JP2908943B2 - Chain only machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chain-only machine, and more particularly to a chain-only machine body mounting structure.

[0002]

2. Description of the Related Art In general, a chain-only machine is widely known as a machine tool for forming a hole in a processing surface of wood.

As a conventional chain only machine, only a chain having a chain blade driven by a motor is provided on a base so as to be vertically movable, and a vice device for holding a workpiece is provided on the base. It is a thing.

[0004] When drilling a processing hole, the work material is clamped by a vise device, and only the chain is moved by moving the machine body in the front-rear and left-right directions. After this positioning,
Only the chain lowers the machine body and drills holes with the chain blade.

[0005]

However, in a chain-only machine as described above, it is possible to machine a machining hole parallel to a connection surface (side surface) of a workpiece.
Since the machined surface cannot be drilled at an angle to the connection surface, to process a joint with a complicated shape such as so-called follow-up joint processing, a saw should be cut from the connection surface in the wood. ,
There is a problem that the machining operation is complicated and time-consuming.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a chain-only machine capable of easily processing a joint having a complicated shape.

[0007]

According to the first aspect of the present invention, there is provided a vice device for holding a workpiece, and a first base portion provided on an upper portion of the vise device so as to be movable in the opening and closing direction of the vise device. A second base portion swingably provided on the first base portion, a support shaft erected on the second base, and a holder supported by the support shaft and holding a chain blade. Yes, and the shaft on one end side of the first base portion
One end side of the second base portion is provided through
The other end of the base part is moved with respect to the movement direction of the first base part.
Move back and forth around the orthogonal baseline on the horizontal plane
As a result, the second base portion swings,
The first end and the other end of the second base portion
Having a sliding portion slidably mounted between
The support shaft is erected on the sliding portion. In the invention of claim 2,
Between the first base portion and the second base portion,
Positioning machine for positioning the swing position of the second base portion
The structure is configured.

[0008]

The work is clamped and held by the vise device.
Then, the first base portion and the second base portion are appropriately adjusted in position and positioned. By lowering the holder having the chain blade along the support shaft, the chain blade comes into contact with the workpiece, and the workpiece is cut. At this time,
Since the holder that holds the chain blade is configured to be swingable with respect to the first base portion, it is possible to machine a machining hole that is inclined with respect to the connection surface of the workpiece.

In addition , since the second base portion moves in the front-rear direction with the base line as a center, when a large hole such as a girder is formed with a hole inclined with respect to the connection surface, first, one hole is required. Processing from the surface in the direction. At this time, for example, the position is adjusted to a position where the second base portion is moved in the front-rear direction from the base line. Thereafter, the workpiece is reversed, and the workpiece is processed from the other side. At this time, contrary to the above, the second base portion is adjusted to a position moved backward from the base line. Thereby, even large and thick ones can be processed. In addition, since it is possible to process the work material with the front and back reversed, it is possible to extremely easily process a complicated shape such as a follow-up joint process or a fire-hit joint process.

Furthermore, in the machine only chain according to claim 2, when allowed to swing the second base portion with respect to the first base portion, the positioning by the positioning mechanism. In this state, a hole as large as a girder and thick and inclined with respect to the connection surface is first machined from one surface. Thereafter, the workpiece is reversed and processing is performed from the other surface.At this time, the second base portion is swung with respect to the first base portion in a direction opposite to the above, and a positioning mechanism is used. Position. Since the positioning of the second base portion with respect to the first base portion is performed by the positioning mechanism, the dimensional deviation can be reliably prevented in the case where the holes are formed by processing the front and back surfaces.

[0011]

