JPH0531906U - Support structure for head section of mortise cutter - Google Patents

Abstract

(57) [Summary] [Purpose] To allow the parallelism of the circular saw to be adjusted after the mortise cutter is assembled. [Structure] Sliding bases are vertically movably supported on the left and right vertical guide shafts, respectively, and the horizontal guide shafts are bridged between the sliding bases. A vertical sawing circular saw, a horizontal sawing circular saw, and a head unit in which these driving units are integrated by a housing are movably supported on the horizontal guide shaft in a pair of left and right. The left and right sliding bases are supported on the vertical guide shaft so as to be rotatable around that axis,
One end of the lateral guide shaft is loosely fitted to one of the sliding bases, and is pivotally attached to the sliding base by a pin passing therethrough.
The other end of the lateral guide shaft is loosely fitted to the other sliding base and fixed to the sliding base by a fastener. Each head portion and each sliding base are connected to each other via another lateral guide shaft.
When the fastener is loosened and the sliding base is rotated, A = B and the parallelism of the circular saw is obtained.

Description

[Detailed description of the device]

[0001]

[Industrial application]

 The present invention relates to a support structure for a head section of a mortise cutting machine.

[0002]

[Prior Art]

 An example of a mortise cutting machine is shown in Japanese Utility Model Publication No. 52-18493. As shown in FIG. 8, each of the left and right vertical guide shafts 36 supports a sliding base 37 so that the sliding base 37 can move up and down. It is configured by movably supporting two sets of head portions 39 on the shaft 38. Each head unit 39 has a vertical sawing circular saw 40, a horizontal sawing circular saw 41, and a drive unit thereof integrated by a housing.

Then, when performing tenon cutting, the two sets of head parts 39 are slid along the lateral guide shaft 38 to adjust the distance between the two sets of circular saws 40 and 41, and then the sliding base 37. Press down. As a result, the two sets of head portions 39 descend along the vertical guide shaft 36 and perform mortise cutting of the workpiece fixed below.

[0004]

[Problems to be solved by the device]

 However, in the above-mentioned conventional mortising machine, as shown in FIG. 8, the left and right sliding bases 37 are firmly connected and integrated by the connecting member 42, and the lateral guide shaft 38 is also slid on both sides. It is firmly fitted to the moving base 37. Therefore, in order to ensure the parallelism of the circular saws of the left and right head portions 39, that is, the parallelism between the line connecting the two horizontal sawing saws 41 and the line connecting the left and right vertical guide shafts 36, It is necessary to improve the processing accuracy of the hole of the sliding base 37 for passing the shaft 38 and the hole of the head portion, which causes a cost increase. In addition, if a large error is found in the parallelism after assembly, there is a problem that a high degree of skill is required for the work to eliminate it.

The present invention aims to solve such problems.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention provides that the left and right drive parts including a pair of a vertical saw and a horizontal saw operate a lever connected to the drive via a link mechanism. With a mortise machine that is moved up and down with respect to the vertically installed left and right vertical guide shafts to perform mortise cutting of the workpiece, the left and right sliding bases rotate around the vertical guide shafts. Is rotatably supported by the first lateral guide shaft. One end of the first lateral guide shaft is loosely fitted to the one sliding base and is pivotally attached to the sliding base by a pin penetrating therethrough. The other end of the shaft is loosely fitted to the other sliding base and fixed to the sliding base by a fastener, and the heads and the sliding bases are connected to each other via a second lateral guide shaft. Support structure of the head section of the mortise machine characterized by It is adopted.

[0007]

[Action]

 After mounting the head, etc., if there is an error in the parallelism of the circular saws on the left and right heads that exceeds the allowable value, unfasten the fastener with the fastener and rotate the sliding base by a small angle around the vertical guide axis. To move. As a result, the lateral guide shaft rotates in the horizontal plane with the pin on the other sliding base side as a fulcrum, and the parallelism is corrected. After that, if the lateral guide shaft is fixed to the sliding base side with a fastener, the parallelism after the adjustment can be maintained.

The left and right head portions form a pair and are movable on a lateral guide shaft that is stretched over the left and right sliding bases. Therefore, the interval between the left and right vertical saws can be adjusted according to the size of the tenon to be processed. Further, the left and right heads can simultaneously move up and down as the sliding base slides along the vertical guide axis. The vertical grinding saw and horizontal grinding saw cut the mortise by lowering the left and right heads. Since each head part is connected to the left and right sliding bases via the other lateral guide shaft, it does not inadvertently rotate around the lateral guide shaft when moving vertically and horizontally as described above, Maintain a certain posture.

[0009]

【Example】

 Hereinafter, preferred embodiments of a supporting structure for a head portion of a mortise cutting machine according to the present invention will be described with reference to the drawings.

