A multi-functional bidirectional follow-up spinning device

Abstract

The present invention provides a multi-functional bidirectional follow-up spinning device, belonging to the technical field of machining. The device includes a core mold, ball bearings, bearings, upper support arms, positioning top blocks, lower support arms, a base, a raw material plate, a driving gear, a follow-up gear, a follow-up gear with a boss, and a turning tool. The present invention drives the lower support arm and the upper support arm by rotating the driving gear to adjust the position of the ball bearings, so as to realize the selection and processing of parts with different sizes; the present invention realizes bidirectional co-spinning processing, effectively solves the manufacturing problem of rotary structure sheet metal forming parts, and adds the function of cutting out surplus materials after spinning processing.

Description

Technical Field

[0001] The present invention belongs to the technical field of machining, and relates to a multi-functional bidirectional follow-up spinning device. Background Art

[0002] Spinning technology, also known as metal spinning forming technology, makes the force application point change from point to line and from line to surface through rotation, and at the same time applies a certain pressure in a certain direction to make the metal material deform and flow along this direction to form a certain shape. Traditional spinning processing generally uses single-sided contact for spinning, and the force during the spinning process is not uniform enough, resulting in poor spinning processing effects.

[0003] Based on this, the present invention provides a multi-functional bidirectional follow-up spinning device to achieve bidirectional co-spinning processing, effectively solve the manufacturing problems of rotary structure sheet metal forming parts, and add the function of cutting off the surplus material after spinning processing. Summary of the Invention

[0004] The purpose of the present invention is to provide a multi-functional bidirectional follow-up spinning device to achieve bidirectional co-spinning processing, effectively solve the manufacturing problems of rotary structure sheet metal forming parts, and add the function of cutting out the surplus material after spinning processing.

[0005] The technical solution of the present invention is as follows:

[0006] A multi-functional bidirectional follow-up spinning device includes a mandrel 1, a ball 2, a bearing 3, an upper support arm 4, a positioning top block 5, a lower support arm 6, a base 7, a raw material plate 8, a driving gear 9, a follow-up gear 10, a follow-up gear 11 with a boss, and a turning tool 12.

[0007] The outer profile of the mandrel 1 is the male die outer shape of the part to be formed, and it is installed on the three-jaw chuck of the lathe; the positioning top block 5 is the mating outer shape of the part to be formed, and it is installed on the tailstock of the lathe. The raw material plate 8 is the part raw material plate and is placed between the mandrel 1 and the positioning top block 5.

[0008] There are two upper support arms 4, which are respectively placed on both sides of the positioning top block 5. One end of the upper support arm 4 is conical, and there is a hole at the top of the cone. A spherical ball 2 is installed in the hole, and the ball 2 can rotate freely in the hole. There is a groove at the position of the upper support arm 4 close to the cone, and a bearing 3 is installed in the groove; there is a cylindrical hole on the side wall perpendicular to the groove, and a pin 13 passes through the cylindrical hole to fix the bearing 3. The bearing 3 is a ball bearing, which contacts the ball 2 and can bear a large pressure. The other end of the upper support arm 4 has a countersunk hole, and there is a protruding key at the contact position with the lower support arm 6.

[0009] One end of the lower arm 6 is provided with a boss, the center of the boss is provided with a threaded hole, and multi-angle key grooves are formed in the circumferential direction of the threaded hole. The protruding key of the upper arm 4 is inserted into the key groove and is positioned and fixed by bolts; the other end of the lower arm 6 is semi-circular arc-shaped, a counterbore is formed in the center of its upper surface, and a key groove is formed in the circumferential direction of the hole on its lower surface.

[0010] The base 7 is a cuboid, and two counterbores are provided thereon for threaded connection with the middle carriage of the lathe. Four mutually connected circular pits are provided on the upper surface of the base 7, protruding mandrels are provided at the centers of the circular pits, and the axes of the mandrels are parallel, and threaded holes are provided at the centers of the mandrels.

[0011] The driving gear 9, the follower gear 10, and the two follower gears 11 with bosses are sequentially placed in the four circular pits, and the four are meshed with each other.

[0012] The outer circle of the driving gear 9 has teeth. The driving gear 9 is installed on the mandrel in the circular pit of the base 7 through the blind hole on its bottom surface and can rotate freely around the mandrel in the circular pit of the base 7; a hexagonal blind hole is formed at the center of the upper surface of the driving gear 9. The thickness of the driving gear 9 is greater than the depth of the circular pit of the base 7.

[0013] A hole is formed at the center of the follower gear 10. It is installed on the mandrel in the circular pit of the base 7 and can rotate freely around the mandrel in the circular pit of the base 7. The thickness of the follower gear 10 is equal to the depth of the circular pit of the base 7.

[0014] A hole is formed at the center of the follower gear 11 with a boss. It is installed on the mandrel in the circular pit of the base 7 and can rotate freely around the mandrel in the circular pit of the base 7. A key is provided on the upper surface of the follower gear 11 with a boss, which is matched with the key groove on the lower surface of the semi-circular arc-shaped end of the lower arm 6 and is fixedly connected by bolts. Except for the key, the thickness of the follower gear 11 with a boss is less than the depth of the circular pit of the base 7.

