JPH0611732Y2 - Polished steel end face aligning device with pinch device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is a polishing machine equipped with a pinch device for accurately aligning the end faces of a polished steel bar when the end face of the polished steel bar is processed by a dedicated processing machine. The present invention relates to an end face aligning device for steel bars.

[Conventional technology]

There are various types of devices for aligning end surfaces of a long bar material such as a polished steel bar for end surface processing.

For example, put a long bar on a rotating aligning roll, continue to rotate the roll until several long bars come into contact with the stopper and converge, and stop the rotation of the roll when converged. There is a device for aligning the end faces. In this device, all the rolls must continue to rotate until several long rods come into contact with the stopper and converge, so the power for rotating the rolls is large and therefore the running cost is high. There's a problem.

There is also a device in which one end surface of a long bar material placed on a holding plate is pushed by a pusher device, the long bar material is moved in the axial direction, and the other end surface is brought into contact with a stopper. However, in this device, unless the optimum pusher speed is selected according to the length and weight of the long bar, the long bar will be repelled and returned after it comes into contact with the stopper, so that accurate end face alignment cannot be performed. There is a problem.

Further, the present applicant has filed as Japanese Patent Application No. 63-45561.
Place the polishing steel bar on the polishing steel bar holding plate attached to the upper end of the multiple levers, tilt each lever in synchronization with the processing machine, and use the polishing steel bar mounted on the polishing steel bar holding plate as a stopper. An application was filed for a device capable of adjusting the core height at the same time when the end faces of the polished steel bars are aligned by bringing them into contact with each other.

When aligning the end faces of polished steel bars with this device, the polished steel bars are subjected to pre-drawing and straightening, and then the surface is coated with coolant oil, which makes them slippery. In addition, since it is necessary to process the polished steel bar with high efficiency, the tilting speed of the lever is high, and therefore the collision speed of the polished steel bar against the stopper is high, and the polished steel bar is returned by the repulsive force after colliding with the stopper, There is a problem that accurate end face alignment cannot be performed.

[Problems to be solved by the device]

The present invention puts a polishing bar steel on a polishing bar steel holding plate attached to the upper ends of a large number of levers, tilts each lever toward the processing machine in synchronization with the levers, and mounts it on the polishing bar steel holding plate. By abutting the polished steel bar against the stopper, it is possible to prevent the polished steel bar from being repulsed and returned due to a collision with the stopper in the polishing steel bar end face aligning device that adjusts the core height at the same time as aligning the polished steel bar end face. Therefore, it is an object to accurately align the end faces of the polished steel bars.

[Means for Solving the Problems]

In order to solve the above problems, the means adopted by the present invention is to mount a polishing steel bar on a polishing steel bar holding plate attached to the upper ends of a large number of levers, and synchronize the levers to tilt them toward the processing machine. , Abrasion bar steel placed on the abrasion bar steel holding plate is held by the abrading bar steel holding plate in the abrading bar steel end face aligning device configured to adjust the core height at the same time when the abrading bar steel is brought into contact with the stopper. The pair of pinch members arranged so as to sandwich the polished steel bar between them are moved toward and away from each other via a synchronizing means driven by an air cylinder, so that the pair of pinched steel bars held by the polished steel bar holding plate are pinched. A pinch device configured to pinch with a member is attached to the upper end portion of the lever.

[Function of device]

By operating the air cylinder, a pair of pinch members are brought close to each other via a synchronizing means, and the pair of pinch members pinch the polished steel bar placed on the polished bar steel holding plate, and in this state, each lever is synchronized to machine the processing machine. The end surface of the polished steel bar collides with the stopper.

After the polishing steel bar has collided with the stopper, the polishing steel bar is stopped in place, and the pinch device attached to the upper end of the lever resists the frictional force between the pair of pinch members and the polishing steel bar. Then, it moves slightly to the stopper side together with the polished steel bar holding plate. However, the repulsive force caused by the collision with the stopper causes the polished steel bar to return.
This is prevented by the frictional force. Therefore, the end faces of the polished steel bars that have collided with the stopper can be aligned accurately.

The pinch pressure of the polished steel bar is adjusted by the pair of pinch members by adjusting the air pressure of the air cylinder for operating the synchronizing means.

〔Example〕

First, an end face aligning device for simultaneously aligning the end faces of the polished steel bar and adjusting the core height by tilting a lever having a polished steel bar holding plate attached to the upper end will be described, and then the pinch device part according to the present invention will be described. The details will be described.

As shown in FIGS. 1 to 3, a large number of box-shaped stands 1 each having a hollow interior are arranged at predetermined intervals along the direction of a processing core C of the processing machine M. .

