JPH01140943A - Groove structure for recovering chip and machining liquid from machine tool - Google Patents

Abstract

PURPOSE:To enable machining liquid to flow smoothly through a recovering groove so as to hold a normal recovering function by forming a chip slide member having a frictional resistance to the stream of chips, which gradually decreases, in the recovering groove. CONSTITUTION:A sheet-metal-worked member 26 having a U-like cross-sectioned shape and having a width spanning the full groove-width of a recovering groove 24, is fitted in the groove 24 in such a way that the bottom wall of the member 26 is set to be upside, and accordingly, the member 26 has a smooth surface since it is made of sheet-metal, when it is compared with a cast article which has a rough surface. Further, the member 26 is coated with an urethane material so as to have a smoother surface, and accordingly, chips may easily slide on the member 26. This member 26 is formed extending over the overall width of the recovering groove 24. Since the groove 24 has cast lateral walls 30 so as to have slight concave and convex parts therein which define gaps that allows the machining liquid alone to pass therethrough, between the member 26 and the lateral walls 30. Accordingly, even though chips would remain on the upper surface 27 of the bottom wall of the member 26, which is smooth, the machining liquid itself flows into the lower side of the member 26 and then flows a lower layer passage which is defined between the member 26 and the bottom surface 28 of the groove 24, thereby it is possible to prevent the machining liquid from overflowing from the recovering groove 24.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to the structure of a collection groove that collects chips and cutting fluid generated during workpiece machining in a machine tool.

[Conventional technology and problems]

When machining a workpiece with a machine tool while supplying cutting fluid, the used cutting fluid is recovered by passing it along with the chips generated during the machining through a collection groove provided in the bed, into a cutting machine installed close to the bed. This is done by flowing into a liquid tank.

Although this recovery groove has an inclination angle, it is often not possible to obtain a very large inclination angle due to limitations such as the height of the cutting fluid tank and the dimensions of the bed. For example, it is about 3 degrees.

Furthermore, since the bed is made of cast metal, the groove surface (groove surface) of the collection groove is rough and chips tend to stay there. In fact, problems have occurred in which chips accumulate in the collection groove, preventing the cutting fluid from flowing and overflowing from the collection groove.

Therefore, in order to solve these problems, the present invention aims to provide a recovery groove structure that allows cutting fluid to smoothly flow through the recovery groove and maintain the recovery function normally.

[Means for solving problems]

In view of the above object, the present invention provides a machine tool which is provided in a bed for collecting chips and cutting fluid collected from a drilling area into a cutting fluid tank installed close to the bed. To provide a collection groove structure for collecting chips and cutting fluid for a machine tool, characterized in that the collection groove is provided with a chip sliding member that reduces frictional resistance to the flow of the chips. .

[For production]

Since the chips easily slide on the chip sliding member, the chips are less likely to stay in the middle of the collection groove, and therefore the cutting fluid can be successfully collected.

〔Example〕

The present invention will be described in more detail below based on embodiments shown in the accompanying drawings. Fig. 1 is a partial cross-sectional side view of a machine tool having a collection groove according to the present invention, and Fig. 2 is an arrow line shown in Fig. 1.
FIG.

The machine tool has a column 32 erected on a bed 10 made of cast metal, and a spindle head 3 having a spindle 36 on the front surface of the column 32.
4 is attached so that it can move up and down. On the other hand, bed 1
0 and in front of the column 32, guides 12 for slidingly guiding the saddle 14 in the front-rear direction Y are provided on the left and right. A work table 16 is placed on the saddle 14 so as to be slidable in the left-right direction X.

A work W is mounted and fixed on the work table 16, and a tool 38 is attached to the main shaft 36 to process the work W. Cutting fluid is supplied during this machining, but the bed 10
A cutting fluid tank 42 is disposed close to the rear of the cutting fluid tank 42, and the cutting fluid in the cutting fluid tank 42 is supplied by a pump 44 through a pipe 46 to a nozzle 48 to the processing section. Various measures have been taken to successfully collect the chips and cutting fluid from this machining and to prevent the chips and cutting fluid from being unnecessarily scattered around.

One is the front area of the column 32 with a splash guard 40.
is surrounded by. Further, a sliding mechanism for sliding the work table 16 in the left-right direction X is covered by a telescopic cover 18. Furthermore, of the sliding mechanism for sliding the saddle 14 in the longitudinal direction Y, the front side of the saddle 14 is covered by a telescopic cover 19, and the rear side is covered by a slide cover 20 to block the intrusion of chips and cutting fluid. In addition, a groove (not shown) is provided around the work table 16 to catch chips and cutting fluid that fall from the machining section of the work W.
The structure is such that the cutting fluid is collected and dropped into a cutting fluid guide 22 provided in the left-right direction X on the lower saddle 14. The bottom surface of this cutting calculation guide 22 is inclined to the left or right, and can be flowed into a collection groove 24 for chips and cutting fluid provided at an angle in the front-rear direction Y of the bed 10.

The recovery groove 24 is inclined from the front upper surface of the bed 10 to the upper surface of the cutting fluid tank 42 disposed at the rear of the bed 10. This angle of inclination cannot be set too large due to the limitations of the dimensions of the bed 10 and the height of the cutting fluid tank 42. Therefore, if chips or cutting fluid are directly flowed to the bottom 28 of the casting surface of the recovery groove, which is the casting surface, a problem will occur in that they will stagnate. Therefore, in the present invention, as shown in FIG.
A sheet metal member 26 having a U-shaped cross section and having a member width that completely spans the groove width of the collection groove 24 is placed in the collection groove 24 with the bottom wall facing upward.
It is pushed inside. Since this member 26 is made of a sheet metal material, it has a smooth surface unlike a cast member. More preferably, this member 26 is coated with urethane to make it even smoother, making it easier for chips to slide on the member 26. This U-shaped member 26 is configured to have the full groove width of the recovery groove 24, but the groove side surface 30 is a cast surface and has small irregularities, and cutting fluid is removed between the groove side surface 30 and the side surface of the U-shaped cross-sectional member 26. There is a gap where only the item can fall. Therefore, even if chips start to accumulate on the bottom wall upper surface 27 of the U-shaped cross-sectional member 26, which has a smooth surface, the cutting fluid itself flows into the lower side of the U-shaped cross-sectional member 26, and the cutting fluid itself flows into the lower side of the U-shaped cross-sectional member 26. 26 and the bottom surface 28 of the collection groove 24 flow in a lower flow path defined by the bottom surface 28 of the collection groove 24. In this way, cutting fluid can be prevented from overflowing from the recovery groove 24.

Unlike the above, even if a simple sheet metal plate is placed and fixed on the bottom surface 28 of the collection groove 24 instead of a U-shaped cross section to improve the sliding of chips, it may not be sufficiently effective depending on the usage conditions. You can expect it.

The chips and cutting fluid collected in this way pass through the filter member 50 on the top surface of the cutting fluid tank 42, leaving the chips above and collecting the cutting fluid into the tank below. It has become.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, it is possible to smoothly collect chips and cutting fluid generated by machining a workpiece, and it is also possible to prevent the cutting fluid from overflowing even in the unlikely event of an accident. In addition, since all cutting fluid can be recovered,
There is no need to store excess cutting fluid in the tank, and the size of the tank can be set to a minimum, so floor space can be used effectively.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional side view of a machine tool having a collection groove according to the present invention, and FIG. 2 is an enlarged sectional view taken along the arrow line n--■ in FIG. 10...Bed, 14...Saddle, 16
...Work table, 18, 19...Telescopic pink cover, 20...
Slide cover, 22... Cutting fluid guide, 24... Collection groove, 26...
... U-shaped cross-sectional sheet metal member, 27... Upper surface of bottom wall of member 26, 28... Cast surface bottom of recovery groove, 30... Cast surface side surface of recovery groove, 40... Splash guard, 42 ...Cutting fluid tank, W...Workpiece.

Claims (1)

[Claims] 1. In a machine tool, a collection groove provided in a bed for collecting chips and cutting fluid collected from a workpiece processing area into a cutting fluid tank installed close to the bed. A collection groove structure for collecting chips and cutting fluid for a machine tool, characterized in that the collecting groove is provided with a chip sliding member that reduces the frictional resistance of the flow of the chips. 2. The chip sliding member has a U-shaped cross section with a width that is equal to the entire groove width of the collection groove, and the chip sliding member has a U-shaped cross section with a width that is equal to the entire groove width of the collection groove, and the groove is formed by the recess formed by the U-shaped cross section and the bottom surface of the collection groove. The chip and cutting fluid recovery groove structure for a machine tool according to claim 1, wherein the chip sliding member has a cross-sectional shape and has a lower flow passage separated from an upper flow passage. 3. The chip and cutting fluid recovery groove structure for a machine tool according to claim 2, wherein the U-shaped cross-sectional chip sliding member is made of a sheet metal material. 4. The chip and cutting fluid recovery groove structure for a machine tool according to claim 1, wherein the chip sliding member is made of a sheet metal plate provided on the bottom surface of the collection groove.