A kind of Workpiece clamping device with shell fragment positioning datum
Technical field
The utility model relates to a kind of scroll chuck, particularly relates to a kind of Workpiece clamping device with shell fragment positioning datum, belongs to technical field of tooling clamps.
Background technology
Chuck lathe is used for the mechanical device of clamping work pieces, utilize moving radially of the movable jaw be distributed on chuck body, the machine tool accessories of Workpiece clamping and location, chuck is generally made up of chuck body, movable jaw and claw driving mechanism 3 part, chuck body diameter is minimum is 65mm, maximumly reach 1500mm, there are through hole in central authorities, so that by workpiece or bar; There is cylindrical or short taper profile structure at back, and directly or be connected by ring flange and machine tool chief axis end, chuck is usually arranged on lathe, cylindrical grinder and internal grinder and uses, and also can coordinate with various indexing means, for milling machine and drilling machine.Can be divided into from chuck jaw number: two-jaw(ed)chuck, scroll chuck, chuck, six dog chucks and special chuck, can be divided into from use power: hand chuck, air spider, oild chuck, electric chuck and mechanical chuck.Can be divided into structure: hollow chuck and middle real chuck.
At present, scroll chuck is generally by a bevel gear wheel, three bevel pinions, three claw compositions, three bevel pinions and bevel gear wheel engagement, there is flat thread structure at the back side of bevel gear wheel, three claw deciles are arranged on flat thread, when pulling bevel pinion with spanner, bevel gear wheel just rotates, and the flat thread at its back side just makes three claws simultaneously close to center or exit.
In prior art, scroll chuck is in converted products process, existing fixture technology can not meet drawing requirement, can not ensure machined surface and workpiece axial axis parallel to each other, scroll chuck is gone out by Cutter Body Processing with Machining Center the appearance profile of workpiece, positioned by workpiece configurations profile, positioned by workpiece profile scroll chuck in process and can not ensure that machined surface and workpiece spindle are to axis being parallel completely, in the process of Workpiece clamping, workpiece axial axis is with to be cut face not parallel, cause workpiece in the process of stepping up, produce setting circle to offset, cause the failure of whole clamping process.
Utility model content
Main purpose of the present utility model is the problems referred to above existed to solve existing chuck, provide a kind of structure simple, esy to use, safe and reliable, drawing requirement can be met, effectively can ensure machined surface and the Workpiece clamping device with shell fragment positioning datum that workpiece axial axis is parallel to each other, make workpiece can not produce setting circle in the process of stepping up occurs to offset.
The purpose of this utility model can reach by adopting following technical scheme:
A kind of Workpiece clamping device with shell fragment positioning datum, comprise disk body and claw, described disk body is for supporting the stable of described Workpiece clamping device, described Workpiece clamping device build-in components spatial accommodation is provided, described claw is for clamping pre-clamping work pieces, upper head plate is provided with between described disk body and described claw, described upper head plate is for connecting described disk body and described claw, be fixedly connected with between described upper head plate with described disk body, described claw is arranged on described upper head plate, described claw comprises the first claw and the second claw, described first claw is provided with the first keeper, described second claw is provided with the second keeper, described first keeper and described second keeper coordinate location, for pre-aligned pre-clamping work pieces, while location, described first claw and described second claw clamp pre-clamping work pieces.
As a kind of preferred version, described first keeper is arranged on described first claw by screw and nut, described second keeper is arranged on described second claw by screw and nut, the end of described first claw near described second claw side is stretched out in the end of described first keeper, and the end of described second claw near described first claw side is stretched out in the end of described second keeper.
As a kind of preferred version, described first keeper is made up of the first keeper body and shell fragment, described first keeper body is provided with screw, described shell fragment is elasticity shell fragment, for pre-aligned pre-clamping work pieces, described elasticity shell fragment is provided with shell fragment positioning port near the upper end of described second claw side, and described shell fragment positioning port is used for pre-aligned pre-clamping work pieces.
As a kind of preferred version, described second keeper is made up of the second keeper body, described second keeper body is provided with screw, described second keeper body is provided with the second keeper positioning port near the upper end of described first claw side, and described second keeper positioning port is used for pre-aligned pre-clamping work pieces.
As a kind of preferred version, described shell fragment positioning port and described second keeper positioning port measure-alike, and cooperatively interact, for pre-aligned pre-clamping work pieces.
As a kind of preferred version, the material of described first keeper and described second keeper all adopts metal material, and the material of described first claw and described second claw also all adopts metal material.
As a kind of preferred version, described disk body comprises center part, coat part, front end-plate part and parcel, described front end-plate part is for connecting described center part and described coat part, described front end-plate part is also provided with the axially extending bore for oiling, and the distance of described axially extending bore distance disk body center line is greater than the radius of the excircle of center part.
As a kind of preferred version, described parcel is axially arranged on the excircle of described center part of described disk body rotationally, and described disk body also comprises multiple radial bevel gear, movably radial rear pressing cover be arranged in described front end-plate part be arranged between described center part and described coat part rotationally.
Advantageous Effects of the present utility model: it is simple that the utility model has structure, easy to use, safe and reliable, drawing requirement can be met, can effectively ensure machined surface and workpiece axial axis parallel to each other, make workpiece can not produce setting circle in the process of stepping up and the features such as skew occur, make chuck in converted products process, drawing requirement can be met, ensure machined surface and workpiece axial axis parallel to each other, chuck is gone out by Cutter Body Processing with Machining Center the appearance profile of workpiece, positioned by workpiece configurations profile, positioned by the shell fragment on chuck and positioning datum in process, can ensure that machined surface and workpiece spindle are to axis being parallel completely, in the process of Workpiece clamping, workpiece axial axis is with to be cut face parallel, make workpiece can not produce setting circle skew in the process of stepping up, whole clamping process is carried out smoothly.
Accompanying drawing explanation
Fig. 1 is the Workpiece clamping device plane that the utility model has shell fragment positioning datum;
Fig. 2 is the utility model first claw plane;
Fig. 3 is the utility model second claw plane.
In figure: 1-disk body, 2-upper head plate, 3-second claw, 4-first claw, 5-second keeper, 6-first keeper, 7-shell fragment, 8-screw, 10-shell fragment positioning port, 11-second keeper positioning port.
Detailed description of the invention
For make those skilled in the art clearly with clear and definite the technical solution of the utility model, below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
As Fig. 1, shown in Fig. 2 and Fig. 3, a kind of Workpiece clamping device with shell fragment positioning datum, comprise disk body 1 and claw, described disk body 1 is for supporting the stable of described Workpiece clamping device, described Workpiece clamping device build-in components spatial accommodation is provided, described claw is for clamping pre-clamping work pieces, upper head plate 2 is provided with between described disk body 1 and described claw, described upper head plate 2 is for connecting described disk body 1 and described claw, be fixedly connected with between described upper head plate 2 with described disk body 1, described claw is arranged on described upper head plate 2, described claw comprises the first claw 4 and the second claw 3, described first claw 4 is provided with the first keeper 6, described second claw 3 is provided with the second keeper 5, described first keeper 6 and described second keeper 5 coordinate location, for pre-aligned pre-clamping work pieces, while location, described first claw 4 and described second claw 3 clamp pre-clamping work pieces.
As depicted in figs. 1 and 2, as a kind of preferred version of the present embodiment, described first keeper 6 is arranged on described first claw 4 by screw 8 and nut, described second keeper 5 is arranged on described second claw 3 by screw 8 and nut, the end of described first claw 4 near described second claw 3 side is stretched out in the end of described first keeper 6, and the end of described second claw 3 near described first claw 4 side is stretched out in the end of described second keeper 5.
As depicted in figs. 1 and 2, as a kind of preferred version of the present embodiment, described first keeper 6 is made up of the first keeper body and shell fragment 7, described first keeper body is provided with screw 8, described shell fragment 7 is elasticity shell fragment, for pre-aligned pre-clamping work pieces, described elasticity shell fragment is provided with shell fragment positioning port 10 near the upper end of described second claw 3 side, and described shell fragment positioning port 10 is for pre-aligned pre-clamping work pieces.
As shown in figures 1 and 3, as a kind of preferred version of the present embodiment, described second keeper 5 is made up of the second keeper body, described second keeper body is provided with screw 8, described second keeper body is provided with the second keeper positioning port 11 near the upper end of described first claw 4 side, described second keeper positioning port 11 is for pre-aligned pre-clamping work pieces, described shell fragment positioning port 10 is measure-alike with described second keeper positioning port 11, and cooperatively interact, for pre-aligned pre-clamping work pieces.
As a kind of preferred version of the present embodiment, the material of described first keeper 6 and described second keeper 5 all adopts metal material, and the material of described first claw 4 and described second claw 3 also all adopts metal material.
As a kind of preferred version of the present embodiment, described disk body 1 comprises center part (not shown), coat part (not shown), front end-plate part (not shown) and parcel (not shown), described front end-plate part is for connecting described center part and described coat part, described front end-plate part is also provided with the axially extending bore for oiling, the distance of described axially extending bore distance disk body 1 center line is greater than the radius of the excircle of center part, described parcel is axially arranged on the excircle of described center part of described disk body 1 rotationally, described disk body 1 also comprises multiple radial bevel gear be arranged between described center part and described coat part rotationally, the radial rear pressing cover be arranged in described front end-plate part movably.
In sum, it is simple that the utility model has structure, easy to use, safe and reliable, drawing requirement can be met, can effectively ensure machined surface and workpiece axial axis parallel to each other, make workpiece can not produce setting circle in the process of stepping up and the features such as skew occur, make chuck in converted products process, drawing requirement can be met, ensure machined surface and workpiece axial axis parallel to each other, chuck is gone out by Cutter Body Processing with Machining Center the appearance profile of workpiece, positioned by workpiece configurations profile, positioned by the shell fragment on chuck and positioning datum in process, can ensure that machined surface and workpiece spindle are to axis being parallel completely, in the process of Workpiece clamping, workpiece axial axis is with to be cut face parallel, make workpiece can not produce setting circle skew in the process of stepping up, whole clamping process is carried out smoothly.
The above; be only the utility model preferred embodiment; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in scope disclosed in the utility model; be equal to according to the technical solution of the utility model and design thereof and replace or change, all belonged to protection domain of the present utility model.