EP0070400A2 - Etau - Google Patents

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Publication number
EP0070400A2
EP0070400A2 EP82105440A EP82105440A EP0070400A2 EP 0070400 A2 EP0070400 A2 EP 0070400A2 EP 82105440 A EP82105440 A EP 82105440A EP 82105440 A EP82105440 A EP 82105440A EP 0070400 A2 EP0070400 A2 EP 0070400A2
Authority
EP
European Patent Office
Prior art keywords
sheet metal
metal part
clamping surface
cap
clamp according
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
EP82105440A
Other languages
German (de)
English (en)
Other versions
EP0070400B1 (fr
EP0070400A3 (en
Inventor
Horst Ing. Grad. Klimach
Hans Rösch
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.)
Bessey and Sohn GmbH and Co KG
Original Assignee
Bessey and Sohn GmbH and Co KG
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 Bessey and Sohn GmbH and Co KG filed Critical Bessey and Sohn GmbH and Co KG
Priority to AT82105440T priority Critical patent/ATE18520T1/de
Publication of EP0070400A2 publication Critical patent/EP0070400A2/fr
Publication of EP0070400A3 publication Critical patent/EP0070400A3/de
Application granted granted Critical
Publication of EP0070400B1 publication Critical patent/EP0070400B1/fr
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
    • B25B5/00—Clamps
    • B25B5/16—Details, e.g. jaws, jaw attachments
    • B25B5/163—Jaws or jaw attachments

