CN105240527A - Method for sealing auxiliary holes through steel balls to improve part appearance quality - Google Patents
Method for sealing auxiliary holes through steel balls to improve part appearance quality Download PDFInfo
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- CN105240527A CN105240527A CN201510724178.5A CN201510724178A CN105240527A CN 105240527 A CN105240527 A CN 105240527A CN 201510724178 A CN201510724178 A CN 201510724178A CN 105240527 A CN105240527 A CN 105240527A
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- auxiliary hole
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Abstract
The invention discloses a method for sealing auxiliary holes through steel balls to improve part appearance quality. The method includes the following steps that according to the GB/T 308 requirements, the steel balls with the nominal diameter of phi D+(0.1-0.5 mm) are selected and purchased; the steel balls are aligned with the auxiliary holes with the hole diameter being phi D in parts and driven into the auxiliary holes, wherein the depth of the steel balls driven into the auxiliary holes ranges from 3/4 D to 7/8 D; and the portions, exposed out of the auxiliary holes, of the steel balls are ground and leveled, so that the auxiliary holes are sealed. By the adoption of the method, the steel balls are adopted for sealing the auxiliary holes, operation is easy, efficient and reliable, and the sealing effect is good; the sealing cost of each auxiliary hole is only 1/6 that of a traditional process plug and economic benefits are considerable; the good sealing effect is achieved and the sealing pass percent is 100%; the appearances of the ground steel balls are bright, tidy and attractive and the part appearance quality can be improved greatly; and in addition, after the steel balls are installed and used, the phenomenon that the steel balls expand after being heated and are then loosened can be effectively avoided, the sealing effect of the steel balls and the normal use of the parts are guaranteed, and the steel balls can be applied for sealing the auxiliary holes with the hole diameter ranging from 3 mm to 25 mm.
Description
Technical field
The present invention relates to a kind of encapsulating method of mechanical parts, specifically a kind of method by steel ball sealing auxiliary hole promoting accessory appearance quality.
Background technique
At present in many mechanical parts, as the bearing sleeve, bearing support etc. of machining center main shaft part, seal after the auxiliary hole of conducting before and after designing requirement drills and reams and processes, the quantity of auxiliary hole is more, mostly be opened on steel components, such as, the auxiliary hole of a set of main shaft part can reach 47.Existing auxiliary hole adopts the stifled sealing of the technique be made up of H62 brass or Q235 steel product turning mostly; during sealing, the technique being coated with industrial glue in advance blocked up righting and squeeze in auxiliary hole; finally technique being blocked up the part car exceeding part surface on lathe to put down, is enhanced leaktightness effect, the exterior edge face also spreading glue usually can blocked up in technique; after its sealing, design sketch is shown in Fig. 1; in Fig. 1, A is that technique is blocked up, and B is righting glue; C is enhanced leaktightness effect glue, and D is part hole wall.There is many drawbacks in the method that this employing technique is blocked up auxiliary hole seals: first, the processing cost that technique is blocked up is higher, the processing charges that copper material or steel technique are blocked up are about 2 yuan/part, in addition, complete 100 auxiliary holes by a pipe industrial glue to calculate, needed for each auxiliary hole, the cost of glue is 1 yuan/hole; The second, higher to the surface smoothness requirements of auxiliary hole, generally must reach Ra1.6, therefore auxiliary hole boring, fraising the time longer, the drilling time comprising each auxiliary hole of tool change time about needs 40s; 3rd, the artificial installation work-hour that each technique is blocked up is about 100s; 4th, the thermal expansion coefficient that copper blocks up is 1.7 times of steel, easily loosens because of expanded by heating after mounting in using process, affects the normal use of sealing effect and engineering goods.Consider processing cost, materials cost and cost of labour that technique is stifled, the cost that every part technique is blocked up is at about 6 yuan, and in addition, the auxiliary hole after part sealing is in the state of exposing after final assembly, and its airtight quality and appearance directly affect the quality of product.Visible, existing technique blocks up that encapsulating method cost is high, troublesome poeration, reliability are low, cannot ensure effective, the reliable sealing to mechanical parts, its compression resistance is only 2MPa, and repair rate is high, and outward appearance is dark yellow, do not mate with the appearance luster of part, appearance quality is poor, unsightly, institute's cementing easily comes off because of the immersion corrosion of oil, liquid, the blob of viscose come off can produce beyond thought consequence in pipeline, and the sealing of this auxiliary hole of class has become a great problem of machine building industry.
