CN104858729A

CN104858729A - Drill grinding device

Info

Publication number: CN104858729A
Application number: CN201510320502.7A
Authority: CN
Inventors: 沈爱国
Original assignee: ANHUI JIANGHUAI SPECIAL PURPOSE VEHICLE Co Ltd
Current assignee: ANHUI JIANGHUAI SPECIAL PURPOSE VEHICLE Co Ltd
Priority date: 2015-06-09
Filing date: 2015-06-09
Publication date: 2015-08-26

Abstract

The invention relates to a drill grinding device. The drill grinding device comprises a grinding wheel and a fixture, wherein the fixture is fixed onto a base; an adjusting mechanism is arranged between the base and the fixture and composed of a slider, the slider is in sliding guide fit with the base in the radial direction of the grinding wheel and is provided with a rotating shaft and a locking module for locking rotation of the rotating shaft; the length direction of the rotating shaft is parallel to the axial direction of the grinding wheel, one end of the rotating shaft, which is close to the grinding wheel, is hinged to the fixture through a hinge shaft, and the rotating shaft is perpendicular to the hinge shaft. By adjusting the position of the slider to adjust the distance between a drill and the grinding wheel, adjusting the rotation of the rotating shaft to adjust the inclination angle of the drill, and adjusting the rotation of the fixture around the hinge shaft, the drill grinding device achieves grinding machining between a tool face and a tool edge and ensures that the rake angle, the relief angle and the top angle of a machined drill can meet the requirements. According to the drill grinding device, a user does not need to hold to fix the drill directly by hands, so that the potential risks of hand injury caused by the grinding wheel can be eliminated.

Description

A kind of equipment carrying out grinding for drill bit

Technical field

The present invention relates to field of machining, be specifically related to a kind of equipment carrying out grinding for drill bit.

Background technology

In mechanical processing process, conventional fluted drill punches, and (during D<15mm, edge's relief angle is 10 ~ 14 ° for the anterior angle-45 ~-60 ° of fluted drill drill bit, relief angle; During D=15 ~ 30mm, edge's relief angle is 9 ~ 12 °; During D > 30mm, edge's relief angle is 8 ~ 11 °; D is bit diameter); Sharp angle 118 °; When only meeting certain requirements, the precision of guarantee punching, otherwise cannot punch or not reach processing technology requirement.At present carry out grinding to realize by manually holding with a hand drill bit on emery wheel for the control of each angle of drill bit, this mode of operation is difficult to the precision ensureing grinding, the full experience by operating personnel judges, cause the drill bit after grinding easily undesirable or scrap, make the bore dia processed overproof; Also there is the potential safety hazard that hand hindered by emery wheel in this mode of operation in addition.

Summary of the invention

Object of the present invention is just to provide a kind of equipment carrying out grinding for drill bit, and it can effectively solve the problem, and improves the precision of drill bit grinding.

For achieving the above object, the present invention implements by the following technical solutions:

A kind of equipment carrying out grinding for drill bit, it is characterized in that: the fixture comprising emery wheel for grinding drill and fixed drill bit, fixture is fixed on base, governor motion is provided with between base and fixture, governor motion comprises slide block, slide block and base form slide-and-guide along the radial direction of emery wheel and coordinate, the latch assembly of locking is carried out in rotation slide block being provided with rotating shaft and countershaft, the length direction of rotating shaft parallels with the axis of emery wheel, rotating shaft consists of jointed shaft and fixture near one end of emery wheel and is articulated and connected, and rotating shaft and jointed shaft are arranged vertically.

In technique scheme, by the position of adjusting slider, the spacing between drill bit and emery wheel is regulated, regulate axis of rotation thus regulate the angle of inclination of drill bit, alignment jig around jointed shaft rotation thus realize the machining of knife face and blade, ensure that the anterior angle after drill bit processing, relief angle, drift angle meet the demands.The present invention does not need directly to grip fixed drill bit with hand in addition, hinders the potential safety hazard of hand because this eliminating emery wheel.

