Method for machining a non-symmetrical rotary conical part with an angle of deviation

Abstract

The application relates to a machining method for an asymmetric rotary conical part with a deflection angle, and belongs to the technical field of machining; the method specifically comprises the following steps: step one, designing a taper handle clamping tool according to a deflection angle of a to-be-formed conical body; a blank comprises a taper handle and a conical body; the taper handle clamping tool is used to clamp the taper handle part of the blank; step two, completing the machining of the conical body through turning; step three, designing a conical body clamping tool; the turned blank is detached from the taper handle clamping tool, and the conical body is clamped by using the conical body clamping tool; step four, milling the taper handle part to complete the machining of the asymmetric rotary conical part. The machining method process of the application is universal for similar parts, and can shorten the cycle and reduce the cost.

Description

Technical Field

[0001] This invention belongs to the field of machining technology and relates to a method for machining asymmetric rotary conical parts with an offset angle. Background Technology

[0002] In actual production, we often encounter the problem of machining asymmetric rotary conical parts with deflection angles. Due to the deflection angle, it is difficult to machine these conical parts in one step using traditional turning methods. The deflection angle causes local features to form acute angle structures, which increases the difficulty of machining these features with cutting tools. After roughing, finishing results in a change in diameter, and the material is a high-temperature alloy, which leads to intermittent cutting and generates a large impact load. This places strict requirements on the selection of cutting tools and machining parameters. Summary of the Invention

[0003] The technical problem solved by this invention is to overcome the shortcomings of the prior art and propose a machining method for asymmetric rotary cone parts with deflection angle. This machining method has universality for similar parts and can achieve the effects of shortening the cycle and reducing costs.

[0004] The solution of the present invention is:

[0005] A method for machining an asymmetric rotary conical part with an offset angle includes the following steps:

[0006] Step 1: Design a cone shank clamping fixture based on the deflection angle of the cone to be formed; the blank includes a cone shank and a cone; use the cone shank clamping fixture to clamp the cone shank part of the blank.

[0007] Step 2: Complete the machining of the cone by turning;

[0008] Step 3: Design the cone clamping fixture; remove the machined blank from the cone shank clamping fixture and clamp the cone with the cone clamping fixture;

[0009] Step 4: Mill the cone shank to complete the machining of the asymmetric rotary cone part.

[0010] In the above-mentioned method for machining an asymmetric rotary cone part with an offset angle, in step one, the blank is a cylindrical structure; the blank is divided into two parts, a cone shank and a cone body, according to the outer surface; the cone shank and the cone body are coaxial integrated structures.

[0011] In the above-mentioned method for machining an asymmetric rotary cone part with an angle, the cone shank clamping fixture includes a first housing and a second retaining ring; wherein, both the first housing and the second retaining ring are cylindrical structures; the second retaining ring is disposed in the inner cavity of the first housing; the first housing is axially horizontal; the axis of the second retaining ring is assembled at an angle to the axis of the first housing; the angle is equal to the deflection angle of the cone to be formed.

[0012] In the above-mentioned method for machining an asymmetric rotary cone part with an angle of deflection, during assembly, the cone shank of the blank is inserted into the second clamping ring for clamping and fixing, so that the angle between the axis of the first housing and the axis of the cone of the blank is the deflection angle of the cone to be formed.

[0013] In the above-mentioned method for machining an asymmetric rotary cone part with an offset angle, an elongated positioning hole is provided on the side wall of the first housing and the second retaining ring. After the cone shank extends into the second retaining ring, it cooperates with the elongated positioning hole through the pin to achieve axial positioning of the blank.

[0014] In the above-mentioned method for machining an asymmetric rotary cone part with an offset angle, the first housing and the second retaining ring have corresponding through grooves on their side walls; after the cone shank extends into the second retaining ring, it achieves flexible clamping of the cone shank.

[0015] In the above-mentioned method for machining an asymmetric rotary cone part with a deflection angle, in step two, after the turning is completed, the axis of the cone is coaxial with the axis of the first housing, that is, the cone shank of the blank and the cone have formed an angle of deflection.

