CN1005250B

CN1005250B - Tool clamp fitted on electricity and wind-powered impact driller

Info

Publication number: CN1005250B
Application number: CN85106534.1A
Authority: CN
Inventors: 威尔海姆·吉斯
Original assignee: Licentia Patent Verwaltungs GmbH
Current assignee: Licentia Patent Verwaltungs GmbH
Priority date: 1985-08-30
Filing date: 1985-08-30
Publication date: 1989-09-27
Also published as: CN85106534A

Abstract

The present invention relates to a tool clamping device for electric and pneumatic percussion drill presses, which is provided with a three-jaw clamping head fixed on a sleeve barrel of a main shaft and used for clamping an ordinary drill bit, a combined clamping system universally used for an ordinary drill bit and a percussion drill bit and having no requirements for the diameter of a drill shank, and the combined clamping system can fully utilize impact energy generated in work and use cheep drill bits. When locking a hammer head in the position of an adjusting ring, a three-jaw clamping disc is used for clamping the ordinary drill bit. When three jaws of the clamping head cause the hammer head to freely move in the position of the adjusting ring, the three jaws are inlaid in an axial groove of the percussion drill bit to be used as positioning elements for ensuring that when moving axially, the drill bit can simultaneously move together with the main shaft.

Description

It with. wind the tool clamp on the impact type drilling machine of dynamically working

The invention relates to a kind of being used for the tool clamp on the impact type drilling machine electric, that wind is dynamically working.In this lathe, percussion drill bit is by loading by axially movable tup in collar bush.In this situation, tup is impacted under the reciprocating effect of pneumatic driven plunger.When lathe is used for rotary drilling purely, be arranged in the spherical locking element of rack sleeve groove by means of at least one, tup is locked at makes on its front position that can not play hammer action.This clamping device also has a three-jaw chuck that is fixed on the rack sleeve.

According to the DE-3333856A1 patent, at a kind of moving clamping device that impacts the multiple-grooved drill hammer of drilling machine of electric wind that is used for, tup can be in the drill press spindle sleeve axially moves, and when tup is positioned on the forward position of non-percussive drilling state, can tup be pinned by spherical locking element.

Since need adopt two kinds of mutual incoherent clamping devices for common drill bit and drill hammer when adopting this clamping device, therefore very uneconomical.In addition, the clamping device of drill hammer can only be used for the drill bit of a certain specified diameter, as is used for the drill bit of 10mm, just has to expend more material during less than drillstock at drill bit spiral part diameter, thereby has improved the price of drill bit.

In the CH-PS639578 patent, set forth a kind of chuck mode blade clamping apparatus as annex.Drill chuck is contained on one in this device, and by spline axle connection therewith, when passing through the spline transmitting torque, this axle and chuck base can relatively move.Make the axle of clamping device reciprocating by the toolframe that impacts drilling machine, thereby the pommel of drill bit is impacted.But be provided with rotaring sleeve for tightening and unscrewing claw, this sleeve screws with locating snap ring (adjustable ring just) and is connected, and can move axially under the opposition of back-moving spring with respect to adjustable ring.

This blade clamping apparatus can only be used as annex and use; Here, the axle of clamping device (cylindrical shaft) works to have " tup ", and this can not move on to this forward position of non-percussive drilling state neither the hollow cylindrical shell guide way of non-a certain hammer body again, can not lock it on this position; In addition, this is contained in the toolframe that impacts drilling machine, must make this acceleration by the tup that impacts drilling machine, therefore, has just caused the loss of impact energy before cutter is impacted.

The conversion equipment that is impacted drilling machine by EP0152645 patent being used to of being delivered has two mutual incoherent clamping devices simultaneously, is respectively applied for common drill bit and drill hammer.The clamping device that is used for drill hammer has two roller shape locking elements that are contained in drill press spindle sleeve through hole.The groove of this locking element and drill hammer shank interacts; Be fixed on scroll chuck on the drill press spindle sleeve as the clamping device of common drill bit.When the main regulation sleeve was positioned on the position that the locking element that makes the double flute drill bit unclamps, the adjustable ring that is provided with opening made on the drill chuck base hole in order to the pin that inserts the drill chuck wrench reveal fully.

The objective of the invention is to formulate a kind of combined type clamping device that is used for electricity, pneumatic impact drilling machine, both can be used for common drill bit, can be used for drill hammer again, tup can not only be locked on the position of non-percussive drilling state, and can adopt price lower common drill bit and drill hammer, and can make full use of whole available impact energy from tup.

This purpose can realize by following apparatus of the present invention:

A kind of is tool clamp on the impact drilling machine of dynamically working with electricity, wind, can axially move in the drill press spindle sleeve also and can load on drill hammer under the effect at hammer body at this drilling machine upper ram, and it is reciprocating that hammer body can pass through air rammer; When making simple rotary drilling, can tup be locked on its forward position: in two grooves that spherical locking this moment component position radially is oppositely arranged on the drill press spindle sleeve, abut against on the turnbarrel by spherical locking element; Sleeve is provided with and can makes the radially groove of setback of spherical locking element, thereby unclamps tup; At the sleeve nearside, three-jaw chuck is contained on the drill press spindle sleeve; The special character of this device is: rotating adjustment ring is housed on the base of three-jaw chuck, adjusts ring and engage sleeves, adjustment exposes the hole on the circumference that is positioned at the chuck base when encircling on the position of locking tup, and the hole is in order to insert the dop wrench; Adjusting ring covers the hole when unclamping the position of tup; When the adjustment ring is positioned on the position that locks tup, three-jaw chuck is in order to clamp common drill bit, when the adjustment ring is positioned on the position of unclamping tup, three-jaw chuck is in order to clamp common drill bit, when the adjustment ring is positioned on the position of unclamping tup, the claw of three-jaw chuck is embedded in the axial notch of drill hammer, and allows drill hammer to move axially when rotating synchronously with drill hammer.

