CN106826485B - A kind of easy fluted drill angle blade milling machine - Google Patents

Abstract

The invention discloses a simple twist drill angle sharpening machine, which comprises a base plate, on which a height-adjustable support plate is installed, and a grinding wheel is rotatably installed on the front part of the support plate on the base plate; the support plate is rotatably installed There is a bracket plate, the front part of the bracket plate is rotated and installed with a front axle that can swing up and down, the front part of the front axle is fixedly fitted with a cam, the front end of the front axle is connected with a spring chuck with a Morse taper, and a drill bit is installed on the spring chuck; The rear part of the support plate is rotated and installed with a rear shaft, and a flexible shaft is connected between the front and rear shafts; the left and right rotation adjustment screw rods are respectively installed on the supporting plate on both sides of the front of the supporting plate, and the supporting plate is located on the supporting plate. The rear end is rotatably equipped with an advance and retreat adjustment screw rod, and the front end of the advance and retreat adjustment screw rod is fixed with double ball joints. The drill bit ground out by the invention has good effect and solves the problem that new trainees cannot grind twist drills.

Description

A Simple Twist Drill Angle Grinding Machine

technical field

The invention relates to the field of mechanical manufacturing, in particular to a simple twist drill angle sharpening machine.

Background technique

Twist drills on site in mechanical parts manufacturing companies need to be sharpened after they are blunt. Skilled workers will of course grind out good twist drills. For newcomers, it is very difficult. The two cutting edges are asymmetrical, which has a great impact on the machining accuracy of the hole. Some twist drills are ground into negative relief angles, so that the twist drill cannot undertake cutting work. A simple twist drill angle sharpening machine solves the problem of grinding twist drills. The cutting edge is symmetrical and sharp, and it is very convenient to use.

Contents of the invention

The purpose of the present invention is to provide a simple twist drill angle sharpening machine, which ends the situation of manual grinding of twist drills, solves the difficult problem of grinding twist drills for novices, and fills the gap of sharpening machines for twist drills on the market. blank. High efficiency, convenient adjustment, good grinding quality.

Technical scheme of the present invention is:

A simple twist drill angle sharpening machine is characterized in that: it includes a base plate on which a height-adjustable support plate is installed, and a grinding wheel is installed on the base plate in front of the support plate; the support plate is rotatably installed There is a bracket plate, and the front part of the bracket plate is rotated and installed with a front axle that can swing up and down. The front part of the front axle is fixed with a cam. The drill bit corresponding to the position; the rear shaft is installed in rotation at the rear of the support plate, a flexible shaft is connected between the front and rear shafts, and a hand wheel is installed at the rear end of the rear shaft; 1. Rotate the adjusting screw rod to the right, and the ends of the adjusting screw rod when turning left and right point to the end surfaces on both sides of the support plate respectively. The back end of the support plate is located on the support plate to rotate and install the advance and retreat adjustment screw rod, and the front end of the advance and retreat adjustment screw rod is fixed. There are double ball joints, and a U-shaped groove is arranged at the rear of the support plate, and the middle part of the double ball joints is clamped in the U-shaped groove.

A simple twist drill angle sharpening machine, characterized in that left and right oblique wedges are arranged between the supporting plate and the base plate, and horizontal threaded holes are respectively opened in the left and right oblique wedges, and the left and right oblique wedges The threaded holes in the threaded hole rotate in the opposite direction; it includes a threaded rod, and the threaded rod is provided with front and rear threaded sections corresponding to the threaded holes of the left and right wedges respectively; the threaded rods are screwed into the left and right wedges in turn.

A simple twist drill angle sharpening machine is characterized in that a plurality of tension springs are connected between the supporting plate and the bottom plate.

A simple twist drill angle sharpening machine is characterized in that: a motor is installed on the base plate in front of the supporting plate, and the grinding wheel is fixedly set on the output shaft of the motor.

A simple twist drill angle sharpening machine is characterized in that: the front shaft is rotatably installed in the front bearing seat, and the front bearing seat is rotatably installed on the bracket plate through a pin; Connected by Morse taper.

The bottom plate is welded by steel plates, and the upper part of the bottom plate is rotated with a bracket welded by steel plates. The grinding wheel is connected to the motor through keys, the motor is fixedly bolted to the bottom plate, and the bracket plate is set on the supporting plate through holes. The bracket plate can be opposite The pallet turns.

