JPH0119985B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a rolling machine for threading or splining a long and slender bar-shaped work, and particularly 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 mechanism 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.
, another cylinder mechanism 8 that expands and contracts in the left and right direction.
Connect to.

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 (A) is rotatably placed on the movable table 3 and its left end axis is By bringing the part into contact with the tailstock 6 and moving the movable base 3 to the right via the workpiece moving mechanism 4, the workpiece (A) is moved with the right end of the workpiece (A) facing the die 2. ) was structured so that the left and right end shaft center portions were held between a tailstock 6 and a workpiece holder 7.

(Problems to be Solved by the Invention) In the above-mentioned conventional device, the workpiece holder 7 attached to the right side of the machine base 1 was only moved and adjusted in two steps in the left and right direction by the cylinder mechanism 8. , The rolling part of the workpiece (A) was limited, and it had the disadvantage that it could not be applied to many models.

Furthermore, since the workpiece moving mechanism 4 that moves the workpiece (A) left and right and the cylinder mechanism 8 that moves the workpiece receiver 7 left and right are arranged in series in the left and right directions with respect to the machine base 1, as shown in FIG. It became longer in the left and right direction and the space increased.

An 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 is constructed as follows.

That is, a movable stand that supports a workpiece is placed on one side of a pair of blades that face each other at a distance, a workpiece moving mechanism that moves the movable stand toward the blades is provided, and the end of the workpiece is placed on the other side of the blades. In the workpiece supporting device for a rolling machine, the workpiece moving mechanism includes a cylinder case disposed on the other side of the cutter, and a workpiece moving mechanism that moves the workpiece from the cylinder case to the opposite surface of each cutter. It consists of a cylinder mechanism having an operating rod whose extending end is connected to the movable table, and the workpiece holder can be adjusted to move toward and away from the cutter by a screw feed mechanism placed on the other side of the cutter. The configuration is as follows.

(Function) Since the present invention has the above configuration, the workpiece moving mechanism and the screw feeding mechanism are both located in the same direction with respect to the cutter, that is, the machine base.

Further, 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) Embodiments of the present invention will be described below 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 stand 15, and a rail 18 extending in a direction perpendicular to the reciprocating direction of the die 17 is fixed to the upper surface of the bracket 16.

In addition, a workpiece moving mechanism A is installed on the right side of the machine stand 15.
A hydraulic cylinder mechanism 19 is provided.

That is, the cylinder case 19a is attached to the right part of the machine base 15 by extending in a direction perpendicular to the reciprocating direction of the die 17, that is, to the right in FIG.
The operating rod 19b of this is passed between each die, and its left end is extended to the left of the machine base 15.

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 19b 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
A workpiece (A) consisting of a bar extending toward
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
9b is formed to have a smaller diameter than the outer diameter of the workpiece (A),
The support arm 25 and the actuating rod 19b 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 screw feed mechanism B for moving the receiver 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.

Further, as shown in FIG. 2, each of the guide rods 32 is arranged on both sides of the screw shaft 31 and fixedly supported by the brackets 30a and 30b.

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 axial 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 base 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 whose left end portion abuts the right end shaft center portion of the workpiece (A).

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

When rolling the workpiece (A), 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 (A) 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 (A) will be rolled.

When changing the machining position in the axial direction of the workpiece (A), if the rotation speed of the screw shaft 31 by the motor 33 is set to a predetermined value before the cylinder mechanism 19 is activated, the movable shaft 35 and The horizontal position of the workpiece holder 37 is set at an arbitrary position depending on the rotation speed of the screw shaft 31.

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

Further, since the workpiece (A) is moved in the direction of the workpiece receiver 37 by the cylinder mechanism 19, even if the workpiece receiver 37 moves arbitrarily in the axial direction, the workpiece (A)
The clamping force is always kept constant.

(Effects of the Invention) As is clear from the above description, the present invention provides a workpiece receiving device opposite to a tailstock on the workpiece moving mechanism side.
Since the screw feed mechanism is used to adjust 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.

Moreover, since the workpiece moving mechanism and the screw feeding mechanism are both located parallel to each other on one side of the cutter, the number of members protruding in the left and right direction is reduced, which has the effect of reducing the installation space of the rolling machine. play.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional side view of a main part in a first usage state showing an embodiment of the present invention, FIG. 2 is a cross-sectional plan view of the main part, and FIG. 3 is a partial cross-sectional side view showing a conventional example. 15: Machine base, 16: Bracket, 17: Die (cutting tool), 18: Rail, A: Workpiece movement mechanism, 1
9: Cylinder mechanism, 19a: Cylinder case, 1
9b: Actuation rod, 21: Movable base, 24: Tailstock, 25: Support arm, 30: Support case, B:
Screw feed mechanism, 31: Screw shaft, 32: Guide rod, 33: Motor, 33a: Toothed pulley, 33
b: timing belt, 34: rotation detector, 3
5: Movable axis, 36: Connector, 37: Workpiece receiver.

Claims (1)

[Claims] 1. A movable platform for supporting a workpiece is disposed on one side of a pair of blades facing apart from each other, and a workpiece moving mechanism is provided to move the movable platform toward the blades,
In a workpiece support device for a rolling machine, which is provided with a workpiece holder for receiving the end of the workpiece on the other side of the cutter, the workpiece moving mechanism includes a cylinder case arranged on the other side of the cutter, and a It consists of a cylinder mechanism having an operating rod that passes between opposing surfaces of the cutter and has its extending end connected to the movable base, and the workpiece holder is connected to the cutter by a screw feeding mechanism arranged on the other side of the cutter. A workpiece support device for a rolling machine, characterized in that its movement can be adjusted in the direction toward and away from the rolling machine.