CN113043083B

CN113043083B - Drill bit grinding machine

Info

Publication number: CN113043083B
Application number: CN202110339966.8A
Authority: CN
Inventors: 白斌将; 白家炫
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2022-07-12
Anticipated expiration: 2041-03-30
Also published as: CN113043083A

Abstract

The invention discloses a drill bit grinding machine.A worker firstly confirms the cutting edge angle of a drill bit and rotates a balancing weight to adjust the included angle between a grinding wheel and the drill bit when grinding the drill bit; selecting an adaptive spring cartridge clip according to the rod diameter of the drill bit and installing the spring cartridge clip into a drill bit rod sleeve; a drill bit to be ground is arranged on a drill bit rod collet chuck through a collet chuck, and a locking nut at the front end of the sleeve is locked; the motor drives the grinding wheel to rotate to grind the cutting edge of the drill bit; the included angle between the grinding wheel and the drill bit is adjusted before grinding, the grinding angle is determined, the grinding precision of the cutting edge of the drill bit is high in the grinding process, the operation is simple and easy to learn, the grinding efficiency is improved, and the grinding machine is simple and compact in structure, small in size and low in production cost.

Description

Drill bit grinding machine

Technical Field

The invention relates to the field of grinding of drill bits or carving cutters, in particular to a drill bit grinding machine which is high in grinding precision, simple and easy to learn in operation, capable of improving grinding efficiency and low in production cost.

Background

The drill bit grinder is a small tool grinder for grinding drill bits industrially, and is used for grinding new drill bits after being worn, so that the drill bits can be repeatedly ground for use, and the service life of the drill bits is prolonged; the cutter can grind the cutting edges of various common twist drills due to different functions, so that the aim of repairing the drill as new is fulfilled, and the cutter is an indispensable good helper for repairing the drill; however, the existing drill bit grinding machine is large, extremely complex in structure and complex in operation, and requires operators to have certain grinding technology, otherwise, the grinding precision is not well controlled; various accessories are required to be arranged for grinding different drill bits, the accessories are high in price and high in relative production cost, and the requirements for small-sized machining operation are not met.

In view of the above, the present inventors have made extensive studies and research efforts to develop and design the present invention, in view of the shortcomings and inconveniences of the above-mentioned drill grinding apparatus.

Disclosure of Invention

The invention aims to provide a drill bit grinding machine, wherein an included angle between a grinding wheel and a drill bit is adjusted before grinding to determine a grinding angle, the grinding precision of the cutting edge of the drill bit is high in the grinding process, the operation is simple and easy to learn, the grinding efficiency is improved, and the grinding machine is simple and compact in structure and low in production cost.

In order to achieve the above purpose, the solution of the invention is:

a drill bit grinder is characterized in that: comprises a workbench, a drill rod collet chuck, a grinding wheel seat and a motor, wherein the drill rod collet chuck, the grinding wheel seat and the motor are arranged on the workbench;

the drill bit barrel clamp is provided with a fixed seat, and a drill bit barrel, a spring barrel clamp, a sleeve front end locking nut, a ball sleeve and a drill bit barrel spring which are arranged on the fixed seat; the drill bit rod sleeve penetrates through the ball sleeve, and the front end and the rear end of the drill bit rod sleeve respectively extend out of the two supporting vertical plates; the spring collet chuck is assembled inside the front end of the drill bit sleeve, and the locking nut at the front end of the sleeve is locked at the front end of the drill bit sleeve to limit the spring collet chuck from being pulled out of the drill bit sleeve; the drill bit rod sleeve spring is sleeved outside the drill bit rod sleeve, and two ends of the drill bit rod sleeve spring respectively abut against the locking nut at the front end of the sleeve and the supporting vertical plate;

the grinding wheel seat is provided with a full ball turntable rotationally pivoted with the workbench and a balancing weight arranged on the full ball turntable, the motor is arranged on one side of the balancing weight, an output shaft of the motor extends out of the other side of the balancing weight, and the grinding wheel is arranged at the end part of the output shaft;

confirming the angle of the cutting edge of the drill bit, and rotating the balancing weight to adjust the included angle between the grinding wheel and the drill bit; selecting an adaptive spring cartridge clip according to the rod diameter of the drill bit and installing the spring cartridge clip into a drill bit rod sleeve; a drill bit to be ground is arranged on a drill bit rod collet chuck through a collet chuck, and a locking nut at the front end of the sleeve is locked; the motor drives the grinding wheel to rotate to grind the cutting edge of the drill bit.

The full-ball rotary table is provided with a supporting plate, a cutting edge angle dial is arranged on the supporting plate, the balancing weight and the cutting edge angle dial are arranged on the supporting plate in a staggered mode, the circle center of the cutting edge angle dial and the center of the full-ball rotary table are connected to the workbench in a rotating and pin mode through a bolt and a bearing, and one end of the balancing weight is locked on the workbench through a balancing weight positioning screw rod.

The full-bead rotary disc is provided with an O-shaped silica gel ring outside the bead, and a copper sleeve for limiting the parallel rotation of the two upper and lower rotary disc sheets is arranged between the two upper and lower rotary disc sheets of the full-bead rotary disc.

An angle pointer is arranged on one side of the cutting edge angle dial, and a straight line where the center of the angle pointer and the circle center of the cutting edge angle dial are located is perpendicular to the axis of the drill rod sleeve.

The straight line that balancing weight positioning screw and bolt are located is parallel with the telescopic axis of drill bit pole.

The bottom end of the counterweight positioning screw rod is sleeved with a spring and is in threaded connection with the bottom plate of the workbench through a nut; and one side of the balancing weight is provided with a grinding wheel rotating handle.

The range of the rod diameter of the drill bit to be ground is 3-20mm, and the drill bit rod with each rod diameter is a spring collet chuck with the same aperture.

And a cutting edge angle confirmation plate is arranged on one side of the workbench, and a plurality of cutting edge angle confirmation grooves with different angles are formed in the cutting edge angle confirmation plate.

The drill rod collet chuck is also provided with an angle plate, an angle plate rotation limiting pin and a sleeve rear end locking nut, the angle plate is sleeved at the rear end of the drill rod sleeve, and the sleeve rear end locking nut is locked at the rear end of the drill rod sleeve to limit the angle plate to be separated from the drill rod sleeve; the angle plate is provided with a first through hole for the drill rod sleeve to penetrate through and at least two angle grooves with the radian identical to that of the drill bit blade face, one end of the angle plate is locked on the supporting vertical plate by rotating the limiting pin, and the other end of the angle plate is inserted into one of the angle grooves.

The angle range of the blade surface of the drill bit to be ground is 30-150 degrees, and the rotation angle of the angle groove of the angle plate is 30-150 degrees.

The drill bit collet chuck is also provided with an indexing plate and an indexing plate positioning pin, the indexing plate is provided with a second through hole for the drill bit sleeve to pass through and a positioning pin hole extending from the outer wall of the indexing plate to the center of the second through hole, and the indexing plate is sleeved on the drill bit sleeve and is positioned between the angle plate and the locking nut at the rear end of the sleeve; the positioning pin of the dividing plate penetrates through the positioning pin hole to rotate and abut against the outer wall of the drill rod sleeve.

The dividing plate is provided with a through groove communicated with the positioning pin hole, a balance block is arranged in the through groove, and the balance block is provided with a propping surface tightly attached to the outer wall of the drill bit rod sleeve and a propping groove for propping the positioning pin of the dividing plate.

Two, three, four or six positioning pin holes are uniformly arranged on the circumference of the dividing plate.

The drill bit collet chuck is also provided with a fine adjustment screw and a fine adjustment screw spring; the fine tuning screw rod is sleeved with the fine tuning screw rod through a spring, and one end of the fine tuning screw rod is locked on the supporting vertical plate and abuts against one side of the angle plate.

A sliding mechanism is arranged between the drill rod collet chuck and the workbench, the sliding mechanism is provided with a sliding rail fixedly locked on the workbench and a sliding block fixedly locked below the fixed seat, and the sliding block is provided with a sliding groove reversely buckled on the sliding rail; the fixing seat is provided with a screw hole, and a positioning screw rod is locked in the screw hole and the end part of the positioning screw rod abuts against the top surface of the sliding rail.

The top surface of the slide rail is provided with a plurality of positioning grooves for supporting and pulling the positioning screw rods, and the fixed seat is provided with a drill rod barrel clamping handle for pushing the drill rod barrel to clamp on the slide rail to slide.

And one side of the slide rail, which is close to the grinding wheel, is provided with a baffle plate for resisting grinding waste.

The drill bit grinding machine also comprises a fixed-length limiting rod for limiting the length of the drill bit extending out of the drill bit collet chuck, the workbench is provided with a through hole for the fixed-length limiting rod to pass through, a first magnet is arranged below the through hole of the workbench, and a second magnet which is magnetically attracted with the first magnet is arranged at the bottom end of the fixed-length limiting rod; the top end of the fixed-length limiting rod is provided with a red ball part.

The fixing base is provided with a square handle pressing structure for clamping a square handle drill rod, the square handle pressing structure is provided with a flat plate extending outwards from the bottom of the fixing base, two convex parts extending outwards from two supporting vertical plates, two locking bolts and two pressing gaskets, each convex part is provided with a lock hole, the locking bolts are locked in the lock holes, and the pressing gaskets are fixed at one ends of the locking bolts penetrating out of the lock holes.

The drill bit grinding machine also comprises an illuminating lamp arranged beside the drill bit rod collet chuck.

The drill bit grinder is also provided with a drawer provided with different collet chucks.

