Below in conjunction with accompanying drawing and embodiment the utility model is further described.
As shown in Figure 2.
The fast accurate arm jig of a kind of moulding; Comprise upper trimming die 1, following punch die 3 and
backstay 4; The utility model can be 300 ~ 1200 millimeters at predominant tube diameter φ D; Wall thickness T is 10 ~ 100 millimeters, and to go up processing diameter phi d be that 25 ~ 500 millimeters, wall thickness t are 3 ~ 50 millimeters arm, and upper trimming die 1 wherein mainly is made up of linkage section 101 and upper punch 102, and the bottom of upper punch 102 is provided with and is responsible for the arc surface structure that shape matches; Following
punch die 3 mainly is made up of drift 301 and hydraulic jack 303; One end of
backstay 4 links to each other with linkage section 101, and the low punch locating hole 302 that the other end of
backstay 4 passes on the drift 301 of locating
hole 2 and following
punch die 3 on the person in charge inserts in this low punch locating hole 302 relatively and when working, and drift 301 is installed on the hydraulic jack 303; As shown in Figure 2; During practical implementation, the linkage section 101 of
upper trimming die 1 and upper punch 102 can be realized both connection with welding short slab 104 and connecting bolt down through last welding short slab 103, on weld short slab 103 and be provided with the centre bore that supplies backstay 4 to pass through with the center of welding short slab 104 down; During
backstay 4 location and centre bore, the centre bore of upper punch 102, the locating hole on the
body 2, the low punch locating hole 302 of linkage section 101 be located on the same line; As shown in Figure 2; In order to guarantee positioning accuracy; The length H of
backstay 4 is more than or equal to centre bore height H
,
body locating hole 2 height H
, low punch locating hole 302 height H
sum of upper punch 102, i.e. H>=H
+H
+H
.
The size of being responsible for the locating hole of being opened on 5 should be complementary with backstay 4, and backstay is placed locating hole, confirms that upper punch and low punch operating position go forward side by side after the row labels; Can carry out local heat to preference temperature, upper trimming die is placed on the body 5, insert backstay 4; Pass upper trimming die locating hole, body locating hole; Low punch locating hole 302 is enclosed within on the backstay 4, utilizes hydraulic jack 303 to carry out punching, as shown in Figure 3.
The utility model does not relate to all identical with the prior art prior art that maybe can adopt of part to be realized.