CN113195126A - Spinning device, spinning method, and processing roller - Google Patents
Spinning device, spinning method, and processing roller Download PDFInfo
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- CN113195126A CN113195126A CN201980074895.4A CN201980074895A CN113195126A CN 113195126 A CN113195126 A CN 113195126A CN 201980074895 A CN201980074895 A CN 201980074895A CN 113195126 A CN113195126 A CN 113195126A
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- 238000000034 method Methods 0.000 title claims abstract description 91
- 238000009987 spinning Methods 0.000 title claims abstract description 82
- 238000003825 pressing Methods 0.000 claims abstract description 105
- 238000003672 processing method Methods 0.000 abstract description 7
- 230000002093 peripheral effect Effects 0.000 description 38
- 239000000463 material Substances 0.000 description 19
- 238000011946 reduction process Methods 0.000 description 8
- 239000012467 final product Substances 0.000 description 6
- 238000005242 forging Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/14—Spinning
- B21D22/16—Spinning over shaping mandrels or formers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
- B21D41/04—Reducing; Closing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H1/00—Making articles shaped as bodies of revolution
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention provides a spinning processing device and a spinning processing method, which can easily implement a plurality of processes in plastic processing for processing the end part of a cylindrical component. In order to solve the above problem, the present invention provides a spinning processing apparatus including a processing roller including: a diameter-reducing surface for reducing the diameter of the end of the tubular member; and an end face pressing surface for pressing the end face of the end portion.
Description
Technical Field
The invention relates to a spinning device and a spinning method. More specifically, the present invention relates to a spinning device and a spinning method for processing the shape of an end portion of a cylindrical member. The present invention also relates to a processing roller used in the spinning apparatus and the spinning method.
Background
In the method of manufacturing the brake piston, a spinning device is used when processing a groove portion at an opening side end portion of a bottomed cylindrical material. For example, a spinning method is known as disclosed in patent document 1, in which an opening end portion of a bottomed cylindrical material is first made smaller in diameter than a main body portion by forging, and then a pressing roller having a convex portion is pressed against a peripheral portion of the material to form a groove portion in the peripheral portion. Here, when the diameter of the opening end portion of the bottomed cylindrical material is set to be substantially the same as the diameter of the main body portion, if the convex portion of the pressing roller is caused to enter the material, the material pressed by the convex portion flows to both sides of the convex portion, and the groove portion is tapered. In addition, the excess material flowing to both sides of the convex portion forms an excess portion on the outer peripheral surfaces of both sides of the groove portion, which may cause a failure in the shape of the groove portion in the final product. On the other hand, when the diameter of the opening end portion of the bottomed cylindrical material is made smaller than the diameter of the main body portion by forging in advance as in patent document 1, the material can be suppressed from flowing to both sides of the convex portion.
Prior art documents
Patent document
Patent document 1: japanese laid-open patent publication No. 2007-90387
Disclosure of Invention
Technical problem to be solved by the invention
In spinning for forming a groove portion at an end portion of a cylindrical member, when it is necessary to make the inner diameter of the end portion on the opening side smaller than the inner diameter of the main body portion (to form a large step) as a final shape, the end portion of the cylindrical member is reduced in diameter in advance, and the groove portion is formed using the cylindrical member having the opening end portion smaller in diameter than the main body portion. Therefore, the following two processes are required: a diameter reduction step of reducing the diameter of the end of the tubular member by forging in advance; and a grooving process for forming a groove portion on the outer peripheral surface of the cylindrical member.
The invention provides a spinning processing device and a spinning processing method, which can easily implement a plurality of processes in plastic processing for processing the end part of a cylindrical component.
Means for solving the technical problem
As a result of intensive studies on the above-described problems, the present inventors have found that, by arranging the rotation axis of the processing roller for reducing the diameter of the end portion of the tubular member so as to be substantially perpendicular to the rotation axis of the tubular member, the diameter reduction processing for reducing the diameter of the end portion of the tubular member and the end face pressing processing for pressing the face of the end portion of the tubular member can be performed by one processing roller, and have completed the present invention.
That is, the present invention provides a spinning device, a spinning method, and a processing roller as follows.
