JP3336453B2 - Rotary processing equipment for bar - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an apparatus for rotating a bar.

[0002]

2. Description of the Related Art In conventional thread rolling using a rolling roll, for example, the material surface is plastically deformed while the material is rotated by power or freely rotated and synchronously rotated with both of the rolling rolls. And this rolling die roll is formed by forming a large number of Hachimaki mountains on the outer peripheral surface of a cylinder at the same interval and the same shape, and keeps three of these rolls with their rotation axes parallel to each other. Then, while rotating the material (wire) about the axis, the material is inserted into the center of the three rolls in order from the tip, and is threaded. Return it again and remove it from the dice.

[0003]

Therefore, it is impossible to roll a screw on a material that cannot be rotated. Also,
He could only make the screws of Sankakusan and Sankakudani. An object of the present invention is to solve the above problems and to provide an apparatus capable of processing screws of various shapes and other irregularities even on a material that cannot be rotated.

[0004]

[0005]

[0006]

Means for Solving the Problems To solve the above problems,
Therefore, the configuration of the present invention is as follows. In other words, the apparatus of the first configuration includes a disk-shaped rotor rotatably held around a horizontal axis, a rotating means of the rotor, and diametrically opposed and parallel to each other near a periphery of a front end surface of the rotor. A pair of rails having an appropriate chord-shaped sliding surface, a tool holder slidably engaged with each of the pair of rails, a tool fixed to the tool holder, and a rear side of the tool holder. A fixed pair of racks, a pinion that meshes with the pair of racks, a pinion shaft fixed to the front end, and a pinion shaft that penetrates rearward through the rotation center of the rotor at an interval, and rotation of the pinion shaft. Means for moving the tools in opposite directions along the rail via the rack and the pinion due to a rotational speed difference between the rotor and the pinion.

[0007]

The device of the second configuration is such that the tool is a rolled flat die in addition to the device of the first configuration.

[0009]

Embodiments of the present invention will be described below with reference to an embodiment shown in the drawings. 1 and 2, the outline of the apparatus of the present invention is configured as follows. That is,
Disk-shaped rotor 4 held rotatably about a horizontal axis
A pair of rails 6 having a chord-shaped sliding surface parallel to each other and diametrically opposed in the vicinity of a peripheral edge of a front end surface of the rotor 4;
, A rolling flat die 8 fixed to the die holder 7, a pair of racks 9 fixed to the rear side of the die holder 7, and a pair of racks 9. A pinion 11 that meshes with the pinion 11; a pinion shaft 12 that is fixed to the front end of the pinion 11; Then, the die holder 7 is moved in the opposite directions along the rail 6 via the rack 9 due to a difference in rotation speed between the rotor 4 and the pinion 11.

The rotor 4 is rotatably supported on a bearing base 1 via a main bearing 2. 3 is a bearing cap. In the rotor 4, a disk portion 4a is integrally formed concentrically with a boss portion 4b received by the bearing 2, and a crescent portion 4c is integrally formed on a peripheral edge portion diametrically opposed thereto. In the rotor rotating means 5, the rotor 4
The main motor 5a is installed on the side, and a drive pulley 5b and a driven pulley 5d are provided on the outer periphery of the disk portion 4a, and a belt 5c is stretched between them. An H-shaped steel rail member 6 is slidably engaged with the crescent portion 4c. End faces diametrically opposed to each other across the rotation center of the rotor 4 have chordal sliding surfaces parallel to each other.

In the die holder 7, a radially inner end face of the rectangular parallelepiped main body serves as a die mounting surface, and the rolling flat die 8 is mounted by bolts 7c. The opposite surface is a sliding guide portion 7d, which is fitted to the rail 6. A rack 9 is fixed to the rear surface of the die holder 7 by bolts 7c.
These racks 9 have a tooth tip surface having a tip surface parallel to the sliding surface of the rail 6. A slave motor 13b and a belt transmission 13a are provided as the pinion rotating means 13. An oil supply hole 12a penetrates concentrically with the rotation axis of the pinion shaft 12.

The operation state will be described above. Now, the main motor 5b and the sub motor 13b are driven to keep the rotation speeds of the rotor 4 and the pinion shaft 12 the same. In this state, the wire as the workpiece (bar) is advanced toward the center of rotation. The dies are separated from each other in opposite directions with respect to the rotation center. Then, the material is held and fixed between the dies by an amount corresponding to the length of the screw. Next, by changing the rotation speed of the slave motor 13b and the rotation speed of the pinion shaft 12 by known rotation speed control means such as a sequencer, the rotor 4 and the pinion shaft 1 are rotated.
Due to the difference between the two rotation speeds, the die moves toward the center via the engagement between the pinion 11 and the rack 9.
Now, while the rotor 4 makes one rotation, the die also makes one rotation, during which the die moves in the diameter direction by the circumferential length of the material (wire). Then, this operation is performed, for example, 5 to 6
If it is turned, the screw molding is completed. During this processing, oil that serves both cooling and lubrication is supplied from the oil supply hole 12a.
In this embodiment, a bar having a relatively small diameter and a small rigidity can be machined.

FIGS. 3 and 4 show another embodiment, in which the rack 9, the pinion 11 and the pinion shaft 12 are removed. That is, the disk-shaped rotor 4 rotatably held about the horizontal axis, the rotating means 5 of the rotor, and diametrically opposed in the vicinity of the periphery of the front end face of the rotor,
A pair of rails 6 having chordal sliding surfaces parallel to each other, a tool holder 7 slidably engaged with each of the pair of rails, a tool 8 fixed to the tool holder, Means 14. The tool 8 is moved in opposite directions along the rail 6 by the tool moving means 14 while rotating the rotor 4.

Here, the tool moving means 14 protrudes from the end face of the tool holder in one of the sliding directions.
4a, 14a, and a roller 1 attached at its tip so as to be rotatable about an axis parallel to the rotation axis of the rotor 4.
4b, 14b and the rollers 14b, 14b, which are inscribed in the rotor 4b, 14b,
A guide ring 14c having a tapered inner surface that extends toward the tool-side end surface, a leg portion 14d hanging down from the lower surface thereof,
It comprises a guide rail 14e for slidably guiding this in a direction parallel to the rotation axis of the rotor 4, and a reciprocating drive source 14f composed of a fluid piston cylinder connected to the legs 14d.

The operation state will be described above. Now, the main motor 5b is driven to keep the rotation speed of the rotor 4 constant. The dies 8 are separated from each other in opposite directions with respect to the rotation center by centrifugal force. In this state, the wire as the workpiece (bar) is advanced toward the center of rotation (from left to right in FIG. 4) and held and fixed between the dies by an amount corresponding to the length of the screw. Next, when the tool moving means 14 is actuated to drive the reciprocating drive source 14d, the guide ring 14c moves toward the rotor 4 (from left to right in FIG. 4) and rolls in contact with the tapered surface thereof. 14b, 14b
Receives a force inward of the guide ring 14c in the radial direction. Then, the dies 8, 8 approach each other while rotating (revolving) together with the rotor 4, sandwich the bar in the diametrical direction and bite, and thereafter, rotate around the bar 5 to 6 times, and the screw processing is completed. This embodiment is suitable for a bar having a relatively large diameter and a large rigidity.

The present invention is not limited to the examples and embodiments described above, but includes various modifications without departing from the spirit and scope of the appended claims.

[0017]

According to the configuration of the present invention, screws and other irregularities can be machined with a simple configuration on a material that cannot be rotated. In addition, various types of threads and valleys, and other irregularities can be easily machined depending on the tool.

[Brief description of the drawings]

FIG. 1 is a front view of one embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a front view of another embodiment of the present invention.

FIG. 4 is a sectional view taken along the line III-III of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bearing stand 2 Main bearing 3 Bearing cap 4 Rotor 4a Disk part 4b Boss part 4c Crescent part 5 Rotor rotation means 5a Belt transmission device 5b Main motor 6 Rail (H-shaped steel) 7 Dice holder 7a Main body 7b Mounting surface 7c Bolt 7d Sliding Guide portion 8 Rolled flat die 9 Rack 10 Bolt 11 Pinion 12 Pinion shaft 12a Oil supply hole 13 Pinion rotating means 13a Belt transmission 13b Slave motor 14 Dice moving means 14a Arm 14b Roller 14c Guide ring 14d Leg 14e Guide rail 14f Reciprocation Drive source

Claims (2)

(57) [Claims] 1. A disk-shaped rotor rotatably held about a horizontal axis, a rotating means of the rotor, and a chord-shaped parallel to each other diametrically opposed in the vicinity of a peripheral edge of a front end face of the rotor. A pair of rails having sliding surfaces, a tool holder slidably engaged with each of the pair of rails, a tool fixed to the tool holder, and a pair of tools fixed to a rear side of the tool holder. A rack, a pinion that meshes with the pair of racks, a pinion shaft fixed to the front end of the pinion, a pinion shaft that penetrates backward through the rotation center of the rotor with an interval, and a rotation unit for the pinion shaft, A rotating apparatus for a rod material, wherein the tool is moved in opposite directions along the rail via the rack and the pinion by a rotation speed difference between the rotor and the pinion. 2. The tool according to claim 1, wherein said tool is a rolled flat die.
A rotary processing device for a bar as described above.