JP3188945B2 - Large insertion router and method for setting the cut depth in the large insertion router - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a large-sized router for cutting a two-step groove in a work by using two types of bits which can be individually moved up and down, and a method of forming each bit by using the large- sized router . And a method of setting a cutting amount for a work.

[0002]

2. Description of the Related Art A large insertion router is provided with two spindles each having a cutting tool such as a straight bit and an allibit attached to a lower end thereof, which are pivotally supported by a sleeve and provided in a housing. By operating the vertical movement, the spindle together with the sleeve can be vertically moved together. In this large insertion router, the cutting depth of each bit is measured by measuring a predetermined dimension from the upper surface of the work and visually lowering each bit along the corner line, or described in Japanese Utility Model Publication No. 61-27686. As described above, below the left and right levers, a lowered lever comes into contact and a bolt serving as a stopper at the lower limit position is provided, so that the cutting amount is set and cutting is performed.

[0003]

The setting of the cutting amount of the bit affects the accuracy between the measured flat groove and the dovetail groove if the accuracy of the upper surface is not accurate with respect to the upper surface of the work. As a result, the actual depth of cut will be inconsistent. In the case where the lever is provided with a stopper, the accuracy is improved as compared with the former, but the operability and workability are reduced due to the trouble of separately adjusting each bit.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a large-size router which can set the cutting amount of both bits with a simple operation.
And a method of setting the cutting depth .
Any sleeve that can slide in the vertical movement direction of the sleeve
While providing a slide member that can be fixed at the ride position,
Both sleeves can come in contact with the slide member when descending
, And at least one of them
The mounting position of the topper with respect to the sleeve is
It can be changed by the vertical movement direction of the sleeve.
Things. Next, the invention of the cutting depth setting method
Lower both sleeves using the insertion router described in claim 1.
When the stoppers are lowered, the stoppers
At the lower limit position where it contacts the ride member,
One stopper so that a predetermined height difference
After changing the mounting position of the
Remove one of the sleeves with the ride member
Lower at a fixed depth of cut and lower by contact of the stopper.
Fixing the lowered slide member at its lowered position
The two sleeves obtained via the slide member
Always set the predetermined height difference between the lower limit positions of the bits
It is characterized by being made possible. Especially both three
When setting a predetermined height difference between
Set the number of adjustment gauges below the router body,
Set the bits of both sleeves to different steps of the adjustment gauge
Can be brought into contact with.

[0005]

[Function] First, when both sleeves are lowered,
Both sleeves at the lower limit position where the upper comes into contact with the slide member
So that a predetermined height difference occurs between the bits
After changing the position of the upper
If one of the sleeves is lowered by a predetermined cutting amount in a state where the fixing of the guide member is released, the slide member is also lowered in conjunction therewith, so the slide member is fixed at the lowered position.
You. Next, when the other sleeve is lowered until it is locked to the slide member, the other sleeve is always kept at a predetermined height difference via the slide member with respect to the previously lowered sleeve.
The lower limit position of the probe will be determined. Also both sleeves
If the adjustment gauge is used when setting a predetermined height difference therebetween , the setting can be easily performed, and the workability is further improved.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory front view of a large-sized router. Reference numeral 1 denotes a router main body which is set above a support base (not shown) so as to be horizontally movable in all directions, and a housing 2 on which a cover 3 is worn. A motor (not shown) is disposed at the center rear portion of the motor, and its driving force is transmitted via a belt 4 to driven pulleys 6 and 6 of rotating mechanisms 5 and 5 of the bits which are provided forward. As shown in FIGS. 2A and 2B, each of the rotation mechanisms 5 has a key 7 that fits into a key groove formed in the driven pulley 6, and rotates integrally with the driven pulley 6 and vertically. A spindle 8 slidably provided and a sleeve 10 rotatably supporting the spindle 8 by ball bearings 9, 9 are provided.
Are connected by connecting bolts 12, 12 to the substantially middle portions of the elevating levers 11, 11, which are pivotally mounted on both sides of the housing 2, respectively. Therefore, the vertical movement of the raising / lowering lever 11 causes the sleeve 10 and the spindle 8 to move up and down integrally, so that the straight bit 13 and the dovetail bit 14 respectively attached to the lower end of the spindle 8 can be raised and lowered independently. Further, in front of the left sleeve 10 in FIG. 1, an inverted L-shaped stopper 15 whose tip is bent at a right angle toward the center between the two sleeves is screwed by a bolt 16, and FIG. As shown in A), the protrusion 17 protruding from the lower end of the stopper 15 is fitted into the through hole 10a of the sleeve 10 to prevent the stopper 15 from rattling. On the other hand, an inverted L-shaped stopper 18 is also screwed in front of the right sleeve 10, but the bolt 19 here passes through the cup washer 20 and the elongated hole 21 below the stopper 18 to the sleeve 10. It is screwed and has a long hole 21
The projection 22 protruding upward from the sleeve 10 is also fitted into the elongated hole 23 provided on the sleeve 10 side. Therefore, when the bolt 19 is loosened, the stopper 18 can be moved up and down as a correction range described later. It is pulled.

