Form rolling device

Abstract

To provide a form rolling device capable of highly accurately and stably molding a male screw.SOLUTION: A form rolling device 1 includes: a moving die 4 reciprocated in a form rolling direction; a fixing die 3 disposed so as to be converted in a position along an opposite direction; a position conversion pullout bolt 31 and a position conversion pressing bolt 32 for converting a position of the fixing die 3 in the opposite direction by manual operation; an opposite position detection sensor for detecting a position in the opposite direction of the fixing die 3; and a touch panel 37 for notifying first to third present position information detected by the opposite position detection sensor, and previously set first to third set position information. The device allows an operator to adjust a position in the opposite direction of the fixing die 3 while confirming the touch panel 37.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a rolling device used in rolling processing. [Background technology]

[0002] A known rolling device has a fixed die provided along the rolling direction and a movable die provided so as to be reciprocally movable in the rolling direction, and the reciprocating movement of the movable die rolls a blank material sandwiched between the movable die and the fixed die. Patent Document 1, for example, proposes a rolling monitoring device to be provided in such a rolling device. This rolling monitoring device monitors the rolling pressure applied to the blank material being rolled and determines whether the rolling has been performed appropriately. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-175576 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, there are standards for male screws that stipulate the outer diameter, pitch, etc., and these standards stipulate a plurality of male screws with different outer diameters. When rolling such a plurality of male threads using the rolling device, it is necessary to adjust the distance (relative position) between the fixed die and the movable die according to the outer diameter of each male thread, and this adjustment requires high precision. However, in the past, the task of positioning the fixed die and the movable die relative to each other relied on the experience and intuition of the worker, resulting in problems such as relatively large variations in product precision depending on the worker and an increased burden on the worker for the positioning task.

[0005] The present invention proposes a rolling device that can form male threads of various standards with high precision and stability. [Means for solving the problem]

[0006] The present invention provides a rolling device comprising: a fixed die having a rolling surface portion along a rolling direction and fixed so as not to move in the rolling direction during rolling; and a movable die having a rolling surface portion opposite to the rolling surface portion of the fixed die and arranged so as to be movable back and forth in the rolling direction, wherein a blank material sandwiched between the rolling surface portion of the movable die and the rolling surface portion of the fixed die is rolled by the reciprocating movement of the movable die. At least one of the fixed die and the movable die is arranged so as to be positionally changeable along an opposing direction in which the rolling surface portions face each other, and the rolling device comprises an opposing position changing means for manually changing the relative positions of the fixed die and the movable die in the opposing direction; This rolling device comprises an opposing position detection sensor that detects the relative position in the opposing direction between the die and the movable die, a position output means that outputs the relative position in the opposing direction detected by the opposing position detection sensor, and an information storage means that stores pre-processing position information in the opposing direction used for relative positioning of the fixed die and the movable die before rolling processing, wherein the position output means sequentially reports detected opposing position information based on the relative position in the opposing direction detected by the opposing position detection sensor in accordance with position conversion by the opposing position conversion means, and is also equipped with an opposing position information notification means that reports the pre-processing position information of the information storage means.

[0007] Here, the relative position refers to the relative position between the fixed die and the movable die, and the relative position in the facing direction refers to the relative position between the fixed die and the movable die in the facing direction. The pre-processing position information is information indicating the relative positions in the opposing direction for determining the relative positioning of the fixed die and the movable die before the start of the rolling process, and can be information (initial position information) that is set and stored in advance according to the specifications (dimensions) of the product to be rolled, and / or information (set position information) that is set by a specific worker (such as a skilled worker) before the rolling process. Here, the product specifications (dimensions) can be set, for example, in the case of a male screw, by the nominal diameter, outer diameter, pitch, and thread dimensions of the screw. Furthermore, the detected opposing position information notified by the opposing position information notifying means may be information directly indicating the relative position in the opposing direction, or may be pre-processing position information or position information relative to a predetermined reference position. Such detected opposing position information or pre-processing position information can be set appropriately as information displayed on a monitor, information output by a predetermined sound or light, or the like, and for example, numerical data or diagram data indicating the information can be suitably used as the information displayed on a monitor.

