JP5132199B2 - Rolling round die and rolling method of this rolling round die - Google Patents

Description

  The present invention relates to a rolling die formed by combining a plurality of round dies for performing rolling processing on a rolling machine, and a rolling method for the rolling die. More specifically, a round die for rolling formed by combining a round die body having irregularities for rolling processing on the convex outer peripheral surface portion of the outer peripheral surface portion so as to be arranged side by side in the axial direction. The present invention relates to a rolling method of a rolling round die.

  One of the processing methods for manufacturing parts in which parts such as screws, gears, serrations, and splines are formed is rolling by a rolling machine. The rolling machine performs a rolling process by attaching a rolling tool such as a round die or a flat die. In the round die, irregularities for rolling a predetermined shape on the workpiece are formed on the outer peripheral surface.

  Further, a plurality of types of round dies to be mounted on the die spindle of the rolling machine are required. A round die that performs thread rolling requires a different round die for each type of screw. For example, a metric coarse screw M16 (pitch 2 mm) defined in the Japanese Industrial Standard (JIS) is transferred to a workpiece. When manufacturing, a round die for the metric coarse screw M16 (pitch 2 mm) is used. When rolling the metric coarse screw M12 (pitch 1.75 mm) to a workpiece, a round die for the metric coarse screw M12 (pitch 1.75 mm) is used. Therefore, when rolling various kinds of workpieces, there is a problem that time for exchanging the round dies is generated and the production efficiency is lowered.

  In order to solve this problem, proposals have been made using the fact that the outer diameter of the round die is larger than the outer diameter of the workpiece. That is, a rolling round die is known in which the outer peripheral surface is divided by grooves, and on the divided outer peripheral surface, streak-shaped convex portions for processing different types of screws are formed (for example, Patent Documents). 1).

On the other hand, regarding roll dies (round dies), proposals for improving productivity have been made. In other words, a gear rolling tool provided with a recess for allowing the processed material to be discharged to the outside on the outer periphery of the roll die is configured so that the tooth profile on the outer periphery of the roll die is indexed, intermediate finished, and finished. It is known (see, for example, Patent Document 2).
JP 2004-181509 A Japanese Patent Laid-Open No. 06-063675

However, some workpieces do not have a single rolled part, but perform rolling on a plurality of rolled parts. In such a case, a plurality of rolling machines for rolling each rolled part are prepared, and the workpiece is transported and supplied to the rolling machine to perform the rolling process. Was common. However, such a processing method has problems such as an increase in equipment costs and a large area required for installing the rolling machine. What makes so-called multiple rolling easy to perform rolling processing at multiple locations in the axial direction of the work piece, in other words, can perform rolling processing to multiple rolled parts at one rolling machine. Development of technology was requested.
The techniques described in Patent Document 1 and Patent Document 2 described above have not solved such problems.

The present invention has been made to solve the above-described conventional problems, and achieves the following object.
An object of the present invention is to provide a rolling die that can be easily rolled to a plurality of rolled portions of a plurality of workpieces with a single rolling machine.
Furthermore, another object of the present invention is to provide a rolling method for a rolling round die that can be easily rolled into a plurality of rolled parts of a workpiece with a single rolling machine. .

The present invention takes the following means in order to achieve the object.
The rolling die of the present invention 1 is
It is detachably attached to the rolling tool spindle of the rolling machine, is rotated about the rolling tool spindle and presses the outer peripheral surface of the rotatable workpiece, and is formed on the outer peripheral surface. A rolling die for rolling irregularities of a predetermined shape on the outer peripheral surface of the workpiece, wherein the rolling die has two or more round die bodies formed on the rolling tool spindle. The round die body has a convex outer peripheral surface that is formed in a convex shape from the other outer peripheral surface only during a predetermined angle, and the convex outer peripheral surface includes the convex outer peripheral surface. all SANYO which irregularities are formed, the rolling for round die is constructed by combining so as not to overlap the rotational position of the convex peripheral surface, in the convex peripheral surface combined, the object A plurality of rolled parts separated in the axial direction of the workpiece or the same rolled part of the workpiece Characterized in that so as to perform the rolling process.