In order to solve the above problem, the present invention provides a spinning processing apparatus for performing plastic processing on an end portion of a cylindrical member, comprising a processing roller including: a diameter-reducing surface for reducing the diameter of the end of the tubular member; and an end face pressing surface for pressing the end face of the end portion.
According to the spinning processing apparatus, the diameter reducing process of reducing the diameter of the end portion of the tubular member and the end surface pressing process of pressing the surface of the end portion of the tubular member can be performed by one processing roller. Therefore, in plastic working for working an end portion of a cylindrical member, a spinning device and a spinning method which are simplified can be provided.
In addition, the spinning processing apparatus according to an embodiment of the present invention includes a grooving roller having a groove portion formed on an outer peripheral surface of the cylindrical member.
According to the above feature, since the processing roller for performing the diameter-reducing process and the end surface pressing process and the grooving roller for performing the grooving process are provided, the diameter-reducing process, the grooving process, and the end surface pressing process can be performed by one plastic working.
In order to solve the above problem, the present invention provides a spinning device for plastically working an end portion of a cylindrical member, comprising: a grooving roller for forming a groove part on the outer circumferential surface of the cylindrical member; and a processing roller having a diameter-reduced surface for reducing the diameter of an end portion of the tubular member, wherein a rotation axis of the processing roller is arranged substantially perpendicular to the rotation axis of the tubular member.
According to the spinning processing apparatus of the present invention, since the rotation axis of the processing roller is arranged substantially perpendicular to the rotation axis of the cylindrical member, the processing roller can be subjected to the diameter reducing process of reducing the diameter of the end portion of the cylindrical member and the end surface pressing process of pressing the surface of the end portion of the cylindrical member. Therefore, according to the spinning processing apparatus of the present invention, the diameter reducing process and the end surface pressing process of the three plastic working processes of the diameter reducing process, the grooving process, and the end surface pressing process can be performed in a short time by the continuous operation of one roller, and therefore, the processing can be performed by two plastic working processes in substance.
In one embodiment of the spinning machine according to the present invention, the processing roller has a tapered portion whose diameter is reduced along a rotation axis direction thereof.
According to this feature, when the diameter reduction treatment is performed by pressing the outer peripheral surface of the cylindrical member by moving the processing roller in the direction of the rotation axis, the outer peripheral surface of the cylindrical member is reduced in diameter in conformity with the tapered portion, and therefore, the action of the pressing force is dispersed, and the diameter reduction treatment can be performed stably.
In order to solve the above problem, the present invention provides a processing roller used in a spinning processing apparatus, comprising: a diameter-reducing surface for reducing the diameter of the end of the tubular member; and an end face pressing surface for pressing the end face of the end portion.
According to the processing roller of the present invention, since the diameter reduction process and the end surface pressing process can be performed at the same time, the diameter reduction process and the end surface pressing process can be performed by one plastic working.
In order to solve the above problem, the present invention provides a spinning method for plastic working an end portion of a cylindrical member, comprising: a diameter reduction step of reducing the diameter of the end of the cylindrical member; and an end face pressing step of pressing the end face, and performing the diameter reducing step and the end face pressing step with one roller.
According to this spinning method, the diameter-reducing process of reducing the diameter of the end portion of the tubular member and the end-face pressing process of pressing the surface of the end portion of the tubular member can be performed using one processing roller, and therefore, the plastic working of processing the end portion of the tubular member can be simplified.
Effects of the invention
According to the present invention, there are provided a spinning processing apparatus and a spinning processing method capable of easily performing a plurality of processes in plastic processing for processing an end portion of a cylindrical member.
Drawings
Fig. 1 is a schematic explanatory view showing a structure of a spinning machine according to embodiment 1 of the present invention.
Fig. 2 is a schematic explanatory view showing a structure of a spinning machine according to embodiment 1 of the present invention. Wherein (A) is a schematic explanatory view showing a diameter reducing step, and (B) is a schematic explanatory view showing a grooving step and an end face pressing step.
Fig. 3 is a schematic explanatory view showing another embodiment of the processing roller of the present invention.
Fig. 4 is a schematic explanatory view showing another embodiment of the processing roller of the present invention.
Fig. 5 is an enlarged view of a broken-line frame region in fig. 2 (B), and is a schematic explanatory view for explaining the operation of the processing roller of the spinning processing apparatus according to embodiment 1 of the present invention.
