Drilling mold for oblique hole in engine nozzle ring

Abstract

An engine nozzle ring inclined hole drilling mold, including a base, a support, a locator, a mandrel, a bearing, a tangential clamping sleeve, a bearing cover, an indexing plate, etc., and the left and right supports are fixed on the base by pins and bolts, The bearing is installed in the center hole of the upper end of the left and right supports. The mandrel and the positioning plate are connected by pins and bolts, and are respectively placed in the bearing holes at both ends. The bearing cover is located at the upper end of the support. The tangential clamping sleeve is located between the bearing cover and the bearing. Attach the handle nut to lock the arbor while working. The indexing plate and the left ear of the positioning plate are connected by pins and bolts, and form a specific angle. When the drilling template is working, it is positioned through the positioning holes at both ends of the indexing plate, and the oblique holes are processed from the front and back. The positioning ring and the positioning plate are connected by pins and screws, and the positioning is realized through the cooperation of the outer circle and the inner hole of the nozzle ring. The invention has the advantages of high positioning accuracy, convenient operation, strong practicability, etc., and can be used for processing complex inclined holes.

Description

technical field [0001] The invention relates to an inclined hole drilling mold, in particular to an engine nozzle ring inclined hole drilling mold. Background technique [0002] Such as figure 1 As shown, it is the rough drawing of the engine nozzle ring, the structure is complex, and the inclined hole to be processed is located on the stepped circle of the bottom surface. The specific position is as follows figure 2 shown. The key to machining the oblique hole of the engine nozzle ring is to ensure the angle of the oblique hole and the diameter of the index circle at the entrance and exit. However, one of the defects of the existing drilling mold for the oblique hole of the nozzle ring is that it is inconvenient to operate. When locking and loosening the mandrel with a tangential clamping sleeve, there is interference between the handle and the indexing plate, and it is necessary to change the force application position of the handle in the middle. This kind of clamping...

AI Technical Summary

Problems solved by technology

The key to machining the slanted hole of the engine nozzle ring is to ensure the angle of the slanted hole and the diameter of the index circle at the entrance and exit. However, one of the defects of the existing drilling mold for the slanted hole of the nozzle ring is that it is inconvenient to operate.

When locking and loosening the mandrel with a tangential clamping sleeve, there is interference between the handle and the indexing plate, and it is necessary to change the force application position of the handle in the middle. Multiple processing, this kind of clamping method is easy to cause cumbersome operation problems; the second defect is that it is difficult to repair

When there is an out-of-tolerance phenomenon in the drilling jig, since the parts and the positioning plate are matched by the shaft hole, and the positioning reference of the tooling is the center hole of the positioning plate, the relative position of the parts and the positioning plate is fixed, and there is irreversibility in the repair, so it is difficult to debug the drilling jig

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