CN201047817Y - Tooth block of tensile specimen - Google Patents
Tooth block of tensile specimen Download PDFInfo
- Publication number
- CN201047817Y CN201047817Y CNU2007200687917U CN200720068791U CN201047817Y CN 201047817 Y CN201047817 Y CN 201047817Y CN U2007200687917 U CNU2007200687917 U CN U2007200687917U CN 200720068791 U CN200720068791 U CN 200720068791U CN 201047817 Y CN201047817 Y CN 201047817Y
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- China
- Prior art keywords
- tooth piece
- tooth
- sample
- tensile sample
- protruding pin
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Abstract
The utility model discloses a tensile sample gear block comprising two pairs of gear blocks. The surface of the gear block is provided with a plurality of convexes; in each pair of gear blocks, a gear block is provided with at least a groove, and another gear block is provided with at least a suited convex pin. The utility model has simple structure, being convenient for the centering of the sample; avoiding the slips as a result of little contact force, and reducing the production cost of the tensile sample.
Description
Technical field
The utility model relates to a kind of clamp device of tensile sample, relates in particular to a kind of clamping tooth piece of tensile sample.
Background technology
Tension test refers to provide axial load to the sample of clamping between moved cross beam and fixed cross beam, and the technology of The real time measure load and sample marking distance deformation relationship, belongs to one of basic means of estimating metal material mechanical property quality.Therefore, guarantee that axial alignment and the load of sample in process of the test is the key of implementing tension test to effective transmission of sample loading portion.Along with development dynamo-electric, control technology, cupping machine programme-controlled, automaticity is more and more high, yet the sample holder system thereby rarely has the change of essence because principle is comparatively simple.Adopting pneumatic or hydraulic pressure still is the mainstream configuration of present cupping machine grasping system as the conuli face tooth piece of driving medium, wedge shape or horizontal sliding anchor clamps method of clamping.Wherein at dumbbell shaped rectangular thin plate tensile sample, the flat push type air-actuated jaw does not produce initial reverse power to sample, and has with low costly, and the low advantage of environmental impact is widely adopted.
Along with the variation of metallurgic product research and development, AHSS plate (as dual phase steel, stainless steel etc.) and coating product thereof, and pickled plate after the hot rolling have all obtained in automobile, household appliances cold machine-shaping field using widely.The rolling specs of these products is in the 0.6-3mm scope substantially, thereby need prepare its dumbbell shaped rectangle tensile sample according to the GB/T228 national standard and carry out tension test, and as shown in Figure 1,1 ' is shoulder, and 2 ' is loading portion, and 3 ' is clamping part.Because these product strength height, specimen surface or hard and smooth or have a situation such as oxide skin, therefore the situation that adopts the flat push type anchor clamps to skid and to load through be everlasting the loading initial stage generation flank of tooth and sample, even proceed in test and to skid when stretch section end sample is about to plastic deformation, cause sample to scrap, greatly influence the efficient of test, reduced the accuracy of index test.
For improving the duty between the flat push type anchor clamps flank of tooth and sample, especially increase clamping stiction, can use patent of invention 200510089800.6 disclosed a kind of " Embosser ".Be about to sample two clamping parts and be loaded in " Embosser " up and down between each dandy roll and backing roll of one, the mode by mechanical presses forms embossing, the contact force of the flank of tooth and sample when having strengthened tension test on the clamping part surface.Yet adopt this mode to need tension test is divided into sample embossing and two stages of sample clamping, influenced the cycle of bulge test.What is more important, the embossing effect is remarkable with sample material and thickness influence of specification, the embossing condition of the clean sample of soft light obviously is not suitable for partially firmly and exists the sample of oxide skin partially, therefore adopt the mode of embossing just to improve the duty of flat push type tooth piece, can not fundamentally avoid the skidding that causes because of the friction force deficiency.
In addition, patent of invention 200310113373.1 disclosed " a kind of stretching clamp that is used for the nonmetallic materials stretching mechanical property testing " has avoided the flank of tooth to contact with the direct of sample, but with the placing together with clamping part in the recessed embedding formula integral installation clip slot of anchor clamps of sample shown in Figure 1 from shoulder, by the sample shoulder directly stressed mode transmit tensile load.This installation way is had relatively high expectations to sample processing, needs to guarantee the axial symmetry and the smooth finish of shoulder transition arcs of sample, and deviation or concentrated and disrumpent feelings because of shoulder stress during with the sample loading avoiding causing because of the symmetry difference has strengthened the cost of manufacture of tensile sample.
