JPH0536611Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention provides an apparatus for cutting specimens for a microscope, and more specifically, a cutting table equipped with a holder for an object to be cut. In a cutting device that is slidably attached to a guide rail so as to be able to move near and far from the cutting tool, the cutting table and the guide rail may be damaged due to cutting dust from the object being cut, grindstone dust, etc. generated during cutting. The present invention relates to a sliding part protection structure for preventing sliding surfaces from being worn out.

[Conventional technology]

The sliding part protection structure for this type of cutting equipment is as follows:
As the cutting table slides, it comes into sliding contact with the flat surface of the guide rail, and the cutting powder, grindstone powder, etc. adhering to the flat surface of the guide rail are removed from the cutting table and the guide rail. Conventionally, there has been known a device equipped with an oil seal or a dust seal to prevent the oil from entering between the sliding surfaces of the bearing (I cannot provide any literature).

[Problem that the invention attempts to solve]

However, with the conventional protection structure, it is almost impossible to completely prevent cutting dust and grindstone dust from entering between the sliding surfaces of the table and the guide rail using the oil seal or dust seal. In other words, in this type of cutting device, since the cutting operation involves the use of cooling water, the cutting powder and grindstone powder not only scatter directly as powder and adhere to the guide rail, but also These substances are also mixed in the cooling water, and it is impossible to remove them all, and there is a high possibility that cutting powder and grindstone powder will enter between the sliding surfaces.

Once the cutting powder or grinding stone enters between the sliding surfaces, the entering cutting powder or grinding stone powder is strongly pressed against the sliding surface and becomes bitten, and remains between the sliding surfaces forever and polishes. As a result, abrasion of the sliding surface is accelerated, leading to premature failure of precision due to sliding play in the cutting table.

The purpose of the present invention is to prevent early wear of the sliding surface due to cutting powder, grindstone powder, etc.

[Means for solving problems]

The characteristic structure of the sliding part protection structure of the cutting device according to the present invention includes a cutting table that includes a holder part of the object to be cut and a supported part on which the holder part is mounted.
In the cutting device, the supported portion is slidably attached while being held on a guide rail so that the holder portion moves near and far with respect to the cutting tool,
The guide rail is formed into a bar shape with a circular cross-sectional shape, and the guide rail is slidably passed through a support part of a supported part of a cutting table, and is positioned within the supported part. An oil reservoir chamber is formed to accommodate lubricating oil so as to immerse the guide rail portion, and sealing materials are provided at both ends of the supported portion in the sliding direction to slidably contact the outer circumferential surface of the guide rail. At the point. The functions and effects thereof are as follows.

[Effect]

a The guide rail does not support the table by being placed on top of it, but rather by penetrating the supported part of the table, so an oil pool may be formed inside the supported part. , the guide rail can be used with it immersed in lubricating oil.

b. The guide rail is formed into a rod shape with a circular cross section,
Since the guide surface is cylindrical,
Compared to the case of using a conventional guide rail with a flat guide surface, even if cutting dust or grinding stone dust is scattered during cutting work, or mixed with cooling water and comes into contact with the guide rail, the arc surface will not be formed. It is easy to run down along the line. Moreover, since the guide surface having the circular arc surface is immersed in lubricating oil, an oil film is formed on the guide surface, making it difficult for the cooling liquid to remain on the guide surface.

c. A sealing material used as a means to prevent the lubricating oil in the oil reservoir of the supported part from leaking through between the sliding surfaces is brought into contact with the outer peripheral surface of the guide rail, and as the cutting table slides. Seal material that slides on the outer circumferential surface of the guide rail is attached to both ends of the supported part in the sliding direction, so cutting powder, grinding stone powder, etc. attached to the guide rail are prevented from flowing as the cutting table slides. This sealing material can also prevent the sliding surface from entering between the sliding surfaces of the supported part and the guide rail.

d Even if there is cutting powder or grindstone powder that is not removed by the sealant and is brought in while adhering to the guide rail, the oil sump will flow relative to the guide rail as the cutting table slides. The lubricating oil can wash away the cutting powder and grindstone powder from the guide rail surface, and prevent them from remaining on the guide rail surface.

[Effect of idea]

Therefore, due to the effects described in a. to d. above, the present invention can suppress as much as possible the entrapment of cutting powder, whetstone powder, etc. between the sliding surface of the guide rail outer circumferential surface and the table, and improve the cutting table. There is an advantage in that it is possible to obtain a sliding part protection structure for a cutting device that can prevent early wear between the guide rail and the guide rail and maintain good cutting accuracy over a long period of time.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

As shown in FIGS. 1 and 2, a cutting tool 2 with a cooling water supply device is attached to a base 1, and
Two guide rails 3 are attached in parallel to each other, and a cutting table 4 having a holder portion 4A for the object to be cut is mounted on the guide rails 3, and the holder portion 4A moves near and far with respect to the cutting tool 2. The cutting device is constructed by attaching the cutting table 4 so as to be slidable thereon and providing operating means for sliding the cutting table 4.