[0015] The turning tool 12 is welded on the base 7.

[0016] The beneficial effects of the present invention:

[0017] (1) By rotating the driving gear to drive the lower arm and the upper arm, the position of the ball is adjusted to realize the selection and processing of parts of different sizes;

[0018] (2) Realize two-way co-rotary pressing processing, effectively solve the manufacturing problem of rotary structure sheet metal forming parts;

[0019] (3) Add the function of cutting out the surplus material after rotary pressing processing. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the overall structure and working principle of the present invention.

[0021] Figure 2 Schematic diagram of the upper arm; among which, (a) is the axonometric drawing A; (b) is the axonometric drawing B.

[0022] Figure 3 Schematic diagram of the lower arm; among which, (a) is the axonometric drawing A; (b) is the axonometric drawing B.

[0023] Figure 4 Schematic diagram of the base.

[0024] In the figure: 1 core mold; 2 ball; 3 bearing; 4 upper arm; 5 positioning top block; 6 lower arm; 7 base; 8 raw material plate; 9 driving gear; 10 follower gear; 11 follower gear with boss; 12 turning tool; 13 pin. Specific implementation mode

[0025] The following further explains the specific implementation mode of the present invention in conjunction with the embodiments and the drawings, but is not used to limit the present invention.

[0026] As Figure 1 shown, a multifunctional two-way follower spinning device includes a core mold 1, a ball 2, a bearing 3, an upper arm 4, a positioning top block 5, a lower arm 6, a base 7, a raw material plate 8, a driving gear 9, a follower gear 10, a follower gear with boss 11 and a turning tool 12.

[0027] The outer profile of the core mold 1 is the male mold outer shape of the part to be formed, and it is installed on the three-jaw chuck of the lathe; the positioning top block 5 is the mating outer shape of the part to be formed, and it is installed on the tailstock of the lathe. The raw material plate 8 is the part raw material plate and is placed between the core mold 1 and the positioning top block 5.

[0028] There are two upper arms 4 in total, which are respectively placed on both sides of the positioning top block 5. As Figure 2 (a) shown, one end of the upper arm 4 is conical, there is a hole at the top of the cone, and a spherical ball 2 is installed in the hole. After the edge of the hole is closed, the ball 2 will not fall out, and the ball 2 can rotate freely. There is a groove at the position of the upper arm 4 close to the cone, and a bearing 3 is installed in the groove; there is a cylindrical hole on the side wall perpendicular to the groove, and the pin 13 passes through the cylindrical hole to fix the bearing 3. The bearing 3 is a ball bearing, which contacts the ball 2 and can bear a large pressure. As Figure 2 (b) shown, there is a counterbore at the other end of the upper arm 4, and there is a protruding key at the contact position with the lower arm 6.

[0029] As Figure 3 shown, one end of the lower arm 6 is provided with a boss, there is a threaded hole in the center of the boss, and multi-angle key grooves are opened in the circumferential direction of the threaded hole. The protruding key of the upper arm 4 is inserted into the key groove and is positioned and fixed by bolts; the other end of the lower arm 6 is semi-circular arc-shaped, there is a counterbore in the center of its upper surface, and a key groove is opened in the circumferential direction of the hole on its lower surface.

[0030] As Figure 4 shown, the base 7 is a cuboid, on which there are two countersunk holes for threaded connection with the middle carriage of the lathe. There are four mutually connected circular pits on the upper surface of the base 7, and protruding mandrels are provided at the centers of the circular pits, and the axes of the mandrels are parallel, and threaded holes are provided at the centers of the mandrels.

[0031] The driving gear 9, the follower gear 10, and the two follower gears 11 with convex platforms are sequentially placed into the four circular pits and mesh with each other.

[0032] The outer circle of the driving gear 9 has teeth. The driving gear 9 is installed on the mandrel in the circular pit of the base 7 through the blind hole on its bottom surface and can rotate freely around the mandrel in the circular pit of the base 7; a hexagonal blind hole is opened at the center of the upper surface of the driving gear 9. The thickness of the driving gear 9 is greater than the depth of the circular pit of the base 7.

[0033] A hole is opened at the center of the follower gear 10, and it is installed on the mandrel in the circular pit of the base 7 and can rotate freely around the mandrel in the circular pit of the base 7. The thickness of the follower gear 10 is equal to the depth of the circular pit of the base 7.

[0034] A hole is opened at the center of the follower gear 11 with a convex platform, and it is installed on the mandrel in the circular pit of the base 7 and can rotate freely around the mandrel in the circular pit of the base 7. A key is provided on the upper surface of the follower gear 11 with a convex platform, which is matched with the keyway on the lower surface of the semi-circular arc end of the lower support arm 6 and is fixedly connected by bolts. Except for the key, the thickness of the follower gear 11 with a convex platform is less than the depth of the circular pit of the base 7.