Summary of the invention
Technical problem to be solved by this invention is, for the deficiencies in the prior art, a kind of method by steel ball sealing auxiliary hole promoting accessory appearance quality is provided, simple to operate, efficient, reliable, cost is low, good sealing effect, can significantly promote accessory appearance quality, can be applicable to the sealing that pore diameter range is the auxiliary hole of Φ 3 ~ 25mm.
The present invention solves the problems of the technologies described above adopted technological scheme: a kind of method by steel ball sealing auxiliary hole promoting accessory appearance quality, comprises the following steps:
1) choose according to the requirement of GB/T308 the steel ball that nominal diameter is Φ D+ (0.1 ~ 0.5mm);
2) aperture on described steel ball alignment element be the auxiliary hole of Φ D and squeeze in this auxiliary hole, the degree of depth that described auxiliary hole squeezed into by described steel ball is 3/4D ~ 7/8D;
3) the part reconditioning described steel ball being exposed to auxiliary hole is smooth, namely completes the sealing to described auxiliary hole.
The method by steel ball sealing auxiliary hole promoting accessory appearance quality disclosed by the invention, simple to operate, efficient, reliable, sealing effect and appearance quality good.With regard to each steel ball, its average unit price of procurement is 0.3 yuan/part, artificial installation work-hour is about 10s, after installing, manual grinding is about 60s man-hour, the cost of each steel ball sealing of COMPREHENSIVE CALCULATING is at about 1 yuan, that is, adopt steel ball sealing method of the present invention, each auxiliary hole can save sealing cost about 5 yuan, sealing 47 auxiliary holes are needed in a set of main shaft part, therefore, for a machine tool, the a set of main shaft part of light can save sealing cost 235 yuan, if steel ball sealing method of the present invention is applied to whole lathe and even whole mechanical field, huge economic benefit will be produced.Steel ball sealing method of the present invention, while steel ball is squeezed into auxiliary hole, part hole wall produces resiliently deformable, by steel ball banding, and the steel ball that the application adopts meets the requirement of GB/T308, this steel ball is the steel ball through quenching heat treatment, and hardness is high, after tight by hole in piece part armlet, the outer surface that steel ball contacts with part hole wall is annular, can with part hole wall close contact, thus reach good sealing effect, sealing up-to-standard rate reaches 100%; Reconditioning generally adopts hand grinding abrasive disk, if auxiliary hole is positioned at part exposed section, steel ball together can be polished together with part on grinding machine with after the reconditioning of hand grinding abrasive disk, the steel ball appearance after reconditioning is bright, clean and tidy, attractive in appearance, good with the overall appearance of part, can significantly promote accessory appearance quality; In addition, the thermal expansivity of steel ball is suitable with the thermal expansivity of steel components, and the loosening phenomenon that can effectively keep from heat after installing and using after expanding, guarantees the normal use of its sealing effect and part.
Described auxiliary hole is adopt the drilling processing on part of the twist drill of diameter of phi D to obtain.The inventive method to steel ball the surface smoothness requirements of auxiliary hole that is suitable for lower, the punching of this auxiliary hole can be completed by twist drill drilling, significantly can save the machining period of auxiliary hole, easy-to-operat.
The surface finishment of described auxiliary hole is Ra6.3 ~ 12.5, can meet assembling and the seal request of steel ball.
Described steel ball is exposed to the part reconditioning of auxiliary hole smooth after, also take the step that the sealing effect of described steel ball is tested, detailed process for: in the auxiliary hole described in side direction in described auxiliary hole, squeeze into hydraulic oil by hydraulic station, the oil pressure of described hydraulic oil is 6MPa, dwell time is 10min, after pressurize terminates, with oil absorption paper from the steel ball surface described in the outside wiping of described auxiliary hole, and then judged whether hydraulic oil Seepage, if be judged as without hydraulic oil seepage, then illustrate that steel ball sealing is qualified; If be judged as hydraulic oil seepage, then illustrate steel ball sealing defective, take corresponding remedial measure to remedy, until seal qualified.The method by steel ball sealing auxiliary hole of accessory appearance quality is promoted although of the present invention, after its steel ball sealing, sealing up-to-standard rate can reach 100%, through the present inventor's practical proof for many years, also do not find to seal underproof situation, but apply following industry is actual, because of impact that is artificially inevitable by some or objective factor, also likely there is the underproof situation of indivedual steel ball sealing, after the step taking the above-mentioned sealing effect to steel ball to test, effectively can investigate the sealing of steel ball, guarantee the normal use of part and equipment.
If find, steel ball sealing is defective, described remedial measure is: from the outside of described auxiliary hole, described steel ball is squeezed into 1/8D ~ 1/4D again in described auxiliary hole, thus cavity is formed between the outer surface and the outer surface of described part of described steel ball, then this cavity is welded, described auxiliary hole is sealed; Or, described remedial measure is: from the outside of described auxiliary hole, described steel ball is squeezed into 1/8D ~ 1/4D again in described auxiliary hole, thus cavity is formed between the outer surface and the outer surface of described part of described steel ball, then spreading glue in this cavity, seals described auxiliary hole; Or described remedial measure is: pounded out in described auxiliary hole by described steel ball from the inner side of described auxiliary hole, then adopt diameter of phi D
1twist drill drilling reaming is carried out to described auxiliary hole, obtaining aperture is Φ D
1auxiliary hole, be then Φ D in this aperture
1auxiliary hole in squeeze into the nominal diameter chosen according to the requirement of GB/T308 be Φ D
1the steel ball of+(0.1 ~ 0.5mm), this nominal diameter is Φ D
1this aperture squeezed into by the steel ball of+(0.1 ~ 0.5mm) is Φ D
1the degree of depth of auxiliary hole be 3/4D
1~ 7/8D
1, then be Φ D by nominal diameter
1it is Φ D that the steel ball of+(0.1 ~ 0.5mm) exposes to aperture
1the part reconditioning of auxiliary hole smooth, and then to test this nominal diameter be Φ D
1the sealing effect of the steel ball of+(0.1 ~ 0.5mm), if seal still defective after tested, then repeats to take above-mentioned remedial measure, retests sealing effect, until seal qualified.In actual applications, visual actual conditions select above-mentioned three kinds of remedial measures flexibly, to reach good sealing effect.
Described industrial glue for the model that Le Tai company of the U.S. provides be the product of Loctite638.
Compared with prior art, the invention has the advantages that: the method by steel ball sealing auxiliary hole promoting accessory appearance quality provided by the invention, adopt steel ball to seal auxiliary hole, simple to operate, efficient, reliable, good sealing effect; Its to the sealing cost of each auxiliary hole be only tratitional technology stifled 1/6, economic benefits; While steel ball is squeezed into auxiliary hole, part hole wall produces resiliently deformable, by steel ball banding, after tight by hole in piece part armlet, the outer surface that steel ball contact with part hole wall is annular, can with part hole wall close contact, thus reaching good sealing effect, sealing up-to-standard rate can reach 100%; After installation, steel ball exposes to the part of auxiliary hole through reconditioning process, and the steel ball appearance after reconditioning is bright, clean and tidy, attractive in appearance, good with the overall appearance of part, can significantly promote accessory appearance quality; In addition, the thermal expansivity of steel ball is suitable with the thermal expansivity of steel components, and the loosening phenomenon that can effectively keep from heat after installing and using after expanding, guarantees the normal use of its sealing effect and part, can be applicable to the sealing that pore diameter range is the auxiliary hole of Φ 3 ~ 25mm.
Accompanying drawing explanation
Fig. 1 blocks up design sketch after the sealing in sealing technology hole by tratitional technology;
The schematic diagram that Fig. 2 is the degree of depth that in embodiment, auxiliary hole squeezed into by steel ball when being 7/8D.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the present invention.
