Guiding apparatus for sharpening woodworking cutters

Abstract

A guiding apparatus for sharpening woodworking cutters contains: a holder and an accommodation assembly. The holder clamps a cutter and tilts relative to a grinding plane to form a grinding angle between the holder and the grinding plane. The holder includes a rolling sleeve and an outlet defined between two front ends of two sides thereof to extend a cutting tip of the cutter out of the outlet at an extending distance. The accommodation assembly is joined with the holder and includes a positioning plate. The positioning plate has a stopping extension formed on a rear end thereof to stop the cutting tip of the cutter and has a distance indicator arranged on a top surface thereof adjacent to the stopping extension and with respect to the grinding angle, such that the distance indicator indicates the extending distance at which the cutting tip extends out of the outlet.

Description

FIELD OF THE INVENTION

The present invention relates to a guiding apparatus for sharpening woodworking cutters which safety adjusts an extending distance at which a cutting tip of a cutter extends out of an outlet.

BACKGROUND OF THE INVENTION

As shown in FIG. 8, a conventional guiding apparatus for sharpening woodworking cutters contains a clamping seat 1 obliquely clamping a cutting tip 2A of a cutter 2 so as to maintain a grinding angle G between the cutter 2 and a face 3A of a whetstone 3 as sharpening the cutter 2, wherein the clamping seat 1 has a rolling sleeve 1A fixed on a bottom thereof and has an outlet 1B for extending the cutting tip 2A of the cutter 2 outwardly at an extending distance S. In operation, the cutting tip 2A of the cutter 2 is extended out of the outlet 1B at the extending distance S with respect to the grinding angle G, and the cutter 2 is clamped by the clamping seat 1 to be sharpened. However, the extending distance S is measured by a measuring tool, so a user is injured by the cutter 2 easily. In addition, the conventional guiding apparatus cannot be stored after use.

The present invention has arisen to mitigate and/or obviate the afore-described disadvantages.

SUMMARY OF THE INVENTION

The primary object of the present invention is to provide a guiding apparatus for sharpening woodworking cutters which safety adjusts an extending distance at which a cutting tip of a cutter extends out of an outlet.

Another object of the present invention is to provide a guiding apparatus for sharpening woodworking cutters which hangs a holder and an accommodation assembly.

To obtain the above objective, a guiding apparatus for sharpening woodworking cutters provided by the present invention contains: a holder and an accommodation assembly.

The holder clamps a cutter and tilts relative to a grinding plane to form a grinding angle between the holder and the grinding plane. The holder includes a rolling sleeve and an outlet defined between two front ends of two sides thereof to extend a cutting tip of the cutter out of the outlet at an extending distance.

The accommodation assembly is joined with the holder and includes a positioning plate. The positioning plate has a stopping extension formed on a rear end thereof to stop the cutting tip of the cutter and has a distance indicator arranged on a top surface thereof adjacent to the stopping extension and with respect to the grinding angle, such that the distance indicator indicates the extending distance at which the cutting tip of the cutter extends out of the outlet.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view showing the exploded components of a guiding apparatus for sharpening woodworking cutters according to a preferred embodiment of the present invention.

FIG. 2 is a perspective view showing the assembly of the guiding apparatus for sharpening woodworking cutters according to the preferred embodiment of the present invention.

FIG. 3 is another perspective view showing the assembly of the guiding apparatus for sharpening woodworking cutters according to the preferred embodiment of the present invention.

FIG. 4 is a cross sectional view showing the assembly of the guiding apparatus for sharpening woodworking cutters according to the preferred embodiment of the present invention.

FIG. 5 is a perspective view showing the operation of the guiding apparatus for sharpening woodworking cutters according to the preferred embodiment of the present invention.

FIG. 6 is a plan view showing the operation of the guiding apparatus for sharpening woodworking cutters according to the preferred embodiment of the present invention.

FIG. 7 is another perspective view showing the operation of the guiding apparatus for sharpening woodworking cutters according to the preferred embodiment of the present invention.

FIG. 8 is a cross sectional view of a conventional guiding apparatus for sharpening woodworking cutters.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

With reference to FIGS. 1 to 7, a guiding apparatus for sharpening woodworking cutters according to a preferred embodiment of the present invention comprises: a holder 10 and an accommodation assembly 20.