[0008] In the configuration of the present invention, an operator can manually operate the facing position changing means to change the relative positions of the fixed die and the movable die in the facing direction, thereby adjusting the gap between the rolling surfaces. This manual operation is performed in accordance with the detected facing position information and pre-machining position information reported by the facing position information reporting means, allowing the relative positions in the facing direction to be changed and adjusted with high precision in accordance with the pre-machining position information, and this high-precision adjustment can be performed stably. Furthermore, this adjustment can be performed without relying on the operator's experience or intuition, reducing the operator's burden for the adjustment. As a result, different operators can produce products of the same quality, minimizing variations in quality among different operators. Furthermore, the configuration of the present invention allows operators to manually operate the facing position changing means to change and adjust the relative positions of the fixed die and the movable die in the facing direction, thereby improving their skills in adjusting the relative positions. This assistance to the operator's work also has the excellent advantage of allowing for skill training through actual work.

[0009] According to the configuration of the present invention, the relative positions of the fixed die and the movable die in their opposing directions can be adjusted with high precision and stability in accordance with the pre-processing position information stored in the information storage means, making it possible to stably form high-quality products that meet product standards. In other words, when rolling a male thread, the relative positions of the fixed die and the movable die in their opposing directions can be positioned with a distance between the rolling surfaces that is appropriate for the standard of the male thread, making it possible to stably form a male thread that meets the product standards by rolling.

[0010] In addition, in the rolling device of the present invention, it is preferable that the information storage means stores multiple pieces of pre-machining position information associated with multiple products of different specifications (dimensions), and the position output means reports information selected from the multiple pieces of pre-machining position information using the corresponding position information notification means. With this configuration, the relative positions of the fixed die and the movable die in the opposing direction can be adjusted with high precision and stability according to each of the different pieces of pre-machining position information. Furthermore, the adjustment of the relative positions according to each piece of pre-machining position information can be performed without relying on the experience or intuition of the operator, and the burden required for the adjustment work can be reduced. Therefore, with this configuration, rolling processes according to different product specifications can be performed, and desired products of different product specifications can be stably formed. [Effects of the Invention]

[0011] As described above, in the rolling device of the present invention, the relative positions of the fixed die and the movable die in the opposing direction can be easily adjusted with high precision in accordance with the pre-processing position information, and the desired product can be stably formed by rolling. Furthermore, since the relative positions of the fixed die and the movable die can be adjusted to the same position in accordance with the product specifications regardless of the operator, products of the same quality can be stably formed, and these dies can be used stably over a long period of time, contributing to a longer life of the dies. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a perspective view showing a rolling device 1 of an embodiment according to the present invention, viewed from the fixed die 3 side. [Figure 2] FIG. 2 is a perspective view showing the rolling device 1 from the side of the movable die 4. [Figure 3] FIG. 2 is an enlarged plan view of a fixed die 3. [Figure 4] 1 is an explanatory diagram showing a mode in which a blank 9 is rolled by a rolling device 1. FIG. [Figure 5] FIG. 2 is a schematic diagram showing a position detection device 35 that detects the position of the fixed die 3. [Figure 6]3 is an explanatory diagram showing a display mode of a touch panel 37. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0013] An embodiment of the present invention will be described with reference to the accompanying drawings. 1 and 2, the rolling device 1 of this embodiment includes a fixed die 3 and a movable die 4 on a base table 2, and the movable die 4 is movable in one direction (hereinafter referred to as the rolling direction). The fixed die 3 and the movable die 4 each include a rolling surface 11, 21 that is approximately parallel to the rolling direction. As the movable die 4 moves in the rolling direction, the rolling surfaces 11, 21 of the fixed die 3 and the movable die 4 pass each other, and are converted between a state in which the entire or part of the rolling surfaces 11, 21 face each other and a state in which they are spaced apart in the rolling direction. The rolling device 1 of this embodiment rolls male threads using the fixed die 3 and the movable die 4.

[0014] In this embodiment, the direction in which the rolling surface 11 of the fixed die 3 and the rolling surface 21 of the movable die 4 face each other is referred to as the facing direction. This facing direction is perpendicular to both the rolling direction and the up-down direction.

