CN202129654U

CN202129654U - Aligning clamp frock for fine reference surface of thin-wall casting

Info

Publication number: CN202129654U
Application number: CN 201120183321
Authority: CN
Inventors: 于鲁萍; 曲波; 曲凤新; 孙成志; 张耀; 马海波; 苗军华; 姜伟; 李砾
Original assignee: Aerospace Science and Industry Inertia Technology Co Ltd
Current assignee: Aerospace Science and Industry Inertia Technology Co Ltd
Priority date: 2011-06-02
Filing date: 2011-06-02
Publication date: 2012-02-01
Anticipated expiration: 2021-06-02

Abstract

The utility model discloses an aligning clamp frock for the fine reference surface of a thin-wall casting, which comprises a first cylinder base, a stud, a rectangular steel plate, a magnet, bolt assemblies, a pressure plate, a bulb stud and a second conical base. The first cylinder base is threadedly connected with the stud. The magnet adsorbed on the rectangular steel plate is movable. The bulb stud is threadedly connected with the second conical base. Two sets of bolt assemblies are pressed against the pressure plate and a casting is fixed to the workbench of a machine tool. The frock is used for aligning and machining the fine reference surface of a thin-wall casting. Due to the adoption of the frock, the machining precision and the production efficiency of castings are improved and the contact rigidity of the technical system is increased. Meanwhile, the residual stress due to the clamping deformation of castings is reduced and the long-term stability of the machining precision of castings is improved.

Description

The centering clamping frock of the smart datum level of a kind of thin-section casting

Technical field

The utility model relates to the centering clamping frock of the smart datum level of a kind of foundry goods, particularly relates to the centering clamping frock of the smart datum level of a kind of thin-section casting.

Background technology

At present, in industries such as Aeronautics and Astronautics, foundry goods is used by a large amount of, and a lot of thin-section castings are carriers of precision instrumentation, and the accuracy of form and position and stability requirement thereof are very high.The centering clamping of the smart datum level of foundry goods is the basis that guarantees the mutual alignment precision of machining accuracy, particularly installed surface; The residual stress that clamping deformation causes is the key factor that influences part stability.The centering clamping frock of the smart datum level of existing foundry goods; The main tack that adopts supports (Fig. 5 shows) centering clamping frock; Through face way of contact centering, the centering precision is lower, and clamping deformation is bigger; And cause thin-section casting to produce bigger residual stress, can not satisfy the requirement of part processing precision long-time stability.

The utility model content

The purpose of the utility model is to provide the centering clamping frock of the smart datum level of a kind of thin-section casting; This frock has solved the problem that the smart datum level machining accuracy of thin-section casting is low, distortion is big; Reduce the residual stress that clamping deformation causes, improved foundry goods machining accuracy long-time stability.

The implementation of the utility model:

The centering clamping frock of the smart datum level of a kind of thin-section casting comprises cylindrical seat, double-screw bolt, rectangular steel plates, magnet, bolt assembly, pressing plate, ball stud and circular cone base, and wherein there is screwed hole at the cylindrical seat center, and is threaded with double-screw bolt; The right ends of rectangular steel plates respectively is provided with magnet, and the magnet positions that is adsorbed on the steel plate can move, and the group of magnets of rectangular steel plates and right ends becomes the spill pressing plate; There is screwed hole at the center of pressing plate, and is threaded with bolt assembly; The circular cone center has screwed hole, and is threaded with ball stud, forms bulb and supports.

The beneficial effect of the utility model:

The centering clamping frock of the smart datum level of a kind of thin-section casting has changed the original face way of contact through the bulb support, makes the thin-section casting centering convenient, and the centering precision improves.The spill pressing plate has changed the stress action spot of foundry goods, reduces casting deformation, reduces the residual stress that clamping causes, improves foundry goods machining accuracy long-time stability.

