JPS6325077Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a device that prevents chips from entering and biting the lower sliding surface of a carriage of a lathe, and ensures that the chips are not biting. The purpose is to prevent

More specifically, the present invention has the following prerequisite structure:
For example, as shown in FIG. 1 or FIG. 9, at least two sets of vertical feed guide surfaces 2, 3 are arranged in parallel in the front and back on the bed 1 of the lathe, and each carriage 4, 5 are supported so as to be movable in the longitudinal feed guide, and the upper surfaces of the respective longitudinal feed guide surfaces 2 and 3 are respectively covered with respective chip prevention covers 6 and 14 which are extendable and retractable in the vertical feed direction. The present invention relates to a lathe of a type employing a structure in which a lathe is mounted on a bed 1 and respective carriages 4 and 5.

(Prior Art) Conventionally, as shown in FIGS. 9 and 10,
Two sets of front and rear longitudinal feed guide surfaces 2 and 3 were located on the same front downward slope.

(Problem to be solved by the invention) For this reason, chips that have slipped on the telescopic chip prevention cover 6 that covers the rear vertical feed guide surface 3 or the rear carriage 5 are removed from the cover. 6 or falls into the gap 7 between the front surface of the carriage 5 and the rear surface of the front carriage 4, accumulates on the continuous surface 8 of both vertical feed guide surfaces 2 and 3, and from there the slide of the front carriage 5 It gradually invades and bites under the moving lower surface 9, causing abnormal wear.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention has the following features, for example, as shown in FIGS. 1 to 3, 5, 6, 7, or 8. , front set vertical feed guide surface 2
is formed so as to be offset in a stepped manner below the rear set of vertical feed guide surfaces 3, so that both vertical feed guide surfaces 2, 3
A stepped surface 10 is formed in between, and a chip preventer 12 that covers the gap 11 between the stepped surface 10 and the rear side surface of the front carriage 4 is formed in a forward downward direction. It is characterized in that it is provided in the step surface 10 and is slidably abutted on the stepped surface 10.

(Function) Chips that have slid down on the chip prevention cover 6 on the rear vertical feed guide surface 3 or on the carriage 5 pass over the chip prevention tool 21 that is downwardly shaped in the front, and then It slides down from the top of the table 4 into the chip reservoir 13 at the front lower part of the bed 1.

That is, the rear side of the front carriage 4 and the stepped surface 10
Since the gap 11 between the two is completely closed by the chip preventer 12, chips are completely prevented from entering the sliding lower surface 9 of the front carriage 4 through the gap 11 and biting. I'm here.

(Example) Hereinafter, an example of the present invention will be described based on FIGS. 1 to 8.

In FIG. 1, reference numeral 1 designates a bed of a lathe, the upper surface of which is formed in a downwardly inclined shape, and two sets of vertical feed guide surfaces 2 and 3 are arranged in parallel in the front and rear on the upper surface. Each of the carriages 4 and 5 is supported on each of the longitudinal feed guide surfaces 2 and 3 so as to be guided and movable in the longitudinal feed direction.

The front set of vertical feed guide surfaces 2 are offset from the rear set of vertical feed guide surfaces in a step-like manner diagonally rearward and downward perpendicular to the front downward slope, and both guide surfaces 2, 3
A stepped surface 10 is formed in between.

Reference numeral 14 is a chip prevention cover that covers the front set of vertical feed guide surfaces 2, and reference numeral 6 is a chip prevention cover that covers the rear set of vertical feed guide surfaces 3. These chip prevention covers 6 and 14 have a structure that is telescopically telescopic in the vertical feeding direction, and each covers the bed 1.
and the sides of the carriages 4 and 5.

Reference numeral 12 indicates the front carriage 4 and the stepped surface 1.
This is a chip prevention tool that covers the gap 11 between the

FIG. 2 shows an embodiment in which the chip control tool 12 is provided on the front carriage 4, and FIG. 3 is a cross-sectional view taken along the line -2.

In the figure, a cross-feed guide surface 15 is provided on the upper surface of the front carriage 4 in a direction perpendicular to the longitudinal feed direction, and a cross-feed table 16 is supported on the guide surface 15 so as to be guided and movable in the cross-feed direction.

