CN212239993U - New Precision Compound Six-axis Linkage CNC Machine Tool - Google Patents

Abstract

The purpose of this utility model is to design a novel precision composite six-axis linkage CNC machine tool. The tool seat is installed on the sliding seat, and the tool seat swings in the vertical plane relative to the sliding seat, and the bed is provided with a driving sliding seat to move up and down. The Z-axis drive device and the X-axis drive device and the Y-axis drive device that move along the X and Y directions, the bed is also provided with a rotary machining platform, and the rotary machining platform is provided with a workpiece that clamps and rotates and rotates. For the positioning clamping mechanism, the rotation center of the rotary machining platform is consistent with the Z direction, and the rotation center of the clamping mechanism is consistent with the X direction. Due to the setting of the Z, X and Y axis drive devices, the tool on the tool holder can be moved to any position in the operation area, the clamping mechanism and the rotary machining platform can be rotated arbitrarily to realize the rotary motion of the workpiece, and the tool holder can be Swing in the vertical plane, so as to realize the processing method of six-axis linkage, which can adapt to the processing of parts with different complex surface structures and meet the high-precision processing of workpieces.

Description

New Precision Compound Six-axis Linkage CNC Machine Tool

technical field

The utility model relates to the technical field of machine tool precision machining, in particular to a novel precision composite six-axis linkage numerically controlled machine tool.

Background technique

Representing the highest state of the machine tool manufacturing industry is the precision CNC machine tool with more than five-axis linkage, which plays a very important role in industrial production. With the development of machining in the direction of integration, high speed, high precision and multi-axis linkage, multi-axis CNC machining has become the mainstream of modern manufacturing technology. The traditional three- and four-axis CNC machine tools have low processing adaptability, concentrated processes, weak multi-purpose functions, difficult to process complex curved surfaces, and unstable surface quality.

Utility model content

The purpose of the utility model is to provide a novel precision compound six-axis linkage numerical control machine tool with complete functions and high machining accuracy.

In order to achieve the above purpose, the technical scheme adopted by the present invention is as follows: a new type of precision composite six-axis linkage CNC machine tool, a tool holder for clamping a tool is arranged on the bed, the tool holder is installed on a sliding seat, and the tool holder is opposite to the sliding seat. The seat swings in the vertical plane, and the bed is provided with a Z-axis driving device that drives the sliding seat to move up and down, as well as an X-axis driving device and a Y-axis driving device that move along the X and Y directions. The bed is also provided with The rotary processing platform is provided with a clamping mechanism for clamping the workpiece, rotating and positioning it. The rotation center of the rotary processing platform is consistent with the Z direction, and the rotation center of the clamping mechanism is consistent with the X direction.

In the above scheme, due to the settings of Z-axis drive device, X-axis drive device and Y-axis drive device, the tool on the tool holder can be moved to any position in the operation area, the workpiece is clamped on the clamping mechanism, the clamping mechanism and rotation The machining platform can be rotated arbitrarily to realize the rotary motion of the workpiece, and the tool holder can swing in the vertical plane, so as to realize the CNC machining method of six-axis linkage, which can adapt to the machining of parts with different complex surface structures, and improve the machining accuracy of the workpiece. high.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the machine tool;

Figure 2 is a schematic diagram of the structure of the tool holder installed on the tool holder;

Fig. 3 is the structural schematic diagram of the electric spindle installed on the tool holder;

Fig. 4 is the top view of Fig. 1;

Fig. 5 is the partial structure schematic diagram of Fig. 3;

Fig. 6 is the installation structure diagram of the tool magazine;

FIG. 7 is a schematic view of the structure of the base.

Detailed ways

The present utility model will be discussed in further detail below with reference to FIGS. 1 to 7 .

A new type of precision composite six-axis linkage CNC machine tool, the bed 10 is provided with a tool holder 20 for clamping tools, the tool holder 20 is mounted on a sliding seat 31, and the tool holder 20 swings relative to the sliding seat 31 in a vertical plane (that is, rotating around the B-axis in the figure), the bed 10 is provided with a Z-axis driving device that drives the sliding seat 31 to move up and down, and an X-axis driving device and a Y-axis driving device that move along the X and Y directions. The body 10 is also provided with a rotary processing platform 40, and the rotary processing platform 40 is provided with a clamping mechanism 50 for clamping the workpiece and rotating and positioning it. ) coincides with the Z direction, and the rotation center of the clamping mechanism 50 (ie, the A axis shown in the figure) coincides with the X direction. Due to the arrangement of the Z-axis driving device, the X-axis driving device and the Y-axis driving device, the tool holder 20 can be moved to any position in the operation area, that is to say, the tool installed on the tool holder 20 can be moved to any position in the operation area to be processed The workpiece is processed; the clamping mechanism 50 and the rotary processing platform 40 can be freely rotated to realize the rotary motion of the workpiece. The workpiece to be processed can be processed on the front and back and various parts with only one clamping. The error is small and the machining accuracy is high. At the same time, the production efficiency is also improved; in addition, when the workpiece to be processed does not need to be disassembled and assembled from the clamping mechanism 50 for many times, different tools, such as turning tools, grinding heads, milling cutters, etc., can be installed on the tool holder 20 , the workpiece is processed in all directions, the error is small, the processing precision is high, and the production efficiency is also improved. The CNC machine tool in this application adopts a six-axis linkage CNC machining method consisting of three linear axes of X, Y, and Z and three rotating axes of A, B, and C, which has high process integration and high compounding degree, and can adapt to different complex curved surfaces. The machining of structural parts can ensure high machining accuracy of the workpiece.

Further, the Y-axis drive device includes a box body 61 provided with two sides of the rotary processing platform 40, the upper end surface of the box body 61 is provided with a first linear guide rail 62, and the length direction of the first linear guide rail 62 is the same as that of the Y axis. The first linear guide rail 62 and the first sliding block 63 form a sliding fit, the two ends of the beam 64 are respectively fixed with the first sliding block 63 on the two boxes 61, and the transverse beam 64 is provided with a second linear guide rail 65, the length direction of the second linear guide 65 is parallel to the X direction, the second linear guide 65 is provided with a second sliding block 66, and the second sliding block 66 is provided with a third linear guide 67 parallel to the Z direction. The sliding seat 31 and the third linear guide 67 form a sliding fit. The cross beam 64 is arranged above the two boxes 61 and moves synchronously with the first sliding block 63 . Therefore, the high bending resistance that can withstand the heavy external load in the XYZ direction reduces the torsional error between the X axis and the Y axis, and ensures the rigidity and precision of the CNC machine tool during processing. The three linear guides adopt precision rolling guides, which can bear radial and normal loads, and have the performance of rigid bending resistance and high rigidity.

The tool seat 20 includes a fixed seat 21 fixed on the sliding seat 31. The middle of the fixed seat 21 is provided with a rotary seat 22 that forms a radial rotation fit and an axial limit fit with the fixed seat 21. The end of the rotary seat 22 is connected with a The turning tool rest 23 or the electric spindle tool rest 24 is connected, and the torque motor mechanism drives the rotary base 22 to swing to drive the turning tool rest 23 or the electric spindle tool rest 24 to swing in the vertical plane. The swing angle of the rotating base 22 is -170°-+170°. For turning tools, the tool holder is shown in Figure 2. For milling cutters, grinding heads, etc., the tool holder is shown in FIG. 3 , so the turning tool holder 23 or the electric spindle tool holder 24 is replaceably installed on the rotary seat 22 and is in the vertical plane relative to the sliding seat 31 Swing, realize the five-axis or six-axis linkage movement of CNC machine tools, and can process different complex parts. It has the advantages of concentrated process, high processing efficiency, and minimal positioning error of repeated clamping. When necessary (that is, when the tool is a grinding or milling tool), the driving mechanism can drive the rotary seat 21 to drive the tool to swing in the vertical plane (-170°—+170°), so that the milling cutter or grinding head can avoid the vertex cutting Interfering with cutting to ensure that the cutting point of the tool has a certain linear speed, which can effectively improve the machining accuracy and surface roughness of the workpiece surface.

In order to conveniently replace the tool, a protective plate 71 is fixed on the box body 61, the plate surface of the protective plate 71 is located in the plumb surface, the protective plate 71 is provided with an air cylinder 72, and a tool magazine 73 is arranged above the air cylinder 72, and the air cylinder 72 operates The tools are transferred between the tool magazine 73 and the motor spindle tool rest 24 .

Since the sliding seat 31 is connected with the tool seat 20, the tool seat 20 is a component for installing the tool, so in order to ensure the stability of the sliding seat 31 during the Z-direction movement, the upper end of the second sliding block 66 is connected with a counterweight balance system 32. Through the setting of the counterweight balance system 32, the stability of the movement of the sliding seat 31 in the Z direction is ensured, and the influence of gravity is eliminated, so as to ensure the stability and response speed of the movement of the spindle head, and effectively protect the safety of the workpiece and the tool. Improve the machining accuracy of the workpiece.

Further, the clamping mechanism 50 includes a fixed seat 51 fixed on the rotary processing platform 40 , the fixed seat 51 is provided with a precision three-jaw chuck 52 , and the axis of the precision three-jaw chuck 52 is arranged horizontally. The rotary processing platform 40 and the precision three-jaw chuck 52 can be rotated at any angle, and the workpiece can be rotated in the axial direction of the three-jaw chuck 52 and in the horizontal plane during operation. The precision three-jaw chuck 52 can provide reliable clamping. The workpiece is clamped and positioned by the tightening force. At the same time, when the precision three-jaw chuck 52 rotates at a high speed, it can realize the cutting, grinding, grinding and other processes of the workpiece. When the precision three-jaw chuck 52 drives the workpiece to rotate at a certain angle, it can When the rotary machining platform 40 rotates, the axis direction of the three-jaw chuck 52 can be adjusted, and the workpiece can be processed with oblique holes and other processes; the processing of different surfaces, different angles and different processes can be realized in one clamping.

