JP2000254841A - Cutter griner for cutting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To quickly wash off the residue by directly and concentrately supply a solvent to a blade of a cutter. SOLUTION: An adaptor 4.1 is provided with a conduit 5.2 for supplying a cooling agent and a lubricant. The solvent is radially outwardly supplied to a blade of a cutter 2.1 from a radial inside through a conductor comprising the conduit part 5.2 in the adaptor 4.1 and a conduit part 5.3 in a grinding disc 4.2. To increase the pressure, a plurality of backets are mounted. These buckets are used to increase the pressure. The buckets may be also formed as pump buckets. First of all, the cooling agent and the lubricant reach the conduit part 5.2 through the conduit 5.1. The acceleration is generated by the centrifugal force when they are transferred from the conduit 5.1 to the conduit part 5.2, whereby the pressure is increased.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutter polishing device for a cutting machine. Such cutting machines are used to cut chips into chips, which are further processed industrially, for example, as raw materials for particleboard. See, for example, EP 0 626 234.

[0002]

A major problem with such cutting machines is that the service life of the cutter is relatively short. The cutter wears out and needs to be replaced as soon as possible after several hours of operation. That is, it must be changed a plurality of times for one work shift. The installation of a new sharp cutter is particularly expensive. That is, the desired cutting thickness results from the distance of the cutter with respect to the so-called wear plate, and the wear plate itself is a member constituting the crown-shaped cutter. As a result, replacing a dull cutter with a sharper cutter is time consuming and expensive. In particular, labor costs for replacing the cutter are increased.

As is well known, in the polishing process, coolant and lubricant are supplied to the polishing cutter in order to perform the polishing operation more efficiently, but the polishing process can be performed only relatively slowly due to the accumulation of heat. . Previously known devices have served the purpose, but there still appears to be room for improvement.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to form a cutter polishing apparatus for a cutting machine so that the polishing process can be performed more efficiently.

[0005]

This problem is solved by the features of claim 1. The inventor has recognized that when a polishing apparatus is formed as in the present invention, a coolant and a lubricant are supplied at high speed to a work place of the polishing apparatus.
Due to the centrifugal force of the polishing device, not only the flow rate of the solvent,
As the jet pressure of the solvent is also increased, the solvent is actually distributed to all face members of the cutter to be polished. In this way, the polishing process is performed faster and more efficiently. The polishing apparatus according to the present invention is also suitable for polishing a so-called free angle.

In any event, it is important that the coolant and lubricant are not supplied flat, for example as described in US Pat. No. 5,674,116, but directly and also on the cutter blade. It is to be supplied so as to be completely focused. In the above-mentioned U.S. patent, the coolant is guided through a centrally located hollow shaft and outwardly via a radial conduit provided in the polishing disc. In contrast, in the present invention, the inlet of the conduit for supplying the solvent is in any case provided radially outside the center of the device. This has the advantage that only a small distance has to be traveled after the polishing residues have been carried away, so that they are quickly washed away.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the drawings. FIG. 1 shows a cutter polishing device of a cutting machine. The cutting machine itself is not shown in this figure.

The polishing table 1 receives a crown-shaped cutter provided on the cutting machine, and is movable relative to the cutting machine so as to be moved away from the cutting machine toward the operating position of the polishing table 1. 2 are provided. In the embodiment shown in the figures, the crown cutter 2 is provided on the polishing table 1.
Since the crown-shaped cutter is provided on the roller 1.3, the polishing table 1 performs a regular movement about the axis of the crown-shaped cutter itself.

The crown cutter 2 has a number of cutter boxes 3 which can best be seen from FIG. The cutter box shown in FIG.
2. A cutter provided between the support member and the fixing plate.
3, a fastening screw 3.4 and a wear plate 3.5 are provided.

A member that plays an important role in the entire apparatus is the polishing apparatus 4. This polishing apparatus is shown in FIG.
More precisely it is shown in FIG.

