CN208866413U - A kind of floating type boring head - Google Patents

Abstract

The technical issues of the utility model provides a kind of floating type boring head, and the boring precision and boring cutter service life that can solve existing boring head are influenced vulnerable to turnover mechanism.A kind of floating type boring head, it includes borer, borer includes boring head ontology, boring head ontology two sides symmetrically offer tool apron fitting groove, tool apron is connected with by pin shaft in tool apron fitting groove, it is characterized by: the side of the shaft of turnover mechanism offers pushing block link slot, end offers fin link slot, pushing block is installed in pushing block link slot, the bottom wall of tool apron spring connection tool apron and tool apron fitting groove, the bottom of tool apron is equipped with fin and passes through the bottom wall elastic connection of tool apron spring and tool apron fitting groove, driving unit drives shaft rotation by push rod, the two sides that pushing block and pushing block link slot offset, the side that fin and fin link slot offset is arc-shaped curved surface, two medial surfaces of fin link slot are inclined-plane.

Description

A kind of floating type boring head

Technical field

The utility model relates to boring machine technical fields, and in particular to a kind of floating type boring head.

Background technique

Floating boring head is suitable for the finishing in hole, and boring head ontology two sides are equipped with the boring cutter that can be turned up or withdraw simultaneously, by The radial force generated when cutting mutually balances each other, and can increase cutting data, and number is refaced in raising, so Boring preciseness is higher.By It is poor in the turnover mechanism stability of traditional boring cutter, it is easy to influence the precision of boring and the service life of boring cutter.

Utility model content

In view of the above-mentioned problems, the utility model provides a kind of floating type boring head, the boring essence of existing boring head can solve The technical issues of degree and boring cutter service life are influenced vulnerable to turnover mechanism.

Its technical solution is a kind of such, floating type boring head comprising borer, the borer include boring head Ontology, boring head ontology two sides symmetrically offer tool apron fitting groove, and the tool apron fitting groove is interior to be connected with tool apron by pin shaft, institute It states tool apron boring cutter is installed and can turn up or withdraw under the action of turnover mechanism, it is characterised in that: the turnover mechanism includes Push rod, shaft, tool apron spring and driving unit, the push rod are installed in first mounting hole parallel with axis of boring head ontology And be pressed by push rod spring elasticity, the push rod is equipped with the shaft link slot that axially extends, in the shaft link slot Between position be equipped with pushing block, the shaft is installed in the second mounting hole with diameter parallel of the boring head ontology, the shaft Side offer pushing block link slot, end offers fin link slot, the pushing block is installed in the pushing block link slot, institute The bottom wall that tool apron spring connects the tool apron and the tool apron fitting groove is stated, the bottom of the tool apron is equipped with fin and passes through tool apron The bottom wall elastic connection of spring and the tool apron fitting groove, the driving unit drives shaft to rotate by push rod, when fin contract When together in the fin link slot, the tool apron is in retracted state under the action of tool apron spring, when fin and the shaft End face when offseting, the tool apron overcomes the effect of tool apron spring to be in state of turning up；

The side that two sides, the fin and the fin link slot that the pushing block and the pushing block link slot offset offset Face is arc-shaped curved surface, and two medial surfaces of the fin link slot are inclined-plane.

Further, the boring head further includes boring bar female connector and rolling device, the boring bar female connector and the boring head ontology It is fixedly connected, the rolling device is installed on the periphery of the boring bar female connector, and the driving unit includes piston rod, piston, gas Cylinder spring and valve end cap, the piston rod connect the piston and are installed on the boring jointly with the piston, cylinder spring In bar female connector, the both ends of the cylinder spring abut against the piston and the boring bar female connector internal end surface, the valve end respectively Lid is installed at the lower ending opening of the boring bar female connector.

Further, the rolling device includes tapered sleeve, retainer and tapered roller, and the tapered sleeve is socketed on the boring head Female connector is outer and is fixedly connected with the boring head female connector, and the retainer is sheathed on outside the tapered sleeve and can be along the boring head female connector axis To movement, each tapered roller is installed on the retainer, the radially larger one end of the tapered roller and the tapered sleeve it is radial compared with Big one end is reversed and tapered roller outer ledge is parallel with the boring head female connector axis.

The driving unit of the turnover mechanism of the utility model drives shaft rotation by push rod, connects when fin caters to fin When access slot, tool apron is in retracted state under the action of tool apron spring, and when the end face of fin and shaft offsets, tool apron overcomes knife The effect of seat spring, after pin shaft rotation in turning up state, simultaneously as pushing block and pushing block link slot offset two sides, The side that fin and fin link slot offset is arc-shaped curved surface, and two medial surfaces of fin link slot are inclined-plane, pushing block connection Slot can be seamlessly transitted with its side wall in shaft rotation process along the arc-shaped curved surface of pushing block side, and fin link slot is rotated with shaft The arc-shaped curved surface of its inclined-plane and fin side seamlessly transits in the process, keeps fin steady and the stable end face for being connected to shaft, And then the stability of turnover mechanism entirety is effectively improved, reduce the abrasion of associated components, it is ensured that the precision of boring and making for boring cutter Use the service life.

Detailed description of the invention

Fig. 1 is the schematic view of the front view of the utility model.

Fig. 2 is the schematic cross-sectional view of the utility model.

Fig. 3 is partially enlarged structural schematic diagram at A in Fig. 2.

Fig. 4 is that the push rod, shaft and the quick-fried of tool apron of the utility model shine schematic diagram.

Fig. 5 is the shaft of the utility model and the structural schematic diagram of insert.

Specific embodiment

As shown in Fig. 1 ~ Fig. 5, a kind of floating type boring head comprising borer, borer include boring head ontology 1, boring 1 two sides of head ontology symmetrically offer tool apron fitting groove 2, pass through pin shaft 4 in tool apron fitting groove 2 and are rotatably connected to tool apron 3, tool apron 3 pass through the bottom wall elastic connection of tool apron spring (not shown) and tool apron fitting groove 2, and pin shaft 4 is plugged in connection tool apron fitting groove In pin hole 5, tool apron 3 is equipped with boring cutter (not shown) and can turn up or withdraw under the action of turnover mechanism, and turnover mechanism includes Push rod 6, shaft 7, tool apron spring and driving unit, push rod 6 are installed in first mounting hole parallel with axis of boring head ontology And by 27 elasticity press fitting of push rod spring, push rod 6 is equipped with the shaft link slot 8 axially extended, the middle part of shaft link slot 8 Position is equipped with pushing block 9, and shaft 7 is installed in the second mounting hole with diameter parallel of boring head ontology, the second mounting hole and the first peace Dress hole intersects vertically, and the side of shaft 7 offers pushing block link slot 11, end offers fin link slot 12, and pushing block 9 is installed on In pushing block link slot 11, the two sides 10 that pushing block 9 and pushing block link slot 11 offset are arc-shaped curved surface, and tool apron spring connects tool apron 3 With the bottom wall of tool apron fitting groove 2, tool apron spring has the trend for pulling tool apron 3 into tool apron fitting groove 2, and tool apron spring The two sides of the width direction of tool apron 3 are divided into pin shaft 4, the bottom of tool apron 3, which is embedded, is fixed with insert 14, and insert 14 is equipped with convex The side that rib 15, fin 15 and fin link slot 12 offset is arc-shaped curved surface, and two medial surfaces 13 of fin link slot 12 are oblique Face, boring head ontology 1 connect boring bar female connector 16, and driving unit includes piston rod 17, piston 20, cylinder spring 21 and valve end cap 19, piston rod 17 connects piston 20 and is installed in boring bar female connector 16 jointly with piston 20, cylinder spring 21, cylinder spring 21 Both ends abut against piston and boring bar female connector internal end surface respectively, and valve end cap 19 is installed at the lower ending opening of boring bar female connector, and 18 are It is set to the mandril of piston rod end, mandril 18 and push rod cooperate, and 22 be guide sleeve, are installed in boring bar female connector and match with piston rod It closes, the air valve air inlet of valve end cap 19, piston rod 17 advances and by the top of mandril 18 dress push rod 6, and push rod 6 drives 7 up time of shaft Needle rotation, so that fin 15 and the end face 14 of shaft offset, tool apron 3 overcomes the effect of tool apron spring, is in after pin shaft rotation It turns up state, the thrust of mandril 18 and piston rod 17 disappears, and push rod 6 drives shaft 7 counterclockwise under the action of push rod spring 27 Rotation, fin 15 cater to fin link slot 12, tool apron 3 under the action of tool apron spring, after pin shaft rotation in withdrawing shape State.