The nut plays the role of pressing the support plate on the supporting plate. The supporting plate and the bottom plate are connected by four tension springs, and there are left and right wedges between the supporting plate and the bottom plate. The screw passes through the left and right wedges, and the rotating screw can drive the left and right wedges to approach or move away at the same time. And then raise or lower supporting plate, just play the effect of raising or lowering support plate, so just can make drill bit and emery wheel have the height that adapts. Four extension springs make the supporting plate, the wedge, and the bottom plate tightly pressed firmly.

The left rotation adjustment screw rod and the right rotation adjustment screw rod use the screw nut principle to coordinate actions to adjust the rotation angle of the bracket plate relative to the supporting plate, and the advance and retreat adjustment screw rods adjust the forward and backward movement of the bracket plate relative to the supporting plate. The double ball joint is welded with the advance and retreat adjustment screw, and the double ball joint is placed in the U-shaped groove at the end of the bracket plate. When the double ball joint rotates with the advance and retreat adjustment screw and advances or retreats along the axis, the bracket plate is driven Forward or backward.

The rear axle is supported on the support plate through the bearing, and the hand wheel is fixedly connected to the end of the rear axle, and the rotation of the hand wheel can drive the rear axle to rotate. The rear end of the front axle is connected with the front end of the rear axle by a flexible shaft, and the front axle is supported in the front bearing seat by a bearing, and the front bearing seat is connected on the support plate by pins and pins, so that the front bearing seat swings around the pin. The cam is keyed on the front axle, and the front end of the front axle is fixedly connected with a spring chuck, and the spring chuck clamps the drill bit.

By adjusting the above-mentioned parts, the entire main cutting edge of the drill bit touches the grinding wheel horizontally, and is slightly higher than the center. When sharpening, turn the rotating hand wheel, and the drill bit can swing up and down while rotating, so that the drill bit can be on the surface of the grinding wheel. grind.

The rotation of the cam makes the front axle swing up and down, and then drives the front end of the front axle to swing up and down with the spring chuck and the spring chuck clamping the drill bit with a Morse taper.

The difference between the left and right oblique wedges is only that their threaded holes are different, wherein the threaded hole of one oblique wedge is left-handed, and the threaded hole of the other oblique wedge is right-handed.

The rotating screw is a screw with two sections of external threads, one of which is a left-handed thread and the other is a right-handed thread, which are screwed with two wedges respectively.

Advantages of the present invention:

The machine of the invention has simple and compact structure, is convenient for disassembly and maintenance, and has low cost. The result of the drill bit is good, which solves the difficulty that new students cannot grind twist drills.

Description of drawings

Figure 1 is a top view of the present invention.

Figure 2 is a side view of the present invention.

Figure 3 is a top view of the pallet.

Figure 4 is a side view of the pallet.

Figure 5 is a front view of the cam.

Figure 6 is a side view of the cam.

Figure 7 is a top view of the bottom plate.

Figure 8 is a side view of the bottom plate.

Figure 9 is a diagram of a rotating screw.

Figure 10 is a front view of the wedge.

Figure 11 is a top view of the wedge.

Figure 12 is a front view of the bracket.

Figure 13 is a top view of the bracket.

Figure 14 is a side view of the bracket.

Fig. 15 is a partial top view of the connection between the stent and the advancing and retreating wire.

Fig. 16 is a partial side view of the connection between the stent and the advancing and retreating wire.

Figure 17 is a front view of the connection between the front bearing seat and the pin.

Figure 18 is a side view of the front bearing block and pin.

Fig. 19 is a structural schematic view of the front axle and the spring chuck.

Detailed ways

See attached picture.