The polishing device 4 is formed in a substantially bowl shape.

As shown in FIG. 2 and FIG.
Has an adapter 4.1, a polishing disc 4.2, and a polishing ring 4.3 provided on the polishing disc.

The polishing ring 4.3 abuts the cutter 2.1 and the blade of the cutter is polished.

The adapter 4.1 is provided with a conduit 5.2 for supplying coolant and lubricant. A conduit consisting of a conduit section 5.2 in the adapter 4.1 and a conduit section 5.3 in the polishing disc 4.2 is visible. Via this conduit, the solvent is supplied to the blade of the cutter 2.1 in a radially outward direction from a point radially inward.

[0015] A plurality of buckets 5.4 are provided to increase the pressure. These buckets are used to increase pressure. The bucket 5.4 can be formed like a pump bucket.

Therefore, the coolant and the lubricant travel in the following route. The coolant and the lubricant first reach the conduit section 5.2 via the conduit 5.1. In the transition from the conduit 5.1 to the conduit section 5.2, the centrifugal force causes an acceleration,
This increases the pressure.

The solvent is then guided in a direction substantially parallel to the axis in the conduit section 5.3 and proceeds towards the abrasive disc while being supported by the bucket 5.4.

The division of the device into the parts shown in FIGS. 2 and 3 is particularly advantageous for another reason. The fact that the so-called "pot" consists of the adapter 4.1 and the polishing disc 4.2 makes the operation very variable. In other words, the polishing disk 4.2 can be easily replaced when the polishing ring 4.3 is worn out or the operating conditions are changed due to some circumstances. The integration of the adapter 4.1 and the polishing disk 4.2 is very simple, for example using four screws. If any angle adjustments are made to the entire device to obtain a particular free angle, the angle adjustments will be made to the polishing disc 4.2.
It is not affected by the replacement.

It will be appreciated that the device according to the invention can be used not only for grinding cutters in cutting machines, but also for grinding other components such as wear plates of cutting machines.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a cutting machine provided with a cutter polishing device of the present invention.

FIG. 2 is a longitudinal sectional view of a main part of the cutter polishing apparatus of the present invention.

FIG. 3 is a cross-sectional view of a main part of the cutter polishing apparatus of the present invention.

FIG. 4 is a diagram showing a relative relationship between the cutter polishing apparatus of the present invention and a cutter box.

[Explanation of symbols]

 2.1 Cutter 4.3 Polishing ring 5.1 Conduit 5.2 Conduit 5.3 Conduit 5.4 Bucket-shaped member

Claims (5)

[Claims] 1. A device for polishing a cutter (2.1) or a wear plate of a cutting machine, said device having a substantially bowl shape, wherein said device is provided with a grinding ring (44) in an end region of said bowl. 4.3), the device comprising at least one conduit (5.1, 5.2, 5.3) for supplying coolant and lubricant; .2, 5.3) have a supply port for introducing the solvent and a solvent discharge port, and the solvent discharge port is provided directly toward the blade of the cutter, and the solvent is concentrated on the blade. A cutter polishing device for a cutting machine, characterized in that it is guided to a cutting machine. 2. The apparatus according to claim 1, wherein a supply port of the conduit is provided outside a center of the bowl. 3. The apparatus according to claim 1, wherein the supply port for the solvent is provided on a smaller radius than the discharge port. 4. A bucket-shaped member (5.4) is provided between the inlet and outlet of the conduit (5.1, 5.2, 5.3) for increasing the flow rate of the solvent. Apparatus according to any one of claims 1 to 3, characterized in that it is provided. 5. A polishing disk, wherein the pot forms the bottom of the pot and part of a circumferential wall and an adapter which forms the rest of the circumferential wall and has a polishing ring. 2. The method according to claim 1, further comprising: (4.2).
5. The apparatus according to any one of claims 1 to 4.