CN102717149A - Adjustable finishing broach of wheel disc and tenon slot combination surface - Google Patents
Adjustable finishing broach of wheel disc and tenon slot combination surface Download PDFInfo
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- CN102717149A CN102717149A CN2012101796762A CN201210179676A CN102717149A CN 102717149 A CN102717149 A CN 102717149A CN 2012101796762 A CN2012101796762 A CN 2012101796762A CN 201210179676 A CN201210179676 A CN 201210179676A CN 102717149 A CN102717149 A CN 102717149A
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Abstract
The invention discloses an adjustable finishing broach of wheel disc and tenon slot combination surface. The adjustable finishing broach comprises a mounting section, a cutting section and an adjusting section, wherein the cutting section consists of two halves of separate contour line blade elements and fixed on the mounting section through the adjusting section, and the adjusting section is a replaceable element to adjust the position of the contour line of the cutting section. According to the invention, the dimensional deviation of reground cutting edge can be removed; the geometric accuracy of precisely processed contour line is kept; the tool cost is reduced, and the service life of the tool is prolonged; and the adjustable finishing broach is suitable for broaching machining of the wheel disc and the tenon slot of a heavy gas turbine rotor.
Description
Technical field
What the present invention relates to is a kind of tool for cutting machining, and in particular a kind of heavy duty gas turbine rotor disk tongue-and-groove adjustable finishing broach of combination profile in processing burnish broaching stage that is used for belongs to machinery manufacturing technology field.
Background technology
The extreme temperatures of gas turbine working rotor environment; Bear high speed rotary centrifugal force and additional stress during working rotor; The required precision ten minutes strictness of the fir-tree type tongue-and-groove that therefore wheel disc on the section of calming the anger of rotor and the turbine section is connected with blade is with the anti-fatigue ability of raising rotor.The production of heavy duty gas turbine (to the common name of 200MW level gas turbine) requires increasingly high to efficient, traditional form milling mode can not meet the demands again, adopts the wheel disc tongue-and-groove of broaching layout processing gas turbine rotor to become the main flow processing mode.China is not applicable to the fir-tree type tongue-and-groove finishing broach of the big specification of heavy duty gas turbine, and the external broaching tool of current use still exists serious, the frequent problem of refacing of tool wear.
The material of heavy duty gas turbine rotor disk belongs to unmanageable heat-resisting steel material; Cutting force is big in the contour broach process, cutting temperature is high, cutting burr and cutting vibration etc. are the principal element that influences wheel disc machining accuracy and surface quality; Wherein the most key is: the broaching cutters serious wear that is faced in the wheel disc tongue-and-groove cut, cost of charp tool problem of higher.The current method of the rake face of the broaching tool cutting edge of refacing that generally adopts is repaired the abrading section, and the molded lines direction after still refacing for the burnish broaching cutter but can't be adjusted, thereby causes profile form linear dimension precision to increase and reduce gradually along with the number of times of refacing.The adjustable burnish broaching cutter of exploitation profile molded lines direction is the key that solves this bottleneck problem.
Tongue-and-groove fine finishining broaching tool directly guarantees the final profile of tongue-and-groove, so the fine finishining broaching tool is most important for the tongue-and-groove crudy.Heavy duty gas turbine rotor disk race is all very high to the requirement of geometric accuracy and surface quality, and working face spacing tolerance is little, and jerk value requires low.At present the fine finishining broaching tool of the tongue-and-groove on the processing heavy duty gas turbine rotor disk is the monolithic molding broaching tool, because its side profile molded lines direction is non-adjustable, so the broaching tool dimensional accuracy is with refacing and reduce, and causes the expensive broaching tool of cost to shorten service life.
Retrieval through to the prior art document finds that (publication number: CN101774045A) " a kind of turbine disk fir-shaped mortise broaching tool " disclosed broaching cutters comprises necking tool, rough profile of tooth cutter, finish draw profile of tooth cutter, end face broaching tool (cap cutter) to Chinese invention patent; (publication number: CN201500817U) " a kind of turbine disk fir-shaped mortise machine folder broaching tool " disclosed machine folder broaching tool comprises tooth top cutter head, tooth bed plate head, profile cutter head, cutter hub, block, housing screw and hold-down screw to China's utility model patent.
