Tool for removing burrs at small-aperture through hole

Abstract

The utility model provides a tool for removing burrs at a small-aperture through hole, and belongs to the technical field of machining. Comprising a bayonet removing knife, a movable gasket and a handle, an elastic gap is formed in the middle of the bayonet removing knife in the axial direction, the upper end of the elastic gap extends to a knife point and divides the bayonet removing knife into a left half bayonet removing knife and a right half bayonet removing knife, and the movable gasket is movably clamped in the elastic gap and changes the radial size of a knife head at the front end of the bayonet removing knife by moving front and back in the axial direction. When burrs are removed, the movable gasket is moved to be close to the handle end, the radial size of the tool bit at the front end of the burr removing knife is reduced, the tool bit can extend into the through hole, then the movable gasket is moved to be close to the tool bit, the gap between the tool bits of the burr removing knife is enlarged, the radial size of the tool bit is larger than the diameter of the through hole, and the burrs of the through hole can be removed by rotating the handle through the burr removing knife. The structure is simple and operation is convenient. The problem that burrs in the through holes with the diameters ranging from phi 1.5 mm to phi 3 mm are removed is solved, and the problem that the burrs at the positions of the small-aperture through holes are difficult to remove is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical processing, and in particular relates to a tool for removing burrs from intersecting holes with small diameters. Background Art

[0002] In the machining industry, burrs can seriously affect the precision and life of parts. If the inner hole is used as an oil circuit for precision parts, the oil will carry away the burrs and enter precision parts such as bearings and friction components, causing abnormal wear or direct damage. Small burrs are a big hidden danger, and the burr problem should not be underestimated. The burrs at two intersecting holes are usually removed with a triangular scraper or special tools. However, due to the hole depth or the size of the hole diameter, the triangular scraper cannot reach the intersection and cannot remove or clean it. Special tools have great limitations and have requirements for the size and depth of the two intersecting holes. For example, when a Φ5mm hole with a depth of 150mm intersects with countless Φ3mm holes, the large burrs at the intersecting holes are easy to remove, but there are no tools for small burrs. The intersecting hole deburring tools on the market do not have practical burr removal tools for such intersecting holes with diameters between Φ1.5mm and Φ3mm. Therefore, to address this type of problem, it is necessary to design a practical burr removal tool specifically for small apertures. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a tool for removing burrs from small-diameter intersecting holes. The purpose of the utility model is to solve the problem of difficulty in removing burrs from intersecting holes with diameters between Φ1.5mm and Φ3mm, and to solve the problem of difficulty in removing burrs from small-diameter intersecting holes.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by this utility model is:

[0005] The invention discloses a tool for removing burrs from intersecting holes of small diameters, comprising a bayonet remover, a movable gasket and a handle. The lower portion of the bayonet remover is fixedly connected to the handle. An elastic gap is provided in the middle of the bayonet remover along the axial direction. The upper end of the elastic gap extends all the way to the tip of the knife and divides the bayonet remover into two left and right half bayonets. The movable gasket is movably clamped in the elastic gap. The movable gasket changes the radial size of the front end blade of the bayonet remover by moving forward and backward along the axial direction.

[0006] The two half-bayonet removal knives have the same structure; each half-bayonet removal knives is composed of a knife head, a semi-cylindrical connecting section and a semi-cylindrical knife rod section connected in sequence from top to bottom;

[0007] The cutter head is a quarter-cylindrical cutter head, and the cylindrical diameter of the cutter head used for processing is 0.5 mm larger than the diameter of the small-diameter intersecting hole. The cutter heads of the two half-bayonet removal knives are diagonally distributed; when the width of the elastic gap is closed or disappears, the cylindrical diameter of the processing cutter head is 0.1-0.2 mm smaller than the diameter of the small-diameter intersecting hole.

[0008] The diameter of the semi-cylindrical connecting section is smaller than the diameter of the small-diameter intersecting hole, and the diameter of the semi-cylindrical shank section is larger than the diameter of the semi-cylindrical connecting section.

[0009] Furthermore, the front portion of the cutter head is a quarter of a conical surface and the edge forms a front edge of the cutter head, and the rear portion of the cutter head is a quarter of a frustum surface and the edge forms a rear edge of the cutter head.

[0010] Furthermore, the lower parts of the two semi-cylindrical shank sections in the two semi-bayonet removers are completely separated or integrally connected.

[0011] The upper and lower widths of the elastic gap are uniform and equal, the movable gasket is adapted in the elastic gap, and the thickness of the movable gasket is uniform and equal at all locations.

[0012] The width of the elastic gap is a tapered gap that is smaller at the top and larger at the bottom. The movable gasket is fitted in the elastic gap, and the thickness section of the movable gasket is also a tapered structure that is smaller at the top and larger at the bottom.

[0013] Furthermore, a knife bar mounting groove is provided at the front end of the handle, and top screw holes are provided on both sides of the knife bar mounting groove. The lower end of the bayonet remover is inserted into the knife bar mounting groove, and a top screw is provided in the top screw hole, and the top screw tightens the bayonet remover.

[0014] The advantages of this utility model compared with the prior art are:

[0015] 1. This solution is provided with a bayonet remover. An elastic gap is provided in the middle of the bayonet remover along the axial direction. The upper end of the elastic gap extends all the way to the blade tip and divides the bayonet remover into two half bayonet removers on the left and right sides. A movable gasket is movably clamped in the elastic gap. The movable gasket changes the radial size of the front end blade of the bayonet remover by moving forward and backward along the axial direction. When removing burrs, the movable gasket is moved closer to the handle end to reduce the radial size of the front end blade of the bayonet remover, so that the blade can be inserted into the intersecting hole. Then, the movable gasket is moved closer to the blade to increase the gap between the bayonet remover blades. The radial size of the blade is larger than the diameter of the intersecting hole. By turning the handle, the blade of the bayonet remover can remove burrs from the through hole. The structure is simple, the operation is convenient, and it is easy to operate manually.

[0016] 2. This solution solves the problem of burr removal in intersecting holes with diameters between Φ1.5mm and Φ3mm, and solves the problem of difficulty in removing burrs in small-diameter intersecting holes;

[0017] 3. This solution can remove burrs from through holes in an intuitive, accurate, economical and convenient manner. It has the advantage of good practicality and is easy to promote and apply. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the main view of the structure of the utility model;

[0019] Figure 2 This is a left view of the structure of the utility model with a uniform elastic gap bayonet remover;

[0020] Figure 3 This is a left side view of the structure of the utility model with a tapered elastic gap bayonet remover;

[0021] Figure 4 This is a front view of the structure of the half-removed bayonet in the utility model;

[0022] Figure 5 This is a left side view of the structure of the utility model with half of the bayonet removed;

[0023] Figure 6 This is a structural front view of the movable gasket in the utility model;

[0024] Figure 7 This is a side view of the structure of the movable gasket with uniform upper and lower thickness in the utility model;

[0025] Figure 8 This is a side view of the structure of the movable gasket with a tapered thickness in the present invention;

[0026] Figure 9 This is the utility model of the workpiece intersecting hole processing structure Figure 1 ;

[0027] Figure 10 This is the utility model of the workpiece intersecting hole processing structure Figure 2 . DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] It should be noted that, as used herein, the terms "comprise," "include," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising the elements.

[0030] See also Figure 1-10, describe in detail the embodiments of the present utility model.

[0031] Example 1: See Figure 1 As shown, a tool for removing burrs from small-diameter intersecting holes includes a bayonet remover 1, a movable gasket 2 and a handle 3. The lower portion of the bayonet remover 1 is fixedly connected to the handle 3. An elastic gap 1-2 is axially provided in the middle of the bayonet remover 1. The upper end of the elastic gap 1-2 extends all the way to the tip of the knife and divides the bayonet remover 1 into two left and right half bayonet removers 1-1. The movable gasket 2 is movably clamped in the elastic gap 1-2. The movable gasket 2 changes the radial size of the front end blade of the bayonet remover 1 by moving forward and backward along the axial direction.

