JPS5811529Y2 - Rotating tool post fixing device for electric plane - Google Patents

Description

[Detailed description of the invention] This invention prevents the risk of injury to hands and fingers due to rotation of the rotary tool rest to which the cutting blade is attached when the cutting blade is attached, removed, or adjusted. This invention relates to a device for fixing a rotary tool rest to facilitate blade edge adjustment.

Conventionally, in this type of fixing device, a stopper with a retaining spring energized is engaged with a hole provided in the side surface of the plane frame and a hole provided in the side surface of the rotary tool post, thereby locking the rotary tool post. There are those that fix the rotary tool rest, and those that fix the rotary tool rest by engaging both ends of a linear fixture with the engagement holes provided in the bottom of the plane frame and the circumferential surface of the rotary tool rest. has been done.

However, in the case of the former, the stopper is pulled outward against the elasticity of the engagement spring, the pin provided on the stopper is engaged with the deep groove of the bushing provided on the frame, or the stopper is further moved outward. After removing the pin from the deep groove by pulling it, the stopper is rotated and the pin is engaged with the shallow groove, thereby engaging and disengaging the stopper from the hole in the rotary tool post, and the stopper is connected to and disengages from the hole in the rotary tool rest. Since the pin is located on the back side of the knob, it is difficult to check whether the pin is engaged in a deep groove or a shallow groove. It is dangerous to attach, remove, or adjust the cutting edge of the cutting blade until the rotary tool rest is secured, and it is difficult to see, so it is difficult to engage and disengage the pins in deep and shallow grooves. There is a problem that is difficult to fix.

Furthermore, in the latter case, the fixing tool is not integrated into the planer frame, so it is easy to lose it, and the fixing tool is attached to the retaining hole on the bottom of the frame and the engaging hole on the rotary tool rest. Since it is engaged so as to straddle the cutting blade, it is difficult to attach and remove the cutting blade.

Therefore, the present invention is an improved rotary tool post fixing device as a result of studies in view of the above-mentioned conventional difficulties, and has an extremely simple structure that allows the rotary tool post to be fixed reliably and without erroneous operation. The purpose of this invention is to enable easy fixation and release operations, and to allow the fixation and fixation release positions to be clearly confirmed.

The drawings showing the embodiments of the present invention will be described in detail below.
In FIG. 1, reference numeral 1 denotes a frame body having a cavity 2 having a circular cross section, and within the cavity 2, a rotary tool rest 3 is rotatably supported by a motor (not shown) as a driving source.

Reference numeral 4 denotes a knife holder 5 provided on the outer periphery of the rotary tool rest 3.
A cutting blade that is superimposed on the top and is adjustable and fixed with a fixing bolt 7 via a blade holder 6, and the above fixing bolt 7
It is possible to adjust the exposure amount of the cutting edge from the surface plate 8 by adjusting the exposure amount of the cutting edge 4 held by a cutting blade retaining spring (not shown) in the loosened state. It is similar to a plane.

The present invention is applied to the electric plane having the above structure, and as shown in FIGS. 2 to 4, a retaining hole 9 is provided at a desired position on the end face 3' of the rotary tool rest 3, The retaining hole 9
A through hole 10 is provided in the frame 1 to correspond to this, and a stopper 11 is supported so as to be movable forward and backward with a retaining spring 12 interposed therebetween.

That is, the through hole 10 has a small diameter portion 10' on the inside and a large diameter portion 10'' on the outside.

The stopper 11 is formed of a wire rod of a desired thickness into a generally inverted U-shape when viewed from the front, with one end 11' being short and the other end 11'' being long. The spring receiver 14 is fitted into the through hole 10, and an E-shaped retaining ring is fitted to the neck portion 13, leaving a desired length of the engaging portion 11'' at the tip.
The spring receiver 14 and the stopper 11 are fitted and fixed to the surface of the frame 1 so as to close the opening of the large diameter portion 10'', and the ends thereof are supported by a plate 15, respectively. The above-mentioned engagement spring 12 is installed inside the large-diameter portion 10'', and the spring 12
The stopper 1 is moved in the direction in which the elasticity of the stopper 1 is engaged with the engagement hole 9.
1 is activated.

Further, a stop hole 16 consisting of a deep hole and a stop release hole 17 consisting of a shallow hole are provided on the surface 1' of the frame 1 so as to correspond to one side end 11' of the stopper 11.
The openings are opened at an appropriate angle θ on the same circumference centered at 0, and one end 11' of the stopper 11 is removably engaged therewith.

That is, the stop hole 16 and the stop release hole 17 are
Engagement portion 11 '' at the other end 11'' of the stopper 11
is opened with a depth difference l' corresponding to the stroke l necessary for engaging and disengaging from the retaining hole 9, and when the - side end 11' is engaged with the stop release hole 17. ,
The stopper 11 is held in the raised position against the elastic force of the engagement spring 12, and the engagement portion 11'' at the other end 11''
is held in a state separated from the engagement hole 9, and the - side end 11
′ is engaged in the stop hole 16, the stopper 11 is pushed down by the elastic force of the engagement spring 12, and the engagement portion 1
1 '' is provided so that the rotary tool rest 3, which is fitted into the engagement hole 9, is fixed.

