JPH0230802B2 - PIIRINGUMASHINNOSETSUSAKUSOCHI - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cutting device for a peeling machine that cuts the outer periphery of a bar-shaped material such as a round bar into a predetermined thickness or tapered shape.

1 and 2 are a plan view and a side view showing the overall structure of a peeling machine, in which a feeding feed roller 2, a cutting device 3, and a drawing feed roller 4 are arranged side by side on a bed 1, and a material mount 5 is provided. Materials that have been continuously supplied one by one through a feeding device 6 are fed into a cutting device 3 by a feed roller 2 and cut, and the material cut by the cutting device 3 is pulled out by a feed roller 4. and is discharged to the processed pedestal 8 via the discharge device 7.

The cutting device 3 has a spindle head that moves the material in the axial direction at its center and rotates a cutting tool that moves toward the outer peripheral surface of the material, and a spindle head that moves the material in the axial direction at its center and rotates a cutting tool that moves toward the outer peripheral surface of the material. The material is fed into the spindle head through the collect guide on one side first, and is pulled out from the other side. During this process, the outer periphery of the material is Cut with a cutting tool.

The present invention relates to the above-mentioned cutting device, and the details thereof will be explained below with reference to the drawings.

The cutting device according to the present invention is comprised of a collector guide 9 shown in FIG. 3 and a spindle head 10 shown in FIG. 4.

In FIG. 3, reference numeral 11 denotes an outer sleeve fitted concentrically into the main shaft cylinder 12, and a first collet housing 14 having a tapered portion 13 on the inner periphery of the front end of the outer sleeve is connected to a tightening bolt. 15, and on the other hand, there is a cylinder chamber 1 on the inner peripheral surface of the rear end.
6 is formed. A rack 18 is formed below near the center of the outer circumferential surface of the outer sleeve 11, and is constantly engaged with a pinion 17 built into the main shaft cylinder 12. By rotating the pinion 17, the rack 18 is opened. Although the outer sleeve 11 is configured to slide in the axial direction within the main shaft cylinder 12 through the clamp half nut 19, the outer sleeve 11 is normally fixed integrally to the main shaft cylinder 12 by a clamp half nut 19. Reference numeral 20 denotes an inner sleeve fitted concentrically into the outer sleeve 11, and a piston 21 protruding from the rear outer peripheral surface.
The cylinder chamber 16 of the outer sleeve 11
It is housed in the cylinder chamber 16 and is constantly pressed to the left in the figure with a predetermined pressure by pressure oil acting on the cylinder chamber 16.
Reference numeral 22 designates a first collect chuck which is fixed by screwing a male threaded portion 24 at the rear end into a female threaded portion 23 carved on the inner circumferential surface of the front end of the inner sleeve 20, and has a slotted groove 25 at the front end. For example, the collect piece 26 is formed into three equal parts, and the collect piece 26 is divided into three parts.
A spherical part 27 provided on the outer periphery of the first collector housing 14 is arranged so as to be in constant sliding contact with the taper part 13 of the first collector housing 14, and the taper part 13 of the first collector housing 14 is applied with a predetermined pressure by the inner sleeve 20.
The gripping force is applied by pressing the spherical portion 27. The gripping force of the first collect chuck 22 is set by adjusting the working pressure of the pressure oil in the cylinder chamber 16 so that slippage occurs between the first collect chuck 22 and the material and the material can be easily fed in the axial direction. It is arranged like this. A guide 28 guides the material fed in from the feed roller 2, and is screwed and fixed to the rear end of the inner sleeve 20. The main shaft cylinder 12 has a front end and a rear end rotatably supported by a frame 29 with a swivel structure. That is, the frame 29 is fixed to the inner circumferential surface of the front end of the frame 29 on the inner ring 30a which is fixed to the outer circumferential surface of the front end of the main shaft cylinder 12 and has a spherical outer circumferential sliding surface with the center O of the frame 29 as the center of the spherical surface. A spherical ring 3 fitted with an outer ring 30b having a spherical inner circumferential sliding surface whose spherical center is the center O of
At 0, the front end of the main shaft cylinder 12 is supported by the frame 29, and is fixedly attached to the rear end surface of the frame 29 with a tightening bolt 31 to form a spherical outer peripheral sliding surface with the center O of the frame 29 as the spherical center. The rear end flange of the main shaft cylinder 12 is connected to the frame by a swivel ring 32 in which a second ring 32b having a spherical inner peripheral sliding surface with the center O of the frame 29 as the spherical center is fitted onto the first ring 32a. The rear flange of the main shaft cylinder 12 is normally attached and fixed to the frame 29 by a tightening bolt 33.

