CN102539232B - Convertible modular fixture of multifunctional frictional wear testing machine - Google Patents
Convertible modular fixture of multifunctional frictional wear testing machine Download PDFInfo
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- CN102539232B CN102539232B CN2011104533800A CN201110453380A CN102539232B CN 102539232 B CN102539232 B CN 102539232B CN 2011104533800 A CN2011104533800 A CN 2011104533800A CN 201110453380 A CN201110453380 A CN 201110453380A CN 102539232 B CN102539232 B CN 102539232B
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Abstract
The invention provides a convertible modular fixture of a multifunctional frictional wear testing machine, relating to an indexable numeric control turning blade fixture. The primary structure of a convertible fixture of the convertible modular fixture provided by the invention is a stepped slot, the stepped slot is provided with an upper base surface, a slot side and a slot bottom surface, the slot side and the slot bottom surface are mutually vertical, the lower part of the stepped slot is provided with a U-shaped opening cutter feeding slotted hole, the upper part of the stepped slot is provided with a U-shaped opening cutter retracting slotted hole which is consist with the direction of the cutter feeding slotted hole, a slot included angle, a tool cutting edge angle, an oblique angle, tool cutting edge inclination and a front angle related angle are formed, and a calculation formula which can design and calculate an included angle-inclined angle between a center line of a slot and the horizontal line is provided, namely the tool cutting edge angle Kr is equal to 90 degrees plus or minus (oblique angle alpha-1/2. the slot included angle theta), thus the primary structure of the convertible fixture which can be comprehensively and accurately adaptive to a diversity indexable numeric control turning blade, and an accurate, high-efficiency and practical innovative tool is provided for detecting and evaluating tribological properties and cutting capacity of the indexable numeric control turning blade.
Description
Technical field
The convertible built-up jig of multifunction friction wear testing machine of the present invention is specifically related to the indexable numerical control turning insert clamp of multifunction friction wear testing machine (UMT).
Background technology
The UMT multifunction friction wear testing machine of U.S. CE TR company is a kind of widely used tribology test unit, adopts suitable anchor clamps, can estimate the frictional behaviour of indexable numerical control turning blade and surface coating thereof.Because the variation of indexable numerical control turning insert shape, and in actual turning, the branch of left and right sides offset tool is arranged, and multiple tool cutting edge angle, anterior angle, cutting edge inclination, give and directly adopt indexable numerical control turning blade to carry out the test of UMT tribology to bring difficulty.The anchor clamps of prior art, simply vertical direction is installed, can clamping indexable numerical control turning blade model single, tool cutting edge angle, anterior angle, cutting edge inclination can not effectively embody, and can not guarantee the repeatability of indexable numerical control turning blade clamping, so that influence the confidence level of experimental data, can not satisfy the demand of experiment.For this reason, need exploitation at the convertible built-up jig of UMT multifunction friction wear testing machine.
Summary of the invention
The purpose of this invention is to provide the convertible built-up jig of a kind of multifunction friction wear testing machine, adapt to the direct clamping of diversified indexable numerical control turning blade to testing machine, for simulating indexable numerical control turning blade cut operating mode, detect the tribological property of indexable numerical control turning blade and coating thereof, the cutting power of the indexable numerical control turning blade of test and appraisal accurately and effectively, accurate, efficient, practical innovation instrument is provided.
