JPH0441179A - magnetic dressing device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic dressing device that uses magnetism and is used to sharpen a grinding wheel.

[Conventional technology]

Conventionally, in order to reshape or sharpen a grinding wheel, which is a grinding tool, for the purpose of restoring grinding performance, for example, a dresser with diamonds embedded in the metal shank is pressed against the rotating grinding wheel. It is common to perform work.

[Problem to be solved by the invention]

However, in the dressing work using the conventional dresser mentioned above,
Since the hard dresser is mechanically pressed against the grindstone, there are disadvantages such as undesirable damage to the abrasive grains of the grindstone and non-uniform dressing.

In view of these points, it is an object of the present invention to abstract from the above-mentioned conventional dressing method, attempt to solve the problem from a completely different perspective, and provide a dressing device that can eliminate the above-mentioned conventional disadvantages. .

A magnetic dressing device is provided.

[Means to solve the problem]

In view of the fact that it has been difficult to sharpen safely, reliably, and easily in conventional dressing operations, the present invention uses a magnetic abrasive material using magnetic force generated at the end surfaces of two magnetic materials with a non-magnetic material sandwiched between them. By elastically adsorbing and holding the abrasive and pressing it against the grindstone, dressing can be performed without damaging the abrasive grains. Here, the magnetic abrasive material is abrasive grains that have the property of being attracted to a magnet, and is a material that has abrasive properties.

That is, according to the present invention, a first non-magnetic material is sandwiched between two magnetic materials, one of which is an N pole and the other is an S pole, and a second non-magnetic material is placed on both sides of the two magnetic materials. Paste the body and do the above 2
The magnetic abrasive material for dressing is attracted and held by the magnetic adsorption force at the end face portions of the first magnetic material and the first non-magnetic material, and the portion where the magnetic abrasive material is adsorbed and held is pressed against a grinding wheel. [Function] The first non-magnetic material is sandwiched between magnetic materials having different magnetisms, and the second non-magnetic material is pasted on both sides of the first non-magnetic material, so that the end face portion of the first non-magnetic material is stuck. generates a stable and strong magnetic attraction force.

When a magnetic abrasive material for dressing is attracted to this portion, it is held elastically. Therefore, when a grinding wheel to be dressed is pressed against this, a good dressing effect is obtained in which only the binder portion is removed without damaging the abrasive grains.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall perspective view of a first embodiment of a magnetic dressing device according to the present invention, FIGS. 2 and 3 are side views for explaining the effects of the dressing section of the first embodiment, and FIG.
The figure is a side view of a second embodiment of the magnetic dressing device according to the present invention, FIG. 5 is a side view for explaining the function and effect of the dressing section of the second embodiment, and FIG. FIG. 3 is a perspective view for explaining a dressing operation using the device.

First, to explain the first embodiment, referring to FIGS. 1 to 3, this device basically consists of two magnetic plates 1 and 2, one of which is an N pole and the other is an S pole. It has a structure in which a non-magnetic plate 3 of a certain thickness is sandwiched therein, and a processed part 6, in which other thin non-magnetic plates 4 are attached on both sides, is fixed to a sturdy base 8. This base 8 can be detachably fixed on a table such as a grinding machine.

As clearly shown in FIG. 2, the processed portion 6 is ejected from the end surface of one magnetic plate (N pole) 1 and travels in the air in a semicircular shape to the other magnetic plate (S pole) 2. It has a magnetic path of lines of magnetic force 10 that conducts to the end face. In this way, by arranging two different magnetic plates 1 and 2 in close parallel with each other with a non-magnetic material 3 in between, a regular magnetic path is formed at the ends, and the lines of magnetic force from each pole are not wasted in the air. becomes less likely to be dissipated. That is, an extremely strong magnetic attraction force exists at the end face portion of the processed portion 6. Therefore, when a predetermined amount of hard abrasive grains that are attracted to a magnet, that is, magnetic abrasive material 12, is adsorbed to that part, this magnetic abrasive material 12 is elastically held at a predetermined spatial position along the lines of magnetic force 10. (Figure 2). The non-magnetic plates 4 located on both sides of the processing section 6 are intended to concentrate the magnetic abrasive material 12 at the center of the end face so as to prevent it from bulging outward.

Hereinafter, the workpiece to be dressed will be described on the end face portion of the machining portion 6 that elastically holds the magnetic abrasive material 12 in this way (hereinafter referred to as the dressing portion 16 because this portion actually performs dressing of the tool). The effects of dressing work performed by rotating a tool such as a grinding wheel and pressing against it will be explained.

