CN205393868U - Barrel and otic placode welding jig - Google Patents

Abstract

This novel anchor clamps that belong to, concretely relates to barrel and otic placode welding jig. The utility model provides a barrel and otic placode welding jig, includes holding down plate, guide pillar, otic placode briquetting, top board, chuck, draw the pole support, anchor clamps base, plain washer, hexagon nut, hexagon head bolt, cylindric lock (14), dish nut, tacking screw, percentage table, wherein the anchor clamps base is the base of whole device, sets up the holding down plate on the anchor clamps base, sets up two parallel guide pillars on the holding down plate, sets up in the parallel top board of holding down plate on the guide pillar, sets up the otic placode briquetting on the top board. This neotype effect is: by applying a certain reversible deformation amount to the upper cylinder before welding the pin of the upper tube seat, the influence of welding deformation on the position degree of the lug plate of the upper cylinder is offset. The control method of the reversible deformation size is to tighten a compression nut on the welding fixture, and then a dial indicator is used for measuring and controlling the prepressing deformation of the upper cylinder body.

Description

A cylinder and lug plate welding fixture

technical field

The utility model belongs to a jig, in particular to a welding jig for a cylinder body and an ear plate.

Background technique

The upper nozzle is one of the key components of the high burnup nuclear fuel assembly, and has irreplaceable functions such as hoisting, control rod entry, buffering and shock absorption.

The upper cylinder part is responsible for guiding the connection pipe in the upper tube base, positioning the upper tube base center tube, and providing a connection port for hoisting and transportation of the fuel assembly. Therefore, the manufacturing difficulties are also correspondingly concentrated on the processing of the protective tube hole system of the parts and the position and size control of the lug plate of the upper cylinder.

Since the assembly and welding position of the lug plate of the upper nozzle is related to the hoisting and transportation interface of the fuel assembly, high precision is required. The welding position of the lug plate and the upper cylinder is carried out on the cylindrical surface. If the welding deformation during manufacturing is not well controlled, it will affect the roundness of the upper cylinder, resulting in the position of the ear plate of the upper cylinder being out of tolerance.

There is no good solution to the above problems in the prior art.

Contents of the invention

Aiming at the defects of the prior art, the present invention provides a welding jig for a cylinder body and an ear plate.

The technical scheme of the present invention is: a welding fixture for cylinder body and lug plate, including lower pressure plate, guide column, ear plate pressure block, upper pressure plate, chuck, extension rod, extension rod bracket, fixture base, flat washer, hexagonal nut , hexagonal head bolts, straight pins 14, butterfly nuts, tightening screws, dial indicators, wherein the fixture base is the base of the entire device, a lower pressure plate is set on the fixture base, and two parallel guide columns are set on the lower pressure plate. An upper pressing plate parallel to the lower pressing plate is arranged on the guide post, and an ear plate pressing block is arranged on the upper pressing plate.

A cylinder and lug plate welding jig as described above, wherein an extension rod bracket is arranged on the lower platen, an extension rod is arranged on the extension rod bracket, a collet is arranged on the top of the extension rod, a hex nut is arranged on the collet, and the clip The end of the head is provided with a dial gauge.

The cylinder and lug plate welding fixture as described above, wherein, the upper pressing plate is fixed on the guide post through a flat washer and a hex nut.

The cylinder and lug plate welding jig as described above, wherein, a wing nut is further arranged between the collet and the hexagon nut.

The effect of the new model is: by using the anti-deformation method, a certain amount of anti-deformation is pre-applied to the upper cylinder before welding the pins of the upper tube seat, so as to offset the influence of welding deformation on the position of the ear plate of the upper cylinder. The control method of the anti-deformation size is to tighten the compression nut on the welding fixture, and then use a dial indicator to measure and control the pre-compression deformation of the upper cylinder.

Description of drawings

Fig. 1 is the structural representation when the application fixture works;

Fig. 2 is the structural representation of the clamp of the present application;

Fig. 3 is the front view of the clamp of the present application;

Fig. 4 is a side view of Fig. 3;

FIG. 5 is a top view of FIG. 3 .

In the figure: 1. Lower pressing plate, 2. Guide post, 3. Ear plate pressing block, 4. Upper pressing plate, 5. Chuck, 6. Extension rod, 7. Extension rod bracket, 8. Fixture base, 9.12.15. Flat washer, 10.16. Hex nut, 11.13. Hex head bolt, 14. Cylindrical pin, 17. Wing nut, 18. Tightening screw, 19. Dial indicator, 20. Upper cylinder assembly, 21. Upper cylinder Ear plate, 22. Fixture, 23. Installation position of dial indicator.

detailed description

As shown in Figures 1 to 5, a cylinder and ear plate welding fixture includes a lower pressure plate 1, a guide post 2, an ear plate pressure block 3, an upper pressure plate 4, a chuck 5, an extension rod 6, and an extension rod bracket 7 , Fixture base 8, flat washers (9, 12, 15), hex nuts (10, 16), hex head bolts (11, 13), straight pins 14, wing nuts 17, tightening screws 18, dial indicator 19 , wherein the fixture base 8 is the base of the whole device, the lower platen 1 is set on the fixture base 8, two parallel guide pillars 2 are set on the lower platen 1, and the upper platen 4 parallel to the lower platen 1 is arranged on the guide pillars 2, An ear plate pressing block 3 is arranged on the upper pressing plate 4 .

An extension rod bracket 7 is also arranged on the lower platen 1, an extension rod 6 is arranged on the extension rod bracket 7, a collet 5 is arranged on the top of the extension rod 6, a hex nut 16 is arranged on the collet 5, and a dial indicator is arranged at the end of the collet 5 19.

The upper pressing plate 4 is fixed on the guide post 2 through a flat washer 9 and a hex nut 10 .

A butterfly nut 17 is also arranged between the collet 5 and the hex nut 16 .

The use process of the fixture is roughly as follows: First, fix the welded cylinder and ear plate on the lower pressure plate and the ear plate pressure plate, then adjust the hex nut to apply a certain pre-pressure to the welded part. The value of the pre-pressure can be adjusted by hundreds After the sub-meter is read, the pre-pressure is applied, and the welded parts are welded. After the welding is completed, the welded parts will be removed.

Claims (4)

1. a cylinder and otic placode weld jig, it is characterized in that: include lower platen, guide pillar, otic placode briquetting, top board, chuck, bar of extending, shaft bar of extending, clamp base, plain washer, hex nut, hexagon-headed bolt, straight pin (14), dish shape nut, mark closely screw, dial gauge, wherein clamp base is the base of whole device, clamp base arranges lower platen, lower platen arranges parallel two piece guide pillar, guide pillar is arranged at the top board that lower platen is parallel, top board arranges otic placode briquetting.

2. a kind of cylinder as claimed in claim 1 and otic placode weld jig, it is characterized in that: also set up shaft bar of extending on lower platen, arranging, extending, bar of extending on shaft bar, the top of bar of extending arranges chuck, arranging hex nut on chuck, the end of chuck arranges dial gauge.

3. a kind of cylinder as claimed in claim 2 and otic placode weld jig, it is characterised in that: described top board is fixed on guide pillar by plain washer and hex nut.

4. a kind of cylinder as claimed in claim 3 and otic placode weld jig, it is characterised in that: also set up dish shape nut between described chuck and hex nut.