CN106975779A

CN106975779A - Interior feeding tool

Info

Publication number: CN106975779A
Application number: CN201710291234.XA
Authority: CN
Inventors: 石光洲; 尤忠
Original assignee: Rong Base Industrial Technology (jiangsu) Co Ltd
Current assignee: Rong Base Industrial Technology (jiangsu) Co Ltd
Priority date: 2017-04-28
Filing date: 2017-04-28
Publication date: 2017-07-25
Anticipated expiration: 2037-04-28
Also published as: CN106975779B

Abstract

The interior feeding tool of the present invention, knife bar is fixedly connected on inside base of tool central through hole leading portion by knife bar locking member, placement cutter head in the leading portion radial slot of knife bar inside center hole, cutter head medial end guiding surface is engaged with the knife bar push rod being through in knife bar centre bore enables knife bar push rod to promote cutter head radially groove stretching knife bar；Knife bar leading portion outer cover is equipped with knife bar guide sleeve, and the external diameter of knife bar guide sleeve and the hole size of work piece are adapted, and tool feeding precision is high, and working angles are steady；Knife bar is inserted to be positioned in workpiece hole to be added by knife bar guide sleeve, is not required to adjust concentricity repeatedly, positioning is convenient；Guide sleeve make it that knife bar is steady relative to the running orbit of workpiece, and machining accuracy is high, and processing surface evenness is good, improves the symmetry of keyway processing；The cost of charp tool is cheap, and convenient processing and manufacture is quick, adapts to different processing apertures, width of keyway, blind hole, stepped hole arc groove, helicla flute can be processed.

Description

Interior feeding tool

Technical field

The present invention relates to a kind of interior feeding tool.

Background technology

The cutter for being used to process the endoporus such as key, groove in the prior art typically draws group mode broach-milling to go out in keyway using slotting tool Hole, draws workpiece when dialling slot to be fixed by method of clamping, and slotting tool stretches into inside workpiece by dialling processing keyway to pull back；Slotting tool Knife bar diameter need to be less than inner hole of workpiece diameter, knife bar vacantly constitutes cantilever beam structure, causes arbor stiffness poor, in process Easily occur allowing knife and influenceing machining accuracy, processing surface roughness is low, working axiality it cannot be guaranteed that, adjustment is difficult, need to be in processing It is preceding to workpiece carry out repeatedly adjustment position, the low and traditional slotting tool of processing efficiency to the region between the heart and the diaphragm hole on workpiece inner face, stepped hole, The processing difficulties such as inner groove surface.

The content of the invention

The technical problems to be solved by the invention, which are to provide one kind, can process internal bore groove, process stable cutting, plus Work precision is high, and crudy is good, and workpiece axiality is easy to ensure, the high interior feeding tool of clamping efficiency.

The interior feeding tool of the present invention, including the base of tool, the base of tool are arranged in fixed seat by flange, base of tool center With through hole, through hole leading portion positioned inside has knife bar, and knife bar is fixedly connected on base of tool leading portion by knife bar locking member；In knife bar Portion has centre bore along its length, and centre bore front-end position, which is provided with radial slot, groove, is mounted with cutter head, cutter head medial end tool There is guiding surface, guiding surface is engaged with the cutter head push rod being through in knife bar centre bore enables cutter head push rod to promote cutter head Radially groove stretches out knife bar；Knife bar leading portion outer cover is equipped with knife bar guide sleeve, the external diameter of knife bar guide sleeve and work piece it is interior Hole size is adapted, and knife bar guide sleeve also has the hole that knife bar guide sleeve is passed for cutter head with knife bar radial slot relevant position；Knife Base of tool push rod is provided with after the bar of the crown, base of tool push rod withstands on cutter head push rod rear end through base of tool interior bone；

Compression reseting spring is provided between cutter head push rod afterbody and knife bar rear end face；

Compression reseting spring is provided between base of tool push rod afterbody and base of tool rear end face；

Elastic cutter head return tabletting is provided with knife bar, return tabletting back segment is screwed on cutter head push rod, leading portion stretches out It is pressed on cutter head.