Fig. 6 is a perspective view, a front view, a left side view, and a right side view of a processing roller of the spinning processing apparatus according to embodiment 1 of the present invention. The rear, top and bottom views have the same shape as the front view, and therefore are not shown.
Fig. 7 is a schematic explanatory view showing a structure of a spinning apparatus according to embodiment 2 of the present invention.
Detailed Description
Embodiments of a spinning apparatus, a spinning method, and a processing roller according to the present invention will be described below in detail with reference to the drawings.
The spinning processing apparatus, the spinning processing method, and the processing roller described in the embodiments are merely examples for explaining the spinning processing apparatus, the spinning processing method, and the processing roller according to the present invention, and the present invention is not limited thereto.
Spinning is a method of plastic working in which a rotating plate-like or cylindrical member is pressed by a roller or a spatula to be molded. For example, spinning is used for manufacturing parts or products such as brake parts (brake pistons for disc brakes, etc.), engine parts, tire hubs, household containers, decorative handicrafts, lighting fixtures, communication equipment, boilers, large tanks, and nozzles.
The spinning device and the spinning method of the present invention can be used for plastic working of the end portion of a cylindrical member. More specifically, the present invention is suitably used for diameter reduction of an end portion of a tubular member, and even for plastic working in which the end portion of the tubular member is diameter-reduced and a surface of the end portion is pressed (end surface pressing).
In particular, the spinning method for forming the groove portion at the end portion of the tubular member can be suitably used in a case where the inner diameter of the opening-side end portion needs to be smaller (a large step is formed) than the inner diameter of the main body portion as a final shape.
[ 1 st embodiment ]
(spinning machine)
Fig. 1 is a schematic explanatory view showing a structure of a spinning apparatus 1A according to embodiment 1 of the present invention. As shown in fig. 1, a spinning processing apparatus 1A according to embodiment 1 of the present invention includes a processing roller 2A for performing diameter reduction processing and end surface pressing processing on an end portion of a cylindrical member T, and a grooving processing roller 3 for forming a groove portion on an outer circumferential surface of the cylindrical member T.
The spinning machine 1A includes a rotation mechanism (not shown) that rotates about a rotation axis R1, a main shaft 5 connected to the rotation mechanism, and a fixing mechanism 4A for fixing a cylindrical member T to the tip of the main shaft 5. The cylindrical member T is fixed to the tip of the spindle 5 by the fixing mechanism 4A, and rotates about the rotation axis R1.
The spinning processing apparatus 1A includes a processing roller holder 6 for mounting the processing roller 2A. The processing roller 2A is attached to the processing roller holder 6 and rotates about a rotation axis R2. The rotation axis R2 is substantially perpendicular to the rotation axis R1 of the tubular member T.
The spinning machine 1A includes a grooved roller holder 7 for mounting the grooved roller 3. The grooved processing roller 3 is attached to the grooved processing roller holder 7 and rotates about a rotation axis R3. The rotation axis R3 is substantially parallel to the rotation axis R1 of the tubular member T.
Hereinafter, each member will be described in detail.
< fixing means >
The fixing mechanism 4A is a mechanism for fixing the tubular member T to the tip of the spindle 5 coupled to the rotation mechanism. The fixing mechanism 4A of embodiment 1 is a chuck that is provided to the spindle 5 and clamps and fixes the outer peripheral surface of the tubular member T.
The fixing mechanism 4A may be any fixing mechanism, and may be, for example, a mandrel or the like which is inserted into the cylindrical member T and abuts against the bottom of the cylindrical member T to fix the cylindrical member T to the tip of the spindle 5, in addition to the chuck described above.
The tubular member T may be a tubular member formed of a material suitable for plastic working, and may be a bottomed tubular member, for example. The shape of the cylindrical shape is not particularly limited, and may be a cylindrical shape, an elliptic cylindrical shape, or a polygonal cylindrical shape. From the viewpoint of achieving stable rotation, a cylindrical shape is preferably employed. The material suitable for plastic working is not particularly limited, and steel materials may be mentioned. The tubular member T of embodiment 1 is a bottomed cylindrical tubular member obtained by forging. The tubular member T may be a tubular member whose end portion is not reduced in diameter, or a tubular member whose end portion is reduced in diameter.
< working roll >
The processing roller 2A is a roller having a diameter-reduced surface used for diameter reduction of the end portion of the tubular member and an end-face pressing surface used for end-face pressing of pressing the end-face surface, and is a roller for performing diameter reduction of the end portion of the tubular member T and end-face pressing of the end portion of the tubular member T. As shown in fig. 2 (a) and (B), the rotation axis R2 of the processing roller 2A is arranged substantially perpendicular to the rotation axis R1 of the cylindrical member T, and the processing roller 2A is designed to be movable in the axial direction of the rotation axis R2 and in the direction parallel to the axis of the rotation axis R1 (the movement direction of the processing roller 2A is shown by black arrows in the figure). In the arrangement of the rotation axes R1 and R2, "substantially vertical" includes a case where the device is deviated from vertical within the scope of common knowledge in the device design technology. The term "out-of-plane straight line" also includes a case where the rotation axis R1 and the rotation axis R2 intersect perpendicularly on the same plane, and a case where they intersect perpendicularly on different planes.
As shown in fig. 2 (a), the processing roller 2A includes a cylindrical processing roller main body 23a and a cylindrical end surface pressing portion 22A having a smaller diameter than the processing roller main body 23a, and a tapered portion 21a having a diameter reduced in the direction of the rotation axis R2 is formed between the processing roller main body 23a and the end surface pressing portion 22A.
The processing roller main body 23a is a structure rotatable about a rotation axis R2. The shape may be any shape, and may be a circular pillar, an elliptic pillar, a polygonal pillar, or the like, in addition to the cylindrical shape. From the viewpoint of stable rotation, a cylindrical shape or a disk shape is preferably used.
The end surface pressing portion 22a is provided to protrude from the processing roller main body 23a, and rotates coaxially with the processing roller main body 23 a. The peripheral surface on which the end surface pressing portion 22a rotates is an end surface pressing surface 25a for pressing the end surface of the tubular member T, and the end surface pressing surface 25a is pressed against the end surface of the tubular member T, whereby the end surface pressing process is performed. The shape of the end surface pressing portion 22a can be set as appropriate according to the shape of the end surface of the tubular member T. Examples thereof include a truncated cone shape having a diameter reduced or enlarged from the processing roller body 23a, a cylindrical shape having a rim portion on an outer peripheral surface, and the like.
The tapered portion 21a is formed between the processing roller main body 23a and the end surface pressing portion 22a, and rotates coaxially with the processing roller main body 23a and the end surface pressing portion 22 a. The tapered portion 21a has a shape whose diameter decreases from the processing roller main body 23a toward the end face pressing portion 22a along the direction of the rotation axis R2. The tapered portion 21 may have a shape whose diameter decreases from the processing roller main body 23a toward the end face pressing portion 22a, and may have a tapered portion whose cross section is linear from the processing roller main body toward the end face pressing portion, or may have a tapered portion whose cross section is curved from the processing roller main body toward the end face pressing portion. The circumferential surface drawn by the rotation of the tapered portion 21a is a diameter-reduced surface 24a for pressing the outer circumferential surface of the tubular member T, and the diameter-reduced surface 24a is pressed against the outer circumferential surface of the tubular member T, thereby performing the diameter reduction. When the tapered portion having a linear cross section is used, a constant force is applied from the processing roll to the outer peripheral surface of the tubular member T during the diameter reduction process, and therefore stable plastic processing can be performed.
Fig. 3 and 4 show another embodiment of the processing roller according to the present invention. In each example, the same reference numerals are given to the same shaped portions, and the description thereof is omitted.
The processing rollers 2B and 2D shown in fig. 3 (a) and 4 (a) include a disc-shaped processing roller main body 23B and a tapered portion 21B having a curved cross section, and the circumferential surface of the tapered portion 21B has a curved diameter-reduced surface 24B.
The processing roller 2C shown in fig. 3 (B) is formed by providing a truncated cone-shaped tapered portion 21C protruding from an inner region of an end surface of a cylindrical processing roller main body 23 a. The circumferential surface of the tapered portion 21c forms a linear diameter-reduced surface 24 c.
The processing roller 2D shown in fig. 4 (a) has a truncated conical end surface pressing portion 22b that is reduced in diameter from the processing roller main body 23 b. The peripheral surface of the end surface pressing portion 22b forms an inclined end surface pressing processed surface 25 b.
