Numerical control vertical lathe type lathe center device

Abstract

The utility model is suitable for the technical field of lathes, and provides a numerical control vertical lathe type lathe center device which comprises a machine tool table, a main shaft fixing cover, a main shaft, a main shaft and a main shaft, the flange base is mounted on the main shaft fixing cover; the supporting assembly is installed on the flange base, and a rotatable tip is installed on the supporting assembly; and the clamping assembly is installed on the machine tool spindle, one end of the workpiece is located in the clamping assembly, and the other end of the workpiece is tightly jacked through the rotatable tip. Due to the arrangement of the clamping assembly and the rotatable tip, when a workpiece is machined, the rotatable tip is firstly driven to be away from the main shaft of the lathe, one end of the workpiece is fixed in the clamping assembly, then the rotatable tip is driven to rotate to the position above the rotating shaft of the main shaft of the lathe, the tip is automatically pressed downwards to tip the workpiece, and normal machining can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of lathes, and in particular relates to a center device of a CNC vertical lathe. Background Art

[0002] When machining shaft parts, the workpiece is usually clamped with a chuck for direct rough turning or finish turning. When the workpiece diameter is greater than 30 mm, the overhang length should not be greater than 5 times the diameter. When the workpiece diameter is less than 30 mm, the overhang length should not be greater than 3 times the diameter. If the overhang is longer, the rigidity of the workpiece will be weakened, which will cause vibration during machining. If this situation is more serious, it may cause the workpiece to break or be thrown out, causing a collision with the machine and other serious consequences.

[0003] CNC lathes are divided into horizontal lathes and vertical lathes. The main difference lies in the spindle: the spindle of a horizontal lathe is on the left side of the machine tool, lying flat on the bed and the spindle is horizontal, while the spindle of a vertical lathe is above the bed and the spindle is upright. When processing longer shaft parts, a horizontal lathe will be selected. Horizontal lathes are generally equipped with tailstock center auxiliary functions as standard. The center hole is drilled on the end face of the workpiece before the product is clamped. It is easy to achieve processing with the center. The center can play a centering and positioning role to improve the rigidity of the workpiece and prevent the workpiece from vibrating. However, it is difficult to process longer shaft parts on a vertical CNC lathe, because the existing vertical CNC lathes on the market are suitable for processing large-size, large-diameter, short-length workpieces, such as discs, hubs, gear blanks, etc., and basically cannot process longer shaft parts, so the processing range of vertical lathes is limited. Utility Model Content

[0004] The purpose of the embodiment of the utility model is to provide a center device for a CNC vertical lathe, aiming to solve the problems existing in the above-mentioned background technology.

[0005] The utility model is implemented in this way: a CNC vertical lathe center device comprises:

[0006] A machine tool bed, wherein a spindle fixing cover is installed on the machine tool bed;

[0007] A flange base, wherein the flange base is mounted on the main shaft fixing cover;

[0008] A support assembly is mounted on the flange base, and a rotatable center is mounted on the support assembly;

[0009] The clamping assembly is installed on the spindle of the machine tool. One end of the workpiece is located in the clamping assembly, and the other end of the workpiece is tightened by a rotatable center.

[0010] Preferably, the support assembly comprises:

[0011] A supporting connecting rod is mounted on the flange base;

[0012] A positioning transition plate is mounted on the supporting connecting rod, and the rotatable top is mounted on the positioning transition plate.

[0013] Preferably, the rotatable top comprises:

[0014] A rotating cylinder mounted on the positioning transition plate;

[0015] A cross arm, the piston rod of the rotary cylinder is connected to one end of the cross arm;

[0016] The rotary top is connected to the other end of the horizontal arm.

[0017] Preferably, the clamping assembly comprises:

[0018] Hydraulic chuck, mounted on the machine tool spindle;

[0019] A clamping jaw is mounted on the hydraulic chuck, and one end of the workpiece is fixed in the clamping jaw.

[0020] Preferably, the spindle fixing cover is installed on the machine tool bed through a first bolt, the flange base is installed on the spindle fixing cover through a second bolt, the supporting connecting rod is connected to the positioning transition plate through a third bolt, the rotating cylinder is connected to the rotating cylinder through a fourth bolt, and the cross arm is connected to the rotating cylinder through a fifth bolt.