[0032] When using this tool to remove burrs, refer to Figure 8 and 9 As shown, by axially moving the movable spacer 2 toward the handle end and manually pinching the front end of the bayonet remover 1 near the blade head, the gap between the two bayonet remover blades 1 is automatically eliminated, so that their radial dimensions are smaller than the diameter of the intersecting hole, allowing the blade heads to extend into the corresponding intersecting hole. Then, by moving the movable spacer toward the blade head end, the gap between the bayonet remover blades 1 is increased, and the radial dimensions of the blade heads are larger than the diameter of the intersecting hole, so that the blades contact the edge of the hole. The tool is rotated to complete the burr removal inside the intersecting hole. After the burr is removed, the movable spacer 2 is axially moved toward the handle again to reset, reducing the gap between the two blade heads of the bayonet remover 1, and the bayonet remover 1 is withdrawn from the intersecting hole.

[0033] This deburring tool can solve the problem of burr removal in small-diameter intersecting holes between Φ1.5mm and Φ3mm. It can intuitively, accurately, economically and conveniently remove small burrs in through holes. It has the advantage of good practicality and is easy to promote and apply.

[0034] In a specific embodiment: see Figure 4 and 5 As shown, the two half-bayonet removal knives 1-1 have the same structure; each of the half-bayonet removal knives 1-1 is composed of a knife head 1-1-1, a semi-cylindrical connecting section 1-1-2 and a semi-cylindrical knife rod section 1-1-3 connected in sequence from top to bottom.

[0035] The cutter head 1-1-1 is a quarter-cylindrical cutter head. The cylindrical diameter of the cutter head 1-1-1 used for processing is 0.5 mm larger than the diameter of the small-diameter intersecting hole. The cutter heads 1-1-1 of the two half-bayonet removal knives 1-1 are diagonally distributed. When the width of the elastic gap 1-2 is closed or disappears, the cylindrical diameter of the processing cutter head 1-1-1 is 0.1-0.2 mm smaller than the diameter of the small-diameter intersecting hole.

[0036] The diameter of the semi-cylindrical connecting section 1-1-2 is smaller than the diameter of the small-diameter intersecting hole, and the diameter of the semi-cylindrical shank section 1-1-3 is larger than the diameter of the semi-cylindrical connecting section 1-1-2.

[0037] The processing size and arrangement structure of the above-mentioned cutter head can ensure that the cutter head enters the corresponding intersecting hole, and after entering the hole, its radial size is larger than the diameter of the intersecting hole after the movable gasket is opened, ensuring that the blade can contact the edge of the intersecting hole and successfully remove burrs.

[0038] In a specific embodiment, the front portion of the cutter head 1-1-1 is a quarter-conical surface and the edge forms the cutter head front edge 1-1-1-1, and the rear portion of the cutter head 1-1-1 is a quarter-conical surface and the edge forms the cutter head rear edge 1-1-1-2. This cutter head blade structure can ensure that the cutter head can remove burrs on the inner edges of both holes in the intersecting hole, see Figure 9 and 10 shown.

[0039] In a specific embodiment, the lower parts of the two semi-cylindrical blade sections 1-1-3 in the two half-bayonet removal knives 1-1 are completely separated or integrally connected. Both structures can well realize the assembly of the two half-bayonet removal knives, with simple structure and convenient assembly.

[0040] In a specific embodiment: see Figure 2 and 7 As shown, the upper and lower widths of the elastic gap 1-2 are uniform and equal, the movable gasket 2 is adapted in the elastic gap 1-2, and the thickness of the movable gasket 2 is uniform and equal at all locations.

[0041] When using the above-mentioned movable gasket, before the cutter head enters the intersecting hole, the movable gasket needs to be moved close to the handle, and the cutter head part needs to be pinched by hand to ensure that the cutter head enters the intersecting hole.

[0042] In a specific embodiment: see Figure 3 and 8 As shown, the width of the elastic gap 1-2 is a tapered gap that is smaller at the top and larger at the bottom. The movable gasket 2 is adapted in the elastic gap 1-2, and the thickness section of the movable gasket 2 is also a tapered structure that is smaller at the top and larger at the bottom.

