Spring machining cutter

Abstract

The utility model relates to the technical field of spring machining, in particular to a spring machining cutter which comprises an arc-shaped frame, a central circular ring is arranged in the arc-shaped frame, three fixing plates which are arranged in an annular array are fixedly connected to the outer surface of the central circular ring, a cutter head is installed at one end of each fixing plate, and the other end of each fixing plate is provided with a spring. The U-shaped positioning piece is fixedly connected with the center circular ring, the center of the center circular ring is fixedly connected with a rotating shaft, the rotating shaft is rotationally connected with the arc-shaped frame, and the two ends of the rotating shaft penetrate through the arc-shaped frame and extend to the outside of the arc-shaped frame. The fixing plate drives the tool bits to rotate together, the tool bits in the arc-shaped frame can be rotated out of the arc-shaped frame for spring machining, the tool bits which are not used are rotated into the arc-shaped frame, potential safety hazards are avoided, the safety of the tool is improved, meanwhile, the tool bits of different specifications can be rapidly switched, and springs of different specifications can be machined.

Description

Technical Field

[0001] The utility model relates to the technical field of spring processing, in particular to a spring processing tool. Background Art

[0002] A spring is a mechanical part that uses elasticity to work. Parts made of elastic materials deform under the action of external force and return to their original shape after the external force is removed. After the spring is CNC wound, it needs to be cut with a tool.

[0003] In the prior art, there is a non-interference spring processing tool proposed in patent application number "CN201921015981.1", which belongs to the field of spring processing, and includes a mounting shell, an upper mounting groove and a cutter head. The mounting shell is provided with an upper mounting groove, and a cutter head is installed inside the upper mounting groove.

[0004] However, in the prior art, the spring processing tool can be installed and disassembled with the cutter head. When processing springs of different specifications, it is necessary to install and disassemble the cutter head once to replace the cutter head of different specifications for spring processing. The operation is complicated and inconvenient to process springs of different specifications. Utility Model Content

[0005] The purpose of the utility model is to provide a spring processing tool to solve the problems raised in the above background technology.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A spring processing tool comprises an arc-shaped frame, wherein a central ring is arranged inside the arc-shaped frame, three fixing plates in a circular array are fixedly connected to the outer surface of the central ring, a cutter head is installed at one end of the fixing plate, a rotating shaft is fixedly connected to the center of the central ring, and the rotating shaft is rotatably connected to the arc-shaped frame.

[0008] Both ends of the rotating shaft pass through the arc frame and extend to the outside of the arc frame. One end of the rotating shaft is fixedly connected to a hexagonal nut. A U-shaped positioning piece that can move up and down is provided on one side of the arc frame. The inner surface of the U-shaped positioning piece contacts the planes on both sides of the hexagonal nut for positioning the hexagonal nut.

[0009] Preferably, an arc-shaped end is fixedly connected to one side of the arc-shaped frame and located above the hexagonal nut, and the arc-shaped end is matched with the U-shaped positioning piece.

[0010] Preferably, the top of the arc-shaped end is fixedly connected to two guide shafts, the guide shafts are slidably connected to the U-shaped positioning piece, the top of the guide shafts is fixedly connected to a fixed block, one side of the fixed block is fixedly connected to the arc frame, a pressure spring is sleeved on the guide shaft, the bottom of the pressure spring is fixedly connected to the U-shaped positioning piece, and the top of the pressure spring is fixedly connected to the fixed block.

[0011] Preferably, one end of the fixing plate is fixedly connected to a fixing recessed block, and locking screw shafts and locking nuts are respectively provided on two sides of the fixing recessed block.

[0012] Preferably, a connecting bracket is fixedly connected to the top of the arc-shaped frame, and a fixing hole is provided on the connecting bracket.

[0013] Preferably, one end of the rotating shaft away from the hexagonal nut is fixedly connected to a rotating ring, three arc-shaped grooves are evenly arranged on the rotating ring, a U-shaped sleeve is fixedly connected to one side of the arc-shaped frame and located above the rotating ring, an adjusting spring is fixedly connected to the U-shaped sleeve, and an arc-shaped protrusion used in conjunction with the arc-shaped groove is fixedly connected to the bottom of the adjusting spring.

[0014] Beneficial effects of the utility model:

[0015] The utility model manually moves up the U-shaped positioning piece, at which time the hexagonal nut can be rotated to drive the rotating shaft and the fixed plate to rotate, and the fixed plate drives the cutter head to rotate together, so that the cutter head inside the arc frame can be rotated to the outside of the arc frame for spring processing, and the unused cutter head can be rotated to the inside of the arc frame to avoid safety hazards and improve the safety of the tool. At the same time, cutter heads of different specifications can be quickly switched to process springs of different specifications. The operation is simple and convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the prior art description are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This utility model Figure 1 Rear view of the mid-arc frame;

[0019] Figure 3 This utility model Figure 1 A cross-sectional view of the middle arc frame;

[0020] Figure 4 This utility model Figure 3Structural diagram of the middle fixed plate;

[0021] Figure 5 This utility model Figure 4 Rear view of the center fixing plate.

