CN200972435Y - Mould for preparing specimen by milling machine - Google Patents
Mould for preparing specimen by milling machine Download PDFInfo
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- CN200972435Y CN200972435Y CN 200620139769 CN200620139769U CN200972435Y CN 200972435 Y CN200972435 Y CN 200972435Y CN 200620139769 CN200620139769 CN 200620139769 CN 200620139769 U CN200620139769 U CN 200620139769U CN 200972435 Y CN200972435 Y CN 200972435Y
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- pressing plate
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Abstract
The utility model relates to a mould which makes samples by milling machine. The mould has a mould floor and is characterized in that a mould body is fixed on mould floor; the mound body is provided with a fixed groove which is convenient to embed sample and mill the whole work hardening area in edge by milling cutter; on the top of fixed groove, a sample pressure plate is positioned which is connected to the bottom of bolt return, while the upper part of bolt return passes through the via hole in mould body, and the top of bolt return and the upper part of mould body are supported by springs return; a hold-down bolt passes through a thread hole in mould body and tightly against the top of pressure plate. The utility model can effectively eliminate abnormal breakage and insure the continuity of tensile test, and avoids fracture, improves work efficiency, also structure is simple and convenient to use.
Description
Technical field
The utility model relates to a kind of mould of making sample by milling machine.
Background technology
1. the definition of tension test: tension test is meant with quiet pulling force carries out axial tension to standard sample, and power of continuous coverage simultaneously and corresponding elongation until fracture, and then according to the data that record, are obtained relevant mechanical property.
2. the classification of tension test and profile: at present a lot of companies finished product specimen configuration and size that the tension test of material is all adopted of dispatching from the factory, as shown in Figure 1.Its shape is to obtain through machine work, is connected by zone of transition between parallel portion and the clamping part, and the sample nose shape is suitable for the clamping of puller system chuck.
3. the problem of Cun Zaiing: the sample preparation means of sample adopt following dual mode substantially: 1). and steel plate is cut into the strip sample of 260mm * 30mm specification with plate shearing machine, be processed into shape with milling machine again as Fig. 1; 2). sweep away the strip sample of 260mm * 30mm specification with punch press, be processed into shape with milling machine again as Fig. 1.Mainly adopt first kind of mode to process before, begin to be replaced by punch press processing at the beginning of 06.But which kind of mode no matter, tension test plays pendulum all the time, probability when mainly showing as mode one plate shearing machine and shearing be fixed with the quality of cutting edge (new blade to be drawn into power high, and during the blade chipping, with regard to easily broken in clamping part), so in like manner, as the punching out operation of mode two, also be to decide with the quality of blurting out based on punch press.Though above-mentioned cutting edge of talking about and the probability that breaks at clamping part under best state of blurting out are less, but can take place.Because of the work hardening that under any shearing and punching press condition, all can produce limit portion, cause stress to concentrate and cause tensile sample not reach deformation limit phenomenon of rupture (seeing Fig. 3 for details) just outside gauge length, occurring, and Fig. 2 is seen in normal fracture, the success ratio of test is reduced greatly, general expenses such as consumables rise, and the problem of generation mainly contains the following aspects:
1. the phenomenon of doing over again: the operative employee needs sample preparation again, test.
2. increase consumptive material: the loss of plate shearing machine blade, the punching machine mold edge of a knife, CNC milling machine milling cutter.
3. energy resource consumption: increase the consumption of electricity, water, gas, the wet goods energy.
The utility model content
Technical problem to be solved in the utility model provides a kind of mould by milling machine making sample, and it can eliminate unusual fracture effectively, guarantees the continuity of tension test, avoids fracture, increases work efficiency, and is simple and practical, easy to use.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of mould of making sample by milling machine, it includes die bottom plate, it is characterized in that being fixed with die main body on the described die bottom plate, have in the die main body pickup groove that milling cutter mills away portion work hardening district, whole limit is convenient in the sample embedding, the position is provided with sample pressing plate above in pickup groove, the lower end of sample pressing plate and return bolt links together, the through hole on the die main body is passed on return bolt top, and be supported with retracing spring above return bolt head and the die main body, other has hold-down bolt to pass threaded hole above the die main body, presses closer on the style pressing plate.
As improvement, described return bolt has two, is the position, the left and right sides that center line distributes symmetrically and is arranged on the style pressing plate.Make style stressed balanced more, more stable work is reliable.
As improvement, described hold-down bolt has two, is the position, the left and right sides that center line distributes symmetrically and is arranged on the style pressing plate.Make style stressed balanced more, more stable work is reliable.
