CN102029522A - Four-axis four-linkage inverted turning and milling combined machining device - Google Patents

Abstract

A four-axis four-linkage inverted turning-milling compound processing device belongs to the technical field of numerical control machine tool manufacturing. The main technical solution of the present invention is: the bed is placed horizontally, the slide plate is installed on the X guide rail of the bed, the sliding column type saddle is installed on the Y guide rail of the slide plate, and the Z guide rail at the front end of the saddle includes an inverted spindle unit and The spindle box unit of the main motor and the power turret are fixed on the lower left side of the bed. This processing device replaces the manipulator with an inverted spindle unit, and realizes the material grabbing of the inverted spindle unit and the four-axis four-linkage turning-milling compound processing. The overall structure is compact, the parts processing is highly automated and continuous, and the production efficiency is high. Operation Low labor intensity, good processing quality, especially suitable for processing various discs and sleeve parts.

Description

Four-axis four-linkage inverted turning and milling compound processing device

technical field

A four-axis four-linkage inverted turning-milling compound processing device belongs to the technical field of numerical control machine tool manufacturing. This device is oriented to the automatic processing of mechanical parts, mainly for turning and milling composite processing of discs and sleeve parts, and has the advantages of humanization, high efficiency and high precision.

Background technique

At present, although independent upright lathes and independent upright lathes have played a positive role in improving the machining accuracy and production efficiency of parts in the processing of disc and sleeve parts, but due to the upright and upright lathes and upside down The lathe adopts an independent structure design. When the blank has multiple surfaces that need to be processed or processed in a composite process, it needs to be manually adjusted or transferred to the corresponding machine tool for processing, which not only reduces the processing efficiency, but also increases the labor load of the operator. , It also reduces the degree of continuous operation, which makes it difficult to guarantee the accuracy of processed parts.

Contents of the invention

The purpose of the present invention is to solve the problems and defects of the independent upright lathe and the independent inverted lathe in the above-mentioned prior art, and to design a kind of inverted turning and milling compound based on the independent inverted turning lathe and having the combined processing function of turning and milling. The processing device can achieve the purpose of improving the automation level and continuous level of CNC machine tool production and processing, improving the production efficiency of parts processing, reducing the labor intensity of operators, ensuring the quality of product processing, and reducing the cost of parts processing.

The basic design of the present invention is: place the slide plate structure on the X-direction linear guide rail arranged in the horizontal direction of the bed, and realize the left and right high-speed movement of the slide plate driven by the servo motor; place the sliding saddle and the counterweight structure on the Y-direction linear guide rail of the slide plate , driven by the servo motor to achieve high-speed forward and backward movement; the spindle box unit including the inverted spindle unit and the main motor moves up and down along the Z-direction linear guide rail arranged in the vertical direction of the saddle; the power turret is installed on the lower left side of the bed , the axial and radial power tool holders are driven by the power turret motor to realize the tool rotation and complete the milling process; the main shaft rotates at high speed and also has the C-axis function, and cooperates with the X, Y, Z three-axis feed to complete the milling process. Four-axis four-link turning and milling compound machining.

The invention avoids the shortcomings of the independent upright lathe and the independent inverted lathe, realizes multi-process processing, grabs and puts back the processed parts, does not need repeated clamping in the whole process, and improves the processing efficiency. It reduces the labor intensity of the staff, further ensures the processing quality of the workpiece, reduces the production cost and processing cycle of the workpiece, and is especially suitable for the use of various discs, sleeves and multi-process processing parts.

Description of drawings

Fig. 1 is a schematic front view of the overall assembly structure of the present invention;

Fig. 2 is a schematic left view of the overall assembly structure of the present invention;

Description of part number in the figure:

1. Hydraulic chuck, 2. Inverted spindle unit, 3. Encoder, 4. Z-direction rail pair, 5. Rotary oil cylinder, 6. Z-direction screw pair, 7. Z-direction servo motor, 8. Headstock, 9. Inverted main motor, 10. X-direction rail pair, 11. Power turret, 12. X-direction servo motor, 13. Counterweight system sprocket mechanism, 14. Counterweight system guide rail mechanism, 15. Counterweight, 16, sliding saddle, 17, Y guide rail pair, 18, slide plate, 19, Y direction servo motor, 20, Y direction lead screw pair, 21, lathe bed.