In the above-described embodiment, the stopper 11 is pulled up as shown in the figure against the elastic force of the engagement spring 12, and in this state, one end 11' is rotated about the other end 11'' as shown in the arrow in FIG. It rotates in the a'-a direction to engage and disengage from the stop hole 16 and the stop release hole 17. In the present invention, the stopper 11, the stop hole 16, and the stop release hole 17 are further arranged as follows. By forming
The rotation operation of the stopper 11, that is, the fixing and unfixing operations of the rotary tool rest 3 can be made easier.

In FIGS. 5 and 6, the stop hole 16 and the stop release hole 17 are formed in a groove 18 having a width equal to the diameter thereof.
The bottom wall surface of the concave groove 18 is formed into a mountain-shaped oblique surface 19.20 between the two holes 16.17, and the tip of one end 11' of the stopper 11 is formed into a spherical surface 21, an inclined surface, etc. to form.

When the stopper 11 is rotated in the direction of the stop release hole 17 from the position where the one side end 11' of the stopper 11 is engaged with the stop hole 16 shown by the solid line in the figure, the - side end 11' is rotated. The spherical surface 21 and the like at the tip of the stopper 11 abuts against the inclined surface 19, but as the inclined surface 19 and the spherical surface 21 slide, the stopper 11 is pushed up and rotated against the elastic force of the engagement spring 12. At the same time as the peak 22 of the chevron is crossed, the elastic force of the engagement spring 12 causes the other inclined surface 20 to
The stopper 11 rotates while being pushed down along the
It is introduced into the stop release hole 17 and engaged.

Also, when the stopper 11 is rotated in the opposite manner to the above, the - side end 11' can be introduced and fitted into the stop hole 16 from the stop release hole 17 in the same manner as described above.
Therefore, the stopper 11 can be rotated by simply applying rotational force without having to pull up the stopper 11 against the elastic force of the engagement spring 12, and the rotary tool rest 3 can be fixed and fixed. The release operation is performed.

Furthermore, if the engaging hole 9 is formed into a hole having an inclined surface such as an inverted conical shape, and the circumferential surface of the engaging portion 11 corresponding to the engaging hole 9 is formed into an inverted conical shape or the like corresponding to the inclined surface of the engaging hole 9, the engagement can be easily achieved. Hole 9 and engaging part 1
1 are in close contact with each other on their slopes, so the rotary tool rest 3 can be fixed without wobbling.

In this case, the engaging portion 11 and the engaging hole 9 are formed so as to engage with each other before the end portion of the one end side 11 of the stopper 11 reaches the bottom surface of the stop hole 16.

Further, it is preferable to display the functions of the stop hole 16 and the stop release hole 17 with letters, symbols, etc. around the stop hole 16 and the stop release hole 17.

As shown in FIG. 1, the engagement hole 3 is positioned so that the rotary tool rest 3 is fixed at a position where the cutting edge 4' of the cutting blade 4 is most protruding from the surface of the surface plate.

As explained above, according to the fixing device for a rotary tool post according to the present invention, the one end 11' of the stopper 11 is fitted into the stop hole 16 provided on the surface of the frame, so that the stopper 11 can be fixed to the engagement spring. 12 and the other side end 11
The engaging part 11 in " is engaged with the engaging hole 9 in the rotary tool rest 3 to fix the rotary tool rest 3, so the installation and removal of the cutting blade 4 and the adjustment of the amount of exposure of the cutting edge can be performed safely. Of course, especially in accordance with the present invention, the stopper hole 16 and the stop release hole 17 are provided in the surface of the frame body 1 in depth and shallowness so that the one side end 11 of the stopper 11 can be
Since the rotary tool rest 3 is engaged, it is possible to clearly confirm whether the rotary tool rest 3 is fixed or unfixed depending on the position of the hole 16 or 17 in which the negative end 11' is engaged.
When installing, removing, and adjusting the cutting blade, the rotary tool rest 3 can be prevented from losing its fixation, and these operations can be completed completely.Also, the stopper 11 can be rotated to stop one end 11'. Hole 16 or stop release hole 17
The rotary tool rest 3 can be easily fixed and released by simply engaging and disengaging it, and since both holes 16 and 17 are provided on the surface of the frame 1, there is no possibility of malfunction, and the structure is extremely simple. Since the number of parts is small, it can be manufactured at low cost, making it an extremely effective idea in practical terms.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional side view showing the main parts of an electric plane, and Figs. 2 to 4 show a first embodiment of the rotary tool post fixing device according to the present invention. A side view, FIG. 3 is a plan view thereof, FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3, and FIGS. 5 and 6 show a second embodiment of the present invention. FIG. 5 is a plan view thereof, and FIG. 6 is a longitudinal sectional side view thereof. 1...Frame, 3...Rotary turret, 3'
... End face of rotary tool post, 9 ... Engagement hole, 10 ... Through hole, 11 ... Stopper, 11' ...... Side edge of stopper, 11″...
...Other end of the stopper, 12...Engagement spring, 16...Stop hole, 17...Stop release hole.

Claims (1)

[Scope of utility model registration request] A through hole 10 corresponding to the retaining hole 9 formed in the end surface 3' of the rotary tool rest 3 is provided in the frame 1, and the through hole has a substantially inverted U shape in front.
The other end 11'', which is longer than the one end 11' of the stopper 11 formed in a letter shape, can be moved forward and backward, and the engagement spring 1
2, and a stop release hole 17 consisting of a shallow hole and a stop hole 16 consisting of a deep hole are provided on the surface of the frame body, respectively, so that one end of the stopper can be freely engaged and detached. A fixing device for a rotary tool rest of an electric plane, characterized in that the device is engaged.