Numerical control machine tool

Abstract

The utility model provides a numerical control machine tool, and belongs to the technical field of machinery. The problem that an existing numerical control machine tool is not high enough in machining precision of long-axis workpieces is solved. The numerical control machine tool comprises a machine tool body, two parallel sliding rails are arranged on the machine tool body, a first clamping main shaft is fixedly connected to the machine tool body, a first dragging plate and a second dragging plate which are located on the two sides of the first clamping main shaft are arranged on the sliding rails, and the machine tool body is provided with a first driving structure for driving the first dragging plate to move along the sliding rails and further provided with a second driving structure for driving the second dragging plate to move along the sliding rails. A second clamping main shaft located between the first clamping main shaft and the second dragging plate is arranged on the lathe bed. The utility model is suitable for processing long shaft workpieces and has high processing precision.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to a machine tool, in particular to a numerically controlled machine tool. Background Art

[0002] CNC machine tools are used to process various workpieces. In order to improve the processing efficiency of shaft workpieces, people have designed various CNC machine tools.

[0003] The applicant also designed a fully automatic bidirectional machining structure and applied for a patent [application number: 202122717933.0; authorization announcement number: CN215967682U], which includes a clamping spindle, guide rails are installed on both sides of the clamping spindle, and two slides are installed on the upper end of the guide rails. The upper ends of the two slides are respectively installed with a blanking slide and a fifth cylinder, and a placing block is provided at the upper end of the clamping spindle, a second cylinder is installed on one side of the placing block, and a discharge block is installed on the other side of the placing block. The third cylinder is installed on the upper end of the discharge block, and a fourth cylinder is installed on one side of the discharge block. The first cylinder is installed at the rear end of the placing block, and the upper end of the slide is located behind the blanking slide and the fifth cylinder and is installed with a tool holder.

[0004] The above-mentioned fully automatic bidirectional machining structure can process both ends of shaft workpieces simultaneously, with high machining efficiency. However, the shaft workpieces are rotated by the clamping spindle, and due to their long length, they will cause shaking at both ends, affecting the machining accuracy. Summary of the invention

[0005] The purpose of the utility model is to provide a CNC machine tool suitable for long-axis workpieces and capable of ensuring machining accuracy in view of the above-mentioned problems existing in the prior art.

[0006] The purpose of the utility model can be achieved through the following technical solutions: a CNC machine tool, including a bed, the bed is provided with two parallel slide rails, the bed is fixedly connected with a clamping spindle 1, the slide rails are provided with a carriage 1 and a carriage 2 located on both sides of the clamping spindle 1, the bed is provided with a driving structure 1 for driving the carriage 1 to move along the slide rails, the bed is also provided with a driving structure 2 for driving the carriage 2 to move along the slide rails, and is characterized in that the bed is provided with a clamping spindle 2 located between the clamping spindle 1 and the carriage 2.

[0007] In the above-mentioned CNC machine tool, the clamping spindle 2 is arranged on a slide rail, and the bed is provided with a driving structure 3 for driving the clamping spindle 2 to move along the slide rail.

[0008] In the above-mentioned CNC machine tool, the connecting seat of the clamping spindle 2 is fixedly connected to a pushing cylinder, the pushing cylinder is located between the clamping spindle 2 and the clamping spindle 1, the piston rod of the pushing cylinder is fixedly connected to a mounting seat, and an hourglass-shaped pushing roller is hinged in the mounting seat.

[0009] In the above-mentioned CNC machine tool, the plane where the two slide rails are located intersects with the ground plane to form an inclined plane.