[0043] When the movable gasket is used, before the cutter head enters the intersecting hole, the movable gasket is moved close to the handle, and the radial size of the front cutter head portion will automatically decrease, so that the cutter head can enter the intersecting hole without being pinched by hand.

[0044] In a specific embodiment, the front end of the handle 3 is provided with a knife rod mounting groove 3-1, and top screw holes 3-2 are provided on both sides of the knife rod mounting groove 3-1. The lower end of the bayonet remover 1 is inserted into the knife rod mounting groove 3-1, and a top screw 4 is provided inside the top screw hole 3-2. The top screw 4 tightens the bayonet remover 1.

[0045] The above structure adopts the method of adding a handle to the rear of the knife bar to facilitate manual operation.

[0046] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0047] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A tool for removing burrs from small-diameter intersecting holes, characterized by: The invention comprises a bayonet remover (1), a movable gasket (2) and a handle (3); the lower portion of the bayonet remover (1) is fixedly connected to the handle (3); an elastic slit (1-2) is provided in the middle of the bayonet remover (1) along the axial direction; the upper end of the elastic slit (1-2) extends all the way to the tip of the knife and divides the bayonet remover (1) into two left and right half bayonets (1-1); the movable gasket (2) is movably clamped in the elastic slit (1-2); and the movable gasket (2) changes the radial size of the front end of the knife head of the bayonet remover (1) by moving forward and backward along the axial direction.

2. The tool for removing burrs from small-diameter intersecting holes according to claim 1, characterized in that: The two half-bayonet removal knives (1-1) have the same structure; each half-bayonet removal knives (1-1) is composed of a knife head (1-1-1), a semi-cylindrical connecting section (1-1-2) and a semi-cylindrical knife rod section (1-1-3) connected in sequence from top to bottom; The cutter head (1-1-1) is a quarter-cylindrical cutter head, and the cylindrical diameter of the cutter head (1-1-1) used for processing is 0.5 mm larger than the diameter of the small-diameter intersecting hole. The cutter heads (1-1-1) of the two half-bayonet removal knives (1-1) are diagonally distributed. When the width of the elastic gap (1-2) is closed or disappears, the cylindrical diameter of the processing cutter head (1-1-1) is 0.1-0.2 mm smaller than the diameter of the small-diameter intersecting hole. The diameter of the semi-cylindrical connecting section (1-1-2) is smaller than the diameter of the small-diameter intersecting hole, and the diameter of the semi-cylindrical shank section (1-1-3) is larger than the diameter of the semi-cylindrical connecting section (1-1-2).

3. The tool for removing burrs from small-diameter intersecting holes according to claim 2, characterized in that: The front part of the cutter head (1-1-1) is a quarter-conical surface and the edge forms the cutter head front edge (1-1-1-1), and the rear part of the cutter head (1-1-1) is a quarter-conical surface and the edge forms the cutter head rear edge (1-1-1-2).

4. The tool for removing burrs from small-diameter intersecting holes according to claim 2, characterized in that: The lower parts of the two semi-cylindrical blade rod sections (1-1-3) in the two half-bayonet removal blades (1-1) are completely separated or integrally connected.

5. The tool for removing burrs from small-diameter intersecting holes according to claim 1, characterized in that: The upper and lower widths of the elastic gap (1-2) are uniform and equal, the movable gasket (2) is adapted in the elastic gap (1-2), and the thickness of the movable gasket (2) is uniform and equal at all locations.

6. The tool for removing burrs from small-diameter intersecting holes according to claim 1, characterized in that: The width of the elastic gap (1-2) is a tapered gap with a smaller width at the top and a larger width at the bottom. The movable gasket (2) is fitted into the elastic gap (1-2). The thickness section of the movable gasket (2) is also a tapered structure with a smaller width at the top and a larger width at the bottom.

7. The tool for removing burrs from small-diameter intersecting holes according to claim 1, characterized in that: The front end of the handle (3) is provided with a knife bar mounting groove (3-1), and top screw holes (3-2) are provided on both sides of the knife bar mounting groove (3-1). The lower end of the bayonet (1) is inserted into the knife bar mounting groove (3-1), and a top screw (4) is provided in the top screw hole (3-2). The top screw (4) tightens the bayonet (1).

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