JPH0487764A - Grinding device - Google Patents

Abstract

PURPOSE:To stably convey a ground workpiece of thinned and stepped column shape with its flat end surface supported by horizontally arranging a rotary carrier, which conveys the ground workpiece, to be rotated in a horizontal surface. CONSTITUTION:A rotary carrier 2, which has a plurality of ground workpiece mounting surfaces F divided by conveying pawls 5 to transfer a column-shaped ground workpieces 6 by supporting their flat end surface with the ground workpiece mounting surfaces F, is rotated in a horizontal surface to give turning force to the column-shaped ground workpiece 6 in a grinding position by an adjusting wheel 3. Under this condition, grinding work is performed by a grinding wheel 4 relating to the column-shaped workpiece 6 in the grinding position.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a grinding device suitable for grinding a flat cylindrical workpiece such as a ferrite core.

(Summary of the Invention) The present invention provides a grinding device for grinding a flat cylindrical workpiece such as a ferrite core, in which a rotary carrier rotating in a horizontal plane is used to support the flat end face of the workpiece. This machine transports and grinds objects to be ground, and aims to improve the ability to stably transport and grind objects.

(Prior Art) A conventional grinding device transports a cylindrical workpiece in an upright state (with its circumferential surface supported by a transport means). Furthermore, the workpieces to be ground have been processed using a single-shot method in which each workpiece is processed one by one.

(Problems to be Solved by the Invention) By the way, in conventional grinding devices, when conveying a cylindrical workpiece, it is carried out in an upright state with its circumferential surface supported. Transport is extremely unstable, as there is a risk of the product falling over. In addition, since processing is carried out in a single-shot method, there is a problem in that the processing capacity is low and mass production cannot be carried out easily.

SUMMARY OF THE INVENTION In view of the above-mentioned points, an object of the present invention is to provide a grinding device that can stably transport objects to be ground and improve processing ability.

(Means for Solving the Problems) In order to achieve the above object, the present invention has a plurality of workpiece placement surfaces partitioned by conveying claws, and the workpiece placement surfaces have a circular shape. A rotary carrier that supports and transports the flat end surface of a columnar workpiece is rotated in a horizontal plane, and a rotational force is applied to the cylindrical workpiece at the grinding position by an adjustment wheel, and the cylindrical workpiece at the grinding position is The structure is such that objects are ground using a rotating grindstone.

(Function) The grinding device of the present invention has a configuration in which a rotary carrier for conveying the object to be ground is arranged horizontally and rotated in a horizontal plane,
Since the object to be ground is transported with the flat end surface of the object to be ground placed on the object placement surface of the rotary carrier,
Unlike conventional equipment, there is no fear that the object to be ground will fall during transportation, and the object to be ground can be transported stably.
It becomes possible to perform stable grinding during grinding. In addition, since the rotary carrier is rotated to transport and grind the workpiece, the work of supplying, transporting, grinding, and taking out the workpiece is done consistently and continuously, allowing the machine to process the workpiece. Capacity is improved and productivity can be improved.

(Example) Hereinafter, an example of the grinding device according to the present invention will be described with reference to the drawings.

1 to 3, reference numeral 11 indicates a main body frame, on which a hopper 12 and a tray 13 are supported. In addition, there is a hole feeder 1 on the main frame.
4 and a near feeder 1 connected thereto. The hopper 12 temporarily stores the unprocessed cylindrical workpiece 6 shown by the imaginary line in FIG. The ball feeder 14 vibrates the supplied cylindrical workpieces 6 to be aligned in a constant posture within the spiral groove, and supplies them to the linear feeder 1 . The cylindrical workpiece 6 is made of ferrite or the like and has a thin ((i-flat) cylindrical shape, and is aligned with the flat end surfaces touching each other during conveyance, and is moved over the linear feeder 1 by the linear grinder. The feeder moves forward in the direction of arrow G due to the vibration of the feeder.

As shown in FIGS. 4 to 6, the rotary carrier 2 is disposed horizontally in order to stably transport and process a thin cylindrical workpiece 6 to be ground. The rotary carrier 2 has a disk shape with a raised annular upper end surface, and the annular upper end surface is divided into a plurality of ground object mounting surfaces F by conveying claws 5. Then, as shown in FIG. 2, the rotary carrier 2 rotates in a horizontal plane under the rotational driving force of the carrier motor 21 attached to the lower part of the main body frame 11, and the rotary carrier 2 rotates in a horizontal plane to place the workpiece on each of the workpiece mounting surfaces F. Place object 6 one by one.

In this embodiment, it is divided into 30 to 33 sections (the number of divisions may be other than this depending on the product) by the conveying claws 5. The rotary carrier 2 rotates (for example, 2 r, p, +
s, / 30 division time), the object to be ground 6 is transported to the grinding position P by the transport claw 5.

In addition, a bottom piece 8 made of carbide material is arranged and fixed on each of the ground object mounting surfaces F of the rotary carrier 2 for wear resistance, as shown in FIGS. 5 and 6.

The bottom piece 8 has a diameter of 4 mm and is mounted on a rotary carrier in order to reduce the contact area between the workpiece 6 and the workpiece mounting surface F and improve the rotation of the workpiece 6 when processing the cylindrical workpiece 6. It is arranged to protrude from the annular upper end surface of No. 2 by about 0.11.

The adjusting wheel 3 and the rotary grindstone 4 are arranged so as to face each other with the grinding position P in between and rotate within a horizontal plane. The adjusting wheel 3 receives the rotational driving force of an adjusting wheel motor 22 attached to the lower part of the main body frame 11 as shown in FIG. It is provided to give rotation, so the fourth
As shown in the figure, the rotary carrier 2 is supported at an eccentric position above the rotary carrier 2 so as to be in contact with the object to be ground at the grinding position P. A #800 diamond is electrodeposited on the outer periphery of this adjustment wheel, and by creating friction with the object to be ground 6 and rotating the object to be ground at a predetermined number of rotations, the rotation of the grinding wheel 4 This is intended to prevent the workpiece 6 from spinning idly and to improve the roundness of the part to be machined.

The rotary whetstone 4 receives rotational driving force from a whetstone motor 23 attached to the lower part of the main body frame 11 as shown in FIG. Rotation speed is 8000 r, p
, n. Furthermore, the spindle unit 15 that pivotally supports the grinding wheel 4 allows adjustment in 0.01 mm increments in the height direction and cutting direction during grinding, making it possible to set the dimensions during grinding.

Furthermore, in order to prevent the cylindrical workpiece 6 from floating during grinding, a 0.01 m-
A grinding object holding part 16 that can be set in units is provided.

Dust generated during grinding is collected using a vacuum.

As shown in FIG. 6, grooves 24 are provided in the conveying claws 5 on the rotary carrier 2 so as not to contact the rotary grindstone 4 when passing through the grinding position P.
It is made of carbide material to resist abrasion due to rotation.

A take-out chute 25 is disposed along the rotary carrier 2 at the product take-out position Q, and the product receiver that receives the processed workpiece 6 through the chute 25 is either a box 17 or a receiver fixed to the main body frame 11. It is placed on a box support stand 18.

After the processed workpiece 6 is taken out, the workpiece placement surface F on the rotary carrier 2 is placed on the unground workpiece 6.
It is cleaned by a cleaner 19 before reaching the linear feeder 1 to which it is supplied. The cleaner 19 uses a nylon brush to remove and collect dust on the rotary carrier.

Next, the overall operation of the above embodiment will be explained. Hopper 12
The cylindrical workpiece 6, such as ferrite, that has fallen down is fed to the ball feeder 14 via the tray 13, and the ball feeder 14 feeds it to the linear feeder 1 in a constant posture, that is, the flat end face of the cylindrical workpiece 6. is sent out in a position where it is in contact with the surface. The workpiece 6 that has reached the tip of the linear feeder 1 sequentially enters the workpiece placement surface F on the rotary carrier 2 that is slowly and continuously rotating, and is placed on the bottom piece 8 of the workpiece placement surface F. The object to be ground 6 is transferred to the grinding position P with the lower end surface thereof placed thereon.

At the grinding position P, the adjusting wheel 3 and the rotary grindstone 4, whose circumferential surfaces face each other, are both rotating counterclockwise.
The rotation speed of the adjustment wheel 3 is about 40 to 50 r, p, m, and the rotation speed of the rotary grindstone 4 is about 8000 r, p, m, and there is a difference in rotation speed between the two, so that the cylindrical workpiece 6 is Adjustment wheel 3
When the grinding wheel 3 reaches between the grinding wheel 4 and the grinding wheel 4, a rotational force is applied to the object 6 by the adjusting wheel 3, and at the same time the object 6 comes into contact with the grinding wheel 4, thereby grinding a predetermined groove 20 as shown in FIG. The groove dimensions of the cylindrical workpiece 6 are finally determined by:
As shown in FIGS. 4 and 5, the centers of the grinding wheel 4, the object to be ground 6, and the adjusting wheel 3 are aligned in a straight line, and the adjusting wheel 3 and the grinding wheel 4 are at the closest position.

The workpiece 6 to be ground that has passed through the grinding position tP has a drum shape with flanges at both ends of the small diameter shaft part 30, and the workpiece 6 that has been processed and has reached the product removal position Q (if the workpiece is ferrite) , ferrite drum core) are taken out into the box 17 via the take-out chute 25 by air only when the rotary carrier 2 is rotating.

In the above embodiments, the workpiece to be ground before machining was exemplified as a cylindrical object with no steps and the same diameter as shown in the imaginary line in FIG. 7, but a stepped object as shown in the imaginary line in FIG. In the case of the object to be ground 6A (the diameter of which changes from the middle of the height), the grinding process of the groove portion 2OA can be performed in the same way. Such a change in the type of workpiece to be ground is handled by replacing the rotary carrier 2 and the like.

Further, the processing ability of the workpiece to be ground is determined by the rotation speed of the rotary carrier 2, and a speed control motor is used as the carrier motor 21 in order to determine the optimum conditions depending on the type of workpiece.

(Effects of the Invention) As explained above, according to the grinding apparatus of the present invention, the rotary carrier for conveying the workpiece to be ground is arranged horizontally and rotated in a horizontal plane. The columnar object to be ground can be supported by its flat end face and transported stably, and can be stably ground during the grinding process. In addition, since the rotary carrier is rotated to transport and grind the workpiece, the work of supplying, transporting, grinding, and taking out the workpiece is done consistently and continuously, allowing the machine to process the workpiece. Improved ability,
Productivity can be improved.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an embodiment of a grinding device according to the present invention;
Figure 2 is a front view of the same, Figure 3 is a right side view of the same, Figure 4 is a plan view of the same main parts, Figure 5 is a side view of the same main parts, and Figure 6 is the rotary with the object to be ground removed. Main part side sectional view of carrier part,
FIG. 7 is a front sectional view of the cylindrical workpiece after processing, and FIG. 8 is a front sectional view of the stepped cylindrical workpiece after processing. DESCRIPTION OF SYMBOLS 1... Linear feeder, 2... Rotary carrier, 3... Adjustment wheel, 4... Rotating grindstone, 5... Transfer claw, 6... Cylindrical grinding object, 8... Bottom Pieces, 11...
・Body frame, 12...Hopper, 14...Pole feeder 15...Spindle unit, 16...
・Grinded object holding part, 17...Product holder is box, 20.2
OA...Groove, F...Grinded object placement surface.

Claims (2)

[Claims] (1) A rotary carrier that has a plurality of workpiece placement surfaces partitioned by transport claws and that supports and transfers the flat end surface of a cylindrical workpiece on the workpiece placement surface in a horizontal plane. A grinding device characterized by rotating the cylindrical workpiece at the grinding position, applying rotational force to the cylindrical workpiece at the grinding position using an adjustment wheel, and grinding the cylindrical workpiece at the grinding position using a rotary whetstone. . (2) The grinding device according to claim 1, wherein a bottom piece made of a carbide material is disposed on the workpiece mounting surface so as to slightly project from the flat end surface of the cylindrical workpiece.