[0010] In the above-mentioned CNC machine tool, the driving structure 1 includes a driving motor 1 fixedly connected to the bed, the output shaft of the driving motor 1 is connected to a screw 1, the drag plate 1 is fixedly connected to a screw nut 1 sleeved on the screw 1, the driving structure 2 includes a driving motor 2 fixedly connected to the bed, the output shaft of the driving motor 2 is connected to a screw 2, the drag plate 2 is fixedly connected to a screw nut 2 sleeved on the screw 2, the driving structure 3 includes a driving motor 3 fixedly connected to the bed, the output shaft of the driving motor 3 is connected to a screw 3, and the connecting seat of the clamping spindle 2 is fixedly connected to a screw nut 3 sleeved on the screw 3.

[0011] In the above-mentioned CNC machine tool, an automatic loading mechanism is provided on the side of the bed, and the automatic loading mechanism includes a hoist, a rodless cylinder 1, and a rodless cylinder 2. A loading rack is fixedly connected to the side of the bed, a rodless cylinder 1 is fixedly connected to the loading rack, a movable part of the rodless cylinder 1 is fixedly connected to a moving rack, a loading plate is fixedly connected to the moving rack, and the loading plate has a recessed loading trough, the rodless cylinder 2 is fixedly connected to the moving rack, a loading block extending into the loading trough is fixedly connected to the movable part of the rodless cylinder, and the top of the hoist has an inclined plate inclined toward the upper material plate side.

[0012] Compared with the prior art, the CNC machine tool clamps the long-axis workpiece by clamping the first clamping spindle and the second clamping spindle, so the clamping effect is good, the two ends of the long-axis workpiece will not shake, and the processing accuracy is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a three-dimensional structural diagram of this CNC machine tool.

[0014] Figure 2 This is a partial structural diagram of this CNC machine tool.

[0015] Figure 3 It is a structural diagram of the automatic feeding mechanism in this CNC machine tool.

[0016] Figure 4 yes Figure 2 Enlarged view of the structure of part A in the middle circle.

[0017] In the figure, 1, bed; 2, slide rail; 3, clamping spindle 1; 4, drag plate 1; 5, drag plate 2; 6, clamping spindle 2; 61, connecting seat; 7, ejecting cylinder; 8, mounting seat; 9, ejecting roller; 10, driving motor 1; 11, screw rod 1; 12, driving motor 2; 13, screw rod 2; 14, driving motor 3; 15, screw rod 3; 16, hoist; 161, tilting plate; 17, rodless cylinder 1; 18, rodless cylinder 2; 19, loading rack; 20, moving rack; 21, loading plate; 22, loading block. DETAILED DESCRIPTION

[0018] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0019] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the CNC machine tool includes a bed 1, on which two parallel slide rails 2 are provided, a clamping spindle 1 3 is fixedly connected to the bed 1, a slide plate 1 4 and a slide plate 2 5 are provided on both sides of the clamping spindle 1 3, the bed 1 is provided with a driving structure 1 for driving the slide plate 1 4 to move along the slide rail 2, the bed 1 is also provided with a driving structure 2 for driving the slide plate 2 5 to move along the slide rail 2, and a clamping spindle 2 6 is provided on the bed 1 between the clamping spindle 1 3 and the slide plate 2 5.

[0020] In this CNC machine tool, machining tools are arranged on the carriage 1 4 and the carriage 2 5. When in use, the long-axis workpiece is clamped by the clamping spindle 1 3 and the clamping spindle 2 6, and the clamping effect is good. The driving structure 1 drives the carriage 1 4 to move, and the driving structure 2 drives the carriage 2 5 to move, so that the machining tools on the carriage 1 4 and the carriage 2 5 can process both ends of the long-axis workpiece at the same time. During the machining process, the two ends of the shaft workpiece will not shake, and the machining accuracy is high. In this embodiment, the clamping spindle 1 3 is driven to rotate by the motor, and the clamping spindle 2 6 is driven to rotate. Of course, in actual manufacturing, the clamping spindle 1 3 and the clamping spindle 2 6 can be driven to rotate by their own motors, and the rotation speed can be kept consistent during machining.

[0021] In further detail, the clamping spindle 2 6 is arranged on the slide rail 2, and the bed 1 is provided with a driving structure 3 for driving the clamping spindle 2 6 to move along the slide rail 2. The driving structure 3 drives the clamping spindle 2 6 to move, so that the distance between the clamping spindle 2 6 and the clamping spindle 1 3 can be adjusted according to the length of the long shaft workpiece, and the ideal clamping effect can be achieved for long shaft workpieces of different lengths, with good applicability and high processing accuracy.

[0022] The connection seat 61 of the clamping spindle 2 6 is fixedly connected with a material ejection cylinder 7, which is located between the clamping spindle 2 6 and the clamping spindle 1 3. The piston rod of the material ejection cylinder 7 is fixedly connected with a mounting seat 8, and an hourglass-shaped material ejection roller 9 is hinged in the mounting seat 8. After the long-axis workpiece passes through the clamping spindle 1 3, the piston rod of the material ejection cylinder 7 extends so that the material ejection roller 9 is supported on the long-axis workpiece, which prevents the long-axis workpiece from tilting and not easily passing through the clamping spindle 2 6, thereby improving the working stability.

[0023] The plane where the two slide rails 2 are located intersects with the ground plane to form an inclined plane. This CNC machine tool adopts an inclined rail layout, which is convenient for the installation of parts and has good rigidity and stability. In this embodiment, the plane where the two slide rails 2 are located intersects with the ground plane to form an inclined plane with an angle of 45°. Of course, the above inclined plane angle can be set according to actual manufacturing requirements.

[0024] The driving structure 1 includes a driving motor 10 fixedly connected to the bed 1, the output shaft of the driving motor 10 is connected to a screw 11, and the drag plate 14 is fixedly connected to a screw nut 1 sleeved on the screw 11. The driving structure 2 includes a driving motor 2 12 fixedly connected to the bed 1, the output shaft of the driving motor 2 12 is connected to a screw 2 13, and the drag plate 2 5 is fixedly connected to a screw nut 2 sleeved on the screw 2 13. The driving structure 3 includes a driving motor 3 14 fixedly connected to the bed 1, the output shaft of the driving motor 3 14 is connected to a screw 3 15, and the connecting seat 61 of the clamping spindle 2 6 is fixedly connected to a screw nut 3 sleeved on the screw 3 15. The driving motor 10 drives the screw rod 11 to rotate, the screw rod 11 drives the screw nut 1 and the drag plate 1 4 to move along the slide rail 2 together, the driving motor 2 12 drives the screw rod 2 13 to rotate, the screw rod 2 13 drives the screw nut 2 and the drag plate 2 5 to move along the slide rail 2 together, the driving motor 3 14 drives the screw rod 3 15 to rotate, the screw rod 3 15 drives the screw nut 3 and the clamping spindle 2 6 to move along the slide rail 2 together.

[0025] An automatic loading mechanism is provided on one side of the bed 1, and the automatic loading mechanism includes a hoist 16, a rodless cylinder 17, and a rodless cylinder 2 18. A loading rack 19 is fixedly connected to the side of the bed 1, and a rodless cylinder 17 is fixedly connected to the loading rack 19. The movable part of the rodless cylinder 17 is fixedly connected to a moving rack 20, and a loading plate 21 is fixedly connected to the moving rack 20. The loading plate 21 has a recessed loading trough, and the rodless cylinder 2 18 is fixedly connected to the moving rack 20. The movable part of the rodless cylinder is fixedly connected to a loading block 22 extending into the loading trough. The top of the hoist 16 has an inclined plate 161 inclined toward the upper feeding plate 21 side.

