JPS6347441Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> This invention is based on the processing position of a table that movably supports a workpiece such as wood (for example, a circular saw) in a processing device such as a circular saw that cuts wood. The invention relates to a ruler device for guiding a workpiece to a cutting position by a saw.

<Prior Art> Conventionally, as such a ruler device, one described in, for example, Japanese Utility Model Application Publication No. 141595/1983 is known. As shown schematically in FIG. 6, this is equipped with a ruler (guide member) 102 on the top surface of a table 100 from which a rotating blade such as a circular saw projects upward, and which guides the workpiece in the direction of machining. . Ruler 102
is fixed to the ruler holder 104, and the ruler holder 10
4 is supported by a guide rail 106 integrally provided on the side surface of the table 100 so as to be movable in a direction perpendicular to the direction in which the workpiece is fed. A fixing plate (latching piece) 108 fixed to the tip of the ruler 102 is pressed against one side of the table 100 via the operating rod 112 by operation of the cam 110, and this reaction force also guides the ruler holder 104. Pressed against the rail 106, the position of the ruler 102 on the table 100 is fixed.

<Problems to be solved by the invention> In such a ruler device, the guide rail 106
The movement of the ruler holder 104 and, in turn, the ruler 102 is guided by the fitting of the ruler holder 104 that straddles the guide rail 106.In order to ensure smooth movement without play, both sides of the guide rail 106 must be The groove walls on both sides of the ruler holder 104 must be machined with high precision. Since it is necessary to increase the machining accuracy and fitting accuracy of these two sets of contact surfaces, there is a drawback that machining is troublesome and machining costs are high.

<Means for Solving the Problems> The present invention was developed against the background of the above, and includes the following rulers, ruler holders,
It is characterized by including a hooking piece, a ruler fixing means, a guide surface, a facing surface, and an elastic force applying means. In particular, the key point of the present invention is the presence of elastic force applying means that presses the facing surface formed on the ruler holder against the guide surface formed on the table.

The ruler is provided on the table and guides the workpiece.

The ruler holder is attached to the table so as to be movable in a direction intersecting the guide direction of the ruler, and one end of the ruler is fixed to the ruler holder so that the ruler is movably held.

The hanging piece extends from the other end of the ruler and is provided in such a manner that it can hold the table in cooperation with the ruler holder.

The ruler fixing means applies a force to the hooking pieces and the ruler holder in the direction of approaching each other, and serves to clamp the table and fix the ruler to the table.

The guide surface is formed on the table along the moving direction of the ruler holder.

A facing surface is formed on the ruler holder opposite the guide surface of the table.

The elastic force applying means is provided across the table and the ruler holder, and brings the guide surface of the table and the facing surface of the ruler holder into sliding contact with each other with a constant surface pressure.

Note that this elastic force imparting means may be configured by the spring member itself, but it may be divided into a contact member as a member that transmits elastic force and a spring member that imparts elastic force to this contact member. It is also possible to configure

<Operation> In the ruler device as described above, the guide surface formed on the table and the opposing surface formed on the ruler holder are brought into contact with a constant surface pressure by the elastic force of the elastic force applying means, and the In this state, the ruler holder is moved relative to the table.

<Effects of the invention> Therefore, smooth movement of the ruler holder without rattling or twisting is ensured, and when the ruler fixing means fixes the ruler holder and the ruler to the table, the machining part on the table is secured. It can be fixed at a regular angle.

Furthermore, while ensuring smooth movement of the ruler holder and prevention of inclination during fixation, processing of the guide portion is easier than in the past. That is, in a structure in which a guide rail is fixed to a table and a groove of a ruler holder is fitted into the guide rail, a highly accurate fitting state must be maintained in order to ensure smooth movement. To do this, two sets of flat surfaces that contact each other must be machined with high precision, which increases the processing cost, but the present invention does not require such a high-precision fitted state, and uses an elastic force applying means. By bringing the guide surface of the table into elastic contact with the opposing surface of the ruler holder, smooth movement and correct fixing of the ruler holder can be achieved.

<Example> Hereinafter, an example in which the present invention is applied to a ruler device for a circular saw for woodworking will be described based on the drawings.

