The clamp structure that is used for annular special-shaped parts processing
Technical field
The present invention relates to large-sized annular parts processing tooling field, be specially the clamp structure for annular special-shaped parts processing.
Background technology
A kind of annular special-shaped parts for aero-engine, its structure is seen illustrated in figures 1 and 2, its circumferential surface on annular element has the spline 7 of odd number five equilibrium, mostly the in the past processing of spline is to adopt broaching machine to process with broaching tool, but because this ring-shaped work pieces wall thickness, thinnest part is 4.5mm only, and to process its cutting stress large therefore adopt in the past broaching tool to carry out spline, easily causes the distortion of workpiece.In order to address the above problem, now use the spline processing that CNC milling machine carries out this part instead, because this annular special-shaped parts cross section is complicated, adopt common CNC milling machine anchor clamps, can't carry out accurate clamping location to part, affect the location processing of part.
Summary of the invention
For the problems referred to above, the invention provides the clamp structure for annular special-shaped parts processing, clamping was reliable and stable when it can guarantee that part by numerical control mills processing, and guaranteed that part is not yielding.
Its technical scheme is such, it comprises matrix, it is characterized in that: described matrix has circular groove, and described circular groove center bottom has the axial location hole, described axial location is provided with the location fastener in the hole, and circumferential surface is provided with side pressing plate detent mechanism on the described matrix.
It is further characterized in that: described part side pressing plate detent mechanism is provided with three, and described three part side pressing plate detent mechanisms are along the even distributing installation of circumferential surface on the matrix; Described side pressing plate detent mechanism comprises the side pressing plate, and the compression working face of described side pressing plate is the conical surface, the taper inner recess coupling of the described conical surface and annular special-shaped parts outer peripheral face to be processed.
A kind of clamp structure for annular special-shaped parts processing of the present invention, its location fastener suffers that part side pressing plate detent mechanism is fixedly clamped to part in the interior ring side of part and the side surface of part jointly, its clamping is reliable, the side pressing plate of part side pressing plate detent mechanism cooperates with the outer weekly form recess of part, part is not yielding in clamping process, has guaranteed crudy and the precision of part.
Description of drawings
Fig. 1 is the structural representation of processing parts of the present invention;
Fig. 2 is the section structure schematic diagram of processing parts of the present invention;
Fig. 3 is a kind of core rod clamp structure schematic diagram for large-scale cylindrical part processing of the present invention;
Fig. 4 is the plan structure schematic diagram of Fig. 3.
The specific embodiment
See Fig. 3 and Fig. 4, clamp structure of the present invention comprises matrix 1, and matrix 1 has circular groove 2, and circular groove 2 center bottom have the axial location hole, is provided with location fastener 3 in the axial location hole, and circumferential surface is provided with side pressing plate detent mechanism on the matrix 1.Side pressing plate detent mechanism is provided with three, and three side pressing plate detent mechanisms are along the even distributing installation of circumferential surface on the matrix 1; Side pressing plate detent mechanism comprises side pressing plate 4, and the compression working face 8 of side pressing plate 4 is the conical surface, taper inner recess 6 couplings of the conical surface and annular special-shaped parts to be processed 5 outer peripheral faces.During clamping, the inboard smooth anchor ring of part 5 is set in fastener 3 outsides, location, locator card 3 is installed in the circular groove 2 axial location holes of matrix 1 together with part 5, at this moment, the upper table plane that is loaded on matrix 1 is just in time taken in the maximum cylindrical baseplane 9 of part 5, the taper inner recess 6 that again three side pressing plates is stretched into part 5 outer peripheral faces is interior and by bolt that side pressing plate 4 and matrix 1 is fixing, is about to part 5 clampings complete.Add man-hour carrying out spline, need to take out by location fastener 3.