JP3056327B2 - Chamfering equipment such as pipes - Google Patents

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 pipes and the like.

[0002]

2. Description of the Related Art In a conventional apparatus of this type, a wire brush rotating at high speed substantially concentrically is applied to an end face of a horizontally laid pipe to perform chamfering.

[0003]

However, although burrs can be removed, the end face is rounded, so when high quality is required, the vicinity of the end face has to be cut again.

An object of the present invention is to provide a chamfering device for a pipe or the like which can solve the above-mentioned problems, can obtain a high-quality end face, and does not require re-cutting.

[0005]

Means for Solving the Problems To solve the above problems, the configuration of the present invention is as follows. That is, a plurality of pipes lying horizontally, etc., a pipe feeder that intermittently sends parallel to each other, is installed near both ends of the pipe being sent by the pipe feeder, while the pipe is stopped, A pipe chuck portion to be gripped from above and below, and installed opposite to both ends of the pipe gripped by the pipe chuck portion,
A bite holder having a chamfering bite at the end face of the pipe is rotatably held around a rotation axis substantially concentric with the center axis of the pipe, and is capable of moving back and forth toward the pipe end face; A cutting drive unit having a cutting motor for moving the tool holder toward and away from the pipe end face; and a rotary motor coupled to the tool holder of the tool holder to rotate the tool holder. A rotating drive unit, wherein the bite holder is a bite holder, a hollow rotary shaft for detachably attaching the bite holder to the tip, and a holder that penetrates a center hole of the rotary shaft and abuts on an end of the bite holder. and removable rod, a detachable operating means for reciprocating the holder detachable rod axially, and a support tube for receiving the rotary shaft, in the detachable operating unit, the ends of the hollow rotary shaft On the outer, removable cylinder via a spline is fitted concentrically, and the detachable cylinder is fitted concentrically within the support tube, the detachable cylinder
(34a) and a piston extending from a piston (34c)
Stone rod (34d) is cylinder support cylinder (34f)
Is rotatably penetrated, and the cylinder support cylinder (34f)
Attached concentrically to the end of the detachable cylinder (34a)
And is rotatably supported by a bracket (34 g).
One end is connected to the rotation drive unit, and the hollow rotation
The support cylinder for receiving the shaft is slidably supported in the axial direction on the frame, and is coupled to a cutting drive unit provided on the frame.

[0006]

[0007]

A plurality of pipes are sent in parallel at the pipe feed section. Then, when they are located just before the chuck section, the pipe feed section stops. Next, the piston cylinder of the lower chuck portion operates to raise the chuck piece, and both ends of the pipe are gripped by the upper chuck portion and the lower chuck portion.

Next, the rotation motor of the rotation drive unit is started,
The rotating shaft of the tool holder rotates. In this state, the cutting motor is driven, the feed screw rod rotates, the feed nut is fed, and the support cylinder approaches the pipe end face. And the byte cuts. When the chamfering is completed, the cutting motor rotates in the reverse direction and the tool holder is retracted.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to an embodiment shown in the drawings.

[0010] First, an outline of the apparatus in FIGS. A pair of left and right first trucks 60, 60 are movable on a base frame 1 extending left and right, and a chain loop conveyor 10 is installed on them. A large number of the pipes A lying horizontally on the conveyors 10, 10 are fed parallel to each other and forward on the same horizontal plane in the front-rear direction (in the direction perpendicular to the paper).

On the base frame 1, the first carriage 60,
The second carriages 70, 70 are installed on the left and right sides of the 60.
The pipe chuck section 20 installed on the second carriage 70 includes:
It is located near both ends of the pipe A being sent by the pipe feeder 10, and is gripped from above and below while the pipe is stopped. The tool holder 30 is installed opposite to both ends of the pipe A gripped by the pipe chuck 20, and a tool holder 31 having a chamfering bit on the end face of the pipe is substantially concentric with the center axis of the pipe. It is rotatably held around the rotation axis and is capable of moving back and forth toward the pipe end face.

The cutting drive section 40 has a cutting motor 46 for moving the cutting tool holding section 30 toward and away from the pipe end face.

The rotation driving section 50 is provided with the cutting tool holding section 30.
And has a rotation motor 52 for rotating it.

The details will be described below. 4 and 5,
A pair of left and right second carriages 70 are movable left and right on the left and right portions of the base frame 1, and the frame 3 is provided thereon. The chuck section 20 is provided on a front surface of the frame 3. That is,
An upper chuck portion 21 is provided in the middle stage of the frame 3, and a lower chuck portion 22 is attached to a lower frame. The lower chuck portion 22 includes an elevating guide 22a, a chuck piece 22b that moves up and down along the same, and a piston cylinder 22c that drives the chuck piece 22b.

