JPS6325076Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention belongs to the technical field of devices that prevent chips from entering the vertical feed guide surface of the bed of a lathe using a chip prevention cover. The purpose is to reliably prevent the entry of chips.

More specifically, the present invention is based on the prerequisite structure of the above-mentioned chip intrusion prevention device, as shown in FIG. 1 or FIG. 3 are arranged in parallel in the front and back, each carriage 4, 5 is supported on each vertical feed guide surface 2, 3 so as to be movable in the vertical feed guide, and the upper surface of each vertical feed guide surface 2, 3 is expanded and contracted in the longitudinal feed direction. The present invention relates to a structure in which each chip prevention cover 6, 7 is freely covered, and each chip prevention cover 6, 7 is mounted on a bed 1 and each carriage 4, 5.

(Prior Art) Conventionally, as shown in FIGS. 8 and 9, both the front and rear sets of vertical feed guide surfaces 2 and 3 are located on the same slope, and the rear chip prevention cover 7 is The folded-down front wall part 8 of the front chip prevention cover 6 and the folded-down rear wall part 9 of the front chip prevention cover 6 are slidably abutted on the planar continuous surface part 10 of both vertical feed guide surfaces 2 and 3. There is.

(Problem to be solved by the invention) For this reason, the chips that have slid down on the rear chip prevention cover 7 are transferred to the folded-down front wall 8 and the front chip prevention cover 6 facing it. The continuous surface portion 1 is folded down from the gap 11 between the rear wall portion 9
0 and enters onto each vertical feed guide surface 2, 3 as each chip prevention cover 6, 7 slides, causing abnormal wear of the vertical feed guide surfaces 2, 3.

(Means for Solving the Problems) In order to solve the above-mentioned drawbacks, the present invention has been proposed, for example, as shown in FIGS. 1 and 2, FIG. 4, FIG. 5, FIG. 6, or FIG. , front set vertical feed guide surface 2
is formed by being offset in a step-like manner below the rear set of vertical feed guide surfaces 3, and a stepped surface 12 is formed between both vertical feed guide surfaces 2 and 3, and this stepped surface 12 The rear edge 13 of the front set of chip prevention covers 6 is slidably abutted in the vertical feeding direction via a chip intrusion prevention device, and the front side The rear edges 13 of the chip prevention covers 6 of the set are slidably abutted in the longitudinal feeding direction, and the front set of chip prevention covers 6 are moved in the forward downward slope direction and in the vertical direction where the rear edges 13 are in the upper position. It is characterized by being arranged facing either one of the two.

(Function) The chips that have slid down on the rear chip prevention cover 7 fall onto the front chip prevention cover 6 from its front edge, and flow along the front downward or straight downward upper surface of this cover 6. It slides down. As a result, chips do not accumulate between the two covers 6 and 7, and the chip intrusion prevention tool cuts between the abutting portions of the rear edge 13 and the stepped surface 12 of the front chip prevention cover 6. Since no powder intrusion gap is created and the intrusion of chips can be prevented, biting on each of the vertical feed guide surfaces 2 and 3 is reliably prevented.

(Example) Hereinafter, an example of the present invention will be described based on FIGS. 1 to 7.

In FIG. 1, reference numeral 1 designates the bed of the 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 pair of longitudinal feed guide surfaces 2 are offset in a step-down manner obliquely downward and rearwardly perpendicular to the front downward inclined surface of the front pair of longitudinal feed guide surfaces 3,
A stepped surface 12 is formed between the three.

Reference numeral 6 denotes a chip prevention cover (hereinafter referred to as the front cover) that covers the vertical feed guide surface 2 of the front set;
Reference numeral 7 designates a chip prevention cover (hereinafter referred to as a rear cover) that covers the rear set of vertical feed guide surfaces 3. These covers 6 and 7 are so-called telescopic covers, and have a structure that can be expanded and contracted in the vertical feeding direction, and both ends of each cover are attached to the ends of the bed 1 and the sides of the carriages 4 and 5. has been done.

FIG. 2 is an enlarged perspective view of the main part of the front cover, showing that the rear edge 13 of the front cover 6 is slidable on the flat stepped surface 12 via a groove rail (chip intrusion prevention tool) 14. By abutting against each other, no chip intrusion gap is created between the stepped surface 12 and the front cover 6. The groove rail 14 is fixed to the stepped surface 12, and the rear edge 13 of the front cover 6 is attached to the rail groove 15.
is slidably inserted.

Since cutting chips generate scorching heat, both covers 6 and 7 and the groove rail 14 are made of a heat-resistant material, such as steel, but the rail groove 15 is pasted with a phenolic resin-based plastic material to improve sliding properties. may be improved.

For chips that are sufficiently cooled by cutting oil, the above-mentioned heat resistance is not required, so the materials for the covers 6, 7 and the groove rail 14 can be appropriately selected. Powder control covers, groove rails made of phenolic resin plastic, etc. can also be used.

In FIG. 4, a lip strip (chip intrusion prevention tool) 16 is fixed to the rear edge 13 of the front cover 6 instead of the groove rail 14 in FIG. 2, and is slidable on the flat stepped surface 12. It shows the one that is in elastic contact with the As the lip strip 16, a phenolic resin plastic material or a spring plate is used.

As another embodiment of the present invention, the bed 1
It is possible to change the structure of as shown in the following terms.

A The one shown in Fig. 5 has the vertical feed guide surface 2 of the front set deviated from the vertical feed guide surface 3 of the rear set in a vertically downward stepped manner, and the rear surface of the front carriage 4 is 17 is formed vertically.

B The one shown in Fig. 6 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. , front set vertical feed guide surface 2
is deviated diagonally backward and downward from the front edge of the longitudinal feed guide surface 3 of the rear set.

If the bed structure is as shown in Fig. 1, Fig. 5, or Fig. 6, the front carriage 4 is deviated rearward, so that the operator can move closer to the center of the main shaft. Since it can be removed easily, work efficiency such as cutting preparation and maintenance is improved.

C The one shown in Fig. 7 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) Since the present invention is configured and operates as described above, chips are not accumulated between the covers 6 and 7, and the rear edge 13 of the front cover 6 and the stepped surface 12 are Since the intrusion is prevented by the chip intrusion prevention tool between the abutting portions, it is possible to reliably prevent the vertical feed guide surfaces 2 and 3 from being abnormally worn due to the intrusion of chips.

Moreover, the structure for this improvement is
2 and abutting the rear edge 13 of the front chip prevention cover 6 thereon via the chip intrusion prevention device, so it can be implemented easily and at low cost.

[Brief explanation of the drawing]

1 to 7 show embodiments of the present invention,
Figure 1 is a side view of the lathe, Figure 2 is a perspective view of the main parts, Figure 3 is a perspective view of the lathe, Figure 4 is an enlarged view of the main parts showing an alternative structure to Figure 2, Figures 5 and 6. 7 and 7 are side views of lathes with different bed structures, respectively. 8 to 9 illustrate the prior art;
The figure is a side view, and FIG. 9 is an enlarged view of the main parts. 1... Bed, 2... Vertical feed guide surface of the front set, 3... Vertical feed guide surface of the rear set, 4... Front carriage, 5... Rear carriage, 6... Front carriage Group of chip prevention covers, 7... Rear set of chip prevention covers, 12... Recessed surface, 13... Rear edge of chip prevention cover 6.

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 7 which are extendable and contractible in the vertical feeding direction. Place powder control covers 6 and 7 on bed 1
In a device for preventing chips from entering into a vertical feed guide surface of a bed of a lathe, which is mounted on each carriage 4 and 5,
The vertical feed guide surfaces 2 of the front set are offset in a step-like manner below the vertical feed guide surfaces 3 of the rear set, and a stepped surface is created between both the vertical feed guide surfaces 2 and 3. 12, and the rear edge 13 of the front set of chip prevention covers 6 is slidably abutted against this stepped surface 12 via a chip intrusion prevention device in the vertical feeding direction, and the front set of chips is The powder control cover 6 is tilted in the forward downward direction and the rear edge 13
A device for preventing chips from entering into a vertical feed guide surface of a bed of a lathe, characterized in that the device is disposed facing either the vertical direction or the vertical direction where the device is located at the upper side.