JP2010094692A - Form rolling method and apparatus thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a form rolling method and an apparatus thereof, capable of changing a speed in form rolling and a speed of reciprocation while preventing the speed of movement of a flat die from being regulated by an initial speed thereof at the start of form rolling. <P>SOLUTION: The form rolling apparatus has a first flat die 10 and a second flat die 16 positioned along the first flat die 10. In the form rolling method, a raw material S to be processed supplied to the end of the first flat die 10 is sandwiched between the first flat die 10 and the second flat die 16, and the second flat die 16 is moved along the first flat die 10 to process the outer peripheral surface while rotating the raw material S to be processed. A forwarding thread rod 17 rotating by driving of a motor 18 is screwed with a screw hole 16a formed on the second flat die 16, thereby controlling the state that the second flat die 16 moves in parallel to the first flat die 10 by the driving of the motor 18. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention provides a rolling process method in which a workpiece is sandwiched between a pair of parallel flat dies, the workpiece is rolled and rotated when the flat die slides in parallel, and the outer peripheral surface of the workpiece is processed. It relates to the improvement of the apparatus.

  In general, a rolling processing apparatus using a flat die includes a fixed flat die and a moving flat die that moves in parallel with the fixed flat die, and the workpiece material supplied from the pallet is sandwiched between the flat dies and moved. The flat die is moved forward along the fixed flat die, and the outer peripheral surface of the workpiece is threaded while rolling and rotating the workpiece material.

  The types of processing using this type of rolling processing equipment include not only screw processing and knurling processing, but also crushing processing that improves the surface roughness of the processed material, and the tip of the processed material such as foam rolls. It is often used for processing the R and C surfaces with deep grooves.

For example, in the rolling method described in JP-A-8-215783, a workpiece material is sandwiched between a pair of parallel flat dies, and the workpiece material is rolled and rotated while the flat dies are displaced in parallel. In the rolling processing method in which the outer peripheral surface is processed, the distance that the pair of flat dies are displaced in parallel is increased, and the rolling rotational speed of the processed material is increased.
JP-A-8-215783

  In the rolling processing apparatus, the work material is introduced between a pair of flat dies, and the work material is held between both flat dies. Work material is securely held between both flat dies. However, in this type of rolling processing apparatus, the reciprocating speed is the same speed because the crankshaft converts the motion of one rotation of the motor into one reciprocating linear motion. Since the processing speed at the initial stage of rolling is low, the speed at the time of rolling is the same, so the overall processing speed is slow and the efficiency is low, so improvement has been desired.

  In the present invention, a workpiece material is inserted between a pair of flat dies, the workpiece material is held between the two flat dies, and when the flat die is shifted in parallel, the workpiece material is rolled and rotated, and the outer peripheral surface of the workpiece material is processed. Rolling process method and apparatus thereof, in which the speed at which the flat die moves is not restricted by the initial speed at the start of rolling, and the rolling process method and apparatus capable of changing the speed during the rolling process and the reciprocating speed Is to provide.

  In order to solve the above-mentioned problem, the invention according to claim 1 has a first flat die and a second flat die positioned along the first flat die, and supplies the first flat die to an end portion of the first flat die. The processed material to be processed is sandwiched between the first flat die and the second flat die, and the second flat die is moved along the first flat die, thereby processing the outer peripheral surface while rotating the processed material. A rolling processing method to be applied, wherein a screw screw that rotates by driving a motor is screwed into a screw hole formed in the second flat die, so that the second flat die is driven by the motor. It is a rolling method characterized in that the state of movement parallel to the flat die is controlled.

  According to a second aspect of the present invention, there is provided a processing material having a first flat die and a second flat die positioned along the first flat die, and being supplied to an end portion of the first flat die. A rolling processing apparatus that processes the outer peripheral surface while rotating the workpiece material by sandwiching the first flat die and the second flat die and moving the second flat die along the first flat die. The second flat die is provided with a screw hole that passes therethrough, a motor is connected to a feed screw rod that is screwed into the screw hole, and the feed screw rod is rotated by the driving of the motor, so that the second flat die is rotated. The rolling processing apparatus is characterized in that a die is moved and a state in which the second flat die moves in parallel with the first flat die is controlled by driving the motor.

  According to the rolling processing method and apparatus of the present invention, the flat die moves forward or backward depending on the rotation direction of the motor, and the flat die forward speed or reverse speed is set depending on the motor rotational speed. However, the initial speed at the start of rolling is not restricted and the speed at the time of rolling and the reciprocating speed can be changed, which is practical.

  Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments.

  1 to 6 show a first embodiment of the present invention, FIG. 1 is a schematic view of a rolling processing apparatus immediately before a processed material is supplied, and FIG. 2 is a state immediately before sandwiching the supplied processed material between flat dies. Fig. 3 is a schematic view of a rolling processing apparatus in which the supplied processing material is sandwiched between flat dies, and Fig. 4 is an outer periphery of the processing material by applying rolling rotation to the processing material. FIG. 5 is a schematic view of a rolling processing apparatus in a state where a surface is being processed, FIG. 5 is a schematic view of a rolling processing apparatus in a state where a processed material after processing is discharged, and FIG. FIG. 7 is a block diagram of the motor control unit, and FIG. 8 is a waveform diagram of the speed of the moving flat die.

  1 to 8, in the rolling processing apparatus 1, the first flat die 10 includes a rectangular parallelepiped upper flat die 11, a wedge member 12 whose upper surface is horizontal and whose lower surface is inclined, and a lower surface of the wedge member 12. The wedge member 12 is disposed on the base 12a that is fixed to the bottom portion, and the upper flat die 11 is placed on the wedge member 12. Has been.

  Although not shown, the wedge member 12 is provided with a nut hole in the front-rear direction, and is engaged with a ball screw 13a that serves as a rotation shaft of the motor 13. The motor 13 rotates, whereby the base 12a and the first flat die 10 are rotated. And the interrupt position is varied, and the height of the first flat die 10 is adjusted.

  On the front side of the first flat die 10, a supply path 14 for the processed material S is disposed, and the processed material S is sequentially fed. Further, on the rear surface 10b of the first flat die 10 positioned in front of the first flat die 10, a conveying device 15 is provided in which the protruding plate 15a moves up and down along the rear surface 10b of the first flat die 10. In the transport device 15, the protruding plate 15 a is formed on a tapered surface 15 b that has an acute tip and an upper end that is inclined upward from the side that contacts or approaches the rear surface 10 b of the first flat die 10.

  The second flat die 16 is provided with screw holes 16a penetrating in the front-rear direction. Since the feed screw rod 17 is screwed into the screw hole 16a while being coaxially fixed to the rotation shaft of the motor 18, the lead screw rod 17 is rotated by driving of the motor 18, and the lead of the feed screw rod 17 (the feed screw rod 17 is connected). The second flat die 16 is moved forward or backward in parallel with the first flat die 10 according to the distance moved in the axial direction when it is rotated once.

  The control unit 20 includes a microcomputer 21 and a control circuit 22, and controls the rotation direction and rotation speed of the motors 13 and 18 and the operation of the ejection plate 15 a of the transport device 15 according to the output from the microcomputer 21. Control is performed.

  A memory (not shown) in the microcomputer 21 stores a predetermined program for setting the operation procedure of the motors 13 and 18 and the operation procedure of the ejecting plate 15a of the transfer device 15. The motor 13, the motor 18, and the transfer The protruding plate 15a in the device 15 operates in a desired procedure.

  Next, an example of the operation will be described. In the rolling processing apparatus 1, the protruding plate 15a of the conveying device 15 at the initial stage of starting the rolling process is disposed at a lower position as shown in FIG. Then, the processed material S is sent from the supply path 14 to the front of the first flat die 10. Since the ejection plate 15a of the transport device 15 is disposed at the lower position, the workpiece S is in a state of being held on the tapered surface 15b at the upper end of the ejection plate 15a.

  At the beginning of the rolling process, the microcomputer 21 first controls the conveying device 15 to raise the protruding plate 15a, and as shown in FIG. 2, the workpiece material S is moved to the height of the upper surface of the first flat die 10. The workpiece S is supplied to the upper surface of the first flat die 10. Thereafter, the microcomputer 21 lowers the protruding plate 15a and places it at the lower position, and holds the workpiece S to be processed next on the tapered surface 15b at the upper end of the protruding plate 15a. The microcomputer 21 drives and controls the motors 13 and 18 to advance the second flat die 16, and to interrupt the wedge member 12 between the base 12 a and the first flat die 10. As a result, as shown in FIG. 3, the second flat die 16 moves forward, the upper flat die 11 rises in the first flat die 10, and the workpiece material S supplied to the upper surface of the first flat die 10 becomes It is sandwiched between the first and second flat dies 10 and 16.

  In the initial stage of starting the rolling process, in order for the work material S to be sandwiched between the first and second flat dies 10 and 16 (the biting state), It is necessary to advance the two flat dies 16 slowly.

  Thereafter, the microcomputer 21 advances along the first flat die 10 in a state where the workpiece material S is sandwiched between the first and second flat dies 10 and 16, and the workpiece material S is moved forward. The processing of the outer peripheral surface is continued while applying rolling rotation. Then, when the processed material S passes through the first flat die 10, it falls to the lower portion and the processing is completed.

  When the processing of the processing material S is completed, the microcomputer 21 drives and controls the motor 18 to move the second flat die 16 backward. However, the processing material may be damaged when the second flat die 16 moves backward. Therefore, as shown in FIG. 8, the second flat die 16 is moved back at a speed several times faster than the speed at the time of forward movement to return to the initial position. Thereafter, the microcomputer 21 controls the transport device 15 and the motors 13 and 18 to repeat the same operation, so that the processing material S sent from the supply path 14 is sequentially processed.

  In Example 1, the figure which has arrange | positioned the 1st flat die 10 and the 2nd flat die 16 up and down is shown, and a process raw material is inserted | pinched between the lower surface of the 2nd flat die 16 and the upper surface of the 1st flat die 10. Although what is rolled in a horizontal gap has been described, in the case of a processed material having a ridge at one end, the first flat die 10 and the second flat die 16 are arranged on the left and right sides so that the processed material does not fall. The processing material ridges protrude from the upper end surfaces of the flat die 10 and the second flat die 16 to the outside, and the lower portion of the processing material is sandwiched between the adjacent surfaces of the first flat die 10 and the second flat die 16 so as to be vertical. You may make it roll a process raw material in a clearance gap.

  As described above, according to the rolling processing apparatus of the present invention, the speed of the moving die is controlled by the servo motor, so that the moving die is moved back at a speed several times faster than the speed at the time of forward movement and returned to the initial position, so that the work efficiency is improved. Is good. In addition, at the beginning of the rolling process, when the work material is sandwiched between the first and second flat dies, the second flat die 16 needs to be moved slowly in order to sandwich the work material S accurately. However, it goes without saying that the subsequent advance speed is higher than the advance speed at the time when the workpiece is sandwiched, and the optimum process speed can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic of the rolling processing apparatus which shows Example 1 of this invention and is just before a process raw material is supplied. In the rolling processing apparatus of FIG. 1, it is the schematic of the rolling processing apparatus just before pinching the supplied process raw material between flat dies. In the rolling processing apparatus of FIG. 1, it is the schematic of the rolling processing apparatus of the state which pinched | interposed the processed raw material between flat dies. In the rolling processing apparatus of FIG. 1, it is the schematic of the rolling processing apparatus of the state which gives the rolling rotation to a processing raw material and processes the outer peripheral surface of a processing raw material. In the rolling processing apparatus of FIG. 1, it is the schematic of the rolling processing apparatus of the state which has discharged | emitted the processed raw material. In the rolling processing apparatus of FIG. 1, it is the schematic of the rolling processing apparatus which has started the backward movement after a forward movement. It is a block diagram of a motor control part. It is a wave form diagram of the speed of the moving flat die.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rolling processing apparatus 10 1st flat die 10b Rear surface 11 Upper flat die 12 Wedge member 12a Base 13 Motor 13a Ball screw 14 Supply path 15 Conveying device 15a Extruding plate 15b Tapered surface 16 2nd flat die 16a Screw hole 17 Feed screw rod 20 Control Unit 21 Microcomputer 22 Control Circuit S Processing Material

Claims (2)

The first flat die and the second flat die have a first flat die and a second flat die positioned along the first flat die, and the workpiece material supplied to the end of the first flat die A rolling process method for processing the outer peripheral surface while rotating the processed material by moving the second flat die along the first flat die,
A state in which the second flat die moves parallel to the first flat die by driving the motor by screwing a feed screw rod that rotates by driving the motor into a screw hole formed in the second flat die. A rolling process method characterized by being controlled. The first flat die and the second flat die have a first flat die and a second flat die positioned along the first flat die, and the workpiece material supplied to the end of the first flat die A rolling processing device for processing the outer peripheral surface while rotating the processed material by moving the second flat die along the first flat die,
The second flat die is provided with a threaded hole penetrating, a motor is connected to a feed screw rod that is screwed into the screw hole, and the second flat die is moved by rotating the feed screw rod by driving the motor. The rolling processing apparatus is configured to control a state in which the second flat die moves in parallel with the first flat die by driving the motor.

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