CN214978420U

CN214978420U - Oil filter cover part clamping tool and welding fixture

Info

Publication number: CN214978420U
Application number: CN202023055496.2U
Authority: CN
Inventors: 蒲旭连; 郭文涛; 张文强; 孙冀平
Original assignee: Qingan Group Co Ltd
Current assignee: Qingan Group Co Ltd
Priority date: 2020-12-17
Filing date: 2020-12-17
Publication date: 2021-12-03
Anticipated expiration: 2030-12-17

Abstract

The utility model belongs to the welding technology, concretely relates to oil filter cover part clamping frock, welding jig and welding method. Oil filter cover part clamping frock includes: the mandrel is of a rod-shaped structure, and the outer diameter of the mandrel is equal to the size of the inner hole of the oil filter cover part and is used for penetrating the inner hole of the oil filter cover part to position and support the oil filter cover part; the jacket comprises a first clamping part and a second clamping part, the first clamping part and the second clamping part are symmetrical and semi-cylindrical, and the diameters of the first clamping part and the second clamping part are equal to the outer diameter of the oil filter cover part and are used for positioning and clamping the oil filter cover part in cooperation with the mandrel. Due to the unique welding protection structure, the quality of the welded weld joint is excellent, the processing difficulty of the oil filter cover is reduced, the processing efficiency is improved, the processing cost is reduced, and the mass production of product parts is convenient to realize.

Description

Oil filter cover part clamping tool and welding fixture

Technical Field

The utility model belongs to the welding technology, concretely relates to oil filter cover part clamping frock and welding jig.

Background

In a hydraulic product, in order to ensure accurate control of an oil circuit, oil filter cover parts are mostly kept away, so that the harm of oil impurities is prevented. The oil filter cover is formed by welding a stainless steel filter screen (a woven microgroove screen) after being curled and formed. Along with the continuous improvement of the requirements on the product performance, the more strict the requirement on the cleanliness of an oil circuit at a key part is, the finer and denser the used filter screen is, and higher requirements are provided for production and processing. The existing welding method of the oil filter cover has resistance welding processing, but the welding seam has the defect of incoherency; due to brazing processing, meshes are easily blocked due to the flowing of brazing filler metal, and the product performance is influenced; the high-energy welding method such as electron beam welding is adopted for processing, but the process difficulty is high, the defects of burning through, wire breakage and the like are easily generated, and the processing cost is high; argon arc welding is available, but reliable welding protection fixtures are needed.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model provides an oil filter cover part clamping frock and welding jig to welding oil filter cover part.

The technical scheme is as follows:

first aspect provides an oil filter cover part clamping frock, includes: the mandrel 12 is of a rod-shaped structure, the outer diameter of the mandrel 12 is equal to the size of the inner hole of the oil filter cover part 13, and the mandrel 12 is used for penetrating the inner hole of the oil filter cover part 13 to position and support the oil filter cover part 13; the jacket 3 comprises a first clamping part and a second clamping part, the first clamping part and the second clamping part are symmetrical and in a semi-cylindrical shape, the diameters of the first clamping part and the second clamping part are equal to the outer diameter of the oil filter cover part 13, and the first clamping part and the second clamping part are used for being matched with the mandrel 12 to position and clamp the oil filter cover part 13.

Further, the mandrel 12 comprises a guide part and a support part, wherein the guide part and the support part are of an integrally formed structure, the outer diameter of the guide part is smaller than the inner hole size of the oil filter cover part 13 for guiding when being installed in the inner hole of the oil filter cover part 13, and the size of the support part is equal to the inner hole size of the oil filter cover part 13.

Further, a small platform structure is arranged at one butt joint end of the first clamping part and the second clamping part.

Further, the mandrel 12 and the jacket 3 are both made of copper or steel.

The second aspect provides an argon arc welds welding jig of welding stainless steel oil filter cover for the stainless steel oil filter cover after the centre gripping with the help of above-mentioned frock clamping includes: a base plate 1; the fixed jaw 2 is positioned at the left end of the upper surface of the bottom plate 1 and is fixedly connected with the bottom plate 1; the movable jaw 4 is arranged at the right end of the upper surface of the bottom plate 1 and can move along the upper surface of the bottom plate 1, and a T-shaped groove is formed in the right end of the movable jaw 4; the support plate 5 is fixedly arranged on the right side surface of the bottom plate 1, and a threaded hole is formed in the support plate 5; knurling nut group, knurling nut group includes knurling nut 10 and packs into the knurling nut and through the housing screw 11 of the fastening of second cylindric lock 9, knurling nut group tip is provided with T type structure, knurling nut group passes the screw hole of extension board and the T type structure setting of knurling nut is in the T font groove on movable vice jaw, drive movable vice jaw through rotatory knurling nut group and move from side to side on bottom plate 1 upper surface, place between fixed vice jaw 2 and movable vice jaw 4 through the oily filter mantle after the preliminary centre gripping of above-mentioned frock, it is tight with the oily filter mantle after preliminary centre gripping to promote movable vice jaw 4 motion by housing screw 11 through rotatory knurling nut 10.

Further, still include: two guide blocks 8, wherein the two guide blocks 8 are fixed on the right side of the upper surface of the bottom plate 1 and guide and limit the front and back side surfaces of the movable jaw.

Furthermore, the lower surface of the bottom plate 1 is an inclined surface, so that the manual clamping is facilitated and the weight is reduced.

Further, the clamping surfaces of the fixed jaw 2 and the movable jaw 4 are inclined surfaces.

Has the advantages that:

adopt the utility model discloses scheme welded stainless steel oil filter cover part, because unique welding protection architecture, weld back welding seam quality is excellent, makes the processing degree of difficulty of oil filter cover reduce, and machining efficiency improves, and the processing cost reduces, is convenient for realize the mass production of product part.

Drawings

FIG. 1 is a pre-weld process flow of an oil filter shroud according to an embodiment of the present invention;

FIG. 2 is a schematic view of an oil filter cover part clamp according to an embodiment of the present invention;

FIG. 3 is a schematic view of an oil filter cover welding fixture according to an embodiment of the present invention;

FIG. 4 is a schematic view of the welding process of the ultra-thin stainless steel oil filter according to an embodiment of the present invention;

fig. 5 is a bottom plate structure view of an oil filter cover welding jig according to an embodiment of the present invention.

The welding device comprises a base plate 1, a fixed jaw 2, a clamping sleeve 3, a movable jaw 4, a support plate 5, screws 6, a first cylindrical pin 7, a guide block 8, a second cylindrical pin 9, a knurled nut 10, a compression screw 11, a mandrel 12, an oil filter cover part 13 and a welding gun 14.

Detailed Description

The invention will be further described with reference to the following drawings and examples:

as fig. 1 to 2, an oil filter cover part clamping frock includes: the mandrel 12 is of a rod-shaped structure, the outer diameter of the mandrel 12 is equal to the inner hole size of the oil filter cover part 13, and the mandrel 12 is used for penetrating the inner hole of the oil filter cover part 13 to position and support the oil filter cover part 13; the jacket 3 comprises a first clamping part and a second clamping part, the first clamping part and the second clamping part are symmetrical and in a semi-cylindrical shape, the diameters of the first clamping part and the second clamping part are equal to the outer diameter of the oil filter cover part 13, and the first clamping part and the second clamping part are used for being matched with the mandrel 12 to position and clamp the oil filter cover part 13.

The mandrel 12 comprises a guide part and a support part, wherein the guide part and the support part are of an integrally formed structure, the outer diameter of the guide part is smaller than the inner hole size of the oil filter cover part 13 and is used for guiding when the inner hole of the oil filter cover part 13 is installed, and the size of the support part is equal to the inner hole size of the oil filter cover part 13. And a small platform structure is arranged at one butt joint end of the first clamping part and the second clamping part. The mandrel 12 and the jacket 3 are both made of copper or steel.

