CN202367240U - Cambered surface drilling device of tubular tensile test piece - Google Patents
Cambered surface drilling device of tubular tensile test piece Download PDFInfo
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- CN202367240U CN202367240U CN2011205407590U CN201120540759U CN202367240U CN 202367240 U CN202367240 U CN 202367240U CN 2011205407590 U CN2011205407590 U CN 2011205407590U CN 201120540759 U CN201120540759 U CN 201120540759U CN 202367240 U CN202367240 U CN 202367240U
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- cambered surface
- tubulose
- arc
- tensile sample
- surface drilling
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Abstract
The utility model relates to a cambered surface drilling device of a tubular tensile test piece, which comprises an upper mould and a lower mould, an arc-shaped tubular groove is arranged in the upper mould, an arc-shaped tubular protrusion is arranged on the lower mould, an annular gap forms between the arc-shaped groove and the arc-shaped protrusion, and a guide hole and a fixing hole are arranged in the upper mould. According to the cambered surface drilling device of the tubular tensile test piece, simple mechanical and fastening devices are adopted, a mould device is used for solving the problem of cambered surface drilling of a minor-caliber arc-tubular section, therefore coaxality and precision of holes at two ends of a high-temperature tensile test piece of a heat exchange tube are controlled, and accuracy of tensile test results is guaranteed.
Description
Technical field
The utility model relates to the boring device of a kind of minor diameter heat exchanger tube cambered surface, is specifically related to tubulose tensile sample cambered surface drilling equipment.
Background technology
Tension test is one of the most common test method in the material mechanical performance test.Each stage such as the strain in the test, plastic deformation, fracture has truly been reflected the overall process of material opposing external force effect.It has characteristics such as simple, that specimen preparation is convenient.The resulting strength of materials of tension test and plastic property data all have very important use value and reference value for design and selection, the development of new material, buying and examination, the quality control of product and the safety and the assessment of equipment of material.
Test material for carrying out tension test need be made into tensile sample.For metal material, generally need to use the tubulose tensile sample to test.
The pyrotron cold dome is as a kind of advanced technology at present, and security performance is good, can be used for the nuclear reactor of efficient power generation and high-temperature heat supply, is one of first-selection heap type of world today's the 4th generation of technology such as nuclear energy system.By the pyrotron cold dome steam generator manufacturing of China's autonomous Design as the great special subject study of country tensely and in an orderly way carrying out.Wherein critical process minor diameter thin wall heat exchanger tube butt welding technology has become the research object of various countries' welding expert.
Under study for action, the high-temperature behavior of the heat exchanger tube butt welding of minor diameter same material and foreign material technology becomes one of important indicator of its weldquality of examination.According to the form of testing machine, select the segmental arc that has pin-and-hole bare terminal end for use as high temperature tension test.
Yet also there are a lot of deficiencies in conventional heat exchanger tube butt joint experimental study, specifically lists as follows:
(1) because nickel-base alloy itself is more sticking, in connecing the weldering process, easy and mould generation viscous influences the tension test accuracy;
(2) heat exchanger tube is not firm when boring, is prone to skid, and the borehole accuracy and the position utmost point cannot say for sure to demonstrate,prove on cambered surface;
(3) the heat exchanger tube diameter is little, and the boring difficulty is big, and the dimensional accuracy of end cambered surface pin-and-hole and behavior tolerance directly influence the stretch test result of sample.
In order to carry out tension test smoothly, accurately measure the mechanical property of waiting to try the minor diameter heat exchanger tube, need produce the tubulose tensile sample simply and easily, particularly on the tubulose tensile sample, bore mouthful and sample is not impacted.
The utility model content
In view of above-mentioned present situation; The inventor studies; Discovery can be adopted simple machinery and fastener, utilizes the form of die device to solve the difficult problem of the brill mouth of small-bore arc pipeline section cambered surface, so that control the problem of the coaxial and precision of boring at heat exchanger tube drawing by high temperature sample two ends own; Guarantee the accuracy of stretch test result, thereby accomplish the utility model.
The utility model provides following aspect.
(1) a kind of tubulose tensile sample cambered surface drilling equipment is characterized in that,
Said tubulose tensile sample cambered surface drilling equipment comprises mold and bed die, has straight tube arc-shaped groove in the mold, and bed die is provided with the circular-arc convexity of straight tube, forms annular gap between arc-shaped groove and the circular-arc convexity,
Wherein, in mold, offer pilot hole, in mold, also offer fixing hole.
(2) as above the tubulose tensile sample cambered surface drilling equipment described in (1) is characterized in that, in mold, offers pilot hole, in bed die, has the assembling screwed hole with pilot hole relative position place.
(3) as above the tubulose tensile sample cambered surface drilling equipment described in (1) is characterized in that the corner location place respectively offers a pilot hole in mold, at the Si Jiaochu of bed die, respectively establishes an assembling screwed hole in the position relative with pilot hole.
(4) as above the tubulose tensile sample cambered surface drilling equipment described in (1) or (2) is characterized in that, the straight tube arc-shaped groove in the mold cooperates with the external diameter of tubulose tensile sample, and the circular-arc convexity of straight tube in the bed die cooperates with the internal diameter of tubulose tensile sample.
(5) as above the tubulose tensile sample cambered surface drilling equipment described in (1) is characterized in that, in the fixing hole of mold, is rotary with hold-down screw.
(6) as above the tubulose tensile sample cambered surface drilling equipment described in (5) is characterized in that the bottom tip of said hold-down screw is the sphere arc.
(7) as above the tubulose tensile sample cambered surface drilling equipment described in (1) is characterized in that, in mold, along the straight tube direction of straight tube arc-shaped groove, the place offers fixing hole at the circular arc peak.
(8) as above the tubulose tensile sample cambered surface drilling equipment described in (1) is characterized in that bed die is installed on the pedestal.
The tubulose tensile sample cambered surface drilling equipment that the utility model provides has the following advantages:
(1) adopt mould to cooperate; The tubulose tensile sample is fixed in the annular gap that mould forms up and down; The circumferential position requirement of pin-and-hole is guaranteed in slip when having reduced the boring of heat exchanger tube cambered surface tensile sample, around the boring position of boring back heat exchanger tube cambered surface tensile sample deformation takes place hardly;
(2) utilize fixing hole and fixed screw, and utilize the assembling screw, the further fixing heat exchanger tube cambered surface tensile sample that will hole, the slip when further reducing the boring of heat exchanger tube cambered surface tensile sample;
(3) drill bit is holed through pilot hole exchange heat pipe cambered surface tensile sample; Guaranteed the circumferential size requirement of boring; Deformation circumferentially takes place in boring hardly; Clamping quality when having kept the drawing by high temperature sample has effectively effectively been avoided because bare terminal end is processed the adverse effect of bringing to the high temperature tension test precision of the heat exchanger tube tension test of minor diameter thin wall;
(4) the tubulose tensile sample cambered surface drilling equipment of the utility model is easy to manufacture, with low cost, for the research of guaranteeing HTGR demonstration reactor steam generator grade in an imperial examination four generations nuclear power generating equipment critical process-heat exchanger tube butt joint operation provides powerful guarantee.
Description of drawings
Fig. 1 shows the cross-sectional view according to the tubulose tensile sample cambered surface drilling equipment of the utility model preferred implementation.
Fig. 2 shows the side-looking structural representation according to the tubulose tensile sample cambered surface drilling equipment of the utility model preferred implementation.
Fig. 3 shows the structural representation according to the mold of the tubulose tensile sample cambered surface drilling equipment of the utility model preferred implementation.
Fig. 4 shows the structural representation according to the bed die of the tubulose tensile sample cambered surface drilling equipment of the utility model preferred implementation.
Description of reference numerals:
The 1-mold
The 2-bed die
The 3-hold-down screw
4-rigging screw
The 5-pilot hole
The 6-fixing hole
The 7-pilot hole
The 8-arc-shaped groove
The circular-arc convexity of 9-
The 10-annular gap
11-assembles screwed hole.
The specific embodiment
The utility model is elaborated through the specific embodiment below in conjunction with accompanying drawing.Characteristics of the utility model and advantage will become more clear, clear and definite along with these descriptions.
