Cushioning universal star pivot driver

Abstract

The utility model discloses a cushioning universal star pivot driver which is characterized in that the cushioning universal star pivot driver comprises an external driving shifting fork, and a driving ring of the external driving shifting fork is provided with a first roller connecting part and a second roller connecting part; the first roller connecting part and the second roller connecting part are reversely and symmetrically arranged; a first buffer structure is arranged on a first contact surface of the first roller connecting part; a second buffer structure is arranged on a second contact surface of the second roller connecting part; a central nylon driving structure is arranged on the inner side of a driving ring of the external driving shifting fork, and a first mounting convex part and a second mounting convex part are arranged on the inner side of the driving ring; the central nylon driving structure is provided with a first mounting concave part corresponding to the first mounting convex part, and the first mounting concave part and the first mounting convex part are mounted and matched; the central nylon driving structure is provided with a second mounting concave part corresponding to the second mounting convex part, and the second mounting concave part and the second mounting convex part are mounted and matched; a first vibration damping spring is arranged at the contact position of the first mounting convex part and the first mounting concave part; and a second vibration damping spring is arranged at the contact position of the second mounting convex part and the second mounting concave part. By installing the buffering rubber pad and arranging the vibration buffering spring, impact force can be buffered, vibration energy can be absorbed and dispersed, and vibration lines on the roller surface are effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric spark machining technical field, concretely relates to a kind of shock-absorbing universal star pivot driver. BACKGROUND

[0002] The commonly used driver of Waldrich EDT has two driving forms of fork type driver and universal coupling type driver.The fork type driver has certain disadvantages in isolating vibration, and the fork type driver has relatively stable connection mode due to relatively simple structure. When the fork type driver is subjected to impact load, the fork and the pawl are in hard contact, and the structure cannot disperse or absorb vibration energy, thereby causing the impact to be transmitted to the rotating roll to cause the uniformity of the rotation of the roll, and the roll surface is prone to vibration marks. The fork type driver is fixed at the end of the roll due to the stable structure, and lacks the ability to drive the rotational axis deviation in the height direction of the roll in the radial direction. When the center of the roll deviates relative to the machining center of the EDT device, the fork type driver lacks the height adjustment capability, so that the driving torque of one side of the fork is greater than that of the other side during the weekly rotation of the fork, which causes the roll to exist in the process of climbing upward along the support in the rotation process, and the roll falls back due to the gravity of the roll being greater than the friction force when the roll climbs to a certain height, which disturbs the stability of the uniform rotation of the roll, and is prone to vibration marks on the roll surface.

[0003] The universal coupling type driver has strong angular compensation capability, and can allow a large angular deviation between the two connected shafts. Generally, the included angle between the two axes is between 5° and 45° or even larger, which makes it have relatively low requirements for the centering accuracy of the roll, reduces the damage to the equipment caused by vibration and impact, and can adapt to the working condition that there is a certain offset between the center line of the roll and the machining center line of the EDT device, and still ensures the uniform and effective transmission of power. However, the universal coupling type driver has non-uniform speed. In the case that there is an included angle between the input shaft and the output shaft of a single universal joint, the angular velocities of the two shafts are not equal, that is, there is non-uniform speed. This will have an impact on the application scenarios that require high roughness of the roll surface, and it is necessary to use multiple universal joints or adopt special design to minimize the impact of non-uniform speed.

[0004] The universal coupling type driver has a large size and weight due to the complex structure, which causes great difficulty in roll loading and unloading during daily maintenance and use, and the accuracy and response speed are limited. The universal coupling has certain elasticity and hysteresis when transmitting power, which will cause the accuracy and response speed to decrease, and cannot meet the application scenarios that require high accuracy and response speed in some low roughness requirements of the roll. UTILITY MODEL CONTENTS

[0005] In order to overcome the above-mentioned defects of the prior art, the purpose of the utility model is to provide a shock-absorbing universal star pivot driver.

[0006] To achieve the purpose of the utility model, the technical scheme adopted is:

[0007] A slow shock universal star pivot driver, comprising:

[0008] An external driving pull fork, the driving ring of the external driving pull fork is provided with a first roll connecting part and a second roll connecting part;

[0009] The first roll connecting part and the second roll connecting part are reversely symmetrically arranged;

[0010] A first buffer structure is arranged on the first contact surface of the first roll connecting part;

[0011] A second buffer structure is arranged on the second contact surface of the second roll connecting part;

[0012] A central nylon driving structure is arranged in the inner side of the driving ring of the external driving pull fork, the inner side of the driving ring is provided with a first mounting convex part and a second mounting convex part;

[0013] The central nylon driving structure is provided with a first mounting recess corresponding to the first mounting convex part, and the first mounting convex part is mounted and matched;

[0014] The central nylon driving structure is provided with a second mounting recess corresponding to the second mounting convex part, and the second mounting convex part is mounted and matched;

[0015] A first shock absorbing spring is arranged at the contact position of the first mounting convex part and the first mounting recess;

[0016] A second shock absorbing spring is arranged at the contact position of the second mounting convex part and the second mounting recess.

[0017] In one preferred embodiment of the utility model, the first buffer structure is a first buffer rubber pad.

[0018] In one preferred embodiment of the utility model, the second buffer structure is a second buffer rubber pad.

[0019] In one preferred embodiment of the utility model, the first shock absorbing spring and the second shock absorbing spring are symmetrically arranged.

[0020] In one preferred embodiment of the utility model, the first mounting convex part and the second mounting convex part are asymmetrically arranged.

[0021] In one preferred embodiment of the utility model, the central nylon driving structure is provided with a driving hole in the middle part.

[0022] The utility model has the advantages that:

[0023] By installing the buffer rubber pad and arranging the buffer spring, the impact force can be buffered, the vibration energy can be absorbed and dispersed, the generation of the roll surface vibration marks can be effectively reduced, the buffer rubber pad is arranged in a targeted manner, the power transmission lagging condition can be reduced, the power transmission precision and response speed are improved by matching the center nylon driving characteristics, and the application scene requirements of the high-precision and high-response speed of the roll are met; the center nylon driving is designed as an adjustable structure, the position and angle can be adaptively adjusted, the driving torques on both sides are balanced as much as possible when the external driving yoke is rotated and driven, the roll is endowed with the ability of radial height adjustment and rotation stability maintenance; the external structure of the universal coupling is simplified and lightened, the size and weight are reduced, and the daily maintenance and roll loading and unloading difficulty are reduced; different sizes of the center nylon driving can be replaced to adapt to different sizes of the roll, and the universality of the driver is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The structure of the utility model Figure One .

[0025] Figure 2 The structure of the utility model Figure Two .

[0026] Figure 3 The structure of the utility model Figure Three . DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the present application more clear and obvious, the present application is further described in detail below by means of drawings and examples. However, it should be understood that the specific examples described herein are only used to explain the present application and are not used to limit the scope of the present application. In addition, in the following structure, the description of the known structure and technology is omitted to avoid unnecessary confusion of the concept of the present application.

[0028] In the description of the present application, it should be pointed out that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, "first" and "second" are only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0029] As Figures 1-3 shown in a kind of shock-absorbing universal star pivot driver, including external driving yoke 1, first roll connecting part 102 and second roll connecting part 103 are provided on the drive ring 101 of external driving yoke 1.

[0030] The first roller connecting part 102 and the second roller connecting part 103 are reversely symmetrically arranged, a first buffer structure 31 is arranged on the first contact surface of the first roller connecting part 102, and the first buffer structure 31 is a first buffer rubber pad.

[0031] A second buffer structure 32 is arranged on the second contact surface of the second roller connecting part 103, and the second buffer structure 32 is a second buffer rubber pad.

[0032] A center nylon driving structure 2 is arranged in the inside of the driving ring of the external driving yoke 1, and a driving hole 23 is arranged in the middle of the center nylon driving structure 2.

[0033] The inside of the driving ring is provided with a first mounting protrusion 11 and a second mounting protrusion 12.

[0034] The center nylon driving structure 2 is provided with a first mounting recess 21 corresponding to the first mounting protrusion 11, and the first mounting protrusion 11 is mounted and matched with the first mounting recess 21.

[0035] A first vibration damping spring 41 is arranged at the contact position of the first mounting protrusion 11 and the first mounting recess 21.

[0036] The center nylon driving structure 2 is provided with a second mounting recess 22 corresponding to the second mounting protrusion 12, and the second mounting protrusion 12 is mounted and matched with the second mounting recess 22.

[0037] A second vibration damping spring 42 is arranged at the contact position of the second mounting protrusion 12 and the second mounting recess 22.

[0038] The first vibration damping spring 41 and the second vibration damping spring 42 are symmetrically arranged, and the first mounting protrusion 11 and the second mounting protrusion 12 are asymmetrically arranged.

[0039] When subjected to impact load, the buffer rubber pad first contacts, buffers part of the impact force by relying on its elastic deformation, and realizes preliminary vibration damping.

[0040] At the key stress point of the yoke structure, the connection area of the center nylon driving and the external driving yoke is reasonably arranged with vibration damping springs, the original rigid contact is changed into elastic contact, when the vibration energy is transmitted, the vibration damping springs absorb and disperse the energy by stretching and contracting, avoid the vibration directly transmitted to the roller, and reduce the generation of roll surface vibration marks.

[0041] At the same time, the buffer rubber pad arranged in the transmission chain reduces the power transmission lag caused by factors such as elasticity and gap at the key power transmission contact surface, combines the accurate guidance and good transmission stability of the center nylon driving, improves the power transmission accuracy and response speed, to adapt to the high demand of low roughness requirement roller on accuracy and response speed.

[0042] The center nylon drive has certain axial and radial adjustable functions. When the center of the roller deviates from the machining center of the EDT device, the center nylon drive self-adapts to adjust its position and angle within a certain range, uses its good toughness and certain deformation capacity to keep the driving torque of the external driving yoke balanced during the rotation driving process, maintains the stability of the uniform rotation of the roller, and reduces the appearance of roller surface vibration marks.

[0043] Meanwhile, the external structure design of the universal coupling is simplified and lightened. The originally complex and large shell structure components are replaced by the external driving yoke part, the core transmission function part is retained, the size is reduced, the weight is reduced, the influence of the different speed is reduced, and the application scene with high roughness requirement of the roller surface is better adapted.

[0044] The relative convenience of the connection between the external driving yoke and the roller optimizes the overall assembly and disassembly process, reduces the difficulty of daily maintenance and roller loading and unloading, uses different sizes of center nylon drives to adapt to different sizes of rollers, improves the universality of the drive, and overcomes related problems caused by complex structure.

[0045] The above shows and describes the basic principles and main features of the invention and the advantages of the invention.

[0046] Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A cushioned gimbal spider driver, comprising: The application relates to a driving puller, which comprises the following parts: an external driving puller, a first roller connecting part and a second roller connecting part are arranged on the driving ring of the external driving puller; the first roller connecting part and the second roller connecting part are arranged in reverse symmetry; a first buffer structure is arranged on the first contact surface of the first roller connecting part; a second buffer structure is arranged on the second contact surface of the second roller connecting part; a central nylon driving structure is arranged in the inside of the driving ring of the external driving puller, and the inside of the driving ring is provided with a first mounting convex part and a second mounting convex part; the central nylon driving structure is provided with a first mounting recess part corresponding to the first mounting convex part, and the first mounting convex part is mounted and matched with the first mounting recess part; the central nylon driving structure is provided with a second mounting recess part corresponding to the second mounting convex part, and the second mounting convex part is mounted and matched with the second mounting recess part; a first vibration damping spring is arranged at the contact position of the first mounting convex part and the first mounting recess part; a second vibration damping spring is arranged at the contact position of the second mounting convex part and the second mounting recess part.

2. A cushioned universal star hub driver as in claim 1, wherein, The first buffer structure is a first buffer rubber pad.

3. A cushioned universal star pivot driver as in claim 1, wherein, The second buffer structure is a second buffer rubber pad.

4. A cushioned universal star pivot driver as in claim 1, wherein, The first vibration damping spring and the second vibration damping spring are arranged in symmetry.

5. A cushioned universal star pivot driver as in claim 1, wherein, The first mounting convex part and the second mounting convex part are arranged in asymmetry.

6. A cushioned universal star hub driver as in claim 1, wherein, A driving hole is arranged in the middle of the central nylon driving structure.

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