Linear cutting tool for aviation parts
By designing a wire EDM fixture for bending springs, the accuracy problem caused by displacement during the cutting process of bending springs is solved by using the cooperation of positioning pins and sliding clamps, thereby improving cutting accuracy and pass rate and significantly increasing processing efficiency.
Patent Information
- Application Number
- CN202520862701.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-06
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-05-06
AI Technical Summary
During the wire cutting process of bent springs, their special shape causes displacement, which affects the cutting accuracy and results in a low part qualification rate.
A wire cutting fixture including a base plate, a fixed plate, a guide block, and a rotating handle was designed. Through the cooperation of the positioning pin and the sliding clamp, the bending spring is pre-positioned and clamped, ensuring the accuracy of the cutting process.
This improved the cutting accuracy and product qualification rate of curved springs, and significantly increased processing efficiency.
Smart Images
Figure CN223903063U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to aviation spare part manufacturing technical field, concretely relates to a wire cutting frock for aviation spare part is suitable for the wire cutting operation of bending spring. BACKGROUND
[0002] Bending spring is the important spare part in aero-engine, its shape is special, like Figure 5 Bending spring is the important spare part in aero-engine, its shape is special, like Figure 4 And then the arc edge is formed through wire cutting. Because of the particularity of the shape of bending spring, displacement is prone to occur when wire cutting is carried out, which affects cutting accuracy and leads to low qualified rate of parts. UTILITY MODEL CONTENT
[0003] The utility model discloses a wire cutting frock for aviation spare part, which is reasonable in structure and reliable in use, can guarantee the size of parts, further improve the qualified rate of products, and significantly improve the processing efficiency.
[0004] The technical scheme of the utility model is:
[0005] A wire cutting frock for aviation spare part, which comprises a base plate and a fixed plate, and the technical key points are as follows: the rear part of the fixed plate is connected and fixed with the base plate, the front part of the fixed plate is suspended and is provided with a cutting avoidance notch at the middle position, left and right side vertical plates are fixed on the left and right sides of the front part of the fixed plate, left and right guide blocks are fixed on the upper surface of the fixed plate at the left and right sides of the cutting avoidance notch, a left sliding clamp block is inserted into the left guide block, and a right sliding clamp block is inserted into the right guide block, left and right rotating handles are respectively threadedly connected to the left and right side vertical plates, the tip of the left rotating handle is on the left sliding clamp block, the tip of the right rotating handle is on the right sliding clamp block, inclined pressing surfaces for clamping bending springs are symmetrically arranged at the opposite ends of the left and right sliding clamp blocks, a positioning base table corresponding to the bending spring is arranged between the left and right inner side walls of the cutting avoidance notch, a positioning pin is arranged in the middle of the upper surface of the positioning base table, and the front and rear edges of the positioning base table are respectively arc edges for avoiding wire cutting operation.
[0006] The lower surfaces of the left and right guide blocks are respectively provided with inverted U-shaped guide grooves corresponding to the left and right sliding clamp blocks.
[0007] The left guide block and the right guide block are respectively fixed with horizontal guide rods at opposite sides, opposite sides of the left sliding clamping block and the right sliding clamping block are respectively provided with limiting tables, the limiting tables are provided with through holes corresponding to the horizontal guide rods, the horizontal guide rods are sleeved with return springs, and the return springs are connected between the limiting tables and the left guide block or the right guide block.
[0008] The utility model discloses the beneficial effect is:
[0009] 1, work, make the positioning pin on the positioning base pass through the through -hole of the bottom surface of the bending spring to be cut, realize the pre -positioning of the bending spring to be cut.
[0010] 2, when carrying out the wire cutting, the interval of the arc edge of the front and back of the positioning base is less than the target width of the bending spring, avoids the interference wire cutting operation. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 It is the structural schematic diagram of the utility model;
[0012] Figure 2 It is Figure 1 It is the A-A section view;
[0013] Figure 3 It is Figure 1 It is the B-B section view in Fig.
[0014] Figure 4 It is the plan view of the bending spring to be cut;
[0015] Figure 5 It is the plan view of the bending spring after cutting.
[0016] In the drawing: 1. bottom plate, 2. left rotating handle, 3. left side stand, 4. horizontal guide rod, 5. left sliding clamping block, 6. left guide block, 7. positioning base, 8. positioning pin, 9. right guide block, 10. right sliding clamping block, 11. right side stand, 12. right rotating handle, 13. return spring, 14. fixed plate, 15. bending spring, 16. bending spring to be cut. DETAILED DESCRIPTION
[0017] The utility model is described in detail according to the drawing of specification.
[0018] As Figures 1-3 Shown, this wire cutting tool for aviation parts, including bottom plate 1 and fixed plate 14.
[0019] The fixed plate 14 is connected and fixed with the bottom plate 1 at the rear part, and is suspended at the front part and is provided with a cutting avoiding gap at the middle part. The left and right sides of the front part of the fixed plate 14 are fixed with the left and right vertical plates 3 and 11. The upper surface of the fixed plate 14 is fixed with the left and right guide blocks 6 and 9 at the left and right sides of the cutting avoiding gap, the left guide block 6 is inserted with the left sliding clamp block 5, and the right guide block 9 is inserted with the right sliding clamp block 10. The left and right vertical plates 3 and 11 are respectively screwed with the left and right rotating handles 2 and 12, the tip of the left rotating handle 2 is on the left sliding clamp block 5, and the tip of the right rotating handle 12 is on the right sliding clamp block 10. The opposite ends of the left and right sliding clamp blocks 5 and 10 are symmetrically provided with inclined pressing surfaces for clamping the bent spring 15. The left and right inner side walls of the cutting avoiding gap are provided with a positioning base 7 corresponding to the bent spring 15, the upper surface of the positioning base 7 is provided with a positioning pin 8, and the front and rear edges of the positioning base 7 are respectively arc-shaped edges for avoiding the wire cutting operation.
[0020] In the embodiment, the lower surfaces of the left and right guide blocks 6 and 9 are respectively provided with inverted U-shaped guide grooves corresponding to the left and right sliding clamp blocks 5 and 10. The opposite sides of the left and right guide blocks 6 and 9 are respectively fixed with horizontal guide rods 4, the opposite sides of the left and right sliding clamp blocks 5 and 10 are respectively provided with limiting tables, the limiting tables are provided with through holes corresponding to the horizontal guide rods 4, the horizontal guide rods 4 are sleeved with return springs 13, and the return springs 13 are connected between the limiting tables and the left and right guide blocks 6 and 9.
[0021] Operation method:
[0022] Referring to Figure 2 , the bent spring 16 to be cut (see Figure 4 ) is placed on the positioning base 7, the positioning pin 8 on the positioning base 7 passes through the through hole in the bottom surface of the bent spring 16 to be cut, and the bent spring 16 to be cut is pre-positioned. Then, the left and right rotating handles 2 and 12 are rotated, the left and right sliding clamp blocks 5 and 10 are relatively moved, the left and right side walls of the bent spring are clamped, the bent spring 16 to be cut is completely positioned, and the wire cutting is prepared.
[0023] After the cutting is completed, the left and right rotating handles 2 and 12 are reversely rotated, the constraint on the bent spring 15 is released, and the left and right sliding clamp blocks 5 and 10 are pushed back to the original positions under the action of the return springs 13. The bent spring 15 (see Figure 5 ) is taken off from the positioning pin 8.
[0024] The embodiments of the present application are described in detail above, but the content is only the preferred embodiments of the present application, and cannot be considered to limit the scope of the present application. Any equivalent changes and improvements made within the scope of the present application are still within the scope of the present patent.
Claims
1. A wire cutting tooling for aerospace parts comprising a base plate and a fixed plate, characterized in that: The rear part of the fixed plate is connected with the bottom plate, the front part of the fixed plate is suspended and is provided with a cutting avoiding gap at the middle position, the left and right sides of the front part of the fixed plate are fixed with left and right vertical plates, the upper surface of the fixed plate is fixed with left and right guide blocks at the left and right sides of the cutting avoiding gap, the left guide block is inserted with a left sliding clamp block, the right guide block is inserted with a right sliding clamp block, the left and right vertical plates are respectively screwed with left and right rotating handles, the tip of the left rotating handle is on the left sliding clamp block, the tip of the right rotating handle is on the right sliding clamp block, the opposite ends of the left and right sliding clamp blocks are symmetrically provided with inclined pressing surfaces for clamping the bending spring, the left and right inner side walls of the cutting avoiding gap are provided with a positioning base corresponding to the bending spring, the middle part of the upper surface of the positioning base is provided with a positioning pin, and the front and rear edges of the positioning base are respectively arc-shaped edges for avoiding wire cutting operation.
2. The wire cutting tooling for aerospace parts of claim 1, wherein: The lower surfaces of the left and right guide blocks are respectively provided with inverted U-shaped guide grooves corresponding to the left and right sliding clamp blocks.
3. The wire cutting tooling for aerospace parts of claim 1, wherein: The opposite sides of the left and right guide blocks are respectively fixed with horizontal guide rods, the opposite sides of the left and right sliding clamp blocks are respectively provided with limiting bases, the limiting bases are provided with through holes corresponding to the horizontal guide rods, the horizontal guide rods are sleeved with return springs, and the return springs are connected between the limiting bases and the left or right guide blocks.