Thread rolling machine

Abstract

To provide a thread rolling machine which achieves good maintenance workability.SOLUTION: A thread rolling machine includes: two roll dices 112, 115 which perform rolling to a columnar workpiece 1; compression drive parts 113, 114, 116, 117 which compress and drive the two roll dices 112, 115 to perform rolling; and a carry-in part 12 which carries the workpiece 1 into a space between the two roll dices 112, 115 in an axial direction of the workpiece 1. The carry-in part 12 is configured to be slidable in a direction intersecting with a carrying-in direction of the workpiece 1.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a rolling machine. [Background technology]

[0002] Patent Document 1 describes a rolling machine that uses roll dies to perform rolling on a cylindrical workpiece. This rolling machine is equipped with a carry-in device that carries the workpiece to the processing point. The carry-in device transports the workpiece in its axial direction. Therefore, the carry-in device is arranged next to the roll dies in the axial direction of the workpiece. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 61-9901 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned rolling machine, the loading device is arranged next to the roll die in the direction of the central axis of the workpiece, so when attempting to perform maintenance on the device that pressurizes and rotates the roll die or the roll die itself, the loading device becomes an obstacle, making maintenance work difficult.

[0005] The present invention has been made in consideration of the above problems, and aims to provide a rolling machine with good maintenance workability. [Means for solving the problem]

[0006] One aspect of the present invention is Two roll dies are used to perform rolling on cylindrical workpieces, A pressure drive unit that applies pressure and drives the two roll dies to perform the rolling process; a loading section that loads the workpiece between the two roll dies in the axial direction of the workpiece, The loading section is on a rolling machine configured to be slidable in a direction intersecting the direction in which the workpiece is loaded. Effect of the Invention

[0007] In one embodiment of the rolling machine, the loading section is configured to be slidable in a direction intersecting the direction in which the workpiece is loaded, so that by sliding the loading section during maintenance, space can be created that can be used for maintenance.

[0008] With this configuration, the rolling machine of the above aspect improves the ease of maintenance work. [Brief description of the drawings]

[0009] [Figure 1] FIG. 2 is a perspective view showing a rolling machine according to the embodiment. [Diagram 2] FIG. 13 is a perspective view showing the rolling machine with the front door and the loading side cover open according to the embodiment. [Diagram 3] FIG. 2 is a front view showing the rolling machine according to the embodiment. [Figure 4] IV-IV cross-sectional view of FIG. 3. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] (Embodiment) 1. Configuration of the rolling machine 10 The configuration of the rolling machine 10 of this embodiment will be described with reference to Figs. 1 to 4. Fig. 1 is a perspective view of the entire rolling machine 10 including the overall cover 14. Fig. 2 is a perspective view of the rolling machine 10 with the front door 141b and the side movable cover portion 142b of the overall cover 14 open. Fig. 3 is a schematic front view of the rolling machine 10 excluding the overall cover 14 and the like. Fig. 4 is a schematic view showing a cross section taken along the line IV-IV in Fig. 3. In Figs. 1 to 4, the up and down arrows indicate the up and down directions in the direction of gravity. In Figs. 1 to 4, the front, back, left and right arrows indicate the front, back, left and right directions of the rolling machine 10.

[0011] The rolling machine 10 is a rolling device that performs rolling processing on the outer peripheral surface of the workpiece 1. The rolling machine 10 in this embodiment is a round die rolling machine that plastically deforms and rolls the outer peripheral surface of the workpiece 1 by rotating the two roll dies 112, 115 while applying pressure to the workpiece 1 so as to sandwich the workpiece 1 between them.

[0012] The rolling machine 10 of this embodiment rolls a screw thread on the outer peripheral surface of a cylindrical workpiece 1. Specifically, the rolling machine 10 is a ball screw forming rolling machine that forms a ball screw by rolling a screw thread on the outer peripheral surface of the cylindrical workpiece 1. The rolling machine 10 of this embodiment can also process gears.

[0013] 2. Detailed configuration of the rolling machine 10 As shown in Fig. 1 and Fig. 2, the rolling machine 10 includes a main body 11, a carry-in device 12, an unloading device 13, and an overall cover 14. The main body 11 is a rolling processing section that performs rolling on the workpiece 1 shown in Fig. 3. The carry-in device 12 is a carry-in section that carries the workpiece 1 before rolling into the main body 11. The unloading device 13 is a carry-out section that unloads the workpiece 1 that has been rolled in the main body 11 from the main body 11. The overall cover 14 covers the front, rear, and sides of the main body 11 and the unloading device 13 for the purposes of ensuring work safety and improving the work environment.

