DE2001007B2 - QUICK-CHANGE CHUCK WITH AXIAL LENGTH COMPENSATION - Google Patents

Description

This task is carried out with a quick-change chute

The invention relates to a quick-change chuck with ter of the type mentioned at the outset according to the invention axial length acting on pressure and tension - solved by that on a fixed with the axial movement compensation, consisting of an axial bore 45 borrowed chuck body connected Federbolzcn two having shaft part and an associated prestressed compression springs attached one behind the other Chuck sleeve in which there are quick-change inserts with their recipients facing away from each other Chuck body axially movably received on a support surface at the beginning and men is that with a bolt in the axial bore of the end of the protruding from the chuck body part Shank part engages and support in its Mitteilage by 5 <> dos spring bolts, while the each other Stops de * bolt and the shaft part axially facing spring ends once on one with the acting Federdrv: k is held. Inside the Futtercl.aftes firmly connected bars,

This type of quick-change chuck with an axial and, on the other hand, on one with the spring bolt

Length compensation, as it preferably finds its support surfaces in the second bolt, which is firmly connected to the thread.

cutting on machines with compulsory front 55.

thrust to avoid tool breakage find, compensates for any differences between the one caused by the contact surface of the chuck body on the unThread pitch the machine feed spindle and the lower end of the spring bolt against the one with the chuck The feed movement of the tap and the bolt connected to the shaft are printed, whereas the prevented - with the use of a corresponding 60, pre-tensioned upper compression spring in its position between overload inserts - By acting on pressure see the support surface at the upper end of the Federmcn Length compensation the tool bridge; No sagging when bolting or locking on the spring bolt of the tap to the Bolirungsgrund experiences change.

or if the thread seizes drill; d. H. That is, when the tap is stopped, it stays at the top of the spring through the contact surface and the spindle feed continues. The axial bolt against the one connected to the chuck shaft Length compensation on tension, for example, bars are then printed, whereas the pretensioned lower one effective when the Maschincn pre-compression spring is in its position between the support surface when it returns

there is no change at the lower end of the spring bolt and the latch on the spring bolt.

Because the bolt on the spring bolt is as strong as the bolt in the chuck shaft, the bt the spring ends pressed against the latch in the chuck shaft when the length compensation is not used and press the latch on the spring bolt plane-parallel to the latch in the chuck shaft. Through the an-order of two compression springs pre-tensioned one behind the other in connection with the fully effective both on the io Certain spring bolts as well as those attached in the chuck shaft

slidably ·, strong locks will be published in a simple manner 13 ei ^"w Open bolt 12 extends in the same Stirke that a completely axial backlash is given ,. Snap ring ^s ~ ge _ftbohrung4 fixed latch 8: <nWithout that only a higher assembly costs required as in non-ae strain of L Mn

In order to achieve this goal, it is ^{argued that the} shaft 1 and the chuck body 2

part between the spring ends facing each other, exactly between the two support plates 9

a inner and lower support disc 9 and 10 arranged uu_ ^ ^ guidance of the built-in calls for uen η ^ abutment for the upper

^Ό ™ ** ~? ^ΐα · * _the pederbolzen5 with a head 11 pressure spring _{{Smile Friend ιχ} / is provided, while as and its £ ^u .. ° _tere compression spring ^m in the present abutment * j \ _{"2 with} the bearing surface 13 case α" \ ^ul p _ec i _he by virtue of the prestressed pressure. Thus cue ^^^ _the use of feathers from e _{<i <it to} the spring pin 5 in a fully wirksamiW ^ _{the support} sur fa _c hen 1Ϊ 'and certain α, for example, by a

13 ^another off bolt 12 of the same thickness

bftit bar 8: n

it is to attain this goal part, between the facing spring ends and both inside the shaft and on the spring bolt attached bars each have a support disc for holding and guiding those facing each other Provide spring ends.

As an additional advantage of the implementation according to the application compared to the known structure of Quick change chucks with axial length compensation

is still the possibility of a different ^to ^ ^at .P _n 5f pressure setting for pressure and tension * 5 processing of the two Kitg '· That Vd i Dckfedern precise. 1 wstarkt .x st 11nn

used, shaft 1 and p

exactly the same between ^ ^ ^ two support sheets the same lap- _ ^ _{g jn dfr Sc} haftbohru. _t and 10 like <-> - stress on one of the K-

takes, i 1 in 1. '^. ^^ _d £ _{r group} [12 on the spring:

c " ¹ r ht

zens <.!

the. indcnicrg ^ / ^ Ad ... ^ nu u ¹ ^ .., by the Abii.

^To ^ ^ans .P ^r " ^ch _n ^U 5f" n2 and 8 on the reciprocal direction of the two Kitg '· _Shfb hn 4

_d £ _{r team} [12 on the spring of the unused: Auseangslage holds u. k / ^ _and Fig. 3 "

exactly. 1 wstarkt ^
axial ipu-i ae - _rucn

p boWenr. be »

To name the pressure setting for printing and Zgpg. By using two compression springs with different lengths or uneven wire diameters, the pressure can be used

for compressive and tensile loads differently entered gi ¹ * ^ * _p Ji ^g J, as it is necessary in given cases 30 10 as a criL. »N siLii ^

Acting as another additional benefit from the construction

the subject of the registration under special operational conditions of use can be carried out by relocating the spring bolt stop bar the way for both

Excavations (pressure and tension) changed

by lengthening one direction of travel and shortening the other direction of travel.