In preferred embodiment, as shown in Figure 1, a kind of tubulose tensile sample cambered surface drilling equipment is provided; It comprises mold 1 and bed die 2, has straight tube arc-shaped groove 8 in the mold 1, and bed die is provided with straight tube circular-arc protruding 9; Form annular gap 10 between the arc-shaped groove 8 and circular-arc protruding 9; Wherein, in mold 1, offer pilot hole 5, in mold, also offer fixing hole 6.
Wherein, pilot hole 5 is a through hole, is used for starter, and rotary head can get out desirable hole on the cambered surface of tubulose tensile sample after pilot hole 5 guiding.According to the size of required boring, can regulate the size of pilot hole.
As adopt drill bit directly on cambered surface, to hole; Because there is the apex point offset distance in the drill bit rotation, when contacting with cambered surface, very easily skids, and is difficult to the keyhole quality; Through pilot hole drill bit is holed to be changed into through pilot hole by direct location on cambered surface and locate; Because pilot hole is opened in the mold, has higher positional precision, thereby improve the cambered surface drilling quality.
Straight tube arc-shaped groove 8 in the mold 1 cooperates with the external diameter of tubulose tensile sample; Groove part exchange heat pipe tensile sample has downward supporting role, the axial deformation of avoiding light-wall pipe when boring, to bring, and the straight tube circular-arc protruding 9 in the bed die 2 cooperates with the internal diameter of tubulose tensile sample; Bossing exchange heat pipe tensile sample has upwards supporting role; The axial deformation of avoiding light-wall pipe when boring, to bring, annular gap 10 cooperates with the tubulose tensile sample, and the tubulose tensile sample cooperates and can in annular gap 10, slide along straight tube direction; Like this after sample is bored a hole, can move sample and in other positions boring.
Because small slip when heat exchanger tube cambered surface tensile sample is holed, possibly take place in the fit-up gap between that the inside and outside footpath of heat exchanger tube self tolerance range is come and mold 1, the bed die 2; Influence the machining accuracy in hole, for fear of this small slip, in further preferred embodiment; In mold 1, offer fixing hole 6, wherein equip hold-down screw 3, further; In mold, offer pilot hole 7; And offer assembling screwed hole 11 in the corresponding position of bed die, wherein equip rigging screw 4, thereby heat exchanger tube cambered surface tensile sample is fastened in the annular gap 10 that arc-shaped groove 8 and circular-arc protruding 9 forms.
In further preferred embodiment, the corner location place respectively offers a pilot hole in mold, at the Si Jiaochu of bed die, respectively establishes an assembling screwed hole in the position relative with pilot hole.Through four rigging screws fastening assembling of mould up and down.
In further preferred embodiment, in mold, along the straight tube direction of straight tube arc-shaped groove 8; At the circular arc peak; Be that center of arc offers fixing hole 5 everywhere, hold-down screw and tubulose tensile sample contact position are balanced like this, and be minimum to the influence of tubulose tensile sample.
In further preferred embodiment, the bottom tip of hold-down screw 3 is the sphere arc, and the contact between the contacting of hold-down screw and tubulose tensile sample is the some contact like this, and hold-down screw is for the rigid minimum of tubulose tensile sample.
In further preferred embodiment; Bed die is installed on the pedestal; Base shape can be adjusted according to actual needs, for example is inverted U, and such pedestal can slide on the inverted U production line; Then tubulose tensile sample cambered surface drilling equipment can slide on production line through pedestal, is convenient to use.
More than through the preferred specific embodiment the utility model has been carried out exemplary explanation.What but need statement is; These specific embodiment only are the illustrative explanations to the utility model; The protection domain to the utility model does not constitute any restriction; Under the situation that does not exceed the utility model spirit and protection domain, those skilled in the art can carry out various improvement, replacement of equal value or modification to the utility model technology contents and embodiment thereof, and these all fall in the protection domain of the utility model.The protection domain of the utility model is as the criterion with accompanying claims.
Claims (8)
1. a tubulose tensile sample cambered surface drilling equipment is characterized in that,
Said tubulose tensile sample cambered surface drilling equipment comprises mold and bed die, has straight tube arc-shaped groove in the mold, and bed die is provided with the circular-arc convexity of straight tube, forms annular gap between arc-shaped groove and the circular-arc convexity,
Wherein, in mold, offer pilot hole, in mold, also offer fixing hole.