Description of drawings

The utility model has 5 width of cloth accompanying drawings, wherein:

Fig. 1 uses-mills the datum level structural representation for the centering clamping frock of the smart datum level of a kind of thin-section casting;

Fig. 2 is that the bulb of Fig. 1 supports enlarged diagram;

Fig. 3 is the spill pressing plate enlarged diagram of Fig. 1;

Fig. 4 is that the bulb of Fig. 1 supports the clamping principle schematic;

Fig. 5 supports the clamping principle schematic for prior art tack.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is done and to be further described:

Like Fig. 1,2,3, shown in 4, the centering clamping frock of the smart datum level of a kind of thin-section casting comprises two first cylindrical seat 2, two double-screw bolts 3, rectangular steel plates 4, two blocks of magnet 5, two groups of bolt assemblies 8, two block pressur plates 9, three ball studs 10 and three second circular cone bases 11.Wherein first cylindrical seat 2 and double-screw bolt 3 are to be threaded; Magnet 5 is adsorbed on the rectangular steel plates 4 and the position can be moved; The ball stud 10 and the second circular cone base 11 are to be threaded; Two groups of bolt assembly 8 clamping platens 9 are fixed on foundry goods 6 on the platen 1.

Fig. 1 uses-mills datum level for frock.At first, according to foundry goods 6 structures, just decide three bulbs and be supported on the position on the platen 1; The foundry goods of having rule 6 is placed on the bulb of bulb support; Select the entity structure of foundry goods 6 bottom surfaces; Confirm that three bulbs support and the position of two blocks of magnet 5; The position of two blocks of magnet 5 is supported corresponding to two bulbs, and the 3rd bulb is supported on the symmetrical center line of two bulb supports in addition, and the 3rd bulb Support Position and other two bulb Support Positions formation triangles; Then, difference rotating ballhead double-screw bolt 10, the position of adjustment foundry goods 6 line datum levels utilizes the scriber 7 on the main shaft, and the datum level that the centering line is confirmed is in the 0.2mm scope; Move the bulb position of two blocks of magnet 5 to corresponding bulb support; According to foundry goods 6 positions, confirm the position of two first cylindrical seat 2; According to the bulb position that bulb supports, confirm two block pressur plates 9 wherein two compress a little, application point is on the spill pressing plate and in the centre position that two bulbs support, another piece application point is on foundry goods 6 and the 3rd bulb Support Position; According to a height that compresses of pressing plate 9, the apical side height of two double-screw bolts 3 of adjustment; Utilize two groups of bolt assemblies 8 that two block pressur plates 9 are compressed, foundry goods 6 is fixed on the platen 1; At last, change the scriber on the main shaft 7 into processing that milling cutter carries out smart datum level.

The centering clamping frock of the smart datum level of a kind of thin-section casting is according to 3 theories that determine a plane, and ball stud and circular cone base are formed bulb and supported.Bulb supports the bulb formation point that makes spray bottom surface and ball stud and contacts, and the rotating ballhead double-screw bolt can be adjusted the position of foundry goods line datum level.Rectangular steel plates and two group of magnets concavity pressing plates, its concave structure has changed the stress action spot of foundry goods.Magnet is adsorbed on the rectangular steel plates right ends and the position can be moved; Pass through moving magnet; Make the application point A correspondence of thrust act on the bulb position that two bulbs in bottom surface support, changed the installation way that directly compresses foundry goods originally, improved the contact stiffness of process system; Help reducing casting deformation, reduce the residual stress that clamping causes.

Claims

1. the centering clamping frock of the smart datum level of thin-section casting is characterized in that: comprise first cylindrical seat (2), double-screw bolt (3), rectangular steel plates (4), magnet (5), bolt assembly (8), pressing plate (9), ball stud (10) and the second circular cone base (11); Wherein there is screwed hole at first cylindrical seat (2) center, and is threaded with double-screw bolt (3); The right ends of rectangular steel plates (4) respectively is provided with magnet (5), and there is screwed hole at the center of pressing plate (9), and is threaded with bolt assembly (8); There is screwed hole at second circular cone base (11) center, and is threaded with ball stud (10), forms bulb and supports.

2. the centering clamping frock of the smart datum level of a kind of thin-section casting according to claim 1, it is characterized in that: said rectangular steel plates (4) goes up magnet (5) position of absorption and can move, and the magnet (5) of rectangular steel plates (4) and right ends consists of the spill pressing plate.