The bite holding section 30 is provided on the middle frame of the frame 3 in FIGS. Tool holder 31
Is a known device, and as shown in FIGS.
The first bit 31b for chamfering the outer circumference of the pipe A and the second and third tools 31c, 31
d is detachably attached. The bite holder 31 is detachably attached to the tip of a hollow rotary shaft 32.

A holder attachment / detachment rod 33 for attaching / detaching the bite holder 31 to / from the rotation shaft 32 is provided through a center hole of the rotation shaft 32, and a detachable piston cylinder 34 is connected to an end thereof. That is, in the detachable piston cylinder 34, a spline 32a is provided on the outer periphery near the end of the rotating shaft 32, and a cylinder 34a having a spline 34b meshing with the spline 32a is axially slidably fitted on the outer periphery. As a result, the cylinder 34a is rotated integrally with the rotation shaft 32. A piston rod 34d extending leftward from the piston 34c of the cylinder 34a is a cylinder support tube 34 f
It penetrates freely inside. Also, this cylinder support cylinder 3
4 f is concentrically fixed to an end portion of the cylinder 34a, is rotatably supported by the bracket 34 g.

A spring receiver 35 is fixed near the end of the holder attachment / detachment rod 33, and a compression spring 36 is interposed between the holder and the rotation shaft large-diameter hole 32b.
Urges the bite holder 31 in the direction of coupling to the rotating shaft 32. Rotary shaft 32 is rotatable in the support sleeve 3 8 through a bearing, the support cylinder 3 8 in Frames 3 through a linear bearing (LM guide) 42, slidably supported in the axial direction Is done. The outer surface of the support cylinder 3 8 is fixed an arm 39 (FIG. 4) extending upwardly, below the feed nut member 43
(FIG. 4) .

As shown in FIG . 4 and FIG. 6 , the cutting tool drive unit 40 as a whole is
Reciprocated by That is, the support cylinder 38 is provided with a slide guide 41 provided on the frame 3 via a linear motion bearing 42.
A feed nut (ball screw) 43 fixed to the upper end of the arm 39 is screwed to a feed screw rod (ball screw) 44, and the feed screw rod 44 is decelerated. It is rotated by the cutting motor 46 via the machine 45.

In addition, as shown in FIG.
End of the rotary shaft 32 through a transmission means (timing belt and timing pulley) 51 is rotated by a rotating motor 5 2 installed in the upper part of Frame 3.

In FIG . 2, FIG. 3 and FIG.
Bogies 60 and 70 are body 61 and 71 and wheels 62 and 7 respectively.
2. It comprises drive means 63, 73 (motors 63a, 73a, gears 63b, 73b, rack 63c).

The operation state will be described above. A large number of pipes A are sent in a parallel state by the pipe sending section 10. Then, when they are located immediately before the chuck section 20, the pipe feeding section 10 stops. Next, the piston cylinder 22c of the lower chuck portion 22 operates to operate the chuck piece 2
2b rises, and both ends of the pipe A are gripped by the upper chuck portion 21 and the lower chuck portion 22. This fixes the three pipes simultaneously.

Next, the rotation motor 52 of the rotation drive unit 50 is started, and the rotation shafts 32 of the tool holder 30 of three sets on each of the left and right sides are rotated in total. In this state, the cutting motor 46 is driven, the feed screw rod 44 rotates, the feed nut 43 is fed, and the support cylinder 38 approaches the pipe end face. And byte 3
1b, 31c and 31d are cut. When the chamfering is completed, the cutting motor 46 rotates in the reverse direction and the tool holder 31 moves backward. Next, the chuck unit 20 is released, the pipe feeding unit 10 is driven to feed the pipe, and when the next new pipe comes, the pipe feeding unit 10 is stopped again and the chamfering operation is performed as described above. Will be

Next, when exchanging bytes, the following is performed. Compressed air is supplied to the detachable piston cylinder 34 with the cutting tool holder 30 separated from the pipe end face. That is, when compressed air is supplied via the rotary joint 34h through the flow path 34e of the piston rod 34d, the piston 34c is pushed rightward and pushes the end of the holder attaching / detaching rod 33. The holder attaching / detaching rod 33 moves forward and pushes the end of the tool holder 31. At the same time, the cutting motor 46 rotates in the reverse direction, the support cylinder 38 slides on the outer circumference of the cylinder 34a, and the cutting tool holding unit 30 moves backward. As a result, the cutting tool holder 31 comes out of the rotating shaft 32.

Here, since the upper and lower chuck pieces 21 and 22b are as close as possible to the end face of the pipe, the pipe does not vibrate, and their gripping surfaces are almost semicircular. Therefore, when the pipe A is gripped strongly, the pipe itself is corrected to a perfect circle, and the chamfered surface (line) of the pipe end face is concentric or almost concentric with the pipe. The present invention is also applied to a long body such as a solid round bar.

The present invention is not limited to the examples and embodiments described above, but includes various modifications without departing from the spirit and scope of the claims.

[0026]

According to the configuration of the present invention, a high-quality chamfered end face obtained by cutting a cutting tool can be obtained with high efficiency.
In particular, the hollow rotating shaft for attaching and detaching the tool holder is supported.
Supported by a tube, which can be slid axially on the frame of the device
And is coupled to the cutting drive. Follow
The tool holder in a short distance from the end face of the pipe, etc.
Exchange is easy and quick, and tool holder exchange is automated.
Also becomes easier.

[0027]

[Brief description of the drawings]

FIG. 1 is a schematic front view of one embodiment of the present invention.

FIG. 2 is an enlarged view of a main part (pipe feeder) of FIG.

FIG. 3 is a right side view of FIG. 2;

FIG. 4 is an enlarged view of a main part of FIG. 1;

FIG. 5 is a right side view of FIG.

FIG. 6 is an enlarged vertical cross-sectional view of a right half of a main part (a tool holding part) of FIG. 4;

FIG. 7 is an enlarged vertical cross-sectional view of a left half of a main part (a tool holding part) of FIG. 4;

[Explanation of symbols]

Reference Signs List A pipe 1 base frame 2 rail 3 frame (pair of right and left) 10 pipe feeder (pair of left and right) chain loop conveyor 20 pipe chuck (pair of left and right) (3 pairs of front and rear) 21 upper chuck 22 lower chuck 22a lift guide 22b chuck piece 22c piston cylinder 30 bytes holder (pair) (before and after three sets) 31 tool holder 31a body 31b first byte 31c second byte 31d third byte 32 the rotation shaft 32a spline 32b large diameter hole 33 holder removable bar 34 removably operation means 34a detachable cylinder (rotary) 34b spline 34c piston 34d piston rod 34e passage 34f cylinder supporting cylinder (rotation) 34g bracket 34h rotary joint 35 spring bearing 36 spring 37 linear bearings 38 support cylinder 39 arm 4 Cutting drive unit (pair of left and right) (3 pairs of front and rear) 41 Slide guide 42 Linear motion bearing 43 Feed nut 44 Feed screw rod 45 Reducer 46 Cutting motor 50 Rotation drive unit (1 pair of left and right) (3 pairs of front and rear) 51 Transmission means 52 rotating motor 60 first bogie (pair of left and right) 61 vehicle body 62 wheels 63 driving means 63a motor 63b gear 63c rack 70 second bogie (pair of right and left) 71 vehicle body 72 wheels 73 driving means 73a motor 73b gear

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B23B 5/16 B23B 31/06

Claims (1)

(57) [Claims] 1. A pipe feeder for sending a plurality of horizontally laid pipes and the like intermittently while maintaining parallel to each other, and installed near both ends of the pipe being fed by the pipe feeder;
While the pipe is stopped, a pipe chuck part gripped from above and below, and a bite holder having a chamfering bite at the end face of the pipe installed opposite to both ends of the pipe gripped by the pipe chuck part are provided on the pipe. A bite holding portion rotatably held about a rotation axis substantially concentric with the center axis of the pipe, and capable of moving back and forth toward the pipe end face; and a tool holding section for moving the bite holding section toward and away from the pipe end face. A cutting drive unit having a cutting motor, and a rotation drive unit coupled to the tool holder of the tool holding unit and having a rotating motor to rotate the tool holder. A hollow rotary shaft for detachably attaching the bite holder to a tip thereof, a holder attaching / detaching rod penetrating a center hole of the rotary shaft and abutting on an end of the bite holder; Attaching the detachable rod to reciprocate in the axial direction
A detachable operation means and a support cylinder for receiving the rotating shaft, wherein the detachable operating means includes a detachable cylinder fitted concentrically via a spline to an outer periphery of a distal end of the hollow rotating shaft; The cylinder is fitted concentrically inside the support cylinder and engages with the detachable cylinder (34a).
A piston rod (34) extending from the piston (34c)
d) rotatably penetrates through cylinder support tube (34f)
The cylinder support cylinder (34f) is provided with the detachable cylinder.
-(34a) is fixed concentrically to the end of the bracket (3a).
4g), and is rotatably supported at its end.
A moving part is coupled, the support cylinder receiving the hollow rotary shaft is slidably supported in an axial direction on a frame, and is coupled to a cutting drive unit provided on the frame. Chamfering devices such as pipes.