Definitions

  • the invention relates to a flat clamping screw clamp with a guide rail on which a fixed bracket extending transversely to it is arranged and an approximately parallel sliding bracket is slidably guided, with a nut thread for an approximately parallel to the guide rail screw spindle in a first of the two brackets, in particular the slide bracket, as well as with two clamping surface shoes, one of which is arranged on the second of the two clips and the other on a plate-shaped cap facing one another, in particular rotatably mounted on the screw spindle, and tiltable about axes perpendicular to the plane of the two clips. Screw clamps of this type are also referred to as surface clamps.
  • the clamping surface shoe which is articulated on the fixed bracket with the aid of elongated holes, has a T-profile with a longitudinally divided central web for embracing the fixed bracket, while the other clamping surface shoe has one trough-shaped or trough-shaped, with the bottom of this tub on one the screw spindle rests by means of a type of ball joint rotatably attached, plate-shaped cap and overlaps it and is held with an opening in the tub base on the guide rail extending through this opening.
  • the side walls of the trough at the transition to the trough bottom each have a longitudinal groove into which opposing edge regions of the screw spindle cap engage.
  • the two clamping surface shoes are cast metal parts that still have to be reworked.
  • the known screw clamp is extremely stable and robust, but also expensive to manufacture.
  • the invention was therefore based on the object to change the known flat clamping screw while maintaining its functional properties so that it can be manufactured cheaper, and starting from a screw clamp of the type mentioned, this object can be achieved according to the invention in that the two clamping surface shoes have a sheet metal part and a plastic shell which accommodates the respective clamping surface and that the sheet metal part of the one clamping surface shoe has an opening for articulation on the second bracket, in particular the fixed bracket, and the sheet metal part of the other clamping surface shoe has at least one slot for inserting an edge region of the cap. While the sheet metal part ensures at least essentially the required strength, it can be easily and without using the plastic shell Rework give the clamping shoe the desired shape.
  • the openings for articulating the one clamping surface shoe on the fixed bracket or the slot for securing the clamping surface shoe on the screw spindle cap can be made in the sheet metal part when punching out the sheet metal parts without additional effort.
  • the clamping surface shoes consist of a simple stamped and bent part made of sheet metal and a protective layer or a separately produced plastic part, so that the expensive and still to be machined metal castings of the known screw clamp are eliminated.
  • the sheet metal part could be inserted into a plastic injection mold and at least partially encapsulated with the material forming the plastic shell.
  • the sheet metal part and the plastic shell are manufactured separately from one another and are designed such that the plastic shell can be pushed onto the sheet metal part.
  • Such a plastic shell can then also be secured to the sheet metal part by a simple snap or snap connection.
  • the clamping surfaces must have a certain minimum length, it is recommended with regard to the desired stability of the clamping surfaces to give the sheet metal part a U-shaped cross section at least over part of its length, so that the sheet metal part articulated on the second bracket encompasses this bracket and in its two side walls with holes for a hinge pin can; in this embodiment, the sheet metal part side walls support the longitudinal edge regions of the clamping surfaces. If the sheet metal part of the clamping surface shoe to be attached to the screw cap is also given a U-shaped cross section over at least part of its length for reasons of stability, it is advisable to insert the sheet metal part side walls at the transition to the bottom of the sheet metal part with unevenly long slots parallel to the latter to provide opposite edge regions of the cap.
  • the length of these slots is dimensioned so that the screw cap when inserting the sheet metal part on the screw spindle can be inserted into the longer slot until it can be placed against the bottom of the sheet metal part, whereupon the cap edge is also inserted into the other slot and that Sheet metal part is secured to the cap by placing the plastic shell on the sheet metal part.
  • the invention enables the two clamping surface shoes to be designed identically, as in a particularly preferred embodiment, since it causes no additional costs when punching the sheet metal parts, both to make the holes for articulating the one clamping surface shoe on the fixed bracket as well as the slots for mounting the other clamping surface shoe on the screw spindle cap, so that one and the same sheet metal part can be used for both clamping surface shoes, and the plastic shell can be easily designed so that it can be used for both clamping surface shoes is suitable.
  • these spacing ribs are formed on the inside of the side walls of the plastic shell to form lateral spaces between the sheet metal part and the plastic shell, so that the ends of the pivot bolt forming these bevels or crests can protrude into these intermediate spaces and strictly cylindrical regions of the pivot bolt rest against the sheet metal part.
  • the usual ball-joint-like connection between the screw spindle and the screw spindle cap allows the clamping surface shoe attached to the latter to be tilted, for example in order to be able to clamp workpieces with a wedge-like cross-section over a large area.
