CN219581503U - Composite die suitable for hole flanging of titanium alloy cylinder wall - Google Patents

Abstract

The utility model relates to the technical field of part processing, and particularly discloses a composite die suitable for hole flanging of a titanium alloy cylinder wall, which comprises a bottom plate for placing hole flanging of a part, wherein an expansion valve which is assembled into a circular ring shape by a hole flanging block is arranged in the middle of the plate surface of the bottom plate, the expansion valve can be outwards expanded, a circular limiting ring is arranged on the periphery of the expansion valve, a gap for placing the part is reserved between the limiting ring and the expansion valve, hole flanging rods which can outwards slide and are used for hole flanging are uniformly distributed on the expansion valve and the limiting ring, and the hole flanging rods are in sliding connection with the expansion valve and the limiting ring. The purpose of this patent is solved hole flanging operation's efficiency ratio low, secondly because the manual work is carried out the operation hole flanging for hole flanging skew produces the error easily, and then influences the problem of the yield of part.

Description

Composite die suitable for hole flanging of titanium alloy cylinder wall

Technical Field

The utility model relates to the technical field of part machining, in particular to a composite die suitable for hole flanging of a titanium alloy cylinder wall.

Background

The aeroengine relates to a part which is in a thinner cylinder shape, and because of the structural requirement of the aeroengine, the outside hole flanging which is uniformly distributed is required to be arranged on the cylindrical part so as to ensure that the part can be normally used when being mounted on the aeroengine.

At present, for the processing of cylindrical parts, there are two processing methods, namely, firstly, a hole flanging machine is used for uniformly flanging holes on an iron sheet manually, then the iron sheet subjected to hole flanging is enclosed into a cylindrical shape with a certain diameter and welded, but the welded seam formed after welding can reduce the overall structural strength of the iron sheet, and further the overall use effect of the part is affected; secondly, the iron sheet is produced into a cylindrical shape in advance, and then hole flanging is carried out on the surface of the part one by manually using a tool; the second hole flanging operation is wider in use, but the second hole flanging operation is lower in efficiency, holes are required to be manually and one by one in the surface of the part, the distance between the holes is difficult to ensure, and secondly, the manual operation machine tool is used for hole flanging operation, so that the part is required to be accurately fixed and positioned independently, otherwise, the hole flanging positions are easy to be different, and further, the hole flanging is easy to deviate to generate errors, so that the yield of the part is affected.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a composite die suitable for hole flanging of a titanium alloy cylinder wall, which solves the problems that the hole flanging operation is relatively low in efficiency, and the hole flanging is easy to deviate to generate errors due to manual hole flanging operation, so that the yield of parts is affected.

In order to solve the problems, the utility model adopts the following technical scheme:

the utility model provides a compound mould suitable for titanium alloy section of thick bamboo wall hole flanging, is including the bottom plate that is used for placing the part hole flanging, the face middle part of bottom plate is provided with the expansion lamella that is the ring form by hole flanging piece assembly, and the expansion lamella can outwards expand, the periphery of expansion lamella is provided with the annular spacing ring of circle, leaves the gap of placing the part between spacing ring and the expansion lamella, evenly distributed has the hole flanging stick that can outwards slide and be used for hole flanging on expansion lamella and the spacing ring, sliding connection between hole flanging stick and expansion lamella and the spacing ring.

The principle of the scheme is as follows:

the part to be hole-flanging is placed in the gap between the limiting ring and the expansion valve, the hole-flanging block is expanded, the hole-flanging rod moves along with the expansion valve, the part placed in the gap is extruded, hole-flanging operation of the part is achieved, the part periphery can be uniformly hole-flanging when the part is placed, and then larger errors are reduced when manual hole flanging is carried out.

The beneficial effect that this scheme produced is:

in the scheme of the utility model, by arranging the hole flanging block and the hole flanging rod which can be expanded, when the expansion core moves, the hole flanging block and the hole flanging rod are simultaneously expanded outwards, so that parts between the limiting ring and the expansion valve can be extruded and hole flanging, the hole flanging positions of the produced parts are consistent, the error in manual hole flanging is reduced, the efficiency of hole flanging operation is improved, and secondly, the production of welding seams in the welding process is avoided and the reduction of the structural strength of the parts is avoided due to the use of integral hole flanging.

Further, the periphery side of expansion valve is equipped with the first working face of step form, transversely runs through on the first working face of every expansion valve and is used for placing the through-hole of hole flanging the stick, and expansion valve when outwards expanding, hole flanging the stick also can outwards expand simultaneously, carries out hole flanging operation to the surface of part, guarantees the integration after the part hole flanging, because expansion valve and hole flanging board outwards expand simultaneously under the removal of expanding the core, can not produce the indentation to the surface of part.

Further, the inner side surface of the limiting ring is provided with a second working surface which can be matched with the expansion valve working surface, a step hole opposite to the hole flanging rod is penetrated at the second working surface of the limiting ring, and the second working surface can be matched with the first working surface according to the hole flanging position of the part, so that the hole flanging position of the part is set to be in a step shape.

Further, the hollow center of the hole flanging block is provided with a truncated cone-shaped expansion core, one side of the expansion core, which is short in diameter, stretches into the hollow interior of the hole flanging block, and as the expansion core is truncated cone-shaped, when the expansion core moves, one end of the expansion core, which is long in diameter, can continuously push the hole flanging block to expand outwards, and when the hole flanging block expands outwards, the hole flanging rod also moves along with the hole flanging block, so that hole flanging operation on parts is realized.

Further, the top surface of expanding the core has been placed and has been connected the clamp plate of expanding the core, and the diameter of clamp plate is unanimous with the diameter of expansion lamella, and the pneumatic cylinder that is used for extrudeing the core that expands is installed at the top of clamp plate, through setting up the clamp plate, can avoid the pneumatic cylinder directly to extrude the core that expands, and then damages the core that expands.

Further, the locating ring fixedly connected with the limiting ring is arranged on the periphery of the pressing plate, the limiting ring is of a circular ring structure formed by a plurality of circular arc blocks, and the limiting ring can be fixed through the locating ring, so that the limiting ring formed by the circular arc blocks is fixed.

Further, the baffle ring is installed to the periphery of spacing ring, and the inside wall and the multi-lamella spacing ring of baffle ring are hugged closely, and the bottom surface and the bottom plate of baffle ring are connected, because the core that expands can have great pressure to the spacing ring at the in-process of removing and squeezing the part for the spacing ring has slight displacement, and can carry out spacingly to the removal of spacing ring through setting up the baffle ring, avoids appearing the spacing ring bottom plate under the effort of expanding the core.

Drawings

FIG. 1 is a schematic view of a base plate of the present utility model;

FIG. 2 is a schematic view of a retainer ring according to the present utility model;

FIG. 3 is a schematic view of a platen of the present utility model;

FIG. 4 is a schematic view of a retaining ring according to the present utility model;

FIG. 5 is a schematic view of an expanding core of the present utility model;

FIG. 6 is a schematic diagram of the assembly of the expansion valve and hole flanging rod of the present utility model;

FIG. 7 is a schematic view of a stop collar of the present utility model;

FIG. 8 is a schematic illustration of the part tooling of the present utility model;

FIG. 9 is a schematic view of a hole flanging bar according to the present utility model;

FIG. 10 is a schematic view of the assembly of the expanding core, expanding petals and stop collar of the present utility model;

FIG. 11 is a schematic diagram of the general assembly of the present utility model;

FIG. 12 is a schematic top view of the assembly of the present utility model;

FIG. 13 is a schematic view of the section (A-A) of FIG. 12 according to the present utility model.

Reference numerals in the drawings of the specification include:

the expansion valve comprises an expansion valve 1, a first working surface 1-1, an expansion core 2, a limiting ring 3, a second working surface 3-1, a pressing plate 4, a positioning ring 5, a bottom plate 6, a baffle ring 7, a part 8 and a hole flanging rod 9.

Detailed Description

The following is a further detailed description of the embodiments:

the examples are basically as shown in figures 1-13:

taking fig. 11 as an example, in the drawing, a pressing plate 4 is disposed on top of the expansion core 2, taking this as a direction reference.

In an aeroengine, a cylindrical part 8 is arranged, the part 8 is made of sheet iron, uniformly distributed hole flanging is required to be formed on the surface of the part 8, the hole flanging operation of the part 8 is required to be performed by fixing the part 8 by using a die, and then the hole flanging operation is performed.

As shown in fig. 1, the mold is placed on a disc-shaped bottom plate 6, the bottom plate 6 is made of medium silicon molybdenum ductile cast iron, the bottom plate 6 is shown in fig. 1, the bottom plate 6 is placed on a supporting table, the lower part of the supporting table is connected with the ground, and the supporting table is not drawn in the drawing; an annular baffle ring 7 is arranged on the bottom plate 6, the structure of the baffle ring 7 is shown in the figure 2, the circle center of the baffle ring 7 and the circle center of the bottom plate 6 are positioned at the same position, the surface of the baffle ring 7 vertically penetrates through threaded holes uniformly distributed, and bolts are connected with the holes in the threads to connect the bottom plate 6 and the baffle ring 7 into a whole.

The bottom plate 6 is provided with expansion petals 1 which can be expanded outwards, the expansion petals 1 are made of medium silicon molybdenum ductile cast iron as shown in fig. 6, the expansion petals 1 are provided with six expansion petals 1, the six expansion petals 1 form annular hole flanging blocks, the circle centers of the hole flanging blocks are positioned at the same position as the circle centers of the bottom plate 6, six through step holes are formed in the radial direction at the lower part of each expansion petal 1, a hole flanging rod 9 for hole flanging operation is placed in each step hole, the section of the hole flanging rod 9 is elliptical, stainless steel is used as a material, stepped protrusions are arranged at the upper part of the hole flanging rod 9, and the hole flanging rod 9 is in clearance fit with the through holes of the expansion petals 1; the periphery of a hole flanging block formed by the four expansion petals 1 is provided with a first working surface 1-1, the first working surface 1-1 and the expansion petals 1 are integrally formed, the first working surface 1-1 is positioned at the lower part of the expansion petals 1, the diameter of the first working surface 1-1 is smaller than that of the upper part of the expansion petals 1, and a part 8 is sleeved at the first working surface 1-1 to carry out hole flanging operation.

The periphery of the hole flanging block is provided with a circular limiting ring 3, the limiting ring 3 is made of medium silicon molybdenum ductile cast iron, as shown in a figure 7, the limiting ring 3 is composed of three circular arc-shaped block structures, the limiting ring 3 and the expansion valve 1 are slidably arranged on the bottom plate 6, the lower part of the inner side wall of the limiting ring 3 is provided with a second working surface 3-1 corresponding to the first working surface 1-1, the second working surface 3-1 is provided with a through hole penetrating radially, the through hole formed in the first working surface 1-1 is consistent and corresponding to the through hole formed in the second working surface 3-1, and a part 8 is arranged between the first working surface 1-1 and the second working surface 3-1.

A conical frustum-shaped expansion core 2 is arranged at the center of the hole flanging block, the expansion core 2 is matched with the conical surface of the hole flanging block, the expansion core 2 is shown in figure 5, the expansion core 2 is made of medium silicon molybdenum ductile iron, and one end of the expansion core 2 with a smaller diameter extends into the hole flanging block; when the expansion core 2 moves towards the bottom plate 6 in the hole flanging block, the expansion valve 1 expands outwards under the action of the expansion core 2, at the moment, the part 8 between the expansion valve 1 and the limiting ring 3 is extruded, the overturning rod moves towards the periphery, and hole flanging of the part 8 is completed; the installation of the expansion core 2, the expansion valve 1 and the limiting ring 3 is shown in figure 10.

Four evenly distributed threaded holes are formed in the top wall of the expansion core 2, meanwhile, a disc-shaped pressing plate 4 is placed at the top of the expansion core 2, four step-shaped stepped through holes are vertically formed in the surface of the pressing plate 4 as shown in figure 3, the expansion core 2 and the pressing plate 4 can be connected together by inserting bolts into the lower portions of the step-shaped threaded holes, holes formed in the surface of the pressing plate 4 are step holes, lifting ring screws are connected to the upper portions of the step holes through the step holes, lifting devices are used for drawing in the drawing, the pressing plate 4 and the expansion core 2 can be lifted out through the lifting devices and the lifting ring screws before or after machining of the part 8, and the machined part 8 is taken out or the part 8 to be machined is put into the part 8.

The periphery of the pressing plate 4 is provided with a circular positioning ring 5, the periphery of the positioning ring 5 is provided with a plurality of through holes which are uniformly vertically distributed, the top surface of the limiting ring 3 is also provided with threaded holes which are consistent with the positions of the through holes of the positioning ring 5, and the positioning ring 5 and the limiting ring 3 can be connected together by connecting bolts in the through holes; when the expansion core 2 continuously moves to one side of the baffle plate, the limiting ring 3 and the baffle ring 7 are arranged and installed, so that the limiting ring 3 can be firmly fixed, and the situation that the limiting ring 3 is greatly displaced when the hole flanging operation is carried out on the part 8 to influence the processing of the part 8 is avoided; the top of clamp plate 4 is provided with the pneumatic cylinder, and the output of pneumatic cylinder contacts with the top surface of clamp plate 4, promotes the expansion core 2 through the extrusion of pneumatic cylinder and removes to the one end of bottom plate 6, realizes the hole flanging operation to part 8.

The specific implementation process is as follows:

when hole flanging operation is required to be carried out on the side face of the annular part 8, a hole for hole flanging is formed in the side face of the part 8 in advance, hoisting equipment is connected with a hoisting ring screw connected with the top of the pressing plate 4, the expansion valve 1 is pushed by hand at the moment, a larger gap is reserved between the expansion valve 1 and the limiting ring 3, the part 8 to be machined is placed between the expansion valve 1 and the first working face 1-1 and the second working face 3-1 on the limiting ring 3 at the moment, the pressing plate 4 and the expansion core 2 are hoisted to the center of the expansion valve 1, the pressing plate 4 is extruded by the output end of the hydraulic cylinder, the expansion core 2 is forced to move towards the bottom plate 6, the expansion valve 1 is outwards expanded at the moment, the part 8 between the first working face 1-1 and the second working face 3-1 is extruded by the hole flanging rod 9, and the part 8 is subjected to hole flanging under the pushing of the expansion core 2, so that hole flanging operation is realized, after the part 8 is machined, the expansion core 2 and the pressing plate 4 are hoisted out, and the machined part 8 is taken out.

The foregoing is merely exemplary embodiments of the present utility model, and specific structures and features that are well known in the art are not described in detail herein. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent. The protection scope of the present utility model is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims (7)

1. The utility model provides a compound mould suitable for titanium alloy section of thick bamboo wall turns over hole, includes the bottom plate that is used for placing the part and turns over the hole, its characterized in that, the face middle part of bottom plate is provided with the expansion lamella that is the ring form by turning over the hole piece assembly, and the expansion lamella can outwards expand, the periphery of expansion lamella is provided with the annular spacing ring of ring, leaves the gap of placing the part between spacing ring and the expansion lamella, evenly distributed has the hole flanging stick that can outwards slide and be used for turning over the hole on expansion lamella and the spacing ring, sliding connection between hole flanging stick and expansion lamella and the spacing ring.

2. A composite mould for hole flanging of titanium alloy cylinder walls according to claim 1, wherein: the outer peripheral side of each expansion valve is provided with a step-shaped first working surface, a through hole for placing a hole flanging rod is transversely formed in the first working surface of each expansion valve, and the hole flanging rod can slide outwards.

3. A composite mould for hole flanging of titanium alloy cylinder walls according to claim 2, wherein: the inner side surface of the limiting ring is provided with a second working surface which can be matched with the expansion valve working surface, and a through hole for placing a hole flanging rod is formed in the second working surface of the limiting ring.

4. A composite mould for hole flanging of titanium alloy cylinder walls according to claim 2, wherein: the hollow center of the hole flanging block is provided with a truncated cone-shaped expansion core, and one side of the expansion core with a shorter diameter extends into the hollow interior of the hole flanging block.

5. A composite die for hole flanging of titanium alloy cylinder walls according to claim 4, wherein: the top surface of the expansion core is provided with a pressing plate connected with the expansion core, and the diameter of the pressing plate is consistent with that of the expansion valve.

6. The composite die suitable for hole flanging of titanium alloy cylinder walls according to claim 5, wherein: and a positioning ring fixedly connected with the limiting ring is arranged on the periphery of the pressing plate.

7. A composite mould for hole flanging of titanium alloy cylinder walls according to claim 1, wherein: the periphery of the limiting ring is provided with a baffle ring, the inner side wall of the baffle ring is clung to the limiting ring, and the bottom surface of the baffle ring is connected with the bottom plate.