At last, described die main body is fixedly connected with plate washer in the another side of pickup groove.
Compared with prior art, advantage of the present utility model is: it can eliminate unusual fracture effectively, guarantees the continuity of tension test, avoids fracture, increases work efficiency, and is simple and practical, easy to use.
Description of drawings
Fig. 1 is the sample synoptic diagram;
Fig. 2 is a sample normal rupture synoptic diagram;
Fig. 3 is the sample synoptic diagram that ruptures unusually;
Fig. 4 is the original mould synoptic diagram of milling machine;
Fig. 5 is a milling machine new die synoptic diagram;
Fig. 6 a is a milling machine new die structure cut-open view;
Fig. 6 b is a milling machine new die structure cut-open view.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Meaning by summary and the on-the-spot tracing observation to tension test in the past, finds that the success ratio of test is relevant with the processing of sample as shown in the figure.When shearing with plate shearing machine, it is higher that the sample that new blade is sheared out is drawn into power, and after blade had wearing and tearing slightly, unusual fracture appearred in sample easily that shear.In like manner, the punch press quality of blurting out also affects the success or not of test.Find that by a large amount of observations all there is burr in the limit portion of the sample that ruptures unusually, and fracture just produces at the burr place.So, it is quite obvious that the reason of test failure becomes: through the sample of shearing or punching press makes, strong work hardening (macro manifestations is a burr) has taken place in its edge, after milling machine processing, the work hardening district of parallel portion is by mill off and still there is work hardening in the retaining part at two, when sample is subjected to time spent of doing of axial tension stress, the work hardening district is that the burr position stress occurs and concentrates, and ruptures at first.
In sum, guarantee the success of tension test, as long as eliminate the work hardening zone at sample edge.Have only milling machine to possess this function in the existing equipment, and sample preparation operation itself just need be processed, so how to improve the emphasis that the milling process of milling machine is this invention, can not produce any influence to actual production or workflow when doing like this by milling machine.
This innovation work mainly comprises regrouping the improvement of milling machine mould and milling machine feed program.
Fig. 4 is the vertical view of milling machine original mould.From figure, can be clear that, because the restriction of die size, the range of movement of milling cutter is confined to the zone about 50mm beyond parallel portion length and the parallel portion length, both sides respectively have the retaining part of about 100mm can't carry out milling in mould at all, the existence in work hardening district makes this position often become the zone of rupturing at first in the tension test, cause test failure, milling cutter is exactly the circle of illustrating among the figure.
Fig. 5 is the new die work synoptic diagram after improving.Mould one side opening, sample adopts embedded putting into, and sample one side is close to mould, and opposite side is exposed fully.Like this, milling cutter can mill away the work hardening district of whole limit portion like a cork.Milling just can obtain desirable sample at twice.Milling cutter is exactly the circle of illustrating among the figure.
CNC milling machine is by its operation of programming Control, and writing again of the change inevitable requirement program of mould by repeatedly practising, successfully write out the feed program of the suitable new die of a cover finally.
Fig. 6 is the design drawing of new die, and integral installation wherein 1 is expressed as original mould on original mould; 2 are expressed as the die bottom plate of new die; 3 are expressed as the die main body of new die; 4 are expressed as sample pressing plate; 5 are expressed as pressing plate return bolt; 6 are expressed as hold-down bolt; 7 are expressed as the plate washer behind the new die; 8 are expressed as coupling bolt (being used to connect original mould and new die), pickup groove 9.
This kind made the mould of sample by milling machine, it includes die bottom plate 2, on die bottom plate 2, be fixedly connected with die main body 3, have in the die main body 3 pickup groove 9 that milling cutter mills away portion work hardening district, whole limit is convenient in the sample embedding, the position is provided with sample pressing plate 4 above in pickup groove 9, sample pressing plate 4 links together with the lower end of return bolt 5, the through hole on the die main body 3 is passed on return bolt 5 tops, and be supported with retracing spring above return bolt 5 heads and the die main body 3, return bolt 5 has two, be the position, the left and right sides that center line distributes symmetrically and is arranged on style pressing plate 4, other has hold-down bolt 6 to pass threaded hole above the die main body 3, press closer on style pressing plate 4, hold-down bolt 6 also has two, be the position, the left and right sides that center line distributes symmetrically and is arranged on style pressing plate 4, die main body 3 is fixedly connected with plate washer 7 in the another side of pickup groove 9.Coupling bolt 8 is used to connect original mould 1 and new die.In the time of use, the blank of sample just is being embedded in the pickup groove 9 of mould, by tightening hold-down bolt 6, make sample pressing plate 4 overcome the elasticity of retracing spring and descend, push down sample pressing plate 4, thereby clamp the sample blank, mill away portion work hardening district, locational whole limit with milling machine then, be made into sample in both sides.When taking out sample,, sample pressing plate 4 is resetted under the effect of retracing spring, make sample pressing plate 4 break away from sample, can take out sample, repeat another side of processing sample as long as unclamp hold-down bolt 6.
