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
  • B25B1/00—Vices
  • B25B1/24—Details, e.g. jaws of special shape, slideways
  • B25B1/2405—Construction of the jaws
  • B25B1/2478—Construction of the jaws with more than one pair of jaws

Definitions

• the invention relates to a multiple vice for clamping a plurality of workpieces according to the preamble of claim 1.
• Such clamping devices are used in manufacturing technology for simultaneous clamping of several workpieces. They generally contain a rail-like base body, on which at least one fixed jaw and a plurality of Nerstell jaws arranged in series are provided, each with a first jaw part that can be fixed relative to the base body and a second jaw part that is adjustable in comparison.
• the connection between the first cheek parts and the base body often takes place via a horizontal mink toothing, which is provided on the upper side of the base body.
• a corresponding toothing is attached to the underside of the first jaw parts for a positive connection to the base body.
• the adjustment jaws can be positioned at different locations on the base body.
• a disadvantage of this solution is that the exposed teeth on the top quickly become dirty due to their exposed position and can also be easily damaged by the workpieces to be clamped. To move the adjustment jaws, they must also be raised by the entire tooth depth of the toothing and only then can they be moved transversely to the toothing.
• a generic multiple clamp in which several clamping jaws arranged in line can be positioned on a rail-shaped base body.
• a rack and pinion connection is provided for the positive connection of the clamping jaws and the base body, which is arranged on the inside of a guide channel running in the base body to avoid dirt or damage.
• the toothed rack connection consists of a toothed rack toothing provided on one side wall of the guide channel, into which a corresponding counter toothing engages on a guide attachment of the clamping jaws which can be displaced within the guide channel.
• a wedge-shaped adjusting device is provided on the opposite side of the guide attachment to the counter-toothing, through which the guide attachment is pressed in the direction of the rack teeth.
• the guide approach must be moved by the entire tooth depth before the jaws can be adjusted.
• the base body is pressed apart during tensioning, which can have an unfavorable effect on the stability.
• a toothed rack with helical teeth is fastened to an inside of a longitudinal guide groove of a base body.
• a corresponding helical toothing engages in this helical toothing on a drive element which is arranged on a movable clamping jaw by means of a clamping screw and can be raised and lowered.
• a lateral wedge effect is exerted on the movable clamping jaw when the clamping piece engages in the rack, as a result of which a high clamping force is achieved.
• the drive element in order to be able to move the movable clamping jaw to a desired position in this known machine vice, the drive element must first be lowered into a lowermost position by a large number of rotations of the clamping screw, which is associated with increased expenditure of time and assembly.
• the object of the invention is to provide a multiple clamp of the type mentioned, which enables quick and easy positioning of the adjustment jaws.
• a major advantage of the multiple clamp according to the invention is that the toothing for positioning the adjusting jaws does not have to be engaged and disengaged over its entire tooth depth.
• the clamping device only has to be loosened slightly and then releases the sliding element for easy pulling out or engagement. This enables particularly quick and safe handling. Due to the central clamping of the sliding element between the two side cheeks pressed inwards, there is also no lateral displacement of the adjusting jaws.
• the bracing of the sliding element between the side cheeks has a positive effect on the stability of the base body. Due to the internal arrangement of the toothing, it is also optimally protected against contamination or damage.
• the clamping device consists of a clamping piece which can be adjusted with the aid of a clamping screw or another suitable clamping device, which engages in a longitudinal groove delimited between the side cheeks and has opposite upper inclined surfaces for contacting corresponding lower inclined surfaces of the two side cheeks.
• a clamping screw By tightening the clamping screw, the side cheeks can be pressed inwards in a simple manner for mutual bracing and the sliding element arranged between them can be clamped. Due to the clamping piece with the inclined surfaces, the clamping forces are divided so that, in addition to a purely vertical clamping force, a resulting transverse force is achieved, which additionally reinforces the positive locking in the toothing and eliminates the toothing play necessary to move the adjusting jaw.
• the adjustment jaws consist of an adjustment jaw body which can be fixed with the aid of the displacement element relative to the base body and a clamping jaw which is arranged on the base in an adjustable manner.
• a contact surface is provided on the adjusting jaw body, which serves as a fixed stop surface for the next workpiece to be clamped.
