WO2010057337A1

WO2010057337A1 - Knife grinder

Info

Publication number: WO2010057337A1
Application number: PCT/CN2008/001901
Authority: WO
Inventors: 廖明科
Original assignee: 台利村企业有限公司
Priority date: 2008-11-21
Filing date: 2008-11-21
Publication date: 2010-05-27

Abstract

A knife grinder (1) has an emery wheel (600) for grinding a knife, fixtures (100A, 100B) for fixing a knife, and a T-type hole sleeve (200) whose end is inserted in a jack and another end is provided with an external flange (202). Clip slots (203) are installed on the periphery of the external flange at intervals and based on the number of the edges of the bit or the milling cutter; Surface of the external flange is installed with location pins (301, 302) for limiting the rotation angle of the bit or the milling cutter. A deviation hole (204) is formed in the T-type hole sleeve. The cutting edge can directly contact with the wheel provided with a deviation angle, when the clamping (400) of the bit or the milling cutter is inserted into the deviation hole, so that the wheel can grind the edge or the cutter which has different length or two or more cutting edges.

Description

Tool grinding machine

The utility model relates to a tool grinding machine, in particular to a tool grinding machine which can provide grinding tools such as drills or milling cutters having two or more blades and different blade lengths in addition to the grinding of the drill bit. Background technique

Common portable drill grinders, such as the Taiwan Patent Publication No. 286610, No. 155338, etc., the main components of which include a casing, a cover body disposed at one end of the casing, and a transmission device installed in the casing , grinding wheel device and guiding device. In use, the casing is locked on the spindle head of the electric drill, and the rotating power of the electric drill is transmitted to the grinding wheel device by the transmission device to rotate; and at the same time, the guiding device is used to fix a to be sharpened The drill bit is made sharp by the rotating grinding wheel device.

Since the conventional portable drill grinder can only provide the sharpening portion of the drill bit on both sides of the drill tip, the portion of the land located at the edge of the escape flute cannot be sharpened, which affects the function of reaming the drill bit.

The designer developed the Patent No. 547228 "Portable Drill Grinder" patent approved by the Taiwan Intellectual Property Office of Taiwan, and the Taiwan Patent No. 1285574 "Double-head Drill Grinder" patent case, as shown in Figure 1A. The "portable drill grinder" is mainly used to drive a grinding wheel 20 to rotate by a power source. When the grinding is performed by a jig and a bit positioning device 30, the jig is matched with a first grinding seat 40. , the cutting edge of the bit to be ground is made to be closely adhered to the grinding bevel of the grinding wheel 20 according to the angle of the clearance of the grinding wheel; and the second grinding seat 50 is matched with the jig to make the edge of the bit to be ground The spiral angle itself is closely adhered to the polishing bevel 21 of the grinding wheel 20 to be ground.

As shown in FIG. 1A, the bit positioning device 30 includes a jig holder 31 for placing a jig therein and a bit positioning die 32. The jig holder 31 is provided with a fitting for the jig. A shaft hole, and a limiting stud at a set angle around the periphery of the shaft hole.

Moreover, the first grinding seat 40 is locked on the casing 10 at the same axial position in front of the grinding wheel 20, and is spaced apart from the grinding wheel 20 by the same fixture holder 31 and the bit positioning die. The distance between 32 pitches. The first grinding base 40 is a substantially L-shaped seat body, and a curved sliding groove 41 is arranged on the bottom surface thereof. The first grinding base 40 can be locked by a bolt 42 and the locking manner of the curved sliding groove 41. Rotating an appropriate angle with respect to the grinding wheel 20 as needed, the purpose of which is to make it suitable for grinding each Types of drill bits, such as standard drills, twist drills, bakelite drills, etc., have various clearance angles or angles between the two cutting edges.

Moreover, the vertical wall 46 of the first polishing seat 40 is provided with a shaft hole 43 for fitting the fixture, and two limiting protrusions 44 and 45 at a set angle and a set distance of the periphery of the shaft hole 43. . The shaft hole 43 cooperates with the angle of the cutting edge of the bit to be ground to have an upward slope of about 10 to 25 degrees.

The second grinding seat 50 is locked to the casing 10 above the grinding wheel 20 by a bolt 51, and is spaced apart from the grinding wheel 20 by a distance between the jig fixing seat 31 and the bit positioning die 32; A shaft hole is provided for fitting the fixture and a limiting projection 53 at a set angle around the shaft hole 52.

As shown in FIG. 1B, the structure of the "double-head drill grinder" includes a power source 10 disposed on a base 100, and two ends of the power shaft 11 extending from both ends of the power source 10 are respectively fixed to the machine. The support member 12 on the seat 100 is provided with two sets of grinding wheels 13, and the outer side of the grinding wheel 13 is further provided with a cooling fan blade 14 for grinding the grinding wheel 13 while performing heat dissipation work; and a cover is further disposed on both sides of the base 100 15, cover the grinding wheel 13 with a cover.

The first polishing seat 20 and the second polishing seat 30 are respectively disposed at the front end and the top end of the cover 15. The two first polishing bases 20 and the second polishing base 30 are provided with a clamp for holding the workpiece 99. Holding the fixture 40, an array positioning device 50 is further disposed on the front end surface of the base 100, so that the workpiece 99 held by the clamping fixture 40 can be surely positioned optimally with the clamping fixture 40. In position, the edge requirement of the workpiece 99 such as a grinding bit or other tool can be achieved by integral cooperation.

However, the Taiwan Patent No. 547228 "Portable Drill Grinder" patent case and the Taiwan Announcement No. 1285574 "Double-head Drill Grinder" patent case can only provide general drill grinding, and cannot provide two-blade, three-blade or The tool grinding of four-blade end mills is still not perfect. The designer of this utility model is researching and improving, thinking about how to increase the application range of the existing mechanism without changing the grinder, so there is the production of the utility model. . Summary of the invention

The purpose of the utility model is to provide a tool grinding machine, which is provided with a T-shaped hole sleeve with a deflection hole, and the outer flange of the T-shaped hole sleeve is provided with a cutting edge capable of cutting with a cutter such as an end mill The corresponding card slot group, the outer flange of the hole sleeve is provided with a positioning tip to define the rotation angle of the tool chuck such as the end mill.

The tool grinder of the utility model has a τ-type hole sleeve with a deflection hole, and can change the sleeve angle according to the number of cutting edges of the cutter such as the drill bit or the end mill, and can also be used to position the tip control end. Since the turning angle of the cutter such as the milling cutter can be ground for the cutting edge, the escape angle, the escape groove, and the like of the end mill or the like.

The tool grinding machine of the utility model can add a notch on the circumference of the outer flange of the τ-shaped hole sleeve, and can perform a six-blade (or eight-blade) end milling cutter and the like every time the T-shaped hole sleeve angle is rotated by 60 degrees. Grinding, or Grinding of a tool such as a three-blade (or four-blade) end mill is performed every time the T-sleeve angle is rotated by 120 degrees.

The tool grinding machine of the utility model is disposed at the inner diameter of the clamping body inside the chuck, and the clamping portion and the clamping portion are additionally provided at the contact with the cutter, and the clamping portion and the clamping portion of different inner diameters are designed. The collet can effectively and stably clamp the cutters of different outer diameter forms, which can effectively avoid the improper vibration of the cutter and improve the efficiency and reliability of the cutter grinding.

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. DRAWINGS

Figure 1 is a perspective view of the common Taiwan Bulletin No. 547228 "Portable Drill Grinder"; Figure 1 B is a perspective view of the common Taiwan Bulletin No. 1285574 "Double-head Drill Grinder"; Figure 2 A is a perspective view of the utility model ;

Figure 2B is a perspective view of the utility model;

Figure 2C is an exploded perspective view of the utility model;

Figure 3 is a perspective view of the alignment of the T-shaped hole sleeve, the chuck and the clamp seat of the present invention;

Figure 4 is a cross-sectional view of the T-shaped hole sleeve of the present invention;

Figure 5 is a perspective view of the end mill of the present invention;

Figure 6 is a perspective view of the gold steel grinding wheel of the present invention;

Figure 7 is a diagram showing the cutting edge of the grinding end milling cutter of the present invention;

Figure 8 is another view of the cutting edge of the grinding end milling cutter of the present invention;

Figure 9 is a diagram showing the escape angle of the grinding end mill of the present invention;

10A is a schematic plan view of a T-shaped hole sleeve of the present invention;

10B is a plan view showing another T-shaped hole sleeve of the present invention;

Figure 11 is a cross-sectional view of the collet of the present invention;

12A is a perspective exploded view of a T-shaped hole sleeve and a first drill holder according to another embodiment of the present invention; FIG. 12B is a perspective view of a T-shaped hole sleeve and a first drill holder according to another embodiment of the present invention; 12C is a perspective view of a T-shaped socket and a first drill holder according to another embodiment of the present invention. Main component symbol description:

Grinder 1

Base 1001

Power source 110

Support 117

Grinding wheel 600

Cooling fan blade 118

First polishing seat 111 The second grinding seat 112 places the object 113

T-shaped hole cover 200 .

Lifting 114

Power source 110

Power cord 115

Automatic power-off protection switch 116 Positioning device 119 Chuck 400

Seat 1191

Perforation 1192

Limit column 1193

Pedestal 1194

Spring 1195

Positioning seat 1196

Fixing parts 1197

Screw 1198

Scale 1199

First bit holder 100A jack 101

Second bit holder 100B jack 102

One end 201

Outer flange 202

Card slot 203

Gap 205

Gap 206

Card tip 103

Skew hole 204

Positioning tip 301, 302 limiting edge 401, 402 collet 400

Gap 2021

End mill 500 Escape angle 502

Scraping trough 503

Outer ring wheel 601

Center line 500A

End angle 602

Sharpening 504, 505

Body part 403

Accessory body 404

Screw joint 405

Tight edge 406

Clamping member 407

Tightening section 408

Clamping section 409

Clamping portion 410

As shown in FIG. 2A, FIG. 2B, FIG. 2C, and FIG. 3, the tool grinder of the present invention is provided with a power source 110 on the base 1001 of the grinder 1, and the two ends of the power source 110 are extended. The two ends of the power shaft respectively pass through the support member 117 on the base 1001 and are provided with two sets of grinding wheels 600. The outer side of the grinding wheel 600 is further provided with a cooling fan blade 118. The two sets of grinding wheels 600 are provided with two sets of first grinding seats. 111 and the second polishing seat 112 are capable of performing the grinding operation on the same grinding machine by the cutters that are oriented in both directions.

The base of the grinder 1 is provided with a large storage area of the object 113 in a large space on the bottom space of the base 1001 for the placement of the T-shaped sleeves 200 of different card slots.

A handle 114 is disposed above the base 1001 of the grinder 1 for gripping the grinder 1 for portability. The power source 110 is connected to a power line 115. The power source 110 and the power line 115 have an automatic power-off protection switch 116. When the power line 115 is connected to a power source, the power source can be powered to the power source via the power line 115. 110. When an overcurrent occurs, the automatic power-off protection switch 116 can be automatically turned off (OFF) to prevent the hazard caused by the overcurrent.

An array positioning device 119 is additionally provided on the front end of the base 1001 of the grinder 1 so that the cutter on the collet 400 can be surely held in an optimal positioning position with the collet 400.

The positioning device 119 mainly has a flat L-shaped seat body 1191. The front end of the base body 1191 has a through hole 1192, and a limiting column 1193 is further disposed on the outer edge of the through hole 1192. The other end of the base body 1191 is further provided with a seat 1194. The pedestal 1194 is internally hollowed with a spring 1195 and is provided with a positioning seat at the top. 1196, the center of the positioning seat 1196 is provided with a bolt-shaped fixing member 1197 central shaft portion passing through the threaded end of the central shaft of the fixing member 1197 (in another embodiment of the present invention, the thread end may also be a double-threaded thread) The end is screwed into the bottom edge of the hollow interior of the pedestal 1194 so that the fastener 1197 can urge the locator 1196 to the top of the pedestal 1194.

Fixing piece 1197 top surface by means of screw 1198 lock inherently a scale piece 1199, scale piece 1199 is provided with a positioning scale, so that when the chuck 400 is positioned, the rotating positioning scale can be viewed.

The drill chuck adjusting mechanism is mainly provided with a T-shaped hole cover 200 for inserting the insertion hole 101 of the first drill holder 100A of the grinder 1 or the insertion hole 102 of the second drill holder 100B, the T-shaped hole One end 201 of the sleeve 200 can be inserted into the insertion hole 101, and the other end has a larger outer diameter, so that after being inserted into the insertion hole 101, an outer flange 202 whose one end is exposed outside the insertion hole 101 is formed; the outer flange 202, An array card slot 203 is disposed at a peripheral interval thereof, and the card slot 203 can be disposed opposite to the two slots, or three slots, four slots, and five slots are oppositely disposed, mainly according to cutting of a cutter such as a drill or an end mill to be ground. The number of edges is adjusted (for example: two-blade, three-blade, four-blade, five-blade, six-blade, eight-blade, etc.), wherein the three-slot card slot 203 can be further added to the circumference of the outer flange 202. The notch 205 (shown in FIG. 10A) can be used to grind the tool such as a six-blade end mill every time the T-shaped hole cover 200 is rotated at an angle of 60 degrees, or to rotate the T-shaped hole cover 200 at an angle of 120 degrees for three-edge end. Grinding of a cutter such as a milling cutter; and the four-slot card slot 203 can be further to the circumference of the outer flange 202 A notch 206 is added (as shown in Fig. 10B), and the tool such as an eight-blade end mill can be ground at an angle of 45 degrees per rotation of the T-shaped sleeve 200, or the angle of the T-shaped sleeve 200 can be rotated 90 degrees each time. The grinding of the tool such as the four-blade end mill can save the number of the T-shaped hole sleeve 200, thereby achieving the benefit of cost reduction; the card slot 203 can be engaged with the clip 103 provided on the outer surface of the bit holder The T-shaped sleeve 200 is positioned within the drill holder socket 101. As shown in FIG. 4, the T-shaped sleeve 200 is internally provided with a deflection hole 204, and the deflection angle of the deflection hole 204 Θ, after the chuck of the cutter such as the end mill is inserted into the skew hole 204, the cutting edge of the cutter such as the end mill and the grinding wheel are inclined at an angle.

As shown in the figure, the tool grinder of the present invention has an outer flange 202 of the T-shaped sleeve 200 which is provided with two positioning tips 301 and 302. The functions of the positioning tips 301 and 302 are mainly used to limit the end milling cutter and the like. The angle of rotation of the collet causes the milling cutter head 400 (shown in FIG. 3) having the restricting edges 401, 402 to be inserted into the skew hole 204 by limiting the relationship between the sides 401, 402 and the positioning tips 301, 302. , limit the angle of rotation to control the length of the cutting edge of the end mill and other tools.

In another embodiment of the present invention, (as shown in FIG. 12A, FIG. 12B, FIG. 12C), the T-shaped sleeve 200 is pivotally connected to the insertion hole 101 of the first drill holder 100A, and the T-shaped sleeve 200 is The outer flange 202 is provided with two positioning tips 301, 302, and the outer surface of the first drill holder 100A has a locking end 103. The outer flange 202 of the T-shaped socket 200 is provided with a notch 2021 through which the locking end 103 passes. The notch 2021 has an angle of 180 degrees, and the two ends of the notch 2021 respectively have a stopping portion, and the T-shaped hole sleeve 200 can pass left or right on the insertion hole 101 of the first bit holder 100A. Rotate 180 degrees to the right The angle, when the milling cutter chuck 400 is inserted into the skew hole 204, the T-shaped hole sleeve 200 can be rotated 180 degrees to the left or right, and the cutter such as the two-blade end mill can be ground.

In the tool grinder of the present invention, the T-shaped hole sleeve 200 can be used in the holder of a blade length 501 of a cutter mounted on a grinder, such as a predetermined grinding bit or an end mill 500 (shown in FIG. 5). The scraping angle 502 of the tool such as the grinding end mill or the second clamping seat 100B of the fluffing groove 503 can be provided, and the cutting edge, the escape angle or the flute groove of the cutter which constitutes the end mill can be ground. .

The tool grinding machine of the present invention uses a side T-shaped steel grinding wheel 600 as shown in FIG. 6, the gold-plated grinding wheel 600 having an outer ring wheel 601 having a larger diameter than the body on one side, and a wheel grinding surface 601 on the one side of the wheel grinding surface. Each layer is compounded with a layer of gold steel sand of considerable thickness.

