JPH06277546A - Swarf treating machine - Google Patents

Abstract

PURPOSE:To provide a swarf treating machine which can finely cut swarf and sufficiently reduce the volume of the swarf by surely applying a shearing stress on the swarf even if the swarf comes into the machine from any directions. CONSTITUTION:A casing is internally provided freely rotatably and parallel with a pair of cutting shafts 5, 6 mounted alternately with a plurality of small- diameter cutters 10 and large-diameter cutters 8 in such a manner that the small-diameter cutters 10 of the one cutting shaft 5 and the large-diameter cutters 8 of the other cutting shaft 6 face each other and that the flanks of the large-diameter cutters 8 of the one cutting shaft 5 and the flanks of the large-diameter cutters 8 of the other cutting shaft 6 are adjacent to each other. The small-diameter cutters 10 and the large-diameter cutters 8 are respectively provided with cutting blades 7, 9 formed to a saw wave shape at the front ends. The machine is so constituted that a pair of these cutting shafts 5, 6 are respectively rotated and that the front ends formed to the saw wave shape of the respective cutting blades 7, 9 are differentially aligned to the front ends of the saw wave shape of the cutting blades 7, 9 formed on the respective opposite cutters 8, 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chip processing machine for cutting chips discharged from a machine tool into small pieces to reduce the volume of the chips.

[0002]

2. Description of the Related Art Chips discharged from a machine tool for cutting or the like have various shapes such as a spiral shape and an arc shape, and the length thereof is various such as long and short. Therefore, the volume is much larger than the actual volume. Therefore, there is a problem in that these chips have a very large occupied area in a factory or the like, and the disposal cost is also high. As a method for solving such a problem, there is known a device for cutting chips into fine pieces and reducing the volume thereof to facilitate the treatment (Japanese Patent Laid-Open No. Sho 61-206).
62-259746). The conventional device described above, in the casing, a cutter provided with a plurality of cutting blades on the outer periphery and a pair of cutting shafts alternately mounted with spacers are arranged in parallel,
The tip surface of the cutting blade of the cutter and the outer peripheral surface of the spacer are closely opposed to each other, and the cutter of each cutting axis can closely pass through the surface of the casing that faces the cutting axis in parallel. A scraper having a groove is provided so that the tip end surface of the scraper closely faces each spacer. Each of the cutting shafts rotates in the same direction, collects the chips carried in the casing in two places between the two cutting shafts and between one cutting shaft and the scraper, and adjoins them. The cutting blade and the cutting blade and the scraper adjacent to the cutting blade act to apply shearing stress to the chips and finely cut the chips.

[0003]

However, in the above-mentioned conventional chip processing machine, the chips are collected in two places, so that the device will be clogged even if a large amount of chips are brought into the casing at one time. Although it has the advantage that it does not occur, it has the following problems. FIG. 5 is a schematic perspective view showing a cutting shaft in a conventional chip processing machine, in which 51 is a cutter, 52 is a cutting blade provided on the cutter 51, 53 is a spacer, and 54 and 55 are cutting shafts, respectively. ing. On the other hand, the arrows x, y, z in the figure each indicate the longitudinal direction of the chips to be processed. In this conventional device, if the chips are oriented in the y direction, shear stress is applied to the chips by the plurality of cutters 51, so that the chips can be effectively cut into fine pieces. , Especially when facing the z direction, shear stress cannot be applied because the chips are located between the tip surface of the cutter and the outer peripheral surface of the spacer, and as a result, the chips are separated between the cutter and the spacer. It cannot be satisfactorily cut because it passes through the space. The main purpose of the chip processor is to cut the chips into smaller pieces to reduce the volume and facilitate the processing of the chips.Therefore, as mentioned above, it is important to leave chips that cannot be cut satisfactorily. It is a problem and its improvement is expected from the beginning. As a method of solving such a problem, a method of preliminarily aligning the chips to be processed in the y direction may be considered, but since the chips have various shapes and lengths respectively as described above, all of them are processed. Is extremely difficult to intentionally align in the y-direction in the drawing, and is costly, which is not practical. The present invention solves the above-mentioned conventional problems, and reliably applies a shear stress to chips regardless of the direction in which the chips enter, can cut them finely, and can sufficiently reduce the volume of the chips. It is an object of the present invention to provide a chip disposer capable of processing.

[0004]

In order to achieve the above-mentioned object, a chip disposal machine of the present invention is provided with a pair of cutting shafts in which a plurality of small-diameter cutters and a plurality of large-diameter cutters are alternately mounted. The small-diameter cutter and the large-diameter cutter of the other cutting shaft face each other, and the side surface of the large-diameter cutter of the one cutting shaft and the side surface of the large-diameter cutter of the other cutting shaft are adjacent to each other. And rotatably and parallelly provided inside the casing, and each of the small-diameter cutter and the large-diameter cutter is provided with a corrugated cutting blade, and the pair of cutting shafts are rotated respectively. , The cutting edge corrugated tip surface of each cutting blade and the cutting blade corrugated tip blade surface provided on each of the opposing cutters, on the line connecting the center and center of each opposing cutter It is characterized in that it is configured to match.

[0005]

In the chip-disposing machine of the present invention constructed as described above, the chips carried into the casing are cut with the cutting shaft by the two parallel cutting shafts rotatably provided therein. The chips are gathered between the cutting shafts, and the chips are subjected to shear stress at the side surface of the cutting blade provided on the cutter of each cutting shaft to finely cut the chips. At this time, chips that are not subjected to shear stress by the side surfaces of the cutting blades described above, that is, chips that are oriented in a direction substantially perpendicular to the blade surface of the cutting blades are formed in a corrugated shape of the opposing cutting blades. When the blade surfaces of the tips are differentially matched, they are bent and sheared by the opposing corrugated tips parallel to the blade surfaces.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the chip processor of the present invention will be described below with reference to the accompanying drawings. 1 is a schematic top view of the chip disposer of the present invention with a casing broken, FIG. 2 is a schematic cross-sectional view of the chip disposer cut along line AA in FIG. 1, and FIG. 3 is a cutting shaft portion. The respective schematic perspective views showing the details of FIG. In the figure, reference numeral 1 is a chip processing machine main body, which is provided with a rectangular casing 2 whose upper and lower ends are open. At the upper end of this casing 2, there is a hopper 3 that expands upward in a tapered shape, The processed material storage case 4 for storing the cut chips is provided at the lower end (see FIG. 2). Inside the casing 2, a pair of cutting shafts 5 and 6 are arranged in parallel.
Both ends of the shaft 6 are rotatably fixed to the casing 2. Each of the cutting shafts 5 and 6 has a large-diameter cutter 8 having a plurality of cutting blades 7 on the outer circumference and a small-diameter cutter 10 having a width substantially the same as the cutter 8 having a plurality of cutting blades 9 on the outer circumference. Cutter 10 and cutting shaft 6 of cutting shaft 5 are alternately spline-fitted
Of the cutting shaft 5 and the cutting shaft 6 face each other.
The cutter 10 is made to face each other. The above-mentioned cutting blade 7 is formed in a wavy shape, for example, in a sawtooth shape at its tip surface, and is formed in a sawtooth shape so that the tip surface of the cutting blade 9 matches the tip surface of the opposing cutting blade 7 (Fig. (See a partially enlarged view of 1 (b)).

In the figure, 11 and 11 are scrapers provided inside the casing 2 so as to face each other, and at the tips thereof, large-diameter cutters 8 and 8 of the cutting shafts 5 and 6 that face each other can be closely passed. In addition, a plurality of recessed grooves are formed to prevent chips before cutting from laterally falling into the processed material storage case 4 without being processed. Also, this scraper 1
The upper part of 1 is formed in a shape that is inclined inward so as to be continuous with the hopper 3, and is configured to efficiently collect chips in the cutters 8 and 10. The ends of the cutting shafts 5 and 6 extend to the outside of the casing 2, and gears 12 and 13 are provided at one of the extending ends. These gears 1
2 and 13 are meshed with each other, and when the cutting shaft 5 is rotated by the drive motor 14 connected to the cutting shaft 5, the cutting shaft 6 rotates at the same speed in the opposite direction R2 to the rotation direction R1 of the cutting shaft 5. Is configured.

The operation of the chip processing machine configured as described above will be described below. The chip processing machine 1 is provided at a discharge end of a chip carry-out device (not shown) provided in a machine tool (not shown), and the chip is supplied from the discharge device into a hopper 3 provided at an upper part. The supplied chips are stored in the hopper 3
Are tapered so that they can be smoothly collected in the casing 2. In the casing 2, the cutting shafts 5 and 6 rotate in the directions of the arrows R1 and R2, and the cutting blades 7 of the cutters 8 and 10 provided on the shafts 5 and 6 cut the chips between the two cutting shafts 5 and 6. To collect. Thereafter, the chips are successively finely cut by the large-diameter and small-diameter cutters 8 and 10 of the shafts 5 and 6, respectively, and fall into the processing object storage case 4 below. At this time, among the chips, those whose longitudinal direction is substantially parallel to the cutting axes 5 and 6 (see the y direction in FIG. 5) are cut by being subjected to shear stress by the side surface of the adjacent cutting blade 5, and Of the chips, those whose longitudinal direction is nearly perpendicular to the cutting axes 5 and 6 and those which are substantially parallel to the cutters 8 and 10 (z in FIG. 5).
Direction and x direction), the cutting blade 7 is formed in a sawtooth shape,
The tip of 9 gives shear stress and cuts.

The tips of the cutting blades 7 and 9 formed in a sawtooth shape will be described in detail below. The cutting blades 7 and 9 described above operate differentially because the cutters 8 and 10 have different diameters, and on the line connecting the centers of the cutters 8 and 10, the blades at the tips formed in a sawtooth shape. The surfaces 7a and 9a are configured so as to coincide with each other (see FIGS. 4 (a) to 4 (d). This figure shows the positional relationship between the opposing cutting blades 7 and 9 when the cutting shafts 5 and 6 rotate. FIG. As described above, since the facing cutting blades 7 and 9 are differentially matched, when the blade surfaces 7a and 9a are matched, the chip and the cutter 8, whose longitudinal direction is nearly perpendicular to the cutting axes 5 and 6, The chips substantially parallel to 10 are bent substantially parallel to the blade surfaces 7a and 9a by the matching portions. As a result, it is possible to effectively apply shear stress to the chips with the blade surface of the tip formed in a sawtooth shape, and it is possible to cut the chips finely.

In this embodiment, the number of cutting blades 7 provided on the large-diameter cutter 8 is the same as the number of cutting blades 9 provided on the small-diameter cutter 10, but this number is the same as that of the present embodiment. It is needless to say that it is not limited to the above and may be arbitrarily changed according to the size of cutting chips. Further, in the present embodiment, the cutting shaft 5 and the cutting shaft 6 are rotated at the same speed, but this rotation speed is not limited to this embodiment, and the amount of chips to be processed and the size for cutting chips are large. Of course, it may be appropriately changed according to the circumstances. Further, although the chip disposal machine of this embodiment is provided with the comb-shaped scraper 11, this is not essential to the present invention. In addition, in the present embodiment, the tips of the cutting blades 7 and 9 are formed in a sawtooth shape, but the shape of the tips is not limited to this embodiment, and any wave shape that can be matched with each other can be used. It may have any shape, for example, a sinusoidal shape.

[0011]

In the chip disposal machine of the present embodiment, small-diameter cutters and large-diameter cutters are alternately provided, and cutting blades are provided on the outer peripheral surface of each cutter, and the cutting blades of the small-diameter cutter are Since the tip and the tip of the cutting blade of the large-diameter cutter that opposes this are formed in a corrugated shape that matches each other, rotating both cutting shafts causes the opposing cutting blades to differentially move. The blade surfaces of the tips of the cutting blades that move and face each other match, and at the time of this matching, the chips that are oriented substantially perpendicular to the blade surface of the cutting blade are bent substantially parallel to the blade surface of the cutting blade,
The chips can be completely sheared into slices at each tooth of the closely adjacent corrugated portion, and the desired effect can be achieved.

[Brief description of drawings]

FIG. 1 (a) is a schematic top view of a chip processing machine according to the present invention in a state in which a casing is broken. FIG. 1 (b) is a schematic enlarged view of a tip portion of the cutting blade in FIG.

FIG. 2 is a schematic cross-sectional view of the chip disposal machine, taken along line AA in FIG. 1 (a).

FIG. 3A is a schematic perspective view of a cutting shaft portion; FIG. 3B is a schematic enlarged view of the vicinity of the cutting blade in FIG.

4A to 4D are operation diagrams showing the positional relationship between the cutting blade of the small diameter cutter and the cutting blade of the large diameter cutter when the cutting shaft is rotating.

FIG. 5 is a schematic perspective view of a cutting shaft portion of a conventional device.

[Explanation of Codes] 1 Chip Disposer 2 Casing 3 Hopper 4 Waste Storage Case 5 Cutting Axis 6 Cutting Axis 7 Cutting Blade 7a Blade Face 8 Large Diameter Cutter 9 Cutting Blade 9a Blade Face 10 Small Diameter Cutter 11 Scraper 12 Gear 13 Gear 14 motor

Claims (1)

[Claims] 1. A pair of cutting shafts in which a plurality of small-diameter cutters and a plurality of large-diameter cutters are alternately mounted, a small-diameter cutter of one cutting shaft and a large-diameter cutter of the other cutting shaft face each other, and ,
The side surface of the large-diameter cutter of one cutting shaft and the side surface of the large-diameter cutter of the other cutting shaft are rotatably provided in parallel with each other inside the casing so as to be adjacent to each other, and the small-diameter cutter and the large-sized cutter are provided. To the cutter of the diameter, the cutting blade with the corrugated tip is provided respectively, and by rotating each of these pair of cutting shafts, the cutting surface of the corrugated tip of each cutting blade is faced to the opposing cutter. With the corrugated tip blade surface of the provided cutting blade,
A chip processing machine, characterized in that it is configured so as to match on a line connecting the centers of the opposing cutters.