[0016] In the above-mentioned machining method for an asymmetric rotary cone part with an offset angle, an ISCAR 4mm cutting tool and a 35° reverse offset tool are used to turn the cone; the spindle speed Vc is 40-60m / min; and the depth of cut per cut is less than 0.5mm.

[0017] In the above-mentioned method for machining an asymmetric rotary cone part with an angle of deflection, the cone clamping fixture includes a second housing and a second retaining ring; wherein, both the second housing and the second retaining ring are cylindrical structures; the second retaining ring is disposed in the inner cavity of the second housing; the second housing is vertically oriented axially; the axis of the second retaining ring is assembled at an angle to the axis of the second housing; the angle is equal to the deflection angle of the cone to be formed.

[0018] In the above-mentioned method for machining an asymmetric rotary cone part with an offset angle, a cone hole is provided on the axis of the second clamping ring. The taper of the cone hole is adapted to the cone of the blank, and the cone of the blank is clamped and fixed by the second clamping ring; at this time, the cone shank of the blank is placed vertically.

[0019] The advantages of this invention compared to the prior art are:

[0020] (1) The present invention designs a clamping fixture for the cone shank based on the deflection angle and deflection direction of the cone; the fixture is machined with the same deflection angle and direction as the cone shank, and the deflection angle is eliminated by the circumferential clamping method.

[0021] (2) The present invention features an elongated positioning groove on the side wall of the tapered shank clamping fixture, and achieves axial positioning of the part through the engagement of a pin with the tapered shank. A slot is cut along the side wall of the fixture to achieve flexible clamping of the tapered shank;

[0022] (3) In the turning process of this invention, an ISCAR 4mm cutting tool and a 35° reverse offset tool are selected for turning the acute angle structure. The spindle speed is maintained at V by using the machine tool command G96 S50 LIMS=2000. c =40~60m / min, with a cutting depth of less than 0.5mm per cut, achieving precision and stability in processing;

[0023] (4) The processing method of the present invention is universally applicable to similar parts, and can achieve the effects of shortening the cycle and reducing costs. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the tapered shank clamping fixture of the present invention;

[0025] Figure 2 This is a schematic diagram of the tapered shank clamping fixture of the present invention clamping the blank.

[0026] Figure 3 This is a schematic diagram of the cone of the present invention after machining.

[0027] Figure 4 This is a schematic diagram of the cone clamping fixture of the present invention clamping a cone. Detailed Implementation

[0028] The present invention will be further described below with reference to the embodiments.

[0029] This invention provides a method for machining asymmetric rotary conical parts with an offset angle, which solves the problems of difficult turning of the offset structure, difficulty in machining the sharp angle structure of the part with the cutting tool, and poor stability of the machining process due to the high hardness and severe work hardening of high temperature alloy materials.

[0030] The machining method for asymmetric rotary conical parts with deflection angles includes the following steps:

[0031] Step 1: Design the cone shank clamping fixture based on the deflection angle of the cone to be formed. For example... Figure 1 The tapered shank clamping fixture includes a first housing 1 and a second retaining ring 2; wherein, both the first housing 1 and the second retaining ring 2 are cylindrical structures; the second retaining ring 2 is disposed in the inner cavity of the first housing 1; the first housing 1 is axially horizontal; the axis of the second retaining ring 2 is assembled at an angle to the axis of the first housing 1; the angle is equal to the deflection angle of the tapered body to be formed.

[0032] The blank consists of a shank and a cone. The blank has a cylindrical structure; it is divided into two parts, the shank and the cone, based on their outer surfaces; the shank and the cone are coaxial and integrated.

[0033] The tapered shank of the blank is clamped by a tooling clamp. For example... Figure 2As shown, during assembly, the cone shank of the blank is inserted into the second clamping ring 2 for clamping and fixing, so that the angle between the axis of the first housing 1 and the axis of the cone of the blank is the deflection angle of the cone to be formed.