The convertible built-up jig of the present invention, formed by clamp base and convertible clip base, convertible clip base is connected with the draw-in groove of clamp base by the upper end convex shoulder, and bolted, convertible clip base are a step trough, this step trough has basal plane, groove side and groove bottom, the groove side is vertical mutually with groove bottom, has U-shaped opening to go into the cutter slotted eye in the step trough bottom, on step trough top the U-shaped opening withdrawing slotted eye consistent with cutter slotted eye direction arranged, is constructed as follows relevant how much angles:
The opening angle of U-shaped opening cutter slotted eye is the groove angle theta adaptive with indexable numerical control turning insert shape;
In the basal plane, blade main cutting edge and tested sample vertical direction angle are tool cutting edge angle Kr;
In the basal plane, the angle of groove center line and horizontal line is oblique angle α;
In the reference tool major cutting edge plane, the angle of blade main cutting edge and basal plane is cutting edge inclination λ;
In the reference orthogonal plane, the angle of groove bottom and basal plane is anterior angle γ;
Because the groove angle theta relevant with indexable numerical control turning blade, tool cutting edge angle Kr, anterior angle γ and each parameter of cutting edge inclination λ are known or definite, cutting edge inclination λ and anterior angle γ have determined the angle position of the relative basal plane of groove bottom, having only influences that the adaptive key parameter of the convertible clip base basal plane of the indexable numerical control turning blade of diversity---the angle-oblique angle α of groove center line and horizontal line also needs to determine, the present invention is according to the relation of the relevant geometric angle of convertible clip base step trough, proposed to design the computing formula of the angle-oblique angle α of groove center line and horizontal line: tool cutting edge angle Kr=90 ° ± (oblique angle α-1/2 groove angle theta s), can calculate the oblique angle α of convertible clip base by this formula
S relates to the trigonometric function coefficient of relationship of anterior angle γ and cutting edge inclination λ in the formula, and the numerical approximation value of coefficient s is 1, so this design calculation formula is expressed as:
Tool cutting edge angle Kr=90 ° ± (oblique angle α-1/2 groove angle theta)
When above-mentioned tool cutting edge angle Kr was the obtuse angle, this design calculation formula was:
Tool cutting edge angle Kr=90 °+(oblique angle α-1/2 groove angle theta);
When above-mentioned tool cutting edge angle Kr was right angle or acute angle, this design calculation formula was:
Tool cutting edge angle Kr=90 °-(oblique angle α-1/2 groove angle theta);
By above-mentioned design calculation formula, thus obtain can with the indexable numerical control turning blade of diversity accurate adaptive convertible clip base comprehensively, guarantee that indexable numerical control turning blade is identical with various angles and actual cut that sample contacts.
Go into the left and right direction of cutter slotted eye according to the U-shaped opening in above-mentioned convertible clip base bottom, the turning cutter of corresponding clamping is right avertence cutter and left avertence cutter respectively.
The convertible built-up jig of the present invention, can be directly installed on indexable numerical control turning blade on the UMT multifunction friction wear testing machine, guarantee that indexable numerical control turning blade is identical with various angles and the actual cut of sample, simulate the cutting operating mode of indexable numerical control turning blade.Convertible built-up jig is divided into into clamp base and convertible clip base two large divisions, and wherein convertible clip base is arranged to disposable, and dismounting and replacing are simple and convenient, highly versatile.Convertible clip base is a step trough, adopts semi open model to clamp to indexable numerical control turning blade, so appearance similar, the indexable numerical control turning blade that varies in size, but on a kind of convertible clip base clampings all.Indexable numerical control turning blade all is that the face face contacts with convertible clip base, make clamping solid and reliable, the location accurately, the convertible built-up jig of the present invention adapts to the direct clamping of diversified indexable numerical control turning blade to testing machine, for simulating indexable numerical control turning blade cut operating mode, detect the tribological property of indexable numerical control turning blade and coating thereof, the cutting power of the indexable numerical control turning blade of test and appraisal accurately and effectively, accurate, efficient, practical innovation instrument is provided.
Description of drawings
Fig. 1 is clamp base figure
Fig. 2 is each floor map of groove structure of clip base
Fig. 3 is clip base (right avertence cutter) front view, and α is groove center line and horizontal plane angle
Fig. 4 is clip base vertical channel bottom surface direction partial view
Fig. 5 is the A-A cut-open view of clip base (right avertence cutter)
Fig. 6 is the B-B cut-open view of clip base (right avertence cutter)
Fig. 7 is clip base (left avertence cutter) front view
Fig. 8 is the anchor clamps full figures
Fig. 9 is anchor clamps whole assembling front views on UMT multifunction friction wear testing machine
Figure 10 is whole assembling C-C sectional view
Figure 11 is whole assembling D-D sectional view
Embodiment
How now further specify the present invention by reference to the accompanying drawings implements:
As shown in Figure 2 in the example, reference tool major cutting edge plane 21 is perpendicular to basal plane 1, and parallel with the intersection of groove bottom 3 with groove side 2, and reference orthogonal plane 20 is simultaneously perpendicular to basal plane 1 and reference tool major cutting edge plane 21.