When grinding the edge of the cutter such as the end mill 500, as shown in Fig. 7, first, the T-shaped sleeve 200 is inserted into the Z-axis insertion hole 101 of the first drill holder 100A, and the cutter such as the end mill 500 is clamped. The chuck 400 is inserted into the skew hole 204 of the T-shaped sleeve 200, so that the cutter such as the end mill 500 is in contact with the wheel body of the grinding wheel 600 at a skew angle. When the grinding wheel rotates, the chuck 400 is simultaneously rotated by the cutters such as the end mills 401, 402 and the positioning tips 301, 302 to grind the cutting edges of the cutters such as the end mill 500. After one side of the sharpening grinding is completed, the T-shaped hole sleeve 200 is rotated by 180 degrees (for example, a cutter such as an end mill that grinds two cutting edges), and then inserted into the Z-axis insertion hole 101 of the first drill holder 100A, and continues. Another cutting edge of the tool such as the end mill 500 is ground.

Since the cutter such as the end mill 500 is in contact with the wheel body of the steel grinding wheel 600 in the case of the skew angle Θ, not only the sharpened cutting edge can be easily ground, but also, as shown in FIG. By the deflection of the center line 500A of the cutter such as the end mill 500 and the end angle 602 of the diamond wheel 600, when the chuck is ground in the directions of 0 degrees and 180 degrees, respectively, the cutting edges 504 having different lengths can be ground. , 505.

When grinding the escape angle θ 1 of the cutter such as the end mill 500, as shown in FIG. 9, the T-shaped sleeve 200 is first loaded into the Y-axis insertion hole of the second drill holder 100B, and the clamping end is milled. The chuck 400 of the cutter 500 or the like is inserted into the skew hole 204 of the T-shaped sleeve 200, so that the cutter such as the end mill 500 is in contact with the outer ring gear 601 of the diamond grinding wheel 600 at an oblique angle, by end milling. The cutters such as the cutter 500 are inclined at a certain angle to the corners of the outer ring gear 601. After the gold steel grinding wheel 600 is rotated, the escape angle of the cutters such as the end mill 500 can be ground.

Therefore, by the T-shaped sleeve 200 with the deflecting hole 204 and the steel grinding wheel 600 with the outer ring wheel 601, the grinding and dressing is quite convenient regardless of whether the cutting edge is a two-blade, three-blade or four-blade, and only needs to be rotated. The T-shaped sleeve 200 can be ground for construction.

As shown in FIG. 11 , the collet 400 has a main body member 403 and a sub-body member 404 that is screwed to each other. The main body member 403 and the sub-body member 404 are oppositely disposed with screwing portions 405 that can be screwed to each other. The inner diameter is provided with a guiding edge 406, and a clamping member 407 having a relative outer diameter is clamped in the pressing edge 406; the clamping member 407 is a hollow cylindrical body, and the two ends thereof are opposite to each other. The end is arranged in the axial direction (in the figure) Not shown), the outer diameter portion is provided with the pressing portion 408 which cooperates with the pressing edge 406 of the main and auxiliary body members 403 and 404, and the inner diameter portion is further provided with a clamping portion 409 having a large diameter, and the circular diameter of the clamping portion 409 is The clamped tool has the same large diameter, and a small-diameter clamping portion 410 is formed at the front end of the clamping portion 409. The diameter of the clamping portion 410 is the same as the diameter of the clamped tool.

In summary, the tool grinder of the present invention is neither found in any publication, nor is there any similar product on the market, so its novelty should be undoubted. In addition, the unique features and functions of the present invention are far from comparable to those of the prior art, so it is indeed more advanced than the prior art, and the requirements of the application requirements of the new patents in accordance with the Chinese Patent Law are in accordance with the law. File a patent application.

The above description is only the best embodiment of the present invention, and the structural features of the present invention are not limited thereto, and any person skilled in the art can easily change or modify in the field of the present invention. The scope of the patents of the present invention can be covered as follows.

