Static ring batch processing method

Abstract

A method for batch machining stationary rings involves first pre-machining multiple strip-shaped blanks to obtain multiple pre-worked blanks. These pre-worked blanks are then clamped onto a ring-shaped fixture, and their b-sides and d-sides are milled simultaneously to obtain multiple arc-shaped blanks. Next, several pin holes, threaded countersunk holes, and external oil holes are sequentially milled onto individual arc-shaped blanks to obtain multiple blanks with holes. These blanks with holes are then fixed onto a boring fixture, and a sealing groove, an internal oil passage hole, a one-way valve mounting hole, an external arc hole, an oil hole, an oil passage hole, slots at both ends, a lifting hole, and a small hole on the end face are milled to complete the machining of a single stationary ring. Finally, multiple stationary rings are machined in the same manner to complete the batch machining of stationary rings. In application, this design, with multiple pre-worked blanks clamped onto the ring-shaped fixture and the b-sides and d-sides machined simultaneously, ensures consistency between the inner and outer arc surfaces of the pre-worked blanks and improves efficiency. Therefore, this invention not only achieves high machining accuracy but also high machining efficiency.

Description

Technical Field

[0001] This invention relates to a part processing method, belonging to the field of mechanical manufacturing, and particularly to a static ring batch processing method. Background Technology

[0002] The stationary ring is an important component of the servo motor. It works with the rotating ring to turn the servo. It has an inner and outer arc surface. The inner arc surface has a sealing groove, beveled sides, and three pin holes in the middle for hinge with the housing for stabilization and positioning. There are several bolt holes on the outer arc surface to install and fix the stationary ring. There are one-way valve holes and oil holes on the side, and lifting holes on the top end face. Stationary rings are usually used in combination. The combined inner and outer arc surfaces must be concentric. Therefore, its processing technology is highly demanding.

[0003] Application No. 202210001206.0, filed on January 4, 2020, discloses a method for assembling and processing a two-part thin-walled component (stationary blade). The assembly and processing method is as follows: assembling the two halves of the stationary blade onto a stationary ring; making pin holes on the circumference of the assembled stationary blade and the stationary ring; precision machining the countersunk surface, outer inclined surface, end face, and comb-tooth air seal groove of the assembled stationary blade and the stationary ring; measuring the accuracy of the processed stationary blade and the stationary ring to obtain qualified stationary blades and the stationary ring; drilling threaded holes on the qualified stationary ring; and removing burrs from the qualified stationary blade and the drilled stationary ring.

[0004] The following defects exist in its processing: due to the angular relationship between the two sides of the stationary ring, the sealing groove and the hole, it is necessary to frequently adjust and correct with the help of auxiliary tooling. Repeated adjustments cannot guarantee accuracy and also affect processing efficiency. Moreover, the inner and outer arc surfaces of the stationary ring need to be concentric after assembly, which makes it difficult to guarantee processing accuracy.

[0005] The information disclosed in this background section is intended only to enhance understanding of the overall background of this application and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to overcome the defects and problems of low processing accuracy and low processing efficiency in the existing technology, and to provide a static ring batch processing method with high processing accuracy and high processing efficiency.

[0007] To achieve the above objectives, the technical solution of the present invention is: a batch processing method for stationary rings, wherein the stationary ring is trapezoidal strip-shaped, with several sealing grooves on its top surface, several one-way valve mounting holes, outer arc holes, oil holes and oil passage holes on its two sides, and several pin holes, threaded countersunk holes and outer oil holes on its bottom surface; the processing method includes the following steps:

[0008] Step 1: First, pre-process the a and c surfaces of the strip blank until the included angle J1 between the a and c surfaces reaches the preset value. Then, pre-process the f and e surfaces of the strip blank, retaining the processing allowance to obtain the pre-processed blank. Finally, process multiple pre-processed blanks in the same way.

[0009] Step 2: Clip multiple pre-worked blanks onto the ring fixture. At this time, the f or e surface of the pre-worked blank is in contact with the ring fixture, and the center of the b surface of the pre-worked blank faces the axis of the ring fixture.

[0010] Step 3: Mill the b and d surfaces of multiple pre-worked blanks until the b and d surfaces of the pre-worked blanks meet the processing requirements to obtain multiple arc-shaped blanks.

[0011] Step 4: Sequentially machine several pin holes, threaded countersunk holes, and outer diameter oil holes on the d-side of multiple arc-shaped blanks to obtain multiple blanks with holes.

[0012] Step 5: Remove multiple perforated blanks from the annular fixture, and then install a single perforated blank onto the boring fixture. At this time, the d-side of the perforated blank is in contact with the boring fixture.

[0013] Step 6: First, precision mill the a and c surfaces of the blank with holes until the forming requirements are met; then, machine several sealing grooves on the b surface of the blank with holes, and machine oil passage holes in the sealing grooves to obtain the grooved blank.

[0014] Step 7: Adjust the grooved blank and machine the one-way valve mounting hole, outer arc hole, oil hole and oil passage hole on the a and c sides of the grooved blank respectively to obtain the oil hole blank.

[0015] Step 8: Mill grooves on both ends of the e-side and f-side of the oil hole blank; then mill the lifting hole and end face small hole on the e-side of the oil hole blank to complete the machining of a single stationary ring; finally, repeat steps 5 to 8 to process the single hole blanks in sequence until the batch machining of the stationary rings is completed.

[0016] In step one, the included angle J1 between surface a and surface c of the strip blank is 47°.

[0017] In step two, the step of clamping multiple pre-worked blanks onto the annular fixture includes any of the following methods:

[0018] The first type: The ring tooling is a lower ring tooling, and its top surface has multiple slots, the included angle J2 of the slots is the same as the included angle J1; the multiple pre-worked blanks are respectively engaged in the multiple slots;

[0019] The second type: The ring fixture includes an upper ring fixture and a lower ring fixture. The bottom surface of the upper ring fixture and the top surface of the lower ring fixture are provided with multiple slots. The included angle J2 of the slots is the same as the included angle J1. The upper ring fixture and the lower ring fixture clamp multiple pre-worked blanks and respectively clamp them into the multiple slots.

[0020] In step three, milling the b-side and d-side of multiple pre-worked blanks until the b-side and d-side of the pre-worked blanks meet the processing requirements means: first, milling the b-side of multiple pre-worked blanks simultaneously so that the b-sides of multiple pre-worked blanks are on the same circumference; then, milling the d-side of multiple pre-worked blanks simultaneously so that the d-sides of multiple pre-worked blanks are on the same circumference. The processing requirements are: cylindricity of the arc surface ≤ 0.05mm, coaxiality ≤ 0.05mm, and surface roughness ≤ Ra1.6.

[0021] In step four, the step of sequentially machining several pin holes, threaded countersunk holes and outer oil holes on the d-side of multiple arc-shaped blanks refers to: multiple arc-shaped blanks are evenly distributed on an annular fixture, machining several pin holes, threaded countersunk holes and outer oil holes on the d-side of one of the arc-shaped blanks, and then rotating the annular fixture to machine the next one, until multiple blanks with holes are obtained.

[0022] In step five, the boring fixture includes a base, a vertical plate, and a triangular plate. The vertical plate has a number of pin holes corresponding to a number of pin holes, and the vertical plate has a number of threaded holes corresponding to a number of threaded countersunk holes. A pin passes through the pin holes and pin holes, and a bolt passes through the threaded countersunk holes and threaded holes.

[0023] In step six, the precision milling of surface a and surface c of the blank with holes until the forming requirements are met means: using a CNC program to perform precision milling of surface a and surface c of the blank with holes until the processing requirements are met.

[0024] In step six, machining several sealing grooves on the b-side of the perforated blank and machining oil passage holes in the sealing grooves means: first, correcting the perforated blank so that the b-side of the perforated blank is perpendicular to the horizontal plane; then adjusting the machine tool axle angle so that the axis of one of the sealing grooves is on the same straight line as the machine tool axle; machining one of the sealing grooves and the oil passage holes in the groove; and then machining another sealing groove and the oil passage holes in the groove in the same way.

[0025] In step seven, adjusting the grooved blank means adjusting the a-side or c-side of the grooved blank to be parallel to the horizontal plane, so that the machine tool axle remains perpendicular to the a-side or c-side.

[0026] In step eight, before milling the lifting hole and end face hole on the e-side of the oil hole blank, a correction step is also included. The correction step is as follows: First, remove the oil hole blank from the boring tool, then place the f-side of the oil hole blank on a high-speed rail, correct the e-side of the oil hole blank to be perpendicular to the machine tool axle, and then mill the lifting hole and end face hole.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0028] 1. In the batch processing method of stationary rings of the present invention, multiple strip-shaped blanks are first pre-processed to obtain multiple pre-processed blanks. Then, the multiple pre-processed blanks are clamped onto a ring-shaped fixture, and the b-side and d-side of the multiple pre-processed blanks are milled simultaneously to obtain multiple arc-shaped blanks. Then, several pin holes, threaded countersunk holes, and outer circular oil holes on a single arc-shaped blank are milled sequentially to obtain multiple blanks with holes. Subsequently, the single blank with holes is fixed onto a boring fixture, and a sealing groove, an oil passage hole in the groove, a one-way valve mounting hole, an outer circular arc hole, an oil hole, an oil passage hole, slots at both ends, a lifting hole, and a small hole on the end face are milled to complete the processing of a single stationary ring. Finally, multiple stationary rings are processed in the same way to complete the batch processing of stationary rings. In the application of this design, multiple pre-processed blanks are used. The blank is clamped onto a ring-shaped fixture, and surfaces b and d are machined simultaneously, ensuring the consistency of the inner and outer arc surfaces of multiple pre-machined blanks. This not only guarantees machining accuracy but also ensures high efficiency. Subsequently, when machining the arc-shaped blank, the ring-shaped fixture is rotated to maintain the relative position of the machining tool and the arc-shaped blank. Then, the blank with holes is fixed to a boring fixture for machining. By adjusting the angle of the machine tool spindle, angled sealing grooves and oil passage holes within the grooves are machined, resulting in a grooved blank. Then, the a or c surface of the grooved blank is adjusted to be perpendicular to the machine tool spindle, and holes are machined on it. Finally, multiple stationary rings are machined in the same way to complete batch processing. This avoids the waste of tolerances and time caused by repeated adjustments and corrections, improving machining efficiency and accuracy. Therefore, this invention not only has high machining accuracy but also high machining efficiency.

[0029] 2. In a batch processing method for a stationary ring according to the present invention, multiple pre-worked blanks are clamped onto a ring-shaped fixture, including any of the following methods: First method: The ring-shaped fixture is a lower ring fixture, with multiple slots on its top surface, the included angle J2 of the slots being the same as the included angle J1; multiple pre-worked blanks are respectively clamped into the multiple slots; Second method: The ring fixture includes an upper ring fixture and a lower ring fixture, both the bottom surface of the upper ring fixture and the top surface of the lower ring fixture are provided with multiple slots, the included angle J2 of the slots being the same as the included angle J1; the ring fixture... Multiple pre-worked blanks are clamped by an upper and lower ring fixture, each engaging a specific slot. In application, the ring fixture uses either bottom or top-bottom clamping. Both the upper and lower ring fixtures have multiple slots with included angles J2 and J1. The pre-worked blanks are engaged in these slots, and the machining tool rotates around its axis to simultaneously machine the b-side or d-side of the pre-worked blanks. This ensures that the arc surfaces of the b-side or d-side of multiple pre-worked blanks lie on the same circumference, allowing for the simultaneous machining of multiple parts with minimal tolerances, thus guaranteeing high precision. Therefore, this invention offers both high machining efficiency and high machining accuracy.

[0030] 3. In the batch machining method for stationary rings of this invention, profile milling is used to complete the finish milling of surface a and surface c of the blank with holes using a single CNC program until the machining requirements are met. In this design, there is a certain included angle between surface a and surface c of the stationary ring, and the accuracy requirement is high. Therefore, profile milling is used, which can be completed by a single CNC program, ensuring machining accuracy. Thus, the machining accuracy of this invention is high. Attached Figure Description

[0031] Figure 1 This is the rear view of the stationary ring in this invention.

[0032] Figure 2 This is a side cross-sectional view of the stationary ring in this invention.

[0033] Figure 3 This is a schematic diagram of the structure of the strip-shaped blank in this invention.

[0034] Figure 4 This is a schematic diagram of the structure of the pre-worked blank in this invention.

[0035] Figure 5 This is a top view showing the relative positions of the pre-worked blank and the annular tooling in this invention.

[0036] Figure 6 This is a schematic diagram showing one of the relative positions of the pre-worked blank and the annular tooling in this invention.

[0037] Figure 7 This is a schematic diagram of the relative positions of the pre-worked blank and the annular tooling in this invention.

[0038] Figure 8 This is a schematic diagram of the perforated blank in this invention.

[0039] Figure 9 This is a schematic diagram showing the relative positions of the perforated blank and the boring tool in this invention.

[0040] Figure 10 This is a top view showing the relative positions of the perforated blank and the boring tool in this invention.

[0041] Figure 11 This is a cross-sectional view of the EE section of the stationary ring in this invention.

[0042] Figure 12 This is a cross-sectional view of the stationary ring at the CC position in this invention.

[0043] Figure 13 This is a cross-sectional view of the DD section of the stationary ring in this invention.

[0044] Figure 14 This is a cross-sectional view of the stationary ring at point BB in this invention.

[0045] Figure 15 This is a top view of the stationary ring in this invention.

[0046] Figure 16 This is a schematic diagram showing the relative position of the sealing groove and the machine tool axle in this invention.