[0014] 3 and 4, the main body 11 has a base 111, a first roll die 112, a first pressurizing device 113, a first rotation drive device 114, a second roll die 115, a second pressurizing device 116, a second rotation drive device 117, a bush 118, and a coolant pan 119. The first pressurizing device 113, the first rotation drive device 114, the second pressurizing device 116, and the second rotation drive device 117 are a pressurizing drive unit that pressurizes and rotates the first roll die 112 and the second roll die 115.

[0015] The base 111 is installed on a horizontal floor surface FL (in other words, a horizontal plane). As shown in Fig. 4, the base 111 has a flat surface 111a that is angled at a predetermined angle θB (75 degrees in this example) with the floor surface FL.

[0016] A first pressure applying device 113, a first rotation driving device 114, a second pressure applying device 116, and a second rotation driving device 117 are fixed to a flat surface 111a of the base 111. Therefore, the first pressure applying device 113, the first rotation driving device 114, the second pressure applying device 116, and the second rotation driving device 117 are also arranged at a predetermined angle θB (75 degrees in this example) with respect to the floor surface FL.

[0017] The first pressurizing device 113 is a pressurizing unit that pushes the first roll die 112 toward the workpiece 1 along the flat surface portion 111a to apply pressure or returns it to the position before extrusion, as shown by an arrow P1 in Figures 3 and 4. The second pressurizing device 116 is a pressurizing unit that pushes the second roll die 115 toward the workpiece 1 along the flat surface portion 111a to apply pressure or returns it to the position before extrusion, as shown by an arrow P2 in Figures 3 and 4.

[0018] The first rotation drive device 114 rotates the first rolling die 112 as shown by an arrow R1 in Fig. 4. The second rotation drive device 117 rotates the second rolling die 115 in the same direction as the first rolling die 112 as shown by an arrow R2 in Fig. 4.

[0019] The first pressurizing device 113, the first rotary drive device 114, the second pressurizing device 116 and the second rotary drive device 117 rotate the first roll die 112 and the second roll die 115 while applying pressure to sandwich the workpiece 1, thereby rolling the workpiece 1.

[0020] The first rolling die 112 and the second rolling die 115 have a disk shape. The outer circumferential surfaces of the first rolling die 112 and the second rolling die 115 form rolling surfaces for rolling a screw thread into the workpiece 1.

[0021] 3 and 4, the first roll die 112 and the second roll die 115 are arranged vertically along the flat surface portion 111a of the base 111, with their respective central axes C1 and C2 facing substantially horizontally. The first roll die 112 is arranged above the second roll die 115 in the direction of gravity. In other words, the first roll die 112 and the second roll die 115 are positioned to sandwich the workpiece 1 at least in the direction of gravity.

[0022] As shown in FIG. 3, the first pressurizing device 113 has a first pressurizing motor 113a, a first drive belt 113b, and a first ball screw unit 113c. The first ball screw unit 113c incorporates a ball screw, a ball, and a bearing. The rotational driving force generated by the first pressurizing motor 113a is transmitted to the ball screw of the first ball screw unit 113c via the first drive belt 113b. When the rotational driving force generated by the first pressurizing motor 113a is transmitted to the ball screw of the first ball screw unit 113c, the first roll die 112 is displaced linearly along the flat portion 111a of the base 111 so as to approach or move away from the workpiece 1.

[0023] The second pressurizing device 116 has a second pressurizing motor 116a, a second drive belt 116b, and a second ball screw unit 116c, similar to the first pressurizing device 113. The second ball screw unit 116c incorporates a ball screw, balls, and bearings.

[0024] The rotational driving force generated by the second pressurizing motor 116a is transmitted to the ball screw of the second ball screw unit 116c via the second drive belt 116b. When the rotational driving force generated by the second pressurizing motor 116a is transmitted to the ball screw of the second ball screw unit 116c, the second roll die 115 is displaced linearly along the flat surface portion 111a of the base 111 so as to approach or move away from the workpiece 1. This allows the first roll die 112 and the second roll die 115 to apply pressure so as to sandwich the workpiece 1.

[0025] The first rotation drive device 114 has a first rotation drive motor 114a, a first drive gear 114b, a first input side constant velocity joint 114c, a first shaft 114d, and a first output side constant velocity joint 114e.

[0026] The rotational drive force generated by the first rotational drive motor 114a is transmitted to the first roll die 112 via the first drive gear 114b, the first input side constant velocity joint 114c, the first shaft 114d, and the first output side constant velocity joint 114e.

[0027] As described above, the first roll die 112 is linearly displaced by the first pressure device 113 so as to approach or move away from the workpiece 1, but because the first input side constant velocity joint 114c, the first shaft 114d, and the first output side constant velocity joint 114e are provided, the rotational driving force generated by the first rotational drive motor 114a is transmitted to the first roll die 112 without hindrance.

[0028] Similar to the first rotation drive device 114, the second rotation drive device 117 has a second rotation drive motor 117a, a second drive gear 117b, a second input side constant velocity joint 117c, a second shaft 117d, and a second output side constant velocity joint 117e.

[0029] The rotational drive force generated by the second rotational drive motor 117a is transmitted to the second roll die 115 via the second drive gear 117b, the second input side constant velocity joint 117c, the second shaft 117d, and the second output side constant velocity joint 117e.

[0030] As described above, the second pressurizing device 116 linearly displaces the second roll die 115 so as to approach or move away from the workpiece 1, but because the second input side constant velocity joint 117c, the second shaft 117d, and the second output side constant velocity joint 117e are provided, the rotational driving force generated by the second rotational drive motor 117a is transmitted to the second roll die 115 without hindrance.

[0031] The bush 118 is a cylindrical support member into which the workpiece 1 carried into the main body 11 is inserted. A bearing for rotatably supporting the workpiece 1 is provided on the inner peripheral surface of the bush 118. The bush 118 is disposed closer to the carry-in device 12 side (right side in FIG. 3) than the first roll die 112 and the second roll die 115 in the axial direction of the workpiece 1 (left-right direction in FIG. 3).

[0032] A work rest (not shown) is fixed to the flat surface portion 111a of the base 111. The work rest is disposed at a position where it abuts against the workpiece 1 carried into the main body portion 11 from the flat surface portion 111a side. The work rest is disposed closer to the discharge device 13 side (left side in FIG. 3) than the bush 118 in the axial direction of the workpiece 1 (left-right direction in FIG. 3).

[0033] The coolant pan 119 is a plate-like member that receives the coolant sprayed toward the workpiece 1 from a coolant nozzle (not shown) from below in the direction of gravity. The coolant pan 119 is disposed below the second roll die 115 in the direction of gravity. The coolant pan 119 has a bent plate shape so as to prevent the coolant sprayed toward the workpiece 1 from scattering toward the front side of the main body 11 (the left side in FIG. 4).

[0034] As shown in Fig. 3, the carry-in device 12 has a carry-in table 121, a carry-in hand 122, a carry-in hand slide device 123, and a retraction caster 124. The carry-in table 121 is a table on which the workpiece 1 is placed. The carry-in hand 122 is a carry-in side gripping part that grips the workpiece 1 when carrying the workpiece 1 placed on the carry-in table 121 into the main body 11. The carry-in hand slide device 123 is a device that slides the carry-in hand 122 back and forth between the carry-in device 12 and the main body 11. The retraction caster 124 has wheels that enable the carry-in device 12 to slide backward (toward the back of the paper in Fig. 3).

[0035] The carry-in hand 122 grips a portion of the workpiece 1 that is on the carry-in front side (to the right side in FIG. 3) of the portion to be rolled. When the carry-in hand slide device 123 slides the carry-in hand 122 closest to the main body 11, the carry-in hand 122 is located on the carry-in front side (to the right side in FIG. 3) of the bush 118. When the carry-in hand slide device 123 slides the carry-in hand 122 towards the main body 11 with the carry-in hand 122 gripping the workpiece 1, the workpiece 1 is inserted into the bush 118.

[0036] 1, the carry-in table 121, the carry-in hand 122, and the carry-in hand slide device 123 of the carry-in device 12 are covered by a carry-in device cover 125. The carry-in device cover 125 is provided with an opening and closing input door 125a. When the workpiece 1 is input into the carry-in table 121, the input door 125a is manually opened by an operator.

[0037] 3, the unloading device 13 has a unloading hand 131, an unloading chute 132, and an unloading hand slide mechanism 133. The unloading hand 131 is an unloading side gripping part that grips the workpiece 1 that has been rolled in the main body 11 when unloading the workpiece 1 to the unloading chute 132.

[0038] The carry-out chute 132 is an inclined plate-like member that allows the workpiece 1 carried out by the carry-out hand 131 to roll by gravity to a place where the worker can take it out, and is disposed below the carry-out hand 131 in the direction of gravity. The carry-out hand slide mechanism 133 is a slide part that slides the carry-out hand 131 back and forth between the main body 11 and the carry-out device 13. The carry-out hand slide mechanism 133 is disposed above the workpiece 1 in the direction of gravity.

[0039] With the carry-out hand 131 gripping the workpiece 1, the carry-out hand slide mechanism 133 slides the carry-out hand 131 to the carry-out side (the left side in FIG. 3) and when the carry-out hand 131 reaches above the carry-out chute 132, the carry-out hand 131 releases the workpiece 1. As a result, the workpiece 1 falls by its own weight onto the carry-out chute 132, and then rolls down along the inclination of the carry-out chute 132 to the bottom end of the carry-out chute 132.

[0040] As shown in FIGS. 1 and 2, the entire cover 14 has a front cover 141, a carry-in side cover 142, an unloading side cover 143, and a rear cover 144.

[0041] The front cover 141 is located on the front side of the main body 11 and the discharge device 13, and has a front fixed cover part 141a and a front door 141b. The front fixed cover part 141a is located on the front side of the discharge device 13. An outlet 141c is opened in the front fixed cover part 141a. The outlet 141c is provided for removing the workpiece 1 on the discharge chute 132.

[0042] The front door 141b is a sliding door that can be opened and closed, is closed during rolling processing, and is opened during maintenance, etc. The front door 141b is provided with a window that allows an operator to visually check the rolling processing status. When the front door 141b is closed, it is located on the front side of the main body 11, and when it is open, it overlaps with the front fixed cover part 141a. When the front door 141b is opened, an operator can access the first roll die 112 and the second roll die 115 of the main body 11 and their surrounding areas.

[0043] The carry-in side cover 142 is a side cover located on the side of the main body 11 facing the carry-in device 12, and has a side fixed cover part 142a and a side movable cover part 142b. The side fixed cover part 142a is disposed rearward of the carry-in device 12.

[0044] The side movable cover part 142b is located between the main body part 11 and the carry-in device 12. The side movable cover part 142b and the carry-in device 12 are connected to a retracting slide mechanism (not shown). The retracting slide mechanism is a mechanism that enables the side movable cover part 142b and the carry-in device 12 to slide horizontally to the rear side (in other words, in a direction perpendicular to the carry-in direction of the workpiece 1). The sliding movement of the side movable cover part 142b and the carry-in device 12 is performed manually by an operator.

[0045] When the side movable cover part 142b and the carry-in device 12 are returned to the position during processing, they are positioned by a positioning pin (not shown). This makes it possible to reliably and easily ensure the accuracy of the carry-in position of the workpiece 1 by the carry-in device 12 during processing.

[0046] The unloading side cover 143 is a side cover located on the side of the main body 11 facing the unloading device 13. The rear cover 144 is located on the rear side of the main body 11.

[0047] 2 shows the rolling machine 10 in a state where the front door 141b is open and the side movable cover part 142b and the carry-in device 12 are retreated to the rear side. In the following, the state where the front door 141b is open and the side movable cover part 142b and the carry-in device 12 are retreated to the rear side is referred to as a "state where the front door 141b and the side movable cover part 142b are open," and the state where the front door 141b is closed and the side movable cover part 142b and the carry-in device 12 are returned to their positions during processing is referred to as a "state where the front door 141b and the side movable cover part 142b are closed."

[0048] When the front door 141b and the side movable cover part 142b are closed, the corner CN (encircled by a thick dashed line in FIG. 2) between the front door 141b and the side movable cover part 142b has a frameless structure without a pillar. This allows a large maintenance space to be formed when the front door 141b and the side movable cover part 142b are open.

