CN205466532U

CN205466532U - Solid propellant powder column afterbody awl hole machining tool

Info

Publication number: CN205466532U
Application number: CN201520619116.3U
Authority: CN
Inventors: 吕锁平
Original assignee: INNER MONGOLIA SPACE HONGXIA CHEMICAL Co Ltd
Current assignee: INNER MONGOLIA SPACE HONGXIA CHEMICAL Co Ltd
Priority date: 2015-08-12
Filing date: 2015-08-12
Publication date: 2016-08-17
Anticipated expiration: 2025-08-12

Abstract

The utility model relates to a solid propellant powder column afterbody awl hole machining tool, including position sleeve and drilling tool, the location ways is at solid propellant powder column afterbody, through -hole on the position sleeve and solid propellant powder column afterbody taper hole position unanimity, drilling tool comprises tool bit, cutter arbor and handle of a knife, plays effect radial and axial feed, cutting and chip removal, and tool bit front end toper section is equipped with 80 V type recess, the rake face of tool bit head is on the face at 80 V type recess positions, and for the plane rake face, anterior angle and cutting edge inclination all are 0, are convenient for make and the sharpening, relief angle on the operator sword is the chisel edge off centre that 20 and 30, two back knife faces formed respectively, and the silver wire with the center when having avoided drilling bores, the relief angle of vice cutting edge is 15, can cut the taper hole lateral wall effectively, offer the centre bore and communicate with each other with 80 V type recess at the tool bit straight section, can be with the swarf extraction.

Description

A kind of solid propellant grain afterbody taper-hole processing cutter

Technical field

The present invention relates to a kind of cutter, particularly relate to a kind of solid propellant grain afterbody taper-hole processing cutter.

Background technology

In solid propellant rocket manufacturing, tactics model electromotor continuation of the journey level powder column is generally by mould Tool moulding by casting.And as afterbody coniform hole, structural element can the molding when cast, partly war on powder column Art solid engines continuation of the journey level powder column manufacture process needs taper hole in type to its afterbody to reprocess add Work, and on center, powder column interior tapered hole, also it is respectively arranged with a filamentary silver, so taper hole is reprocessed adds man-hour not The positions and dimensions of taper hole to be ensured meets design requirement, and filamentary silver to be ensured is not cut off.Although it is existing Technology can use the instrument such as fluted drill or reamer to carry out Drilling operation on solid propellant grain, but to process Taper hole also ensures that filamentary silver is not cut off, and can't realize.So to complete this work, it is necessary to design a set of Simple and effective dedicated tool.

Summary of the invention

Technical problem to be solved in the utility model is to solve prior art to use the instrument such as fluted drill or reamer When carrying out Drilling operation on solid propellant grain, processing taper hole also ensures that filamentary silver is cut-off and can not realize Problem, it is provided that a kind of solid propellant grain afterbody taper-hole processing cutter.

For solving the technical problem existed, the technical scheme is that and include positioning sleeve and drilling tool.

Described positioning sleeve is enclosed within solid propellant grain afterbody, the through hole on positioning sleeve and solid propellant grain Afterbody taper hole position consistency, plays radially location and the effect of axial limiting to drilling tool.

Described drilling tool is made up of cutter head, knife bar and hilt, plays radial and axial feeding, cutting and chip removal Effect, drilling tool is made up of carbon steel material.Cutter head takes welding manner with knife bar, knife bar with hilt, Wherein cutter head is major part, plays cutting and the effect of chip removal；Knife bar plays connection cutter head and hilt effect；Cutter Portion of the handle during for operating.

Described cutter head front end is conical section, and rear end is straight section, is provided with step in the middle part of cutter head, at cutter head through fixed During the set of position, step coordinates the axial limiting effect playing cutter head with positioning sleeve end face, it is ensured that drilling depth.

Cutter head front end conical section is provided with the V-type groove of 80 °.The rake face of cutter head head is at 80 ° of V-type concave parts On the face of position, it is all 0 ° for plane rake face, anterior angle and cutting edge inclination, it is simple to manufacture and sharpen.Major cutting edge On relief angle be respectively 20 ° and 30 °, the chisel edge off-center that after two, knife face is formed, it is to avoid during boring will in The filamentary silver of the heart bores.The relief angle of auxiliary-blade is 15 °, effectively can cut taper hole sidewall.Straight at cutter head Duan Kaishe centre bore the V-type groove with 80 ° communicate, can be by chip discharge.

