JP2000015537A - Chip cutter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a simple structure, a small size and a light weight, to facilitate installing to a finishing machine, to facilitate the recovery of chips, to reduce a temporary storing place, and to allow to obtain at a low cost. SOLUTION: To a casing 5 of a screw conveyer 3 for chip to cut and carry out, a cutter casing 6 is provided in the communicating condition by positioning at the upper part on the carrying out starting end side, a cutter 10 is provided in the cutter casing 6 through rotary shafts 8 and 9, a chip throwing-in hopper 14 is provided at the upper part of the cutter casing 6, and the chip cutter 10 is composed to drive the shaft 7 of the screw conveyer 3, and the rotary shafts 8 and 9, by one set of gear motor 4 provided on the conveyer casing 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a processing machine such as a lathe,
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chip cutting machine for making chips, such as NCs, machining centers, and boring machines, smaller and easier to process.

[0002]

2. Description of the Related Art In general, chips discharged from a processing machine such as a lathe are discharged in a large amount as a long (helical (commonly known as permanent)) object having a fixed shape or a thin and hard blade-shaped object. Therefore, the processing is dangerous and bulky, and the processing is troublesome, and the scrap processing company pays the processing price and has it picked up.

Conventionally, as a chip cutting device, a cutter shaft connected to an output shaft of a motor and a cutter shaft rotated in a direction opposite to the cutter shaft are laid in parallel with each other, and a large number of cutters are mounted on both cutter shafts. An arrangement in which spacers are alternately meshed is known, and is a large-scale method for cutting a large amount of chips at a time.

[0004]

Conventionally, a chip cutting device is large and very expensive, and small and medium-sized enterprises still use a chip processing machine in order to have a scrap processing company collect the chips. At present, the chips are taken out and stored, and there is a problem that the work of removing the chips is dangerous and the bulk is large, so that a large storage space is required.

SUMMARY OF THE INVENTION The present invention has been made in view of the above situation, and has as its object the purpose of cutting a chip by inserting a cutter portion under a chip collecting portion of various processing machines and cutting chips. It is an object of the present invention to provide a chip cutting machine which can reduce the size of a temporary chip storage area, can be driven by one drive source (motor), and can be obtained at low cost.

[0006]

According to the present invention, the following technical measures are taken to achieve the above object. That is,
The present invention provides a cutter conveyor, wherein a cutter casing is provided in an upper portion of the casing of a screw conveyor for carrying out chips to be cut, which is located at an upper portion of a carry-out start side, and a cutter is disposed in the cutter casing via a rotating shaft. It is characterized in that a chip input hopper is provided on the upper part of the casing, and the shaft and the rotary shaft of the screw conveyor are driven by a single drive source disposed on the conveyor casing.

In this case, a chip discharge opening is provided at the bottom of the chip accumulation portion of a machining machine such as a lathe, and the chip input hopper is positioned below the opening to fix the conveyor casing to a lathe or the like. The chips falling to the chip stacking section are guided to the hopper as they are, cut finely by a cutter, and discharged by a screw conveyor,
Chips can be safely processed without bothering the operator. The chips thus finely cut can be sold as scrap.

Further, in the present invention, the screw conveyor is provided so as to be inclined or tiltable so that the chip discharge end side thereof is higher, and the screw conveyor shaft and the cutter rotating shaft are provided parallel or at an angle to each other. Things. According to this, a collecting container (waste can) can be placed below the chip discharge end of the screw conveyor, and the chip layer to be cut can be easily collected.

When the rotary shaft and the drive source (output shaft of the drive motor) are connected via a crack, only the screw conveyor can be driven to rotate with the cutter stopped rotating. It should be noted that the rotating shaft and the driving source can be directly connected without using a clutch. And the screw conveyor can be supported via height adjustment means and inclination angle adjustment means,
Thereby, the attachment adjustment to the lathe or the like becomes easy.

