JPH0211952Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a rolling machine for threading or splining a long and slender bar-shaped work, and particularly relates to a work supporting device thereof.

(Prior Art) A conventional workpiece support device for a rolling machine is shown in FIG. 3.

That is, a workpiece moving mechanism 4 for reciprocating a movable table 3 in the left-right direction by means of a cylinder 5 is provided on the left side of a machine stand 1 that supports a die (cutting tool) 2.

On the other hand, a workpiece holder (center) 7 is arranged on the right side of the machine table 1, facing the tailstock (center) 6 provided on the left side of the movable table 3.
is connected to a cylinder mechanism 8 that expands and contracts in the left-right direction.

Note that 9 is a case that supports the cylinder mechanism 8;
Reference numeral 10 denotes a bracket that supports the support case 10 on the machine base 1.

Then, the cylinder mechanism 8 is reciprocated to position the workpiece holder 7 on either the left or right side, and then the workpiece is rotatably placed on the movable table 3 and the left end shaft center is placed in the tailstock. By bringing the workpiece into contact with the tool 6 and moving the movable table 3 to the right via the workpiece moving mechanism 4, the right and left shaft centers of the workpiece can be moved to the tailstock with the right end of the workpiece facing the die 2. It had a structure in which it was held between a tool 6 and a workpiece receiver 7.

(Problems to be Solved by the Invention) In the conventional device described above, the workpiece holder 7 attached to the right side of the machine base 1 is only moved and adjusted in two steps in the left and right direction by the cylinder mechanism 8. However, the rolling part of the workpiece was limited, and it was not compatible with many different models.

The object of the present invention is to obtain a novel workpiece support device for a rolling machine that eliminates the above-mentioned drawbacks.

(Means for Solving the Problems) In order to achieve the above object, the present invention has a structure in which the workpiece holder can be adjusted to move toward and away from the cutter using a screw feeding mechanism. .

(Function) Since the present invention has the above configuration, by adjusting the rotation speed of the screw feeding mechanism, the workpiece holder can be moved to any desired position in the direction toward and away from the cutter.

As a result, the rolling position of the workpiece in the axial direction can be changed arbitrarily.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

In FIG. 1, reference numeral 15 denotes a machine base, and a die (cutting tool) 17 extending vertically is attached to this machine base 15.

The die 17 is formed by a pair of flat dies arranged facing each other at a predetermined interval and driven reciprocally in opposite directions up and down in synchronization with each other.

A bracket 16 projecting leftward is fixed to the machine base 15, and a workpiece moving mechanism A is attached to this bracket 16.

That is, the die 17 is placed on the upper surface of the bracket 16.
A rail 18 extending in a direction perpendicular to the reciprocating direction of the rail 18 is fixed.

In addition, a hydraulic cylinder mechanism 19 is attached to the right side of the machine base 15, and its operating rod 19a is extended to the left of the machine base 15, and the rail 1
8 and extends in parallel with the rail 18.

A movable base 21 is placed on the rail 18 so as to be slidable in the left-right direction, and the lower part of the movable base 21 is connected to the left end of the operating rod 19a via a connector 22.

As a result, the movable base 21 is reciprocated in the direction toward and away from the die 17 by expanding and contracting the cylinder mechanism 19 .

And parallel to the rail 18, that is, the die 17
Worker consisting of bars extending towards
It is placed on the upper part of the movable base 21 and is held rotatably but immovably in the left-right direction via the tailstock 24 and the support arm 25.

Note that the support arm 25 and the actuation rod 1
9a is formed to have a smaller diameter than the outer diameter of the worker,
The support arm 25 and the actuating rod 19a are prevented from coming into contact with the die 17 portion.

A box-shaped support case 3 is located on the right side of the machine stand 15.
0 protruding and fixed to the right, and this support case 3
Attach the screw feed mechanism B for moving the receiver, which is a feature of the present invention, to 0.

The screw feeding mechanism B is designed as shown in FIGS. 1 and 2.

That is, brackets 30a, 30b are provided at the left and right ends of the support case 30, and these brackets 30a,
Screw shafts 31 and 2 extending in the left-right direction at 30b
The guide rods 32 are arranged in parallel.

