CN103008742A - Numerical control screw milling machine - Google Patents

Abstract

The present invention relates to a numerically controlled screw milling machine, comprising a base, on which an inclined bed base is arranged, and a second parallel guide rail and a slide rail are arranged on the inclined surface of the inclined bed base; Workbench, the second workbench is installed on the second guide rail, the first guide rail is arranged on the second workbench, the first guide rail is perpendicular to the second guide rail, and the first guide rail is installed on the first guide rail to slide along it The first workbench, the end milling head is installed on the first workbench, and the end milling head adopts a spherical milling cutter; the tailstock is installed on the slide rail of the inclined bed base, which is located at one end of the inclined bed base and also A workpiece spindle is installed, and a workpiece is installed between the workpiece spindle and the tailstock through a positioning piece. The invention has simple structure and reliable performance, is driven by an inclined bed and an electric spindle, has high rigidity, good stability, facilitates chip removal, is suitable for high-speed machining, and can meet the machining requirements of various thread curves on workpieces.

Description

A CNC screw milling machine

technical field

The invention relates to the technical field of numerical control milling machines, in particular to a numerical control screw milling machine with an inclined bed.

Background technique

Screw milling machines are widely used in screw processing and production. The screw milling machine in the prior art is usually transformed into a lathe or a vertical milling machine. For example, the invention patent 20101053359.0 discloses a "a numerical control screw milling machine", as shown in Figure 1, including a workbench 20 and a column 30 fixed on the bed 10, and the top of the column 30 facing the workbench 20 is set There is an end milling head 40 , and the end milling head 40 is in rotation fit with the top of the column 30 , and the end milling head 40 is in rotation fit with the column 30 through the connecting flange 50 . The bed 10 adopts a flat bed. This screw milling machine has poor rigidity, low milling speed and processing efficiency, and is not conducive to chip removal. The structure of the machine tool is also relatively complicated and the cost is high.

Contents of the invention

Aiming at the disadvantages of poor rigidity and low work efficiency of the screw milling machine in the above-mentioned existing production technology, the applicant provides another CNC screw milling machine, which adopts an inclined bed and electric spindle drive, which improves rigidity, good stability and high work efficiency .

The technical scheme adopted in the present invention is as follows:

A numerical control screw milling machine, comprising a base, the base is provided with an inclined bed base, and the inclined surface of the inclined bed base is provided with parallel second guide rails and slide rails; it also includes a second workbench, The second workbench is installed on the second guide rail, and the first guide rail is arranged on the second workbench. The first guide rail is perpendicular to the second guide rail, and the first workbench sliding along it is installed on the first guide rail. An end milling head is installed on the first workbench, and the end milling head adopts a spherical milling cutter; a tailstock is installed on the slide rail of the inclined bed base, and a workpiece is installed at one end of the inclined bed base The main shaft, the workpiece is installed between the workpiece main shaft and the tailstock through a positioning piece.

Its further technical scheme is:

There is a dovetail groove at the bottom of the tailstock, and the dovetail groove is matched with the slide rail;

The first workbench is driven by a motor and a screw mechanism;

The second workbench is driven by a motor and a screw mechanism;

The rotation axis of the end milling head is parallel to the planes of the first worktable and the second worktable respectively, and intersects the rotation axis of the workpiece;

The end milling head is driven by an electric spindle;

The workpiece spindle is driven by an electric spindle.

The beneficial effects of the present invention are as follows:

The invention has simple structure and reliable performance, is driven by an inclined bed and an electric spindle, has high rigidity, good stability, facilitates chip removal, is suitable for high-speed machining, and can meet the machining requirements of various thread curves on workpieces.

Description of drawings

Fig. 1 is a structural schematic diagram of a CNC screw milling machine in the prior art.

Fig. 2 is a structural schematic diagram of the present invention.

Fig. 3 is a schematic structural view of the present invention when the outer cover of the machine tool is omitted.

Among them: 1. Machine tool shell; 2. Three-jaw chuck; 3. Workpiece; 4. End milling head; 5. The first workbench; 6. The first guide rail; 7. Tailstock; 8. The second guide rail; 9 , Dovetail groove; 10, slide rail; 11, base; 12, second workbench; 13, workpiece spindle; 14, inclined bed base.

Detailed ways

The specific implementation manner of the present invention will be described below in conjunction with the accompanying drawings.

