CN111687755B - Method for setting shot blasting conditions - Google Patents
Method for setting shot blasting conditions Download PDFInfo
- Publication number
- CN111687755B CN111687755B CN202010008721.2A CN202010008721A CN111687755B CN 111687755 B CN111687755 B CN 111687755B CN 202010008721 A CN202010008721 A CN 202010008721A CN 111687755 B CN111687755 B CN 111687755B
- Authority
- CN
- China
- Prior art keywords
- projection
- pressure
- projection material
- flow rate
- material flow
- Prior art date
- 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.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
- B24C1/10—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for compacting surfaces, e.g. shot-peening
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention provides a method for setting shot blasting conditions, which can stably apply target compressive residual stress to non-processed products. The method for setting the shot peening conditions of the present invention includes the steps of: measuring projection pressure, projection time and projection material flow rate aiming at each non-processed product and projection material; acquiring the characteristics of projection pressure, projection time and projection material flow rate aiming at each non-processed product and projection material; the projection pressure and the projection time are determined according to the characteristics of the non-processed product and the projection material to be used, and the optimum value of the projection material flow rate is calculated according to the characteristics of the projection material flow rate corresponding to the determined projection pressure and projection time.
Description
Technical Field
The present invention relates to a method for setting shot peening conditions.
Background
Documents of the prior art
Patent literature
Patent document 1: JP 2003-159651 publication
Problems to be solved by the invention
However, in the technique of patent document 1, when a target compressive residual stress is applied to the teeth of the gear or the spline by shot peening, the projection material ejected from the nozzle collides with the projection material reflected by the teeth in the vicinity of the tooth root, and thus the target compressive residual stress may not be applied.
Disclosure of Invention
The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a method for setting shot peening conditions, which can stably apply a target compressive residual stress to a non-processed product even if the product specifications are different.
Means for solving the problems
The method for setting the shot peening conditions of the present invention includes the steps of: measuring projection pressure, projection time and projection material flow rate aiming at each non-processed product and projection material; acquiring the characteristics of projection pressure, projection time and projection material flow rate aiming at each non-processed product and projection material; determining the projection pressure and the projection time according to the characteristics of the used non-processed product and the projection material, and calculating the optimal value of the projection material flow according to the characteristics of the projection material flow corresponding to the determined projection pressure and projection time.
Effects of the invention
Therefore, the method of setting the shot peening conditions of the present invention can stably apply the target compressive residual stress to the non-processed product.
Drawings
Fig. 1 is a diagram showing a configuration of a shot-peening machine according to embodiment 1.
Fig. 2 is a flowchart showing a measurement process in embodiment 1.
Fig. 3 is a flowchart showing the characteristic acquisition step in embodiment 1.
Fig. 4 is a flowchart showing a process of calculating an optimum projection flow rate according to embodiment 1.
Fig. 5 (a) shows characteristics of the projection pressure P and the compressive residual stress σ in embodiment 1, (b) shows characteristics of the projection time t and the compressive residual stress σ, and (c) shows characteristics of the projection material flow rate V and the compressive residual stress σ.
Description of the reference numerals
1 shot blasting machine (shot blasting machine)
Alpha projection material
P projection pressure
t time of projection
V projected material flow
Sigma compressive residual stress
σ a target compressive residual stress
W workpiece (non-treatment product)
Detailed Description
[ embodiment 1]
Fig. 1 is a diagram showing a configuration of a shot-peening machine according to embodiment 1, and the apparatus executes a method of setting shot-peening conditions according to the present invention.
[ Structure ]
The shot peening machine (shot peening apparatus) 1 includes: a projection material storage 2 that recovers and stores the projection material α; a pressurizing tank 4 that supplies the shots α from the shots reservoir 2 through the injection port 3; a projection material flow regulator 5 for regulating a projection material flow V as a target; a nozzle 13 for projecting the projection material α together with air a2 adjusted to a target projection pressure onto a workpiece (non-processed product) W such as a gear or a spline having a tooth shape for a target projection time t in the projection chamber 12; and a projection material recovery chamber 14 that recovers the projection material α to return to the projection material reservoir 2.
When the shots α are smaller than a predetermined particle size (i.e., worn), the shot container 2 feeds the worn shots α to the dust collector 15 and discards them.
The compressed air a supplied from the electric pump 6 is adjusted to a predetermined pressure by the flow meter 7 and the flow rate adjustment valve 8, and the air a1 having the predetermined pressure is supplied into the pressure tank 4, so that the shots α are sent from the pressure tank 4 to the shot flow rate adjuster 5 by the air a 1.
The shots α supplied from the shot flow rate adjuster 5 are supplied from the nozzle 13 together with the air a2 of the target shooting pressure P supplied from the pressure difference valve 10 for adjusting the shooting pressure P.
The pressure gauges 9, 11 are installed to confirm whether the pressure is adjusted to a prescribed pressure.
Fig. 2 is a flowchart showing a measurement process in embodiment 1.
In step S1, a plurality of workpieces W and a plurality of shots α having different particle diameters and hardness are selected.
When selecting a plurality of types of workpieces W, the plurality of types of workpieces W having different tooth shapes are selected according to the tooth height (distance between the tooth root and the tooth tip) and the modulus of the teeth of the gear or spline.
The shape of the teeth is roughly divided into a spline formed on the transmission shaft and an external gear such as a sun gear or a pinion gear of a planetary gear, and both are power transmission portions.
The splines are formed on the drive shaft by equally cutting a plurality of wedge-shaped peaks and valleys around the shaft, or by rolling or the like. Spline holes which are embedded with the bosses are cut on the bosses to transmit power. In addition, multiple teeth can share in transmitting a larger torque.
The sun gear and the pinion gear, which are the external teeth of the planetary gear, have different gear specifications such as module, tooth size such as tooth height, and pitch between teeth. The shot blasting operation moves in the tooth direction and rotates the shaft to perform shot blasting.
In addition, the projection range and the projection distance are different, and the projection material flow rate V needs to be measured and managed by experimental simulation in advance.
In step S2, a plurality of projection pressures P, projection times t, and projection material flow rates V are selected based on the application capability of the shot peening machine 1.
In step S3, the workpiece W is projected by combining the selected plurality of types of workpieces W with the projection material α, the projection pressure P, the projection time t, and the projection material flow rate V, and the compressive residual stress σ of the workpiece W is measured.
Fig. 3 is a flowchart showing the characteristic acquisition step in embodiment 1.
In step S11, the characteristics of the compressive residual stress σ measured by combining the selected plurality of types of workpieces W with the shots α, the shot pressure P, the shot time t, and the shot flow V are obtained.
Fig. 4 is a flowchart showing an optimum value calculating process of the projection flow rate according to embodiment 1.
In step S21, from the selected workpiece W and the projection material α, the projection pressure P and the projection time t that can achieve the target residual stress σ a are determined based on the characteristics of the projection pressure P and the projection time t of the workpiece W and the projection material α to be used, and the optimum value of the projection flow rate V that achieves the target residual stress σ a is calculated based on the characteristics of the projection flow rate V corresponding to the determined projection pressure P and projection time t.
Fig. 5 (a) shows characteristics of the projection pressure P and the compressive residual stress σ in embodiment 1, (b) shows characteristics of the projection time t and the compressive residual stress σ, and (c) shows characteristics of the projection material flow rate V and the compressive residual stress σ.
That is, each graph of fig. 5 shows characteristics of the workpiece W and the shots α to be used.
As the projection pressure P and the projection time t become larger, the compressive residual stress σ has a linear characteristic that rises proportionally.
The other workpieces W have the same characteristics as the projection material α.
Then, to achieve the target compressive residual stress σ a, the projection pressure P is determined to be 1MPa, and the projection time t is determined to be 15 seconds.
As shown in fig. 5 (c), the characteristic of the projection flow rate V corresponding to the determined projection pressure P and projection time t does not have a linear characteristic, and the projection flow rate V to which the compressive residual stress σ t exceeding the target compressive residual stress σ a is applied has a peak at 1.5 kg/min.
The other projection pressures P and projection times t have the same characteristics.
Therefore, the optimum value of the projected flow rate V is 1.5 kg/min.
Next, the operation and effect will be described.
The method of setting the shot peening conditions according to embodiment 1 achieves the following operational effects.
(1) The method comprises the following steps: measuring a projection pressure P, a projection time t and a projection material flow V for each workpiece W and the projection material alpha; acquiring characteristics of a projection pressure P, a projection time t and a projection material flow V for each of the work W and the projection material alpha; in order to achieve the target compressive residual stress σ a, an optimum value of the projection material flow rate V having a nonlinear characteristic is calculated from the characteristics of the workpiece and the projection material to be used, using the determined projection pressure P and the projection time t.
Thus, the optimum projection material flow rate V can be calculated, energy saving can be achieved, and the target compressive residual stress σ a can be stably obtained.
[ other embodiments ]
While the embodiments of the present invention have been described above based on the embodiments, the specific configurations of the present invention are not limited to those shown in the embodiments, and design changes and the like within a range not departing from the gist of the present invention are included in the present invention.
Claims (3)
1. A method for setting conditions for shot blasting in a shot blasting apparatus for performing shot blasting on a non-processed product having a tooth shape, the method comprising:
measuring the projection pressure, the projection time and the projection material flow rate aiming at each non-processed product and projection material;
acquiring the characteristics of the projection pressure, the projection time, the projection material flow and the compression residual stress aiming at each non-processed product and projection material;
and determining the projection pressure and the projection time according to the used non-processed product and the characteristics of the projection material, and calculating the optimal value of the projection material flow according to the characteristics of the projection material flow and the compressive residual stress corresponding to the determined projection pressure and projection time.
2. A method of setting conditions for shot blasting according to claim 1,
the projection material flow rate is managed according to the tooth shape.
3. A method of setting a blasting condition according to claim 2,
the tooth shape is set according to the tooth height and the modulus.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019-046107 | 2019-03-13 | ||
| JP2019046107A JP7271060B2 (en) | 2019-03-13 | 2019-03-13 | How to set shot peening conditions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111687755A CN111687755A (en) | 2020-09-22 |
| CN111687755B true CN111687755B (en) | 2022-05-27 |
Family
ID=72431294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010008721.2A Active CN111687755B (en) | 2019-03-13 | 2020-01-06 | Method for setting shot blasting conditions |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7271060B2 (en) |
| CN (1) | CN111687755B (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8324553D0 (en) * | 1983-09-14 | 1983-10-19 | Btr Plc | Monitoring flow of particulate material in impact treatment equipment |
| CA2069189C (en) * | 1991-08-12 | 1998-04-14 | Aerostructures Corporation | Method of developing complex tool shapes |
| JP2000280120A (en) | 1999-03-26 | 2000-10-10 | Shigeru Hoyashita | Manufacture of gear |
| JP2003159651A (en) | 2001-11-22 | 2003-06-03 | Sintokogio Ltd | Method for setting shot peening condition and shot peening machine |
| JP4729282B2 (en) * | 2004-09-29 | 2011-07-20 | 日立Ｇｅニュークリア・エナジー株式会社 | Method and apparatus for improving residual stress by water jet peening for pipe inner surface |
| CN1285751C (en) * | 2005-03-22 | 2006-11-22 | 天津大学 | Method for enhancing performance of tungsten carbide base carbide alloy by liquid shot blasting |
| JP5072885B2 (en) | 2009-03-04 | 2012-11-14 | 三菱重工業株式会社 | How to set shot peening conditions |
| JP2013220509A (en) | 2012-04-17 | 2013-10-28 | Daido Steel Co Ltd | Shot peening method and gear material using the same |
| CN102642177A (en) * | 2012-05-04 | 2012-08-22 | 大连理工大学 | Processing method of alloy surface micro-cracks |
| CN105619258B (en) * | 2016-01-11 | 2018-07-03 | 无锡透平叶片有限公司 | A kind of bead method for solving the deformation of blade shot-peening |
-
2019
- 2019-03-13 JP JP2019046107A patent/JP7271060B2/en active Active
-
2020
- 2020-01-06 CN CN202010008721.2A patent/CN111687755B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111687755A (en) | 2020-09-22 |
| JP7271060B2 (en) | 2023-05-11 |
| JP2020146797A (en) | 2020-09-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8684790B2 (en) | Method and arrangement for maintenance of gas-turbine blades | |
| CA2671684C (en) | Peening apparatus and method | |
| CN111687755B (en) | Method for setting shot blasting conditions | |
| US9539690B2 (en) | Control feedback loop for real-time variable needle peen forming | |
| CN110082559B (en) | Speed measuring device and speed measuring method in shot blasting process | |
| CN104060062A (en) | Gear tooth surface shot peening device and method | |
| CN106863019B (en) | A kind of preparation method of the efficient low-stress grinding technological parameter of unimach | |
| CN107900622A (en) | A kind of band coating casing processing method of thin-walled | |
| CN106628129A (en) | Full-pressure regulation type braking control method for aircraft anti-skid braking system | |
| CN105441862A (en) | Size repairing technique for high-pressure zero-level stator inner ring | |
| CN204295060U (en) | A kind of numerical control tape saw blade fit machine | |
| CN106964849A (en) | The processing method of contour spiral bevel gear tooth top chamfered edge | |
| CN106289024A (en) | A kind of method measuring the actual end clearance of enclosed gear pump | |
| US20100050406A1 (en) | System and method for sealing vacuum in hollow fan blades | |
| CN105619258B (en) | A kind of bead method for solving the deformation of blade shot-peening | |
| CN210633613U (en) | Driving mechanism of nailing gun | |
| CN110744000B (en) | Method for monitoring service life of self-punching riveting die of steel-aluminum hybrid vehicle body based on riveting curve | |
| US20230144890A1 (en) | Cutting tool head | |
| US20190009396A1 (en) | Method and drive-out device for driving out a blade | |
| GB2459653A (en) | Manufacture of an article by hot isostatic pressing | |
| CN112796874B (en) | Stepless pressure regulating method for turbocharger actuator | |
| Stevanus et al. | Pressure pattern improvement of proportional valve application on hot press machine using PID | |
| CN207465088U (en) | Hydraulic spanner operation automatic inspection system | |
| CN110076273A (en) | A kind of larger ratio of height to diameter angular wheel shaft shaping dies and manufacturing process | |
| CN211397802U (en) | Air compressor capable of preventing overcharging |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |