CN1304165C - Processing method of die orifice - Google Patents
Processing method of die orifice Download PDFInfo
- Publication number
- CN1304165C CN1304165C CNB031566200A CN03156620A CN1304165C CN 1304165 C CN1304165 C CN 1304165C CN B031566200 A CNB031566200 A CN B031566200A CN 03156620 A CN03156620 A CN 03156620A CN 1304165 C CN1304165 C CN 1304165C
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- frotton
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Abstract
The present invention provides a method for machining a die orifice, which can be used for machining the inner circumferential surface of a die, and the enclosure of the inner circumferential surface forms the die orifice. The method comprises the following steps: 1, preparing a grinding rod head which forms a cone shape, can rotate around a grinding axial line and can move along the grinding axial line, and causing a grinding outer circumferential surface of the grinding rod head to have a determined angle with the grinding axial line; 2, causing the grinding rod head to move to the grinding outer circumferential surface to grind a top circumferential part of the inner circumferential surface; 3, causing the grinding rod head to move to the position away from the top circumferential part; 4, causing the grinding rod head and the top circumferential part to produce relative movement to change the position of the top circumferential part corresponding to the grinding rod head; 5, circulating the step 2 to the step 4 to cause the top circumferential part to form a parting circumferential surface.
Description
Technical field
The present invention relates to a kind of processing method, particularly relate to a kind of release processing method relevant for the eyeglass die cavity.
Background technology
As shown in Figure 1, be existing a kind of mould 1 that is used for moulding one plastic lens 3 (see figure 3)s, this mould 1 has the die hole 101 that can insert for a die 4 (see figure 3)s, and an inner peripheral surface 102 that defines this die hole 101, and this inner peripheral surface 102 has a top perimembranous 1021.When the dealer after this top perimembranous 1021 utilizes an electrode 5 to carry out the discharge processing of release side face, this top perimembranous 1021 can form a pair of release side face 1023 that should electrode 5 shapes, and in order to improve the surface roughness of this release side face 1023, the dealer generally can relend by oilstone or diamond cream this release side face 1023 is carried out release direction hand lapping processing, so that can the successfully release demoulding after these eyeglass 3 moulding.
Though the dealer can utilize discharge to be processed to form this release side face 1023, and can utilize hand lapping and polish this release side face 1023,, this kind processing mode but has following disappearance:
Because the process velocity of discharge processing is slow and consuming time, and processing charges height, therefore, utilize this release side face 1023 of discharge machine-shaping to be as good as and to increase production cost, and, as shown in Figure 2, after utilizing this release side face 1023 of discharge machine-shaping, this release side face 1023 can form most shrinkage pools 1024 because of arc discharge, cause the surface roughness of this release side face 1023 generally can only reach about 0.4 μ m, thereby must utilize hand lapping to polish processing again, yet, as shown in Figure 3, though hand lapping processing can improve the surface roughness of this release side face 1023, but, hand lapping processing also can't be eliminated these shrinkage pools 1024, thereby cause the side face of this eyeglass 3 to tend to produce polishing scratch after the demoulding fully, in addition, in the process of machine-shaping of discharging, this release side face 1023 tends to produce a chamfered section 1025 (see figure 2)s.
The shortcoming of above-mentioned situation is comprehensively as follows:
1. with high costs, management is difficult for.
2. because processing the precision that is produced, discharge relies on many condition enactments, as discharging gap, size of current or the like, thereby wayward precise measure.
3. by the release side face that discharge-treating method produced, still need:
A. processing procedure is ground in the back, and with end face 1026 (see figure 3)s of this mould 1 of grinding reduction, and then worn minimizing is because the chamfered corners 1025 that discharge spark caused.
B. utilize manual polishing again, to eliminate the small hole that discharge processing produces.
C. make suitable sparking electrode.
4. because must make that surface quality, release, the dimensional accuracy in each cave can't be consistent simultaneously to a plurality of die cavity processing.
Summary of the invention
The object of the present invention is to provide a kind of process velocity fast and cost is low, and can form an accurate release side face, and make the eyeglass processing method in release die hole easily.
The processing method in die of the present invention hole, be to can be used for processing one of a mould defines a die hole around a first axle inner peripheral surface, this inner peripheral surface has a top perimembranous, this top perimembranous has an opening periphery around this first axle, this method is to be used to this top perimembranous formation to press from both sides the release side face of a set angle with this first axle, be characterized in, this processing method comprises: (A) prepare an end towards this die hole a diminishing frotton head, this frotton head can rotate around the grinding axis of parallel this first axle and move back and forth along parallel this first axle direction, and having a grinding outer peripheral face around this grinding axis, this grinding outer peripheral face is and this set angle of this grinding shaft wire clamp.(B) make this frotton head move to this grinding outer peripheral face and contact, to grind this top perimembranous with the top perimembranous of this inner peripheral surface.(C) make this frotton head move to the top perimembranous of this grinding outer peripheral face away from this inner peripheral surface.(D) the top perimembranous of this frotton head and this inner peripheral surface is relatively moved along this opening periphery generation, and change this top perimembranous and this frotton head position contacting.(E) circulation step B to D is so that this top perimembranous forms a release side face.
Via above explanation, can again advantage of the present invention be summarized as follows:
One, the present invention utilizes this this release side face of grinder machine-shaping of boring a hole, and, according to the actual test of this case inventor relatively, if process at identical mould, the present invention only needs to machine half a day, the discharge processing of background technology then needed to finish in three days consuming time, and the expense that the present invention spent only is about 1/10th of background technology especially, therefore, and compared to the discharge processing of background technology, the present invention not only process velocity is fast, and processing cost is low.
Two, the present invention utilizes this main shaft to drive this frotton head to move and drive this frotton head around this grinding axis rotation along this grinding axis is upper and lower, and cooperate this workbench to drive this mould, and make this top perimembranous be ground this release side face of formation, therefore, this release side face can not produce most shrinkage pools as background technology, and can have surface of good roughness (can reach 0.1 μ m), so, the release side face of this that the present invention was processed to form, do not need to utilize again hand lapping to polish processing, and can simplify procedure for processing.
Three, the more important thing is, the present invention can make and accurately form this release angle that equates in fact with this angle between this release side face and this first axle, and can not produce fully as the chamfered section as the background technology, therefore, when an eyeglass (figure do not show) in this release side face center on the space of formation after the moulding, this eyeglass can not form burr fully, and is like this, this eyeglass can the successfully release demoulding after moulding, and has good surface accuracy.
The present invention is described in detail below in conjunction with drawings and Examples:
Description of drawings
Fig. 1 is the cross-sectional schematic of a mould, illustrates that an inner peripheral surface around a die hole that forms this mould is to utilize discharge machine-shaping one release side face.
Fig. 2 is the local enlarged diagram of Fig. 1.
Fig. 3 is the view of a similar Fig. 2, illustrates that this release side face manually still has most shrinkage pools after the attrition process.
Fig. 4 is the partial schematic diagram of boring a hole a grinder and a mould that processing method one first preferred embodiment in die of the present invention hole is adopted.
Fig. 5 is the flow chart of this first preferred embodiment.
Fig. 6 is the view of a similar Fig. 4, and the frotton head that this grinder of boring a hole is described is displaced downwardly to an inner peripheral surface around a die hole of this mould and contacts.
Fig. 7 is the view of a similar Fig. 4, illustrates to move on this frotton head to break away from this inner peripheral surface.
Fig. 8 is a schematic top plan view, and the workbench that this grinder of boring a hole is described drives this mould and moves, and moves so that this inner peripheral surface produces with respect to this frotton head.
Fig. 9 is the view of a similar Fig. 6, illustrates that this frotton head is displaced downwardly to fully to contact with this inner peripheral surface.
Figure 10 is the cross-sectional schematic of this mould, illustrates that this inner peripheral surface has been processed to form a release side face.
Figure 11 is the partial schematic diagram of boring a hole a grinder and a mould that processing method one second preferred embodiment in die of the present invention hole is adopted.
Figure 12 is the view of a similar Figure 11, and the frotton head that this grinder of boring a hole is described is displaced downwardly to an inner peripheral surface around a die hole of this mould and contacts.
Figure 13 is the view of a similar Figure 11, illustrates to move on this frotton head to break away from this inner peripheral surface.
Figure 14 is a schematic perspective view, and the workbench that this grinder of boring a hole is described drives this mould and moves, and moves so that this inner peripheral surface produces with respect to this frotton head.
Figure 15 is the cross-sectional schematic of this mould, illustrates that this inner peripheral surface has been processed to form a release side face.
Figure 16 is the view of a similar Fig. 6, illustrates that oblique being displaced downwardly to an inner peripheral surface around a die hole of a mould of the frotton head of processing method 1 the 3rd preferred embodiment in die of the present invention hole contacts, and makes one to grind axis relatively near a first axle.
Figure 17 is the view of a similar Fig. 7, illustrates after this frotton head breaks away from this inner peripheral surface also to move obliquely, and makes this grinding axis relatively away from this first axle.
The specific embodiment
Before proposing detailed description, be noted that in the following description similar elements is to represent with identical numbering.
Embodiment 1
Consult Fig. 4, be a mould 10 of the one first preferred embodiment institute desire processing of the processing method in die of the present invention hole, and the grinder 20 of boring a hole that is adopted.
This mould 10 has the inner peripheral surface 12 that a die hole 11, centers on a first axle Z and defines this die hole 11, this inner peripheral surface 12 has a top perimembranous 121, and a end perimembranous 122 along this first axle Z in contrast to this top perimembranous 121, this top perimembranous 121 has an opening periphery 1211 around this first axle Z.
This grinder 20 of boring a hole has main shaft 21, that a definable goes out the grinding axis u of parallel this first axle Z and is installed in frotton 22 on the free end of this main shaft 21, and one can be for the workbench 23 of these mould 10 installing location.This frotton 22 has one and is formed on its free end and generally is cone shape frotton head 221, the external diameter of this frotton head 221 is along this grinding axis u and towards these mould 10 convergents, this frotton head 221 has a grinding outer peripheral face 222 around this grinding axis u, this grinding outer peripheral face 222 is to be a gradient with this grinding axis u, form an angle theta less than 90 degree and grind axis u with this, this main shaft 21 can drive this frotton head 221 and rotate around this grinding axis u, and this main shaft 21 can to drive this frotton head 221 upper and lower mobile along this grindings axis u.This workbench 23 can move along second axis X vertical with this first axle Z, and this workbench 23 can move along three an axis Y vertical with this first and second axis Z, X.
Consult Fig. 5, utilize above-mentioned 20 pairs of these moulds 10 of grinder of boring a hole to process, first preferred embodiment of the processing method in die of the present invention hole is may further comprise the steps:
Step 1: consult Fig. 4, prepare this grinder 20 of boring a hole, and these mould 10 installings are positioned on this workbench 23.
Step 2: consult Fig. 6, make this main shaft 21 drive this frotton head 221 and move down a feeding depth along this grinding axis u, contacted with the top perimembranous 121 of this inner peripheral surface 12 so that should grind outer peripheral face 222, simultaneously, and make this main shaft 21 drive this frotton head 221 around this grinding axis u rotation, ground these top perimembranous 121 so that should grind outer peripheral face 222.
Step 3: consult Fig. 7, make this main shaft 21 drive this frotton head 221 along moving to the top perimembranous 121 that this grinding outer peripheral face 222 breaks away from this inner peripheral surface 12 on this grinding axis u.
Step 4: consult Fig. 8, making this workbench 23 drive this mould 10 moves along parallel this second and third axis X, Y direction, so that the top perimembranous 121 of this inner peripheral surface 12 moves with respect to this frotton head 221 along this opening periphery 1211, and then change the position of this top perimembranous 121 with respect to this frotton head 221, and make the different parts of this top perimembranous 121 all can move to the belows of this frotton head 221.
Step 5: continuous circulation step two to four, and ground the different parts of this top perimembranous 121 along this opening periphery 1211 with same feeding depth when this grinding outer peripheral face 222 after, promptly increase this main shaft 21 and drive the feeding depth that this frotton head 221 moves down, to increase the scope (see figure 9) that this grinding outer peripheral face 222 contacts with this top perimembranous 121, so, consult Figure 10, this top perimembranous 121 is ground form a release side face 1212, and can make the release angle α that this release side face 1212 and the Z-shaped one-tenth one of this first axle and this angle theta equate in fact.
Embodiment 2
Consult Figure 11 to 14, be one second preferred embodiment of the present invention, this second preferred embodiment is to be similar to this first preferred embodiment, and its difference part is:
As shown in figure 11, the grinder 20 of boring a hole that this second preferred embodiment is adopted has main shaft 21, that a definable goes out an axis Z ' parallel with a first axle Z and is installed on the free end of this main shaft 21 and can be installed in frotton 22 on this adjusting device 24 around the adjusting device 24, of this axis Z ' rotation, and one can be for the workbench 23 of these mould 10 installing location.This frotton 22 has a frotton head 221 that is formed on its free end, and these frotton 22 definables go out one and be the grinding axis u of angle β less than 90 degree with this first axle Z, and this frotton head 221 has a grinding outer peripheral face 222 around this grinding axis u.This main shaft 21 can drive this frotton head 221 through this adjusting device 24 and move along this axis Z ' is upper and lower, and this main shaft 21 can drive this frotton head 221 and rotate around this grinding axis u, this workbench 23 can move along second axis X vertical with this first axle Z, and this workbench 23 can move along three an axis Y vertical with this first and second axis Z, X.
This second preferred embodiment is may further comprise the steps:
Step 1: consult Figure 11, prepare this grinder 20 of boring a hole, and these mould 10 installings are positioned on this workbench 23.
Step 2: consult Figure 12, make this main shaft 21 drive this frotton head 221 and move down a feeding depth along this axis Z ' through this adjusting device 24, contacted with the top perimembranous 121 of this inner peripheral surface 12 so that should grind outer peripheral face 222, simultaneously, and make this main shaft 21 drive this frotton head 221 around this grinding axis u rotation, ground these top perimembranous 121 so that should grind outer peripheral face 222.
Step 3: consult Figure 13, make this main shaft 21 drive this frotton head 221 along moving to the top perimembranous 121 that this grinding outer peripheral face 222 breaks away from this inner peripheral surface 12 on this axis Z ' through this adjusting device 24.
Step 4: consult Figure 14, make this workbench 23 drive these moulds 10 along parallel this second, three axis X, the Y direction moves, so that the top perimembranous 121 of this inner peripheral surface 12 moves with respect to this frotton head 221 along this opening periphery 1211, in addition, and make this adjusting device 24 drive this frotton 22 around this axis Z ' rotation, can keep quadrature with this opening periphery 1211 so that should grind the projection line v of axis u on this mould 10, so, can change the position of this top perimembranous 121, and make the different parts of this top perimembranous 121 all can move to the belows of this frotton head 221 with respect to this frotton head 221.
Step 5: continuous circulation step two to four, and ground the different parts of this top perimembranous 121 along this opening periphery 1211 with same feeding depth when this grinding outer peripheral face 222 after, promptly increase this main shaft 21 and drive the feeding depth that this frotton head 221 moves down through this adjusting device 24, to increase the scope that this grinding outer peripheral face 222 contacts with this top perimembranous 121, then, consult Figure 15, so, this top perimembranous 121 is ground form these release side faces 1212, and can make this release side face 1212 and this first axle Z be a release angle α who equates in fact with this angle β.
So, this second preferred embodiment also can reach purpose and the effect identical with above-mentioned first preferred embodiment.
Embodiment 3
Consult Figure 16,17, be one the 3rd preferred embodiment of the present invention, the 3rd preferred embodiment is to be similar to this first preferred embodiment, and its difference part is:
Consult Figure 16, in step 2, making these main shaft 21 these frotton heads 221 of drive be displaced downwardly to this grinding outer peripheral face 222 along this grinding axis u contacts with the top perimembranous 121 of this inner peripheral surface 12, and make simultaneously this main shaft 21 drive these frotton heads 221 along this second axis X direction towards this first axle Z translation, and make oblique close relatively this first axle Z of this grindings axis u.And, consult Figure 17, between step 2, three, increase by a step 2 A, make this main shaft 21 drive this frotton head 221 along this second axis X direction towards this first axle Z translation, so that these grinding outer peripheral face 222 translations break away from this top perimembranous 121.In step 3, make this main shaft 21 drive this frotton head 221 along moving on this grinding axis u, and make simultaneously this main shaft 21 drive these frotton heads 221 along this second axis X direction translation away from this first axle Z, and make this grinding axis u oblique relatively away from this first axle Z.At last, between step 3, four, increase by a step 3 A, make this main shaft 21 drive these frotton heads 221 along this second axis X direction translation away from this first axle Z, and get back to original position.So, the 3rd preferred embodiment also can reach purpose and the effect identical with above-mentioned first preferred embodiment.And, more can prolong the life-span of this frotton 22 and be beneficial to chip removal because of oblique turning a millstone.
Conclude above-mentioned, the processing method in die of the present invention hole, not only process velocity is fast and processing cost is low, and can form accurate release side face, and makes the eyeglass can be release easily and have good surface accuracy, so can reach the purpose of invention really.
The above, be preferred embodiment of the present invention only, when not limiting scope of the invention process with this, promptly change according to the present patent application claim and the simple equivalent done of creation description generally and modify, all still belong in the scope that patent of the present invention contains.
Claims (15)
1, the processing method in a kind of die hole, be to can be used for processing one of a mould defines a die hole around a first axle inner peripheral surface, this inner peripheral surface has a top perimembranous, this top perimembranous has an opening periphery around this first axle, this method is to be used to this top perimembranous formation to press from both sides the release side face of a set angle with this first axle, it is characterized in that:
This processing method comprises:
(A) prepare an end towards this die hole a diminishing frotton head, this frotton head can rotate around the grinding axis of parallel this first axle and move back and forth along parallel this first axle direction, and having a grinding outer peripheral face around this grinding axis, this grinding outer peripheral face is and this set angle of this grinding shaft wire clamp;
(B) make this frotton head move to this grinding outer peripheral face and contact, to grind this top perimembranous with the top perimembranous of this inner peripheral surface;
(C) make this frotton head move to the top perimembranous of this grinding outer peripheral face away from this inner peripheral surface;
(D) the top perimembranous of this frotton head and this inner peripheral surface is relatively moved along this opening periphery generation, and change this top perimembranous and this frotton head position contacting; And
(E) circulation step B to D is so that this top perimembranous forms a release side face.
2, the processing method in die as claimed in claim 1 hole is characterized in that:
In step (A), more prepare the grinder of boring a hole, this grinder of boring a hole has the main shaft that a definable goes out this grinding axis, reaching one can be for the workbench of this mould installing location, this workbench can move along second axis vertical with this first axle, and this workbench can along one with this first, the 3rd axis of two axis normal moves, this main shaft can grind the axis rotation and can grind axis along this and move back and forth around this, this frotton head is to be installed on the free end of this main shaft, make this main shaft can drive this frotton head and rotate, and make this main shaft can drive this frotton head to move back and forth along this grinding axis around this grinding axis.
3, the processing method in die as claimed in claim 2 hole is characterized in that:
In step (B), make this main shaft drive this frotton head and move to this grinding outer peripheral face along this grinding axis and contact, and this frotton head of this main shaft drives is rotated around this grinding axis, so that this grinding outer peripheral face grinds this top perimembranous with the top perimembranous of this inner peripheral surface.
4, the processing method in die as claimed in claim 2 hole is characterized in that:
In step (C), make this main shaft drive this frotton head and move to the top perimembranous that this grinding outer peripheral face breaks away from this inner peripheral surface along this grinding axis.
5, the processing method in die as claimed in claim 2 hole is characterized in that:
In step (D), make this workbench drive this mould and move along this second and third axis, so that the top perimembranous of this inner peripheral surface moves with respect to this frotton head along this opening periphery, and then change the position of this top perimembranous with respect to this frotton head.
6, the processing method in die as claimed in claim 2 hole is characterized in that:
In step (E), continuously circulation step (B) is to (D), and after this grinds outer peripheral face and has ground the difference part of this top perimembranous with same feeding depth along this opening periphery, increases this main shaft and drive the feeding depth that this frotton head moves.
7, the processing method in die as claimed in claim 1 hole is characterized in that:
In step (B), make this grinding axis relatively near this first axle simultaneously, and, in step (C), make this grinding axis simultaneously relatively away from this first axle.
8, the processing method in die as claimed in claim 7 hole is characterized in that:
This processing method more comprises a step (B1) between step (B), (C), makes this frotton head towards this first axle translation, so that this grinding outer peripheral face translation breaks away from this top perimembranous.
9, the processing method in die as claimed in claim 7 hole is characterized in that:
This processing method more comprises a step (C1) between step (C), (D), makes this frotton head translation away from this first axle, and gets back to original position.
10, the processing method in a kind of die hole, be to can be used for processing one of a mould defines a die hole around a first axle inner peripheral surface, this inner peripheral surface has a top perimembranous, this top perimembranous has an opening periphery around this first axle, this method is to be used to this top perimembranous formation to press from both sides the release side face of a set angle with this first axle, it is characterized in that:
This processing method comprises:
(A) prepare a frotton head, this frotton head can be a grinding axis less than 90 angles of spending with this first axle around one and rotate, and this frotton head can move back and forth along an axis parallel with this first axle, and this frotton head has a grinding outer peripheral face around this grinding axis;
(B) make this frotton head move to this grinding outer peripheral face and contact, to grind this top perimembranous with the top perimembranous of this inner peripheral surface along this axis;
(C) make this frotton head move to the top perimembranous that this grinding outer peripheral face breaks away from this inner peripheral surface along this axis;
(D) the top perimembranous of this frotton head and this inner peripheral surface is relatively moved along this opening periphery generation, also make a projection line and this opening periphery of this grinding axis on this mould keep quadrature simultaneously, to change the position of this top perimembranous with respect to this frotton head;
(E) circulation step B to D is so that this top perimembranous forms a release side face.
11, the processing method in die as claimed in claim 10 hole is characterized in that:
In step (A), more prepare the grinder of boring a hole, this grinder of boring a hole has the main shaft that a definable goes out this axis, one adjusting device that is installed on the free end of this main shaft and can rotates around this axis, one is installed on this adjusting device and definable goes out the frotton of this grinding axis, reaching one can be for the workbench of this mould installing location, this frotton head is to be formed on the free end of this frotton, this main shaft can drive this adjusting device, this frotton head moves back and forth along this axis, this main shaft can drive this frotton head and rotate around this grinding axis, this workbench can move along second axis vertical with this first axle, and this workbench can along one with this first, the 3rd axis of two axis normal moves, make this main shaft can drive this frotton head and rotate, and make this main shaft drive this frotton head to move back and forth along this axis through this adjusting device around this grinding axis.
12, the processing method in die as claimed in claim 11 hole is characterized in that:
In step (B), making this main shaft drive this frotton head through this adjusting device moves to this grinding outer peripheral face along this axis and contacts with the top perimembranous of this inner peripheral surface, and this frotton head of this main shaft drives is rotated around this grinding axis, so that this grinding outer peripheral face grinds this top perimembranous.
13, the processing method in die as claimed in claim 11 hole is characterized in that:
In step (C), make this main shaft drive this frotton head and move to the top perimembranous that this grinding outer peripheral face breaks away from this inner peripheral surface along this axis through this adjusting device.
14, the processing method in die as claimed in claim 11 hole is characterized in that:
In step (D), making this workbench drive this mould moves along this second and third axis, so that the top perimembranous of this inner peripheral surface moves with respect to this frotton head along this opening periphery, and make this adjusting device drive this frotton around this axis rotation, kept quadrature so that should grind projection line and this opening periphery of axis on this mould, and then changed the position of this top perimembranous with respect to this frotton head.
15, the processing method in die as claimed in claim 11 hole is characterized in that:
In step (E), continuously circulation step (B) is to (D), and after this grinds outer peripheral face and has ground the difference part of this top perimembranous with same feeding depth along this opening periphery, increases this main shaft and drive the feeding depth that this frotton head moves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031566200A CN1304165C (en) | 2003-09-05 | 2003-09-05 | Processing method of die orifice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031566200A CN1304165C (en) | 2003-09-05 | 2003-09-05 | Processing method of die orifice |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1590022A CN1590022A (en) | 2005-03-09 |
| CN1304165C true CN1304165C (en) | 2007-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031566200A Expired - Fee Related CN1304165C (en) | 2003-09-05 | 2003-09-05 | Processing method of die orifice |
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| Country | Link |
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| CN (1) | CN1304165C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100450704C (en) * | 2006-08-01 | 2009-01-14 | 杭州兴源过滤机有限公司 | Process of machining shallow hole in mold |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4513542A (en) * | 1983-10-14 | 1985-04-30 | The United States Of America As Represented By The Secretary Of The Navy | Portable surfacing machine for boiler manhole |
| US5934976A (en) * | 1996-05-15 | 1999-08-10 | Denso Corporation | Method for grinding a taper surface and grinding apparatus using the same |
| US5974641A (en) * | 1993-06-14 | 1999-11-02 | Hogue; William R. | Method of shaping a muzzle-loading firearm barrel |
| CN2544884Y (en) * | 2002-06-04 | 2003-04-16 | 威力钻石工业股份有限公司 | Shaped mould hole polishing device |
-
2003
- 2003-09-05 CN CNB031566200A patent/CN1304165C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4513542A (en) * | 1983-10-14 | 1985-04-30 | The United States Of America As Represented By The Secretary Of The Navy | Portable surfacing machine for boiler manhole |
| US5974641A (en) * | 1993-06-14 | 1999-11-02 | Hogue; William R. | Method of shaping a muzzle-loading firearm barrel |
| US5934976A (en) * | 1996-05-15 | 1999-08-10 | Denso Corporation | Method for grinding a taper surface and grinding apparatus using the same |
| CN2544884Y (en) * | 2002-06-04 | 2003-04-16 | 威力钻石工业股份有限公司 | Shaped mould hole polishing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1590022A (en) | 2005-03-09 |
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