CN1683801A - Linear slider and its producing method - Google Patents
Linear slider and its producing method Download PDFInfo
- Publication number
- CN1683801A CN1683801A CN 200410033281 CN200410033281A CN1683801A CN 1683801 A CN1683801 A CN 1683801A CN 200410033281 CN200410033281 CN 200410033281 CN 200410033281 A CN200410033281 A CN 200410033281A CN 1683801 A CN1683801 A CN 1683801A
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- Prior art keywords
- slide block
- return port
- linear slide
- section
- linear
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- 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.)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C29/00—Bearings for parts moving only linearly
- F16C29/04—Ball or roller bearings
- F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
- F16C29/0602—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly
- F16C29/0611—Details of the bearing body or carriage or parts thereof, e.g. methods for manufacturing or assembly of the return passages, i.e. the passages where the rolling elements do not carry load
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C29/00—Bearings for parts moving only linearly
- F16C29/04—Ball or roller bearings
- F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
- F16C29/0633—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides
- F16C29/0635—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are provided as bores in a main body of the U-shaped carriage, e.g. the main body of the U-shaped carriage is a single part with end caps provided at each end
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bearings For Parts Moving Linearly (AREA)
Abstract
The present invention discloses a kind of linear slider and its making process. The linear slider is provided with rolling canal and reflux hole with square cross section. In order to facilitate the making of the slider, the present invention adopts dewaxing casting process and conic section and stepped section design, and has easy making of reflux hole and high stability.
Description
Technical field
The present invention relates to a kind of linear slide block and manufacture method thereof, promptly in order to the slide block of the linear slide rail of guiding movement mechanism movement direction, linear slide rail wherein comprises linear ball slide rail and linear roller sliding rail.
Background technique
Linear slide rail is important mechanical component, is used widely in the fields such as precision optical machinery, automation industry, semiconductor industry, medical equipment and aerospace industry at present.Its main function is to use ball (ball) or the rolling of roller (roller) and reduces the frictional resistance of mechanism when moving, it is more laborsaving when mechanism is moved, and energy saving, simultaneously because the friction minimizing, the wearing and tearing of surface of contact and the minimizing that heats up, make mechanism precision and life-span promote in pairs, and the also significantly lifting forward of the travelling speed limit of mechanism, so linear slide rail can deserve to be called crucial in recent years mechanical transmission component.Usually linear slide rail can be divided into two classes, and the first is used the ball transmission, is called linear ball slide rail; Another kind ofly be to use the roller transmission, be called linear roller sliding rail; Yet no matter be ball or roller sliding rail, because functions such as (ball or the roller) carrying that needs to have the rolling element of providing on its slide block (slider) and circulating reflux, so relative complex on the structure, and the passage and the cost height of processing.
The slide block (with reference to Figure 10) of linear ball slide rail, owing to need to be provided with the function that rolling element (ball) carrying is provided on its slide block 8, on slide block 8, sliding channel 81 need be set, sliding channel 81 is tracks that rolling element flows, load in order to load bearing mechanism, therefore sliding channel 81 surfaces need have the demand of very high hardness (usually at HRC more than 58) with the wear resistance that reaches material, and near the materials the sliding channel 81 also need to have suitable yield strength (YieldingStrength) and destroy to avoid fatigue of materials simultaneously.In addition, for rolling element can oppositely be moved to reach the purpose that Infinite Cyclic is rolled, on slide block 8, in addition return port 82 need be set, return port 82 is a through hole, general return port is the hole that processes a circular cross-section in the mode of machining (boring), end face by slide block extends through the other end, so that rolling element can pass through, therefore the size of return port 82 must be bigger than rolling element, allowing that rolling element can pass through, and can not be too greatly to avoid rolling element jammed and cause motion to have some setbacks in return port 82; Because the length of slide block 8 must be enough long so that enough bearing loads to be provided, so the degree of depth of return port 82 also can be bigger, usually the degree of depth in hole is about ten times of aperture, has suitable difficulty in the processing, and the drill bit of boring is as long as slightly change, promptly can cause the boring skew, make the exit position difference of return port 82 on slide block 8 both ends of the surface; A kind of linear ball slide rail design (for example U. S. Patent 6042269 or No. 6085420 patents) that keeps chain (retainer) of installing additional is arranged recently, because its return port must be allowed rolling element simultaneously and keep chain to pass through, therefore its return port need be provided with a wing ditch 821 in addition in the both sides of circular cross-section, and this wing ditch 821 keeps the chain (not shown) to pass through in order to allow; Because the processing of wing ditch 821 is difficulty (needing to use the broaching tool of shaping to draw traditionally) very, therefore manufacture method is to process a large through-hole 84 above slide block 8 earlier at present, after the heat treatment sclerosis, earlier through grinding, again with in large through-hole 84, the be shaped plastic cement filling block 85 of a plastic cement material of the patent system making process of accurate injection molding, this manufacture complexity and difficulty height, and the Kong Yueda that is drilled with in the confined space of the slide block 8 then structure of slide block is poor more, therefore is drilled with the structural strength that large through-hole 84 will reduce slide block 8 in slide block 8.Also need process screw 83 on the two ends of this external slide block 8 in the mode of processing; screw 83 is in order to be installed on the end cap (not shown) on slide block 8 both ends of the surface; though processing screw hole is not difficult; but each screw 83 and return port 82 all have strict relative position requirement; therefore the degree of difficulty of processing also thereby increase; and because the precision of machine or the factor of cutter, also usually can cause the relative position mistake that processes, and cause the defective situation of slide block quality to take place.
On the other hand, for linear roller sliding rail (with reference to Figure 11), owing to need to be provided with the function that rolling element (roller) carrying is provided on its slide block 9, on slide block 9, equally sliding channel 91 need be set, this sliding channel 91 is tracks that rolling element rolls, in order to the load of load bearing mechanism, thus sliding channel 91 surface and near materials also need to have suitable hardness and yield strength, to avoid material abrasion and fatigue ruption.In addition, for rolling element can oppositely be moved to reach the purpose that Infinite Cyclic is rolled, on slide block 9, also return port 92 need be set, return port 92 is a through hole, but owing to need to cooperate the side profile of roller, therefore the cross section of return port 92 must be designed to squarely, and the hole of circular cross-section is easier to processing, and degree of difficulty that the hole of square-section then processes and cost are very high; At present the way of using is the large through-hole 94 that is drilled with earlier a circle on slide block 9, fill in wherein (for example USP6109798 number) with a plastic cement filling block 95 again, so with the same situation that the structural strength reduction is arranged of situation of linear ball slide rail; In addition, when linear roller sliding rail uses the maintenance chain, because its return port must be allowed rolling element simultaneously and keep chain to pass through, therefore its return port 92 need be provided with a wing ditch 921 in addition near a side of sliding channel 91, wing ditch 921 keeps chain to pass through in order to allow, in addition, also needing to be provided with accordingly one on the sliding channel 91 of slide block escapes ditch 911 and keeps chain to pass through to allow; Known manufacture also is to get out earlier a large through-hole 94 on slide block 9, fill wherein (for example USP6390678 number) with the plastic cement filling block 95 that is shaped in advance again, this manufacture method is the processing procedure complexity not only, and the intensity of plastic cement is far below ferrous materials, so the structural strength of slide block also will reduce.In addition, also need process screw 93 in the mode of processing on the both ends of the surface of slide block 9, screw 93 has the problem of relative position equally, therefore the degree of difficulty height of processing.
Therefore, known linear slide block and real the still having of production method thereof need improved again places.
For manufacture cost is descended, casting, forge hot and hot extrude all are admissible processing procedure modes, but traditional modes such as casting, forge hot and hot extrude are all had any problem for the moulding of return port, and make the finished product after the shaping still need be through the processing of multi-pass, so manufacture cost be difficult to descend.
Lost wax casting is the higher casting method of a kind of precision, and its dimensional accuracy is higher, so lost wax casting may be a method that solves the linear slide block production problem.But lost wax casting is not good for the manufacturing capacity in hole, for its hole depth of through hole (pre-and post perforative hole) (because be through hole, hole depth is the total length in hole) and the aperture ratio can only accomplish in four times, but unfortunately, usually the hole depth aperture of linear slide block return port is than about ten times, at least can be less than five times, this causes lost wax casting and can't be as the manufacture method of the linear slide block that contains return port.
Summary of the invention
Technical problem to be solved by this invention be to provide a kind of easy to manufacture, cost is low, the easy linear slide block of manufacturing, the situation that it can be avoided return port and departs from because boring is bad.
Another technical problem that will solve of the present invention is to provide a kind of method of making linear slide block, the structural strength that reduces slide block to avoid filling a large amount of plastic parts in return port.
For solving the problems of the technologies described above, technical solution of the present invention is:
The return port that provides the rolling element circulating reflux to use is provided a kind of linear slide block, and this return port is a through hole, and the aperture of intermediate portion is less than the aperture in outlet port, two ends.
The section of this return port is square.
On this return port, be parallel to this return port and be provided with wing ditch.
The sliding channel of described slide block is provided with escapes ditch.
This return port includes a tapered section; And the full cone angle of this tapered section is more than 1 degree.
This return port comprises class's section; And also can comprise tapered section in the middle of it.
These slide block both ends of the surface are provided with screw.
A kind of manufacture method of linear slide block, the return port that provides the rolling element circulating reflux to use is provided described linear slide block, the aperture of this return port intermediate portion is less than the aperture in outlet port, two ends, and method manufacturing with lost wax casting, wherein employed cured mould comprises right mould and left mould in the lost wax casting, and the assembly line of right mould and left mould is arranged on the neutral position of return port.
The intermediate portion of this return port is processed through boring behind lost wax casting again.
After adopting such scheme, because the present invention is arranged to the return port of slide block in the aperture of the aperture of intermediate portion less than the outlet port, two ends, it can make things convenient for cured moulding/demoulding.Through discovering that the subject matter of lost wax casting in the through hole manufacturing is the knockout course of cured mould since cured be softer material relatively, when cured moulding/demoulding, injure cured surface easily.In order to use lost wax casting to make linear slide block, the present invention becomes less with the aperture design of return port intermediate portion, passes through as long as promptly can allow the rolling element of linear slide block; And bigger in the aperture in outlet port, two ends, so can make things convenient for the demoulding of cured mould.For the design of return port of the present invention, the main means that adopt are for to be provided with tapered section or class's section in return port: when tapered section was set, the tapering of return port can make things convenient for the demoulding of cured mould in the lost wax casting process; A return port can be divided into several sections different apertures and class's section is set, make independent one section class's section length and be not more than four times of aperture, the demoulding of therefore convenient cured mould.Therefore, have the return port of tapered section or the return port that (reaching) has class's section design, cooperate the lost wax casting mode, can make things convenient for the manufacturing of linear slide block, not only manufacture cost reduces, and the stability of product size is also high.
In addition, cooperate the design of return port among the present invention, the present invention also proposes a kind of new design of cured mould simultaneously, even the return port stage casing of the assembly line online design slide block of cured mould, in order to the demoulding, so can make the hole depth of the return port of linear slide block can reach more than five times of return port minimum-value aperture.
Just because of linear slide block of the present invention is that one processes, therefore easy to manufacture, cost is low, and the situation that does not have return port and depart from because boring is bad also can be avoided filling a large amount of plastic parts in return port and the structural strength that reduces slide block simultaneously.
Description of drawings
Fig. 1 is the linear ball slide block of the present invention first embodiment's a schematic perspective view;
Fig. 2 is a kind of sectional view of slide block return port among Fig. 1;
Fig. 3 is the another kind of sectional view of slide block return port among Fig. 1;
Fig. 4 is the cured moulding/demoulding schematic representation of Fig. 3;
Fig. 5 is the third structure sectional view of slide block return port among Fig. 1;
Fig. 6 is the 4th a kind of structure sectional view of slide block return port among Fig. 1;
Fig. 7 is near the assembled sectional view class's section among Fig. 5;
Fig. 8 is the linear ball slide block of the present invention second embodiment's a schematic perspective view;
Fig. 9 is the schematic perspective view of linear roller slide block of the present invention;
Figure 10 is the schematic perspective view of known linear ball slide block;
Figure 11 is the schematic perspective view of known linear roller slide block.
Among the figure:
1 slide block, 11 sliding channels, 12 return ports
121 wing ditch 122 tapered sections 123 tapered sections
124 straight hole sections, 125 class's sections, 126 class's sections
12 screws, 2 slide blocks, 21 sliding channels
211 escape ditch 22 return ports 221 wing ditches
23 screws, 41 right mould 42 left moulds
43 assembly lines, 51 tumblers, 52 tumblers
8 slide blocks, 81 sliding channels, 82 return ports
821 wing ditch 83 screws 84 large through-holes
85 plastic cement filling blocks, 9 slide blocks, 91 sliding channels
911 escape ditch 92 return ports 921 wing ditches
93 screws, 94 large through-holes, 95 plastic cement filling blocks
Embodiment
As shown in Figure 1, it is the linear ball slide block of the present invention first embodiment's schematic perspective view, slide block 1 among the figure is provided with two sliding channels 11, sliding channel 11 is tracks that rolling element (ball) rolls, load in order to load bearing mechanism, therefore sliding channel 11 surfaces need have the demand of very high hardness with the wear resistance that reaches material, and near the materials the sliding channel 11 also need to have suitable yield strength and destroy to avoid fatigue of materials simultaneously.In addition, for rolling element can oppositely be moved to reach the purpose that Infinite Cyclic is rolled, on slide block 1, cooperate each bar sliding channel 11 that a return port 12 respectively is set, return port 12 is a through hole, and its hole depth is more than five times of aperture, end face by slide block 1 extends through the other end, its size is more bigger than rolling element, can pass through to allow rolling element, and can be in the hole not jammed and cause having some setbacks; For the end cap (not shown) on slide block 1 both ends of the surface is fixed, on the both ends of the surface of slide block 1, respectively be provided with screw 13 with fixing end cap.Manufacturing for convenient linear ball slide block 1, linear ball slide block 1 of the present invention uses the manufactured of doing of lost wax casting, but in order to cooperate the manufacture method of lost wax casting, the present invention becomes less with the aperture design of return port intermediate portion, passes through as long as promptly can allow the rolling element of linear slide block; And bigger in the aperture in outlet port, two ends, so with the conveniently demoulding of cured mould.
Fig. 2 is a kind of sectional view of the linear ball slide block of the present invention return port, in return port 12, comprise a tapered section 122 and another tapered section 123, because tapered section 122 and another tapered section 123 have tapering, therefore can make things convenient for the demoulding of cured mould in the lost wax casting process; Fig. 3 is the another kind of sectional view of the linear ball slide block of the present invention return port, return port 12 is combined by a tapered section 122, another tapered section 123 and a straight hole section 124, wherein tapered section 122 and another tapered section 123 have tapering, therefore can make things convenient for the demoulding of cured mould in the lost wax casting process, straight hole section 124 is then in order to increase the total length (hole depth) of return port 12.
Fig. 4 is the cured moulding/demoulding schematic representation of Fig. 3, wherein the employed cured mould of lost wax casting is to be combined by right mould 41 and left mould 42, and the assembly line 43 of 42 of right mould 41 and left moulds is arranged on the neutral position of return port 12, and tapered section wherein 122 and another tapered section 123 all have tapering, this tapering just in time forms the demodular angle of mold releasability, so can make things convenient for the demoulding of right mould 41 and left mould 42.For the easy demoulding, the tapering of tapered section can design more than full cone angle 1 degree, and in order to the demoulding, and full cone angle is preferable in 2 degree left and right sides effects.When needing very dark return port for some design, after available lost wax casting is provided the linear ball slide block of tapered section 122 and another tapered section 123, mode with boring processing processes straight hole section 124 again, because the function of straight hole section 124 allows that just rolling element passes through to get final product, precision and positioning accuracy request on not having to cooperate, so under return port had been had the situation of tapered section, the processing of straight hole section 124 was relatively easy.
Fig. 5 is the third structure sectional view of the linear ball slide block of the present invention return port, and the return port 12 among the figure also includes two class's sections 125 and 126 in addition except that comprising a tapered section 122 and another tapered section 123; Wherein tapered section 122 and another tapered section 123 have tapering, it can make things convenient for the demoulding of cured mould in the lost wax casting process, and class's section 125 and 126 is because the aperture increasing, cured intensity increases, event is not easy to produce in the process of the demoulding bad, and the setting of class's section 125 and 126 also can increase the total length (hole depth) of return port 12.Fig. 6 is the 4th a kind of structure sectional view of the linear ball slide block of the present invention return port, and the setting of the straight hole section 124 among the figure can increase the total length (hole depth) of return port 12.
Fig. 7 is near the assembled sectional view class's section among Fig. 5, the tumbler 51 and 52 that provides rolling element to turn to is provided in class's section 126 among the figure, tumbler 51 and 52 usefulness are so that rolling element changes moving direction, and the large through-hole 84 in class of the present invention section 126 and tumbler 51 and 52 designs and the known techniques is differentiated: the large through-hole 84 in the known techniques is holes of running through, decline influence to structural strength is very big, and class's section 126 only is arranged on the sub-fraction at return port 12 two ends, and is little to the decline influence of structural strength.
Fig. 8 is the linear ball slide block of the present invention second embodiment's a schematic perspective view, increases the setting of wing ditch 121 among the figure, because the present invention makes slide block 1 in the lost wax casting mode, therefore sets up the degree of difficulty that wing ditch 121 can obviously not increase making.
Fig. 9 is the schematic perspective view of linear roller slide block of the present invention, identical with linear ball slide block, slide block 2 is provided with four sliding channels 21, sliding channel 21 is tracks that rolling element rolls, load in order to load bearing mechanism, therefore sliding channel 21 surfaces and near material also need to have suitable hardness and yield strength, to avoid material abrasion and fatigue ruption; In addition, for rolling element can oppositely be moved to reach the purpose that Infinite Cyclic is rolled, also corresponding each bar sliding channel 21 is provided with a return port 22 on slide block 2, and this return port 22 is the through hole of a square section, to cooperate the side profile of roller, smooth-going the passing through of its tolerable roller; For the end cap (not shown) on slide block 2 both ends of the surface is fixed, on the both ends of the surface of slide block 2, respectively be provided with two screws 23 with fixing end cap; In addition, when linear roller sliding rail uses the maintenance chain, because its return port must be allowed rolling element simultaneously and keep chain to pass through, therefore its return port 22 need be provided with a wing ditch 221 in addition near a side of sliding channel 21, wing ditch 221 is parallel to return port 22, keep chain to pass through in order to allow, but when linear ball slide rail does not use the maintenance chain, then do not need to be provided with wing ditch 221; In addition, keep chain discord sliding channel 21 to produce interfering, on the sliding channel 21 of slide block, also need to be provided with accordingly one and keep chain to pass through to allow with the sliding channel 21 parallel ditches 211 of escaping in order to make.The manufacture method of slide block 2 is identical with linear ball slide block of the present invention, also be to use the lost wax casting method to make, and the aperture that its return port 22 also is designed to intermediate portion is beneficial to the demoulding of cured mould than form small in ends; And the design of tapered section and class's section also can be used than small in ends in the aperture that return port 22 is designed to intermediate portion.
Linear slide block of the present invention and manufacture method thereof are used the processing procedure of lost wax casting, and be therefore easily manufactured and cost descends; As long as because the present invention becomes less with the aperture design of return port intermediate portion, therefore in whole lost wax casting processing procedure, cured moulding/demoulding is no problem, and the finished size reproducibility height behind the correct then lost wax casting of the size of cured mould, can avoid processing the problem of variation.In addition, need not process a large through-hole in the present invention, fill with a large amount of plastic cement filling blocks again, so the slide block of linear slide rail of the present invention does not have the problem that known slide block structure intensity reduces yet.
Claims (11)
1, the return port that provides the rolling element circulating reflux to use is provided a kind of linear slide block, and this return port is a through hole, it is characterized in that:
The aperture of described return port intermediate portion is less than the aperture in outlet port, two ends.
2, linear slide block as claimed in claim 1 is characterized in that: the section of this return port is square.
3, linear slide block as claimed in claim 1 or 2 is characterized in that: on this return port, be parallel to this return port and be provided with wing ditch.
4, linear slide block as claimed in claim 2 is characterized in that: the sliding channel of described slide block is provided with escapes ditch.
5, linear slide block as claimed in claim 1 is characterized in that: this return port includes a tapered section.
6, linear slide block as claimed in claim 5 is characterized in that: the full cone angle of this tapered section is more than 1 degree.
7, linear slide block as claimed in claim 1 is characterized in that: this return port comprises class's section.
8, linear slide block as claimed in claim 7 is characterized in that: these return port two ends are class's section, and the centre comprises tapered section.
9, linear slide block as claimed in claim 1 is characterized in that: these slide block both ends of the surface are provided with screw.
10, a kind of manufacture method of linear slide block, the return port that provides the rolling element circulating reflux to use is provided described linear slide block, it is characterized in that:
The aperture of described return port intermediate portion is less than the aperture in outlet port, two ends, and with the method manufacturing of lost wax casting, wherein employed cured mould comprises right mould and left mould in the lost wax casting, and the assembly line of right mould and left mould is arranged on the neutral position of return port.
11, as the manufacture method of linear slide block as described in the claim 10, it is characterized in that: the intermediate portion of this return port behind lost wax casting again through boring processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410033281 CN1683801A (en) | 2004-04-14 | 2004-04-14 | Linear slider and its producing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410033281 CN1683801A (en) | 2004-04-14 | 2004-04-14 | Linear slider and its producing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1683801A true CN1683801A (en) | 2005-10-19 |
Family
ID=35263245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410033281 Pending CN1683801A (en) | 2004-04-14 | 2004-04-14 | Linear slider and its producing method |
Country Status (1)
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| CN (1) | CN1683801A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100348353C (en) * | 2006-04-29 | 2007-11-14 | 林怡如 | Manufacturing method of rolling slide block of straight rolling guides |
| CN113427215A (en) * | 2021-07-05 | 2021-09-24 | 丽水市鑫飞自动化科技有限公司 | Machining process of linear sliding block |
-
2004
- 2004-04-14 CN CN 200410033281 patent/CN1683801A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100348353C (en) * | 2006-04-29 | 2007-11-14 | 林怡如 | Manufacturing method of rolling slide block of straight rolling guides |
| CN113427215A (en) * | 2021-07-05 | 2021-09-24 | 丽水市鑫飞自动化科技有限公司 | Machining process of linear sliding block |
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