The processing roller 2E shown in fig. 4 (B) has a cylindrical end surface pressing portion 22c having a rim portion 26 on the outer peripheral surface. The circumferential surface of the end surface pressing portion 22c forms an arc-shaped end surface pressing surface 25 c.
When the diameter reduction treatment is performed, the processing roller 2A moves in the axial direction of the rotation shaft R2, and presses the end portion of the cylindrical member T from the outer peripheral surface. When the end portion of the cylindrical member T is pressed by the processing roller 2A and starts to be reduced in diameter, the outer peripheral surface of the end portion of the cylindrical member T is reduced in diameter in conformity with the tapered portion 21a of the processing roller 2A. In this case, the diameter is contracted toward the axial center of the tubular member without greatly changing the thickness (difference between the outer diameter and the inner diameter) of the tubular member.
The position of the outer peripheral surface of the end portion of the tubular member T after the diameter reduction (the outer diameter of the end portion of the tubular member T) depends on the position of the end surface on the smaller diameter side of the tapered portion 21 a. Therefore, the diameter of the outer peripheral surface of the end portion of the cylindrical member T after the diameter reduction can be set by adjusting the moving distance of the processing roller 2A in the axial direction of the rotation shaft R2.
When the end face pressing process is performed, the processing roller 2A moves in a direction combining the direction parallel to the axis of the rotation axis R1 and the direction parallel to the rotation axis R2, presses the surface of the end portion of the tubular member T with the end face pressing portion 22A of the processing roller 2A, and presses the region of the outer peripheral surface of the tubular member T on the opening side of the groove portion toward the inner radial side. By pressing the surface of the end of the tubular member T, the material of the tubular member T can be suppressed from flowing in the direction of the rotation axis R1 in the grooving process or the like. Further, by pressing the surface of the end portion, the shape of the end portion of the cylindrical member T can be flattened. Further, by pressing the range of the outer peripheral surface of the cylindrical member T on the opening side of the groove portion toward the inner diameter side, the outer diameter of the end portion on the opening side of the cylindrical member T can be set within a predetermined range.
The movement direction of the processing roller 2A during the end face pressing process may be only the movement in the direction parallel to the axis of the rotation axis R1.
< grooving process roll >
The grooving roller 3 is a roller for performing grooving for forming a groove portion on the outer peripheral surface of the cylindrical member T. As shown in fig. 2 (B), the rotation axis R3 of the grooving process roller 3 is arranged in parallel with the rotation axis R1 of the cylindrical member T, and the grooving process roller 3 is designed to be movable in such a manner that the axis of the rotation axis R3 is close to the axis of the rotation axis R1 (the moving direction of the grooving process roller is shown by black arrows in the figure).
The direction of the rotation axis R3 of the grooving roller 3 is not particularly limited, and may be arranged obliquely without being parallel to the rotation axis R1 of the cylindrical member T.
As shown in fig. 2 (a), the grooving process roller 3 has a cylindrical grooving process roller body 32 and a groove forming portion 31 provided to protrude on the outer peripheral surface of the grooving process roller body 32. The shape and width of the groove forming portion 31 can be appropriately designed according to the shape and width of the groove portion to be formed on the outer peripheral surface of the cylindrical member T.
When performing the grooving process, the grooving roller 3 moves so that the axis of the rotation axis R3 is close to the axis of the rotation axis R1, and presses the outer peripheral surface of the cylindrical member T by the groove forming portion 31. The groove portion 31 is pressed to form a groove portion on the outer peripheral surface of the cylindrical member T.
It is preferable to perform the grooving process by the grooving process roller 3 and the end face pressing process by the end face pressing portion 22A of the processing roller 2A at the same time. By performing the end face pressing process simultaneously with the grooving process, the thickness of the groove portion can be further ensured.
Fig. 5 shows an enlarged view of the dashed-line frame region in fig. 2 (B). The processing roller 2A in fig. 5 is arranged at the end of the diameter reduction processing. As shown in fig. 5, the outer peripheral surface of the cylindrical member T is reduced in diameter in conformity with the tapered portion 21a by the diameter reduction process (the region in which the diameter is reduced is referred to as "reduced diameter region D"). By forming the groove portions G in the reduced diameter region D, it is possible to suppress the occurrence of a problem that the material of the tubular member T flows to both sides of the groove forming portion 31a during the grooving process. Therefore, the spinning method for forming the groove portion in the end portion of the tubular member can be suitably used in a case where the inner diameter of the opening-side end portion needs to be smaller (a large step is formed) than the inner diameter of the main body portion as a final shape.
