JP3102568U - Portable drill polishing machine - Google Patents

Abstract

An object of the present invention is to provide a portable drill grinder capable of securing sharpness of a drill when performing a drilling operation or a hole expanding operation.
The case includes a case, a drill positioning device, a first polishing sheet, a second polishing sheet, and at least one holding tool. The case includes a handle and is easy to carry, and has a power such as a motor inside. A source and a transmission are provided to drive and stably rotate the emery buff, the drill positioning device is combined with the clearance angle of the cutting edge of the drill to be polished, the first polishing sheet is provided in front of the emery buff, 2 The polishing sheet is provided above the emery buff, and the holding device holds the drill, and the drill positioning device is combined with the drill positioning device to position the extension length and the angle of the drill, and the drill positioning device is mounted on the first and second polishing sheets. Depending on the angle of each cutting edge of the drill, the cutting edge and the second cutting surface are brought into close contact with the emery buffing sloping slope when placed, and the drill is precisely ground. It is carried out.
[Selection diagram] Fig. 1

Description

  The present invention relates to a kind of drill polisher, and more particularly to a portable drill polisher capable of improving polishing accuracy and performing polishing on each cut portion of a drill.

  At present, drills are one of the hand tools that need to be deployed in ordinary households and various workshops, and drills of various sizes used for drills are regularly polished to maintain sharpness, thereby making holes or drilling. It is necessary to be able to perform the hole expansion work smoothly. However, the well-known drill grinder belongs to a large-sized machine, has a high selling price and a large volume, is suitable only for a large factory, and has been difficult to use in a general home or various workshops.

  SUMMARY OF THE INVENTION The main object of the present invention is to provide a kind of portable drill grinder, which can grind each cutting part of the drill, and sharpen the drill when drilling or expanding the hole. To ensure that

  A further object of the present invention is to provide a kind of portable drill grinder, which has a positioning device, which allows a user to position a drill to be pre-ground, and to reduce a clearance angle of a drill and a polishing slope of an emery buff. Polishing can be performed according to the angle of each cutting edge, and can be directly performed at different positions, so that the cutting ability of the cutting edge after polishing is ensured.

  It is another object of the present invention to provide a kind of portable drill grinder, which has a power source, can drive the emery buff with the power provided by the power source, and can rotate it stably. It is possible to eliminate the vibration problem caused by borrowing the apparatus by using the power source of the drill, and to effectively improve the polishing accuracy of the drill.

The invention of claim 1 provides a case in which a power source such as a motor and a transmission device are provided in the interior to easily carry the device with a handle and drive the emery buff to rotate stably and a clearance angle of the cutting edge of the drill. A drill positioning device to be combined, a first polishing sheet provided in front of the emery buff, a second polishing sheet provided above the emery buff, and sandwiching the drill to be polished, and extension of the drill in combination with the drill positioning device Positioning the length and angle, when combined with the first polishing sheet and the second polishing sheet, the cutting edge and the second cutting face of the drill are tight to the polishing slope of the emery buff according to the stationary point and the spiral angle of the drill, respectively. A portable drill grinder, characterized in that it comprises at least one clamping device for causing the drill to grind by bonding to To have.
According to a second aspect of the present invention, there is provided the portable drill grinder according to the first aspect, wherein the drill positioning device includes a jaw fixing seat for accommodating the jaw and a drill positioning die, and the jaw fixing seat and the drill positioning die are the same. A portable drill grinder is provided on a case so as to be positioned on an axis and separated from a set distance.
According to a third aspect of the present invention, there is provided the portable drill grinder according to the second aspect, wherein the drill positioning die includes a movable sheet that is vertically moved and adjusted with respect to the fixed sheet by operating a fixed sheet and an adjustment knob. And a wedge-shaped surface to be joined to the cutting edge of the drill.
According to a fourth aspect of the present invention, there is provided the portable drill grinder according to the first or second aspect, wherein the holding device includes a main body having a different diameter, and a cylindrical elastic holding portion having a size corresponding to the drill size is provided therein. The cylindrical elastic clamping portion forcibly tightly clamps a drill passed through the hole-tightening bolt and the different-diameter body by a hole-tightening bolt screwed into the different-diameter body. To be a portable drill grinder.
According to a fifth aspect of the present invention, in the portable drill polisher according to the fourth aspect, at least one restriction groove is provided on a peripheral edge of the different diameter main body which is close to the small diameter end of the large diameter end. It is a portable drill grinder.
According to a sixth aspect of the present invention, there is provided the portable drill grinder according to the fifth aspect, wherein a shaft hole provided for fitting the small-diameter end of the holding tool into the holding tool fixing seat of the drill positioning device and a set angle of the outer periphery of the shaft hole. As a portable drill grinder, there is provided a restricting convex column at a position, and the restricting convex column can be inserted into a restricting groove of the clamp, whereby the rotation angle of the clamp is limited. I have.
According to a seventh aspect of the present invention, in the portable drill polisher according to the first aspect, an arc-shaped sliding groove is provided on a bottom surface of the first polishing sheet, and a bolt is combined with the arc-shaped sliding groove to form the first drilling sheet. The portable drill grinder is characterized in that the polishing sheet is screwed to the case in a manner capable of adjusting the angle.
The invention of claim 8 is the portable drill grinder according to claim 2, wherein the distance between the first polishing sheet and the emery buff is equal to the distance between the holding fixture fixing seat and the drill positioning die. It is a polishing machine.
According to a ninth aspect of the present invention, in the portable drill polisher according to the fifth aspect, a shaft hole provided for fitting the small-diameter end of the holding tool into the first polishing sheet, and a set angle and a set distance position of the outer periphery of the shaft hole. A portable drill grinder, characterized in that two restricting convex columns are provided, and the restricting convex columns can be inserted into restricting grooves of the clamp, thereby restricting the rotation angle of the clamp. And
According to a tenth aspect of the present invention, in the portable drill polisher according to the ninth aspect, the shaft hole of the first polishing sheet has an upwardly inclined angle, which is set by the clearance angle of the cutting edge of the drill. The feature is a portable drill grinder.
The invention of claim 11 is the portable drill grinder according to claim 2, wherein the distance between the second polishing sheet and the emery buff is matched with the distance between the clamp fixing seat and the drill positioning die. It is a polishing machine.
According to a twelfth aspect of the present invention, there is provided the portable drill polisher according to the fifth aspect, wherein the shaft hole provided for fitting the small-diameter end of the holding tool into the second polishing sheet and the outer periphery of the shaft hole are at a set angular position. A portable drill grinder is provided, wherein a convex column is provided, and the restricting convex column can be inserted into a restricting groove of the holding device, whereby the rotation angle of the holding device is limited.
The invention of claim 13 is the portable drill polisher according to claim 1, wherein the emery buff is installed in a polishing chamber provided in a case, and the polishing chamber is closed by an openable cover. It is a type drill grinder.
According to a fourth aspect of the present invention, in the portable drill polisher according to the first aspect, the case is provided with a plurality of holding tool holding holes having an inclination, and the holding tool holding holes are used for leaving the holding tool. It is a portable drill grinder characterized by the following.
According to a fifteenth aspect of the present invention, in the portable drill grinder according to the fourth aspect, the cylindrical elastic holding portion is provided with a plurality of slits extending in the axial direction and arranged in parallel, whereby a plurality of elastically provided slits are provided. A claw portion is formed, and the rear end of the cylindrical elastic holding portion is outwardly expanded by a fastening bolt with a hole, so that the front end of the cylindrical elastic holding portion contracts inward, thereby forming the cylindrical elastic holding portion. A portable drill grinder characterized in that the drill passed through the section is tightly clamped.

The portable drill grinder provided by the present invention has the following advantages when compared with the above-mentioned conventional technology and other conventional technologies.
1. Polishing can be performed on each cut portion of the drill, and the drill after polishing can ensure sharpness in both drilling and hole expansion.
2. The positioning device allows the user to pre-position the drill, and the cutting edge and the second cutting surface of the drill are brought into close contact with the polishing slope of the emery buff by its own stationary point and the spiral angle, and the cutting edge and the second cutting surface after polishing. Cutting ability can be secured.
3. Equipped with a power source, which allows the emery buff to rotate stably, and eliminates the vibration problems caused by borrowing an electric drill as a power source, and increases the accuracy of the drill polishing. .

  Therefore, the present invention has practicality, novelty, inventive step, and industrial utility value, and satisfies the requirements for utility model registration.