As shown in FIGS. 1 to 3, the tenon shaving machine having the head supporting structure of the present invention has a stand 2. A vise 3 for horizontally fixing a workpiece a on which a tenon is to be formed is attached to the front part of the stand 2, and two left and right vertical guide shafts 4 are attached to the rear part of the stand 2. The workpiece a gripped by the vise 3 enters between the left and right vertical guide shafts 4.

The upper ends of the left and right vertical guide shafts 4 are connected by a beam-shaped support holder 5. At the left end of the support holder 5, one end of a horizontal pin (not shown) extending at right angles to its longitudinal direction is pivotally supported, and at the other end of the horizontal pin, an operating lever 6 is loosely fitted, and A torsion coil spring (not shown) is interposed between the support holder 5 and the operation lever 6. The operation lever 6 is constantly urged by the torsion coil spring so as to jump upward.

As shown in FIGS. 4 and 5, sliding bases 7 are supported on the left and right vertical guide shafts 4 so as to be vertically movable. The sliding base 7 is a substantially U-shaped link, and the vertical guide shaft 4 vertically penetrates through the vertical hole 7d of the vertically long portion 7a. Further, one first lateral guide shaft 8 penetrates the upper lateral portion 7b to connect the sliding bases 7 on the left and right sides.

The left and right sliding bases 7 are supported by the vertical guide shafts 4 so as to be rotatable about their axes, and one end of the first horizontal guide shaft 8 is loosely fitted to the right sliding base 7. At the same time, it is pivotally attached to the sliding base 7 by a pin 34 such as a spring pin that vertically penetrates them, and the other end of the first lateral guide shaft 8 is loosely fitted to the left sliding base 7 and comprises a screw or the like. It is fixed to the sliding base 7 by a fastener 35. The fastener 35 may be other than a screw such as a spring pin.

A second lateral guide shaft 9 penetrates the laterally long portion 7 c of each sliding base 7. The second lateral guide shaft 9 is divided into two right and left parts, and each of the second lateral guide shafts 9 slidably penetrates the laterally elongated part 7c below the sliding base 7.

The first horizontal guide shaft 8 is provided with heads 1 a and 1 b, which are a vertical sawing circular saw 11, a horizontal sawing circular saw 12, and a driving unit 13 thereof integrated by a housing 10. They are supported in pairs so that they can move. Each housing 10 includes a motor (not shown) that is a drive unit 13, and a power transmission mechanism (not shown) that transmits the power of the motor to the pair of vertical sawing circular saw 11 and horizontal sawing saw 12. Covers. A block portion 14 is fixed to the upper part of the housing 10, and the first lateral guide shaft 8 is inserted therethrough. Further, brackets 15 are provided on the left and right sides of the lower portion of the housing 10, and both ends of one of the second lateral guide shafts 9 are fixed to the brackets 15.

Therefore, when the sliding base 7 slides up and down along the vertical guide shaft 4, the head portions 1a and 1b move up and down together with the vertical saw circular saw 11 and the horizontal saw circular saw 12, respectively. When the block portion 14 of each head portion 1a, 1b slides along the first horizontal guide shaft 8, each head portion 1a, 1b is accompanied by a vertical sawing saw 11 and a horizontal sawing saw 12, respectively. Move left and right. The second lateral guide shaft 9 guides the left and right movements of the head portions 1a and 1b, and prevents rotation around the first lateral guide shaft 8 during the movement thereof.

A substantially central portion of the first lateral guide shaft 8 and a substantially central portion of the operating lever 6 are connected by a link 16. Therefore, when the operation lever 6 is pushed down against the torsion coil spring, both heads 1a and 1b simultaneously descend via the first lateral guide shaft 8, and when the operation lever 6 is released, the restoring force of the torsion coil spring is released. As a result, it will rise again and stop.

In the assembled state of the head portion and the like as described above, the line connecting the two horizontal sawing circular saws 12 and the line connecting the left and right vertical guide shafts 4 need to be parallel. This parallelism is normally within the allowable error, but if it exceeds the allowable error, the operation shown in FIG. 4B may be performed.

That is, in the case of (distance B between the ear) ≠ (distance A between the two), first, the fastening by the fastener 35 is released, and the sliding base 7 is slightly moved around the vertical guide axis 4. Rotate at an angle. The first lateral guide shaft 8 rotates in the horizontal plane with the pin 34 of the right sliding base 7 as a fulcrum, and the parallelism is corrected. Then, when the center point C of the fastener 35 moves to the point E and (the distance between the hoe and F) = A, the rotation is stopped, and the fastener 35 slides on the first lateral guide shaft 8. Fix on the base 7 side. As a result, the parallelism after the adjustment is maintained. In addition, | AB | is normally about 1 mm or a value smaller than that.

