CN201755779U

CN201755779U - Blade grinding machine chuck

Info

Publication number: CN201755779U
Application number: CN2010201884365U
Authority: CN
Inventors: 何桂雄; 李�浩
Original assignee: Shennan Circuit Co Ltd
Current assignee: Shennan Circuit Co Ltd
Priority date: 2010-05-12
Filing date: 2010-05-12
Publication date: 2011-03-09
Anticipated expiration: 2020-05-12

Abstract

The utility model relates to a component of a blade grinding machine, specifically to a blade grinding machine chuck, comprising a chuck pole and a set screw, wherein a tail end of the chuck pole is provided with a knife bar fixing hole. The chuck also comprises a knife bar collar, which is sleeved onto the tail end of the chuck pole. A sidewall of the knife bar fixing hole at the tail end of the chuck pole is provided with a notch. A part of sidewalls of the knife bar collar are located at the notch position, forming a sidewall of the knife bar fixing hole. The knife bar collar contacts with a knife bar surface. The part of the knife bar collar corresponding to the tail end of the chuck pole is provided with a radial through screw hole. The set screw is disposed in the screw hole. Because the knife bar collar is added to the blade grinding machine chuck and a mating surface between the knife bar collar and a knife bar is a circular arc surface, the knife bar collar and the knife bar are contacted in a surface manner, which, compared with the point contact in the prior art, enables to better fix the knife bar and prevents the knife bar from loosening during the grinding process, thereby enhancing the blade grinding quality of a drill bit, needing no too large a locking force to lock the knife bar, and preventing the screw hole from too early slipping so as to prolong the service lifetime of the chuck.

Description

A kind of blade milling machine chuck

Technical field

The utility model relates to a kind of parts of blade milling machine, specifically is meant a kind of blade milling machine chuck.

Background technology

Blade milling machine is a kind of machine that grinds used drill bit, the chuck structure of existing blade milling machine as shown in Figure 1, comprise chuck bar 1 and fixed screw 2, the end of chuck bar 1 is provided with knife bar fixing hole 11, the sidewall of knife bar fixing hole 11 also is provided with screw hole 12, the knife bar 3 of drill bit is fixed in the knife bar fixing hole 11 of chuck bar 1 by fixed screw 2, there is big problem in this kind fixed form, because fixed screw 2 contacts for point with knife bar 3, drill bit need rotate 180 ° when grinding, and stressed bigger, in process of lapping, fixed screw 2 is loosening easily, in case this situation occurs, the Grinding Quality of drill bit does not often reach requirement, this can impel the operator all to exert oneself to lock at every turn, excessive coupling mechanism force can make the screw hole 12 too early stripped threads on the chuck bar 1, and causes fixed screw 2 can not lock drill bit, and the life-span of chuck shortens greatly.

The utility model content

The technical problem that the utility model mainly solves provides a kind of blade milling machine chuck reliable, long service life of fixing.

For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of blade milling machine chuck is provided, comprise chuck bar and fixed screw, chuck bar tail end is provided with the knife bar fixing hole, wherein: described chuck also comprises the knife bar collar, the knife bar collar is set in chuck bar tail end, the sidewall of chuck bar tail end knife bar fixing hole is provided with breach, knife bar collar part sidewall is positioned at described gap position, form the sidewall of knife bar fixing hole, the knife bar collar contacts with the knife bar face, and the part of knife bar collar corresponding clip head rod tail end is provided with the screw hole that radially runs through, fixed screw is arranged in the screw hole, and length is greater than described screw hole length.

The beneficial effects of the utility model are: because blade milling machine chuck described in the utility model has been set up the knife bar collar, the knife bar collar and knife bar mating surface are arc surface, the knife bar collar is that face contacts with knife bar, so can be better than the contact of the point of prior art fixing knife bar, prevent that it is loosening in process of lapping, thereby improve the grinding quality of drill bit, needn't lock knife bar with excessive coupling mechanism force again, avoid the too early stripped thread of screw hole, thereby improve the service life of chuck.