A simple twist drill angle sharpening machine, including the grinding wheel 22 connected to the motor 1 through a key, the motor 1 is fixedly bolted to the bottom plate 2, the support plate 3 is set on the support plate 18 through the hole, and the support plate 3 can be supported relatively Plate 18 rotates, and nut 17 plays the effect that support plate 3 is pressed on supporting plate 18. Supporting plate 18 is connected with four extension springs 19 with base plate 2, is provided with left and right oblique wedge 20 between supporting plate 18 and base plate 2, and screw rod 21 passes left and right oblique wedge 20, and rotating screw rod 21 can drive left, right, Right oblique wedge 20 approaches or moves away from simultaneously, and then raises or lowers supporting plate 18, just plays the effect of raising or lowering support plate 3, so just can make drill bit and emery wheel have the height that adapts. Four extension springs 19 make supporting plate, oblique wedge, base plate 2 three tightly pressed firmly. Left rotation adjustment wire 4 and right rotation adjustment screw mandrel 5 coordinate actions to regulate the angle of rotation of support plate 3 relative to supporting plate 18, and advance and retreat adjustment screw mandrel 6 regulates support plate 3 relative to the advance and retreat of supporting plate 18. The double ball joint 23 is welded with the advance and retreat adjustment screw 6, and the double ball joint 23 is placed in the U-shaped groove 24 at the end of the bracket plate 3. When the double ball joint 23 rotates with the advance and retreat adjustment screw 6, it advances along the axis or When retreating, it drives the support plate 3 to advance or retreat. Rear axle 8 is supported on the bracket plate 3 by bearing, and handwheel 7 is fixedly connected to the end of rear axle 8, and rotating handwheel 7 can drive rear axle 8 to rotate. The rear end of front axle 10 is connected with the front end of rear axle 8 by flexible shaft 9, and front axle 10 is supported in front bearing block 12 by bearing, and front bearing seat 12 is pinned on the bracket plate 3 by pin 11, pin 13, makes The front axle 10 can swing around pins 11 and 13 . Keyed cam 15 is connected on the front axle 10, and the front end of front axle 10 is fixedly connected with spring chuck 14, and spring chuck 14 clamps drill bit 16.

By adjusting the above-mentioned parts, the entire main cutting edge of the drill bit contacts the grinding wheel 22 horizontally, and is slightly higher than the center. surface sharpening.

The rotation of the cam 15 makes the front axle 10 swing up and down, and then drives the front end of the front axle 10 to be fixedly connected to the spring chuck 14 and the spring chuck 14 to clamp the drill bit 16 to swing up and down.

The difference of described left and right oblique wedges 20 is only that their threaded holes are different, wherein the threaded hole of one oblique wedge is left-handed, and the threaded hole of another oblique wedge is right-handed.

The rotating screw 21 is a screw with two sections of external threads, one of which is a left-handed thread and the other is a right-handed thread, which are screwed with two wedges respectively.

Claims (5)

1. a kind of easy fluted drill angle blade milling machine, it is characterised in that：Include bottom plate, is equipped on bottom plate adjustable for height Supporting plate, the front position that supporting plate is located on bottom plate are rotatablely equipped with grinding wheel；Supporting plate, supporting plate are rotatablely equipped on the supporting plate Front is rotatablely equipped with the front axle that can be swung up and down, and the front fixing sleeve of front axle is equipped with cam, and the front end of front axle is connected with bullet Spring clamp is equipped with drill bit corresponding with grinding wheel position on spring chuck；Supporting plate posterior rotation is equipped with rear axle, axle Between be connected with flexible axle, rear shaft rear end is equipped with handwheel；It is rotatablely equipped with respectively positioned at supporting plate front part sides position on supporting plate Adjusting lead screw is turned left and right, the end for turning left and right adjusting lead screw is respectively directed to supporting plate both sides of the face, is located at branch on supporting plate Frame plate rear end thereof is equipped with advance and retreat and adjusts lead screw, retreats and adjusts pair ball-joints that are fixedly arranged at the front end with of lead screw, and holder postlaminar part is equipped with U The intermediate position of type groove, double ball-joints is installed in U-type groove.

2. a kind of easy fluted drill angle blade milling machine according to claim 1, it is characterised in that：The supporting plate and bottom plate Between be equipped with left and right inclined wedge, have lateral threaded hole in left and right inclined wedge, the threaded hole rotation direction phase in left and right inclined wedge Instead；Include threaded rod, threaded rod is equipped with forward and backward thread segment corresponding with left and right inclined wedge threaded hole respectively；The threaded rod It screws in successively in left and right inclined wedge.

3. a kind of easy fluted drill angle blade milling machine according to claim 1 or 2, it is characterised in that：The supporting plate and Multiple tension springs are connected between bottom plate.

4. a kind of easy fluted drill angle blade milling machine according to claim 3, it is characterised in that：It is located at supporting plate on bottom plate Front position motor is installed, the grinding wheel is fixedly set on the output shaft of motor.

5. a kind of easy fluted drill angle blade milling machine according to claim 4, it is characterised in that：The front axis peace In front-end bearing pedestal, the front-end bearing pedestal is rotatably installed in by pin on supporting plate；Lead between the front axle and spring chuck Cross Morse's taper connection.