Reverse deburring and dimpling tool

Abstract

A reverse deburring and dimpling tool can perform reverse deburring and dimpling on the other side of a workpiece from the same side of the workpiece, so that operability and operation efficiency are improved. Comprising a clamping rod which is in a hollow cylindrical shape; the core body penetrates through the clamping rod and can reciprocate in the axial direction relative to the clamping rod; the tool bit part is made of metal, and the tool bit part is rotatably arranged on one side of the core body; and the guide part guides the tool bit part to rotate between an initial position where the tool bit part is retracted into the clamping rod and a working position where the tool bit part extends out of the clamping rod.

Description

Technical Field

[0001] The utility model relates to a reverse deburring and countersinking tool, in particular to a reverse deburring and countersinking tool for removing burrs around holes of workpieces in the aviation field. Background Art

[0002] In the past, in order to remove the burrs or countersinks left near the hole mouth during hole making, the Figure 5 The broach L shown is a deburring and countersinking tool used in conjunction with the air drill 8B. When it is necessary to remove burrs or perform countersinking near the lower opening of the machining hole 7B1 of the workpiece 7B, the upper end of the broach L is first inserted into the machining hole 7B1 of the workpiece 7B from the lower side of the workpiece 7B, then the upper end of the broach L is connected to the air drill 8B and the broach L is continuously pulled up until it is in close contact with the lower opening of the machining hole 7B1 of the workpiece 7B, then the air drill 8B is driven to drive the broach L to rotate to remove burrs or perform countersinking near the lower opening of the machining hole 7B1 of the workpiece 7B.

[0003] As described above, an air drill 8B and a back-pulling drill L are respectively provided on the upper and lower sides of the workpiece 7B. Accordingly, the operator needs to operate on the upper and lower sides of the workpiece 7B respectively. Therefore, it is required that sufficient operating space be reserved on both sides of the workpiece for configuring the workpiece 7B on the equipment.

[0004] However, in e.g. Figure 4 The space 93 between the first branch 92 and the second branch 93 of the closed angle workpiece 9 shown in (A) and Figure 4 The space between the upper arm 9A2 and the lower arm 9A3 of the I-shaped workpiece 9A shown in (B) is narrow (for example, the height is only 3-5 mm), while the length of a general broach is 10-20 cm. Therefore, the operator cannot place the broach in the Figure 4 The space between the first branch 92 and the second branch 93 of (A) or Figure 4 The space between the upper arm portion 9A2 and the lower arm portion 9A3 of the I-shaped workpiece shown in (B) is not Figure 4 The lower opening of the machining hole 91 of the workpiece 9 shown in (A) and Figure 4 The vicinity of the lower opening of the processed hole 9A1 of the I-shaped workpiece 9A shown in (B) is subjected to reverse deburring or countersinking.

[0005] Therefore, it is expected that there is no need to place the back pull drill in Figure 4 The space between the first branch 92 and the second branch 93 of (A) and Figure 4 The space between the upper arm portion 9A2 and the lower arm portion 9A3 of the I-shaped workpiece shown in (B) is only Figure 4 The upper side of the first branch 92 of the workpiece shown in (A), Figure 4 The upper side of the upper arm portion 9A2 of the I-shaped workpiece 9A shown in (B) is reversely deburred and countersunk. Utility Model Content

[0006] The utility model is completed in view of the above technical problems, and its purpose is to provide a reverse deburring and countersinking tool, which can reversely deburr and countersink the other side of a workpiece from the same side of the workpiece, thereby improving operability and operating efficiency.

[0007] In order to achieve the above-mentioned purpose, the first aspect of the utility model provides a reverse deburring and countersinking tool, which is characterized in that it includes: a clamping rod, which is formed into a hollow cylindrical shape; a core body, which passes through the clamping rod and can reciprocate axially relative to the clamping rod; a metal cutter head, which can be rotatably arranged on one side of the core body; and a guide part, which guides the cutter head to rotate between an initial position retracted into the clamping rod and a working position extended from the clamping rod.

[0008] According to the above structure, the guide portion guides the cutter head to move between the initial position of being retracted into the clamping rod and the working position extending from the clamping rod, and the reverse deburring and countersinking tool with the cutter head retracted into the clamping rod can be passed through the processing hole to the other side of the workpiece from one side of the workpiece, and connected to the air drill on one side of the workpiece, so that the hole opening on the other side of the processing hole of the workpiece can be reversely deburred and countersunk by operating only from the same side of the workpiece. In this way, compared with the prior art, only one side of the workpiece is required to have a sufficiently large space. Therefore, even if the space on the other side of the workpiece is narrow or closed, the reverse deburring and countersunking operation can be performed.

[0009] The reverse deburring and countersinking tool of the second aspect of the utility model is based on the reverse deburring and countersinking tool of the first aspect, and is characterized in that a first cap portion is formed at the end of one side of the core body, and a second cap portion is formed at the end of the other side, the diameter of the first cap portion is smaller than the inner diameter of the clamping rod, and the diameter of the second cap portion is larger than the inner diameter of the clamping rod, and the guide portion includes: a compression spring, which is sleeved on the core body between the other side of the clamping rod and the second cap portion; and a strong magnet installed on the surface of one side of the first cap portion.

[0010] According to the above structure, on the basis of forming a first head portion with a diameter smaller than the inner diameter of the clamping rod and a second head portion with a diameter larger than the inner diameter of the clamping rod at the ends of both sides of the core body, a compression spring is sleeved on the core body between the other side of the clamping rod and the second head portion and a strong magnet is installed on the surface of one side of the first head portion, so that the strong magnet attracts the cutter head to be screwed into the clamping rod in the initial state to reduce the overall size of the clamping rod so as to be inserted into the processing hole and reach the other side of the workpiece, and in the working state, the core body is pushed out of the clamping rod through the compression spring to prepare for reverse deburring and countersinking. Thus, the guide portion can guide the cutter head into the initial state and the working state.

[0011] The reverse deburring and countersinking tool of the third aspect of the utility model is based on the reverse deburring and countersinking tool of the second aspect of the utility model, and is characterized in that the tool head is formed as a thin plate in a trapezoidal shape when viewed from above, and a concave hole for accommodating the tool head is formed at the one end of the clamping rod, and the concave hole is formed with a length, width and height that are all larger than the length of the bottom side of the trapezoid of the tool head, the height of the trapezoid and the thickness of the tool head, and the tool head is configured to be able to rotate in the concave hole.

[0012] According to the above structure, since the concave hole is formed to have a length, width and height that are larger than the length of the bottom side of the blade head, the height of the trapezoid and the thickness of the blade head, the blade head can be accommodated and rotated inside the clamp rod.

[0013] The reverse deburring and countersinking tool of the fourth aspect of the utility model is based on the reverse deburring and countersinking tool of the third aspect of the utility model, and is characterized in that the initial position of the cutter head is the position when the cutter head is fully retracted into the recessed hole, and the working position of the cutter head is the position where the cutter head extends out from the recessed hole and the bottom side of the trapezoid forms an angle of 80 to 90 degrees with the clamping rod.

[0014] According to the above structure, by setting the initial position of the tool head to the position where the tool head is completely retracted into the recessed hole, and setting the working position of the tool head to the position where the tool head extends out from the recessed hole and the bottom edge of the trapezoid is at an angle of 80 to 90 degrees with the clamping rod, the reverse deburring and countersinking tool can smoothly pass through the processed hole and perform reverse deburring and countersinking on the hole opening on the other side of the processed hole from the other side of the workpiece.

[0015] The reverse deburring and countersinking tool of the fifth aspect of the utility model is based on the reverse deburring and countersinking tool of the fourth aspect of the utility model, and is characterized in that a female thread is formed on the inner circumferential surface of the end portion on the other side of the clamping rod, and a male thread is formed on the outer circumferential surface of the portion of the core body extending from the clamping rod, and the female thread and the male thread constitute a positioning portion for positioning the core body relative to the clamping rod.

[0016] According to the above structure, by screwing the female thread formed on the inner peripheral surface of the end portion on the other side of the clamping rod into the male thread formed on the outer peripheral surface of the portion of the core body extending from the clamping rod, the core body can be positioned relative to the clamping rod, thereby positioning the cutter head after it starts to rotate. Thus, the subsequent rotation action can be performed stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the drawings required for the implementation or the prior art are briefly introduced below. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 (A) is a top view showing the reverse deburring and countersinking tool of this embodiment in a state where the cutter head is retracted into the clamping rod, Figure 1 (B) means along Figure 1 A cross-sectional view taken along line II in (A).

[0019] Figure 2 (A) is a top view showing the reverse deburring and countersinking tool of this embodiment in a state where the cutter head is extended from the clamping rod, Figure 2 (B) means along Figure 2 A cross-sectional view taken along line II-II in (A).

[0020] Figure 3 It is a schematic diagram showing a process in which a countersinking tool removes burrs or countersinks a workpiece in reverse deburring according to the present embodiment.

[0021] Figure 4 (A) is a schematic diagram showing the structure of a closed-angle workpiece in the prior art. Figure 4 (B) is a schematic diagram showing the structure of an I-shaped workpiece in the prior art.

[0022] Figure 5 The present invention is a schematic diagram showing a process of deburring and countersinking the openings on both sides of a machined hole of a workpiece by operating from both sides of the workpiece in the prior art.

[0023] (Explanation of symbols)

[0024] 1. Reverse deburring and countersinking tools;

[0025] 2 clamping rod;

[0026] 21 clamping rod body;

[0027] 211: hollow portion of the clamping rod;

[0028] 212 female thread;

[0029] 213 first cantilever;

[0030] 214 second cantilever;

[0031] 215 concave hole;

[0032] 216 mounting holes;

[0033] 217 mounting shaft;

[0034] 3 core;

[0035] 31 core body;

[0036] 32 first head;

[0037] 33 The second head;

[0038] 34 male thread;

[0039] 4 compression spring;

[0040] 5 knife head;

[0041] 51 through hole;

[0042] 52 upper side;

[0043] 53 bottom edge;

[0044] 54 a first hypotenuse portion;

[0045] 55 second hypotenuse portion;

[0046] 6 strong magnets;

[0047] 7 artifacts;

[0048] 71 machining holes;

[0049] 8. Air drill. DETAILED DESCRIPTION

[0050] Below, refer to Figures 1 to 5 Various embodiments of the reverse deburring and countersinking tool of the utility model are described. The reverse deburring and countersinking tool of the utility model can perform reverse deburring and countersinking operations on the other side of a workpiece from the same side, thereby improving operability and operating efficiency. Figure 1 (A) is a top view showing the reverse deburring and countersinking tool of this embodiment in a state where the cutter head is retracted into the clamping rod, Figure 1 (B) means along Figure 1 A cross-sectional view taken along line II in (A). Figure 2(A) is a top view showing the reverse deburring and countersinking tool of this embodiment in a state where the cutter head is extended from the clamping rod, Figure 2 (B) means along Figure 2 A cross-sectional view taken along line II-II in (A). Figure 3 It is a schematic diagram showing a process in which a countersinking tool removes burrs or countersinks a workpiece in reverse deburring according to the present embodiment. Figure 4 (A) is a schematic diagram showing the structure of a closed-angle workpiece in the prior art. Figure 4 (B) is a schematic diagram showing the structure of an I-shaped workpiece in the prior art. Figure 5 The present invention is a schematic diagram showing a process of deburring and countersinking the openings on both sides of a machined hole of a workpiece by operating from both sides of the workpiece in the prior art.

[0051] In addition, for the sake of convenience, Figure 1 The axial direction of the clamping rod 2 and the core body 3 in (A) and (B) is set as the X direction, one side of the X direction is set as the X1 side (i.e., the side of the clamping rod 2 provided with the cutter head 5), and the other side is set as the X2 side. Figure 1 The height direction of the clamping rod 2 and the core body 3 is set as the Z direction, one side of the Z direction is set as the Z1 side, and the other side is set as the Z2 side, the direction orthogonal to both the X direction and the Z direction is set as the Y direction, one side of the Y direction is set as the Y1 side, and the other side is set as the Y2 side.

[0052] (Overall structure of reverse deburring and countersinking tool 1)

[0053] Figure 1 and Figure 2 The sectional views respectively show the state that the cutter head is completely retracted into the concave hole of the clamping rod or extended from the concave hole of the clamping rod. They respectively show the connection relationship between the various parts of the reverse deburring and countersinking tool in the initial state before work starts and in the working state.

[0054] like Figure 1 , 2 As shown, the reverse deburring and countersinking tool 1 of this embodiment is constructed to include a clamping rod 2, a core body 3 passing through the clamping rod 2, a compression spring 4 installed between the core body 3 and the clamping rod 1, a tool head 5 rotatably installed on the X1 side of the clamping rod 2, and a strong magnet 6.

[0055] Specifically, the clamping rod 2 is as follows Figure 1The structure shown in (B) includes a clamping rod main body 21, a clamping rod hollow portion 211 is formed through the interior of the clamping rod main body 21, a female thread 212 is formed at the X2 side end of the inner circumferential surface of the clamping rod hollow portion 211, and a recessed hole 215 is formed at the X1 side end of the clamping rod main body 21. The recessed hole 215 is surrounded by a first cantilever 213 on the Z1 side and a second cantilever 214 on the Z2 side to form a roughly rectangular shape, and its dimensions in the X direction, Y direction and Z direction are all larger than the dimensions of the tool head 5 in the X direction, Y direction and Z direction.

[0056] In addition, a mounting hole 216 is formed at the approximate center of each of the first cantilever 213 and the second cantilever 214, and correspondingly, a through hole 51 is also formed at the approximate center of the cutter head 5. The mounting shaft 217 is sequentially passed through the mounting hole 216 of the first cantilever 213, the through hole 51 of the cutter head 5, and the mounting hole 216 of the second cantilever 214 from the Z1 side to the Z2 side, and the Z1 side end portion and the Z2 side end portion of the mounting shaft 217 are respectively installed to be rotatable relative to the mounting hole 216 of the first cantilever 213 and the mounting hole 216 of the second cantilever 214, and the main body of the mounting shaft 217 is installed and fixed in the through hole 51 of the cutter head 5 via an adhesive (not shown), so that the cutter head 5 can be rotatably installed in the recessed hole 215.

[0057] Moreover, the core body 3 is inserted into the clamping rod hollow portion 211 of the clamping rod 2, and a first cylindrical head portion 32 is formed on its X1 side. The first head portion 32 is exposed from the X1 side of the clamping rod main body 21, and its diameter is slightly larger than the diameter of the clamping rod hollow portion 211 (that is, the inner diameter of the clamping rod 2), and it presses against the core body 3 on the X1 side to prevent the core body 3 from retracting into the clamping rod hollow portion 211; a second cylindrical head portion 33 is formed on its X2 side, and the second head portion 33 is exposed from the X2 side of the clamping rod main body 21, and its diameter is approximately the same as the diameter of the clamping rod main body 21 (that is, the inner diameter of the clamping rod 2), but a male thread 34 is formed on the portion of the core body 3 that extends from the clamping rod hollow portion 211 to the X2 side until the second head portion 33, and a compression spring 4 is sleeved on the male thread 34.

[0058] At this time, the compression spring 4 is compressed between the clamp rod body 21 and the second cap 33 , the first cap 32 abuts against the X1 side end surface of the clamp rod body 21 , and the strong magnet 6 is attached to the X1 side surface of the first cap 32 .

