JPH0611944U - Machine tool chip discharge device - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the discharge efficiency and efficiency of chips,
An object of the present invention is to provide a chip discharging device having a scraping surface which is retracted from a wall surface of a U-shaped groove and inclined to a coil spring wire. In a chip discharging device 10 in which one end 8a of a coil spring 8 arranged in a U-shaped groove 2 is supported by a rotation driving unit M, and the chips C are discharged by the rotational force of this rotation driving unit,
A chip discharging device 10 for a machine tool, in which a scraping surface 8b of the coil spring wire 8 arranged on the U-shaped groove wall surface 2 on the chip discharging side is an inclined surface set back from the U-shaped groove wall surface. is there.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a chip discharging device installed in a machine tool, which improves the chip discharging efficiency of the curved portion of the bottom of the gutter groove.

[0002]

[Prior art and problems]

 Conventionally, a chip discharging device installed in a machine tool or the like rotates one end of a coil spring arranged in a U-shaped groove as seen in Jikken Sho 60-21159 "Chip discharging device in cutting machine tools". It is rotated by the drive unit and the chips are discharged by the coil spring wire having a scraping surface that stands upright from the wall surface of the U-shaped groove.

Since the above-mentioned chip discharging device has a scraping surface which is upright from the wall surface of the U-shaped groove in the coil spring wire, the chip discharging function is improved and improved as compared with the coil spring having the round wire cross section. Has been done. However, if there is a gap between the scraping surface that stands upright from the wall surface of the U-shaped groove and the groove bottom wall surface, a part of the cutting chips enters this gap and the gap further expands, which is a vicious circle. In other words, since the upright scraping surface of the coil spring wire has no scraping action of the chips, the self-weight of the stack of chips scraped on the scraping surface causes a part of the chips to grow in the gap. Eventually penetrates and eventually increases the rotational drive resistance of the coil spring wire.

[0004]

[Problems to be solved by the device]

 In view of the conventional problems described above, the present invention has a structure in which a coil spring wire has a scraping surface configured to recede and incline from a wall surface of a U-shaped groove in order to improve efficiency and efficiency of cutting powder. The purpose is to provide a device.

[0005]

[Means for Solving the Problems]

 The present invention is a chip discharging device in which one end of a coil spring arranged in a U-shaped groove is supported by a rotation driving unit, and chips are discharged by the rotational force of this rotation driving unit, which is arranged on the wall surface of the U-shaped groove. This is a chip discharging device for machine tools in which the scraping surface of the coil spring wire on the chip discharging side is configured as an inclined surface retracted from the wall surface of the U-shaped groove.

[0006]

[Action]

 In the present invention, the scraping surface of the coil spring wire is configured to be an inclined surface toward the motor side (anti-discharging side), and the chips accumulated at the bottom of the U-shaped groove wall surface are scooped on the inclined surface of the scraping surface. It acts as a chip discharging device that moves to the discharge side while being peeled.

[0007]

【Example】

 Hereinafter, an example shown in the drawings will be described. 1 is a side sectional view of a chip discharging device of a machine tool of the present invention, FIG. 2 is a front view of a discharge side, and FIG. 3 is an enlarged partial view showing a cross section of a coil spring wire of the present invention. FIG. 4 is a cross-sectional view showing each cross-sectional shape of the coil spring filament.

In FIG. 1, reference numeral 1 denotes a gutter having a U-shaped groove cross section, which is arranged at the back of a table of a machine tool or the like. A motor M of a rotary drive unit is attached to this one-sided board 3, and a boss 5 of a rotary shaft disk 4 is provided. One end 8a of the coil spring wire 8 is supported by and is arranged in the U-shaped groove. A chip discharging device 10 that discharges chips by the motor rotating force of the rotation driving unit is configured. A hopper 6 for receiving chips is provided on the chip discharge side. Further, as shown in FIG. 3, the upper side, that is, the inner diameter side of the scraping surface 8b on the chip discharge side of the coil spring wire 8 arranged in the U-shaped groove wall surface 2 is retracted from the U-shaped groove wall surface 2, that is, the motor side It is a chip discharge device 10 having a configuration of an inclined surface toward the discharge side). That is, the coil spring wire 8 in which the scraping surface 8b and the anti-scraping surface 8c are transformed into a parallelogram is adopted.

The coil spring filament 8 may have various shapes shown in FIG. FIG. 4A shows a triangular shape having a scraping surface 8b〃 and an anti-scraping surface 8c〃 which are formed in a mountain shape. FIG. 4B shows a coil spring filament 8 in which the scraping surface 8b and the anti-scraping surface 8c are transformed into a parallelogram. Further, FIG. 4C has a semicircular shape having a scraping surface 8b 'and an anti-scraping surface 8c', and the scraping surface 8b 'is configured as an inclined surface toward the motor side (anti-discharging side). It is formed in a mountain shape.

According to the chip discharging device 10 having the above-described structure, the scraping surface 8b of the coil spring wire 8 is configured to be an inclined surface toward the motor side (counter discharging side). The chips C accumulated at the bottom of the inside move to the discharge side while being picked up by the inclined surface of the scraping surface 8b. As a result, the chips C are minimally caught in the gap between the coil spring wire 8 and the bottom of the wall surface 2 of the U-shaped groove, so that the chips can be transported smoothly.

It is needless to say that the present invention is not limited to the above-mentioned one embodiment, and design changes can be made within the scope of the invention.

[0012]

【effect】

 The present invention is a chip discharging device in which one end of a coil spring arranged in a U-shaped groove is supported by a rotation driving unit, and chips are discharged by the rotational force of this rotation driving unit, which is arranged on the wall surface of the U-shaped groove. Since the scraping surface on the chip discharge side of the coil spring wire that is formed is an inclined surface that recedes from the wall surface of the U-shaped groove, the chips accumulated at the bottom of the wall surface of the U-shaped groove are inclined surfaces of the scraping surface. It moves to the discharge side while being scooped up. As a result, chips are minimally caught in the gap between the coil spring wire and the bottom of the wall surface of the U-shaped groove, and there is an effect that it is possible to provide a device for carrying chips smoothly.

[Brief description of drawings]

FIG. 1 is a side sectional view of a chip discharging device of a machine tool of the present invention.

FIG. 2 is a front view of the discharge side of the present invention.

FIG. 3 is an enlarged partial view showing a cross section of the coil spring filament of the present invention.

FIG. 4 is a sectional view showing each sectional shape of the coil spring filament of the present invention.

[Explanation of symbols]

 1 Gutter 2 Bottom surface of U-shaped groove wall M Motor of rotation drive unit 6 Hopper 8 Coil spring wire 8b, 8b ', 8b〃 Scraping surface 10 Chip discharging device

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] August 5, 1993

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Fig. 2]

[Figure 3]

[Figure 4]

Claims (1)

[Scope of utility model registration request] 1. A chip discharging device for supporting one end of a coil spring arranged in a U-shaped groove on a rotary drive unit and discharging chips by the rotational force of the rotary drive unit, wherein the coil spring is arranged on the wall surface of the U-shaped groove. A chip discharging device for a machine tool, in which the scraping surface of the coil spring wire on the chip discharging side is configured as an inclined surface set back from the wall surface of the U-shaped groove.