In view of the operational effect of the reduced diameter region D in forming the groove portion G, the processing roll 2A is preferably arranged such that the tapered portion 21a is arranged within the range in which the groove portion G is to be formed. In the example shown in fig. 5, the processing roll 2A is arranged so that the reduced diameter region D is entirely included in the region where the groove portions G are to be formed, but the reduced diameter region D may partially overlap the region where the groove portions G are to be formed.
The upper end of the reduced diameter region D is preferably disposed above the groove G. By disposing the upper end of the reduced diameter region D above the groove G, the overlapping region between the groove G and the reduced diameter region D can be enlarged.
The distance D1 from the lower end of the reduced diameter region D to the lower end of the groove G is preferably greater than the distance D2 by which the end-face-pressure-treated surface 24a moves in the direction parallel to the rotation axis R1 when the end-face pressure treatment is performed. Thus, when the end surface pressing surface 24a is moved in the direction parallel to the rotation axis R1 during the end surface pressing process, the tapered portion 21a can be prevented from abutting against the outer peripheral surface of the tubular member T and causing a diameter reduction process.
Next, the diameter reduction and the grooving process will be described with reference to fig. 2 and 5.
As shown in fig. 2 (a) and 5, in the diameter reducing process, the end portion of the cylindrical member T is reduced in diameter by pressing the outer peripheral surface of the end portion of the cylindrical member T with the surface of the tapered portion 21a of the processing roll 2A at the end portion on the smaller diameter side and the diameter-reduced surface 24a constituted by the peripheral surface of the tapered portion 21 a. In fig. 5, the state in which the end portion of the tubular member T has been reduced in diameter is shown by the broken line of the tubular member T. As shown in fig. 5, when the diameter reduction is completed, the outer peripheral surface of the cylindrical member T is in contact with the diameter-reduced surface 24a of the processing roller 2A. In the diameter reduction treatment, the diameter is reduced toward the axial center of the tubular member without significantly changing the thickness (difference between the outer diameter and the inner diameter) of the tubular member.
The diameter reduction treatment is preferably stopped at a position larger than the outer diameter of the open end portion of the final product. The remaining diameter reduction treatment until the outer diameter of the opening end portion of the final product becomes the outer diameter is performed at the time of or after the end face pressing treatment. The details of the remaining diameter reduction processing will be described later together with the end surface pressing processing.
As shown in fig. 2 (B) and 5, in the grooving process, the groove forming portion 31 of the grooving roller 3 is moved into a position of the reduced diameter region D on the outer peripheral surface of the tubular member T, and the end surface pressing portion 22A of the processing roller 2A presses the surface of the end portion of the tubular member. Since the groove forming process is performed in the reduced diameter region D, the material of the tubular member T can be prevented from flowing to the outer peripheral surface on both sides of the groove portion G, and the occurrence of a convex portion due to a defect on the outer peripheral surface of the tubular member T can be prevented. In addition, since the material can be prevented from flowing in the direction of the rotation axis R1 when the groove G is formed by the end surface pressing process, the thickness of the groove G can be ensured.
As shown in fig. 5, when the end face pressing process is performed, the processing roller 2A moves in the axial direction of the rotation axis R2, and the remaining diameter reduction process is performed. When grooving or pressing the end face, the opening end of the tubular member T may be unintentionally reduced in diameter, which may cause variation in the outer diameter of the opening end of the final product. However, by performing the diameter reduction process as the final process, the outer diameter of the opening end portion of the tubular member T can be adjusted to a predetermined size.
The movement of the processing roller 2A during the end face pressing process may be inclined in a direction combining the direction parallel to the axis of the rotation axis R1 and the direction parallel to the rotation axis R2, or may be performed separately in the direction parallel to the axis of the rotation axis R1 and in the direction parallel to the rotation axis R2.
In addition, when the movement in the direction parallel to the axis of the rotation axis R1 and the movement in the direction parallel to the rotation axis R2 are separately performed, it is preferable that the movement in the direction parallel to the rotation axis R2 is stopped at the end from the viewpoint of finally adjusting the outer diameter of the opening end portion of the cylindrical member T.
(spinning method)
The spinning method of the present invention is a spinning method for plastically working an end portion of a cylindrical member, and is characterized by comprising the steps of: a diameter reduction step of reducing the diameter of the end of the cylindrical member; and an end face pressing step of pressing the end face, and performing the diameter reducing step and the end face pressing step with one roller.
The spinning method of the present invention may further include a grooving step of forming a groove portion in the outer peripheral surface of the cylindrical member.
The sequence of the treatment steps is as follows: first, a diameter reduction step is performed, and then a grooving step and an end face pressing step are performed. In addition, the grooving process step and the end face pressing process step may be performed simultaneously or may be performed separately.
The diameter reduction treatment may be performed in two or more steps. In particular, it is preferable to perform the first diameter reduction step before the grooving process and the last diameter reduction step after the remaining diameter reduction. The first diameter reduction step is intended to suppress the material of the cylindrical member from flowing to the outer peripheral surfaces on both sides of the groove portion during the grooving process. The final diameter reduction step aims at adjusting the outer diameter of the open end of the final product. If the grooving process or the end face pressing process is performed, the outer diameter of the opening end portion of the final product may be slightly changed, and therefore, the final diameter reduction process step is preferably stopped at the end of all the processes.
In addition, not only the diameter reducing step may be performed in two or more steps, but also the grooving step and the end surface pressing step may be performed in two or more steps as necessary.
(shape of processing roller)
Fig. 6 shows a perspective view, a front view, a left side view, and a right side view of the processing roller 2A of the present invention. The rear view, the top view, and the bottom view are the same shapes as the front view. The processing roller 2A of the present invention is an article used by being attached to a spinning processing apparatus in plastic working of a material such as a steel material, and is used for performing a diameter reducing process for reducing the diameter of an end face of a cylindrical member and an end face pressing process for pressing the end face of the cylindrical member.
As shown in the front view of fig. 6, the processing roller 2A includes a processing roller main body 23a, an end surface pressing portion 22A, and a tapered portion 21 a. The diameter reduction is performed by the tapered peripheral surface of the truncated cone-shaped tapered portion 21a and the surface of the small-diameter-side end portion of the tapered portion 21a, and the end surface pressing process is performed by the peripheral surface of the cylindrical end surface pressing portion. That is, the main part of the shape of the processing roller 2A of the present invention is a region from the tapered peripheral surface of the tapered portion 21a to the peripheral surface of the end surface pressing portion 22A (a region between arrows shown in the front view of fig. 6).
[ 2 nd embodiment ]
Fig. 7 is a schematic explanatory view showing a structure of a spinning apparatus 1B according to embodiment 2 of the present invention. As shown in fig. 7, the spinning machine 1B according to embodiment 2 of the present invention includes, as a fixing means for fixing the tubular member T to the tip end of the spindle 5, a fixing means 4B made of a mandrel bar in addition to a fixing means 4A made of a chuck. The other structure is the same as that of the spinning processing apparatus 1A of embodiment 1.
The mandrel is a cylindrical member having a diameter smaller than the inner diameter of the cylindrical member T, and the cylindrical member T is fixed to the distal end of the main shaft 5 by inserting one end of the mandrel into the cylindrical member T and pressing the bottom of the cylindrical member T against the distal end of the main shaft 5. Further, the outer diameter of the mandrel bar may be designed to be large so that the inner circumferential surface of the groove portion of the machined tubular member T is pressed by the circumferential surface of the mandrel bar. The other end of the mandrel is fixed to a follower (not shown), and the mandrel rotates together with the rotation of the cylindrical member T.
According to the spinning processing apparatus 1B of embodiment 2, the fixing mechanism 4B made of the mandrel bar stabilizes the fixing of the cylindrical member T in the direction of the rotation axis R1. Therefore, the shape of the end face of the cylindrical member T formed by the end face pressing treatment is flattened, and a product excellent in the processing quality of the end face shape can be obtained.
