Double-sided five-axis vertical machining center

Abstract

The utility model relates to a double-sided five-axis vertical machining center, and belongs to the technical field of numerical control machine tool manufacturing. According to the structure, two symmetrical lathe bodies are arranged on the front end face and the rear end face of a base respectively, the lathe bodies located on the same plane form an arch structure, a lathe body Y-axis guide rail is arranged on the top of each lathe body, and the lathe body Y-axis guide rails corresponding to the front position and the rear position are jointly connected with a cross beam in a sliding mode through sliding blocks; a sliding saddle moving in the X direction is arranged on each cross beam, a spindle box is installed on each sliding saddle, and a five-axis head is installed at the lower end of each spindle box. Three independent spaces are arranged in the space formed by the four lathe beds, a cradle rotary table for positioning a machined part is arranged in the middle space, and tool changing mechanisms moving along the Y axis are arranged in the spaces on the two sides respectively. The double-sided five-axis vertical machining center can realize simultaneous machining of double five-axis heads, and compared with a traditional vertical five-axis machining center, the double-sided five-axis vertical machining center has the advantage that the working efficiency is multiplied.

Description

Technical Field

[0001] The utility model relates to a double-sided five-axis vertical machining center, belonging to the technical field of numerical control machine tool manufacturing. Background Art

[0002] The traditional five-axis vertical machining center with a rotating spindle has a rotating head at the front end of the spindle that can rotate 360° around the Z axis. The rotating head can also rotate around the X axis to complete a rotation of more than ±90°. Since the spindle can rotate along the A / C axis, the worktable can be designed to be very large, which is more suitable for processing large-sized and complex-shaped parts. This type of vertical five-axis machining center with a rotating spindle has the characteristics of strong adaptability and good flexibility. It can perform high-precision, stable and reliable processing on workpieces of different shapes or sizes. However, when processing relatively complex large parts such as large integrated die-cast body structural parts, its processing efficiency still needs to be improved. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a double-sided five-axis vertical machining center, which can realize simultaneous machining of two five-axis heads, and the working efficiency is doubled compared with the traditional vertical five-axis machining center.

[0004] In order to solve the above problems, the specific technical scheme of the utility model is as follows: a double-sided five-axis vertical machining center, two symmetrical bed frames are respectively provided on the front and rear end surfaces of the base, the bed frames located in the same plane form an arch structure, a bed Y-axis guide rail is provided on the top of each bed frame, and the bed Y-axis guide rails corresponding to the front and rear positions are connected to the crossbeam by sliding blocks; a saddle moving in the X direction is provided on each crossbeam, a spindle box is installed on the saddle, and a five-axis head is installed at the lower end of the spindle box; three independent spaces are provided in the space formed by the four bed frames, a cradle turntable for positioning the workpiece is provided in the middle space, and tool changing mechanisms moving along the Y-axis are provided in the spaces on both sides.

[0005] A bed Y-axis feeding device is provided on the top of each bed, and the bed Y-axis feeding device is connected to the crossbeam through a motor and a transmission screw structure; a bed Y-axis grating ruler is provided on the outer surface of each bed, and the bed Y-axis grating ruler measures the Y-axis moving distance of the crossbeam at the corresponding position.

[0006] A beam X-axis feeding device is provided on the inner surface of each beam, and the beam X-axis feeding device is connected to the slide saddle through a motor and a transmission screw structure; a beam X-axis grating ruler is provided on the upper surface of each beam, and the beam X-axis grating ruler measures the X-axis moving distance of the slide saddle at the corresponding position.

[0007] A saddle Z-axis feed device is provided on each saddle, and the Z-axis feed device is connected to the spindle box through a motor and a transmission screw structure; a saddle Z-axis grating ruler is provided on the side end face of each saddle, and the saddle Z-axis grating ruler measures the Z-axis moving distance of the spindle box at the corresponding position.

[0008] A spindle box balancing device is arranged on the slide saddle. The spindle box balancing device is a telescopic oil cylinder. The upper end of the telescopic oil cylinder is connected to the top balance bar bracket, and the lower end is connected to the spindle box.

[0009] The tool changing mechanism structure is as follows: a tool changing mechanism guide rail is provided on the tool changing mechanism base, and the tool changing slide plate is slidably matched with the tool changing mechanism guide rail; a tool changing mechanism rack parallel to the tool changing mechanism guide rail is provided on the tool changing mechanism base, a translation motor is provided on the tool changing slide plate, and the gear connected to the translation motor output shaft is meshed with the tool changing mechanism rack; a rotating large gear is connected to the tool changing slide plate through a bearing, a rotating motor is provided on the tool changing slide plate, and the gear connected to the rotating motor output shaft is meshed with the rotating large gear; a tool changing mechanism support is provided above the rotating large gear, and a knife claw group is slidably connected to the tool changing mechanism support.

[0010] A vertical tool changing guide rail is arranged on the tool changing mechanism support, and the knife claw group is slidably connected with the tool changing guide rail through a slide block; a telescopic oil cylinder is arranged on the tool changing mechanism support, and the piston rod of the telescopic oil cylinder is vertically connected with the knife claw group upward.

[0011] The double-sided five-axis vertical machining center of the present application adopts the above structure and has the following advantages:

[0012] 1. Two window sashes on the same plane form an arch structure, which is convenient for workpiece entry, exit and positioning;

[0013] 2. The five-axis head position is driven by the crossbeam and saddle on both sides of the machining center, so that the workpiece can be processed symmetrically at the same time, which not only improves the work efficiency, but also processes both sides at the same time, so that the force on both sides of the workpiece is evenly distributed, thereby improving the machining accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional view of the double-sided five-axis vertical machining center.

[0015] Figure 2 It is a top view of the double-sided five-axis vertical machining center.

[0016] Figure 3 This is a three-dimensional diagram of the beam.

[0017] Figure 4 This is the structural diagram of the spindle box Z-axis feed device.

[0018] Figure 5 This is the main shaft box structure diagram.

[0019] Figure 6It is a schematic diagram of the tool changing mechanism support connection structure. DETAILED DESCRIPTION

[0020] like Figure 1 and Figure 2 As shown, a double-sided five-axis vertical machining center is provided with two symmetrical bed frames 1 on the front and rear end surfaces of a base 5, respectively, with a total of four bed frames 1. The bed frames 1 located on the same plane form an arch structure. In order to ensure the vertical accuracy of the base 5 and the bed frames 1, an integrally processed structure is usually adopted; a bed frame Y-axis guide rail 101 is provided on the top of each bed frame 1, and the bed frame Y-axis guide rails 101 corresponding to the front and rear positions are slidably connected to the crossbeam 2 through sliders; a bed frame Y-axis feeding device 103 is provided on the top of each bed frame 1, and the bed frame Y-axis feeding device 103 is connected to the crossbeam 2 through a motor and a transmission screw structure; a bed frame Y-axis grating ruler 104 is provided on the outer surface of each bed frame 1, and the bed frame Y-axis grating ruler 104 measures the Y-axis moving distance of the crossbeam 2 at the corresponding position.

[0021] like Figure 3 As shown, a saddle 3 movable in the X direction is provided on each beam 2, and a beam X-axis feeding device 203 is provided on the inner surface of each beam 2, and the beam X-axis feeding device 203 is connected to the saddle 3 through a motor and a transmission screw structure; a beam X-axis grating ruler 204 is provided on the upper surface of each beam 2, and the beam X-axis grating ruler 204 measures the X-axis moving distance of the saddle 3 at the corresponding position.

[0022] like Figure 4 and Figure 5 As shown, a spindle box 305 is installed on the saddle 3, and a five-axis head 105 is installed at the lower end of the spindle box 305; a saddle Z-axis feeding device 303 is provided on each saddle 3, and the Z-axis feeding device 303 is connected to the spindle box 305 through a motor and a transmission screw structure; a saddle Z-axis grating ruler 304 is provided on the side end face of each saddle 3, and the saddle Z-axis grating ruler 304 measures the Z-axis moving distance of the spindle box 305 at the corresponding position.

[0023] A spindle box balancing device 306 is provided on the slide saddle 3. The spindle box balancing device 306 is a telescopic oil cylinder. The upper end of the telescopic oil cylinder is connected to the top balance bar bracket 307, and the lower end is connected to the spindle box 305, so as to reduce the load of the spindle motor.

[0024] like Figure 1 and Figure 2 As shown, three independent spaces are provided in the space formed by the four bed bodies 1, a cradle turntable 6 for positioning the workpiece is provided in the middle space, and tool changing mechanisms 4 that move along the Y axis are provided in the spaces on both sides.

