CN105397120A - Angle-adjustable inner circle helical tooth and chute machining device - Google Patents
Angle-adjustable inner circle helical tooth and chute machining device Download PDFInfo
- Publication number
- CN105397120A CN105397120A CN201510938532.4A CN201510938532A CN105397120A CN 105397120 A CN105397120 A CN 105397120A CN 201510938532 A CN201510938532 A CN 201510938532A CN 105397120 A CN105397120 A CN 105397120A
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- China
- Prior art keywords
- angle
- knife bar
- inner circle
- cutter
- skewed slot
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/06—Profile cutting tools, i.e. forming-tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
- B23B27/16—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped
- B23B27/1659—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped with plate-like exchangeable cutting inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
- B23B27/16—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped
- B23B27/1681—Adjustable position of the plate-like cutting inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2205/00—Fixation of cutting inserts in holders
- B23B2205/04—Fixation screws, bolts or pins of particular form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2205/00—Fixation of cutting inserts in holders
- B23B2205/04—Fixation screws, bolts or pins of particular form
- B23B2205/045—Fixation screws, bolts or pins of particular form orientated obliquely to the hole in the insert or to the seating surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2205/00—Fixation of cutting inserts in holders
- B23B2205/10—Fixation of cutting inserts in holders using two or more fixation screws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2220/00—Details of turning, boring or drilling processes
- B23B2220/12—Grooving
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
The invention relates to an angle-adjustable inner circle helical tooth and chute machining device. Structurally, a chute is formed in the end of a cutter rod, three screw holes are formed in a cutter rod clamping groove cutter, and the cutter rod is provided with an angle adjusting unit and an adjusting locking unit; and after the angle is adjusted, a locking screw of the adjusting locking unit is screwed and presses and fixes the angle adjusting unit, the groove cutter is closely attached to the positioning plane of a positioning plate of the angle adjusting unit for positioning, the groove cutter is pressed through two pressing screws close to the cutter rod clamping groove cutter, and the positioning plate of the angle adjusting unit is fixed to the cutter rod by screwing three pressing screws. Installing and using are convenient and fast, positioning is stable, the angle correction is adjusted within the angle adjusting range allowed by the device through a meshing gear pair of the angle adjusting unit, and reliable, convenient and efficient machining of the inner circle chute and helical teeth can be effectively guaranteed due to high precision of numerical control equipment. The device is easy and convenient to install and operate, and the requirement for the skill level of operators is low. The labor intensity of the operators is low during online machining.
Description
Technical field
The present invention relates to a kind of angle adjustable inner circle helical teeth and skewed slot processing unit (plant), the rotary type work pieces process that inner circle has helical teeth and skewed slot design can be widely used in, can be contained on horizontal or vertical numerical controlled lathe, consistent with the angle of processed inner circle skewed slot by the angle adjusting adjustment calibration tank cutter clamping angle be contained on knife bar, control tool sharpening track by the numerical control program of input numerically controlled lathe, complete the processing of inner circle helical teeth and skewed slot.
Background technology
Steam turbine has stator and rotor two large divisions.Operationally rotor high-speed rotates, and stator is fixed, and therefore must keep certain gap between rotor and stator, does not make phase mutual friction.When steam flows through steam turbine each level work, pressure, temperature decline step by step, there is pressure reduction in dividing plate both sides.Steam flows through except acting except the overwhelming majority from the passage of stator, movable vane, and sub-fraction can flow through and not do work from various gap, becomes a kind of loss, reduces the efficiency of unit; Rotor also must pass cylinder, is supported on bearing, also must leave gap herein.For the front end of high-pressure cylinder two ends and intermediate cylinder, the steam pressure in cylinder is greater than external atmospheric pressure, steam will be had herein to spill, reduce unit efficiency, and cause partial coagulation water loss.At the exhaust end of intermediate pressure cylinder and the two ends of low pressure (LP) cylinder because the steam pressure in cylinder is lower than the atmospheric pressure in the external world, pass in the gap of cylinder at main shaft, air will be had to bleed in cylinder.Because air can not condense in condenser, thus reduce vacuum, reduce steam acting ability.In order to reduce the gas leakage in above-mentioned gap everywhere, ensure that steam turbine normal safe runs again, in Design of Steam Turbine, spy is provided with various packing.Packing can be divided into flow passage component packing, diaphragm gland and shaft end gland seal three major types, and structure mainly contains labyrinth gland, brush steam seal and Honeycomb steam seal, and wherein labyrinth gland is most widely used general.The present invention is for the inner circle helical teeth that solves or the processing of skewed slot part, and structure is subordinate to the one of labyrinth gland.
This part is the packing that inner circle has helical teeth and skewed slot, and because of its structure and the status requirement relative to rotor, processing bothers very much, and packing processing is that a difficulty all facing of Steam Turbine is large, technology content and all very high technology problem of added value.
The present invention is to solve helical teeth packing in labyrinth gland for design original intention, this gland seal structure feature belongs to whole coil structures, is made up of multiple arc segment structure, part external diameter >=700mm, on conventional packing part basis, add near end and the whole helical teeth structure circumferentially of endoporus body.This helical teeth two sides becomes to become respectively α, β angle with axis, and angle is determined according to thermodynamic computing.Helical teeth is several variant according to the position difference residing for packing, and helical teeth crown width l<1.5mm, tooth depth h >=4mm is R at the bottom of tooth, and R radius is very little, and on axial direction, helical teeth structure is also very little with contiguous part portion pitch.The helical teeth processing of this structure type is mainly:
(1) circumferencial direction helical teeth quantity is more, ensures that the angle of each helical teeth acquires a certain degree of difficulty.
(2) helical teeth profile of tooth is special, and space width is narrow, and cutter poor rigidity is easily broken, and difficulty of processing is larger.
(3) helical teeth crown is thinner, need formulate suitable processing scheme and cutting parameter, avoids helical teeth to topple over, and ensures Geometrical Tolerance Principle.
Summary of the invention
The object of the invention is to solve above-mentioned processing difficulties, a kind of angle adjustable inner circle helical teeth and skewed slot processing unit (plant) are provided, this device belongs to the design feature of slewing parts according to this type of part, by the angle adjustment to process tool, firmly clamping, accurately locate, ensure machining angle and process system rigidity, workpiece is carried out slightly, finish turning, thick essence cuts skewed slot and helical teeth, ensures the helical teeth of helical teeth packing and the crudy of skewed slot.Structure of the present invention is simple, and processing prepares convenient, according to processing parts size characteristic, can purchase homologous series device, is processed with the similar structures part of modular implementation differing tilt angles by the position changing housing screw.The processing of the very large helical teeth of difficulty and skewed slot part can be realized, ensure inner circle helical teeth and skewed slot form and position tolerance, good machined surface quality, there is not high to operator's skill set requirements, that clamping is easy to operate feature.
The present invention is achieved through the following technical solutions:
Angle adjustable inner circle helical teeth and skewed slot processing unit (plant), by knife bar, angle adjusting, adjustment locking unit, three housing screws, groove cutter forms, it is characterized in that: described knife bar has skewed slot in end, three screws are provided with at knife bar holding tank cutter place, angle adjusting and adjustment locking unit knife bar be equipped with, after angle adjustment is good, the lock-screw of adjustment locking unit screws to be pushed down angle adjusting and fixes, groove cutter is close to the locating surface location of the location-plate of angle adjusting, by two housing screw pressing groove cuttves near knife bar holding tank cutter place, and tighten three compress spiral shells angle adjusting location-plate is fixed on knife bar.
The angle of groove cutter is adjusted by engaging tooth wheel set by angle adjusting, by the graduation mark instruction institute hue angle of angle indication dial disc, conveniently can observe adjustment.After the angle adjustment scope allowed is adjusted to the right place, the adjustment location-plate that groove cutter is fitted in angle adjusting can obtain wanted angle, need the angle adjusted to be determined by the angle of trough in workpiece inner circle.After consistent with the angle of processed inner circle skewed slot with angle adjusting adjustment tank nose angle degree, control tool sharpening track by the numerical control program of input numerically controlled lathe, complete the processing of inner circle helical teeth and skewed slot.
The clamping groove size that self clamping thickness of described knife bar rear end installs knife bar than machining tool is little, the locating surface of knife bar is close on the locating surface of Installing machine tool groove, and oblique notch in the locating surface of knife bar and knife bar front end, height direction, Shang Caodao center locating surface is consistent.
The skewed slot size that described knife bar leading section is opened is larger than the size of groove cutter retained part, ensures that groove cutter loads skewed slot.
The angle θ of the groove cutter that described knife bar fills is determined by the angle [alpha] of skewed slot both sides in workpiece inner circle and β, θ=α+(β-α)/2, α is the angle on the limit that in workpiece inner circle, trough gradient is little, and β is the angle on the limit that in workpiece inner circle, trough gradient is large.
Near the centre-to-centre spacing 40mm shorter in the knife bar length of selected groove cutter of two screws at knife bar holding tank cutter place, to ensure that cutter compresses position.
The present invention controls tool sharpening track by the numerical control program inputting numerically controlled lathe, completes the processing of inner circle helical teeth or skewed slot.
Device of the present invention can be widely used in the rotary type work pieces process that inner circle has helical teeth or skewed slot design, can be contained on horizontal or vertical numerical controlled lathe.Fast easy to install, location is firm, angle correct is adjusted by the engaging tooth wheel set of angle adjusting, conveniently observe reading by angle indication dial disc, the high accuracy of combining with digital control equipment, effectively can ensure reliable, convenient, the highly-efficient processing of inner circle skewed slot or helical teeth.This device is installed easy and simple to handle, requires low to operator's level of skill.During on-line machining, operator's labour intensity is low.Installation cost is cheap, processing can be completed by outsourcing standard cutter, ensure the stability of process tool by the blade own dimensions precision of outsourcing standard cutter, the repetitive positioning accuracy of cutter accessory etc., the preparatory period avoiding adopting dedicated tool to bring is long, difficulty of processing is large, cutter buying expenses is high, cutter is easy to wear, to impact etc. the harmful effect of producing to product processing quality after tool wear.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is upward view of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, patent of the present invention is described in detail:
As shown in Figure 1 and Figure 2, the present invention is made up of knife bar 1, angle adjusting 2, adjustment locking unit 3, groove cutter 4, three housing screws 5, described groove cutter 4 is outsourcing standard cell cutter, it is characterized in that: described knife bar 1 has skewed slot in end, the orientation angle θ of groove cutter 4 clamping on knife bar 1 is determined by the angle [alpha] of skewed slot both sides in workpiece inner circle and β, θ=α+(β-α)/2, α is the angle on the limit that in workpiece inner circle, trough gradient is little, and β is the angle on the limit that in workpiece inner circle, trough gradient is large; At knife bar 1 holding tank cutter 4, place is provided with three screws, angle adjusting 2 and adjustment locking unit 3 knife bar 1 be equipped with, after angle adjustment is good, the lock-screw of adjustment locking unit 3 screws to be pushed down angle adjusting 2 and fixes, after groove cutter 4 againsts the locating surface of angle adjusting 2 location-plate, by two housing screw 5 pressing groove cuttves 4 near knife bar 1 holding tank cutter 4 place, and tighten three compression spiral shells, angle adjusting 2 location-plate is fixed on knife bar 1 by 5.Angle adjusting 2 of the present invention, adjustment locking unit 3 are existing structure, directly buy and obtain.
The clamping groove size that self clamping thickness of described knife bar rear end installs knife bar than machining tool is little, the locating surface of knife bar is close on the locating surface of Installing machine tool groove, and oblique notch in the locating surface of knife bar and knife bar front end, height direction, Shang Caodao center locating surface is consistent.The skewed slot size that described knife bar leading section is opened is larger than the size of groove cutter retained part, ensures that groove cutter loads skewed slot.Near centre-to-centre spacing about the 40mm shorter in the knife bar length of selected groove cutter of two screws at knife bar holding tank cutter place, to ensure that cutter compresses position.
Operation principle: the inner circle that will process has the helical teeth at certain angle of inclination, skewed slot workpiece is contained on the chuck of horizontal or vertical numerical controlled lathe, correct clamping, first the angle angle adjusting of angle adjustable inner circle helical teeth and skewed slot processing unit (plant) is adjusted angle, be contained in knife rest that is horizontal or vertical numerical controlled lathe afterwards, knife bar locating surface is adjacent to lathe cutter saddle datum level, knife rest screw in compression knife bar, again process tool to be fitted the locating surface of angle adjusting location-plate, slightly tighten housing screw and slightly compress cutter, to forge a knife with bevel protractor the angle of inclination of tool, after trimming tool bit angle of inclination is consistent with inner circle groove center line angle of inclination, tightening piece 5 housing screw, the system numerical programming procedure of combining with digital control lathe controls cutter path again, complete the processing of inner circle helical teeth and skewed slot.
Process tool is located and angle correct by the angle adjustment of angle adjusting of the present invention, make Tool in Cutting angle consistent with the machining angle of inner circle helical teeth and skewed slot, ensure that the processing stability of cutter from technological equipment with these means, inner circle helical teeth and skewed slot ground crudy is ensured again, successful with the good rigidity of whole toolsmith's process system.
Structure of the present invention can be widely used in the processing on horizontal or vertical numerical controlled lathe of inner circle helical teeth and skewed slot.Fast easy to install, processing prepares easy, and it is high a lot of that location is firm, efficiency and economy ratio manufacture and design dedicated tool, effectively can ensure machining accuracy and the surface quality of inner circle helical teeth and skewed slot.
It is good that the present invention has system rigidity, accurate positioning, and dimensional accuracy easily controls, finished surface matter
Measure, operator's labour intensity be low, the feature of convenient operation, to operator's level of skill require low.During on-line machining, operator's labour intensity is low.Installation cost is cheap.Manufactured by modularized design, efficient, stable, economic, the convenient processing on horizontal or vertical numerical controlled lathe of inner circle helical teeth and skewed slot part can be widely used in.
Claims (6)
1. angle adjustable inner circle helical teeth and skewed slot processing unit (plant), by knife bar, angle adjusting, adjustment locking unit, three housing screws, groove cutter forms, it is characterized in that: described knife bar has skewed slot in end, three screws are provided with at knife bar holding tank cutter place, angle adjusting and adjustment locking unit knife bar be equipped with, after angle adjustment is good, the lock-screw of adjustment locking unit screws to be pushed down angle adjusting and fixes, groove cutter is close to the locating surface location of the location-plate of angle adjusting, by two housing screw pressing groove cuttves near knife bar holding tank cutter place, and tighten three compress spiral shells angle adjusting location-plate is fixed on knife bar.
2. angle adjustable inner circle helical teeth according to claim 1 and skewed slot processing unit (plant), is characterized in that: the angle of groove cutter is adjusted by engaging tooth wheel set by angle adjusting, by the graduation mark instruction institute hue angle of angle indication dial disc.
3. angle adjustable inner circle helical teeth according to claim 1 and skewed slot processing unit (plant), it is characterized in that: the clamping groove size that self clamping thickness of described knife bar rear end installs knife bar than machining tool is little, the locating surface of knife bar is close on the locating surface of Installing machine tool groove, and oblique notch in the locating surface of knife bar and knife bar front end, height direction, Shang Caodao center locating surface is consistent.
4. angle adjustable inner circle helical teeth according to claim 1 and skewed slot processing unit (plant), is characterized in that: the skewed slot size that described knife bar leading section is opened is larger than the size of groove cutter retained part, ensures that groove cutter loads skewed slot.
5. angle adjustable inner circle helical teeth according to claim 1 and skewed slot processing unit (plant), it is characterized in that: the angle θ of the groove cutter that described knife bar fills is determined by the angle [alpha] of skewed slot both sides in workpiece inner circle and β, θ=α+(β-α)/2, α is the angle on the limit that in workpiece inner circle, trough gradient is little, and β is the angle on the limit that in workpiece inner circle, trough gradient is large.
6. angle adjustable inner circle helical teeth according to claim 1 and skewed slot processing unit (plant), is characterized in that: near the centre-to-centre spacing 40mm shorter in the knife bar length of selected groove cutter of two screws at knife bar holding tank cutter place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510938532.4A CN105397120A (en) | 2015-12-15 | 2015-12-15 | Angle-adjustable inner circle helical tooth and chute machining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510938532.4A CN105397120A (en) | 2015-12-15 | 2015-12-15 | Angle-adjustable inner circle helical tooth and chute machining device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105397120A true CN105397120A (en) | 2016-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510938532.4A Pending CN105397120A (en) | 2015-12-15 | 2015-12-15 | Angle-adjustable inner circle helical tooth and chute machining device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105397120A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106938343A (en) * | 2017-05-05 | 2017-07-11 | 中国长江动力集团有限公司 | The processing method and parameterization macro program digital control programming method of inner circle helical teeth or skewed slot |
| CN108971885A (en) * | 2018-09-29 | 2018-12-11 | 山东华云机电科技有限公司 | A kind of workpieces processing has Ultrasonic metal processing cutting tool for surface and its application of undercut structure feature |
| CN113714527A (en) * | 2021-09-13 | 2021-11-30 | 中国航发沈阳黎明航空发动机有限责任公司 | Universal tool holder and method for vertical numerically controlled lathe |
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| CN205341957U (en) * | 2015-12-15 | 2016-06-29 | 中国长江动力集团有限公司 | Circle skewed tooth and chute processingequipment in adjustable angle |
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| CN201632661U (en) * | 2009-12-29 | 2010-11-17 | 中钢集团邢台机械轧辊有限公司 | Integrated boring and turning tool |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106938343A (en) * | 2017-05-05 | 2017-07-11 | 中国长江动力集团有限公司 | The processing method and parameterization macro program digital control programming method of inner circle helical teeth or skewed slot |
| CN108971885A (en) * | 2018-09-29 | 2018-12-11 | 山东华云机电科技有限公司 | A kind of workpieces processing has Ultrasonic metal processing cutting tool for surface and its application of undercut structure feature |
| CN108971885B (en) * | 2018-09-29 | 2024-01-23 | 山东华云机电科技有限公司 | Ultrasonic metal surface machining tool with inverted concave structural characteristics for machining workpiece and application of ultrasonic metal surface machining tool |
| CN113714527A (en) * | 2021-09-13 | 2021-11-30 | 中国航发沈阳黎明航空发动机有限责任公司 | Universal tool holder and method for vertical numerically controlled lathe |
| CN113714527B (en) * | 2021-09-13 | 2024-02-23 | 中国航发沈阳黎明航空发动机有限责任公司 | Universal cutter holder and method for vertical numerical control lathe |
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