CN220921099U - Switching frock for draw groove - Google Patents

Abstract

The application relates to the technical field of broaching of disc ring pieces, and particularly discloses a transfer tool for a broaching groove, which comprises a base with a detachable top surface and a transfer disc with a detachable top surface, wherein the base is detachably arranged on a frame of a broaching machine, the transfer disc is detachably arranged on the top surface of the base, a chute for a broach to pass through is arranged at the edge of the base, a sample can be eccentrically arranged at the top of the transfer disc, a formal piece can be coaxially arranged at the top of the transfer disc, and a notch for the broach to pass through is formed at the edge of the transfer disc. The technical scheme can solve the problem that the slot clamp for the test piece and the slot clamp for the formal piece cannot be used universally when the existing turbine disc is used for slot.

Description

Switching frock for draw groove

Technical Field

The utility model relates to the technical field of broaching of disc ring pieces, in particular to an adapter tool for broaching grooves.

Background

Turbine discs are typical rotating components of an aircraft engine, whose mass and mechanical properties directly affect the overall performance and service life of the engine. Therefore, when the high-pressure turbine disk is formed, strict requirements are imposed on the machining process. In the processing and shaping of the high-pressure turbine disk, there are mainly a pull test piece mortise and a pull formal piece mortise, the mortise is used for joggling with the blade. The test piece is a small-sized disc, also called mini disc, and the official piece mortise can be pulled only when the size of the pull test piece mortise meets the design requirement. Thus, the broaching process of small block tongue and groove sizes is critical.

At present, in the actual machining process of a turbine disc, a special clamp is adopted to mount the clamp for pulling a test piece mortises on a grooving machine, a large clamp design is adopted to the clamp for pulling a formal piece, the large clamp comprises a chassis and a gland, the whole disc of the formal piece can be stably supported through the chassis, and the formal piece is limited in the clamp through the gland. During actual processing, the test piece is firstly installed on the test piece clamp through the fastening screw, and then the whole test piece is installed on the frame of the broaching machine for broaching. After the test piece is grooved, the whole test piece clamp is detached, the test piece is detached, infrared measurement is carried out on the groove type of the test piece, after the groove type reaches the standard, the formal part is mounted on the large clamp, and then the large clamp is integrally mounted on a frame of a groove broacher, so that formal broaching is started. The test piece clamp is large in size, heavy in weight and complex in installation, the clamp installation can be completed only by a lifting appliance, and a large amount of labor time cost is consumed in lifting, connecting, fastening and adjusting during installation. Meanwhile, the test piece clamp and the large clamp cannot be used universally, repeated hoisting and disassembly are carried out, and the production efficiency of the on-site high-pressure turbine disc is directly affected.

For the above reasons, it is needed to design a transfer tool for a groove to meet the production requirement of a field turbine disk and improve the production efficiency of the high-pressure turbine disk.

Disclosure of utility model

The utility model provides a transfer tool for a pull groove, which aims to solve the problem that a pull groove clamp for a test piece and a pull groove clamp for a formal piece cannot be commonly used when a traditional turbine disk pulls grooves.

In order to solve the problems, the utility model adopts the following technical scheme: the utility model provides a change frock for draw groove, includes can fix in the draw groove machine frame, be connected with detachable base on the mount pad, the base is used for restricting the advancing direction of draw groove machine broach, be connected with detachable adapter on the base, but eccentric installation test block on the adapter, but coaxial arrangement formalism spare on the adapter, the adapter border is opened has the opening that can be covered by the outer edge of test block bottom surface.

The basic principle of the scheme is as follows: when the groove is pulled, the broach is contacted with the side wall of the machined part and is pulled through, the test block is eccentrically arranged on the adapter, the edge of the test block is tangent to the edge of the adapter, the test block can be directly arranged on the adapter to pull the groove, the test block is dismounted after the groove is pulled to verify the groove type, the formal part is directly and coaxially arranged on the adapter, the edge of the formal part coincides with the edge of the adapter, and the broach directly broaches a mortice on the side wall of the formal part after passing through the notch.

The beneficial effect of this scheme is:

When the existing turbine disc is used for drawing grooves, the size of a sample is different from the size of a formal part due to the necessity of groove type verification procedures and the control of production cost, so that the installation positions of the sample and the formal part are different, the existing sample clamp and the formal part clamp cannot be used commonly, a large amount of production time is consumed when the groove is formed, the clamp is detached, the clamp is lifted and replaced, the production efficiency is affected, the turntable designed by the scheme can be used for installing the sample and the formal part at the same time, redundant clamp conversion and lifting processes are reduced, and the production efficiency of the turbine disc is improved.

Further, a plurality of through holes are formed in the adapter at intervals along the circumferential direction, inner hexagon bolts penetrate through the through holes from bottom to top, locking shafts are connected to the top of the inner hexagon bolts in a threaded mode, test blocks are sleeved on the locking shafts, and nuts capable of compressing the test blocks are connected to the upper ends of the locking shafts in a threaded mode.

