Drill chuck for numerical control machine tool

Abstract

The utility model discloses a numerical control machine tool drill chuck which comprises a drill bit fixing sleeve, a conical frame is movably connected in the drill bit fixing sleeve, three steel rollers abut against the interior of the conical frame, a drill bit main body is clamped among the steel rollers, an anti-skid groove is formed in one end of the drill bit main body, and the other end of the drill bit main body is fixedly connected with the conical frame. Supporting springs are fixedly connected to the two sides between one end of the conical frame and the drill bit fixing sleeve, the middle of one end of the conical frame is in threaded connection with an abutting screw rod, and one end of the abutting screw rod is fixedly connected with a rotary knob. The rotary knob, the threaded rod, the conical frame and the drill bit body are arranged, the rotary knob rotates to abut against the threaded rod to move towards the rear thread, then the drill bit body can abut against the inner side, at the moment, the conical frame moves towards the rear side through abutting of the pinch bar, and at the moment, the position of a steel roller can be moved; and the drill bit main body can be taken out.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool drill chucks, in particular to a drill chuck for numerically controlled machine tools. Background Art

[0002] CNC machine tool is the abbreviation of digital control machine tool. It is an automated machine tool equipped with a program control system. The control system can logically process programs specified by control codes or other symbolic instructions, decode them, and express them in coded numbers. The information is input into the CNC device through the information carrier. After calculation and processing, the CNC device sends out various control signals to control the movement of the machine tool and automatically process the parts according to the shape and size required by the drawing. In the processing process of the CNC machine tool, a CNC drill chuck is needed to fix the drill bit.

[0003] The drill bit in the prior art needs to be loosened with a tool when in use. When the tool structure is tightened, it will cause excessive clamping force, making subsequent disassembly more complicated. If the clamping is loose, it will fall off, causing inconvenience in use. If there is no tool, it will affect the disassembly and installation operations of the drill bit, and its use is limited. Utility Model Content

[0004] The utility model aims to provide a drill chuck for a numerically controlled machine tool, which is inserted and fixed in position after one end of a drill body abuts against an abutting screw rod, and is limited by a position of an abutting groove and a steel roller, so that the position of the drill body can be fixed through the abutting groove, and it is not easy to move or rotate. At this time, when the drill body extends outward, the greater the force is, the stronger the tightening force is.

[0005] To achieve the above-mentioned purpose, a drill chuck for a CNC machine tool is provided, comprising: a drill fixing sleeve, a conical frame movably connected to the inside of the drill fixing sleeve, three steel rollers abutting against the inside of the conical frame, a drill body being clamped between the steel rollers, an anti-slip groove being provided at one end of the drill body, support springs being fixedly connected on both sides between one end of the conical frame and the drill fixing sleeve, a resistance screw being threadedly connected to the middle part of one end of the conical frame, and a knob being fixedly connected to one end of the resistance screw.

[0006] According to the drill chuck for a CNC machine tool, both ends of the drill fixing sleeve are rotatably connected to a rotating shaft, and a pry bar is fixedly connected to the outer side of the rotating shaft.

[0007] According to the drill chuck for a CNC machine tool, one end of the pry bar is inclined to abut against the conical frame.

[0008] According to the drill chuck for a CNC machine tool, one end of the drill fixing sleeve is fixedly connected to a mounting flange, and a driving shaft is fixedly connected to a middle portion of one end of the mounting flange.

[0009] According to the drill chuck for a numerically controlled machine tool, three openings are provided on the surface of the conical frame, and a through hole penetrates the interior of the conical frame.

[0010] According to the drill chuck for a CNC machine tool, an opening is formed on the upper surface of the drill fixing sleeve, and the knob passes through the top of the opening.

[0011] According to the drill chuck for CNC machine tools, a plurality of abutment grooves are provided at one end of the drill body, and the abutment grooves and the steel rollers are in abutment with each other.

[0012] The above scheme has the following beneficial effects:

[0013] 1. The utility model is provided with a drill body, a conical frame, a steel roller and a resistance groove. One end of the drill body is inserted into the interior of the drill fixing sleeve and the interior of the conical frame, and is expanded by resistance to the steel roller. When one end of the drill body is in resistance to the resistance screw, the insertion position is fixed, and the position is limited by the resistance groove and the steel roller. The position of the drill body can be fixed by the resistance groove, and it is not easy to move or rotate. At this time, when the drill body extends outward, the greater the force is, the stronger the fastening force is.

[0014] 2. The utility model is provided with a knob, a threaded rod, a conical frame and a drill body. The knob is rotated to push the screw rod to move backwards, and then the drill body can push inwards. At this time, the conical frame is moved backwards through the push of the pry bar, and the position of the steel roller can be moved. When the space behind the steel roller becomes larger, the drill body can be taken out.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0017] Figure 1 It is a cross-sectional top view of a drill chuck for a CNC machine tool of the utility model;

[0018] Figure 2 This is a three-dimensional diagram of a drill bit fixing sleeve of a drill chuck for a CNC machine tool according to the utility model;

[0019] Figure 3 For this utility model Figure 1 A in the enlarged view;

[0020] Figure 4 This is a three-dimensional diagram of a tapered frame of a drill chuck for a CNC machine tool according to the utility model;

[0021] Figure 5 The utility model is a top view of an interference groove of a drill chuck for a CNC machine tool.

[0022] Legend:

[0023] 1. Drill bit fixing sleeve; 2. Support spring; 3. Mounting flange; 4. Drive shaft; 5. Resistance screw; 6. Knob; 7. Pry bar; 8. Rotating shaft; 9. Steel roller; 10. Conical frame; 11. Through hole; 12. Drill bit body; 13. Resistance groove. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model; the terms "first", "second" and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0026] Reference Figure 1-5The utility model embodiment of a drill chuck for a CNC machine tool comprises: a drill fixing sleeve 1, the drill fixing sleeve 1 is movably connected with a conical frame 10 inside, and the conical frame 10 structure can limit the three steel rollers 9 and facilitate the insertion of the drill body 12. The conical frame 10 has three steel rollers 9 in contact with the inside of the tapered frame 10. When one end of the drill body 12 contacts the contact screw 5, the insertion position is fixed, and the position of the drill body 12 is limited by the contact groove 13 and the steel roller 9. The contact groove 13 can fix the position of the drill body 12. The steel rollers 9 clamp the drill body 12. By inserting one end of the drill body 12 into the inside of the drill fixing sleeve 1, it is connected with the driving device through the driving shaft 4. After the connection, the drill body 12 can perform a drilling operation with an object, and the inside of the tapered frame 10 is expanded by contacting the steel roller 9. This structure facilitates installation. One end of the drill body 12 is provided with an anti-slip groove, which can increase the anti-slip effect. Support springs 2 are fixedly connected on both sides between one end of the tapered frame 10 and the drill fixing sleeve 1. The support springs 2 are elastically supported to provide a reset effect, which is not easy. A resistance screw 5 is threadedly connected to the middle part of one end of the tapered frame 10, and resistance can be achieved through the resistance screw 5 to achieve a fixed resistance position. A knob 6 is fixedly connected to one end of the resistance screw 5, and a mounting flange 3 is fixedly connected to one end of the drill fixing sleeve 1, and a driving shaft 4 is fixedly connected to the middle part of one end of the mounting flange 3. A plurality of resistance grooves 13 are provided at one end of the drill body 12, and the position of the drill body 12 can be fixed through the resistance grooves 13, which is not easy to move or rotate, and the resistance grooves 13 and the steel roller 9 are in resistance with each other.

[0027] Both ends of the drill bit fixing sleeve 1 are rotatably connected with a rotating shaft 8, and the rotating shaft 8 and the pry bar 7 are used to complete the rotational conflict to move the position of the tapered frame 10. The pry bar 7 is fixedly connected to the outer side of the rotating shaft 8. When the drill bit body 12 needs to be replaced, the knob 6 is rotated to move the conflicting screw 5 backward, and then the drill bit body 12 can be conflicted inward. At this time, through the conflict of the pry bar 7, the tapered frame 10 is moved backward, and the position of the steel roller 9 can be moved. When the space behind the steel roller 9 becomes larger, the drill bit body 12 can be taken out. One end of the pry bar 7 is inclined to conflict with the tapered frame 10. Three openings are opened on the surface of the tapered frame 10, and a through hole 11 is penetrated inside the tapered frame 10. An opening is opened on the upper surface of the drill bit fixing sleeve 1, and the knob 6 passes through the top of the opening.

[0028] Working principle: When in use, first insert one end of the drill body 12 into the inside of the drill fixing sleeve 1 and the inside of the conical frame 10, and expand through the resistance against the steel roller 9. When one end of the drill body 12 resists the resistance screw 5, the insertion position is fixed, and the position of the resistance groove 13 and the steel roller 9 is limited. The position of the drill body 12 can be fixed through the resistance groove 13, and it is not easy to move and rotate. Then, it is connected to the driving device through the driving shaft 4. After the connection, the drill body 12 can perform drilling operations with the object. When the drill body 12 needs to be replaced, the knob 6 is rotated to move the resistance screw 5 backward threadedly, and then the drill body 12 can resist inward. At this time, through the resistance of the pry bar 7, the conical frame 10 is moved backward, and the position of the steel roller 9 can be moved. When the space behind the steel roller 9 becomes larger, the drill body 12 can be taken out.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A drill chuck for a CNC machine tool, comprising: A drill bit fixing sleeve (1) is characterized in that a conical frame (10) is movably connected inside the drill bit fixing sleeve (1), three steel rollers (9) are abutted inside the conical frame (10), a drill bit body (12) is clamped between the steel rollers (9), an anti-slip groove is provided at one end of the drill bit body (12), support springs (2) are fixedly connected on both sides between one end of the conical frame (10) and the drill bit fixing sleeve (1), a contact screw (5) is threadedly connected to the middle part of one end of the conical frame (10), and a knob (6) is fixedly connected to one end of the contact screw (5).

2. A drill chuck for a CNC machine tool according to claim 1, characterized in that: Both ends of the drill bit fixing sleeve (1) are rotatably connected to a rotating shaft (8), and the outer side of the rotating shaft (8) is fixedly connected to a pry rod (7).

3. A drill chuck for a CNC machine tool according to claim 2, characterized in that: One end of the pry bar (7) is inclined to abut against the conical frame (10).

4. A drill chuck for a CNC machine tool according to claim 1, characterized in that: One end of the drill bit fixing sleeve (1) is fixedly connected to a mounting flange (3), and a driving shaft (4) is fixedly connected to a middle portion of one end of the mounting flange (3).

5. The drill chuck for a CNC machine tool according to claim 1, characterized in that: The surface of the conical frame (10) is provided with three openings, and the interior of the conical frame (10) is penetrated by a through hole (11).

6. A drill chuck for a CNC machine tool according to claim 1, characterized in that: An opening is provided on the upper surface of the drill bit fixing sleeve (1), and a knob (6) passes through the top of the opening.

7. A drill chuck for a CNC machine tool according to claim 1, characterized in that: A plurality of abutment grooves (13) are provided at one end of the drill bit body (12), and the abutment grooves (13) and the steel roller (9) are in abutment with each other.

Images