Referring to fig. 1 to 5, a welding jig for welding a stainless steel oil filter casing by argon arc welding comprises: a base plate 1; the fixed jaw 2 is positioned at the left end of the upper surface of the bottom plate 1 and is fixedly connected with the bottom plate 1; the movable jaw 4 is arranged at the right end of the upper surface of the bottom plate 1 and can move along the upper surface of the bottom plate 1, and a T-shaped groove is formed in the right end of the movable jaw 4; the support plate 5 is fixedly arranged on the right side surface of the bottom plate 1, and a threaded hole is formed in the support plate 5; knurling nut group, knurling nut group include knurling nut 10 and pack into the knurling nut and through the housing screw 11 of the fastening of second cylindric lock 9, and knurling nut group tip is provided with T type structure, and knurling nut group passes the screw hole of extension board and the T type structure setting of knurling nut in the T font groove on the activity is kept silent, drives the activity through rotatory knurling nut group and keeps silent side-to-side movement on bottom plate 1 upper surface.

In addition, still include: two guide blocks 8, wherein the two guide blocks 8 are fixed on the right side of the upper surface of the bottom plate 1 and guide and limit the front and back side surfaces of the movable jaw. The lower surface of the bottom plate 1 is an inclined surface, so that the manual clamping is facilitated and the weight is reduced. The clamping surfaces of the fixed jaw 2 and the movable jaw 4 are inclined surfaces.

Example (b):

the specific implementation scheme of argon arc welding for machining the stainless steel oil filter cover part with the diameter phi 8 is further explained as follows:

fig. 1 is a pre-welding processing flow of the oil filter cover, wherein in the first step, the spreading material is calculated and discharged, in the second step, a right-angle bent edge is processed by a bench worker, the height of the bent edge is controlled to be 3-4 mm, and then the filter screen winding circle is aligned. The purpose is to use the material of the right-angle bent edge as fusion welding solder.

FIG. 2 is a schematic view of the oil filter cover part clamping. In operation, the rolled oil filter casing part 13 is assembled on a mandrel (material: copper or steel) 12, and the oil filter casing part 13 is clamped by a jacket (two pieces, material: copper) 3.

FIG. 3 is a schematic view of a weld fixture for the oil filter casing. After the oil filter cover is initially clamped, the oil filter cover is placed between a fixed jaw (material: copper or steel) 2 and a movable jaw (material: copper or steel) 4 of a clamp, the movable jaw 4 is pushed to move in a guide block (material: copper or steel) 8 by a compression screw (steel) 11 through rotating a knurled nut (steel) 10, and an oil filter cover part 13 is clamped. In the clamping process, an operator can correct the state of the filter screen at any time and measure whether the size of the opening of the jacket meets 0.5-1.5 mm. After the clamping sleeve is clamped, an operator can conveniently trim the height of the right-angled bent edge due to the fact that the clamping surface is a small platform, so that the height of the bent edge is kept at 0.5-3 mm, and welding requirements are met. See fig. 4 (a-direction view in fig. 3).

Fig. 4 is a schematic view of a welding process of the stainless steel oil filter casing, which is a view taken along direction a in fig. 3. And (3) placing a welding gun 14 right above the joint of the top ends of the filter screen parts 13, adjusting the angle of the welding gun, keeping the tungsten electrode distance from the top end of the oil filter cover part by 1-2 mm, and then performing argon arc welding without welding wires.

Fig. 5 is a schematic view of the No. 1 shoe sole. In order to reduce the weight of the clamp, partial materials of the base plate of the No. 1 part are cut off to form an inclined plane, so that the clamp is convenient to hold by hand, the weight is reduced, and the working strength is reduced.

The utility model discloses a theory of operation:

firstly, the existing argon arc welding machine is required to have low-power direct current processing characteristics. And secondly, the welding structure of the oil filter cover is formed by fusion welding by using self materials as filling welding fluxes without adding welding wires. Therefore, before rolling the filter screen, the two sides of the filter screen are bent into right-angled edges with a certain height to be used as welding materials.

The welding of the stainless steel oil filter cover is protected by the welding fixture, and the defects of deformation, burnthrough, wire breakage and the like during welding are reduced. The design principle of the welding fixture is as follows: convenient to use, succinct, the protection is effective. The welding fixture adopts the inclined jaw suitable for cylindrical parts to clamp, the inner hole of the curled oil filter cover part is arranged in the mandrel, the outside of the curled oil filter cover part is clamped by the jacket (two parts), the curled oil filter cover part is placed in the inclined jaw to clamp, the clamping force comes from the continuous rotation of the nut, and the part to be welded is only exposed after the filter screen part is clamped. In order to ensure the fusion quality of the welding seam, the opening size of the jacket needs to be controlled to be 0.5-1.5 mm, and the height of the bent edge needs to be trimmed to be 0.5-3 mm before welding.

And finally, welding, namely melting the right-angle bent edge of the oil filter cover by adopting a welding gun to form a welding seam. The weld joint is beautiful and the welding quality is high.

The key points of the technology are as follows: the structural design of a clamping tool and a welding fixture of the stainless steel oil filter cover part. The method mainly comprises the structure and the size parameters of a welding clamp, the material of the clamp and the requirement of repairing the right-angle bent edge of the part to a proper size before welding. The above-mentioned embodiments are merely to describe the preferred embodiments of the present invention, and are not to limit the concept and scope of the present invention, and the present invention is not limited to the above-mentioned embodiments, and various modifications and improvements made by the technical solutions of the present invention by the ordinary engineers in the art should fall within the scope of the present invention.

Claims

1. The utility model provides an oil filter cover part clamping frock which characterized in that includes: the mandrel (12) is of a rod-shaped structure, the outer diameter of the mandrel is equal to the size of an inner hole of the oil filter cover part (13), and the mandrel (12) is used for penetrating the inner hole of the oil filter cover part (13) to position and support the oil filter cover part (13); the clamping sleeve (3) comprises a first clamping part and a second clamping part, the first clamping part and the second clamping part are symmetrical in two semi-cylindrical shapes, the diameters of the first clamping part and the second clamping part are equal to the outer diameter of the oil filter cover part (13), and the clamping sleeve is used for being matched with the mandrel (12) to position and clamp the oil filter cover part (13).

2. The clamping tool according to claim 1, wherein the mandrel (12) comprises a guide portion and a support portion, the guide portion and the support portion are of an integrally formed structure, the outer diameter of the guide portion is smaller than the inner hole of the oil filter cover part (13) for guiding when the oil filter cover part (13) is installed in the inner hole, and the support portion is equal to the inner hole of the oil filter cover part (13).

3. The clamping tool according to claim 1, wherein a small platform structure is arranged at one butt joint end of the first clamping portion and the second clamping portion.

4. The clamping tool according to claim 1, wherein the mandrel (12) and the jacket (3) are both made of copper or steel.

5. A welding fixture for welding a stainless steel oil filter cover by argon arc welding, which is used for clamping the stainless steel oil filter cover clamped by the tool of any one of claims 1 to 4, and is characterized by comprising:

a base plate (1);

the fixed jaw (2) is positioned at the left end of the upper surface of the bottom plate (1) and is fixedly connected with the bottom plate (1);

the movable jaw (4) is arranged at the right end of the upper surface of the bottom plate (1) and can move along the upper surface of the bottom plate (1), and a T-shaped groove is formed in the right end of the movable jaw (4);

the support plate (5) is fixedly arranged on the right side surface of the bottom plate (1), and a threaded hole is formed in the support plate (5);

the knurling nut group, the knurling nut group includes knurling nut (10) and packs into the knurling nut and through hold-down screw (11) of second cylindric lock (9) fastening, knurling nut group tip is provided with T type structure, knurling nut group passes the screw hole of extension board and the T type structure setting of knurling nut is in the T font groove on the adjustable jaw, through rotatory knurling nut group drive adjustable jaw on bottom plate (1) upper surface side-to-side movement, through any one of claims 1-4 the preliminary oily filter mantle of centre gripping of frock place between fixed jaw (2) and adjustable jaw (4), promote adjustable jaw (4) motion through rotatory knurling nut (10) by hold-down screw (11) and press from both sides the oily filter mantle after preliminary centre gripping tightly.

6. The welding fixture of claim 5, further comprising: two guide blocks (8), wherein the two guide blocks (8) are fixed on the right side of the upper surface of the bottom plate (1) and guide and limit the front side surface and the rear side surface of the movable jaw.

7. Welding fixture according to claim 5, characterized in that the lower surface of the base plate (1) is bevelled to facilitate manual clamping while reducing weight.

8. Welding fixture according to claim 5, characterized in that the clamping surfaces of the fixed jaw (2) and the movable jaw (4) are bevelled.