[0025] like Figure 6As shown, the structure of the tool changing mechanism 4 is as follows: a tool changing mechanism guide rail 402 is provided on the tool changing mechanism base 401, and a tool changing slide plate 410 is slidably matched with the tool changing mechanism guide rail 402; a tool changing mechanism rack 404 parallel to the tool changing mechanism guide rail 402 is provided on the tool changing mechanism base 401, a translation motor 406 is provided on the tool changing slide plate 410, and a gear connected to the output shaft of the translation motor 406 is meshed with the tool changing mechanism rack 404; a rotating large gear 407 is connected to the tool changing slide plate 410 through a bearing, a rotating motor 409 is provided on the tool changing slide plate 410, and a gear connected to the output shaft of the rotating motor 409 is meshed with the rotating large gear 407; a tool changing mechanism support 415 is provided above the rotating large gear 407, and a knife claw group 414 is slidably connected to the tool changing mechanism support 415. A vertical tool changing guide rail 412 is provided on the tool changing mechanism support 415, and the knife claw group 414 is slidably connected to the tool changing guide rail 412 through a slider; a telescopic oil cylinder 411 is provided on the tool changing mechanism support 415, and the piston rod of the telescopic oil cylinder 411 is vertically connected to the knife claw group 414 upward.

Claims

1. A double-sided five-axis vertical machining center, characterized in that: Two symmetrical bed frames (1) are respectively provided on the front and rear end surfaces of the base (5); the bed frames (1) located on the same plane form an arch structure; a bed frame Y-axis guide rail (101) is provided on the top of each bed frame (1); the bed frame Y-axis guide rails (101) corresponding to the front and rear positions are slidably connected to the crossbeam (2) via a slider; a saddle (3) movable in the X direction is provided on each crossbeam (2); a spindle box (305) is installed on the saddle (3); and a five-axis head (105) is installed at the lower end of the spindle box (305); three independent spaces are provided in the space formed by the four bed frames (1); a cradle turntable (6) for positioning a workpiece is provided in the middle space; and tool changing mechanisms (4) movable along the Y axis are provided in the spaces on both sides.

2. The double-sided five-axis vertical machining center according to claim 1, characterized in that: A bed Y-axis feeding device (103) is provided on the top of each bed (1), and the bed Y-axis feeding device (103) is connected to the crossbeam (2) via a motor and a transmission screw structure; a bed Y-axis grating ruler (104) is provided on the outer surface of each bed (1), and the bed Y-axis grating ruler (104) measures the Y-axis moving distance of the crossbeam (2) at the corresponding position.

3. The double-sided five-axis vertical machining center according to claim 1, characterized in that: A beam X-axis feeding device (203) is provided on the inner surface of each beam (2), and the beam X-axis feeding device (203) is connected to the slide saddle (3) via a motor and a transmission screw structure; a beam X-axis grating ruler (204) is provided on the upper surface of each beam (2), and the beam X-axis grating ruler (204) measures the X-axis moving distance of the slide saddle (3) at the corresponding position.

4. The double-sided five-axis vertical machining center according to claim 1, characterized in that: A saddle Z-axis feeding device (303) is provided on each saddle (3), and the Z-axis feeding device (303) is connected to the spindle box (305) via a motor and a transmission screw structure; a saddle Z-axis grating ruler (304) is provided on the side end surface of each saddle (3), and the saddle Z-axis grating ruler (304) measures the Z-axis moving distance of the spindle box (305) at the corresponding position.

5. The double-sided five-axis vertical machining center according to claim 4, characterized in that: A spindle box balancing device (306) is provided on the slide saddle (3). The spindle box balancing device (306) is a telescopic oil cylinder. The upper end of the telescopic oil cylinder is connected to the top balance bar bracket (307), and the lower end is connected to the spindle box (305).

6. The double-sided five-axis vertical machining center according to claim 1, characterized in that: The tool changing mechanism (4) has the following structure: a tool changing mechanism guide rail (402) is provided on the tool changing mechanism base (401), and a tool changing slide plate (410) is slidably matched with the tool changing mechanism guide rail (402); a tool changing mechanism rack (404) parallel to the tool changing mechanism guide rail (402) is provided on the tool changing mechanism base (401), a translation motor (406) is provided on the tool changing slide plate (410), and a gear connected to the output shaft of the translation motor (406) meshes with the tool changing mechanism rack (404); a rotating large gear (407) is connected to the tool changing slide plate (410) via a bearing, a rotating motor (409) is provided on the tool changing slide plate (410), and a gear connected to the output shaft of the rotating motor (409) meshes with the rotating large gear (407); a tool changing mechanism support (415) is provided above the rotating large gear (407), and a knife claw group (414) is slidably connected to the tool changing mechanism support (415).

7. The double-sided five-axis vertical machining center according to claim 6, characterized in that: A vertical tool changing guide rail (412) is provided on the tool changing mechanism support (415), and a knife claw group (414) is slidably connected to the tool changing guide rail (412) via a slider; a telescopic oil cylinder (411) is provided on the tool changing mechanism support (415), and a piston rod of the telescopic oil cylinder (411) is vertically connected to the knife claw group (414) upward.

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