JPH0540881Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a pipe processing machine, and more specifically, it is a pipe processing machine that can be fixed to a pipe to cut the pipe and create bevels on the end surface of the pipe. Concerning a portable tube processing machine.

[Prior art] A portable pipe processing machine is, for example,
It is known from the publication no.

That is, according to the known technique, the processing machine itself is fixed to the pipe as the workpiece, and the tool rest can be selected to rotate and feed manually or automatically in the pipe axis direction and radial direction, and The automatic feed can be easily switched between forward and reverse by operating the switching lever.

However, in the known technique, when operating both directions at the same time in the switching operation between axial feed and radial feed using the switching lever, the forward and reverse directions are selectively selected, for example, the axial feed It is not possible to achieve a feed in which the direction is positive and the radial direction is reversed. In addition, a feed pawl wheel (feed gear),
The so-called switching mechanism, which consists of a pawl, is hermetically housed in a rotating gear box, so it is impossible to change the feed pitch by replacing the feed pawl wheel. It will be device specific.

[Purpose of the invention] The invention was created in view of the above circumstances,
It is an object of the present invention to provide a portable pipe processing machine with a mechanism that allows the axial feed and radial feed of the tool rest to be freely selected, increases the degree of freedom in the cutting direction, and furthermore allows the feed pitch to be easily changed. purpose. Furthermore, it is an object of the present invention to enable automatic feeding of a cutter using a simple feed screw mechanism without using a complicated mechanism compared to conventional techniques.

That is, the present invention attempts to utilize the cutting mechanism to perform multiple functions such as cutting, cutting, and beveling.

[Configuration of the invention] For this reason, the portable tube processing machine of the invention adopts the following configuration (technical means). That is, a main body frame 1 is detachably fixed to the outer circumferential surface of a pipe P, which is a workpiece; Annular gear 1 rotatably provided around P
5; installed in a tool post guide member 20 fixed to the annular gear 15 facing each other with a predetermined interval, and slidably attached to the tool post guide member 20 in the axial direction of the pipe P; axial sliding body 2
8; a tool rest 35 that moves in conjunction with the axial sliding body 28 and is slidably held by the axial sliding body 28 in the radial direction; a radial sliding body 38 that is slidably mounted on the axially sliding body 38 and allows the turret 35 to slide in the tube axis direction and moves the turret 35 in the radial direction; an axial feed threaded rod 30 having one end screwed in the radial direction and an axial feed gear 31 removably attached to the other end, and capable of only rotating; a radial feed threaded rod 40 which is screwed into the body frame 1 and has a radial feed gear 41 removably attached to the other end and which can only rotate; 31 and the radial feed gear 4
1. A portable tube processing machine characterized by a feed notch 55 provided on the tooth surface of the feed gear 31, 41 so as to be able to come into contact with and separate from the tooth surface thereof, and facing each other across the center of each feed gear 31, 41.

In the above configuration, the feed notch that approaches and leaves the axial feed gear is composed of an axial forward feed kicker and an axial reverse feed kicker, and the feed notch that comes into contact with and leaves the radial feed gear includes a radial forward feed kicker and a radial reverse feed kicker. It consists of a feeder.

Furthermore, the respective feed notches may be provided at the same location on the main body frame, or may be provided separately at appropriate intervals in the circumferential direction.

[Operation] Cutting is performed by operating the radial forward feed cutter, and end face processing is performed by operating either the radial forward feed or reverse feed cutter.

Peripheral surface machining, in which the outer circumference of the tube is cut in parallel, is performed by operating the axial feed cutter.

Beveling is performed by appropriately combining the operations of the radial feed puncher and the axial feed puncher. Furthermore, when changing the taper angle, it is done by appropriately replacing feed gears with different pitches.

[Effects of the Invention] The portable processing machine of the present invention works as described above, and therefore has the following unique effects.

Since the main components are a sliding mechanism and a screw feeding mechanism, the mechanism is simple, and therefore there are few failures and it can withstand long-term use.

Cutting, end face machining, circumferential face machining, and bevel machining can be performed without changing attachments each time.
A variety of processing methods can be implemented using only this processing machine.

In beveling, the shape of the taper angle of the bevel can be freely obtained by selecting an appropriate combination of forward feed and reverse feed cutters.

In addition to the above, the inclination angle of the groove can be freely selected by appropriately replacing the feed gear, and the operation is easy.

[Example] Hereinafter, an example of the portable tube processing machine of the present invention will be described based on the drawings.

1 to 8 show one embodiment thereof. 1 to 3 show the feed section of the tool rest, which is the main part of this processing machine, FIG. 4 shows the structure of the kicker mechanism, and FIGS. 5 and 6 show the overall view.

Overall structure This processing machine consists of a main body frame 1, an annular gear 15,
It consists of the main parts of the tool post feed mechanism H and the kicker mechanism 50.

First, the overall structure will be explained.

In the figure, P is a pipe, and Q is a protrusion on the outer periphery of the pipe P.

1 is a main body frame fixed to the pipe P. The main frame 1 has an annular shape so as to be fixed from the outer periphery of the pipe P. In addition, in order to facilitate handling, this embodiment has a structure that can be divided into two halves (1A, 1B), and the flanges 2 at the ends are fixed to each other with bolts or the like as appropriate. Assemble into one piece by means. Furthermore, it may be a single piece without being divided.

A plurality of set bolts 3 are screwed into the outer periphery of the main body frame 1 in the radial direction. By rotating the set bolt 3, the main body frame 1 is centered and fixed to the pipe P. In order to fix the main body frame 1 to the pipe P, other well-known means may be used instead of this method. For example, there is one that is fixed using a hydraulic cylinder provided radially from the outer circumference of the pipe. Any fixing means may be used as long as it fixes the processing machine to the tube.

On the main body frame 1 is an annular gear 1 to be described later.
A power pinion 5 and a manual pinion 7 driving the
will be installed.

A flexible shaft J is connected to the end of the pinion shaft 6 of the power pinion 5, and the power pinion 5 is driven by an external drive source. Alternatively, the electric motor is coupled via a speed reducer and clutch (not shown). If it is a low-speed electric motor, a speed reducer is not necessarily required and may be directly connected.

The manual pinion 7 has a handle K connected to the end of its pinion shaft 8, and is driven by turning the handle. The manual pinion 7 is used for adjustment when setting up the processing machine.

An annular wall plate 10 is integrally protruded from the outer periphery of the main body frame 1. An annular gear metal 12 is fixed to the side peripheral surface of this annular wall plate 10 with bolts 13. An annular gear 15, which will be described later, is rotatably attached via the annular gear metal 12. The annular gear metal 12 is made of a bearing material such as a copper alloy, white metal, or a sintered alloy impregnated with lubricating oil.

15 is an annular gear rotatably attached to the annular gear metal 12.

Both the annular gear 15 and the annular gear metal 12 are formed in half like the main body frame 1. Thus, the annular gear 15 is engaged with the aforementioned pinions 5 and 7 and is driven to rotate.

A mounting plate 16 is fixed to the side surface of the annular gear 15 with bolts 17. The mounting plate 16
The turret feed mechanism H, which is the main part of this processing machine, is attached to.

The turret feed mechanism H has turret guide members 20 at both ends of the mounting plate 16.
are fixed opposite to each other in the axial direction of the annular gear 15. The guide member 20 consists of two parts and is integrated by an assembly bolt 21. The guide member 2
A groove 20a is formed on the opposing inner sides of the grooves 0. 22 is a bolt 2 attached to the end of one guide member 20.
It is a flange fixed with 3.

Reference numeral 25 denotes a gate-shaped member placed on the upper surface of the opposing tool post guide member 20 and fixed with a bolt 26, on which a radial feed screw rod 40, which will be described later, is pivotally supported.

Reference numeral 28 denotes an axial sliding body provided between the two turret guide members 20, and the axial sliding body 28 extends its outer protrusion 28a into the groove 20a of the guide member 20.
It is fitted into the annular gear 15 and is slidable in the axial direction of the annular gear 15, that is, in the tube axis direction. The axial sliding body 28 consists of two parts which are joined together by an assembly bolt 29. 28b is a recess.

The direction sliding body 28 has a screw hole 28 in the tube axis direction.
c is screwed into the screw hole 28c, and an axial feed screw rod 30 is screwed into the screw hole 28c to feed the axial slider 28 in the axial direction. A feed gear 31 is removably attached to the outer end of the axial feed screw rod 30. 30a is a rotating head, 32 is a nut, and 33 is a mounting body.

35 is a tool rest, with protrusions 35a on both sides.
It is held within the recess 28b of the axial sliding body 28 and is provided to be slidable in the radial direction. The tool rest 35 has a cutting tool mounting hole 35b drilled in the radial direction for mounting a cutting tool, and the lid body 35A.
is closed with a bolt (not shown).
The cutting tool I, which has a tip shape corresponding to the machining shape, is attached to the attachment hole 35b and fixed with a bolt 36 that is screwed into a bolt hole drilled in the lid 35A. Furthermore, a sliding hole 35c for slidingly holding a radial sliding body 38 (to be described later) is bored through the arm in the axial direction in the outer part of the tool post 35.

38 is an L-shaped radial sliding body,
It is held via appropriate engagement means (for example, dovetail groove engagement) so as to be slidable only in the radial direction with respect to the mounting plate 16. And the radial sliding body 38
One horizontal portion 38A of the tool rest 35 is slidably fitted into the sliding hole 35c of the tool rest 35.

A screw hole 38a is formed in the other vertical portion 38B of the radial sliding body 38 in the radial direction.
A threaded portion of a radial feed screw rod 40 is screwed into the screw hole 38a, and its outer portion is rotatably inserted into the hole 25a of the portal member 25. A feed gear 41 is removably attached to the other end of the radial feed screw rod 40. 40a is a rotating head, 42 is a nut, and 43 is a mounting body.

When changing the axial feed pitch, use feed gear 3.
1, and when changing the radial feed pitch, the feed gear 41 is replaced with a separately prepared feed gear.

Kicker Mechanism The kicker 50 is attached to a kicker frame 51 whose base is fixed to the wall plate 10.

The kicker frame 51 is provided with arms 51a, 51b, 51c, and 51d that respectively protrude inwardly.

The kickers 50 each include a radial forward feeder 50A, a radial reverse feeder 50B, an axial forward feeder 50C, and an axial reverse feeder 50D.
can be attached to the arm of

Each of the kickers 50 has the same configuration.

A feed knob body 53 is inserted through a mounting hole 52 formed in an arm of a kicker frame 51 and is fixed with a fixing nut 54. Feed knob body 53
, the radial feed notch 55 is connected to the annular gear 15.
is provided in the axial direction. The radial feed knob 55 is constantly biased by a coil spring 56 so as to be pulled in the axial direction. The coil spring 56 is held between the radial feed notch 55 and the spring receiver 57. The tip 55a of the radial feed knob 55 is connected to the feed gear 41.
It is shaped like a wedge to make it easier to drive the tooth surface. A feed knob pin 58 is fixed in the diametrical direction in front of the tip. The feed knob pin 58 is inserted into a diametrical groove 53a provided in the feed knob body 53. There are two types of grooves, which have different depths in the axial direction of the radial feed notch 55 and are perpendicular to each other. When rotating the gear 41, that is, when cutting the cutting tool in the radial direction, the radial feed notch 55 is pushed out.
It can be retracted when rotation is not required, that is, when the cutting tool does not cut in the radial direction.

The axial feed notches 55, 55 are connected to the annular gear 1.
The structure and operation of the kicker 50 are the same as those of the radial feed notch 55 described above.

When starting cutting or setting the cutting tool in a predetermined position during cutting, stop the rotation of the processing machine and turn the axial feed screw rod 30 and the radial feed screw rod 40 in a stopped state. This is done by connecting a manual handle to the heads 30a, 40a and rotating each feed screw rod 30, 40 in a predetermined direction.

The procedure for using the processing machine of this embodiment will be explained below.

Installing this processing machine Fit this processing machine onto the predetermined position of the pipe P to be cut,
Turn the set bolt 3 to approximately center the main body frame 1. Using an inner diameter pass (tool), check the entire circumference between the pipe P to be cut, the inner circumferential wall of the main body frame 1, and the outer circumference of the pipe for accurate centering.

Set up the reducer, flexible shaft (not available for direct connection type), and electric motor.

Cutting/end face processing Cutting and end face processing are performed by operating in the following order.

(1) Manually operate the axial feed screw rod 30 and the radial feed screw rod 40 to set the cutting tool in a predetermined position.

(2) Turn on the electric motor and rotate it in the specified direction.

(3) Engage the reducer clutch and rotate the annular gear 5.

(4) Turn the feed knob 55 to push the radial forward feed kicker 50A so as to drive the radial feed gear 41.

(5) Every time the annular gear 15 rotates once, the feed knob 55 rotates the radial feed gear 41 by a predetermined angle so that it is caught.

(6) The radial feed screw rod 40 is rotated, and the radial sliding body 38 moves in the radial direction by an amount multiplied by the pitch of the radial feed screw rod 40 by the rotation angle.

(7) Turret 3 engaged with radial sliding body 38
5 also moves in the radial direction at the same time. A cutting tool fixed to the tool post 35 performs cutting in the radial direction of the tube (see FIG. 9).

