CN211192066U

CN211192066U - Core positioning fixture expands

Info

Publication number: CN211192066U
Application number: CN201922052253.4U
Authority: CN
Inventors: 葛元清; 武虚; 郑维
Original assignee: Wuhu Yongda Technology Co ltd
Current assignee: Wuhu Yongda Technology Co ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-08-07
Anticipated expiration: 2029-11-25

Abstract

The utility model discloses an bloated core positioning fixture relates to the frock clamp field, and it includes lathe housing, fixed station, hydraulic stretching platform, brace table and fixed closing disc have been placed respectively in proper order to one side of lathe housing, the fixed station is through first hexagonal screw fixed mounting on lathe housing, and the fixed station passes through second hexagonal screw and hydraulic stretching platform fixed mounting, brace table passes through interior hexagonal screw and hydraulic stretching platform fixed mounting, and the cover is equipped with rather than the outer core ring that expands who matches on the brace table, fixed closing disc passes through third hexagonal screw and brace table fixed mounting, and the internal diameter of fixed closing disc and outer core ring phase-match that expands, fixed mounting has the pneumatic cylinder on the lathe housing. The utility model discloses novel structure, and simple structure, simple to operate, the practicality is high, suitable popularization.

Description

Core positioning fixture expands

Technical Field

The utility model relates to a frock clamp field especially relates to an bloated core positioning fixture.

Background

In the processing mode in the current mechanical industry, the cooperation of a tool fixture is often needed, particularly, aiming at the situation that a plurality of workpieces are often subjected to hole positioning in the processing process at present, a used positioning element is often a positioning pin shaft, and the fit clearance between the positioning pin shaft and a hole is often the largest source of installation errors, so that various process equipment designed based on zero-clearance positioning are produced, the clearance is eliminated by interference fit, the structure which is compact in structure and integrates positioning and clamping into a whole is inconvenient to assemble and disassemble, and the positioning surface of the workpiece is scratched in the process of inserting and pulling the pin, and therefore, the expansion core positioning fixture is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a pair of core positioning fixture expands has solved the problem that has installation deviation and scratch work piece in the current work piece presss from both sides the dress location.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an expand core positioning fixture, includes lathe housing, fixed station, hydraulic stretching platform, brace table and fixed sealing disc have been placed respectively in proper order to one side of lathe housing, the fixed station is through first hexagonal screw fixed mounting on lathe housing, and the fixed station passes through second hexagonal screw and hydraulic stretching platform fixed mounting, the brace table passes through interior hexagonal screw and hydraulic stretching platform fixed mounting, and the cover is equipped with the outer core ring that expands rather than matcing on the brace table, fixed sealing disc passes through third hexagonal screw and brace table fixed mounting, and the internal diameter and the outer core ring phase-match that expands of fixed sealing disc, fixed mounting has the pneumatic cylinder on the lathe housing, the output fixed mounting of pneumatic cylinder has the pull rod, the pull rod all runs through fixed station, hydraulic stretching platform and brace table, and the top fixed mounting of pull rod has the footstep.

Preferably, the surface of the outer expansion core ring is provided with grooves which are staggered up and down.

Preferably, the upper surface of the outer expansion core ring is higher than the top end of the support platform.

Preferably, the top table is in the shape of an inverted round table, and the die drawing angle of the top table is matched with the outer expansion core ring.

Preferably, the fixed table and the hydraulic telescopic table are both internally provided with cavities.

The utility model has the advantages that: adopt assembled design, through the corresponding part of fixed mounting on the fixed station of fixing on the lathe in this anchor clamps, constitute whole frock, easy to assemble, and in later stage maintenance or change the part of damage, convenient dismantlement, supporting bench and outer bloated core ring all can be changed simultaneously and match the use, satisfy in the fixed requirement of processing location of different hole site sizes, the practicality is high. In this anchor clamps, adopt the mode of outer inflation, after the pneumatic cylinder pulls the pull rod to the rear, the top platform of pull rod top outwards extrudees outer bloated core ring, reaches to fix the work piece through the mode of inflation, more accurate finding the machining center line of work piece, has avoided the hole site deviation that the fixed process of work piece location exists and the problem of scratch appears, and the work piece stroke can be adjusted to the hydraulic telescoping platform that sets up in the anchor clamps simultaneously, convenient processing.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is an assembly view of the present invention.

Fig. 4 is a schematic structural view of the external expansion core ring of the present invention.

In the figure: the lathe comprises a lathe shell 1, a fixing table 2, a hydraulic telescopic table 3, a supporting table 4, a fixing sealing disc 5, an outer expansion core ring 6, a top table 7, a pull rod 8, a hydraulic cylinder 9, a first hexagon screw 10, a second hexagon screw 11, a third hexagon screw 12, an inner hexagon screw 13 and a groove 14.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-4, an expansion core positioning fixture comprises a lathe shell 1, a fixed table 2, a hydraulic telescopic table 3, a supporting table 4, a fixed seal disc 5, an outer expansion core ring 6, a top table 7, a pull rod 8, a hydraulic cylinder 9, a first hexagon screw 10, a second hexagon screw 11, a third hexagon screw 12, an inner hexagon screw 13 and a groove 14, wherein the fixed table 2, the hydraulic telescopic table 3, the supporting table 4 and the fixed seal disc 5 are sequentially and respectively placed on one side of the lathe shell 1, the fixed table 2 is fixedly installed on the lathe shell 1 through the first hexagon screw 10, the fixed table 2 is fixedly installed with the hydraulic telescopic table 3 through the second hexagon screw 11, the supporting table 4 is fixedly installed with the hydraulic telescopic table 3 through the inner hexagon screw 13, the supporting table 4 is sleeved with the outer expansion core ring 6 matched with the supporting table 4, the fixed seal disc 5 is fixedly installed with the supporting table 4 through the third hexagon screw 12, and the internal diameter of fixed closing disc 5 and the core ring 6 phase-match that expands outward, fixed mounting has pneumatic cylinder 9 on lathe casing 1, the output fixed mounting of pneumatic cylinder 9 has pull rod 8, pull rod 8 all runs through fixed station 2, hydraulic stretching platform 3 and brace table 4, and pull rod 8's top fixed mounting has a footstock 7, the surface of core ring 6 that expands outward has all been seted up and has been crisscross slot 14 from top to bottom, the upper surface of core ring 6 that expands outward is higher than the top of brace table 4, footstock 7 is the shape of the round platform of falling, and the drawing die angle of footstock 7 and the core ring 6 phase-match that expands outward, the cavity has all been seted up to fixed station 2 and the inside of hydraulic stretching platform 3.

The fixed sealing disc 5, the supporting table 4 and the hydraulic telescopic table 3 are respectively and fixedly arranged on the supporting table 4, the hydraulic telescopic table 3 and the fixed table 2 in sequence, meanwhile, the pull rod 8 penetrates through the supporting table 4 and the hydraulic telescopic table 3, the top end of the pull rod 8 is fixedly provided with the jacking table 7, the assembly is completed, in use, a workpiece is placed on the outer expansion core ring 6, the hydraulic cylinder 9 is driven to drive the pull rod 8 to contract, the jacking table 7 is pulled to move towards the hydraulic cylinder 9 under the movement of the pull rod 8, the jacking table 7 extrudes the outer expansion core ring 6, as the outer expansion core ring 6 is provided with the vertically staggered grooves 14, the outer expansion core ring 6 expands outwards under the extrusion of the jacking table 7, and under the action of the fixed sealing disc 5, the outer expansion core ring 6 cannot expand excessively to cause the damage of the outer expansion core ring 6, so that the effect of fixing the workpiece is achieved, and the hole center line of the workpiece is ensured to be consistent with the outer expansion core ring, the accuracy of processing has been guaranteed, the error is avoided, when the work piece of not unidimensional needs add, with brace table 4, fixed closing disc 5, outer bloated core ring 6 and top platform 7 change for satisfying the requirement, the reassembly can satisfy different processing requirements.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. An expansion core positioning clamp comprises a lathe shell (1) and is characterized in that a fixed table (2), a hydraulic telescopic table (3), a supporting table (4) and a fixed sealing disc (5) are sequentially and respectively placed on one side of the lathe shell (1), the fixed table (2) is fixedly installed on the lathe shell (1) through a first hexagon screw (10), the fixed table (2) is fixedly installed with the hydraulic telescopic table (3) through a second hexagon screw (11), the supporting table (4) is fixedly installed with the hydraulic telescopic table (3) through an inner hexagon screw (13), an outer expansion core ring (6) matched with the supporting table (4) is sleeved on the supporting table (4), the fixed sealing disc (5) is fixedly installed with the supporting table (4) through a third hexagon screw (12), the inner diameter of the fixed sealing disc (5) is matched with the outer expansion core ring (6), and a hydraulic cylinder (9) is fixedly installed on the lathe shell (1), the output fixed mounting of pneumatic cylinder (9) has pull rod (8), pull rod (8) all run through fixed station (2), hydraulic telescoping table (3) and brace table (4), and the top fixed mounting of pull rod (8) has a top platform (7).

2. The core expanding positioning fixture as claimed in claim 1, wherein the surface of the outer core expanding ring (6) is provided with grooves (14) which are staggered up and down.

3. An expansion core positioning fixture according to claim 1, characterized in that the upper surface of the outer expansion core ring (6) is higher than the top end of the support table (4).

4. The core expanding positioning fixture as claimed in claim 1, wherein the top table (7) is in the shape of an inverted circular truncated cone, and the drawing angle of the top table (7) is matched with the outer core expanding ring (6).

5. The core expanding positioning fixture as claimed in claim 1, wherein cavities are formed in the fixing table (2) and the hydraulic telescopic table (3).