2. tubulose tensile sample cambered surface drilling equipment according to claim 1 is characterized in that, in mold, offers pilot hole, in bed die, has the assembling screwed hole with pilot hole relative position place.
3. tubulose tensile sample cambered surface drilling equipment according to claim 1 is characterized in that the corner location place respectively offers a pilot hole in mold, at the Si Jiaochu of bed die, respectively establishes an assembling screwed hole in the position relative with pilot hole.
4. tubulose tensile sample cambered surface drilling equipment according to claim 1 and 2 is characterized in that, the straight tube arc-shaped groove in the mold cooperates with the external diameter of tubulose tensile sample, and the circular-arc convexity of straight tube in the bed die cooperates with the internal diameter of tubulose tensile sample.
5. tubulose tensile sample cambered surface drilling equipment according to claim 1 is characterized in that, in the fixing hole of mold, is rotary with hold-down screw.
6. tubulose tensile sample cambered surface drilling equipment according to claim 5 is characterized in that the bottom tip of said hold-down screw is the sphere arc.
7. tubulose tensile sample cambered surface drilling equipment according to claim 1 is characterized in that, in mold, along the straight tube direction of straight tube arc-shaped groove, the place offers fixing hole at the circular arc peak.
8. tubulose tensile sample cambered surface drilling equipment according to claim 1 is characterized in that bed die is installed on the pedestal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205407590U CN202367240U (en) | 2011-12-21 | 2011-12-21 | Cambered surface drilling device of tubular tensile test piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205407590U CN202367240U (en) | 2011-12-21 | 2011-12-21 | Cambered surface drilling device of tubular tensile test piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202367240U true CN202367240U (en) | 2012-08-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205407590U Expired - Lifetime CN202367240U (en) | 2011-12-21 | 2011-12-21 | Cambered surface drilling device of tubular tensile test piece |
Country Status (1)
| Country | Link |
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| CN (1) | CN202367240U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103100901A (en) * | 2012-11-15 | 2013-05-15 | 无锡市航鹄科技有限公司 | Thin-wall cambered-surface positioning tool for inclined hole punching |
| CN103100895A (en) * | 2012-11-12 | 2013-05-15 | 无锡市航鹄科技有限公司 | Soft clamp milling tool |
| CN103100870A (en) * | 2012-11-12 | 2013-05-15 | 无锡市航鹄科技有限公司 | Soft clamp drilling machining locating device |
| CN104263887A (en) * | 2014-09-24 | 2015-01-07 | 机械科学研究总院先进制造技术研究中心 | Tapping saw quenching tooling |
| CN104708061A (en) * | 2013-12-12 | 2015-06-17 | 铜陵市永生机电制造有限责任公司 | Drilling fixture |
| CN105710674A (en) * | 2016-04-11 | 2016-06-29 | 哈尔滨建成集团有限公司 | Special clamp used for drilling of arc-shaped workpiece |
-
2011
- 2011-12-21 CN CN2011205407590U patent/CN202367240U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103100895A (en) * | 2012-11-12 | 2013-05-15 | 无锡市航鹄科技有限公司 | Soft clamp milling tool |
| CN103100870A (en) * | 2012-11-12 | 2013-05-15 | 无锡市航鹄科技有限公司 | Soft clamp drilling machining locating device |
| CN103100901A (en) * | 2012-11-15 | 2013-05-15 | 无锡市航鹄科技有限公司 | Thin-wall cambered-surface positioning tool for inclined hole punching |
| CN104708061A (en) * | 2013-12-12 | 2015-06-17 | 铜陵市永生机电制造有限责任公司 | Drilling fixture |
| CN104263887A (en) * | 2014-09-24 | 2015-01-07 | 机械科学研究总院先进制造技术研究中心 | Tapping saw quenching tooling |
| CN105710674A (en) * | 2016-04-11 | 2016-06-29 | 哈尔滨建成集团有限公司 | Special clamp used for drilling of arc-shaped workpiece |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120808 |