CN212121699U

CN212121699U - Anti-loosening tool clamping assembly

Info

Publication number: CN212121699U
Application number: CN202020326403.6U
Authority: CN
Inventors: 陆卓君
Original assignee: Dongguan Aken Precision Machinery Co ltd
Current assignee: Dongguan Aken Precision Machinery Co ltd
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2020-12-11
Anticipated expiration: 2030-03-16

Abstract

The utility model belongs to the technical field of milling cutter technique and specifically relates to indicate an anti-loosening cutter centre gripping subassembly. The outer side wall of handle of a knife one end is provided with first screw thread, and the inside wall of spiral shell lid is provided with the second screw thread that corresponds first screw thread and is located the tight convex part of support above the second screw thread, should support tight convex part butt handle of a knife lateral wall and become interference fit, the lateral wall of elasticity chuck upper end is provided with the circular conical surface, and the upper end of this circular conical surface laminating butt spiral shell lid inside wall. Adopt ingenious setting to support tight convex part and handle of a knife lateral wall and carry out interference fit, when vibrations appear in the cutter, most vibrations can be because of the interference fit of this department is direct through handle of a knife conduction output, the high-efficient low-cost solution the spiral shell lid appear not hard up problem because of vibrations.

Description

Anti-loosening tool clamping assembly

Technical Field

The utility model belongs to the technical field of milling cutter technique and specifically relates to indicate an anti-loosening cutter centre gripping subassembly.

Background

Cutter centre gripping subassembly that digit control machine tool processing was used generally all is conventional handle of a knife system on the market, and this type handle of a knife generally is formed by handle of a knife body, collet and spiral shell lid intercombination, and the cutter inserts collet earlier during the in-service use and then packs into the handle of a knife and then the suit spiral shell lid of screwing into, and the end of handle of a knife and the alignment of the mounting hole on the digit control machine tool main shaft after the combination is accomplished are inserted and can be used. This kind of handle of a knife cooperation cutter carries out the numerical control course of working, especially carry out comparatively heavily loaded man-hour, the cutter can produce high-frequency vibrations, these vibrations major part can be conducted to the spiral shell lid through collet, the spiral shell lid receives most vibrations and can make its screw thread department of being connected with the handle of a knife appear moving, the condition that finally leads to the spiral shell lid to become flexible appears taking place, appear becoming flexible when the spiral shell lid and then can lead to compressing tightly collet's power to disappear, the cutter also can appear becoming flexible thereupon, it also is difficult to discover if appearing not careful observation of condition operation personnel also to appear in daily processing, so basically all be when the condition that appears cutting off the sword or hit the machine, the operation personnel just can discover unusually, but late when the time, if hit the quick-witted condition seriously will influence the subsequent machining precision of lathe, the loss is.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to provide an anti-looseness cutter centre gripping subassembly adopts ingenious setting to support tight convex part and handle of a knife lateral wall and carries out interference fit, when the cutter vibrations appear, most vibrations can be because of the interference fit of this department is direct through handle of a knife conduction output, high-efficient low-cost solution the spiral shell lid appear not hard up problem because of vibrations.

In order to solve the technical problem, the utility model discloses a following technical scheme: the utility model provides an anti-loosening cutter clamping assembly, includes the handle of a knife, installs in the collet chuck and the spiral shell lid of handle of a knife one end, and wherein collet chuck inserts in the handle of a knife, and the spiral shell lid suit is in the handle of a knife and compresses tightly the collet setting, the lateral wall of handle of a knife one end is provided with first screw thread, and the inside wall of spiral shell lid is provided with the second screw thread that corresponds first screw thread and is located the tight convex part of support of second screw thread top, should support tight convex part butt handle of a knife lateral wall and become interference fit, the lateral wall of the overhead end portion of collet is provided with the conical surface, the upper end of.

Preferably, the abutting convex part abuts against the outer side wall at the tail end of the cutter handle.

Preferably, a circle formed by the outer side wall at the tail end of the tool shank and a circle formed by the front side surface of the abutting convex part are concentric circles, the numerical value of the outer side wall at the tail end of the tool shank from the center of the circle is N, and the numerical value of the front side surface of the abutting convex part from the center of the circle is N-0.05-0.25 mm.

Preferably, the front side surface of the abutting convex part abuts against the outer side wall at the tail end of the cutter handle, and the area of the front side surface is 50-80% of the area of the front side surface and is overlapped with the outer side wall of the cutter handle.

Preferably, the vertical spacing distance between the abutting convex part and the second thread is 1.5-6 mm.

Preferably, the internal included angle between the conical surface and the horizontal plane is 100 to 160 degrees.

Preferably, a sealing element is sleeved on the outer side wall of one end, corresponding to the screw cap, of the knife handle, and the sealing element abuts against the inner side wall of the screw cap.

Preferably, a clamping groove used for installing a sealing element is formed in the outer side wall of one end, corresponding to the screw cap, of the tool shank, the sealing element is made of soft materials, and the sealing element abuts against the tail end portion of the inner side wall of the screw cap.