In a space 25 between the left and right stoppers 15 and 18, a rectangular rod 26 is vertically provided, as shown in FIG. 3, in which a guide stopper 27 as a slide member is freely slidable up and down. I have. The guide stopper 27 is capable of pressing the rectangular rod 26 by screwing a pressing bolt 28 screwed horizontally from a front protruding portion 27a guided by a slit 2b provided in the front cover 2a. The guide stopper 27 can be locked and released at an arbitrary position of the rectangular rod 26 by rotating the fixed lever 29 fitted to the portion.
In this case, the clockwise rotation in FIG.
In particular, at the time of release, the projection 29a of the fixed lever 29 and the pin 30 projecting from the front projection 27a are locked, and the rotation of the pressing bolt 28 is restricted. Further, a compression spring 31 is wound around the square rod 26, and when the lock is not locked by the fixed lever 29, the guide stopper 27 is always set to the position shown in FIG.
To the uppermost position. Reference numeral 32 denotes a lock screw which has a pressing body 33 which comes into contact with the outer surfaces of the left and right sleeves 10 and 10 and which presses and fixes the two sleeves 10 and 10 at a time via the pressing body 33 by a rotating operation. .

In the large insertion router configured as described above, first, the difference (height difference) between the cutting amounts of both bits is set. In this case, it is convenient to use the adjustment gauge 34 as shown in FIG. . The adjustment gauge 34 is a block body in which a plurality of horizontal planes are formed in a step-like manner, and a magnet is embedded therein in consideration of stability when set on a support table. In addition, the horizontal plane has a top surface as a reference surface A, 24.2 mm for B side
The (C) plane is formed with a difference of 27.3 mm (9 minutes), and the D plane is formed with a difference of 30.3 mm (one dimension).
This is set below the router body 1 and the fixing lever 29
Is released, the guide stopper 27 is set in a free state, and the straight bit 13 is first lowered by operating the left lifting lever 11 until the straight bit 13 comes into contact with the reference plane A. At the same time, since the stopper 15 that has been lowered contacts the guide stopper 27 and pushes it down, the fixing lever 29 is operated at this position to lock the guide stopper 27 (FIG. 4A). Next, return the straight bit 13 upward, and adjust the adjustment gauge 34 this time with the
4 so that the bolt 19 of the stopper 18 on the dovetail 14 side is loosened.
4 is lowered. Even if the stopper 18 pulled downward by the tension spring 24 contacts the guide stopper 27 before the dovetail 14 contacts the adjustment gauge 34 (FIG. 4B), the correction range by the slots 21 and 23 is limited by the stopper 18. Because it is possible to move
4 can be lowered until it comes into contact with the surface D (at this time, the bolt 19 moves from below the long hole 21 as shown in FIG. 4C, and the projection 22 shown in FIG. And the distance between the stopper 18 and the dovetail 14 is increased.) Therefore, when the bolt 19 is tightened at the position where the straight bit 13 comes into contact with the surface D, the dovetail bit 14 becomes straight with the straight bits 13 and 3 based on the position of the guide stopper 27 obtained from the straight bit 13 which is first lowered.
A height difference of 0.3 mm (one dimension) will be set.

In the large insertion router having the height difference set as described above, when both bits before the operation are stored in the upper part, as shown by a two-dot chain line in FIG.
Distance of the distance between the lower end of the straight bit 13 and the lower end of the L _1, Aribitto 14 is R _1, wherein a stopper 15 is also the distance between the guide stopper 27 of the free state becomes the same L _1. From here, the straight bit 13 is first lowered by a predetermined cutting amount. For example lowered from the upper surface W to the position of the depth of cut L _2, when pressed and fixed to the sleeve 10 by operating the locking screw 32, the stopper 15 is located from the previous position to L ₁ + L ₂ lowered position, also the guide stopper 27 simultaneously Since the guide 15 is pushed down by the stopper 15 from the previous position to the position lowered by L _2, the guide stopper 27 is fixed by operating the fixing lever 29, and the straight bit 13 is first used to cut the flat groove with the cutting amount L ₂ . Perform cutting. After the cutting, the lock of the sleeve 10 is released by operating the lock screw 32 and the straight bit 1
3 is stored upward. At this time, the guide stopper 27 remains locked by the fixing lever 29 (FIG. 5).
(B)). Next, when the dovetail bit 14 is lowered until the stopper 18 comes into contact with the guide stopper 27 at the above position, the moving distance is R ₁ + L ₂ + R ₂ , that is, L ₂ + R ₂ in terms of the distance from the upper surface W of the work. , the depth of cut L ₂ of the straight bit 13, the height difference between initially set 30.3
the value obtained by adding the R ₂ of mm (an inch). Therefore, the cutting amount of the straight bit 13 is taken out by the guide stopper 27,
Since the cutting amount of the dovetail bit 14 can be automatically determined based on the reference value, the sleeve 10 can be locked with the lock screw 32 as it is, and the dovetail groove can be cut by the dovetail bit 14 with an accurate one-dimensional difference from the flat groove. After the cutting, the dovetail bit 14 is retracted upward and the lock by the fixing lever 29 is released, and the guide stopper 27 returns to the position shown in FIG.

As described above, according to the above-described embodiment, the cutting amount of the dovetail bit 14 is automatically determined based on the lowering position of the straight bit 13 regardless of the value of L ₂ , and the guide stopper 27 is fixed. Since the simple operation of the release is sufficient, the precision of the upper surface of the work is not affected, and the trouble of separately adjusting the cutting amount of each bit does not occur. Adjustment gauge 3 used for setting the height difference to be performed first
4 has two surfaces of 24.2 mm (eighth) and 27.3 mm (nine) other than the above 30.3 mm (one dimension),
By appropriately selecting the contact surface of the dovetail 14 to be lowered during the adjustment, the difference in the cut amount can be changed. In the present embodiment, the correction range of the stopper 18 by the long holes 21 and 23 is
The maximum value of the adjustment gauge 34 is set to be at least one dimension (30.3 mm) −the minimum value of eight minutes (24.2 mm) = 6.1 mm, and the free stopper 18 is always pulled downward by the tension spring 24. Therefore, even when the setting is changed from one dimension to a smaller one-eighth, the stopper 18 always engages with the guide stopper 27 at the time of contact between the dovetail 14 and the adjustment gauge 34 in FIG. Adjustment work can be performed smoothly. It should be noted that it is preferable to form the adjustment gauge 34 by increasing the step other than the above three patterns, or to prepare a plurality of adjustment gauges 34 having other steps, since the pattern of the cut amount between both bits that can be adjusted increases. However, in this case, it is necessary to set the correction range of the stopper 18 by the elongated holes 21 and 23 to at least the difference between the maximum value and the minimum value.