In order to improve the machining accuracy, the rotary machining platform 40 is also provided with a tool setter 41 and a precision positioning fixture 42 , one precision positioning fixture 42 is installed on each side of the rotary machining platform 40 , and the length direction of the precision positioning fixture 42 is the same as that of the precision positioning fixture 42 . The axial directions of the three-jaw chucks 52 are the same.

The four corner positions of the lower end of the bed 10 are connected to the base 92 through air vibration isolation springs 91 to play a buffering role. The base 92 includes upper and lower plates 921 and 922 arranged up and down, which are mainly used for adjusting the base 92 during installation. The upper plate 921 is connected with the air vibration isolation spring 91 by screws, and the side of the bed 10 is also provided with a chip conveyor 93 for discharging chips.

Claims (9)

1. The utility model provides a digit control machine tool of six linkages of novel accurate complex which characterized in that: the lathe bed (10) is provided with a tool apron (20) for clamping a tool, the tool apron (20) is installed on a sliding seat (31), the tool apron (20) swings in the vertical plane relative to the sliding seat (31), the lathe bed (10) is provided with a Z-axis driving device for driving the sliding seat (31) to move up and down, an X-axis driving device and a Y-axis driving device for driving the sliding seat (31) to move in the X direction and the Y direction, the lathe bed (10) is further provided with a rotary processing platform (40), the rotary processing platform (40) is provided with a clamping mechanism (50) for clamping a workpiece and enabling the workpiece to rotate and be positioned, the rotation center of the rotary processing platform (40) is consistent with the Z direction, and the rotation center of the clamping mechanism (50).

2. The novel precise composite six-axis linkage numerical control machine tool according to claim 1, characterized in that: the Y-axis driving device comprises box bodies (61) arranged on two sides of a rotary processing platform (40), wherein first linear guide rails (62) are arranged on the upper end face of each box body (61), the length direction of each first linear guide rail (62) is parallel to the Y direction, each first linear guide rail (62) is in sliding fit with each first sliding block (63), two ends of each cross beam (64) are fixedly connected with the first sliding blocks (63) on the two box bodies (61) respectively, each cross beam (64) is provided with a second linear guide rail (65), the length direction of each second linear guide rail (65) is parallel to the X direction, each second linear guide rail (65) is provided with a second sliding block (66), each second sliding block (66) is provided with a third linear guide rail (67) parallel to the Z direction, and each sliding seat (31) is in sliding fit with the third linear guide rail (67).

3. The novel precise composite six-axis linkage numerical control machine tool according to claim 2, characterized in that: the tool apron (20) comprises a fixed seat (21) fixed on a sliding seat (31), a rotating seat (22) which is in radial rotation fit and axial limiting fit with the fixed seat (21) is arranged in the middle of the fixed seat (21), the end part of the rotating seat (22) is connected with a turning tool holder (23) or an electric spindle tool holder (24), and a torque motor mechanism drives the rotating seat (22) to drive the turning tool holder (23) or the electric spindle tool holder (24) to swing in a vertical plane.

4. The novel precise composite six-axis linkage numerical control machine tool according to claim 3, characterized in that: the swing angle of the rotating seat (22) is-170 degrees to +170 degrees.

5. The novel precise composite six-axis linkage numerical control machine tool according to claim 2, characterized in that: a protection plate (71) is fixed on the box body (61), the surface of the protection plate (71) is located in a plumb surface, an air cylinder (72) is arranged on the protection plate (71), a cutter warehouse (73) is arranged above the air cylinder (72), and the air cylinder (72) acts to transfer a cutter between the cutter warehouse (73) and the electric spindle tool rest (24).

6. The novel precise composite six-axis linkage numerical control machine tool according to claim 2, characterized in that: the upper end of the second sliding block (66) is connected with a counterweight balance system (32).

7. The novel precise composite six-axis linkage numerical control machine tool according to claim 1, characterized in that: the clamping mechanism (50) comprises a fixed seat (51) fixed on the rotary machining platform (40), a precise three-jaw chuck (52) is arranged on the fixed seat (51), and the axis direction of the precise three-jaw chuck (52) is arranged horizontally.

8. The novel precise composite six-axis linkage numerical control machine tool according to claim 7, characterized in that: the rotary machining platform (40) is further provided with a tool setting gauge (41) and a precision positioning clamp (42), the precision positioning clamp (42) is respectively arranged on two sides of the rotary machining platform (40), and the length direction of the precision positioning clamp (42) is consistent with the axis direction of the precision three-jaw chuck (52).

9. The novel precise composite six-axis linkage numerical control machine tool according to claim 1, characterized in that: four corner positions of the lower end of the lathe bed (10) are connected with a base (92) through air vibration isolation springs (91), the base (92) comprises an upper plate, a middle plate and a lower plate (921, 922 and 923) which are arranged at the upper position and the lower position, the upper plate (921) is connected with the air vibration isolation springs (91) through screws, and the side part of the lathe bed (10) is further provided with a chip cleaner (93).

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