[0035] The turning tool 12 is welded to the base 7.

[0036] The specific implementation steps of the above-mentioned multifunctional bidirectional follow-up spinning device are as follows:

[0037] 1) Install the core mold 1 on the three-jaw chuck of the ordinary lathe;

[0038] 2) According to the parts to be spun formed, adjust the angle formed between the upper support arm 4 and the lower support arm 6 through the keyway and fasten it with bolts;

[0039] 3) Install the two upper support arms 4, the two lower support arms 6, the driving gear 9, the follower gear 10, and the two follower gears 11 with convex platforms;

[0040] 4) Install the positioning top block 5 on the tailstock of the lathe, move the tailstock to drive the positioning top block 5 to tightly press the raw material plate 8 and the core mold 1 firmly;

[0041] 5) Start the lathe, and the rotation of the three-jaw chuck drives the core mold 1 to rotate;

[0042] 6) Insert a hexagon wrench into the hexagon socket on the upper surface of the driving gear 9, rotate the driving gear 9 to drive the follower gear 10 and the follower gear 11 with a boss to rotate, and further drive the lower support arm 6 and the upper support arm 4 to rotate;

[0043] 7) Move the middle carriage of the lathe, bring the ball 2 close to the raw material plate 8, further feed and continuously adjust the hexagon wrench to make the ball 2 spin and form along the shape of the core mold 1;

[0044] 8) Finally, cut off the excess part with the turning tool 12.

[0045] In summary, the above are only the preferred embodiments of the invention and are not intended to limit the protection scope of the invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the invention shall be included in the protection scope of the invention.

Claims

1. A multifunctional bidirectional follow-up spinning device, characterized in that, the device comprises a mandrel (1), ball bearings (2), bearings (3), upper support arms (4), positioning top blocks (5), lower support arms (6), a base (7), a driving gear (9), a follow-up gear one (10), a follow-up gear two (11) with a boss and a turning tool (12); the outer surface of the mandrel (1) is the male mold shape of the part to be formed, and it is installed on the three-jaw chuck of the lathe; the positioning top block (5) is the mating shape of the part to be formed, and it is installed on the tailstock of the lathe; the raw material plate (8) is the part raw material plate and is placed between the mandrel (1) and the positioning top block (5); there are two upper support arms (4) in total, which are respectively placed on both sides of the positioning top block (5); one end of the upper support arm (4) is conical, and there is a hole at the top of the cone. A spherical ball bearing (2) is installed in the hole, and the ball bearing (2) can rotate freely in the hole; there is a groove at the position of the upper support arm (4) close to the cone, and a bearing (3) is installed in the groove, which contacts the ball bearing (2) and can bear a large pressure; there is a cylindrical hole on the side wall perpendicular to the groove, and a pin passes through the cylindrical hole to fix the bearing (3); there is a counterbore at the other end of the upper support arm (4), and a protruding key is provided at the contact position with the lower support arm (6); one end of the lower support arm (6) is provided with a boss, and there is a threaded hole at the center of the boss. Multi-angle key grooves are opened in the circumferential direction of the threaded hole. The protruding key of the upper support arm (4) is inserted into the key groove and is positioned and fixed by bolts; the other end of the lower support arm (6) is semi-circular arc-shaped, and there is a counterbore at the center of its upper surface, and a key groove is opened in the circumferential direction of the hole on its lower surface; the base (7) is connected to the middle carriage of the lathe, and a turning tool (12) is welded on the base (7); there are four mutually connected circular pits on the upper surface of the base (7), and protruding mandrels are provided at the centers of the circular pits, and the axes of the mandrels are parallel, and there is a threaded hole at the center of the mandrel; the driving gear (9), the follow-up gear one (10), and two follow-up gears two (11) with bosses are sequentially installed on the mandrels in the four circular pits of the base (7), and can all rotate freely around the mandrels, and the four are meshed with each other; the driving gear (9) is installed on the mandrel in the circular pit of the base (7) through the blind hole on its bottom surface; a hole is opened in the center of the follow-up gear one (10), and it is installed on the mandrel in the circular pit of the base (7); a hole is opened in the center of the follow-up gear two (11) with a boss, and it is installed on the mandrel in the circular pit of the base (7); a key is provided on the upper surface of the follow-up gear two (11) with a boss, which is matched with the key groove on the lower surface of the semi-circular arc-shaped end of the lower support arm (6) and is fixedly connected by bolts.

2. A multifunctional bidirectional follow-up spinning device according to claim 1, characterized in that, the thickness of the driving gear (9) is greater than the depth of the circular pit of the base (7); the thickness of the follow-up gear one (10) is equal to the depth of the circular pit of the base (7); the thickness of the follow-up gear two (11) with a boss, excluding the key, is less than the depth of the circular pit of the base (7).

3. A multifunctional bidirectional follow-up spinning device according to claim 1 or 2, characterized in that, A hexagonal blind hole is formed at the center of the upper surface of the driving gear (9); the bearing (3) is a ball bearing.

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