As shown in FIGS. 6 and 7, each housing 10 is connected to the sliding base 7 via a position adjusting mechanism. That is, the bracket 17 projects upward in the horizontally long portion 7c on the lower side of each sliding base 7, and the shaft 18 penetrates the bracket 17 in the front-rear direction. A plate 20 having a vertically elongated hole 19 is fixed to the tip of the shaft 18 protruding from the bracket 17 to the sliding base 7, and the portion protruding from the bracket 17 to the other side is for locking. The tube 21 is covered. The locking tube 21 is non-rotatable by engaging with the projection 22 protruding from the bracket 17, and a long hole 23 extending in the circumferential direction is formed at the tip end portion thereof. A screw 25 at the tip of the handle 24 penetrates the elongated hole 23 and is screwed into the shaft 18. On the other hand, an L-shaped hook 26 projects from the block portion 14 of the housing 10 toward the plate 20, and the bent tip of the hook 26 is inserted into the elongated hole 19 of the plate 20.

Therefore, when the handle 24 is turned so as to be twisted and the screw 25 is loosened, the handle 24 becomes rotatable with respect to the lock pipe 21, and when the handle 24 is rotated by a desired amount, it is accompanied by it. The plate 20 also rotates, and the housing 10 slides on the lateral guide shaft 8 to move. Thereafter, when the handle 24 is twisted in the opposite direction and the screw 25 is tightened, the handle 24 is fixed to the locking tube 21, and thus the position of the housing 10 is fixed.

The vertical saw circular saw 11 is covered with a rear safety cover 27, and the horizontal saw circular saw 12 is covered with a front cover 32. In addition, an inclined plate 33 for receiving a falling wooden end is attached inside the stand 2.

Next, a series of operations of the tenon slicing machine of the above embodiment will be described. After the mortise machine is assembled, if the parallelism between the line connecting the two horizontal sawing saws 12 and the line connecting the left and right vertical guide shafts 4 is incorrect, loosen the fastener 35 as described above and It is adjusted by shaking the drive shaft 8 sideways.

At the time of mortise cutting, the handle 24 is operated to move the left and right housings 10 along the first horizontal guide shaft 8 to set the interval between the left and right vertical sawing circular saws 11 to the size of the tenon to be processed. Make the size suitable.

Further, the work material a is sent to a position right below the circular saws 11 and 12 by a predetermined length, and is sandwiched and fixed by a vise 3. Then, the operation lever 6 is pushed down. As a result, the left and right housings 10 descend along the vertical guide shaft 4, and the vertically ground circular saw 11 and the horizontally ground circular saw 12 perform mortise cutting on the workpiece a.

[0026]

[Effect of the device]

 Since the present invention is configured as described above, even if the circular saws of the left and right heads have a deviation in parallelism, the lateral guide shaft can be moved to the left and right by rotating the sliding base by a small amount. It can be parallel to the line connecting the vertical guide axes. Therefore, even if the machining accuracy of the hole of the sliding base and the hole of the head portion for passing the lateral guide shaft is somewhat low, the error due to it can be eliminated, and the machining can be simplified accordingly. In addition, since the correction of the flatness can be performed by a simple operation such as loosening the fastener, a high level of skill is not required, and the correction work can be simplified and speeded up.

[Brief description of drawings]

FIG. 1 is a front view of a mortise cutting machine having a head support structure according to the present invention.

FIG. 2 is a right side view of the mortise cutting machine.

FIG. 3 is a rear view of the mortise cutting machine.

FIG. 4 is a partially cutaway plan view showing a support structure of a head portion of the mortise cutting machine.

5 is a sectional view taken along line VV in FIG.

6 is a partially cutaway side view of the position adjusting mechanism of the mortise cutting machine seen from the same direction as FIG.

FIG. 7 is a partial cutaway rear view of the position adjusting mechanism of the mortise cutting machine seen from the same direction as in FIG.

FIG. 8 is a partially cutaway plan view showing a conventional head portion support structure.

[Explanation of symbols]

 1 ... Safety cover device for vertical sawing saw 4 ... Vertical guide shaft 7 ... Sliding base 8 ... Horizontal guide shaft 10 ... Housing 11 ... Vertical sawing saw 12 ... Horizontal sawing saw 13 ... Drive unit 27 ... Cover body 30 ... Presser plate

Claims (1)

[Scope of utility model registration request] 1. A left and right drive unit including a pair of a vertical saw circular saw and a horizontal saw circular saw is erected by operating a lever connected to the drive unit via a link mechanism. In a mortise cutting machine which is moved up and down with respect to the vertical guide shaft of the machine to perform mortise cutting of a work material, left and right sliding bases are supported by the vertical guide shaft so as to be rotatable about the axis. , One end of the first lateral guide shaft is loosely fitted to the one sliding base and is pivotally attached to the sliding base by a pin penetrating therethrough, and the other end of the first lateral guide shaft is the other end. It is characterized in that it is loosely fitted to the sliding base and is fixed to the sliding base by a fastener, and that the head portions and the sliding bases are connected to each other via a second lateral guide shaft. Support structure for the head of the mortise machine.