The rolling die of the present invention 2 is the present invention 1,
The rolling round dies can be adjusted in the axial direction by sandwiching a position adjusting member having a predetermined size between the two or more round dies.

The rolling die of the present invention 3 is the present invention 1 or 2 ,
The round die body is provided with at least an information code for giving information related to the round die body.

The rolling die of the present invention 4 is the present invention 3 ,
The information code is a two-dimensional code or a barcode.

The rolling die of the invention 5 is the invention 3 or 4 ,
One or more pieces of information data selected from die data, setup position data for each axis, and machining data are recorded in the information code.

The rolling method of the rolling die of the present invention 6 is
In the rolling method of the rolling dies according to the first to fifth aspects of the present invention, the convex outer peripheral surfaces combined so that the positions in the rotation direction do not overlap are combined so that the positions in the rotation direction do not overlap. first a convex outer circumferential surface and the second convex outer peripheral surface, wherein the rolling die in a predetermined direction is rotated at a predetermined speed, said first convex outer peripheral surface the workpiece was a first step of performing a rolling process to be rolling portion, followed by the second convex in a predetermined amount away in the axial direction together in a different angular position from the first convex outer peripheral surface The outer peripheral surface includes at least a second step of performing a rolling process on the rolled part of the workpiece, and the plurality of rolled parts separated in the axial direction of the workpiece or the workpiece It is characterized in that a rolling process can be performed on the same rolled part of the workpiece.

  The rolling die according to the present invention and the rolling method in this rolling die are formed by a single rolling machine on a plurality of rolled parts separated in the axial direction of the workpiece. It is possible to improve productivity. Further, when performing rolling processing on a plurality of rolled portions, productivity is further improved when it is not necessary to move the workpiece in the axial direction. The rolling round die body is formed by combining a plurality of round die bodies. For example, even if one round die body is worn or damaged, only the round die body needs to be replaced. That is, replacement is easy and economical. In addition, since it is possible to process a plurality of rolled parts with a single rolling machine, it is economical without increasing the equipment cost and installation area.

  Since the information about the round die body is given to the round die for rolling with an information code such as a two-dimensional code, the information about the round die for rolling can be directly read. That is, when a plurality of round dies are inserted into the die spindle, the insertion work can be performed while reading information about the round dies. Also, in rolling round dies composed of a combination of multiple round dies, it is easy to set up work such as selection of round dies and selection of rolling processing programs, and prevent occurrence of work errors and human errors. Can do. Furthermore, it is possible to check whether or not the arrangement is the same as the arrangement of the round dies in accordance with the setup order given as parameters in advance.

Embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a plan view showing an outline of a rolling machine equipped with a rolling die of the present invention, FIG. 2 is a plan view of the rolling die of the present invention, and FIG. 3 is a rolling die. FIG. 4-6 is sectional drawing which shows the state which is rolling each rolling part of a workpiece, FIG. 4 is sectional drawing which cut | disconnected FIG. 2 by the AA line, FIG. 2 is a cross-sectional view taken along the line BB, and FIG. 6 is a cross-sectional view taken along the line CC in FIG. FIGS. 7A and 7B are views showing a single round die body of the present invention, in which FIG. 7A is a front view and FIG. 7B is a cross-sectional view.

  The rolling machine 1 is a well-known machine, but will be briefly described in order to facilitate understanding of this embodiment.

  One die main shaft 5 is rotatably supported by a die support 34. One of the die main shafts 5 is transmitted with a driving force of a driving motor (for example, a servo motor) 45 through a universal joint, and rotates at a predetermined rotational speed in the direction around the axis S1 (in the direction of arrow D). One rolling die 10 is inserted into one die main shaft 5. One die spindle 5 is provided with a key. One rolling die 10 is formed with a keyway. The key of one die main shaft 5 is engaged with the key groove of one rolling round die 10 so that the rotational force of one die main shaft 5 is transmitted to one rolling round die 10 via the key. Is done.