[0049] Although not shown in the figure, the front door 141b and the movable side cover part 142b are shaped to interlock with each other when both are closed. The rolling machine 10 is equipped with an electromagnetic lock (not shown). The electromagnetic lock locks the front door 141b and the movable side cover part 142b in the closed state. When the electromagnetic lock detects that the front door 141b and the movable side cover part 142b are locked in the closed state, the rolling operation by the rolling machine 10 can be started.

[0050] The rolling machine 10 is provided with an operation panel (not shown) and a control device (not shown). The operation panel is provided with a start switch for the rolling machine 10, an emergency stop switch, various setting switches, various displays, etc.

[0051] The control device is a device that controls the operation of the rolling machine 10, and is composed of a microcomputer including a CPU, ROM, RAM, etc., and its peripheral circuits. The control device performs various calculations and processing based on a control program stored in the ROM, and controls the operation of the controlled devices such as the first pressurizing motor 113a, the second pressurizing motor 116a, the first rotation drive motor 114a, the second rotation drive motor 117a, the carry-in hand slide device 123, and the carry-out hand slide mechanism 133.

[0052] 3. Operation process by the rolling disk 10 The operation steps of the rolling machine 10 are roughly divided into a carry-in step, a rolling step, and an unloading step. (Carry-in process) In the loading step, an operator places the workpiece 1 on the loading table 121 of the loading device 12 and presses a start switch on the operation panel. When the start switch on the operation panel is pressed, a control program of the control device is executed.

[0053] When the control program of the control device is executed, the carry-in hand 122 of the carry-in device 12 grips the workpiece 1, and the carry-in hand slide device 123 slides the carry-in hand 122 toward the main body 11 (the left side in FIG. 3). As a result, the workpiece 1 is carried into the main body 11 and inserted into the bush 118, and the process proceeds to the next rolling process.

[0054] When the workpiece 1 is loaded into the main body 11, the loading hand releases the workpiece 1 in preparation for the next loading step, and the loading hand slide device 123 slides the loading hand 122 back toward the loading device 12 side.

[0055] (Rolling process) In the rolling process, the first rolling die 112 is pushed out from its original position toward the workpiece 1 by the first pressure device 113, and the second rolling die 115 is pushed out from its original position toward the workpiece 1 by the second pressure device 116. Furthermore, the first rolling die 112 is rotationally driven by the first rotation drive device 114, and the second rolling die 115 is rotationally driven in the same direction as the first rolling die 112 by the second rotation drive device 117.

[0056] As a result, the first roll die 112 and the second roll die 115 rotate while applying pressure to sandwich the workpiece 1, thereby rolling the workpiece 1. During the rolling process, coolant is sprayed toward the workpiece 1 from a coolant nozzle (not shown).

[0057] When the rolling process of the workpiece 1 is completed, the rotational drive of the first roll die 112 and the second roll die 115 by the first rotation drive device 114 and the second rotation drive device 117 is stopped, and the first roll die 112 and the second roll die 115 are moved away from the workpiece 1 by the first pressure device 113 and the second pressure device 116 and returned to their original positions, and the process proceeds to the unloading process.

[0058] (Export process) In the carrying-out process, the carrying-out hand slide mechanism 133 slides the carrying-out hand 131 to the closest position to the main body 11 (the right side in FIG. 3), and then the carrying-out hand 131 grips the workpiece 1. When the carrying-out hand 131 grips the workpiece 1, the carrying-out hand slide mechanism 133 slides the carrying-out hand 131 to the closest position to the carrying-out side (the left side in FIG. 3), and then the carrying-out hand 131 releases the workpiece 1.

[0059] As a result, the workpiece 1 falls under its own weight onto the discharge chute 132, and then rolls down along the incline of the discharge chute 132 to the bottom end of the discharge chute 132. The workpiece 1 that has rolled down to the bottom end of the discharge chute 132 is removed by an operator.

[0060] 4. Effects of the rolling machine 10 4, the flat surface 111a of the base 111 has a predetermined angle θB (75 degrees in this example) with respect to the floor surface FL, so that the worker can easily grasp the processing status of the workpiece 1. Specifically, when the worker opens the front door 141b, the processing point is in front, and the horizontal distance from the worker to the processing point is shorter than when the flat surface 111a of the base 111 is parallel to the floor surface FL. Therefore, the workpiece 1 being rolled can be easily seen, so that the processing status of the workpiece 1 can be easily grasped.