[0015] The fixed die 3 is fixed to the die block 25 by a clamping means (not shown). The die block 25 is fastened to the base table 2 by fastening bolts 10, 10, and with the fastening bolts 10, 10 fastened, the die block 25 is immovably fixed to the base table 2 together with the fixed die 3.

[0016] The movable die 4 is immovable in the vertical and horizontal directions, and is movable back and forth in the rolling direction by a guide rail (not shown) arranged on the base table 2 along the rolling direction. A drive control device (not shown) is arranged on the base table 2, and the reciprocating movement of the movable die 4 is controlled by the drive control device.

[0017] The movable die 4 is stopped at a movement reference position located on one side of the rolling direction relative to the fixed die 3 while not moving in the rolling direction (FIGS. 1 and 2), and is moved back and forth from this movement reference position. This movement reference position is set at a position where one side end of the fixed die 3 and the other side end of the movable die 4 are separated in the rolling direction, and the rolling surfaces 11, 21 of both are misaligned in the rolling direction. During rolling, the movable die 4 is moved to perform the rolling process, and then the movable die 4 is returned to the movement reference position. Furthermore, the configuration of this embodiment is provided with a correction bolt (not shown) for adjusting the position of the movable die 4 in the rolling direction, and the position of the movable die 4 is adjusted as a preparatory step for rolling. In this preparation work, the worker operates the correction bolt to adjust the position of the movable die 4 in the rolling direction, thereby aligning the pitch of the screw formed on the rolling surface portion 11 of the fixed die 3 with the pitch of the screw formed on the rolling surface portion 21 of the movable die 4.

[0018] A guide path section 19 is provided on one side of the fixed die 3 for feeding the blank 9 between the fixed die 3 and the movable die 4. In the rolling device 1 of this embodiment, the blank 9 fed by this guide path section 19 is pressed between the rolling surface section 11 of the fixed die 3 and the rolling surface section 21 of the movable die 4, as shown in Figure 4, and the moving die 4 is rotated to advance the blank 9 in the rolling direction, thereby performing the rolling process. In the rolling device 1 of this embodiment, a male thread is formed by rolling the blank 9, which has a substantially round bar shape.

[0019] In this embodiment, the configuration for moving the movable die 4 back and forth (guide rails, drive control device, etc.), the configuration for adjusting the position of the movable die 4 to adjust the pitch, and the rolling surface portions 11, 21, etc. can be configured as conventionally known configurations, so details thereof will be omitted.

[0020] Next, the main part of the present invention will be described. 1 and 2, in this embodiment, a block position reference portion 26 is provided on the base table 2 to which the die block 25 is attached so as to be movable in the opposing direction. The die block 25 is movable in the opposing direction relative to the block position reference portion 26 (base table 2) when the fastening bolts 10 are loosened, and can slide in the opposing direction in this state. As a result, with the fixed die 3 fixed to the die block 25, the fixed die 3 and the die block 25 can be moved together in the opposing direction.

[0021] Position conversion drawing bolts 31, 31 are provided at positions near both ends in the rolling direction of the block position reference portion 26. Position conversion press bolts 32, 32 are provided in parallel above and below at positions on both ends of each position conversion drawing bolt 31. These position conversion drawing bolts 31 and position conversion press bolts 32 are provided in opposing directions.

[0022] The position conversion drawing bolts 31 are rotatably attached to the block position reference portion 26, with their tips projecting further toward the die block 25 than the block position reference portion 26 and screwed into the die block 25. By rotating the position conversion drawing bolts 31 in one direction (for example, to the left), the die block 25 can be moved in the opposite direction away from the movable die 4. Each position conversion drawing bolt 31 can be rotated individually, and by rotating each of them, the positions near both ends of the die block 25 (fixed die 3) in the rolling direction can be changed in the opposite direction away from the movable die 4.

[0023] The position conversion press bolt 32 is rotatably attached to the block position reference portion 26, and its tip protrudes toward the die block 25 beyond the block position reference portion 26 and abuts against the die block 25. By rotating this position conversion press bolt 32 in one direction (for example, to the right), the die block 25 can be pressed and moved in the opposite direction toward the movable die 4. Each position conversion press bolt 32 can be rotated individually, and by rotating each of them, the positions near both ends of the die block 25 (fixed die 3) in the rolling direction can be changed in the opposite direction toward the movable die 4.

