JPH03110007A - Transverse working device and transverse working method for pipe member - Google Patents

Abstract

PURPOSE:To facilitate a recombination and an adjustment work with the structure being simple, by abutting to the internal face tapered part of the friction ring whose inner diameter becomes larger toward the inlet side and driving a roller with its rotation by the friction force with the friction ring. CONSTITUTION:When a pipe member 13 is worked between plural rollers 3 whose roller shafts are twisted in the peripheral direction around a pass line 1, the pipe 13 is advanced with its rotating and the surface thereof is spirally worked. At this time, the more the number of a roller is, the lenienter the working is and irrationality is eliminated, and the working of the material difficult to work and a double layer pipe material becomes easy. On the driving of the case of the roller number becoming more than four pieces, the roller is not be driven one by one but all of the rollers are simultaneously driven by one friction ring 5.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention is applicable to a horizontal processing device for pipes or bars capable of deforming inorganic materials, polymeric materials, metal materials, etc. before firing, general pipe materials, composite pipe materials, etc. It is used in horizontal processing methods for manufacturing or processing so-called pipe materials such as multilayer pipe materials, coated pipe materials, etc.

(Prior art) Horizontal processing machines and processing methods for processing pipe materials between a plurality of rollers with the roller axis inclined with respect to the pass line are well known. A device is shown that processes bar material by rotating and revolving it.
The three rollers are driven from a roller shaft by a complex mechanism. In conventional device extension techniques, when the number of rollers is four or more, the strength of the rollers becomes weak and it is difficult to drive them. In addition, when machining pipes with a processing machine that processes rollers with twisted postures, the difference in dimension between the mandrel diameter inside the pipe material and the inside diameter of the pipe material becomes too small, making it difficult to remove the mandrel, and especially when the friction ring When driving,
The rollers were prone to seize, rough skin, and impressions, which were printed on the pipe material and reduced the commercial value of the pipe material. Furthermore, the surface layer of multilayer pipe materials such as multilayer pipe materials and coated pipe materials is easily damaged, so they have not been processed using horizontal processing machines. Also, a method is known in which two of the four rollers facing each other are used as processing rollers and the other two facing rollers are used as guide rollers, but in this case, processing is performed using two rollers. It was clear that the processing amount was inferior to the case of four rollers.

(Problems to be Solved by the Invention) A first object of the present invention is to provide a horizontal processing machine having an even number of four or more rollers, which is simple in structure and easy to rearrange and adjust. A second object of the present invention is to provide a processing method that makes it easy to remove the mandrel when processing a pipe material using a horizontal processing machine that uses an even number of rollers, such as four or more. A third object of the present invention is to provide a processing method that prevents deterioration due to roller abrasion, seizure, and impressions in the thickness finishing part of the pipe material, and obtains a pipe material with a smooth skin.6
A fourth object of the present invention is to provide a processing method using a horizontal processing machine that processes materials that are prone to deformation of defects, such as multilayer pipe materials, without causing these defects.

(Means for solving problems) The present invention is configured as follows.

1) The present invention is as shown in FIGS. 1 to 8.

A roller shaft 2 is twisted in the circumferential direction around a pass line 1, and an even number of four or more rollers 3 that open toward the entrance side are held in position by a roller carrier 4, and the inner diameter increases toward the entrance side. The rollers 31 and 32 in the finishing section on the exit side of the pass of the horizontal processing machine are configured to be in contact with the inner taper part of the roller 3 and driven to rotate by the frictional force with the friction ring 5. The inner surface shape of the friction ring and the roller shape are selected so as to separate from the ring, and the friction ring 5 is configured to be held by a roller carrier 4, and the friction ring 5 is cantilevered by the horizontal processing machine fixing part 12 on the exit side and connected to the drive source. 6 to rotate the roller 3, and the roller carrier 4 is connected to the horizontal processing machine fixing part 12 on the entry side.
It is configured so that it is cantilever-supported and connected to the drive f17 to drive the roller 3 to revolve, and further configured so that either the friction ring 5 or the roller carrier 4 or both can separate them in the direction of the pass line 1. This is a horizontal processing device that is characterized by:

In the present invention, a roller shaft 2 is twisted circumferentially around a pass line l, and an even number of four or more rollers 3 that open toward the entry side are maintained in a posture by a roller carrier 4. Depending on the method of support, it is preferable to press the lobes against the inner surface of the friction ring using a spring, for example, and attach them to the opening of the finished part on the exit side of the pass for horizontal machining. - It is preferable that the roller 0 (not shown) adjacent to the rollers 31 and 32 is also pushed toward the inner surface of the friction ring 5. Even without such a spring, the roller would be pressed against the friction ring by the centrifugal force of revolution and the reaction force of machining, but as mentioned above, the roller is pressed against the inner surface of the M friction ring by the spring, etc., and the roller is pressed against the friction ring at the contact point between the friction ring and the roller. It is desirable to keep both speeds the same at all times in order to prevent wear and seizure. In the present invention, the opening and opening 3 are configured to be in contact with the inner tapered part of the friction ring δ whose inner diameter increases toward the input side, and to be driven to rotate by the frictional force with the friction ring 5. This machining force is supported by the friction ring, and at the same time, the friction force drives the roller to rotate.

