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Whole worm machining process

A processing technology, worm technology, applied in the direction of worm, elements with teeth, belt/chain/gear, etc., can solve the problems of low transmission efficiency, low efficiency and high cost

Inactive Publication Date: 2018-12-04
合肥银泉铸造有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The worm gear and worm mechanism are often used in the occasions where the two shafts are interlaced, the transmission ratio is large, the transmission power is not large, or the gap is working. The existing worm gear transmission has low efficiency and serious wear. The relative sliding speed is large, so the friction loss is large and the efficiency is low; on the other hand, the relative sliding speed makes the tooth surface wear seriously, and the heat is serious. In order to dissipate heat and reduce wear, the commonly used expensive ones have better wear reduction and wear resistance. The material and good lubrication device, so the cost is higher, and the corrosion resistance is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] A kind of overall worm machining process, comprising steps:

[0063] 1) Billet making and forging;

[0064] 2) Annealing

[0065] 600℃, keep warm for 3h;

[0066] 3) Rough car;

[0067] 4) Normalizing

[0068] Heat the whole worm workpiece to 1200°C and keep it warm for 3h;

[0069] 5) Semi-finishing outer circle and spiral surface

[0070] Leave a margin of 0.15mm;

[0071] 6) Pliers, remove the flat thorns at the part of the tail of the whole screw thread that is less than 1 / 3 of the tooth thickness;

[0072] 7) Carburizing

[0073] Carburizing depth 1mm, vibration <0.15;

[0074] 8) Finishing the outer circle;

[0075] 9) Quenching and tempering;

[0076] 10) Grinding the center hole;

[0077] 11) car fastening thread;

[0078] 12) Slot milling;

[0079] 13) Semi-finishing the outer circle;

[0080] 14) Semi-finishing helicoid;

[0081] 15) Grinding the center hole;

[0082] 16) Fine grinding the outer ring and end face;

[0083] 17) Grinding spiral ...

Embodiment 2

[0090] A kind of overall worm machining process, comprising steps:

[0091] 1) Billet making and forging;

[0092] 2) Annealing

[0093] 650℃, keep warm for 2.5h;

[0094] 3) Rough car;

[0095] 4) Normalizing

[0096] Heat the whole worm workpiece to 1300°C and keep it warm for 2.5h;

[0097] 5) Semi-finishing outer circle and spiral surface

[0098] The average margin is 0.18mm;

[0099] 6) Pliers, remove the flat thorns at the part of the tail of the whole screw thread that is less than 1 / 3 of the tooth thickness;

[0100] 7) Carburizing

[0101] Carburizing depth 1.1mm, runout <0.15;

[0102] 8) Finishing the outer circle;

[0103] 9) Quenching and tempering;

[0104] 10) Grinding the center hole;

[0105] 11) car fastening thread;

[0106] 12) Slot milling;

[0107] 13) Semi-finishing the outer circle;

[0108] 14) Semi-finishing helicoid;

[0109] 15) Grinding the center hole;

[0110] 16) Fine grinding the outer ring and end face;

[0111] 17) Grinding sp...

Embodiment 3

[0118] A kind of overall worm machining process, comprising steps:

[0119] 1) Billet making and forging;

[0120] 2) Annealing

[0121] 700℃, keep warm for 2h;

[0122] 3) Rough car;

[0123] 4) Normalizing

[0124] Heat the whole worm workpiece to 1400°C and keep it warm for 2h;

[0125] 5) Semi-finishing outer circle and spiral surface

[0126] Leave a margin of 0.2mm;

[0127] 6) Pliers, remove the flat thorns at the part of the tail of the whole screw thread that is less than 1 / 3 of the tooth thickness;

[0128] 7) Carburizing

[0129] Carburizing depth 1.2mm, runout <0.15;

[0130] 8) Finishing the outer circle;

[0131] 9) Quenching and tempering;

[0132] 10) Grinding the center hole;

[0133] 11) car fastening thread;

[0134] 12) Slot milling;

[0135] 13) Semi-finishing the outer circle;

[0136] 14) Semi-finishing helicoid;

[0137] 15) Grinding the center hole;

[0138] 16) Fine grinding the outer ring and end face;

[0139] 17) Grinding spiral su...

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PUM

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Abstract

The invention discloses a whole worm machining process. The whole worm machining process includes the steps of (1) blank making and forging; (2) annealing, wherein temperature is 600-700 DEG C, and heat preserving is performed for 2-3 h; (3) rough turning; (4) normalizing, wherein a whole worm workpiece is heated to 1200-1400 DEG C, and heat preserving is performed for 2-3 h; (5) half finish turning of an outer circle and a spiral face, wherein allowance of 0.15 mm to 0.2 mm is reserved; (6) plier treatment is performed, incomplete whole teeth of the thread tail portion of a whole screw is smaller than the 1 / 3 tooth thickness portion, and flat burrs are removed; (7) carburizing, wherein the carburizing depth is 1mm to 1.2 mm, and the runout < 0.15; (8) finish turning of the outer circle; (9) quenching and tempering; (10) grinding of a center hole; (11) turning of a fastening thread; (12) groove milling; (13) half finish grinding of the outer circle: (14) half finish grinding of the spiral face; (15) grinding of a center hole; (16) finish grinding of the outer circle and end faces; (17) finish grinding of the spiral face; and (18) phosphating. Machining is simple, the production cost is low, the transmission rate is high, and the corrosion resistant performance is good.

Description

technical field [0001] The invention belongs to the technical field of mechanical technology, and in particular relates to an integral worm processing technology. Background technique [0002] Worm gears are commonly used to transmit motion and power between two interleaved shafts. The worm gear and the worm are equivalent to the gear and the rack in their middle plane, and the worm is similar in shape to the worm. The worm gear and worm mechanism are often used in the occasions where the two shafts are interlaced, the transmission ratio is large, the transmission power is not large, or the gap is working. The existing worm gear transmission has low efficiency and serious wear. The relative sliding speed is large, so the friction loss is large and the efficiency is low; on the other hand, the relative sliding speed makes the tooth surface wear seriously, and the heat is serious. In order to dissipate heat and reduce wear, the commonly used expensive ones have better wear re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23F13/00
CPCB23F13/00
Inventor 朱晓林
Owner 合肥银泉铸造有限责任公司
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