Precise five-axis machining equipment

Abstract

The utility model discloses precise five-axis machining equipment which comprises a base steel frame, a beam steel frame arranged on the base steel frame, a first lead screw direct-drive mechanism arranged on the base steel frame and a rotating mechanism connected with the first lead screw direct-drive mechanism. A second screw rod direct-drive mechanism and a power electric shaft connected with the second screw rod direct-drive mechanism are arranged on the cross beam steel frame; the five-axis machining equipment is small in temperature change amplitude in the machining process, a lead screw direct drive machining mode is adopted, and the machining precision is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing, and in particular relates to a precision five-axis processing device. Background Art

[0002] With the high-quality development of China's manufacturing industry, five-axis linkage processing equipment has a significant impact on the aviation, aerospace, military, scientific research, precision machinery, high-precision medical equipment and other industries. It is the only means to solve the processing of impellers, blades, marine propellers, heavy generator rotors, turbine rotors, large diesel engine crankshafts, etc. Therefore, the demand for five-axis processing equipment is also increasing.

[0003] The five-axis linkage processing equipment is a high-tech processing center specially used for processing complex curved surfaces. The five-axis processing center has five axes: X, Y, Z, A, and C. The XYZ and AC axes form five-axis linkage processing. It is good at spatial curved surface processing, special-shaped processing, hollow processing, punching, oblique holes, bevel cutting, etc., and has the characteristics of high efficiency.

[0004] The driving method used by the economical five-axis machining equipment on the market now makes it difficult to achieve the processing of precision parts, resulting in a low yield rate and increased production costs. In addition, because the body of the machine is generally made of cast iron or marble, the cast iron body will affect the accuracy of the equipment under large temperature differences, and the marble body has poor impact resistance to the equipment, which will also affect the accuracy of the equipment. Utility Model Content

[0005] The utility model aims to provide a precision five-axis machining device in view of the technical problems existing in the background technology.

[0006] According to a precision five-axis machining equipment provided by the utility model, it includes a base steel frame and a crossbeam steel frame arranged on the base steel frame, the base steel frame is provided with a first screw direct drive mechanism and a rotating mechanism connected to the first screw direct drive mechanism, and the crossbeam steel frame is provided with a second screw direct drive mechanism and a power electric shaft connected to the second screw direct drive mechanism.

[0007] Preferably, it also includes a control console, which is electrically connected to the first screw direct drive mechanism, the rotating mechanism, the second screw direct drive mechanism and the power electric shaft.

[0008] Preferably, the first screw direct drive mechanism includes a first direct drive unit in the Y direction, the rotation mechanism includes a first rotation unit in the C direction and a second rotation unit in the A direction, the first rotation unit is arranged on the first direct drive unit, the second rotation unit is arranged on the first rotation unit and the rotation direction of the second rotation unit is perpendicular to the rotation direction of the first rotation unit.

[0009] Preferably, the second screw direct drive mechanism includes a second direct drive unit in the X direction and a third direct drive unit in the Z direction, the second direct drive unit is arranged on the crossbeam steel frame, the third direct drive unit is arranged on the second direct drive unit and is perpendicular to the second direct drive unit, and the power electric shaft is arranged at the bottom of the third direct drive unit.

[0010] Preferably, the first direct drive unit, the second direct drive unit and the third direct drive unit have the same structure and all include a motor and an encoder. The output end of the motor is connected to a screw rod, and the encoder is located outside the screw rod. The outside of the screw rod is connected to a connecting slide, and a linear guide rail is provided at the bottom of the connecting slide. The connecting slide moves along the linear guide rail, and a position encoder is fixed to the outside of the linear guide rail.

[0011] Preferably, a fuselage constant temperature oil cooling chassis is fixed on the top of the crossbeam steel frame, the fuselage constant temperature oil cooling chassis covers the second screw direct drive mechanism, and a crossbeam oil cooling constant temperature bracket cavity is fixed at one end of the base steel frame.

[0012] The beneficial effects of the utility model are:

[0013] 1. By setting a first screw direct drive mechanism and a second screw direct drive structure with the same structure on the processing equipment, the processing equipment is provided with a first direct drive unit in the Y direction, a second direct drive unit in the X direction, and a third direct drive unit in the Z direction. At the same time, a first rotation unit in the C direction is set on the first direct drive unit, and a second rotation unit in the A direction is set on the first rotation unit, so that the workpiece to be processed can not only adjust any direction on the first rotation unit and the second rotation unit, but also reciprocate back and forth on the base steel beam, and also enable the power electric shaft to reciprocate horizontally and up and down on the crossbeam steel frame. Because the first direct drive unit, the second direct drive unit, and the third direct drive unit all adopt the screw direct drive driving mode, the force of the motor can directly drive the screw to move, reducing the loss of force transmitted between the motor and the screw, so that the movement accuracy of the equipment can be improved to meet the processing movement requirements of the precision five-axis processing equipment;

[0014] 2. Set up the constant temperature oil-cooled chassis of the fuselage and the constant temperature oil-cooled bracket cavity of the beam to minimize the temperature change during the processing, ensure the mechanical accuracy of the equipment, and ensure the processing accuracy requirements of the equipment;

[0015] 3. Set the position encoder and encoder, and the linear motion feedback is a dual encoder to improve the position and motion stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A structural schematic diagram of a precision five-axis machining device provided by the utility model;

[0017] Figure 2 for Figure 1A rear view structural diagram of a processing device in an embodiment;

[0018] Figure 3 for Figure 1 A schematic diagram of the enlarged structure of the third direct drive unit of the processing equipment in the embodiment;

[0019] The component numbers and names in each figure are uniformly described as follows: 1-base steel beam, 2-crossbeam steel frame, 3-second direct drive unit, 4-first direct drive unit, 5-third direct drive unit, 6-first rotation unit, 7-second rotation unit, 8-power electric shaft, 9-motor, 10-encoder, 11-screw, 12-connecting slide, 13-linear guide, 14-position encoder, 21-body constant temperature oil-cooled chassis, 22-crossbeam oil-cooled constant temperature bracket cavity, 23-control console. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0021] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or a specific connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0023] The specific embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0024] like Figure 1-Figure 3As shown, a precision five-axis machining equipment proposed by the utility model includes a base steel frame 1 and a beam steel frame 2 arranged on the base steel frame 1, the base steel frame 1 is provided with a first screw direct drive mechanism and a rotating mechanism connected to the first screw direct drive mechanism, the beam steel frame 2 is provided with a second screw direct drive mechanism and a power electric shaft 8 connected to the second screw direct drive mechanism, the workpiece to be processed is placed on the rotating mechanism, the orientation of the workpiece to be processed is changed by the rotating mechanism, and then the power electric shaft 8 on the second screw direct drive mechanism and the rotating mechanism on the first screw direct drive mechanism are made to approach and move away from each other through the first screw direct drive mechanism and the second screw direct drive mechanism, so that all surfaces of the workpiece to be processed placed on the rotating mechanism can be finely trimmed by the power electric shaft 8.

[0025] In one embodiment, in order to better control the start and stop of the first screw direct drive mechanism, the rotating mechanism, the second screw direct drive mechanism and the power electric shaft 8, the precision five-axis machining equipment also includes a control console 23, and the control console 23 is electrically connected to the first screw direct drive mechanism, the rotating mechanism, the second screw direct drive mechanism and the power electric shaft 8.

[0026] In one embodiment, the first screw direct drive mechanism includes a first direct drive unit 4 in the Y direction, the rotation mechanism includes a first rotation unit 6 in the C direction and a second rotation unit 7 in the A direction, the first rotation unit 6 is arranged on the first direct drive unit 4, the second rotation unit 7 is arranged on the first rotation unit 6 and the rotation direction of the second rotation unit 7 is perpendicular to the rotation direction of the first rotation unit 6.

[0027] In one embodiment, the second screw direct drive mechanism includes a second direct drive unit 3 in the X direction and a third direct drive unit 5 in the Z direction, the second direct drive unit 3 is arranged on the crossbeam steel frame 2, the third direct drive unit 5 is arranged on the second direct drive unit 3 and is perpendicular to the second direct drive unit 3, and the power electric shaft 8 is arranged at the bottom of the third direct drive unit 5.

[0028] It should be noted that both the first rotating unit 6 and the second rotating unit 7 are operated by conventional motors.

[0029] As an implementation mode, the direct drive unit structures in the Y direction, X direction, and Z direction are the same, and the direct drive unit includes a motor 9 and an encoder 10. The output end of the motor 9 is connected to a screw rod 11, and the encoder 10 is located outside the screw rod 11. The screw rod 11 is connected to the outside of a connecting slide 12, and a linear guide rail 13 is provided at the bottom of the connecting slide 12. The connecting slide 121 moves along the linear guide rail 13, and a position encoder 14 is fixed to the outside of the linear guide rail 13.

[0030] It should be noted that when the motor 9 directly drives the screw 11 to rotate, the rotation of the screw 11 can drive the connecting slide 12 connected thereto to move. At the same time, the encoder 10 is connected to the control console 23 to obtain the screw direct drive information in real time, and the position encoder 14 is used to measure the position and movement state of the connecting slide 12 in real time.

[0031] In one embodiment, in order to keep the temperature of the processing equipment from being too high during operation, a body constant temperature oil cooling chassis 21 is fixed on the top of the crossbeam steel frame 2, and the body constant temperature oil cooling chassis 21 covers the second screw direct drive mechanism. A crossbeam oil cooling constant temperature bracket cavity 22 is fixed at one end of the base steel frame 1.

[0032] The above is a precision five-axis machining equipment or multiple implementation methods provided in combination with specific content, and it is not considered that the specific implementation of the utility model is limited to these descriptions. Any method, structure, etc. similar to or identical to the utility model, or a number of technical deductions or replacements based on the concept of the utility model, should be regarded as the protection scope of the utility model.

Claims

1. A precision five-axis machining equipment, characterized in that: include: A base steel frame (1), and a crossbeam steel frame (2) arranged on the base steel frame (1), wherein the base steel frame (1) is provided with a first screw direct drive mechanism and a rotating mechanism connected to the first screw direct drive mechanism, and the crossbeam steel frame (2) is provided with a second screw direct drive mechanism and a power electric shaft (8) connected to the second screw direct drive mechanism, a fuselage constant temperature oil cooling case (21) is fixed on the top of the crossbeam steel frame (2), and the fuselage constant temperature oil cooling case (21) covers the second screw direct drive mechanism, and a crossbeam oil cooling constant temperature bracket cavity (22) is fixed at one end of the base steel frame (1); The first screw direct drive mechanism comprises a first direct drive unit (4) in the Y direction, the rotation mechanism comprises a first rotation unit (6) in the C direction and a second rotation unit (7) in the A direction, the first rotation unit (6) is arranged on the first direct drive unit (4), the second rotation unit (7) is arranged on the first rotation unit (6), and the rotation direction of the second rotation unit (7) is perpendicular to the rotation direction of the first rotation unit (6); The second screw direct drive mechanism comprises a second direct drive unit (3) in the X direction and a third direct drive unit (5) in the Z direction, wherein the second direct drive unit (3) is arranged on the crossbeam steel frame (2), the third direct drive unit (5) is arranged on the second direct drive unit (3) and is perpendicular to the second direct drive unit (3), and the power electric shaft (8) is arranged at the bottom of the third direct drive unit (5).

2. The precision five-axis machining equipment according to claim 1, characterized in that: The precision five-axis machining equipment further comprises a control console (23), wherein the control console (23) is electrically connected to the first screw direct drive mechanism, the rotating mechanism, the second screw direct drive mechanism and the power electric shaft (8).

3. The precision five-axis machining equipment according to claim 1, characterized in that: The first direct drive unit (4), the second direct drive unit (3), and the third direct drive unit (5) are all of the same structure, and all include a motor (9) and an encoder (10); the output end of the motor (9) is connected to a lead screw (11); the encoder (10) is located outside the lead screw (11); the lead screw (11) is externally connected to a connecting slide (12); a linear guide rail (13) is provided at the bottom of the connecting slide (12); the connecting slide (12) moves along the linear guide rail (13); and a position encoder (14) is fixed to the outside of the linear guide rail (13).

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