JP2006062095A - Scale and cutter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To use a scale, which is simply adjusted in its position and can be fixed with high reliability even after adjustment, in a cutter at a low cost. <P>SOLUTION: The scale 24 housed in the grooves 21 and 22 of a table saw 1 is constituted of the scale main body 25 having graduations entered in its surface and has a key hole-shaped notch 26 formed in its end part and the adjusting spring 27 connected to the notch 26 of the scale main body 25. The adjusting spring 27 is composed of the connection part 28 fitted in the notch 26 of the scale main body 25 and the square elastic end parts 19 and 29 extending to both ends of the connection part 28 and fixed in the state housed in the grooves 21 and 22 along the scale main body 25 by elastically pressing the inside surfaces of the grooves 21 and 22 by the projections 30 provided to the outside corner parts of the elastic end parts 29 and 29. If the pressing to the grooves 21 and 22 is released by picking the knob pieces 31 and 31 provided to the elastic end parts 29 and 29 by fingers, the adjusting spring can be slid to an arbitrary position along with the scale main body 25. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a scale that is housed in a groove provided in a table of a cutting machine and is used as a guide for work, and a cutting machine such as a table saw or a band saw using the scale.

For example, in a table saw, a base, a rectangular table horizontally supported on the base, a motor accommodated below the table, and a saw blade that is rotationally driven by the motor and protrudes upward through the table. The material to be cut can be cut by a saw blade by sliding the material to be cut on a table (see Patent Document 1).
In addition, guide rails are provided in the left-right direction before and after the table, and a scale is provided in a groove formed on the upper surface of the guide rail. This scale is slidably accommodated in the groove so that the scale body can be slidable in the groove so that it can be used as a guideline by adjusting the zero position of the scale to the cutting position of the saw blade. It can be fixed at an arbitrary position using fixing means such as the above (see Patent Document 2).

U.S. Pat. No. 56,1996 Japanese Utility Model Publication No. 7-45281

  In such a table saw, since the elastic body of the scale and the screw head protrude from the guide rail, it is easy to get in the way of work, and by accidentally touching the worker or the material to be cut, There is a high possibility that the elastic body will come off or the scale body will move, and it will be unreliable. Further, since it is necessary to newly provide a groove, a screw insertion hole, or the like in the guide rail for locking the elastic body or screwing, the manufacturing cost increases on the table saw side.

  Accordingly, the invention described in claims 1 and 4 provides a scale or a cutting machine that can be fixed with high reliability after adjustment, and can be employed at low cost, as well as easily adjusting the position of the scale body. It is intended.

In order to achieve the above object, the invention according to claim 1 is the invention of the scale, wherein the fixing means of the scale main body is continuously connected to the end of the scale main body and can be accommodated in the groove. In this state, the spring body elastically presses the inner surface of the groove.
In addition to the object of claim 1, the invention according to claim 2 is characterized in that, in order to obtain a spring body with higher reliability at the time of fixation, the spring body is connected to the end of the scale body, However, it has a bifurcated shape that is juxtaposed in the width direction of the scale body and presses the inner surface of the groove in the expanding direction.
In addition to the object of the first or second aspect, the invention described in claim 3 connects the end of the scale body and the spring body in order to facilitate the exchange of the spring body and the scale body and improve the usability. Is configured by fitting a notch formed in the end of the scale body and a connecting portion of the same shape formed in the spring body.

In order to achieve the above object, according to a fourth aspect of the present invention, as the invention of a cutting machine, a groove is formed in a table having a cutting blade, and the scale according to any one of the first to third aspects is formed in the groove. The cutting machine is slidably accommodated.
In addition to the object of claim 4, the invention according to claim 5 is provided with an extension table slidable with respect to the work table, in order to improve the usability when using the extension table. A second groove is provided on the extension of the table groove in the extension table, and the scale according to any one of claims 1 to 3 is slidably accommodated in the second groove.

According to invention of Claim 1 and 4, since the position adjustment of a scale main body can be performed easily and rapidly by simple operation which cancels | releases the press by a spring body, it is excellent in operativity. Further, since the spring body is also accommodated in the groove, there is almost no protruding portion from the guide sleeve or the like of the cutting machine, and there is no possibility of accidental detachment or misalignment, thereby increasing reliability. Furthermore, on the cutting machine side, an extra shape change other than the structure related to the groove is unnecessary, so that it can be used at low cost.
According to the second aspect of the present invention, in addition to the effect of the first aspect, the inner surface of the groove can be effectively pressed, and a spring body with higher reliability at the time of fixing can be obtained.
According to the third aspect of the present invention, in addition to the effect of the first or second aspect, the spring body can be detached from the scale body, the scale body or the spring body can be easily replaced, and the usability is improved.
According to the fifth aspect of the present invention, in addition to the effect of the fourth aspect, when the extension table is used, the extension table can be easily aligned with the scale on the table side and used as a long scale. Usability at the time of use improves.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view and a plan view showing a table saw as an example of the cutting machine of the present invention, FIG. 2 is a cross-sectional view showing an internal mechanism, and the table saw 1 has a flat rectangular shape at the upper end of a flat rectangular base 2. The drive unit 4 equipped with the motor 5 sideways is accommodated inside the base 2. In the drive unit 4, a spindle 7 that rotates by driving of a motor 5 is projected in parallel with the output shaft 6 of the motor 5, and a disk-like saw blade 8 that serves as a cutting blade is orthogonal to the spindle 7. A part of the saw blade 8 passes through the table 3 and protrudes upward in the front-rear direction (vertical direction in the plan view of FIG. 1, with the lower side being the front). A safety cover 9 is provided integrally with the drive unit 4 and covers the saw blade 8 on the upper side of the table 3.