A circular saw machine 10 shown in FIG. 1 includes a bed 12,
A table 14 is provided horizontally on the bed 12. A circular saw 16 that functions as a processing section is provided protruding from the upper surface of the table 14, and is rotatably driven by a drive device (not shown). Wood as a processing material is placed on this table 14, and the wood is cut by being fed toward the circular saw 16. A ruler device 18 that guides the movement of the wood is placed on the table 14. is set up.

This ruler device 18 includes a ruler 2 provided across the table 14 in a direction parallel to the plate surface of the circular saw 16.
0 and a ruler holder 22 that holds a ruler 20 movably in a direction parallel to the rotation center line of the circular saw 16, and these are integrally connected to each other.

The ruler 20 has a box-shaped cross-sectional shape as shown in FIG. 4, and its bottom is composed of two bottom plates 24 as shown in FIGS. 3 and 4. The ruler 20 is supported on the upper surface of the table 14 and can slide on the upper surface. Further, in FIG. 4, both sides of the ruler 20 are defined as ruler surfaces 26, and the wood is sent to the circular saw 16 while contacting either of the ruler surfaces 26.

As is clear from FIG. 3, the ruler holder 22
includes a ruler fixing part 28 and a movement guide part 30 that extends downward at right angles and continues from the ruler fixing part 28. One end of the ruler 20 is fitted into the ruler fixing part 28 from the outside, and is fixed with two bolts 32. On the other hand, the movement guide section 30 of the ruler holder 22 is
As is clear from the plan view of FIG. 2, it extends relatively long in a direction perpendicular to the ruler fixing part 28, and both parts 28 and 30 have a T-shaped planar configuration.

As shown in FIG. 3, a vertical guide surface 34 is formed on one side of the table 14 and extends in a direction parallel to the rotation center line of the circular saw 16. As shown in FIG. On the other hand, the movement guide portion 30 of the ruler holder 22 has an opposing surface 3 facing parallel to the guide surface 34 of the table 14.
6 is formed and adapted to contact the guide surface 34. Note that the ruler holder 22 has a facing surface 36.
A horizontal plane 38 perpendicular to the horizontal plane 38 is formed.
Like the ruler 20, the ruler holder 22 is also supported by the table 14 by contacting the upper surface of the table 14.

On the lower surface of the movement guide portion 30 of the ruler holder 22,
A plate spring member 40 that functions as an elastic force applying means is fixed. As shown in FIG. 5, this leaf spring member 40 extends relatively long along the guide surface 34 of the table 14 and has the same length dimension as the movement guide section 30 of the ruler holder 22.

The leaf spring member 40 has two bolts 44 attached to the lower surface of the ruler holder 22 at the flat base 42.
is fixed. Two U-shaped notches 46 are formed in the base 42, and a bent portion 48 is formed by bending diagonally downward with a line connecting the deepest parts of the notches 46 as a bending line. Furthermore, a rising portion 50 is formed in continuity with the bent portion 48 and is bent into a substantially V-shape and rises vertically. It has the same length as the length dimension. Both end portions of the rising portion 50 are slightly bent back toward the base portion 42, and these portions serve as elastic acting portions 52.

That is, as is clear from FIG. 3, a spring engagement groove 54 extending parallel to the guide surface 34 is formed near the guide surface 34 on the lower surface of the table 14. Each of the elastic action parts 52 of the leaf spring member 40 is brought into elastic contact with the vertical engagement wall surface 56 that is on the back side of the ruler holder 34, and based on this elastic force, the opposing surface 36 of the ruler holder 22 It is pressed against the guide surface 34 with a predetermined surface pressure. This elastic force is large enough to allow the opposing surface 36 to slide relative to the guide surface 34.

As is clear from FIGS. 2 and 3, at the end of the ruler 20 opposite to the ruler holder 22, there is a fixing plate 58 that functions as a hanging piece and extends vertically downward from the top surface of the table 14. It is fixed in a protruding state and can come into contact with a side surface 60 that constitutes one side of the table 14 opposite to the guide surface 34 .

A rod 62 is inserted into the ruler 20 and the ruler holder 22 in a direction perpendicular to the guide surface 34 of the table 14. This rod 62
The distal end is fitted into the square hole 64 of the fixing plate 58 to prevent rotation with respect to the fixing plate 58, and the distal end is formed with a head 66 to be engaged with the fixing plate 58 from the outside. ing. A threaded portion 68 is formed at the base end of the rod 60, and projects outward through a through hole 70 formed in the ruler holder 22. A lock nut member 72 is screwed into this threaded portion 68 in its threaded hole 74 . In the unlocked state in which the lock nut member 72 is loosened, a slight gap is maintained between the side surface 60 of the table 14 and the fixing plate 58.

In such an unlocked state, the ruler 20
The ruler holder 22 can be moved along the rotation center line of the circular saw 16, but at this time, due to the elastic force of the leaf spring member 40 provided across the ruler holder 22 and the table 14, table 1
The guide surface 34 of the ruler holder 22 and the opposing surface 36 of the ruler holder 22 slide in close contact with each other. Therefore, the ruler holder 22 and therefore the ruler 20
can be moved smoothly without play or twisting. Even if twisting or the like occurs, a restoring force is applied based on the elastic force of the leaf spring member 40 to eliminate the twisting, so smooth movement is guaranteed.

When fixing the ruler 20 and the ruler holder 22 at predetermined positions on the table 14, use the lock nut 7.
2, the fixing plate 58 is elastically drawn to the table 14 via the rod 62.
The opposite surface 36 of the ruler holder 22 is pressed against the side surface 60 of the table 14 due to this reaction.
strongly pressed against. As a result, the table 14 is tightened by the fixing plate 58 and the ruler holder 22, and the positions of the ruler 20 and the ruler holder 22 are fixed. In this embodiment, the fixing plate 58, the rod 62, the lock nut member 72, etc. constitute the ruler fixing means.

Even when in the locked state, the guiding surface 34 of the table 14 and the opposing surface 3 of the ruler holder 22
6 are locked in surface contact with each other by the elastic force of the leaf spring member 40, the ruler holder 22 is prevented from twisting in the locked state, and the ruler 20 is prevented from tilting, and the ruler surface 26 of the ruler 20 is prevented from twisting. A high perpendicularity between the rotation center line of the circular saw 16 and the rotation center line of the circular saw 16 is ensured.

The embodiments described above are literally illustrative, and
It goes without saying that the present invention can be implemented with various changes based on the knowledge of those skilled in the art, including the specific structure of the elastic force imparting means and the objects to which the present invention is applied.

[Brief explanation of the drawing]

FIG. 1 is a front view of a circular saw machine including a ruler device according to an embodiment of the present invention, and FIG. 2 is a plan view of the ruler device. FIG. 3 is a partially cutaway front view of the ruler device, and FIG. 4 is a sectional view taken along the line -- in FIG. 3. FIG. 5 is a plan view showing the leaf spring member shown in FIG. 3 taken out, and FIG. 6 is a front view schematically showing an example of a conventional ruler device. 14... Table, 16... Circular saw, 18... Ruler device, 20... Ruler, 22... Ruler holder, 28... Ruler fixing part, 30... Movement guide part, 34... Guide surface, 36
...Opposing surface, 40... Leaf spring member (elastic force imparting means),
42...Base portion, 48...Bending portion, 50...Rising portion, 52...Elastic action portion, 54...Spring engagement groove, 56
...Engaging wall surface, 58...Fixing plate (latching piece), 62...Rod, 72...Lock nut member.

Claims (1)

[Claims for Utility Model Registration] 1. A ruler device for guiding a workpiece to a processing position on a table movably supporting the workpiece, comprising: a ruler provided on the table to guide the workpiece; , a ruler holder to which one end of the ruler is fixed and movable with respect to the table in a direction intersecting the guide direction of the ruler; and a ruler holder extending from the other end of the ruler and cooperating with the ruler holder. A force is applied to the latch pieces provided so as to be able to clamp the table, and to the latch pieces and the ruler holder in a direction in which they approach each other, thereby clamping the table and placing the ruler on the table. ruler fixing means for fixing; a guide surface formed on the table along the moving direction of the ruler holder; an opposing surface formed on the ruler holder opposite to the guide surface; the table and the ruler holder; A ruler device for guiding a workpiece, characterized in that it includes an elastic force imparting means that is provided astride the table and slidably contacts the guide surface of the table and the opposing surface of the ruler holder with a constant surface pressure. . 2. The elastic force applying means is constituted by a leaf spring member, and the leaf spring member has one end fixed to the ruler holder and the other end curvedly extending from there to the table along the guide surface. The ruler device according to claim 1, which is elastically engaged with a spring engagement groove formed in the ruler device.