The roller interval can be changed by moving the rollers in the direction of pass line 1, in the front direction in the manner of zigzag machining. Then, the inner surface shape of the friction ring and the roller shape are selected so that the rollers 3m and 32 on the exit side of the pass of the horizontal processing machine are released from the friction ring.
By configuring the ij-ra so as to hold it there, wear, seizure, and push-in scratches on the ij-ra can be prevented. The friction ring 5 is cantilevered on the horizontal processing machine fixing part 12 on the exit side and is connected to a drive source 6 to drive the roller 3 to rotate, thereby facilitating rearrangement and adjustment. This makes it easier to take out the device when it stops due to internal trouble. As in the case of the friction ring, the roller carrier is configured to be cantilevered by the horizontal processing machine fixing part 12 on the entry side and connected to the drive source 7 to drive the roller 3 to revolve. Therefore, these are constructed so that either or both of the friction ring 5 and the lug carrier 4 can separate them in the direction of the pass line 1, that is, in the front-rear direction of the processing machine. or as shown in FIG.

The driven gear of the friction ring system is the bevel gear 8, and the bevel gear 8 of the drive R@ that meshes with this is the friction ring 5 and the driven gear 80.
It is arranged so that the friction ring 5 is separated at the meshing part between the two parts and can be moved in the direction of the pass line 1, or the driven gear on the roller carrier side is the bevel gear 1.
0, and the bevel gear 11 on the driving source side that meshes with the bevel gear 11 is separated between the roller carrier 4 and the driven gear 10 at the meshing portion of the roller carrier 4 and the driven gear 10. 2. The processing apparatus according to claim 1, wherein the processing apparatus is configured to be able to move in the direction of the pass line 1. In this way, when the bevel gear on the driving source side meshes with the bevel gear, and the bevel gear on the driving source side is located between the friction ring and its driven gear, or between the roller carrier and its driven gear.

Although the movement distance of the friction ring or roller carrier is limited, it is possible to move the friction ring or roller carrier in the direction of the pass line without changing the drive bevel gear. With this configuration, the friction ring and roller carrier can be easily separated in the pass line direction, rearrangement, adjustment, and troubleshooting of the Il:f-ra can be performed, and the normal machining state can be easily restored. You can return to

3) The present invention is as shown in Figures 1 to 8.

Twist the rollers @2 in the circumferential direction around the pass line l, and bring an even number of four or more rollers 3, which open toward the entrance side, into contact with the inner tapered part of the friction ring 5, and the rollers are rotated by the frictional force with the friction ring 5. Pipe material 1 on the exit side of the pass of a horizontal processing machine that is driven by its own axis
Roller 3 that rolls down 4M at the ridge part with a thickness of 3.
1 and rollers 32 that contact the outer surface of the tube without reducing the thickness, are alternately arranged in the circumferential direction of the tube to enlarge the inner diameter in this part, and rollers 31 of the tube thickness finishing section.
．． 32 is a method for transverse processing of a pipe material, which is characterized in that the pipe material is free from the friction ring 5.

In the present invention, when the material is a pipe material, as shown in Figs.
The tube material 13 moves forward while rotating, and its surface is processed into a spiral shape. At this time, the greater the number of rollers, the gentler and less difficult the processing, and the easier the processing of difficult-to-process materials and multilayer pipe materials. When the number of rollers is four or more, the rollers are not driven one by one, but all the rollers are driven simultaneously by one friction ring 5. As the number of a-ra increases, its strength decreases, but this problem is solved by supporting the body of the roller with the friction ring 6. Particularly when processing a pipe material, if the number of rollers is four or more, the inner diameter of the pipe material will be reduced and the gap with the mandrel 14 will become too small.

The problem is that the pipe material is easily damaged when the mandrel is removed.

