CN104259526A - jig bushing - Google Patents
jig bushing Download PDFInfo
- Publication number
- CN104259526A CN104259526A CN201410536231.4A CN201410536231A CN104259526A CN 104259526 A CN104259526 A CN 104259526A CN 201410536231 A CN201410536231 A CN 201410536231A CN 104259526 A CN104259526 A CN 104259526A
- Authority
- CN
- China
- Prior art keywords
- jackscrew
- hole
- drill bushing
- bushing
- targeting part
- 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
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B49/00—Measuring or gauging equipment on boring machines for positioning or guiding the drill; Devices for indicating failure of drills during boring; Centering devices for holes to be bored
- B23B49/02—Boring templates or bushings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
The invention discloses a positioning device of drilling cutters and particularly relates to a jig bushing matched with a drilling clamp or drilling plate in use. The jig bushing comprises a jig bushing cap, a shaft sleeve neck, a guide portion and a jackscrew for jacking a cutter tightly. A jackscrew hole is arranged on the guide portion in the horizontal direction, and the jackscrew is totally imbedded in the jackscrew hole. Threads matched with each other are arranged on the inner wall of the jackscrew hole and the jackscrew. The length of the guide portion is equal to or larger than the sum of the drilling journey of the cutter and the depth of a positioning hole, and the guide portion and the positioning hole are in transition fit. The jig bushing overcomes the defect in the prior art of accidental slipping of the jig bushing during fast jig bushing replacement due to improper installation before the drilling procedure finishes, and enables workers to process a plurality of holes with the same specifications on the same work piece efficiently.
Description
Technical field
The invention belongs to the locating apparatus of drilling tool, particularly with boring grab body or bushing plate with the use of drill bushing.
Background technology
Drill bushing is also known as drill jig sleeve or drill jig sleeve.In use, (the present invention refers in particular to and is arranged on bushing plate or clamp body to need drill bushing to be arranged on the locating hole of bushing plate or clamp body, locating hole for drill bushing location), then cutter is through the pilot hole in the middle part of drill bushing, processes the workpiece be positioned at below bushing plate or clamp body.The effect of drill bushing, mainly be used for the axial location determining the sizing cutters such as drill bit, reamer, reamer, when the hole system that processing one group is parallel, and when the distance between this some holes has certain requirement, then utilize distributing position by the drill bushing of processing request to ensure the precision of above described holes heart distance.
Existing drill bushing comprises fixing drill bushing, renewable bushing and Quick-change drill bush, the dimensions standardization all of three kinds of drill bushings.Wherein fix drill bushing and locating hole interference fit, not easily change after wearing and tearing, be applicable to aperture precision and require higher production, for the hole machined that required precision is not high, then can adopt renewable bushing and Quick-change drill bush; As shown in Figure 1, 2, renewable bushing 1 realizes interference fits by lining 2 and locating hole, and drill bushing itself is suppressed by the screw 4 on side and is fixed on bushing plate 3, changes rapidly after being convenient to wearing and tearing; As shown in Figure 3, the difference of Quick-change drill bush and renewable bushing 1 is only, drill bushing has been put a cutting plane 12, and when being rotated counterclockwise renewable bushing 1, screw 4 place is just dropped in cutting plane 12.Drill bushing 1 part cutting plane 12 can be considered as below by screw 4 machine away rear left section, when then screw 4 place is just dropped in cutting plane 12, leave a blank below screw 4, so just can under the prerequisite not loosening screw 4, extract Quick-change drill bush easily, and by corresponding mode, the Quick-change drill bush quick change of another pilot hole internal diameter difference (to adapt to the change of tool diameter) is installed to locating hole place.When carrying out the Continuous maching operations such as brill bottom outlet, reaming, tapping to work same position, the diameter of each operation cutter for same is not quite similar, and just needs to adopt Quick-change drill bush.
In contrast, Quick-change drill bush be more convenient for change, be applied to Continuous maching produce in more for convenience.But when processing the hole of multiple same specification on same workpiece, adopt Quick-change drill bush still to deposit some defects.During as the screwed hole of eight same specifications will be made, workman just bores bottom outlet after the Quick-change drill bush of eight on drilling tool will being set in turn before brill thread Pilot hole, again Quick-change drill bush is taken off the Quick-change drill bush changed and mate with threading tool in turn after having bored bottom outlet, tapping again, processing time consuming is bothersome, and operating efficiency is lower.And before bottom outlet is made, Quick-change drill bush is not likely because being in place, excessive friction is produced between cutter and quick drill bushing, by frictional force effect, quick drill bushing can be rotated according to cutter direction of rotation and just be deviate from by above-mentioned cutting plane, this directly affects the carrying out of process operation, reduces operating efficiency.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of drill bushing being applicable to process multiple same specification hole on same workpiece, and this drill bushing contributes to workman and promotes operating efficiency, before avoiding occurring that drilling operating completes, and the phenomenon that quick drill bushing is surprisingly deviate from.
In order to solve the problems of the technologies described above, the invention provides following technical scheme:
Drill bushing, is arranged on the locating hole place of bushing plate or clamp body, comprises the axle housing cap, axle sleeve neck and the targeting part that connect successively from top to bottom, is provided with the pilot hole of through shaft cap bag, axle sleeve neck and targeting part in drill bushing; Also comprise the jackscrew for holding out against cutter, described targeting part laterally offers top wire hole, and this top wire hole is through hole, and jackscrew is embedded in top wire hole completely; Top wire hole inwall and jackscrew are provided with the screw thread of coupling mutually; The length of described targeting part equals or is longer than boring stroke and depth of positioning hole sum, targeting part and the locating hole interference fits of cutter.
Terminological interpretation: jackscrew, is also called holding screw, machine-processed rice screw and set screw, is a kind of machanical fastener, and majority is used between axle and cover.Jackscrew utilizes the fastening principle of screw to cover, change in location to occur to prevent axle and to be enclosed within use procedure axis, can be used for preventing the relative motion of axle and shaft room exactly.
Now carry out the continued operation of boring bottom outlet, reaming, tapping for 8 positions, place on same workpiece, give the operation principle of closing drill bushing of the present invention, the technique effect of drill bushing of the present invention is described:
1, with jackscrew, drill bushing is fixed on cutter, then drill bushing is extend in locating hole, until drill bushing passes this locating hole; And then startup cutter, hole.
Whole boring procedure, drill bushing can follow cutter to rotate together and feeding, relative motion can not occur between the two; Due to targeting part and locating hole interference fits, such drill bushing both can realize the position constraint to cutter, the relative sliding relative to locating hole can be realized again, because jackscrew is embedded in top wire hole completely, so the outer surface of targeting part does not have the projection affecting described interference fits.
The targeting part of cutter and drill bushing extend in locating hole, and both continue to move down, when tool tip is just resisted against workpiece, adjustment bushing plate and workpiece between spacing, make the lower end of targeting part lower than or flush in locating hole lower end; In order to ensure in whole boring journey, it (is only that part is passed through that targeting part passes through locating hole completely, the stability of drilling operation can be affected), and before cutter gets out and determines the degree of depth, (length of drill bushing strength is too small for drill bushing cap, substantially ignore) also can not contact in advance with bushing plate and affect tool feeding, so targeting part at least will equal the boring stroke of cutter higher than the length distance of locating hole upper end, and this just requires that the length of targeting part must equal or be longer than boring stroke and the depth of positioning hole sum of cutter.
It should be noted that in prior art herein and adopt lining to realize interference fits, the flexibility and the elasticity thereof that utilize lining, find through practice, if drill bushing of the present invention also adopts lining to realize the interference fits with locating hole, lining can be followed in the process of tool feeding at drill bushing, locating hole import department " wrinkling ", hinder drilling operation, affect operating efficiency; Described drill bushing of the present invention only utilizes the axis hole size relationship of its targeting part and locating hole to realize interference fits, although machining accuracy is not as good as fixing drill bushing, is applicable to the hole that rapid processing required precision is relatively low.
2, after having bored a bottom outlet, whole cutter and drill bushing have been taken out from locating hole, cutter and drill bushing need not have been dismantled, adopted as above method directly to process the bottom outlet at other seven places; Then use the drill bushing of broad and correspondence thereof instead, carry out ream operation, whole to pierce process consistent with boring the operation of bottom outlet; Finally use the drill bushing of threading tool and correspondence thereof instead, carry out the operation of tapping, whole to pierce process also consistent with boring the operation of bottom outlet.
In summary, when same workpiece is processed 8 same specification holes, a drill bushing can replace existing 8 Quick-change drill bushs; When such as boring 8 bottom outlets, as long as a drill bushing is fixed on corresponding cutters by jackscrew, do not need other seven drill bushings are installed; If a continuous print operation, as bored a continuous print operation bottom outlet, reaming, tapping, only need three different drill bushings to be separately fixed on corresponding cutter, and bushing plate does not have the drill bushing that stays in a upper operation, this just does not need to make corresponding dismantlement work yet yet.Whole process is time saving and energy saving, and multiple holes of same operation can continued operation, and work task efficiency obviously promotes, and drill bushing and cutter are fixed together and are synchronized with the movement, and can not meet accident the event of deviating from completely.
Further, described targeting part is provided with spirality and draws oil groove.
Due to drill bushing of the present invention and locating hole interference fits, consider service life and fiting effect, spy arranges spirality and draws oil groove, for lubricating drill bushing.
Further, its lower end of described targeting part is provided with chamfering.
Chamfering is set, is convenient to drill bushing and penetrates into locating hole.
Further, its end face of described jackscrew offers groove, and the central shaft of this groove overlaps with the central shaft of jackscrew.
Arrange and the groove of the concentricity axle of jackscrew at jackscrew end face, be convenient to workman like this and use the plug-in unit that mates with this groove shapes to rotate jackscrew.Because jackscrew embeds in top wire hole completely, wanting to screw jackscrew cannot by spanner one class device, can only be plugged into jackscrew end face and then be put by plug-in unit to turn jackscrew by form fit relation.
Further, described groove is square counterbore shape.Groove is regular polygon shape, is convenient to jackscrew uniform stressed, moves forward steadily; Being defined as square, is that cross section is that foursquare rod member is more compared with other regular polygon rod members, easily obtains because in the factory.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, technical solution of the present invention is further illustrated:
Fig. 1 is the front view of renewable bushing in prior art;
Fig. 2 is the top view of Fig. 1;
Fig. 3 is the front view of Quick-change drill bush in prior art;
The structural representation of a kind of embodiment of drill bushing of the present invention in Fig. 4;
The structural representation of its end face of jackscrew in the same embodiment of Fig. 5 and Fig. 4;
Renewable bushing 1, lining 2, bushing plate 3, screw 4, draw oil groove 5, top wire hole 6, jackscrew 7, chamfering 8, counterbore 9, targeting part 10, locating hole 11, cutting plane 12.
Detailed description of the invention
As shown in Figure 4, drill bushing drill bushing of the present invention, comprise axle housing cap, axle sleeve neck, targeting part 10 and jackscrew 7, the pilot hole of a from top to bottom through drill bushing is provided with in drill bushing, targeting part 10 is provided with and the cross through hole (i.e. top wire hole 6) being passed into pilot hole by targeting part 10 outer surface, this through hole internal thread is connected with a jackscrew 7, and this jackscrew 7 length is less than the length of cross through hole.
The degree of depth of length depending on bushing plate 3 locating hole 11 of the described targeting part 10 of the selection as concrete size and the boring stroke of cutter, 15mm as dark in locating hole 11, corresponding boring stroke (namely needing the degree of depth in the hole processed) is 20mm, then targeting part 10 can be selected at more than 35mm, but in order to save material, general surplus can control to be between 3mm ~ 10mm, and namely the length of targeting part 10 just controls between 38 ~ 45mm.
Targeting part 10 and the interference fits of locating hole 11, can be considered and narrowed by existing locating hole 11, also can be considered as existing drill bushing overstriking, finally makes targeting part 10 and locating hole 11 reach the effect of interference fits.The present embodiment adopts the former scheme, narrow by locating hole 11, specific practice chooses a fixing drill bushing, by this fixing drill bushing through the process of high-carbon steel carburizing and quenching be suitable for wear-resisting requirement, require that this fixing drill bushing external diameter realizes and existing locating hole 11 interference fit, internal diameter realizes the interference fits with drill bushing of the present invention.Due to the dimensional requirement standardization all of drill bushing interference and interference fits, can carry out selecting corresponding fit dimension see JB/T8045, no longer sew herein and state.
As shown in Figure 5, jackscrew 7 end face offers foursquare counterbore 9, for the rod member grafting with respective cross-section, and then drive jackscrew 7 to feeding in pilot hole, suppress the cutter penetrated in pilot hole.The geometrical central axis of described counterbore 9 is consistent with the geometrical central axis of jackscrew 7.The bottom of jackscrew 7 is most advanced and sophisticated, can arrange corresponding slotted eye on cutter, and presses in jackscrew 7 intervention with top.
Targeting part 10 is shown wall and is provided with and spirally draws oil groove 5, and lower end is provided with chamfering 8(60 degree by the mode of turning), be convenient to like this penetrate bushing plate 3 locating hole 11.
To one skilled in the art; under the prerequisite not departing from structure of the present invention; some distortion and improvement can also be made; shape as counterbore 9 also can be hexagon or pentagon; the angle of chamfering 8 also 70 degree or 75 degree; these also should be considered as protection scope of the present invention, and these all can not affect effect of the invention process and practical applicability.
Claims (5)
1. drill bushing, is arranged on the locating hole place of bushing plate or clamp body, comprises the axle housing cap, axle sleeve neck and the targeting part that connect successively from top to bottom, is provided with the pilot hole of through shaft cap bag, axle sleeve neck and targeting part in drill bushing; It is characterized in that: also comprise the jackscrew for holding out against cutter, described targeting part laterally offers top wire hole, and this top wire hole is through hole, and jackscrew is embedded in top wire hole completely; Top wire hole inwall and jackscrew are provided with the screw thread of coupling mutually; The length of described targeting part equals or is longer than boring stroke and depth of positioning hole sum, targeting part and the locating hole interference fits of cutter.
2. drill bushing as claimed in claim 1, is characterized in that: described targeting part is provided with spirality and draws oil groove.
3. drill bushing as claimed in claim 1, is characterized in that: its lower end of described targeting part is provided with chamfering.
4. the drill bushing as described in claim 1,2 or 3, is characterized in that: its end face of described jackscrew offers groove, and the central shaft of this groove overlaps with the central shaft of jackscrew.
5. drill bushing as claimed in claim 4, is characterized in that: described groove is square counterbore shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410536231.4A CN104259526A (en) | 2014-10-13 | 2014-10-13 | jig bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410536231.4A CN104259526A (en) | 2014-10-13 | 2014-10-13 | jig bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104259526A true CN104259526A (en) | 2015-01-07 |
Family
ID=52151171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410536231.4A Pending CN104259526A (en) | 2014-10-13 | 2014-10-13 | jig bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104259526A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106807979A (en) * | 2015-11-30 | 2017-06-09 | 江苏核电有限公司 | Reactor coolant pump journal bearing stationary ring spare part processing unit (plant) |
| CN109396502A (en) * | 2018-12-11 | 2019-03-01 | 迪皮埃风电叶片大丰有限公司 | A kind of multi-functional locating holes tooling |
-
2014
- 2014-10-13 CN CN201410536231.4A patent/CN104259526A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106807979A (en) * | 2015-11-30 | 2017-06-09 | 江苏核电有限公司 | Reactor coolant pump journal bearing stationary ring spare part processing unit (plant) |
| CN106807979B (en) * | 2015-11-30 | 2018-11-02 | 江苏核电有限公司 | Reactor coolant pump journal bearing stationary ring spare part processing unit (plant) |
| CN109396502A (en) * | 2018-12-11 | 2019-03-01 | 迪皮埃风电叶片大丰有限公司 | A kind of multi-functional locating holes tooling |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150107 |
|
| WD01 | Invention patent application deemed withdrawn after publication |