JPH0278449A - Cutting equipment - Google Patents

Abstract

PURPOSE:To make chips fine by fitting a plurality of discoid cutters to a pair of parallel installed rotatable cutter shafts with each other and opening the trapping grooves on the outer circumferential faces of the cutters and providing the knife-edge face of a leverlike primary cutter just above the interval of the cutters. CONSTITUTION:A plurality of cutters 12 are fitted to a pair of parallel installed rotatable cutter shafts 9, 10 with each other and these cutters 12 are alternately engaged and arranged. The cutters 12 are formed into the nearly discoid shapes and a plurality of trapping grooves 14 are opened on the outer circumferential faces. Furthermore the knife-edge part 32 of a leverlike primary cutter 30 with a fixed one end is provided just above the interval of the uniaxially fitted cutters 12 and this knife-edge part 32 is arranged adjacently to the outer circumferential face of the cutter 12 of the opposed different shaft side. As a result, pieces to be treated such as the chips are cut with higher accuracy and higher precision and parting thereof can be made fine.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a cutting device that cuts chips etc. discharged from a machine tool into small pieces and processes them compactly. ) Chips discharged from machining tools such as lathes are sent to QB.
Not only does it scatter around the area, worsening the working F5 environment and impairing work safety, but it also causes problems such as low work efficiency as workers are required to clean it regularly. In view of this, the applicant, who wanted to improve the situation,
fI has a large number of cutters arranged around a pair of rotating shafts, and these cutters are meshed with each other to break the chips carried into the cutters into small pieces and process them compactly.
We have developed several chip cutting devices and their conveyance devices, and have already filed applications for these.

(Problems to be Solved by the Invention) The present invention further improves the cutting device for which the application has already been filed, cuts pieces to be processed such as chips with higher accuracy and precision than ever before, and improves compact processing. It is an object of the present invention to provide a cutting device as described above.

(Means for Solving the Problems) For this reason, the cutting device of the present invention uses a pair of rotatable cutter shafts installed in parallel. In a cutting device that is equipped with I Wi cutters and these cutters are arranged in mesh with each other in an intersecting LL manner, the cutter is formed into a substantially disk shape, and a plurality of capture grooves are opened on the outer circumferential surface of the cutter, while the cutters are installed coaxially. A cutting edge portion of a rod-shaped primary cutter with one end fixed is disposed directly above the cutters, and the cutting edge portion is disposed close to the outer circumferential surface of the opposite cutter on the opposite axis side.

(Embodiment) Below, an illustrated embodiment in which the present invention is applied to a chip cutting device will be described. In FIGS. 1 to 5, 1 is a conveyor case installed close to a machine tool (not shown). The discharge end of a scrap conveyor 2 for conveying chips discharged from a machine tool is accommodated therein, and a discharge conveyor 3 is opened below the conveyor.

4.4 is a support arm whose upper end is fixed to both side walls 1a and 1a of the conveyor case 1 and whose cross section is in the shape of a curved line Jfa, and a cutting device is held at the lower end of the support arm.

As shown in FIGS. 2 and 3, the cutting machine has a machine frame 8 in which a pair of vertical frames 6, 6 and a horizontal frame 7, 7 are assembled in a rectangular shape facing each other. A pair of cutter shafts 9 and 10 configured with splines, for example, are connected to the bearings IL,
It is rotatably supported via 11.

These cutter shafts9. A plurality of cutters 12 and spacers 13 are alternately attached to the IO, and these cutters 12 and spacers 13 are interposed alternately between the cutters 12 and spacers 13 on the different axis side, and are arranged in mesh as shown in the figure.

Among these, the L cutter 12 is formed in a substantially disk shape, and has a plurality of substantially semicircular capturing grooves 14 opened in its outer circumference.
Further, the spacer 13 has approximately the same thickness as the cutter 12 and has a circumferential surface having a smaller diameter than the cutter 12.

Gears 15 and 16 are fixed to the shaft ends of the cutter shafts 9 and 10, and are in mesh with each other, allowing the cutter shafts 9 and 10 to rotate at the same speed in opposite directions. I7 is a dish-shaped chute facing directly below the outlet 3, and a supporting piece 18.1 fixed to the side surface of the vertical frame 6.
8 , and 19 is a motor having a reducer 20 disposed close to it, and its drive shaft 21 and one cutter shaft 9 are connected via a coupler 22 .

In the figure, 23 is a chip storage box located below the cutting machine.
24 is a motor installed on the m outlet side of the scrap conveyor 2, 25 is a chain case, 26 is a switch box,
Reference numeral 27.27 is a guide member disposed close to the cutter 12, and its upper surface is formed into a slope inclined toward the cutter 12.

J[
It has a substantially comb-like shape.

The outer periphery of the cutter 12 is inserted into the notch 28, and a substantially claw-shaped scraper 29 is arranged close to the outer periphery of the spacer 13.

On the other hand, at the upper end of the horizontal bar 7.7, there are a plurality of primary
The L primary cutter 30, in which the proximal end of the cutter 30 is fixed and the cutting edge at the distal end thereof is disposed on the spacer 13, is formed into a substantially bite shape as shown in FIGS. 4 and 5. , a shank portion 31 bent into a substantially square shape.
A cutting edge portion 32 is provided at the tip of the blade. Further, a substantially arc-shaped recess 33 is formed on the lower surface of the tip side of the shank portion 3I, and the recess 33 is positioned directly above the upper circumferential surface of the spacer 13, and the cutting edge portion 32 is placed on the circumferential surface of the opposing cutter 12. They are placed close together.

A recessed hole 34 is formed at the rear end of the shank portion 31,
Further, a recessed groove 36 is formed in the upper end of the horizontal frame 7, and the rear end of the shank portion 31 is accommodated in the recessed groove 36.
The primary cutter 30 is attached by inserting a bolt 35 into the hole 4 and screwing it into a screw hole 37 formed at the bottom of the groove 36.

(Function) When installing the cutting device configured as described above, the upper edge of the chute 17 is positioned at the mouth edge of the outlet 3 of the conveyor case l, and the upper end of the support arm 4.4 is positioned at the edge of the outlet 3 of the conveyor case l.
The machine frame 8 is fixed to the side surface of the
For example, it may be fixed to the end surface of the base.

In this case, when assembling the cutter, spacer 1
Prepare the same number of primary cutters 30 as 3, and accommodate one end of them in the groove 36 formed at the -F end of the horizontal frame 7, and insert the bolt 35 into the groove 34 of the cutter 30. Then, the bolt 35 is screwed into the screw hole 37 to fix the cutter 30 in a cantilevered manner.

In this situation, as shown in FIG. 4, the other end of the primary cutter 30 is positioned directly above the upper circumferential surface of the spacer 13, and its cutting edge 32 is close to the upper circumferential surface of the cutter 12 facing the spacer 13. will be placed.

Thus, when using a cartoon cutting device.

The motor 19 is driven to rotate one of the cutter shafts 9 linked to the drive shaft 21, and a gear 15 is fixed to the end of the shaft 9, and a gear 16 meshes with the gear 15.
, the cutter shaft io is rotated at the same speed in the opposite direction to the shaft 9, and a large number of cutters 12 and spacers 13 attached to these shirts 1-9 and 10 are moved together.

Under these circumstances, when chips are put into the cutting machine,
The chips are transferred to the cutter 1 through the capture groove 14 of the cutter 12.
2, and in the process the primary cutter 3
0 and is handled at the same time, becomes tense, and breaks.

Chips after rti cutting are distributed between the lower surface of the cutting edge portion 32 and the cutter 12.
The cutter 12 passes through the space between the cutter 12 and the circumferential surface of the cutter 38, moves to the gap 38 side, is finely broken by the cutter 12 at that part, and is stored in the chip storage box 23.

In this way, in the present invention, first, the primary cutter 30
Since the chips are first cut by the cutter 12 and then cut by the cutter 12, the chips are cut twice. 32 closes the upper part of the gap 38 to prevent uncut chips from passing through the IJ, thereby enhancing the above-mentioned action and also due to the scraper action of the cutting edge portion 32.

This prevents chips from adhering to the circumferential surface of the cutter 12 and prevents chips from clogging.

(Effects of the Invention) As described above, the cutting device of the present invention is a cutting device in which a plurality of cutters are attached to a pair of rotatable cutter shafts installed in parallel, and these cutters are arranged in mesh with each other alternately. The cutter is formed into a substantially disk-like shape, and has a plurality of capture grooves on its outer circumferential surface, while the cutting edge of a rod-shaped primary cutter with one end fixed directly between the coaxially mounted cutters. Since the cutting edge is arranged close to the outer circumferential surface of the opposite cutter on the opposite axis side, the pieces to be processed such as chips are transferred to the primary cutter prior to cutting by the cutter attached to the cutter shaft. In addition to the subsequent cutting with a cutter, the processed piece can be cut with high accuracy and precision, and the cutting can be made finer.

[Brief explanation of the drawing]

Fig. 1 is an external view showing an example of the usage state of the present invention, Fig. 2 is an enlarged sectional view showing the main parts of the invention, Fig. 3 is a plan view showing the main parts in the history of the invention, and Fig. 3 is a plan view showing the main parts of the invention. FIG. 4 is an iE plane view showing how the primary cutter applied to the present invention is installed, and FIG. 5 is a perspective view showing an example of the primary cutter applied to the present invention. 9.10... Cutter shaft ■ 2 - Cutter, 14 - Draw 1 foot groove 30 - Primary - Cutter 32... 4" hole at the cutting edge -

Claims (1)

[Claims] In a cutting device in which a plurality of cutters are attached to a pair of rotatable cutter shafts installed in parallel, and these cutters are arranged in mesh with each other alternately, the cutters are formed into a substantially disk shape, and a plurality of cutters are formed on the outer peripheral surface of the cutter. While opening the capture groove, the blade edge of a rod-shaped primary cutter with one end fixed is placed directly above the cutters mounted on the same axis, and the blade edge is close to the outer circumferential surface of the opposing cutter on a different axis. A cutting device characterized in that: