EP4100207A1 - Serre-joint à vis - Google Patents

Serre-joint à vis

Info

Publication number
EP4100207A1
EP4100207A1 EP21701469.5A EP21701469A EP4100207A1 EP 4100207 A1 EP4100207 A1 EP 4100207A1 EP 21701469 A EP21701469 A EP 21701469A EP 4100207 A1 EP4100207 A1 EP 4100207A1
Authority
EP
European Patent Office
Prior art keywords
lifting element
clamping
threaded
threaded lifting
slide rail
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.)
Granted
Application number
EP21701469.5A
Other languages
German (de)
English (en)
Other versions
EP4100207B1 (fr
Inventor
Albert Lapp
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.)
CNC Technik Lapp GmbH
Original Assignee
CNC Technik Lapp GmbH
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 CNC Technik Lapp GmbH filed Critical CNC Technik Lapp GmbH
Publication of EP4100207A1 publication Critical patent/EP4100207A1/fr
Application granted granted Critical
Publication of EP4100207B1 publication Critical patent/EP4100207B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/10—Arrangements for positively actuating jaws using screws
    • B25B5/102—Arrangements for positively actuating jaws using screws with at least one jaw sliding along a bar
    • 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
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/10—Arrangements for positively actuating jaws using screws
    • 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
    • B25B5/00—Clamps
    • B25B5/06—Arrangements for positively actuating jaws
    • B25B5/10—Arrangements for positively actuating jaws using screws
    • B25B5/101—C-clamps
    • 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
    • B25B5/00—Clamps
    • B25B5/16—Details, e.g. jaws, jaw attachments
    • B25B5/166—Slideways; Guiding and/or blocking means for jaws thereon

