CN104841990A - Machining method of H-shaped thin-wall parts - Google Patents

Machining method of H-shaped thin-wall parts Download PDF

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Publication number
CN104841990A
CN104841990A CN201510223017.8A CN201510223017A CN104841990A CN 104841990 A CN104841990 A CN 104841990A CN 201510223017 A CN201510223017 A CN 201510223017A CN 104841990 A CN104841990 A CN 104841990A
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CN
China
Prior art keywords
cutter
blank assembly
machining
machine tool
roughing
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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
Application number
CN201510223017.8A
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Chinese (zh)
Inventor
潘承民
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Liuzhou Agriculture-Countryside-Farmer Science And Technology Ltd
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Liuzhou Agriculture-Countryside-Farmer Science And Technology Ltd
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Liuzhou Agriculture-Countryside-Farmer Science And Technology Ltd filed Critical Liuzhou Agriculture-Countryside-Farmer Science And Technology Ltd
Priority to CN201510223017.8A priority Critical patent/CN104841990A/en
Publication of CN104841990A publication Critical patent/CN104841990A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23CMILLING
    • B23C3/00Milling particular work; Special milling operations; Machines therefor
    • B23C3/28Grooving workpieces
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23CMILLING
    • B23C2220/00Details of milling processes
    • B23C2220/60Roughing
    • B23C2220/605Roughing and finishing

Abstract

The invention provides a machining method of H-shaped thin-wall parts. The machining method includes selecting tri-blade taper-shank rough-machining milling cutters and fine-machining milling cutters according to groove depth, part height and groove width of H-shaped thin-wall parts to be machined, wherein the diameter of the milling cutters ranges from one second of the groove width to the groove width minus two, and roughness of the grinding positions of cutting edges of the fine-machining milling cutters is not higher than Ra 0.4; setting groove depth, groove width and three to eight layers of rough-machining layers on a numerical-control machine tool, setting the thickness of the rough-machining layers at 2-3 millimeters and the fine-machining allowance at 0.5-1 millimeters; setting linear speed and cutting feed of rotation of a spindle of the numerical-control machine tool, wherein linear speed and cutting feed of rough machining are 200-230 m/min and 70-74 mm/min respectively, and those of fine machining are 305-370 m/min and 100/115 mm/min respectively. By the machining method of the H-shaped thin-wall parts, machining procedures of parts are simplified.

Description

The processing method of I shape thin-walled parts
Technical field
The present invention relates to a kind of processing method of I shape thin-walled parts, belong to field of mechanical technique.
Background technology
Along with Machine Design industry requires to improve constantly to properties of product, the total class of thin-walled parts quantity increases a kind of trend becoming machine industry gradually, to the crudy of thin-walled parts and required precision also more and more higher.As I shape thin-walled parts, part base is all thin-walled, the clamping thin-walled bases such as soft pawl conventional during milling or vice, and add man-hour thin-walled parts and be easily out of shape, the part quality of processing is unstable; Next is that part handling are wasted time and energy, and procedure of processing is loaded down with trivial details, and working (machining) efficiency is low; Thirdly that this kind of part requirements of handling has skilled professional skill.This, with regard to needing a kind of good processing method to improve the processing technology of this kind of part, improves its crudy and efficiency.
Summary of the invention
For overcoming the defect of prior art, the invention provides a kind of processing method of I shape thin-walled parts.
Technical scheme of the present invention is: a kind of processing method of I shape thin-walled parts, a, selection cutter: according to groove depth (C), part high (H), the groove width (W) of the I shape thin-walled parts that will process, milling cutter diameter is the 1/2 ~ groove width (W)-2 of groove width (W), select spear-point drill handle heavy-duty cutter and finishing cutter, its cutting edge grinding place roughness of finishing cutter is not more than Ra0.4;
B, the groove depth (C) that Digit Control Machine Tool sets part, groove width (W), the roughing number of plies 3 ~ 8 layers, the allowance for finish of roughing layer thickness 2 ~ 3 millimeters and 0.5 ~ 1 millimeter;
The linear velocity that c, setting main shaft of numerical control machine tool rotate and cutting feeding, rough machined linear velocity and cutting feeding are respectively 200 ~ 230m/min, 70 ~ 74mm/min, and accurately machined linear velocity and cutting feeding are respectively 305 ~ 370m/min, 100 ~ 115mm/min;
D, parts fixation: the blank end face of two parts is close to composition blank assembly to end face, a cushion block is placed between two jaws of vice, blank assembly is placed on cushion block, the height of adjustment cushion block, it is high that blank assembly exceeds vice jaw upper surface 1/4 part, rotates and tighten the two jaw clamping blank assemblies that screw rod makes vice;
E, there is the vice of blank assembly to be placed on the workbench of Digit Control Machine Tool clamping, adjust the position of heavy-duty cutter and blank assembly, make the blade of heavy-duty cutter aim at the cutting starting point of blank assembly, vice is fixed tightly on the workbench of Digit Control Machine Tool;
F, roughing: start Digit Control Machine Tool, with the rough machined linear velocity 200 ~ 230m/min of setting, cut feeding 65 ~ 74mm/min, roughing layer thickness 2 ~ 3 millimeters and the roughing number of plies 4 ~ 7 layers, heavy-duty cutter is from one end feed of blank assembly until the other end of blank assembly, the milling cutter trend of initiating terminal got back to by backward feed again, roughing is carried out to blank assembly, repetition milling cutter moves towards, successively cut a to the last machined layer, roughing terminates, and bottom land and cell wall leave 0.5 ~ 1 millimeter of allowance for finish respectively;
G, fine finishining: take off heavy-duty cutter, finishing cutter is contained on knife rest, start Digit Control Machine Tool, with the accurately machined linear velocity 300 ~ 370m/min of setting and cutting feeding 100 ~ 115mm/min, finishing cutter from blank assembly one end along rough machined groove feed until the other end of blank assembly, reverse milling cutter trend of getting back to initiating terminal along rough machined groove feed again, carry out cutting fine finishining to rough machined bottom land and cell wall, when meeting the requirements of precision, fine finishining terminates;
Screw rod is tightened in h, rotation, unclamps two jaws of vice, takes off two the I shape thin-walled parts censorship processed, be up to the standards, the process finishing of part.
The processing method of this I shape thin-walled parts that the present invention relates to, adopt cushion block to support, vice clamps paired part, and part is easy to loading and unloading, processing technology is simple; Process with the direct clamping thin-walled base such as soft pawl or vice the thin-walled parts distortion caused when eliminating milling; Simplify the manufacturing procedure of part, paired processing, I shape thin-walled parts symmetry is good, low amount of feeding layered milling and rigidity installation way, reduce the vibration of cutter and part, improve crudy and the working (machining) efficiency of I shape thin-walled parts, reduce loss and the processing charges of cutter, be applicable to large-scale production and processing.
Detailed description of the invention
A processing method for I shape thin-walled parts, described processing method comprises the following steps:
A, selection cutter: according to groove depth (C), part high (H), the groove width (W) of the I shape thin-walled parts that will process, milling cutter diameter is the 1/2 ~ groove width (W)-2 of groove width (W), select spear-point drill handle heavy-duty cutter and finishing cutter, its cutting edge grinding place roughness of finishing cutter is not more than Ra0.4;
B, the groove depth (C) that Digit Control Machine Tool sets part, groove width (W), the roughing number of plies 3 ~ 8 layers, the allowance for finish of roughing layer thickness 2 ~ 3 millimeters and 0.5 ~ 1 millimeter;
The linear velocity that c, setting main shaft of numerical control machine tool rotate and cutting feeding, rough machined linear velocity and cutting feeding are respectively 200 ~ 230m/min, 70 ~ 74mm/min, and accurately machined linear velocity and cutting feeding are respectively 305 ~ 370m/min, 100 ~ 115mm/min;
D, parts fixation: the blank end face of two parts is close to composition blank assembly to end face, a cushion block is placed between two jaws of vice, blank assembly is placed on cushion block, the height of adjustment cushion block, it is high that blank assembly exceeds vice jaw upper surface 1/4 part, rotates and tighten the two jaw clamping blank assemblies that screw rod makes vice;
E, there is the vice of blank assembly to be placed on the workbench of Digit Control Machine Tool clamping, adjust the position of heavy-duty cutter and blank assembly, make the blade of heavy-duty cutter aim at the cutting starting point of blank assembly, vice is fixed tightly on the workbench of Digit Control Machine Tool;
F, roughing: start Digit Control Machine Tool, with the rough machined linear velocity 200 ~ 230m/min of setting, cut feeding 65 ~ 74mm/min, roughing layer thickness 2 ~ 3 millimeters and the roughing number of plies 4 ~ 7 layers, heavy-duty cutter is from one end feed of blank assembly until the other end of blank assembly, the milling cutter trend of initiating terminal got back to by backward feed again, roughing is carried out to blank assembly, repetition milling cutter moves towards, successively cut a to the last machined layer, roughing terminates, and bottom land and cell wall leave 0.5 ~ 1 millimeter of allowance for finish respectively;
G, fine finishining: take off heavy-duty cutter, finishing cutter is contained on knife rest, start Digit Control Machine Tool, with the accurately machined linear velocity 300 ~ 370m/min of setting and cutting feeding 100 ~ 115mm/min, finishing cutter from blank assembly one end along rough machined groove feed until the other end of blank assembly, reverse milling cutter trend of getting back to initiating terminal along rough machined groove feed again, carry out cutting fine finishining to rough machined bottom land and cell wall, when meeting the requirements of precision, fine finishining terminates;
Screw rod is tightened in h, rotation, unclamps two jaws of vice, takes off two the I shape thin-walled parts censorship processed, be up to the standards, the process finishing of part.
The processing method of this I shape thin-walled parts that the present invention relates to, adopt cushion block to support, vice clamps paired part, and part is easy to loading and unloading, processing technology is simple; Process with the direct clamping thin-walled base such as soft pawl or vice the thin-walled parts distortion caused when eliminating milling; Simplify the manufacturing procedure of part, paired processing, I shape thin-walled parts symmetry is good, low amount of feeding layered milling and rigidity installation way, reduce the vibration of cutter and part, improve crudy and the working (machining) efficiency of I shape thin-walled parts, reduce loss and the processing charges of cutter, be applicable to large-scale production and processing.

Claims (1)

1. a processing method for I shape thin-walled parts, is characterized in that: described processing method comprises the following steps:
A, selection cutter: according to groove depth (C), part high (H), the groove width (W) of the I shape thin-walled parts that will process, milling cutter diameter is the 1/2 ~ groove width (W)-2 of groove width (W), select spear-point drill handle heavy-duty cutter and finishing cutter, its cutting edge grinding place roughness of finishing cutter is not more than Ra0.4;
B, the groove depth (C) that Digit Control Machine Tool sets part, groove width (W), the roughing number of plies 3 ~ 8 layers, the allowance for finish of roughing layer thickness 2 ~ 3 millimeters and 0.5 ~ 1 millimeter;
The linear velocity that c, setting main shaft of numerical control machine tool rotate and cutting feeding, rough machined linear velocity and cutting feeding are respectively 200 ~ 230m/min, 70 ~ 74mm/min, and accurately machined linear velocity and cutting feeding are respectively 305 ~ 370m/min, 100 ~ 115mm/min;
D, parts fixation: the blank end face of two parts is close to composition blank assembly to end face, a cushion block is placed between two jaws of vice, blank assembly is placed on cushion block, the height of adjustment cushion block, it is high that blank assembly exceeds vice jaw upper surface 1/4 part, rotates and tighten the two jaw clamping blank assemblies that screw rod makes vice;
E, there is the vice of blank assembly to be placed on the workbench of Digit Control Machine Tool clamping, adjust the position of heavy-duty cutter and blank assembly, make the blade of heavy-duty cutter aim at the cutting starting point of blank assembly, vice is fixed tightly on the workbench of Digit Control Machine Tool;
F, roughing: start Digit Control Machine Tool, with the rough machined linear velocity 200 ~ 230m/min of setting, cut feeding 65 ~ 74mm/min, roughing layer thickness 2 ~ 3 millimeters and the roughing number of plies 4 ~ 7 layers, heavy-duty cutter is from one end feed of blank assembly until the other end of blank assembly, the milling cutter trend of initiating terminal got back to by backward feed again, roughing is carried out to blank assembly, repetition milling cutter moves towards, successively cut a to the last machined layer, roughing terminates, and bottom land and cell wall leave 0.5 ~ 1 millimeter of allowance for finish respectively;
G, fine finishining: take off heavy-duty cutter, finishing cutter is contained on knife rest, start Digit Control Machine Tool, with the accurately machined linear velocity 300 ~ 370m/min of setting and cutting feeding 100 ~ 115mm/min, finishing cutter from blank assembly one end along rough machined groove feed until the other end of blank assembly, reverse milling cutter trend of getting back to initiating terminal along rough machined groove feed again, carry out cutting fine finishining to rough machined bottom land and cell wall, when meeting the requirements of precision, fine finishining terminates;
Screw rod is tightened in h, rotation, unclamps two jaws of vice, takes off two the I shape thin-walled parts censorship processed, be up to the standards, the process finishing of part.
CN201510223017.8A 2015-05-05 2015-05-05 Machining method of H-shaped thin-wall parts Pending CN104841990A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107971534A (en) * 2017-11-24 2018-05-01 中国航发沈阳黎明航空发动机有限责任公司 A kind of processing method of circumference high-efficient milling Deformation control
CN108067664A (en) * 2017-12-19 2018-05-25 中国航发湖南南方宇航工业有限公司 A kind of milling plane processing method
CN108941684A (en) * 2018-08-31 2018-12-07 武汉船用机械有限责任公司 A kind of processing method of the kidney-shaped skewed slot of annular thin-wall parts

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1562542A (en) * 2004-03-31 2005-01-12 沈阳工业学院 Fast automatic processing method utilized in lathe and milling machine for large thin wall part with cylindrical grids
CN101602122A (en) * 2009-07-15 2009-12-16 天津商业大学 A kind of precision numerical control milling method for thin-wall parts
JP2012213836A (en) * 2011-03-31 2012-11-08 Mitsubishi Heavy Ind Ltd Vacuum suction type support jig, machining method of plate-shaped workpiece using the jig, and machined workpiece
CN104493274A (en) * 2014-12-24 2015-04-08 王友群 Formed milling cutter and milling forming method using same
CN104526030A (en) * 2014-12-08 2015-04-22 湖南南方宇航工业有限公司 Processing method for T-shaped thin-walled parts

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1562542A (en) * 2004-03-31 2005-01-12 沈阳工业学院 Fast automatic processing method utilized in lathe and milling machine for large thin wall part with cylindrical grids
CN101602122A (en) * 2009-07-15 2009-12-16 天津商业大学 A kind of precision numerical control milling method for thin-wall parts
JP2012213836A (en) * 2011-03-31 2012-11-08 Mitsubishi Heavy Ind Ltd Vacuum suction type support jig, machining method of plate-shaped workpiece using the jig, and machined workpiece
CN104526030A (en) * 2014-12-08 2015-04-22 湖南南方宇航工业有限公司 Processing method for T-shaped thin-walled parts
CN104493274A (en) * 2014-12-24 2015-04-08 王友群 Formed milling cutter and milling forming method using same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107971534A (en) * 2017-11-24 2018-05-01 中国航发沈阳黎明航空发动机有限责任公司 A kind of processing method of circumference high-efficient milling Deformation control
CN107971534B (en) * 2017-11-24 2019-03-22 中国航发沈阳黎明航空发动机有限责任公司 A kind of processing method of circumference high-efficient milling Deformation control
CN108067664A (en) * 2017-12-19 2018-05-25 中国航发湖南南方宇航工业有限公司 A kind of milling plane processing method
CN108067664B (en) * 2017-12-19 2019-04-02 中国航发湖南南方宇航工业有限公司 A kind of milling plane processing method
CN108941684A (en) * 2018-08-31 2018-12-07 武汉船用机械有限责任公司 A kind of processing method of the kidney-shaped skewed slot of annular thin-wall parts

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Application publication date: 20150819