Whether processing a radial surface such as a tube end surface, ie, a flange, or cutting, the same operation can be performed by simply changing the shape of the tip of the cutting tool (see Fig. 10).

Peripheral Surface Machining When machining the outer periphery of a pipe, perform the following operations.

Of the above operations, (1) to (3) are the same.

(4) Feed knob 5 of axial forward feed kicker 50C
Turn 5 and push out.

(5) Every time the annular gear 15 rotates once, the feed knob 55 hooks the shaft feed gear 31 and rotates it intermittently by a predetermined angle.

(6) The shaft feed gear 31 is rotated by the feed screw rod 30.
The axial sliding body 28 is transmitted to the annular gear 15.
move in the axial direction.

(7) The tool rest 35 on the axial tool slider 28 also moves at the same time, and cutting is performed using a cutting tool fixed to the tool rest 35 (see Fig. 11).

(8) Next, turn the feed knob 55 of the axial reverse feed kicker 50D, and
The feed notch 55 on the opposite side is pushed out, the shaft feed gear 31 is rotated in the opposite direction, and the cutting tool performs a return movement that is the opposite of the forward movement.

Bevel processing In order to make it easier to weld the end surface of a tube, it is processed by adding a taper in the direction of the tube axis, so-called bevel processing. A tapered groove can also be formed in the cutting, end face, and circumferential face processes described above. When performing these processes, a general-forming tool is used to perform the desired process (see Figure 12). However, this processing requires the preparation of various tools. However, if you use the method below, you can perform beveling without using a forming tool.

Of the above operations, (1) to (3) are the same.

(4) When the annular gear 15 starts rotating, it simultaneously pushes out the feed notch 55 of the axial feed kicker 50A and the feed notch 55 of the radial feed kicker 50C.

(5) The tool post 35 moves using the same transmission system as in the cutting process and end face process. At the same time, axial feed is applied in the same way as peripheral surface machining.

(5) The radial feed and the axial feed are combined, and the cutting tool of the tool post 35 performs bevel processing at a predetermined angle (see Fig. 13).

The beveling angle is determined by the radial feed gear 41.
Since this is determined by the rotation angle of the axial feed gear 31, the groove angle can be changed by changing the pitch between the radial feed gear 41 and the axial feed gear 31. Further, the amount of protrusion of the feed notch 55 can also be adjusted. That is, the feed knob main body 53 of the kicker base is adjusted so as to predefine the amount of protrusion.
It is also good to prepare grooves of various depths.

[Brief explanation of the drawing]

The drawings show an embodiment of the portable pipe processing machine of the present invention, and FIG. 1 is a longitudinal cross-sectional view of the main parts of the processing machine (cross-sectional view taken along line C-C in FIG. 2), and FIG. Figure 3 is a view in the Y direction of Figure 1, Figure 4 is a detailed view of the kicker mechanism, Figure 5 is an overall front view of the processing machine, Figure 6 is Figure 5. FIG. 7 is a sectional view taken along the - line in FIG. 5, FIG. 8 is a sectional view taken along the - line in FIG. FIG. 1... Body frame, 15... Annular gear, 2
0... Turret guide member, 28... Axial sliding member, 30... Axial feed screw rod, 31... Axial feed gear, 35... Turret post, 38... Radial sliding body, 40... ...Radial direction feed screw rod, 41...
Radial feed gear, 55...Feed knob.

Claims (1)

[Claims for Utility Model Registration] A main body frame 1 that is detachably fixed to the outer peripheral surface of a pipe P that is a workpiece; an annular gear 15 rotatably provided around the pipe P so that Axial sliding body 28 slidably attached to the table guide member 20 in the axial direction of the pipe P
and; a tool rest 35 that moves in conjunction with the axial sliding body 28 and is slidably held by the axial sliding body 28 in the radial direction; a radial slider 38 that is slidably attached and allows the tool rest 35 to slide in the tube axis direction and moves the tool rest 35 in the radial direction; an axial feed threaded rod 30 having one end screwed therein, an axial feed gear 31 removably attached to the other end, and rotatable only; one end screwed into the radial sliding body 38 in the radial direction; and a radial feed threaded rod 40 having a radial feed gear 41 removably attached to the other end and capable of only rotating; A feed notch 55 is provided on the tooth surface of the radial feed gear 41 so as to be able to come into contact with and separate from the feed gear 41, and facing each other across the center of each feed gear 31, 41. Transportable tube processing machine.