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
  • B25B1/06—Arrangements for positively actuating jaws
  • B25B1/08—Arrangements for positively actuating jaws using cams
• • 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
  • B25B1/06—Arrangements for positively actuating jaws
  • B25B1/18—Arrangements for positively actuating jaws motor driven, e.g. with fluid drive, with or without provision for manual actuation
• • 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
  • B25B5/061—Arrangements for positively actuating jaws with fluid drive
• • 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
  • B25B5/08—Arrangements for positively actuating jaws using cams
  • B25B5/087—Arrangements for positively actuating jaws using cams actuated by a hydraulic or pneumatic piston

Definitions

• the invention relates to a clamping device with mutually oppositely movable jaws, on which clamping elements can be arranged.
• the jaws are driven by drive elements which are arranged below the jaws. Due to the arrangement of the drive elements below the jaws, the clamping device requires a relatively large amount of space.
• the invention has the object to improve the clamping device of the type mentioned in that future, the required space for the clamping device is reduced.
• the invention achieves the stated object by means of a tensioning device of the type mentioned above, in which, according to the invention, the jaws each have a cavity in which at least one drive, which can be driven by a piston, is located.
• rod for driving the jaws is movable, wherein the direction of movement of the at least one drive rod and the direction of movement of the jaws perpendicular to each other and / or at an angle between 0 ° and 90 ° to each other. Due to the arrangement of the at least one drive rod in the cavity of the jaws, the space for the clamping device may be lower in the future than previously.
• the jaws may have guide slots and / or guide grooves along which guide elements arranged along the at least one drive rod can be moved.
• the guide slots and / or guide grooves can be made relatively simple and therefore inexpensive. They also enable reliable and trouble-free operation if they are provided on the side cheeks of the jaws. An unwanted wobbling of the jaws is thus excluded.
• the guide elements may be feather keys, pins or the like, wherein rollers are storable on the pins. These guide elements are simple, inexpensive standard components. When these guide elements engage in the guide slots and / or guide grooves, they also ensure the reliable and trouble-free operation of the clamping device.
• the at least one drive rod may be bent at an angle. Then you can do without the slots and grooves in the jaws.
• the guide elements can be omitted.
• the jaws can be arranged in a housing which at least partially surrounds them and / or the jaws at least partially surround the housing. This ensures reliable guidance of the jaws so that they can not tilt, wobble or tilt during the process.
• balls and / or rollers and / or pins can be arranged between the jaws and the housing.
• the balls and / or the rollers and / or the pins can be guided in guide inserts, which can be arranged between the jaws and the housing, in order to ensure a reliable and low-friction guidance of the jaws.
• the guide inserts can preferably be made of a wear-resistant material.
• Plastic sliding elements can be provided between the jaws and the housing.
• the plastic sliding elements ensure a low friction between the jaws and the housing. So that the jaws can slide along optimally on the plastic sliding elements, webs with two sliding surfaces which slide along the plastic sliding elements can be provided on the jaws.
• a workpiece ejector can be arranged between the jaws. This also ensures a smooth production process.
• a threaded hole can be provided in the housing, which is preferably arranged between the jaws.
• the bore may transition into a tubular channel extending along a cylinder receiving the piston.
• supply wires or supply lines can be routed through the channel.
• the piston may have an aperture through which the tubular channel passes.
• the jaws can be arranged so that they are movable past each other. This arrangement variant may be necessary if the clamping elements for clamping a workpiece must be placed very close to each other. In addition, the available space conditions cause this arrangement variant. However, it is also possible to arrange the jaws so that they move frontally to each other.
• the housing may be made of a high strength aluminum which is coatable with a lubricious plastic or made of steel. If the clamping device is to be operated with compressed air, high-strength aluminum is preferred as the material. With a hydraulic actuation of the tensioning device, for example with oil or cooling lubricant, steel is preferred because of the required higher strength values.
• the housing and the cylinder can be manufactured particularly inexpensively if they are manufactured in one piece.
• the integrally manufactured housing then advantageously also has bores for supplying compressed air, in addition to the cylinder.
• the at least one drive rod, a sliding element and the guide elements may be integrally formed together.
• the sliding element allows the jaws to be moved with minimal friction. Tilting of the moving components is excluded by the sliding element.
• the piston can be bolted to the drive rod.
• the sliding element can be greased on its sliding surfaces.
• the jaws may have a round cross-section.
• the circular cross section distributes the surface pressure evenly over the circumference of the jaws, so that there are no areas on the jaws which have an extremely high surface pressure during the operation of the clamping device.
• the jaws may have at least one circumferential groove for receiving an O-ring which seals the area between the jaws and the housing.
• the round cross-section of the jaws can thus be sealed particularly well and with minimal technical effort.
• the jaws are provided with a toothing on their lateral surface, then the jaws and the clamping elements attached to them can be arranged at a certain desired angle at an angle to the horizontal.
• An attachment for holding the clamping elements can be mounted on the jaws.
• the essay can be individually adapted to the respective case of need.
• the attachment may have a plurality of surfaces for receiving the clamping elements.
• the clamping elements can be mounted on the front side, on the side surfaces and on the top of the attachment.
• the article may have inclined surfaces on which the clamping elements are arranged at a certain angle between 0 ° and 90 ° to the top. In this way, the clamping elements can be arranged depending on the intended use in several specific positions.
• the attachment can at least partially surround the housing. It thus prevents unwanted twisting of jaws with a round cross-section.
• a plurality of drive rods can be integrally connected to a common base.
• the one-piece design of the base and drive rods can be mounted much faster than if the drive rods have to be mounted individually.
• the common base can be guided by an insert arranged in the housing.
• the insert positions the base with the drive rods arranged in the housing and at the same time serves to guide the base.
• the insert and / or the piston may have a triangular base surface, wherein the corner regions are rounded.
• the housing surrounding the insert and / or the piston is expediently adapted to the triangular contour with the rounded corner areas. Due to the special contour, the insert and / or the piston is twisted securely arranged in the housing. In addition, this contour allows to provide the housing in certain areas with a greater wall thickness, for example, to be able to accommodate mounting holes in the housing wall.
• the piston and / or a housing bottom can have a closed circumferential air duct. Due to the closed circumferential air channel, the air can spread quickly and evenly below the piston. In the air duct, the air is not pressed as much as would happen if the air directly from a bore, which could be arranged for example in the housing bottom, would hit the piston.
• Figure 1 is a side view of a first embodiment of the clamping device with partially open jaws.
• FIG. 2 is a front view of the tensioning device of FIG. 1;
• FIG. 3 shows a plan view of the clamping device from FIG. 1 with the jaws closed; 4 is a side view of a second embodiment of the clamping device with partially open jaws.
• Fig. 5 is a plan view of a third embodiment of the clamping device.
• FIG. 6 is a perspective view of a fourth embodiment of the clamping device
• Fig. 7 is a front view of the tensioning device of Fig. 6;
• Fig. 8 is a plan view of a jaw with a round
• FIG. 9 is a perspective top view of a clamping device provided with an attachment
• FIG. 10 shows a sectional view through the lower region of the tensioning device from FIG. 9;
• FIG. 11 shows a longitudinal section through a fifth embodiment of the tensioning device
• Fig. 13 shows a cross section through the housing of
• Tensioning device of Fig. 11; Fig. 14 is a plan view of a housing bottom.
• Fig. 1 shows a clamping device 10 with two mutually oppositely movable jaws 11 and 12.
• the jaws 11 and 12 are mutually oppositely movable jaws 11 and 12.
• the piston rods 13 and 14 are connected to a piston 15 and can be driven by it.
• the piston 15 is guided in a cylinder 16, which is used to actuate the piston
• obliquely extending slots 17 and 18 are provided in the arranged on the piston rods 13 and 14 pins 19 engage. Due to the oblique course of the slots 17 and 18, the jaws 11 and 12 move laterally back and forth when the piston 15, the piston rods 13 and 14 moves up and down.
• a bore 100 is provided, into which a thread 101 is incorporated.
• the bore 100 may for example receive a sensor or a camera for workpiece detection. However, it is also possible to mount a workpiece ejector in the bore 100.
• the bore 100 merges into a tubular channel 102, which is arranged below the bore 100 and thus extends along the cylinder 16.
• the piston 15 thus has an opening through which the channel 102 extends.
• sealing rings 103 are mounted on the piston 15, sealing rings 104 on the piston rods 13 and 14, and a sealing ring 105 on the channel 102.
• the jaws 11 and 12 engage around a housing 20 of the tensioning device 10 (see FIG. 2). In this way, a reliable guidance of the jaws 11 and 12 is ensured. Between the jaws 11 and 12 and the housing 20 guide inserts 21 are mounted, in which balls 22 are arranged. This ensures a reliable and low-friction guidance of the jaws 11 and 12 during the process of the jaws 11 and 12.
• the piston rods 13, 14, 30 and 31 are arranged symmetrically to the axes of symmetry of the piston 16 (see Fig. 3). As a result, the piston 16 can be smoothly moved without tilting.
• Fig. 4 shows a clamping device 40, in which piston rods 41 and 42 are bent obliquely.
• oblique slots or grooves in the jaws can be dispensed with.
• a housing 51 surrounds a jaw 52. This ensures reliable guidance of the jaw 52, which ensures trouble-free operation.
• FIG. 6 shows a tensioning device 60, in which a drive rod 62, a sliding element 63 and a guide element 64 are formed integrally together.
• a piston 61 is bolted to the drive rod 62.
• the sliding element 63 avoids tilting of the moving components. Sliding surfaces 65 of the sliding member 63 slide along the inner walls of a jaw 66 along. By lubricating the sliding surfaces 65, the friction between the sliding member 63 and the jaw 66 can be reduced.
• the jaw 66 is provided with a guide slot 67 in which the guide member 64 can slide along.
• the jaw 66 Between the jaw 66 and a housing 70, plastic sliding elements 71 are provided, which reduce the friction between the jaw 66 and the housing 70 (see FIG. 7).
• the jaw 66 has a web 72 which is arranged between the plastic sliding elements 71.
• Fig. 8 shows a jaw 80 having a round cross-section.
• the jaw 80 is provided with teeth 81, so that an arranged on the jaw 80 clamping element 82 can be arranged at certain angles at an angle to the horizontal.
• the toothing 81 runs around the entire circumference. For the sake of clarity, however, it is only partially shown.
• the Fign. 9 and 10 show a clamping device 90 on the jaws 98 an attachment 91 is mounted.
• the attachment 91 has at its end face 92, at its side surfaces 93 and at sloping surfaces 94 Befest Trents- possibilities in the form of holes 95 for attachment of the clamping elements.
• the clamping elements can thus be arranged in certain positions depending on the purpose.
• the attachment 91 partially surrounds a housing 96. It thus prevents unwanted rotation of jaws (80) with a round cross section, which have no teeth 81 (see Fig. 8).
• holes 97 are provided in order to fix the jaws 98 and the attachments 93 with each other.
• FIG. 11 shows a clamping device 110 with three jaws 111, 112 and 113 (see also FIG. 13).
• the jaws 111 and 112 are driven by drive rods 114 and 115.
• the drive rods 114 and 115 and a third drive rod not shown here are connected to a common base 116.
• the drive rods 114, 115 and the third drive rod are formed integrally with the base 116.
• the base 116 is surrounded by an insert 117 (see Figures 11 and 12).
• the insert 117 serves to guide the base 116 and positions the base 116 in a housing 118.
• the insert 117 is provided with a star-shaped recess 120, through which the drive rods 114, 115 and the third drive rod (not shown here) and the base 116 can be performed.
• Both the insert 117 (see FIG. 12) and a piston 130 (see FIG. 13) have a triangular base on whose corners are rounded.
• the housing 117 surrounding the insert 117 and / or the piston 130 is adapted to the triangular contour with the rounded corner areas.
• the insert 117 and / or the piston 130 in the housing 118 can not rotate.
• the wall thickness of the housing 118 can be sized larger in different areas to provide mounting holes 131, 132 and 133 can.
• FIG. 14 shows a housing bottom 140 with a closed circumferential air channel 141.
• the closed circumferential air channel 141 is connected by means of a connecting channel 142 with a bore 143. Compressed air escapes from the bore 143 and is distributed uniformly in the closed circumferential air channel 141 below the piston, which is not shown here.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Jigs For Machine Tools (AREA)
• Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
• Shaping Of Tube Ends By Bending Or Straightening (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=36314406

Family Applications (1)

Country Status (4)

Families Citing this family (1)

Family Cites Families (11)

• 2006
  • 2006-02-17 DE DE200620002681 patent/DE202006002681U1/de not_active Expired - Lifetime
• 2007
  • 2007-02-12 WO PCT/DE2007/000273 patent/WO2007093160A1/de active Application Filing
  • 2007-02-12 EP EP07711185A patent/EP1984136A1/de not_active Withdrawn
  • 2007-02-12 DE DE112007000971T patent/DE112007000971A5/de not_active Withdrawn
  • 2007-02-12 EA EA200870269A patent/EA200870269A1/ru unknown

Non-Patent Citations (1)

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