operators and maintenance personnel to directly observe the working status of key internal components, the processing procedure, and the flow of coolant without opening the machine tool's protective door, thus improving the visibility and safety of the production process.

[0041] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. An eight-axis, five-linkage horizontal machining center, characterized in that, include: A base (1) is provided with an installation area; A linear machining structure (2) includes two sliding machining components (21) which are slidably installed in the installation area. The rotary worktable structure (3) includes two worktables (31), which are arranged corresponding to the two sliding processing components (21). The worktables (31) are rotatably installed in the installation area.

2. The eight-axis five-linkage horizontal machining center according to claim 1, characterized in that, The base (1) includes: a first base frame (11) and a second base frame (12), wherein the first base frame (11) is connected to the second base frame (12); The first base frame (11) has a first receiving cavity (111), and the second base frame (12) has a second receiving cavity (121). The first receiving cavity (111) and the second receiving cavity (121) are connected, and the first receiving cavity (111) and the second receiving cavity (121) constitute the installation area.

3. The eight-axis five-linkage horizontal machining center according to claim 2, characterized in that, The linear machining structure (2) is installed in the second receiving cavity (121), and the rotary table structure (3) is installed in the first receiving cavity (111).

4. The eight-axis five-linkage horizontal machining center according to claim 2, characterized in that, The top of the first base frame (11) and the top of the second base frame (12) are integrally connected by a fixing beam (4).

5. The eight-axis five-linkage horizontal machining center according to claim 2, characterized in that, Both the first base frame (11) and the second base frame (12) are provided with observation windows (5).

6. The eight-axis five-linkage horizontal machining center according to claim 1, characterized in that, The linear machining structure (2) further includes a crossbeam (22), which is mounted in the mounting area via a Y-axis rail so that the crossbeam (22) can slide along the Y-axis.

7. The eight-axis five-linkage horizontal machining center according to claim 6, characterized in that, The crossbeam (22) has a first sliding through hole (221), and two sliding processing components (21) are installed in the first sliding through hole (221). The sliding processing components (21) can move linearly along the inner wall of the first sliding through hole (221).

8. The eight-axis five-linkage horizontal machining center according to claim 7, characterized in that, The sliding processing assembly (21) includes: A slide block (211) is mounted in the sliding through hole via an X-axis rail so that the slide block (211) can slide along the X-axis. A second sliding through hole (221) is provided on the slide block (211). The spindle box (212) is mounted in the second sliding through hole (221) via a Z-axis rail so that the spindle box (212) can slide along the Z-axis.

9. The eight-axis five-linkage horizontal machining center according to claim 8, characterized in that, The rotary worktable structure (3) includes a rotary cradle body (32), which is installed in the installation area and can swing along the A-axis.

10. The eight-axis five-linkage horizontal machining center according to claim 9, characterized in that, Two worktables (31) are symmetrically mounted on the rotary cradle body (32) with the vertical central axis of the rotary cradle body (32) as the center. The two worktables (31) are set corresponding to the two spindle boxes (212). The worktables (31) can rotate along the B axis.

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