[0034] like Figure 1 As shown, elongated positioning holes 5 are provided on the side walls of the first housing 1 and the second clamping ring 2. After the conical shank extends into the second clamping ring 2, it engages with the elongated positioning hole 5 through a pin to achieve axial positioning of the blank. Furthermore, corresponding through grooves 6 are provided on the side walls of the first housing 1 and the second clamping ring 2; after the conical shank extends into the second clamping ring 2, it achieves flexible clamping of the conical shank.

[0035] Step 2: Machining the cone by turning. Use an ISCAR 4mm cutting tool and a 35° reverse offset tool to turn the cone; the spindle speed Vc is 40-60m / min; the depth of cut per pass is less than 0.5mm.

[0036] After turning, the axis of the cone is coaxial with the axis of the first housing 1, that is, the cone shank of the blank and the cone have formed an angle of deflection, such as Figure 3 As shown.

[0037] Step 3: Design the cone clamping fixture. The cone clamping fixture includes a second housing 3 and a second retaining ring 4; wherein, both the second housing 3 and the second retaining ring 4 are cylindrical structures; the second retaining ring 4 is disposed in the inner cavity of the second housing 3; the second housing 3 is vertically oriented axially; the axis of the second retaining ring 4 is assembled at an angle to the axis of the second housing 3; the angle is equal to the deflection angle of the cone to be formed.

[0038] The machined blank is removed from the taper shank clamping fixture, and the taper is clamped using a taper clamping fixture. For example... Figure 4 As shown, the second clamping ring 4 has a tapered hole on its axis. The taper of the tapered hole is adapted to the cone of the blank. The cone of the blank is clamped and fixed by the second clamping ring 4. At this time, the cone shank of the blank is placed vertically.

[0039] Step 4: Mill the cone shank to complete the machining of the asymmetric rotary cone part.

[0040] The tapered shank clamping fixture of this invention is designed with a hole having a deflection angle. By fitting and clamping the tapered shank, the rotation centers of both can be aligned horizontally, thereby eliminating the tapered shank's deflection angle and enabling subsequent processing. The tapered shank clamping fixture has elongated holes on its side walls, which are locked with pins to achieve axial positioning of the tapered shank. The tapered shank clamping fixture also has openings cut into its side walls to achieve flexible clamping of the tapered shank.

[0041] Example

[0042] This method for machining asymmetric rotary conical parts with deflection angles primarily addresses the challenges of machining these parts using traditional turning methods. Specifically, it addresses the difficulty of machining the sharp angles inherent in the structure using cutting tools, and the high hardness and severe work hardening of high-temperature alloy materials, which negatively impacts machining stability. While the specific details of the deflection angle characteristics vary between different parts, the overall approach remains consistent. The method includes:

[0043] Step 1: Based on the angle and direction of the cone's deflection, design a clamping fixture that mates with the cone shank. (See attached image) Figure 1 The tooling shown is internally machined with the same deflection angle and angular direction as the taper shank, using a circumferential clamping method to eliminate deflection. A groove is machined on the end face of the tooling to fit the taper step, ensuring a tight fit with the taper part. An elongated positioning slot is cut on the side wall of the tooling, and the part is axially positioned by a pin engaging with the taper shank. An opening slot is cut in the side wall of the tooling to achieve flexible clamping of the taper shank.

[0044] Step two: Based on the machining method of the tooling-assisted clamping and the machining characteristics of the high-temperature alloy material, select a special alloy cutting tool to machine the material. Select an ISCAR 4mm cutting tool and a 35° reverse turning tool to machine the sharp-angled structural parts. On the machine tool, use the command G96 S50 LIMS=2000 to ensure the spindle speed is maintained at Vc=40~60m / min, and the depth of cut per pass is less than 0.5mm. (See attached...) Figure 2 A curved tip is installed at the end of the conical blank to provide a conformal support and ensure stability during turning.

[0045] Step 3: After turning, the remaining material with sharp angles is machined by a milling machine. A fixture is designed to mate with the conical surface to eliminate the angle deviation. (See attached image) Figure 3 As shown, position the cone shank vertically and use a ball cutter to remove the final excess material.

[0046] Based on the deflection angle and direction of the cone, this invention designs a clamping fixture for the cone shank. The fixture is internally machined with the same deflection angle and direction as the cone shank, and the deflection angle is eliminated by circumferential clamping.

[0047] This invention features an elongated positioning groove on the side wall of the tapered shank clamping fixture, allowing for axial positioning of the part via a pin engaging with the tapered shank. A slot is cut along the side wall of the fixture to provide flexible clamping of the tapered shank. During turning, an Iscar 4mm cutting tool and a 35° reverse offset tool are selected for turning the acute-angled sections. The machine tool is programmed with the command G96 S50 LIMS=2000 to maintain the spindle speed at V. c =40~60m / min, with a cutting depth of less than 0.5mm per cut, achieving precision and stability in processing;

[0048] The processing method of this invention is universally applicable to similar parts, and can achieve the effects of shortening the cycle and reducing costs.

[0049] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solutions of the present invention by utilizing the methods and techniques disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall fall within the protection scope of the technical solutions of the present invention.

Claims

1. A method for machining an asymmetric rotary cone part with an offset angle, characterized in that: Includes the following steps: Step 1: Design a cone shank clamping fixture based on the deflection angle of the cone to be formed; the blank includes a cone shank and a cone; use the cone shank clamping fixture to clamp the cone shank part of the blank. Step 2: Complete the machining of the cone by turning; Step 3: Design the cone clamping fixture; remove the machined blank from the cone shank clamping fixture and clamp the cone with the cone clamping fixture; Step 4: Mill the taper shank to complete the machining of the asymmetric rotary cone part; The tapered shank clamping fixture includes a first housing (1) and a first retaining ring (2); wherein, the first housing (1) and the first retaining ring (2) are both cylindrical structures; the first retaining ring (2) is disposed in the inner cavity of the first housing (1); the first housing (1) is axially horizontal; the axis of the first retaining ring (2) is assembled at an angle to the axis of the first housing (1); the angle is equal to the deflection angle of the cone to be formed; The cone clamping fixture includes a second housing (3) and a second retaining ring (4); wherein, the second housing (3) and the second retaining ring (4) are both cylindrical structures; the second retaining ring (4) is disposed in the inner cavity of the second housing (3); the second housing (3) is vertically oriented axially; the axis of the second retaining ring (4) is assembled at an angle to the axis of the second housing (3); the angle is equal to the deflection angle of the cone to be formed; During assembly, the cone shank of the blank is inserted into the first clamping ring (2) for clamping and fixing, so that the angle between the axis of the first housing (1) and the axis of the cone of the blank is the deflection angle of the cone to be formed; The second clamping ring (4) has a tapered hole on its axis. The taper of the tapered hole is adapted to the cone of the blank. The cone of the blank is clamped and fixed by the second clamping ring (4). At this time, the cone shank of the blank is placed vertically.

2. The method for machining an asymmetric rotary cone part with an offset angle according to claim 1, characterized in that: In step one, the blank is a cylindrical structure; the blank is divided into two parts, a cone shank and a cone body, according to its outer surface; the cone shank and the cone body are coaxial integrated structures.

3. The method for machining an asymmetric rotary cone part with an offset angle according to claim 1, characterized in that: The first housing (1) and the first retaining ring (2) are provided with elongated positioning holes (5). After the conical shank extends into the first retaining ring (2), it cooperates with the elongated positioning hole (5) through the pin to achieve axial positioning of the blank.

4. The method for machining an asymmetric rotary cone part with an offset angle according to claim 1, characterized in that: The first housing (1) and the first retaining ring (2) have corresponding through grooves (6) on their side walls; after the cone shank extends into the first retaining ring (2), it achieves flexible clamping of the cone shank.

5. The method for machining an asymmetric rotary cone part with an offset angle according to claim 1, characterized in that: In step two, after the turning is completed, the axis of the cone is coaxial with the axis of the first housing (1), that is, the cone shank of the blank and the cone have formed an angle of deflection.

6. A method for machining an asymmetric rotary cone part with an offset angle according to claim 5, characterized in that: The taper is machined using an ISCAR 4mm cutter and a 35° reverse offset cutter; the spindle speed Vc is 40-60m / min; and the depth of cut per cut is less than 0.5mm.

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