Crankshaft flywheel structure of high-speed precision press

Abstract

The utility model discloses a crankshaft flywheel structure of a high-speed precision press machine, which comprises a machine body, a crankshaft, a flywheel and a planetary transmission mechanism arranged between the flywheel and the crankshaft, the planetary transmission mechanism comprises a sun wheel, a planet wheel, a planet carrier and a gear ring, the planet wheel is arranged on the planet carrier, the planet carrier is connected with the crankshaft, and the gear ring is connected with the crankshaft. And the flywheel is fixedly connected with the sun gear. According to the technical scheme, low-speed and high-speed normal operation of the press machine is achieved, and the application range is widened; and meanwhile, transmission stability is enhanced, stamping part precision is improved, and precision part quality is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to a press machine technical field, especially a high -speed precision press machine crankshaft flywheel structure. BACKGROUND

[0002] High -speed precision press machine is with the high stamping precision, the fast and the automation degree higher advantage, plays the key role in the mass production of precision parts, such as motor stator core, transformer core, IC lead frame etc. are manufactured. However, at present, this field has many technical problems:

[0003] First, high -speed precision press machine has the minimum speed limit of allowing use, if the speed is lower than this limit value when the die is debugged, the die is easy to be stuck, for this, need to add the die stuck release device in the transmission system, this undoubtedly reduces the use efficiency of equipment;

[0004] Second, along with the continuous promotion of the precision requirement of parts, the traditional low -speed press machine can not satisfy the production demand, and when trying to stamp on the high -speed press machine, since the stamping speed is often far lower than the minimum use speed of high -speed press machine, to ensure the stamping effect, the flywheel inertia needs to be increased greatly, which may cause the flywheel size to exceed the maximum size of the press machine frame, so that the stamping operation is difficult to realize;

[0005] Third, part enterprises try to use servo motor to directly drive high -speed precision press machine, although full speed coverage can be realized, but the servo motor torque is large and the servo control system cost is high, the overall economy is poor, and it is only suitable for part small tonnage models.

[0006] In view of the above technical problems, the present application provides a high -speed precision press machine crankshaft flywheel structure to realize the full speed coverage of high -speed precision press machine from low speed to high speed, expand its application field, and become a problem to be solved. CONTENT OF THE UTILITY MODEL

[0007] In view of the above shortcomings of the prior art, the utility model aims at providing a high -speed precision press machine crankshaft flywheel structure, which effectively solves the problem of high -speed precision press machine at low speed, without additional complex die stuck release device, and improves the use efficiency of equipment.

[0008] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0009] A high -speed precision press machine crankshaft flywheel structure, comprising a machine body, a crankshaft, a flywheel and a planetary transmission mechanism arranged between the flywheel and the crankshaft, the planetary transmission mechanism comprising a sun gear, a planet gear, a planet carrier and a ring gear, the planet gear is arranged on the planet carrier, the planet carrier is connected with the crankshaft, and the flywheel is fixedly connected with the sun gear.

[0010] Further, the high-speed precision press crankshaft flywheel structure, the gear ring is provided with a first brake for controlling rotation or fixing, and a first clutch is arranged between the planet carrier and the sun gear.

[0011] Further, the high-speed precision press crankshaft flywheel structure, a second clutch is arranged between the first clutch and the crankshaft, and a second brake is arranged on the crankshaft.

[0012] Further, the high-speed precision press crankshaft flywheel structure, a clutch brake is arranged between the first clutch and the crankshaft.

[0013] Further, the high-speed precision press crankshaft flywheel structure, the flywheel is provided with a rotating shaft, one end of the rotating shaft is fixedly connected with the sun gear, and the other end of the rotating shaft is rotatably connected with the machine body.

[0014] Further, the high-speed precision press crankshaft flywheel structure, the number of planet gears is two or more, each planet gear is uniformly distributed around the sun gear, each planet gear is meshed with the sun gear, and each planet gear is meshed with the gear ring.

[0015] Further, the high-speed precision press crankshaft flywheel structure, the planetary transmission mechanism satisfies a single-planet row motion equation: wherein is the rotating speed of the sun gear, is the speed of the gear ring, is the rotating speed of the planet carrier, is a planet characteristic parameter, and 4 / 3≤ ≤4.

[0016] Beneficial effects: the high-speed precision press crankshaft flywheel structure provided by the utility model has at least the following advantages compared with the prior art:

[0017] The speed range is widened, and the applicability is improved: during mold debugging, the rotating speed of the crankshaft can be reduced to prevent the mold from being stuck, without the need of additional devices, and the use efficiency is improved; during normal production, high-speed stamping can be realized, the application field is widened, and various machining processes can be adapted.

[0018] The transmission is optimized, and the stamping quality is improved: the plurality of planet gears are uniformly distributed and meshed with the sun gear and the gear ring, the bearing capacity is improved, the stamping force is dispersed, and the planet gears are prevented from being damaged. Meanwhile, the transmission stability is enhanced, the vibration noise is reduced, the transmission ratio is accurately controlled, the precision of the stamped part is improved, and the quality of the precision part is ensured.