[0047] Figure 17 This is a schematic diagram showing the relative position of surface a of the grooved blank and the machine tool axle in this invention.

[0048] Figure 18 This is a schematic diagram showing the relative position of the oil hole blank and the machine tool axle in this invention.

[0049] Figure 19 This is a schematic diagram of the structure of Embodiment 3 of the present invention.

[0050] In the diagram: 1. Strip blank; 2. Pre-worked blank; 3. Ring fixture; 31. Upper ring fixture; 32. Lower ring fixture; 33. Slot; 4. Arc blank; 41. Pin hole; 42. Threaded countersunk hole; 43. Outer circle oil hole; 5. Blank with hole; 51. Sealing groove; 52. Oil passage hole in groove; 53. One-way valve mounting hole; 54. Outer circle arc hole; 55. Oil hole; 56. Through hole; 6. Boring fixture; 61. Base; 62. Vertical plate; 63. Triangle plate; 64. Pin hole; 641. Threaded through hole; 65. Bolt; 651. Grooved blank; 7. Oil hole blank; 8. Slotted blank; 81. Lifting hole; 82. End face small hole; 83. Machine tool axle; 84. High-speed rail; 85. Stationary ring; 9. Detailed Implementation

[0051] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0052] See Figure 1 — Figure 18 A batch processing method for stationary rings, wherein the stationary ring 9 is trapezoidal strip-shaped, with several sealing grooves 51 on its top surface, several one-way valve mounting holes 53, outer arc holes 54, oil holes 55 and oil passage holes 56 respectively on both sides, and several pin holes 41, threaded countersunk holes 42 and outer oil holes 43 on its bottom surface; the processing method includes the following steps:

[0053] Step 1: First, pre-process the a and c surfaces of the strip blank 1 until the included angle J1 between the a and c surfaces reaches the preset value. Then, pre-process the f and e surfaces of the strip blank 1, retaining the processing allowance, to obtain the pre-processed blank 2. Finally, process multiple pre-processed blanks 2 in the same way.

[0054] Step 2: Clip multiple pre-worked blanks 2 onto the annular fixture 3. At this time, the f or e surface of the pre-worked blank 2 is in contact with the annular fixture 3, and the center of the b surface of the pre-worked blank 2 faces the axis of the annular fixture 3.

[0055] Step 3: Mill the b and d surfaces of multiple pre-worked blanks 2 until the b and d surfaces of the pre-worked blanks 2 meet the processing requirements to obtain multiple arc-shaped blanks 4.

[0056] Step 4: Sequentially machine several pin holes 41, threaded countersunk holes 42 and outer circle oil holes 43 on the d surface of multiple arc-shaped blanks 4 to obtain multiple blanks 5 with holes.

[0057] Step 5: Remove multiple perforated blanks 5 from the annular fixture 3, and then install a single perforated blank 5 onto the boring fixture 6. At this time, the d-surface of the perforated blank 5 is in contact with the boring fixture 6.

[0058] Step 6: First, mill the a and c surfaces of the blank 5 with holes until the forming requirements are met; then, machine several sealing grooves 51 on the b surface of the blank 5 with holes, and machine oil passage holes 52 in the sealing grooves 51 to obtain the grooved blank 7.

[0059] Step 7: Adjust the grooved blank 7, and machine the one-way valve mounting hole 53, the outer arc hole 54, the oil hole 55 and the oil passage hole 56 on the a and c sides of the grooved blank 7 respectively to obtain the oil hole blank 8.

[0060] Step 8: Mill grooves 81 on both ends of the e and f surfaces of the oil hole blank 8; then mill the lifting hole 82 and the end face small hole 83 on the e surface of the oil hole blank 8 to complete the machining of a single stationary ring 9; finally, repeat steps 5 to 8 to process the single hole blank 5 in turn until the batch machining of the stationary ring 9 is completed.

[0061] In step one, the included angle J1 between surface a and surface c of the strip blank 1 is 47°.

[0062] In step two, the process of attaching multiple pre-worked blanks 2 to the annular fixture 3 includes any of the following methods:

[0063] The first type: The annular tooling 3 is a lower ring tooling 32, which has multiple slots 33 on its top surface. The included angle J2 of the slots 33 is the same as the included angle J1. The multiple pre-worked blanks 2 are respectively engaged in the multiple slots 33.

[0064] The second type: The annular fixture 3 includes an upper ring fixture 31 and a lower ring fixture 32. The bottom surface of the upper ring fixture 31 and the top surface of the lower ring fixture 32 are provided with multiple slots 33. The included angle J2 of the slots 33 is the same as the included angle J1. The upper ring fixture 31 and the lower ring fixture 32 clamp multiple pre-worked blanks 2 and respectively engage them in the multiple slots 33.

[0065] In step three, milling the b and d surfaces of multiple pre-worked blanks 2 until the b and d surfaces of the pre-worked blanks 2 meet the processing requirements means: first, milling the b surfaces of multiple pre-worked blanks 2 simultaneously so that the b surfaces of multiple pre-worked blanks 2 are on the same circumference; then, milling the d surfaces of multiple pre-worked blanks 2 simultaneously so that the d surfaces of multiple pre-worked blanks 2 are on the same circumference. The processing requirements are: cylindricity of the arc surface ≤ 0.05mm, coaxiality ≤ 0.05mm, and surface roughness ≤ Ra1.6.

[0066] In step four, the step of sequentially machining several pin holes 41, threaded countersunk holes 42 and outer oil holes 43 on the d surface of multiple arc-shaped blanks 4 refers to: multiple arc-shaped blanks 4 are evenly distributed on the annular tooling 3, machining several pin holes 41, threaded countersunk holes 42 and outer oil holes 43 on the d surface of one of the arc-shaped blanks 4, and then rotating the annular tooling 3 to machine the next one, until multiple blanks 5 with holes are obtained.

[0067] In step five, the boring tool 6 includes a base 61, a vertical plate 62, and a triangular plate 63. The vertical plate 62 is provided with a plurality of pin holes 64 corresponding to a plurality of pin holes 41, and the vertical plate 62 is provided with a plurality of threaded holes 65 corresponding to a plurality of threaded countersunk holes 42. A pin 641 passes through the pin holes 41 and the pin holes 64, and a bolt 651 passes through the threaded countersunk holes 42 and the threaded holes 65.

[0068] In step six, the precision milling of surface a and surface c of the blank 5 with holes until the forming requirements are met means: using a CNC program to perform precision milling of surface a and surface c of the blank 5 with holes until the drawing processing requirements are met.

[0069] In step six, machining several sealing grooves 51 on the b-side of the perforated blank 5 and machining oil passage holes 52 in the sealing grooves 51 means: first, correcting the perforated blank 5 so that the b-side of the perforated blank 5 is perpendicular to the horizontal plane; then adjusting the angle of the machine tool axle 84 so that the axis of one of the sealing grooves 51 is on the same straight line as the machine tool axle 84; machining one of the sealing grooves 51 and the oil passage holes 52 in the groove; and then machining another sealing groove 51 and the oil passage holes 52 in the same way.

[0070] In step seven, adjusting the grooved blank 7 means adjusting the a-side or c-side of the grooved blank 7 to be parallel to the horizontal plane, so that the machine tool axle 84 remains perpendicular to the a-side or c-side.

[0071] In step eight, before milling the lifting hole 82 and the end face hole 83 on the e-side of the oil hole blank 8, a correction step is also included. The correction step is as follows: First, remove the oil hole blank 8 from the boring tool 6, then place the f-side of the oil hole blank 8 on the equal height rail 85, correct the e-side of the oil hole blank 8 to be perpendicular to the machine tool axle 84, and then mill the lifting hole 82 and the end face hole 83.

[0072] The principle of this invention is explained as follows:

[0073] The stationary ring 9 in this invention is usually used in combination of three or more. After combination, its inner and outer arc surfaces need to be kept concentric. Therefore, the tolerance accuracy between the stationary rings 9 is high, and a reasonable processing method is required to ensure this requirement.

[0074] Example 1:

[0075] See Figure 1 — Figure 18 A batch processing method for stationary rings, wherein the stationary ring 9 is trapezoidal strip-shaped, with several sealing grooves 51 on its top surface, several one-way valve mounting holes 53, outer arc holes 54, oil holes 55 and oil passage holes 56 respectively on both sides, and several pin holes 41, threaded countersunk holes 42 and outer oil holes 43 on its bottom surface; the processing method includes the following steps:

[0076] Step 1: First, pre-process the a-side and c-side of the strip blank 1 until the included angle J1 between the a-side and c-side reaches the preset value (preferably 47°). Then, pre-process the f-side and e-side of the strip blank 1, leaving a processing allowance (preferably 8mm) to obtain the pre-processed blank 2. Finally, process multiple pre-processed blanks 2 in the same way.

[0077] Step 2: Clip multiple pre-worked blanks 2 onto the annular fixture 3 (preferably, after clipping, spot weld the joint to fix it). At this time, the f or e surface of the pre-worked blank 2 is in contact with the annular fixture 3, and the center of the b surface of the pre-worked blank 2 faces the axis of the annular fixture 3.

