JP2003136382A - Chamfering device for end face part of rod member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device capable of chamfering an end face part of a rod member by easy operation without fixing it to a machining device such as a lathe, and even when diameter of the rod member is changed. SOLUTION: This chamfering device for an end face part of a rod member comprises a turning device 8 to support the rod member W to be rotatable in a circumferential direction, a rod member rotating device 19 to rotate the rod member placed on the turning device in the circumferential direction, and a cutting device 12 provided with a rotary grinding wheel 15 movable to advance/retract at a prescribed chamfering angle to an angular part of an end face of the rod member.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chamfering device for an end face of a rod, and more specifically, it cuts an end face corner portion where the peripheral face of the rod and the end face intersect with each other to form a predetermined angle on the outer peripheral portion of the end face of the rod. The present invention relates to a chamfering device for an end face portion of a bar forming an inclined surface.

[0002]

2. Description of the Related Art Conventionally, when chamfering a corner of an end face, that is, forming an inclined surface on an outer peripheral portion of the end face of the bar, first fixing the rod to a lathe or the like and then mounting it. The position of the cutting tool is changed each time according to the diameter of the bar to be cut.

[0003]

As described above, conventionally, it is necessary to mount the bar to be machined first on the lathe and then to change the position setting of the cutting tool each time the material diameter changes. was there. Therefore, it takes a long time to attach and detach the bar material to and from the lathe, and it is necessary to change the position setting of the cutting tool every time the diameter of the material changes.

[0004]

The present invention has been made to solve the above-mentioned conventional problems, and it is not necessary to fix the bar to be machined to a machine such as a lathe, Moreover, it is an object of the present invention to provide a device capable of chamfering a corner of an end face by a simple operation even if the diameter of a bar changes, and its gist is to freely rotate the bar in the circumferential direction. To support the turning device, a bar rotating device for rotating the bar placed on the turning device in the circumferential direction, and a reciprocating device with a predetermined chamfer angle toward the end face corner of the bar. It consists of a rotating grindstone and a cutting device equipped with a vibration detection sensor that detects the vibration when the rotating rod and the rotating grindstone are in contact, and decelerates the rotating grindstone by the detection signal of the vibration detection sensor. Set the end face corner of the bar while moving forward In chamfering device such bar end face, characterized in that a configuration in which only the cutting between.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings. In the figure, reference numeral 1 is a frame assembled from a shaped steel or the like, and a rod to be processed is formed in the frame 1. A transport device 2 that transports the material W in the same direction as the longitudinal direction is horizontally installed. 3 is a motorized conveyor used as the transfer device 2, and a plurality of rollers 5 and 5 arranged in parallel between a pair of parallel frames 4 and 4 are rotated by power, and the rods placed on the rollers 5 are rotated. The material W is conveyed from the inlet side 1A of the gantry 1 toward the outlet side 1B.

Reference numeral 6 is a stopper for stopping the bar W conveyed by the motorized conveyor 3 at a predetermined position so that the bar W can be projected and retracted from the upper surface side of the roller 5 in the vicinity of the outlet side 1B of the motorized conveyor 3. It is provided so that it can be raised and lowered by a cylinder 7. A turning device 8 is a device for supporting the bar W so that it can be rotated in the circumferential direction when the bar W on the motorized conveyor 3 is lifted upward so as to be separated from the roller 5. There is a turning table 9, a plurality of rollers 10 and 10, and a lifting cylinder 11.

The turning table 9 is arranged below the powered conveyor 3 in parallel with the powered conveyor 3, and is provided on the upper surface of the turning table 9 having a length larger than the entire length of the bar W. The rollers 10, 10 mounted so as to be rotatable are arranged at predetermined intervals in the conveying direction of the powered conveyor 3, and the turning table 9 can be lifted and lowered by the cylinder 11. Is configured to be.

Here, as shown in FIG. 3, the roller 10 is composed of two rollers 10 and 10 arranged at a predetermined interval in a direction orthogonal to the conveying direction of the bar W. Thus, the bar W is supported from below and the bar can be freely rotated in the circumferential direction. Further, the roller 10 is arranged between the front and rear rollers 5 and 5 so as not to hinder the operation of the motorized conveyor 3, but the rotation direction of the roller 10 is such that the rod W is rotated around the periphery thereof. Since it rotates in the plane direction, it is a direction orthogonal to the carrying direction of the powered conveyor 3. Then, when the turning table 9 is raised, the upper surface side of each roller 10 is set to project from the upper surface side of the roller 5 of the powered conveyor 3.

Reference numeral 12 is a cutting device for chamfering the corners of the end face.
The same structure is attached to the inlet side 1A and the outlet side 1B of the gantry 1. That is, the cutting device 12 has a feed cylinder 14 mounted at the lower end of a vertical arm 13 so as to be able to move forward and backward at a predetermined chamfering angle, and a rotary grindstone 15 attached to the tip of the feed cylinder 14.
And a vibration detecting sensor 16 mounted near the base of the rotating grindstone 15. The vibration detecting sensor 16 operates to decelerate and advance the rotating grindstone while advancing the end surface of the bar. The corners are cut for a set time. In the figure, 17 is the rotary grindstone 1
A positioning sensor for positioning 5 is movable up and down along the arm 13.

Here, the cutting device 12A on the inlet side 1A of the gantry 1 is mounted so as to be movable back and forth along the carrying direction of the powered conveyor 3. Specifically, the grindstone portion 12A is fixed to an arm 13, and the upper end of the arm 13 is mounted so as to be movable back and forth along a rail 18 provided in parallel with the conveying direction of the powered conveyor 3. Further, the rotary grindstone 15 of the grindstone portion 12A is installed toward the outlet side 1B of the gantry 1, and therefore, on the vertical line passing through the center of the bar W placed on the turning device 8. It is arranged to be located. On the other hand, in the cutting device 12B on the outlet side 1B of the gantry 1, the upper end of the arm 13 is fixed to the upper part of the gantry 1, and the rotary grindstone 15 is installed toward the inlet side 1A of the gantry 1.

Reference numeral 19 denotes a rotating device for the bar W, a rotating roller 20 for rotating the bar W in the circumferential direction by contacting the outer peripheral surface of the bar W placed on the turning device 8, and the rotating roller 20. The rotary roller 21 and the rotary drive unit 21 rotate as shown in FIG.
As shown in FIG. 2, a pair of columns 22 are hung from the top surface of the gantry 1 so as to be spaced apart from each other in the direction orthogonal to the transport direction of the bar W.
It is provided so as to be able to move up and down by an elevating cylinder 24 via an arm 23 that is horizontally mounted.

Reference numeral 25 denotes a material detection sensor attached to the rotation driving unit 21, which detects the rod W and detects the rod W.
1 is lowered to control the rotating roller 20 so as to contact the bar W with a predetermined pressure. 26
Is a material upper limit position detection sensor, which detects the upper surface of the bar W which is also raised by the turning device 8 ascending, and regulates the upper limit position of the bar W raised. Reference numeral 27 in the drawing denotes a material presence / absence detection sensor attached to the motorized conveyor 3 for detecting the presence / absence of the bar material W on the motorized conveyor 3.

Next, the operation of the above apparatus according to the present invention will be described. When the rod W is fed into the motorized conveyor 3 and its tip approaches or passes the material presence / absence detecting sensor 27, the material presence / absence detecting sensor 27 detects this, and the detection signal causes the conveying speed of the motorized conveyor 3 to decrease. Then, when the bar W is slowly conveyed from the inlet side 1A of the gantry 1 toward the outlet side 1B, the cylinder 7 operates and the stopper 6 rises. Then, the front end surface Wa of the conveyed bar W comes into contact with the raised stopper 6,
The bar W stops at a predetermined position. The transport speed and the stop time of the bar W are preset by the control system of the computer in accordance with the working time.

As shown in FIG. 2, after the bar W has stopped at a predetermined position, the cylinder 11 is operated to raise the turning table 9, and the rollers 10 and 10 are used to move the bar W.
Is lifted and separated from the rollers 5 and 5 of the motorized conveyor 3. Then, the upper surface of the bar W moves up to a predetermined position detected by the material upper limit position detection sensor 26, and when it is detected, the turning table 9 stops rising.
Note that these operations are also preset by the control system of the computer.

Next, the cutting device 12A on the inlet side 1A
As the arm advances along the rail 18 toward the rear end surface Wb of the bar W, the positioning sensor 17 descends along the arm 13, and the positioning sensor 17 detects the rear end surface Wb of the bar W. To feed cylinder 14
Is activated, and the rotary grindstone 15 stops at a fixed position (standby position) set by setting the work length. The exit side 1B
The rotary whetstone 15 is also waiting at a predetermined position by the same operation as described above.

When the rising of the turning table 9 is stopped,
After the stand-by positioning of the rotary grindstone 15 on the inlet side 1A is completed and waits at a predetermined fixed position, the rotating device 1
The ascending / descending cylinder 24 of 9 operates to lower the rotary roller 20 and the rotary drive unit 21, respectively. Then, when the descending rotary roller 20 comes into contact with the outer peripheral surface of the bar W at a predetermined pressure, the descending of the rotary roller 20 is stopped, and the roller 1
The bar W supported by 0 and 10 is rotated in a predetermined direction by the rotating roller 20. The rotation speed is determined by the control system when the diameter of the bar W is set.

At the same time when the bar W rotates, the rotary grindstones 15 and 15 on the inlet side 1A and the outlet side 1B of the gantry 1 respectively rotate by the control system, so that the cylinder 14 operates and each rotary grindstone 15 moves. , 15 advance toward the corners C of the front and rear end surfaces Wa, Wb of the bar W, respectively. Then, the rotating grindstones 15 and 15 are brought into light contact with the corners C of the bar W to vibrate, and the rotating grindstones 15 and 1
By operating the vibration detection sensors 16 and 16 mounted on the base of No. 5, the forward speed of the rotary grindstone 15 is decelerated and the front and rear corners C are respectively contacted, and the cutting work of the corners C is simultaneously started. . The cutting time is preset by the control system.

When the cutting time is over, the rotation of the rotary roller 20 is stopped and the rotation of the bar W is stopped, so that the rotary grindstones 15 on the inlet side 1A and the outlet side 1B of the gantry 1 are respectively restored. Retreat to position. After this, the bar W that has been cut is removed to the outside, and there are different methods as described below. First, in the first removing method, when the turning table 9 is lowered while the stopper 6 is still raised and the bar W is placed on the rollers 5 and 5 of the motorized conveyor 3, the bar is ejected by a bouncing device (not shown). After the material W is dispensed in the lateral direction of the transport direction, the motorized conveyor 3 rotates and enters the standby state for the next bar W.

The second excluding method is the above-mentioned powered conveyor 3
Another motorized conveyor 3 is connected to the rear end of the rod W, and when the cutting of the bar W is completed, the motorized conveyor 3 is rotated and the stopper 6 is lowered all the way, and it is confirmed that the stopper 6 is lowered. The rear turning table 9 descends, and the bar W is placed on the motorized conveyor 3 and transferred to the rear motorized conveyor 3 to be removed. Then, when the bar W is completely transferred to the motorized conveyor 3 at the rear portion, the next bar is in a standby state.

[0020]

EFFECTS OF THE INVENTION The chamfering device for the end surface of the bar according to the present invention has the above-described structure, so that it is not necessary to fix the bar to be machined to a machine such as a lathe, and the diameter of the bar is small. Even if the angle changes, the chamfering of the end face corner can be performed with a simple operation. Therefore, without requiring skill
There are various effects such that a large amount of chamfered bar material with high accuracy and uniform quality can be obtained in a short time, and work efficiency is significantly improved.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional front view of a chamfering device for an end face portion of a bar according to the present invention.

FIG. 2 is a vertical cross-sectional front view of the same device during operation.

FIG. 3 is a vertical sectional side view of a main part of the same device.

FIG. 4 is an enlarged view of a main part of the device.

[Explanation of symbols]

2 Conveyor 3 Powered conveyor 5,10 Roller 6 stopper 7, 11, 14, 24 cylinders 8 Turning device 9 turning table 12 Cutting device 15 rotary whetstone 16, 17, 25, 26, 27 sensors 19 Rotating device 20 rotating rollers

Claims (2)

[Claims] 1. A turning device which supports a bar so as to be rotatable in a circumferential direction, a bar rotating device which rotates the bar placed on the turning device in a circumferential direction, and the bar. Of a cutting device equipped with a vibration detecting sensor for detecting vibration at the time of contact between the rotating grindstone and the rotating rod and the rotating grindstone capable of advancing and retreating at a predetermined chamfering angle toward the end face corner portion, A chamfering device for an end face portion of a rod, characterized in that a corner of an end face of the rod is cut for a set time while decelerating and advancing the rotary grindstone according to a detection signal of a vibration detecting sensor. 2. A transporting device for transporting a rod in the same direction as the longitudinal direction and stopping it at a predetermined position, and a turning device for lifting the rod on the transporting device and supporting it so as to be rotatable in the circumferential direction. A rod rotating device for rotating the rod placed on the turning device in a circumferential direction, a rotating grindstone capable of advancing and retreating at a predetermined chamfer angle toward an end face corner portion of the rod, and the rotating rod. A cutting device including a vibration detection sensor that detects vibration when a material comes into contact with the rotary grindstone, and a positioning sensor that is movable in the same direction as the bar material conveying direction. A chamfering device for an end face of a bar, wherein the standby position of the rotary grindstone is determined by a detection signal of the end face of the rod.