An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a front view of a chain-only machine according to the present invention, and FIG. 2 is a view taken along the line II-II in FIG. In FIG. 2, reference numeral 1 denotes a fixed vise, and the fixed vise 1 supports one end of a pair of front and rear guide shafts 2 and 2. The front and rear guide shafts 2 are provided with a movable vise 3 that can move along the front and rear guide shafts 2.
Further, between the moving vise 3 and the fixed vise 1, a longitudinal sliding base 4 is attached to the longitudinal guide shaft 2.
Are provided so as to be movable in the axial direction. A screw shaft 5 is screwed to the front-rear sliding base 4, and a handle 6 is fixed to an end of the screw shaft 5. Further, a shaft 7 is rotatably inserted on the left end side in FIG. 2 of the front-rear sliding base 4, and a central portion of the first bracket 8 is fixed to the shaft 7. One ends of left and right guide shafts 9, 9 are pivotally attached to both ends of the first bracket 8, respectively, and both ends of a second bracket 10 are pivotally attached to the other ends of the left and right guide shafts 9, 9. ing. A pin 11 is fixed to the center of the second bracket 10. The pin 11 passes through a guide hole 4a formed in the front-rear sliding base 4 in an arc shape, and a lever 12 is screwed. I have. On the other hand, the left and right guide shafts 9, 9 are provided with a left and right sliding base 1 so as to be movable in the axial direction.
3 are provided. The left and right sliding base 13 and the front and rear sliding base 4 are formed with an opening 13a and a recess 4b, respectively, so that the chain blade can enter. In addition, upper and lower guide shafts 14 are erected on the left and right sliding base 13 as shown in FIG. A support holder 15 is provided at the upper end of the upper and lower guide shafts 14 in FIG. A spring 16 is provided between the support holder 15 and the left and right sliding base 13 by a vertical guide shaft 14.
It is provided in a state wound around. The support holder 15 is urged upward in the drawing by the spring 16. Also,
The support holder 15 is provided with a chain guide shaft 17, and the chain guide shaft 17 is provided with a chain blade 18. Further, the support holder 15 is provided with a chain drive unit 19 for rotating the chain blade 18. The support holder 15 has grips 15a, 15a.
Are formed.

In the present specification, the second base portion includes a first bracket 8, a left and right guide shaft 9, a second bracket 10, and a left and right sliding base 13. The operation of the chain-only machine configured as described above will be described below.

When a normal drilling operation is performed, the workpiece W is clamped and held between the fixed vice 1 and the moving vise 3 in FIG.
Adjust the position of 3. At this time, the left and right guide shafts 9 are
_Make it parallel to the middle straight line l _o . Then, in FIG. 1, the grip 15a is grasped and the support holder 15 is lowered downward in the figure. As a result, the chain blade 18 also descends, and the chain blade 18 comes into contact with the workpiece W, and a hole is drilled.

Further, a follow-up joint as shown in FIG.
The operation at the time of processing will be described. In FIG.
Workpiece W is clamped and held between fixed vice 1 and movable vise 3
You. Then, the lever 12 is loosened to swing around the shaft 7.
(Solid line in FIG. 2). With this swing, vertical guide shaft
14 has a chain blade 18 via a support holder 15
The left and right sliding base 13 also swings. This state
Operate the handle 6 in the state and move the front and rear sliding base 4
To move along the shaft 2
13 along the left and right guide shafts 9 to determine the position.
I do. Then, in FIG. 1, the grip 15a is grasped.
To lower the support holder 15 downward in the figure. This
The chain blade 18 also descends, and the chain blade 18
The hole S shown in FIG.₁(S_Two)
Work is performed. At this time, the height H of the workpiece W (FIG. 3)
(See (a)) is high, machining with only one side
Hole S ₁, S_TwoDoes not penetrate, so the work material W is upside down
Then, drill holes in the same manner. At this time, the workpiece W
By reversing the front and back, hole S₁, S_TwoThe inclination direction of
The opposite (see Figs. 3 (b) and 3 (c)) is the left and right sliding base.
13 is a horizontal line l in FIG._oAround the axis
Moveable clockwise and counterclockwise around 7 centers
Therefore, the hole is formed by turning the work material W upside down.
Can be Then, the cutting lines m and n in FIG.
The workpiece W is cut along the
Can be formed.

In the case of drilling a fire-hit joint as shown in FIG. 4, the positions of the front and rear sliding base 4 and the left and right sliding base 13 are determined by machining the holes S ₃ and S ₄ of the workpiece W. Position where it can be done. The holes S ₃ and S ₄ can be machined by bringing the chain blade 18 into contact with the workpiece.

As described above, since the chain blade can be inclined with respect to the workpiece, it is easy to work on a follow-up joint, a fired joint or the like having a complicated shape in addition to a normal drilling operation. Can be done.

FIG. 5 is a plan view of another embodiment of the chain-only machine according to the present invention, and FIG. 6 is a front view. The same members as those in the above-described embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

In this embodiment, an arc-shaped guide hole 10a is formed in the second bracket 10. This guide hole 10a
A lock shaft 21 fixed to the front-rear sliding base 4 penetrates through the lock shaft 21, and a lock lever 22 (FIG. 6)
Has been fixed. In FIG. 6, a positioning groove 1 is formed on a surface of the second bracket 10 facing the front-rear sliding base 4.
0b, 10b and 10b are formed. Further, a hole 4c is formed at an appropriate position of the front and rear sliding base 4 facing the positioning groove 10b, and a spring 23 and a steel ball 24 are housed in the hole 4c. It is constantly pressed toward the second bracket 10 by the urging force. The swing position of the second bracket 10 can be determined by engaging the steel ball 24 with the positioning groove 10b.