In the present invention, the problem is solved by making the functions of four or more alternating rollers different in the finished part of the tube material thickness. In other words, as shown in Figures 1 to 4, all the rollers process the material from the entrance side to the center part, and in the thickness finishing section, there is a roller 31 that reduces the thickness, and a roller 31 that reduces the thickness. As shown in Fig. 4, at the exit side of this pass, at the tube material thickness finishing section, the roller 31 reduces the thickness and the roller 32 holds the pipe material without reducing the thickness. The determining rollers 32 are alternately arranged in the circumferential direction of the tube material. Here, it is preferable to reduce the reduction by 5% or more and 20% or less of the total thickness reduction.This lower limit value is a recommended value that enlarges the inner diameter by at least 3% at the finished part of the pipe material and makes it easier to remove the mandrel. 6 The upper limit value is the recommended value because the definition of the finished part of the pipe material thickness is usually 20% or less of the overall reduction, and in order to avoid placing an excessive load on the roller part that is released from the friction ring. With the above configuration, the inner diameter of the tube material is inevitably enlarged at the thickened portion. Also, in this tube material thickness finishing section, the roller is released from the friction ring.

Prevents roller damage such as wear, seizure, and impressions that occur between the roller and the friction ring.

4) According to the present invention, by the method described in item 3) above, it is also possible to drill holes into finished pipe material from circular or polygonal cross-section materials. For example, as shown in FIGS. The solid material is drawn in and a hole is made at the tip of the mandrel to reduce the thickness. In this case, the various conditions including the function of the roller in the thickness finishing section and its effects are 3)
As stated in the section. For example, a regular hexagonal cross section or a regular hexagonal cross section can be used with sharp corners.

With a square cross section, it is difficult to rotate the material, and corners must be rounded.

6) In the present invention, by the method described in item 3) or 4) above, it is possible to produce a multi-layered pipe material as a finished pipe material. Multilayer pipes and conventional methods have caused various problems, such as the surface layer being torn, the glabella joint being damaged, the inner surface of the pipe being damaged when the mandrel is removed, and the pipe deforming into a bellows shape.

The occurrence of these problems is alleviated by configuring the invention as described above.

(Example 1) Pottery clay mainly composed of alumina was kneaded and hardened into a circular tube shape using resin as a binder. ! I to 41st! 1 and 3
) When processing the above china clay into a thinner-walled circular tube with a smaller diameter by the method shown in section 5 to 811! l
The following items were confirmed using the method shown in Fig. 1 for the case where a hole was drilled into a round bar shape into a circular tube shape.

Nanahi, X is the distance from the pass center where the thickness reduction ends to the cola surface where the thickness is reduced, and Y is the distance from the pass center where the thickness reduction ends to the roller surface that contacts the outer surface of the pipe without reducing the thickness. .

Let D be the diameter of the mandrel at the point where the thickness reduction ends.

(1) The finished outer diameter of the pipe material is equal to (X+Y).

(2) The finished thickness of the pipe material is equal to (X-D/2).

(3) The finished inner diameter of the pipe material is equal to (-X+Y+D).

(4) If (-X+Y)/D is 3% or more, it is possible to avoid damaging the tube material when removing the mandrel.

In other words, in the method of the present invention, the inner diameter of the tube material is smaller than the mandrel diameter by
+Y') is large. The point at which the thickness reduction ends is the point at which the roller surface approaches the pass center closest.

Unlike the present invention, when processing is performed with all the roller intervals being equal in the thickness finishing section, the finished outside diameter of the pipe material becomes larger than the point (X+Y) at which the thickness reduction ends, and the finished thickness of the pipe material becomes larger than the point at which the thickness reduction ends. It becomes considerably larger than the point (X-B/2), and the inner diameter of the tube material is almost the same as the mandrel diameter, or is only about 2% larger at most, and the tube material may be damaged when the mandrel is removed.

In the method of the present invention, since the rollers are supported by the tabs on the inner surface of the friction ring, when changing only the finished outer diameter of the pipe material, only the small diameter roller on the exit side is supported in the axial direction ζ. Move to change the support radius of the inner surface of the friction ring. When only the finished thickness of the tube material is changed, only the exit system roller is moved in the roller axial direction to change the support radius of the inner surface of the friction ring. Change the finished outer diameter and finished thickness of the pipe material at the same time
), the positions of the two types of rollers mentioned above are changed at the same time.

When the relative positions of the two types of openings and rollers change in this way, the load applied to the rollers at the entrance side and the center of the path will inevitably change every other roller, but the axial movement range of these rollers will be It is best to limit the thickness to the range where the roller can be used to reduce the thickness.This will reduce variations in thickness. When the rollers that reduce the thickness and the rollers that contact the outer surface of the tube without reducing the thickness are arranged alternately in the circumferential direction of the tube, the inner diameter of the tube inevitably increases in this portion. Furthermore, if the rollers in this tube thickness finishing section are separated from the friction ring, the rollers in this portion can prevent deterioration such as seizure due to M-friction abrasion with the R friction ring, and can make the surface of the tube product smooth.

(Example 2) Pottery clay whose main component is alumina is kneaded and hardened into a circular V-shaped material using resin as a binder, and 10% Zirconif is added to the alumina.
A mixture of china clay is kneaded using resin as a binder, and a circular tubular material having an outer diameter slightly smaller than the inner diameter of the aforementioned circular tubular material and 1.
In step 7, this is pressed into the circular tubular material described above, and the material is joined by the method shown in FIGS. Confirm the following items as in Example 7. First, X is the distance from the pass center of the point where the thickness reduction ends to the roller surface where the thickness is reduced, and Y is the distance from the pass center of the point where the thickness reduction ends. Let D be the distance to the roller surface that contacts the outer surface of the tube without reducing the thickness, and the diameter of the mandrel at the point where the thickness reduction ends.

(i) The finished outer diameter of the W material is equal to (X + Y).

(2) The finished thickness of the pipe material is equal to (X-D/2).

(3) The finished inner diameter of the pipe material is equal to (-X+Y+D).

If (/1)(-X+Y)/D is 3% or more, it is possible to avoid damaging the tube material when removing the mandrel.

(Effects of the Invention) As described above, according to the present invention, when machining a pipe material with a horizontal processing machine using an even number of rollers of 4 or more, the structure is simple and rearrangement and adjustment work is easy. It is possible to provide a horizontal processing machine having an even number of rollers that are thicker or larger. Further, according to the present invention, it is possible to provide a processing method that allows easy removal of the mandrel. Further, according to the present invention, it is possible to provide a processing method that prevents deterioration due to abrasion of rollers, seizure, and impressions in the thickness finishing part of the tube material, and obtains a tube I, 1 with a smooth skin. Further, according to the present invention, it is possible to provide a processing method using a horizontal processing machine that processes materials that are prone to deformation of defects, such as multilayer pipe materials, without causing these defects.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram of the apparatus of the present invention and the case of processing a pipe material using it, Figures 2 to 4, and the figures A and A of Figure 1 respectively.
-A, B = B, C = C cross section, Figure 5 is an explanatory diagram of the present invention apparatus and the case of processing a pipe material using it, Figures 6 to 8 are A - A of Figure 5, respectively.
BB and CC cross sections. 1: Pass line, 2: o-la axis, 3. 31.
32: Roller, 4: Roller gear rear, 5: Friction ring, 6
: Friction ring, drive source, 7: Roller carrier drive source, 8:
Friction ring side driven bevel gear 9: Friction ring drive bevel gear. 10: Roller carrier side driven bevel gear, 11: Roller gear rear drive bevel gear, 12: Horizontal processing machine fixing part 21
3: Tube 6 criminal 14: Shinbo.

Claims (1)

[Claims] 1. The roller shafts are twisted in the circumferential direction around the pass line, and an even number of four or more rollers that open toward the entry side are maintained in a posture by a roller carrier, and the inner diameter increases toward the entry side. The roller is configured to be in contact with the increasing tapered part of the inner surface of the friction ring and driven to rotate by the frictional force with the friction ring, and the roller at the finishing part on the exit side of the pass of the horizontal processing machine is designed to be released from the friction ring. The inner surface shape of the friction ring and the roller shape are selected, and the friction ring is configured to be held by a roller carrier, and the friction ring is cantilevered on the horizontal processing machine fixing part on the exit side and connected to a drive source to drive the roller to rotate. and the roller carrier is configured to be cantilevered on the horizontal processing machine fixing part on the entry side and connected to a drive source to drive the rollers to revolve; further, either the friction ring or the roller carrier, or both. A horizontal machining device characterized in that it is configured such that the two can be separated in the pass line direction. 2. The driven gear on the friction ring side is a bevel gear, and the bevel gear on the drive source side that meshes with it is located between the friction ring and the driven gear, and the friction ring is separated at the meshing part and the friction ring is moved to the pass line. The driven gear on the roller carrier side is a bevel gear, and the bevel gear on the drive source side that meshes with this is located between the roller carrier and the driven gear, 2. The horizontal machining device according to claim 1, wherein the roller carrier is separated at the meshing portion so that the roller carrier can be moved in the pass line direction. 3. The roller shaft is twisted circumferentially around the pass line, and an even number of four or more rollers that open toward the entry side are brought into contact with the tapered part of the inner surface of the friction ring, and the rollers are driven to rotate by the frictional force with the friction ring. In the pipe material thickness finishing section on the exit side of the processing machine pass, rollers that reduce the thickness and rollers that contact the outer surface of the pipe material without reducing the thickness are arranged alternately in the circumferential direction of the pipe material to enlarge the inner diameter in this part. This is a horizontal processing method for pipe materials, which is characterized in that the rollers in the thickness finishing section of the pipe material are separated from the friction ring. 4. The method for transverse processing of a tube material according to claim 3, characterized in that the finished tube material is drilled from a circular cross-section or polygonal cross-section material. 5. The method for laterally processing a pipe material according to claim 3 or 4, wherein the finished pipe material is a multilayer pipe material.