The screw shaft 31 is connected to the brackets 30a and 30b.
The rear end (first
(right end in the figure) is connected to the motor 33 via a toothed pulley 33a and a timing belt 33b. Note that 34 is a rotation detector that detects the rotation of the screw shaft 31.

The guide rods 32 are arranged on both sides of the screw shaft 31 and fixedly supported by the brackets 30a and 30, as shown in FIG.

A movable shaft 35 parallel to the screw shaft 31 is disposed below the screw shaft 31 mentioned above.

This movable shaft 35 has its front part attached to the bracket 30.
a through a bush so as to be slidable in the left-right direction, and the rear portion thereof is connected and supported to a screw shaft 31 and a guide rod 32 through a connector 36.

That is, the upper part of the connector 36 is screwed onto the threaded shaft 31 and slidably fitted into each guide rod 32, and the rear part of the movable shaft 35 is fixedly supported by the lower part of the connector 36.

A taper hole that widens toward the left is formed in the left end shaft center of the movable shaft 35, and a columnar workpiece holder 37 is fitted and locked into the taper hole.

The workpiece holder 37 is attached to the movable table 21 described above.
It is located on the same axis as the tail stock 24 on the side, and has a conical tail stock portion at its left end that abuts the right end shaft center portion of the worker.

Next, the operation mode of the above embodiment will be explained.

When rolling workpieces, first
At the initial position shown by the solid line in the figure, the screw shaft 31 is rotated by a predetermined amount in the forward direction via the motor 33.

Then, the movable shaft 35 moves forward via the connector 36 as shown by the imaginary line in FIG.
7 moves to a preset left position.

Next, the cylinder mechanism 19 is shortened to move the movable base 21 to the right.

Then, the workpiece placed on the movable table 21 will be
When the right end reaches the workpiece receiving tool 37 position, the left and right ends thereof are held between the tailstock 24 and the workpiece receiving tool 37.

In this state, if the pair of dies 17 approach each other and move relative to each other in the vertical direction, the workpiece will be rolled.

When changing the machining position of the workpiece in the axial direction, the number of revolutions of the screw shaft 31 by the motor 33 is set to a predetermined value before the cylinder mechanism 19 is activated, and the movable shaft 35 and the workpiece holder are 37 in the left and right direction is set to an arbitrary position depending on the rotation speed of the screw shaft 31.

Thereby, the rolling position of the worker can be set at any position in the axial direction of the worker with respect to the die 17.

Further, since the workpiece is moved in the direction of the workpiece holder 37 by the cylinder mechanism 19, even if the workpiece holder 37 moves arbitrarily in the axial direction, the force that clamps the workpiece is always maintained constant. .

(Effects of the invention) As is clear from the above explanation, the present invention has a workpiece holder opposite to a tailstock on the workpiece moving mechanism side.
Since the screw feed mechanism adjusts the movement in the direction toward and away from the die, it is extremely easy to arbitrarily change the rolling part of the workpiece in the axial direction of the workpiece, and it is possible to quickly stage various types of workpieces. It has the effect of being able to be processed even if it is removed.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional side view of a main part of an embodiment of the present invention in a first usage state, FIG. 2 is a cross-sectional plan view of a main part thereof, and FIG. 3 is a partial cross-sectional side view of a conventional example. 15: Machine base, 16: Bracket, 17: Die (cutting tool), A: Workpiece movement mechanism, 18: Rail, 1
9: Cylinder mechanism, 19a: Actuation rod, 21:
Movable base, 24: Tailstock, 25: Support arm, 3
0: Support case, B: Screw feed mechanism, 31: Screw shaft, 32: Guide rod, 33: Motor, 33
a: toothed pulley, 33b: timing belt,
34: Rotation detector, 35: Movable axis, 36: Connector, 37: Workpiece receiver.

Claims (1)

[Scope of utility model registration request] A movable stand that supports the workpiece is disposed on one side of the cutter, a workpiece moving mechanism is provided to move the movable stand toward the cutter, and a workpiece holder that receives an end of the workpiece is provided on the other side of the cutter. 1. A workpiece support device for a rolling machine comprising: a workpiece support device for a rolling machine, characterized in that the workpiece holder can be adjusted to move toward and away from a cutter using a screw feeding mechanism.