The present invention is design and the detailed structure that achieves the above object and adopted, and is described in the following description.

Hereinafter, with figure explanation application example of the present invention.Wherein:

The vertical section of the tool clamp of Fig. 1 electricity, pneumatic impact type drilling machine;

A-A section partial view among Fig. 2 Fig. 1;

B-B cross section view among Fig. 3 Fig. 1;

Fig. 4 adjusts and encircles when being in " boring " position, and the C of clamping device is to external view.

Be contained in the hammer body that can do axially-movable in the cylinder 2 of electricity, pneumatic impact type drilling machine with 1 expression among Fig. 1.This hammer body does not show in the drawings by one, with pneumatic mode work and to convert straight-line piston actuated to by gear-box reciprocating.As long as tup is not locked on its front position that can not play percussion and (sees the first half of Fig. 1 and Fig. 2), hammer body 1 is just passed to its kinergety axially displaceable tup 4 in the rack sleeve 3.

Three-jaw chuck 5 is by one or more counter-sunk screws or adopt tight fit, or the former two is also with being fixed on the rack sleeve 3.Adjust ring 7 and place rotationally on the base 6 of scroll chuck, and be meshed with sleeve 8, or otherwise link and make them not produce relative rotation with interior dog.As seen from Figure 2, sleeve 8 is provided with two tangential recesses 9.Can be in radially entering these two grooves at the spherical locking element of laying in the

end face groove

12,13 of rack sleeve 3 10,11.

If by adjusting ring 7, make sleeve 8 be in the state shown in Fig. 1 first half (and referring to Fig. 2 and Fig. 4), then locking

element

10,11 is radially pressed inwards by the inwall of sleeve, and when tup 4 is in front position, withstand from behind the front portion 4 of tup 4 '.In this case, hammer body 1 bumps less than tup, does not therefore reload.

When adjusting ring 7, when sleeve 8 and tup 4 were in above-mentioned position, the common drill bit 14(of band cylindrical handle saw the first half of Fig. 1) can push the endoporus of rack sleeve.Simultaneously, adjust on the ring breach 15(and referring to Fig. 4) radial blind holes 16 on drill chuck head 6 cylindricals is exposed.The protruding neck 17 of the key 18 of drill chuck head can insert this hole, makes the common drill bit 14 with arbitrary diameter clamped.The impact type drilling machine is with the form work of simple drilling machine like this.

When working, adjust ring 7 drive sleeves 8 and go to the position that makes locking element loosening as the impact type drilling machine.In Fig. 1 Lower Half, this position that also can from Fig. 2, see simultaneously, the groove 9 on the sleeve 8 makes

locking element

16 and 11 loosening again.Like this, they can radially outwards move, and have therefore removed the locking state of tup 4, make its freely-movable vertically again, at this moment, adjust ring and have hidden the blind hole 16 on the drill chuck.

At this moment, the percussion drill bit 20 with three axial grooves 19 can be packed in the endoporus of rack sleeve.Rotate three-jaw chuck with hand, as shown in Figure 3, make three pawls 5 of drill chuck head ', 5 " and 5 " embed in the axial groove 19 of percussion drill bit 20, make their synchronous rotations.And guaranteed that thus drill bit 20 is along these axial groove 19 axially-movables.

Thus, the handle of percussion drill bit is directly loaded by tup, and makes drill chuck head avoid impacting.The impact energy that produces during work can be finished thus and concentrate on the drill bit.

By the fastening spiral 21 of self-locking or by one or more braking members, for example O shape circle 22 prevents that three-jaw chuck from unclamping automatically.

Claims

1, a kind of is tool clamp on the impact type drilling machine of dynamically working with the electric wind, on this drilling machine, tup (4) can axially move in drill press spindle sleeve (3), and can under the effect of hammer body (1), load on drill hammer (20), hammer body (1) can be reciprocating by air rammer; When making simple rotary drilling, can pass through spherical locking element (10,11) tup (4) is locked on its forward position, this moment spherical locking element (10,11) be positioned at two grooves (12 that radially are oppositely arranged on the drill press spindle sleeve (3), 13) in, abut against on the turnbarrel (8); Sleeve (8) is provided with and can makes the radially groove of setback (9) of spherical locking element (10,11), thereby unclamps tup (4); Nearside in sleeve (8); Three-jaw chuck (5) is contained on the drill press spindle sleeve (3); The feature of this device is: on the base (6) of three-jaw chuck (5) rotating adjustment ring (7) is housed, adjust ring (7) and sleeve (8) engagement, adjust ring (7) and the hole (16) on the circumference that is positioned at chuck base (6) is exposed on the position of locking tup (4) time, hole (16) are in order to insert dop wrench (18); Adjusting ring (7) covers hole (16) on the position of unclamping tup (4) time; When adjustment ring (7) is positioned on the position that locks tup (4), three-jaw chuck (5) is in order to clamp common drill bit (14), when adjustment ring (7) is positioned on the position of unclamping tup (4), the claw of three-jaw chuck (5) (5 ', 5 ", 5 ") is embedded in the axial notch (19) of drill hammer (20), and allows drill hammer (20) to move axially when rotating synchronously with drill hammer (20).