Claims

Claim

1. A cutter grinder having a grinding wheel for grinding a drill bit, and a drill bit holder for fixing the drill bit, wherein the clamp seat is provided with a hole sleeve for inserting the chuck; wherein: the hole sleeve is The τ-type hole sleeve has one end which can be inserted into the inside of the insertion hole, and the other end has an outer flange which is exposed outside the insertion hole when the τ-type hole sleeve is inserted into the insertion hole, and the outer edge of the outer flange is provided with a card slot. The card is disposed in alignment with the card tip disposed on the outer surface of the bit holder, and the skew hole is disposed in the t-shaped hole sleeve.

2. A tool grinder according to claim 1 wherein said T-shaped socket has a surface on its outer flange and is provided with a plurality of locating tips for limiting the angle of rotation of the end mill chuck.

3. The cutter grinder according to claim 1, wherein the number of the slot sets of the outer flange of the T-shaped sleeve is two or more than the number of cutting edges of the cutter such as the end mill. Settings.

4. The cutter grinder according to claim 1, wherein the grinding wheel is a gold steel grinding wheel, and one side of the steel grinding wheel is provided with an outer ring having a larger outer diameter.

The cutter grinder according to claim 3, wherein the number of the slot groups of the outer flange of the T-shaped sleeve is two oppositely arranged, three slots, four slots or five slots.

6. The tool grinder according to claim 5, wherein the three-slot card slot can be further provided with a notch on the circumference of the outer flange, and can be rotated by 60 degrees per rotation of the T-shaped hole cover. The grinding of the end mill cutter or the grinding of the three-blade end mill tool by rotating the T-sleeve angle by 120 degrees.

7. The tool grinder as claimed in claim 5, wherein the four-slot card slot can further add a notch to the circumference of the outer flange, and can perform an eight-blade angle of 45 degrees per T-hole sleeve rotation. Grinding of the end mill cutter, or grinding the four-edge end mill tool by rotating the T-sleeve angle 90 degrees each time.

8. The cutter grinder according to claim 1, wherein the collet has a main body member and a sub-body member that is screwed to each other, wherein the main body member and the sub-body member are oppositely disposed to be screwed to each other. a screwing portion having a tight guiding edge at an inner diameter, clamping a clamping member having a relative outer diameter in the pressing edge, the clamping member is a hollow cylindrical body, and the two ends thereof are opposite to each other The end is provided with a trough in the axial direction, the outer diameter portion is arranged to be tight with the pressing edge of the main and auxiliary body parts, and the inner diameter is additionally provided with a large diameter clamping portion, and the circular diameter of the clamping portion is clamped The tool has the same large diameter, and a small-diameter clamping portion is formed at the front end of the clamping portion, and the circular diameter of the clamping portion is the same as the small diameter opposite to the clamped tool.

9. The cutter grinder according to claim 1, wherein a power source is disposed on the base of the grinder, and two sets of grinding wheels are disposed at two ends of the power shaft extending from both ends of the power source, and the two sets of grinding wheels are arranged. Two sets of first grinding seats and second grinding seats are provided, so that the tools in both directions can be ground on the same grinding machine.

10. The tool grinder according to claim 9, wherein the bottom space of the grinder of the grinder In addition, a large storage drawer is provided in a large area.

11. The tool grinder of claim 10, wherein a handle is disposed above the base of the grinder.

12. The tool grinder according to claim 9, wherein the power source is connected to a power line, and an automatic power-off protection switch is provided between the power source and the power line.

13. The tool grinder as claimed in claim 1, wherein the grinding machine has an array positioning device on the front end surface of the base.

The tool grinder according to claim 1, wherein the positioning device mainly has a flat L-shaped seat body, the front end of the seat body has a perforation, and a restricting column is further disposed on the outer edge of the perforation. There is another seat at the other end of the body. The inside of the pedestal is hollowed out by a spring, and a positioning seat is arranged on the top. The center of the positioning seat is provided with a bolt-shaped fixing member central shaft portion passing through the central axis of the fixing member. The threaded end is threaded into the bottom edge of the hollow interior of the pedestal so that the fastener can urge the locating seat against the top of the pedestal.

15. The tool grinder according to claim 14, wherein the top surface of the fixing member is provided with a scale piece by a screw lock, and the scale piece is provided with a positioning scale.