[0061] In addition, since the horizontal distance from the worker to the processing point is shortened, it becomes easier for the worker to perform maintenance on equipment around the processing point (first roll die, second roll die 115, first pressure device 113, first rotation drive device 114, second pressure device 116, second rotation drive device 117, etc.).

[0062] Furthermore, by sliding the side movable cover part 142b and the carry-in device 12 to the rear side and retracting them, the worker can access the periphery of the processing point from the side on which the carry-in device 12 is located, making maintenance even easier.

[0063] Furthermore, since the corner CN between the front door 141b and the side movable cover part 142b has a frameless structure, a large maintenance space is formed when the front door 141b and the side movable cover part 142b are open, making maintenance even easier.

[0064] The flat surface 111a of the base 111 has a predetermined angle θB (75 degrees in this example) with respect to the floor surface FL, and the first pressure device 113, the first rotation drive device 114, the second pressure device 116, and the second rotation drive device 117 are arranged at an incline along the flat surface 111a of the base 111, so that the size of the rolling plate 10 in the front-to-back direction (in other words, the depth direction) can be made smaller than if these were fixed horizontally.

[0065] The flat surface 111a of the base 111 has a predetermined angle θB (75 degrees in this example) with respect to the floor surface FL, which effectively creates a space for arranging the discharge device 13. Specifically, as shown in Fig. 4, the discharge device 13 is arranged by effectively utilizing the space that is available above the workpiece 1 in the direction of gravity. This makes it possible to prevent the discharge device 13 from increasing in size of the rolling machine 10.

[0066] A portion of the first rotary drive device 114 and the discharge device 13 are positioned on the discharge side of the workpiece 1 (left side in Figure 3) relative to the first roll die 112, and the discharge device 13 and at least a portion of the first rotary drive device 114 are positioned at the same position in the axial direction of the workpiece 1.

[0067] As a result, the transport distance of the workpiece 1 is shorter compared to when the transport device 13 is positioned on the transport side of the workpiece 1 (the left side in Figure 3) relative to the first rotation drive device 114, so that the transport time is shortened, improving productivity and reducing the size of the rolling machine 10 in the axial direction of the workpiece 1.

[0068] The discharge hand slide mechanism 133 of the discharge device 13 is disposed above the workpiece 1 in the direction of gravity. This allows the discharge device 13 to be disposed by effectively utilizing the space that is generated above the workpiece 1 in the direction of gravity as a result of the flat surface 111a of the base 111 being inclined with respect to the floor surface FL, and therefore the physical size of the rolling machine 10 can be reduced.

[0069] When the workpiece 1 is loaded between the first roll die 112 and the second roll die 115 during the loading process, the bush 118 rotatably supports the workpiece 1, so that even if the flat portion 111a of the base 111 is inclined with respect to the floor surface FL, the workpiece 1 can be prevented from shifting downward in the direction of gravity during the rolling process.

[0070] A work rest (not shown) abuts against the workpiece 1 brought between the first roll die 112 and the second roll die 115 from the flat surface 111a side of the base 111, so that even if the flat surface 111a of the base 111 is angled with respect to the floor surface FL, displacement of the workpiece 1 can be effectively suppressed.

[0071] The coolant pan 119 is disposed below the second roll die 115 in the direction of gravity, and receives the coolant sprayed toward the workpiece 1 at the lower side in the direction of gravity. This allows the sprayed coolant to be received at the lower side in the direction of gravity even if the flat surface 111a of the base 111 is angled with respect to the floor surface FL.

[0072] The carry-in device 12 is configured to be slidable in a direction perpendicular to the carry-in direction of the workpiece 1 (specifically, toward the rear side), so that the carry-in device 12 can be slidable during maintenance to create space available for maintenance, making maintenance easier. It also makes it easier to change stages (such as replacing dies). The carry-in device 12 slides only in a direction perpendicular to the carry-in direction of the workpiece 1 on the rolling disk 10 and does not involve movement of the rolling disk 10 in the left-right direction, so the space required for the movement of the carry-in device 12 is not required in the left-right direction of the rolling disk 10, resulting in space saving.

[0073] Since the carry-in device 12 is configured to be slidable together with the side movable cover part 142b, the space available for maintenance is increased. Also, since the carry-in device 12 slides together with the side movable cover part 142b, the periphery of the processing point can be accessed simply by sliding the carry-in device 12, improving workability.

[0074] The side movable cover part 142b is configured to abut against the front cover 141 when slid most toward the front cover 141, so that the side movable cover part 142b can be closed even if there is no pillar at the corner CN between the side movable cover part 142b and the front cover 141.

[0075] The front cover 141 has a front door 141b that opens and closes so as to move closer to and away from the side movable cover portion 142b. Therefore, by opening the front door 141b during maintenance, the space available for maintenance can be further increased.

[0076] Since the front door 141b is configured to abut against the movable side cover part 142b in the closed state, the front door 141b can be closed even if there is no pillar at the corner CN between the front door 141b and the movable side cover part 142b.

[0077] Since the corner CN between the front door 141b and the side movable cover part 142b has a pillarless structure, when the side movable cover part 142b and the front door 141b move away from each other, a space for maintenance is formed at the place where the side movable cover part 142b and the front door 141b were in contact with each other, which makes maintenance easy.

[0078] The present invention is not limited to the above-described embodiment, and different embodiments can be configured without departing from the spirit of the present invention. The present invention also includes various modifications, modifications within the scope of the equivalents, and the like.

[0079] For example, in the above embodiment, the flat surface 111a of the base 111 has a predetermined angle θB (75 degrees in this example) with respect to the floor surface FL, but the predetermined angle θB may be an angle other than 75 degrees, such as 60 degrees or 90 degrees. The predetermined angle θB is preferably 45 degrees or more, and more preferably 60 degrees or more. The predetermined angle θB is preferably less than 90 degrees, and more preferably 80 degrees or less. This reduces the distance between the worker and the periphery of the processing point, making it unnecessary to add an auxiliary loading device (mechanism) to the loading device 12, and the workpiece 1 can be loaded efficiently. Even when the workpiece 1 is loaded by an automatic loading device, it can be loaded efficiently with a short loading distance.

[0080] In the above embodiment, the side movable cover part 142b and the loading device 12 are configured to be slidably moved in a direction perpendicular to the loading direction of the workpiece 1, but this is not limited to a direction perpendicular to the loading direction of the workpiece 1, as long as they are slidably moved in a direction intersecting the loading direction of the workpiece 1. [Explanation of symbols]

[0081] 1 Workpiece 12 Loading device (loading section) 112 First Roll Dice (Roll Dice) 113 First pressure device (pressure drive unit) 114 First rotation drive device (pressure drive unit) 115 2nd Roll Dice (Roll Dice) 116 Second pressure device (pressure drive unit) 117 Second rotation drive unit (pressure drive unit) 141 Front cover 142 Loading side cover

Claims

1. Two roll dies that perform rolling on cylindrical workpieces, A pressure drive unit that applies pressure and drives the two roll dies to perform the rolling process; a loading section that loads the workpiece between the two roll dies in the axial direction of the workpiece, The loading section is configured to be slidable in a direction intersecting a loading direction of the workpiece.

2. a plate-shaped carry-in cover that is provided between the two roll dies and the pressure drive unit and the carry-in unit and covers the two roll dies and the pressure drive unit from the carry-in unit side; The rolling machine according to claim 1 , wherein the entrance portion is configured to be slidable together with the entrance cover.

3. a plate-shaped front cover that is disposed perpendicular to the carry-in side cover and covers the two roll dies and the pressure drive unit; 3. The rolling machine according to claim 2, wherein the entrance cover is configured to abut against the front cover when slid most toward the front cover.

4. the front cover has a front door that opens and closes to and away from the carry-in side cover, The rolling machine according to claim 3 , wherein the front door is configured to abut against the entrance cover when in a closed state.

5. The rolling machine of claim 4, wherein when the loading side cover and the front door are moved away from each other, a space for maintenance of the two roll dies and the pressure drive unit is formed at the corner where the loading side cover and the front door abut.

6. A base having a flat surface to which the pressure drive unit is fixed, 6. The rolling machine according to claim 1, wherein the flat surface is inclined with respect to a horizontal plane so that the two roll dies sandwich the workpiece at least in the direction of gravity.

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