The interior feeding tool of the present invention, tool feeding is driven by servomotor completely, and feed accuracy is high, and working angles are put down Surely；Knife bar is inserted to be positioned in workpiece hole to be added by knife bar guide sleeve, is not required to adjust concentricity repeatedly, positioning is convenient；Guide sleeve So that knife bar is steady relative to the running orbit of workpiece, machining accuracy is high, and processing surface evenness is good, improves keyway processing Symmetry；And the cost of charp tool is cheap, convenient processing and manufacture is quick, and knife bar can adapt to different processing apertures, the knife of width of keyway Bar guide sleeve, bit replacing, reconditioning simple and fast coordinate special purpose machine tool, can carry out inner groove surface to blind hole, stepped hole and add Work, can also carry out shaped face such as arc groove, the processing of helicla flute.

Brief description of the drawings

Fig. 1 is the interior feeding tool planar structure schematic diagram of the embodiment of the present invention.

Embodiment

As illustrated, a kind of interior feeding tool, including for coupling special purpose machine tool main shaft and process tool, and can be quick The base of tool 5 of more changing knife rod, the base of tool 5 is arranged in special purpose machine tool main shaft fixed seat by the base of tool screw 4 on ring flange, By the location and installation of positioning key 3 when installing fixed, base of tool positioning key 3 is used to ensure that the base of tool 5 is installed with special purpose machine tool main shaft Position, the base of tool 5 passes through；The center of the base of tool 5 has through hole, and through hole leading portion positioned inside has knife bar 13, and knife bar 13 passes through knife bar Locking member 7 is fixedly connected on the leading portion of the base of tool 5；The back segment of knife bar 13 is stretched into inside the base of tool 5, and posterior segment is provided with what is be relatively large in diameter The shaft shoulder, shaft shoulder external peripheral surface, which has, also has fastening external screw thread, knife on fastening external screw thread, the leading portion external peripheral surface of the base of tool 5 Fastening thread parameter on the shaft shoulder of bar 13, the leading portion external peripheral surface of the base of tool 5 is consistent, the inner hollow of knife bar locking member 7 and interior table There is the internal thread being engaged with the fastening external screw thread on the shaft shoulder of knife bar 13, the leading portion external peripheral surface of the base of tool 5, knife bar 13 on face The leading portion of the base of tool 5 is fixedly connected on by external screw thread and the screw-internal thread fit of knife bar locking member 7；Knife bar locking member 7 has double nut Structure, is connected through a screw thread installation knife bar 13 and can lock, prevent knife bar 13 from being loosened in keyway process.

There is centre bore along its length, centre bore front-end position is provided with radial slot, groove and is mounted with energy inside knife bar 13 Enough insertion inside workpiece dials the cutter head 12 of processing work piece inner surface keyway by drawing；It is coated with the centre bore of knife bar 13 for transmitting Special purpose machine tool Spindle control tool feeding direction and the amount of feeding are to cutter head push rod 10, and cutter head push rod front end face is inclined-plane, cutter head 12 Medial end has guiding surface, and the guiding surface of the medial end of cutter head 12 is engaged so that knife with the front end inclined-plane of cutter head push rod 10 Crown bar 10 can promote cutter head 12, and radially groove stretches out knife bar 13, and cutter head push rod 10 is transmitted from machine tool chief axis to cutter head 12 Direction of feed and the amount of feeding, by the relative movement of leading portion inclined-plane and cutter head rear ramped surface, are converted into the dynamic of the front and rear feeding of cutter head Make.

The leading portion outer cover of knife bar 13 is equipped with knife bar guide sleeve 14, the external diameter of knife bar guide sleeve 14 and the endoporus chi of work piece It is very little to be adapted, according to the supporting knife bar guide sleeve 14 of inner hole of workpiece size selection need to be processed, it is ensured that knife bar 13 and cutter head 12 are in processing During running orbit it is steady, knife bar guide sleeve 14 also has with the radial slot relevant position of knife bar 13 passes knife bar for cutter head 12 The hole of guide sleeve 14；Base of tool push rod 1 is provided with after cutter head push rod 10, base of tool push rod 1 is withstood on through the interior bone of the base of tool 5 The rear end of cutter head push rod 10.

