阅读说明：本技术 一种可缩进式数控加工用沉头刀具 (Retractable countersunk cutter for numerical control machining ) 是由 阮俊峰 于 2021-09-18 设计创作，主要内容包括：本发明公开了一种可缩进式数控加工用沉头刀具,包括旋转刀体,旋转刀体的下表面固定连接有刀架,刀架的下表面固定连接有刀头,刀头的侧边开设有圆槽,且圆槽内活动连接有小螺丝,小螺丝的侧边活动连接有刀片,刀头的中心部位开设有圆槽,且圆槽内活动连接有进缩装置,进缩装置包括支撑架,刀架的上表面固定连接有支撑架,刀头中心部位圆槽内壁固定连接有第二螺纹架,本发明通过设置旋转刀体和进缩装置,通过旋转螺栓螺帽上的十字槽,利用第一螺纹架与第二螺纹架之间的连接作用,利用螺栓的螺帽推动刀头整体移动,同时支撑架在工作中对刀头的整体实现固定,从而实现对刀头的伸缩作用,实现对刀头的精准调节。(The invention discloses a retractable countersunk head tool for numerical control machining, which comprises a rotary tool body, wherein the lower surface of the rotary tool body is fixedly connected with a tool rest, the lower surface of the tool rest is fixedly connected with a tool bit, the side edge of the tool bit is provided with a circular groove, a small screw is movably connected in the circular groove, the side edge of the small screw is movably connected with a blade, the central part of the tool bit is provided with a circular groove, a retraction device is movably connected in the circular groove and comprises a support frame, the upper surface of the tool rest is fixedly connected with the support frame, and the inner wall of the circular groove at the central part of the tool bit is fixedly connected with a second thread frame. Thereby realize the flexible effect to the tool bit, realize the accurate regulation to the tool bit.)

1. The utility model provides a retractable numerical control processing is with countersunk head cutter, includes rotatory cutter body (1), its characterized in that: the lower fixed surface of rotatory cutter body (1) is connected with knife rest (2), the lower fixed surface of knife rest (2) is connected with tool bit (3), the circular slot has been seted up to the side of tool bit (3), and circular slot internal swing joint has little screw (7), the side swing joint of little screw (7) has blade (6), the circular slot has been seted up at the central point of tool bit (3), and circular slot internal swing joint has into device (5) that contracts, it includes support frame (504) to advance device (5) that contracts, the last fixed surface of tool rest (2) is connected with support frame (504), tool bit (3) central point circular slot inner wall fixedly connected with second screw thread frame (503), the side swing joint of second screw thread frame (503) has first screw thread frame (502).

2. The retractable countersink tool for nc machining according to claim 1, wherein: the utility model discloses a novel cutter head, including the side fixedly connected with retaining device (4) of tool bit (3), retaining device (4) includes chassis (401), foot rest (402), torsional spring (403), connecting roller (404), connecting axle (405), left branch pole (406), right branch pole (407), the side fixedly connected with chassis (401) of tool bit (3), the elongated slot has been seted up to the inside of chassis (401), and the lateral wall swing joint of elongated slot has connecting axle (405), the one end swing joint of connecting axle (405) has left branch pole (406), the one end swing joint of connecting axle (405) has right branch pole (407), the side fixedly connected with foot rest (402) of chassis (401), the central point fixedly connected with torsional spring (403) of foot rest (402), the side fixedly connected with connecting roller (404) of torsional spring (403).

3. The retractable countersink tool for nc machining according to claim 1, wherein: the central part of first thread frame (502) fixedly connected with bolt (501), the one end of bolt (501) is equipped with the nut, and the cross flower groove has been seted up to the upper surface of nut.

4. The retractable countersink tool for nc machining according to claim 1, wherein: the side edge of the blade (6) close to the outer side is sharp, the blade (6) is made of a high-quality tungsten steel bar as a machine body, and the surface of the blade adopts a golden yellow titanium plating process.

5. The retractable countersink tool for nc machining according to claim 1, wherein: the diameter of the rotary cutter body (1) is four centimeters, the diameter of the cross section of the cutter rest (2) is five centimeters, and the diameter of the cutter head (3) is four centimeters.

6. The retractable countersink tool for numerical control machining according to claim 2, wherein: the length of the connecting shaft (405) is equal to that of the left support rod (406), friction force exists between the connecting shaft (405) and the left support rod (406) and the right support rod (407), and nylon can be installed on the outer edge of the connecting roller (404).

Technical Field

The invention relates to the technical field of machine tool machining, in particular to a retractable countersunk head tool for numerical control machining.