  The other die main shaft 6 is rotatably supported by a die support 35. The other die main shaft 6 is rotated at a predetermined rotational speed in the direction around the axis S2 (arrow D direction) by the driving force of the drive motor (for example, servo motor) 46 being transmitted through the universal joint. The other rolling die 20 is inserted into the other die spindle 6. The other die spindle 6 is provided with a key. The other rolling die 20 has a key groove. The key of the other die main shaft 6 is engaged with the key groove of the other rolling round die 20 so that the rotational force of the other die main shaft 6 is transmitted to the other rolling round die 20 via the key. Is done. One die spindle 5 and the other die spindle 6 are rotationally controlled so that they can rotate synchronously.

  The die support 34 is attached to a first support 31 fixed to one side of a bed (not shown). A second support base 32 is provided on the other side of the bed. Guide bodies 36 are provided between the first support base 31 and the second support base 32. The die support 35 is attached to the movable table 33. The moving table 33 is guided by the guide bodies 36 and 36 and moves in the direction of the arrow X via a driving screw 39 that is rotationally driven by a driving motor (for example, a servo motor) 38. That is, the distance between the axes of one die main shaft 5 and the other die main shaft 6 is adjusted.

Between the one die spindle 5 and the other die spindle 6, a spindle stock 40 and a core pusher 41 for supporting the workpiece W are provided.
One rolling die (hereinafter, referred to as one die) 10 and the other rolling die (hereinafter, referred to as the other die) 20 are, for example, a roller used when rolling a screw. It is a tool, and one die 10 and the other die 20 are used in pairs. One die 10 and the other die 20 are preferably made of a material such as die steel or tool steel.

  One die 10 is configured by combining a first round die body 11, a second round die body 12, and a third round die body 13 so as to be juxtaposed in the axial direction of the die main shaft. Hereinafter, description will be given of one die 10 and the other die 20 with the key position of the die spindle 5 as a reference (0 degree), the clockwise direction in FIGS. 3 to 6 as “+”, and the counterclockwise direction “−”. Do.

  The first round die body 11 is provided with a convex outer peripheral surface portion 11a formed in a convex shape from the other outer peripheral surface portion 11c by a predetermined angle α1 (for example, 90 degrees) (see FIG. 4). An uneven rolling surface 11b is formed on the convex outer peripheral surface portion 11a. For example, irregularities for rolling irregularities having leads are formed on the irregular rolling surface 11b of the convex outer peripheral surface portion 11a.

  The second round die body 12 is formed with a convex outer peripheral surface portion 12a that is convex from the other outer peripheral surface portion 12c by a predetermined angle α2 (for example, 90 degrees), and the convex outer peripheral surface portion 12a is uneven. A rolled surface 12b is formed (see FIG. 5). For example, irregularities for rolling irregularities parallel to the axis of the die spindle 5 are formed on the irregular rolling surface 12b of the convex outer peripheral surface portion 12a.

The third round die 13 is formed with a convex outer peripheral surface portion 13a that is convex from the other outer peripheral surface portion 13c by a predetermined angle α3, and the convex outer peripheral surface portion 13a has an uneven rolling surface 13b. It is formed (see FIG. 6). For example, irregularities for rolling irregularities parallel to the axis of the die spindle 5 are formed on the irregular rolling surface 13b of the convex outer peripheral surface portion 13a.
The convex outer peripheral surface portion 11a, the convex outer peripheral surface portion 12a, and the convex outer peripheral surface portion 13a are respectively a first rolled part W1, a second rolled part W2, and a third rolled part that are separated in the axial direction of the workpiece W. It is a part which performs a rolling process to the rolling part W3.

In other words, the first round die body 11, the second round die body 12, and the third round die body 11 so that the first rolled portion W1, the second rolled portion W2, and the third rolled portion W3 can be rolled. The round die body 13 is provided with a convex outer peripheral surface portion 11a, a convex outer peripheral surface portion 12a, and a convex outer peripheral surface portion 13a at predetermined positions in the axial direction.
The first round die body, the second round die body, and the third round die body have substantially the same width dimension (axial dimension) of the convex outer peripheral surface portion and the width dimension (axial dimension) of the die spindle insertion portion. By providing the spacer member (position adjusting member) between the first round die body, the second round die body 12, and the third round die body 13 in the same manner, it corresponds to the axial position of the plurality of rolled parts. As described above, the axial position of the convex outer peripheral surface portion may be adjusted.

  FIG. 3 shows a state in which one die 10 is inserted into one die main shaft 5. The convex outer peripheral surface portion 11a and the convex outer peripheral surface portion 12a are configured to protrude with a predetermined angle β1. The angle β1 portion is an angle of a space where the convex outer peripheral surface portion is not formed. Similarly, the convex outer peripheral surface portion 12a and the convex outer peripheral surface portion 13a are configured to protrude with a shift of a predetermined angle β2. The angle β2 part is an angle of a space where the convex outer peripheral surface part is not formed. The angle α4 part is a part where the convex outer peripheral surface part is not formed on each die of one die 10.

  The other die 20 is formed by combining a first round die body 21, a second round die body 22, and a round die body 23 so as to be arranged in parallel in the axial direction of the die main shaft. The first round die body 21 is provided with a convex outer peripheral surface portion 21a formed in a convex shape from the other outer peripheral surface portion 21c by a predetermined angle α1 (see FIG. 4). An uneven rolling surface 21b is formed on the convex outer peripheral surface portion 21a. For example, irregularities for rolling irregularities with leads are formed on the irregular rolling surface 21b of the convex outer peripheral surface portion 21a.

  The second round die body 22 is formed with a convex outer peripheral surface portion 22a formed in a convex shape from the other outer peripheral surface portion 22c by a predetermined angle α2, and the convex outer peripheral surface portion 22a has an uneven rolling surface 22b. It is formed (see FIG. 5). For example, irregularities for rolling irregularities parallel to the axial direction of the workpiece W are formed on the irregular rolling surface 22b of the convex outer peripheral surface portion 22a.

The third round die body 23 is formed with a convex outer peripheral surface portion 23a that is convex from the other outer peripheral surface portion 23c by a predetermined angle α3, and the convex outer peripheral surface portion 23a has an uneven rolling surface 23b. It is formed (see FIG. 6). For example, irregularities for rolling irregularities parallel to the axial direction of the workpiece W are formed on the irregular rolling surface 23b of the convex outer peripheral surface portion 23a.
The convex outer peripheral surface portion 21a, the convex outer peripheral surface portion 22a, and the convex outer peripheral surface portion 23a are respectively a first rolled portion W1, a second rolled portion W2, and a third rolled portion that are separated in the axial direction of the workpiece W. It is a part which performs a rolling process to the rolling part W3.

In other words, the first round die body 21, the second round die body 22, and the third round die body 21 so that the first rolled portion W1, the second rolled portion W2, and the third rolled portion W3 can be rolled. The round die body 23 is provided with a convex outer peripheral surface portion 21a, a convex outer peripheral surface portion 22a, and a convex outer peripheral surface portion 23a at predetermined positions in the axial direction.
The first round die body, the second round die body, and the third round die body have substantially the same width dimension (axial dimension) of the convex outer peripheral surface portion and the width dimension (axial dimension) of the die spindle insertion portion. By providing the spacer member (position adjusting member) between the first round die body, the second round die body 12, and the third round die body 13 in the same manner, it corresponds to the axial position of the plurality of rolled parts. As described above, the axial position of the convex outer peripheral surface portion may be adjusted.

  FIG. 3 shows a state where the other die 20 is inserted into the other die spindle 6. The convex outer peripheral surface portion 21a and the convex outer peripheral surface portion 22a are configured to protrude with a predetermined angle β1. The angle β1 portion is an angle of a space where the convex outer peripheral surface portion is not formed. Similarly, the convex outer peripheral surface portion 22a and the convex outer peripheral surface portion 23a are configured to protrude with a shift of a predetermined angle β2. The angle β2 part is an angle of a space where the convex outer peripheral surface part is not formed. The angle α4 portion is a portion where the convex outer peripheral surface portion is not formed on each die of the other die 20.

The round die body will be further described with reference to FIG.
The round die body 50 is provided with an inner peripheral portion 52 for insertion into the die spindle and a key groove 53 for engaging with a key of the die spindle. The round die body 50 is provided with a convex outer peripheral surface portion 51 at a predetermined angular position (a position between 90 degrees and 180 degrees in FIG. 7) with respect to the center position of the key groove 53. An uneven rolling surface 51 a is formed on the convex outer peripheral surface portion 51.

Further, the end face of the round die body 50 is provided with data relating to a rolling machine, a rolling round die, and the like as a two-dimensional code 54, a bar code, and the like. Data related to rolling machines, rolling dies, etc. includes setup data and processing data.
The setup data is die data and setup position data for each axis. Examples of the die data include a die outer diameter, a die width, pitch data, a die data program number, and a die start angle. The setup data includes, for example, a setup position of a die spindle, a tilt angle of the spindle, setup position data between spindles, and a setup conveyance position of a workpiece. The machining data is obtained by adding the operation of each axis to the setup data. The machining data includes, for example, a die pushing position and speed data, a rotation speed, a workpiece conveyance position and speed data, and the like.
The two-dimensional code 54 may be obtained by converting the above-described data into a two-dimensional code with a two-dimensional code generator and laser marking the end face of the round die 50. Alternatively, a two-dimensionally coded product may be printed and attached to the end face of the round die body 50.

  When an operator causes the two-dimensional code reading device (not shown) to read the two-dimensional code 54, the above-described data of the round die body 50 is displayed on a display unit (not shown). In particular, an operator such as a two-dimensional code can check the information data, and can select a desired round die body from many round die bodies without making a mistake. In addition, since the die data program number, rolling process data, and the like are recorded, it is possible to suppress the occurrence of work mistakes and human error. In other words, the operator only needs to perform the work of inserting into the die spindle while confirming the information of the round die body. This is suitable when a plurality of round dies are combined to form a pair of dies. Further, it may be possible to check in advance whether or not the arrangement of the round dies according to the setup order given as parameters is the same.

  The two-dimensional code may be a QR code, a data code, a veri code, a maxi code, or the like. In addition, the two-dimensional code may be a multilayer type, a color code, an RFID code, or the like.

Next, a rolling method using this rolling die will be described.
The first round die body 11, the second round die body 12, and the third round die body 13 for rolling the rolled portions W1 to W3 of the workpiece W are inserted into one die main spindle 5. .
A first round die body 21, a second round die body 22, and a third round die body 23 for rolling the rolled parts W1 to W3 of the workpiece W are inserted into the other die spindle 6. .

  A key provided on one of the die spindles 5 is engaged with a key groove of the first round die body 11, the second round die body 12, and the third round die body 13. Further, the key provided on the other die spindle 6 is engaged with the key grooves of the first round die body 21, the second round die body 22, and the third round die body 23. Thus, the rotational force of one die main shaft 5 and the other die main shaft 6 can be transmitted to one die 10 and the other die 20.

Further, as shown in FIG. 3, one of the dice 10 including the first round die body 11, the second round die body 12, and the third round die body 13 has a convex outer peripheral surface portion 11a every approximately (90 + β) degrees. 12a and 13a are provided.
Similarly, the other die 20 including the first round die body 21, the second round die body 22, and the third round die body 23 is provided with convex outer peripheral surface portions 21a, 22a, and 23a at approximately (90 + β) degrees. ing.

  After the setup is completed, the rolling machine 1 (see FIG. 1) is operated. The NC device of the rolling machine 1 drives the drive motors 45 and 46 to rotate one die main shaft 5 and the other die main shaft 6 at a predetermined rotational speed. The NC device performs rotational drive control in synchronization with one die spindle 5 and the other die spindle 6. The drive motor 38 is driven in accordance with the rotational position of one die main shaft 5 and the other die main shaft 6 output from a rotational position sensor (not shown) of one die main shaft 5 and the other die main shaft 6, and the other The die main shaft 6 is moved toward and away from the one die main shaft 5 by a predetermined amount.

  When the one die main shaft 5 and the other die main shaft 6 are at the angle α4 position, the NC device of the rolling machine 1 drives the drive motor 38 so that one die main shaft 6 approaches the other die main shaft 5 side. Move in the direction you want. As shown in FIG. 4, the first outer peripheral surface portion 11 a of the first round die body 11 and the convex outer peripheral surface portion 21 a of the first round die body 21 press the first rolled portion W <b> 1 of the workpiece W. Thus, a rolling pressure is applied to the first rolled part W1. Concavities and convexities (for example, concavities and convexities with leads) of the convex and concave rolled surfaces 11b and 12b of the convex outer peripheral surface portions 11a and 21a are rolled on the first rolled portion W1.