After the structure is adopted, when the drill bit grinding machine grinds the drill bit, an operator firstly confirms the cutting edge angle of the drill bit and rotates the balancing weight to adjust the included angle between the grinding wheel and the drill bit; selecting an adaptive spring cartridge clip according to the rod diameter of the drill bit and installing the spring cartridge clip into a drill bit rod sleeve; a drill bit to be ground is arranged on a drill bit rod collet chuck through a collet chuck, and a locking nut at the front end of the sleeve is locked; the motor drives the grinding wheel to rotate to grind the cutting edge of the drill bit; the included angle between the grinding wheel and the drill bit is adjusted before grinding, the grinding angle is determined, the grinding precision of the cutting edge of the drill bit is high in the grinding process, the operation is simple and easy to learn, the grinding efficiency is improved, and the grinding machine is simple and compact in structure, small in size and low in production cost; the drill bit grinder provided by the invention can also be suitable for grinding of carving tools, and is wider in application range.

Drawings

FIG. 1 is a schematic view of the structure of the drill bit grinder of the present invention;

FIG. 2 is a partially exploded schematic view of the drill bit grinder of the present invention;

FIG. 3 is an exploded view of a wheel head of the drill grinder of the present invention;

FIG. 4 is a partial cross-sectional view of the drill bit grinder of the present invention;

FIG. 5 is an exploded view of the drill bit collet of the drill bit grinder of the present invention;

FIG. 6 is a schematic front view of the angle dial of the drill bit grinder of the present invention;

FIG. 7 is a schematic front view of an edge angle confirmation plate of the drill grinder of the present invention;

FIG. 8 is a schematic front view of a first angle plate of the drill grinder of the present invention;

FIG. 9 is a schematic front view of a second angle plate of the drill grinder of the present invention;

FIG. 10 is a schematic front view of a third angle plate of the drill grinder of the present invention;

FIG. 11 is a schematic front view of a first indexing plate of the drill grinding machine of the present invention;

FIG. 12 is a schematic front view of a second indexing plate of the drill grinder of the present invention;

FIG. 13 is a schematic front view of a third indexing plate of the drill grinder of the present invention;

FIG. 14 is a schematic front view of a fourth indexing plate of the drill grinder of the present invention;

FIG. 15 is an exploded view of the combination of the indexing plate, the counterbalance and the indexing plate locating pin of the drill bit grinding machine of the present invention;

FIG. 16 is a schematic view showing the combination of the indexing plate, the balance weight and the positioning pin of the indexing plate of the drill grinder of the present invention.

Description of the symbols

Drill rod barrel clamp 1 grinding wheel 2 of workbench 10

Grinding wheel seat 3 motor 4 fixing seat 11

Front end locking nut 14 of drill bit sleeve 12 spring collet chuck 13 sleeve

Ball sleeve 15 bit shaft sleeve spring 16 supports riser 111

Supporting plate 311 of full-ball turntable 31, balancing weight 32

Bolt 312 bearing 313 of knife angle dial 33

Counterweight block positioning screw 321O-shaped silica gel ring 314

Angle pointer 34 spring 322 nut 323

Grinding wheel rotating handle 35 edge angle confirmation board 5

Blade angle confirmation groove 51 angle plate 17 angle plate rotation stopper pin 171

Sleeve back end locknut 172 angular groove 173 index plate 18

Fine adjustment screw 19 of positioning pin hole 182 of positioning pin 181 of indexing plate

Fine-tuning screw spring 191, slide rail 61, slide block 62, slide groove 63

Positioning screw 64 positioning slot 611 drill bit rod collet handle 65

Baffle 66 fixed length gag lever post 7 flat plate 112

Boss 113 and lock bolt 114 hold down washer 115

8 drawer 9 through grooves 183 of illuminating lamp

The counterweight 184 abuts the groove 186 against the abutment surface 185.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.

Referring to fig. 1 to 14, the present invention discloses a drill grinder, which comprises a worktable 10, a drill rod collet 1 disposed on the worktable 10, a grinding wheel 2, a grinding wheel base 3 and a motor 4;

the drill bit collet chuck 1 is provided with a fixed seat 11, a drill bit sleeve 12 arranged on the fixed seat 11, a spring collet chuck 13, a sleeve front end locking nut 14, a ball sleeve 15 and a drill bit sleeve spring 16; the fixed seat 11 is provided with two supporting vertical plates 111 for erecting a ball sleeve 15, the drill bit rod sleeve 12 penetrates through the ball sleeve 15, and the front end and the rear end of the drill bit rod sleeve respectively extend out of the two supporting vertical plates 111; the collet chuck 13 is assembled in the front end of the drill bit sleeve 12, and the sleeve front end locking nut 14 is locked at the front end of the drill bit sleeve 12 to limit the collet chuck 13 from being pulled out of the drill bit sleeve 12; the drill rod sleeve spring 16 is sleeved outside the drill rod sleeve 12, and two ends of the drill rod sleeve spring 16 respectively abut against the locking nut 14 at the front end of the sleeve and the supporting vertical plate 111;