Summary of the invention
The purpose of this utility model provides a kind of tooth piece of tensile sample, and this tooth piece can be avoided because sample centering is convenient in the skidding that contact force causes for a short time, reduces the cost of manufacture of tensile sample.
The purpose of this utility model is achieved in that
A kind of tooth piece of tensile sample comprises two pairs of tooth pieces, and tooth piece surface is provided with some projectioies; In every pair of tooth piece, a tooth piece has a groove at least, and another tooth piece is provided with a protruding pin that is complementary with it at least.
Preferably, described groove is a circular hole, and protruding pin is cylindric.
Preferably, the quantity of described groove and protruding pin is two pairs, and vertical array is on the tooth piece.
Preferably, described protruding pin is fixed on the flank of tooth by being threaded.
Preferably, described protruding pin is fixed in the installation slotted eye of flank of tooth reservation by cooperation.
Preferably, the projection on described tooth piece surface is a tapered protrusion.
The utility model is owing to adopted above-mentioned technical scheme, make it compared with prior art, have following advantage and good effect: avoided the skidding that causes because of the friction force deficiency, to the interlock of tensile sample and draw the fixing mode of pin, improved the accuracy of test by the tooth piece.
Description of drawings
Fig. 1 is the synoptic diagram of tensile sample;
Fig. 2 is a clamping tooth piece front view of the present utility model;
Fig. 3 is that the A of Fig. 2 is to view;
Fig. 4 is that the B of Fig. 2 is to view;
Fig. 5 is for being applied to tensile sample synoptic diagram of the present utility model;
Fig. 6 is an assembling synoptic diagram of the present utility model;
Fig. 7 is the assembling synoptic diagram of the utility model tooth piece and tensile sample.
Embodiment
As Fig. 2, shown in 3,4, this device is made of two pairs of supporting tooth pieces 1 and tooth piece 2.Tooth piece 1 has the little tooth of fine and closely woven taper with the surface distributed of tooth piece 2, is tapered protrusion face 5.In concrete enforcement, can adopt some projectioies of arbitrary shape to the surface at the tooth piece, as long as can produce enough big stiction.Wherein have a circular hole groove 3 in tooth piece 1 flank of tooth central authorities, in tooth piece 2 flank of tooth central authorities a cylindric protruding pin 4 that is complementary is with it arranged, protruding pin 4 can be fixed on by the mode that is threaded on the flank of tooth, also can be fastened on by the mode that hot charging is joined in the installation hole slot of flank of tooth reservation.The physical dimension close fit of groove and protruding pin makes tooth piece 1 contact fully with tooth piece 2 flank of tooth.Also can leave a pair of vertical setting of types circular hole groove on tooth piece 1 flank of tooth, the cylindric protruding pin of a pair of vertical setting of types that is complementary is with it arranged on tooth piece 2 flank of tooth, fixing this kind mode that adopts of pin is more efficient as drawing.
With the supporting dumbbell shaped rectangle tensile sample 6 of above-mentioned tooth piece shown in Fig. 1,5, sample holder portion 3 ' two ends respectively have a pin-and-hole 7, tooth piece 2 cylindric protruding pins 4 pass sample pin-and-hole 7 and enter tooth piece 1 circular hole groove 3 (see figure 2)s, three's close fit during clamping.Also can respectively leave a pair of vertical setting of types pin-and-hole, cooperate, form and draw pin to fix more efficiently with a pair of vertical setting of types groove on the tooth piece 1 and a pair of vertical setting of types protruding pin on the tooth piece 2 at sample holder portion 3 ' two ends.
By above-mentioned tooth piece and sample design, possessed tooth piece interlock sample simultaneously and drawn pin to fix two kinds of patterns.When tensile sample 6 surface state were suitable, tooth piece 1 and tooth piece 2 were by the little tooth of fine and closely woven taper of surface distributed, and promptly tapered protrusion face 5 transmits axial load with the quiet power of rubbing of the loading portion 2 ' of tensile sample 6.When tensile sample 6 skidded tendency owing to the stiction of surface quality influence and tooth piece 1 and tooth piece 2, protruding pin 4 can provide effective clamping load simultaneously with cooperating of 7 of pin-and-holes, guarantees that tensile sample 6 is fixed in the anchor clamps.During actual the use, in groups tooth piece protruding pin on the grasping system, the register pin in the time of also can becoming tensile sample 6 and load, auxiliary tensile sample 6 initialization clampings.
Assembling process of the present utility model is as follows:
Fig. 6,7 is depicted as the assembling synoptic diagram of tooth piece, sample and typical pneumatic flat push type chucking appliance system that present embodiment mentions.Two pairs of supporting tooth pieces 1 and tooth piece 2 are contained in respectively in the anchor clamps of cupping machine fixed cross beam 8 and moved cross beam 9.During work, regulate earlier the distance between fixed cross beam 8 and the moved cross beam 9, the pin-and-hole 7 at the loading portion 2 ' two ends of the protruding pin 4 of two tooth pieces 2 and tensile sample 6 is articulated.The closed then lower clamp of going up makes the groove 3 of tooth piece 1 and protruding pin 4 bondings and the equal interlock tensile sample 6 of the flank of tooth of tooth piece 2, and clamping finishes thus.During test, moved cross beam 9 separates with fixed cross beam 8, and anchor clamps provide holding force to sample simultaneously by the flank of tooth and protruding pin, prevents that tensile sample 6 skids in the loading procedure.After tensile sample 6 was broken, moved cross beam 9 resetted, and next root companion specimens can be articulated between lower clamp tooth piece protruding pin easily, makes protruding pin possess the function of register pin simultaneously.
Claims (7)
1. the tooth piece of a tensile sample comprises two pairs of tooth pieces, it is characterized in that:
Tooth piece surface is provided with some projectioies;
In every pair of tooth piece, a tooth piece has a groove at least, and another tooth piece is provided with a protruding pin that is complementary with it at least.
2. the tooth piece of tensile sample as claimed in claim 1, it is characterized in that: tooth piece of described tooth piece centering has a groove, and another tooth piece is provided with a protruding pin that is complementary with it.
3. the tooth piece of tensile sample as claimed in claim 1, it is characterized in that: tooth piece of described tooth piece centering has a pair of vertical setting of types groove, and another tooth piece is provided with a pair of vertical setting of types protruding pin that is complementary with it.
4. as the tooth piece of any described tensile sample of claim 1 to 3, it is characterized in that: described groove is a circular hole, and protruding pin is cylindric.
5. the tooth piece of tensile sample as claimed in claim 4, it is characterized in that: the projection on described tooth piece surface is a tapered protrusion.
6. the tooth piece of tensile sample as claimed in claim 5, it is characterized in that: described protruding pin is fixed on the flank of tooth by being threaded.
7. the tooth piece of tensile sample as claimed in claim 5 is characterized in that: described protruding pin is fixed in the installation slotted eye that the flank of tooth reserves by interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200687917U CN201047817Y (en) | 2007-04-10 | 2007-04-10 | Tooth block of tensile specimen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200687917U CN201047817Y (en) | 2007-04-10 | 2007-04-10 | Tooth block of tensile specimen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201047817Y true CN201047817Y (en) | 2008-04-16 |
Family
ID=39300405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200687917U Expired - Fee Related CN201047817Y (en) | 2007-04-10 | 2007-04-10 | Tooth block of tensile specimen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201047817Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776550B (en) * | 2010-02-04 | 2011-04-27 | 西北工业大学 | Tensile test fixture used for tubular product sample |
| CN102735529A (en) * | 2012-06-12 | 2012-10-17 | 燕山大学 | Testing method realizing integration of hot-working simulation and performance test |
| CN102830012A (en) * | 2012-07-30 | 2012-12-19 | 国核宝钛锆业股份公司 | Clamping control device for foil strip high-temperature tensile test |
| CN103954483A (en) * | 2014-03-18 | 2014-07-30 | 西安交通大学 | Superhigh-strength steel plate-shaped fatigue testing specimen, clamped position processing method and high-cycle fatigue testing method of superhigh-strength steel plate-shaped fatigue testing specimen |
-
2007
- 2007-04-10 CN CNU2007200687917U patent/CN201047817Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776550B (en) * | 2010-02-04 | 2011-04-27 | 西北工业大学 | Tensile test fixture used for tubular product sample |
| CN102735529A (en) * | 2012-06-12 | 2012-10-17 | 燕山大学 | Testing method realizing integration of hot-working simulation and performance test |
| CN102830012A (en) * | 2012-07-30 | 2012-12-19 | 国核宝钛锆业股份公司 | Clamping control device for foil strip high-temperature tensile test |
| CN103954483A (en) * | 2014-03-18 | 2014-07-30 | 西安交通大学 | Superhigh-strength steel plate-shaped fatigue testing specimen, clamped position processing method and high-cycle fatigue testing method of superhigh-strength steel plate-shaped fatigue testing specimen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080416 Termination date: 20160410 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |