CN2190002Y

CN2190002Y - Grinding machine for fluted twist drill

Info

Publication number: CN2190002Y
Application number: CN 93239727
Authority: CN
Inventors: 陈良浩; 薛菊芬
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-12-17
Filing date: 1993-12-17
Publication date: 1995-02-22
Anticipated expiration: 2003-12-17

Abstract

The utility model relates to a grinding machine of a fluted twist drill, which is attached to an ordinary sander. The utility model is composed of a bottom plate (1), a lower support base (2), an upper support base (3), a drill clamping mechanism (4), a drill axial movement stroke regulating mechanism (6), screws (5), handles (7), (9) and a spindle (8). The screws (5) are loosened for the upper support base and the lower support base to correspondingly rotate through an angle, and thus, the sharp angle of the drill is regulated. The operating handle (7) can drive the drill to rotate and to repeatedly move in axial direction. When a required back angle is grinded, the handle (9) is swung for driving the drill to move toward the sander. The utility model has the advantages of light weight, small size, convenient operation and no training for a user in advance. The utility model can be popularized and used in any machinery factories.

Description

Grinding machine for fluted twist drill

The utility model relates to the Sharpening device that a kind of sharpening spiral bit is used, and it is mounted in uses on the normal sands turbine, provides the emery wheel of rotation by abrasive machine, remaining all feed motion and adjust motion and all finished by the utility model.

In the prior art, a kind of known spiral bit grinding method is to be provided by special twist drill grinding ma-chine bed, and this cutter grinding machine structure is complicated, and cost is higher, only uses in cutlery measurer factory usually.In general machinery plant, repair shop and workshop, do not see the Sharpening device that is used for the sharpening spiral bit as yet, the sharpening of spiral bit is all carried out on abrasive machine by the hand-held drill bit of workman, this grinding method requires high to workman's technical merit, and sharpening efficiency is low, is difficult to grind expeditiously high-quality drill bit.

The purpose of this utility model is to design a kind of simple in structure, in light weight, easy to operate, and it is installed to the spiral bit Sharpening device that can carry out work on the normal sands turbine.

For achieving the above object, the utility model is by the following technical solutions: whole device comprises drill bit clamping part, feeding part and supporting and operation part, it by drill bit clamp mechanism (4), drill bit shaft to movement travel governor motion (6), axle (8), handle the drill bit radial feed handle (9), handle the handle (7) that drill bit rotated and did axially reciprocating, and upper bracket (3), undersetting (2), base plate compositions such as (1).Drill bit clamp mechanism (4) and drill bit shaft are unified into an integral body to movement travel governor motion (6) by master collet (4-4), and are fixed on the upper bracket (3); Handle (7) links with master collet (4-4); Upper bracket (3) is linked together by screw (5) with undersetting (2); Handle (9), axle (8) are installed in the undersetting (2); Undersetting (2) is fixed on the base plate (1); Base plate (1) directly is installed on the support plate of normal sands turbine this device is devoted oneself to work.

Swing handle (9) can make Sharpening device around axle (8) swing, to realize the feeding of drill bit to emery wheel.The pressure cylinder of adding (4-1) is arranged in the drill bit clamp mechanism (4), be loaded on two eccentric clamping pieces (4-2) of adding in the pressure cylinder (4-1) and three and compress pin (4-3), rotate add pressure cylinder (4-1) can be clamped in by the drill bit of sharpening in the master collet (4-4) two V-blocks (4-5) and (4-6) between.Drill bit shaft in movement travel governor motion (6), have relief angle adjustable ring (6-1), with the contacted cam bit of bossing (6-1-1) (6-2) of relief angle adjustable ring (6-1), adjust relief angle adjustable ring (6-1) thus the orientation make after cam bit (6-2) obtains certain inclination angle, turning handle (7) can make master collet (4-4) rotate, and make drill bit in turning over the process of each commentaries on classics, make identical axially reciprocating twice by the stroke that sets, thereby grind knife face behind the drill bit of helicoid form, obtain the relief angle that needs.