  The drive unit 4 has a maximum 45 ° around the blade edge 12 in the table 3 by meshing with the gear shaft 10 provided in the drive unit 4 and the gear blade 11 fixed in the base 2. By tilting the handle 13 provided on the gear shaft 10, an arbitrary angle can be given to the saw blade 8 in the intersecting direction. After the adjustment, the saw blade 8 can be fixed at the angle together with the drive unit 4 by locking with a lock mechanism (not shown). Reference numeral 14 denotes a blade cover integrated with the drive unit 4 and covering the saw blade 8 on the lower side of the table 3.

  Further, as shown in FIG. 3, square cylindrical guide sleeves 15, 15 are fixed to the front and rear side surfaces of the table 3, and in the guide sleeves 15, 15, a rectangular slide bar 16, 16 is loosely inserted, and between the end portions of the slide bars 16, 16, an extension table 17 having an upper surface coinciding with the upper surface of the table 3 is fixed orthogonally. Therefore, the extension table 17 is slidable from the position shown in FIG. 1 where the extension table 17 comes into contact with the table 3 to the position where the slide bars 16 and 16 are drawn to the maximum length and the furthest away from the table 3. Can be fixed at any position. A parallel ruler 18 parallel to the saw blade 8 is detachably provided on the extension table 17.

  On the other hand, on the upper surfaces of the front and rear guide sleeves 15, inverted L-shaped ridges 19, 19 project in parallel over the entire length with the upper horizontal edges 20, 20 facing each other. A groove 21 is formed between the protrusions 19 and 19. A second groove 22 having the same width and the same depth as the groove 21 is also provided on the upper surfaces of the front and rear slide bars 16, and the front and rear edges of the groove 22 are similarly horizontal edge portions 23 and 23. Projecting toward each other. Among these grooves 21 and 22, the scale 24 is accommodated in the grooves 21 and 22 on the front side. As shown in FIG. 4, the scale 24 is a metal band-shaped body that has a scale on the upper surface and is formed to be approximately the same width as the grooves 21 and 22. The scale body 25 includes a notch 26 and an adjustment spring 27 as a spring body connected to the scale body 25.

  The adjustment spring 27 is made of metal having the same thickness as the scale main body 25, and as shown in FIG. 5, a central connecting portion 28 having the same keyhole-like outer shape that fits into the notch 26 of the scale main body 25, and its Quadratic elastic end portions 29 and 29 that extend at both ends of the connecting portion 28 and are arranged in parallel so that the dimension between the outer edges is substantially equal to the width of the grooves 21 and 22 in the width direction of the scale body 25. Each of the elastic ends 29 has a bifurcated shape, and triangular projections 30 project outwardly at the corners on the outer edge side of the respective elastic end portions 29, and knob pieces 31 are erected on the inner edge. Therefore, the adjustment spring 27 is integrally connected to the scale body 25 in the sliding direction by fitting the connecting portion 28 into the notch 26 of the scale body 25.

  In the table saw 1 configured as described above, when the scale 24 is first attached to the guide sleeve 15, the end of the scale body 25 without the adjustment spring 27 is inserted into the groove 21 from the left side of the guide sleeve 15. Similarly, when the scale 24 is attached to the slide bar 16, the end of the scale body 25 without the adjustment spring 27 is inserted into the groove 22 from the right side of the slide bar 16. Then, each adjustment spring 27 is repelled by the elastic end portions 29 and 29 being pressed inward by the protrusions 30 and 30 of the elastic end portions 29 and 29 coming into contact with the inner surfaces of the grooves 21 and 22, respectively. A biasing force in the expanding direction is generated. As a result, the frictional force between the protrusion 30 and the inner surfaces of the grooves 21 and 22 is increased and the scale body 25 is fixed at that position.

  For example, when the scale 24 is moved in the guide sleeve 15 from here, when the elastic end portions 29 and 29 are moved toward each other by pinching the tab pieces 31 and 31 with fingers, the protrusions 30 and 30 are formed into the grooves 21. Therefore, the scale body 25 can be slid as it is and adjusted so that the zero position of the scale is positioned on the end extension line of the saw blade 8 as shown in FIG. When the slide position is determined, when the finger is released from the tab pieces 31, 31, the protrusions 30, 30 are again pressed against the inner surface of the groove 21 by the elasticity of the connecting portion 28 and fixed at the position. This operation is the same for the scale 24 in the groove 22 of the slide bar 16, and particularly when the extension table 17 and the parallel ruler 18 are used, the end portions of the guide sleeve 15 are arranged so that the left and right scales 24, 24 are continuous. The same adjustment can be made when the scale is aligned with the scale or when the scale is aligned with the side surface of the parallel ruler 18.