The chip preventer 12 is made of a telescopic steel plate that can be expanded and contracted in the traverse direction, and its front end is fixed to the traverse carriage 16 on the carriage 4, and the rear end is fixed to the lateral carriage 16 on the carriage 4.
is pushed backwards by the cylinder 18 that extends at
An elastically deformable contact member 19 made of polyurethane fixed to the rear edge is brought into contact with the stepped surface 10 so as to be slidable in the longitudinal direction.

In addition, as another embodiment of the present invention, the chip control tool 12 may be formed of a flexible bellows plate.

In addition, as shown in FIG. 5, the chip preventer 12 is made of elastically deformable polyurethane or a plate spring and is formed into a single unit that does not expand or contract, and is installed over the upper surface and both left and right side surfaces of the rear of the front carriage 4. In addition to fixing the
It may be modified so that it is brought into slidable contact with the stepped surface 10.

As further embodiments of the present invention, the bed structure may be modified as follows.

A The one shown in Fig. 6 has the vertical feed guide surface 2 of the front set vertically deviated vertically downward from the vertical feed guide surface 3 of the rear set, and the front carriage 4
The rear surface is vertical.

B In the case shown in Fig. 7, the rear set of vertical feed guide surfaces 3 are formed horizontally on the upper surface of the bed 1, and the front set of vertical feed guide surfaces 2 are formed horizontally on the front surface of the bed 1. The vertical feed guide surface 3 is deviated diagonally backward and downward from the front edge of the vertical feed guide surface 3.

In addition, in the case of a bed structure as shown in FIGS. 1, 6, and 7, the front carriage 4 is deviated rearward, making it difficult for the operator to approach the center of the main shaft. This improves workability such as cutting preparation and maintenance.

C The one shown in Fig. 8 has a rear set of vertical feed guide surfaces 3 horizontally formed on the top surface of the bed 1, and a front set of vertical feed guide surfaces 2 vertically formed on the front surface of the bed 1. It is something.

(Effects of the Invention) The present invention is constructed and operated as described above, and thus has the following effects.

That is, the rear side of the front carriage 4 and the stepped surface 10
Since the gap 11 between the , passing over the downward-sloping chip control tool 12,
This completely prevents the chips from sliding down from the top of the front carriage 4 to the front side of the bed 1 and entering and biting the sliding lower surface 9 of the front carriage 4 through the gap 11. Abnormal wear due to biting can be reliably prevented.

Moreover, the structure for this improvement is
0, and the chip control device 12 provided on the reciprocating table 4 is arranged so as to be brought into slidable contact with the surface 10. Therefore, it can be implemented easily and at low cost.

[Brief description of the drawings]

1 to 8 show an embodiment of the present invention, FIG. 1 is a side view of the lathe, FIG. 2 is an enlarged perspective view of the main part,
Fig. 3 is a sectional view taken along the - line in Fig. 2, Fig. 4 is a perspective view of the lathe, Fig. 5 is an enlarged view of main parts of another embodiment, Fig. 6
8 through 8 are side views of lathes of other embodiments having different bed structures. Figures 9 and 10
The figures show the prior art, with FIG. 9 being a side view of a lathe, and FIG. 10 being an enlarged view of its main parts. 1... Bed, 2... Front set of vertical feed guide surfaces, 3... Rear set of vertical feed guide surfaces, 4... Front carriage, 5... Rear carriage, 10... Parallel surface, 11... Gap, 12... Chip prevention tool.

Claims (1)

[Scope of utility model registration request] At least two sets of vertical feed guide surfaces 2, 3 are arranged in parallel in the front and back on the bed 1 of the lathe, and each vertical feed guide surface 2, 3
The carriages 4 and 5 are each supported so as to be movable in the vertical feeding direction, and the upper surfaces of the vertical feeding guide surfaces 2 and 3 are respectively covered with respective chip prevention covers 6 and 14 which are extendable and contractible in the vertical feeding direction. In a lathe in which powder prevention covers 6 and 14 are mounted on the bed 1 and each carriage 4 and 5, the vertical feed guide surface 2 of the front set is lower than the vertical feed guide surface 3 of the rear set. A stepped surface 1 is formed between both vertical feed guide surfaces 2 and 3 by being offset in a step-like manner.
0, and this stepped surface 10 and the front carriage 4
Chip control tool 12 that covers the gap 11 between the rear side and the
To prevent chips from being bitten on the lower sliding surface of a lathe's carriage, which is formed in a forward downward shape and provided on the front carriage 4, and is slidably in contact with a stepped surface 10. Device.