The holder 10, as illustrated in FIGS. 1 and 5, clamps a cutter 30 tilts relative to a grinding plane to form a grinding angle G between the holder 10 and the grinding plane, and the holder 10 includes a first clamper 11, a second clamper 12 with respect to the first clamper 11, and a threaded guide rod 13 rotatably connected with and between the first clamper 11 and the threaded guide rod 13, wherein the threaded guide rod 13 has a rotating head 131. The holder 10 further includes two slidable rods 14 which are in connection with the first clamper 11 and the second clamper 12, and each of the first clamper 11 and the second clamper 12 has two through orifices 141 defined thereon to insert through the two slidable rods 14, such that the first clamper 11 and the second clamper 12 move close to each other to clamp the cutter 30 or they move away from each other to unclamp the cutter 30 by rotating the threaded guide rod 13. The first clamper 11 has a first clamping portion 111 and a second clamping portion 111A which are arranged on two side surfaces of the first clamper 11, and the second clamper 12 has a third clamping portion 121 and a fourth clamping portion 121A which are arranged on two side surfaces of the second clamper 12, such that the cutter 30 is clamped by the first clamping portion 111, the second clamping portion 111A, the third clamping portion 121, and the fourth clamping portion 121A. The threaded guide rod 13 has a rolling sleeve 15 rotatably coupled on a middle section thereof, and an outlet 10A is defined between two front ends of the first clamper 11 and the second clamper 12 to extend a cutting tip 30A of the cutter 30 out of the outlet 10A at an extending distance S. The holder 10 further includes two fixing orifices 16 defined on one side thereof.

The accommodation assembly 20, as shown in FIGS. 1 to 4, is joined with the holder 10 and includes a positioning plate 21, and the positioning plate 21 has a stopping extension 22 formed on a rear end thereof to stop the cutting tip 30A of the cutter 30, a distance indicator 23 arranged on a top surface thereof adjacent to the stopping extension 22 and with respect to the grinding angle G, such that the distance indicator 23 indicates the extending distance S at which the cutting tip 30A of the cutter 30 extends out of the outlet 10A. The positioning plate 21 also has a retaining portion 24 extending upwardly from one side thereof adjacent to the stopping extension 22 to stop the holder 10, and the positioning plate 21 further has a hanging aperture 25 formed on a front end thereof. The positioning plate 21 further has plural locating holes 231 arranged on a peripheral side 21A thereof and has a slot 21B defined on a bottom surface thereof adjacent to the peripheral side 21A which slidably retains with an affixing mount 26. The affixing mount 26 has a groove 261 defined therein to slidably retain with the peripheral side 21A of the positioning plate 21, a connecting aperture 262 defined thereon opposite to the groove 261, a coupling bolt 264 fitted in the connecting aperture 262 and pushed by a resilient element 263, and a fixing nut 265 screwed with the coupling bolt 264, such that the resilient element 263 pushes a front segment 264A of the coupling bolt 264 to fit with one of the plural locating holes 231 of the peripheral side 21A. The coupling bolt 264 also has a pulling ring 264B disposed on a rear segment thereof to pull the coupling bolt 264 backward. The affixing mount 26 further has a L-shaped rib 266 extending upwardly from a bottom end thereof to retain with the slot 21B and has two joining stems 267 for fitting with the two fixing orifices 16 of the holder 10, hence the affixing mount 26 moves along the peripheral side 21A to adjust the extending distance S.

Referring to FIGS. 1 to 3, in assembly, the groove 261 of the affixing mount 26 slidably retains with the peripheral side 21A of the positioning plate 21, and the L-shaped rib 266 retains with the slot 21B of the positioning plate 21, thus moving the affixing mount 26 along the peripheral side 21A of the positioning plate 21. With reference to FIGS. 1 and 4, the two joining stems 267 of the affixing mount 26 fit with the two fixing orifices 16 of the holder 10 so that the affixing mount 26 drives the holder 10 to move on the positioning plate 21.

Before moving the affixing mount 26, the pulling ring 264B of the coupling bolt 264 is pulled backward so that the front segment 264A removes from the one of the plural locating holes 231 of the peripheral side 21A and presses the resilient element 263, as shown in FIG. 4. Thereby, the holder 10 moves on the positioning plate 21 to adjust the extending distance S, and the distance indicator 23 indicates the extending distance S. After positioning the holder 10, the coupling bolt 264 is released as shown in FIG. 4 so that the resilient element 263 pushes the coupling bolt 264 to move into the one of the plural locating holes 231, thus positioning the holder 10 on the positioning plate 21 at a desired position of the distance indicator 23.

The cutter 30 clamped by the holder 10 is parallel to the positioning plate 21, and the cutting tip 30A extends out of the outlet 10A. As illustrated in FIGS. 5 and 6, the first clamper 11 and the second clamper 12 of the holder 10 are released, and the cutting tip 30A of the cutter 30 is moved to abut against the stopping extension 22, such that the extending distance S is identical to the grinding angle G, and the rotating head 131 of the threaded guide rod 13 is rotated tightly to clamp the cutter 30 by using the first clamper 11 and the second clamper 12, thus adjusting the extending distance S safety.

Thereafter, the holder 10 is removed from the affixing mount 26, as illustrated in FIGS. 1 and 4, wherein the two joining stems 267 of the affixing mount 26 are removed from the two fixing orifices 16 of the holder 10 so that the affixing mount 26 removes from the holder 10, and the cutter 30 is sharpened by the whetstone 3 (as shown in FIG. 8).

After sharpening the cutter 30, the rotating head 131 of the threaded guide rod 13 is rotated loosely so that the first clamper 11 and the second clamper 12 unclamp the cutter 30. Thereafter, as shown in FIGS. 1 to 4, the two joining stems 267 of the affixing mount 26 fit with the two fixing orifices 16 of the holder 10 so that the affixing mount 26 moves close to the stopping extension 22 along the peripheral side 21A of the positioning plate 21, and the retaining portion 24 stops the holder 10, the coupling bolt 264 of the affixing mount 26 is fitted in one of the other of the plural locating holes 231, thus connecting the holder 10 with the accommodation assembly 20, as illustrated in FIG. 7. Preferably, the holder 10 and the accommodation assembly 20 are hung by ways of the hanging aperture 25, after connecting together.

While the preferred embodiments of the invention have been set forth for the purpose of disclosure, modifications of the disclosed embodiments of the invention as well as other embodiments thereof may occur to those skilled in the art. Accordingly, the appended claims are intended to cover all embodiments which do not depart from the spirit and scope of the invention.

Claims

1. A guiding apparatus for sharpening woodworking cutters comprising:

a holder clamping a cutter and tilting relative to a grinding plane to form a grinding angle between the holder and the grinding plane, and the holder including a rolling sleeve and an outlet defined between two front ends of two sides thereof to extend a cutting tip of the cutter out of the outlet at an extending distance;

an accommodation assembly joined with the holder and including a positioning plate, and the positioning plate having a stopping extension formed on a rear end thereof to stop the cutting tip of the cutter, a distance indicator arranged on a top surface thereof adjacent to the stopping extension and with respect to the grinding angle, such that the distance indicator indicates the extending distance at which the cutting tip of the cutter extends out of the outlet.

2. The guiding apparatus for sharpening woodworking cutters as claimed in claim 1, wherein the positioning plate has a peripheral side for slidably retaining with an affixing mount, and the affixing mount moves along the peripheral side of the positioning plate to adjust the extending distance.

3. The guiding apparatus for sharpening woodworking cutters as claimed in claim 1, wherein the positioning plate also has a retaining portion extending upwardly from one side thereof adjacent to the stopping extension to stop the holder.

4. The guiding apparatus for sharpening woodworking cutters as claimed in claim 1, wherein the positioning plate further has a hanging aperture formed on a front end thereof.

5. The guiding apparatus for sharpening woodworking cutters as claimed in claim 1, wherein the positioning plate further has plural locating holes arranged on the peripheral side thereof, and the affixing mount has a groove defined therein to slidably retain with the peripheral side of the positioning plate and has a coupling bolt fitted in a connecting aperture and pushed by a resilient element.

6. The guiding apparatus for sharpening woodworking cutters as claimed in claim 1, wherein the positioning plate further has a slot defined on a bottom surface thereof adjacent to the peripheral side, and the affixing mount further has a L-shaped rib extending upwardly from a bottom end thereof to retain with the slot.

7. The guiding apparatus for sharpening woodworking cutters as claimed in claim 1, wherein the holder further includes a first clamper, a second clamper with respect to the first clamper, and a threaded guide rod rotatably connected with and between the first clamper and the threaded guide rod, such that the first clamper and the second clamper move close to each other or move away from each other; and the first clamper has a first clamping portion and a second clamping portion which are arranged on two side surfaces of the first clamper, the second clamper has a third clamping portion and a fourth clamping portion which are arranged on two side surfaces of the second clamper, such that the cutter is clamped by the first clamping portion, the second clamping portion, the third clamping portion, and the fourth clamping portion.