Advantage of the present utility model is: (1) is simple in structure, and is in light weight, and volume is little.During the drill bit of sharpening φ below 20 millimeters, its net weight is no more than 5 kilograms; When not considering decreased food, whole device all is no more than 140 millimeters in the size of three change in coordinate axis direction.(2) operation is very convenient, and is very low to the requirement of workman's technical merit, need not to carry out special technical training for this reason, easy to utilize.

Description of drawings is as follows:

Fig. 1 is an outside drawing of the present utility model;

Fig. 2 is the installation diagram of the utility model drill bit clamp mechanism (4);

Fig. 3 is the installation diagram of the utility model drill bit shaft to movement travel governor motion (6);

Fig. 4 is the front view of cam bit (6-2);

Fig. 5 is the vertical view of cam bit (6-2);

Fig. 6 is the side view of cam bit (6-2);

Fig. 7 is the expanded view of cam bit (6-2);

Fig. 8 is the cutaway view of relief angle adjustable ring (6-1);

Fig. 9 is the side view of undersetting (2).

Below in conjunction with description of drawings most preferred embodiment of the present utility model.

Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 9, drill bit clamp mechanism (4) and drill bit axially-movable governor motion (6) are connected into an integral body by master collet (4-4), and are welded on the upper bracket (3); Upper bracket (3) is linked together by screw (5) with undersetting (2), unclamp after the screw (5), can make upper bracket (3) and drill bit clamp mechanism (4) and drill bit shaft turn over an angle with respect to undersetting (2) to movement travel governor motion (6), this angle can be read from the scale on the perimeter surface of undersetting (2) garden, thereby obtains the sharp angle of drill bit.Handle (9) be installed on the screw (2-1) of undersetting (2) side or (2-4) in, screw (2-1) is positioned on the opposite both direction of base plate (1) with screw (2-4), with the variation of distance between the support plate that adapts to abrasive machine and the emery wheel.Axle (8) is installed in the carrying cylinder (2-2), is welded with rest pad (2-3) below the carrying cylinder (2-2), and rest pad (2-3) welds together with base plate (1).Handle (9) is upwards lifted, can make whole device and the drill bit that is held around axle (8) swing, thereby close to emery wheel, realize a feeding.The available gib headed bolt of base plate (1) is fixed on the support plate of abrasive machine.Base plate has a plurality of screws on (1), so that adjust its position on the abrasive machine support plate.

Referring to Fig. 2, drill bit clamp mechanism (4) is by adding pressure cylinder (4-1), being loaded on that two eccentric clamp clips (4-2) of adding in the pressure cylinder (4-1), three compress pin (4-3), master collet (4-4) and the vee-block (4-5), (4-6) that are installed in two mating grooves of master collet (4-4) inwall form symmetrically.By the drill bit of sharpening be installed in vee-block (4-5) and (4-6) between, drill bit should stretch out vee-block front end face 30 millimeter, when two vee-blocks are in upper and lower respectively, handle (7) is when being in extreme lower position, two blades of drill bit roughly are horizontal, at this moment, three location arrangements that compress pin (4-3) can guarantee two vee-blocks (4-5) and (4-6) be that the drill bit of 20 millimeters of φ 10～φ clamps reliably with diameter.