The rotating shaft 3 is provided on the upper surface of each stand 1 by a pair of bearings 2.
However, it is supported at a right angle to the processing core C of the processing machine M and horizontally. A portion closer to the lower end than the central portion of the lever 4 is supported by the rotating shaft 3, whereby the lever 4 is
It is adapted to rotate in a vertical plane including the processing core C of the processing machine M.

On the upper end of the lever 4, a polished steel bar holding plate 5 for holding the polished steel bar B is attached in parallel with the rotating shaft 3. The polished steel bar holding plate 5 has a structure of holding three polished steel bars B at the same time, and the polished steel bar holding plate 5 is provided with a V-shaped groove 6.

The portion below the pivot of the lever 4 (the axis of the pivot 3) is inside the stand 1, and
The lower ends of the levers 4 supported by the levers are pivotally attached to a common link 8 via a connecting pin 7, whereby the levers 4 are supported.
Are linked together by links 8.

The tip of the rod 10 of the lever driving cylinder 9 is connected to the end of the link 8 via a knuckle 11.
A base end portion of the lever driving cylinder 9 is pivotally attached to a mounting base 13 via a pin 12.

As shown in FIG. 1, when the rod 10 of the lever driving cylinder 9 is protruding, each lever 4 is vertical, and when the rod 10 is retracted in this state, as shown by a chain double-dashed line. Each lever 4 is tilted toward the processing machine M.

The tilt angle (θ) of the lever 4 is substantially proportional to the stroke of the rod 10 of the lever driving cylinder 9, and the core height of the polished steel bar B is adjusted by determining the tilt angle (θ) of the lever 4.

A chuck 15 for mounting a tool (not shown) is attached to the tip of the spindle 14 of the processing machine M, and the chuck 15 moves back and forth along the processing core C.

An upper clamp tool 16 is provided in front of the chuck 15 of the processing machine M.
And a lower clamp tool 17 are provided along the vertical direction, and the chuck 15 of the processing machine M and the upper and lower clamp tools 16, 17 are provided.
A stopper 18 is provided between the two. The upper clamp tool 16 and the stopper 18 are provided in the cylinders 19 and 2 respectively.
It goes up and down by 0.

Further, as shown in FIGS. 1 and 3, between the adjacent levers 4, the pre-processed polished steel bar B is transferred to a polished steel bar holding plate 5 attached to the upper end of the lever 4. A transfer holding plate 21 for mounting is arranged. The transfer holding plate 21 transfers the polished steel bar B to the polished steel bar holding plate 5 by performing a rectangular motion that is a combination of a vertical movement and a horizontal linear motion.

A pinch device A according to the present invention is shown in FIGS. 1, 4 to 6.

The pinch device A is attached to the upper end portion of a specific one of the levers 4. The pinch device A is attached to each of the portions corresponding to the three V-shaped grooves 6 provided on the polished steel bar holding plate 5.

A support plate 22 is horizontally attached to the upper end of the lever 4, and a pinch device A is attached to the support plate 22. A pair of rotating shafts 24 are attached to a base 23 fixed to the upper surface of the support plate 22.
Are vertically supported at predetermined intervals along the direction perpendicular to the length direction of the polished steel bar B held by the polished steel bar holding plate 5. A rubber block fixing plate 25 is attached to each rotary shaft 24, and a rubber block 26, which is a pinch member, is fixed to the plate surfaces of the rubber block fixing plate 25 facing each other.

The lower end portion of each rotating shaft 24 projects downward from the support plate 22, and gears 27 having the same number of teeth are attached to the corresponding portion of each rotating shaft 24 and mesh with each other. A bracket 28 is attached to the lower surface of the support plate 22, and a main body 29 of the air cylinder S is pivotally attached to the bracket 28 via a pin 30. A lever 31 is fixed to the lower surface of one gear 27 meshing with each other along the radial direction, and the free end of this lever 31 and the rod 32 of the air cylinder S are pivotally attached via a knuckle 33. Has been done.

Therefore, the air cylinder S is operated to operate the rod 32.
The gears 27 that mesh with each other
The pair of rotation shafts 24 rotate in opposite directions via the.
As a result, the pair of rubber blocks 26 come close to or apart from each other.

Then, as shown in FIG. 7, the rod 32 of the air cylinder S is projected so that the pair of rubber blocks 26 are separated from each other. In this state, the three polished steel bars B are held by the transfer holding plate 21. From the same to the polished steel bar holding plate 5 at the same time,
When the polished steel bar B is inserted and held in the V-shaped groove 6 provided in each polished steel bar holding plate 5, the polished steel bar B is arranged between the pair of rubber blocks 26 in the portion of the pinch device A.