[0078] Step 3: Mill the b and d surfaces of multiple pre-worked blanks 2 until the b and d surfaces of the pre-worked blanks 2 meet the processing requirements to obtain multiple arc-shaped blanks 4.

[0079] Step 4: Sequentially machine several pin holes 41, threaded countersunk holes 42 and outer circle oil holes 43 on the d surface of multiple arc-shaped blanks 4 to obtain multiple blanks 5 with holes.

[0080] Step 5: Remove multiple perforated blanks 5 from the annular fixture 3 (preferably, remove them after milling off the weld points described in Step 2), and then install a single perforated blank 5 onto the boring fixture 6. At this time, the d-surface of the perforated blank 5 is in contact with the boring fixture 6.

[0081] Step 6: First, mill the a and c surfaces of the blank 5 with holes until the forming requirements are met; then, machine several sealing grooves 51 on the b surface of the blank 5 with holes, and machine oil passage holes 52 in the sealing grooves 51 to obtain the grooved blank 7.

[0082] Step 7: Adjust the grooved blank 7, and machine the one-way valve mounting hole 53, the outer arc hole 54, the oil hole 55 and the oil passage hole 56 on the a and c sides of the grooved blank 7 respectively to obtain the oil hole blank 8.

[0083] Step 8: Mill grooves 81 on both ends of the e and f surfaces of the oil hole blank 8; then mill the lifting hole 82 and the end face small hole 83 on the e surface of the oil hole blank 8 to complete the machining of a single stationary ring 9; finally, repeat steps 5 to 8 to process the single hole blank 5 in turn until the batch machining of the stationary ring 9 is completed.

[0084] Example 2:

[0085] The basic content is the same as in Example 1, except that:

[0086] In step two, the process of attaching multiple pre-worked blanks 2 to the annular fixture 3 includes any of the following methods:

[0087] The first type: The annular tooling 3 is a lower ring tooling 32, which has multiple slots 33 on its top surface. The included angle J2 of the slots 33 is the same as the included angle J1. The multiple pre-worked blanks 2 are respectively engaged in the multiple slots 33.

[0088] The second type: The annular fixture 3 includes an upper ring fixture 31 and a lower ring fixture 32. The bottom surface of the upper ring fixture 31 and the top surface of the lower ring fixture 32 are provided with multiple slots 33. The included angle J2 of the slots 33 is the same as the included angle J1. The upper ring fixture 31 and the lower ring fixture 32 clamp multiple pre-worked blanks 2 and respectively engage them in the multiple slots 33.

[0089] Preferably, the shape of the slot 33 is consistent with the e-side or f-side of the pre-worked blank 2.

[0090] In application, after clamping, the ring fixture 3 needs to be calibrated. The ring fixture 3 is supported on the worktable by a high-speed rail 85. The outer circle of the ring fixture 3 is calibrated by dial indicator, and the circular runout is required to be ≤0.03mm. Then the end face of the ring fixture 3 is calibrated, and the flatness is required to be ≤0.03mm.

[0091] Example 3:

[0092] The basic content is the same as in Example 2, except that:

[0093] See Figure 19 In step three, milling the b-side and d-side of multiple pre-worked blanks 2 until the b-side and d-side of the pre-worked blanks 2 meet the processing requirements means: first, milling the b-side of multiple pre-worked blanks 2 simultaneously so that the b-side of multiple pre-worked blanks 2 is on the same circumference; then, milling the d-side of multiple pre-worked blanks 2 simultaneously so that the d-side of multiple pre-worked blanks 2 is on the same circumference. The processing requirements are: cylindricity of the arc surface ≤ 0.05mm, coaxiality ≤ 0.05mm, and surface roughness ≤ Ra1.6.

[0094] Preferably, the number of pre-work blanks 2 milled simultaneously is ≥2, and the included angles between the multiple pre-work blanks 2 are equal and they are evenly distributed within the 360° circumference of the annular fixture 3.

[0095] Example 4:

[0096] The basic content is the same as in Example 3, except that:

[0097] In step three, milling the b and d surfaces of multiple pre-worked blanks 2 until the b and d surfaces of the pre-worked blanks 2 meet the processing requirements means: first, milling the b surfaces of multiple pre-worked blanks 2 simultaneously so that the b surfaces of multiple pre-worked blanks 2 are on the same circumference; then, milling the d surfaces of multiple pre-worked blanks 2 simultaneously so that the d surfaces of multiple pre-worked blanks 2 are on the same circumference. The processing requirements are: cylindricity of the arc surface ≤ 0.05mm, coaxiality ≤ 0.05mm, and surface roughness ≤ Ra1.6.

[0098] Preferably, the number of pre-work blanks 2 milled simultaneously is 3, and the included angle between the 3 pre-work blanks 2 is 120°.

[0099] Example 5:

[0100] The basic content is the same as in Example 4, except that:

[0101] In step four, the step of sequentially machining several pin holes 41, threaded countersunk holes 42 and outer oil holes 43 on the d surface of multiple arc-shaped blanks 4 refers to: multiple arc-shaped blanks 4 are evenly distributed on the annular tooling 3, machining several pin holes 41, threaded countersunk holes 42 and outer oil holes 43 on the d surface of one of the arc-shaped blanks 4, and then rotating the annular tooling 3 to machine the next one, until multiple blanks 5 with holes are obtained.

[0102] In application, when milling three at the same time, the included angle between the three arc-shaped blanks 4 is 120°. After machining one arc-shaped blank 4, the ring fixture 3 is rotated 120° and then the next one is machined. This process is repeated, and the position of the machining tool remains unchanged to ensure that the precision of the machined arc-shaped blanks 4 is consistent.

[0103] Example 6:

[0104] The basic content is the same as in Example 5, except that:

[0105] Step 5: Remove multiple perforated blanks 5 from the annular fixture 3, and then install a single perforated blank 5 onto the boring fixture 6. At this time, the d-surface of the perforated blank 5 is in contact with the boring fixture 6.

[0106] Step 6: First, mill the a and c surfaces of the blank 5 with holes until the forming requirements are met; then, machine several sealing grooves 51 on the b surface of the blank 5 with holes, and machine oil passage holes 52 in the sealing grooves 51 to obtain the grooved blank 7.

[0107] Step 7: Adjust the grooved blank 7, and machine the one-way valve mounting hole 53, the outer arc hole 54, the oil hole 55 and the oil passage hole 56 on the a and c sides of the grooved blank 7 respectively to obtain the oil hole blank 8.

[0108] Step 8: Mill grooves 81 on both ends of the e and f surfaces of the oil hole blank 8; then mill the lifting hole 82 and the end face small hole 83 on the e surface of the oil hole blank 8 to complete the machining of a single stationary ring 9; finally, repeat steps 5 to 8 to process the single hole blank 5 in turn until the batch machining of the stationary ring 9 is completed.

[0109] The above description is only a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. Any equivalent modifications or changes made by those skilled in the art based on the content disclosed in the present invention should be included within the scope of protection set forth in the claims.

Claims

1. A method for batch processing of stationary rings, wherein the stationary ring (9) is trapezoidal strip-shaped, with several sealing grooves (51) on its top surface, several one-way valve mounting holes (53), outer arc holes (54), oil holes (55) and oil passage holes (56) respectively on both sides, and several pin holes (41), threaded countersunk holes (42) and outer oil holes (43) on its bottom surface; characterized in that, The processing method includes the following steps: Step 1: First, pre-process the a and c surfaces of the strip blank (1) until the included angle J1 between the a and c surfaces reaches the preset value. Then, pre-process the f and e surfaces of the strip blank (1), retain the processing allowance, and obtain the pre-processed blank (2). Finally, process multiple pre-processed blanks (2) in the same way. The included angle J1 between the a-plane and the c-plane of the strip blank (1) is 47°; Step 2: Clip multiple pre-worked blanks (2) onto the annular fixture (3). At this time, the f or e surface of the pre-worked blank (2) is in contact with the annular fixture (3), and the center of the b surface of the pre-worked blank (2) faces the axis of the annular fixture (3). The method of clamping multiple pre-worked blanks (2) onto the annular tooling (3) includes any of the following: The first type: the ring tool (3) is a lower ring tool (32), and its top surface is provided with multiple slots (33). The included angle J2 of the slots (33) is the same as the included angle J1; the multiple pre-worked blanks (2) are respectively engaged in the multiple slots (33); The second type: The ring tool (3) includes an upper ring tool (31) and a lower ring tool (32). The bottom surface of the upper ring tool (31) and the top surface of the lower ring tool (32) are provided with multiple slots (33). The included angle J2 of the slots (33) is the same as the included angle J1. The upper ring tool (31) and the lower ring tool (32) clamp multiple pre-worked blanks (2) and respectively clamp them into the multiple slots (33). The shape of the slot (33) is consistent with the e-side or f-side of the pre-worked blank (2); Step 3: Mill the b and d surfaces of multiple pre-worked blanks (2) until the b and d surfaces of the pre-worked blanks (2) meet the processing requirements to obtain multiple arc-shaped blanks (4). At the same time, the number of pre-work blanks 2 milled is ≥2, and the included angle between multiple pre-work blanks (2) is equal and they are evenly distributed in the 360° circumference of the annular fixture (3); Step 4: Sequentially machine several pin holes (41), threaded countersunk holes (42) and outer circle oil holes (43) on the d surface of multiple arc-shaped blanks (4) to obtain multiple blanks with holes (5). Step 5: Remove multiple perforated blanks (5) from the annular fixture (3), and then install a single perforated blank (5) onto the boring fixture (6). At this time, the d-side of the perforated blank (5) is in contact with the boring fixture (6). Step 6: First, mill the a and c surfaces of the blank with holes (5) until the forming requirements are met; then, process several sealing grooves (51) on the b surface of the blank with holes (5), and process oil passage holes (52) in the sealing grooves (51) to obtain the grooved blank (7). The process of machining several sealing grooves (51) on the b-side of the perforated blank (5) and machining oil passage holes (52) in the sealing grooves (51) refers to: first, correcting the perforated blank (5) so that the b-side of the perforated blank (5) is perpendicular to the horizontal plane; then, adjusting the angle of the machine tool axle (84) so ​​that the axis of one of the sealing grooves (51) is on the same straight line as the machine tool axle (84); machining one of the sealing grooves (51) and the oil passage holes (52) in the groove; and then machining another sealing groove (51) and the oil passage holes (52) in the groove in the same way. Step 7: Adjust the grooved blank (7), and machine the one-way valve mounting hole (53), outer arc hole (54), oil hole (55) and oil passage hole (56) on the a and c surfaces of the grooved blank (7) respectively to obtain the oil hole blank (8); Step 8: Mill grooves (81) on both ends of the e-side and f-side of the oil hole blank (8); then mill the lifting hole (82) and the end face small hole (83) on the e-side of the oil hole blank (8) to complete the machining of a single stationary ring (9); finally, repeat steps 5 to 8 to process a single hole blank (5) in sequence until the batch machining of the stationary ring (9) is completed.