As shown in Figures 2 and 3, the CNC screw milling machine of this embodiment includes a base 11 on which an inclined bed base 14 is arranged, and a second parallel guide rail is arranged on the inclined surface of the inclined bed base 14 8 and slide rail 10; also includes a second table 12, the second table 12 is installed on the second guide rail 8, the second table 12 slides along the second guide rail 8 (as shown in the direction of arrow A-B in Figure 3), the second The first guide rail 6 is arranged on the workbench 12, the first guide rail 6 is perpendicular to the second guide rail 8, and the first workbench 5 sliding along it is installed on the first guide rail 6, and the first workbench 5 is along the first guide rail 6 Sliding (in the direction of arrow C-D in Figure 3), the end milling head 4 is installed on the first workbench 5, and the end milling head 4 adopts a spherical milling cutter; the tailstock 7 is installed on the slide rail 10 of the inclined bed base 14, and the tailstock 7 There is a dovetail groove 9 on the bottom, and the dovetail groove 9 is connected with the slide rail 10, and the tailstock 7 can slide along the slide rail 10 (as shown in the direction of arrow A-B in Figure 3); the workpiece spindle 13 is also installed at the end of the inclined bed base 14 , The workpiece 3 is installed between the workpiece spindle 13 and the tailstock 7 through the three-jaw chuck 2, and the machine tool housing cover 1 is installed on the base 11.

The first workbench 5 is driven by a motor and a screw mechanism, and the second workbench 12 is driven by a motor and a screw mechanism.

The rotation axis of the end milling head 4 is parallel to the planes of the first worktable 5 and the second worktable 12 respectively, and intersects the rotation axis of the workpiece 3 .

Both the end milling head 4 and the workpiece spindle 13 are driven by an electric spindle.

In actual use, the second workbench 12 slides along the second guide rail 8 to confirm the initial working position of the second workbench 12, and the first workbench 5 slides along the first guide rail 6 on the second workbench 12 to determine The initial working position of the end milling head 4 on the first workbench 5, and then install the workpiece 3, the workpiece 3 is clamped by the three-jaw chuck 2, and the tailstock 7 withstands the workpiece 3 to strengthen the rigidity and improve the machining accuracy by controlling the workpiece spindle 13 rotation, the feed of the first worktable 5 and the second worktable 12, and use the end milling head 4 of the ball end mill to process various thread curves on the workpiece 3.

The invention has reasonable structure, convenient installation, good stability and low cost.

The above description is an explanation of the present invention, not a limitation of the invention. For the limited scope of the present invention, please refer to the claims. Within the protection scope of the present invention, any form of modification can be made. the

Claims (7)

1. A CNC screw milling machine, comprising a base (11), characterized in that: the base (11) is provided with an inclined bed base (14), and the inclined surface of the inclined bed base (14) Parallel second guide rails (8) and slide rails (10) are provided; a second workbench (12) is also included, and the second workbench (12) is installed on the second guide rails (8), and the second The first guide rail (6) is arranged on the workbench (12), and the first guide rail (6) is perpendicular to the second guide rail (8), and the first worktable ( 5), the end milling head (4) is installed on the first workbench (5), and the end milling head (4) adopts a spherical milling cutter; the slide rail (10) of the inclined bed base (14) The tailstock (7) is installed on the top, and the workpiece spindle (13) is also installed at one end of the inclined bed base (14). The workpiece (3) is installed between the workpiece spindle (13) and the tailstock (7) through a positioning piece . 2. A CNC screw milling machine according to claim 1, characterized in that: the bottom of the tailstock (7) has a dovetail groove (9), and the dovetail groove (9) is connected with the slide rail (10) . 3. A CNC screw milling machine according to claim 1, characterized in that: the first workbench (5) is driven by a motor and a screw mechanism. 4. A CNC screw milling machine according to claim 1, characterized in that: the second workbench (12) is driven by a motor and a screw mechanism. 5. A CNC screw milling machine according to claim 1, characterized in that: the rotation axes of the end milling head (4) are respectively parallel to the planes of the first worktable (5) and the second worktable (12) , and intersects the axis of rotation of the workpiece (3). 6. A CNC screw milling machine according to claim 1, characterized in that: the end milling head (4) is driven by an electric spindle. 7. A CNC screw milling machine according to claim 1, characterized in that: the workpiece spindle (13) is driven by an electric spindle.

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