The guide stopper as a slide member is not limited to the one disposed between the two sleeves, and may be provided separately for each sleeve as long as it can be interlocked. Not limited to Also, if a predetermined step is provided between the portions where the left and right stoppers in the guide stopper abut, or if the predetermined one is provided with a predetermined height difference, it is not necessary to use an adjustment gauge for setting the first height difference, This step or height difference can be arbitrarily changed, or a plurality of guide stoppers provided with different types of steps can be prepared and replaced as needed. Further, the elongated holes, projections, tension springs and the like for providing the correction range in the stopper may be provided on the sleeve on the opposite side to the above-described embodiment, or may be provided on both, depending on the type of the bit.

[0012]

As described above, according to the present invention, since the setting of the cutting amount of both bits is determined by the difference between the two, the cutting amount of one bit is always determined without being affected by the accuracy of the upper surface of the work. Accurate large insert processing can be performed as a reference. If only the difference between the initial cutting amounts is set, the operation of one of the sleeves automatically determines the other cutting amount. Therefore, it is troublesome to set the cutting amounts of the left and right bits independently. And excellent in operability and workability. In particular, if the adjustment gauge is used to set the first difference in the cutting amount, the height difference between the bits can be easily set, and the workability is further improved.

[Brief description of the drawings]

FIG. 1 is an explanatory front view of an insertion router.

FIG. 2A is an explanatory view of a rotation mechanism (a straight bit side). (B) It is explanatory drawing of a rotation mechanism (aribit side).

FIG. 3 is an explanatory cross-sectional view of a large router.

FIG. 4A is an explanatory diagram of a setting procedure of a height difference using an adjustment gauge. (B) It is explanatory drawing of the setting procedure of a height difference using an adjustment gauge. (C) It is explanatory drawing of the setting procedure of a height difference using an adjustment gauge.

FIG. 5 (A) is an explanatory view of an operation procedure at the time of a large insertion process. (B) It is explanatory drawing of the operation procedure at the time of large insertion processing. (C) It is explanatory drawing of the operation procedure at the time of large insertion processing.

[Explanation of symbols]

1. The router body, 2. The housing, 3. The cover,
4 ・ ・ Belt 、 5 ・ ・ Rotation mechanism 、 6 ・ ・ ・ ・ Driving pulley 、 7
..Keys, 8 spindles, 9 ball bearings, 10 sleeves, 11 lift levers, 12
Connection bolt, 13 ··· straight bit, 14 · · alibit, 15, 18 · · stopper, 16, 19 · · bolt, 17 · · · projection, 20 · cup washer, 2
1,23..long hole, 22..projection, 24..tension spring, 25..space, 26..square rod, 27 ..
・ Guide stopper, 28 ・ ・ Pressing bolt, 29 ・ ・ Fixing lever, 30 ・ ・ Pin, 31 ・ ・ Compression spring, 3
2. Lock screw, 33. Pressing body, 34. Adjustment gauge.

──────────────────────────────────────────────────続 き Continuation of front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B27F 1/08 B27C 5/00

Claims (3)

(57) [Claims] 1. A bit is attached to the lower end of the router body.
The two spindles are supported by sleeves, respectively, and
A large insert with a leave that can be moved up and down together with the spindle
A router, which slides on the router body in the vertical movement direction of the sleeve.
Slide part that can be mounted and fixed at any slide position
While the material is provided, the two sleeves
In addition to providing stoppers that can contact the guide member,
At least one of the stoppers
Mounting position can be changed in the vertical movement direction of the sleeve
A large-sized router characterized by the following. 2. The method according to claim 1, wherein
When both sleeves are lowered, each stopper is
At the lower limit position where it comes into contact with the slide member fixed in position,
A predetermined height difference is created between the bits of the sleeves.
And the mounting position of one stopper with respect to the sleeve.
After changing the condition, the slide member is unlocked.
To lower one of the sleeves by the specified amount of cut, and
The slide member lowered by the contact of the upper
By fixing in the lowered position, it can be obtained through the slide member.
Between the lower limit positions of the bits of the two sleeves
A cutting depth setting method in a large insertion router , wherein a predetermined height difference can be set. 3. A predetermined height difference is set between the two sleeves.
When installing the router, use an adjustment gauge with multiple steps
Set the lower part of the body, and put the bits of both sleeves
Claims to contact different steps of the adjustment gauge
2. The cutting depth setting method in the large insertion router described in 2 .