[0022] The reference numerals in the figures are as follows:

[0023] 1. Arc frame, 2. Center ring, 3. Fixed plate, 4. Cutter head, 5. Rotating shaft, 6. Hexagonal nut, 7. U-shaped positioning piece, 8. Arc end, 9. Guide shaft, 10. Fixed block, 11. Pressure spring, 12. Fixed concave block, 13. Locking screw shaft, 14. Locking nut, 15. Connecting bracket, 16. Fixed hole, 17. Rotating circle, 171. Arc groove, 18. U-shaped sleeve, 19. Adjustment spring, 20. Arc protrusion. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] A spring processing tool comprises an arc frame 1, wherein a center ring 2 is arranged inside the arc frame 1, three fixing plates 3 in a ring array are fixedly connected to the outer surface of the center ring 2, a cutter head 4 is installed at one end of the fixing plate 3, a rotating shaft 5 is fixedly connected to the center of the center ring 2, and the rotating shaft 5 is rotatably connected to the arc frame 1.

[0026] Both ends of the rotating shaft 5 pass through the arc frame 1 and extend to the outside of the arc frame 1. One end of the rotating shaft 5 is fixedly connected to a hexagonal nut 6. A U-shaped positioning piece 7 that can move up and down is provided on one side of the arc frame 1. The inner surface of the U-shaped positioning piece 7 is in contact with the planes on both sides of the hexagonal nut 6 for positioning the hexagonal nut 6.

[0027] like Figure 1 and Figure 3 The arc frame 1 is cut into a circle, and its arc portion and the center of the fixed plate 3 and the rotating shaft 5 are located in the same horizontal direction. Both ends of the rotating shaft 5 extend out of the arc frame 1, so that the hexagonal nuts 6 and the rotating ring 17 fixed at both ends of the rotating shaft 5 are respectively located on both sides of the arc frame 1, and the specifications of the cutter head 4 installed on each fixed plate 3 are inconsistent.

[0028] An arc-shaped end 8 is fixedly connected to one side of the arc-shaped frame 1 and located above the hexagonal nut 6 , and the arc-shaped end 8 is matched with the U-shaped positioning piece 7 .

[0029] like Figure 1 The arc surface at the top of the arc-shaped end 8 and the arc surface on the inner surface of the U-shaped positioning member 7 are in contact with each other, which can prevent the U-shaped positioning member 7 from moving downward.

[0030] The top of the arc-shaped end 8 is fixedly connected to two guide shafts 9, the guide shaft 9 is slidably connected to the U-shaped positioning piece 7, the top of the guide shaft 9 is fixedly connected to a fixed block 10, one side of the fixed block 10 is fixedly connected to the arc frame 1, a pressure spring 11 is sleeved on the guide shaft 9, the bottom of the pressure spring 11 is fixedly connected to the U-shaped positioning piece 7, and the top of the pressure spring 11 is fixedly connected to the fixed block 10.

[0031] like Figure 1 The guide shaft 9 passes through the U-shaped positioning member 7 so that the U-shaped positioning member 7 can only move up and down, and the pressure spring 11 applies downward pressure to the U-shaped positioning member 7.

[0032] One end of the fixing plate 3 is fixedly connected to a fixing recess 12 , and two sides of the fixing recess 12 are respectively provided with a locking screw shaft 13 and a locking nut 14 .

[0033] like Figure 3 , Figure 4 and Figure 5 There are openings on the fixed recessed block 12 and the cutter head 4, so that the locking screw shaft 13 can pass through the fixed recessed block 12 and the cutter head 4 and be threadedly connected to the locking nut 14, fixing the cutter head 4 and the fixed plate 3 together, thereby realizing the installation and disassembly of the cutter head 4.

[0034] A connecting bracket 15 is fixedly connected to the top of the arc-shaped frame 1 , and a fixing hole 16 is formed on the connecting bracket 15 .

[0035] like Figure 1 By connecting the bracket 15 and the fixing hole 16, the arc frame 1 is conveniently connected to the external mechanism, and the external mechanism is used to drive the arc frame 1 and the cutter head 4 to perform spring processing.

[0036] One end of the rotating shaft 5 away from the hexagonal nut 6 is fixedly connected to a rotating ring 17, and three arc-shaped grooves 171 are evenly opened on the rotating ring 17. A U-shaped sleeve 18 is fixedly connected to one side of the arc frame 1 and located above the rotating ring 17. An adjusting spring 19 is fixedly connected to the U-shaped sleeve 18, and an arc-shaped protrusion 20 used in conjunction with the arc-shaped groove 171 is fixedly connected to the bottom of the adjusting spring 19.