  As described above, according to the scale 24 and the table saw 1 of the above-described form, the fixing means for the scale body 25 can be continuously connected to the end of the scale body 25 and accommodated in the grooves 21 and 22. Since the adjustment spring 27 that elastically presses the inner surfaces of the grooves 21 and 22 in a state is used, the position of the scale body 25 can be easily and quickly adjusted by a simple operation to release the pressure applied by the adjustment spring 27. Excellent in properties. Further, since the adjustment spring 27 is also accommodated in the grooves 21 and 22, there are almost no protruding portions from the guide sleeve 15 and the slide bar 16, and there is no possibility of accidental detachment or misalignment, thereby increasing reliability. Furthermore, since the guide sleeve 15 and the slide bar 16 need not be changed in shape other than the structures related to the grooves 21 and 22, they can be used at a low cost.

Further, the adjustment spring 27 is connected at the center to the end of the scale body 25, and the elastic ends 29 at both ends are arranged side by side in the width direction of the scale body 25 so that the inner surfaces of the grooves 21 and 22 in the expanding direction. Since the inner surface of the grooves 21 and 22 can be effectively pressed, a spring body with higher reliability at the time of fixing can be obtained.
Further, the connection between the end portion of the scale body 25 and the adjustment spring 27 is configured by fitting a notch 26 formed in the end portion of the scale body 25 and a connection portion 28 of the same shape formed in the adjustment spring 27. Therefore, the adjustment spring 27 can be attached to and detached from the scale main body 25, the scale main body 25 or the adjustment spring 27 can be easily replaced, and the usability is improved.
Here, since the scale 24 is slidably accommodated in the groove 22 on the extension table 17 side, when the extension table 17 and the parallel ruler 18 are used, the scale 24 on the table 3 side can be easily aligned. It can be used as a long scale.

In the adjustment spring, the position and number of the protrusions at the elastic end can be changed. Can be pressed. Further, the elastic end portion is not limited to a quadrangle, and may have another shape, or may have the same thin plate shape as the connecting portion.
Further, the shape of the knob piece is not limited to the above-described form, and if the elastic release operation is possible, it can be formed into a pin shape, a through hole or a concave portion can be used, and conversely, such an operation portion can be omitted. Absent.

Of course, the shape of the spring body is not limited to the adjustment spring. For example, the fitting shape with the scale body is made by fitting other shapes such as ellipses, ellipses, triangles, etc. It is possible to change the shape such as a leaf spring that presses one of the inner surfaces. Further, the connection with the scale main body is not limited to the above-described fitting, and the central portion of the spring body can be fixed to the end of the scale main body by other connection means such as screwing.
The scale body and the spring body are not limited to metal, but may be other materials such as synthetic resin, or may be a composite structure made of different materials such as a laminate of metal and synthetic resin.

  On the other hand, on the cutting machine side, horizontal edges are provided on both side edges of the groove, but the scale of the present invention can be used even in a groove without a horizontal edge, and a table saw without an extension table. There is no problem. Of course, the present invention can be applied to other cutting machines such as a band saw as well as a table saw.

It is explanatory drawing (a top is a plane and the bottom is a front) of a table saw. It is a section explanatory view of a table saw. It is sectional explanatory drawing of a table part. It is explanatory drawing of a table front end part. It is explanatory drawing of an adjustment spring.

Explanation of symbols

  1. Table saw, 2. Base, 3. Table, 4. Drive unit, 5. Motor, 8. Saw blade, 15. Guide sleeve, 16. Slide bar, 17. Extension table, 19. Projection, 21, 22. ··· groove, 24 ··· scale, 25 ··· scale body, 26 ··· notch, 27 ··· adjustment spring, 28 · connecting portion, 29 · elastic end portion · 30 ··· projection.

Claims (5)

A scale main body slidably accommodated in a groove provided in a table of a cutting machine, and a scale provided with a fixing means capable of fixing the scale main body at an arbitrary slide position in the groove,
The fixing means is a spring body that is continuously connected to the end of the scale body and can be accommodated in the groove, and elastically presses the inner surface of the groove in the accommodated state. scale.   The spring body has a bifurcated shape in which a central portion is connected to an end portion of the scale body, and both ends are arranged in parallel in the width direction of the scale body and press the inner surface of the groove in the expanding direction. Scale.   The connection between the end portion of the scale body and the spring body is made by fitting a notch formed in the end portion of the scale body with a connection portion of the same shape formed in the spring body. Scale described in   A cutting machine in which a groove is formed in a table having a cutting blade, and the scale according to any one of claims 1 to 3 is slidably accommodated in the groove. If the table is provided with an extension table that can slide with respect to the work table, a second groove is provided on the extension of the table groove in the extension table, and the second groove is charged. The cutting machine according to claim 4, wherein the scale according to any one of items 1 to 3 is slidably accommodated.

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