CN206169362U - Drill bit in processing piston pin circular arc hole - Google Patents

Drill bit in processing piston pin circular arc hole Download PDF

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Publication number
CN206169362U
CN206169362U CN201621265436.4U CN201621265436U CN206169362U CN 206169362 U CN206169362 U CN 206169362U CN 201621265436 U CN201621265436 U CN 201621265436U CN 206169362 U CN206169362 U CN 206169362U
Authority
CN
China
Prior art keywords
circular arc
drill bit
section
piston pin
changeover portion
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
CN201621265436.4U
Other languages
Chinese (zh)
Inventor
梅列文
梅小文
黄朝军
黄治乾
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.)
Hubei Dengfeng High-Strength Bolts Co Ltd
Original Assignee
Hubei Dengfeng High-Strength Bolts 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 Hubei Dengfeng High-Strength Bolts Co Ltd filed Critical Hubei Dengfeng High-Strength Bolts Co Ltd
Priority to CN201621265436.4U priority Critical patent/CN206169362U/en
Application granted granted Critical
Publication of CN206169362U publication Critical patent/CN206169362U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a drill bit in processing piston pin circular arc hole has the drill bit body, and the both ends of drill bit body all are equipped with the tool bit, the tool bit has guiding section, changeover portion, circular arc cutting section and rear in proper order, is equipped with a circular arc cutting edge to changeover portion, circular arc cutting section and rear direction from guiding section, guiding section and drill bit body the central axis parallel arrangement, the changeover portion is 30 slope settings with drill bit body the central axis, and the rear is 65 with drill bit body the central axis and inclines to set up, the the arc RADIUS of circular arc cutting section is 3mm, the utility model discloses process out promptly earlier the centre bore than traditional processing method and carry out abrasive machining again and go out its symmetry of circular arc section and will get well a lot, it is accurate pleasing to the eye, mainly use in the middle of the circular arc section in piston pin circular arc hole is processed.

Description

A kind of drill bit of machining piston pin circular hole
Technical field
This utility model is related to machine mechanical equipment technical field, especially a kind of brill of machining piston pin circular hole Head.
Background technology
Generally when machining piston pin circular hole, device to hole port is needed to carry out grinding circular arc after hole is drilled, But because piston pin circular hole is processed in the side wall cambered surface of piston pin, its grinding symmetry is difficult to hold, grinding Difficulty is big, therefore it is necessary to design a kind of specific circular arc port processing drill.
The content of the invention
The purpose of this utility model seeks to solve to be difficult to grind by traditional processing instrument in machining piston pin circular hole Cut symmetrical problem, there is provided a kind of simple structure, the good special drill bit for machining piston pin circular hole of processing effect.
Concrete scheme of the present utility model is:A kind of drill bit of machining piston pin circular hole, with drill body, drill bit sheet The two ends of body are equipped with cutter head, and the cutter head has successively boot segment, changeover portion, circular arc segment of cutting and a rear, bootstrap section to Changeover portion, circular arc segment of cutting and rear direction are provided with an arc edge, and the boot segment is put down with drill body central axis Row is arranged, and the changeover portion is obliquely installed with drill body central axis in 30 °, and rear is in 65 ° with drill body central axis It is obliquely installed, the arc radius of the circular arc segment of cutting are 3mm.
Operation principle of the present utility model:This utility model is positioned by the boot segment on drill body, changeover portion, then The arc section of the circular hole on piston pin arc surface is cut through the arc edge of circular arc segment of cutting, arc section is processed Afterwards, then the center drill bit of changing inwards face gets out centre bore, this first processes centre bore and enters again than traditional processing method It is well many that row grinding goes out arc section its symmetry, accurate attractive in appearance.
This utility model has the advantages that:
1st, by this new drill bit, the arc section for solving original piston pin circular hole is difficult to be ground symmetrical difficulty Topic;
2nd, working (machining) efficiency is improve, solves original grinding arc section roughness out bad to lower road buffer Sequence increases the problem of difficulty;
3rd, the symmetry and aesthetic property of arc section are improve, it is ensured that product quality.
Description of the drawings
Fig. 1 is that piston pin master cuts open structural representation;
Fig. 2 is piston pin cross section structure schematic diagram;
Fig. 3 is this utility model structural representation.
In figure:1-arc section, 2-piston pin centre bore, 3-piston pin, 4-boot segment, 5-changeover portion, 6-circular arc Segment of cutting, 7-rear, 8-drill body, 9-arc edge.
Specific embodiment
Referring to Fig. 1-Fig. 3, this utility model is a kind of drill bit of machining piston pin circular hole, with drill body 8, drill bit The two ends of body are equipped with cutter head, and the cutter head has successively boot segment 4, changeover portion 5, circular arc segment of cutting 6 and rear 7, draws certainly Lead section and be provided with an arc edge 9, the boot segment and drill body center to changeover portion, circular arc segment of cutting and rear direction Diameter parallel is arranged, and the changeover portion is obliquely installed with drill body central axis in 30 °, rear and drill body central axis It is obliquely installed in 65 °, the arc radius of the circular arc segment of cutting are 3mm.
Operation principle of the present utility model:This utility model is positioned by the boot segment on drill body, changeover portion, then The arc section 1 of the circular hole on the arc surface of piston pin 3 is cut through the arc edge of circular arc segment of cutting, arc section is processed After good, then the center drill bit of changing inwards face gets out centre bore, this first processes centre bore again than traditional processing method Carrying out grinding, to go out arc section its symmetry well a lot, accurate attractive in appearance.
This utility model has the advantages that:
1st, by this new drill bit, the arc section for solving original piston pin circular hole is difficult to be ground symmetrical difficulty Topic;
2nd, working (machining) efficiency is improve, solves original grinding arc section roughness out bad to lower road buffer Sequence increases the problem of difficulty;
3rd, the symmetry and aesthetic property of arc section are improve, it is ensured that product quality.

Claims (1)

1. a kind of drill bit of machining piston pin circular hole, with drill body, the two ends of drill body are equipped with cutter head, its feature It is:The cutter head has successively boot segment, changeover portion, circular arc segment of cutting and rear, and bootstrap section to changeover portion, circular arc cut Section and rear direction are provided with an arc edge, and the boot segment is arranged with drill body centerline axis parallel, the transition Section is obliquely installed with drill body central axis in 30 °, and rear is obliquely installed with drill body central axis in 65 °, the circle The arc radius of arc segment of cutting are 3mm.
CN201621265436.4U 2016-11-24 2016-11-24 Drill bit in processing piston pin circular arc hole Expired - Fee Related CN206169362U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621265436.4U CN206169362U (en) 2016-11-24 2016-11-24 Drill bit in processing piston pin circular arc hole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621265436.4U CN206169362U (en) 2016-11-24 2016-11-24 Drill bit in processing piston pin circular arc hole

Publications (1)

Publication Number Publication Date
CN206169362U true CN206169362U (en) 2017-05-17

Family

ID=58685834

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201621265436.4U Expired - Fee Related CN206169362U (en) 2016-11-24 2016-11-24 Drill bit in processing piston pin circular arc hole

Country Status (1)

Country Link
CN (1) CN206169362U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107971529A (en) * 2017-11-24 2018-05-01 肖亦萍 A kind of computer case drilled hole polishing all-in-one machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107971529A (en) * 2017-11-24 2018-05-01 肖亦萍 A kind of computer case drilled hole polishing all-in-one machine
CN107971529B (en) * 2017-11-24 2019-04-05 肖亦萍 A kind of computer case drilled hole polishing all-in-one machine

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Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20170517

Termination date: 20191124