CN1385286A - Abrasive drill - Google Patents
Abrasive drill Download PDFInfo
- Publication number
- CN1385286A CN1385286A CN 01118021 CN01118021A CN1385286A CN 1385286 A CN1385286 A CN 1385286A CN 01118021 CN01118021 CN 01118021 CN 01118021 A CN01118021 A CN 01118021A CN 1385286 A CN1385286 A CN 1385286A
- Authority
- CN
- China
- Prior art keywords
- abrasive
- cylinder
- hole
- solid material
- drill bit
- 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.)
- Pending
Links
Images
Landscapes
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The present invention relates to a grinding cylindrical drill bit, including a column body placed on a connecting element, said connecting element can be connected to a drilling machine. Said column body possesses a column base face, a column side face and a cylindrical bottom edge spaced from said column base face. Said column base face is connected to column side face, and said column bottom edge has a smooth surface, and said column bottom edge can utilize grinding material to grind out a circle on a solid material.
Description
The present invention be meant a kind of on pottery and glass material the method and system of holing, refer to especially a kind ofly can on pottery and glass material, produce level and smooth hole, and can not make ceramic the be full of cracks or damaged abrasive drill.
Alleged " pottery ", " ceramic tile ", " glass ", " stone " and other similar term for the present invention that boring on all these similar materials can both be reached good result, all are used interchangeably.Similarly, in explanation during prior art, except that other have indicate, these terms also are used interchangeably.
At present the method to ceramic tile boring mainly contains two kinds: crack and hole.
Crack the last choosing method when always being construction, especially when installing and repair water pipe.For promptly cracking ceramic tile and do out a hole near water pipe with tingle mallet and/or chisel.The optimum of this method is to do out a uneven hole; The worst result staves ceramic tile broken or pulverizes and must change.This technology always needs the cover plate of certain pattern to cover uneven hole edge and provides vapour lock around the hole, although its reason be around the water pipe be not impossible but also be difficult to tight involution.If when handling the crystalline texture as glass and many crystallization stone materials and so on,, so that can't adopt this technology that cracks if knock and to pulverize with chisel or similar tool.
Adopt a kind of being also referred to as " tungsten arrow " shown in Figure 1A (prior art), the tip is the drill bit 100 of spark or carbide alloy.The carbide alloy tip 110 of this carbide drill 100 is a lance type and spark abrading type or the tungsten tip that can bore saturating glass normally.The user of the most advanced and sophisticated formula drill bit 100 of carbide alloy must use a kind of special drill jig, carefully aims at and hold up steady rig in order to rotary drill bit.This drill jig can be guaranteed can correctly aim at and use suitable pressure in order to the tip of boring glass.Yet, because the most advanced and sophisticated formula drill bit 100 of this carbide alloy needs special equipment and orientation, so it is also infeasible to hole at the scene with it.Another restriction of this rig is its expense.A restriction then is that diameter is little again, and the diameter of the most advanced and sophisticated formula drill bit of standard-sized carbide alloy is all less than 1/2 cun.In addition, the hole so that this drill bit 100 is got out all has sharp edge usually, so that must it be polished with emery-cloth or other instrument, thereby the danger of incised wound is arranged in the middle of the process of polishing.
Want to get out bigger hole on pottery and glass material, when for example diameter surpassed 1 cun, the typical method of prior art was to use a kind of box drill bit 120 that is coated with spark shown in Figure 1B (prior art).Segmentation tip 125 is coated with spark, if with a tool pressure rig suitably on time, can cut and wear glass.This box drill bit 120 is constantly cooling during use, normally other liquid that maybe can be removed the big calorimetric that is produced with antifreeze.If not like this, just may make glass fragmentation faced and/or drill bit is damaged, thereby cause expensive cost.Though this method can be used for the workshop, for example make lamp workman, glassworker or other must be holed on pottery so as distribution, by the workshop at workman places such as dress switch etc., but because it need aim at operation and a large amount of cooling agent etc., so to water pipe installation exercise and infeasible.
Therefore, a kind ofly need not annoying drill jig and can use standard electric to be drilled on glass, pottery, ceramic tile and the similar material to hole, comprise the apparatus and method of the hole of major diameter (greater than 1 cun), will be useful improvement if having prior art.
The object of the present invention is to provide a kind of in order on glass, ceramic tile, pottery and similar material, to form novelty and the improved device and the method for hole, its energy:
Use a kind of drill bit that can be used on the standard electric drill:
Must special lubricant;
Use at building-site away from user workshop or factory;
Form a level and smooth hole that after boring, must not polish; With
Meet economic benefit.