The beneficial effects of the utility model reside in that: the utility model provides an anti-loosening cutter clamping assembly, the structure of handle of a knife, collet chuck and the spiral shell lid of this application and general handle of a knife in market, collet chuck and spiral shell lid is roughly the same, and is also similar at the in-service use assembling process, inserts the collet chuck with the cutter earlier in, the opening part of handle of a knife one end of packing into afterwards, and the spiral shell lid is sheathe in the handle of a knife and is screwed down to collet chuck fixed afterwards. In this assembling process, the spiral shell lid is screwed and is pushed down to when fixing collet in the handle of a knife, the tight convex part of support of spiral shell lid inside wall can butt handle of a knife lateral wall and form interference fit, this kind of interference fit adopts little interference fit, can not appear being difficult to screw the condition of packing into when reacing and conducting vibrations to the handle of a knife and take place, reach low-cost efficient and solved the spiral shell lid and appear not hard up problem because of vibrations, this application does not follow conventional bias of solving this technical problem, directly add setting such as installation of anti-vibration material or reinforcement spiral shell lid promptly, but conduct away vibrations through ingenious interference design, real low-cost high efficiency has been reached and the problem has been solved, therefore, the clothes hanger is strong in practicability.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic diagram of the side structure sectioning of the utility model.

Fig. 3 is an enlarged view of a portion a of fig. 2.

Fig. 4 is an exploded schematic view of the three-dimensional structure of the middle tool shank, the sealing member, the collet and the screw cap of the present invention.

Detailed Description

In order to facilitate the understanding of those skilled in the art, the present invention will be further described with reference to the following examples, which are not intended to limit the scope of the present invention.

As shown in fig. 1 to 4, a locking cutter centre gripping subassembly that moves, include handle of a knife 1, install in collet 2 and the spiral shell lid 3 of handle of a knife 1 one end, wherein collet 2 inserts in handle of a knife 1, and spiral shell lid 3 suit is in handle of a knife 1 and compresses tightly collet 2 setting, the lateral wall of handle of a knife 1 one end is provided with first screw thread 11, and the inside wall of spiral shell lid 3 is provided with the second screw thread 31 that corresponds first screw thread 11 and is located the tight convex part 32 of support above the second screw thread 31, should support tight convex part 32 butt handle of a knife 1 lateral wall and become interference fit, the lateral wall of collet 2 upper end is provided with conical surface 21, and the upper end of this conical surface 21 laminating butt spiral shell lid 3 lateral wall.

The locking cutter centre gripping subassembly that moves of embodiment, handle of a knife 1, collet 2 and the spiral shell lid 3 of this application are roughly the same with the general handle of a knife 1 in market, collet 2 and spiral shell lid 3's structure, and it is also similar at the in-service use assembly process, insert the cutter earlier in collet 2, the opening part of the 1 one end of handle of a knife of packing into afterwards, spiral shell lid 3 sheathes in handle of a knife 1 and screw down to collet 2 fixed afterwards. In this assembling process, the spiral shell lid 3 screws and pushes down to fixing collet 2 in handle of a knife 1 when, the tight convex part 32 that supports of 3 inside walls of spiral shell lid can butt 1 lateral wall of handle of a knife and form interference fit, this kind of interference fit adopts little interference fit, can not appear being difficult to screw the condition emergence of packing into when arriving to conduct vibrations to handle of a knife 1, reach low-cost efficient and solved the not hard up problem of spiral shell lid 3, this application does not follow conventional bias of solving this technical problem, directly add anti-vibration material or consolidate settings such as installation of spiral shell lid 3 promptly, but will shake the conduction through ingenious interference design and go out, really the problem has been solved to low-cost high efficiency, therefore, the clothes hanger is strong in practicability.

In this embodiment, the abutting convex portion 32 abuts against the outer side wall at the end of the tool holder 1. The interference fit position is arranged at the tail end of the cutter handle 1 and is closer to the front end of the cutter, so that the vibration force transmitted to the screw cap 3 from the elastic chuck 2 is transmitted to the cutter handle 1 timely and efficiently, and then the vibration force is output from the cutter handle 1 to prevent the vibration from being transmitted to the second thread 31 of the screw cap 3.

In this embodiment, a circle formed by the outer side wall at the end of the tool holder 1 and a circle formed by the front side surface of the abutting convex portion 32 are concentric circles, the numerical value of the outer side wall at the end of the tool holder 1 from the center of the circle is N, and the numerical value of the front side surface of the abutting convex portion 32 from the center of the circle is N-0.05 to 0.25 mm. The screw cover 3 is sleeved on the knife handle 1, so the circle center of the outer side wall of the knife handle 1 is certainly the same as that of the screw cover 3, the front side face of the abutting convex part 32 is closer to the circle center than the outer side wall at the tail end of the knife handle 1, the interference fit of the abutting convex part 32 is embodied by the numerical value of N-0.05-0.25 mm, the interference fit effect achieved in the numerical value range is optimal, the numerical value is obtained through multiple tests by an applicant, the interference achieved in the numerical value range can efficiently transmit vibration to the knife handle 1, and meanwhile the screw cover 3 cannot be installed too difficultly.

In this embodiment, the front side surface of the abutting convex portion 32 abuts against the outer side wall at the end of the tool holder 1, and the area of the front side surface is 50% to 80% coincident with the outer side wall of the tool holder 1. The front side face of the abutting convex part 32 is not completely attached to the outer side wall at the tail end of the cutter handle 1, the design is favorable for reducing the difficulty of assembling and disassembling the screw cap 3, the cutter is convenient to replace in daily use, and meanwhile, the contact area in the percentage range achieves the required interference fit effect, namely the conduction vibration effect.

In this embodiment, the vertical distance between the abutting convex portion 32 and the second thread 31 is 1.5 to 6 mm. This vertical interval distance within range can reach the best and prevent vibrations conduction to second screw 31, can not be because of being close to the conduction effect that has influenced interference fit department too, also can not lay because of having influenced original structure too far away, low-cost solution problem, the practicality is strong.

In this embodiment, the internal included angle between the conical surface 21 and the horizontal plane is 100 to 160 degrees. The angle setting of the conical surface 21 of the outer side wall of the upper end of the elastic chuck 2 is matched with the laminating and pressing setting of the upper end part of the inner side wall of the screw cap 3 in the range, so that a better pressing and fixing effect is realized, and the situation that the screw cap 3 is pressed down more and the upper end part of the elastic chuck 2 is opened more is prevented.

In this embodiment, a sealing member 12 is sleeved on an outer side wall of one end of the tool holder 1 corresponding to the screw cap 3, and the sealing member 12 abuts against an inner side wall of the screw cap 3. The outer side wall of one end, corresponding to the screw cap 3, of the tool shank 1 is provided with a clamping groove 13 for installing a sealing element 12, the sealing element 12 is made of soft materials, and the sealing element 12 abuts against the tail end portion of the inner side wall of the screw cap 3. The sealing element 12 made of soft material can adopt a plastic sealing ring in the market, and the sealing effect is effectively realized after the screw cap 3 and the knife handle 1 are assembled, so that the dual effects of water stopping and slag preventing are achieved.

In the description of the present invention, it should be noted that, for the orientation words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship are based on the orientation or positional relationship shown in the drawings, and it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific scope of the present invention.

Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and in the description of the invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected", if any, are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

The above-mentioned embodiments only express a plurality of embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. Locking cutter centre gripping subassembly that moves, including handle of a knife (1), install in collet (2) and spiral shell lid (3) of handle of a knife (1) one end, wherein collet (2) insert in handle of a knife (1), spiral shell lid (3) suit is in handle of a knife (1) and compress tightly collet (2) and set up its characterized in that: the outer side wall of handle of a knife (1) one end is provided with first screw thread (11), and the inside wall of screw cap (3) is provided with second screw thread (31) that corresponds first screw thread (11) and is located the tight convex part (32) of support of second screw thread (31) top, should support tight convex part (32) butt handle of a knife (1) lateral wall and become interference fit, the lateral wall of collet (2) upper end is provided with circular conical surface (21), and this circular conical surface (21) laminating butt screw cap (3) upper end of inside wall.

2. The anti-loosening tool clamping assembly according to claim 1, wherein: the abutting convex part (32) abuts against the outer side wall at the tail end of the cutter handle (1).

3. The anti-loosening tool clamping assembly according to claim 1, wherein: the circle formed by the outer side wall at the tail end of the tool handle (1) and the circle formed by the front side surface of the abutting convex part (32) are concentric circles, the numerical value of the outer side wall at the tail end of the tool handle (1) from the circle center is N, and the numerical value of the front side surface of the abutting convex part (32) from the circle center is N-0.05-0.25 mm.

4. The anti-loosening tool clamping assembly according to claim 1, wherein: the front side surface of the abutting convex part (32) abuts against the outer side wall at the tail end of the cutter handle (1), and 50-80% of the area of the front side surface of the abutting convex part (32) is overlapped with the outer side wall at the tail end of the cutter handle (1).

5. The anti-loosening tool clamping assembly according to claim 1, wherein: the vertical spacing distance between the abutting convex part (32) and the second thread (31) is 1.5-6 mm.

6. The anti-loosening tool clamping assembly according to claim 1, wherein: the inner included angle between the conical surface (21) and the horizontal plane is 100-160 degrees.

7. The anti-loosening tool clamping assembly according to claim 1, wherein: a sealing element (12) is sleeved on the outer side wall of one end, corresponding to the screw cap (3), of the knife handle (1), and the sealing element (12) is abutted to the inner side wall of the screw cap (3).

8. The anti-loosening tool clamping assembly according to claim 7, wherein: the outer side wall of one end of the knife handle (1) corresponding to the screw cover (3) is provided with a clamping groove (13) used for installing a sealing element (12), the sealing element (12) is made of soft materials, and the sealing element (12) is abutted to the inner side wall of the tail end part of the screw cover (3).