[0019] The cost is reduced, and the economy is improved: compared with the servo driving scheme, the structure is simple, expensive equipment is not needed, and the manufacturing cost is reduced. The reform demand caused by the speed limitation is reduced, the use and maintenance costs are reduced, the high-speed precision press crankshaft flywheel structure is suitable for various tonnage presses, and the economic prospect is good.

[0020] Improve safety reliability: the brake on the gear ring and the crankshaft provides multiple brake protection, which can quickly brake the crankshaft in emergency situations to ensure personnel safety. Stable transmission and reliable braking reduce failures, extend equipment life, and reduce production risks. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The principle diagram of the high-speed precision press crankshaft flywheel structure is provided.

[0022] Reference numerals in the drawings:

[0023] 1, body;

[0024] 2, flywheel; 21, flywheel corresponding shaft;

[0025] 31, sun gear; 32, planetary gear; 33, gear ring; 34, planet carrier;

[0026] 41, first clutch; 411, first clutch corresponding output shaft;

[0027] 42, second clutch;

[0028] 5, crankshaft;

[0029] 61, first brake; 62, second brake. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical scheme and effect of the utility model more clear and definite, the utility model is further described in detail below. It should be understood that the specific embodiments described herein are only used to explain the utility model and do not limit the utility model.

[0031] Please refer to Figure 1 The utility model provides a kind of high-speed precision press crankshaft flywheel structure. The drawing is only used to explain the structure principle, not proportional with actual product. The "first", "second" and the like described in this paper are only different naming to similar structure to facilitate exposition, not to limit the present application.

[0032] A kind of high-speed precision press crankshaft flywheel structure, including body 1, crankshaft 5, flywheel 2, and the planetary transmission mechanism being arranged between flywheel and crankshaft, the planetary transmission mechanism includes sun gear 31, planetary gear 32, planet carrier 34 and gear ring 33, planetary gear is arranged on planet carrier, the planet carrier is connected with crankshaft, the flywheel is fixedly connected with sun gear. It can be observed from the drawing that the crankshaft is arranged on the body and is rotatably connected with the body. Since flywheel and crankshaft are provided with planetary transmission mechanism therebetween, the rotational speed of the crankshaft is conveniently adjusted.

[0033] The machine body is the machine body of the press. Since the high-speed precision press crankshaft flywheel structure is arranged on the press in actual application (rather than operating independently from the press), the utility model limits the technical feature of "machine body" (but does not limit the specific shape of the "machine body") in order to facilitate the description of the connection relationship between the crankshaft, the sun gear and the machine body.

[0034] Further, a first brake 61 is arranged on the ring gear for controlling the rotation or fixation of the ring gear. When the first brake is working, the ring gear is fixed; when the first brake is not working, the ring gear can rotate freely. A first clutch is arranged between the planet carrier and the sun gear. The significance of this arrangement is that the first brake controls the motion state of the ring gear, and the high-speed precision press can be switched between high-speed and low-speed modes. When the first brake works to fix the ring gear, according to the principle of planetary transmission, the flywheel transmits power through the sun gear to make the planet carrier (connected to the crankshaft) rotate at a speed of 1 / / the speed of the flywheel, realizing low-speed operation of the crankshaft and meeting the low-speed operation requirements such as mold debugging; when the first brake is not working and the ring gear rotates freely (i.e. idles), and the first clutch between the planet carrier and the sun gear is connected, the rotation of the flywheel and the sun can be transmitted to the planet carrier at the same speed, allowing the crankshaft to operate at high speed and adapt to normal stamping production. This arrangement enables the press to operate stably at different speeds, expanding the application range of the equipment.

[0035] The driving part of the first clutch is connected to the sun gear, and the driven part of the first clutch is connected to the planet carrier. Thus, when the first clutch is connected, the rotation of the flywheel and the sun can be transmitted to the planet carrier at the same speed.

[0036] Further, a second clutch 42 is arranged between the output shaft 411 corresponding to the first clutch 41 and the crankshaft 5, and a second brake 62 is arranged on the crankshaft. The arrangement of the second clutch provides an additional control node for power transmission. During the operation of the equipment, the second clutch can be selectively connected or disconnected according to the specific working conditions. By arranging the second brake, the crankshaft can be braked according to the specific working conditions in actual application.

[0037] In addition, a clutch brake (not shown in the figure) can also be arranged between the first clutch and the crankshaft. Since the clutch brake has the functions of clutching and braking, it can replace the above-mentioned second clutch and second brake.

[0038] Further, the planetary transmission mechanism satisfies the single-planet row motion equation: wherein is the speed of the sun gear, is the speed of the ring gear, is the speed of the planet carrier, is the planet characteristic parameter, and 4 / 3 ≤ ≤4. This setting is to meet the different working requirements of high-speed precision press, optimize the transmission ratio range. Suitable value can ensure that the speed reduction effect of the planet carrier is neither too large to cause power shortage, nor too small to meet the low-speed operation requirements; at high speed, it can also ensure the stability and efficiency of the constant speed transmission.

[0039] Further, the flywheel 2 is provided with a rotating shaft 21, one end of the rotating shaft is fixedly connected with the sun gear, and the other end is rotatably connected with the machine body. Specifically, a bearing (or bearing bush, not shown in the figure) is arranged between the rotating shaft and the machine body to realize the rotatable connection. This setting provides a reliable support structure for the flywheel. When the high-speed precision press is working, the kinetic energy stored in the flywheel can be continuously and accurately transmitted to the sun gear through this rigid connection, thereby driving the entire planetary transmission system. When the flywheel rotates at high speed, this connection mode can effectively constrain the motion trajectory of the flywheel, reduce vibration and shaking, and ensure the stable operation of the entire equipment.

[0040] Preferably, the number of planetary gears is two or more, each planetary gear is uniformly distributed around the sun gear, each planetary gear is meshed with the sun gear, and each planetary gear is meshed with the ring gear. This setting realizes that multiple planetary gears share the load, which can significantly improve the carrying capacity of the entire transmission system. When the high-speed precision press is working, the stamping process will generate a large force, and multiple planetary gears can disperse these forces to avoid damage to a single planetary gear due to excessive load.

[0041] For the sake of understanding, the working principle is briefly described as follows.

[0042] High-speed operation mode: when the press needs to operate at high speed, the first brake on the ring gear does not work, and the ring gear can rotate freely, while the first clutch between the planet carrier and the sun gear is connected. At this time, the flywheel is fixedly connected with the sun gear, and they rotate synchronously. Since the planet carrier and the sun gear are connected through the first clutch, the rotation of the flywheel is transmitted to the planet carrier at a constant speed through the sun gear, and the planet carrier transmits the power to the crankshaft through the first clutch and the second clutch, realizing the high-speed rotation of the crankshaft and meeting the speed requirements of normal stamping production.

[0043] Low-speed operation mode: in the working condition of low-speed operation such as mold debugging, the first brake works, and the ring gear is fixed on the machine body and cannot rotate. When the flywheel rotates, the power is transmitted to the planetary gear through the sun gear connected therewith. Since the ring gear is fixed, according to the single planetary row motion equation, the rotation speed of the planet carrier is reduced to 1 / / of the flywheel (sun gear). The planet carrier transmits the rotation speed and torque to the crankshaft through the first clutch and the second clutch, realizing the low-speed operation of the crankshaft and avoiding the mold from being stuck due to too low speed during mold debugging.

[0044] Braking mode: when braking is needed, the second brake acts on the crankshaft, directly stopping the crankshaft from rotating. At the same time, the first clutch between the carrier and the sun gear and the second clutch between the first clutch and the crankshaft are both disconnected, the flywheel idles and no longer transmits power to the crankshaft. If a clutch brake is used, it can simultaneously realize the functions of clutching and braking, rapidly cut off power transmission and brake the crankshaft, ensuring the safety of the equipment and the operator.

[0045] The above is only the preferred embodiment of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed in the preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present application still belong to the scope of the technical solution of the present application.

Claims

1. A high speed precision press crankshaft flywheel structure, comprising a machine body, a crankshaft and a flywheel, characterized in that: The planetary transmission mechanism is arranged between the flywheel and the crankshaft, and comprises a sun gear, a planet gear, a planet carrier and a ring gear, the planet gear is arranged on the planet carrier, the planet carrier is connected with the crankshaft, and the flywheel is fixedly connected with the sun gear.

2. The crankshaft flywheel structure of the high-speed precision press according to claim 1, characterized in that: The ring gear is provided with a first brake for controlling rotation or fixation thereof, and a first clutch is arranged between the planet carrier and the sun gear.

3. The crankshaft flywheel structure of the high-speed precision press according to claim 2, characterized in that: A second clutch is arranged between the first clutch and the crankshaft, and a second brake is arranged on the crankshaft.

4. The crankshaft flywheel structure of the high-speed precision press according to claim 2, characterized in that: The first clutch and the crankshaft are provided with a clutch brake.

5. The crankshaft flywheel structure of the high speed precision press according to claim 1, characterized in that: The flywheel is provided with a rotating shaft, one end of the rotating shaft is fixedly connected with the sun gear, and the other end of the rotating shaft is rotatably connected with the machine body.

6. The crankshaft flywheel structure of the high speed precision press according to claim 1, characterized in that: The number of the planet gears is two or more, each planet gear is uniformly distributed around the sun gear, each planet gear is meshed with the sun gear, and each planet gear is meshed with the ring gear.

7. The crankshaft flywheel structure of a high speed precision press according to any one of claims 1 to 6, characterized in that: The planetary transmission mechanism satisfies a single planetary row motion equation: wherein is the sun wheel rotational speed, is the gear ring speed, is the planetary carrier rotational speed, is a planetary characteristic parameter, and 4 / 3 ≤ ≤ 4.

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