• the sliding element is connected to a handle element arranged on the upper side of the adjusting jaw for simple actuation.
• the displacement element is expediently connected via two spacer sleeves and fastening screws which can be displaced within the adjusting jaw body.
• the rail-shaped base body consists of a base rail and two rail-shaped side walls, which are screwed to the base rail.
• Such a design ensures the lateral flexibility of the side cheeks.
• This version also has the advantage that the base rail can be replaced relatively easily and adapted to different clamping requirements of the base.
• a base rail provided with indexing bolts, sliding blocks or different grid holes, for example, can be used.
• the base body can also be made in one piece.
• Figure 1 shows a clamping device according to the invention in a perspective view
• Figure 2 shows the clamping device shown in Figure 1 in a longitudinal section
• Figure 3 is a sectional view taken along line A-A of Figure 2;
• Figure 4 is a sectional view taken along line B-B of Figure 2;
• Figure 5 is an enlarged view of the fixed jaw in a longitudinal section
• Figure 6 is an enlarged view of the adjustment jaw in a longitudinal section
• Figure 7 is a sectional view taken along the line C-C of Figure 2.
• the multiple clamp shown schematically in Figures 1 and 2 contains a rail-shaped base body 1 with two spaced-apart side cheeks 2 and 3, on which a fixed jaw 4 and a plurality of adjusting jaws 5 are arranged in series.
• the two side walls 2 and 3 are designed as separate rail-shaped side parts which are fastened to the two sides of a base rail 7 by means of lateral screws 6.
• This design of the base body 1 has, in addition to the simpler production, the additional advantage that the base rail 7 can be easily replaced and the multiple clamps can thus be adapted relatively easily to different clamping requirements.
• a base rail 7 provided with indexing bolts, sliding blocks or different grid holes can be used.
• the base body 1 can also be designed in one piece.
• the two rail-shaped side cheeks 2 and 3 have grooves 8 and extending in the longitudinal direction on the inner sides facing one another opposite lower inclined surfaces 9.
• a toothing 10 is also provided, which extends on both sides of the groove 8 for reasons of simplified production.
• a corresponding counter-toothing 11 engages in the toothing 10 on the upper side surface of the side cheek 2 on a displacement element 12 which can be seen in FIG. 4 and is explained in more detail below, which serves for the positionally accurate connection of the adjusting jaw 5 shown there to the base body 1.
• the base rail 7 has no corresponding counter toothing on the side surface facing the toothing 10. If required, however, counter-toothing could also be provided on the base rail 7.
• a substantially T-shaped longitudinal groove with an upper guide groove 13 between the two upper side surfaces on the inside of the side cheeks 2 and 3 is thus delimited by the base rail 7 and the two side cheeks 2 and 3 screwed thereto.
• a scale 14 is attached as a positioning aid for the workpieces and / or the jaws.
• a corresponding scaling can also be provided on the other side cheek 3.
• indexing bolts 15 are arranged on a lower part for precise fitting.
• the basic body 1 described above can be fastened in a manner known per se via the indexing bolts 15, sliding blocks and the like on a machine table or another suitable base of a processing machine.
• the base body 1 carries the fixed jaw 4 and the adjusting jaws 5.
• the adjusting jaws 5 contain an adjusting jaw body 16 with a lower guide piece 17, which is arranged in the guide groove 13 between the two side cheeks 2 and 3 so as to be displaceable.
• a clamping piece 18 Arranged below the guide piece 17 is a clamping piece 18, also shown in FIGS. 4 and 7, which is held on the adjusting jaw body 16 in a vertically movable manner by a first clamping screw 19.
• the clamping piece 18 shown in cross section in FIG. 7 protrudes with its two outer ends into the two lateral grooves 8 of the side cheeks 2 and 3.
• the clamping piece 18 contains two upper inclined surfaces 20 which come into contact with the lower inclined surfaces 9 of the two side cheeks 2 and 3 when the clamping screw 19 shown in FIG.
• the adjusting jaw body 16 has a straight contact surface 50 on one side and an oblique clamping surface 21 on the other side.
• a groove 22 in the adjusting jaw body 16 the above-mentioned displacement element 12 with the lateral counter-toothing 11 is guided so as to be vertically displaceable between a lower engagement position and an upper release position.
• An inclined surface 23 of a clamping jaw 24 bears against the inclined clamping surface 21 of the adjusting jaw body 16.
• the clamping jaw 24 can be adjusted in the longitudinal direction of the base body 1 by means of a second clamping screw 25 screwed to the clamping piece 18 and running at an angle.
• the second clamping screw 25 By means of the second clamping screw 25, an additional clamping force is also developed via the clamping piece 18, which increases the clamping effect described above.
• the inclined surfaces 21 and 23 are chosen such that the clamping movement is directed downwards and forwards. This prevents the workpieces from being lifted off.
• the opening of the clamping jaw 24 is effected by means of a pin 26 as a driving element.
• a second pin 27, which can be seen in FIG. 7 and engages in a groove 28, serves as a guide and stroke limitation when the clamping jaw 24 is opened.
• the clamping surface 29 of the clamping jaw 24 is preferably profiled, but can be adapted in any way to the clamping requirements (smooth, cambered etc.).
• a top jaw 30 shown in FIG. 6 can optionally be mounted on the clamping surface 29 of the clamping jaw 24. It is intended for cases in which a resulting downward clamping movement is not advantageous. They can be replaced quickly and easily, even without screws.
• a groove 31 and 32 in the side cheeks 2 and 3 shown in FIGS. 3 and 7 is used for this purpose, via which the top jaws 30 can be pivoted in by means of a clamping spring and do not stand out when the clamping jaw 24 is opened. In the horizontal movement (opening of the top jaw), they are held by spring elements 33 shown in FIG. 7, which engage in grooves 34 in the clamping jaw 24.
• the displacement element 12 To raise and lower the displacement element 12, it is connected to a grip element 37 by means of two fastening screws 35 shown in FIG. 4 and two spacer sleeves 36 guided displaceably within the clamping jaw body 16.
• a transverse groove 38 On the upper side of the jaw body 16, a transverse groove 38 is provided for receiving the strip-shaped grip element 37 in the lowered engagement position.
• a stroke limiter 39 for the displacement element 12 is also arranged within the jaw body 16.
• the fixed jaw 4 shown in FIGS. 3 and 5 contains a fixed jaw body 41 which is provided with a stop surface 40 and which rests on the two side cheeks 2 and 3.
• a sliding block 42 On the underside of the fixed jaw body 41, a sliding block 42 is screwed with a side toothing 43 for engagement in the toothing 10 on the inside of the side cheek 2.
• a clamping piece 44 is arranged below the sliding block 42 and is held on the fixed jaw body 41 in a vertically movable manner by two clamping screws 45.
• the clamping piece 44 also has upper inclined surfaces for contacting the lower inclined surfaces of the side cheeks 2 and 3.
• the guide play 46 is designed on the fixed jaw 4 in such a way that it is smaller than that of the adjusting jaw 5. In the clamped state, a necessary basic game 47 remains for the adjusting jaw to actuate the displacement elements 12.
• the sliding block 42 of the fixed jaw cannot be displaced, since here rapid implementation is usually not required. A basic shift, which may be necessary if there is sufficient space, is possible.
• the exact position of the fixed jaw 4 is given by the positive connection with the teeth 10 and 43.
• the positions of the fixed jaw 4 and the adjusting jaw 5 can be read off on edges 48 and 49 of their stop faces on the scale 14 and can be reproduced repeatedly
• the first workpiece is placed on the stop surface 40 of the fixed jaw 4.
• the first adjusting jaw 5 inserted into the longitudinal groove is brought up to the workpiece with the grip element 37 raised and positioned approximately 1-2 mm in front of the workpiece.
• the grip element 37 is then pressed down again into the transverse groove 38 of the adjusting jaw body 16.
• the toothings 10 and 11 are matched to one another in such a way that the displacement element 12 can be displaced without any force when the clamping piece 18 is released.
• the clamping screw 19 is tightened with a predetermined torque.
• the two side cheeks 2 and 3 are pressed inwards and the sliding element 12 located between them is clamped without play.
• the adjusting jaw body 16 is thus also fixed in a positive and non-positive manner.
• the clamping jaws 24 can then be moved and the workpiece can be clamped.
• the straight contact surface 50 of the first adjusting jaw 5 simultaneously forms the fixed stop surface for the next workpiece, which is clamped in a corresponding manner by a second adjusting jaw 5 can be. If, on the other hand, the clamping screw 19 is loosened again, the two side cheeks return to their starting position and release the displacement element 12 for simple displacement.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
• Steering Control In Accordance With Driving Conditions (AREA)
• Coupling Device And Connection With Printed Circuit (AREA)
• Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
• Forklifts And Lifting Vehicles (AREA)
• Load-Engaging Elements For Cranes (AREA)
• Vehicle Body Suspensions (AREA)
• Clamps And Clips (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=32667721

Family Applications (1)

Country Status (5)

Cited By (2)

Families Citing this family (6)

Family Cites Families (8)

• 2003
  • 2003-01-22 DE DE10302255A patent/DE10302255A1/de not_active Withdrawn
  • 2003-12-06 EP EP03815368A patent/EP1622746B1/fr not_active Expired - Lifetime
  • 2003-12-06 DE DE50307440T patent/DE50307440D1/de not_active Expired - Lifetime
  • 2003-12-06 AU AU2003296622A patent/AU2003296622A1/en not_active Abandoned
  • 2003-12-06 AT AT03815368T patent/ATE363965T1/de not_active IP Right Cessation
  • 2003-12-06 WO PCT/EP2003/013854 patent/WO2004065065A1/fr active IP Right Grant

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events