[0021] The embodiment of the utility model provides a CNC vertical lathe center device to address the deficiencies in the prior art. It is provided with a clamping assembly and a rotatable center. When processing a workpiece, the rotatable center is first driven away from the main shaft of the lathe, one end of the workpiece is fixed in the clamping assembly, and then the rotatable center is driven to rotate upward to the rotating axis of the lathe main shaft, and the center is automatically pressed down to the workpiece, and normal processing can be performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic structural diagram of a CNC vertical lathe center device provided by an embodiment of the utility model;

[0023] Figure 2 Another structural schematic diagram of a center device of a CNC vertical lathe provided by an embodiment of the utility model;

[0024] Figure 3 An exploded view of a rotatable center in a center device of a CNC vertical lathe provided in an embodiment of the utility model;

[0025] Figure 4 The present invention is a schematic structural diagram of a clamping assembly in a center device of a CNC vertical lathe provided in an embodiment of the present invention.

[0026] In the attached figure: 1-flange base; 2-support connecting rod; 3-positioning transition plate; 4-rotating cylinder; 5-cross arm; 6-rotating center; 7-machine tool bed; 8-spindle fixing cover; 9-hydraulic chuck; 10-claw; 11-workpiece; 12-first bolt; 13-second bolt; 14-third bolt; 15-fourth bolt; 16-fifth bolt. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0028] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0029] like Figure 1 to Figure 2 As shown, a structural diagram of a CNC vertical lathe center device provided by an embodiment of the utility model includes:

[0030] A machine tool bed 7, on which a spindle fixing cover 8 is installed;

[0031] A flange base 1, wherein the flange base 1 is mounted on the spindle fixing cover 8;

[0032] A support assembly is mounted on the flange base 1, and a rotatable top is mounted on the support assembly;

[0033] The clamping assembly is mounted on the main spindle of the machine tool. One end of the workpiece 11 is located in the clamping assembly, and the other end of the workpiece 11 is tightened by a rotatable center.

[0034] In one embodiment of the utility model, the CNC vertical lathe center device is provided with a clamping assembly and a rotatable center to address the deficiencies in the prior art. When processing the workpiece 11, the rotatable center is first driven away from the main shaft of the lathe, one end of the workpiece 11 is fixed in the clamping assembly, and then the rotatable center is driven to rotate upward to the rotation axis of the lathe main shaft, and the center is automatically pressed down to the top of the workpiece 11, and normal processing can be performed (before processing, the center of the rotatable center needs to be adjusted to coincide with the axis of the lathe main shaft).

[0035] like Figure 1 and Figure 3 As shown, as a preferred embodiment of the utility model, the support assembly includes:

[0036] A supporting connecting rod 2 is mounted on the flange base 1;

[0037] The positioning transition plate 3 is mounted on the supporting connecting rod 2 , and the rotatable top is mounted on the positioning transition plate 3 .

[0038] The lower ends of the four supporting connecting rods 2 are threadedly fixed on the flange base 1, and the upper ends are matched with the positioning transition plate 3 to serve as a supporting platform for the rotatable top.

[0039] like Figure 3 As shown, as another preferred embodiment of the utility model, the rotatable top includes:

[0040] A rotating cylinder 4 is installed on the positioning transition plate 3;

[0041] A cross arm 5, wherein the piston rod of the rotary cylinder 4 is connected to one end of the cross arm 5;

[0042] The rotary top 6 is connected to the other end of the cross arm 5 .

[0043] By starting the rotating cylinder 4 , the cross arm 5 can be driven to rotate, and the rotary top 6 is fixed on the cross arm 5 through a Morse taper, and then the rotary top 6 can be driven to rotate through the cross arm 5 .

[0044] like Figure 4 As shown, as a preferred embodiment of the utility model, the clamping assembly includes:

[0045] A hydraulic chuck 9 is mounted on the main spindle of the machine tool;

[0046] A clamping jaw 10 is mounted on the hydraulic chuck 9 , and one end of the workpiece 11 is fixed in the clamping jaw 10 .

[0047] The clamping jaws 10 are mounted on the hydraulic chuck 9, and the workpiece 11 is tightened by the clamping jaws 10 through lathe control.

[0048] like Figure 3 to Figure 4 As shown, as a preferred embodiment of the utility model, the spindle fixing cover 8 is installed on the machine tool bed 7 through the first bolt 12, the flange base 1 is installed on the spindle fixing cover 8 through the second bolt 13, the supporting connecting rod 2 is connected to the positioning transition plate 3 through the third bolt 14, the rotating cylinder 4 is connected to the rotating cylinder 4 through the fourth bolt 15, and the cross arm 5 is connected to the rotating cylinder 4 through the fifth bolt 16.