2. The batch processing method for stationary rings according to claim 1, characterized in that: In step three, the milling of the b and d surfaces of multiple pre-worked blanks (2) until the b and d surfaces of the pre-worked blanks (2) meet the processing requirements means: first, milling the b surfaces of multiple pre-worked blanks (2) simultaneously so that the b surfaces of multiple pre-worked blanks (2) are on the same circumference; then, milling the d surfaces of multiple pre-worked blanks (2) simultaneously so that the d surfaces of multiple pre-worked blanks (2) are on the same circumference; the processing requirements are: cylindricity of the arc surface ≤ 0.05 mm, coaxiality ≤ 0.05 mm, and surface roughness ≤ Ra1.

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3. The batch processing method for stationary rings according to claim 1, characterized in that: In step four, the step of sequentially machining several pin holes (41), threaded countersunk holes (42) and outer oil holes (43) on the d surface of multiple arc-shaped blanks (4) means: multiple arc-shaped blanks (4) are evenly distributed on the annular tooling (3), and several pin holes (41), threaded countersunk holes (42) and outer oil holes (43) are machined on the d surface of one of the arc-shaped blanks (4), and then the annular tooling (3) is rotated to machine the next one until multiple blanks with holes (5) are obtained.

4. The batch processing method for stationary rings according to claim 1, characterized in that: In step five, the boring tool (6) includes a base (61), a vertical plate (62) and a triangular plate (63). The vertical plate (62) is provided with a plurality of pin holes (64) corresponding to a plurality of pin holes (41), and the vertical plate (62) is provided with a plurality of threaded holes (65) corresponding to a plurality of threaded countersunk holes (42). A pin (641) passes through the pin hole (41) and the pin hole (64), and a bolt (651) passes through the threaded countersunk hole (42) and the threaded hole (65).

5. The batch processing method for stationary rings according to claim 1, characterized in that: In step six, the precision milling of the a-side and c-side of the blank (5) with holes until the forming requirements are met means: using a CNC program to perform precision milling of the a-side and c-side of the blank (5) with holes until the processing requirements are met.

6. The batch processing method for stationary rings according to claim 1, characterized in that: In step seven, adjusting the grooved blank (7) means adjusting the a-side or c-side of the grooved blank (7) to be parallel to the horizontal plane, so that the machine tool axle (84) remains perpendicular to the a-side or c-side.

7. The batch processing method for stationary rings according to claim 1, characterized in that: In step eight, before milling the lifting hole (82) and the end face hole (83) on the e-side of the oil hole blank (8), a correction step is also included. The correction step is as follows: First, remove the oil hole blank (8) from the boring tool (6), then place the f-side of the oil hole blank (8) on the equal-speed rail (85), correct the e-side of the oil hole blank (8) to be perpendicular to the machine tool axle (84), and then mill the lifting hole (82) and the end face hole (83).

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