Trimmer jig

Abstract

To provide a trimmer jig excellent in process tolerance without requiring complicated assembly.SOLUTION: A trimmer jig is provided with: a support base 50 supporting a trimmer; a guide body 61 extending in a first direction (X-axis direction) from the support base 50; a slide body 62 slidable along the first direction for the guide body 61; and slide fixing means 64 making the slide body 62 fixable on the guide body 62, being made by integrally assembling the support base 50 and the guide body 61.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a trimmer jig used when forming grooves or the like in a workpiece such as a flat plate with a trimmer. [Background technology]

[0002] If commonly used trimmers (such as the trimmer described in Patent Document 1) are used as is, there is a possibility that the trimmer bit may bounce up or slide sideways when it hits a hard part of the wood, creating a danger. Therefore, for example, Patent Document 2 proposes a trimmer jig for holding a trimmer and processing a target workpiece safely and accurately. The trimmer jig in Patent Document 2 has a holding base that holds a base plate attached to the lower part of an external cylinder that is attached to the trimmer body so as to be movable up and down, a guide body attached to the holding base, and a sliding body that slides the guide body, and the sliding body is moved along the guide body to adjust its position, and the holding base (including the trimmer) is moved while being guided by the guide body, thereby enabling safe trimmer processing. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 10-225910 [Patent Document 2] JP 2017-159656 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the trimmer jig according to the above-mentioned Patent Document 2 requires the guide body to be attached to the holding base using screws or the like, which makes assembly troublesome. In particular, if the attachment accuracy is impaired, it significantly affects the processing accuracy of the trimmer. An object of the present invention is to provide a trimmer jig that is easy to assemble. [Means for solving the problem]

[0005] The trimmer jig of the present invention comprises a support base that supports a trimmer, a guide body extending from the support base in a first direction, a sliding body that is slidable along the first direction relative to the guide body, and fixing means for freely fixing the sliding body to the guide body, and the support base and the guide body are integrally provided. Effect of the Invention

[0006] The trimmer jig according to the present invention allows for easy assembly. [Brief description of the drawings]

[0007] [Figure 1] 1 is a perspective view of an external appearance of a trimmer attached to a trimmer jig according to an embodiment of the present invention; [Diagram 2] 1A is a perspective view of the trimmer jig as viewed obliquely from above, and FIG. 1B is a perspective view of the trimmer jig as viewed from the back side. [Diagram 3] FIG. 2 is an exploded perspective view of the trimmer jig as viewed obliquely from above. [Figure 4] FIG. 2 is an exploded perspective view of the trimmer jig as viewed from the back side. [Diagram 5] 2(a) is a cross-sectional view taken along a plane including line AA in FIG. 2(a) and perpendicular to the extending direction of the guide body. [Figure 6] 13A and 13B are diagrams for explaining a configuration for positioning and holding a trimmer on a trimmer jig. [Figure 7]1A is an oblique view (rear perspective view) of the guide section when the protruding piece of the sliding body is attached to the guide section so that it faces the bit through hole of the support base (first attachment state), (b) is a rear perspective view of the sliding body when moved toward the bit through hole in the first attachment state so that its central axis enters the bit through hole, and (c) is a rear perspective view of the sliding body when attached to the guide section so that it faces the opposite side to the bit through hole of the support base (second attachment state) and the tip of the protruding piece protrudes outward from the guide section. [Figure 8] 13 is a perspective view showing a modified example of a through groove provided in a cover body of the guide portion. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] <Summary of the Invention> A trimmer jig according to one embodiment of the present invention comprises a support base that supports a trimmer, a guide body extending from the support base in a first direction, a sliding body that is slidable along the first direction relative to the guide body, and a fixing means that allows the sliding body to be fixed freely to the guide body, and the support base and the guide body are integrally formed. As a result, the trimmer can be guided to the target processing position by the guide body and the slide body while the trimmer is supported by the support base. Moreover, since the support base and the guide body are integrally provided, troublesome assembly work is unnecessary, and since there is no assembly error, the trimmer can be guided to the processing position with high precision.

[0009] In addition, in a trimmer jig according to another embodiment, the guide body has a guide groove that guides the movement of the sliding body in the first direction, and a cover body is provided that covers the sliding body with part or all of the sliding body disposed in the guide groove. By covering the slide body with the cover body in this manner, it is possible to prevent the slide body from slipping out of the guide groove.

[0010] In addition, in a trimmer jig according to another embodiment, the cover body has a through groove extending in the first direction, and the fixing means includes the cover body and a screw body having a screw shaft portion inserted into the through groove, and the slide body is fixed to the guide body by tightening the screw body against the slide body. This allows the slider to be fixed at a position adjusted relative to the guide.

[0011] In a trimmer jig according to still another embodiment, at least one end of the through groove of the cover body in the first direction functions as a stopper that restricts movement of the slider in the direction of the end. This makes it possible to regulate the range of movement of the slider with a simple structure, and to prevent trouble caused by excessive movement of the slider during trimmer processing, etc.

[0012] In yet another embodiment of the trimmer jig, the sliding body has a narrow portion having a width narrower than the width of the guide groove in a second direction perpendicular to the first direction, and a wide portion having a width wider than the first width, the narrow portion being located within the guide groove, and the wide portion being located on the cover body side of the narrow portion. This allows the slide body to stably move along the first direction without slipping out of the guide groove to the opposite side to the cover body.

[0013] <Embodiment> DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A trimmer jig according to an embodiment of the present invention will now be described with reference to the drawings. Fig. 1 is an external perspective view of a trimmer jig 4 according to this embodiment attached to a trimmer 1. For ease of explanation, in the following description, the direction in which a guide portion 6 of the trimmer jig 4 in Fig. 1 extends is defined as the X-axis direction, the vertical direction (extension direction of the rotation axis of the bit) is defined as the Z-axis direction, and the direction perpendicular to the X-axis and Z-axis is defined as the Y-axis direction.

[0014] (1)Trimmer In this embodiment, the trimmer 1 includes a trimmer body 2 and a cylindrical cutting depth adjustment portion 3 attached to the trimmer body 2. The trimmer body 2 has an electric motor disposed inside and receives power from a battery 24 attached to the upper part to rotate a bit 23 held in a chuck 22 at the lower part, thereby cutting the workpiece. The cutting depth adjustment unit 3 comprises an outer tube portion 31 that is fitted onto the trunk portion 21 of the trimmer body 2 so as to be movable in the vertical direction (Z-axis direction), and a base plate 32 formed on the lower end portion of the outer tube portion 31. The base plate 32 has a through hole 321 at its center for inserting the bit 23 of the trimmer 1 therethrough.

[0015] A vertical movement amount adjustment portion 34 for manually adjusting the vertical movement amount of the trimmer body 2 relative to the outer cylinder portion 31 is provided on the side surface of the outer cylinder portion 31 . In this embodiment, the vertical movement amount adjustment unit 34 is composed of a vertical movement mechanism using a rack and pinion mechanism, and a screw tightening mechanism for fixing the trimmer body 2 in a position after vertical movement. That is, a rack gear 211 is formed in the Z-axis direction on a part of the side surface of the trunk 21 of the trimmer main body 2, and a slit 313 is formed in the outer cylinder 31 at a position corresponding to the rack gear 211. A bolt shaft (not shown) is inserted into a shaft support hole (not shown) of the shaft support parts 311, 312 erected at positions facing each other across the slit 313 of the outer cylinder 31, and a pinion gear 343 meshing with the rack gear 211 is attached between the shaft support parts 311, 312 so as to rotate together with the bolt shaft. A bolt is inserted through an axial hole in pivot support 311, and its tip protrudes from an axial hole in pivot support 312. Resin knob 341 is formed on the head of the bolt by insert molding, and constitutes the operating part of the vertical movement mechanism. A nut body (not shown) embedded in knob 342 is screwed onto the part of the bolt shaft protruding from pivot support 312, and knob 342 constitutes the operating part of the screw tightening mechanism.

[0016] When changing the cutting depth, the knob 342 is turned to loosen the nut body, and the knob 341 is rotated to use the rack and pinion mechanism to move the position of the trimmer body 2 up or down by the desired amount (up and down movement mechanism), and then the nut body is tightened with the knob 342 to prevent the pinion gear 343 from rotating, and the screw is tightened to slightly reduce the inner diameter, and the trimmer body 2 is fixed in the adjusted position by friction with the inner surface of the outer tube 31 (screw tightening mechanism). By adjusting the axial position of the trimmer body 2 relative to the outer cylinder portion 31 with the vertical adjustment portion 34 as described above, the amount of protrusion of the bit 23 from the rear surface of the base plate 32 is changed, and the cutting depth is adjusted.

[0017] Below the slit 313 in the outer tube portion 31, a large portion of the side wall of the outer tube portion 31 is cut out to form a window portion 33, through which the operator can check the state of machining of the workpiece by the bit 23. 6, a threaded body 532 is provided to be threadedly engaged with a spacer 323 on the threaded portion 322 on the opposite side (back side) of the window portion 33 on the outer circumferential surface of the outer cylinder portion 31. The spacer 323 and the threaded body 532 are used, for example, when detachably mounting an optional trimmer guide, and are also used when fixing to the support piece 53 of the trimmer jig 4.

[0018] (2) Trimmer jig The trimmer jig 4 is a jig for holding the trimmer 1 and guiding its processing position, and as shown in FIG. 1, is provided with a trimmer support portion 5 for placing and supporting the base plate 32 of the cutting depth adjustment portion 3 of the trimmer 1, and a guide portion 6 for guiding the processing position of the trimmer 1.

[0019] (2-1) Trimmer support 2(a) and 2(b) are perspective views of the trimmer jig 4 before the trimmer 1 is attached, as viewed from above and below, respectively. The trimmer support part 5 has a rectangular support base 50 that is slightly larger than the base plate 32 of the cutting depth adjustment part 3 of the trimmer 1, and a circular through hole 54 is formed in the support base 50 so that the bit 23 can be inserted therethrough when the trimmer 1 is attached. Here, the through hole 54 is formed in the center of the support base 50 or in its peripheral area.

[0020] The support base 50 is also provided with a holding portion for holding the base plate 32 of the trimmer 1. The holding portion includes, for example, a support piece and a base fixing means. There are multiple support pieces, for example, support pieces 51 and 52 formed at symmetrical positions in the left-right direction (direction parallel to the Y axis) of the edge of the support base 50 on the front side (the guide part 6 side in the X axis direction; the same applies below) in Fig. 2(a), and support piece 53 formed in the center of the edge on the rear side (the trimmer 1 side in the X axis direction; the same applies below, and may be referred to as the rear side). When viewed from above, these are located at the corners of a triangle (equilateral triangle or isosceles triangle) with the support pieces 51 and 52 as the base, and can support the base plate 32 at three points.

[0021] The support pieces 51 to 53 are formed with vertical grooves 511, 521, 531, and the vertical grooves 511, 521 are each provided with a base fixing means. The base fixing means includes, for example, screw bodies 512, 522 whose male screw shaft portions pass through longitudinal grooves 511, 521, and nut bodies 513, 523 into which the screw shaft portions of the screw bodies 512, 522 screw onto the support base 50, and the square-shaped nut bodies 513, 523 (see Figure 6) abut against the base plate 32 from above. 6, a screw shaft portion of a screw body 532 of the trimmer 1 is inserted from the back side into the vertical groove 531 and is screwed into the screw portion 322 with the spacer 323 abutting against the inner surface of the support piece 53. For this reason, the vertical groove 531 may be included in the base fixing means. In this manner, the trimmer 1 can be detachably attached to the support base 50 by the two base fixing means and the screw body 532 of the trimmer 1.