As shown in FIG. 1, the portable drill grinder provided by the present invention drives the emery buff 20 by a built-in power source, stably rotates the emery buff 20, and performs a grinding process by a combination of the clamp 60 and the drill positioning device 30. Before performing the above, the drill 70 to be polished is pinched and positioned with the pin 60 with an accurate extension length and angle. Thus, when polishing is performed, the first polishing sheet 40 is combined with the holding device 60, and the clearance angle of the cutting edge 71 of the drill 70 to be polished is tightly joined to the polishing slope 21 of the emery buff 20, and according to the clearance angle. The cutting edge 71 is polished by the emery buff 20, and the cutting ability of the polished cutting edge 71 is ensured. In addition, the second polishing sheet 50 is combined with the holding tool 60, and the second cutting surface 72 of the drill 70 to be polished is tightly joined to the polishing slope 21 of the emery buff 20 by its own spiral angle, and the spiral angle In accordance with the above, the second cut surface 72 is polished by the emery buff 20, and the cutting ability of the second cut surface 72 after polishing is secured.

  The above-mentioned drill grinder for precisely polishing the cutting edge 71 and the second cutting surface 72 of the drill 70 to be polished includes a case 10, a drill positioning device 30, a first polishing sheet 40, and a second polishing sheet. It comprises a seat 50 and at least one clamping device 60. The case 10 has a handle 11 and is easy to carry. A power source such as a motor and a transmission are provided inside the case 10 to drive the emery buff 20 to rotate it stably. The drill positioning device 30 is combined with the clearance angle of the cutting edge 71 of the drill 70 to be polished. The first polishing sheet 40 is provided in front of the emery buff 20. The second polishing sheet 50 is provided above the emery buff 20. The holding tool 60 holds the drill 70.

  The case 10 is provided with an electric connection facility 12 such as a power supply line and a plug, provides an external power supply to a power source in the case 10, and controls whether or not power is supplied by a selection switch 13. After the power source is driven as an electric motor, power is transmitted to the emery buff 20 by a known type of transmission, such as a gear set. The emery buff 20 is installed in the polishing chamber 14 on the side of the case 10, and the polishing chamber 14 is normally closed by an openable / closable cover 16 pivotally mounted on the case 10 by a hinge 15 in a normal state. Scattering around the debris is prevented. When the user wants to clean the chips, the cover 16 is opened and the chips accumulated in the polishing chamber 14 are cleaned.

  The case 10 has a plurality of inclined holding holes 17 in its front or other space, and the holding holes 17 can be selected according to the size of the drill 70 that the user wants to grind. A plurality of holding tools 60 having different dimensions are accommodated.

  As shown in each figure, the emery buff 20 is driven by a power source provided in the case 10 and rotates stably, and has a rough polishing slope 21 having an appropriate slope on the periphery thereof. Is designed by the clearance angle and the helix angle of the drill 70. In addition, a plurality of air-cooling type heat dissipating pieces 23 are provided on the vertical surface 22 of the emery buff 20 in a radially conformal manner, thereby assisting heat dissipation during the operation period of the emery buff 20.

  The drill positioning device 30 is installed on the outer surface of the case 10, and comprises a holding device fixing seat 31 and a drill positioning die 32 for stably holding the holding device 60 inside, both of which are located on the same axis, and Installed at a certain distance. Among them, a shaft hole 33 into which the holding member 60 is inserted into the holding member fixing seat 31 and a restricting convex column 34 at a set angular position on the outer periphery of the shaft hole 33 are provided. The drill positioning die 32 includes a movable sheet 37 that can be moved up and down on the fixed seat 35 by operating a fixed sheet 35 and an adjustment knob 36, and the movable sheet 37 has a wedge-shaped surface 38 bonded to a cutting edge 71 of a drill 70. Is provided.

  The first polishing sheet 40 is fixed to the case 10 in an angle-adjustable manner, and is located on the same axis in front of the emery buff 20, and has a jaw fixing seat 31 and a drill positioning mold 32 between the first polishing sheet 40 and the emery buff 20. Are installed so as to have the same distance as the distance between them. Further, the first polishing sheet 40 is a substantially L-shaped seat body, an arc-shaped sliding groove 41 is provided on the bottom surface thereof, and the first polishing sheet is formed by a fixing method in which bolts 42 are combined with the arc-shaped sliding groove 41. 40 can be rotated at an appropriate angle with respect to the emery buff 20 as needed. Its purpose is to be applicable to various types of drills with different relief angles or included angles between two cutting edges, such as standard drills, twist drills, bakelite drills and the like.