the grinding wheel seat 3 is provided with a full ball turntable 31 rotationally pivoted with the workbench 10 and a balancing weight 32 arranged on the full ball turntable 31, the motor 4 is arranged on one side of the balancing weight 32, an output shaft of the motor 4 extends out of the other side of the balancing weight 32, and the grinding wheel 2 is arranged at the end part of the output shaft;

confirming the angle of the cutting edge of the drill bit, and rotating the balancing weight 32 to adjust the included angle between the grinding wheel 2 and the drill bit; selecting an adaptive collet chuck 13 according to the rod diameter of the drill bit and installing the collet chuck into the drill bit sleeve 12; a drill bit to be ground is loaded on a drill bit collet chuck 12 through a collet chuck 13, and then a locking nut 14 at the front end of a sleeve is locked; the motor 4 drives the grinding wheel 2 to rotate to grind the blade of the drill bit.

When the drill bit grinding machine grinds the drill bit, an operator firstly confirms the angle of the cutting edge of the drill bit and rotates the balancing weight 32 to adjust the included angle between the grinding wheel 2 and the drill bit; selecting an adaptive collet chuck 13 according to the rod diameter of the drill bit and installing the collet chuck into a drill bit sleeve 12; a drill bit to be ground is loaded on a drill bit collet chuck 12 through a collet chuck 13, and then a locking nut 14 at the front end of a sleeve is locked; the motor 4 drives the grinding wheel 2 to rotate to grind the cutting edge of the drill bit; the included angle between the grinding wheel 2 and the drill bit is adjusted before grinding, the grinding angle is determined, the grinding precision of the cutting edge of the drill bit is high in the grinding process, the operation is simple and easy to learn, the grinding efficiency is improved, and the grinding machine is simple and compact in structure and low in production cost; the weight balancing block can weigh 2.6 jin and can effectively play a role in damping; a switch electrically connected with the motor is arranged on the workbench 10; the collet chuck is a common accessory in the market, is low in price and is convenient to equip accessories; the drill bit grinder can also be suitable for grinding the carving cutter, and has wider application range.

The full-ball turntable 31 is provided with a support plate 311, the support plate 311 is provided with a cutting edge angle dial 33, the balancing weight 32 and the cutting edge angle dial 33 are arranged on the support plate 311 in a staggered mode, the circle center of the cutting edge angle dial 33 and the center of the full-ball turntable 31 are rotatably pivoted on the workbench 10 through a bolt 312 and a bearing 313, and one end of the balancing weight 32 is locked on the workbench 10 through a balancing weight positioning screw 321.

The full-bead rotary disc 31 is provided with the O-shaped silica gel ring 314 outside the bead, so that the lubricating oil can be prevented from leaking and the grinding scraps can be prevented from falling into the ball to cause unsmooth rotation; a copper sleeve for limiting the parallel rotation of the two upper and lower turnplate pieces is arranged between the two upper and lower turnplate pieces of the full-ball turnplate 314; the full ball turntable 31 can rotate more smoothly.

An angle pointer 34 is arranged on one side of the knife edge angle dial 33, and a straight line where the center of the angle pointer 34 and the circle center of the knife edge angle dial 33 are located is vertical to the axis of the drill bit sleeve 12; the straight line where the counterweight positioning screw 321 and the bolt 312 are located is parallel to the axis of the drill bit sleeve 12; the included angle between the grinding wheel 2 and the drill bit sleeve 12 is convenient to adjust; moreover, the grinding wheel 2 and the full ball turntable 31 are eccentrically arranged, when the full ball turntable 31 is rotated, the adjustable range of the distance between the grinding wheel 2 and the drill bit rod sleeve 12 is larger, and drill bits with different lengths can be ground.

The bottom end of the counterweight block positioning screw rod 321 is sleeved with a spring 322 and is in threaded connection with the bottom plate of the workbench 10 through a nut 323, and the counterweight block 31 can be firmly locked on the workbench 10; and one side of the balancing weight 32 is provided with a grinding wheel rotating handle 35; the operator holds the wheel turning handle 35 to facilitate turning the wheel head 3.

The range of the rod diameter of the drill bit to be ground is 3-20mm, and the drill bit rod with each rod diameter is a collet chuck 13 with the same aperture; the spring collet chuck 13 with different apertures can be used for clamping drill bits with different rod diameters, so that the drill bits with different rod diameters can be ground, and the applicability is stronger.

The invention is characterized in that a blade angle confirming plate 5 is arranged on one side of the worktable 10, and a plurality of blade angle confirming grooves 51 with different angles are arranged on the blade angle confirming plate 5; the knife edge angle can be conveniently confirmed by operators, and the grinding is more convenient.

The drill rod collet 2 is also provided with an angle plate 17, an angle plate rotation limiting pin 171 and a sleeve rear end locking nut 172, wherein the angle plate 17 is sleeved at the rear end of the drill rod sleeve 12, and the sleeve rear end locking nut 172 is locked at the rear end of the drill rod sleeve 12 to limit the angle plate 17 to be separated from the drill rod sleeve 12; the angle plate 17 is provided with a first through hole for the drill rod sleeve 12 to pass through and at least two angle grooves 173 with the same radian as the drill bit blade face, one end of the angle plate rotating limiting pin 171 is locked on the supporting vertical plate 111, and the other end is inserted into one of the angle grooves 173; in the grinding process, the drill bit rod sleeve is rotated, so that the angle plate rotates the limiting pin to move back and forth in the angle groove, and the drill bit can repeatedly rotate along the angle groove rotating angle to finish grinding of the cambered surface blade.

The range of the angle of the blade surface of the drill bit to be ground is 30-150 degrees, and the rotation angle of the angle groove of the angle plate is 30-150 degrees.

The drill rod collet 1 of the invention also has an indexing plate 18 and an indexing plate locating pin 181, the indexing plate 18 is provided with a second through hole for the drill rod sleeve 12 to pass through and a locating pin hole 182 extending from the outer wall of the indexing plate 18 to the center of the second through hole, the indexing plate 18 is sleeved on the drill rod sleeve 12 and is positioned between the angle plate 17 and the sleeve rear end locking nut 172; the indexing plate positioning pin 181 penetrates through the positioning pin hole 182 and is rotated to abut against the outer wall of the drill rod sleeve 12; the relative positions of the indexing plate 18 and the bit sleeve 12 may be limited so that the length of the bit projecting beyond the bit sleeve 12 is consistent, thereby maintaining a consistent depth of grind for each blade.

The indexing plate 18 is provided with a through groove 183 communicated with a positioning pin hole 182, a balance block 184 is arranged in the through groove 183, the balance block 184 is provided with an abutting surface 185 tightly abutted to the outer wall of a drill rod sleeve and an abutting groove 186 for abutting the indexing plate positioning pin 181, and the central line of the through groove 183, the central line of the balance block 184 and the central line of the indexing plate positioning pin 181 are positioned on the same straight line; the positioning pin 181 of the indexing plate is tightly pressed against the outer wall of the bit sleeve 12 through the balance block 184 to limit the relative rotation between the indexing plate 18 and the bit sleeve 12, so that when the indexing plate is locked, the indexing plate is not biased to a single side due to the clearance between the indexing plate 18 and the bit sleeve 12, thereby influencing the clearance between the angle plate 17 locked on the indexing plate 18 and the tail end of the bit sleeve 12.

Two, three, four or six positioning pin holes 182 are uniformly arranged on the circumference of the dividing plate 18; the indexing plate locating pins 181 and locating pin holes 182 cooperate to uniformly grind each blade.

The drill rod collet 1 of the invention is also provided with a fine adjustment screw 19 and a fine adjustment screw spring 191; the fine adjustment screw spring 191 is sleeved on the fine adjustment screw 19, and one end of the fine adjustment screw 19 is locked on the support vertical plate 111 and abuts against one side of the angle plate 17; before or after grinding, the fine adjustment screw 19 can be rotated clockwise, the fine adjustment screw 19 compresses a fine adjustment screw spring 191 and pushes an angle plate 17 to move backwards, the drill bit rod sleeve 12 moves backwards to compress a drill bit rod sleeve spring 16 and can drive the drill bit to move backwards so as to push the cutting edge of the drill bit away from the grinding wheel surface; when the grinding is to be performed, the fine adjustment screw 19 can be rotated counterclockwise, the fine adjustment screw 19 can be driven to move forward by the elastic force of the fine adjustment screw spring 191, the angle plate 17 is not abutted by the fine adjustment screw 19, and the drill rod sleeve 12 can be driven to move forward by the elastic force of the drill rod sleeve spring 16, so that the cutting edge of the drill bit slowly approaches the grinding wheel surface to start grinding the cutting edge.

A sliding mechanism is arranged between the drill rod collet chuck 1 and the workbench 10, the sliding mechanism is provided with a sliding rail 61 fixedly locked on the workbench 10 and a sliding block 62 fixedly locked below the fixed seat 11, and the sliding block 62 is provided with a sliding groove 63 reversely buckled on the sliding rail 61; the sliding mechanism can adjust the position relation between the drill rod collet 1 and the grinding wheel 2, so that the adjustment position between the drill and the grinding wheel 2 is wider and the use is more convenient; the fixed seat 11 is provided with a screw hole 63, and a positioning screw 64 is locked in the screw hole 63 and the end part of the positioning screw abuts against the top surface of the slide rail 61; the positioning screw 64 can fix the fixed seat 11 on the working platform 10.

The top surface of the slide rail 61 is provided with a plurality of positioning grooves 611 for the positioning screw 64 to push against, and when the positioning screw 64 pushes against the positioning grooves 611, the fixed structure of the slide block 62 and the slide rail 61 can be firmer; the fixed seat 11 is provided with a drill rod collet chuck handle 65 for pushing the drill rod collet chuck 1 to slide on the slide rail 61; the drill rod collet 1 is more convenient to push.

One side of the slide rail 61 close to the grinding wheel 2 is provided with a baffle 66 for resisting grinding waste; the grinding waste is prevented from falling between the sliding rail 61 and the sliding block 62 to influence the normal sliding motion of the sliding rail 61 and the sliding block 62.

The drill bit grinding machine also comprises a fixed-length limiting rod 7 for limiting the length of a drill bit extending out of the drill bit collet chuck 1, a through hole for the fixed-length limiting rod 7 to pass through is formed in the workbench 10, a first magnet is arranged below the through hole of the workbench 10, and a second magnet which is magnetically attracted with the first magnet is arranged at the bottom end of the fixed-length limiting rod 7; the top end of the fixed-length limiting rod 7 is provided with a red ball part; the fixed-length limiting rod 7 is positioned on one side of the angle pointer 34; when the length of the drill bit extending out of the drill bit collet chuck 1 is limited, the fixed-length limiting rod 7 can be pulled up, the second magnet at the bottom end of the fixed-length limiting rod 7 is attracted to the first magnet under the workbench 10 in a magnetic mode, the fixed-length limiting rod 7 can be kept to stand on the workbench 10, and the length of the drill bit extending out of the drill bit collet chuck 12 can be limited conveniently; when the fixed-length limiting rod 7 is not used, the fixed-length limiting rod 7 can be pressed, so that the first magnet and the second magnet are separated, and the fixed-length limiting rod 7 falls into the workbench 10.

The fixed seat 11 is provided with a square handle pressing structure for clamping a square handle drill rod, the square handle pressing structure is provided with a flat plate 112 extending outwards from the bottom of the fixed seat 11, two convex parts 113 extending outwards from two supporting vertical plates 111, two locking bolts 114 and two pressing gaskets 115, each convex part 113 is provided with a lock hole, the locking bolts 114 are locked in the lock holes, and the pressing gaskets 115 are fixed at one ends of the locking bolts 114, which penetrate out of the lock holes; the square shank drill rod is placed on the flat plate 112, the locking bolt 114 is rotated, so that the pressing gasket 115 firmly presses the square shank drill rod on the fixing seat 11, the square shank drill can be ground, and the application range is wider.

The drill bit grinding machine also comprises an illuminating lamp 8 arranged beside the drill bit rod collet chuck 1; the illumination is improved, and the grinding is more convenient.

The drill bit grinder of the invention is also provided with a drawer 9 provided with different collet chucks 13, the drill bit grinder can be provided with different collet chucks 3, and the drawer can conveniently contain the collet chucks 13.

The grinding wheel 2 is used as a jade grinding wheel, so that the grinding area is larger, the service life is long, the price is low, and the production cost of the drill bit grinding machine is reduced.

The invention relates to an operation method of a drill grinder when grinding a straight blade of a two-blade drill, which comprises the following steps:

1. confirming the cutting edge angle of the drill to be ground on a cutting edge angle confirmation plate;

2. holding a grinding wheel rotating handle and rotating a grinding wheel seat according to the angle of the cutting edge, wherein an angle pointer points to a corresponding angle scale on the cutting edge angle dial, and locking a balancing weight positioning screw rod to adjust an included angle between the grinding wheel and a drill bit rod barrel clamp;

3. selecting an adaptive spring cartridge clip according to the rod diameter of the drill bit and installing the spring cartridge clip into a drill bit rod sleeve; a drill bit to be ground is arranged on a drill bit rod collet chuck through a collet chuck;

4. pulling up the fixed-length limiting rod, and adjusting the length of the drill bit extending out of the drill bit sleeve;

5. holding a drill rod barrel clamp handle to push the fixed seat to slide on the sliding rail, so that a space is reserved between the drill bit and the grinding surface of the grinding wheel, and locking a positioning screw to clamp the drill rod barrel on the workbench;

6. rotating the fine adjustment screw rod clockwise to push the cutting edge of the drill bit away from the grinding wheel surface; the grinding wheel can be driven to rotate by opening a motor switch; rotating the fine adjustment screw rod anticlockwise to enable the cutting edge of the drill bit to slowly approach the grinding wheel surface to start grinding, and finishing grinding of the cutting edge;

7. when another cutting edge needs to be ground, the dividing plate can be pulled out and rotated for 180 degrees; then the cutting edge of the drill bit slowly approaches the grinding wheel surface to start grinding, and grinding of the other cutting edge is completed;

8. sequentially grinding all the cutting edges, and finally, clockwise rotating the fine adjustment screw to push the cutting edges of the drill away from the grinding wheel surface; and (5) turning off the motor, stopping the rotation of the grinding wheel and finishing the grinding of the straight-face blade.

The invention relates to an operation method of a drill grinder when grinding cambered surface edges of a two-edge drill, which comprises the following steps:

2. holding a grinding wheel rotating handle and rotating a grinding wheel seat according to the angle of the cutting edge, pointing an angle pointer to a corresponding angle scale on the cutting edge angle dial plate, and locking a positioning screw rod of a balancing weight to adjust an included angle between the grinding wheel and a drill rod barrel clamp;

3. selecting an adaptive spring cartridge clip according to the rod diameter of the drill bit and installing the spring cartridge clip into the drill bit rod sleeve; a drill bit to be ground is arranged on a drill bit collet chuck through the collet chuck;

4. pulling up the fixed-length limiting rod, and adjusting the length of the drill bit extending out of the drill bit rod sleeve;

6. selecting an angle plate and an indexing plate respectively according to the radian and the number of blade surfaces of the blades of the drill bit to be ground, inserting a rotating limiting pin of the angle plate into one angle groove, and locking a positioning pin of the indexing plate;

7. rotating the fine adjustment screw rod clockwise to push the cutting edge of the drill bit away from the grinding wheel surface; the grinding wheel can be driven to rotate by opening a motor switch; the fine adjustment screw rod is rotated anticlockwise, so that the cutting edge of the drill bit slowly approaches to the grinding wheel surface to start grinding, the indexing plate is rotated to enable the angle plate to rotate the limiting pin to reciprocate in the angle groove, and the drill bit can repeatedly rotate along the rotation angle of the angle groove to finish grinding of the cutting edge;

8. the dividing plate is pulled out outwards and rotated for 180 degrees, the angle plate rotation limiting pin is inserted into the other angle groove, and the angle plate rotation limiting pin repeatedly rotates the dividing plate up and down along the angle groove to finish grinding of the other cutting edge;

9. sequentially grinding all the cutting edges, and finally, clockwise rotating the fine adjustment screw to push the cutting edges of the drill away from the grinding wheel surface; and (5) turning off the motor, stopping the grinding wheel and finishing grinding.

The invention can be provided with different angle plates, each angle plate is provided with an angle groove with different rotation angles, so that drills or cutters with different arc blade angle surfaces can be ground by replacing different angle plates; for example, when a 30 °, 45 ° or 60 ° arc blade facet needs to be ground, an angle plate with a rotation angle of the angle groove of 30 °, 45 ° or 60 ° may be selected; moreover, the invention can be provided with different dividing plates, and each dividing plate is uniformly provided with two, three, four or six positioning pin holes on the circumference, so that drills or cutters with different numbers of blades can be ground by replacing different angle plates.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications thereof by those skilled in the art should be considered as not departing from the scope of the present invention.

Claims

1. A drill bit grinder is characterized in that: comprises a workbench, a drill rod collet chuck, a grinding wheel seat and a motor, wherein the drill rod collet chuck, the grinding wheel seat and the motor are arranged on the workbench;

the drill bit barrel clamp is provided with a fixed seat, a drill bit barrel, a spring barrel clamp, a locking nut at the front end of the barrel, a ball sleeve and a drill bit barrel spring, wherein the drill bit barrel sleeve, the spring barrel clamp, the ball sleeve and the drill bit barrel spring are arranged on the fixed seat; the drill bit rod sleeve penetrates through the ball sleeve, and the front end and the rear end of the drill bit rod sleeve respectively extend out of the two supporting vertical plates; the spring collet chuck is assembled inside the front end of the drill bit sleeve, and the locking nut at the front end of the sleeve is locked at the front end of the drill bit sleeve to limit the spring collet chuck from being pulled out of the drill bit sleeve; the drill bit rod sleeve spring is sleeved outside the drill bit rod sleeve, and two ends of the drill bit rod sleeve spring respectively abut against the locking nut at the front end of the sleeve and the supporting vertical plate; the drill rod collet chuck is also provided with an angle plate, an angle plate rotation limiting pin and a sleeve rear end locking nut, the angle plate is sleeved at the rear end of the drill rod sleeve, and the sleeve rear end locking nut is locked at the rear end of the drill rod sleeve to limit the angle plate to be separated from the drill rod sleeve; the angle plate is provided with a first through hole for the drill rod sleeve to pass through and at least two angle grooves with the radian identical to that of the drill bit blade surface, one end of the angle plate rotating the limiting pin is locked on the supporting vertical plate, and the other end of the angle plate is inserted in one of the angle grooves; the drill bit collet chuck is also provided with a fine adjustment screw and a fine adjustment screw spring; the fine adjustment screw rod is sleeved on the fine adjustment screw rod in a spring manner, and one end of the fine adjustment screw rod is locked on the support vertical plate and abuts against one side of the angle plate;

the grinding wheel seat is provided with a full ball turntable rotationally pivoted with the workbench and a balancing weight arranged on the full ball turntable, the motor is arranged on one side of the balancing weight, an output shaft of the motor extends out of the other side of the balancing weight, and the grinding wheel is arranged at the end part of the output shaft; the full-ball turntable is provided with a supporting plate, the supporting plate is provided with a blade angle dial, the balancing weight and the blade angle dial are arranged on the supporting plate in a staggered mode, the circle center of the blade angle dial and the center of the full-ball turntable are rotatably pivoted on the workbench through a bolt and a bearing, and one end of the balancing weight is locked on the workbench through a balancing weight positioning screw rod;

2. The drill grinder of claim 1, wherein: the full-bead rotary disc is provided with an O-shaped silica gel ring outside the bead, and a copper sleeve for limiting the parallel rotation of the two upper and lower rotary disc sheets is arranged between the two upper and lower rotary disc sheets of the full-bead rotary disc.