Structure and usage with abrasive drill of the present invention can be reached these purposes.This device normally clips to the hand held electric drill of a tool standard.Drill bit is a cylinder, and portion is provided with a sponge formula material or cleaning rubber fin within it.Water and abrasive are mixed, and when the drill bit transfixion, also can select to add abrasive and/or the water that replenishes via cylindrical open top.Drill bit should align with a guiding element of pushing down the material of waiting to hole.Abrasive is that the hole via the cylinder side flows through, and cylindrical root edge then can capture abrasive and make it push down glass or similar solid material, so that grind a cutting hole on this solid material.The hole that last grinding goes out, its size are to exceed with the diameter that grinds the column type drill bit, but usually can 1/2 cun to more than 4 cun, only other size is also feasible.This cutting hole has level and smooth edge usually, there is no sharp keen cutting edge.
A kind of grinding column type of the present invention drill bit is characterized in that it comprises: a cylinder is located on the Connection Element; This Connection Element can be connected to a rig; This cylinder has a cylinder basal plane, a cylindrical side, and a cylinder root edge that is far apart with this cylinder basal plane; This cylinder basal plane is to be connected to cylindrical side; This cylinder root edge has a smooth surface; Can go out a circle by abrasive grinding on a solid material with this cylinder root edge.
A kind of method that forms a hole in solid material is characterized in that this method comprises: a guiding element is located on the surface of a solid material; Abrasive is packed in the guide hole of this guiding element; Grind the column type drill bit with one and insert in the guide hole of this guiding element, this grinding column type drill bit comprises a cylinder and a Connection Element; This cylinder comprises a cylinder basal plane, a cylindrical side and one and the cylinder root edge that is far apart of cylindrical side; Connection Element is to be connected to a rig; Start this rig, make and grind the rotation of column type drill bit; And the cylinder root edge that grinds the column type drill bit and the abrasive between the solid material ground, with in the worn out circle of this solid material.
About other purpose of the present invention, will from detailed description described later, obviously find out, below will describe in further detail with reference to the accompanying drawings, wherein:
Shown in Figure 1A and Figure 1B glass and the ceramic bit that keeps usefulness;
Shown in Figure 2 is a major diameter abrasive drill;
Shown in Figure 3 is a less diameter grinding drill bit;
Shown in Figure 4 is the inside of abrasive drill of the present invention;
Shown in Figure 5 is the drill bit of the present invention that is fixed on the standard electric drill;
A slice boring guiding element on glass that is provided in a side of shown in Figure 6:
Shown in Figure 7 is grinding system of the present invention, and it comprises and is fixed on the rig and is located at the drill bit of position in a slice boring guiding element on glass;
It shown in Fig. 8 A and Fig. 8 B preferred embodiment of boring guiding element; With
Be that another can be for the solid abrasive drill of utilization shown in Fig. 9 A and Fig. 9 B.
The present invention is meant and grinds column type drill bit 1.In the embodiment shown in fig. 7, grinding column type drill bit 1 is to be used for grinding system 10, and this system comprises rig 15, grinds column type drill bit 1 and guiding element 9.
Shown in Figure 2 is one than major diameter, and that shown in Figure 3 then is a grinding column type drill bit 1 than minor diameter.Larger-diameter diameter is usually greater than 2 cun, and than the diameter of minor diameter usually less than 2 cun.Remove in addition, the structure of this two drill bit 1 is all identical.
, grind column type drill bit 1 and comprise one in order to be connected to the Connection Element of rig to shown in Figure 4 as Fig. 2, this Connection Element comprises a connecting axle 4 that forever is installed in cylinder basal plane 5 centers of cylinder 11 usually.Perhaps, this rig Connection Element can be a sleeve hole (not shown), for ccontaining as existing impact wrench used socket bar or axle (not shown).Cylinder 11 should be made with a kind of script just heat-resisting and anti-corrosion hard metal in grinding/process of lapping.Charging hole 6 should traverse cylinder basal plane 5 near cylinder basal plane 5 peripheries.As Fig. 3 among another embodiment not, cylinder basal plane 5 is interrupted and comprises one with top base hole 14.In aforementioned arbitrary embodiment, cylinder basal plane 5 is to be fixed to cylindrical side 8, and this side is provided with the cylinder root edge 2 that is far apart with cylinder basal plane 5.Cylinder root edge 2 is suitable level and smooth, and its surface must not be irregularly shaped for dentation or other.Grinding notch 3 is to form towards 5 crosscuts of cylinder basal plane from cylinder root edge 2.For embodiment in, grinding notch 3 is to extend to one from cylinder root edge 2 to be about as much as cylindrical side 8 total lengths 1/3 to the position more than 1/2.
