CN115741117A - Direct-drive, high-speed and high-precision turning and grinding integrated machine tool - Google Patents

Abstract

The invention discloses a direct-drive, high-speed and high-precision turning and grinding integrated machine tool which comprises a machine tool body, a positive main shaft box, a positive main shaft, a first linear driving mechanism, a dragging plate, a sliding plate, a power tool rest, a second linear driving mechanism, an auxiliary main shaft box, an auxiliary main shaft and a third linear driving mechanism. The linear motor is directly driven, the speed is high, the acceleration is high, the dynamic response is fast, and the precision and the efficiency are effectively improved; the linear motor is matched with a grating ruler to form a closed-loop system, so that the positioning precision and the repeated positioning precision are improved. The invention can finish the integrated processing of turning and grinding by one-time clamping, reduces the error caused by multiple times of clamping and improves the precision. The invention adopts the butt joint of the double main shafts, realizes the automatic turning processing, and can complete the integral processing of all lathing and grinding, thereby greatly shortening the manufacturing process chain of products, reducing the production auxiliary time caused by multiple clamping, reducing the manufacturing period and waiting time of tool fixtures, and obviously improving the processing efficiency.

Description

A direct-drive, high-speed, high-precision turning-grinding integrated machine tool

technical field

The invention belongs to the field of numerically controlled machine tools, and is particularly suitable for the processing of shaft and disk sleeve parts such as auto parts, medical equipment, aerospace, molds, etc., and specifically relates to a direct-drive, high-speed, high-precision turning-grinding integrated machine tool.

Background technique

The current turning and grinding integrated machine tools are all driven by servo motors and ball screws, with low speed and slow dynamic response. The invention relates to a direct-drive, high-speed, high-precision turning-grinding integrated machine tool, aiming at providing a highly modularized, high-acceleration, high-speed, numerically controlled composite processing machine tool capable of realizing turning and grinding.

The present invention adopts the structure of opposite double spindles, double spindles and single power turret; the inclined bed has good rigidity and is convenient for chip removal; driven by a linear motor, it can realize high speed and high acceleration; the double spindles are docked, and the workpiece can be turned around for processing. Composite processing such as turning and grinding of the entire workpiece can be completed on this equipment.

Contents of the invention

Purpose of the invention: In order to solve the deficiencies of the prior art, the present invention provides a direct-drive, high-speed, high-precision turning-grinding integrated machine tool, driven by a linear motor, high speed, high acceleration, and fast dynamic response; one clamping can complete the workpiece Turning and grinding at one end, double-spindle docking, can complete the turning and grinding at the other end; one device can replace multiple devices, reducing the floor space; reducing the number of clamping times, improving the accuracy of the workpiece; reducing the process chain, improving efficiency.

Technical solution: a direct-drive, high-speed, high-precision turning-grinding integrated machine tool, including a bed, a positive spindle box, a positive spindle, a first linear drive mechanism, a carriage, a slide plate, a power tool post, and a second linear drive mechanism , sub-spindle box, sub-spindle and third linear drive mechanism;

The bed is fastened on the infrastructure, and the bed is provided with a positive spindle system, a processing unit and a sub-spindle system for clamping workpieces;

The positive spindle box of the positive spindle system is installed on the bed, the positive spindle is installed on the positive spindle box, and a power chuck is installed on the spindle for clamping the workpiece;

Between the Z-axis carriage of the processing unit and the bed, there is a first linear guide rail that slides with the Z-axis carriage and is used to drive the Z-axis carriage on the first straight line. The first linear drive mechanism reciprocating on the guide rail;

Between the slide plate and the Z-axis drag plate, there is a second linear guide rail slidingly matched with the slide plate and a second linear drive mechanism for driving the column to reciprocate on the second linear guide rail;

The power tool holder is installed on the slide plate, and is used for processing the clamped parts of the main and sub-spindle systems;

The sub-spindle box in the sub-spindle system and the bed are provided with a third linear guide that slides with the sub-spindle box and is used to drive the sub-spindle box on the third linear guide A third linear drive mechanism for reciprocating motion;

The sub-spindle of the sub-spindle system is installed on the sub-spindle box, and a power chuck is installed on the main shaft for clamping workpieces.

Further, the movement track of the first linear guide rail is parallel to the rotation axis of the left main shaft assembly.

Further, the movement track of the second linear guide rail is perpendicular to the rotation axis of the right spindle assembly.

Further, the third linear guide rail is parallel to the rotation axis of the positive spindle assembly. The axes of the two spindles coincide.

Further, the positive spindle system is an electric spindle.

Further, the sub-spindle system is an electric spindle.

Beneficial effect: the concrete advantage of the present invention is as follows:

(1) The linear motor of the present invention is directly driven, has high speed, large acceleration, fast dynamic response, and effectively improves precision and efficiency.

(2) The linear motor of the present invention is matched with a grating ruler to form a closed-loop system, which improves the positioning accuracy and repeat positioning accuracy.

(3) The present invention can complete the machining of turning and grinding in one clamping, which reduces the error caused by multiple clampings and improves the precision.

(4) The present invention adopts double-spindle docking to realize automatic U-turn processing, and can complete the integrated processing of all turning and grinding, thereby greatly shortening the product manufacturing process chain, reducing the production auxiliary time caused by multiple clamping, and reducing tooling Fixture manufacturing cycle and waiting time can significantly improve processing efficiency.

(5) The present invention can effectively reduce the investment in overall fixed assets, the cost of production operation and management due to the shortening of the manufacturing process chain and the reduction of equipment required for the product, as well as the reduction of the number of fixtures, workshop floor space and equipment maintenance costs .

(6) The present invention adopts a high-rigidity, high-strength inclined bed layout, which is convenient for cutting and chip removal.

Description of drawings

Fig. 1 is the front view of the overall structure of the direct-drive, high-speed, high-precision turning-grinding machine tool of the present invention;

Fig. 2 is the plan view of direct-drive, high-speed, high-precision turning-grinding integrated machine tool of the present invention;

In the figure: 1. Bed; 2. Positive spindle box; 3. Positive spindle; 4. The first linear drive mechanism; ; 9. Sub-spindle box; 10. Sub-spindle; 11. The third linear drive mechanism;

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention, so that those skilled in the art can better understand the advantages and features of the present invention, so as to define the protection scope of the present invention more clearly. The embodiments described in the present invention are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without creative work For example, all belong to the protection scope of the present invention.

Example

As shown in Figure 1, the present invention discloses a direct-drive, high-speed, high-precision turning-grinding integrated machine tool, including a bed 1, a positive spindle box 2, a positive spindle 3, a first linear drive mechanism 4, and a carriage 5 , slide plate 6, power tool holder 7, second linear drive mechanism 8, sub-spindle box 9, sub-spindle 10 and the third linear drive mechanism 11.

The bed 1 is fastened on the infrastructure, and the bed 1 is provided with a main spindle system, a processing unit and a sub-spindle system for clamping workpieces.

The positive spindle box 2 of the positive spindle system is installed on the bed 1, the positive spindle 3 is installed on the positive spindle box 4, and a power chuck is installed on the spindle for clamping workpieces. The positive spindle system is an electric spindle.

Between the Z-axis carriage 5 of the processing unit and the bed 1, there is a first linear guide rail that slides with the Z-axis carriage 5 and is used to drive the Z-axis carriage 5 in the The first linear drive mechanism 4 reciprocating on the first linear guide rail. The motion trajectory of the first linear guide rail is parallel to the rotation axis of the left main shaft assembly.

Between the slide plate 6 and the Z-axis drag plate 5, there is a second linear guide rail that slides with the slide plate 6 and a second straight line for driving the column 6 to reciprocate on the second linear guide rail. Drive mechanism 8. The motion trajectory of the second linear guide rail is perpendicular to the rotation axis of the right main shaft assembly.

The power tool holder 7 is installed on the slide plate 6, and is used for machining parts clamped by the main and sub-spindle systems.

Between the sub-spindle box 9 in the sub-spindle system and the bed 1, a third linear guide rail slidingly fitted with the sub-spindle box 9 and used to drive the sub-spindle box 9 on the first A third linear drive mechanism 11 reciprocating on three linear guide rails. The third linear guide rail is parallel to the rotation axis of the positive spindle assembly. The axes of the two spindles coincide.

The sub-spindle 10 of the sub-spindle system is installed on the sub-spindle box 9, and a power chuck is installed on the main shaft for clamping workpieces. The sub-spindle system is an electric spindle.

A direct-drive, high-speed, high-precision turning-grinding integrated machine tool of the present invention is driven by a linear motor, has high speed, high acceleration, and fast dynamic response; one-time clamping can complete the turning and grinding processing of one end of the workpiece, and the double-spindle docking can be realized. Complete the turning and grinding process at the other end; one device can replace multiple devices, reducing the floor space; reducing the number of clamping times, improving the precision of the workpiece; reducing the process chain and improving efficiency.

Claims (6)

1. A direct-drive, high-speed, high-precision turning-grinding integrated machine tool, characterized in that it includes a bed (1), a positive spindle box (2), a positive spindle (3), and a first linear drive mechanism (4) , carriage (5), slide plate (6), power tool holder (7), second linear drive mechanism (8), sub-spindle box (9), sub-spindle (10) and third linear drive mechanism (11); The bed (1) is fastened on the infrastructure, and the bed (1) is provided with a positive spindle system, a processing unit and a sub-spindle system for clamping workpieces; The positive spindle box (2) of the positive spindle system is installed on the bed (1), the positive spindle (3) is installed on the positive spindle box (4), and a power chuck is installed on the spindle for clamping workpieces; Between the Z-axis carriage (5) of the processing unit and the bed (1), there is a first linear guide that slides with the Z-axis carriage (5) and is used to drive the Z-axis The first linear drive mechanism (4) that the carriage (5) reciprocates on the first linear guide rail; A second linear guide rail that slides with the slider (6) and is used to drive the column (6) on the second straight line is provided between the slider (6) and the Z-axis carriage (5). A second linear drive mechanism (8) reciprocating on the guide rail; The power tool holder (7) is installed on the slide plate (6) and is used for processing the clamping parts of the main and sub-spindle systems; Between the sub-spindle box (9) and the bed (1) in the sub-spindle system, a third linear guide rail slidingly fitted with the sub-spindle box (9) and used to drive the sub-spindle A third linear drive mechanism (11) for reciprocating movement of the box (9) on the third linear guide rail; The sub-spindle (10) of the sub-spindle system is installed on the sub-spindle box (9), and a power chuck is installed on the main shaft for clamping workpieces. 2. The direct-drive, high-speed, high-precision integrated turning and grinding machine tool according to claim 1, characterized in that: the motion track of the first linear guide rail is parallel to the rotation axis of the left spindle assembly. 3. The direct-drive, high-speed, high-precision turning-milling machine tool according to claim 1, characterized in that: the motion track of the second linear guide rail is perpendicular to the rotation axis of the right spindle assembly. 4. The direct-drive, high-speed, high-precision turning-grinding integrated machine tool according to claim 1, wherein the third linear guide rail is parallel to the rotation axis of the positive spindle assembly. The axes of the two spindles coincide. 5. The direct-drive, high-speed, high-precision integrated turning and grinding machine tool according to claim 1, characterized in that: the positive spindle system is an electric spindle. 6. The direct-drive, high-speed, high-precision turning-milling machine tool according to claim 1, characterized in that: the sub-spindle system is an electric spindle.

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