Next, when the rod 32 of the air cylinder S is retracted,
As shown in FIGS. 8 and 9, the polished steel bar B held by the polished steel bar holding plate 5 is a pair of rubber blocks 2
It is pinched by 6.

In this state, when each lever 4 is tilted toward the processing machine M by the lever driving cylinder 9, the tip surface of the polished steel bar B collides with the stopper 18.

After the polished steel bar B has collided with the stopper 18, the polished steel bar B is stopped at the spot, and the pinch device A mounted on the upper end of the lever 4 includes the pair of rubber blocks 2
6 against the frictional force between the steel bar 6 and the steel bar B
Although it moves a little to the stopper 18 side together with the above, the frictional force prevents the polished steel bar B from being returned by the repulsive force caused by the collision with the stopper 18. Therefore, the polished steel bar B colliding with the stopper 18
The end faces of are accurately aligned.

The upper and lower clamp tools 16 and 17 clamp the end portions of the polished steel bar B whose end surfaces are aligned to perform end face processing. After the tip portions of the polished steel bar B are clamped by the upper and lower clamp tools 16 and 17, the pair of rubber blocks 26 pinching the polished steel bar B may be separated from each other.

Since the polishing bar steel B is pinched by the pair of rubber blocks 26 by using the air pressure of the air cylinder S, the diameter of the polishing steel bar B can be freely pinched and the air of the air cylinder S can be compressed. By adjusting the pressure, the pinch pressure can be adjusted freely.

The synchronizing means for moving the pair of rubber blocks 26 close to and away from each other is not limited to the pair of gears having the same number of teeth as described above. The pinion may be engaged with each other and both tooth racks may be moved back and forth by an air cylinder.

[Effect of device]

The present invention puts a polishing steel bar on a polishing steel bar holding plate attached to the upper ends of a large number of levers, tilts the levers in synchronization with each other toward the processing machine, and mounts the polishing steel bar on the polishing steel bar holding plate. In a polishing steel bar end face aligning device configured to align the end faces of the polishing steel bar at the same time by bringing the steel bar into contact with the stopper, a pair of polishing steel bars held by the polishing steel bar holding plate is arranged so as to sandwich the polishing steel bar. The pinch members of the two are brought closer to each other through the synchronization means driven by the air cylinder.
Since the pinch device configured to pinch the polished steel bar held by the polished bar steel holding plate by the pair of pinch members is attached to the upper end portion of the lever by separating the pin,
The polished steel bar is not repelled and returned due to the collision with the stopper, whereby the end face alignment of the polished steel bar is accurately performed, and the precision of the end face machining of the polished steel bar is improved.

In addition, since the polishing bar steel is pinched by the pair of pinch members using the air pressure of the air cylinder,
The pinch can be freely adjusted according to the diameter of the polished steel bar, and the pinch pressure can be freely adjusted by adjusting the air pressure of the air cylinder.

Further, the pinch device according to the present invention can be easily mounted not only on a new end face aligning device but also on an existing device, and can be implemented at low cost.

[Brief description of drawings]

FIG. 1 is a side view of an end surface aligning device for a polished steel bar B equipped with a pinch device A according to the present invention, FIG. 2 is an enlarged side view of a portion of a stopper 18, and FIG. A front view showing a state in which the polished steel bar B is transferred from the plate 21 to the polished steel bar holding plate 5, FIGS. 4 to 6 are a side view, a front view and a plan view of the pinch device A, FIG. 7 and FIG. FIG. 8 shows a pair of polished rubber bars B by a pair of rubber blocks 26.
FIG. 9 is a plan view before and after pinching is performed, and FIG. 9 is a front view showing a state where the polished steel bar B is pinched by the pair of rubber blocks 26. The description of the reference numerals of the main parts constituting the present invention is as follows. A: Pinch device, B: Polished steel bar M: Processing machine, S: Air cylinder 4: Lever, 5: Polished steel bar holding plate 18: Stopper, 24: Rotating shaft 26: Rubber block (pinch member) 27: Gear (synchronous) means)

Claims (1)

[Scope of utility model registration request] 1. A polishing steel bar is mounted on a polishing steel bar holding plate attached to the upper ends of a large number of levers, and the levers are mounted on the polishing steel bar holding plate while being synchronized with each other and tilted toward the processing machine. By bringing the polishing steel bar into contact with the stopper, the polishing steel bar end face aligning device is configured to align the polishing steel bar end face and simultaneously adjust the core height. A pinch device having a configuration in which a pair of pinch members are moved toward and away from each other via a synchronization means driven by an air cylinder to pinch the polished steel bar held by the polished bar steel holding plate by the pair of pinch members. Is attached to the upper end of the lever, and an end face aligning device for a polished steel bar is provided with a pinch device.