JPS58186504A - Construction of machining part in edge preparation machine for pipe shaped material - Google Patents

Abstract

PURPOSE:To perform high efficient work of machining, by continuously feeding a cutting tool mounted to a tool holder and decreasing a trouble of the tool broken at edge preparation of a pipe. CONSTITUTION:If assumed a hollow shaft 54 is rotated at 100rpm, a facing plate 61, inner gear 62 and tool holder are also rotated at 100rpm. An outer gear 65 and the second annular flange member 66 are rotated at 98rpm by a difference between number of teeth. A clutch plate 72 is moved to mesh an outer gear 71 of a communicative cylindrical unit 69 to an inner gear 70, then an annular ring 76 results to also rotate at 68rpm. That is, a tool 83 is rotated with 2rpm speed difference from the tool holder 80, and the tool 83 can be continuously fed toward the axial line of the shaft 54.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a processing machine capable of beveling a tubular material without damaging the cutting tool, and particularly to the structure of its processing section.

As previously disclosed in Japanese Patent Application No. 55-27671, the present inventor has developed a beveling machine that can automatically bevel not only straight pipes but also curved pipes. As shown in Figures 1 to 3 of the attached drawings, this is the holding part (
A), a processed part (B) arranged opposite to this, and a holding part (
A) and a detachable fixing part (C), and the holding part (
A) is made such that a pair of side plates (3) are movable along a guide (2) in a direction opposite to the processed part (B), and the folded plate (3)
A fixing plate (
4) and a movable plate +51 for sandwiching the fixed part (C) between the fixed plate and the processed part (B) of the holding part (A).
A support piece (6) for positioning the fixing part in the height direction is provided at the inner end of the side, and a set of block clamping bodies (7) in which the fixing part (C) is connected in a surface restraint state with a connecting rod. It is composed of

The machining part (B) has a first inner cylinder (8) rotatably supported by a bearing within the machine casing (11).The outer end of this first inner cylinder (8) is equipped with a beveling tool and a parting tool. An appropriate number of tool holders (10) are provided by attaching tools (11) for cutting tools and chamfering tools.Each tool holder OI is equipped with a tool feed mechanism in the radial direction, and the feeding mechanism has the following configuration. The vertical feed rank (12) is rotated to the tool holder O1, and the horizontal feed rack (13) is attached to the second inner cylinder (
9), and both racks (12) and (1
3) a gear (14) pivotally supported between the first inner cylinder (8),
(+5) and so on. The second inner cylinder (9) is connected to the first inner cylinder (
8) Provided to be able to freely slide in the axial direction under rotation via the inner ni+- (16) and $-a (17). Furthermore, the second inner cylinder (9)
One end is pushed by a screw ring (18) screwed onto the machine casing (1), and a ratchet mechanism is attached to this screw ring (18). This ratchet mechanism is the mechanical housing (1)
An annular # (19) of a threaded ring (18) connected to a cylinder device piston rod (not shown) whose proximal end is pivotally connected to the piston rod.
It consists of a ratchet holder attached to a ring (20) rotatably fitted to the holder, and a ratchet wheel (21) attached to a screw IJi (18) with which a ratchet pivotally supported by the holder engages. Therefore, due to the intermittent rotation of the ratchet throat wheel (21), the I82 inner cylinder (8) moves forward under rotation while compressing the spring (22).
By the operation of the cutting tool feeding mechanism (D), the cutting tools (26) attached to the cutting tool holder a@ are simultaneously sent in the radial direction, and these tools move the machining part (L) of the pipe (M).
In the case of a zero-bent pipe that can be machined with the required beveling, the processing part (L) is provided at the straight part where the bend begins, so the straight part is inserted into the wlJz inner cylinder (9). Therefore, there is no problem during processing, and automatic bevel processing of bent pipes is made possible.

However, in the structure of the processing section (B), the ranks (12, 13) and gears (14, 15) are subjected to the intermittent rotation of the ratchet wheel (21) driven by the cylinder device, so The blade is subject to discontinuous loads and is prone to breakage, requiring frequent replacement of the cutting tool, which reduces the efficiency of beveling work. .

