CN2654274Y

CN2654274Y - Cutter gripping device of drilling machine

Info

Publication number: CN2654274Y
Application number: CN 200320116469
Authority: CN
Inventors: 陈金堆
Original assignee: Zhangzhou Shengyuan Machinery Industrial Co ltd
Current assignee: Zhangzhou Shengyuan Machinery Industrial Co ltd
Priority date: 2003-11-08
Filing date: 2003-11-08
Publication date: 2004-11-10
Anticipated expiration: 2013-11-08

Abstract

The utility model provides a tool clamp for clamping cutting tools. A wedged coating is covered on the internal side wall of a screw cap or the peripheral surface of a collet forming the tool clamp; or, the wedged coating is covered on both of the two to improve the locking binding force.

Description

The cutter chuck of drilling facility

Technical field

It is relevant that the utility model relates to the clamp assemblies of machine tool, relates in particular to a kind of cutter chuck with drilling facility of preferable coupling mechanism force.

Background technology

As shown in Figure 1, the general employed cutter chuck structure of drilling machine (as milling machine) includes a knife bar 1 substantially, one elastic collet chuck 2 and a nut 3, above-mentioned knife bar 1 is to be incorporated on the machine tool chief axis, it has a taper axis hole 1a and an external thread section 1b, these elastic collet chuck 2 outsides have a taper socket section 2a and a male cone (strobilus masculinus) 2b, this socket section 2a system fills among this axis hole 1a, one folder hole 2c runs through this collet chuck 2 can be used for clamping one cutter (figure does not show), and sidewall has the tiltedly about 60 inner conical surface 3b that spend angles of one of adjacency internal thread segment 3a and within this nut 3, this nut 3 screws togather with thread segment 1b outside its internal thread segment 3a and this knife bar 1, its inner conical surface 3b then connects with this collet chuck 2 male cone (strobilus masculinus) 2b, along with nut 3 tightly locks on this knife bar 1, be retracted among the axis hole 1a making the male cone (strobilus masculinus) 2b of its inner conical surface 3b pushing tow collet chuck 2 cause collet chuck 2, more because of being cone match between collet chuck 2 and the knife bar 1, force this elastic collet chuck 2 bring distortion together and clamp-on tool more so reach.

But, aforementioned general cutter chuck in use, normal advance to be obstructed and do not rotate but whole cutter chuck still is the facility main shaft drives relatively that cutter dallies because of the factor that can not expect causes cutter, aforementioned circumstances is as occurring in due to smear metal is piled up between cutter and the processed object in the process, or processed object quality is strong or the cutter rotating speed causes difficult cutting etc. excessively slowly, so cutter is in changeing to advance to be hampered and will be stuck state, cutter is stuck and causes the factor of not rotating except above-mentioned points, but other has an imputation and nut to lock hypodynamic factor, though nut 3 is closed on collet chuck 2 for screwing, but be limited by collet chuck 2 and knife bar 1, cooperate for conical surface butt between nut 3 and the collet chuck 2, and above-mentioned each assembly is surperficial hard smooth will cause after strengthening its hardness through heat treatment, so when cutter is hampered, when resistance during greater than the coupling mechanism force between nut 3 and the collet chuck 2, then stuck situation takes place in cutter easily.

Hereat, industry is when constantly pursuing firmer cutter chuck, and the coupling mechanism force that how to promote between nut and the collet chuck will be another subject under discussion that is worth research with the resistance of resisting cutter and being obstructed.

Summary of the invention

Main purpose of the present utility model is to provide a kind of cutter chuck of drilling facility, and the coupling mechanism force between its nut and the collet chuck more wins general structure.

Secondary objective of the present utility model is to provide a kind of cutter chuck of drilling facility, it contacts one side in nut or collet chuck or nut and is covered with a wedging coating to strengthen the frictional resistance between this two with collet chuck, promote the locking adhesion between its grade according to this.

Another purpose of the present utility model is to provide a kind of cutter chuck of drilling facility, and its wedging coating is that Te Fulong (TEFLON) material is through spraying attached the acquisition.

Edge is to reach above-mentioned purpose, and the cutter chuck of a kind of drilling and cutting machine tool that the utility model provided includes: a knife bar, have a central shaft hole, and its front end outside is provided with an external thread section; One collet chuck uses in order to clamping one cutter, and its outside has a socket Duan Yuyi male cone (strobilus masculinus), and this collet chuck is located at its socket Duan Ersai and is changed in the central shaft hole; One nut, its madial wall has an internal thread segment, and this nut screws togather with thread segment outside its internal thread segment and this knife bar, tightly locks at nut and will force this this cutter of collet chuck clamping on this knife bar; It is characterized in that: within this nut on the sidewall, or conical surface outside outside this collet chuck, or outside this collet chuck within outside and this nut of the conical surface sidewall covering a wedging coating arranged.

Description of drawings

Fig. 1 partly cuts open schematic diagram for the prior art cutter chuck;

Fig. 2 is the part sectioned view of one of the utility model preferred embodiment 1 nut;

Fig. 3 is the generalized section of the utility model nut and collet chuck.

Fig. 4 is opposite test's exploded perspective schematic diagram;

Fig. 5 makes up schematic perspective view for the opposite test.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further specified.

The cutter chuck structure of the utility model drilling facility includes a knife bar, a collet chuck and a nut, respectively detail structure of this member and the relevant position that is assembled thereof are all same as the prior art, so only describe structure after the improvement that the utility model cutter chuck can promote locking adhesion effect down:

The utility model embodiment 1 as shown in Figure 2, wherein these nut 10 madial walls have the tiltedly inner conical surfaces 12 of about 60 degree of one of adjacency internal thread segment 11 and, this internal thread segment 11 and inner conical surface 12 effects see that prior art partly describes, and the improvement of the utility model cutter chuck focus on this nut 10 through be processed into and through heat treatment with after strengthening surface hardness, with Te Fulong (TEFLON) material and to spray attached mode it spray is invested on this internal thread segment 11 and this inner conical surface 12 again, it forms a wedging coating 13 more according to this after the high temperature heating.And for example shown in Figure 3, cutter chuck is except the nut 10 that sprays attached Te Fulong (TEFLON), more can be to spraying attached Te Fulong (TEFLON) material again and form another wedging coating 21 through collet chuck 20 outer peripheral faces of Overheating Treatment with strengthening surface hardness, this wedging coating 21 is coated on the socket section 22 and male cone (strobilus masculinus) 23 of collet chuck 20 simultaneously.

Certainly, operation for convenience also can directly be sprayed attached operation to surfaces externally and internally, the collet chuck of nut, and above-mentioned wedging coating (13) (21) thickness is between being good between the 0.02mm to 0.2mm.

And when using cutter chuck, can be directly the general collet chuck of wedging coating not be arranged for nut 10 collocation of selecting to have wedging coating 13, or the material characteristic of nut 10 collocation of selecting to have wedging coating 13 with wedging coating (13) (21) will make the frictional resistance increase of nut and collet chuck contact site, and then can reach the effect that promotes the locking adhesion, be that it can promote the resistance when cutter may meet with obstruction in the antagonism use greatly, it is more smooth and easy that the structure of improvement like this will make that cutter chuck adds the rotation in man-hour together with cutter.

As Fig. 4, Fig. 5, system illustrates according to this that to the various matched combined test verifications of collet chuck and nut the utility model more wins collet chuck, the nut that Te Fulong wedging coating is not generally arranged really for collet chuck, the coupling mechanism force of nut after spraying attached Te Fulong (TEFLON) of cutter chuck.

When the coupling mechanism force between test collet chuck and nut is big or small, elder generation replaces cutters with prod 50 and is collet chuck institute clamping, then collet chuck 20 and nut 10 are combined on the knife bar (figure does not show), afterwards, the coupling mechanism force of this nut 10 is controlled at a fixed value (being set at 100N/M in this), this fixed value can be recorded by a torsional test spanner (figure does not show), and when check, with the torsional test spanner this prod 50 is carried out switching again, when switching torsion begins to order about prod 50 rotations, promptly represent cutter when meeting with this, will be stuck and do not rotate, and this numerical value can obtain via the indication of the demonstration index on the torsional test spanner the resistance of equivalence.

The assay of each test group:

Test group 1: the general collet chuck and the nut of Te Fulong wedging coating are not arranged, its etc. combination back torsion measured value that prod is carried out be 70N/M.

Test group 2: the full plating in outside Te Fulong in the nut, its collocation does not have the general collet chuck of Te Fulong, its etc. combination back torsional test that prod is carried out be 150N/M, be sopranos in the middle of all test groups, promptly represent and can resist the resistance maximum.

Test group 3: outside and collet chuck periphery all have Te Fulong coating in the nut, its etc. the torsion measured value that then prod carried out of combination be 130N/M.

Test group 4: the collet chuck outer peripheral face has Te Fulong coating, and its collocation does not have the general nut of Te Fulong, its etc. the torsion measured value that then prod carried out of combination be 100N/M.

Test group 5: nut only has Te Fulong coating in inner conical surface place of its 60 degree, and its collocation collet chuck outer peripheral face has Te Fulong coating, its etc. the torsion measured value that then prod carried out of combination be 100N/M.

Test group 6: nut only has Te Fulong coating in that conical surface place of its 60 degree, and its collocation does not have the general collet chuck of Te Fulong, its etc. the torsion measured value that then prod carried out of combination be 100N/M.

By test, no matter be that collet chuck or nut distinctly are covered with Te Fulong coating person, or the two is when all being covered with Te Fulong coating, all uses with general nut collocation than traditional general collet chuck to have better locking adhesion.

Claims

1, a kind of cutter chuck of drilling facility includes:

One knife bar has a central shaft hole, and its front end outside is provided with an external thread section;

One collet chuck uses in order to clamping one cutter, and its outside has a socket Duan Ersai and is located in this central shaft hole;

One nut, its madial wall has an internal thread segment, and this nut screws togather with thread segment outside its internal thread segment and this knife bar, tightly locks at nut and will force this this cutter of collet chuck clamping on this knife bar;

It is characterized in that:

More covering on the sidewall within this nut has a wedging coating.

2, the cutter chuck of drilling facility as claimed in claim 1 is characterized in that: wherein within this nut on the sidewall spray form this wedging coating according to this with a Te Fulong (TEFLON) material.

3, the cutter chuck of drilling facility as claimed in claim 2 is characterized in that: wherein this wedging thickness of coating is between between the 0.02mm to 0.2mm.

4, the cutter chuck of drilling facility as claimed in claim 3, it is characterized in that: wherein this collet chuck outside has a male cone (strobilus masculinus), sidewall has an inner conical surface and can connect with this male cone (strobilus masculinus) within this nut, and this Te Fulong wedging coating system spray invests on this inner conical surface and this internal thread segment.

5, the cutter chuck of drilling facility as claimed in claim 3, it is characterized in that: wherein this collet chuck outside has a male cone (strobilus masculinus), sidewall has an inner conical surface and can connect with this male cone (strobilus masculinus) within this nut, and this Te Fulong wedging coating system spray invests on this inner conical surface.

6, a kind of cutter chuck of drilling facility includes:

One collet chuck uses in order to clamping one cutter, and its outside has a socket Duan Yuyi male cone (strobilus masculinus), and this collet chuck is located in this central shaft hole with its socket Duan Ersai;

One nut, its madial wall has one of adjacency an internal thread segment and an inner conical surface, thread segment cooperates with thread segment outside this knife bar within this nut, and conical surface butt outside its inner conical surface and this collet chuck will force this this cutter of collet chuck clamping along with nut tightly locks on this knife bar;

It is characterized in that:

Conical surface outside is being covered outside this collet chuck a wedging coating, and sidewall is also covering within this nut a wedging coating.

7, a kind of cutter chuck of drilling facility includes:

It is characterized in that:

Conical surface outside is being covered outside this collet chuck a wedging coating.

8, as the cutter chuck of claim 6 or 7 described drilling facility, it is characterized in that: above-mentioned wedging coating is that a Te Fulong (TEFLON) material sprays attached and the former.

9, the cutter chuck of drilling facility as claimed in claim 8 is characterized in that: wherein above-mentioned wedging thickness of coating between between the 0.02mm to 0.2mm for good.