Definitions

  • the invention relates to a screw clamp according to the preamble of claim 1.
  • the slide rail of the adjustable tensioning arm has anti-slip protection which, when the slide rail is inclined, tilts with a counter-contour of the recess formed in the stationary tensioning arm.
  • the object of the invention is to provide a screw clamp which is functionally expanded compared to the prior art and in particular provides an alternative screw clamp structure for special workpiece geometries.
  • the object of the invention is achieved by the features of claim 1.
  • Preferred developments of the invention are disclosed in the subclaims.
  • the invention is based on a screw clamp in which at least one of the two clamping arms can be adjusted by means of a clamping unit that can be manually operated to rotate about an axis of rotation by an axial adjustment path. During a clamping process, a clamping force acting on the workpiece is built up.
  • the clamping unit is implemented as a screw drive. This has a radially outer adjusting sleeve with at least one internal thread and with at least one radially inner threaded lifting element. The external thread of the threaded lifting element is in threaded engagement with the internal thread of the adjusting sleeve.
  • the radially inner threaded lifting element can be connected to the adjustable clamping arm in a force-transmitting manner (in particular via a slip protection).
  • the adjusting sleeve is rotatably actuated during a clamping process.
  • the threaded lifting element together with the clamping arm connected to it, is adjusted by the axial adjustment path against the workpiece under tension build-up.
  • the threaded lifting element can be firmly connected to the adjustable tensioning arm. It is preferred, however, if the adjustable tensioning arm has a slide rail which, in the unrestrained state, can be easily adjusted through a recess in the radially inner threaded lifting element.
  • the slide rail of the adjustable clamping arm can have a corrugation to prevent slipping. If the slide rail is inclined, it can tilt with a counter-contour of the recess formed in the threaded lifting element.
  • the recess can be formed axially continuously in the threaded lifting element.
  • the adjusting sleeve can have a first internal thread (e.g. right-hand thread) and an axially adjacent second internal thread (e.g. left-hand thread) in opposite directions. These are each threadedly engaged with a first threaded lifting element and with a second threaded lifting element.
  • the first threaded lifting element and the second threaded lifting element can each be connected in a force-transmitting manner to one of the adjustable tensioning arms.
  • the clamping arms can each be positioned on axially opposite end faces of the adjusting sleeve.
  • the two threaded lifting elements can each be moved towards one another by an adjustment path by means of a rotary actuation of the adjusting sleeve. Conversely, when the adjusting sleeve is actuated in opposite directions, the two threaded lifting elements can each be moved away from one another by an adjusting path.
  • the slide rail of the first adjustable tensioning arm which is guided through the recess of the first threaded lifting element, can extend with a slide rail protrusion beyond the first threaded lifting element. In this case, the overhang of the slide rails can create an interfering contour for the adjacent second
  • the second threaded lifting element can have a clearance into which the slide rail protrusion can protrude without a disruptive contour.
  • the slide rail of the second adjustable tensioning arm guided through the recess of the second threaded lifting element can also extend with a slide rail protrusion beyond the second threaded lifting element.
  • Slide rail overhang form an interfering contour for the first threaded lifting element.
  • the first threaded lifting element can also have a clearance into which the slide rail protrusion can protrude without a disruptive contour.
  • the clearance in the first threaded lifting element and / or in the second threaded lifting element can be dimensioned in such a way that the clearance does not form an interfering contour when the slide rail tilts into its inclined position, in which the slide rail corrugation tilts with the counter contour of the recess in the respective threaded lifting element to prevent slipping to realize.
  • the recess of one threaded lifting element can be aligned in axial alignment with the clearance of the other threaded lifting element. It is preferred if the clearance cross-section in the respective threaded lifting element is dimensioned to be significantly larger than the recess cross-section.
  • a threaded flange provided with an internal thread is formed on at least one of the clamping arms. This can be in threaded engagement with a threaded spindle with a pressure plate.
  • the pressure plate can face the other tension arm. During the tensioning process, the pressure plate of the threaded spindle can be adjusted in stroke for an additional tension build-up by turning it.
  • FIG. 3 shows the screw clamp in a schematic side sectional view
  • 4 shows a detailed view of the screw clamp
  • FIG. 5 shows the screw clamp in the clamped state in a view corresponding to FIG. 3.
  • the screw clamp is shown in a non-tensioned construction position.
  • the screw clamp has two adjustable clamping arms 1, 3 with an intermediate clamping unit 6.
  • Each of the two clamping arms 1, 3 has in FIGS. 1 or 2 a threaded flange 7 which is provided with an internal thread and which is in threaded engagement with a threaded spindle 9 with pressure plate 11, which faces the opposite clamping arm.
  • a workpiece 5 (FIG. 5) can be clamped between the two clamping arms 1, 3.
  • the two tensioning arms 1, 3 can be adjusted by an axial adjustment path Aa ⁇ , Aa 2 (Fig. 5) by means of the tensioning unit 6, which can be manually rotated about an axis of rotation D (Fig. 2), whereby the pressure plates 11 of the two tensioning arms 1 , 3 are pressed against the workpiece 5 and a clamping force acting against the workpiece 5 builds up.
  • the pressure plate 11 On the opposite of the pressure plate 11
  • a tool attachment 13 is designed for a rotary actuation of the threaded spindle 9.
  • the two clamping arms 1, 3 in FIGS. 1 and 2 are each designed with slide rails 15 which extend through the clamping unit 6 in an axial direction.
  • clamping unit 6 The structure of the clamping unit 6 is described below with reference to FIG.
  • each of the two adjusting sleeve internal threads 19, 21 has a first
  • Fig. 3 the screw clamp is shown in the untensioned state. Accordingly, the two slide rails 15 (only one slide rail 15 is shown in FIG. 3) of the left-hand, first tensioning arm 1 can be easily adjusted in a loose fit through a recess 27 of the left-hand, first threaded lifting element 23 out.
  • the slide rail 15 extends in the further course with a slide rail protrusion 29 beyond the first, left-hand threaded lifting element 23.
  • the slide rail protrusion 29 protrudes through a clearance 31 of the second, right-hand threaded lifting element 25 without a disruptive contour.
  • the slide rail 15, not shown in FIG. 3, of the right-hand, second tensioning arm 3 is guided in a loosely adjustable manner through a recess 27 of the right-hand, second threaded lifting element 25.
  • the slide rail 15 extends in the further course (to the left in FIG. 3) with a slide rail protrusion 29 (not shown in FIG. 3) beyond the second, right-hand threaded lifting element 25.
  • the slide rail protrusion 29 also protrudes through a clearance 31 (not shown in FIG. 3), which is formed in the first, left-hand threaded lifting element 23, without a disruptive contour.
  • the slide rail 15 of the left-hand, first tensioning arm 1 in FIG. 3 has a corrugation 33.
  • the corrugation 33 tilts with a mating contour 35 of the recess 27 formed in the first threaded lifting element 23 provided.
  • both the first threaded lifting element 23 and the second threaded lifting element 25 each have a recess 27 and a clearance 31.
  • the recess 27 of the one threaded lifting element 23 is aligned in axial alignment with the clearance 31 of the other threaded lifting element 25.
  • the clearance 31 in a threaded lifting element 23 is so large that it does not Interfering contour during a tilting movement K of the slide rail 15 in its inclined position (FIG. 5).
  • the slide rail corrugation 33 tilts with the mating contour 35 of the recess 27 in the respective threaded lifting element 23, 25 in order to provide a slip protection.
  • the workpiece 5 is first positioned between the two pressure plates 11 of the clamping arms 1, 3.
  • the two clamping arms 1, 3, which have not yet been tilted, are then pressed smoothly into contact with the workpiece 5. This results in a slight tilting movement K (FIG. 5) of the two clamping arms 1, 3, as a result of which the slide rail corrugations 33 with the corresponding counter contours 35 of the two threaded lifting elements 23, 25 cant.
  • the respective tensioning arm 1, 3 is connected to the associated threaded lifting element 23, 25 in a non-positive manner.
  • the adjusting sleeve 17 is then actuated to rotate, whereby the two threaded lifting elements 23, 25 move from their initial position (FIG. 3) by the adjusting path Aai, ⁇ a 2 (shown exaggeratedly large in FIG. 5) towards one another, while building a on the workpiece 5 acting clamping force.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)