In the example, use four screws 12 that clamp base 6 is installed on the UMT power sensor 11 as shown in Figure 9.Four screws 12 evenly are installed in 6 four jiaos of clamp base, make the clamping of clamp base 6 on testing machine firm, and the location accurately.
Then, according to indexable numerical control turning blade 13, select suitable convertible clip base 7, for example the indexable numerical control turning blade 13 of the series of CNMG shown in the figure is example, according to industry standard, these indexable numerical control turning blade 13 profile rhombus angles be 80 ° known.According to actual turning operating mode, all the other each angles are namely thereupon by corresponding selected: the right avertence cutter, tool cutting edge angle is 95 °, and anterior angle is negative 6 °, and cutting edge inclination is negative 6 °, the groove angle theta of the convertible clip base 7 that forms a complete set of with it is 80 °, γ is designed to 6 °, and λ is designed to 6 °, so the angle position of groove bottom 3 and basal plane 1 is determined, according to design calculation formula: tool cutting edge angle Kr=90 °+(oblique angle α-1/2 groove angle theta), calculate the groove center line and horizontal direction angle oblique angle α should be designed to 45 °.So the required convertible clip base 7 that satisfies above-mentioned each geometric angle parameter is determined.The indexable numerical control turning blade of determining 13 is stuck in clip base 7 grooves, bolt 10 passes the center pit of indexable numerical control turning blade 13 and the U-shaped opening of convertible clip base 7 is gone into cutter slotted eye 4, nut 8 screws in bolt 10 at the other end, manually fastening nut 8 arrives to a certain degree, adjust the position of indexable numerical control turning blade 13 in groove, indexable numerical control turning blade 13 is close to groove side 2,19, with spanner grip nut 8, is screwed bolt 10 then.Owing to adopt semi open model to clamp, therefore different sizes, but the indexable numerical control turning blade 13 of appearance similar, but on a kind of convertible clip base 7 clampings all.Indexable numerical control turning blade 13 all is that the face face contacts with convertible clip base 7, makes clamping solid and reliable.
The convex shoulder 18 of the convertible clip base 7 of the good indexable numerical control turning blade 13 of clamping is inserted in the draw-in groove 17 of clamp base 6, adjust the position, make left and right sides justify align, screw 9 pierces into both holes, just can tighten.When needs are changed convertible clip base 7, only need back-out screw 9, just dismantled and assembled replacing.It is simple and convenient that clamp base 6 and convertible clip base 7 split, and when carrying out different indexable numerical control turning blades 13 experiments, only needs to change convertible clip base 7 and just can.
Use two screws 15 that the sound transducer seat 16 that sound transducer is housed is fixed on the side of convertible clip base 7, guarantee that effectively sound transducer is close to convertible clip base 7.
According to above installation steps, on UMT multifunction friction wear testing machine, each angle that indexable numerical control turning blade 13 contacts with sample 14 has just embodied identical tool cutting edge angle with actual turning, anterior angle, cutting edge inclination, left and right sides offset tool that experiment needs.
In the example, parallel reference orthogonal plane 20 is done the C-C section of whole assembling as shown in figure 10, and indexable numerical control turning blade 13 transversals that obtain and the angle γ of basal plane 1 are exactly needed anterior angle negative 6.
In the example, parallel reference tool major cutting edge plane 21 is done the D-D section of whole assembling as shown in figure 11, and indexable numerical control turning blade 13 transversals that obtain and the included angle X of basal plane 1 are exactly negative 6 ° of needed cutting edge inclination.
In the example, main cutting edge 22 is tool cutting edge angle Kr with the angle of sample 14 vertical direction as shown in Figure 9.But when indexable numerical control turning blade 13 tool cutting edge angle right angles or acute angle, tool cutting edge angle is the supplementary angle of Kr among the figure, tool cutting edge angle is the situation at supplementary angle each other, both installation way are identical, press Kr=90 ° of design calculation formula tool cutting edge angle-(oblique angle α-1/2 groove angle theta), after calculating groove center line and horizontal direction angle oblique angle α, can determine that institute is with regard to the convertible required convertible clip base 7 of use.
Claims (2)
1. the convertible built-up jig of multifunction friction wear testing machine, formed by clamp base and convertible clip base, it is characterized in that convertible clip base is connected with the draw-in groove of clamp base by the upper end convex shoulder, bolted, convertible clip base is a step trough, this step trough has basal plane, groove side and groove bottom, the groove side is vertical mutually with groove bottom, there is U-shaped opening to go into the cutter slotted eye in the step trough bottom, on step trough top the U-shaped opening withdrawing slotted eye consistent with going into cutter slotted eye direction arranged, is constructed as follows relevant how much angles:
The opening angle that U-shaped opening is gone into the cutter slotted eye is the groove angle theta adaptive with indexable numerical control turning insert shape;
In the basal plane, blade main cutting edge and tested sample vertical direction angle are tool cutting edge angle Kr;
In the basal plane, the angle of groove center line and horizontal line is oblique angle α;
In the reference tool major cutting edge plane, the angle of blade main cutting edge and basal plane is cutting edge inclination λ;
In the reference orthogonal plane, the angle of groove bottom and basal plane is anterior angle γ;
Because the groove angle theta relevant with indexable numerical control turning blade, tool cutting edge angle Kr, anterior angle γ and each parameter of cutting edge inclination λ are known or definite, cutting edge inclination λ and anterior angle γ have determined the angle position of the relative basal plane of groove bottom, having only influences that the adaptive key parameter of the convertible clip base basal plane of the indexable numerical control turning blade of diversity---the angle-oblique angle α of groove center line and horizontal line also needs to determine, relation according to the relevant geometric angle of convertible clip base step trough, proposed to design the computing formula of the angle-oblique angle α of groove center line and horizontal line: tool cutting edge angle Kr=90o ± (oblique angle α-1/2 groove angle theta s), can calculate the oblique angle α of convertible clip base by this formula, because s relates to the trigonometric function coefficient of relationship of anterior angle γ and cutting edge inclination λ in the formula, the numerical approximation value of coefficient s is 1, so this design calculation formula is expressed as:
Tool cutting edge angle Kr=90o ± (oblique angle α-1/2 groove angle theta),
When its tool cutting edge angle Kr was the obtuse angle, this design calculation formula was:
Tool cutting edge angle Kr=90o+(oblique angle α-1/2 groove angle theta);
When its tool cutting edge angle Kr was right angle or acute angle, this design calculation formula was:
Tool cutting edge angle Kr=90o-(oblique angle α-1/2 groove angle theta).
2. the convertible built-up jig of multifunction friction wear testing machine according to claim 1 is characterized in that going into according to the U-shaped opening in convertible clip base bottom the left and right direction of cutter slotted eye, respectively corresponding clamping right avertence cutter and left avertence cutter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104533800A CN102539232B (en) | 2011-12-30 | 2011-12-30 | Convertible modular fixture of multifunctional frictional wear testing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104533800A CN102539232B (en) | 2011-12-30 | 2011-12-30 | Convertible modular fixture of multifunctional frictional wear testing machine |
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| Publication Number | Publication Date |
|---|---|
| CN102539232A CN102539232A (en) | 2012-07-04 |
| CN102539232B true CN102539232B (en) | 2013-09-25 |
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| CN2011104533800A Active CN102539232B (en) | 2011-12-30 | 2011-12-30 | Convertible modular fixture of multifunctional frictional wear testing machine |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954497B (en) * | 2014-05-16 | 2016-05-25 | 重庆大学 | A kind of multi-functional to grinding jig for on-line measurement material friction-abrasion tester |
| CN105352794B (en) * | 2015-12-07 | 2018-01-23 | 中国矿业大学 | The piece fixture that a kind of friction surface adaptively contacts |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5145294A (en) * | 1991-03-15 | 1992-09-08 | National Carbide Outlet, Inc. | Milling cutter capable of using indexable inserts of various shapes |
| US6152658A (en) * | 1998-03-16 | 2000-11-28 | Iscar Ltd. | Modular cutting tool assembly |
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2011
- 2011-12-30 CN CN2011104533800A patent/CN102539232B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5145294A (en) * | 1991-03-15 | 1992-09-08 | National Carbide Outlet, Inc. | Milling cutter capable of using indexable inserts of various shapes |
| US6152658A (en) * | 1998-03-16 | 2000-11-28 | Iscar Ltd. | Modular cutting tool assembly |
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| CN102539232A (en) | 2012-07-04 |
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