CN101602163A - Numerical-control turn-milling machine tool - Google Patents

Abstract

The invention belongs to the machine tool technology field, be specifically related to the numerical-control turn-milling machine tool that the polygon axle of a kind of turnning and milling part, basin tooth and umbrella tooth part are used.It is characterized in that: described removable pallet arrangement comprises and can vertically do straight-line big palette and can laterally do straight-line little supporting plate composition along lathe bed along lathe bed; The straight line that big palette is positioned on the lathe bed is led on the rule, and little supporting plate is positioned at the straight line that big palette is provided with leads on the rule; Little supporting plate is provided with electronics cutter platform and milling cutter platform; The cutterhead rotating shaft of milling cutter platform is connected with the output shaft run-in synchronism of speed-changing gear box; On electronics cutter platform cutterhead, be provided with manyly, can be laid with many on the cutterhead of milling cutter platform according to the needs of the side of milling milling cutter lathe tool.Have compact conformation, manufacturing cost is lower, simple to operate, the efficient height, have the milling function concurrently, finish the processing of axial workpiece groove, side, curved surface, sphere and spiral gengon and basin tooth, umbrella tooth part tooth automatically, and manufacturing procedure realizes automation, the machining accuracy height, calibration is accurate, the advantage that production cost is low.

Description

CNC turning and milling machine

Technical field:

The invention belongs to the technical field of machine tools, and in particular relates to a numerically controlled turning and milling machine tool for turning and milling polygonal shaft parts, basin gears and bevel gear parts.

Background technique:

At present, the processing of small shaft parts, pot teeth and bevel gear parts is mostly processed by traditional turning and milling technology. When a part is a triangular, quadrangular, hexagonal and other polygonal shaft parts, it needs to be processed by multiple clamping and positioning processes. The disadvantages are complex operation, low processing efficiency, easy to form cumulative tolerances, poor precision, and high cost; Machining center processing, the storage processing center is expensive, and has the defects of indexing error, low efficiency and high processing cost.

Invention content:

The object of the present invention is to provide a numerically controlled turning and milling machine tool with simple operation, high efficiency, improved machining accuracy and low production cost.

The technical solution of the present invention is: a CNC turning and milling machine tool, which is composed of a bed, a driving motor, a gear box, a numerical control device, and a rotary hydraulic fixture for clamping workpieces controlled by the numerical control device and a movable pallet device. The input shaft of the box is connected with the rotating shaft of the drive motor through a pulley and a V-belt, and is also connected with the shaft of the rotary hydraulic fixture. The bed is composed of small pallets that move linearly in the horizontal direction; the large pallet is located on the linear guide on the bed, and the small pallet is located on the linear guide provided on the large pallet; the small pallet is equipped with an electronic knife table and Milling cutter table; the rotating shaft of the cutter head of the milling cutter table is synchronously connected with the output shaft of the gear box; there are multiple turning tools on the cutter head of the electronic tool table, and the cutter head of the milling cutter table) can be used according to the needs of milling. A plurality of milling cutters are evenly distributed.

Wherein, the linear movement of the large pallet along the longitudinal direction of the bed is realized by the servo motor mounted on the bed controlled by the numerical control device to drive the screw rod to drive the nut on the underside of the large pallet.

The linear movement of the small pallet along the lateral direction of the bed is realized by the servo motor driven screw rod installed on the large pallet controlled by the numerical control device to drive the nuts on the lower side of the small pallet.

The cutterhead rotating shaft of the milling cutter table is synchronously connected with the output shaft of the gear box. The output shaft of the gear box adopts a spline shaft, and the shaft is provided with a synchronous large gear through a synchronous toothed belt and the shaft of the cutterhead. The synchronous pinion is connected; the tensioner wheel is crimped on the side of the synchronous toothed belt, and the tensioner wheel is connected with the piston rod of the constant pressure cylinder.

Due to the adoption of the above technical scheme, the workpiece and the milling cutter rotate at the same time, the large pallet moves longitudinally along the bed, and the milling cutter table and electronic tool table on the small pallet move laterally along the bed on the large pallet. When processing the workpiece, first According to the external dimensions of the workpiece, the programming is input into the numerical control device. Under the control of the numerical control device, two servo motors are used to control the work of the electronic knife table cutter and the milling cutter on the milling table to complete the processing of the workpiece. Therefore, it has the advantages of compact structure, low manufacturing cost, simple operation, high efficiency, and milling function, which can automatically complete the processing of shaft parts grooves, square, curved surfaces, spherical surfaces and spiral polygons, basin teeth, bevel teeth, and The processing procedure is automated, the processing precision is high, the indexing is accurate, and the production cost is low.

Description of drawings:

The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the right view of Fig. 1;

Fig. 3 is a sectional view along line A-A of Fig. 1 .