[0024] Furthermore, since a commonly used mechanism can be applied to the mechanism for adjusting the position of the die block 25 (fixed die 3) in the opposing direction by appropriately rotating these two position change drawing bolts 31 and four position change pressing bolts 32, details thereof will be omitted.

[0025] Furthermore, the block position reference section 26 is provided with opposing position detection sensors 33, 33 at locations near both ends in the rolling direction, which detect the opposing positions (hereinafter referred to as opposing direction positions) of the die block 25 (fixed die 3) (see FIG. 5). These opposing position detection sensors 33, 33 detect the locations near both ends in the rolling direction of the fixed die 3, respectively. This makes it possible to detect the opposing positions of the locations near both ends of the fixed die 3.

[0026] In this embodiment, the fixed die 3 is provided so as to be slidable in the rolling direction relative to the block position reference portion 26 when the fastening bolts 10, 10 are loosened. An adjustment bolt (not shown) is provided on the block position reference portion 26 to change the position of the fixed die 3 in the rolling direction, and the fixed die 3 can be slid in the rolling direction by rotating the adjustment bolt. A rolling position detection sensor 34 is provided on the block position reference portion 26 to detect the position of the fixed die 3 in the rolling direction (hereinafter referred to as the rolling direction position) (see FIG. 5).

[0027] In this way, with the fastening bolts 10, 10 loosened, the fixed die 3 of this embodiment can be changed in position in the opposing direction by rotating the position change drawing bolt 31 and the position change pressing bolt 32, and can also be changed in position in the rolling direction by rotating the adjustment bolt. Then, by fastening the fastening bolts 10, 10, the fixed die 3 can be positioned and fixed.

[0028] 5, the rolling device 1 of this embodiment is provided with a position detection device 35 having the opposing position detection sensors 33, 33 and the rolling position detection sensor 34. The position detection device 35 is provided with a control PC 36 and a touch panel 37, and signals detected by the opposing position detection sensors 33, 33 and the rolling position detection sensor 34 are input to the control PC 36. The control PC is provided with a central control unit and a storage device, and controls the display of the touch panel 37.

[0029] The storage device of the control PC 36 stores first to third initial position information indicating the position of the fixed die 3 (die block 25) at which the rolling process starts (hereinafter referred to as the processing start position). Here, the first to third initial position information is basic information stored in advance based on the nominal diameter of the screw to be rolled, and by positioning the fixed die 3 (die block 25) in accordance with this information and performing the rolling process, a screw can be formed that meets the nominal diameter standard. In this embodiment, the storage device of the control PC stores first to third initial position information corresponding to each nominal diameter for each of a plurality of screw nominal diameters.

[0030] The first and second initial position information are information indicating the opposing direction position at which the rolling process is to be started, and are set to correspond to the portions of the die block 25 (fixed die 3) near both ends in the rolling direction, respectively. The third initial position information is information indicating the rolling direction position at which the rolling process is to be started. In this embodiment, the first and second initial position information are information indicating the opposing direction position relative to a predetermined reference position (the distance in the opposing direction from the reference position), and the third initial position information is information indicating the rolling direction position relative to the reference position (the distance in the rolling direction from the reference position).

[0031] Furthermore, the storage device of the control PC can store first to third set position information set by an operator. The first to third set position information is information indicating the processing start position of the fixed die 3 at which rolling processing begins, and is information indicating positions different from the first to third initial position information. Here, the rolling process is generally affected by the environment of the processing location (temperature, humidity, etc.) and the properties of the base material (strength, residual strain, etc.). In addition, mechanical devices are provided with a certain amount of play in their operating mechanisms. Therefore, if the fixed die 3 is positioned solely using first to third initial position information based on product standards, there is a limit to the processing accuracy. Therefore, to perform high-precision rolling, it is necessary for a skilled worker or the like to set the processing start position of the fixed die 3 based on the first to third initial position information. In this embodiment, the processing start position of the fixed die 3 adjusted by a skilled worker or the like can be stored as first to third set position information associated with the nominal diameter of the screw (product standard). As a result, by changing the position of the fixed die 3 (die block 25) according to this first to third set position information, rolling can be performed with the same accuracy as a skilled worker. Note that in this embodiment, the storage device can store first to third set position information for each product standard, and can also store multiple first to third set position information for the same standard.