[0026] The lifting machine 16 lifts the long-axis workpiece to the inclined plate 161, and the long-axis workpiece slides along the inclined plate 161 to the loading plate 21. Due to the setting of the loading trough, the long-axis workpiece is stably located in the loading plate 21, and the rodless cylinder 17 works to move the movable frame 20, the rodless cylinder 2 18, and the loading frame 19 equipped with the long-axis workpiece toward the side of the clamping spindle 1 3. Then the rodless cylinder 2 18 works, and the loading block 22 pushes the long-axis workpiece to move along the loading plate 21 until the long-axis workpiece is inserted into the clamping spindle 1 3 and the clamping spindle 2 6. Then the components are reset. When loading again, the new long-axis workpiece pushes the previously processed long-axis workpiece out of the clamping spindle 1 3 and the clamping spindle 2 6 for unloading, and the degree of automation is high.

[0027] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The specific embodiments described in this article are only used to illustrate the spirit of the utility model. The technicians in the technical field of the utility model can make various modifications or supplements to the specific embodiments described or replace them in a similar way, but they will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

Claims

1. A CNC machine tool, comprising a bed (1), the bed (1) being provided with two parallel slide rails (2), the bed (1) being fixedly connected with a clamping spindle (3), the slide rail (2) being provided with a carriage (4) and a carriage (5) located on both sides of the clamping spindle (3), the bed (1) being provided with a driving structure (1) for driving the carriage (4) to move along the slide rail (2), the bed (1) being further provided with a driving structure (2) for driving the carriage (5) to move along the slide rail (2), characterized in that: The bed (1) is provided with a second clamping spindle (6) located between the first clamping spindle (3) and the second carriage (5).

2. A CNC machine tool according to claim 1, characterized in that: The second clamping spindle (6) is arranged on the slide rail (2), and the bed (1) is provided with a driving structure three for driving the second clamping spindle (6) to move along the slide rail (2).

3. A CNC machine tool according to claim 1 or 2, characterized in that: The connecting seat (61) of the second clamping spindle (6) is fixedly connected to a material pushing cylinder (7), and the material pushing cylinder (7) is located between the second clamping spindle (6) and the first clamping spindle (3). The piston rod of the material pushing cylinder (7) is fixedly connected to a mounting seat (8), and an hourglass-shaped material pushing roller (9) is hinged in the mounting seat (8).

4. A CNC machine tool according to claim 3, characterized in that: The plane where the two slide rails (2) are located intersects with the ground plane to form an inclined plane.

5. A CNC machine tool according to claim 4, characterized in that: The driving structure 1 comprises a driving motor 1 (10) fixedly connected to the bed (1), the output shaft of the driving motor 1 (10) being connected to a screw rod 1 (11), the drag plate 1 (4) being fixedly connected to a screw nut 1 sleeved on the screw rod 1 (11), the driving structure 2 comprises a driving motor 2 (12) fixedly connected to the bed (1), the output shaft of the driving motor 2 (12) being connected to a screw rod 2 (13), the drag plate 2 (5) being fixedly connected to a screw nut 2 sleeved on the screw rod 2 (13), the driving structure 3 comprises a driving motor 3 (14) fixedly connected to the bed (1), the output shaft of the driving motor 3 (14) being connected to a screw rod 3 (15), and the connecting seat (61) of the clamping spindle 2 (6) being fixedly connected to a screw nut 3 sleeved on the screw rod 3 (15).

6. A CNC machine tool according to claim 5, characterized in that: An automatic loading mechanism is provided on the side of the bed (1), and the automatic loading mechanism comprises a lift (16), a rodless cylinder 1 (17), and a rodless cylinder 2 (18). A loading frame (19) is fixedly connected to the side of the bed (1), a rodless cylinder 1 (17) is fixedly connected to the loading frame (19), a movable portion of the rodless cylinder 1 (17) is fixedly connected to a moving frame (20), a loading plate (21) is fixedly connected to the moving frame (20), and the loading plate (21) has a recessed loading groove, the rodless cylinder 2 (18) is fixedly connected to the moving frame (20), a loading block (22) extending into the loading groove is fixedly connected to the movable portion of the rodless cylinder, and the top of the lift (16) has an inclined plate (161) inclined toward the upper loading plate (21).

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