The method by steel ball sealing auxiliary hole of the promoted accessory appearance quality of embodiment 1, comprises the following steps:
1) choose according to the requirement of GB/T308 the steel ball 1 that nominal diameter is Φ 3.18mm;
2) aperture on steel ball 1 alignment element 2 be the auxiliary hole 3 of Φ 3mm and squeeze in this auxiliary hole 3, steel ball 1 squeezes into the degree of depth of auxiliary hole 3 for being 2.25mm, and auxiliary hole 3 is adopt the drilling processing on part 2 of the twist drill of diameter of phi 3mm to obtain;
3) part reconditioning steel ball 1 being exposed to auxiliary hole 3 is smooth, take the step that the sealing effect of steel ball 1 is tested, detailed process is: in side direction auxiliary hole 3 in auxiliary hole 3, squeeze into hydraulic oil by hydraulic station (not shown), the oil pressure of hydraulic oil is 6MPa, dwell time is 10min, after pressurize terminates, with outside wiping steel ball 1 surface of oil absorption paper from auxiliary hole 3, find without hydraulic oil seepage, namely complete the sealing of the auxiliary hole 3 to embodiment 1.
The method by steel ball sealing auxiliary hole of the promoted accessory appearance quality of embodiment 2, comprises the following steps:
1) choose according to the requirement of GB/T308 the steel ball 1 that nominal diameter is Φ 8.33mm;
2) aperture on steel ball 1 alignment element 2 be the auxiliary hole 3 of Φ 8mm and squeeze in this auxiliary hole 3, the degree of depth that auxiliary hole 3 squeezed into by steel ball 1 is 7mm, and auxiliary hole 3 is adopt the drilling processing on part 2 of the twist drill of diameter of phi 8mm to obtain;
3) part reconditioning steel ball 1 being exposed to auxiliary hole 3 is smooth, take the step that the sealing effect of steel ball 1 is tested, detailed process is: in side direction auxiliary hole 3 in auxiliary hole 3, squeeze into hydraulic oil by hydraulic station, the oil pressure of hydraulic oil is 6MPa, dwell time is 10min, after pressurize terminates, with outside wiping steel ball 1 surface of oil absorption paper from auxiliary hole 3, find without hydraulic oil seepage, namely complete the sealing of the auxiliary hole 3 to embodiment 2.
The method by steel ball sealing auxiliary hole of the promoted accessory appearance quality of embodiment 3, comprises the following steps:
1) choose according to the requirement of GB/T308 the steel ball 1 that nominal diameter is Φ 20.5mm;
2) aperture on steel ball 1 alignment element 2 be the auxiliary hole 3 of Φ 20mm and squeeze in this auxiliary hole 3, the degree of depth that auxiliary hole 3 squeezed into by steel ball 1 is 16mm, and auxiliary hole 3 is adopt the drilling processing on part 2 of the twist drill of diameter of phi 20mm to obtain;
3) part reconditioning steel ball 1 being exposed to auxiliary hole 3 is smooth, take the step that the sealing effect of steel ball 1 is tested, detailed process is: in side direction auxiliary hole 3 in auxiliary hole 3, squeeze into hydraulic oil by hydraulic station, the oil pressure of hydraulic oil is 6MPa, dwell time is 10min, after pressurize terminates, with outside wiping steel ball 1 surface of oil absorption paper from auxiliary hole 3, find without hydraulic oil seepage, namely complete the sealing of the auxiliary hole 3 to embodiment 3.
In above specific embodiment, the surface finishment of auxiliary hole 3 controls assembling and the seal request that can meet steel ball 1 in the scope of Ra6.3 ~ 12.5.The effect schematic diagram after auxiliary hole 3 squeezed into by steel ball 1 can see Fig. 2.
In actual applications, if test finds that indivedual steel ball sealing is defective, corresponding remedial measure can be taked.Such as, for the minor diameter steel ball that nominal diameter is Φ D, if find after installing, steel ball sealing is defective, the remedial measure that can take is, from the outside of auxiliary hole, steel ball is squeezed into 1/8D ~ 1/4D again in auxiliary hole, thus form cavity between the outer surface and the outer surface of part of steel ball, then this cavity is welded, auxiliary hole is sealed; Or remedial measure is: from the outside of auxiliary hole, steel ball is squeezed into 1/8D ~ 1/4D again in auxiliary hole, thus form cavity between the outer surface and the outer surface of part of steel ball, then in this cavity, smear industrial glue, auxiliary hole is sealed.The model that industry glue can select Le Tai company of the U.S. to provide is the product of Loctite638.
And for the larger steel ball of nominal diameter Φ D, except taking with except the identical remedial measure of above-mentioned minor diameter steel ball, also following remedial measure can be adopted: pounded out in auxiliary hole by steel ball from the inner side of auxiliary hole, then adopt diameter of phi D
1twist drill drilling reaming is carried out to auxiliary hole, obtaining aperture is Φ D
1auxiliary hole, be then Φ D in this aperture
1auxiliary hole in squeeze into the nominal diameter chosen according to the requirement of GB/T308 be Φ D
1the steel ball of+(0.1 ~ 0.5mm), this nominal diameter is Φ D
1this aperture squeezed into by the steel ball of+(0.1 ~ 0.5mm) is Φ D
1the degree of depth of auxiliary hole be 3/4D
1~ 7/8D
1, then be Φ D by nominal diameter
1it is Φ D that the steel ball of+(0.1 ~ 0.5mm) exposes to aperture
1the part reconditioning of auxiliary hole smooth, and then to test this nominal diameter be Φ D
1the sealing effect of the steel ball of+(0.1 ~ 0.5mm), if seal still defective after tested, then repeats to take above-mentioned remedial measure, retests sealing effect, until seal qualified.
In actual applications, visual actual conditions select above-mentioned three kinds of remedial measures flexibly, to reach good sealing effect.
Claims (8)
1. can promote the method by steel ball sealing auxiliary hole of accessory appearance quality, it is characterized in that, comprise the following steps:
1) choose according to the requirement of GB/T308 the steel ball that nominal diameter is Φ D+ (0.1 ~ 0.5mm);
2) aperture on described steel ball alignment element be the auxiliary hole of Φ D and squeeze in this auxiliary hole, the degree of depth that described auxiliary hole squeezed into by described steel ball is 3/4D ~ 7/8D;
3) the part reconditioning described steel ball being exposed to auxiliary hole is smooth, namely completes the sealing to described auxiliary hole.
2. a kind of method by steel ball sealing auxiliary hole promoting accessory appearance quality according to claim 1, is characterized in that, described auxiliary hole is adopt the drilling processing on part of the twist drill of diameter of phi D to obtain.
3. a kind of method by steel ball sealing auxiliary hole promoting accessory appearance quality according to claim 1, is characterized in that, the surface finishment of described auxiliary hole is Ra6.3 ~ 12.5.
4. a kind of method by steel ball sealing auxiliary hole promoting accessory appearance quality according to claim 1, it is characterized in that, described steel ball is exposed to the part reconditioning of auxiliary hole smooth after, also take the step that the sealing effect of described steel ball is tested, detailed process for: in the auxiliary hole described in side direction in described auxiliary hole, squeeze into hydraulic oil by hydraulic station, the oil pressure of described hydraulic oil is 6MPa, dwell time is 10min, after pressurize terminates, with oil absorption paper from the steel ball surface described in the outside wiping of described auxiliary hole, and then judged whether hydraulic oil Seepage, if be judged as without hydraulic oil seepage, then illustrate that steel ball sealing is qualified, if be judged as hydraulic oil seepage, then illustrate steel ball sealing defective, take corresponding remedial measure to remedy, until seal qualified.
5. a kind of method by steel ball sealing auxiliary hole promoting accessory appearance quality according to claim 4, it is characterized in that, described remedial measure is: from the outside of described auxiliary hole, described steel ball is squeezed into 1/8D ~ 1/4D again in described auxiliary hole, thus cavity is formed between the outer surface and the outer surface of described part of described steel ball, then this cavity is welded, described auxiliary hole is sealed.
6. a kind of method by steel ball sealing auxiliary hole promoting accessory appearance quality according to claim 4, it is characterized in that, described remedial measure is: from the outside of described auxiliary hole, described steel ball is squeezed into 1/8D ~ 1/4D again in described auxiliary hole, thus cavity is formed between the outer surface and the outer surface of described part of described steel ball, then in this cavity, smear industrial glue, described auxiliary hole is sealed.
7. a kind of method by steel ball sealing auxiliary hole promoting accessory appearance quality according to claim 6, is characterized in that, described industrial glue for the model that Le Tai company of the U.S. provides be the product of Loctite638.
8. a kind of method by steel ball sealing auxiliary hole promoting accessory appearance quality according to claim 4, it is characterized in that, described remedial measure is: pounded out in described auxiliary hole by described steel ball from the inner side of described auxiliary hole, then adopts diameter of phi D
1twist drill drilling reaming is carried out to described auxiliary hole, obtaining aperture is Φ D
1auxiliary hole, be then Φ D in this aperture
1auxiliary hole in squeeze into the nominal diameter chosen according to the requirement of GB/T308 be Φ D
1the steel ball of+(0.1 ~ 0.5mm), this nominal diameter is Φ D
1this aperture squeezed into by the steel ball of+(0.1 ~ 0.5mm) is Φ D
1the degree of depth of auxiliary hole be 3/4D
1~ 7/8D
1, then be Φ D by nominal diameter
1it is Φ D that the steel ball of+(0.1 ~ 0.5mm) exposes to aperture
1the part reconditioning of auxiliary hole smooth, and then to test this nominal diameter be Φ D
1the sealing effect of the steel ball of+(0.1 ~ 0.5mm), if seal still defective after tested, then repeats to take above-mentioned remedial measure, retests sealing effect, until seal qualified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510724178.5A CN105240527B (en) | 2015-10-29 | 2015-10-29 | The method by steel ball sealing fabrication hole of accessory appearance quality can be lifted |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510724178.5A CN105240527B (en) | 2015-10-29 | 2015-10-29 | The method by steel ball sealing fabrication hole of accessory appearance quality can be lifted |
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| Publication Number | Publication Date |
|---|---|
| CN105240527A true CN105240527A (en) | 2016-01-13 |
| CN105240527B CN105240527B (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510724178.5A Active CN105240527B (en) | 2015-10-29 | 2015-10-29 | The method by steel ball sealing fabrication hole of accessory appearance quality can be lifted |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108097920A (en) * | 2018-01-31 | 2018-06-01 | 宁波海天金属成型设备有限公司 | Titanium alloy material cylinder structure |
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|---|---|---|---|---|
| US4712353A (en) * | 1982-06-01 | 1987-12-15 | Monroe Auto Equipment Company | Gas pressurized shock absorber assembly |
| JPH1182431A (en) * | 1997-09-10 | 1999-03-26 | Toyota Motor Corp | Ball press fitting and sealing structure |
| CN203421163U (en) * | 2013-07-18 | 2014-02-05 | 佛山市科达液压机械有限公司 | Rapid sealing and installing device of auxiliary hole |
| CN203756985U (en) * | 2013-12-04 | 2014-08-06 | 四川长虹模塑科技有限公司 | Plug for mold waterway hole plugging |
-
2015
- 2015-10-29 CN CN201510724178.5A patent/CN105240527B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4712353A (en) * | 1982-06-01 | 1987-12-15 | Monroe Auto Equipment Company | Gas pressurized shock absorber assembly |
| JPH1182431A (en) * | 1997-09-10 | 1999-03-26 | Toyota Motor Corp | Ball press fitting and sealing structure |
| CN203421163U (en) * | 2013-07-18 | 2014-02-05 | 佛山市科达液压机械有限公司 | Rapid sealing and installing device of auxiliary hole |
| CN203756985U (en) * | 2013-12-04 | 2014-08-06 | 四川长虹模塑科技有限公司 | Plug for mold waterway hole plugging |
Non-Patent Citations (1)
| Title |
|---|
| 刘曾韫: "不可拆卸式工艺球堵", 《液压与气动》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108097920A (en) * | 2018-01-31 | 2018-06-01 | 宁波海天金属成型设备有限公司 | Titanium alloy material cylinder structure |
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| CN105240527B (en) | 2017-05-31 |
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