JP4050069B2 - Chip removal device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an apparatus for appropriately transporting chips generated by a cutting machine tool to the outside of the machine so as not to stay in the machine.
[0002]
[Prior art]
As an apparatus for carrying out generated chips to the outside of the machine, an optimum carrying-out apparatus has been proposed according to the type of machine tool and the state of generation of chips. Most unloading apparatuses are provided with a groove for dropping one or more chips parallel to the moving direction of a moving body such as a table or a saddle, and a screw type or conveyor type chip conveying device is incorporated in the groove.
[0003]
In medium-sized to small-sized cutting machines, as the whole cover is designed to be compact from the viewpoint of installation space of the machine, a chip discharge device is also required to be miniaturized. Most of the chips generated at the time of cutting are collected in a chip groove provided in parallel with the moving direction of the moving body, and the chips are carried out of the machine by a carry-out member. In order to protect the sliding surface of the moving body, a sliding cover is provided in the moving direction of the moving body. The upper part of the slide cover is formed in a slope or a roof shape, and most of the scattered chips are collected by sliding down into a chip receiving groove parallel to the moving direction of the moving body.
[0004]
However, there are cases where the inclined surface is gentle or cannot be collected in parallel chip receiving grooves due to the nature of the chips.
In FIG. 3, the moving body 101 abuts on the sliding surface 102 a of the bed 102 or is guided through the bearing 103 and moves in the left-right direction in the drawing. One end of the uppermost cover 104 </ b> A of the slide cover 104 is fixed to the moving body 101. The lowermost layer cover 104 </ b> Z of the slide cover 104 is fixed to a cover support 114 fixed to the bed 102 or the entire cover 105.
[0005]
An intermediate layer cover 104Y that guides the moving direction of expansion and contraction is placed on the lowermost layer cover 104Z, and subsequently, intermediate layer covers 104X,..., 104B are sequentially placed and guided. The chips C that are scattered on the upper surface of the slide cover 104 and do not slide into the chip receiving grooves provided in parallel to the moving direction of the moving body are gradually sent to the contracted end side by the intermediate cover and fixed to the bottom layer cover. Accumulate on 104Z. In some cases, the entire cover 105 of the machine is designed to be compact and the entire cover 105 is fixed to the end surface of the bed 102. When there is no chipping point of chips, the accumulation of chips becomes remarkable.
[0006]
[Problems to be solved by the invention]
As described in the prior art, in the case of a medium to small cutting machine tool, a chip collecting groove is provided on both sides of the table or saddle to move parallel to the moving direction of the table or saddle, or on one side depending on the case. In most cases, removal of chips has been processed by providing a groove only in the groove.
However, unmanned operation through long-time operation and automation is required, and further downsizing of the processing machine is required, and the request is strongly reflected in the design of the entire cover.
[0007]
In particular, the amount of chips generated per unit time has further increased due to recent improvements in cutting performance and speeding up of machine tools. Conventionally, it has been sufficient if an operator removes chips at predetermined time intervals. Even in such a case, it is necessary to frequently perform cleaning along with the change in the production state as described above, which causes a problem that work efficiency is lowered.
Further, when such a cleaning operation is not performed, a large amount of chips are accumulated on the lowermost layer cover 104Z and further pressed between the whole cover 105, the moving body 101, and the slide cover 104Y... 104A. Causes the problem of damaging the slide cover and components.
[0008]
The present invention has been made in view of the above-described problems of the prior art. The object of the present invention is to provide a telescopic cover that protects the guide surface from chips, and to slide the cover by extending and retracting the slide cover. The chips adhering to the top are collected and dropped into a chip receiving groove that intersects with the direction of expansion and contraction, and the chip is inserted by rotation of a roller provided with a spiral member that is inserted into the chip receiving groove and protrudes from the outer peripheral surface. A chip carrying member for transferring the powder along the chip receiving groove and discharging it outside is incorporated, and a driving means for rotating the chip carrying member is provided. In addition, the sensor detects that the slide cover has reached the contracted end, and outputs a signal. By inputting this signal to the driving means, the chip discharging member is rotated to discharge the chips. The present invention intends to provide a chip carrying device.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, a chip discharging apparatus according to claim 1 of the present invention is a chip discharging apparatus for a machine tool, wherein one end is fixed to a machine fixed body and the other end is fixed to a moving body to guide the surface. A slide cover that protects the chip from chips, and a lower cover or an entire cover on the machine fixing body side of the slide cover that crosses the direction in which the slide cover extends and contracts between the lower layer cover and the entire cover. A chip receiving groove for receiving the chip that has fallen by the sliding operation of the slide cover, and the spiral member provided in the chip receiving groove is rotated. A chip carrying member for transferring the chip to the outside of the chip receiving groove, and a driving means for rotationally driving the chip carrying member, and when the slide cover contracts, the chip receiving groove fell down It is intended to drive the chip discharge member for discharging the powder.
[0010]
According to the first aspect of the present invention, the chip receiving groove is provided at the machine-side fixed end of the slide cover, the moving body such as the table moves, the slide cover reaches the contracted end, and the chips on the slide cover are removed. A spiral member that is inserted into the chip receiving groove and projecting to the outer peripheral surface when the chip is dropped into the chip receiving groove is provided to rotate the roller to discharge the chip from the chip receiving groove to the outside. It is a thing. The chip discharge member is rotated in association with the moving range of the moving body to enable efficient chip discharge.
[0011]
The chip discharge device according to claim 2, before Symbol slide cover a sensor that outputs a detected signal that most shrinkage, a predetermined time drives the chip discharge member based on an output signal of the sensor To do.
According to the invention of claim 2, in which the signals of the rotational drive start of the chip discharge member, so as to obtain a sensor which detects that the slide cover is the most shrinkage. By interlocking with the movement of the slide cover, it becomes possible to discharge the chips according to the manner in which the chips are generated.
[0012]
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an explanatory view of the arrangement of a chip discharge member disposed in a chip receiving groove provided on the machine fixed body side of the slide cover, and FIG. 2 is supported by support shafts protruding at both ends and protrudes to the outer peripheral surface. It is a structure explanatory view of the chip discharge member which is provided with a spiral member and is rotationally driven by a built-in drive member.
[0013]
In FIG. 1, a moving body 1 such as a table contacts a sliding surface 2 a of a bed 2 or is guided through a bearing 3 and moves in the left-right direction in the drawing.
One end of the uppermost cover 4 </ b> A of the slide cover 4 is fixed to the moving body 1. The slide cover 4 may be a sheet-like cover that is telescopically configured with a plate-like body or is wound around a roll. This is because it can be configured to expand and contract in either case. The lowermost layer cover 4 </ b> Z of the slide cover 4 is attached to the bed 2 or a cover support 14 fixed to the bed 2. An intermediate layer cover 4Y guided by the lowermost layer cover 4Z attached to the machine stationary body side is placed and guided so as to be slidable in the expansion / contraction movement direction. Subsequently, the intermediate layer covers 4X,..., 4B are sequentially placed and guided.
[0014]
In the embodiment shown in FIG. 1, a chip receiving groove 6 is provided between the lowermost layer cover 4Z and the entire cover 5, and the chip receiving groove 6 is a shaft support 7 or an entire cover attached to the lowermost layer cover 4Z. 5 is attached. The chip receiving groove 6 is a groove opened upward, and the chip C collected at the end by the expansion and contraction operation of the slide cover 4 falls. The chip C having the substantially same outer diameter along the inner peripheral surface of the chip receiving groove 6 and having the spiral protruding member 9 dropped into the groove by the rotation of the outer cylinder 10 formed on the outer periphery of the cylinder is transferred along the groove. A chip carry-out member 8 is provided for discharging out from the groove. The spiral protruding member 9 formed on the outer cylinder 10 of the chip discharging member 8 may be either a plate-like body or a brush-like body.
[0015]
In FIG. 2, the outer cylinder 10 of the chip discharge member 8 is rotatably supported by a support shaft 11 protruding from both ends. The outer cylinder 10 may be rotated by a driving source provided on the machine stationary body.
It is also possible to attach the electric motor 12 inside the outer cylinder 10 and fix it to the support shaft 11 that is fixed, and to energize the outer cylinder 10 by conducting the electric wire 13 from the shaft center. Furthermore, a motor having the outer cylinder 10 as a rotor and the support shaft 11 as a stator can be configured. When this method is employed, the shape of the chip discharge member 8 is reduced in size, and the chip discharge device can be configured in a narrow space. The chip carrying member 8 can be always driven to rotate while the machine is operating, or can be incorporated into a machining program or can be driven to rotate according to the machining program. Here, in order to drive the chip discharge member 8 when the intermediate layer cover 4Y contracts to a predetermined position, a sensor 15 for detecting this is provided.
[0016]
What is detected by the sensor 15 is not limited to the intermediate layer cover 4Y, and may be selected appropriately from the slide cover 4. The sensor 15 can be selected from a proximity switch, a micro switch, and the like. When the slide cover 4 contracts and a detection signal is output from the sensor 15, the motor of the drive member 12 is driven by setting an energization time with a timer. By limiting the energization time, the chip unloading device can be efficiently operated. The chip discharge member 8 is configured as an outer cylinder unit in which the drive member 12 is provided and the spiral protruding member is provided, and a connecting outer cylinder unit in which the spiral protruding member 9 is provided on the outer periphery. Therefore, it is possible to cope with the case where the length of the chip receiving groove 6 is different.
[0017]
Next, the operation of the chip discharging apparatus of the present invention will be described.
In FIG. 1, a moving body 1 such as a table or a saddle is guided by a sliding surface 2 a of a bed 2, and cutting proceeds while the moving body 1 is positioned and controlled in the left-right direction in the drawing. A part of the chips C scattered from a workpiece (not shown) fixed on the movable body 1 adheres to the upper surface of the slide cover 4 configured telescopically. When the moving body 1 moves to the left in the drawing and the slide cover 4 contracts, the chips adhering to the upper surface when the slide cover 4 is extended are sequentially gathered to the left end.
When the moving body 1 moves left and the intermediate layer cover 4Y placed and guided on the lowermost layer cover 4Z reaches the left end of the stroke, this is detected by the sensor 15.
[0018]
In FIG. 2, the signal output from the sensor 15 is received to supply power to the motor of the driving member 12 to rotate the outer cylinder 10 of the chip discharging member 8. A spiral projecting member 9 is provided on the outer peripheral surface. As this member, a brush or a plate material can be used. Since the outer diameter dimension substantially matches the groove diameter of the chip receiving groove 6 , the chips are transferred along the groove by the spiral projecting member 9 as the chip carrying-out member 8 rotates and discharged out of the groove. The By setting the rotation time of the drive member to a fixed time after the sensor 15 detects, the power consumption can be minimized. If the moving body 1 does not need to move left in the program even though the amount of generated chips is large and the amount of adhesion on the slide cover is increased, the moving body 1 moves left during the processing. Thus, it is possible to reduce the influence on the accuracy due to the heat of chips by incorporating a process for temporarily shrinking the slide cover 4 in the program.
[0019]
Next, when the driving member 12 is incorporated in the outer cylinder 10 and the outer cylinder 10 is rotationally driven, or when the driving member 12 and the chip discharging member 8 are configured integrally with the outer cylinder 10 itself as a rotor, the chip discharging device. It can be installed at any time in a narrow place where the whole is compact and installation space is limited. Particularly in the case of the chip discharge member 8 having the latter outer cylinder 10 as a rotor, there is little space by configuring the outer diameter of the outer cylinder 10 to be small or by unitizing the length of the outer cylinder 10. Can be installed.
[0020]
【The invention's effect】
Since the chip discharging apparatus of the present invention is configured as described above, the following effects can be obtained.
According to the first aspect of the present invention, chips that adhere to the slide cover as the slide cover contracts are sequentially gathered toward the chip receiving groove, and then the chips collected at the end of the slide cover are slid. When the cover is most contracted, it falls into the chip receiving groove. Accordingly, there is an effect that the chips are not pressed between the fixed body or the entire cover and the moving body or the slide cover and the slide cover is not damaged.
[0021]
According to the second aspect of the invention, the sensor detects that the slide cover is most contracted, and the outer cylinder of the chip discharge member is rotationally driven by a motor for a certain period of time to transfer the chips out of the chip receiving groove. is doing. Therefore, there is an effect that the use of energy by energizing the power source for carrying out chips is economical.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is an explanatory view of arrangement of a chip carrying member provided in a chip receiving groove provided on a machine fixed body side of a slide cover according to the present invention.
FIG. 2 is a configuration explanatory view of a chip discharging member that is supported by support shafts that are emitted from both ends and in which a fin-like projecting member is spirally provided on an outer cylinder and is rotationally driven by a built-in driving member.
FIG. 3 is an explanatory view showing a state in which chips are accumulated on a conventional slide cover that does not have a chip receiving groove at the extensible end.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Mobile body 2 Bed 3 Bearing 4 Slide cover 4A Uppermost layer cover 4B-4Y Middle layer cover 4Z Lowermost layer cover 5 Whole cover 6 Chip receiving groove 7 Shaft support 8 Chip carrying-out member 9 Helical protrusion member 10 Outer cylinder 11 Support Shaft 12 Drive member (motor) 13 Conductor 14 Cover support C Chip

Claims (2)

A chip unloading device for a machine tool, wherein one end is fixed to a machine fixed body and the other end is fixed to a moving body, and an extendable slide cover that protects the guide surface from chips, and the slide cover on the side of the machine fixed body The chip adhered to the slide cover which is provided on the lowermost layer cover or the entire cover so as to extend and contract in the direction in which the slide cover extends and contracts between the lowermost layer cover and the entire cover is projected by the expansion and contraction operation of the slide cover. A chip receiving groove for receiving the chip that has fallen, a chip carrying member for transferring the chip to the outside of the groove of the chip receiving groove by rotation of a spiral member provided in the chip receiving groove, and And a driving means for rotationally driving the chip discharging member, and driving the chip discharging member for discharging the chip falling into the chip receiving groove when the slide cover contracts. Powder Apparatus. A sensor for outputting a detected signal that pre Symbol slide cover is most shrinkage, switching of claim 1, characterized in that the predetermined time drives the chip discharge member based on an output signal of the sensor Powder unloading device.

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