Referring to Fig. 3,4,5,6,7,8, drill bit shaft in movement travel governor motion (6), two pins (6-3) and the back-moving spring (6-4) that relief angle adjustable ring (6-1), cam bit (6-2) are arranged, can slide along the cam bit left side.The left end of relief angle adjustable ring (6-1) has bossing (6-1-1) to contact with the right side of cam bit (6-2), when the relief angle adjustable ring is in different azimuth, bossing (6-1-1) is different with cam bit (6-2) position contacting, can make cam bit (6-2) obtain different inclination angles.Cam bit (6-2) is the part of garden ring, half of its outer garden cylinder is made into male cone (strobilus masculinus) (6-2-1), half of interior garden cylinder become inner conical surface (6-2-2) by car, thereby makes cam bit (6-2) be in obliquity and the card phenomenon of not spraining between the inner surface of the outer surface of master collet (4-4) and sleeve (6-5).Two pins (6-3) at a distance of 180 ° of layouts are arranged in the master collet (4-4), and they can slide along the left side of cam bit (6-2).Adjust the orientation of relief angle adjustable ring (6-1), its bossing (6-1-1) is contacted with certain position of the right side of cam bit (6-2), make cam bit (6-2) have certain inclination angle, thereby form after the corresponding lift angle, the handle (7) of rotational fixation on master collet (4-4), master collet (4-4) and drill bit rotate thereupon and to the left motion, one of pin (6-3) slides along the left side of cam bit (6-2), and spring this moment (6-4) is compressed; When pin (6-3) slide along cam bit (6-2) finish after, spring (6-4) elongation, master collet (4-4) is return backward, another pin (6-3) is devoted oneself to work then, motion repeats.Like this, cross in the process of changeing and to make identical axially reciprocating twice by the stroke of adjusting at the drill bit revolution, thereby grind the back knife face of two blades.On the garden conical surface of relief angle adjustable ring (6-1) graduation mark is arranged, can read the angle that turns over when regulating,, can calculate the relief angle of drill bit according to this angle and bit diameter.

Claims

1, a kind of spiral bit Sharpening device, comprise the drill bit clamping part, feeding part and supporting and operation part, it is characterized in that, the above-mentioned part of this device is by drill bit clamp mechanism (4), drill bit shaft is to movement travel governor motion (6), axle (8), handle the handle (9) of drill bit radial feed, handle handle (7) and upper bracket (3) that drill bit rotated and did axially reciprocating, undersetting (2), base plate (1) is formed, drill bit clamp mechanism (4) and drill bit shaft are unified into an integral body to movement travel governor motion (6) by master collet (4-4), and be fixed on the upper bracket (3), handle (7) links with master collet (4-4), upper bracket (3) is linked together by screw (5) with undersetting (2), handle (9) and axle (8) are installed in the undersetting (2), undersetting (2) is fixed on the base plate (1), and base plate (1) directly is installed on the support plate of normal sands turbine this device is devoted oneself to work.

2, spiral bit Sharpening device according to claim 1, it is characterized in that, drill bit clamp mechanism (4) by add pressure cylinder (4-1), be loaded on the two eccentric clamp clips (4-2) that add in the pressure cylinder (4-1), three two vee-blocks (4-5), (4-6) that compress pin (4-3), master collet (4-4) and be loaded in the master collet (4-4) form, rotation adds pressure cylinder (4-1), can will place the drill bit between two vee-blocks (4-5), (4-6) to clamp.

3, spiral bit Sharpening device according to claim 1, it is characterized in that, drill bit shaft is in movement travel governor motion (6), relief angle adjustable ring (6-1) is arranged, cam bit (6-2), two pins (6-3) and the back-moving spring (6-4) that can slide along cam bit (6-2) left side, the bossing (6-1-1) of relief angle adjustable ring (6-1) contacts with the right side of cam bit (6-2), when relief angle adjustable ring (6-1) when being in different azimuth, its bossing (6-1-1) is different with the contact site of cam bit (6-2) right side, can make cam bit (6-2) have different inclinations angle, thereby make drill bit in turning over the process of each commentaries on classics, make axially reciprocating twice, to grind the relief angle that needs by the stroke that is provided with.

4, spiral bit Sharpening device according to claim 3, it is characterized in that, drill bit shaft is the part of garden ring to the cam bit (6-2) of movement travel governor motion (6), half of its outer garden cylinder is made into male cone (strobilus masculinus) (6-2-1), half of interior garden cylinder made inner conical surface (6-2-2), thereby do not sprain the card phenomenon when cam bit (6-2) is tilted between master collet (4-4) and sleeve (6-5).