This magnetic abrasive material 12 elastically escapes from the hard abrasive grains (not shown) of the grinding wheel 18 (FIG. 3), so it does not damage the abrasive grains. A soft bonding agent portion (not shown) is acted upon for appropriate cutting. In other words, the magnetic abrasive material 120 elastically flows and removes only the binder portion following the shape of the grindstone, so that the tip position of the abrasive grain remains unchanged and the shape of the grindstone does not collapse.

Moreover, in the dressing operation of this embodiment, it is only necessary to simply press the dressing part 16 against the grinding wheel 18 from one side, which is excellent for the operation, and the pressing can be performed in various ways by changing the position. It has the advantage of being able to immediately adapt to grinding wheels of different sizes and shapes. For example, the dressing operation can be carried out in the same way for the grinding wheel 18' having a small diameter.

Furthermore, since the magnetic path of the magnetic lines of force 10 constituting the dressing portion 16 is short and does not pass through the workpiece tool (grinding wheel 18) or other mechanical systems, there is no negative influence or influence on them, and the grinding wheel 18 Dressing can be performed with or without magnetism.

Additionally, the same dressing device can be used for both metal and resin grindstones. Since the gap between the grinding wheel and the magnetic pole can be maintained at, for example, about 1 to 2 degrees, accurate position management is not required and it is suitable for automation of dressing.

Next, a second embodiment will be described. Parts (portions) that are the same as those in the first embodiment will be given the same reference numerals, common explanations will be omitted, and only characteristic parts will be explained.

Referring to FIGS. 4 to 6, in this embodiment, a non-magnetic flexible member, for example, a brush-like member 20 as shown in the drawings, is conveniently provided on both sides of the processed portion 6 of the first embodiment. It consists of an attached structure (Fig. 4). This brush-like member 20 is used for dressing the workpiece tool (grinding wheel 1
8), so that it can be located at a position where it roughly contacts. Therefore, the presence of this brush-like member 20 can reduce the possibility that the magnetic abrasive material 12 will be dragged by the surface of the workpiece tool 180 and fall off from the dressing portion 16. In addition, the elasticity of the brush-like member 200 increases the shape retention of the magnetic abrasive material 12, making it possible to keep the so-called dressing point (processing point) constant.
Dressing accuracy etc. is improved.

Then, due to the elasticity of the brush-like member 20, the magnetic polishing plate 1
Since a restoring force acts to push 2 back to its original position, the processing pressure increases.

In this embodiment, as shown in FIG.
A dressing part 16 is provided on the upper end face and the side end face of the processed part 6 in order to dress the bottom and side faces of the brush-like member 2, respectively.
0 is attached. This allows multifaceted dressing work to be performed.

Note that the flexible member is not limited to the brush-like member 20 as shown in the drawings, and those skilled in the art may come up with various other flexible members.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to safely, reliably, and easily apply dressing work without causing damage to the workpiece tool without the above-mentioned conventional inconveniences.

[Brief explanation of drawings]

FIG. 1 is an overall perspective view of a first embodiment of a magnetic dressing device according to the present invention, FIGS. 2 and 3 are side views for explaining the effects of the dressing section of the first embodiment, and FIG. The figure is a side view of the second embodiment of the magnetic dressing device according to the present invention, FIG. 5 is a side view for explaining the function and effect of the dressing section of the second embodiment, and FIG. It is a perspective view of the gauze explaining the dressing operation using the apparatus. 1.2...Magnetic plate, 3.4...Nonmagnetic plate,
12... Magnetic abrasive material, 16... Dressing part. Figure m Figure n Figure

Claims (1)

[Claims] 1. A first non-magnetic material is sandwiched between two magnetic materials, one of which is an N pole and the other is an S pole, and a second non-magnetic material is placed on both sides of the two magnetic materials. The magnetic abrasive material for dressing was adsorbed and held by the magnetic adsorption force at the end face portions of the two magnetic materials and the first non-magnetic material, and the magnetic abrasive material was adsorbed and held. A magnetic dressing device characterized by dressing a part by pressing it against a grinding wheel. 2. The magnetic dressing device according to claim 1, further comprising flexible members made of a non-magnetic material attached to both outer sides of the second non-magnetic material for preventing the magnetic abrasive material from falling off.