CN105171618B - Sand-blasting deburring technology and sand-blasting deburring system - Google Patents

Sand-blasting deburring technology and sand-blasting deburring system Download PDF

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Publication number
CN105171618B
CN105171618B CN201510642593.6A CN201510642593A CN105171618B CN 105171618 B CN105171618 B CN 105171618B CN 201510642593 A CN201510642593 A CN 201510642593A CN 105171618 B CN105171618 B CN 105171618B
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sand
workpiece
spray gun
pressure spray
soft
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CN105171618A (en
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任项生
罗卫强
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Guangdong Tianji Intelligent System Co ltd
Guangdong Evenwin Precision Technology Co Ltd
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Guangdong Tianji Industrial Intelligent System Co Ltd
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Abstract

The invention discloses a sand-blasting deburring technology and a sand-blasting deburring system. The sand-blasting deburring technology comprises the following steps that a workpiece to be treated is provided; and soft sand is sprayed on the workpiece through a high-pressure spray gun, the workpiece is taken out after spraying lasts for 2s-10s, and the sand-blasting deburring technology is completed, wherein the spray air pressure of the high-pressure spray gun is 1.5 kg/cm<2>-4 kg/cm<2>, nylon sand or plastic sand is adopted as the soft sand, and the particle size of the soft sand is 0.3 mm-0.5 mm. According to the sand-blasting deburring technology, the soft sand is sprayed on the protected workpiece through the high-pressure spray gun to complete removal of burrs in the workpiece. Compared with a traditional manual deburring method, the sand-blasting deburring technology is high in processing efficiency, and the surface of the workpiece cannot be scratched by the soft sand.

Description

Sandblasting debarring process and sandblasting deburring system
Technical field
The present invention relates to the middle plate of mobile terminal device or the manufacture field of base plate, more particularly to a kind of sandblasting deburring Technique and sandblasting deburring system.
Background technology
At present, the preparation processing of the middle plate of mobile terminal device (for example, mobile phone, panel computer) or base plate generally adopts Cnc (computer numerical control, computer digital control machine tool) is completing.Cnc machine tool control system logic Ground is processed has control coding or other symbolic instruction regulated procedures, is decoded by computer, so that cnc lathe is held Blank is processed into finished workpart part by Tool in Cutting by the action that professional etiquette is reserved.
In the middle plate of mobile terminal device (for example, mobile phone, panel computer) or the cnc process of base plate, due to knife Tool cutting blank can produce various burrs, so that increasing debarring process.Traditional debarring process is by manually making Complete the removal of burr with instruments such as file, blades.However, artificial debarring process is less efficient, burr remove thorough, And easily the surface of workpiece is caused to scratch during deburring.
Content of the invention
Based on this it is necessary to provide a kind of working (machining) efficiency higher and sandblasting debarring process that is being not likely to produce scuffing and spray Sand deburring system.
A kind of sandblasting debarring process, comprises the steps:
Pending workpiece is provided;And
Using high-pressure spray gun, soft sand blasting is mapped on described workpiece, after sustained firing 2s~10s, takes out described workpiece, complete Become described sandblasting debarring process, wherein, the injection air pressure of described high-pressure spray gun is 2kg/cm2~3kg/cm2, described soft sand For nylon sand or plastic cement sand, the particle diameter of described soft sand is 0.35mm~0.45mm;Described employing high-pressure spray gun is by soft sand blasting It is mapped in the operation on the described workpiece completing to protect, described high-pressure spray gun is oscillated with the frequency of 0~50hz.
In one embodiment, described workpiece is middle plate or the base plate of mobile terminal device.
In one embodiment, it is additionally included in and using high-pressure spray gun, soft sand blasting is mapped on the described workpiece completing to protect Before, the operation appearance of described workpiece protected.
In one embodiment, the operation appearance of described workpiece protected is: using flexible protective casing to institute The appearance stating workpiece is coated.
A kind of sandblasting deburring system, comprising:
Pre- protection device, for protecting to the appearance of pending workpiece;
Sand blasting unit, including high-pressure spray gun, described high-pressure spray gun is used for being mapped to soft sand blasting the described work completing to protect On part, wherein, the injection air pressure of described high-pressure spray gun is 2kg/cm2~3kg/cm2, described soft sand is nylon sand or plastic cement sand, The particle diameter of described soft sand is 0.35mm~0.45mm;And
Charging/discharging device, for sending into the described workpiece completing to protect and transporting described sand blasting unit;Described input and output material Device includes conveyer belt, and described conveyer belt is used for controlling the time of staying in described sand blasting unit for the described workpiece completing to protect For 2s~10s;In the described operation using high-pressure spray gun, soft sand blasting being mapped on the described workpiece completing to protect, described high pressure Spray gun is oscillated with the frequency of 0~50hz.
In one embodiment, described pre- protection device includes flexible protective casing, and described flexible protective casing is used for described The appearance of workpiece is coated;
This sandblasting debarring process, complete on the workpiece completing to protect by being mapped to soft sand blasting using high-pressure spray gun The burr in workpiece is become to remove.With respect to the method for traditional artificial deburring, working (machining) efficiency is higher, and soft sand will not be right The surface of workpiece causes to scratch.
Brief description
Fig. 1 is the flow chart of the sandblasting debarring process of an embodiment;
Fig. 2 is the structural representation of the flexible protective casing of an embodiment;
Fig. 3 is the schematic diagram of the sandblasting deburring system of an embodiment.
Specific embodiment
Understandable for enabling the above objects, features and advantages of the present invention to become apparent from, below in conjunction with the accompanying drawings to the present invention Specific embodiment be described in detail.Elaborate a lot of details in order to fully understand this in the following description Bright.But the present invention can be much to implement different from alternate manner described here, and those skilled in the art can be not Similar improvement is done, therefore the present invention is not embodied as being limited by following public in the case of running counter to intension of the present invention.
The sandblasting debarring process of an embodiment as shown in Figure 1, comprises the steps:
The pending workpiece of s10, offer.
Workpiece can be middle plate or the base plate of mobile terminal device.
Workpiece is usually in cnc processing, is processed blank by Tool in Cutting and is formed, thus can be in workpiece by Tool in Cutting Position form a large amount of burrs.
S20, using high-pressure spray gun, soft sand blasting is mapped on the workpiece that s10 obtains, after sustained firing 2s~10s, takes out work Part, completes sandblasting debarring process.
Preferably, the time of the sustained firing of high-pressure spray gun is 3s.
In s20, the injection air pressure of high-pressure spray gun is 1.5kg/cm2~4kg/cm2, soft sand can be nylon sand or plastic cement Sand, the particle diameter of soft sand can be 0.3mm~0.5mm.
In one preferred embodiment, the injection air pressure of high-pressure spray gun can be 2kg/cm2~3kg/cm2.Especially , the injection air pressure of high-pressure spray gun can be 2.5kg/cm2.
In one preferred embodiment, the particle diameter of soft sand can be 0.35mm~0.45mm.Particularly, soft sand Particle diameter be 0.4mm.
In s20, using high-pressure spray gun, soft sand blasting is mapped in the operation on the workpiece completing to protect, high-pressure spray gun is with 0 The frequency of~50hz oscillates.High-pressure spray gun oscillated with the frequency of 0~50hz it is ensured that the various pieces of workpiece all The soft sand that can be sprayed by high-pressure spray gun impacts.
In a preferred embodiment, this sandblasting debarring process is additionally included in soft sand blasting using high-pressure spray gun Before being mapped on the workpiece completing to protect, operation that the appearance of workpiece is protected.Due to workpiece appearance often Require higher it is impossible to enough there be any fine scratches, therefore, when carrying out sandblasting debarring process, generally require outer to workpiece Sight face is protected.
The operation that the appearance of workpiece is protected can be: using flexible protective casing, the appearance of workpiece is wrapped Cover.
In conjunction with Fig. 2, the flexible protective casing 100 of an embodiment is simply introduced.In Fig. 2, workpiece 200 is mobile whole Plate in end equipment, flexible protective casing 100 is protected to the appearance of workpiece 200.
Flexible protective casing 100 include strip flexible body 110 and respectively from two long sides of flexible body 110 to Equidirectional bending extends the first limit body 120 being formed and the second limit body 130.First limit body 120 and the second limit body The plane that 130 bearing of trend is located with flexible body 110 is vertical.
First limit body 120 surface relative with the second limit body 130 is the first inclined-plane 122, the first inclined-plane 122 with flexible The angle of body 110 place plane is 65 °~85 °.Preferably, the angle of the first inclined-plane 122 and flexible body 110 place plane For 70 °~80 °.Particularly, the first inclined-plane 122 and the angle of flexible body 110 place plane are 75 °.
Second limit body 130 surface relative with the first limit body 120 is the second inclined-plane 132, the second inclined-plane 132 with flexible The angle of body 110 place plane is 65 °~85 °.Preferably, the angle of the second inclined-plane 132 and flexible body 110 place plane For 70 °~80 °.Particularly, the second inclined-plane 132 and the angle of flexible body 110 place plane are 75 °.
The section of flexible body 110, the first limit body 120 and the second limit body 130 surrounds an isosceles trapezoid cavity, the One inclined-plane 132 falls in ladder cavity away from the projection in flexible body 110 for the one end of flexible body 110, the second inclined-plane 132 Projection in flexible body 110 for the one end away from flexible body 110 also falls in ladder cavity.
This flexible protective casing 100 is used for protecting the appearance of workpiece 200, and specifically, this flexible protective casing 100 is used Frame in protection workpiece 200.Before soft sand blasting being mapped to using high-pressure spray gun on the workpiece completing to protect, directly will be soft Property protective case 100 is expressed on the frame of plate 200 in mobile terminal device;After the completion for the treatment of high-pressure spray gun injection, by flexible protective Set 100 goes down, you can.
This sandblasting debarring process, complete on the workpiece completing to protect by being mapped to soft sand blasting using high-pressure spray gun The burr in workpiece is become to remove.With respect to the method for traditional artificial deburring, working (machining) efficiency is higher, and soft sand will not be right The surface of workpiece causes to scratch.
In the present invention, what inventor was creative is applied to underturner by the blasting craft being applied to surface polishing Skill, by the improvement to process conditions, sandblasting material and sandblasting particle diameter, having obtained the present invention needs sandblasting deburring to be protected Technique.
The sandblasting deburring system of an as shown in Figure 3 embodiment, including pre- protection device 12, sand blasting unit 14 and Charging/discharging device 16.
Pre- protection device 12 is used for the appearance of pending workpiece is protected.
Workpiece is generally middle plate or the base plate of mobile terminal device.
Preferably, pre- protection device 12 includes flexible protective casing, and flexible protective casing is used for the appearance of workpiece is wrapped Cover.
In conjunction with Fig. 2, the flexible protective casing 100 of an embodiment is simply introduced.In Fig. 2, workpiece 200 is mobile whole Plate in end equipment, flexible protective casing 100 is protected to the appearance of workpiece 200.
Flexible protective casing 100 include strip flexible body 110 and respectively from two long sides of flexible body 110 to Equidirectional bending extends the first limit body 120 being formed and the second limit body 130.First limit body 120 and the second limit body The plane that 130 bearing of trend is located with flexible body 110 is vertical.
First limit body 120 surface relative with the second limit body 130 is the first inclined-plane 122, the first inclined-plane 122 with flexible The angle of body 110 place plane is 65 °~85 °.Preferably, the angle of the first inclined-plane 122 and flexible body 110 place plane For 70 °~80 °.Particularly, the first inclined-plane 122 and the angle of flexible body 110 place plane are 75 °.
Second limit body 130 surface relative with the first limit body 120 is the second inclined-plane 132, the second inclined-plane 132 with flexible The angle of body 110 place plane is 65 °~85 °.Preferably, the angle of the second inclined-plane 132 and flexible body 110 place plane For 70 °~80 °.Particularly, the second inclined-plane 132 and the angle of flexible body 110 place plane are 75 °.
The section of flexible body 110, the first limit body 120 and the second limit body 130 surrounds an isosceles trapezoid cavity, the One inclined-plane 132 falls in ladder cavity away from the projection in flexible body 110 for the one end of flexible body 110, the second inclined-plane 132 Projection in flexible body 110 for the one end away from flexible body 110 also falls in ladder cavity.
This flexible protective casing 100 is used for protecting the appearance of workpiece 200, and specifically, this flexible protective casing 100 is used Frame in protection workpiece 200.
Sand blasting unit 14 includes high-pressure spray gun.High-pressure spray gun is used for being mapped to soft sand blasting the workpiece completing to protect.
The injection air pressure of high-pressure spray gun is 1.5kg/cm2~4kg/cm2, soft sand can be nylon sand or plastic cement sand, soft The particle diameter of sand can be 0.3mm~0.5mm.
In one preferred embodiment, the injection air pressure of high-pressure spray gun can be 2kg/cm2~3kg/cm2.Especially , the injection air pressure of high-pressure spray gun can be 2.5kg/cm2.
In one preferred embodiment, the particle diameter of soft sand can be 0.35mm~0.45mm.Particularly, soft sand Particle diameter be 0.4mm.
Preferably, high-pressure spray gun is oscillated with the frequency of 0~50hz.High-pressure spray gun is shaken back and forth with the frequency of 0~50hz Pendulum is it is ensured that the soft sand that the various pieces of workpiece can be sprayed by high-pressure spray gun impacts.
Charging/discharging device 16 is used for sending into the workpiece completing to protect and transports sand blasting unit 14.
Charging/discharging device 16 includes conveyer belt.Conveyer belt is used for controlling workpiece the stopping in sand blasting unit 14 completing to protect The time is stayed to be 2s~10s.
Preferably, conveyer belt controls the time of staying in sand blasting unit 14 for the workpiece completing to protect is 3s.
Soft sand blasting is mapped to the work completing to protect by the sand blasting unit 14 of this sandblasting deburring system by high-pressure spray gun The burr to complete on part in workpiece removes.With respect to the method for traditional artificial deburring, this sandblasting deburring system Working (machining) efficiency is higher, and soft sand will not cause to the surface of workpiece to scratch.
Embodiment described above only have expressed the several embodiments of the present invention, and its description is more concrete and detailed, but simultaneously Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for those of ordinary skill in the art For, without departing from the inventive concept of the premise, some deformation can also be made and improve, these broadly fall into the guarantor of the present invention Shield scope.Therefore, the protection domain of patent of the present invention should be defined by claims.

Claims (6)

1. a kind of sandblasting debarring process, comprises the steps:
Pending workpiece is provided;And
Using high-pressure spray gun, soft sand blasting is mapped on described workpiece, takes out described workpiece after sustained firing 2s~10s, complete institute State sandblasting debarring process, wherein, the injection air pressure of described high-pressure spray gun is 2kg/cm2~3kg/cm2, described soft sand is Buddhist nun Imperial sand or plastic cement sand, the particle diameter of described soft sand is 0.35mm~0.45mm;Described using high-pressure spray gun, soft sand blasting is mapped to Complete in the operation on the described workpiece of protection, described high-pressure spray gun is oscillated with the frequency of 0~50hz.
2. sandblasting debarring process according to claim 1 is it is characterised in that described workpiece is in mobile terminal device Plate or base plate.
3. sandblasting debarring process according to claim 1 is it is characterised in that be additionally included in will be soft using high-pressure spray gun Before sand blasting is mapped on the described workpiece completing to protect, operation that the appearance of described workpiece is protected.
4. sandblasting debarring process according to claim 3 is it is characterised in that protect to the appearance of described workpiece Operation be: using flexible protective casing, the appearance of described workpiece is coated.
5. a kind of sandblasting deburring system, comprising:
Pre- protection device, for protecting to the appearance of pending workpiece;
Sand blasting unit, including high-pressure spray gun, described high-pressure spray gun is used for for soft sand blasting being mapped to the described workpiece completing to protect, Wherein, the injection air pressure of described high-pressure spray gun is 2kg/cm2~3kg/cm2, described soft sand is nylon sand or plastic cement sand, described The particle diameter of soft sand is 0.35mm~0.45mm;And
Charging/discharging device, for sending into the described workpiece completing to protect and transporting described sand blasting unit;Described charging/discharging device Including conveyer belt, described conveyer belt is used for controlling the time of staying in described sand blasting unit for the described workpiece completing to protect to be 2s ~10s;In the described operation using high-pressure spray gun, soft sand blasting being mapped on the described workpiece completing to protect, described high-pressure spray gun Oscillated with the frequency of 0~50hz.
6. sandblasting deburring system according to claim 5 is it is characterised in that described pre- protection device includes flexible protective Set, described flexible protective casing is used for the appearance of described workpiece is coated.
CN201510642593.6A 2015-09-29 2015-09-29 Sand-blasting deburring technology and sand-blasting deburring system Active CN105171618B (en)

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106002639B (en) * 2016-05-16 2018-08-31 虎艺精密压铸(惠州)有限公司 A kind of blasting craft of TV distributor
CN106826584A (en) * 2017-04-06 2017-06-13 深圳天珑无线科技有限公司 A kind of sand blasting jig and sand blasting system
CN110549251A (en) * 2018-06-01 2019-12-10 富泰华工业(深圳)有限公司 sand blasting grain and sand blasting processing method using same
CN109968132A (en) * 2019-03-29 2019-07-05 苏州久越金属科技有限公司 Automate deburring technique
CN110977779A (en) * 2019-11-27 2020-04-10 西安庄信新材料科技有限公司 Surface sand blasting process for titanium plate
CN111070105B (en) * 2020-01-06 2022-05-13 深圳市贝贝特科技实业有限公司 Grading deburring sand blasting process based on multi-groove aluminum casting
CN112296879A (en) * 2020-10-29 2021-02-02 兴化市森荣金属制品有限公司 Automatic processing method for removing flash and burr of aluminum casting

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5969265A (en) * 1982-10-15 1984-04-19 Fuji Seiki Seizosho:Kk Precision wet-type blasting projection material and its production method
JPS59124569A (en) * 1982-12-28 1984-07-18 Toshiba Corp Dry blasting

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103171188A (en) * 2011-12-21 2013-06-26 深圳富泰宏精密工业有限公司 Shell and manufacturing method of shell
CN103182683B (en) * 2011-12-30 2017-03-08 广州江瑞机电设备有限公司 The method of pattern-making and metal shell obtained by this method on metal shell
CN103485876A (en) * 2013-09-05 2014-01-01 安徽汇展热交换系统有限公司 Surface treatment process of external iron piece of water tank for automobile
CN103737497A (en) * 2014-01-13 2014-04-23 上海澳金玻璃钢制品有限公司 Production technology for surface sandblasting of SMC shower pan
CN103921215B (en) * 2014-04-01 2016-04-27 上海电气电站设备有限公司 The minimizing technology of burr on a kind of straight trough broaching tool
CN205009062U (en) * 2015-09-29 2016-02-03 广东长盈精密技术有限公司 Sandblast burring system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5969265A (en) * 1982-10-15 1984-04-19 Fuji Seiki Seizosho:Kk Precision wet-type blasting projection material and its production method
JPS59124569A (en) * 1982-12-28 1984-07-18 Toshiba Corp Dry blasting

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