CN201419341Y

CN201419341Y - Drill grinding machine

Info

Publication number: CN201419341Y
Application number: CN2009200236926U
Authority: CN
Inventors: 王德才
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-03-18
Filing date: 2009-03-18
Publication date: 2010-03-10
Anticipated expiration: 2019-03-18

Abstract

The utility model discloses a drill grinding machine, which comprises a base, a grinding wheel mechanism, a longitudinal feed mechanism, a transverse feed mechanism and a length positioning mechanism;the grinding wheel mechanism is used for grinding drill bits; the longitudinal feed mechanism and the transverse feed mechanism can feed the grinding wheel mechanism; a rocker mechanism, which comprises a rocker and a drill bit-clamping mechanism, is arranged on the base, the rocker is provided with two supporting arms, the drill bit-clamping mechanism is assembled with the rocker, and is used toclamp a drill bit and adjust the back angle of the drill bit, the rocker mechanism is rockably connected with support arms arranged on the base through the supporting arms on both sides, and the rearend of the drill bit-clamping mechanism is provided with a dividing device; the length positioning mechanism is used to determine the extension quantity of the drill bit relative to the rocking center of the rocker; a headstock of the grinding wheel mechanism is rotatably connected with a cylinder arranged on a feed mechanism carriage; and both sides of the rocker are respectively provided with aset of balance mechanism which is used to balance the rocker mechanism. The utility model utilizes the mechanical mechanisms to shape the conical flank of the drill bit, the arc, vertex angle and back angle of the drill bit can be regulated, the chisel edge can be ground, and various drill bit forms can be ground.

Description

Drill grinder

Technical field

The utility model relates to a kind of drill grinder, is used for the cutting edge of grinding drill, is mainly used in machining and cutter manufacturing, belongs to the machine tool technical field.

Background technology

In the mechanical processing process, in order to guarantee cutting precision and speed, the used drill bit of drilling often needs reconditioning.The various cutting angles of drill bit generally use the complex apparatus grinding to form by manufacturer, and after bit wear or the breakage, the user is normally by manually coming reconditioning: promptly the people hands drill bit, at two cutting edges of the moving coping drills of normal sands turbine left-hand seat.During hand grinding, the symmetry and the drift angle angle of two cutting edges of drill bit are judged by range estimation fully, are difficult to reach required precision; Cutting edge relief angles and back knife face circular arc size all armrest sense are grasped, and are difficult to realistic cutting requirement; The angle of apex point chisel edge and symmetry also armrest sense are controlled; For the major diameter drill bit, because its weight is heavier, be difficult for grasping, hand grinding is difficulty more.Therefore the common precision of drill bit of hand grinding is lower, during actual the use, often causes cutting force and moment of torsion to increase, and the workpiece aperture is overproof, thereby causes the workpiece crudy to descend, and drilling life of bit shortens.Therefore the drill bit reconditioning is a ubiquitous difficult problem in the industry.

The utility model content

Can not guarantee the problems such as symmetry, drift angle angle, relief angle size, circular arc size and chisel edge angle of cutting edge at hand grinding drill bit in the prior art, the utility model provides a kind of drill grinder that is specifically designed to coping drills, it generates knife face behind the circular cone of drill bit by mechanical mechanism, relief angles, drift angle angle, circular arc size, chisel edge angle can be accurately set and guarantee easily, the symmetry of two cutting edges can be accurately guaranteed.

The utility model is achieved by the following technical solution: a kind of drill grinder, comprise the support that is arranged on base top, the emery wheel mechanism that is used for grinding drill, be arranged on the longitudinal feed mechanism and the transverse feed mechanism that can drive the feeding of emery wheel mechanism on the support, described support is provided with a rocker arm body, this rocker arm body comprise the rocking arm that has two support arms and with the equipped drill bit clamping device that is used for the clamping drill bit and adjusts the drill bit relief angle of rocking arm; the support arm of rocker arm body by both sides swingably be arranged on support on support arm be connected, the rear end of drill bit clamping device is provided with indexing means; The axial location of respective rocker arm balance staff is equipped with a rotating length detent mechanism that is used for definite drill bit with respect to the overhang of rocking arm axis of oscillation on the fuselage; The main spindle box of emery wheel mechanism rotationally be arranged on the feed mechanism planker on cylinder be connected; The both sides of rocking arm are provided with the balanced controls that a cover is used for the balance rocker arm body.

Described drill bit clamping device comprises the chuck of clamping drilling bit and the chuck main shaft that is connected with chuck, the chuck main shaft is installed in the square body by bearing or sliding sleeve, and this square body is installed in the square inner chamber of rocking arm at least and can moves up and down along this guide pillar by symmetrically arranged two guide pillars.

For grind behind the unit-type drill head knife face be 100 °～10 ° taper seat, the angle of drill bit clamping main-shaft axis of the present utility model and rocking arm axis of oscillation is designed to: 10 °～55 °.

The calibration locating pair that the utility model is located at the indexing means of drill bit clamping device rear end can be that the taper bolt that matches is faced tapering groove or mouse fluted disc pair to conical bore or tapering.

Length detent mechanism described in the utility model comprises length positioning rule and the rotating drift angle chi piece that is located at length positioning rule one end, the other end of length positioning rule is located in the hole that is installed on the rod support on the gusset piece, but the axle of rod support winding on gusset piece rotates, after finishing, the location positioning rule can be gone to opposite side, so that grinding drill.Be equipped with corresponding scale on length positioning rule and the drift angle chi piece.

Because rocker arm body weight of the present utility model is bigger, for the ease of operation, the utility model is provided for the balanced controls of balance rocker arm body, it comprises two wire wheels being located at the support arm outside and being connected with the balance staff of rocking arm, is located at two interior wire wheels of support, two wire wheels in the support are separately positioned on the two ends of trunnion shaft, be connected with balance weight on the trunnion shaft, connect by steel wire rope between the wire wheel.

For the ease of the chisel edge of coping drills, be in series with two emery wheels on the grinding wheel spindle of described emery wheel mechanism, wherein an emery wheel is a disc wheel, and its external diameter surface can become 15 °～80 ° inclination angle with end face, and this piece emery wheel is used for the chisel edge of coping drills.

Concrete operations of the present utility model and operation principle are: will treat that the abrasive drilling head is positioned in the chuck, the elongation of length positioning rule is arranged on the corresponding scale, drift angle chi piece also is located on the corresponding angle, then drill bit is stretched out, locating surface up to cutting edge contact drift angle chi piece, rotary drilling-head makes cutting edge be parallel to the gulde edge of drift angle chi piece, and drill bit is clamped with chuck.This part body can realize that centre of gyration location, the back knife face circular arc size of drill bit are determined and the horizontal location of cutting edge.In the length detent mechanism, length chi 0 bit line has the certain distance relation apart from the rocking arm axis of oscillation, is generally 0～10mm.The grinding wheel spindle of emery wheel of the present utility model mechanism can have a certain degree with drill bit thereby drive the emery wheel revolution mutually around the cylinder center steering of its underpart, is used for determining drill bit drift angle angle.The utility model passes through to adjust the amount of movement of the square body of drill bit clamping device at rocking arm square inner chamber, to realize the skew of bit central and rocking arm oscillation center, this skew can make drill bit produce relief angle when the revolution grinding, and side-play amount is big more, the drill bit relief angle is big more, and this side-play amount is generally 0-10mm.Center line of bit and rocking arm oscillation center line are 10 °～55 ° angles, can grind behind the unit-type drill head knife face be 100 °～10 ° taper seat.In the grinding process, when certain offset acts on taper seat, can make grind the bit cutting edge clearance angle therefrom the heart diminish gradually to external diameter, such relief angle Changing Pattern meets cutting principle the most, makes the drill bit after the reconditioning more durable, cutting precision is higher.After relief angle is adjusted to required angle value, locking.Starter motor, the rotation of driven by motor emery wheel, with hand reciprocally swinging rocking arm, the planker of feed mechanism drags emery wheel mechanism to the drill bit feeding, promptly grinds the drill edge with former setting drift angle, relief angle, circular arc size.The indexing mechanism at auger axis rear portion is returned turnback, another cutting edge of the grinding drill that uses the same method.Planker is fed into same scale value, can make two cutting sharpenings of drill bit get symmetrical.During the grinding drill chisel edge, rocking arm can be put certain angle, locking, the disc wheel that has certain inclination angle with another sheet carries out the reconditioning of chisel edge.Because this emery wheel has certain shape, grind the chisel edge anterior angle become by bigger negative value and approach null value, can reduce resistance to cutting to a great extent.Because rocker arm body weight of the present utility model is bigger, for ease of operation, the utility model is provided with balance mechanism, makes more convenient operation.The moment of torsion that balance weight produced of these balanced controls equates with the torque that rocker arm body is produced at any time, therefore, does not need to use too big power when the operation rocking arm, and it is lighter to operate.

The beneficial effects of the utility model are: the utility model generates knife face behind the circular cone of drill edge by mechanical mechanism, its grinding accuracy height, can accurately set and guarantee drift angle angle, relief angles, circular arc size and chisel edge angle easily, can accurately guarantee the symmetry of two cutting edges, thereby make the drill bit after the reconditioning have higher machined precision, make drilling steady, durability improves, and effectively guarantees the actual borehole accuracy of drill bit.The utility model is simple in structure, design ingenious, reconditioning precision height, easy to operate, can grinding go out multiple drill bit patterns such as standard, two relief angle, Double Tops angle, Ni Zhifu, thin-walled brill, can be widely used in mechanical processing industry.

Description of drawings

Fig. 1 is a schematic top plan view of the present utility model;

Fig. 2 is a left view of the present utility model;

Fig. 3 is that A-A among Fig. 1 is to view;

Fig. 4 is the structural representation of length detent mechanism of the present utility model;

Fig. 5 is the side view of Fig. 4;

Fig. 6 is that the B of Fig. 1 is to view;

Fig. 7 is the structural representation of balanced controls of the present utility model;

Among the figure, 1 length positioning rule, 2 screws, 3 rod supports, 4 gusset pieces, 5 drift angle chi pieces, 6 rocking arms, 7 balance weights, 8 regulate bolt, 9 wire wheels, 10 wire wheels, 11 chuck main shafts, 12 square bodies, 13 guide pillars, 14 positioning disks, 15 alignment pins, 16 emery wheels, 17 emery wheels, 18 cylinders, 19 handles, 20 set levers, the 21A support arm, 21B support arm, 22 plankers, 23 supports, 24 lock-screws, 25 balance staffs, 26 adjust handwheel, 27 bases, 28 trunnion shafves, 29 steel wire ropes, 30.

The specific embodiment

Also in conjunction with the accompanying drawings the utility model is further described below by non-limiting embodiment:

As shown in drawings, a kind of drill grinder comprises support 23, the emery wheel mechanism that is arranged on base 27 tops, the longitudinal feed mechanism that can drive the feeding of emery wheel mechanism and transverse feed mechanism, rocker arm body, length detent mechanism, balanced controls.Longitudinal feed mechanism and transverse feed mechanism are arranged on the support 23, all adopt the lead screw pair transmission, emery wheel mechanism is arranged on the planker 22 of transverse feed mechanism, be provided with a cylinder 18 below the grinding wheel spindle case, cylinder 18 is connected with planker 22, the grinding wheel spindle case can be around the center steering of cylinder 18, and makes main spindle box and cylinder 18 lockings by lock-screw 24 and the handle 19 that wears.Also be provided with angle dial on the cylinder 18, be used for determining the rotating angle of grinding wheel spindle.Be in series with two

emery wheels

16,17 on the grinding wheel spindle, its medium plain emery wheel 17 is a disc wheel, and its external diameter surface reconditioning becomes certain shape, is used for the chisel edge of coping drills, and this emery wheel external diameter surface can become 15 °～80 ° inclination angle with end face; Rocker arm body is arranged on the front portion of emery wheel mechanism, it comprises rocking arm 6 and the drill bit clamping device that has a square inner chamber, two support arms; two support arms of rocking arm 6 flexibly connect with the support arm 21A, the 21B that are arranged on the support 23 by balance staff 25 respectively, and are locked by set lever 20.Described drill bit clamping device comprises the chuck of clamping drilling bit, the chuck main shaft 11 that is connected with chuck, chuck main shaft 11 is installed in the square body 12 by bearing or sliding sleeve, square body 12 is installed in the square inner chamber of rocking arm 6 by four guide pillars 13, and can move up and down along guide pillar 13; rocking arm is provided with adjusts handwheel 26; be used to adjust the amount of movement of square body 12 in the square inner chamber, its amount of movement is by being located at the dial indication on the rocking arm.The rear end of drill bit clamping device is provided with indexing means, and it carries out the calibration location by positioning disk 14 and the alignment pin 15 that matches; Described length detent mechanism is located near on the rocking arm balance staff 25 of emery wheel side, it comprises length positioning rule 1 and drift angle chi piece 5, drift angle chi piece 5 is a fanning strip, be installed in rotation on an end of length positioning rule 1, the other end of length positioning rule 1 is located in the hole of the rod support 3 that is installed on the gusset piece 4, by screw 2 lockings.Rod support 3 can rotate around axle 30, after the location finishes, positioning rule can be rotated to an other side, so that grinding action.The length detent mechanism is fixed on the balance staff of rocking arm by gusset piece 4.The length positioning rule is provided with corresponding length scale, and drift angle chi piece is provided with corresponding angle index.Described balanced controls comprise two wire wheels 10 being located at support arm 21A, the 21B outside respectively and being connected with the balance staff 25 of rocking arm 6, are located at two interior wire wheels 9 of base 27, be provided with a trunnion shaft 28 in the base 27, two wire wheels 9 are installed in the two ends of trunnion shaft 28 respectively, also be connected with balance weight 7 on the trunnion shaft 28, distance between balance weight 7 and the trunnion shaft 28 can be regulated by regulating bolt 8, to regulate torque, wire wheel 9 is connected by steel wire rope 29 with wire wheel 10.These balanced controls and rocker arm body form a balance system.

According to actual needs, the angle of drill bit clamping main-shaft axis of the present utility model and rocking arm axis of oscillation can be designed to: 10 °～55 °, can grind behind the unit-type drill head knife face be 100 °～10 ° taper seat.

The foregoing description is not to restriction of the present utility model only with the explanation of the present utility model of opposing, and those skilled in the art also can make change on this basis, also can adopt the tapering that matches in the face of tapering groove or mouse fluted disc pair etc. as the locating pair of indexing means; Length detent mechanism of the present utility model also can be arranged on the relevant position of the chuck corresponding with the rocking arm axis of oscillation.

Other parts of the present utility model all adopt prior art, do not repeat them here.

Claims

1, a kind of drill grinder, comprise the support (23) that is arranged on base top, the emery wheel mechanism that is used for grinding drill, be arranged on the longitudinal feed mechanism and the transverse feed mechanism that can drive the feeding of emery wheel mechanism on the support (23), it is characterized in that: support is provided with a rocker arm body, this rocker arm body comprise the rocking arm (6) that has two support arms and with the equipped drill bit clamping device that is used for the clamping drill bit and adjusts the drill bit relief angle of rocking arm (6); the support arm of rocker arm body by both sides swingably be arranged on support arm on the support (23) (21A; 21B) connect, the rear end of drill bit clamping device is provided with indexing means; The axial location of respective rocker arm balance staff is equipped with a rotating length detent mechanism that is used for definite drill bit with respect to the overhang of rocking arm (6) axis of oscillation on the fuselage; The main spindle box of emery wheel mechanism rotationally be arranged on feed mechanism planker (22) on cylinder (18) be connected; The both sides of rocking arm (6) are provided with the balanced controls that a cover is used for the balance rocker arm body.

2, drill grinder according to claim 1, it is characterized in that: described drill bit clamping device comprises the chuck of clamping drilling bit and the chuck main shaft (11) that is connected with chuck, chuck main shaft (11) is installed in the square body (12) by bearing or sliding sleeve, and square body (12) is installed in the square inner chamber of rocking arm (6) at least and can moves up and down along guide pillar (13) by symmetrically arranged two guide pillars (13).

3, drill grinder according to claim 2 is characterized in that: the angle of drill bit clamping main-shaft axis and rocking arm axis of oscillation is: 10 °～55 °.

4, drill grinder according to claim 2 is characterized in that: the calibration locating pair that is located at the indexing means of drill bit clamping device rear end is taper bolt and conical bore or tapering face and tapering groove or the mouse fluted disc pair that matches.

5, according to claim 1 or 2 or 3 or 4 described drill grinders, it is characterized in that: described length detent mechanism is located near on the rocking arm balance staff of emery wheel side, it comprises length positioning rule (1) and the rotating drift angle chi piece (5) that is located at length positioning rule (1) one end, the other end of length positioning rule (1) is located in the hole of the rod support (3) that is installed on the gusset piece (4), rod support (3) but the axle (30) of winding on connecting plate (4) rotate.

6, drill grinder according to claim 5, it is characterized in that: the balanced controls that are used for the balance rocker arm body comprise two wire wheels (10) of being located at support arm (21A, the 21B) outside and being connected with the balance staff of rocking arm (6), are located at interior two wire wheels (9) of base (27), two wire wheels (9) are separately positioned on the two ends of trunnion shaft (28), be connected with balance weight (7) on the trunnion shaft (28), wire wheel (9) is connected by steel wire rope with wire wheel (10).

7, drill grinder according to claim 6 is characterized in that: be in series with two emery wheels on the grinding wheel spindle of described emery wheel mechanism, wherein an emery wheel is a disc wheel.

8, drill grinder according to claim 7 is characterized in that: the external diameter surface of described disc wheel becomes 15 °～80 ° inclination angle with end face.