[0049] When installing the device, first remove the six first bolts 12, do not remove the spindle fixing cover 8, continue to use the holes of the spindle fixing cover 8 and the six threaded holes corresponding to the machine tool bed 7, and place the flange base 1 directly on the spindle fixing cover 8, and correspond to the position (when making the flange base 1, the outermost two hole positions of the threaded holes of the four supporting connecting rods 2 should be considered that the size cannot be close to the maximum rotation diameter of the machine tool, and the entire CNC vertical lathe center device should be designed on the left side of the spindle, that is, on the opposite side of the machining tool, in order to prevent the device from interfering with the machining. The positions of the six light holes are consistent with the hole positions of the spindle fixing cover 8, and the centers of the four threaded holes and the six light holes coincide with the rotation center of the spindle of the flange base 1 machine tool), and tighten with six second bolts 13. The lower ends of the four supporting connecting rods 2 are threadedly fixed on the flange base 1, and the upper ends are matched with the positioning transition plate 3 (the length of the positioning transition plate 3 cannot be close to the maximum rotation diameter of the machine tool, and the width should be set considering the rotation diameter of the workpiece. The positioning transition plate 3 has four countersunk holes for positioning the supporting connecting rods 2 and four positioning pull-rotating cylinders 4 The rotating cylinder 4 is fixed on the positioning transition plate 3 by tightening with four third bolts 14 (the model of the rotating cylinder 4 can be MKB50-50R heavy-duty rotating downward pressure cylinder. The top of the piston rod in the rotating cylinder 4 is provided with a positioning square groove, which is convenient for locating the position of the cross arm 5. The position of the fixed rotating cylinder 4 should fully consider the distance relationship with the rotary axis of the machine tool spindle to ensure that the piston rod axis on the rotating cylinder 4 is aligned with the axis of the machine tool spindle. The distance between the two holes on the cross arm 5 is equal to the distance between the two holes), the cross arm 5 (the Morse taper hole of the cross arm 5 for installing the rotary rotary center 6 should be coaxial and concentric with the machine tool spindle, and the hole distance between the piston rod axis of the rotary cylinder 4 is calculated, that is, the hole distance between the cross arm 5 matching the piston rod and the hole distance between the cross arm 5 matching the rotary center 6 should be equal to the distance between the piston rod axis on the rotary cylinder 4 and the machine tool spindle axis, and the cross arm 5 matching the piston rod has a better transition fit accuracy) is fixed on the piston rod of the rotary cylinder 4 with a positioning square groove and tightened with the fifth bolt 16.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A CNC vertical lathe center device, characterized in that: include: A machine tool bed (7), wherein a spindle fixing cover (8) is installed on the machine tool bed (7); A flange base (1), wherein the flange base (1) is mounted on the spindle fixing cover (8); A support assembly is mounted on the flange base (1), and a rotatable center is mounted on the support assembly; The clamping assembly is mounted on the main spindle of the machine tool. One end of the workpiece (11) is located in the clamping assembly, and the other end of the workpiece (11) is tightened by a rotatable center.

2. The CNC vertical lathe center device according to claim 1 is characterized in that: The support assembly comprises: A supporting connecting rod (2) mounted on the flange base (1); A positioning transition plate (3) is mounted on the supporting connecting rod (2), and the rotatable top is mounted on the positioning transition plate (3).

3. The center device of the CNC vertical lathe according to claim 2 is characterized in that: The rotatable top comprises: A rotating cylinder (4) mounted on the positioning transition plate (3); A cross arm (5), wherein the piston rod of the rotary cylinder (4) is connected to one end of the cross arm (5); The rotary top (6) is connected to the other end of the cross arm (5).

4. The CNC vertical lathe center device according to claim 1, characterized in that: The clamping assembly comprises: A hydraulic chuck (9) mounted on the machine tool spindle; A clamping claw (10) is mounted on the hydraulic chuck (9), and one end of the workpiece (11) is fixed in the clamping claw (10).

5. The center device of the CNC vertical lathe according to claim 3 is characterized in that: The spindle fixing cover (8) is mounted on the machine tool bed (7) via a first bolt (12), the flange base (1) is mounted on the spindle fixing cover (8) via a second bolt (13), the supporting connecting rod (2) is connected to the positioning transition plate (3) via a third bolt (14), the rotary cylinder (4) is connected to the rotary cylinder (4) via a fourth bolt (15), and the cross arm (5) is connected to the rotary cylinder (4) via a fifth bolt (16).

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