[0037] like Figure 2 , Figure 3 , Figure 4 and Figure 5The interval angle between the three arc-shaped grooves 171 is 120°, so that each time the rotating shaft 5 rotates to drive the central ring 2 to rotate, the rotating circle 17 rotates accordingly and squeezes the arc surface of the arc-shaped protrusion 20 through the inner wall of the arc-shaped groove 171, so that the arc-shaped protrusion 20 moves up. When the rotating shaft 5 drives the central ring 2 and the rotating circle 17 to rotate 120°, the adjusting spring 19 presses the arc-shaped protrusion 20 into the arc-shaped groove 171, and the arc-shaped protrusion 20 provides resistance to the rotation of the rotating circle 17, so that the rotating shaft 5 is easier to rotate 120°, and the fixed plate 3 and the cutter head 4 located inside the arc frame 1 are rotated to the bottom of the arc frame 1.

[0038] The working principle of a spring processing tool provided by the utility model is as follows:

[0039] The cutter head 4 located outside the arc frame 1 is used for processing springs. When it is necessary to switch different cutters to process springs of different specifications, the U-shaped positioning piece 7 is manually pulled upward, and the inner wall of the U-shaped positioning piece 7 and the hexagonal nut 6 are separated. At this time, the hexagonal nut 6 can be rotated, and the hexagonal nut 6 drives the rotating shaft 5 and the center ring 2 to rotate. The center ring 2 can drive the fixed plate 3 and the cutter head 4 to rotate, and the cutter head 4 inside the arc frame 1 is rotated out for use, and then the external cutter head 4 is rotated into the arc frame 1;

[0040] After the rotation of the cutter head 4 is completed, the U-shaped positioning piece 7 is loosened, and the pressure spring 11 stretches and squeezes the U-shaped positioning piece 7, so that the inner surface of the U-shaped positioning piece 7 moves to both sides of the hexagonal nut 6 to prevent the hexagonal nut 6 from rotating. At this time, the rotating shaft 5 and the center ring 2 will not rotate either, and the positioning of the cutter head 4 is completed.

[0041] Compared with the related art, the spring processing tool provided by the utility model has the following beneficial effects:

[0042] The utility model manually moves up the U-shaped positioning member 7, at which time the hexagonal nut 6 can be rotated to drive the rotating shaft 5 and the fixed plate 3 to rotate, and the fixed plate 3 drives the cutter head 4 to rotate together, so that the cutter head 4 inside the arc frame 1 can be rotated out of the arc frame 1 to process the spring, and the unused cutter head 4 can be rotated into the arc frame 1 to avoid safety hazards and improve the safety of the tool. At the same time, the cutter heads 4 of different specifications can be quickly switched to process springs of different specifications. The operation is simple and convenient to use.

[0043] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A spring machining tool, comprising an arc-shaped frame (1), characterized in that: A central ring (2) is arranged inside the arc-shaped frame (1); three fixing plates (3) in a ring array are fixedly connected to the outer surface of the central ring (2); a cutter head (4) is installed at one end of the fixing plate (3); a rotating shaft (5) is fixedly connected to the center of the central ring (2); and the rotating shaft (5) and the arc-shaped frame (1) are rotatably connected; Both ends of the rotating shaft (5) penetrate the arc frame (1) and extend to the outside of the arc frame (1); one end of the rotating shaft (5) is fixedly connected to a hexagonal nut (6); one side of the arc frame (1) is provided with a U-shaped positioning piece (7) that can move up and down; the inner surface of the U-shaped positioning piece (7) contacts the planes on both sides of the hexagonal nut (6) for positioning the hexagonal nut (6).

2. A spring machining tool according to claim 1, characterized in that: An arc-shaped end head (8) is fixedly connected to one side of the arc-shaped frame (1) and located above the hexagonal nut (6), and the arc-shaped end head (8) is matched with the U-shaped positioning piece (7).

3. A spring machining tool according to claim 2, characterized in that: The top of the arc-shaped end (8) is fixedly connected to two guide shafts (9), the guide shafts (9) are slidably connected to the U-shaped positioning piece (7), the top of the guide shaft (9) is fixedly connected to a fixing block (10), one side of the fixing block (10) is fixedly connected to the arc-shaped frame (1), a pressure spring (11) is sleeved on the guide shaft (9), the bottom of the pressure spring (11) is fixedly connected to the U-shaped positioning piece (7), and the top of the pressure spring (11) is fixedly connected to the fixing block (10).

4. A spring machining tool according to claim 1, characterized in that: One end of the fixing plate (3) is fixedly connected to a fixing recessed block (12), and a locking screw shaft (13) and a locking nut (14) are respectively provided on both sides of the fixing recessed block (12).

5. The spring machining tool according to claim 1, characterized in that: A connecting bracket (15) is fixedly connected to the top of the arc-shaped frame (1), and a fixing hole (16) is provided on the connecting bracket (15).

6. A spring machining tool according to claim 1, characterized in that: A rotating ring (17) is fixedly connected to one end of the rotating shaft (5) away from the hexagonal nut (6), and three arc-shaped grooves (171) are evenly arranged on the rotating ring (17). A U-shaped sleeve (18) is fixedly connected to one side of the arc-shaped frame (1) and located above the rotating ring (17), and an adjustment spring (19) is fixedly connected to the U-shaped sleeve (18). The bottom of the adjustment spring (19) is fixedly connected to an arc-shaped protrusion (20) used in conjunction with the arc-shaped groove (171).

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