[0019] Here, the position of the three positioning grooves 10b, first the center of the positioning groove 10b provided on the base line l ₀ in FIG. Also, the remaining two positioning grooves 10
In FIGS. 7A and 7B, b and 10b are generally used in many cases because the dimension A is one length and two dimensions, and the dimension B is five minutes, so that α = 2.39 ° from tan α = B / A. It is set as the center of the base line l ₀ in.

The operation when the follow-up joint is machined by the chain-only machine constructed as described above will be described. First, the lock lever 22 is loosened to cancel the fixed state of the second bracket 10 to the front-rear sliding base 4. In this state, the second bracket 10 is swung with respect to the front-rear sliding base 4 along the guide hole 10a. At this time, the rocking is stopped in a state where the steel ball 24 is engaged with the positioning groove 10b,
At this position, the lock lever 22 is tightened to fix the second bracket 10 to the front-rear sliding base 4. Then, the workpiece W (FIG. 7) is processed by the chain blade 18 (see FIG. 1). Next, the work W is turned upside down and the lock lever 22 is loosened. Then, the second bracket 10 is swung with respect to the front-rear sliding base 4 along the guide hole 10a, and the steel ball 24 is engaged with the positioning groove 10b different from the above to perform positioning. At this position, the lock lever 22 is tightened to fix the second bracket 10 to the front-rear sliding base 4. Then, the workpiece W (FIG. 7) is processed by the chain blade 18 (see FIG. 1). Thereafter, by cutting the workpiece W along the cutting lines m and n,
A follow-up joint can be formed. As described above, the position of the second bracket 10 can be reliably set at a constant angle with respect to the front-rear sliding base 4, so that it is possible to prevent the position from being shifted when cutting is performed from the front and back. it can.

In the above-described embodiment, the steel ball 24 is used as the engaging member for the positioning groove 10b. However, the steel ball 24 is not necessarily limited to the steel ball. For example, as shown in FIG. It may be 25. Further, the setting position of the positioning groove 10b in the above embodiment is represented by α =
The position is 2.39 °, but is not necessarily limited to this position.

[0022]

According to the present invention as described above, in addition to the usual vertical pattern hole processing, it is possible to perform processing of complicated shapes such as follow-up joint processing and fire-hit joint processing. In addition, since the positioning of the second base portion is reliably performed by the positioning mechanism in the follow-up joint processing, there is an effect that errors during processing can be minimized.

[Brief description of the drawings]

FIG. 1 is a front view of a chain-only machine according to the present invention.

FIG. 2 is a view taken in the direction of arrows II-II in FIG.

FIG. 3 is a diagram showing a manufacturing process of the follow-up joint.

FIG. 4 is a front view showing a fire joint.

FIG. 5 is a plan view of another embodiment of the chain-only machine according to the present invention.

FIG. 6 is a front view of another embodiment of the chain-only machine according to the present invention.

FIG. 7 is a diagram showing a manufacturing process of the follow-up joint.

FIG. 8 is a front view of another embodiment of the chain-only machine according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Fixed vise (vice device) 3 ... Moving vise (vice device) 4 ... Front-back sliding base (1st base part) 8 ... 1st bracket (2nd base part) 9 ... Left and right guide shaft (2nd base part) DESCRIPTION OF SYMBOLS 10 ... 2nd bracket (2nd base part) 10b ... Positioning groove (positioning mechanism) 13 ... Left-right sliding base (2nd base part) 14 ... Vertical guide shaft (support shaft) 15 ... Support holder (holder) 18 ... Chain blade 23 ... spring (positioning mechanism) 24 ... steel ball (positioning mechanism) 25 ... locking piece (positioning mechanism) W ... workpiece l _o ... line (baseline)

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B27F 5/06 B27F 5/04 B27F 1/00 B27F 1/08

Claims (2)

(57) [Claims] 1. A vice device for holding a workpiece, a first base portion provided on an upper portion of the vise device so as to be movable in an opening and closing direction of the vise device, and a first base portion capable of swinging. a second base part provided, a support shaft which is erected on the second base, while being supported on the support shaft, have a a holder for holding the chain blade, one end of the first base portion To the above axis via the second base
One end of the second base is provided, and the other end of the second base is
The base perpendicular to the horizontal direction with respect to the movement direction of the first base
By moving back and forth around the line,
The base portion swings, and the second base portion is connected to the one end side of the second base portion.
A sliding portion slidable between the other end and the support shaft;
Is a chain that stands on this sliding part.
Only machine. Between the wherein said first base portion and the second base portion, claims, characterized in that the positioning mechanism for positioning the swing position of the second base portion is configured
Only the chain described in 1 .