CN202192306U - Tipped guiding expanding drill bit - Google Patents

Tipped guiding expanding drill bit Download PDF

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Publication number
CN202192306U
CN202192306U CN2011202676129U CN201120267612U CN202192306U CN 202192306 U CN202192306 U CN 202192306U CN 2011202676129 U CN2011202676129 U CN 2011202676129U CN 201120267612 U CN201120267612 U CN 201120267612U CN 202192306 U CN202192306 U CN 202192306U
Authority
CN
China
Prior art keywords
drill bit
conical
cutting edge
expanding drill
edge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2011202676129U
Other languages
Chinese (zh)
Inventor
屈永丰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenyang Yuanda Aluminium Industry Group Co Ltd
Original Assignee
Shenyang Yuanda Aluminium Industry Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenyang Yuanda Aluminium Industry Group Co Ltd filed Critical Shenyang Yuanda Aluminium Industry Group Co Ltd
Priority to CN2011202676129U priority Critical patent/CN202192306U/en
Application granted granted Critical
Publication of CN202192306U publication Critical patent/CN202192306U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

The utility model relates to a tipped guiding expanding drill bit which belongs to hole reaming tools and solves the problems of poor processing quality, large quantity of substandard products and short service lifetime of a drilling bit due to non-concentricity of a conventional expanding drill bit between a flat-head conical-surface cutting edge and a hole and inability of ensuring verticality. The tipped guiding expanding drill bit comprises a drilling handle and conical surface cutting edge and is characterized in that a guide column with an inlaid sleeve is arranged at the front end of the drilling handle, and the axis of the guide column with the inlaid sleeve is on the same center line with the axes of the drilling handle and the conical surface cutting edge. The tipped guiding expanding drill bit is simple in structure, convenient for operation, and accurate in positioning, ensures verticality, and can effectively improve the work efficiency and processing precision of a workpiece, and save labor and materials. Moreover, the service lifetime of a drill bit can be prolonged.

Description

An edge guiding reaming bit
Technical field
The utility model relates to a kind of reaming tool; Particularly a kind of connecting hole that is used for workpiece such as aluminium section bar and thread Pilot hole have satisfied not that the grade of tolerance requires and the edge head guiding reaming bit that carries out cut, and the endoporus that yet is applicable to other workpiece is not the reaming cut of regular shape.
Background technology
In industries such as machining, machine-building, the connecting hole of workpiece such as a lot of aluminium section bars and thread Pilot hole are all accomplished by extruder, and the precision in hole has the deviation connecting hole little on the workpiece if cause; Then connector can't pass through, and thread Pilot hole is little during tapping, has satisfied not the requirement of dimensional tolerance; To influence the normal tapping of screw tap; Also have in the aluminium section bar suspension member thread Pilot hole process to have very large deviation, and the hole not regular shape, influence crudy yet.Therefore, still need on lathe, accomplish reaming work under a lot of situation with drill bit.
The drill bit of reaming at present mainly is made up of drillstock peace nose cone face cutting edge; The guider that does not match with the workpiece hole, when carrying out reaming to workpiece, just can in the center that needs to aim at foramen primum earlier; But Chang Yinkong is not a regular shape in the reaming process; Perpendicularity can't be guaranteed, so influenced crudy in the tack conical surface cutting edge center and the foramen primum axle center that make reamer not on same center line.Can cause workpiece can not satisfy drawing requirement like this, not reach good processing effect, make workpiece become defect ware, cause a large amount of wastes in material and man-hour.Therefore, existing common reaming bit can not satisfy requirement on machining accuracy sometimes, is badly in need of improving.
The utility model content
The purpose of the utility model is for a kind of edge guiding reaming bit is provided, and fundamentally solves existing reaming bit because tack conical surface cutting edge and hole decentraction, can't guarantee that the crudy that perpendicularity causes is poor, defect ware increases; Problems such as drilling life of bit reduction have simple in structure, easy to operate; The advantage of perpendicularity is guaranteed in accurate positioning, can significantly improve the machining accuracy of operating efficiency and workpiece; Saving of labor, material-saving, the service life of prolongation drill bit.
The technical scheme of the utility model is: this edge guiding reaming bit comprises drillstock and conical surface cutting edge; Its technical essential is: said drillstock front end is provided with edge cover lead, and the axle center of the axle center of edge cover lead and drillstock, conical surface cutting edge is on same center line.
The front end of said edge cover lead is provided with chamfering.
Advantage of the utility model and positive technique effect are: drillstock of the utility model and the edge of its front end cover lead are split-type structural, and edge cover lead outside dimension and tolerance can be joined work according to the size in hole on the workpiece, have guaranteed the machining accuracy in hole.Drillstock can adopt the transformation of the way of common standard drill bit simultaneously, has utilized original resource.During use, make drillstock and conical surface cutting edge and accurate work piece positioning through edge cover lead.Therefore, that this edge guiding reaming bit has is simple in structure, easy to operate, accurate positioning, guarantee characteristics such as perpendicularity, not only effectively raises the machining accuracy of operating efficiency and workpiece;, and reduced the defect ware rate, saving of labor, material-saving; Provide cost savings, prolong the service life of drill bit.Fundamentally solve existing reaming bit because tack conical surface cutting edge and hole decentraction, can't guarantee that the crudy that perpendicularity causes is poor, defect ware increases problems such as drilling life of bit reduction.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described further:
Fig. 1 is a kind of structural representation of the utility model.
Sequence number explanation among the figure: l drillstock, 2 conical surface cutting edges, 3 edge cover leads.
The specific embodiment
According to Fig. 1 the utility model is described in detail.This edge guiding reaming bit can improve on the architecture basics of existing drill bit, also can newly make by weight of structure shown in Figure 1.It comprises drillstock 1 and conical surface cutting edge 2 and edge cover lead 3 parts such as grade.Wherein the front end of drillstock 1 is provided with the edge cover lead 2 of split-type structural, and vertical cut can be guaranteed in the axle center of the axle center of edge cover lead 2 and drillstock 1, conical surface cutting edge 2 on same center line, to improve crudy.The outside dimension and the tolerance of edge cover lead 3 can be joined work according to the size in hole on the workpiece, to guarantee the machining accuracy in hole.For edge cover lead 2 is inserted in the hole of workpiece quickly and accurately, the front end that overlaps lead at edge can be provided with chamfering.The diameter of edge cover lead 3 adopts tolerance clearance to cooperate with the aperture on the workpiece.Drill body 1 can adopt the transformation of the way of common standard drill bit.
Though the processing of the utility model, making are very simple, utilize the effect of its edge cover lead 3, but can significantly improve the machining accuracy of operating efficiency and workpiece, prolong the service life of drill bit.

Claims (2)

1. an edge guiding reaming bit comprises drillstock and conical surface cutting edge, it is characterized in that: said drillstock front end is provided with edge cover lead, and the axle center of the axle center of edge cover lead and drillstock, conical surface cutting edge is on same center line.
2. an edge according to claim 1 guiding reaming bit is characterized in that: the front end of said edge cover lead is provided with chamfering.
CN2011202676129U 2011-07-27 2011-07-27 Tipped guiding expanding drill bit Expired - Fee Related CN202192306U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011202676129U CN202192306U (en) 2011-07-27 2011-07-27 Tipped guiding expanding drill bit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011202676129U CN202192306U (en) 2011-07-27 2011-07-27 Tipped guiding expanding drill bit

Publications (1)

Publication Number Publication Date
CN202192306U true CN202192306U (en) 2012-04-18

Family

ID=45947237

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011202676129U Expired - Fee Related CN202192306U (en) 2011-07-27 2011-07-27 Tipped guiding expanding drill bit

Country Status (1)

Country Link
CN (1) CN202192306U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110524031A (en) * 2019-07-26 2019-12-03 中国航空工业集团公司济南特种结构研究所 A kind of separate type broad that guide post is variable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110524031A (en) * 2019-07-26 2019-12-03 中国航空工业集团公司济南特种结构研究所 A kind of separate type broad that guide post is variable

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120418

Termination date: 20140727

EXPY Termination of patent right or utility model