Gyroscope flexible joint circumferential through groove linear cutting machining method

Abstract

According to the linear cutting machining method for the circumferential through groove of the gyroscope flexible joint, a tool is placed on a workbench of linear cutting equipment, and a horizontal section of an L-shaped fixing base is pressed through a pressing plate; the flexible joint is sleeved on the circular truncated cone, a pin II penetrates through a pin hole II and then is inserted into any one neck hole at the outer end of the flexible joint, and the flexible joint is pressed at the outer end of the positioning seat through a flange, so that the inner end surface of the flexible joint is tightly attached to the outer end surface of the positioning seat; fourthly, the second pin is pulled out, the positioning block is detached, cutting of the area A is completed, the first pin is inserted into the second positioning hole after the positioning base is rotated anticlockwise by the angle of 90 + alpha for the first time, the positioning base and the L-shaped fixing base are fixed again, and a first through groove is formed after cutting of the area B is completed; and after the positioning seat is rotated by an angle alpha clockwise, the pin is inserted into the first positioning hole, and after cutting of the area C is completed, the positioning seat is rotated by an angle 90 + alpha anticlockwise, the pin is inserted into the second positioning hole, cutting of the area D is completed, and a second through groove is formed.

Description

Technical Field

[0002] The invention belongs to the technical field of processing special-shaped parts, and in particular relates to a method for processing a circumferential through groove of a gyroscope flexible joint by wire cutting. Background Art

[0004] The flexible joint is a frictionless elastic support, mainly used to support the joint rotor of the flexible gyroscope. The joint rotor is connected to the drive shaft with the help of a flexible joint. On the one hand, it transmits the torque of the drive motor to drive the rotor to lock around the rotation axis at high speed, and on the other hand, it allows the rotor to rotate around two orthogonal axes perpendicular to the rotation axis. Figure 5 The flexible joint has the characteristics of small size, complex structure and high processing precision. Among them, the two through grooves with irregular structure and cross-staggered positions in the circumference of the flexible joint need to be processed by wire cutting, which cannot be completed by existing wire cutting equipment. Summary of the invention

[0006] The present invention provides a method for processing a circumferential through groove of a gyroscope flexible joint by wire cutting, so as to overcome the shortcomings of the prior art.

[0007] The technical solution adopted by the present invention is: a method for wire cutting a circumferential through groove of a gyroscope flexible joint,

[0008] The first step is to make a tooling, which includes an L-shaped fixing seat and a positioning seat. The positioning seat is composed of a coaxially arranged external thread section, a cylindrical positioning section, and a cylindrical positioning platform. The cylindrical positioning section is evenly distributed with two pairs of positioning holes one and two pairs of positioning holes two along the radial direction, and the axis of the positioning hole one and the axis of the positioning hole two are arranged crosswise at an angle α; the outer end of the cylindrical positioning platform has a truncated table coaxially at the center, and the outer circumference of the cylindrical positioning platform has a positioning surface, and the positioning surface is parallel or perpendicular to the axis of any one positioning hole one; a detachable positioning block is arranged on the positioning surface, and a pin hole two is vertically arranged at the outer end of the positioning block;

[0009] The vertical section of the L-shaped fixing seat is provided with a mounting hole horizontally and a pin hole 1 vertically, and the pin hole 1 passes through the top of the vertical section and the mounting hole;

[0010] The cylindrical positioning section is inserted into the mounting hole, the pin one passes through the pin hole one and is inserted into the positioning hole one, the external thread section passes through the vertical section and is threadedly connected with the fastening nut, thereby fixing the positioning seat and the L-shaped fixing seat together;

[0011] The second step is to place the tooling on the workbench of the wire cutting equipment and press the horizontal section of the L-shaped fixing seat with a pressing plate;

[0012] The third step is to put one end of the flexible joint with the flange edge on the round table, insert the second pin through the second pin hole and then insert it into one of the neck holes on the flexible joint away from the flange edge to complete the indexing positioning of the flexible joint, and then press the flexible joint onto the outer end of the positioning seat by putting the flange fixed on the cylindrical positioning table on the outer side of the flange edge, so that the inner end face of the flexible joint is in close contact with the outer end face of the positioning seat;

[0013] Step 4: Pull out the second pin and remove the positioning block from the positioning surface;

[0014] Step 5. Adjust the workbench of the wire cutting equipment to the cutting position, pass the wire cutting wire through the process hole of the first through slot to be cut, and cut the A area. After the A area is cut, pull out the pin 1, loosen the fastening nut, and rotate the positioning seat counterclockwise for the first time by 90º+α angle, then pass the pin 1 through the pin hole 1 and insert it into the positioning hole 2, tighten the fastening nut again to fix the positioning seat and the L-shaped fixing seat together, and then cut the B area. After the B area is cut, the first through slot is formed;

[0015] Step 6. After the first through slot is cut, take out the wire cutting wire, then pull out the pin 1, loosen the fastening nut, rotate the positioning seat clockwise by an angle of α, then pass the pin 1 through the pin hole 1 and insert it into the positioning hole 1, tighten the fastening nut again to fix the positioning seat and the L-shaped fixing seat together, pass the wire cutting wire through the process hole of the second through slot to be cut, and perform C area cutting. After the C area is cut, pull out the pin 1, loosen the fastening nut, rotate the positioning seat counterclockwise by an angle of 90º+α, then pass the pin 1 through the pin hole 1 and insert it into the positioning hole 2, tighten the fastening nut again to fix the positioning seat and the L-shaped fixing seat, and perform D area cutting. After the D area is cut, the second through slot is formed.

[0016] The angle α is 22.7°.

[0017] The outer end of the cylindrical positioning platform has a coaxial cylinder in the center, and the outer periphery of the cylinder has an annular groove, and the truncated platform is coaxially located in the center of the end face of the cylinder; the flange is sunk in the annular groove and fixedly connected to the cylindrical positioning platform by bolts.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention designs a special tool to position the flexible joint through a positioning seat and realizes the wire cutting processing of two through grooves with irregular circumferential structure and cross-staggered positions of the flexible joint by rotating the positioning seat. The invention has a simple structure and is easy to operate, which not only ensures product quality, but also reduces processing difficulty and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a schematic cross-sectional view of the structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the positioning seat of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the flexible joint of the present invention;

[0025] Figure 5 It is a schematic diagram of the development of the flexible joint structure of the present invention;

[0026] Figure 6 It is a schematic diagram of the first cutting position (A region) of the first through groove of the present invention;

[0027] Figure 7 It is a schematic diagram of the second cutting position (area B) of the first through groove of the present invention;

[0028] Figure 8 It is a schematic diagram of the first cutting position (area C) of the second through groove of the present invention;

[0029] Fig. 9 It is a schematic diagram of the second cutting position (area D) of the second through groove of the present invention. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-9 The present invention is described in detail with specific embodiments.

[0032] A method for machining a circumferential through groove of a gyroscope flexible joint by wire cutting comprises the following steps:

[0033] The first step is to make a tool, which includes an L-shaped fixing seat 1 and a positioning seat 2. The positioning seat 2 is composed of a coaxially arranged external threaded section 2-3, a cylindrical positioning section 2-2, and a cylindrical positioning platform 2-1. The cylindrical positioning section 2-2 is evenly distributed with two pairs of positioning holes 2-2-1 and two pairs of positioning holes 2-2-2 in the radial direction, and the axis of the positioning hole 2-2-1 and the axis of the positioning hole 2-2-2 are arranged in a cross-arrangement at an angle α; the cylindrical positioning platform 2-1 has a truncated table 2-4 coaxially at the center of the outer end, and a positioning surface 2-5 is provided on the outer periphery of the cylindrical positioning platform 2-1, and the positioning surface 2-5 is parallel or perpendicular to the axis of any one of the positioning holes 2-2-1; a detachable positioning block 3 is provided on the positioning surface 2-5, and a pin hole 2 3-1 is vertically provided at the outer end of the positioning block 3;

[0034] The vertical section of the L-shaped fixing seat 1 is provided with a mounting hole 1-1 horizontally and a pin hole 1-2 vertically, and the pin hole 1-2 passes through the top of the vertical section and the mounting hole 1-1;

[0035] The cylindrical positioning section 2-2 is inserted into the mounting hole 1-1, the pin 4 passes through the pin hole 1-2 and is inserted into the positioning hole 2-2-1, the external thread section 2-3 passes through the vertical section and is threadedly connected with the fastening nut 5, fixing the positioning seat 2 and the L-shaped fixing seat 1 together;

[0036] The second step is to place the tooling on the workbench of the wire cutting equipment and press the horizontal section of the L-shaped fixing seat 1 with a pressing plate;

[0037] The third step is to fit one end of the flexible joint 6 with the flange edge onto the truncated table 2-4, insert the second pin 8 through the second pin hole 3-1 and then insert it into one of the neck holes 6-3 on the flexible joint 6 away from the flange edge, so as to complete the indexing positioning of the flexible joint 6, and then fit the flange 7 fixed on the cylindrical positioning table 2-1 onto the outer side of the flange edge to press the flexible joint 6 onto the outer end of the positioning seat 2, so that the inner end surface of the flexible joint 6 is in close contact with the outer end surface of the positioning seat 2;

[0038] Step 4: Pull out the second pin 8 and remove the positioning block 3 from the positioning surface 2-5;

[0039] Step 5: Adjust the workbench of the wire cutting equipment to the cutting position, pass the wire cutting wire through the process hole of the first through groove 6-1 to be cut, and cut the A area ( Figure 6 As shown), after the cutting of area A is completed, pull out the pin 14, loosen the fastening nut 5, and rotate the positioning seat 2 counterclockwise for the first time by 90º+α angle, then insert the pin 14 through the pin hole 1-2 and insert it into the positioning hole 2-2-2, tighten the fastening nut 5 again to fix the positioning seat 2 and the L-shaped fixing seat 1 together, and then proceed to area B ( Figure 7 After the cutting of area B is completed, the first through groove 6-1 is formed;

[0040] Step 6. After the first through slot 6-1 is cut, take out the wire cutting wire, then pull out the pin 4, loosen the fastening nut 5, rotate the positioning seat 2 clockwise by an angle of α, and then insert the pin 4 through the pin hole 1-2 and insert it into the positioning hole 2-2-1. Tighten the fastening nut 5 again to fix the positioning seat 2 and the L-shaped fixing seat 1 together, and pass the wire cutting wire through the process hole of the second through slot 6-2 to be cut, and proceed to the C area ( Figure 8After the C area is cut, pull out the pin 1-4 and loosen the fastening nut 5. After the positioning seat 2 is rotated counterclockwise by 90°+α, insert the pin 1-4 through the pin hole 1-2 and insert it into the positioning hole 2-2-2. Tighten the fastening nut 5 again to fix the positioning seat 2 and the L-shaped fixing seat 1. Then, proceed to the D area ( Fig. 9 After the cutting of the D area is completed, a second through groove 6-2 is formed.

[0041] In this embodiment, the angle α is 22.7°. It should be noted that the specific value of the angle α is determined according to the position and structure of the through slot on the flexible joint 6 to be processed, and the positioning seat 2 can be rotated according to the angle α to completely cover the remaining area after the first cutting.

[0042] In this embodiment, in order to prevent the flange 7 from interfering with the wire cutting wire, the cylindrical positioning platform 2-1 has a cylinder 2-6 coaxially in the center of the outer end, and the outer periphery of the cylinder 2-6 has an annular groove 2-7, and the table 2-4 is coaxially located in the center of the end face of the cylinder 2-6; the flange 7 is sunk in the annular groove 2-7 and fixedly connected to the cylindrical positioning platform 2-1 by bolts.

[0043] In this embodiment, the positioning block 3 is detachably connected to the positioning surface 2-5 by two pins. In this embodiment, the pin 1 4 and the pin 2 8 are both shoulder pins to prevent the pins from sliding into the interior of the parts and becoming ineffective.

[0044] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, all equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A method for machining a circumferential through groove of a gyroscope flexible joint by wire cutting, characterized in that: The first step is to manufacture a tool, the tool comprising an L-shaped fixing seat (1) and a positioning seat (2), the positioning seat (2) being composed of a coaxially arranged external thread section (2-3), a cylindrical positioning section (2-2), and a cylindrical positioning platform (2-1), the cylindrical positioning section (2-2) being uniformly distributed along the radial direction with two pairs of positioning holes one (2-2-1) and two pairs of positioning holes two (2-2-2), and the axis of the positioning hole one (2-2-1) and the axis of the positioning hole two (2-2-2) being arranged crosswise at an angle α; the cylindrical positioning platform (2-1) having a truncated table (2-4) coaxially at the center of the outer end, the cylindrical positioning platform (2-1) having a positioning surface (2-5) on the outer periphery, and the positioning surface (2-5) being parallel or perpendicular to the axis of any one of the positioning holes one (2-2-1); the positioning surface (2-5) being provided with a detachable positioning block (3), and the outer end of the positioning block (3) being vertically provided with a pin hole two (3-1); The vertical section of the L-shaped fixing seat (1) is provided with a mounting hole (1-1) horizontally and a pin hole (1-2) vertically, and the pin hole (1-2) passes through the top of the vertical section and the mounting hole (1-1); The cylindrical positioning section (2-2) is inserted into the mounting hole (1-1), the pin one (4) passes through the pin hole one (1-2) and is then inserted into the positioning hole one (2-2-1), the external thread section (2-3) passes through the vertical section and is threadedly connected to the fastening nut (5), thereby fixing the positioning seat (2) and the L-shaped fixing seat (1) together; The second step is to place the tooling on a workbench of the wire cutting equipment and to press the horizontal section of the L-shaped fixing seat (1) with a pressing plate; The third step is to fit one end of the flexible joint (6) with the flange edge onto the truncated table (2-4), insert the second pin (8) through the second pin hole (3-1) and then insert it into one of the neck holes (6-3) on the flexible joint (6) away from the flange edge, thereby completing the indexing positioning of the flexible joint (6), and then, by fitting the flange (7) fixed on the cylindrical positioning table (2-1) onto the outer side of the flange edge, press-fit the flexible joint (6) onto the outer end of the positioning seat (2), so that the inner end surface of the flexible joint (6) is in close contact with the outer end surface of the positioning seat (2); Step 4: Pull out the second pin (8) and remove the positioning block (3) from the positioning surface (2-5); Step 5: adjust the worktable of the wire cutting equipment to the cutting position, pass the wire cutting wire through the process hole of the first through groove (6-1) to be cut, and cut the A area. After the A area is cut, pull out the pin 1 (4), loosen the fastening nut (5), and rotate the positioning seat (2) counterclockwise for the first time by 90º+α angle, then pass the pin 1 (4) through the pin hole 1 (1-2) and insert it into the positioning hole 2 (2-2-2), tighten the fastening nut (5) again to fix the positioning seat (2) and the L-shaped fixing seat (1) together, and then cut the B area. After the B area is cut, the first through groove (6-1) is formed. Step 6. After the first through groove (6-1) is cut, the wire is removed, the pin 1 (4) is pulled out, the fastening nut (5) is loosened, the positioning seat (2) is rotated clockwise by an angle α, the pin 1 (4) is passed through the pin hole 1 (1-2) and then inserted into the positioning hole 1 (2-2-1), the fastening nut (5) is tightened again to fix the positioning seat (2) and the L-shaped fixing seat (1) together, and the wire is removed from the working side of the second through groove (6-2) to be cut. After the C area is cut, the pin 1 (4) is pulled out and the fastening nut (5) is loosened. The positioning seat (2) is rotated counterclockwise by 90°+α. The pin 1 (4) is then passed through the pin hole 1 (1-2) and inserted into the positioning hole 2 (2-2-2). The fastening nut (5) is tightened again to fix the positioning seat (2) and the L-shaped fixing seat (1). The D area is cut. After the D area is cut, a second through groove (6-2) is formed.

2. The method for machining the circumferential through groove of the gyroscope flexible joint according to claim 1, characterized in that: The angle α is 22.7°.

3. The method for machining the circumferential through groove of the gyroscope flexible joint according to claim 1, characterized in that: The cylindrical positioning platform (2-1) has a cylinder (2-6) coaxially at the center of the outer end, and the outer periphery of the cylinder (2-6) has an annular groove (2-7); the truncated platform (2-4) is coaxially located at the center of the end face of the cylinder (2-6); the flange (7) is sunk in the annular groove (2-7) and is fixedly connected to the cylindrical positioning platform (2-1) by bolts.

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