CN204221425U - Boring grab on the milling machine of easy switching - Google Patents

Boring grab on the milling machine of easy switching Download PDF

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Publication number
CN204221425U
CN204221425U CN201420676552.XU CN201420676552U CN204221425U CN 204221425 U CN204221425 U CN 204221425U CN 201420676552 U CN201420676552 U CN 201420676552U CN 204221425 U CN204221425 U CN 204221425U
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China
Prior art keywords
drill bit
milling machine
tapered sleeve
milling
clamping hole
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CN201420676552.XU
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Chinese (zh)
Inventor
宋和俊
高强
范洁雄
凌毅
戴艳珊
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LIANYUNGANG KAIDI HEAVY INDUSTRY TECHNOLOGY Co Ltd
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LIANYUNGANG KAIDI HEAVY INDUSTRY TECHNOLOGY Co Ltd
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Abstract

Boring grab on the milling machine that the utility model discloses a kind of easy switching, described boring grab comprises milling machine milling chuck and drill bit tapered sleeve, described is that the middle part of milling machine milling chuck is provided with fixing endoporus, described drill bit tapered sleeve comprises bare terminal end and stiff end, the stiff end of described drill bit tapered sleeve is fixed in the fixing endoporus of milling machine milling chuck by the mode that two ends are welded, described stiff end is provided with drill bit clamping hole, described drill bit clamping hole is the drill bit clamping hole of taper, the surface roughness of the inner surface of described drill bit clamping hole is 1.0 ~ 3.2, described drill bit clamping hole internal fixtion is connected with the drillstock of drill bit, the utility model by directly on milling machine milling chuck improve, intercept wherein one section, coordinate the drill bit tapered sleeve of restriction simultaneously, can processing be completed through clamped one time centering and dismounting, the utility model reduces the time of the secondary process of hole plate type part, and operating efficiency improves, and improves borehole accuracy.

Description

Boring grab on the milling machine of easy switching
Technical field
The utility model relates to the field that improves equipment of milling machine, particularly relates to one and improves original fixture, changes boring grab on milling machine easily.
Background technology
The milling machine used in China's field of machining, the milling machine more than 60% particularly used in the private enterprise, small national enterprise, teaching unit and western backward areas is still some old equipment, and on old-fashioned milling machine, often application boring grab is old-fashioned milling machine milling chuck (as shown in Figure 1).
The length of old-fashioned milling machine milling chuck is longer, cannot accurately locate its axiality, need workpiece clamping, dismounting repeatedly during the boring of these milling machines in practical work process, need after installation is complete, aim at the center of drill bit and milling chuck, need centering just can carry out normal industrial production 2 times, in actual production process, more bit change wastes a large amount of time, and then reduce the normal production efficiency of enterprise, bring very large puzzlement to enterprise.
Utility model content
For above-mentioned Problems existing, it is simple that the utility model object is to provide a kind of structure, is convenient for changing, boring grab on the modified milling machine that operating efficiency is high.
In order to achieve the above object, the technical solution adopted in the utility model is as follows: boring grab on a kind of milling machine of easy switching, described boring grab comprises milling machine milling chuck and drill bit tapered sleeve, described is that the middle part of milling machine milling chuck is provided with fixing endoporus, the outside of described milling machine milling chuck is provided with the symmetrical fixed block installed, described drill bit tapered sleeve comprises bare terminal end and stiff end, the stiff end of described drill bit tapered sleeve is fixed in the fixing endoporus of milling machine milling chuck by the mode that two ends are welded, described fixed block is fixedly connected on the chuck of milling machine, described bare terminal end is fixedly connected in the inner hole of spindle of milling machine, described stiff end is provided with drill bit clamping hole, described drill bit clamping hole is the drill bit clamping hole of taper, the surface roughness of the inner surface of described drill bit clamping hole is 1.0 ~ 3.2, described drill bit clamping hole internal fixtion is connected with the drillstock of drill bit.
Improve as one of the present utility model, the overall external taper of described drill bit tapered sleeve is identical with the tapering of milling machine spindle endoporus.Tapering is 1:19.002,3 ° 0 ' 52.4 ", add simultaneously and must ensure that inside and outside taper hole is coaxial man-hour, because the axiality of single unit system of the present utility model is for this reason high, without the need to again calibrating after dismounting, the saving bit change-over time.
Improve as one of the present utility model, when the diameter of described drill bit is in 25 mm ~ 40 mm, the tapering of drill bit clamping hole differs a tapering grade with the external taper of drill bit tapered sleeve, so the tapering of drillstock tapering and drill bit tapered sleeve differs a tapering grade, wherein tapering grade has No. 0, Mohs cone, No. 1, Mohs cone ... No. 6, Mohs cone, described drill bit tapered sleeve adopts one-stage drill bits could tapered sleeve, directly drillstock is installed to fixture inner cone.
Improve as one of the present utility model, when the diameter of described drill bit is in 5 mm ~ 25 mm, described multistage drill bit tapered sleeve comprises multiple drill bit tapered sleeve be set in together, two adjacent drill bit tapered sleeves external taper differ a tapering grade, when bit diameter is less, the tapering of its drillstock and the tapering of milling machine spindle endoporus differ multiple tapering grade, therefore drill bit tapered sleeve used adopts multistage drill bit tapered sleeve, in installation process, multistage tapered sleeve connects successively, such as No. 0 tapered sleeve is installed to No. 1 tapered sleeve, finally installation is applicable to drill bit tapered sleeve to be fixedly mounted on milling machine.
The utility model has the advantage of:
1) apply after milling machine dedicated fixture for drilling, in process, particularly need the operating procedure of more bit change, the process velocity of its hole plate type part is obviously accelerated, and man-hours requirement shortened to 1.8 hours from original 3.5 hours.
2) apply after milling machine dedicated fixture for drilling, originally needed by workpiece repeatedly clamping, dismounting, centering just can complete for 2 times, now by directly milling cutter being replaced by drill bit on milling machine, just can be processed with dismantling by clamped one time centering.
3) application of the design improvement of milling machine dedicated fixture for drilling, reduce the secondary process operation of hole plate type part, original operation simplified, process time shortens, and operating efficiency significantly improves, and improves borehole accuracy simultaneously.
Accompanying drawing explanation
Fig. 1 is milling machine milling chuck structure diagram in prior art;
Fig. 2 is the utility model disassemblying structure sketch;
Fig. 3 is the utility model package assembly sketch;
Fig. 4 is that the utility model installs one-stage drill bits could tapered sleeve structure diagram;
Fig. 5 is that the utility model installs multistage drill bit tapered sleeve structure diagram;
Fig. 6 is that the utility model is arranged on milling machine boring inner structure sketch.
Wherein, 1 milling machine milling chuck, 1-1 fixed block, 1-2 fixes endoporus, 2 drill bit tapered sleeves, 2-1 bare terminal end, 2-2 drill bit clamping hole, 3 welding positions, the drill bit of 4 diameter 25 mm ~ 40 mm, the drill bit of 5 diameter 5 mm ~ 25 mm, 6 multistage drill bit tapered sleeves; 7 milling machines, 8 drillstocks.
Detailed description of the invention
Illustrate below in conjunction with accompanying drawing and with detailed description of the invention, the utility model to be described in further detail.
embodiment 1:as Fig. 2, boring grab on the milling machine of a kind of easy switching shown in 3 and 6, described boring grab comprises milling machine milling chuck 1 and drill bit tapered sleeve 2, described is that the middle part of milling machine milling chuck 1 is provided with fixing endoporus 1-2, the outside of described milling machine milling chuck 1 is provided with the symmetrical fixed block 1-1 installed, described drill bit tapered sleeve 2 comprises bare terminal end 2-1 and stiff end, the stiff end of described drill bit tapered sleeve 2 is fixed in (welding position 3 as shown in Figure 2) in the fixing endoporus 1-2 of milling machine milling chuck 1 by the mode that two ends are welded, described fixed block 1-1 is fixedly connected on the chuck of milling machine 7, described bare terminal end 2-1 is fixedly connected in the inner hole of spindle of milling machine 7, described stiff end is provided with drill bit clamping hole 2-2, described drill bit clamping hole 2-2 is the drill bit clamping hole of taper, the surface roughness of the inner surface of described drill bit clamping hole 2-2 is 1.0 ~ 3.2, described drill bit clamping hole 2-2 internal fixtion is connected with the drillstock 8 of drill bit.
embodiment 2:as Fig. 1,2,3, shown in 4 and 5, milling machine milling chuck 1 longer for original length blocks (as shown in Figure 1) by the present invention, get one end that it is provided with fixed block 1-1, by being fixedly connected with the drill bit tapered sleeve 2 limited, carry out in the process of welding at drill bit tapered sleeve 2 stiff end with milling machine milling chuck 1, adopt interrupted welding, eliminate the impact of welding deformation, ensure the axiality of drill bit tapered sleeve 2 stiff end and milling machine milling chuck 1; Boring grab of the present invention mainly drives bit by the frictional force between taper-face contact and coarse surface, therefore it is defined as 1.0 ~ 3.2 to the surface roughness of drillstock 8 and drill bit clamping endoporus 2-2, in use need to prevent the surface of drillstock 8 and drill bit tapered sleeve 2 from having wearing and tearing, greasy dirt, foreign matter, cause the contact area and the reduction frictional force that reduce the conical surface, cause drillstock 8 to come off.
embodiment 3:as shown in Figures 2 and 3, the overall external taper of described drill bit tapered sleeve 1 is identical with the tapering of the inner hole of spindle of milling machine 7; Its tapering is 1:19.002,3 ° 0 ' 52.4 ", add simultaneously and must ensure inside and outside taper hole coaxial (being accurate to 0.01mm) man-hour, because the axiality of single unit system of the present utility model is for this reason high, without the need to again calibrating after dismounting, the replacing construction of saving drill bit.
embodiment 4:as shown in figs. 4 and 6, in actual mechanical process, the diameter of the drill bit adopted is 25 mm, because the tapering of drill bit clamping hole 2-2 differs a tapering grade with the external taper of drill bit tapered sleeve 2, therefore the tapering of drillstock 8 and the tapering of drill bit tapered sleeve 2 differ a tapering grade, described drill bit tapered sleeve 2 adopts one-stage drill bits could tapered sleeve, directly drillstock 8 is installed to fixture drill bit clamping hole 2-2, also only downward percussive drill bit shank end is needed during dismounting, convenient and swift, whole replacing construction was at about 20 seconds.
embodiment 5:as illustrated in Figures 5 and 6, in actual mechanical process, the diameter of the drill bit adopted is 10 mm, because the tapering of drill bit clamping hole 2-2 differs a tapering grade with the external taper of drill bit tapered sleeve 2, when the tapering of drillstock 8 and the tapering of drill bit tapered sleeve 2 differ three tapering grades, need to change through three multistage drill bit tapered sleeves 6, after 10mm drillstock is installed to applicable drill bit tapered sleeve, then the multistage drill bit tapered sleeve 6 of different tapering grade is installed successively, the utility model is arranged on milling machine 7 the most at last, also be knock each tapered sleeve end successively during dismounting, dismantle successively, convenient and swift, whole replacing construction was at about 1 minute.
It should be noted that, above-mentioned is only preferred embodiment of the present utility model, is not used for limiting protection domain of the present utility model, and equivalents done on the basis of above-described embodiment all belongs to protection domain of the present utility model.

Claims (6)

1. boring grab on the milling machine of an easy switching, described boring grab comprises milling machine milling chuck and drill bit tapered sleeve, the middle part of described milling machine milling chuck is provided with fixing endoporus, the outside of described milling machine milling chuck is provided with the symmetrical fixed block installed, it is characterized in that, described drill bit tapered sleeve comprises bare terminal end and stiff end, the stiff end of described drill bit tapered sleeve is fixed in the fixing endoporus of milling machine milling chuck by the mode that two ends are welded, described fixed block is fixedly connected on the chuck of milling machine, described bare terminal end is fixedly connected in the inner hole of spindle of milling machine, described stiff end is provided with drill bit clamping hole, described drill bit clamping hole is the drill bit clamping hole of taper, the surface roughness of the inner surface of described drill bit clamping hole is 1.0 ~ 3.2, described drill bit clamping hole internal fixtion is connected with the drillstock of drill bit.
2. boring grab on the milling machine of easy switching according to claim 1, it is characterized in that, the overall external taper of described drill bit tapered sleeve, the tapering of milling machine spindle endoporus are identical, and its tapering is 1:19.002,3 ° 0 ' 52.4 ".
3. boring grab on the milling machine of easy switching according to claim 2, it is characterized in that, the tapering of described drill bit clamping hole differs a tapering grade with the external taper of drill bit tapered sleeve.
4. boring grab on the milling machine of easy switching according to claim 3, is characterized in that, when the diameter of described drill bit is in 25 mm ~ 40 mm, described drill bit tapered sleeve adopts one-stage drill bits could tapered sleeve.
5. boring grab on the milling machine of easy switching according to claim 3, it is characterized in that, when the diameter of described drill bit is in 5 mm ~ 25 mm, described drill bit tapered sleeve adopts multistage drill bit tapered sleeve.
6. boring grab on the milling machine of easy switching according to claim 5, it is characterized in that, described multistage drill bit tapered sleeve comprises multiple drill bit tapered sleeve be set in together, two adjacent drill bit tapered sleeves external taper differ a tapering grade.
CN201420676552.XU 2014-11-13 2014-11-13 Boring grab on the milling machine of easy switching Active CN204221425U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420676552.XU CN204221425U (en) 2014-11-13 2014-11-13 Boring grab on the milling machine of easy switching

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420676552.XU CN204221425U (en) 2014-11-13 2014-11-13 Boring grab on the milling machine of easy switching

Publications (1)

Publication Number Publication Date
CN204221425U true CN204221425U (en) 2015-03-25

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106695367A (en) * 2017-02-21 2017-05-24 李广连 Chuck quick-to-lock device for drilling machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106695367A (en) * 2017-02-21 2017-05-24 李广连 Chuck quick-to-lock device for drilling machine
CN106695367B (en) * 2017-02-21 2018-12-18 袁静 A kind of fast locking device of drilling machine collet

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