Boring head further includes rolling device, and rolling device is installed on the periphery of boring bar female connector, specifically, rolling device includes cone Set 25, retainer 23 and tapered roller 24, tapered sleeve 25 are socketed on outside boring head female connector 16 and are fixedly connected with boring head female connector 16, keep Frame 23 is sheathed on outside tapered sleeve 25 and can move axially along boring head female connector 16, and 26 be the guiding trestle being slidably matched with retainer, respectively Tapered roller 24 is installed on retainer, and the radially larger one end of tapered roller 24 one end radially larger with tapered sleeve 25 is reversed And tapered roller outer ledge is parallel with boring head female connector axis；When boring head ontology drives boring bar female connector to advance, retainer phase To moving back, tapered roller and tapered sleeve are in retracted state without effect at this time, when boring head ontology drives boring bar female connector to move back, circle The hole wall for boring roller and workpiece to be processed interacts, and retainer is opposite to move forward, and drives tapered roller to stretch out, tapered roller and hole Wall interference fit completes rolling operation by the rotation of boring head entirety.

Claims (3)

1. a kind of floating type boring head comprising borer, the borer include boring head ontology, and boring head ontology two sides are symmetrical Ground offers tool apron fitting groove, and the tool apron fitting groove is interior to be connected with tool apron by pin shaft, and the tool apron is equipped with boring cutter and energy Turn up or withdraw under the action of turnover mechanism, it is characterised in that: the turnover mechanism include push rod, shaft, tool apron spring and Driving unit, the push rod are installed in first mounting hole parallel with axis of boring head ontology and are pressed by push rod spring elasticity Dress, the push rod are equipped with the shaft link slot that axially extends, and the intermediate position of the shaft link slot is equipped with pushing block, and described turn Axis is installed in the second mounting hole with diameter parallel of the boring head ontology, and the side of the shaft offers pushing block connection Slot, end offer fin link slot, and the pushing block is installed in the pushing block link slot, and the tool apron spring connects the knife The bottom wall of seat and the tool apron fitting groove, the bottom of the tool apron are equipped with fin and by tool apron spring and the tool apron fitting grooves Bottom wall elastic connection, the driving unit by push rod drive shaft rotate, when fin caters to the fin link slot, The tool apron is in retracted state under the action of tool apron spring, when the end face of fin and the shaft offsets, the tool apron The effect of tool apron spring is overcome to be in state of turning up；

The side that two sides that the pushing block offsets with the pushing block link slot, the fin and the fin link slot offset is equal Two medial surfaces for arc-shaped curved surface, the fin link slot are inclined-plane.

2. a kind of floating type boring head according to claim 1, it is characterised in that: the boring head further includes boring bar female connector and rolling Pressure device, the boring bar female connector are fixedly connected with the boring head ontology, and the rolling device is installed on the outer of the boring bar female connector Week, the driving unit include piston rod, piston, cylinder spring and valve end cap, the piston rod connect the piston and with The piston, cylinder spring are installed on jointly in the boring bar female connector, and the both ends of the cylinder spring abut against the piston respectively With the boring bar female connector internal end surface, the valve end cap is installed at the lower ending opening of the boring bar female connector.

3. a kind of floating type boring head according to claim 2, it is characterised in that: the rolling device includes tapered sleeve, keeps Frame and tapered roller, the tapered sleeve are socketed on outside the boring head female connector and are fixedly connected with the boring head female connector, the retainer It is sheathed on outside the tapered sleeve and can be moved axially along the boring head female connector, each tapered roller is installed on the retainer, the circle The radially larger one end of cone roller and the radially larger one end of the tapered sleeve be reversed and tapered roller outer ledge be with The boring head female connector axis is parallel.