Industrial applicability
The spinning device and the spinning method of the present invention can be used for plastic working of the end portion of a cylindrical member. More specifically, the method can be used for diameter reduction of the end portion of the tubular member. For example, the present invention can be used for manufacturing parts or products such as brake parts (brake pistons for disc brakes, etc.), engine parts, tire hubs, home containers, decorative handicrafts, lighting fixtures, communication equipment, boilers, large tanks, and nozzles.
Further, in the spinning processing apparatus and the spinning processing method according to the present invention, since the end surface pressing process of the end portion of the tubular member can be performed by using one processing roller, the spinning processing apparatus and the spinning processing method are more preferably used for plastic processing in which the diameter reducing process and the end surface pressing process are performed.
The processing roller of the present invention can be applied to a spinning processing apparatus and used for diameter reduction of an end portion of a cylindrical member. Further, the processing roller of the present invention can also perform an end face pressing process on the end portion of the cylindrical member, and therefore is more preferably used for plastic working in which a diameter reducing process and an end face pressing process are performed.
Further, the working roller of the present invention can be applied to a conventional spinning working apparatus, and the spinning working apparatus which originally performs the diameter reducing treatment and the end surface pressing treatment by using different rollers can be simply changed to a spinning working apparatus which can perform the diameter reducing treatment and the end surface pressing treatment by using one working roller.
Description of the symbols
1A, 1B-spinning processing device, 2A, 2B, 2C, 2D, 2E-processing roller, 21A, 21B, 21C-tapered portion, 22A, 22B, 22 c-end face pressing part, 23a, 23B-processing roller body, 24A, 24B-diameter reducing processing surface, 25a, 25B, 25 c-end face pressing processing surface, 26-rim part, 3-grooving processing roller, 31-grooving part, 32-grooving processing roller body, 4A, 4B-fixing mechanism, 5-main shaft, 6-processing roller holder, 7-grooving processing roller holder, T-cylindrical part, R1-rotating shaft of cylindrical part, R2-rotating shaft of processing roller, R3-rotating shaft of grooving processing roller, G-groove part, D-diameter reducing region.
Claims (5)
1. A spinning processing device is characterized in that,
the processing roller is provided with: a diameter-reducing surface for reducing the diameter of the end of the tubular member; and an end face pressing surface for pressing the end face of the end portion.
2. A spinning processing device is characterized by comprising:
a grooving roller for forming a groove part on the outer circumferential surface of the cylindrical member; and
a processing roller having a diameter-reducing surface for reducing the diameter of an end portion of the cylindrical member,
the rotation axis of the processing roller is arranged substantially perpendicular to the rotation axis of the cylindrical member.
3. The spinning processing apparatus according to claim 1 or 2,
the processing roller has a tapered portion with a diameter reduced along a rotation axis direction thereof.
4. A processing roller used in a spinning processing device is characterized in that,
the processing roller is provided with: a diameter-reducing surface for reducing the diameter of the end of the tubular member; and an end face pressing surface for pressing the end face of the end portion.
5. A spinning method is characterized by comprising the following steps:
a diameter reduction step of reducing the diameter of the end of the cylindrical member; and
an end face pressing step of pressing a face of the end portion,
and the diameter reducing step and the end face pressing step are performed by one roller.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-242186 | 2018-12-26 | ||
| JP2018242186A JP7181079B2 (en) | 2018-12-26 | 2018-12-26 | Spinning processing device, spinning processing method, processing roller |
| PCT/JP2019/039550 WO2020137077A1 (en) | 2018-12-26 | 2019-10-07 | Spinning device, spinning method, and processing roller |
Publications (2)
| Publication Number | Publication Date |
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| CN113195126A true CN113195126A (en) | 2021-07-30 |
| CN113195126B CN113195126B (en) | 2024-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201980074895.4A Active CN113195126B (en) | 2018-12-26 | 2019-10-07 | Spinning device, spinning method and processing roller |
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| Country | Link |
|---|---|
| JP (1) | JP7181079B2 (en) |
| CN (1) | CN113195126B (en) |
| WO (1) | WO2020137077A1 (en) |
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| JP2022014029A (en) * | 2020-07-06 | 2022-01-19 | 日本スピンドル製造株式会社 | Spinning device and spinning method |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP7181079B2 (en) | 2022-11-30 |
| WO2020137077A1 (en) | 2020-07-02 |
| JP2020104119A (en) | 2020-07-09 |
| CN113195126B (en) | 2024-02-13 |
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