Above-mentioned two parts of documents all relate to the turbine disk fir-shaped mortise broaching tool; But its structure does not all possess the adjustment function of side profile molded lines direction; The trailing flank molded lines geometric accuracy of refacing cutter all can obviously reduce, and all non-broaching fine finishining to the heavy duty gas turbine wheel disc of above amphitypy patent.Along with constantly riseing of combustion turbine power, the more difficult processing of the heat-resisting steel material that rotor disk adopts, tool wear is more serious, so the tongue-and-groove finishing broach has been proposed the requirement of higher maintenance profile form line geometry precision.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art; A kind of adjustable finishing broach of combination profile that is used for the processing of heavy duty gas turbine rotor disk tongue-and-groove is provided; It has flexible adjustable characteristics; The geometric accuracy that after refacing, can keep original profile molded lines, thus the manufacture difficulty of broaching tool itself reduced, satisfy heavy duty gas turbine rotor disk tongue-and-groove high accuracy, processing request cheaply.
The present invention realizes through following technical scheme:
The adjustable finishing broach of a kind of wheel disc tongue-and-groove combination profile; It includes installation portion, cutting portion and adjustment part, and wherein, cutting portion is the split type profile molded lines of a two halves blade spare; And be fixed in installation portion through the adjustment part, this adjustment part is the position of Replacement Part with adjustment cutting portion profile molded lines.
Described installation portion has groove longitudinally; Described cutting portion comprises left cutting teeth piece and right cutting teeth piece and is arranged at symmetrically in the groove of installation portion; Described adjustment part comprises the first adjustment cushion block, the second adjustment cushion block, the 3rd adjustment cushion block and the 4th adjustment cushion block; This first adjustment cushion block is arranged between said left cutting teeth piece and the right cutting teeth piece; This second adjustment cushion block is arranged between the inwall of left cutting teeth piece and groove, and the 3rd adjustment cushion block is arranged between the inwall of right cutting teeth piece and groove, and the 4th adjusts between the bottom surface of bottom and groove that cushion block is arranged at left cutting teeth piece and right cutting teeth piece.
Described cutting portion contains the cobalt high-vanadium high-speed steel by fine grain powder metallurgy to be processed, and hardness is HRC62～68.
The anterior angle of described cutting portion is 15～25 degree, and relief angle is 2～5 degree, and space width is 20～32 millimeters, and transverse tooth thickness is 6～9 millimeters, and the chip curling groove radius is 2.5～5 millimeters.
The profile molded lines of described cutting portion is a fir shape.
The present invention compared with prior art has the following advantages:
The adjustable finishing broach of said wheel disc tongue-and-groove combination profile is provided with the adjustment part between installation portion and cutting portion; After cutter is refaced; The visual wear degree is changed the adjustment cushion block of adjustment part easily; Change on the cutting portion and play the profile molded lines of shear action and the relative position of installation portion; Reach the effect of reconstruct cutter: changed the second adjustment cushion block and the 3rd adjustment cushion block of first adjustment cushion block and the both sides of the centre of horizontal corrective action, can adjust the tooth depth on the outline molded lines direction of left and right cutting teeth piece; Change the 4th adjustment cushion block of vertical corrective action, can adjust left and right cutting teeth piece position height along the vertical direction.Therefore; Twocouese of the present invention can be adjusted structure and can compensate broaching tool and grind the attrition value that causes again; Dimensional discrepancy after eliminating cutting edge and refacing has overcome the nonadjustable defective of existing broaching tool side flank profil molded lines direction height, keeps and has improved the geometric accuracy after cutter is refaced.
Structure of the present invention not only has good interchangeability and more renews the convenience of cutter tooth; And its architectural feature can realize recovery, maintenance and the raising of cutter geometric accuracy through adjustment; Also reduced the broaching tool requirement of the accuracy of manufacture first; Thereby reduced the cutter manufacturing cost, prolonged the service life of cutter.
The matrix material of said adjustable finishing broach is that the high cobalt of fine grain powder metallurgy contains the vanadium high-speed steel, thereby has guaranteed that cutter has certain fatigue strength, toughness and impact resistance.
Description of drawings
Fig. 1 is a cross sectional representation of the present invention.
Fig. 2 is a stereogram of the present invention.
Fig. 3 is that the teeth groove of cutting portion of the present invention cuts the shape partial enlarged drawing.
Among the figure, 1 installation portion, 2 left cutting teeth pieces, 3 right cutting teeth pieces, 4 first adjustment cushion blocks, 5 the 3rd adjustment cushion blocks, 6 the 4th adjustment cushion blocks, 7 second adjustment cushion blocks, 8 anterior angles, 9 relief angles, 10 transverse tooth thickness, 11 space widths, 12 chip curling groove radiuses.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment technical scheme of the present invention is elaborated, present embodiment is that prerequisite has provided detailed embodiment and concrete operating process with technical scheme of the present invention, but protection scope of the present invention is not limited to following embodiment.
As depicted in figs. 1 and 2; The adjustable finishing broach of wheel disc tongue-and-groove combination profile of the present invention includes installation portion 1, cutting portion and adjustment part; Wherein, Cutting portion is fixed in installation portion 1 through the adjustment part, and this adjustment part is a Replacement Part, with the relative position of adjustment cutting portion profile molded lines and installation portion 1.
Described installation portion 1 is a channel, and it has groove longitudinally.
Described cutting portion is the split type profile molded lines of a two halves blade spare, and its profile molded lines is a fir shape, and point of a knife is pointed at the top.This cutting portion comprises left cutting teeth piece 2 and right cutting teeth piece 3, and left cutting teeth piece 2 is arranged in the groove of installation portion 1 with right cutting teeth piece 3 symmetrically.The matrix of described cutting portion contains the cobalt high-vanadium high-speed steel by fine grain powder metallurgy to be processed, and hardness is HRC62～68.See also Fig. 3 again, the profile molded lines of described cutting portion is for forming the cutting edge of the final profile of wheel disc tongue-and-groove, and its anterior angle 8 is 15 °～25 °; Relief angle 9 is 2 °～5 °; Space width 11 is 20～32 millimeters, and transverse tooth thickness 10 is 6～9 millimeters, and chip curling groove radius 12 is 2.5～5 millimeters.
Described adjustment part comprises that the first adjustment cushion block 4, second is adjusted cushion block 7, the 3rd adjustment cushion block 5 and the 4th is adjusted cushion block 6.This first adjustment cushion block 4 is arranged between said left cutting teeth piece 2 and the right cutting teeth piece 3; This second adjustment cushion block 7 is arranged between the inwall of left cutting teeth piece 2 and installation portion 1 groove; The 3rd adjustment cushion block 5 is arranged between the opposite side inwall of right cutting teeth piece 3 and installation portion 1 groove; This first adjustment cushion block 4, the second adjustment cushion block 7 and the 3rd adjustment cushion block 5 be horizontal adjustment piece, and it is used to adjust the tooth depth of the lateral profile molded lines of left cutting teeth piece 2 and right cutting teeth piece 3.Between the bottom that the 4th adjustment cushion block 6 is arranged at left cutting teeth piece 2 and right cutting teeth piece 3 and the bottom surface of installation portion 1 groove, it is used to adjust cutting portion profile molded lines position height along the vertical direction, the dimensional discrepancy after refacing with the elimination cutting edge.
Below enumerate several embodiment of the invention with different tool geometrical parameters:
Embodiment one
Present embodiment is selected 20 ° anterior angle 8 for use, the surface roughness during with the assurance burnish broaching; Select 3 ° relief angle 9 for use, because the cutter wear of the tool flank that the material resilience causes, and reserve certain surplus of refacing to reduce knife face behind the cutter; The transverse tooth thickness 10 of cutting portion is chosen for 8 millimeters, and space width 11 is 31 millimeters, to guarantee cutting edge enough intensity is arranged; Chip curling groove radius 12 is chosen for the R2.5 millimeter, and bits are held in the thin layer cutting when being used for finish draw.
Embodiment two
Embodiment three
When the present invention worked, the side edge type line geometry precision after profile combination and separation formula adjustable structure is used to keep cutter to reface was to satisfy the strict demand of heavy duty gas turbine rotor disk tongue-and-groove processing.
Claims (5)
1. a wheel disc tongue-and-groove makes up the adjustable finishing broach of profile; It is characterized in that; Said finishing broach includes installation portion, cutting portion and adjustment part, and wherein, cutting portion is the split type profile molded lines of a two halves blade spare; And be fixed in installation portion through the adjustment part, this adjustment part is the position of Replacement Part with adjustment cutting portion profile molded lines.
2. the adjustable finishing broach of wheel disc tongue-and-groove combination profile according to claim 1; It is characterized in that; Described installation portion has groove longitudinally; Described cutting portion comprises left cutting teeth piece and right cutting teeth piece and is arranged at symmetrically in the groove of installation portion; Described adjustment part comprises the first adjustment cushion block, the second adjustment cushion block, the 3rd adjustment cushion block and the 4th adjustment cushion block, and this first adjustment cushion block is arranged between said left cutting teeth piece and the right cutting teeth piece, and this second adjustment cushion block is arranged between the inwall of left cutting teeth piece and groove; The 3rd adjustment cushion block is arranged between the inwall of right cutting teeth piece and groove, and the 4th adjusts between the bottom surface of bottom and groove that cushion block is arranged at left cutting teeth piece and right cutting teeth piece.
3. the adjustable finishing broach of wheel disc tongue-and-groove combination profile according to claim 1 and 2 is characterized in that described cutting portion contains the cobalt high-vanadium high-speed steel by fine grain powder metallurgy to be processed, and hardness is HRC62～68.
4. the adjustable finishing broach of wheel disc tongue-and-groove combination profile according to claim 1 and 2 is characterized in that the anterior angle of described cutting portion is 15～25 degree; Relief angle is 2～5 degree; Space width is 20～32 millimeters, and transverse tooth thickness is 6～9 millimeters, and the chip curling groove radius is 2.5～5 millimeters.
5. the adjustable finishing broach of wheel disc tongue-and-groove combination profile according to claim 1 and 2 is characterized in that the profile molded lines of described cutting portion is a fir shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101796762A CN102717149A (en) | 2012-06-01 | 2012-06-01 | Adjustable finishing broach of wheel disc and tenon slot combination surface |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101796762A CN102717149A (en) | 2012-06-01 | 2012-06-01 | Adjustable finishing broach of wheel disc and tenon slot combination surface |
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| CN102717149A true CN102717149A (en) | 2012-10-10 |
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| CN2012101796762A Pending CN102717149A (en) | 2012-06-01 | 2012-06-01 | Adjustable finishing broach of wheel disc and tenon slot combination surface |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102962515A (en) * | 2012-11-28 | 2013-03-13 | 成都发动机（集团）有限公司 | Rough slotting broach for processing high-temperature alloy and titanium alloy workpieces |
| CN106363233A (en) * | 2016-10-11 | 2017-02-01 | 恒锋工具股份有限公司 | Wheel groove finishing broach unit with equal cutting angles and wheel groove finishing broaching tool |
| CN106378498A (en) * | 2016-10-11 | 2017-02-08 | 恒锋工具股份有限公司 | Wheel groove finishing broach with wheel cutting tooth outline |
| CN106378497A (en) * | 2016-11-16 | 2017-02-08 | 攀枝花学院 | Curve gear cutting tool capable of adjusting gear cutting modulus |
| CN107096958A (en) * | 2017-06-27 | 2017-08-29 | 四川天虎工具有限责任公司 | A kind of yoke dove tail broaching tool |
| CN107649735A (en) * | 2017-08-24 | 2018-02-02 | 中南大学 | For processing the multistation helical teeth broaching tool and its processing method of turbine disc mortise |
| CN110524048A (en) * | 2019-08-30 | 2019-12-03 | 中国航发动力股份有限公司 | A kind of On Combined Broach |
| CN113814464A (en) * | 2021-09-29 | 2021-12-21 | 中国航发成都发动机有限公司 | Turbine disc inclined tree-shaped mortise broaching deformation control assembly and broaching process |
| CN113857561A (en) * | 2021-12-02 | 2021-12-31 | 中国航发燃气轮机有限公司 | Method for repairing scratch defect of gas turbine wheel disc fir-type tongue-and-groove working face |
Citations (5)
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| JPS61152317A (en) * | 1984-12-27 | 1986-07-11 | Mitsubishi Heavy Ind Ltd | Broach for working keyway |
| JP2004291098A (en) * | 2003-03-25 | 2004-10-21 | Mitsubishi Materials Kobe Tools Corp | Dimension adjustable assembly type internal broach |
| CN201500817U (en) * | 2009-09-18 | 2010-06-09 | 沈阳黎明航空发动机(集团)有限责任公司 | Turbine disk fir-tree tonguing and groove machine clamped broach |
| CN101774045A (en) * | 2009-09-28 | 2010-07-14 | 沈阳黎明航空发动机(集团)有限责任公司 | Turbine disk fir-shaped mortise broaching tool |
| CN201833067U (en) * | 2010-10-12 | 2011-05-18 | 嘉兴亿爱思梯工具有限公司 | Race broach group |
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2012
- 2012-06-01 CN CN2012101796762A patent/CN102717149A/en active Pending
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| JPS61152317A (en) * | 1984-12-27 | 1986-07-11 | Mitsubishi Heavy Ind Ltd | Broach for working keyway |
| JP2004291098A (en) * | 2003-03-25 | 2004-10-21 | Mitsubishi Materials Kobe Tools Corp | Dimension adjustable assembly type internal broach |
| CN201500817U (en) * | 2009-09-18 | 2010-06-09 | 沈阳黎明航空发动机(集团)有限责任公司 | Turbine disk fir-tree tonguing and groove machine clamped broach |
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Non-Patent Citations (1)
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102962515B (en) * | 2012-11-28 | 2014-12-10 | 成都发动机（集团）有限公司 | Rough slotting broach for processing high-temperature alloy and titanium alloy workpieces |
| CN102962515A (en) * | 2012-11-28 | 2013-03-13 | 成都发动机（集团）有限公司 | Rough slotting broach for processing high-temperature alloy and titanium alloy workpieces |
| CN106363233A (en) * | 2016-10-11 | 2017-02-01 | 恒锋工具股份有限公司 | Wheel groove finishing broach unit with equal cutting angles and wheel groove finishing broaching tool |
| CN106378498A (en) * | 2016-10-11 | 2017-02-08 | 恒锋工具股份有限公司 | Wheel groove finishing broach with wheel cutting tooth outline |
| CN106378497A (en) * | 2016-11-16 | 2017-02-08 | 攀枝花学院 | Curve gear cutting tool capable of adjusting gear cutting modulus |
| CN107096958B (en) * | 2017-06-27 | 2023-08-15 | 四川天虎工具有限责任公司 | Yoke pigeon tail broach |
| CN107096958A (en) * | 2017-06-27 | 2017-08-29 | 四川天虎工具有限责任公司 | A kind of yoke dove tail broaching tool |
| CN107649735A (en) * | 2017-08-24 | 2018-02-02 | 中南大学 | For processing the multistation helical teeth broaching tool and its processing method of turbine disc mortise |
| CN110524048B (en) * | 2019-08-30 | 2021-07-27 | 中国航发动力股份有限公司 | Assembled broach |
| CN110524048A (en) * | 2019-08-30 | 2019-12-03 | 中国航发动力股份有限公司 | A kind of On Combined Broach |
| CN113814464A (en) * | 2021-09-29 | 2021-12-21 | 中国航发成都发动机有限公司 | Turbine disc inclined tree-shaped mortise broaching deformation control assembly and broaching process |
| CN113857561A (en) * | 2021-12-02 | 2021-12-31 | 中国航发燃气轮机有限公司 | Method for repairing scratch defect of gas turbine wheel disc fir-type tongue-and-groove working face |
| CN113857561B (en) * | 2021-12-02 | 2022-02-15 | 中国航发燃气轮机有限公司 | Method for repairing scratch defect of gas turbine wheel disc fir-type tongue-and-groove working face |
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Application publication date: 20121010 |