Detailed ways

Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

The overall layout of the present invention: the device belongs to the cross-sliding column type spindle inverted turning and milling compound processing device. The bed 21 is placed horizontally, and the X-direction linear guide rail pair 10 is installed on the top guide rail surface of the bed 21 . A ball screw is used for transmission between the two linear guide rails, and the X-direction servo motor 12 is installed on the left side of the bed 21, and the ball screw is driven to rotate through a plum blossom coupling.

The slide plate 18 is installed on the X-direction linear guide rail pair 10, and the Y-direction linear guide rail pair 17 is installed on the top guide rail surface of the slide plate 18. Ball screw transmission is selected between the two linear guide rails, and the Y-direction servo motor 19 is installed on the rear side of the slide plate 18, and the ball screw is driven to rotate through the plum blossom coupling. The bottom of the slide plate 18 is connected with the screw nut seat and connected with the X-direction ball screw pair as a whole, and moves left and right along the X-direction linear guide rail at high speed under the drive of the X-direction servo motor 12 .

The column type sliding saddle 16 is installed on the Y-direction linear guide rail pair 17, and the middle cavity of the sliding saddle 16 is equipped with a counterweight 15. The counterweight system sprocket mechanism 13 is installed on the top of the saddle 16, the counterweight system guide rail mechanism 14 is installed on the left and right sides of the counterweight block 15, the Z guide rail pair 4 is installed on the front side guide rail surface of the slide saddle 16, and the Z guide rail pair 4 is installed between the two guide rails. The pair of bars 6 drives, and the Z servomotor 7 is installed on the front part of the top of the saddle 16. The bottom of the saddle 16 is connected with the screw nut seat and connected with the Y-direction ball screw pair 20 as a whole, and moves forward and backward at high speed along the Y-direction linear guide rail 17 under the drive of the Y-direction servo motor 19 .

An inverted main motor 9 is installed in the square opening on the left side of the spindle box 8, an inverted main shaft unit 2 is installed in the center hole on the right side, a rotary oil cylinder 5 is installed on the upper end of the inverted main shaft unit 2, and a hydraulic chuck 1 is installed on the lower end of the inverted main shaft unit 2. The inverted spindle unit 2 replaces the manipulator to realize taking and discharging. Encoder 3 is installed on the front side plane of main shaft box 8, synchronous pulley is installed on encoder 3 and inverted main shaft unit 2, inverted main shaft unit 2 and main motor 9, transmits motion by efficient synchronous belt. The rear plane of the main shaft box 8 is connected with the screw nut seat and connected with the ball screw as a whole, and moves up and down along the Z-direction linear guide rail under the drive of the Z-direction servo motor 7 .

The power tool turret 10 is installed on the lower left side of the bed 21, and the power tool holder is driven by the DC motor of the power turret. The tool rotates to make the workpiece move relative to the tool, and milling is performed on the end face and the arc surface of the workpiece.

When processing the workpiece, the worker places the workpiece blank at the loading position, and rotates the top tray to lock the workpiece. After being transported to the loading position, the travel switch of the loading mechanism feeds back the signal to the system, and the system stops the motor and reducer of the loading mechanism. And at the same time send instructions to the X-direction servo motor 12 to drive the ball screw to drive the slide plate 18 to move to the right, and the slide plate 18 drives the saddle 16 and the spindle box 8 to move together. After arriving at the designated feeding position, issue a command to the Y-direction servo motor 19, drive the Y-direction ball screw 20 to drive the saddle 16 to move back and forth, find the position of feeding and at the same time send a command to the Z-direction servo motor 7 to drive the Z-direction ball The lead screw 6 drives the headstock 8 to move downwards. During this process, the claws of the hydraulic chuck 1 are opened, aligned with the loading tray mechanism, and the workpiece is pressed and closed. The chuck 1 grabs the workpiece and grabs the material to the power turret. 10, and then perform turning, milling, drilling, boring or combined turning and milling according to the pre-programmed processing program instructions. After the processing is completed, the inverted spindle unit 2 returns to the feeding position along the X direction with the processed parts, and the hydraulic chuck 1 is released to put down the processed workpieces. Then send an instruction to the motor of the feeding mechanism to move the workpiece blank of the next station clockwise to the feeding position, and repeat the previous process to complete the processing of the next workpiece. At the unloading position, the processed workpiece is manually assisted to remove, and a new workpiece blank is placed for the next batch of processing. So far, the present invention completes all processing steps.

Claims (5)

1. A four-axis four-linkage inverted turn-milling compound processing device, including X-direction, Y-direction, Z-direction feed and C-axis rotation, characterized in that: the slide plate (18) realizes the X-direction on the bed (21) Move left and right; the saddle (16) realizes Y forward and backward movement on the slide plate (18); the front end of the saddle (16) is equipped with a spindle motor (9) and an inverted spindle unit that moves up and down along Z (2) the spindle box (8); the power turret (11) is fixed on the lower left side of the bed (21); the automatic feeding mechanism is installed on the right front side of the bed (21) as an independent feeding unit; finally Realize X-axis, Y-axis, Z-axis and C-axis four-axis four-link turning-milling compound machining. 2. The four-axis four-linkage inverted turning-milling compound processing device according to claim 1, characterized in that: the top of the bed (21) is processed with a guide rail surface, and X-direction linear guide rails (10) parallel to each other are installed, and slide plates (18 ) is installed on the linear guide rail slider, and is connected and matched with the X-direction screw unit through the screw nut seat, and moves left and right along the X-direction linear guide rail (10) under the drive of the X-direction servo motor (12). 3. The four-axis four-linkage inverted turning-milling compound processing device according to claim 1, characterized in that: the top of the slide plate (18) is processed on the guide rail surface, and the Y-direction linear guide rail pair (17) parallel to each other is installed, and the sliding saddle ( 16) Installed on the linear guide rail slider, and connected with the Y-direction screw unit (20) through the nut seat, and moved back and forth along the Y-direction linear guide pair (17) under the drive of the Y-direction servo motor (19). 4. The four-axis four-linkage inverted turning-milling compound processing device according to claim 1, characterized in that: the inverted spindle unit (2) is installed in the center hole on the right side of the spindle box (8), and the spindle motor (9) Installed in the square opening of the spindle box (8) on the left side of the inverted spindle unit (2), the inverted spindle unit (2) and the spindle motor (9) transmit motion through the synchronous belt, and the inverted spindle unit (2) 1. The main motor (9) and the spindle box (8) are assembled into one body; the Z-direction linear guide rail pair (4) parallel to each other is installed on the front guide rail processing surface of the sliding saddle (16), and the spindle box (8) is installed on the linear guide rail slider and cooperate with the Z-direction lead screw unit (6) through the screw nut seat, and move up and down along the Z-direction linear guide pair (4) under the drive of the Z-direction servo motor (7). 5. The four-axis four-linkage inverted turning-milling compound processing device according to claim 1, characterized in that: the processing device adopts large-lead ball screws in the three directions of X-axis, Y-axis and Z-axis to realize high-speed cutting. The upper end of the inverted spindle unit (2) is equipped with a rotary oil cylinder (5), and the lower end is equipped with a hydraulic chuck (1). The hydraulic chuck (1) holds the workpiece and rotates 360° around the Z axis to become the C axis. When performing simple turning processing, this device is used as a general inverted lathe; when the workpiece has complex curved surfaces that need to be milled, the driven tool holder of the powered turret drives the tool to rotate, and cooperates with X, Y, Z three directions of feed and C The small angle deflection of the axis completes complex surface processing.

Images