EP0232397B1 - Vorrichtung zum setzen von schrauben - Google Patents

Vorrichtung zum setzen von schrauben Download PDF

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Publication number
EP0232397B1
EP0232397B1 EP86905247A EP86905247A EP0232397B1 EP 0232397 B1 EP0232397 B1 EP 0232397B1 EP 86905247 A EP86905247 A EP 86905247A EP 86905247 A EP86905247 A EP 86905247A EP 0232397 B1 EP0232397 B1 EP 0232397B1
Authority
EP
European Patent Office
Prior art keywords
screw
jaws
screws
clamping jaws
stop
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP86905247A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0232397A1 (de
Inventor
Werner Regensburger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SFS Stadler Holding AG
Original Assignee
SFS Stadler Holding AG
SFS Stadler AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SFS Stadler Holding AG, SFS Stadler AG filed Critical SFS Stadler Holding AG
Publication of EP0232397A1 publication Critical patent/EP0232397A1/de
Application granted granted Critical
Publication of EP0232397B1 publication Critical patent/EP0232397B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/02—Arrangements for handling screws or nuts
    • B25B23/04—Arrangements for handling screws or nuts for feeding screws or nuts
    • B25B23/045—Arrangements for handling screws or nuts for feeding screws or nuts using disposable strips or discs carrying the screws or nuts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/02—Arrangements for handling screws or nuts
    • B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
    • B25B23/10—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means

