Special adjustable reverse chamfer non-standard forming cutter

Abstract

The utility model relates to the technical field of machining, in particular to a special adjustable reverse chamfer non-standard forming cutter which comprises a cutter handle, a cutter bar, a movable piston, a shaft pin and a blade, one end of the cutter bar is fixedly connected to the cutter handle, the rotatable blade is installed in the other end of the cutter bar, a piston hole and a shaft pin hole which are concentric are formed in the center of the cutter bar, and the movable piston is arranged in the piston hole. The movable piston and the shaft pin are respectively installed in the piston hole and the shaft pin hole in a linear sliding mode, one end of the movable piston is fixedly connected with one end of the shaft pin, a piston position adjusting device is arranged at the position, corresponding to the movable piston, of the cutter bar, and a blade limiting elastic element is installed at the end, provided with the blade, of the cutter bar. The special adjustable reverse chamfer non-standard forming tool is specially designed for reverse chamfer machining of deep holes in cavity parts, and the problems that a traditional method is low in efficiency, unstable and uncontrollable in product consistency are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a special adjustable reverse chamfering non-standard forming tool. Background Art

[0002] In the field of mechanical processing and precision parts manufacturing, especially for the internal deep hole processing of cavity parts, it is often necessary to perform chamfering on the hole. Figure 1 and Figure 2 The workpiece 1 shown in the figure requires a chamfer 11 in its internal cavity. These components are widely used in various fields of the mechanical manufacturing industry, such as aerospace, automotive manufacturing, and IC equipment. However, due to the complex structure of these cavity parts and the difficulty of machining the chamfer of the deep internal holes with conventional tools, many challenges are encountered in actual production.

[0003] Traditional machining methods rely primarily on manual deburring and chamfering by fitters. However, this method is not only inefficient but also suffers from inconsistent machining quality, which can easily lead to product anomalies. Furthermore, manual machining makes it difficult to control product consistency, severely impacting overall part quality. This is particularly true for difficult-to-cut materials such as stainless steel, titanium alloys, and high-temperature alloys, making manual machining significantly more difficult and time-consuming.

[0004] Given the above-mentioned problems, there is an urgent need for a solution that can efficiently, stably, and achieve high-quality reverse chamfering of deep holes in cavity-type parts. Therefore, this utility model proposes a special, adjustable reverse chamfering tool for non-standard forming, aiming to solve the bottleneck problem of traditional processing methods through technological innovation, thereby improving processing efficiency and product quality. Utility Model Content

[0005] In order to solve the above problems, the utility model provides a special adjustable reverse chamfering non-standard forming tool. This special adjustable reverse chamfering non-standard forming tool is specially designed for reverse chamfering processing of deep holes inside cavity-type components, solving the problems of low efficiency, instability and uncontrollable product consistency of traditional methods.

[0006] The technical solution of the utility model is as follows:

[0007] A special adjustable reverse chamfering non-standard forming tool, comprising a tool handle, a tool rod, a movable piston, an axis pin and a blade, wherein one end of the tool rod is fixedly connected to the tool handle, a rotatable blade is installed inside the other end of the tool rod, a concentric piston hole and an axis pin hole are provided at the center of the tool rod, the movable piston and the axis pin are respectively installed in the piston hole and the axis pin hole for linear sliding, one end of the movable piston is fixedly connected to one end of the axis pin, a piston position adjustment device is provided at a position corresponding to the movable piston on the tool rod, and a blade limiting elastic element is installed at the end of the tool rod where the blade is installed;

[0008] In the non-chamfering state, the movable piston is in a position facing the tool handle, and the blade is in a state of not extending out of the tool rod under the action of the blade limiting elastic element;

[0009] When changing from the non-chamfered state to the chamfered state, the piston is moved toward the blade by the piston position adjustment device, and the shaft pin moves under the drive of the moving piston, thereby pushing the blade to rotate so that the blade edge extends out of the tool rod.

[0010] The blade limiting elastic element is a spring sheet fixed to the end of the blade rod.

[0011] A knife groove is provided at a position on the knife rod corresponding to the knife blade to limit the further rotation of the knife blade after the knife blade rotates to the right position.

[0012] The piston position adjustment device includes an adjusting screw. A threaded hole matching the adjusting screw is provided on the tool rod. A tapered groove is provided on the movable piston. The end of the adjusting screw is provided with a conical head matching the tapered groove.

[0013] The cross section of the blade is square. In a non-chamfered state, two opposite faces of the blade and another two opposite faces are parallel and perpendicular to the center line of the shank, respectively.

[0014] The blade groove is restricted from further rotation after the blade is rotated 45° from the non-chamfered state.

[0015] The adjusting screw is a hexagon socket screw.

[0016] The spring sheet is fixedly connected to the knife bar by screws.

[0017] The shape of the end portion of the shaft pin that cooperates with the blade is configured to match the shape of the blade.

[0018] The end of the shaft pin that cooperates with the blade is set to a 45° bevel.

[0019] The beneficial effects of the present invention are:

[0020] 1. The utility model discloses a special adjustable reverse chamfering non-standard forming tool, which is specially designed for reverse chamfering of deep holes inside cavity parts, solving the problems of low efficiency, instability and uncontrollable product consistency of traditional methods (such as manual processing by fitters); it is particularly suitable for processing difficult-to-cut materials such as stainless steel, titanium alloy and high-temperature alloy.

[0021] 2. The utility model discloses a special adjustable reverse chamfer non-standard forming tool. This special adjustable reverse chamfer non-standard forming tool can be used on a CNC boring and milling machine to significantly improve the processing efficiency by more than 5 times and ensure that the processing quality is 100% qualified.

[0022] 3. The utility model discloses a special adjustable reverse chamfering non-standard forming tool. The operation process of the special adjustable reverse chamfering non-standard forming tool is simple. The movement of the movable piston and the shaft pin can be controlled by adjusting the screw (such as the hexagon socket screw), thereby pushing the blade to rotate to the desired angle; in addition, the design of the blade limiting elastic element (such as the spring sheet) and the knife groove ensures the stable position of the blade and the limitation after rotation into place.

[0023] 4. The utility model discloses a special adjustable reverse chamfering non-standard forming tool, which has a simple structure and is easy to manufacture and maintain.

[0024] 5. The utility model discloses a special adjustable chamfering non-standard forming tool. This special adjustable chamfering non-standard forming tool is not only suitable for deep hole chamfering processing of specific cavity parts, but can also be extended to the processing of other similar parts. It has high practical value and application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] By reading the detailed description of the preferred embodiment below, the solutions and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only used to illustrate the preferred embodiment and are not to be considered as limiting the present invention.

[0026] In the attached figure:

[0027] Figure 1 This is a schematic diagram of the three-dimensional structure of a cavity-type workpiece;

[0028] Figure 2 This is a schematic diagram of the cross-sectional structure of a cavity-type workpiece;

[0029] Figure 3 This is a front view of a special adjustable reverse chamfering non-standard forming tool according to an embodiment of the utility model;

[0030] Figure 4This is a schematic diagram of the cross-sectional structure of a special adjustable reverse chamfering non-standard forming tool in a non-chamfering state according to an embodiment of the utility model;

[0031] Figure 5 This is a schematic diagram of the cross-sectional structure of a special adjustable reverse chamfering non-standard forming tool in the chamfering state according to an embodiment of the utility model;

[0032] Figure 6 for Figure 4 Enlarged view at point A in the middle;

[0033] Figure 7 for Figure 4 Enlarged view at point B in the middle;

[0034] Figure 8 for Figure 5 Enlarged view at center C;

[0035] Figure 9 for Figure 5 Enlarged view at point D in the middle;

[0036] Figure 10 This is a three-dimensional schematic diagram of a special adjustable reverse chamfering non-standard forming tool in use according to an embodiment of the utility model;

[0037] Figure 11 This is a cross-sectional schematic diagram of a special adjustable reverse chamfer non-standard forming tool in use according to an embodiment of the utility model;

[0038] Figure 12 for Figure 11 Enlarged view at E in the middle;

[0039] The components represented by the reference numerals in the figure are:

[0040] The utility model includes: 1. workpiece, 11. chamfering, 2. machine tool worktable, 3. shim, 4. tool handle, 5. tool rod, 51. threaded hole, 52. tool groove, 6. movable piston, 61. tapered groove, 7. shaft pin, 8. blade, 9. spring sheet, 10. adjusting screw. DETAILED DESCRIPTION

[0041] like Figures 3 to 9 As shown, the special adjustable reverse chamfering non-standard forming tool mainly includes a tool handle 4, a tool rod 5, a movable piston 6, a shaft pin 7, a blade 8 and a spring sheet 9 and other components.

[0042] The tool holder 4 is used to connect to the machine tool spindle to transmit torque and axial force.

[0043] One end of the arbor 5 is fixedly connected to the shank 4, and a rotatable blade 8 is installed inside the other end. The center of the arbor 5 is provided with a concentric piston hole and an axle pin hole for installing a mobile piston 6 and an axle pin 7.

[0044] The movable piston 6 is linearly slidably mounted in the piston hole, and one end thereof is fixedly connected to one end of the axle pin 7. A tapered groove 61 is left on the surface of the movable piston 6 for cooperating with the adjusting screw 10 to push the piston to move toward the blade 8.

[0045] Axis pin 7 can be installed linearly and slidably in axis pin hole, and is used to promote the rotation of blade 8. The end profile of axis pin 7 that cooperates with blade 8 is arranged to match with blade 8 profile, is 45 ° bevel in the present embodiment.

[0046] Blade 8 is hinged (rotatably) mounted at its center inside the other end of the shank 5, allowing it to rotate about its center. Blade 8 has a square cross-section. In its unchamfered state, two opposing faces and two other opposing faces are parallel and perpendicular, respectively, to the centerline of the shank 5. When blade 8 is rotated 45°, its cutting edge extends beyond the shank 5, creating a reverse pull.

[0047] A spring leaf 9 is fixed to the end of the shank 5 to limit accidental movement of the blade 8 in a non-chamfered state.

[0048] The special adjustable reverse chamfer non-standard forming tool further comprises a piston position adjustment device for adjusting the position of the movable piston 6 , thereby controlling the rotation of the blade 8 .

[0049] The adjustment device includes an adjusting screw 10, which is installed in a threaded hole 51 provided on the knife bar 5. The end of the adjusting screw 10 is provided with a conical head that matches the tapered groove 61 on the movable piston 6. By twisting the adjusting screw 10 up and down, the movable piston 6 can be pushed to move toward the blade 8.

[0050] like Figures 10 to 12 As shown, when the tool of this embodiment is used for processing, the workpiece 1 is fixedly mounted on the machine tool table 2 via the shim 3. First, the tool is sent to the process position where the deep hole inside the cavity part needs to be chamfered by the CNC boring and milling machine; then, the adjusting screw 10 is twisted downward, and the conical head at its end is pressed into the tapered groove 61 of the movable piston 6, pushing the movable piston 6 to move toward the blade 8; the movable piston 6 drives the shaft pin 7 to move, and the 45° inclined surface of the shaft pin 7 pushes the blade 8 to rotate 45°, so that the blade 8 extends out of the tool rod 5 and is pressed against the 45° tool groove 52 set on the tool rod 5; at this time, the blade 8 is in the reverse pull state, and the reverse pull chamfering process can begin. After the processing is completed, by twisting the adjusting screw 10 in the opposite direction, the spring leaf 9 restores the blade 8 to the non-chamfered state.

[0051] This special adjustable reverse chamfering non-standard forming tool uses a specially designed adjustable reverse chamfering non-standard forming tool to perform reverse chamfering on deeper holes inside cavity parts, which can ensure one-time processing and does not require manual processing by a fitter, thereby improving processing efficiency; the tool has a simple structure and is easy to use, and can be promoted for use in similar parts; the tool is used for processing on a CNC boring and milling machine, which improves processing accuracy and quality, and the processing quality pass rate reaches 100%; it solves the problems of low efficiency and unstable processing quality in traditional processing methods, and has broad application prospects and market value.

Claims

1. A special adjustable chamfering non-standard forming tool, characterized by: The present invention comprises a knife handle (4), a knife rod (5), a movable piston (6), an axle pin (7) and a blade (8), wherein one end of the knife rod (5) is fixedly connected to the knife handle (4), a rotatable blade (8) is installed inside the other end of the knife rod (5), a concentric piston hole and an axle pin hole are provided at the center of the knife rod (5), the movable piston (6) and the axle pin (7) are respectively installed in the piston hole and the axle pin hole in a linear sliding manner, one end of the movable piston (6) is fixedly connected to one end of the axle pin (7), a piston position adjustment device is provided at a position corresponding to the movable piston (6) on the knife rod (5), and a blade limiting elastic element is installed at the end of the knife rod (5) where the blade (8) is installed; In the non-chamfering state, the movable piston (6) is positioned in the direction toward the tool handle (4), and the blade (8) is in a state of not extending outside the tool rod (5) under the action of the blade limiting elastic element; When the non-chamfered state is changed to the chamfered state, the movable piston (6) is moved toward the blade (8) by the piston position adjustment device, and the shaft pin (7) moves under the drive of the movable piston (6), so that the shaft pin (7) pushes the blade (8) to rotate so that the blade (8) extends out of the knife rod (5).

2. A special adjustable reverse chamfering non-standard forming tool according to claim 1, characterized in that: The blade limiting elastic element is a spring sheet (9) fixed to the end of the blade rod (5).

3. A special adjustable reverse chamfering non-standard forming tool according to claim 1, characterized in that: A knife groove (52) is provided at a position on the knife rod (5) corresponding to the blade (8) for limiting the blade (8) from rotating further after the blade (8) has rotated into position.

4. A special adjustable reverse chamfering non-standard forming tool according to claim 1, characterized in that: The piston position adjustment device comprises an adjustment screw (10), a threaded hole (51) matching with the adjustment screw (10) is provided on the tool rod (5), a tapered groove (61) is provided on the movable piston (6), and a conical head matching with the tapered groove (61) is provided at the end of the adjustment screw (10).

5. The special adjustable reverse chamfering non-standard forming tool according to claim 3, characterized in that: The cross section of the blade (8) is square, and in a non-chamfered state, two opposing faces of the blade (8) and another two opposing faces are respectively parallel and perpendicular to the center line of the shank (5).

6. A special adjustable reverse chamfering non-standard forming tool according to claim 5, characterized in that: The blade groove (52) is restricted from further rotation after the blade (8) is rotated 45° from the non-chamfered state.

7. The special adjustable reverse chamfering non-standard forming tool according to claim 4, characterized in that: The adjusting screw (10) is a hexagon socket screw.

8. The special adjustable reverse chamfering non-standard forming tool according to claim 2, characterized in that: The spring sheet (9) is fixedly connected to the knife rod (5) via screws.

9. The special adjustable reverse chamfering non-standard forming tool according to claim 5, characterized in that: The shape of the end portion of the shaft pin (7) that cooperates with the blade (8) is configured to match the shape of the blade (8).

10. A special adjustable reverse chamfering non-standard forming tool according to claim 9, characterized in that: The end of the shaft pin (7) that cooperates with the blade (8) is set to form a 45° bevel.

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