Background

The working part of the tool in the countersunk head tool is a part for generating and processing chips, and comprises a cutting edge, a structure for breaking or rolling up the chips, a space for discharging or storing the chips, a channel of cutting fluid and other structural elements, the working part of some tools is a cutting part, such as a turning tool, a plane cutter, a boring cutter, a milling cutter and the like, the working part of some tools comprises a cutting part and a calibration part, such as a drill bit, a reamer, an inner surface broach, a screw tap and the like, the cutting part is used for cutting off the chips by using the cutting edge, and the calibration part is used for polishing a cut processing surface and guiding the tools.

Traditional countersunk head cutter only reciprocates to the holistic part of cutter when carrying out work, but to the connection that arrives head part fixed, if needs precision machining, to the accurate control of tool bit control condition that may not be accurate through the digit control machine tool, mechanization enables its adjustment more accurately.

Meanwhile, when the traditional countersunk head cutter works, a large amount of scraps are generated after the cutter is machined, the scraps can be separated from a working area along a sliding groove of the cutter, but the front end of the sliding groove is not provided with a baffle plate to guide the movement track of the scraps, and meanwhile, if the situation that the blade is broken occurs, safety threats can be caused to surrounding people.

Disclosure of Invention

In order to overcome the above-mentioned defects in the prior art, an embodiment of the present invention provides a retractable countersunk head tool for numerical control machining, and the technical problem to be solved by the present invention is: how to realize the telescopic action to the cutter, avoid the blade fracture to personnel's security threat simultaneously.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a formula of can contracting numerical control is countersink tool for processing, includes the rotatory cutter body, the lower fixed surface of rotatory cutter body is connected with the knife rest, the lower fixed surface of knife rest is connected with the tool bit, the circular slot has been seted up to the side of tool bit, and circular slot internal swing joint has a little screw, the side swing joint of little screw has the blade, the circular slot has been seted up at the central point of tool bit, and circular slot internal swing joint has the device that contracts that advances, it includes the support frame to advance to contract the device, the last fixed surface of knife rest is connected with the support frame, tool bit central point circular slot inner wall fixedly connected with second thread frame, the side swing joint of second thread frame has first thread frame.

In a preferred embodiment, the side fixedly connected with retaining device of tool bit, retaining device includes chassis, foot rest, torsional spring, connecting roller, connecting axle, left branch, right branch pole, the side fixedly connected with chassis of tool bit, the elongated slot has been seted up to the inside of chassis, and the lateral wall swing joint of elongated slot has the connecting axle, the one end swing joint of connecting axle has left branch pole, the one end swing joint of connecting axle has right branch pole, the side fixedly connected with foot rest of chassis, the central point fixedly connected with torsional spring of foot rest, the side fixedly connected with connecting roller of torsional spring.

In a preferred embodiment, a bolt is fixedly connected to a central portion of the first threaded frame, a nut is arranged at one end of the bolt, and a cross-shaped flower groove is formed in the upper surface of the nut.

In a preferred embodiment, the side edge of the blade close to the outer side is sharp, the blade is made of a high-quality tungsten steel bar as a body, and the surface adopts a golden yellow titanium plating process.

In a preferred embodiment, the diameter of the rotating tool body is four centimeters, the diameter of the cross-section of the tool holder is five centimeters, and the diameter of the tool head is four centimeters.

In a preferred embodiment, the connecting shaft and the left support rod have the same length, friction force exists between the connecting shaft and the left support rod and between the connecting shaft and the right support rod, and nylon can be installed on the outer edge of the connecting roller.

In conclusion, the invention has the following beneficial effects:

1. according to the invention, through arranging the rotary cutter body and the retraction device, the first threaded frame on the bolt is rotated by rotating the cross groove on the bolt nut, the whole cutter head is pushed to move by utilizing the connection effect between the first threaded frame and the second threaded frame, and meanwhile, the whole cutter head is fixed by the support frame in the working process, so that the telescopic effect on the cutter head is realized, and the accurate adjustment on the cutter head is realized.

2. The invention adopts the arrangement of the cutter head and the baffle device, one end of the underframe is artificially stretched, then the connecting action of the connecting shaft and the left support rod is utilized to drive the left support rod and the right support rod to be folded and expanded, then the friction force of the connecting shaft, the left support rod and the right support rod is utilized to drive the distance between the foot rests to be increased, and the elastic force of the torsional spring is utilized to collect the cloth when the use is stopped, so that the cloth forms a baffle plate for blocking the front end of the cutter head, thereby guiding the movement of waste scraps, avoiding the breakage and the flying of the cutter head and playing a role in blocking, and greatly improving the safety of the machine.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the overall structure of the baffle unit of the present invention;

FIG. 3 is a schematic view of the overall construction of the blade of the present invention;

FIG. 4 is a schematic view of the overall structure of the retraction device of the present invention.

The reference signs are: 1. rotating the cutter body; 2. a tool holder; 3. a cutter head; 4. a baffle device; 401. a chassis; 402. a foot rest; 403. a torsion spring; 404. a connecting roller; 405. a connecting shaft; 406. a left strut; 407. a right strut; 5. a retraction device; 501. a bolt; 502. a first screw rack; 503. a second screw rack; 504. a support frame; 6. a blade; 7. a small screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-4, the invention provides a retractable countersunk head tool for numerical control machining, which comprises a rotary tool body 1, wherein a tool rest 2 is fixedly connected to the lower surface of the rotary tool body 1, a tool bit 3 is fixedly connected to the lower surface of the tool rest 2, a circular groove is formed in the side edge of the tool bit 3, a small screw 7 is movably connected in the circular groove, a blade 6 is movably connected to the side edge of the small screw 7, a circular groove is formed in the center part of the tool bit 3, a retraction device 5 is movably connected in the circular groove, the retraction device 5 comprises a support frame 504, a support frame 504 is fixedly connected to the upper surface of the tool rest 2, a second thread frame 503 is fixedly connected to the inner wall of the circular groove in the center part of the tool bit 3, and a first thread frame 502 is movably connected to the side edge of the second thread frame 503.

Carefully, the side of the cutter head 3 is fixedly connected with a baffle device 4, the baffle device 4 comprises a base frame 401, a foot rest 402, a torsion spring 403, a connecting roller 404, a connecting shaft 405, a left support rod 406 and a right support rod 407, the side of the cutter head 3 is fixedly connected with the base frame 401, an elongated slot is formed in the base frame 401, the side wall of the elongated slot is movably connected with the connecting shaft 405, one end of the connecting shaft 405 is movably connected with the left support rod 406, one end of the connecting shaft 405 is movably connected with the right support rod 407, the side of the base frame 401 is fixedly connected with the foot rest 402, the torsion spring 403 is fixedly connected to the center of the foot rest 402, and the side of the torsion spring 403 is fixedly connected with the connecting roller 404.

Carefully, the central part fixedly connected with bolt 501 of first thread shelf 502, the one end of bolt 501 is equipped with the nut, and the cross flower groove has been seted up to the upper surface of nut, utilizes helical structure to stretch out and draw back knife rest 2 and tool bit 3.

Carefully selecting, the side edge of the blade 6 close to the outer side is sharp, the blade 6 is made of a high-quality tungsten steel bar and is a machine body, and the surface adopts a golden yellow titanium plating process, so that the surface of the blade 6 is smooth, and the blade 6 is more durable.

Carefully selecting, the diameter of the rotary cutter body 1 is four centimeters, the diameter of the cross section of the cutter rest 2 is five centimeters, and the diameter of the cutter head 3 is four centimeters.

Carefully, the connecting shaft 405 and the left support rod 406 are equal in length, friction force exists between the connecting shaft 405 and the left support rod 406 and the right support rod 407, nylon can be installed on the outer edge of the connecting roller 404, and the chassis 401 is prevented from being separated from the integral baffle device 4 due to centrifugal force through the friction force.

The working principle of the invention is as follows:

step one, by rotating a cross groove on a nut of a bolt 501, a first thread frame 502 on the bolt 501 is rotated, the nut of the bolt 501 is used for pushing the whole cutter head 3 to move by utilizing the connection effect between the first thread frame 502 and a second thread frame 503, and meanwhile, the support frame 504 fixes the whole cutter head 3 in work, so that the telescopic effect on the cutter head is realized.

Step two, one end of the bottom frame 401 is stretched manually, then the left support rod 406 and the right support rod 407 are driven to fold and expand by utilizing the connecting action of the connecting shaft 405 and the left support rod 406, the distance between the foot rests 402 is driven to increase by utilizing the friction force of the connecting shaft 405, the left support rod 406 and the right support rod 407, and when the use is stopped, the cloth is collected by utilizing the elastic force of the torsion spring 403 by utilizing the cloth connected by the connecting roller 404, so that the cloth forms a baffle plate for blocking the front end of the cutter head, thereby guiding the movement of waste scraps and avoiding the phenomenon that the cutter head is broken and flies randomly to play a role in blocking.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the invention, only the structures related to the disclosed embodiments are referred to, other structures can refer to common designs, and the same embodiment and different embodiments of the invention can be combined with each other without conflict;

and finally: the above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, but rather as the subject matter of any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention.