CN211413792U - Small-outer-diameter steel pipe strip-shaped tensile sample processing device - Google Patents

Abstract

The utility model provides a small outer diameter steel pipe strip tensile sample processing device, which comprises a milling machine and a movable workbench, wherein a flat plate is arranged on the movable workbench, a group of V-shaped supports for placing the small outer diameter steel pipes stretched by strips, a fixed positioning clamping jaw and an adjustable positioning device are arranged on the flat plate, and the fixed positioning clamping jaw and the adjustable positioning device are respectively arranged at two sides of the fixed V-shaped supports; a pair of saw blade milling cutters is arranged on a cutter bar of the milling machine and corresponds to the small-outer-diameter steel pipe on the V-shaped support, and a sizing gasket is arranged between the pair of saw blade milling cutters. The utility model has the advantages that: two tensile samples can be processed simultaneously, and the dimensional tolerance and the shape tolerance of the finished tensile sample are within +/-0.05 mm through about five minutes of milling operation, so that the requirements of a tensile test on the samples are completely met; the device has high working efficiency and good processing precision, and is suitable for processing the strip tensile samples of the steel pipes with small outer diameters in large batches.

Description

Small-outer-diameter steel pipe strip-shaped tensile sample processing device

Technical Field

The utility model belongs to the technical field of seamless steel pipe inspection, especially one kind is used for little external diameter steel pipe strip tensile sample processingequipment.

Background

The small-outer-diameter seamless steel pipe is widely applied in China, for example, used for: structural seamless pipes, gas cylinder seamless pipes, fluid conveying seamless pipes, high-pressure boiler seamless pipes and the like are important forces for industrial economic development in China, however, an important index of the performance of the steel pipes is obtained through a tensile test, and the size of a tensile sample seriously influences the result of the tensile test. GB/T228.1 specifies an external diameter of 50mm < D₀The width of a sample which can be taken is b between less than or equal to 70mm₀15mm strip tensile specimen; the outer diameter is more than 30mm and less than D₀A width b of the sample to be taken less than or equal to 50mm₀Strip-shaped pull of 10mmAnd (5) stretching the sample. For the above small outer diameter steel pipe (D)₀Less than or equal to 70mm) strip tensile sample length generally between 240 and 300mm, through the unloading of horizontal sawing machine, then through the milling machine direct processing that immediately mills, the process is more loaded down with trivial details to shape tolerance also hardly guarantees, consequently urgently needs an efficient, convenient strip tensile sample processingequipment of small external diameter steel pipe.

Disclosure of Invention

For solving the problem that exists among the above-mentioned technique, the utility model aims at providing a strip steel pipe tensile sample processingequipment of little external diameter, this kind of isolated plant makes appearance pipe from saw bit milling cutter left side horizontal migration to right side, accomplishes the operation of milling to appearance pipe, in the same time, can process two appearance pipes.

In order to achieve the above object, the utility model adopts the following technical scheme: a small-outer-diameter steel pipe strip-shaped tensile sample processing device comprises a milling machine and a movable workbench, wherein a flat plate is arranged on the movable workbench, a group of V-shaped supports for placing strip-shaped tensile small-outer-diameter steel pipes, a fixed positioning clamping jaw and an adjustable positioning device are arranged on the flat plate, and the fixed positioning clamping jaw and the adjustable positioning device are respectively arranged on two sides of the fixed V-shaped supports; a pair of saw blade milling cutters is arranged on a cutter bar of the milling machine and corresponds to the small-outer-diameter steel pipe on the V-shaped support, and a sizing gasket is arranged between the pair of saw blade milling cutters.

The pair of saw blade milling cutters are in multiple groups, and a positioning gasket is arranged between each group.

The adjustable positioning device comprises a pressing clamping jaw, a five-jaw bolt, a nut and a spanner, wherein the nut is fixed on the flat plate, the pressing clamping jaw is fixed on the nut through the five-jaw bolt, and the spanner is inserted into any jaw of the five-jaw bolt.

And a scrap iron baffle is arranged on the flat plate below the strip-shaped stretched small-outer-diameter steel pipe.

The dimensional tolerance and the shape tolerance of the tensile sample are both +/-0.05 mm.

The small outer diameter steel pipe is the diameter D₀≤70mm。

The utility model has the effects that the device can process two tensile samples alone or simultaneously, mills the operation about five minutes, and the dimensional tolerance and the shape tolerance of the tensile sample of completion are all within 0.05mm, accord with the requirement of tensile test to the sample completely. The device has high working efficiency and good processing precision, and is suitable for large-batch processing of the small-outer-diameter steel pipe strip tensile sample.

Drawings

FIG. 1 is a schematic structural view of a small-outer-diameter steel tube strip tensile sample processing device in a use state;

FIG. 2 is a schematic front view of FIG. 1;

FIG. 3 is a side view of FIG. 1;

FIG. 4 is a schematic sectional view A-A of FIG. 2;

fig. 5 is a top view of the inventive apparatus;

FIG. 6 is a schematic structural view of an adjustable positioning device;

fig. 7 is a front view of the adjustable positioning device.

In the figure:

1. cutter arbor 2, scale packing ring 3, saw bit milling cutter

4. Positioning washer 5, positioning claw 6 and V-shaped support

7. Pressing clamping jaw 8, five-jaw bolt 9 and nut

10. Flat plate 11, working table 12 and iron scrap baffle plate

13. Slideway 14, sample tube 15 and wrench

Detailed Description

The structure of the small-outer-diameter steel pipe strip tensile sample processing device of the utility model is further explained by combining the following drawings.

As shown in figures 1 to 5, the utility model discloses small external diameter steel pipe strip tensile sample processingequipment, including saw bit milling cutter part and appearance pipe fixed part constitution.

A saw blade milling cutter part: putting four saw blade milling cutters 3 on a cutter bar 1 of a horizontal milling machine, wherein every two saw blade milling cutters are in a group, a sizing gasket 2 is arranged in the middle of each group, and the four saw blade milling cutters are selected according to the width of a prepared strip-shaped tensile sample; and a positioning washer 4 is placed between the two groups of saw blade milling cutters 3, and the size of the positioning washer 4 corresponds to the distance between the two sample tubes 14, so that the two processed tensile samples are centered.

Sample tube fixing part: the positioning clamping jaw 5, the support 6, the pressing devices 7, 8, 9 and 15 and the scrap iron baffle 12 are fixed on the flat plate 10, the pressing devices are pushed and pulled back and forth through the slide ways 13, and then the flat plate 10 is fixed on the workbench 11 of the horizontal milling machine.

As shown in fig. 6 and 7, the adjustable positioning device comprises a pressing jaw 7, a five-jaw bolt 8, a nut 9 and a wrench 15, wherein the five-jaw bolt 8 is screwed into the nut 9, the nut 9 and the pressing jaw 7 are fixed on the same flat plate through bolts, the distance between the two is just enough to place the left side of the pressing jaw 7 right above the five-jaw bolt 8, and the wrench 15 is just inserted into any jaw of the five-jaw bolt 8.

The utility model discloses small outer diameter steel pipe strip tensile sample processingequipment's advantage:

1. the process is simple, the operation is convenient, the product is firm and durable, and the processing cost is low;

2. the processing efficiency is high, two samples can be processed simultaneously, and one strip-shaped tensile sample with the width of 10mm and the other strip-shaped tensile sample with the width of 15mm can be processed simultaneously;

3. the machining precision is high, and the dimensional tolerance and the shape tolerance of the sample can be guaranteed to be within +/-0.05 mm.

Claims (6)

1. The utility model provides a strip tensile sample processingequipment of small external diameter steel pipe, includes milling machine, mobile workbench, characterized by: a flat plate (10) is arranged on the movable workbench (11), a group of V-shaped supports (6) for placing the strip-shaped stretched steel pipes with small outer diameters, a fixed positioning jaw (5) and an adjustable positioning device are arranged on the flat plate (10), and the fixed positioning jaw (5) and the adjustable positioning device are respectively arranged on two sides of the fixed V-shaped supports (6); a pair of saw blade milling cutters (3) are arranged on a cutter bar (1) of the milling machine and correspond to the small-outer-diameter steel pipe on the V-shaped support (6), and a sizing gasket (2) is arranged between the pair of saw blade milling cutters (3).

2. The apparatus for processing the elongated tensile specimen of the small-outer-diameter steel pipe as set forth in claim 1, wherein: the pair of saw blade milling cutters (3) are in multiple groups, and a positioning gasket (4) is arranged between each group.

3. The apparatus for processing the elongated tensile specimen of the small-outer-diameter steel pipe as set forth in claim 1, wherein: the adjustable positioning device comprises a pressing clamping jaw (7), a five-jaw bolt (8), a nut (9) and a wrench (15), wherein the nut (9) is fixed on a flat plate (10), the pressing clamping jaw (7) is fixed on the nut (9) through the five-jaw bolt (8), and the wrench (15) is inserted into any jaw of the five-jaw bolt (8).

4. The apparatus for processing the elongated tensile specimen of the small-outer-diameter steel pipe as set forth in claim 1, wherein: and a scrap iron baffle (12) is arranged on the flat plate (10) below the strip-shaped stretched small-outer-diameter steel pipe.

5. The small outer diameter steel pipe strip tensile specimen processing device according to claim 4, characterized in that: the dimensional tolerance and the shape tolerance of the tensile sample are both +/-0.05 mm.

6. The apparatus for processing the elongated tensile specimen of the small-outer-diameter steel pipe as set forth in claim 1, wherein: the small outer diameter steel pipe is the diameter D₀≤70mm。

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