Further, a clamp cushion block sleeved on the locking shaft is arranged between the nut and the test block. The nut is prevented from directly contacting the surface of the adapter, and the adapter is prevented from being damaged by friction.

Further, the first stopper of connection can be dismantled to the mount pad top surface, open on the interior edge of adapter has the opening that matches with first stopper, and first stopper can restrict the circumference degree of freedom of adapter on the mount pad.

Further, the top surface axis department of mount pad can dismantle and be connected with the reference column, the side of reference column can be dismantled and be connected with the second stopper, the reference column outward flange is opened there is the opening that can match with the second stopper, and the second stopper can restrict the circumference degree of freedom of reference column on the mount pad.

Further, the top of base is opened there is the rectangle spacing groove, be equipped with detachable third stopper in the rectangle spacing groove, the diapire of adapter is opened there is the recess that can block into first stopper and third stopper, through the circumference degree of freedom of recess restriction adapter on the base.

Further, a detachable gland is sleeved on the positioning column, and the outer peripheral walls of the base and the gland are provided with inclined slots for the broachers of the slot broachers to pass through. The gland can compress the formal part on the base during formal processing.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of the present utility model;

FIG. 2 is a bottom perspective view of the adapter and the structure above the adapter according to the embodiment of the present utility model;

FIG. 3 is a top perspective view of the adapter according to the embodiment of the present utility model;

FIG. 4 is a top view of an embodiment of the present utility model;

FIG. 5 is a cross-sectional view taken along the direction C-C in FIG. 4;

fig. 6 is a schematic view of the gland 15.

Detailed Description

The following is a further detailed description of the embodiments:

Reference numerals in the drawings of the specification include: the device comprises a mounting seat 1, a base 2, an adapter seat 3, a first limiting block 41, a second limiting block 42, a third limiting block 43, a clamp cushion block 5, a locking shaft 6, a positioning column 7, a chute 8, a counter bore 9, a through hole 10, an inner hexagon bolt 11, a test piece 12, a notch 13, a nut 14 and a gland 15.

An example is substantially as shown in figures 1 to 6:

The utility model provides a draw groove is with switching frock, includes from down supreme mount pad 1, base 2, switching seat 3, stopper, anchor clamps cushion 5, the locking axle 6 that sets gradually.

The mounting seat 1 is disc-shaped, and a vertical positioning column 7 is coaxially mounted in the middle of the mounting seat. Six positioning holes are formed in the positioning column 7 at intervals along the circumferential direction and are used for integrally bolting the mounting seat 1 to the frame of the slot pulling machine, rectangular openings are formed in the edges of the positioning column 7 beside the positioning holes, and the openings are matched with the rectangular second limiting blocks 42, so that the circumferential freedom degree of the positioning column 7 on the mounting seat 1 is limited. The gland 15 is sleeved on the positioning column 7, key grooves are formed in the outer wall of the positioning column 7 and the inner wall of the gland 15, the gland 15 can be connected to the positioning column 7 through the key grooves, and the freedom degree of the gland 15 in the circumferential direction of the positioning column 7 is limited. The upper end of the positioning column 7 is machined with internal threads, after the gland 15 is connected to the positioning column 7 in a key way, a bolt passes through the gland 15 and is screwed on the positioning column 7, so that the gland 15 is fixed with the mounting seat 1.

The base 2 is circular, the top surface of the mounting seat 1 is provided with a threaded blind hole, a through hole is formed in the base 2 corresponding to the threaded blind hole, and the base 2 is fixed on the top surface of the mounting seat 1 by penetrating through the through hole and the threaded blind hole through a bolt. The periphery wall of the base 2 is provided with a plurality of inclined grooves 8 which are all arranged along the circumferential direction, the angle of each inclined groove 8 is designed according to the tongue-and-groove inclination of the turbine disc, and the periphery wall of the gland 15 is also provided with the inclined groove 8. The broaching tool on the slot machine forms the mortise size of the turbine disk along the chute 8. When the turbine disk main part is processed, the turbine disk main part is coaxially installed on the top surface of the base 2 through bolts.

The external diameter of mount pad 1 is less than the external diameter of base 2, guarantees that broach can be parallel pass through chute 8 of base 2 smoothly. The inner edge of the base 2 is provided with a rectangular opening which is used for being matched with a rectangular first limiting block 41, the first limiting block 41 is fixed on the mounting seat 1, and the circumferential freedom degree of the base 2 on the mounting seat 1 is limited through the first limiting block 41.

The adapter seat 3 is fixed on the top surface of the base 2 in a ring shape, eight counter bores 9 are formed in the circumferential direction of the adapter seat 3, threaded through holes are formed in the positions, corresponding to the counter bores 9, of the top surface of the base 2, and the adapter seat 3 and the base 2 mounting seat 1 can be fixed into a whole through bolts penetrating through the counter bores and the threaded through holes. The top surface of the base 2 is provided with a rectangular limiting groove, a third limiting block 43 can be installed in the limiting groove, the third limiting block 43 and the second limiting block 42 are higher than the top surface of the base 2, and grooves are correspondingly formed in the bottom surface of the adapter 3, so that the tops of the second limiting block 42 and the third limiting block 43 can be clamped from top to bottom, and the circumferential freedom degree of the adapter 3 on the base 2 is limited. Two through holes 10 are formed in the top surface of the adapter seat 3 along the circumferential direction, and the distance between the through holes 10 and the circle center is smaller than the inner diameter of the base 2. The lower end of the through hole 10 is in a step shape, and the through hole 10 can be internally penetrated through the hexagon socket head cap screw 11 from bottom to top.

The upper end threaded connection locking axle 6 of hexagon socket head cap screw 11, the coaxial screw thread blind hole of lower extreme machine tooling of locking axle 6, the external screw thread is seted up to the upper end of locking axle 6. The circular disc type test piece 12 is horizontally sleeved on the locking shaft 6, the bottom wall of the circular disc type test piece 12 contacts with the top wall of the adapter seat 3, the clamp cushion block 5 is coaxially arranged on the top wall of the test piece 12, the clamp cushion block 5 is also sleeved on the locking shaft 6, a nut is screwed on the external thread of the locking shaft 6, and the test piece 12 is tightly pressed on the adapter seat 3.

A plurality of notches 13 are formed between the edges of the adapter seat 3, the positions of the notches 13 correspond to the positions of the through holes 10 in the adapter seat 3, after the test piece 12 is coaxially arranged on the through holes 10, the test piece 12 horizontally covers the notches 13, and a broach can pass through the notches 13 and pull out a groove shape on the test piece 12.

The specific implementation process is as follows:

After the base 2 and the adapter seat 3 are fixed to the mounting seat 1, one of the openings 13 of the adapter seat 3 corresponds to the chute 8 at the edge of the base 2, one of the through holes 10 on the adapter seat 3 is selected, the locking shaft 6 is mounted on the through hole 10, the test piece 12 and the cushion block are sequentially sleeved on the locking shaft 6 and locked by nuts, the whole mounting seat 1 is fixed to a frame of a slot broaching machine, the travelling route of the broach is parallel to the ground, at the moment, the opening of the opening 13 is tangential to the travelling route of the broach, the slot broaching machine is started, the broach firstly passes through the base 2 and then passes through the opening 13, and then contacts and broaches the side wall of the test piece 12, so that the processing of one slot is completed.

The nut 14 is unscrewed, the pad and the test piece 12 are removed, the test piece 12 is moved into a detection machine, the groove type size is verified by utilizing infrared rays, and after the verification is qualified, the formal processing is started.

In the formal processing, the inner hexagon bolt 11 is unscrewed, the locking shaft 6 and the upper part of the locking shaft are dismounted from the through hole 10, the turbine disc is coaxially mounted on the base 2 and fixed, the turbine disc is tightly pressed on the base 2 by the mounting gland 15, and the grooving machine is started to start to broach the turbine disc mortises.

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 draw groove and use switching frock, includes the mount pad that can fix in the draw groove machine frame, its characterized in that: the detachable base is connected to the mounting base and used for limiting the advancing direction of the broach of the slot broaching machine, the detachable adapter is connected to the base, the test block can be eccentrically mounted on the adapter, the formal part can be coaxially mounted on the adapter, and a notch which can be covered by the outer edge of the bottom surface of the test block is formed in the edge of the adapter.

2. The tooling for switching a pull groove according to claim 1, wherein: the adapter is gone up along circumference interval has a plurality of through-holes, from upwards wearing to have the hexagon socket head cap screw down in the through-hole, hexagon socket head cap screw top threaded connection has the locking axle, the test block cover is established on the locking axle, and locking axle upper end threaded connection has the nut that can compress tightly the test block.

3. The tooling for switching a pull groove according to claim 2, wherein: and a clamp cushion block sleeved on the locking shaft is arranged between the nut and the test block.

4. A pull groove switching tool according to claim 3, wherein: the mounting seat top surface can be dismantled and connect first stopper, open on the interior edge of adapter seat has the opening that matches with first stopper, first stopper can restrict the circumference degree of freedom of adapter seat on the mounting seat.

5. The tooling for switching a pull groove according to claim 4, wherein: the locating column is detachably connected to the middle shaft of the top surface of the mounting seat, the second limiting block is detachably connected to the side of the locating column, an opening matched with the second limiting block is formed in the outer edge of the locating column, and the second limiting block can limit the circumferential freedom degree of the locating column on the mounting seat.

6. The tooling for switching a pull groove according to claim 5, wherein: the top of base is opened there is the rectangle spacing groove, be equipped with detachable third stopper in the rectangle spacing groove, the diapire of adapter is opened there is the recess that can block into first stopper and third stopper, through the circumference degree of freedom of recess restriction adapter on the base.

7. The tooling for switching a pull groove according to claim 5, wherein: the positioning column is sleeved with a detachable gland, and the peripheral walls of the base and the gland are provided with inclined slots for the broachers of the slot broaching machine to pass through.