JPH035376Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a support roller for a milling machine that ensures stable clamping and eliminates workpiece chatter, poor cutting, chip damage, etc.

A conventional so-called floating type milling machine has a structure as shown in FIG. Bed6 via
It is supported by the upper base 7. Further, the swing head 3 and the base 7 are connected by a pin 8,
The swing head 3 rotates up and down about a pin 8 by the operation of a cylinder 9, thereby making it possible to rotate the upper support roller 1 up and down.

On the other hand, workpiece 1 such as a strip or plate
When machining the side end surface of the workpiece 10, both ends are held by the upper and lower support rollers 1 and 4, and the lower support roller 4 is fixed to the pace 7, so the clamp of the workpiece 10 is held by the cylinder. 9 and the swing head 3's own weight. The cutter 11 is attached to the swing head 3 and rotated by a drive device 12 such as a motor, while the upper support roller 1 is rotated by a drive device 13 such as an AC motor for lifting and lowering to accommodate the thickness of the workpiece 10. The position can be adjusted up and down using a worm jack (not shown).

However, in a milling machine having such a structure, the upper support roller 1 is fixed to the swing head 3, so if there is a wave above or below in the traveling direction of the workpiece 10, the rolling force of the upper support roller 1 will suppress the wave. If the workpiece 10 is flattened or the wave cannot be straightened, the swing head 3 rises, and as a result, the contact surface of the upper support roller 1 with the workpiece 10 is located at the highest point of the wave. For this reason, the workpiece 10 is not sufficiently clamped by the upper and lower support rollers 1 and 4, especially at the cutting center of the cutter 11, resulting in an unstable state.
The workpiece 10 is fixed to the swing head 3 together with the upper support roller 1.
This causes problems such as vibration, poor cutting, and chip damage.

The present invention is an improvement to the upper and lower support rollers in order to eliminate such inconveniences. A group of upper support rollers each rotatably held by the swing head via support blocks, arranged in plurality along the threading direction of the workpiece, and capable of contacting the upper surface of the workpiece; A plurality of rollers are rotatably held on the base via support blocks so as to face the group, and are arranged in plurality along the sheet passing direction of the workpiece, and can clamp and press the workpiece from above and below with the upper support roller group. In a milling machine that includes a lower support roller group and a milling cutter that is rotatably provided on the side of the workpiece and processes a side edge of the workpiece, the milling cutter is provided among the upper and lower support roller groups. Except for the upper and lower support rollers that clamp and hold the vicinity of the cutting center of the workpiece from above and below, the other upper and lower support rollers are respectively attached to the support block so as to be able to move up and down independently as the workpiece is displaced in the vertical direction. It is characterized by:

DESCRIPTION OF THE PREFERRED EMBODIMENTS The support roller for a milling machine according to the present invention will be explained below based on the embodiment shown in the drawings. The same members as in the conventional example will be described with the same numbers.

FIG. 2 is a side view showing one embodiment of the support roller according to the present invention (in this embodiment, three upper and lower support rollers 1 and 4 are arranged in series). ) work 10
Except for the central support rollers 1a and 4a located near the cutting center, the front and rear support rollers 1b,
4b, 1c, and 4c are configured to be able to move up and down to follow the vertical displacement of the workpiece 10 by means of springs 14b, 15b, and 14c, and 15c.

During cutting, it is essential that the workpiece 10 be clamped at both ends by the upper and lower support rollers 1 and 4. In particular, in the floating type milling machine shown in FIG. 11 is fixed to the swing head 3, and the vicinity of the cutting center of the workpiece 10 must be clamped by the upper and lower support rollers 1a and 4a. Therefore, except for the upper and lower support rollers 1a and 4a located near the cutting center like the support rollers 1 and 4 according to the present invention, the front and rear upper and lower support rollers 1
If b, 4b and 1c, 4c are configured to be movable up and down, even if the wavy work 10 passes through the support rollers 1, 4, the vicinity of the cutting center of the work 10 will be clamped from above and below, and the front and back will be clamped. Support rollers 1b, 4b and 1c, 4c
Shifts to move up and down to follow the wave, and chatter of the workpiece 10 and cutting defects will not occur. Further, since the workpiece 10 near the center of cutting is always clamped to the cutter 11 fixed to the swing head 3, the chip will not be damaged.

In this embodiment, springs 14b and 14 are used as a mechanism for vertically retracting the support rollers 1 and 4.
c, 15b, and 15c have been described as examples, but the present invention is not limited thereto, and can also be realized by a cylinder using hydraulic pressure or pneumatic pressure. In this case, the rolling force is
It becomes possible to change it corresponding to the plate thickness of 0.

As described above based on the embodiment shown in the drawings, according to the support roller for a milling machine according to the present invention, it is possible to provide a support roller that does not cause workpiece chatter or cutting defects, and does not damage chips. becomes.

[Brief explanation of drawings]

Figure 1 shows a conventional milling machine.
a is a front view, b is a side view, c is an enlarged front view of the upper support roller, d is a side view thereof, and FIG. 2 is a side view of the support roller according to the present invention. In the drawing, 1, 1a to 1c are upper support rollers, 3 is a swing head, 4, 4a to 4b are upper support rollers, 10 is a workpiece, 11 is a cutter,
14b, 14c, 15b, and 15c are springs.

Claims (1)

[Scope of utility model registration request] A swing head is provided above the base and pressed toward the base, and a plurality of swing heads are rotatably held by the swing heads via support blocks, and are arranged in plurality along the threading direction of the workpiece, and the upper surface of the workpiece. a group of upper support rollers that can come into contact with the upper support rollers; and a group of upper support rollers that are rotatably held on the base via support blocks so as to sandwich the workpiece and face the group of upper support rollers, and that are supported along the threading direction of the workpiece. a lower support roller group arranged in plurality and capable of pinching and pressing the workpiece from above and below with the upper support roller group;
In a milling machine comprising a milling cutter that is rotatably provided on the side of the workpiece and processes a side edge of the workpiece, a milling cutter that is rotatably provided on the side of the workpiece, and a milling cutter that processes the side edge of the workpiece, the milling cutter that processes the side edge of the workpiece. Except for the upper and lower support rollers that clamp and hold the work piece from above and below, the other upper and lower support rollers are respectively attached to the support block so as to be able to move up and down independently as the workpiece is vertically displaced. Support roller for milling machines.