[0059] In addition, if Figure 1As shown in (A), the trapezoidal cutter head 5 is formed to include an upper side 52, a bottom side 53 opposite to the upper side 52, a first oblique side 54 and a second oblique side 55 formed by connecting the two ends of the upper side 52 and the two ends of the bottom side 53. The "dimensions of the cutter head 5 in the X direction, the Y direction and the Z direction" mentioned above refer to the size of the bottom side 53 of the cutter head 5, the height between the upper side 52 and the bottom side 53, and the thickness of the cutter head 5.

[0060] like Figure 1 As shown in (A) and (B), in the initial state, under the magnetic attraction of the strong magnet 6, the cutter head 5 is screwed into the recessed hole 215 of the clamping rod body 21 around the mounting shaft 217, and the corner of the bottom edge 53 on the X2 side abuts against the strong magnet 6. Figure 1 The following is an example in which the corner of the bottom edge portion 53 of the cutting head portion 5 shown in (A) abuts against the strong magnet 6. In this case, the magnetism between the strong magnet 6 and the corner of the bottom edge portion 53 on the X2 side is greater than the magnetism between the strong magnet 6 and the corner of the bottom edge portion 53 on the X1 side.

[0061] In this embodiment, in order to utilize the magnetic attraction of the strong magnet 6 to attract the cutter head 5 and rotate it, the cutter head 5 is made of a ferromagnetic material.

[0062] When the reverse deburring and countersinking tool 1 starts to work and enters the working state, Figure 2 As shown in (A) and (B), the strong magnet 6 pushes the cutter head 5 around Figure 2 (A) is rotated counterclockwise to rotate out of the recessed hole 215 until Figure 2 The bottom side portion 53 shown in (A) is in a state perpendicular to the X direction.

[0063] According to the reverse deburring and countersinking tool 1 constructed as described above, Figure 3 The steps shown are for reverse deburring or countersinking.

[0064] like Figure 3 As shown, Figure 1 The reverse deburring and countersinking tool 1 in the initial state shown is in a state where the cutter head 5 is screwed into the concave hole 215 under the magnetic attraction of the strong magnet 6, and approaches the machining hole 71 of the workpiece 7 downward, and is inserted through the machining hole 71 to a certain distance below the workpiece 7. At this time, the second head 33 of the core body 3 is pressed to push the lower corner of the second bevel portion 54 of the cutter head 5 through the core body 31 of the core body 3 and the strong magnet 6, so as to be screwed out of the concave hole 215 until the bottom edge portion 53 is perpendicular to the X direction. Next, the upper end of the reverse deburring and countersinking tool 1 is connected to the air drill, and at the same time pulled upward to the position where the cutter head 5 abuts against the lower side of the workpiece 7.

[0065] Next, the air drill 8 is driven to rotate the cutter head 5 so as to remove the burrs around the lower opening of the processing hole 71 or perform countersinking.

[0066] In this embodiment, Figure 3 Only the process of deburring and countersinking the lower side of the processed hole 71 of the workpiece 7 is shown. Although not specifically shown in the figure, the reverse deburring and countersinking tool 1 of this embodiment can also deburr and countersink the upper side of the processed hole 71 of the workpiece 7.

[0067] It can be seen that according to the reverse deburring and countersinking tool 1 of the present embodiment, the hole opening on the other side of the workpiece's processing hole can be reversely deburred and countersunk by operating only on one side of the workpiece. Therefore, it is sufficient that the space on only one side of the workpiece is large enough, and it is not necessary for the space on both sides of the workpiece to be large enough. Therefore, even if the space on one side of the workpiece is so small that it cannot be operated or is even closed, the burrs on one side of the workpiece's processing hole can be removed or countersunk by operating on the other side of the workpiece. In this way, even if the space on one side of the workpiece is small or closed, it does not affect the reverse deburring or countersinking operations on the workpiece's processing hole. As a result, the operability and efficiency of reverse deburring and countersinking can be greatly improved.

[0068] The embodiments of the present invention have been described. However, in addition to the technical solutions described in the above embodiments, the elements of the above embodiments may be combined to obtain the technical solutions of the present invention without violating the spirit of the present invention.

[0069] In the above embodiment, in the initial state, Figure 1 The magnetic attraction between the X2 side corner of the cutter head and the strong magnet is greater than the magnetic attraction between the X1 side corner of the cutter head and the strong magnet. The cutter head rotates counterclockwise in the XY plane as an example, but the utility model is not limited to this. It can also be in the initial state. Figure 1 The magnetic attraction between the X1 side corner of the tool head and the strong magnet shown in (A) is greater than the magnetic attraction between the X2 side corner of the tool head and the strong magnet, and the tool head rotates clockwise in the XY plane.

[0070] In the above-mentioned embodiment, the cutter head is made of ferromagnetic material, but the present invention is not limited thereto, and other types of materials may also be used as long as they can be attracted by a strong magnet.

[0071] In the above embodiment, the cutter head is formed into a trapezoidal shape, but the present invention is not limited thereto, and may be other shapes such as a circle or annular ring as long as it can be accommodated in the recessed hole.

[0072] In the above embodiment, a compression spring is provided between the clamp rod and the core rod as a guide portion, but the present invention is not limited thereto, and other elastic members may be used as long as the core body can be supported to reciprocate relative to the clamp rod.

[0073] In the above embodiment, the magnetic attraction between the strong magnet and the cutter head is used to screw the cutter head into the recessed hole, but the present invention is not limited thereto, and other forms of force such as electromagnetic induction force may also be used to screw the cutter head into the recessed hole.

[0074] In the above embodiment, a strong magnet on one side of the core and a compression spring on the other side of the core are used to form the guide portion, but the utility model is not limited to this. As long as the guide tool head can be guided to reciprocate between the initial position fully retracted into the recessed hole and the working position extending from the recessed hole, other forms of combination can also be used.

Claims

1. A reverse deburring and countersinking tool, characterized in that: include: A clamping rod, wherein the clamping rod is formed into a hollow cylindrical shape; A core body, the core body passes through the clamping rod and can reciprocate along the axial direction relative to the clamping rod; A cutter head, which is made of ferromagnetic material and rotatably disposed on one side of the core; as well as The guide portion guides the cutter head portion to rotate between an initial position where the cutter head portion is retracted into the clamping rod and a working position where the cutter head portion is extended from the clamping rod.

2. The reverse deburring and countersinking tool according to claim 1, characterized in that: A first cap portion is formed at one end of the core body, and a second cap portion is formed at the other end of the core body. The diameter of the first head portion is smaller than the inner diameter of the clamping rod, The diameter of the second head portion is larger than the inner diameter of the clamping rod, The guide portion comprises: a compression spring, wherein the compression spring is sleeved on the core body between the other side of the clamping rod and the second head portion; and A strong magnet is mounted on a surface of one side of the first cap portion.

3. The reverse deburring and countersinking tool according to claim 2, characterized in that: The blade head is formed into a thin plate having a trapezoidal shape when viewed from above. A concave hole for receiving the cutter head is formed at one end of the clamping rod. The concave hole is formed so that the length, width and height are all larger than the length of the bottom side of the trapezoid of the tool head, the height of the trapezoid and the thickness of the tool head, and the tool head is configured to be rotatable in the concave hole.

4. The reverse deburring and countersinking tool according to claim 3, characterized in that: The initial position of the cutter head is the position when the cutter head is completely retracted into the concave hole. The working position of the cutter head is a position where the cutter head extends out of the concave hole and the bottom side of the trapezoid forms an angle of 80 to 90 degrees with the clamping rod.

5. The reverse deburring and countersinking tool according to claim 4, characterized in that: A female thread is formed on the inner peripheral surface of the end portion on the other side of the clamping rod. A male thread is formed on the outer peripheral surface of the portion of the core extending from the clamping rod, The female thread and the male thread constitute a positioning portion for positioning the core body relative to the clamp rod.

Images