JPS60180899A - Device for drawing line of development - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The invention relates to an apparatus 4 for drawing a cross-section curve formed by intersecting a cylinder and a cylinder or another cube in one long line, and the cross-sectional shape of the facepiece is If this device, which includes all shapes other than circular shapes, can be used easily by general workers at production sites, it will contribute to the generalization, speed, and accuracy improvement of this type of work. Figure 1A is an example of a case where a pipe 1 used as a fluid passage joins another pipe 2, and the curve 3 formed at the intersection of Figure 1a is
If you expand l+:i1, it becomes 38 at the drawing end.This development line 3A is necessary when cutting pipe l from a material board. death,
The stiffness is joined as shown in Figure 1 A. It is sufficient to make small holes at the desired positions in the tube 2 to serve as fluid passages, but how to shape the tip of the tube is difficult. It is not easy to suitably match Iχ to the outer circumference of 'if2.

In the past, the development line was drawn by drawing a drawing of both tubes according to a certain rule based on the drawing a, and Figure 2 is an example of this drawing. It shows the progress of drawing the @quantity line F of the intersecting curve P in which the circle brooms C and D intersect at 90 degrees, f).

The development line 3A changes to 4 as the shape, thickness, and intersection angle of the two intersecting cylinders 1 and 2 change, so it is difficult to draw the development line using the conventional method each time. The present invention is based on a belt-like member that can be attached to and removed from a cylindrical body, and a belt-shaped member that can be attached to and removed from a cylinder, and a belt-shaped member that can be attached to and removed from a cylinder, and a belt-shaped member that can be attached to and removed from a cylinder in parallel with the facepiece. It is characterized by being made of a curved member that can be retracted and retracted.

Embodiment 1 (Fig. 3) A member 6 in which hollow shafts 5A and 5B are provided in parallel to each other on both sides of a spacing piece 4 as shown in 10. Arrange the required number of pieces horizontally, insert the hollow shaft 5B of the adjacent member 6B between the hollow shafts 5.1 and 5A of the member 6A, and insert the tree body 7 into the hollows of all the members. If you go to step 6, member 6 will be removed as shown in Figure A.
．． 6... are connected laterally, and constitute a band-like member 9 that can be bent around the tree body 7 at the connecting part, the total length 1 of which is equal to the outer circumference of the cylindrical body to which it is attached. The body 7 has the same number of parts as the members 6 that protrude vertically and are attached to the band-like member 9 and can slide freely.The tree body 7 and the hollow shaft MIJJA the curved member 10 with this tree body 7.7... The fit between 5A and 5B is such that the tree body 7 can be pressed with a finger and it will slip, and a bushing 8 made of a material such as Teflon is fitted to the tree body 7 between the hollow shafts 58 and 513 to prevent slippage. However, if the tip &fl1 of the tree body 7 is bent 7A to one side as shown in Figure C, the tip of the tree body 7 will come into contact with the surface of the cylinder body when the band member 9 is attached to the cylinder body. Become.

The usage of this practical example will be explained below (Fig. 4 ABCs)
Lay the pipe U horizontally and place the pipe O close to it above it.The relationship between the two pipes should be the same as the relative position of the straight pipe during actual manufacture./Wrap the strip member 9 around the pipe and attach it. , the fixing means is arbitrary. 2. Slide each tree body 7 downwards, and when the tip hits f24, press 11: and the tips are connected as shown in Figure A &! 2
5 (continued after '+224) is clearly a three-dimensional empty curve), this curve coincides with the intersection curve of the tapping tube and 24, and as mentioned above, the tip of the tree body 7 is drawn. Since it is bent and brought into contact with the surface of the tube, 11!25 can be made to match the intersection curve more accurately. 3. If the strip member 9 is removed from the tube and rolled out on a flat surface, it will look like 10. The development line that connects the tips of the tree body 7 appears. This is the development line that will be bent.
The abrasive board is cut by &12G, and by forming it into a circular tube, a completed suo can be produced.

If you attach a scale line 7B to the m+< tree body 7 shown in Figure 3 C, you can know from the scale line the position ifJ at which you stopped after working the 01 body 7, which is convenient for subsequent work. , Second embodiment (Fig. 5) A rectangular steel plate or a plastic plate having the required length and width and having an appropriate surface slippage is passed through both vertical edges of the width from top to bottom to form an open roll 11. .12 and throat plate 13
The lower end has a protruding shape.This (arrange the throat plates 13 in the required number of pieces, and engage the adjacent Φ1 plates 13A and the open windings 11 and 12 of 1313 so that they can rotate. A belt-shaped member 14 that extends over 13 parts and is bendable as shown in 10, and each side plate 13 can slide against the adjacent Iil plate 13.
, whose total length is equal to the outer circumference of the box body to which it is attached.
Since the content is similar to the one shown in the figure, it will be explained using the same figure.
Wrap the strip member 14 around 23 and install it on 1 plate 1 each evening.
: 3 are pressed down on the lower blades, and stopped at the point where they hit the slit 24. If the strip member 14 is removed from the tube 23 and unfolded on the plane F, a confusing unfolding line connects the lower ends of the respective tab plates 13.

The difference from the previous embodiment is that the throat plate 13 is a component of the band member 14 and at the same time a component of the curved member 15.The above is for the case where each part of the pipe has the same thickness, that is, it is a straight pipe. However, the following is an example in which it is used for tapered pipes of different thicknesses.

Third embodiment (Fig. 6, Irohani) The stacked plate 16 and the hollow @17 and the stacked plate 18 and the hollow shaft 19 are respectively connected to the same body, and the stacked plates 16 and 18 are overlapped and connected with a tightening screw 20. The feature of this embodiment is that it has a member 21 that can be fixed by freely selecting the intersection angle between the center lines of the hollow shafts 17 and 19 (hereinafter referred to as the intersection angle 0). Arrange the required number of hollow shafts horizontally and insert the 11 body 7 between the adjacent hollow shafts 19 and 19 to connect both members 21 and 21 so that they can rotate and the 01 body 7 can slide. whole segment body 2
1 to form the band-shaped section 22. Since this structure is like this, it can be used for a straight pipe as in the first embodiment by changing the intersection angle O of the hollow shaft for each member, but it can also be used for a tapered pipe. The main purpose is to adjust the intersection angle 0 according to the angle of the tapered tube, and the unfolded shape of the band member 22 is l;
It becomes an arc shape as shown in Figure 7, which is shown in Figure 7 when it is wound around a tapered tube and fixed.
When the tapered tube 27 is joined to the tube u, when the strip member 22 is wrapped around the chill bar tube 27 and attached, the strip portion 2 is formed.
The inner surface of the tapered tube 27 is in close contact with the outer periphery of the tapered tube 27 for stability.

The following is the work of pushing down the tree body 7. Work to stop at the point where it hits Suga 24. Work to remove the strip member 22 in this state. The work of developing it on a plane and drawing development lines is the same as the explanation for use in FIG. 4.

As explained above, the strip member is attached to the cylinder, the side body of the curved member and the QE plate are slid, and they are removed from the cylinder and unfolded.

All of the above-mentioned operations are extremely easy and can not be performed only by specific engineers as in the past, but even ordinary workers such as operating machines and welding can easily use the device of the present invention. The expansion line is quickly l1II giant 1+i r +CF
＜You can draw.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of the intersection curve of a cube and its development line, Figure 2
The figure is a plan view showing a conventional method for drawing development lines, Figure 3 is an example of implementing the present invention, Figure 1A is a cutaway front view of the device, and 10 is a partially sectional front view of material A. , Figure C is a front view and side view of the needle bar, Figure 4 is an explanatory diagram of its use, Figure 5 is another embodiment, Figure A is an enlarged perspective view of a part, and Figure 10 is a partially cut away diagram. Overall front view Figure 6 shows yet another embodiment, where Figure A is a partial cross-sectional front view of the member, l0 is a cross-sectional view taken along the line A-A in Figure A, Figure C is a partial front view, and l; is the overall front view. The developed schematic diagram and FIG. 7 are explanatory diagrams for its use. Explanation of symbols 1.2...g 3...Cross curve 3^...Extension 11 FI line 4...Spacing piece 5A, 5B...Mid-year-old axis 6...Member 7...
・Φ1 body 8・・Bush 9・・Band-shaped member lO・・Curve molded member 11.12・・Supplementary volume 13・・Q1 plate 14
...Band shaped part 15...Curve molded member 16 r18...
Stacked plate 17.19...Hollow shaft addition...Tightening screw 21...
Member 22...Band-shaped member Oh, 24...Pipe 25...Three-dimensional curve...Development line 27.Chi/f-C11]
...Pipe E...Cross curve F...Development line...Length of band member 0 ...Intersection angle applicant Masahiro Matsuhara Figure 2←-L '5 Figure J Figure 8 Figure 7 Entrance 6 No. 2 f No. 1 Shi No. i C / ] No. Town No. 1

Claims (1)

[Scope of Claims] / A device for drawing a ridge, comprising a belt-like member that can be attached to and removed from a cylinder, and a curved member that moves forward and backward in parallel with the cylinder! , a device 3 for drawing a rupture line according to claim 1, which is made of an mvS member that uses a face material that can adjust the intersection angle 0 between the envelopes and the curve forming part layer, the tip thereof being on one side; The apparatus for drawing the line for expansion I according to claim 2, which is made of a tree body folded into ≠ the apparatus 4 for drawing the expansion line according to claim 2, which is made of an envelope with one scale.