Detailed ways:

Referring to Figures 1-3, a CNC turning and milling machine tool is composed of a bed 1, a drive motor, a gear box 2, a CNC device 3, and a rotary hydraulic fixture for clamping workpieces controlled by the CNC device and a movable pallet device. The input shaft of the gear box 2 is connected with the shaft of the drive motor through a pulley and a V-belt, and is also connected with the shaft of the rotary hydraulic fixture. The movable pallet device includes a large pallet 4 that can move linearly along the longitudinal The bed is composed of a small pallet 5 that moves linearly in the lateral direction; the large pallet 4 is located on the linear guide 6 on the bed, and the small pallet 5 is located on the linear guide provided on the large pallet 4; the large pallet 4 is positioned along the The longitudinal linear movement of the bed is realized by the servo motor 9 installed on the bed controlled by the numerical control device to drive the screw 10 to drive the screw nut 17 on the lower side of the large supporting plate 4; the small supporting plate 5 makes a straight line along the lateral direction of the bed The movement is realized by the servo motor 11 installed on the large pallet controlled by the numerical control device to drive the screw mandrel 12 to drive the screw nut 18 on the underside of the small pallet 5; Cutter table 8; the cutter head rotating shaft of milling cutter table 8 is synchronously connected with the output shaft of the gear box, and the synchronous operation connection between the cutter table rotating shaft of the milling table 8 and the output shaft of the gear box 2 is the output shaft of the gear box 2 Spline shaft 13 is adopted, and the shaft is provided with a synchronous bull gear to be connected with the synchronous pinion on the cutter head shaft through synchronous toothed belt 14; The constant pressure cylinder is connected with 16 piston rods; there are multiple turning tools on the 7 cutterheads of the electronic tool table, and the number of turning tools is set according to the complexity of the workpiece processing. The conical surface and the outer circle are selected from the outer circle turning tool, and the car spring groove is selected from the R turning tool, and finally cut off with a truncation knife. Three turning tools should be provided on the cutter head of the electronic knife station 7; According to the needs of milling, a plurality of milling cutters are evenly distributed. For example, two milling cutters can be evenly arranged for quadrilateral milling, and three milling cutters can be evenly arranged for hexagonal milling.

Working principle: Taking the processing shaft parts as an example, first input the programming into the numerical control device according to the external dimensions of the workpiece, fix the workpiece on the hydraulic fixture, drive the motor to drive the workpiece to rotate through the gear box, and at the same time, the output spline shaft of the gear box passes through the synchronous The gear and synchronous belt drive the milling cutter head to rotate. Under the control of the numerical control device, as the working position changes, the large pallet moves longitudinally along the bed through two servo motors, and the milling cutter table and electronic knife on the small pallet When the table moves laterally along the bed on the large pallet to the working position, the electronic tool table tool completes the processing of the workpiece in the shape of circle, cone, groove and ball, and is completed by the milling cutter on the cutter head of the milling table. Processing of polygons and bevel gears is sufficient.

Claims (4)

1, a kind of numerical-control turn-milling machine tool, form by rotating hydraulic anchor clamps and removable pallet arrangement that the clamping workpiece of lathe bed (1), drive motors, speed-changing gear box (2), numerical control device (3) and numerical control device control is used, speed-changing gear box (2) power shaft links to each other with the drive motors rotating shaft with triangular driving band by belt pulley, also link to each other with the rotating hydraulic clamp shaft, it is characterized in that: described removable pallet arrangement comprises and can vertically do straight-line big palette (4) and can laterally do straight-line little supporting plate (5) composition along lathe bed along lathe bed; The straight line that big palette (4) is positioned on the lathe bed is led on the rule (6), and little supporting plate (5) is positioned at the straight line that big palette (4) is provided with leads on the rule; Little supporting plate (5) is provided with electronics cutter platform (7) and milling cutter platform (8); The cutterhead rotating shaft of milling cutter platform (8) is connected with the output shaft run-in synchronism of speed-changing gear box; On electronics cutter platform (7) cutterhead, be provided with manyly, can be laid with many on the cutterhead of milling cutter platform (8) according to the needs of the side of milling milling cutter lathe tool.

2, by the described a kind of numerical-control turn-milling machine tool of claim 1, it is characterized in that: it is that the servomotor (9) on the lathe bed of being installed on by numerical control device control drives the screw (17) that screw mandrel (10) drives on big palette (4) downside and realizes that described big palette (4) is vertically done rectilinear motion along lathe bed.

3, by the described a kind of numerical-control turn-milling machine tool of claim 1, it is characterized in that: it is that the servomotor (11) on the big palette of being installed on by numerical control device control drives the screw (18) that screw mandrel (12) drives on little supporting plate (5) downside and realizes that described little supporting plate (5) is laterally done rectilinear motion along lathe bed.

4, by the described a kind of numerical-control turn-milling machine tool of claim 1, it is characterized in that: it is that the output shaft of speed-changing gear box (2) adopts splined shaft (13), axle to be provided with synchronous gear wheel to pass through synchronous cog belt (14) and link to each other with synchronous pinion gear in the cutterhead rotating shaft that the cutterhead rotating shaft of described milling cutter platform (8) is connected with the output shaft run-in synchronism of speed-changing gear box (2); At the side crimping expansion tightening wheel (15) of synchronous cog belt (14), expansion tightening wheel (15) links to each other with constant voltage cylinder (16) piston rod.

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