JP3230048U - Safety cover for drilling machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safety cover for a drilling machine in which the vertical slide range of the safety cover can be easily adjusted according to the length of a drill to be used. SOLUTION: A spindle head mounting member 12 to be attached to a lower portion of a spindle head of a drilling machine is provided, an inner cover 13 having an open back side is attached to the spindle head mounting member 12, and an elongated hole 17 extending in the vertical direction is provided on a side surface of the inner cover 13. The fixture 18 is slidably attached to the elongated hole 17, and the outer cover 14 having the back side open so as to be slidable up and down with respect to the inner cover 13 is attached to the outside of the inner cover 13. A long hole 19 extending in the vertical direction is formed at the position of the outer cover 14 corresponding to the long hole 17 formed in the inner cover when the outer cover 14 is placed on the inner cover, and the fixture 18 attached to the long hole 17 of the inner cover is It serves as a stopper for the outer cover 14, and a transparent window 15 is formed on the front side of the inner cover 13, and a transparent window 16 is formed on the front side of the outer cover 14. [Selection diagram] Fig. 3

Description

The present invention relates to a safety cover for a drilling machine that covers a rotating portion of the drilling machine.

As a chip scattering prevention device for a drilling machine that prevents the operator from being caught in the rotating part during drilling work by the drilling machine and preventing the scattering of the generated chips and the broken drill, Patent Document 1 describes that the chip can be detachably attached to the lower part of the spindle head. A drilling machine entrainment prevention device and a chip scattering prevention device in which an engaged fixed cover and a transparent movable cover slidably attached to the fixed cover are combined are described.
According to the drilling machine entrainment prevention and chip scattering prevention device, the movable cover can slide up and down freely in synchronization with the operation during cutting work, so that the movable cover can prevent the chips from scattering. ..

However, since it is not shown how to adjust the vertical sliding range of the movable cover, it is difficult to adjust to the optimum vertical sliding range when the length of the drill to be used is changed. Met.

Jikkai Sho 52-162588 Gazette

Therefore, an object of the present invention is to provide a safety cover for a drilling machine in which the vertical slide range of the safety cover can be easily adjusted according to the length of the drill to be used.

In order to solve the above problem, the safety cover for a drilling machine according to claim 1 is provided with a spindle head mounting member attached to the lower part of the spindle head of the drilling machine, and an inner cover with an open back side is attached to the spindle head mounting member. A long hole extending in the vertical direction is formed on the side surface of the cover, and a fixture is slidably attached to the long hole, and an outer cover whose back side is open so as to be slidable up and down with respect to the inner cover is attached to the outside of the inner cover. A long hole extending in the vertical direction is formed at the position of the outer cover corresponding to the long hole formed in the inner cover when the outer cover is placed on the inner cover, and the fixture attached to the long hole of the inner cover is the outer cover. It is characterized in that a transparent window is formed on the front side of the inner cover and a transparent window is formed on the front side of the outer cover.
According to the second aspect of the present invention, the inner cover is vertically swingably attached to the front portion of the spindle head attachment member.
The invention according to claim 3 is to attach a second outer cover to the outside of the outer cover so that the back side can be slid up and down with respect to the outer cover.

According to the invention according to claim 1, an elongated hole extending in the vertical direction is formed on the side surface of the inner cover, a fixture is slidably attached to the elongated hole, and the inner cover is moved up and down with respect to the inner cover. An outer cover with the back side open so that it can be slid is attached, and when the outer cover is placed on the inner cover, a long hole formed in the inner cover and a long hole extending in the vertical direction are formed at the position of the outer cover corresponding to the inner cover. Since the fixture attached to the long hole of No. 1 serves as a stopper for the outer cover, the vertical slide range of the safety cover can be easily adjusted according to the length of the drill.
According to the invention of claim 2, since the inner cover is mounted so as to be swingable up and down at the front portion of the spindle head mounting member, the mounting chuck portion of the drill is opened by swinging upward. Therefore, the drill can be easily replaced without removing the safety cover from the lower part of the spindle head.
According to the third aspect of the present invention, since the second outer cover whose back side is open so as to be slidable up and down with respect to the outer cover is attached to the outside of the outer cover, even if the length of the drill becomes longer. Can be accommodated.

It is a front view of the drilling machine provided with the safety cover for the drilling machine by this invention. It is a right side view of FIG. It is a perspective view of the safety cover for a drilling machine according to the Example of this invention. It is a front view of the main part explaining the 1st usage mode. It is a front view of the main part explaining the 2nd use mode. It is a right side view explaining the state when exchanging a drill. It is explanatory drawing of the main part which shows the other embodiment of this invention.

Hereinafter, examples of the present invention will be specifically described with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 is a base of a drilling machine, and a support 2 is erected on the base 1, and a spindle head 5 provided with a transmission mechanism 4 such as a motor 3 or a belt is provided at the upper end of the support 2. is there. A drill is attached to the chuck 7 at the lower end of the spindle 6. Reference numeral 8 is a table on which the work 9 is placed. The table 8 is attached to the support column 2 so as to be vertically movable.

As shown in FIG. 3, the drilling machine safety cover 10 according to the present invention is provided with a spindle head mounting member 12 attached to the lower part of the spindle head of the drilling machine, and the inner cover 13 is attached to the spindle head mounting member 12, and the inner cover is attached. An outer cover 14 is attached to the outside of the inner cover 13 so as to be slidable up and down with respect to the inner cover 13, and transparent windows 15 and 16 are formed on the front sides of the inner cover 13 and the outer cover 14, respectively. Both the inner cover 13 and the outer cover 14 are formed in a U-shaped cross section with the back side open.

An elongated hole 17 extending in the vertical direction is formed on the side surface of the inner cover 13, and a fixture 18 (bolt 18a, nut 18b) is slidably attached to the elongated hole 17. Further, an elongated hole 19 extending in the vertical direction is formed at the position of the outer cover 14 corresponding to the elongated hole 17 formed in the inner cover 13 when the outer cover 14 is superposed on the inner cover 13. The fixture 18 attached to the elongated hole 17 of the inner cover serves as a stopper for the outer cover 14.
The outer diameter of the knob portion (nut) 18b of the fixture is smaller than the width of the elongated hole 19 formed in the outer cover, and the knob portion 18b of the fixture is a guide for sliding up and down along the elongated hole 19 formed in the outer cover. To play the role of.

The fixture 18 attached to the inner cover 13 can be fixed at an arbitrary vertical position of the elongated hole 17 formed in the inner cover. As a result, the range in which the outer cover 14 can be slid up and down with respect to the inner cover 13 can be arbitrarily set. For example, if the position of the fixture 18 is the upper part of the elongated hole 17, the vertical sliding range of the outer cover 14 with respect to the inner cover 13 becomes smaller, and if the position of the fixture 18 is the lower part of the elongated hole 17, the outer cover 14 The vertical slide range with respect to the inner cover 13 of the above is increased. This slide range is appropriately set according to the length of the drill to be used, the depth of the hole to be drilled in the work 9, and the like.

Transparent windows 15 and 16 are formed on the front side of the inner cover 13 and the outer cover 14, respectively. More specifically, a window hole 15a is formed on the front side of the inner cover 13, and a transparent plate is attached to the back side of the window hole 15a to ensure visibility and scatter chips and the like. To prevent. Further, a window hole 16a is formed on the front side of the outer cover 14 as in the inner cover 13, and a transparent plate 16b is attached to the front side of the window hole 16a to ensure visibility and chips and the like. Prevents scattering. As described above, the transparent windows 15 and 16 formed in the inner cover 13 and the outer cover 14 in the present invention form the window holes 15a and 16a, and the transparent plates that close the window holes are attached to the window holes 15a and 16a. Say something.

The back side of the inner cover 13 and the outer cover 14 is open, and the inner cover 13 is swingably mounted up and down (in the direction of the arrow in FIG. 6) at the front portion of the spindle head mounting member 12 with the pin 20 as a fulcrum. As a result, as shown in FIG. 6, if the chuck portion 7 is swung upward (forward), the chuck portion 7 is opened. Therefore, the drill 21 can be replaced easily and quickly without removing the safety cover 10 from the lower portion 11 of the spindle head.

FIG. 7 is an explanatory view of a main part showing another embodiment of the present invention, in which a second outer cover 22 whose back side is open so as to be slidable up and down with respect to the outer cover 14 is attached to the outside of the outer cover 14. is there. As a result, the vertical lengths of the outer covers 14 and 22 as a whole are extended, so that even if the length of the drill is further increased, it can be dealt with.
FIG. 7A is a left side view showing a case where the drill 21 (21a) is attached to the chuck 7. FIG. 3B is a front view showing a case where the drill 21c is attached to the spindle 6 by taper fitting via a socket. FIG. 3C is a right side view showing a case where the drill 21d is directly tapered and fitted to the spindle 6 and attached. Reference numerals 23 and 24 are relief portions for preventing the fixture 18 from interfering with the slide when the covers 13, 14 and 22 are slid up and down.

Next, the usage of the drilling machine safety cover 10 according to the present invention will be described. The spindle head mounting member 12 is attached to the lower part 11 of the spindle head of the drilling machine via the fastener 25 (bolt). The fixture 18 is fixed to the elongated hole 17 of the inner cover 13 by determining the vertical position so that the vertical slide range of the outer cover 14 is optimized according to the length of the drill 21 to be used, the drilling depth of the work 9, and the like. ..
In the first usage mode shown in FIG. 4, as shown in FIG. 4A, the fixture 18 is provided at a position such that a slight gap is formed between the lower end portion of the outer cover 14 and the work 9. Fix it. Next, when the upper and lower handles 26 are operated to lower the spindle, the lower end of the outer cover 14 comes into contact with the upper surface of the work 9 (FIG. 3B). When the work 9 is further lowered, the drill 21 starts drilling in the work 9 and drills to a predetermined depth (FIG. (C)). During this period, the front side and the left and right side surfaces are covered with the inner and outer covers 13 and 14, so that work safety is ensured. Since the front side has transparent windows 15 and 16, it is possible to proceed with the processing work while visually recognizing it.

What is shown in FIG. 4 shows a case where the drill 21a is thin and short. In this case, the fixing position of the fixture 18 is a relatively upper portion of the inner cover 13. On the other hand, in the second usage mode shown in FIG. 5, the case where the drill 21d is thick and long is shown, and the fixing position of the fixture 18 is relatively lower than the inner cover 13. As described above, the vertical fixing position of the fixture 18 can be appropriately set according to the length of the drill 21 to be used, the amount of vertical slide of the outer cover 14, and the like.

When replacing the drill 21, as shown in FIG. 6, when the inner cover 13 (outer cover 14) is swung upward (forward) at the front portion of the spindle mounting member 12 and stopped in that state, the chuck 7 Is released. In this state, the chuck 7 is operated to replace the drill 21. Since it is not necessary to remove the entire safety cover 10, the replacement work can be performed quickly.

1 Base 2 Strut 3 Motor 4 Transmission mechanism 5 Spindle head 6 Spindle 7 Chuck 8 Table 9 Work 10 Drilling machine safety cover 11 Spindle head lower part 12 Spindle head mounting member 13 Inner cover 14 Outer cover 15 Window 15a Window hole 16 Window 16a Window hole 16b Transparent plate 17 Long hole 18 Fixture 18a Bolt 18b Nut (knob)
19 Long hole 20 pin 21,21a, 21b, 21c, 21d Drill 22 2nd outer cover 23, 24 Relief part 25 Fastener 26 Vertical handle

Claims (3)

A spindle head mounting member to be attached to the lower part of the spindle head of the drilling machine is provided, and an inner cover with an open back side is attached to the spindle head mounting member to form an elongated hole extending in the vertical direction on the side surface of the inner cover and to the elongated hole. A long hole formed in the inner cover when the fixture is slidably attached, the outer cover is slidably attached to the outer side of the inner cover and the back side is open, and the outer cover is placed on the inner cover. A long hole extending in the vertical direction is formed at the position of the outer cover corresponding to the above, and the fixture attached to the long hole of the inner cover acts as a stopper for the outer cover, forming a transparent window on the front side of the inner cover, and at the same time. A safety cover for drilling machines characterized by forming a transparent window on the front side of the outer cover. The safety cover for a drilling machine according to claim 1, wherein the inner cover is mounted so as to be swingable up and down at the front portion of the spindle head mounting member. The safety cover for a drilling machine according to claim 1 or 2, wherein a second outer cover having a back surface open so as to be slidable up and down with respect to the outer cover is attached to the outside of the outer cover.

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