Accompanying drawing explanation

Fig. 1 is the cutter head structure schematic diagram of fluted drill;

Fig. 2 is structural representation of the present invention.

Detailed description of the invention

In order to make objects and advantages of the present invention clearly understand, below in conjunction with embodiment, the present invention is specifically described.Should be appreciated that following word only in order to describe one or more concrete embodiments of the present invention, considered critical is not carried out to the protection domain that the present invention specifically asks.

The technical scheme that the present invention takes as shown in Figure 2, a kind of equipment carrying out grinding for drill bit, comprise the fixture of emery wheel 20 for grinding drill 10 and fixed drill bit 10, fixture is fixed on base, governor motion is provided with between base and fixture, governor motion comprises slide block 51, slide block 51 and base form slide-and-guide along the radial direction of emery wheel 20 and coordinate, the latch assembly of locking is carried out in rotation slide block 51 being provided with rotating shaft 52 and countershaft 52, the length direction of rotating shaft 52 parallels with the axis of emery wheel 20, rotating shaft 52 consists of jointed shaft 36 and fixture near one end of emery wheel 20 and is articulated and connected, rotating shaft 52 and jointed shaft 36 are arranged vertically.In technique scheme, by the position of adjusting slider 51, the spacing between drill bit 10 and emery wheel 20 is regulated, regulate rotating shaft 52 to rotate thus regulate the angle of inclination of drill bit 10, alignment jig around jointed shaft 36 rotation thus realize the machining of knife face and blade, ensure drill bit 10 process after anterior angle, relief angle, drift angle meet the demands.The present invention does not need directly to grip fixed drill bit 10 with hand in addition, hinders the potential safety hazard of hand because this eliminating emery wheel 20.

Concrete scheme is: fixture comprises two positioned opposite first, second splint 31, 32, first, second splint 31, 32 relative two plate faces are offered respectively the V-shaped groove for clamping drilling bit 10, first, second splint 31, the first guide post 33 is provided with between 32, the length direction of the first guide post 33 is consistent with the axis of emery wheel 20, one end of first guide post 33 is provided with fixed head 34, first clamping plate 31 are between fixed head 34 and the second clamping plate 32, the other end of the first guide post 33 and the second clamping plate 32 Joint, first clamping plate 31 form slide-and-guide with the first guide post 33 and coordinate, fixed head 34 is arranged the bolt 35 being parallel to the first guide post 33 and arranging, one end and first clamping plate 31 of bolt 35 lean, second clamping plate 32 are articulated and connected by jointed shaft 36 and rotating shaft 52.First and second bearing 41,42 that before and after base comprises, vertical shape is arranged, be provided with between first and second bearing 41,42 perpendicular to emery wheel 20 axis and horizontally disposed screw mandrel 44 and the second guide post 43, screw mandrel 44, second guide post 43 and slide block 51 combine and form feed screw nut's governor motion, and screw mandrel 44 end extended to outside the first bearing 41 is provided with operation rotating disk 45.A contiguous block can be set at the axle head of rotating shaft 52, contiguous block offers hinge hole, the outer panel face of the second clamping plate 32 arranges an engaging lug, engaging lug is provided with the jointed shaft 36 be connected as a single entity with it, jointed shaft 36 can insert in hinge hole freely or extract out in hinge hole, realizes assembling and the unloading of fixture.Latch assembly can be locking pin composition, and the rotation of countershaft 52 is carried out locked.Emery wheel 20 is fixing on the driving shaft, and driving shaft is connected with drive motors 21.Operation rotating disk 45 indicates the scale value that slide block 51 feeds, and moves distance for measuring slide block 51.

The tool bit part structure of fluted drill as shown in Figure 1, the Kong Xin of original state hinge hole arranges along vertical, the flute length direction of V-shaped groove parallels with horizontal plane, rotating shaft 52 respectively can rotate 31 ° counterclockwise and clockwise, latch assembly can be locked the rotating shaft 52 after rotation, specifically can be locking pin and forms.