The invention has the beneficial effects as follows: 1) this inventive structure is simple, it is simple to and manufacturing, processing charges is low；2) The V-type groove of cutter head front end conical section 80 ° had both defined rake face and the auxiliary-blade of cutter head head, was easy to again Chip removal；3) chisel edge off-center, it is to avoid the filamentary silver at boring Shi Jiangkong center bores.

Accompanying drawing explanation

Fig. 1 is the attachment structure schematic diagram of apparatus of the present invention processing propellant charge；

Fig. 2 is cutter head structure schematic diagram；

Fig. 3 is cutter head A-A cross-sectional view；

Fig. 4 is cutter head B-B cross-section structure enlarged diagram；

Fig. 5 is the point of a knife structure enlarged diagram of cutter head.

In accompanying drawing, 1 be propellant charge, 2 be positioning sleeve, 3 for cutter head, 4 be handle of a knife, 5 be hilt.

Detailed description of the invention

Below in conjunction with the accompanying drawings this utility model is further described.

As it is shown in figure 1, solid propellant grain afterbody taper-hole processing cutter includes positioning sleeve 2 and drilling tool.

Positioning sleeve 2 is enclosed within the afterbody of solid propellant grain 1, the through hole on positioning sleeve 2 and solid propellant Powder column afterbody taper hole position consistency, plays radially location and the effect of axial limiting to drilling tool.

Described drilling tool is made up of cutter head 3, knife bar 4 and hilt 5, rise radial and axial feeding, cutting and The effect of chip removal, drilling tool is made up of carbon steel material, and cutter head 3, knife bar 4 are fixed the most successively with hilt 5 Connecting, wherein cutter head is major part, plays cutting and the effect of chip removal；Knife bar plays connection cutter head and hilt is made With；Hilt is portion of the handle during operation.

Described cutter head 3 front end is conical section, is provided with step in the middle part of cutter head 3, when cutter head 3 is through positioning sleeve Step coordinates the axial limiting effect playing cutter head with positioning sleeve 2 end face, it is ensured that drilling depth.

Cutter head is provided with the V-type groove of 80 °.The rake face of cutter head head is on the face at 80 ° of V-type groove positions, It is all 0 ° for plane rake face, anterior angle and cutting edge inclination, it is simple to manufacture and sharpen.Relief angle on major cutting edge is divided It is not 20 ° and 30 °, the chisel edge off-center that after two, knife face is formed, it is to avoid the filamentary silver at boring Shi Jiang center bores Fall.The relief angle of auxiliary-blade is 15 °, effectively can cut taper hole sidewall.Center is offered at cutter head straight section The V-type groove of Kong Bingyu 80 ° communicates, can be by chip discharge.

Claims

1. a solid propellant grain afterbody taper-hole processing cutter, it is characterised in that include positioning sleeve and boring Cutter；

Described positioning sleeve is enclosed within solid propellant grain afterbody, the through hole on positioning sleeve and solid propellant grain Afterbody taper hole position consistency, plays radially location and the effect of axial limiting to drilling tool；

Described drilling tool is made up of cutter head, knife bar and hilt, plays radial and axial feeding, cutting and chip removal Effect, drilling tool is made up of carbon steel material；Cutter head and knife bar, knife bar and the hilt the most successively company of fixing Connecing, wherein cutter head is major part, plays cutting and the effect of chip removal；Knife bar plays connection cutter head and hilt effect； Hilt is portion of the handle during operation；

Described cutter head front end is conical section, and rear end is straight section, is provided with step in the middle part of cutter head, at cutter head through fixed During the through hole that position is overlapped, step coordinates the axial limiting effect playing cutter head with positioning sleeve end face, it is ensured that drilling depth；

Cutter head front end conical section is provided with the V-type groove of 80 °；The rake face of cutter head head is at 80 ° of V-type concave parts On the face of position, it is all 0 ° for plane rake face, anterior angle and cutting edge inclination, it is simple to manufacture and sharpen；Major cutting edge On relief angle be respectively 20 ° and 30 °, the chisel edge off-center that after two, knife face is formed, it is to avoid during boring will in The filamentary silver of the heart bores；The relief angle of auxiliary-blade is 15 °, effectively can cut taper hole sidewall；Straight at cutter head Duan Kaishe centre bore the V-type groove with 80 ° communicate, can be by chip discharge.