Cylinder 11 has cylindrical inside 7.There is a cleaning material 18 to be located at cylindrical inside 7, so that abrasive guide cylinder root edge 2.For embodiment in, cleaning material 18 can be as shown in Figure 4 a soft fin 17, or sponge as shown in Figure 5 16.All arbitrary materials that abrasive is moved as before outward all can use.
Be located at the guiding element 9 on the sheet glass 20 as shown in Figure 6, comprising to provide the guide hole 13 of guiding to grinding column type drill bit 1.In the embodiment shown in Fig. 8 A (vertical view) and Fig. 8 B (side view), guide hole 13 is provided with abrasive additional reservoir 21.This container 21 can allow the paste mixture of abrasive flow in the abrasive additional reservoir 21 from cylindrical inside 7 circulations, is back to once again then in cylindrical inside 7 and/or the grinding notch 3.This measure makes abrasive reach more uniform distribution and coating on cylinder root edge 2, also helps to cool off abrasive.
Perhaps, can use grinding shaft rod-type drill bit 25 shown in Figure 9 to go out a hole in glass 20 grindings.In Fig. 9 B, give the grinding shaft rod-type drill bit 25 of demonstration in detail, be provided with a grinding face 27 on its top.Grinding shaft rod-type drill bit 25 can be a solid cylindrical rotating shaft, and individual cylindrical first end and flat second end that comprises grinding face 27 in order to be fixed to rig 15 maybe can be arranged.In aforementioned arbitrary embodiment, drill bit 26 should be located at the top of grinding shaft rod-type drill bit 25 so that initial guiding pit is provided on glass 20, allow this drill bit 25 around its rotation worn out glass 20 to form a hole.Though this solid bit for utilization there is no the absolute range restriction in the use, the bore hole size that grinding goes out should be less than 1 cun.
Grinding system 10 shown in Figure 7 is the preferred embodiment of using abrasive drill 1.Abrasive drill 1 is snapped in rig 15 from connecting axle 4.Then guiding element 9 is lain on the glass 20, this glass can be any vitreous material, comprises glass, ceramic tile, pottery, concrete, laminate (Formica
TM), natural or synthesis stone or materials similar.For breakage is minimized, glass 20 should be placed on the vibration absorptive material, for example on cork, carpet, the hard rubber etc.Perhaps, glass gluing can be installed on the wall, as long as allow guiding element 9 head on glass 20 when the time comes.
Abrasive, for example diamond dust powder, zirconium powder not, with titanium or the aluminium oxide that do not mix with titanium, or pack into the bottom of guide hole 13 of other any similar abrasive, and mix with a spot of water, rare as to be enough to flow into and to grind notch 3 for forming a kind of denseness, but dense the pulp mixture that is enough to have suitable grinding quality.Abrasive drill 1 is put into guide hole 13, make this abrasive drill 1 tightly prop up glass 20, and should allow cylinder root edge 2 and glass 20 surperficial keeping parallelisms, and make connecting axle 4 vertical with its maintenance.Perhaps, can be via 14 abrasives that replenish of charging hole 6 or basal plane hole with common pouring into or injection mode threading cylindrical inside 7.In another embodiment, this abrasive is purified for utilizing with common collection and/or absorption plant again.
Then open the power supply of rig 15, abrasive drill 1 is rotated, and should be with high speed rotating.So abrasive is grinding between cylinder root edge 2 and glass 20 just, grinding goes out a circle on glass 20.The abrasive of cylindrical inside 7 then is to push outward to enter towards cylinder root edge 2 to grind in the notch 3.In addition, also because of original gap between cylinder root edge 2 and glass 20 surfaces, abrasive can be pushed to cylinder root edge 2 belows.Rotate the comprehensive centrifugal force of abrasive drill 1 and can shift to cylinder root edge 2 by the controlled lapping material, abrasive also can " be swept " from glass 20 surfaces to fall and towards 2 delivery of cylinder root edge by sponge 16 or soft fin 17 simultaneously.If abrasive additional reservoir 21 belongs to the some of guiding element, abrasive promptly moves into abrasive additional reservoir 21 from cylindrical inside 7 via grinding notch 3 so.Abrasive in this container 21 also is via grinding notch 3 with from cylinder root edge 2 below circulating refluxs, and provides uniform abrasive to cylinder root edge 2.Take out abrasive drill 1 from the circle of half grinding, abrasive is injected cylindrical inside 7, can reach the operation of adding additional abrasive again the additional abrasive guide hole 13 of packing into, or via charging hole 6 or basal plane hole 14.
Circle is passed glass 20, produces die-cut (Punch-out) plectane on glass 20, and this plectane promptly can drop subsequently, or the mode of from basal plane hole 14 this plectane being released with excellent bar or similar push rod, can be from cylindrical inside 7 its its release or pound out.
Perhaps, as be during than heavy sheet glass, wait the circle of abrasive drill 1 grinding penetrate approximately glass 2/3 after, be transparent or semitransparent and can be for alignment the time, at this glass 20 of supposition so just guiding element 9 is placed again on this circle of glass 20 reverse side.Then to second circle of these glass 20 grindings, till itself and first 's circle is met.Because compare with cylinder root edge 2, abrasive additional reservoir 21 is stood high above the masses, and carries out the circulating reflux operation with activation from cylinder root edge 2 belows, so this method of Gong selecting for use can allow abrasive flow into and flow out this container 21.
In grinding process, should regularly take out abrasive drill 1, and the water flushing is so that can regularly cool off and add additional abrasive from grinding is circular.For this embodiment in, grinding process can regularly suspend, normally per minute suspends once so that from the circular abrasive drill 1 that takes out of grinding, other takes out guiding element 9 (when using), and washes glass 20 surfaces and grinding circles partly.This cleaning can be removed the cutting swarf that abrasive/water mixes slurry.When increasing cutting swarf became a part of that abrasive/water mixing is starched, the percentage because abrasive has been cut bits " dilution " in mixing slurry became more and more lower, just lowered so this mixes the grinding/cutting character of starching.Wait this circle after flushing, promptly reinstall guiding element 9 (when using), new abrasive and a spot of water guide hole 13 of packing into together, then abrasive drill 1 is inserted in the part cutting circle shape again recovery grinding operation again.
The best results that preceding method carries out on horizontal fixed glass 20, and similarly, this glass can be any vitreous material or similar hard solid, including but not limited to glass, ceramic tile, pottery, stone material or any hard crystalline material.This method also can be used for non-horizontal surface, for example holes so that near water pipe on the ceramic tile wall.
In all embodiment of this method for grinding, more suitable way is only to push down cylinder root edge 2 with pressure gently.In addition, should only allow abrasive between cylinder root edge 2 and glass 20, flow through below the cylinder root edge 2.If abrasive drill 1 and cylinder root edge 2 are applied weight, abrasive will be pushed out from the boundary zone between drill bit 1 and the cylinder root edge 2, so that allows abrasive lose grinding/cutting power.
Though aforementioned for each embodiment use guiding element 9 to make abrasive drill 1 and glass 20 close alignment, when using abrasive drill 1 and rig 15, as long as carefully allow cylinder root edge 2 and glass 20 surperficial close alignment, also can be without guiding element 9.Yet, because abrasive can increase loss amount because of suspending and sew relation in midair, so do not advise adopting this method.
The usage of grinding shaft rod-type drill bit 25 is similar to the operation of grinding column type drill bit 1.The abrasive that will belong to the mixing slurry that abrasive mixes with water is earlier usually put into guide hole 13.Then first end of grinding shaft rod-type drill bit 25 is connected to rig 15.Second end of grinding shaft rod-type drill bit 25 then comprises grinding face 27 and drill bit 26.Drill bit 26 is that " pick (dig) " or " stinging (bite) " are gone in the glass 20, makes grinding shaft rod-type drill bit 25 keep stable on the location of this glass 20 and normal orientation.Start rig 15 then, allow grinding shaft rod-type drill bit 25 and grinding face 26 rotate.So the abrasive between grinding face 26 and glass 20 surfaces will grinding go out a hole in glass 20.Now continues grinding, till this hole passes glass 20.
Aforementioned grinding column type drill bit 1 is to form a circle, forms a plectane that takes off from glass 20 with it again, thereby stays hole.25 on grinding shaft rod-type drill bit is that grinding goes out whole hole in glass 20, and the surface area of required grinding is bigger than grinding column type drill bit 1.Therefore, for less hole (being generally diameter) less than 1 cun person, available aforementioned any method and device, and to the hole of diameter greater than 1 cun, then should use and grind column type drill bit 1.
Claims (23)
1. one kind is ground the column type drill bit, it is characterized in that it comprises:
One cylinder is located on the Connection Element;
This Connection Element can be connected to a rig;
This cylinder has a cylinder basal plane, a cylindrical side, and a cylinder root edge that is far apart with this cylinder basal plane;
This cylinder basal plane is to be connected to cylindrical side;
This cylinder root edge has a smooth surface; With
This cylinder root edge can go out a circle by abrasive grinding on a solid material.
2. grinding column type drill bit according to claim 1 is characterized in that other comprises: at least one grinds notch position at respectively this cylindrical side and cylinder root edge adjoiner and vertical with this cylindrical side maintenance; This grinds notch can supply ccontaining abrasive.
3. grinding column type drill bit according to claim 1 is characterized in that other comprises: a cleaning material is located at cylindrical cylindrical inside, and this cleaning material can be abrasive guide cylinder root edge.
4. grinding column type drill bit according to claim 1 is characterized in that other comprises: at least one charging hole is located on the cylinder basal plane; This charging hole provides a passage to feed this cylindrical inside for abrasive.
5. grinding column type drill bit according to claim 1 is characterized in that other comprises: at least one basal plane hole is located on the cylinder basal plane; This basal plane hole provides a passage to feed this cylindrical inside for abrasive.
6. grinding column type drill bit according to claim 1 is characterized in that wherein Connection Element comprises an axostylus axostyle that is fixed to the cylinder basal plane.
7. grinding column type drill bit according to claim 1 is characterized in that wherein Connection Element comprises a sleeve that is located at the cylinder basal plane.
8. method that forms a hole in solid material is characterized in that this method comprises:
One guiding element is located on the surface of a solid material;
Abrasive is packed in the guide hole of this guiding element;
Grind the column type drill bit with one and insert in the guide hole of this guiding element, this grinding column type drill bit comprises a cylinder and a Connection Element; This cylinder comprises a cylinder basal plane, a cylindrical side and one and the cylinder root edge that is far apart of cylindrical side; Connection Element is to be connected to a rig;
Start this rig, make and grind the rotation of column type drill bit; With
The cylinder root edge that grinds the column type drill bit and the abrasive between the solid material are ground, with in the worn out circle of this solid material.
9. the method that forms a hole in solid material according to claim 8 is characterized in that other comprises: the abrasive that grinds in the column type drill bit is swept to the cylinder root edge.
10. the method that forms a hole in solid material according to claim 8 is characterized in that other comprises: abrasive is swept be located at cylindrical side and grind in notch with at least one of cylinder root edge adjacency.
11. the method that forms a hole in solid material according to claim 10 is characterized in that other comprises: abrasive is packed in the abrasive additional reservoir, this container be provided in a side of guide hole near; And abrasive is circulated between cylindrical inside and abrasive additional reservoir.
12. the method that forms a hole in solid material according to claim 8 is characterized in that other comprises: when described circle penetrate approximately solid material 2/3 the time, just stop the grinding step; With the fixed again formal reverse side of guiding element, align with described circle simultaneously at solid material; Carry out grinding with reverse side, to finish described hole at solid material.
13. the method that forms a hole in solid material according to claim 8 is characterized in that wherein solid material is provided in a side of on the non-horizontal plane.
14. the method that forms a hole in solid material according to claim 8 is characterized in that other comprises: before this circle is passed solid material, stop the grinding step off and on; Clean this circle; Abrasive is reloaded guide hole; With recovery grinding step.
15. the method that forms a hole in solid material according to claim 8 is characterized in that other comprises: water is mixed, with abrasive for forming a kind of slurry mixture.
16. a method that forms a hole in solid village material is characterized in that this method comprises:
Abrasive is placed the contiguous one cylinder root edge place of grinding the column type drill bit, and this grinding column type drill bit comprises a cylinder and a Connection Element; This cylinder comprises a cylinder basal plane, a cylindrical side and one and the cylinder root edge that is far apart of cylindrical side; Connection Element is to be connected to a rig;
Make the cylinder root edge prop up the surface of solid material;
Start this rig, make and grind the rotation of column type drill bit; With
The cylinder root edge that grinds the column type drill bit and the abrasive between the solid material are ground, with in the worn out circle of this solid material.
17. the method that forms a hole in solid village material according to claim 16 is characterized in that other comprises: with the abrasive cylindrical inside of packing into; With the abrasive of cylinder inside is swept to the cylinder root edge.
18. the method that forms a hole in solid village material according to claim 16 is characterized in that other comprises: with the abrasive cylindrical inside of packing into; Be located at cylindrical side and grind in notch with abrasive is swept with at least one of cylinder root edge adjacency.
19. the method that forms a hole in solid village material according to claim 16 is characterized in that wherein solid material is provided in a side of on the non-horizontal plane.
20. the method that forms a hole in solid village material according to claim 16 is characterized in that other comprises: before described circle is passed solid material, stop the grinding step off and on; Clean described circle; Abrasive is applied in again the adjoiner of cylinder root edge; With recovery grinding step.
21. a method that forms a hole in solid material is characterized in that this method comprises:
One guiding element is located on the surface of this solid material;
Abrasive is packed in the guide hole of this guiding element;
One grinding shaft rod-type drill bit is inserted in the guide hole of guiding element, and this grinding shaft rod-type drill bit comprises an axostylus axostyle that installs first end and second end, and this first end is to be connected to a rig, and second end then comprises a grinding face;
Start this rig, grinding shaft rod-type drill bit is rotated; With
The grinding face of grinding shaft rod-type drill bit and the abrasive between the solid material are ground, with in the worn out circle of this solid material.
22. the method that forms a hole in solid material according to claim 21 is characterized in that other comprises: be located on this its grinding face of grinding shaft rod-type drill bit and align with this axostylus axostyle axial line a bit, stably prop up this solid material surface.
23. the method that forms a hole in solid material according to claim 21 is characterized in that other comprises: mix with abrasive with water, for forming a kind of slurry mixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01118021 CN1385286A (en) | 2001-05-15 | 2001-05-15 | Abrasive drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01118021 CN1385286A (en) | 2001-05-15 | 2001-05-15 | Abrasive drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1385286A true CN1385286A (en) | 2002-12-18 |
Family
ID=4662923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01118021 Pending CN1385286A (en) | 2001-05-15 | 2001-05-15 | Abrasive drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1385286A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110370372A (en) * | 2019-07-15 | 2019-10-25 | 桐城市畅润电力工程有限公司 | A kind of motherboard of circuit board drilling device |
-
2001
- 2001-05-15 CN CN 01118021 patent/CN1385286A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110370372A (en) * | 2019-07-15 | 2019-10-25 | 桐城市畅润电力工程有限公司 | A kind of motherboard of circuit board drilling device |
| CN110370372B (en) * | 2019-07-15 | 2021-04-30 | 桐城市畅润电力工程有限公司 | Drilling equipment for motherboard of circuit board |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1103269C (en) | Metal single layer abrasive cutting tool having contoured cutting surface | |
| US8257145B2 (en) | Epoxy terrazzo flooring and method for polishing the same | |
| CN109159306B (en) | Glass drilling process | |
| CN100344410C (en) | Reparing and milling device for chemical-mechanical polishing soft pad and its producing method | |
| DE60029089D1 (en) | Dressing tool with diamond grid for chemical-mechanical polishing pad | |
| CN1171072A (en) | Improved segmented cutting tools | |
| CN107044931A (en) | A kind of rock test is with extremely brittle rock end face Plane surface grinding machine | |
| CN1694779A (en) | Drill sharpener | |
| CN104057404A (en) | Three-dimensional cooperative distribution method for various grinding materials for preparing superhard tool | |
| US6981911B2 (en) | Abrasive drill bit | |
| US8070558B2 (en) | Porcelain epoxy flooring and method for producing the same | |
| CN1385286A (en) | Abrasive drill | |
| CN107558701A (en) | A kind of portable multi-function wall scraping device | |
| Polini et al. | Evaluation of diamond tool wear | |
| CN102335888A (en) | Slotting-type freezing and solidifying grinding material polishing pad and preparation method thereof | |
| CN206683920U (en) | Rock test extremely brittle rock end face Plane surface grinding machine | |
| KR100506874B1 (en) | A PCD Temp Cutter And Processing Method | |
| CN2820440Y (en) | Filing removing brick polisher | |
| CN210650005U (en) | Archaize environmental protection ecological stone offset grinding device | |
| CN106799665A (en) | Ceramics based on Crack Extension effect cut combined type plane surface processing method of turning a millstone | |
| TW474862B (en) | Abrasive drill bit | |
| CN111474026A (en) | Manual manufacturing method of mudstone standard test piece | |
| CN219747607U (en) | Novel glaze polishing grinding tool | |
| CN212601186U (en) | Drilling and grinding head special for processing ceramic tile anchoring hole | |
| CN214490046U (en) | Surface grinding device is used in stone carving processing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |