The eccentric wheel grip device
Technical field
The utility model relates to a kind of grip device, particularly a kind of eccentric wheel grip device.
Background technology
Fixture is a kind of device in order to clamping workpiece.Its effect is by the workpiece location, so that workpiece obtains the tram with respect to lathe and cutter, and workpiece is clamped reliably.By the workpiece reliable grip, can guarantee workpiece precision machining and accurate, guarantee that workpiece can effectively play a role when practical application, and the safety of workpiece use.
The utility model content
The utility model purpose is in order to overcome the deficiencies in the prior art, and a kind of eccentric wheel grip device is provided, and workpiece is clamped reliably, easy to use and reliable.
In order to achieve the above object, the utility model is by the following technical solutions:
A kind of eccentric wheel grip device comprises:
One base, arrange a workpiece fixed bit on described base;
One eccentric wheel seat, described eccentric wheel seat is arranged on base, on described eccentric wheel seat, a groove is set;
One eccentric wheel, the vertical slip of described eccentric wheel is located in described groove, and described eccentric wheel is placed near the direction of workpiece fixed bit with eccentric orfice, on described eccentric wheel, one handle is set;
One depression bar, an end of described depression bar is hinged by bearing pin and eccentric wheel, and a slit-like through-holes is offered at the middle part of described depression bar; And
One lead, described lead is vertically set on the base between described workpiece fixed bit and eccentric wheel seat, the outer sheathed spring of described lead, described slit-like through-holes is set in lead and described depression bar on spring; A stop nut is installed in described lead upper end, and the circumscribed circle diameter of described stop nut is greater than the wide of described slit-like through-holes;
The other end of described depression bar is in described workpiece fixed bit top.
As preferably, the other end of described depression bar is " Y " type structure.
As preferably, also include the first packing ring and the second packing ring, the first gasket sleeve is located on the lead between stop nut and depression bar, and the second gasket sleeve is located on the lead between depression bar and spring.
As preferably, be provided with four location key seats on described workpiece fixed bit, and be provided with the alignment pin that is independent of base and is used in conjunction with location key seat
Compared with prior art, the utlity model has following beneficial effect:
By said structure, the utility model can clamp workpiece reliably, and easy to use and reliable; Guarantee workpiece precision machining and accurate." Y " type structure end of pressing plate, provide two to compress points, can more firm workpiece pressing; The first packing ring and the second packing ring have played protective effect to depression bar, spring and stop nut respectively.
The accompanying drawing explanation
Fig. 1 is main TV structure schematic diagram of the present utility model;
Fig. 2 is plan structure schematic diagram of the present utility model.
In figure:
1-base; 11-eccentric wheel seat; 12-location key seat; 2-eccentric wheel; 21-handle; 3-depression bar; 4-lead; 41-spring; The 42-the first packing ring; The 43-the second packing ring; 44-stop nut; 5-workpiece.
Now with specific embodiment, the utility model is described in further detail by reference to the accompanying drawings.
The specific embodiment
As shown in Figures 1 and 2, for eccentric wheel 2 grip devices described in the utility model, mainly comprise base 1, eccentric wheel 2, depression bar 3.
Base 1 is provided with workpiece fixed bit and eccentric wheel seat 11; Be provided with four location key seats 12 on the workpiece fixed bit, and be provided with the alignment pin that is independent of base 1 and is used in conjunction with location key seat 12; On eccentric wheel seat 11, a groove is set.
The vertical slip of eccentric wheel 2 is located in groove, and eccentric wheel 2 is placed near the direction of workpiece fixed bit with eccentric orfice; Opposite side relative with the residing side of eccentric orfice on eccentric wheel 2 is provided with handle 21.
One end of depression bar 3 is hinged by bearing pin and eccentric wheel 2, and a slit-like through-holes is offered at the middle part of depression bar 3; The vertical lead 4 that arranges on the base 1 between workpiece fixed bit and eccentric wheel seat 11, the outer sheathed spring 41 of lead 4, slit-like through-holes is set in lead 4 and depression bar 3 on spring 41; A stop nut 44 is installed in lead 4 upper ends, and the circumscribed circle diameter of stop nut 44 is greater than the wide of described slit-like through-holes.The other end of depression bar 3 is in workpiece fixed bit top, and this end is " Y " type structure.Lead 4 between stop nut 44 and depression bar 3 is arranged with the first packing ring 42, and the lead 4 between depression bar 3 and spring 41 is arranged with the second packing ring 43.The first packing ring 42 can adopt two-layer gasket construction, and buffering effect is better like this, more is conducive to protect part.
The application of utility model:
Workpiece 5 is placed on the workpiece fixed bit, and with alignment pin, workpiece is fixed.Then handle is pressed down, now eccentric wheel rotates, and then drives the depression bar motion; The end that depression bar is connected with eccentric wheel is along with eccentric wheel rises, and under the effect of the stop nut of lead and gravity, " Y " type structure end of depression bar presses down, thus workpiece pressing 5.To on handle, press, " Y " type structure end of depression bar rises, and unclamps workpiece 5.
The lower pressure side of depression bar is " Y " type structure, provides two to compress point, can more firm workpiece pressing 5.The first packing ring and the second packing ring have played protective effect to depression bar, spring and stop nut respectively, have reduced at " Y " of depression bar type structure end and have pressed down process to wearing and tearing of above-mentioned three parts etc.
The utility model is not limited to above-mentioned embodiment, if various changes of the present utility model or modification are not broken away to spirit and scope of the present utility model, if, within these changes and modification belong to claim of the present utility model and equivalent technologies scope, the utility model also is intended to comprise these changes and change.