[0032] As shown in FIG. 6 , the touch panel 37 displays information indicating the processing start position of the fixed die 3 at which the rolling process begins, under the display control of the control PC. In this embodiment, the touch panel 37 includes a nominal diameter display unit 41 that selectively displays the nominal diameter of a thread for which the first to third initial position information has been pre-stored; first to third reference position display units 42a to 42c that display the first to third initial position information or the first to third set position information, respectively; and first to third current value display units 43a to 43c that display the first to third current position information of the fixed die 3. The touch panel 37 is the same as commonly used touch panels and can be operated by an operator by touching a predetermined portion. Specifically, the operator can select and display one of a plurality of pre-set nominal diameters by touching the nominal diameter display unit 41. The first to third initial position information or the first to third set position information associated with the nominal diameter selected by this operation is then displayed in the first to third reference position display units 42a to 42c, respectively. In this embodiment, the first to third reference position display sections 42a to 42c can selectively display the first to third initial position information and the first to third set position information. This selective display can be performed by an operator operating the touch panel 37. Usually, an operator performing rolling displays the first to third set position information, while a specific operator (an experienced operator) displays the first to third initial position information when newly setting or updating the first to third set position information.

[0033] The first and second current position information displayed on the first and second current value display units 43a and 43b, respectively, is position information obtained based on the signals detected by the opposing position detection sensors 33 and indicates the position in the opposing direction relative to the reference position (the distance in the opposing direction from the reference position). As a result, the first current value display unit 43a displays first current position information for a portion of the fixed die 3 near one end in the rolling direction, while the second current value display unit 43b displays second current position information for a portion of the fixed die 3 near the other end in the rolling direction. The first current position information displayed on the first current value display unit 43a and the first initial position information or first set position information displayed on the first reference position display unit 42a are information for a portion of the fixed die 3 near one end in the rolling direction, and the second current position information displayed on the second current value display unit 43b and the second initial position information or second set position information displayed on the second reference position display unit 42a are information for a portion of the fixed die 3 near the other end in the rolling direction.

[0034] The third current position information displayed on the third current value display unit 43c is position information obtained based on the signal detected by the rolling position detection sensor 34, and indicates the position in the rolling direction relative to the reference position (the distance in the rolling direction from the reference position).

[0035] The first to third current value display units 43a to 43c update and display the first to third current position information each time there is a change in the signals input to the control PC 36 from the opposing position detection sensors 33, 33 and the rolling position detection sensor 34. As a result, the first to third current value display units 43a to 43c successively display information that accurately indicates the current position of the fixed die 3.

[0036] Next, we will explain the procedure for adjusting the position of the fixed die 3 to match the product specifications (nominal diameter of the screw) before rolling. Generally, before adjusting the position of the fixed die 3, the position of the movable die 4 is adjusted to match the pitch as described above. The position adjustment procedure for this movable die 4 will be omitted.

[0037] The worker operates the touch panel 37 to display information necessary for adjusting the position of the fixed die 3, as shown in Fig. 6. Then, the worker touches the nominal diameter display section 41 to select and display the nominal diameter of the male thread to be rolled. Accordingly, first to third set position information associated with the selected nominal diameter are displayed in the first to third reference position display sections 42a to 42c of the touch panel 37, respectively. Furthermore, the first to third current value display sections 43a to 43c display first and second current position information in the facing direction and third current position information in the rolling direction, respectively, based on the signals input to the control PC 36 from the facing position detection sensors 33 and the rolling position detection sensor 34.

[0038] Here, when a worker performs the rolling process, first to third set position information set in advance by a specific worker is displayed on the first to third reference position display areas 42a to 42c of the touch panel 37. This allows any worker to adjust the position of the fixed die 3 using the first to third set position information as a reference.