  An oblique shaft hole 43 provided for fitting of the holding member 60 to the vertical wall 46 of the first polishing sheet 40 and two rotation restricting convex columns 44 and 45 of a set angle and a set distance of the outer periphery of the shaft hole 43 are provided. Can be The shaft hole 43 has an upward inclination of about 10-25 degrees according to the angle of the cutting edge 71 of the drill 70 to be polished.

  The second polishing sheet 50 is fixed to the case 10 above the emery buff 20 using the bolts 51, and has a distance between the jaw fixing seat 31 and the drill positioning die 32 between the second polishing sheet 50 and the emery buff 20. The second polishing sheet 50 is provided with a shaft hole 52 provided for fitting the holding member 60 and a rotation restricting convex column 53 at a set angular position on the outer periphery of the shaft hole 52.

  Please refer to FIG. 2 to FIG. The holding tool 60 for holding the drill 70 to be polished has a main body 61 having a different diameter, and a cylindrical elastic holding section 62 corresponding to the size of the drill 70 to be polished is housed therein. Are provided with a plurality of slits 63 extending in the axial direction and arranged in parallel, a plurality of claw portions having elasticity are formed, and a tightening bolt 64 with a hole screwed to the different diameter main body 61 is tightened. At this time, the rear end of the cylindrical elastic holding portion 62 expands outward, and the front end is forcibly contracted inward, thereby being polished through the tightening bolt 64 with holes and the main body 61 of different diameter. The drill 70 is tightly clamped. In addition, at least one restriction groove 67 is provided on the periphery of the large diameter end 65 of the different diameter main body 61 near the small diameter end 66.

  The drill 70 to be polished is, for example, various kinds of drills such as a standard drill, a twist drill, and a bakelite drill, and forms cutting edges 71 located on both sides of a tip 73, and for injecting a coolant or discharging chips. In addition, at least two spiral or linear grooves 74 are provided on the drill, and the outer peripheral portion of the drill that is not cut off by the grooves 74 serves as a second cutting surface 72 that is used for hole expansion.

  As shown in FIG. 5, before grinding the drill 70 using the grinder, always select a suitable holding tool 60 according to the size of the drill 70, and tightly combine the drill 70. It is inserted into the holding device 60 along the axial direction by the method, and the drill is positioned together with the drill positioning device 30. That is, the small-diameter end 66 of the holding member 60 is fitted into the shaft hole 33 of the drill positioning device 30, and the limiting convex column 34 on the outer periphery of the shaft hole 33 is inserted into the limiting groove 67 of the holding member 60, and used. The operator advances the drill 70 in a manual manner so that the cutting edge 71 and the wedge-shaped surface 38 of the drill positioning die 32 are completely in close contact with each other, and the clamping tool 60 is rotated to move the restriction groove 67 to one end of the restriction groove 67. This is achieved by adjusting the length and angle of the drill 70 projecting out of the holding tool 60 and further tightening the drill 70 held by the tubular elastic holding portion 62 by using a fastening bolt 64 with a hole. You.

  As shown in FIGS. 6 and 7, when the cutting edge 71 of the drill 70 is polished, the holding device 60 and the first polishing sheet 40 located in front of the emery buff 20 are combined. That is, the small-diameter end 66 of the holding member 60 is inserted into the shaft hole 43 of the first polishing sheet 40, and the rotation limiting convex columns 44 and 45 on the outer periphery of the shaft hole 43 are inserted into the limiting groove 67 of the holding member 60. The cutting edge 71 comes into close contact with the polishing slope 21 of the emery buff 20 due to the angle, and the cutting edge 71 is polished. When necessary, the rotation angle of the first polishing sheet 40 is adjusted, and the polishing is performed on various drills. During the polishing process, the user can rotate the holding tool 60, and the angle of rotation of the holding tool 60 is determined by the rotation angle in the limiting groove 67 of the rotation limiting convex pillars 44, 45, whereby the emery buff 20 is rotated. Polishes the entire surface of the cutting edge 71.

  As shown in FIGS. 8 and 9, when polishing the second cutting surface 72 of the drill 70, the clamping device 60 and the second polishing sheet 50 located above the emery buff 20 are combined. The small-diameter end 66 of the holding member 60 is inserted into the shaft hole 52 of the second polishing sheet 50, and the rotation restricting convex column 53 on the outer periphery of the shaft hole 52 is inserted into the restriction groove 67 of the holding member 60, and the second take-up is performed. The surface 72 comes into close contact with the polishing slope 21 of the emery buff 20 due to the spiral angle, and the second cutting surface 72 is polished. During the polishing process, the user can rotate the holding device 60, and the angle of rotation of the holding device 60 is determined by the rotation angle in the limiting groove 67 of the rotation limiting convex 53, whereby the emery buff 20 is rotated. The entire surface of the numbering surface 72 is polished.

  The present invention is a portable drill polisher capable of improving the polishing accuracy and polishing each cut portion of the drill. The actual operation state and specific functions thereof will be described below. The portable drill grinder is provided with a power source such as a motor and a transmission device provided inside the case, which is provided with a handle 11 and is easy to carry. The case 10 drives the emery buff 20 to rotate stably, and the cutting edge of the drill. A drill positioning device 30 combined with a clearance angle of 71, a first polishing sheet 40 provided in front of the emery buff 20, a second polishing sheet 50 provided above the emery buff 20, and a drill 70 to be polished, In combination with the drill positioning device 30, the extension length and the angle of the drill 70 are positioned, and when it is combined with the first polishing sheet 40 and the second polishing sheet 50, according to the clearance angle and the spiral angle of the drill 70, respectively. Then, the cutting edge 71 and the second cutting surface 72 of the drill 70 are tightly adhered to the polished slope 21 of the emery buff 20, and the drill 70 And comprises a, the pincer 60 to perform a precise grinding against.

  The above is a description of a preferred embodiment of the present invention, and does not limit the scope of the present invention, and any modification or alteration of details that can be made based on the present invention shall fall within the scope of the claims of the present invention. I do.

FIG. 2 is a perspective view of the portable drill grinder according to the present invention as viewed from above. FIG. 3 is a perspective view of a holding tool used in the portable drill grinder according to the present invention. FIG. 4 is a plan view showing a state where the holding tool of the present invention positions the drill. FIG. 4 is a side view of FIG. 3. FIG. 4 is a plan view of the portable drill grinder according to the present invention when performing drill positioning. FIG. 4 is a side view when the cutting edge of the drill is polished by the portable drill polisher of the present invention. FIG. 7 is a plan view of FIG. 6. FIG. 4 is a front view of the portable drill polisher according to the present invention when performing a polishing operation on a second cutting surface of the drill; FIG. 9 is a side view of FIG. 8.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 10 Case 11 Handle 12 Electric connection equipment 13 Selection switch 14 Polishing chamber 15 Hinge 16 Cover 17 Holder holding hole 20 Emery buff 21 Polishing slope 22 Vertical surface 23 Heat radiating piece 30 Drill positioning device 31 Holder fixing seat 32 Drill positioning mold 33 Shaft hole 34 Limiting convex pillar 35 Fixed seat 36 Adjustment knob 37 Movable seat 38 Wedge-shaped surface 40 First polishing sheet 41 Arc-shaped sliding groove 42 Bolt 43 Shaft hole 44, 45 Rotation restricting convex pillar 46 Vertical wall 50 Second polishing sheet 51 Bolt 52 Shaft hole 53 Rotation limiting convex column 60 Clamping tool 61 Different diameter body 62 Cylindrical elastic clamping portion 63 Slit 64 Tightening bolt 65 with large diameter Large end 66 Small diameter end 67 Restriction groove 70 Drill 71 Cutting edge 72 Second cutting surface 73 Tip 74 groove

Claims (15)

  A case that is equipped with a handle and is easy to carry, a power source such as a motor and a transmission device are provided inside and a case that drives the emery buff to rotate stably and a drill positioning device combined with the relief angle of the cutting edge of the drill, A first polishing sheet provided in front of the emery buff, a second polishing sheet provided above the emery buff, and a drill to be polished sandwiched therebetween, and combined with a drill positioning device to determine the extension length and angle of the drill. When combined with the first polishing sheet and the second polishing sheet, the cutting edge and the second cutting surface of the drill are tightly bonded to the polishing slope of the emery buff according to the stationary point and the helical angle of the drill, respectively. A portable drill grinder, comprising: at least one clamping tool for performing polishing.   2. The portable drill grinder according to claim 1, wherein the drill positioning device includes a jaw fixing seat for accommodating the jaw and a drill positioning die, wherein the jaw fixing seat and the drill positioning die are located on the same axis, and A portable drill grinder, which is provided on a case so as to be separated from a set distance.   3. The portable drill grinder according to claim 2, wherein the drill positioning die includes a movable sheet that is vertically moved and adjusted with respect to the fixed sheet by operating a fixed sheet and an adjustment knob, and the movable sheet is joined to a cutting edge of a drill. Portable drill grinder, characterized in that a wedge-shaped surface is provided.   3. The portable drill grinder according to claim 1, wherein the holding device has a body having a different diameter, and a cylindrical elastic holding portion having a size corresponding to a drill size is provided therein. A portable drill grinder, wherein a tightening bolt with a hole screwed into the different diameter body forcibly tightly clamps a drill passed through the different diameter body with the tightening bolt with the hole. .   5. The portable drill grinder according to claim 4, wherein at least one restricting groove is provided on an edge of the different diameter main body adjacent to the large diameter end and the small diameter end.   6. The portable drill grinder according to claim 5, wherein a shaft hole provided for fitting a small-diameter end of the holding tool into a holding tool fixing seat of the drill positioning device and a limiting convex column located at a set angular position on the outer periphery of the shaft hole. The portable drill grinder is provided, wherein the restricting convex column can be inserted into a restricting groove of the clamp, thereby restricting a rotation angle of the clamp.   2. The portable drill grinder according to claim 1, wherein an arc-shaped sliding groove is provided on a bottom surface of the first polishing sheet, and a bolt is combined with the arc-shaped sliding groove, so that the angle of the first polishing sheet is adjustable. A portable drill grinder characterized by being screwed to a case in a system.   3. The portable drill grinder according to claim 2, wherein a distance between the first polishing sheet and the emery buff is equal to a distance between the holding fixture fixing seat and the drill positioning die.   6. The portable drill grinder according to claim 5, wherein a shaft hole provided for fitting the small-diameter end of the holding tool into the first polishing sheet, and two limiting convex columns located at a set angle and a set distance between the outer periphery of the shaft hole. The portable drill grinder is characterized in that the restricting convex column can be inserted into the restricting groove of the clamp, thereby restricting the rotation angle of the clamp.   10. The portable drill grinder according to claim 9, wherein the shaft hole of the first polishing sheet has an upwardly inclined angle, which is set by a clearance angle of a cutting edge of the drill. Polishing machine.   3. The portable drill grinder according to claim 2, wherein a distance between the second polishing sheet and the emery buff is adjusted to a distance between the holding fixture fixing seat and the drill positioning die.   The portable drill grinding machine according to claim 5, further comprising: a shaft hole provided for fitting the small-diameter end of the holding tool into the second polishing sheet; and a limiting convex column located at a set angular position on the outer periphery of the shaft hole. A portable drill grinder characterized in that a limiting convex column can be inserted into a limiting groove of the holding tool, thereby limiting a rotation angle of the holding tool.   The portable drill polisher according to claim 1, wherein the emery buff is installed in a polishing chamber provided in the case, and the polishing chamber is closed by an openable cover.   2. The portable drill grinder according to claim 1, wherein the case is provided with a plurality of holding tools receiving holes having an inclination, and the holding tool receiving holes are used for leaving the holding tools. Drill polishing machine. 5. The portable drill grinder according to claim 4, wherein the cylindrical elastic holding portion includes a plurality of slits extending in the axial direction and arranged in parallel, thereby forming a plurality of claw portions having elasticity. The rear end of the cylindrical elastic holding portion is expanded outward by the tightening bolt with a hole, so that the front end of the cylindrical elastic holding portion contracts inward, whereby the drill passed through the cylindrical elastic holding portion. A portable drill grinder characterized by tight clamping.

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