CN112091340A - Machining method and clamp for split spring - Google Patents
Machining method and clamp for split spring Download PDFInfo
- Publication number
- CN112091340A CN112091340A CN202010961075.1A CN202010961075A CN112091340A CN 112091340 A CN112091340 A CN 112091340A CN 202010961075 A CN202010961075 A CN 202010961075A CN 112091340 A CN112091340 A CN 112091340A
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- spring
- positioning
- slicing
- face
- base
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H7/00—Processes or apparatus applicable to both electrical discharge machining and electrochemical machining
- B23H7/02—Wire-cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H11/00—Auxiliary apparatus or details, not otherwise provided for
Abstract
The invention discloses a machining method and a fixture for a slicing spring. When the slot is machined, the positioning pin is simultaneously inserted into the pressing plate pin hole, the rotating shaft positioning hole and the positioning pin hole in the base for accurate positioning, then the supporting end surfaces of the pressing plate, the slicing spring and the rotating shaft are locked, the slot of the slicing spring is cut in a linear cutting mode, after one part (2 slots are machined at one time), the pressing plate and one pin hole position of the rotating shaft are rotated clockwise or anticlockwise to position and cut the next slot, and all slots are machined in sequence. The invention improves the part processing qualification rate and reduces the processing cost.
Description
Technical Field
The invention belongs to the technical field of machining, and particularly relates to a machining method of a segmented spring and a clamp used in the machining method.
Background
As shown in fig. 1 and 2, a split spring used in an aircraft engine has a conical structure with a flanged edge, and a small end of the conical structure has a split structure and is divided into 32 pieces on average. Because the part size is small and belongs to thin-wall sheet metal parts, the part size becomes a processing difficulty when the slot at the position 32 is processed and the part is sliced; the total height of the part is 4.6mm, the depth of the slicing slot is 3.5mm, so that the clamping amount of the part is only 1.1mm during processing, and another processing difficulty of clamping the part and finishing the processing and forming of the part into the part is realized. At present, the part is processed by laser cutting, but the processing method and the clamping limit of the part, so that the part processing yield is low, the processing period is long, and the processing cost is high.
Disclosure of Invention
The invention aims to provide a clamping fixture and a machining method for a thin-wall sheet metal segmented spring, which solve the problems of difficult machining of similar parts and the like, improve the machining qualified rate of the parts and reduce the machining cost.
The technical scheme adopted by the invention is as follows:
a processing clamp for a slicing spring comprises,
the wire cutting machine comprises a base, a pair of positioning pin holes and a pair of positioning pin holes, wherein the base is detachably connected with a fixing frame of the wire cutting machine;
the rotating shaft comprises a bearing end face and a shaft section, the bearing end face is used for supporting the bottom end of the flange edge of the slicing spring, the shaft section is matched with the through hole in the base, a plurality of positioning holes are formed in the bearing end face and distributed at intervals along the same circumference, and the number of the positioning holes is consistent with the number of gaps of the slicing spring;
the pressing plate is a ring-shaped piece, the inner diameter of the inner ring of the ring-shaped piece is smaller than the outer diameter of the flange edge of the segmented spring, a plurality of pin holes distributed at intervals along the same circumference are formed in the ring-shaped piece, the number of the pin holes is consistent with the number of the slots of the segmented spring, and the diameters of the circumferences of the pin holes and the positioning holes are equal;
and the positioning pin is matched with the positioning pin hole, the positioning hole and the pin hole at the same time.
Further, still include one section and the coaxial location shaft part of shaft part between the shaft part of rotation axis and the supporting end face, the external diameter of location shaft part is greater than the external diameter of shaft part, and the terminal surface of shaft part has the external screw thread for processing, and the shaft part passes through the external screw thread and is connected with the second nut.
Furthermore, the surface of the pressing plate is connected with a screw rod, a hole matched with the screw rod is formed in the supporting end face of the rotating shaft, and the screw rod is connected with the first nut after penetrating through the hole.
Furthermore, the screw rods are at least two and are distributed on the circumference coaxial with the pressure plate at equal intervals.
Furthermore, a connecting line of the pair of positioning pin holes on the base is positioned on a radial line of the through hole.
Further, the number of the positioning pins is two.
Furthermore, a positioning groove is formed in the supporting end face of the rotating shaft, and the outer diameter of the positioning groove is equal to the outer diameter of the flange edge of the slicing spring.
A method for processing a slicing spring comprises the step of processing a slot of the slicing spring, wherein a linear cutting mode is adopted, a cutting wire is positioned in a plane determined by the axial direction and the radial direction of the slicing spring, and two slots positioned on the same radial line of the slicing spring are cut at one time.
A processing method adopting the processing clamp for the slicing spring comprises the following steps:
fixing a base on a fixing frame of a wire cutting machine tool, and adjusting the direction of the base to enable the base to be vertically downward;
placing the slicing spring on the supporting end face of the rotating shaft, and positioning through a positioning groove on the supporting end face;
pressing the slicing spring by using a pressing plate, positioning by using a positioning pin, and then fixedly connecting the pressing plate with the supporting end face of the rotating shaft;
and step four, linearly cutting the slot of the slicing spring, processing two slots positioned on the radial direction of the slicing spring at one time, positioning by rotating the pressing plate by one pin hole position clockwise or anticlockwise after one slot is processed, cutting the next slot, and sequentially processing along the same direction until all slots are processed.
Compared with the existing processing method and device, the invention has the advantages that:
1. the processing difficulties that parts similar to the split spring are difficult to process, the size of the parts is difficult to guarantee, the processing period is long and the like are solved.
2. High efficiency, low labor intensity, stable part processing quality and improved part processing qualification rate.
3. At present, the processing method and the processing clamp are used on site and meet the purpose requirements.
Drawings
FIG. 1 is a schematic detail view of a leaf spring;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a jig assembly;
FIG. 4 is an axial cross-sectional view of the clip after assembly of the segmented spring;
fig. 5 is an exploded view of the clip assembly.
Detailed Description
The technical solution of the present invention is further explained below with reference to the accompanying drawings, but the claimed protection scope is not limited to the above.
In this embodiment, the split spring 7 is processed according to the following idea:
1) the processing method comprises the following steps: the existing laser processing is changed into linear cutting processing of the slot, and the slot at 2 positions is processed at one time, so that the processing quality of the slot of the part is ensured, and the processing period is shortened.
2) Designing a clamp: according to the size and the appearance structure of the slicing spring 7, a special cutting clamp is designed for positioning and clamping the parts.
3) Cutting part slot separation through a special clamp; the indexing is carried out through the clamp positioning holes, and the uniform distribution and the size of the part slicing are guaranteed.
As shown in fig. 3 to 5, a machining fixture for a slicing spring comprises a pressing plate 1, a pair of positioning pins 2, a rotating shaft 3 and a base 5, wherein the base 5 is detachably connected with a fixing frame of a wire cutting machine, a through hole is formed in the base 5, a pair of positioning pin holes are further formed in the surface of the base 5, and a connecting line of the pair of positioning pin holes is located on a radial line of the through hole. The rotating shaft 3 comprises a bearing end face (namely the left end face of a disc structure in fig. 4) for supporting the bottom end of the flange edge of the segmented spring 7, and a shaft section matched with the upper through hole of the base 5, 32 positioning holes distributed along the same circumference at intervals are formed in the bearing end face, the number of the positioning holes is consistent with the number of the slots of the segmented spring 7, a positioning groove is formed in the bearing end face of the rotating shaft 3, the outer diameter of the positioning groove is equal to the outer diameter of the flange edge of the segmented spring 7, a positioning shaft section coaxial with the shaft section is further arranged between the shaft section of the rotating shaft 3 and the bearing end face, the outer diameter of the positioning shaft section is larger than that of the shaft section, an external thread is formed on the end surface of the shaft section, and the shaft section. Clamp plate 1 is the annular member that an inner ring internal diameter is less than 7 flange limit external diameters of burst spring, set up a plurality of pinholes along same circumference interval distribution on the annular member, the quantity of pinhole is unanimous with 7 slot quantities of burst spring, be 32, and 32 pinhole place circumferences are equal with locating hole place circumference diameter, clamp plate 1's surface still is connected with the screw rod (as shown in fig. 4 clamp plate 1's right-hand member surface), offer on the supporting end face of rotation axis 3 be used for with screw rod complex hole, the screw rod passes the hole after and is connected with first nut 4. The screw rods are four and are distributed on the circumference which is coaxial with the pressure plate 1 at equal intervals. The pair of positioning pins 2 are simultaneously fitted with the positioning pin holes, the positioning holes, and the pin holes.
The machining of the split spring 7 by using the clamp is implemented according to the following steps:
(1) designing and processing a positioning clamp according to the structure and the size (as shown in figures 1 and 2) of the slicing spring 7, as shown in figures 3-5;
(2) fixing a clamp base 5 on a fixing frame of the linear cutting machine, adjusting the direction of the base 5 to enable the base to be vertically downward, inserting a shaft section of a rotating shaft 3 into a through hole of the base 5, and fixing the shaft section through a second nut 6;
(3) the slicing spring 7 is placed on the supporting end face of the rotating shaft 3 and is positioned through a positioning groove on the supporting end face;
(4) pressing the slicing spring 7 by using the pressing plate 1 to ensure that the pin holes on the pressing plate 1 correspond to the positioning holes on the rotating shaft 3 one by one, simultaneously inserting the positioning pins 2 into the pin holes, the positioning holes and the positioning pin holes on the base 5 to perform accurate positioning, and then screwing the first nut 4 to lock the pressing plate 1, the slicing spring 7 and the supporting end surface of the rotating shaft 3;
(5) after one slot of the linear cutting slicing spring 7 is machined (2 slots are machined at a time), the next slot is positioned and cut through clockwise or anticlockwise rotating the pressing plate 1 and the rotating shaft 3 by a pin hole position, the 32 slots are machined for 16 times in sequence, and meanwhile, the consistency of the sizes of parts is ensured.
(6) And (5) unscrewing the second nut 6 and taking down the processed split spring 7.
Claims (9)
1. The utility model provides a add clamping apparatus for sliced spring which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the wire cutting machine comprises a base (5), wherein the base (5) is detachably connected with a fixed frame of the wire cutting machine, a through hole is formed in the base (5), and a pair of positioning pin holes are formed in the surface of the base (5);
the rotating shaft (3) comprises a bearing end face and a shaft section, the bearing end face is used for supporting the bottom end of the flange edge of the slicing spring, the shaft section is matched with the through hole in the base (5), a plurality of positioning holes are formed in the bearing end face and distributed at intervals along the same circumference, and the number of the positioning holes is consistent with the number of gaps of the slicing spring;
the pressing plate (1) is a ring-shaped piece, the inner diameter of an inner ring of the ring-shaped piece is smaller than the outer diameter of the flange edge of the segmented spring, a plurality of pin holes distributed at intervals along the same circumference are formed in the ring-shaped piece, the number of the pin holes is consistent with the number of grooves of the segmented spring, and the diameters of the circumferences where the pin holes are located are equal to the diameters of the circumferences where the positioning holes are located;
and the positioning pin (2), and the positioning pin (2) is matched with the positioning pin hole, the positioning hole and the pin hole at the same time.
2. The machining clamp for the segmented spring as claimed in claim 1, wherein: the bearing is characterized in that a positioning shaft section coaxial with the shaft section is further arranged between the shaft section of the rotating shaft (3) and the bearing end face, the outer diameter of the positioning shaft section is larger than that of the shaft section, an external thread is machined on the surface of the tail end of the shaft section, and the shaft section is connected with a second nut (6) through the external thread.
3. The machining clamp for the segmented spring as claimed in claim 1, wherein: the surface of the pressing plate (1) is connected with a screw rod, a hole matched with the screw rod is formed in the supporting end face of the rotating shaft (3), and the screw rod is connected with the first nut (4) after penetrating through the hole.
4. The machining clamp for the slice spring as claimed in claim 3, wherein: the number of the screw rods is at least two, and the screw rods are distributed on the circumference coaxial with the pressure plate (1) at equal intervals.
5. The machining clamp for the segmented spring as claimed in claim 1, wherein: and a connecting line of a pair of positioning pin holes on the base (5) is positioned on a radial line of the through hole.
6. The machining clamp for the segmented spring as claimed in claim 1, wherein: the number of the positioning pins (2) is two.
7. The machining clamp for the segmented spring as claimed in claim 1, wherein: and a positioning groove is formed in the supporting end face of the rotating shaft (3), and the outer diameter of the positioning groove is equal to that of the flange edge of the slicing spring.
8. The machining method of the segmented spring comprises the step of machining a slot of the segmented spring, and is characterized in that: and a linear cutting mode is adopted, the cutting wire is positioned in a plane determined by the axial direction and the radial direction of the slicing spring, and two slot gaps positioned on the same radial line of the slicing spring are cut at one time.
9. A machining method using the machining jig for a segmented spring according to claim 1, comprising the steps of:
step one, fixing a base (5) on a fixed frame of a linear cutting machine, and adjusting the direction of the base (5) to enable the base to be vertically downward;
secondly, placing the slicing spring on the supporting end face of the rotating shaft (3), and positioning through a positioning groove on the supporting end face;
pressing the slicing spring by using a pressing plate (1), positioning by using a positioning pin (2), and then fixedly connecting the pressing plate (1) with the supporting end face of the rotating shaft (3);
and step four, the slot of the slicing spring is cut in a linear mode, two slots which are located on the radial direction of the slicing spring are machined at one time, after one slot is machined, the next slot is cut by rotating the pressing plate (1) clockwise or anticlockwise through a pin hole position, and all the slots are machined in sequence along the same direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010961075.1A CN112091340B (en) | 2020-09-14 | 2020-09-14 | Machining method and clamp for slicing spring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010961075.1A CN112091340B (en) | 2020-09-14 | 2020-09-14 | Machining method and clamp for slicing spring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112091340A true CN112091340A (en) | 2020-12-18 |
| CN112091340B CN112091340B (en) | 2022-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010961075.1A Active CN112091340B (en) | 2020-09-14 | 2020-09-14 | Machining method and clamp for slicing spring |
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| Country | Link |
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| CN (1) | CN112091340B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113634833A (en) * | 2021-08-20 | 2021-11-12 | 江西昌河航空工业有限公司 | High-precision incomplete revolution surface machining device and using method |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN112091340B (en) | 2022-12-06 |
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