Definitions

  • the invention relates to a device for setting screws, consisting of a screw device, a feed channel for screws and relative to each other in a transverse to the screw axis, common guide, held in the direction of the screw axis spring-loaded jaws for holding the screw, the jaws in the closed state form a multi-step passage opening, which in the closed state of the jaws consists of a first, approximately cylindrical section, a second, funnel-shaped section and a third, approximately cylindrical section.
  • Such devices for setting screws have become known in some design variants.
  • two relatively movable jaws are provided on the part to be screwed, relatively close to the support surface, which are intended to hold the screws until they are drilled or until the thread is gripped.
  • These known arrangements are always pivotable jaws which are pressed apart by the screws to be pressed down or by the screw nut.
  • a screw holder which has an insertion channel lying in the driving axis for inserting and axially aligning a screw.
  • the insertion channel is limited by radially resilient clamping jaws.
  • An inserted screw is to be held and aligned axially by these clamping jaws. This may be possible as long as the engagement tool is not yet in operative connection with the screw, because immediately after the screw is pressed down slightly against the workpiece to be screwed, these clamping jaws are pushed back by the screw head, so that the drill tip of the screw can swing out freely.
  • There is therefore only one holder for the screw but in no case a guide to enable precise drilling of the self-drilling tip.
  • the jaws designed as balls are pushed back as a result of the screw head passing through, there is practically no more guidance in the shaft region of the screw.
  • two spring-loaded jaws are provided for guiding and holding the drill tip of a screw, which jaws are held displaceably in a common guide lying transversely to the screw axis, the passage opening being left free by the two jaws is centered on the screw-in axis again by means of a stop part acting on the jaws.
  • No guide is provided for the screw head. This only causes the two jaws to be pressed apart immediately after hitting an inclined ramp surface.
  • a screwing tool for screws is known (US-A-1 726 693), in which spring-loaded jaws are slidably held in a guide for holding screws during the screwing-in, the jaws in the closed state forming a multi-step passage opening which consists of a first, approximately cylindrical section, a second funnel-shaped section and a third, approximately cylindrical section.
  • a multi-step passage opening which consists of a first, approximately cylindrical section, a second funnel-shaped section and a third, approximately cylindrical section.
  • the present invention has therefore set itself the task of creating a device of the type mentioned, in which an exact setting of screws is possible with structurally simple means. Furthermore, there should be an exact guidance of the screw until the end of the screwing-in process or at least until the drilling tip of the screws is finally drilled.
  • first cylindrical section and the funnel-shaped section are delimited by a curve which is elliptical with a longitudinal axis lying in the screw axis, and in the guide for the two jaws are provided in a plane aligned through the screw axis, common stop elements, which engage in the guide transverse to the direction of displacement of the bakken.
  • the edge-free transition between the individual sections of the through opening makes it easy to actuate the jaws apart.
  • the first, approximately cylindrical section and the subsequent, approximately funnel-shaped section are thereby delimited by an elliptical curve. This prevents jerky movements of the jaws, since the screw head does not hit a stepped surface directly, but the jaws can be pushed apart in an edge-free transition.
  • the device shown in Fig. 1 consists essentially of a screw device 1, which is driven by a motor 2, a z. B. spring-loaded feed guide 3, and a feed device 4 for screws, which are expediently supplied by means of a magazine strip 6.
  • the longitudinal center plane of a feed device 4 is aligned with the screw axis 7.
  • the drive of the screwing device 1 (motor 2) is fastened via a first cross member 8, a clamping bracket being provided by a locking screw.
  • a second cross member 10 is provided, which has a through hole 11 for the screw device 1.
  • the feed device 4 is fastened on this second cross member 10.
  • the cross member 10 and the feed device 4 are mutually connected via a cylindrical bearing body 12, it being conceivable to rotate these two parts against one another.
  • the mutual fixation takes place by means of a spring-loaded ball 13 arranged in the cross member 10.
  • two jaws 14, 15 which are slidably held in a guide 16 running transversely to the screw axis 7. Stop elements 17 engage in the guide 16 and are aligned in a plane guided by the screw axis 7.
  • the two jaws 14 and 15 are also designed spring-loaded in the direction of the screw axis 7, this being expediently accomplished by coil springs 18.
  • two bores 19 are provided on the back of the jaws 14, 15, in which one end of the coil springs 18 is inserted.
  • the other ends of the coil springs 18 are supported on the boundary walls 20 of the guide 16.
  • Groove-like recesses 21 are provided on the outer edge regions of the mutually facing ends of the jaws 14, 15, the groove base 22 in each case forming the stop surfaces interacting with the stop elements 17. An exact alignment of the jaws 14, 15 with respect to the screw axis 7 is thus ensured after each screwing operation.
  • the helical springs 18 rapidly return the jaws 14, 15 to the starting position, the abutment surfaces in the groove-like recesses 21 abutting the abutment elements 17. For processing reasons, it is expedient if the groove-like recesses 21 run continuously over the entire height of the jaws 14, 15.
  • the jaws 14, 15 in the closed state form a multi-step passage 25 with cylindrical and funnel-shaped sections.
  • Such a design enables exact guidance and retention of a screw until it is finally set in the part to be screwed. 1 that when the screw 26 is depressed by actuating the screwing device 1, the knob 27 of the screw is fixed on the one hand by the free end area of the screwing device 1 and the drill bit 28 at the same time in the lowermost, approximately cylindrical section 29 comes to rest between the two jaws 14, 15. It is thus possible to drill a hole through the screw even in a state exactly aligned with the screw axis 7.
  • the first, approximately cylindrical section 30 should approximately the head diameter of the screw 26 and the second cylindrical section 29 approximately the diameter of the drill bit 28 or the diameter of the threaded part 32 of the screw 26 correspond.
  • the cross section of the through opening 25 in the upper section corresponds approximately to a half ellipse with the longitudinal axis lying in the central axis. This practically delimits the first cylindrical section 30 and the subsequent funnel-shaped section 31 by an elliptical curve.
  • a more compact design is also possible because the magazine strip 6 can be moved relatively close to the contact surface 35 of the device on the part to be screwed.
  • the groove 34 in the jaw 15 can also be made somewhat wider, since the screws 26 are generally supplied from this side.
  • the groove 35 in the jaw 14 is therefore expedient, for example, to have a discharge channel for parts broken out of the magazine strip 6 or simply because both jaws 14 and 15 can be designed in a simple manner as structurally identical parts. Then, of course, the two grooves 34 and 35 must also be provided with the same cross section.
  • a stop slide 37 which is adjustable relative to the screw axis 7 but lockable on the component 36.
  • This stop slide 37 makes it possible, in cooperation with the exact alignment between the screw axis and screw axis 7, to place a screw 26 exactly at a certain distance from a reference edge, that is to say to drill and screw it in. 4, for example, the distance A between the stop surface 38 of the stop slide 37 and the screw axis 7 is given.
  • the stop slide 37 engages like a clamp in two grooves 39 provided on opposite side boundaries of the component 36.
  • the stop slide 37 can therefore be adjusted as desired in the longitudinal direction of the component 36.
  • clamping screws are provided, which are pressed by the stop slide 37 against the underside 40 of the component 36 or screwed into the component 36.
  • a dimensional scale 41 or 42 can be provided in order to be able to make the exact required setting without long measuring work. It is also possible to pre-fix bores in the stop slide 37 with associated threaded bores in the component 36 see what, after rough adjustment of the corresponding desired dimensions for the distance A, this associated screw is screwed into the associated thread in component 36. However, there are also other adjustment and locking options.
  • FIG. 3 shows an embodiment variant of a magazine strip 6, which has through openings 43 at regular intervals, into which the screws 26 are inserted.
  • This magazine strip 6 is expediently made of a rubable material, so that the screw head 27 can also be rotated through the magazine strip 6 in a simple manner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Transmission Devices (AREA)
  • Screw Conveyors (AREA)
  • Earth Drilling (AREA)
EP86905247A 1985-08-08 1986-07-28 Vorrichtung zum setzen von schrauben Expired EP0232397B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT231685 1985-08-08
AT2316/85 1985-08-08

Publications (2)

Publication Number Publication Date
EP0232397A1 EP0232397A1 (de) 1987-08-19
EP0232397B1 true EP0232397B1 (de) 1989-10-11

Family

ID=3532108

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86905247A Expired EP0232397B1 (de) 1985-08-08 1986-07-28 Vorrichtung zum setzen von schrauben

Country Status (6)

Country Link
EP (1) EP0232397B1 (fi)
AT (1) ATE47070T1 (fi)
AU (1) AU6339586A (fi)
DE (1) DE3666169D1 (fi)
FI (1) FI85234C (fi)
WO (1) WO1987000787A1 (fi)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4240606A1 (de) * 1992-12-03 1994-06-09 Hardo Befestigungen Gmbh Vorrichtung zum Einschrauben von Befestigungselementen

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006046707B3 (de) * 2006-10-02 2007-11-29 Sfs Intec Holding Ag Einrichtung und System zum automatischen Vorschub von Befestigern und dafür geeigneter Magazinierstreifen
CN110977842A (zh) * 2019-12-25 2020-04-10 浪潮商用机器有限公司 一种应用于服务器组件的咬合式紧固件夹紧工装

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1726693A (en) * 1929-09-03 of ikon mountain
US4384403A (en) * 1980-08-18 1983-05-24 Sheldon Robert W Building erection tool
DE3215004A1 (de) * 1982-04-22 1983-10-27 Itw-Ateco Gmbh, 2000 Norderstedt Bohr-schraub-werkzeug
FR2553694B1 (fr) * 1983-10-19 1991-12-13 Sfs Stadler Ag Bande de magasinage pour des vis et appareil d'enfoncement pour les vis amenees dans la bande de magasinage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4240606A1 (de) * 1992-12-03 1994-06-09 Hardo Befestigungen Gmbh Vorrichtung zum Einschrauben von Befestigungselementen

Also Published As

Publication number Publication date
FI85234C (fi) 1992-03-25
ATE47070T1 (de) 1989-10-15
FI85234B (fi) 1991-12-13
EP0232397A1 (de) 1987-08-19
DE3666169D1 (en) 1989-11-16
WO1987000787A1 (en) 1987-02-12
FI871521A0 (fi) 1987-04-07
AU6339586A (en) 1987-03-05
FI871521A (fi) 1987-04-07

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