Compression reseting spring 6 is provided between the afterbody of cutter head push rod 10 and the rear end face of knife bar 13, compression reseting spring 6 is provided The reset power of bit shank 10；Compression reseting spring 2 is provided between the afterbody of base of tool push rod 1 and the rear end face of the base of tool 5；For The return of base of tool push rod 1, is prevented because the amount of feeding is abnormal caused by the own wt of base of tool push rod 1；Bullet is provided with knife bar 13 Property cutter head return tabletting 11, the back segment of return tabletting 11 is screwed on cutter head push rod 10, and leading portion, which stretches out, to be pressed on cutter head 12, When cutter head push rod 10 resets, cutter head 12 is pushed down in return tabletting 11 enables a cutter head 12 to retract inside knife bar 13.

The interior feeding tool of the present invention, tool feeding is driven by servomotor completely, and feed accuracy is high, and working angles are put down Surely；Relative to the processing mode of traditional slotting machine, the cutter hub intensity of interior feeding tool is higher, and noose is oriented to as a result of knife bar Structure, knife bar is more reasonable relative to the running orbit of workpiece, eliminate due to cutter hub intensity deficiency cause machining accuracy it is low, plus The low situation of work surface roughness, in particular improves the symmetry of keyway processing；Cutter head uses quick change construction, changes cutter head convenient Fast；Knife bar is inserted to be positioned in workpiece hole to be added by knife bar guide sleeve, and workpiece positioning more facilitates, and need to only insert knife bar Cutter and workpiece positioning can be completed in workpiece hole to be added, common scroll chuck clamping workpiece is can use after the completion of positioning, is not required to Installation concentricity is adjusted repeatedly to workpiece as traditional slotting machine, is not required to adjust concentricity repeatedly, and positioning is convenient；Guide sleeve causes Knife bar is steady relative to the running orbit of workpiece, and machining accuracy is high, and processing surface evenness is good, improves the symmetrical of keyway processing Degree；And the cost of charp tool is cheap, convenient processing and manufacture is quick, and knife bar can adapt to different processing apertures, the knife bar of width of keyway and lead To set, the single knife bar shank guide different by changing can process the product of multiple aperture and width of keyway；Bit replacing, Reconditioning simple and fast, coordinates special purpose machine tool, and the processing of inner groove surface can be carried out to blind hole, stepped hole, shaped face can also be carried out Such as arc groove, the processing of helicla flute.

Claims

1. a kind of interior feeding tool, including the base of tool（5）, the base of tool（5）It is arranged on by flange in fixed seat, the base of tool（5） Center has through hole, and through hole leading portion positioned inside has knife bar（13）, knife bar（13）Pass through knife bar locking member（7）It is fixedly connected on knife Has seat（5）Leading portion；Knife bar（13）Internal to have centre bore along its length, centre bore front-end position, which is provided with radial slot, groove, pacifies It is equipped with cutter head（12）, cutter head（12）Medial end has guiding surface, and guiding surface is with being through knife bar（13）Knife in centre bore Crown bar（10）It is engaged so that cutter head push rod（10）Cutter head can be promoted（12）Radially groove stretches out knife bar（13）；Knife bar（13） Leading portion outer cover is equipped with knife bar guide sleeve（14）, knife bar guide sleeve（14）External diameter and work piece hole size be adapted, Knife bar guide sleeve（14）With knife bar（13）Radial slot relevant position, which also has, supplies cutter head（12）Pass knife bar guide sleeve（14）Hole； Cutter head push rod（10）After be provided with base of tool push rod（1）, base of tool push rod（1）Through the base of tool（5）Interior bone withstands on cutter head Push rod（10）Rear end.

2. interior feeding tool according to claim 1, it is characterised in that：Cutter head push rod（10）Afterbody and knife bar（13）Rear end Compression reseting spring is provided between face（6）.

3. interior feeding tool according to claim 1, it is characterised in that：Base of tool push rod（1）Afterbody and the base of tool（5）Afterwards Compression reseting spring is provided between end face（2）.

4. interior feeding tool according to claim 1, it is characterised in that：Knife bar（13）On be provided with elastic cutter head return pressure Piece（11）, return tabletting（11）Back segment is screwed in knife bar（13）On, leading portion, which stretches out, is pressed in cutter head（12）On.