Handheld burr trimming scraper tool

Abstract

The utility model discloses a handheld burr trimming scraper tool. Comprising a handle part, a clamping part and a tool bit, the clamping part comprises a tool locking outer sleeve, a butt-assembling tool bit seat and an inner sleeve, the tool locking outer sleeve and the butt-assembling tool bit seat are both arranged on the same side of the handle part, the butt-assembling tool bit seat is located in the center of the tool locking outer sleeve, the inner sleeve is arranged on the butt-assembling tool bit seat in a sleeving mode, and one end of the inner sleeve is in threaded connection with the tool locking outer sleeve; the butt-assembling tool bit seat is provided with a butt-assembling through hole, the bottom of the butt-assembling through hole is spherical, a ball is arranged in the through hole, the bottom diameter of the spherical through hole is smaller than the diameter of the ball, and the tool bit handle is provided with an annular notch. By means of threaded connection between the inner sleeve and the cutter locking outer sleeve, the inner sleeve can rotate and slide up and down on the oppositely-installed cutter head seat relatively, after the inner sleeve moves upwards or downwards, whether the balls are embedded into or slide out of the annular groove opening can be changed, the state of the inner sleeve can be locked through threaded rotation, external force does not need to be kept continuously, and the service life of the inner sleeve is prolonged. And the replacement operation of the tool bit can be completed, so that the misoperation of technicians is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of burr treatment tools, in particular to a handheld burr trimming scraper tool. Background Art

[0002] As is well known, in the hardware processing industry, metal parts are all processed by equipment. After the products are processed, there are residual chips and extremely fine microscopic metal particles on the surface of the metal parts. These metal particles are collectively referred to as burrs. The more burrs on the metal parts, the lower their quality standards. Therefore, after the metal parts are manufactured, burr trimming is generally required, and corresponding tools are needed for burr trimming, such as burr trimming scrapers.

[0003] At present, the existing burr trimming scrapers are generally divided into two types: the first type is an integrated fixed design of the tool head and the tool handle, that is, the tool head and the tool handle are fixedly connected. Users only hold the tool handle to scrape off burrs. However, when scraping off burrs, only the rotation of the operating wrist is relied on to change the direction of the tool head. Therefore, when scraping off burrs, it is very easy to scratch the surface layer of the parts. So this kind of scraper generally has too high technical requirements for operators; the second type, such as an installation fixture of a deburring scraper disclosed in the patent number CN201620186175.0, specifically mainly makes the tool head rotatable freely. When scraping off burrs, the self-gravity of the tool head is relied on as the downward pressure when scraping off burrs. When turning is needed, the tool head can be rotated freely by itself to avoid scratching the surface layer of the parts and make it more convenient to remove burrs of special-shaped parts. However, in terms of the replacement of the tool head, this patent uses a spring-pushing structure to achieve it. When replacing, it is necessary to hold the clamping part and then continuously press down. Only after pressing down in place and maintaining this state can the tool head be pulled out. It is found in use that many technicians, when operating, will, during the pressing-down process, due to the elastic force of the spring, bounce back and not reach the position, and then perform the action of pulling out the tool head, or after pressing down is completed, the tool head has not been pulled out and the pressing-down force is removed, resulting in accidental obstruction of the tool head extraction. On the one hand, it is easy to damage the tool head, and on the other hand, it is easy to scratch the operator's fingers because generally the hand is used to pull out the tool head. Moreover, during the use process, when the operator holds the clamping part and presses and pulls the clamping position, the locking part shifts, and the tool head is easy to loosen, damaging the tool head edge or the product. Summary of the Utility Model

[0004] Aiming at the deficiencies existing in the above-mentioned prior art, the purpose of the utility model is to provide a handheld burr trimming scraper tool that does not require continuous application of force when replacing the tool head.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A handheld burr trimming scraper tool, comprising a handle part, a clamping part and a cutter head. The clamping part includes a lock knife outer sleeve, a paired cutter head seat and an inner sleeve. The lock knife outer sleeve and the paired cutter head seat are both arranged at the same end of the handle part. The paired cutter head seat is located at the center of the lock knife outer sleeve. The inner sleeve is sleeved on the paired cutter head seat and is threadedly connected to the lock knife outer sleeve at one end. The paired cutter head seat is provided with a paired hole for inserting the handle of the cutter head. At least one through hole is arranged on the side wall of the paired cutter head seat. The through hole communicates with the paired hole. A ball is placed in the through hole. The aperture of the through hole at the communication with the paired hole is smaller than the diameter of the ball. A gap for accommodating the backward retreat of the ball is reserved between the upper port of the inner wall of the inner sleeve and the paired cutter head seat. The lower port of the inner wall of the inner sleeve is in mutual fit with the paired cutter head seat. The upper port and the lower port of the inner wall of the inner sleeve are smoothly bordered by a slope. The cutter head is provided with an annular groove opening for docking with the ball.

[0007] Preferably, the outer port of the through hole is an inclined groove opening for facilitating the automatic outward sliding of the ball.

[0008] Preferably, the cutter head is a universal scraper head with a standard shank diameter.

[0009] Preferably, a storage cavity for storing the cutter head is arranged at the other end of the handle part, and the storage cavity is sealed by a bottom cover.

[0010] Preferably, the bottom cover is screwed and fixed at the cavity opening of the storage cavity.

[0011] Preferably, a sealing ring is arranged on the bottom cover. After the bottom cover is locked with the storage cavity, the sealing ring forms a top pressure with the cavity opening of the storage cavity.

[0012] Preferably, anti-slip patterns are arranged on the outer walls of the inner sleeve and the bottom cover.

[0013] Due to the adoption of the above scheme, the utility model relies on the threaded connection between the inner sleeve and the lock knife outer sleeve, so that the inner sleeve can rotate and slide up and down relative to the paired cutter head seat. Combining the different gaps between the upper port and the lower port of the inner sleeve and the paired cutter head seat, after the inner sleeve moves up or down, it can be changed whether one end of the ball is embedded in or slides out of the annular groove opening. Thus, as a whole, it not only meets the basic working requirement that the cutter head can freely rotate to adapt to the burr removal of the part edges and corners, but also can lock the state of the inner sleeve by threaded rotation, without the need to continuously maintain an external force, and the cutter head replacement operation can also be completed, thereby reducing the misoperation of the technical personnel. Since a hollow cavity is arranged in the handle for storing spare cutter heads and accommodating the cutter head when not in use, it is convenient for safe storage and safe carrying. Description of the Drawings

[0014] Figure 1 It is a schematic structural diagram of an embodiment of the utility model.

[0015] Figure 2 It is a cross-sectional view of the clamping part of the embodiment of the present utility model.

[0016] Figure 3 It is a schematic structural diagram after the tool head of the embodiment of the present utility model is assembled. Specific embodiments

[0017] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the following further elaborates on the present utility model in conjunction with the attached drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0018] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the attached drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, "a plurality" means two or more, unless otherwise specifically defined.

[0019] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection. It may be a mechanical connection or an electrical connection. It may be directly connected or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0020] Such as Figures 1 to 3As shown in the figure, a handheld burr trimming scraper tool provided in this embodiment includes a handle portion 1, a clamping portion, and a tool head 2. The clamping portion includes a lock knife outer sleeve 3, a paired tool head seat 4, and an inner sleeve 5. The lock knife outer sleeve 3 and the paired tool head seat 4 are both arranged at the same end of the handle portion 1. The paired tool head seat 4 is located at the center of the lock knife outer sleeve 3. The inner sleeve 5 is sleeved on the paired tool head seat 4 and is threadedly connected to the lock knife outer sleeve 3 at one end. The paired tool head seat 4 is provided with a paired hole 41 for inserting the tool handle of the tool head 2. At least one through hole 42, generally two, is provided on the side wall of the paired tool head seat 4. The through hole 42 communicates with the paired hole 41. A ball 43 is placed in the through hole 42. The aperture of the through hole 42 at the communication with the paired hole 41 is smaller than the diameter of the ball 43. A gap 51 for accommodating the ball 43 to retreat is reserved between the upper port of the inner wall of the inner sleeve 5 and the paired tool head seat 4. The lower port of the inner wall of the inner sleeve 5 is in contact with the paired tool head seat 4. The upper port and the lower port of the inner wall of the inner sleeve 5 are smoothly connected by a slope 52. The tool head 2 is provided with an annular groove opening 21 for docking with the ball 43.

[0021] In this embodiment, it mainly relies on the threaded connection between the inner sleeve 5 and the lock knife outer sleeve 3 to enable the inner sleeve 5 to rotate and slide up and down relative to the paired tool head seat 4. Combining the different gaps 51 between the upper port and the lower port of the inner sleeve 5 and the paired tool head seat, after the inner sleeve moves up or down, it can change whether one end of the ball 43 is embedded in or slides out of the annular groove opening 21. Thus, the whole can not only meet the basic working requirement that the tool head 2 can rotate freely to adapt to the burr removal of the part edges and corners, but also lock the state of the inner sleeve 5 by threaded rotation. Without continuously maintaining external force, the replacement operation of the tool head 2 can also be completed, thereby reducing the misoperation of technicians.

[0022] When specifically assembling the tool head 2, it is divided into removing the tool and installing the tool:

[0023] When removing the tool, rotate the inner sleeve 5 to move the inner sleeve 5 to the lowermost end. At this time, the upper port of the inner sleeve 5 is docked with the through hole 42. The gap 51 existing at the upper port of the inner sleeve 5 at this time satisfies the retreat of the ball 43. Under the action of gravity, the ball 43 will retreat towards the end with the gap 51. Furthermore, the ball 53 disengages from the annular groove opening 21. Because the ball 43 disengages from the annular groove opening 21, the limit on the tool head 2 is lost, and thus the tool head 2 can be easily taken out.

[0024] When installing the knife, first keep the inner sleeve 5 at the bottom, then insert the handle of the knife head 2 into the mounting hole 41, and then rotate the inner sleeve 5 upward. As the inner sleeve 5 rotates gradually, the slope 52 of the inner sleeve 5 gradually contacts the ball 53 until the ball 43 is pushed at the other end of the through hole 42, until the lower end of the inner sleeve 5 receives the ball 43, and one end of the ball 43 is directly embedded in the annular groove 21, thus forming a limit for the knife head 2, and completing the knife installation operation. The design of the annular groove 21 will not affect the free rotation of the knife head 2. It should be noted that whether the knife is removed or installed, the ball 43 is not completely separated from the through hole 42.

[0025] Furthermore, in order to facilitate the ball 43 to smoothly retreat from the through hole 42 when space permits, the outer end of the through hole 42 in this embodiment is an oblique groove. Relying on this oblique groove, the ball 43 always has a tendency to roll out of the through hole 42.

[0026] Furthermore, the other end of the handle portion 1 of the present embodiment is provided with a storage cavity 11 for storing the cutter head 2, and the storage cavity 11 is sealed by a bottom cover 12. In actual use, the storage cavity 11 can be used to store the disassembled cutter head 2, or there are a variety of cutter heads 2 of different specifications to facilitate the replacement of the cutter head 2 according to needs at any time.

[0027] Furthermore, the bottom cover 12 of this embodiment is also screwed to the opening of the storage cavity 11 by means of threads. In addition, a sealing ring 13 is provided on the bottom cover 12. After the bottom cover 12 is locked with the storage cavity 11, the sealing ring 13 and the opening of the storage cavity 11 form a top pressure to prevent the bottom cover from loosening and have a certain oil and water resistance function to keep the cavity clean.

[0028] Furthermore, in order to prevent slipping during operation, anti-slip grooves 100 are provided on the outer walls of the inner sleeve 5 and the bottom cover 12 of this embodiment.

[0029] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A handheld burr trimming scraper tool, characterized in that: It includes a handle part, a clamping part and a cutter head. The clamping part includes a lock knife outer sleeve, a paired cutter head seat and an inner sleeve. The lock knife outer sleeve and the paired cutter head seat are both arranged at the same end of the handle part. The paired cutter head seat is located at the center of the lock knife outer sleeve. The inner sleeve is sleeved on the paired cutter head seat and is threadedly connected to the lock knife outer sleeve at one end. The paired cutter head seat is provided with a paired hole for the handle of the cutter head to be inserted. At least one through hole is provided on the side wall of the paired cutter head seat. The through hole communicates with the paired hole. A ball is placed in the through hole. The aperture of the through hole at the communication with the paired hole is smaller than the diameter of the ball. A gap for accommodating the backward movement of the ball is reserved between the upper port of the inner wall of the inner sleeve and the paired cutter head seat. The lower port of the inner wall of the inner sleeve fits with the paired cutter head seat. The upper port and the lower port of the inner wall of the inner sleeve are smoothly connected by a slope. The cutter head is provided with an annular groove opening for docking with the ball.

2. A hand-held burr trimming scraper tool according to claim 1, characterized in that: The outer port of the through hole is an inclined groove opening for facilitating the automatic outward sliding of the ball.

3. A handheld burr trimming scraper tool according to claim 1, characterized in that: The cutter head is a standard shank diameter general-purpose scraping cutter head, which is convenient for users to purchase and replace.

4. A hand-held burr trimming scraper tool according to claim 1, characterized in that: The other end of the handle part is provided with a storage cavity for storing the cutter head, and the storage cavity is sealed by a bottom cover.

5. The hand-held burr trimming scraper tool according to claim 4, characterized in that: The bottom cover is screwed and fixed at the cavity opening of the storage cavity.

6. The hand-held burr trimming scraper tool according to claim 5, wherein: A sealing ring is provided on the bottom cover. After the bottom cover is locked with the storage cavity, the sealing ring forms a top pressure with the cavity opening of the storage cavity.

7. A handheld burr trimming scraper tool according to claim 6, characterized in that: Anti-slip patterns are provided on the outer walls of the inner sleeve and the bottom cover.

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