Further, the screw conveyor can be supported and movable via wheels, so that the screw conveyor can be easily moved and adjusted on each lathe or the like, and the mounting workability can be improved. Further, the rotating shafts are arranged in a pair in parallel with each other, and by making the rotating speed of one of the rotating shafts higher than that of the other, the cutting speed is made different and the cutting is performed smoothly and reliably. In addition, it is possible to prevent chips from being clogged, and to improve cutting efficiency.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 show a first embodiment of a chip cutting machine 1 according to the present invention. This chip cutting machine 1
Is mainly composed of a chip cutting means 2, a screw conveyor 3 which is a means for carrying out chips to be cut, and a geared motor 4 which is a driving source of both means 2 and 3.

The chip cutting means 2 includes a cutter casing 6 provided on the casing 5 of the screw conveyor 3 and communicated with the chip at a position above the starting end of the chip to be carried out.
A pair of rotating shafts 8 and 9 which are supported in the casing 6 in parallel with each other and in parallel with the screw conveyor shaft 7;
A plurality of cutters 10 and spacers 11 alternately mounted on the rotating shafts 8 and 9 in the axial direction, and an interlocking gear provided on the rotating shafts 8 and 9 outside the cutter casing 6 and having different numbers of meshing teeth. 12 and 13.

A chip input hopper 14 is provided at an upper opening of the cutter casing 6. The screw conveyor 3 is composed of the conveyor shaft 7 mounted in a casing 5 and a screw blade 3A fixed to the shaft 7, and is supported by the support legs 15 so as to be tiltable so that the end of the carry-out can be raised. Have been. A chip discharge port and an outlet hopper 16 are provided below the unloading end of the conveyor casing 5, and a chip recovery container (dust can) 17 can be disposed below the hopper 16. It has become.

A transmission chain gear 18 is fixed to an end 7A of the screw conveyor shaft 7 protruding toward the unloading end. The geared motor 4 is provided on the upper surface of the unloading end side of the conveyor casing 5 so that an output shaft 19 thereof is parallel to the screw shaft 7, and both ends of the output shaft 19 are respectively protruded from the motor casing 4A. A drive chain gear 20 is fixed to the chain gear 18 side end corresponding to the gear 18. A transmission chain 21 is wound around the two chain gears 18 and 20.

A first universal joint 22 is attached to the end of the output shaft 19 of the geared motor 4 on the cutter 10 side.
The first cutter drive shaft 23 is connected via the. This drive shaft 23 is connected to a second drive shaft 25 via a clutch 24.
The other end of the second cutter drive shaft 25 is connected to one of the outer ends 9A of the cutter shaft 9 via a second universal joint 26.

The support leg 15 has a foot 27 at its lower end.
The height of the screw can be adjusted by screwing an adjusting bolt 28 as a height adjusting means having a height, and a screw conveyor 3 is provided at its upper end with a wing bolt 29 for adjusting a tilt angle having a horizontal axis and an axis perpendicular to the screw shaft 7. Thus, the screw conveyor 3 is mounted so as to be swingable in the vertical direction, and the inclination angle of the screw conveyor 3 can be arbitrarily changed.

As the clutch 24, various known clutches can be employed, but a spline structure shown in FIG. 4 can be used. That is, in the clutch 24, the outer circumferences of the first and second cutter drive shafts 23 and 25 on the opposite side are spline shafts 23A and 25A having the same shape and the same size, and the spline grooves 30 are formed.
Is provided so as to be slidable in the axial direction, and the clutch cylinder 24A is detachably attached to the first cutter drive shaft 23 (or the second cutter drive shaft 25) by a fixing bolt 31.

The clutch cylinder 24A is provided with a spline groove 30 in about half of the inner peripheral surface thereof, and the other half, that is, the inner diameter of the hole 31 on the first cutter drive shaft 23 side is larger than the outer diameter of the spline shaft 23A. Has been enlarged. Therefore,
When the clutch is slid in the direction (a) indicated by the arrow in FIG. 4, the clutch is engaged (shown by a solid line in FIG. 4), and when slid in the direction (b) indicated by the arrow in FIG. One spline shaft 23A escapes, and the clutch is in the "disengaged" state (indicated by a two-dot chain line in FIG. 4), the transmission of power is cut off, and the cutter 10 does not rotate. In this state of the clutch “detachment”, the fixing bolt 31 is kept loose. Then, when the clutch is in the “on” state, the clutch cylinder 24A is fixed to the first cutter shaft 23 by the fixing bolt 31.

In the first embodiment, the chip cutting machine 1
1 is mounted on the NC lathe 32 and used as shown by a two-dot chain line in FIG. A chip discharge opening 35 is provided in the portion, and a chip cutting machine insertion opening is provided in a side wall below the opening 35 so that the cutting means 2 of the chip cutting machine 1 has an upper opening of the input hopper 14 immediately below the chip discharge opening 35. , The height and the position are adjusted, and after setting to the state shown in FIG. 1, the operation is started.

When the operation of the geared motor 4 is started with the clutch 24 turned on, the screw conveyor shaft 7 and the cutter rotating shafts 8 and 9 rotate simultaneously. At this time, since the number of teeth of the interlocking gears 12 and 13 of the rotating shafts 8 and 9 is different, one rotating shaft 8 (or 9) is
(Or 8), and rotate in the opposite direction (in the direction in which the upper sides face each other as indicated by the arrow in FIG. 2), and the helical chips and the like that have entered the cutter casing 6 through the charging hopper 14 are removed. The cutter 10 cuts finely (1/10 or less of the original size) and smoothly.

The chips (chips to be cut) cut in this manner fall into the conveyor casing 5 from the communication opening immediately below the cutter 10 and are rotated by the rotating screw blades 3A.
As a result, it is conveyed through the casing 5 toward the discharge port, and is dropped and collected from the exit hopper 16 at the end of discharge to the waste can 17. When only the screw conveyor 3 is to be operated, the clutch cylinder 24A is indicated by an arrow (b) in FIG.
The rotation of the cutter 10 can be stopped by sliding in the direction shown by the arrow and disengaging the clutch.

Therefore, by continuing the operation of the chip cutting machine 1 during the operation of the NC lathe 32, the generated chips can be continuously shredded, and the chips do not accumulate in the chip accumulating portion 34. In addition, it is possible to eliminate a dangerous chip discharging operation by the operator, and to have the scrap company purchase the chips to be cut, so that a large chip storage space is not required. According to the first embodiment, the cutting processing capacity only needs to be able to cope with both of the generated chips.
Since the cutter 10 operates the screw conveyor 3 by one geared motor 4, the structure can be extremely simple and inexpensive. Therefore, even in the small and medium-size processing industry, it is possible to shred chips by attaching to each processing machine. In addition, because screw conveyor 3 is adopted,
Chips can be smoothly carried out without clogging.

FIG. 5 shows a second embodiment of the present invention. A wheel 37 and a free wheel 38 are provided at the lower end of a support base 36 so that the chip cutter 1 can be moved and the cutter 10 can be moved.
This embodiment is different from the first embodiment in that the rotating shafts 8 and 9 are horizontally mounted. Further, the conveying path of the screw conveyor 3 is lengthened to increase the discharge position of the chips to be cut, so that a large collection container 39 such as a drum can can be arranged, and one unit can cope with the chip cutting processing of various processing machines. It has become.

At the upper end of the leg support 40 of the support leg base 36, a lower portion of the conveyor casing 5 at the starting end for carrying out is mounted via a horizontal mounting shaft 41 orthogonal to the screw shaft 7 so as to be vertically swingable. I have. The rear extendable leg 42 of the support leg base 36 is extendable and contractable by the inner and outer double tubes 42A and 42B and is made longer than the front leg 40. The upper end of the inner tube 42A is closer to the unloading end side of the conveyor casing 5. , Are mounted so as to be relatively rotatable via a mounting shaft 43 parallel to the mounting shaft 41.

The inner tube 42A and the outer tube 42B constituting the rear leg 42 are provided with fixing pin holes 44, 45 at desired intervals.
Are provided in a penetrating manner, and a fixing pin or a fixing bolt 46 is provided.
, The length (height) of the screw conveyor 3 can be adjusted, and the inclination angle of the screw conveyor 3 and the discharge height of chips to be cut can be arbitrarily adjusted. Since the configuration of the second embodiment other than the above is the same as that of the first embodiment, common components are denoted by the same reference numerals as in FIG. 1 and detailed description is omitted.

The present invention is not limited to the above-described embodiment. For example, the screw conveyor 3 can be configured to be horizontal or the end of the unloading side can be lowered. 5 or the cutter casing 6 or the other side can be attached to the side wall of the lathe or the like or the opening thereof, and the design can be appropriately changed. In addition, the chip cutting machine 1 according to the present invention includes the existing NC lathe 32
It can be used as a post-installation tool for machining centers, general-purpose lathes, drilling machines, etc., as well as metal chips (steel, iron, stainless steel, aluminum alloys, castings, etc.) Can be shredded.

[0027]

As described above, the chip cutter according to the present invention is provided with a cutter casing in communication with a screw conveyor for discharging chips to be cut, which is located at an upper portion on the starting end side of the screw conveyor. A cutter is disposed via a rotating shaft therein, a chip input hopper is provided at an upper portion of the cutter casing, and a single driving source disposed on the conveyor casing drives the shaft of the screw conveyor and the rotating shaft. The structure is simple, compact and lightweight, and can be obtained at a low cost. In addition, the cutter can be inserted under the chip accumulation part of the processing machine. By making it compact (1/10 to 1/15 of the original volume), its collection work becomes easier and the temporary storage space for chips can be reduced. It is possible to improve the working environment, such as interfering with injuries of chip control operator, furthermore, it is possible to reduce the scrap collection cost.

[Brief description of the drawings]

FIG. 1 is a front view showing a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is an enlarged longitudinal sectional view of the clutch according to the embodiment.

FIG. 5 is a front view showing a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Chip cutting machine 2 Chip cutting means 3 Screw conveyor 4 Geared motor (drive source) 5 Conveyor casing 6 Cutter casing 7 Screw conveyor shaft 8 Rotation axis 9 Rotation axis 10 Cutter 14 Chip hopper 15 Support leg 24 Clutch 28 Height adjustment bolt 29 tilt angle adjusting wing bolt 36 support leg stand 37 wheel 38 free wheel 42 rear telescopic leg (tilt angle adjusting means)

Claims (6)

[Claims] 1. A cutter casing is provided on a casing of a screw conveyor for carrying out chips to be cut and is located at an upper portion of a carry-out starting end side thereof in a communicating manner, and a cutter is disposed in the cutter casing via a rotary shaft. A chip cutting machine, wherein a chip input hopper is provided at an upper part of a cutter casing, and a single drive source provided on the conveyor casing drives a shaft of the screw conveyor and the rotating shaft. 2. The screw conveyor is provided so as to be inclined or tiltable so that the end of the chip to be cut-out is raised, and the screw conveyor shaft and the cutter rotation shaft are provided in parallel or at an angle to each other. The chip cutting machine according to claim 1. 3. The chip cutting machine according to claim 1, wherein the rotating shaft and the driving source are connected via a clutch. 4. The chip cutting machine according to claim 2, wherein said screw conveyor is supported via a height adjusting means and an inclination angle adjusting means. 5. The chip cutter according to claim 1, wherein said screw conveyor is supported and movable via wheels. 6. The rotating shaft according to claim 1, wherein two rotating shafts are disposed in parallel with each other, and one of the rotating shafts has a higher rotating speed than the other. Chip cutting machine.