The guide rail 3, as shown in FIG.
It is made of a round bar and has a circular cross-sectional shape, and extends slidably through the supported portion 4B of the cutting table 4.

The supported part 4B of the cutting table 4 is a box-shaped part that has an oil reservoir chamber 5 therein for accommodating lubricating oil so as to immerse the guide rail portion located inside the supported part 4B. At both ends of the direction, there is provided a support portion 4b that is slidably fitted onto the guide rail 3, and an oil serving as a sealing material that is slidably in contact with the outer peripheral surface of the guide rail 3 near the support portion 4b. A seal 6 is attached to each. Further, an oil inlet 7 to the oil reservoir chamber 5 is formed on the upper surface of the table 4, a drain outlet 8 is formed at the lower side surface, and an oil inlet 7 for the oil reservoir chamber 5 is formed on the side surface. An indicator 9 is formed to indicate the oil level within.

The operating means includes a rack gear 10 mounted on the lower surface of the cutting table 4 in a position along the sliding direction, and a pinion gear 11 meshing with the rack gear 10 and a gear 12 meshing with the pinion gear 11 on the base 1. The gear 12 is supported by a handle 13 for rotating the gear 12.

According to the configuration of the above embodiment, cutting powder and grindstone powder hit the guide rail 3 along with cooling water during cutting, but since the guide rail 3 has a circular cross-sectional shape and a sloped upper surface, the cutting powder Cutting powder, grindstone powder, and cooling water are easily discharged from the upper surface thereof, and adhesion of cutting powder, grindstone powder, and cooling water to the guide rail 3 is suppressed. Even if cutting powder, grinding stone powder, and cooling water adhere to the guide rail 3, the presence of the oil seal 6 allows the cutting powder, grinding stone powder, and cooling water to be transferred to the cutting table 4 and the guide rail 3.
Intrusion between the sliding surfaces of the material and the material is suppressed as much as possible.
In addition, even if the cutting powder or grindstone powder is not removed by the oil seal 6 and enters the oil reservoir chamber 5 while remaining attached to the guide rail 3, the sliding of the cutting table 4 may be prevented. As the lubricating oil flows relative to the guide rail 3, the lubricating oil in the oil reservoir chamber 5 washes it off the surface of the guide rail 3, thereby preventing it from remaining permanently attached to the guide rail 3. Of course, the sliding surfaces are lubricated with the aforementioned lubricating oil.

[Another example]

Another embodiment of the present invention will be shown below.

[1] To configure the operating means, as shown in FIGS. 4 and 5, a nut member 14 is provided in a fixed position in the oil reservoir chamber 5 of the cutting table 4, and the nut member 14 is screwed into the nut member 14. By rotating the nut 14 in a fixed position, the nut 14, that is, the feed screw 15 that slides the cutting table 4, is brought into a state where it freely passes through the side wall of the supported part 4B at one end in the sliding direction. A handle 16 is attached to the outer end of the feed screw 15, and an oil seal 6 that slides on the outer peripheral surface of the feed screw 15 is attached to the side wall of the supported portion 4B at one end in the sliding direction. In this case, the threaded portion between the nut member 14 and the feed screw 15 is also lubricated by the lubricating oil.

[2] In the above embodiment, the guide rail 3 is made of a solid round bar and has a circular cross-sectional shape, but the guide rail 3 is made of a hollow round pipe. Also good.

[3] In the above embodiment, the number of guide rails 3 is two, but the number of guide rails 3 may be one or three or more.

Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

1 to 3 show embodiments of the present invention,
FIG. 1 is a plan view, FIG. 2 is a partially cutaway side view, FIG. 3 is a longitudinal sectional front view of the main part, and FIGS. 4 and 5 show another embodiment of the present invention. The figure is a partially cutaway side view, and FIG. 5 is a longitudinal sectional front view of the main part. 4A...Holder part, 4...Cutting table, 2
... Cutting device, 3 ... Guide rail, 4B ... Directed section, 5 ... Oil reservoir chamber, 6 ... Sealing material.

Claims (1)

[Claims for Utility Model Registration] Holder portion 4A of the object to be cut and its holder portion 4A
A cutting table 4 equipped with a supported part 4B mounted thereon is slid with the supported part 4B held on the guide rail 3 so that the holder part 4A moves toward and away from the cutting tool 2. In a cutting device that is freely attached, the guide rail 3 is formed into a bar shape with a circular cross-sectional shape, and this guide rail 3 is attached to a support portion 4b of a supported portion 4B of a cutting table 4.
is slidably penetrated into the supported part 4B,
An oil reservoir chamber 5 for accommodating lubricating oil is formed so as to immerse the guide rail portion located within the supported portion 4B. A protection structure for a sliding part of a cutting device, which is provided with a sealing material 6 that comes into slidable contact.