Elastic chuck
Technical Field
The utility model relates to the field of machine-building, especially, relate to an elastic chuck.
Background
The chuck is a cylindrical fixture for fastening drill bit or milling cutter. The fixing device is also used for fixing and reinforcing the part needing to be modified. But is not applicable in all cases, for example, for tapered plugs, which in practice would not be achieved using conventional or modified collets. It is therefore desirable to have a new chuck construction that can be used with tapered plugs.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of relevant product among the prior art, the utility model provides an elastic chuck solves current chuck and can not carry out the problem of clamping to the toper end cap.
The utility model provides an elastic chuck, which is used for clamping an end cap structure and comprises a pull buckle structure detachably connected to a main shaft of a machine tool, wherein the other end of the pull buckle structure is connected with an inclined clinohedral, the outer side of the clinohedral is connected with a clamping structure in an extending way, the clamping structure is a claw tooth structure which is uniformly distributed in a circumferential way, the clamping structure comprises a plurality of outward-expanding inclined planes, and an avoiding gap is formed between every two adjacent outward-expanding inclined planes; the clamping structure comprises an inclined body, a plurality of outward-expanding inclined planes and a plurality of locking screws, wherein the inclined body starts to be provided with the locking screw hole on one side facing the clamping structure, the end part of the outward-expanding inclined plane is connected with a plug expanding surface, the plug structure is wrapped and clamped in the outward-expanding inclined planes, the plug is limited by the outward-expanding inclined planes, and the plug structure is in contact with the locking screw hole and is fixed through the locking screws.
The utility model discloses an in some embodiments, the step groove has been seted up on the tip that draws knot structure and lathe main shaft to be connected, draw knot structure to pass through step groove and lathe main shaft block.
In certain embodiments of the present invention, the ramp is a cone structure, wherein the angle of inclination between the two sides of the ramp profile is 60 °.
In some embodiments of the present invention, the outer expansion inclined plane and the plug expansion surface are metal elastic pieces.
In some embodiments of the present invention, an angle between the outward-expanding inclined plane and the axial direction of the locking screw hole is 8 °.
In some embodiments of the present invention, an angle between the plug expansion surface and the axial direction of the locking screw hole is 8.5 °.
Compared with the prior art, the utility model discloses there is following advantage:
the embodiment of the utility model provides a when collet inserted the clamping structure at the end cap structure, can loop through the end cap face that rises and the inclined plane that rises outward automatic centre gripping of realizing to the end cap structure that rises, keep with axiality between collet and the lathe main shaft, the inclined plane that rises outward with the end cap face that rises realizes stable centre gripping to the end cap structure through the elasticity power that rises, the condition that the pine takes off can not appear to utilize locking screw further fixed, and the inclined plane that rises outward of equipartition can make the end cap structure at the even atress of circumference, has avoided the problem that deformation appears in the end cap structure, collet simple structure, the clamping is reliable, especially has better centre gripping effect to the toper end cap, and installs and dismantles the convenience.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the collet of the present invention;
fig. 2 is a front view of the collet of the present invention;
fig. 3 is a side view of the collet of the present invention.
Description of reference numerals:
the structure comprises a pull buckle structure 1, an inclined plane body 2, a clamping structure 3, a plug expanding surface 4, a step groove 10, an outer expanding inclined plane 31, an avoiding gap 32 and a locking screw hole 40.
Detailed Description
In order to make the technical field person understand the scheme of the present invention better, the following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical scheme in the embodiments of the present invention. It is to be understood that the embodiments described are merely exemplary of the invention, and that no limitations are intended to the details of construction or design herein shown. The present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for the purpose of providing a more thorough understanding of the present disclosure.
Referring to fig. 1-3, the elastic chuck is used for clamping a plug structure, and includes a pull buckle structure 1 detachably connected to a main shaft of a machine tool, the other end of the pull buckle structure 1 is connected to an inclined ramp body 2, the outer side of the ramp body 2 is connected to a clamping structure 3 in an extending manner, the clamping structure 3 is a uniformly-extending and circumferentially-distributed claw-tooth structure and includes a plurality of outward-expanding inclined surfaces 31, and an avoiding gap 32 is formed between each two adjacent outward-expanding inclined surfaces 31; the inclined plane body 2 starts to be provided with a locking screw hole 40 on one side facing the clamping structure 3, the end part of the outward expansion inclined plane 31 is connected with a plug expansion surface 4, the plug structure is wrapped and clamped by the outward expansion inclined planes 31, the outward expansion inclined plane 31 limits the plug, and the plug structure is in contact with the locking screw hole 40 and is fixed through a locking screw.
The end part of the pull buckle structure 1 connected with the machine tool spindle is provided with a step groove 10, the pull buckle structure 1 can be conveniently clamped with the machine tool spindle through the step groove 10 and can be rapidly disassembled when needed, and the operation and the installation are convenient.
The inclined plane body 2 is in a cone structure, wherein the inclination angle between two side edges of the side section of the inclined plane body 2 is 60 degrees.
The outward expansion inclined plane 31 and the plug expansion surface 4 are both metal elastic sheets, have certain elasticity, and can provide expansion force when the plug structure is inserted so as to clamp the plug structure.
The included angle between the outward expansion inclined surface 31 and the locking screw hole 40 in the axial direction is 8 degrees, and the included angle between the plug expansion surface 4 and the locking screw hole 40 in the axial direction is 8.5 degrees.
The embodiment of the utility model provides a when collet inserted clamping structure 3 at the end cap structure, can loop through the end cap and rise face 4 and the outer inclined plane 31 that rises automatically and slide in locking screw 40 departments, keep with axiality between collet and the lathe main shaft, outer inclined plane 31 that rises with the end cap rises face 4 and rises through elasticity power to realize stable centre gripping to the end cap structure, the condition that the pine can not appear and take off to utilize locking screw further fixed, and the outer inclined plane 31 that rises who just divides equally can make the end cap structure at the even atress of circumference, avoided the problem that deformation appears in the end cap structure, collet simple structure, the clamping is reliable, especially has better centre gripping effect to the toper end cap, and installs and dismantles the convenience.
Those not described in detail in this specification are within the skill of the art. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing detailed description, or equivalent replacements may be made for some of the technical features of the embodiments. All utilize the equivalent structure that the content of the utility model discloses a specification and attached drawing was done, direct or indirect application is in other relevant technical field, all is in the same way the utility model discloses within the patent protection scope.