  When one die main shaft 5 and the other die main shaft 6 are further rotated, the convex outer peripheral surface portion 12a of the second round die body 12 and the convex outer peripheral surface portion 22a of the second round die body 22 are rotated. The second rolled part W2 is pressed to apply a rolling pressure to the second rolled part W2 (see FIG. 5). Concavities and convexities (for example, concavities and convexities parallel to the axial direction of the workpiece) of the convex and concave rolled surfaces 12 b and 22 b of the convex outer peripheral surface portions 12 a and 22 a are rolled on the second rolled portion W2.

  When the one die main shaft 5 and the other die main shaft 6 are further rotated, the convex outer peripheral surface portion 13a of the third round die body 13 and the convex outer peripheral surface portion 23a of the third round die body 23 are rotated. The third rolled part W3 is pressed to apply a rolling pressure to the third rolled part W3 (see FIG. 6). Concavities and convexities (for example, concavities and convexities parallel to the axial direction of the workpiece) of the convex and concave rolled surfaces 13b and 23b of the convex outer peripheral surface portions 13a and 23a are rolled on the third rolled portion W3.

  At this time, there is a space corresponding to an angle β1 between the convex outer peripheral surface portions 11a and 21a of the first round die bodies 11 and 21 and the convex outer peripheral surface portions 12a and 22a of the second round die bodies 12 and 22. Therefore, the rolling of the first rolled part W1 and the rolling of the second rolled part W2 do not occur simultaneously. Since there is a space of angle β2 between the convex outer peripheral surface portions 12a, 22a of the second round die bodies 12, 22 and the convex outer peripheral surface portions 13a, 23a of the third round die bodies 13, 23, the first The rolling of the second rolled part W2 and the rolling of the third rolled part W3 do not occur simultaneously. Note that. If the convex outer peripheral surface portion of each die is configured so that the convex outer peripheral surface portion of each die does not overlap as in this embodiment, it is preferable because the rolling processing accuracy of each die will not be affected.

When one die main shaft 5 and the other die main shaft 6 are at the angle α4 position, the drive motor 38 is driven, and the other die main shaft 6 is moved away from the one die main shaft 5 side.
As described above, the first rolled part W1, the second rolled part W2, and the third rolled part separated in the axial direction of the workpiece W while the one die spindle 5 and the other die spindle 6 rotate once. The rolling process of the part to be rolled W3 can be performed.

  In addition, the predetermined | prescribed angle of the convex outer peripheral part of a round die body should just be the range of 20-240 degree | times, for example. It is a premise that such a rolling process can be performed such that the diameter of the convex outer peripheral surface portion of the round die body is larger than the diameter of the outer peripheral portion of the workpiece, and is preferably 3 to 20 times, for example. . That is, in order to roll the rolled part of the work piece, the diameter of the round die body is set at a predetermined angle so that the dimensions of the outer peripheral surface part that can be rolled, for example, 3 to 6 can be secured. And so on.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to this embodiment. Needless to say, changes can be made without departing from the scope and spirit of the present invention. For example, the rolling round die may be composed of two round die bodies and four or more round die bodies. Moreover, the rolling round die may be formed by rolling the same unevenness on a plurality of rolled portions separated in the axial direction of the workpiece. Furthermore, the rolling process may be performed a plurality of times with a plurality of round dies on the same rolled part. For example, processing may be performed in several rounds with round dies having different shapes.

Further, the rolling machine may have a configuration in which the workpiece can be moved in the axial direction of the workpiece. That is, after rolling a predetermined rolled part, the work piece may be moved in the axial direction, and the next rolled part may be rolled. If the rolling part of the work piece is moved in the axial direction and interference with the round die body can be avoided, the rolling process is performed on a plurality of rolled parts due to the difference in the outer diameter of the convex outer peripheral surface. Can do. Furthermore, the rolling process of the same rolled part may be performed by a plurality of round dies and movement of the workpiece in the axial direction. For example, the rolling process may be performed like a rough rolling process, a medium finish rolling process, or a finish rolling process.
In addition, the rolling machine is configured to perform so-called reciprocal rolling, in which rolling is performed by rotating a round die in the forward and reverse directions while maintaining the synchronization of rotation of one die spindle and the other die spindle. May be.

FIG. 1 is a plan view schematically showing a state in which a workpiece is rolled by the rolling die of the present invention. FIG. 2 is a plan view of the rolling die of the present invention. FIG. 3 is a front view of a round die for rolling. FIG. 4 is a cross-sectional view showing a state where the first rolled portion of the workpiece is being rolled, and is a cross-sectional view taken along line AA in FIG. FIG. 5 is a cross-sectional view showing a state where the second rolled portion of the workpiece is being rolled, and is a cross-sectional view taken along line BB in FIG. FIG. 6 is a cross-sectional view showing a state where the third rolled portion of the workpiece is being rolled, and is a cross-sectional view taken along line CC of FIG. FIGS. 7A and 7B are views showing the rolling die of the present invention as a single unit, where FIG. 7A is a front view and FIG. 7B is a cross-sectional view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Rolling machine 5 ... One die main axis | shaft 6 ... The other die main axis | shaft 10 ... One rolling round die 11 ... One first round die body 11a ... Convex outer peripheral surface part 12 ... One second round die body 12a ... convex outer peripheral surface portion 13 ... one third round die body 13a ... convex outer peripheral surface portion 20 ... other rolling round die 21 ... other first round die body 21a ... convex outer peripheral surface portion 22 ... other Two round die bodies 22a ... convex outer peripheral surface portion 23 ... the other third round die body 23a ... convex outer peripheral surface portion 50 ... round die body 51 ... convex outer peripheral surface portion 51a ... irregularities for rolling 53 ... key groove 54 ... two Dimension code W ... Workpiece

Claims (6)

It is detachably attached to the rolling tool spindle of the rolling machine, is rotated about the rolling tool spindle and presses the outer peripheral surface of the rotatable workpiece, and is formed on the outer peripheral surface. A rolling die for rolling irregularities of a predetermined shape on the outer peripheral surface of the workpiece,
The rolling round dies are two or more round dies arranged side by side in the axial direction of the rolling tool spindle,
The cylindrical die body only for a predetermined angle, has a convex outer circumferential surface formed in a convex shape from the other of the outer circumferential surface state, and are not the irregularities are formed on the convex peripheral surface,
The rolling round dies are configured in combination so that the positions of the convex outer peripheral surfaces in the rotational direction do not overlap, and a plurality of the convex outer peripheral surfaces are separated in the axial direction of the workpiece. A rolling die for rolling , wherein a rolling process can be performed on a rolled part or on the same rolled part of the workpiece . In the round die for rolling according to claim 1,
The rolling round die is capable of adjusting the position in the axial direction by sandwiching a position adjusting member having a predetermined dimension between the two round die bodies. Round dies. In the round die for rolling according to claim 1 or 2,
A round die for rolling, wherein the round die body is provided with at least an information code for imparting information on the round die body . In the round die for rolling according to claim 3,
The rolling die for rolling , wherein the information code is a two-dimensional code or a bar code . In the round die for rolling according to claim 3 or 4,
The information code includes
One or more pieces of information data selected from die data, setup position data for each axis, and machining data are recorded . A rolling method for a round die for rolling according to any one of claims 1 to 5 ,
The convex outer peripheral surfaces combined so that the positions in the rotational direction do not overlap are the first convex outer peripheral surface and the second convex outer peripheral surface combined so that the positions in the rotational direction do not overlap ,
A first step in which the rolling die is rotated at a predetermined speed in a predetermined direction, and the first convex outer peripheral surface performs a rolling process on a rolled portion of the workpiece ;
Subsequently, the second convex outer peripheral surface at a different angular position from the first convex outer peripheral surface and at a position separated by a predetermined amount in the axial direction is transferred to the rolled part of the workpiece. And at least a second step of performing fabrication processing ,
A rolling die having a plurality of rolling parts separated in the axial direction of the workpiece or the same rolling part of the workpiece can be rolled. Rolling process .

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