[0039] The operator loosens the fastening bolts 10, 10 that secure the fixed die 3, allowing the fixed die 3 to slide in the facing direction and the rolling direction. Then, the operator rotates the position conversion drawing bolt 31 and the position conversion pressing bolt 32 so that the first and second set position information displayed on the first and second reference position display units 42a, 42b, respectively, coincides with the first and second current position information displayed on the first and second current value display units 43a, 43b, respectively. Furthermore, the operator rotates the adjustment bolt so that the third set position information displayed on the third reference position display unit 42c coincides with the third current position information displayed on the third current value display unit 43c. Once the first to third set position information and the first to third current position information are aligned, respectively, the operator tightens the fastening bolts 10, 10 to secure the fixed die 3. This allows the starting position of the fixed die 3 to be positioned to match the nominal diameter of the screw.

[0040] Before the rolling process is performed by such an operator, a specific operator (such as an experienced operator) sets first to third set position information. In this process, first to third initial position information is displayed on the first to third reference position display areas 42a to 42c of the touch panel 37, and the position conversion drawing bolt 31, the position conversion pressing bolt 32, and the adjustment bolt are operated based on the first to third initial position information. This sets first to third set position information indicating the optimum processing start position of the fixed die 3 for the target product and stores it in the storage device of the control PC 36. When updating the first to third set position information, the already stored first to third set position information can be displayed on the first to third reference position display areas 42a to 42c, and the processing start position of the fixed die 3 can be newly set and stored. Furthermore, in this embodiment, if the first to third set position information is set by the specific worker (skilled worker), the differences (differences) between the first to third set position value information and the first to third initial position information can be obtained as numerical values, which can be effectively used as a means for confirming the experience and intuition of the specific worker as numerical values. This means can also be used as a tool for skill transfer and skill training.

[0041] As described above, the rolling device 1 of this embodiment is configured to display preset first to third set position information and first to third current position information of the fixed die 3 (die block 25) on the touch panel 37, allowing the operator to adjust the position of the fixed die 3 while viewing this information. This allows the operator to accurately and easily adjust the position of the fixed die 3 to the processing start position (the position where the rolling process begins) appropriate for the male thread to be rolled, without relying on experience or intuition. Furthermore, in this embodiment, multiple preset first to third set position information is selected and displayed according to the male thread to be rolled, allowing for stable formation of male threads that meet product specifications. Furthermore, since this embodiment has a function to assist the operator in adjusting the position of the fixed die 3, skill training can be conducted through the actual work of this position adjustment. This allows for efficient skill improvement of operators and is also useful for skill transfer.

[0042] Furthermore, in this embodiment, a specific worker stores the first to third preset position information, which indicates the starting position of the fixed die 3 for rolling, more suitable for the rolling process than the first to third initial position information based on the product standard (nominal diameter). This allows the worker to set the first to third preset position information indicating the starting position of the fixed die 3. This allows the fixed die 3 to be adjusted to the optimal starting position, which is set based on not only the product standard but also the manufacturing environment and the properties of the base material. This allows any worker to easily and stably produce high-quality products.

[0043] In this embodiment, the position change drawing bolts 31 and the position change pressing bolts 32 that move the fixed die 3 in the opposing direction are provided at positions near both ends in the rolling direction, and the opposing position detection sensors 33, 33 that detect the opposing position of the fixed die 3 are used to detect the positions near both ends of the fixed die 3. This makes it possible to adjust the opposing position of the fixed die 3 more accurately.

[0044] In the configuration of the present embodiment described above, the position conversion drawing bolt 31 and the position conversion press bolt 32 correspond to the opposing position conversion means of the present invention, and the rotation operation of the position conversion drawing bolt 31 and the position conversion press bolt 32 by the operator corresponds to the manual operation of the present invention. The control PC 36 and the touch panel 37 correspond to the position output means of the present invention. The storage device of the control PC 36 corresponds to the information storage means of the present invention. The first and second initial position information and the first and second set position information correspond to the pre-machining position information of the present invention. The touch panel 37 corresponds to the opposing position information informing means of the present invention, and the first and second current position information correspond to the detected opposing position information of the present invention.

[0045] The present invention is not limited to the above-described embodiments, and can be modified as appropriate within the scope of the present invention. For example, the dimensions and shapes of the components constituting the rolling device 1 can be modified as appropriate.

[0046] In the above-described embodiment, the position conversion drawing bolt and the position conversion press bolt are respectively provided near both ends of the fixed die, but this is not limiting, and the arrangement positions and number of these position conversion drawing bolts and position conversion press bolts can be changed as appropriate. For example, one position conversion drawing bolt and one position conversion press bolt may be provided approximately at the center of the fixed die in the rolling direction, and the opposing positions of the fixed die can be adjusted by rotating these. Alternatively, three or four position conversion drawing bolts and three or four position conversion press bolts may be provided.

[0047] In the above-described embodiment, the position of the fixed dies in the opposing direction can be changed by rotating the position changing drawing bolt and the position changing pressing bolt, but this is not limited to this, and it is also possible to change the position of the fixed dies in the opposing direction using a single position changing bolt. The number and positions of such position changing bolts can be determined as appropriate.

[0048] In the above-described embodiment, a rolling position changing bolt is provided to adjust the position of the fixed die in the rolling direction, but this is not limiting, and the fixed die may be configured to be immovable in the rolling direction. In this configuration, no rolling position changing bolt or rolling position detection sensor is provided.

[0049] In the above-described embodiment, the first to third initial position information pre-stored in the storage device of the control PC is information determined based on the nominal diameter, but this is not limiting, and the first to third initial position information may be information set based on other standards that define the screw (for example, pitch, thread dimension, root diameter dimension, etc.) In this way, the first to third initial position information is basic information pre-stored in the rolling device, and therefore can be set appropriately according to the product standard. In the embodiment, the first to third initial position information is stored in advance, but the present invention is not limited to this, and the first to third initial position information may not be stored. In this configuration, the first to third set position information set by a specific operator (such as a skilled operator) is stored, and the position of the fixed die can be adjusted according to this.

[0050] In the above-described embodiment, the first to third set position information or the first to third initial position information and the first to third current position information are displayed numerically on the touch panel, but this is not limiting, and the information may be displayed as a pattern (for example, a bar graph or a pie chart).Furthermore, the information may be notified by illumination of a lamp or the like or by sound from a speaker or the like.

[0051] The above-described embodiment illustrates a rolling device that rolls male threads, but it can also be applied to devices that roll products other than male threads. For example, it can be applied to a rolling device that performs knurling or form rolling (grooving, etc.), and as with the above-described embodiment, it can store initial position information and set position information as the processing start position of the die, thereby improving work efficiency and stabilizing quality. [Explanation of symbols]

[0052] 1. Rolling equipment 3 Fixed Dice 4 Movement Dice 10 Blank material 11,21 Rolled surface 31 Position conversion drawing bolt 32 Position change pressing bolt 33 Opposite position detection sensor 36 Control PC 37 Touch Panel

Claims

[Claim 1] a fixed die having a rolling surface portion along the rolling direction and fixed so as not to move in the rolling direction during rolling; a movable die having a rolling surface portion facing the rolling surface portion of the fixed die and being provided so as to be reciprocally movable in the rolling direction; a rolling device for rolling a blank material sandwiched between a rolling surface portion of the movable die and a rolling surface portion of the fixed die by the reciprocating movement of the movable die, At least one of the fixed die and the movable die is provided so as to be positionally changeable along a direction in which the rolling surface portions thereof face each other, an opposing position changing means for manually changing the relative positions of the fixed die and the movable die in the opposing direction; an opposing position detection sensor that detects the relative positions of the fixed die and the movable die in the opposing direction; a position output unit that outputs the relative position in the facing direction detected by the facing position detection sensor; an information storage means for storing pre-processing position information in the opposing direction used for relative positioning of the fixed die and the movable die before rolling; Equipped with The position output means A rolling device characterized in that it is equipped with an opposing position information notification means that sequentially notifies detected opposing position information based on the relative position in the opposing direction detected by the opposing position detection sensor in accordance with position conversion by the opposing position conversion means, and that notifies pre-processing position information of the information storage means.

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