After actual effect, milling machine were debugged successfully, the thickness of selecting the unusual fracture of the easiest generation originally was that the sample of 0.3mm, 0.4mm, 3 kinds of different surfaces of 0.5mm carries out tension test for each 5 groups, and success of the test rate 100% has reached initial design object fully.After transformation is finished, carried out the trial run of about half a year, respond well, each side is all ripe, has stopped substantially because of the sample preparation problem causes material unusual phenomenon of rupture to take place, and has obviously improved tension test operating personnel's operating efficiency.Both guaranteed the success ratio of test, improved work efficiency, again virtually for company has reduced cost, embodied comprehensive benefit.Be suitable for the especially preparation of laboratory tensile sample in the stainless steel industry of steel industry.
Claims (4)
1. mould of making sample by milling machine, it includes die bottom plate, it is characterized in that being fixed with die main body on the described die bottom plate, have in the die main body pickup groove that milling cutter mills away portion work hardening district, whole limit is convenient in the sample embedding, the position is provided with sample pressing plate above in pickup groove, the lower end of sample pressing plate and return bolt links together, the through hole on the die main body is passed on return bolt top, and be supported with retracing spring above return bolt head and the die main body, other has hold-down bolt to pass threaded hole above the die main body, presses closer on the style pressing plate.
2. mould according to claim 1 is characterized in that described return bolt has two, is the position, the left and right sides that center line distributes symmetrically and is arranged on the style pressing plate.
3. mould according to claim 1 and 2 is characterized in that described hold-down bolt has two, is the position, the left and right sides that center line distributes symmetrically and is arranged on the style pressing plate.
4. mould according to claim 3 is characterized in that described die main body is fixedly connected with plate washer in the another side of pickup groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620139769 CN200972435Y (en) | 2006-11-08 | 2006-11-08 | Mould for preparing specimen by milling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620139769 CN200972435Y (en) | 2006-11-08 | 2006-11-08 | Mould for preparing specimen by milling machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200972435Y true CN200972435Y (en) | 2007-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620139769 Expired - Lifetime CN200972435Y (en) | 2006-11-08 | 2006-11-08 | Mould for preparing specimen by milling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200972435Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101691016B (en) * | 2009-09-23 | 2011-06-22 | 吴江市双精轴承有限公司 | Milling die for processing location hole of back fixing ball ring |
| CN102225512A (en) * | 2011-06-08 | 2011-10-26 | 上海电气核电设备有限公司 | Tensile test piece processing tool jig |
| CN102426120A (en) * | 2011-08-30 | 2012-04-25 | 上海华碧检测技术有限公司 | Manufacturing method of material tensile sample |
| CN104568576A (en) * | 2013-10-10 | 2015-04-29 | 贵州大学 | Clamping method for mechanical performance experiment of metal material |
| CN107263152A (en) * | 2017-07-05 | 2017-10-20 | 广东长盈精密技术有限公司 | Cutting removes the fixing device and cutting equipment of the electrode on mould |
-
2006
- 2006-11-08 CN CN 200620139769 patent/CN200972435Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101691016B (en) * | 2009-09-23 | 2011-06-22 | 吴江市双精轴承有限公司 | Milling die for processing location hole of back fixing ball ring |
| CN102225512A (en) * | 2011-06-08 | 2011-10-26 | 上海电气核电设备有限公司 | Tensile test piece processing tool jig |
| CN102225512B (en) * | 2011-06-08 | 2013-01-09 | 上海电气核电设备有限公司 | Tensile test piece processing tool jig |
| CN102426120A (en) * | 2011-08-30 | 2012-04-25 | 上海华碧检测技术有限公司 | Manufacturing method of material tensile sample |
| CN104568576A (en) * | 2013-10-10 | 2015-04-29 | 贵州大学 | Clamping method for mechanical performance experiment of metal material |
| CN107263152A (en) * | 2017-07-05 | 2017-10-20 | 广东长盈精密技术有限公司 | Cutting removes the fixing device and cutting equipment of the electrode on mould |
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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 |
Granted publication date: 20071107 |
|
| EXPY | Termination of patent right or utility model |