The present invention solves the drawbacks of the prior art, namely, by making the feeding of the cutting tool attached to the cutting tool holder continuous, the cutting tool breakage accident in pipe beveling is reduced as much as possible. The present invention also provides a structure for the processing section of a beveling machine that can improve the efficiency of pipe beveling operations.

The present invention consists of a) a housing forming an annular body; a) a hollow shaft with openings at both ends that is rotatably mounted in the housing; c) a drawing board that is integrally mounted on one end of the hollow shaft; and 2) a coplanar board. A tool holder that is attached to the side in the radial direction, e) A tool that cannot be rotated but is attached to the tool holder so that it can move forward and backward in the radial direction, f) A gear for piping that is installed on the head of the tool, g) an internal gear mounted concentrically with the hollow shaft on the other side of the face plate, h) an eccentric external gear that meshes with at least the same internal gear and whose center of the circle is located eccentrically from the hollow axis; A working part structure in a beveling machine for a tubular material, comprising: a differential-wheel mechanism having a circumferential gear that is engageably connected and meshes with a cutting tool feeding gear on an annular circumferential surface on the L side; This is related to.

The structure of the processed portion according to the present invention will be specifically explained below with reference to an embodiment shown in the accompanying drawings, FIGS. 4 to 17.

In Fig. 5, (51) is a housing installed horizontally and in a fixed state, and a hollow shaft (51) with both ends open is inserted into the housing (51) via bearings (52) and (53).
4) are attached concentrically and rotatably. The housing (51) also has a hollow shaft deceleration rotation mechanism built therein, and in this embodiment, the deceleration rotation mechanism is located below the hollow shaft (54) and perpendicular to the axis of the hollow shaft (54). A horizontal rotating shaft (55) is provided, and one end of the rotating shaft (55) is connected to a required drive source (56) via a force/knob ring (56).
For example, a worm (58) is fixed to the middle of the horizontal rotating shaft (55), and the worm (58) is fixed to the outer periphery of the hollow shaft (54) approximately at the center. The worm wheel (59) meshes with the worm wheel (59). With the above configuration, the horizontal rotation axis (
55) is rotated by the hollow shaft (54) at a required reduction ratio, and if the object to be cut is inserted into the hollow shaft (54), the hollow shaft (54) rotates integrally.

Further, the cut-1 side of the housing (51) is formed with a first annular flange body (60) having an abbreviated letter shape *W,
Horizontal cylindrical portion (60a) of the first annular flange body (60)
The outer circumferential circle has an axis that is eccentric with respect to the axis of the hollow shaft (54) by a constant eccentricity te+.

A face plate (61) is fixed to the cutting side end of the hollow shaft i11, and an internal gear (62) having inner teeth carved on the inner circumferential surface of the protrusion is fixed to the outermost peripheral surface of the flange of the same plate (61). ing. Furthermore, the face plate (61) has a cutting tool holder (80) attached to the side surface of the cutting tool.
80) has a cutting edge pointing toward the axis of the hollow shaft (54) and a helical gear (82) on the head) (8)
3) is slidably held. On the other hand, a bearing (
64), a second annular flange body (66) having an external gear (65) is rotatably attached to the outermost flange surface, and the eccentric external gear (65) is connected to the internal gear (62) as required. (in this embodiment, for example, 10
0:98). Further, the second annular flange body (66) has a pinion shaft (67) fixed to its inner surface that extends in the axial direction. On the other hand, the intermediate pinion shaft (67) meshes with an external gear formed on the outer circumferential surface of the intermediate connecting cylinder (69) via a bearing (68) on the outer circumferential surface of the horizontal cylindrical part of the first annular flange body (6o). are doing. The intermediate connecting cylinder (69) is
It has an external gear (71) that meshes with an internal gear (70) that is freely movable in the axial direction. Further, the intermediate connecting cylinder (6
9) has a circular gear (70) and an external gear (7) in its horizontal cylindrical part.
1) A clutch plate (72) that can be freely attached and detached is attached to be rotatable and movable in the axial direction. In other words, the clutch plate (72) has the inner wheel (71) integrally attached to one side, and the same clutch plate (72) to the other side.
- of the double actuating cylinder (73) attached to the housing to move the
An operating rod (73a) is connected thereto.

With the above configuration, the operation of the cylinder (73) is controlled by the internal gear (7).
0) and the external gear (71). Note that (74) is a guide cylinder that is attached to the other end of the housing (1) and allows smooth movement of the clutch plate (72). The internal gear (70) also has an annular ring (
76) are integrally fixed with connecting bolts (75), and the annular ring (76) has a circumferential gear (76a) carved on its annular side surface on the cutting tool side. This circumferential gear (76a) and the helical gear (82) provided on the head of the aforementioned cutting tool (8) mesh with each other. At this time, the cutting tool (81) has a rectangular cross section, and a helical gear (82) is formed with a thread that meshes with an internal gear carved on the inner periphery of the helical gear (82) at its corner.
The rotation of 82) will result in a radial movement of the pi (81), ie an axial movement of the hollow shaft (54).

Next, a cutting tool (8
I will explain the progress and retreat of 1).

Assume that the hollow shaft (54) is now rotating at 1100 rpm.

In this case, as the hollow shaft (54) rotates, the drawing board (61),
The internal gear (62) and tool holder (80) also have the same speed (
100 rpm). The internal gear (62) and the external gear (65) mesh eccentrically, and since both gears have a difference in the number of teeth, the external gear (65) and the second annular flange body (66) are 98 r p m. It will rotate at .

From this, the binion shaft (67) and intermediate connecting cylinder (69) attached to the second annular flange body (66) are also 98r p
It will rotate at m. At this time, the cylinder (73
) to move the clutch plate (72) and move the external gear (71) and internal gear (7) of the connecting cylinder (69) as shown in Figure 15.
0), the internal gear (70) and the annular ring (7
6) and the circumferential gear (76a) will also rotate at 98 rpm. As mentioned above, the tool holder (80
) is rotating at 1100 rpm, so the helical gear (82), that is, the bite (83), is the difference, that is, 2
Rotate at rpm, connect pi) (&3) to hollow shaft (54)
This allows continuous feeding of the bevel of the workpiece without causing fluctuations in the load.

In addition, after cutting the bevel, if the cylinder (73) is driven to maintain the mesh between the internal gear (70) and external gear (71), the hollow shaft (
54) rotates, and feeding of the tool holder stops.

As described above, according to the present invention, since the cutting tools can be sent continuously, breakage of the cutting tools can be effectively prevented.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a conventional beveling machine, Fig. 2 is a side view of the same, Fig. 3 is an enlarged longitudinal cross-sectional view of the machining section of the same machine, and Fig. 4 is a beveling machine according to the present invention. , FIG. 5 is an enlarged vertical cross-sectional view of the main part of the processing section of the same processing machine, FIG. 6 is a partially cutaway view taken along the line 1-I in FIG. 5, and FIG. ■It is a view taken along arrow lines. Patent applicant Okazaki Kogyo Co., Ltd. Agent Ito Okimo (and 2 others)

Claims (1)

[Claims] 1. A) A housing forming an annular body; Mouth) A hollow shaft with openings at both ends rotatably mounted within the housing; C) A drawing board integrally mounted on one end of the hollow shaft; ) A tool holder that is attached radially to one side of the same plate, e) A tool that cannot be rotated but is attached to the tool holder so that it can move forward and backward in the radial direction, f) A gear for feeding the tool that is installed on the head of the tool, g) An internal gear mounted concentrically with the hollow shaft on the other side of the face plate; h) An internal gear that meshes with at least the same internal gear and has the center of the circle eccentrically from the hollow axis. A processing unit in a beveling machine for a tubular material, comprising: a differential gear mechanism having a circumferential wheel that is engageably connected to a gear and meshes with a cutting tool feeding gear at an annular surface on the L side; structure.