Use the present invention to the concrete operations that fluted drill carries out grinding process is:

To be unclamped by fixture by rotating bolt 35, and put into drill bit 10, make the major cutting edge of drill bit 10 corresponding with the center line of first and second clamping plate 31,32 respectively, drill bit 10 exposes about 15mm; Rotating bolt 35 clamps drill bit 10, and fixture and rotating shaft 52 are articulated and connected after clamping by drill bit 10, also insert in hinge hole by jointed shaft 36; Make rotating shaft 52 rotate 31 ° counterclockwise, adjustment drill bit 10 and the position of emery wheel 20, make the gap between drill bit 10 and emery wheel 20 be about 2mm; Start emery wheel 20, left hand buttresses fixture, the feeding of the right hand slow rotary screw rod 44 adjusting slider 51, and when finding that there is grinding flower, stop operating screw mandrel 44, remembers the scale value after operating rotating disk 45 rotates; Chucking operation carries out knife face after on the left of rotation grinding around jointed shaft 36, behind left side after knife face milled, returns fixture and is about 80mm, return to original state; Adjust rotating shaft 52 subsequently and rotate clockwise 31 °, then repeat aforesaid operations, knife face after on the right side of grinding.

Adopt dead point grinding chisel edge in addition, regulate the fixed position of drill bit 10 in first and second clamping plate 31,32, major cutting edge aligns with the front end surface of first and second clamping plate 31,32, fixture and rotating shaft 52 are articulated and connected, insert alignment pin countershaft 52 to lock, rotary screw rod 44 pairs of slide blocks 51 feed the grinding realizing drill bit, remember the scale value operating rotating disk 45 rotation; The right side helicoid knife face that on the right side of same grinding, rake face is corresponding, keeps the same amount of feeding, ensures chisel edge width.

In a word, drill bit 10 provided by the invention carries out the equipment of grinding, and it improves the precision of drill bit 10 grinding, and eliminates the potential safety hazard that hand hindered by emery wheel 20.

The above is only the preferred embodiment of the present invention; should be understood that; for those skilled in the art; to know in the present invention after contents; under the premise without departing from the principles of the invention; can also make some equal conversion to it and substitute, these convert on an equal basis and substitute and also should be considered as belonging to protection scope of the present invention.

Claims

1. one kind is carried out the equipment of grinding for drill bit, it is characterized in that: the fixture comprising emery wheel for grinding drill and fixed drill bit, fixture is fixed on base, governor motion is provided with between base and fixture, governor motion comprises slide block, slide block and base form slide-and-guide along the radial direction of emery wheel and coordinate, the latch assembly of locking is carried out in rotation slide block being provided with rotating shaft and countershaft, the length direction of rotating shaft parallels with the axis of emery wheel, rotating shaft consists of jointed shaft and fixture near one end of emery wheel and is articulated and connected, and rotating shaft and jointed shaft are arranged vertically.

2. the equipment carrying out grinding for drill bit according to claim 1, it is characterized in that: fixture comprises two positioned opposite first, second splint, first, the two plate faces that second splint is relative are offered respectively the V-shaped groove for clamping drilling bit, first, the first guide post is provided with between second splint, the length direction of the first guide post is consistent with the axis of emery wheel, one end of first guide post is provided with fixed head, first clamping plate are between fixed head and the second clamping plate, the other end of the first guide post and the second clamping plate Joint, first clamping plate and the first guide post form slide-and-guide and coordinate, fixed head is arranged the bolt being parallel to the first guide post and arranging, one end and first clamping plate of bolt lean, second clamping plate are articulated and connected by jointed shaft and rotating shaft.

3. the equipment carrying out grinding for drill bit according to claim 1 and 2, it is characterized in that: first and second bearing that before and after base comprises, vertical shape is arranged, be provided with between first and second bearing perpendicular to grinding wheel spindle to and horizontally disposed screw mandrel and the second guide post, the combination of screw mandrel, the second guide post and slide block forms feed screw nut's governor motion, and the end that screw mandrel extends to the first support outer is provided with operation rotating disk.