3. The drill grinder of claim 2, wherein: an angle pointer is arranged on one side of the knife angle dial, and a straight line where the center of the angle pointer and the circle center of the knife angle dial are located is perpendicular to the axis of the drill bit sleeve.

4. The drill bit grinder of claim 3, wherein: the straight line that balancing weight positioning screw and bolt are located is parallel with the telescopic axis of drill bit pole.

5. The drill grinder of claim 1, wherein: the bottom end of the counterweight positioning screw rod is sleeved with a spring and is in threaded connection with the bottom plate of the workbench through a nut; and one side of the balancing weight is provided with a grinding wheel rotating handle.

6. The drill grinder of claim 1, wherein: the range of the rod diameter of the drill bit to be ground is 3-20mm, and the drill bit rod with each rod diameter is a spring collet chuck with the same aperture.

7. The drill grinder of claim 1, wherein: and a cutting edge angle confirmation plate is arranged on one side of the workbench, and a plurality of cutting edge angle confirmation grooves with different angles are formed in the cutting edge angle confirmation plate.

8. The drill grinder of claim 1, wherein: the angle range of the blade surface of the drill bit to be ground is 30-150 degrees, and the rotation angle of the angle groove of the angle plate is 30-150 degrees.

9. The drill grinder of claim 1, wherein: the drill bit collet chuck is also provided with an indexing plate and an indexing plate positioning pin, the indexing plate is provided with a second through hole for the drill bit sleeve to pass through and a positioning pin hole extending from the outer wall of the indexing plate to the center of the second through hole, and the indexing plate is sleeved on the drill bit sleeve and is positioned between the angle plate and the locking nut at the rear end of the sleeve; the positioning pin of the dividing plate penetrates through the positioning pin hole to rotate and abut against the outer wall of the drill rod sleeve.

10. The drill grinder of claim 9, wherein: the dividing plate is provided with a through groove communicated with the positioning pin hole, a balance block is arranged in the through groove, and the balance block is provided with a propping surface tightly attached to the outer wall of the drill bit rod sleeve and a propping groove for propping the positioning pin of the dividing plate.

11. The drill grinder of claim 9, wherein: two, three, four or six positioning pin holes are uniformly formed in the circumference of the dividing plate.

12. The drill grinder of claim 1, wherein: a sliding mechanism is arranged between the drill rod collet chuck and the workbench, the sliding mechanism is provided with a sliding rail fixedly locked on the workbench and a sliding block fixedly locked below the fixed seat, and the sliding block is provided with a sliding groove reversely buckled on the sliding rail; the fixing seat is provided with a screw hole, and a positioning screw rod is locked in the screw hole and the end part of the positioning screw rod abuts against the top surface of the sliding rail.

13. The drill grinder of claim 12, wherein: the top surface of the slide rail is provided with a plurality of positioning grooves for supporting the positioning screws, and the fixed seat is provided with a drill rod barrel clamp handle for pushing the drill rod barrel to clamp on the slide rail to slide.

14. The drill bit grinder of claim 12, wherein: and one side of the slide rail, which is close to the grinding wheel, is provided with a baffle plate for resisting grinding waste.

15. The drill grinder of claim 1, wherein: the drill bit chuck is characterized by further comprising a fixed-length limiting rod for limiting the length of the drill bit extending out of the drill bit chuck, the workbench is provided with a through hole for the fixed-length limiting rod to pass through, a first magnet is arranged below the through hole of the workbench, and a second magnet which is magnetically attracted with the first magnet is arranged at the bottom end of the fixed-length limiting rod; the top end of the fixed-length limiting rod is provided with a red ball part.

16. The drill grinder of claim 1, wherein: the fixing base is provided with the square handle compact structure of centre gripping square handle drill rod, square handle compact structure has the fixing base bottom and outwards extends a flat board, by two outside protruding portions, two locking bolts and two pressure washers that extend of two supporting vertical plates, each the protruding portion sets up a lockhole, the locking bolt lock is located in the lockhole, and compresses tightly the washer and be fixed in locking bolt and wear out lockhole one end.

17. The drill grinder of claim 1, wherein: the device also comprises an illuminating lamp arranged beside the drill rod collet chuck.

18. The drill bit grinder of claim 1, wherein: drawers with different collet chucks are also provided.