Slider Driving Mechanism on a CNC Assembly Machine for Assembled Camshaft

Abstract

The present invention relates to a slider driving mechanism on a CNC assembly machine for assembled camshaft. The mechanism includes a servo motor (1), the host frame (5), ball screw (6), linear guides (9) and the slider body (8), wherein, the servo motor (1), ball screw (6) and linear guides (9) are mounted vertically on the host frame (5). The servo motor (1) connects with the ball screw. The slider body (8) connects with both the ball screw (6) and the linear guides (9). It is driven by a ball screw (6) and moves along a linear guides (9) in the vertical direction. The present invention is novel. It not only can greatly improve the assembly speed of cam, hexahedron on assembled camshaft and improve productivity, but also can eliminate complex gear system. It makes the manufacturing and processing more simple. The installation is also more convenient. It can further improve product quality and manufacturing precision of assembled camshaft.

Claims

1. A slider driving mechanism on a CNC assembly machine for assembled camshaft, wherein: the slider driving mechanism includes a servo motor (1), the host frame (5), ball screw (6), linear guides (9) and the slider body (8), wherein, the servo motor (1), ball screw (6) and linear guides (9) are mounted vertically on the host frame (5). The servo motor (1) connects with the ball screw. The slider body (8) connects with both the ball screw (6) and the linear guides (9). It is driven by a ball screw (6) and moves along a linear guides (9) in the vertical direction.

2. According to claim 1, a slider driving mechanism on a CNC assembly machine for assembled camshaft, wherein: there are two servo motor (2) which are mounted on the host frame (5) by a servo motor support base. They are directly connected with two ball screws (6) by connection set (3) separately. In the end, it can directly drive synchronized synchronously.

3. According to claim 1 or 2, a slider driving mechanism on a CNC assembly machine for assembled camshaft, wherein: the ball screw (6) is supported by the bearing housing (4) and the bearing (10) and mounted on the host frame (5). And it is connected with slider body (8) via a ball screw nut (7).

4. According to claim 1 or 2, a slider driving mechanism on a CNC assembly machine for assembled camshaft, wherein: there is a slider on the linear guides (9). The slider body (8) is mounted on the linear guides (9) via the slide.

Description

DESCRIPTION OF ACCOMPANYING DRAWINGS

[0013] FIG. 1. The product sketch of assembled camshaft

[0014] FIG. 2. The sketch of CNC assembly machine host for assembled camshaft

[0015] FIG. 3. The local sketch of shaft rotation mechanism of CNC assembly machine for assembled camshaft

[0016] FIG. 4. The sketch of shaft hobbing mechanism

[0017] In the figure:

[0018] 1servo motor, 2servo motor support base, 3connecting sleeve, 4bearing sleeve, 5host frame, 6ball screw, 7ball screw nut, 8slider body, 9linear guides, 10bearing, 11rotary disk support body, 12rotary table base, 13the clamping cylinder, 14guide sleeve, 15pull rod, 16transmission shaft, 17clamping mechanism block, 18gear box, 19driven gear, 20rim, 21spacer shim, 22the lands, 23hollow chuck, 24claws, 25shaft, 26servo motors, 27connection sets, 28transmission shaft, 29drive gear, 30hobbing cylinder, 31hobbing plate, 32knurled knife, 33rotary feeding plate, 34positioning fixture block, 35positioning fixture movable block, 36feeding cylinder, 37NC rotary table, 38parts of cam, hexahedron

DESCRIPTION OF THE PREFERRED EMBODIMENT

[0019] Following the present invention is the embodiment in conjunction with the accompanying drawings in a step for further description:

[0020] As shown in FIG. 1, the product structure sketch of assembled camshaft.

[0021] Referring to FIG. 2, FIG. 3, FIG. 4, a slider driving mechanism on a CNC assembly machine for assembled camshaft. It is composed as follows, servo motor 1, the ball screw 6 and linear guides 9 are mounted on the host frame 5, wherein, two servo motors 1 are mounted on the host frame 5 separately by the servo motor support base 2. And they are directly connected with the ball screw 6 by connecting sleeve 3. The ball screw 6 is supported by the bearing sleeve 4 and bearing 10 and is mounted on the host frame 5. The linear guides 9 is installed on the host frame 5 by bolts or other fasteners.

[0022] The ball screw nut 7 is mounted on the slider body 8 in order to achieve the movement of slider body 8 driven by ball screw 6. There is a slider on linear guide 9. The slider body 8 is mounted on the slide by linear guide 9. So the slider body 8 can do linear motion along the linear guides 9 driven by the ball screw 6.

[0023] In addition, in order to express specific embodiment of the invention more clearly, several key components on CNC assembly machine for assembled camshaft will be described briefly:

[0024] The shaft clamping device composed by clamping cylinder 13, guide sleeve 14, pull rod 15, transmission shaft 16, clamping mechanism block 17, gear box 18, driven gear 19, rim 20, spacer shim 21, the lands 22, hollow chuck 23, claws 24 is mounted on the slider body 8;

[0025] The shaft rotation mechanism composed by servo motors 26, connection sets 27, transmission shaft 28, drive gear 29, the driven gear 19, the transmission shaft 16 and gear box 18 is also mounted on the slider body 8;

[0026] The hobbing mechanism composed by hobbing cylinder 30, hobbing plate 31, knurled knife 32 is mounted on the host frame 5;

[0027] The automatic rotary feeding device composed by rotary feeding plate 33, positioning fixture block 34, positioning fixture movable block 35, feeding cylinder 36, NC rotary table 37 and rotary disk support body 11 is mounted on a rotary table base 12.

[0028] Referring to FIG. 2, FIG. 3, FIG. 4, the present invention is applied to CNC assembly assembled camshaft, performing the following steps:

[0029] a. manually or using robots put shaft 25 into the chuck 23, the claws 24 clamps the shaft 25. The parts of cam, hexahedron 38 are placed on rotary feeding plate 33. Positioning fixture block 34 and positioning fixture movable block 35 clamp these parts. In addition, the NC rotary table 37 sends the parts of cam, hexahedron 38 to the press-fit center position of host.

[0030] b. NC program, two servo motors 1 drive two ball screws 6 synchronously in forward direction and make them rotate. It makes slider body 8 move downward rapidly. When the shaft 25 reaches the hobbing predetermined position, surface of the shaft 25 is knurled. After hobing, the slider body 8 continues down and press the first cam on rotary feeding plate 33 into the hobbing position of shaft 25. Then the two servo motors 1 drive the slider body 8 synchronously in reverse direction to move upward rapidly to the initial position. Thus, the first cam is mounted on the shaft. According to the above process, press the other parts of cam, hexahedron and end 38 into the shaft 25 one by one in accordance with NC program compiled.

[0031] c. After the assembled camshaft is completed in the CNC assembly machines, manually or using robots remove the assembled camshaft, thus completing a cycle of work.