[0022] (2-2) Guide part As shown in FIGS. 2(a) and 2(b), the guide part 6 includes a guide body 61 formed to extend in the X-axis direction (the first direction) from the trimmer support part 5, a slide body 62 that slides in the X-axis direction along the guide body 61, a cover body 63 arranged to cover the upper part of the guide body 61 and the slide body 62, and slide fixing means for fixing the position of the slide body 62. Note that the fixing means is referred to as slide fixing means in order to distinguish it from the base fixing means.

[0023] Hereinafter, the configuration of each part of the guide part 6 will be described in detail with reference to FIGS. 3 to 5. (Guide body 61) FIG. 3 is a perspective view of the trimmer jig 4 with the guide part 6 disassembled, viewed from the upper right. FIG. 4 is a perspective view of the exploded view of FIG. 3, viewed from the lower left. FIG. 5 is a perspective cross-sectional view taken along the line A-A in FIG. 2(a) and cut along a plane perpendicular to the X-axis. As shown in FIGS. 3 and 4, the guide body 61 extending in the X-axis direction with respect to the support base 50 is integrally formed with the support base 50, and the bottom surfaces of the guide body 61 and the support base 50 are on the same plane. Here, integrally means formed from one member, two members in the case of a metal material integrated by welding, or formed as an integral body by injection molding, casting, etc., and cannot be separated by the user's operation.

[0024] A through groove 613 is formed in the center of the guide body 61 in the width direction (Y-axis direction) so as to extend in the X-axis direction and is connected to the through hole 54 of the support base 50. The guide body 61 is divided into guide pieces 611 and 612 by this through groove 613. Note that the through groove 613 may extend to the vicinity of the through hole 54 without being connected to the through hole 54. As a method for integrating the guide body 61 and the support base 50 having the above-mentioned shape, for example, a metal plate may be punched out by press working to form a single intermediate part in which the guide body 61, support base 50, and support pieces 51 to 53 are connected, with a through groove 613 formed in the guide body 61 and a through hole 54 formed in the support base 50, and the intermediate part may be further pressed to bend the support pieces 51 to 53 upward at 90° with respect to the support base 50. The type of metal plate is not particularly limited, but examples include a stainless steel plate and an aluminum plate. In some cases, it may be possible to integrate them by injection molding synthetic resin.

[0025] Spacers 631, 632 narrower than the guide pieces 611, 612 are disposed on the upper surfaces of the guide pieces 611, 612, respectively, and a cover body 63 is placed thereon from above. The pair of spacers 631, 632 are arranged so that the distance between them in the Y-axis direction is larger than the through groove 613 of the guide body 61, as shown in FIGS. 4, screw holes 6111-6116 are formed in the guide pieces 611, 612 of the guide body 61, and through holes 6311-6316 are also provided in positions corresponding to the screw holes 6111-6116 of the spacers 631, 632. Through holes (not shown) are also provided in the cover body 63 at similar positions, and the cover body 63 is fixed to the guide body 61 via the spacers 631, 632 by the screws 6331-6336. Above the through groove 613 of the guide body 61 in the cover body 63, here in the center in the width direction (Y-axis direction), a through groove 633 is formed along the X-axis direction. In addition, both ends in the width direction of the cover body 63 are provided with side cover parts 634, 635 bent downward, and the cross section of the cover body 63 is U-shaped, which covers the sides of the guide pieces 611, 612 and the spacers 631, 632 and reinforces the strength of the entire guide part 6.

[0026] (Slide body) 3 and 4, the slide body 62 has a slide main body 621 (part L1 in FIG. 4) having an upper wide portion 6211 and a lower narrow portion 6212, a protruding piece 622 (part L2 in FIG. 4) extending along the X-axis direction from the narrow portion 6212 of the slide main body 621, and a central shaft 623 protruding downward from the back surface of the tip of the protruding piece 622. Note that the protruding piece 622 here extends toward the center of the support base 50. The slide body 621, the protruding piece 622 and the central shaft 623 may be integrated in whole or in part, for example, by injection molding of synthetic resin, casting of metal or machining (in this embodiment, an example in which the slide body 621 and the protruding piece 622 are integrated is shown). When the protruding piece 622 and the central shaft 623 are formed separately, for example, a hole is made in the iron protruding piece 622, and the iron central shaft 623 is inserted into the hole and fixed by welding, shrink fitting, cold fitting, or crimping. Of course, it may be formed by other methods. The central shaft 623 is pin-shaped and has a flat lower end, but the tip of the lower end may be pointed, for example, in a conical shape, so that it can be easily inserted into a central hole formed in the workpiece.

[0027] The slide body 62 is housed in a space with a T-shaped cross section formed by the through groove 613 of the guide body 61, the spacers 631, 632 and the cover body 63 so as to be slidable in the X-axis direction (see FIGS. 2(a) and 2(b) and FIG. 5). Specifically, the wide portion 6211 of the slide body 62 of the slide body 62 is positioned within the space surrounded by the guide body 61, the spacers 631, 632, and the cover body 63, and the narrow portion 6212 and the protruding piece 622 of the slide body 621 are positioned within the through groove 613 of the guide body 61. The width of the wide portion 6211 of the slide body 621 in the Y-axis direction (second direction) is wider than the width of the through groove 613 of the guide body 61 in the Y-axis direction, and mainly the slide body 62 has the function of preventing falling from the through groove 613, and at least the narrow portion 6212 (here, the narrow portion 6212 and the protruding piece 622) is guided in the X-axis direction by the through groove 613 of the guide body 61.

[0028] 3, a screw hole 624 is provided in the slide body 62 at a position corresponding to the through groove 633 of the cover body 63, and a screw portion (screw shaft portion) 643 of the screw body 64 of the slide fixing means described below is screwed into this portion. Note that the screw hole 624 is formed by a nut body inserted into a recess of the slide main body 621, but it may also be a hole that is threaded. The slide fixing means includes the screw body 64 and the cover body 63, and may further include (the screw hole 624 of) the slide body 62 into which the screw body 64 screws. FIG. 5 is a diagram showing a cross section of the trimmer jig 4 taken along a plane that includes the line AA in the guide portion 6 of FIG. 2(a) and is perpendicular to the X-axis. As shown in the figure, the narrow width portion 6212 of the slide body 62 fits between the guide pieces 611 and 612 (that is, the through groove 613 ), and the central axis 623 projects downward beyond the guide body 61 .

[0029] As described above, the portion of the wide portion 6211 of the slide body 621 that protrudes outward from the narrow portion 6212 fits between the inner surfaces of the spacers 631, 632 and is supported by the upper surfaces of the guide pieces 611, 612. In addition, the upper surface of the slide body 621 is in contact with (or close to) the inner surface of the top plate portion of the cover body 63 so as to be able to slide thereon. The shape of the slide main body 621 of the slide body 62 is T-shaped when viewed from the X-axis direction, and its dimensions are set so that there is little wobble and that it can slide within the space formed by the through groove 613 between the guide pieces 611, 612, the spacers 631, 632, and the cover body 63. This reduces wobble of the slide body 62 in the Y-axis and Z-axis directions, suppresses wobble of the central shaft 623, and improves machining accuracy.

[0030] As a result, the slide body 621 is guided by the inner surfaces of the spacers 631, 632, the through groove 613, and the cover body 63, allowing the guide portion 6 to move along the X-axis direction. When the central axis 623 is moved to the desired position, the screw body 64 screwed into the screw hole 624 formed in the upper surface of the slide body 621 is tightened, and the cover body 63 is clamped between the boss portion 642 of the screw body 64 and the upper surface of the slide body 621, thereby fixing the slide body 62. When the screw body 64 is tightened to fix the slide body 62, it is desirable that the bottom surface of the slide main body 621 be flush with the bottom surface of the protruding piece 622 or be higher than the bottom surface of the protruding piece 622.

[0031] (3) Mounting structure of trimmer to trimmer jig As described above, the trimmer 1 is attached to the trimmer jig 4 via the cutting depth adjustment portion 3. Fig. 6 is a perspective view of the trimmer 1 attached to the trimmer jig 4 as viewed from behind. The front edge of the base plate 32 of the cutting depth adjustment section 3 is abutted against the inner surface of the support pieces 51, 52 (the support piece 52 side is hidden by the outer tube portion 31 in Figure 6 and cannot be seen; see Figure 1), and the screw bodies 512, 522 are tightened with the lower ends of rectangular nut bodies 513, 523 screwed into the screw bodies 512, 522 inserted into the vertical grooves 511, 521 abutting against the upper end surface of the base plate 32, and the screw bodies 512, 522 are tightened.

[0032] At the rear side in the X-axis direction of the support base 50, a screw body 532 is inserted into a vertical groove 531 of the support piece 53, and is tightened and fixed to the screw portion 322 of the outer tube portion 31 with a spacer 323 disposed between the screw portion 322 and the support piece 53. As a result, the trimmer 1 is attached to the trimmer jig 4 in a securely positioned state. Then, (a) the slide body 62 is moved along the guide portion 6 until the distance between the central axis 623 and the bit 23 of the trimmer 1 is set to the desired value, and then the screw body 64 is tightened to fix the position of the slide body 62; (b) the central axis 623 of the trimmer jig 4 is inserted into a central hole that has been provided in advance in the workpiece (e.g., a flat plate); and (c) in this state, the trimmer 1 is held by hand and rotated around the central axis 623 to form an arc-shaped groove in the workpiece. However, step (a) may be carried out after step (b).

[0033] (4) Orientation of the protruding piece 622 of the sliding body 62 7(a) to (c) are perspective views of the trimmer jig 4 viewed from the rear surface side. As shown in Figure 7(a), when the protruding piece 622 of the slide body 62 is attached to the guide section 6 toward the through hole 54 of the support base 50 (hereinafter referred to as the "first attachment state"), the through groove 613 of the guide body 61 communicates with the through hole 54, so that the central axis 623 of the tip of the protruding piece 622 can be inserted into the through hole 54 as shown in Figure 7(b), and therefore trimmer processing can be performed in an arc with a small radius. In the state of Fig. 7(a), the threaded portion 643 of the screw body 64 abuts against an end 633b (see Fig. 3) on the front side in the X-axis direction of the slotted through groove 633 of the cover body 63, thereby restricting the sliding body 62 from accidentally slipping out from the front side. In the state of Fig. 7(b), the threaded portion 643 of the screw body 64 abuts against an end 633a on the rear side in the X-axis direction of the through groove 633, thereby restricting the tip of the protruding piece 622 of the sliding body 62 from interfering with the bit 23 of the trimmer. That is, both ends 633a, 633b in the X-axis direction of the through groove 633 of the cover body 63 function as stoppers that restrict the movement range of the slide body 62.

[0034] Therefore, when the slide body 62 is in the first mounting state, the radius of the arc to be machined is maximum when it is in Fig. 7(a). If it is desired to make the radius of the arc to be machined larger than this, the screw body 64 is temporarily removed, the slide body 62 is pulled out from the tip side of the guide body 61, and the slide body 62 is mounted on the guide body 61 with the protruding piece 622 facing forward in the X-axis direction from the slide main body 621 as shown in Fig. 7(c) (hereinafter referred to as the "second mounting state"). This allows the central axis 623 of the protruding piece 622 to be located at a position that protrudes outward in the X-axis direction from the outer end of the guide body 61, thereby making it possible to increase the radius of the circular arc to be machined.

[0035] In this way, by providing a central axis 623 at the tip of the protruding piece 622 protruding from the slide body 621 and connecting the through groove 613 of the guide body 61 with the through hole 54 of the support base 50, the distance between the central axis 623 and the bit 23 can be made smaller in the first mounting state and the central axis can be positioned close to the bit 23, making it possible to form an arc with an extremely small radius. In addition, in the second mounting state, by having the protruding piece 622 of the slide body 62 protrude outward from the guide body 61, machining of a large radius arc is possible without increasing the length of the guide body 61 in the X-axis direction. This reduces the likelihood that the guide part 6 will come into contact with an obstacle such as a wall around the machined groove of the workpiece, increasing the degree of freedom in machining and making it very easy to use. This makes it possible to make the trimmer jig 4 compact while widening the range of machinable circular arc radii as much as possible.

[0036] As described above, according to the trimmer jig 4 of this embodiment, the distance between the bit 23 of the trimmer 1 mounted on the support base 50 and the central axis 623 can be set to the desired dimension while the trimmer 1 is safely fixed, and by rotating the support base 50 around the central axis 623, the trimmer 1 can smoothly form an arc groove (including a non-penetrating groove and a penetrating groove) of the desired radius. Moreover, since the support base 50 and guide portion 6 in the trimmer jig 4 are integrally formed, there is no need to take the trouble of assembling the support base 50 to the guide portion 6 during use, and processing with high dimensional accuracy is possible without assembly errors. <Modification> The trimmer jig according to the present invention has been described above based on the embodiment. However, the present invention is not limited to the above-described embodiment, and includes the following modified examples. (1) Shape of the through groove 633 of the cover body 63 In the above embodiment, the through groove 633 provided in the cover body 63 in the guide portion 6 has both ends 633a, 633b (see Figure 3) in the X-axis direction (first direction) closed in the shape of an elongated hole, and these two ends 633a, 633b abut against the threaded portion 643 of the threaded body 64, thereby functioning as a stopper to regulate the movement range of the slide body 62. However, at least one end (for example, end 633a) may function as a stopper and the other end may be open, or vice versa.

[0037] 8 is a perspective view showing an example of the trimmer jig 4 in the case where a through groove 636 that is open on the outer side in the X-axis direction (the side opposite to the support base 50) is formed in the cover body 63. With the configuration as shown in the figure, it is possible to easily switch between the first mounting state and the second mounting state by simply loosening the screw body 64 a little, pulling it out from the front side of the through groove 636, changing the direction of the protruding piece 622, and inserting it into the through groove 636 without completely removing the screw body 64 from the slide body 62.

[0038] (2) Cross-sectional shape of the cover In the above embodiment, both ends in the width direction (Y-axis direction) of the cover body 63 of the guide portion 6 are bent downward to form side cover portions 634, 635 (see Figure 5) so that the cross section is U-shaped. However, as long as it slidably covers the upper surface of the slide body 62, it is not necessary to bend both ends in the width direction downward, and it may be flat, or it may cover the lower surface side of the guide portion 6, or it may cover the lower surface of the guide portion 6 and extend toward the through groove 613 to support the slide body 62 from below.

[0039] (3) Scale display A scale may be formed on the surface of the cover body 63 along the through groove 633 . By aligning this scale and the reference position of the screw body 64 (for example, the position of the contour on the side closer to the support base 50 when the boss portion 642 is viewed from the Y-axis direction) with the position of the radius of the desired arc, the fixed position of the slide body 62 can be easily determined. It is preferable that the scales are formed separately on both sides of the through grooves 633, 636 in accordance with the mounting state of the slide body 62, that is, the first mounting state and the second mounting state.

[0040] (4) Mounting structure for the trimmer to the support base In the above embodiment, the trimmer 1 is positioned and held on the support base 50 by the support pieces 51-53 and the screw bodies 512, 522, 532 via the base plate 32 of the cutting depth adjustment portion 3. However, the structure for holding the trimmer 1 on the support base 50 is not limited to this, and various configurations are possible. In some cases (for example, in the case of a model in which the cutting depth is changed by replacing the bit 23), a configuration in which the trimmer body is directly attached to the support base 50 without the cutting depth adjustment unit 3 being interposed therebetween may also be used.

[0041] (5) Spacer in the guide section In the above embodiment, separate spacers 631, 632 are arranged between the guide body 61 and the cover body 63 of the guide section 6, but the guide body 61 and the spacers 631, 632 may be integrated, or the cover body 63 and the spacers 631, 632 may be integrated. (6) Shape of the slide body In the above embodiment, the wide portion 6211 (widened portion) wider than the width of the through groove 613 in the Y-axis direction (second direction) is provided at the upper portion of the slide body 621 so that the slide body 621 does not fall from the through groove 613 even if the screw engagement between the screw portion 643 of the screw body 64 and the screw hole 624 of the slide body 621 is completely released, but the wide portion 6211 does not necessarily have to be provided. In this case, the spacers 631 and 632 may be unnecessary. In this case, the screw body 64 screwed into the screw hole 624 can prevent the slide body 62 from falling. In the above embodiment, only a portion of the slide body 621 (narrow portion 6212) was stored in the through groove 613 of the guide body 61, but if the wide portion 6211 is not present, the entire slide body 621 can be stored in the through groove 613.

[0042] (7) Whether or not a cover is required If the guide body 61 is formed so that a second through groove narrower in the Y-axis direction than the through groove 613 is provided above the through groove 613 in the cross section of the guide body 61, this second through groove can be used to fix the slide body 62 with the screw body 64 in place of the through groove 633 of the cover body 63 in the above embodiment, and in this case the cover body 63 is not necessary. (8) Modifications other than the central axis In the above embodiment, in order to guide the trimmer 1 to machine the workpiece in an arc, the central axis 623 is provided at the tip of the protruding piece 622 of the trimmer jig 4. However, for example, when machining a groove parallel to one side of the workpiece, a guide member on a straight line intersecting the X-axis direction may be provided instead of the central axis 623.

[0043] <Additional Information> Although the trimmer jig according to the present invention has been described above based on the embodiment and the modified examples, the present invention is not limited to the above embodiment and the modified examples. The present invention also includes forms obtained by applying various modifications to the above embodiment and the modified examples that a person skilled in the art can think of, and forms realized by arbitrarily combining the components and functions of the embodiment and the modified examples within the scope of the present invention. [Industrial Applicability]

[0044] The present invention is suitable as a trimmer jig for guiding machining by a trimmer. [Explanation of symbols]

[0045] 1. Trimmer 2 Trimmer body 3. Cutting depth adjustment section 4 Trimmer jig 5 Trimmer support 6 Guide section 31 External cylinder 32 Base plate 34 Vertical amount adjustment section 50 Support Base 54 Through hole 61 Guide body 62 Slide body 63 Cover body 64 Threaded body 613 Through groove 631, 632 spacer 621 Slide body 622 Projecting piece 623 Central axis 624 screw hole 633, 636 Through groove 6211 Wide section 6212 Narrow part

Claims

1. a support base for supporting the trimmer; a guide body extending in a first direction from the support base; a slider that is slidable along the first direction relative to the guide body; a fixing means for fixing the slide body to the guide body; Equipped with The support base and the guide body are integrally provided. A trimmer jig comprising:

2. the guide body has a guide groove that guides the movement of the slider in the first direction, A cover body is provided to cover the sliding body in a state where a part or the whole of the sliding body is disposed in the guide groove.

2. The trimmer jig according to claim 1 .

3. The cover body has a through groove extending in the first direction, The fixing means includes the cover body and a screw body having a screw shaft portion inserted into the through groove, The slide body is fixed to the guide body by tightening the screw body against the slide body.

3. The trimmer jig according to claim 2.

4. At least one end of the through groove of the cover body in the first direction functions as a stopper that restricts movement of the slider in a direction in which the end is located.

4. The trimmer jig according to claim 3.

5. the slide body has a narrow portion having a width narrower than a width of the guide groove in a second direction perpendicular to the first direction, and a wide portion having a width wider than the width of the guide groove in the second direction, The narrow portion is located within the guide groove, and the wide portion is located on the cover body side of the narrow portion.

5. The trimmer jig according to claim 2, wherein the trimmer jig is a rotatable member.

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