Description of drawings

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

Fig. 1 is the blade milling machine chuck structure schematic diagram of prior art;

Fig. 2 is the structural representation of the utility model blade milling machine chuck embodiment;

Fig. 3 is an A-A cutaway view among Fig. 2.

Wherein, 1, chuck bar; 11, knife bar fixing hole; 12, screw hole; 2, fixed screw; 3, knife bar; 4, the knife bar collar; 41, screw hole.

The specific embodiment

By describing technology contents of the present utility model, structural feature in detail, realized purpose and effect, give explanation below in conjunction with embodiment and conjunction with figs. are detailed.

Embodiment as blade milling machine chuck described in the utility model, see also Fig. 2 and Fig. 3, the blade milling machine chuck comprises chuck bar 1 and fixed screw 2, chuck bar 1 tail end is provided with knife bar fixing hole 11, described chuck also comprises the knife bar collar 4, the knife bar collar 4 is set in chuck bar 1 tail end, the sidewall of chuck bar tail end knife bar fixing hole 11 is provided with breach, the knife bar collar 4 a part of sidewalls are positioned at described gap position, form the sidewall of knife bar fixing hole 11, the knife bar collar 4 contacts with 3 of knife bars, and the part of the knife bar collar 4 corresponding clip head rod tail ends is provided with the screw hole 41 that radially runs through, fixed screw 2 is arranged in the screw hole 41, and length is greater than the length of described screw hole 41.

The using method of the utility model blade milling machine chuck is: earlier the knife bar collar is enclosed within chuck bar tail end, again knife bar is put into the knife bar fixing hole, fixed screw is installed in the screw hole place and tightens, knife bar just is fixed between the knife bar collar and the chuck bar.Because the utility model blade milling machine chuck has been set up the knife bar collar, the knife bar collar and knife bar mating surface are arc surface, the knife bar collar is that face contacts with knife bar, so can be better than the contact of the point of prior art fixing knife bar, prevent that it is loosening in process of lapping, thereby improve the grinding quality of drill bit, needn't lock knife bar with excessive coupling mechanism force again, avoid the too early stripped thread of screw hole, thereby improve the service life of chuck.

In embodiment of the present utility model, the described knife bar collar and knife bar inner surface for matching are the arc surface that radius equals the knife bar radius, and the perhaps described knife bar collar and knife bar inner surface for matching are the arc surface of radius greater than the knife bar radius.

In order to guarantee enough big contact area is arranged with knife bar 3, reach best fixed effect, the height H of the knife bar collar 4 is generally 1-10 times of knife bar 3 diameters, and the arc surface length L that the knife bar collar 4 matches with knife bar 3 generally should be more than or equal to 1mm.

The above only is embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure that utilizes the utility model specification and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.

Claims

1. blade milling machine chuck, comprise chuck bar and fixed screw, chuck bar tail end is provided with the knife bar fixing hole, it is characterized in that: described chuck also comprises the knife bar collar, the knife bar collar is set in chuck bar tail end, the sidewall of chuck bar tail end knife bar fixing hole is provided with breach, knife bar collar part sidewall is positioned at described gap position, form the sidewall of knife bar fixing hole, the knife bar collar contacts with the knife bar face, the part of knife bar collar corresponding clip head rod tail end is provided with the screw hole that radially runs through, and fixed screw is arranged in the screw hole, and length is greater than described screw hole length.

2. blade milling machine chuck according to claim 1 is characterized in that: the knife bar collar and knife bar inner surface for matching are the arc surface that radius equals the knife bar radius.

3. blade milling machine chuck according to claim 1 is characterized in that: the knife bar collar and knife bar inner surface for matching are the arc surface of radius greater than the knife bar radius.

4. according to each described blade milling machine chuck of claim 1 to 3, it is characterized in that: the height H of the described knife bar collar is 1-10 a times of knife bar diameter.

5. according to each described blade milling machine chuck of claim 1 to 3, it is characterized in that: the arc surface length L that the described knife bar collar matches with knife bar is more than or equal to 1mm.