Further, in FIG. 4, reference numeral 34 denotes a rotary main shaft cylinder which is rotatably supported by the frame 35 via bearings 36, 36, and the rotary main shaft cylinder 34 is attached to the rear end of the rotary main shaft cylinder.
4, and the rotating main shaft cylinder 3
A movable body 37 that can freely slide with respect to 4 is installed. Reference numeral 38 denotes an outer sleeve that is fitted concentrically into the rotating main shaft cylinder 34, and a second collet housing 40 having a tapered portion 39 on the inner periphery of the rear end is tightened with a tightening bolt 41. On the other hand, there is a rear cylinder chamber 4 inside the front end.
2 and a cylinder 4 with a front cylinder chamber 43
4 are attached and fixed together. An intermediate sleeve 45 is fitted concentrically into the outer sleeve 38, and a piston 46 protruding from the front outer peripheral surface is housed in the rear cylinder chamber 42 of the cylinder 44.
The rear cylinder chamber 42 is constantly pressed to the left with a predetermined pressure by pressure oil acting on the rear cylinder chamber 42. A third collet housing 47 is fitted concentrically into the outer sleeve 38 and disposed at the rear end of the intermediate sleeve 45, and has a tapered portion 48 on the inner periphery of the front end. Reference numeral 49 denotes a second collect chuck whose front end is in contact with the stepped portion of the third collect housing 47, and a slotted groove 50 is provided at the rear end to form a collect piece 51 having a structure divided into three equal parts. A spherical part 52 provided on the outer periphery of the second collect housing 40 is arranged so as to be in constant sliding contact with the tapered part 39 of the second collect housing 40, and is pressed with a predetermined pressure by the intermediate sleeve 45 via the third collect housing 47. It is designed to provide gripping force. 53 is an inner sleeve fitted concentrically into the intermediate sleeve 45, and a piston 54 protruding from the front outer peripheral surface is inserted into the front cylinder chamber 43 of the cylinder 44.
It is housed in the front cylinder chamber 43 and is constantly pressed to the left in the figure with a predetermined pressure by pressure oil acting on the front cylinder chamber 43. Reference numeral 55 denotes a third collect chuck whose front end is in contact with the rear end of the inner sleeve 53. A slot groove 56 is provided at the rear end to form a collect piece 57 having a structure divided into three equal parts, and the outer periphery of the collect piece 57 is formed with a slot groove 56. The provided spherical portion 58 is attached to the third collect housing 4.
7 so as to be in constant sliding contact with the tapered portion 48,
The inner sleeve 53 is designed to apply a gripping force with a predetermined pressure. The gripping force of the second collect chuck 49 and the third collect chuck 55 is such that the gripping force is applied to the inside of the rear cylinder chamber 42 and the front cylinder chamber 43 so that the material slips between the chucks 49 and 55 so that the material can be easily fed in the axial direction. The working pressure of the pressure oil is adjusted and set. 59 is a bearing 6 on the outer periphery of the movable body 37.
0,60, and a female screw portion 62 formed on the inner circumferential surface is screwed into a male screw portion 61 formed on the outer circumferential surface of the slide effecting body 59 on its outer periphery. A rotating body 63 is installed. A worm gear 64 is rotatably housed in a worm housing 65 formed in a part of the frame 35, and is constantly meshed with a gear portion 66 formed on the outer peripheral surface of the rotary body 63. When rotated by a motor or the like, the rotating body 63 rotates due to the interlocking action with the gear part 66 that is always in mesh with the rotating body 63, thereby causing the male threaded part 61 to screw into the female threaded part 62 formed on the inner peripheral surface of the rotating body 63. The slide effecting body 59 moves in the longitudinal direction by the screwing action with the movable body 58 provided via bearings 60, 60.
Both are adapted to move in the longitudinal direction using the rotating main shaft cylinder 34 as a guide. 67 is the rotating main shaft cylinder 34
A cutter head is rotatably mounted on the rear end face of the rotary main shaft cylinder 34, and a cutting tool holder 69 is provided with cutting tools 68 at three locations equally spaced around the circumference, for example, at 120 degrees. The outer peripheral surface 70 of the tool holder 69 is connected to the movable body 37.
The movable body 37 is formed into an inclined surface that tightly fits into the inner circumferential tapered surface 72 of the tapered ring 71 fixed to the rear end surface, and when the movable body 37 slides in the longitudinal direction as described above, the slide is transmitted to the tapered ring 71. The inner circumferential tapered surface 71 of the tapered ring 70
presses the outer circumferential surface 70 of the tool holder 69 in the diametrical direction to move the tool holder 69 in and out, respectively, and removes the tool 6 attached to each tool holder 69.
8 is expanded or contracted to set the diameter for cutting.

As configured above, in the cutting device of the present invention, the third collect chuck 55 is added to the second collect chuck 49 in the spindle head 10, so the material can be supported at two points, thereby almost eliminating chatter of the material. be able to. Therefore, a large amount of cutting can be achieved, significantly improving cutting ability,
This is particularly advantageous when cutting small diameter materials. Further, the cutting device of the present invention has the first collect chuck 22 of the collect guide 9 and the main shaft head 1.
Since the gripping force of the second and third collet chucks 49 and 55 of 0 is pressurized by hydraulic pressure, the gripping force can be freely adjusted, which has the effect of greatly extending the life of the cutting tool 68. .

As explained above, the present invention involves fitting an outer sleeve into the main shaft cylinder which is supported by a frame in a swivel structure so as to be offset about the center of the frame, and an inner sleeve being slidably fitted into the outer sleeve. At the same time, a hydraulic cylinder connected to the inner sleeve is provided at the rear end of the outer sleeve, and a first collector chuck is attached to the front end of the inner sleeve, and the collector is disposed in a first collector housing fixed to the outer sleeve. The outer sleeve is inserted into the shaft guide and the rotating main shaft cylinder rotatably supported on the frame.
An intermediate sleeve is slidably inserted into the outer sleeve, an inner sleeve is slidably inserted into the intermediate sleeve, and two hydraulic cylinders are connected to the intermediate sleeve and the inner sleeve, respectively, at the front end of the outer sleeve. At the same time, a second collector chuck is attached to the rear end of the intermediate sleeve and a second collector is fixedly attached to the outer sleeve.
A third collet chuck is attached to the rear end of the inner sleeve, and a third collet chuck is fixed to the intermediate sleeve. The main spindle head is equipped with a cutter head that can adjust the opposite diameter as appropriate, which prevents chatter of the material, increases the amount of cutting and significantly improves the cutting ability, and increases the gripping force of the collect chuck. It can exhibit excellent features as a cutting device for this type of peeling machine, as it can be freely adjusted, provides an appropriate gripping force, and extends the life of the cutting tool.

[Brief explanation of drawings]

1 and 2 are a plan view and a side view showing the overall structure of a peeling machine. 3 and 4 are drawings showing a cutting device of a peeling machine according to the present invention, in which FIG. 3 is a longitudinal sectional side view of the collet guide, and FIG. 4 is a longitudinal sectional side view of the spindle head. 3...Cutting device, 9...Collection guide, 10
... Spindle head, 11 ... Outer sleeve, 1
2...Main shaft cylinder, 14...First collect housing, 16...Cylinder chamber, 20...Inner sleeve, 21...Piston, 22...First collect chuck, 26...Collection piece, 27...Spherical surface part , 29... Frame, 30... Spherical ring, 3
2... Swivel ring, 34... Rotating main shaft cylinder, 3
5...Frame, 37...Movable body, 38...Outer sleeve, 40...Second collector housing, 42...Rear cylinder chamber, 43...Front cylinder chamber, 44...Cylinder, 45...Intermediate Sleeve, 46... Piston, 47... Third collect housing, 49... Second collect chuck, 51... Collet piece, 52... Spherical part, 53
... Inner sleeve, 54 ... Piston, 55
...Third collect chuck, 57...Collection piece, 58...Spherical part, 59...Slide effecting body,
63... Rotating body, 64... Worm gear, 65
...Worm housing, 67...Cutter head, 68...Bite, 69...Bite holder,
71... Taper ring.

Claims (1)

[Claims] 1. An outer sleeve is fitted into a main shaft cylinder which is supported by a frame in a swivel structure so as to be offset about the center of the frame, and an inner sleeve is slidably fitted into the outer sleeve, and A hydraulic cylinder connected to the inner sleeve is provided at the rear end of the outer sleeve, and a first collet chuck is attached to the front end of the inner sleeve, and the collet guide is disposed in a first collet housing fixed to the outer sleeve. Then, an outer sleeve is fitted into the rotating main shaft cylinder which is rotatably supported on the frame, an intermediate sleeve is slidably fitted into the outer sleeve, and an inner sleeve is slidably fitted into the intermediate sleeve. Two hydraulic cylinders are provided at the front end and are connected to the intermediate sleeve and the inner sleeve, respectively, and a second collector chuck is attached to the rear end of the intermediate sleeve and is disposed in a second collector housing fixed to the outer sleeve. , and a third
disposed within a third collector housing to which a collector chuck is attached and secured to the intermediate sleeve;
1. A cutting device for a peeling machine, characterized in that the main shaft head is provided with a cutter head at the rear end of a rotating main shaft cylinder and can appropriately adjust the diameter of the cutting tool.