Abstract

L'invention concerne un serre-joint à vis comprenant deux bras de serrage (1, 3) entre lesquels peut être serrée une pièce ouvrée (5). Dans un processus de serrage, au moins un des bras de serrage (1, 3) peut être déplacé d'une distance de déplacement axial (∆a1, ∆a2) au moyen d'une unité de serrage (6) de sorte qu'une force de serrage agissant contre la pièce ouvrée (5) soit établie, laquelle unité de serrage peut être actionnée manuellement en rotation autour d'un axe de rotation (D). Selon l'invention, l'unité de serrage (6) se présente sous la forme d'un mécanisme entraînement fileté comprenant un manchon de réglage (17) radialement extérieur qui possède au moins un filetage intérieur (19, 21) et comprenant au moins un élément de course fileté (23, 25) radialement intérieur, dont le filetage extérieur est en prise avec le filetage intérieur du manchon de réglage (19, 21) et qui peut être amené en liaison de transmission de force avec le bras de serrage mobile (1, 3). Dans le procédé de serrage, le manchon de réglage (17) est actionné en rotation, l'élément de course filetée (23, 25), conjointement avec le bras de serrage (1, 3) est déplacé contre la pièce ouvrée (5) par la distance de déplacement axial (∆a1, ∆a2).
EP21701469.5A 2020-02-05 2021-01-20 Serre-joint à vis Active EP4100207B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020102910.1A DE102020102910B3 (de) 2020-02-05 2020-02-05 Schraubzwinge
PCT/EP2021/051150 WO2021156053A1 (fr) 2020-02-05 2021-01-20 Serre-joint à vis

Publications (2)

Publication Number Publication Date
EP4100207A1 true EP4100207A1 (fr) 2022-12-14
EP4100207B1 EP4100207B1 (fr) 2026-03-04

Family

ID=74215931

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21701469.5A Active EP4100207B1 (fr) 2020-02-05 2021-01-20 Serre-joint à vis

Country Status (4)

Country Link
US (1) US12330277B2 (fr)
EP (1) EP4100207B1 (fr)
DE (1) DE102020102910B3 (fr)
WO (1) WO2021156053A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202022102543U1 (de) 2022-05-10 2022-06-21 Olaf Bartl Spannsystem
US20240324824A1 (en) * 2023-03-30 2024-10-03 Karen Yolanda Snider Utensils and methods of using the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3414909A (en) * 1966-09-15 1968-12-10 Brearley Co Clamp-on grab bar or rail for bathtubs or the like

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US24194A (en) * 1859-05-31 Joiner s clamp
FR590769A (fr) * 1924-11-14 1925-06-23 Serre-joint à rallonge et coulissant
US1587820A (en) 1925-03-24 1926-06-08 Bernard J Carter Clamp
DE8214309U1 (de) * 1982-05-15 1982-08-26 Bessey & Sohn Gmbh & Co, 7000 Stuttgart Spannwerkzeug, insbesondere schraubzwinge
DE8903875U1 (de) 1989-03-30 1989-12-21 Emil Lux Gmbh & Co Kg, 5632 Wermelskirchen Zwingenvorrichtung
DE29800132U1 (de) * 1998-01-07 1998-03-12 Lasczyk, Peter Paul, 86169 Augsburg Schraubzwinge mit Tiefspannarmen
US6296241B1 (en) * 2000-06-30 2001-10-02 John P. Harrison Adjustable C-clamp
US6481767B2 (en) * 2001-02-15 2002-11-19 Lisle Corporation Battery carrier device
KR101506733B1 (ko) * 2014-07-08 2015-03-30 기언관 나선철근용 철근연결구
US10252401B2 (en) * 2017-02-28 2019-04-09 Chris Lucas Clamping and spreading device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3414909A (en) * 1966-09-15 1968-12-10 Brearley Co Clamp-on grab bar or rail for bathtubs or the like

Also Published As

Publication number Publication date
US20230150095A1 (en) 2023-05-18
DE102020102910B3 (de) 2021-07-01
EP4100207B1 (fr) 2026-03-04
US12330277B2 (en) 2025-06-17
WO2021156053A1 (fr) 2021-08-12

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