An embodiment of the invention is shown in the dll d id i fld äher ^ _n 5fn2 and 8 due to the two kitg '· _{def shaft} bore 4, .n

exactly. 1 wstarkt .x st 11nn ^ , ^ _{his led} , ... axiales ipu-i ae-d Iü

_rucnung des I.üngenau ^ _the ^g _{supporting disk} 9 u; i

_ieSt

6 and 7 guarantee

Werder ^ divorced

at pg because here

An embodiment of the invention is shown in the drawing and will be described in more detail below _{by means of springs with Vtfr} .

from each other. _{so is} t uamit one at the printing and oefes is b -mainly

to achieve switching from the

^ i? ^ iSn £ ialschn, tt through the lining at Non-use of the length compensation,

Fig. 2 the chuck under pressure loading of the length compensation in the end position,

A ^g bb.3 ⁸ the chuck under tensile load of the

dung ^ The in
Bolt 12 am

brought that for | _{and train) the}

By changing

ScSlt: ^ r £ from the shaft and the chuck body 2, which is axially movably arranged in a known manner in the lower part of the shaft and in which there is a bore 3 for receiving tines known, commercially available quick-change assembly. An axial bore 4 is provided in the interior of the shaft, into which the feed head 5 with the chuck basket 2 protrudes

cue gt and the off

tion 4 provided, in which the with the F

protrudes by 2 firmly connected spring bolts 5. At 55 depths

SSSSS ^ Suiön ^ Cutting ratio ^^^^ T ^ ¹ Jd "^ length compensation adapted to senwerder, dlh the long ^

Pressure can pave the way to * ™ «J ^en ° _{h on z}

zu * ™ «J ^en ° _{h to z} ^ μ d kü We |

Pressure spring 6 and 7 is supported. One axially movable 65 each

For this 1 sheet of drawings

Claims (4)

1 2 feed spindle of the tap is based on the patent claims: cut thread moved out and due to special circumstances, such as 1. Quick-change chuck with a pressure on men of chip material happens, is inhibited. and tensile axial length compensation, loading 5 There are several types of quick-change chucks !! standing from a having an axial bore - this design is known. The feed after the franden Shank part and an associated French patent 1193 303, however, has the terhülse, in which a quick-change insert on- Disadvantage that it is due to the arrangement of the recesses Chuck body axially movable equalizing spring has a very great length and then is that with a bolt in the axial io through on machines where the distance from the bore of the shaft part engages and not enough in its drill spindle to accommodate the workpiece Middle position due to stops of the bolt and is large, cannot be used; on the other hand of the shaft part axially acting spring pressure is increased - mainly with horizontal spinning is characterized by the fact that your - the risk of misalignment with increasing on the spring bolt (5) two pre-tensioned 15 distance between the tool leading edge and the Bohrspin compression springs (6 and 7) attached one behind the other del. with their facing away from each other. In another quick-change chuck of this type Ends of one s on a support surface (H ') of the (German Auslegeschrift 1 286 877 J is thereby. DaD Spring bolt (5) and on the other hand on the support - this chuck only works with a compensating spring support surface (13) of the chuck body (2), because 20 requires that the length of the pretensioned spring m \ gen the mutually facing spring ends on which their end rings in the installed state gc with the feed shaft (1) firmly connected bolt exactly with the distance between the two stops ti. (8) and the shaft bore firmly connected to the spring bolt (5) must match, otherwise a: where bolt (12) find their support surfaces. axial play occurs, which when using the chuck 2. Quick-change chuck according to claim 1, there- fore 25 on automatic machines to 'program-controlled machines characterized in that between the Federen- through the exact settings of the work paths the and the bolts (8 and 12) each have an axially harmful effect in terms of production technology and therefore ei ;: movable support-heibe (9 and 10) is arranged. precise dressing of the enclosed spacer bushes 3. Quick-change chuck according to claim 1 and 2, makes necessary before the Fut'ermontage, whereby the thereby g (characterize ^ that ^ e two Druckfe- 30 assembly costs are obviously more expensive,
Their (6 and 7) different lengths or diameters. Another disadvantage of this chuck is that the wire diameters differ. through the use of only one spring, an approved 4. Quick change chuck according to claim 1 to 3, NEN cases required different setting, characterized in that the bolt (12) in the spring pressure in the respective compression or tension spring bolt (5) at different distances to the 35 stress of the chuck is not possible.
Support surface (11 ') of the spring bolt head (11) The invention is based on the object of pressure-attached quick-change chucks with length compensation on and to the support surface (13) of the chuck body (2). and tensile stress to create which is due to the fact that there is no axial backlash with a simple structure 40 distinguishes itself, with a higher installation effort ruled out.