  • the screw clamp shown in Fig. 1 consists of a guide rail 10, to which a fixed bracket 12 is integrally formed, and from a likewise known manner on the guide rail 10 longitudinally guided slide bracket 14, which has a nut thread in its free end with a a handle 18 and a cap 20 provided screw 16.
  • the screw spindle 16 has at the top a ball head, not shown in FIG. 1, which the cap 20 engages with in a form-fitting manner, so that it is connected to the screw spindle 16 like a ball joint.
  • the screw clamp now has two identical clamping surface shoes 22 and 24, the shape and structure of which will be explained in more detail below, and the upper of which is articulated to the fixed bracket 12 with a pin 26, while the lower clamping surface shoe 24 is attached to the cap 20 in a manner to be described below the screw 16 is connected. Therefore, the clamping surface shoes 22 and 24 can both be tilted to a limited extent about axes perpendicular to the drawing plane of FIG. 1 relative to the guide rail 10 or the fixed bracket 12 and thus adapt to the shape of objects to be clamped. It is also desirable that at least the clamping surface shoe 24 attached to the cap 20 can tilt to a limited extent around a horizontal axis lying in the drawing plane of FIG. 1 in order to be able to adapt to the workpieces to be clamped.
  • the supporting component of each of the clamping surface shoes is a sheet metal part 30 shown in FIGS. 5 to 7, which according to the invention is used everywhere in the
  • the slot 40 is chosen so long that the cap 20 according to FIG.
  • the cap 5 is inserted obliquely from above between the side walls 34, 36 and then can be inserted into the slot 40 so far that the opposite edge region of the cap 20 of the side wall 36 can be lowered along to the level of the slot 42; by pushing the edge region of the cap 20 into the slot 42, the cap can then be brought into the position shown in broken lines in FIG. 6.
  • the height of the slots 40 and 42 corresponds to the thickness of the edge region of the cap 20 or is slightly larger than the cap thickness.
  • the bottom thereof has a cutout 44 for pushing the clamping surface shoes onto the guide rail 10, as can be seen in FIG. 1.
  • 30 ribs 46 are bent up from the bottom 32 of the sheet metal part and bear against the side surfaces of the guide rail 10.
  • the side walls 34 and 36 of the sheet metal part 30 taper in the direction of the guide rail in order to enable the lower clamping surface shoe 24 to tilt relatively strongly despite the slide bracket 14 (see FIG. 1).
  • a plastic shell 50 shown in FIGS. 8 to 11 gives the clamping surface shoes 22, 24 the desired outer shape; Of course, it can also take on a supporting role in some cases.
  • this plastic shell also has a U-shaped cross section over its entire length with a bottom 52 and side walls 54, 56, but the U profile is closed at the front by an end wall 58 and at the top by a wall 60.
  • the plastic shell 50 is expediently an injection molded part.
  • the bottom 52 of the plastic shell 50 also has a cutout 62 for partially enclosing the guide rail 10 in a fork-like manner, and in order to position the plastic shell and thus the relevant clamping surface shoe in the front region of the fixed bracket 12 in the desired manner in the transverse direction relative to the latter, molded ribs 64 are to be used provided that bear against the side surfaces of the fixed bracket 12. These ribs extend so far in the direction of the cutout 62 that, taking into account the diameter of the cap 20, they can also center the clamping surface shoe 24 on the cap. That is why they are also beveled at the front (see Figure 9 ) .
  • spacing ribs 66 are integrally formed on the inside of the side walls 54, 56.
  • the wall 60 has a cutout 68 for the passage of the screw spindle 16 in the case of the lower clamping surface shoe 24 (see FIG. 1).
  • the plastic shells 50 of the two clamping surface shoes also form the clamping surfaces 70.
  • the side walls 54 and 56 taper in the direction of the cutout 62 in the same way as the side walls 34 and 36 of the sheet metal part 30, so as not to hinder the tilting of the clamping surface shoe.
  • the plastic shell 50 can be pushed onto the sheet metal part in the longitudinal direction from the front (see arrows A in FIGS. 5 and 8) until the catches 38 of the sheet metal part snap into corresponding recesses 72 in the front area of the plastic shell 50.
  • the sheet metal part 30 is then between Bottom 52, the side walls 54 and 56 and the upper wall 60 of the plastic shell 50 caught and is secured against displacement in the longitudinal direction by the end wall 58 and the locking connection 38, 72.
  • the clamping surface shoes 22, 24 are only assembled after the sheet metal parts 30 have been attached to the fixed bracket 12 or the cap 20. In this case, in the case of the upper clamping surface shoe 22, the sheet metal part 30 is pushed onto the fixed bracket 12, as can be seen in FIGS.
  • the side walls 54 and 56 of the plastic shell 50 then secure the cap 20 in the slots 40, 42 of the sheet metal part 30, since the side walls of the plastic shell 50 no longer allow the cap 20 to be pushed further into the slot 49 according to FIG. 6, so that it could leave slot 42.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Wire Bonding (AREA)
  • Clamps And Clips (AREA)
EP82105440A 1981-07-16 1982-06-22 Etau Expired EP0070400B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82105440T ATE18520T1 (de) 1981-07-16 1982-06-22 Schraubzwinge.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813128023 DE3128023A1 (de) 1981-07-16 1981-07-16 "schraubzwinge"
DE3128023 1981-07-16

Publications (3)

Publication Number Publication Date
EP0070400A2 true EP0070400A2 (fr) 1983-01-26
EP0070400A3 EP0070400A3 (en) 1984-01-18
EP0070400B1 EP0070400B1 (fr) 1986-03-12

Family

ID=6136996

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82105440A Expired EP0070400B1 (fr) 1981-07-16 1982-06-22 Etau

Country Status (3)

Country Link
EP (1) EP0070400B1 (fr)
AT (1) ATE18520T1 (fr)
DE (2) DE3128023A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2542241A1 (fr) * 1983-03-08 1984-09-14 Markus Gmbh Heinz Serre-joint a serrage par vis
GB2167996A (en) * 1984-12-10 1986-06-11 Norman Griset Guide clamp
EP0248389A2 (fr) * 1986-06-04 1987-12-09 Bessey & Sohn GmbH & Co. Serre-joint à serrage par vis
WO2009003939A1 (fr) 2007-07-04 2009-01-08 Bessey Tool Gmbh & Co. Kg Serre-joints et procédé de production d'un serre-joints
US8439339B2 (en) 2007-07-26 2013-05-14 Bessey Tool Gmbh & Co. Kg Clamp

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3700955A1 (de) * 1986-01-17 1987-07-23 Bessey & Sohn Beilageschiene
DE19755909A1 (de) * 1997-12-10 1999-06-17 Gotthard Bresch Sich selbst haltende, flexible, variable Zwischeneinlage zwischen Schraubzwingendruckfläche und Werkstück
DE10158005B4 (de) * 2001-11-22 2016-05-19 Bessey Tool Gmbh & Co. Kg Bügelzwinge
DE102007039841B3 (de) * 2007-08-16 2008-09-18 Bessey Tool Gmbh & Co. Kg Zwinge und Verfahren zur Herstellung einer Zwinge

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH425677A (de) * 1963-08-05 1966-11-30 Eugen Dr Mayer Spannzwinge
DE2539613A1 (de) * 1975-09-05 1977-03-10 Bessey & Sohn Spannvorrichtung zum festspannen von werkstuecken
DE2737904A1 (de) * 1977-08-23 1979-03-08 Bessey & Sohn Schraubzwinge
EP0010260A2 (fr) * 1978-10-14 1980-04-30 Bessey & Sohn GmbH. & Co. Serre-joints

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH425677A (de) * 1963-08-05 1966-11-30 Eugen Dr Mayer Spannzwinge
DE2539613A1 (de) * 1975-09-05 1977-03-10 Bessey & Sohn Spannvorrichtung zum festspannen von werkstuecken
DE2737904A1 (de) * 1977-08-23 1979-03-08 Bessey & Sohn Schraubzwinge
EP0010260A2 (fr) * 1978-10-14 1980-04-30 Bessey & Sohn GmbH. & Co. Serre-joints

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2542241A1 (fr) * 1983-03-08 1984-09-14 Markus Gmbh Heinz Serre-joint a serrage par vis
GB2167996A (en) * 1984-12-10 1986-06-11 Norman Griset Guide clamp
EP0248389A2 (fr) * 1986-06-04 1987-12-09 Bessey & Sohn GmbH & Co. Serre-joint à serrage par vis
EP0248389A3 (fr) * 1986-06-04 1989-05-03 Bessey & Sohn GmbH & Co. Serre-joint à serrage par vis
WO2009003939A1 (fr) 2007-07-04 2009-01-08 Bessey Tool Gmbh & Co. Kg Serre-joints et procédé de production d'un serre-joints
DE102007032146A1 (de) * 2007-07-04 2009-01-08 Bessey Tool Gmbh & Co. Kg Zwinge und Verfahren zur Herstellung einer Zwinge
US8439339B2 (en) 2007-07-26 2013-05-14 Bessey Tool Gmbh & Co. Kg Clamp

Also Published As

Publication number Publication date
DE3128023A1 (de) 1983-02-03
EP0070400B1 (fr) 1986-03-12
DE3269799D1 (en) 1986-04-17
ATE18520T1 (de) 1986-03-15
EP0070400A3 (en) 1984-01-18

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