阅读说明：本技术 一种超精设备振荡机构 (Super smart equipment oscillation mechanism ) 是由 陈仁波 孙振国 刘绿林 周华 王兵 谢志强 王德东 于 2019-10-21 设计创作，主要内容包括：本发明提供了一种超精设备振荡机构,其包括旋转驱动装置及同轴套设于该旋转驱动装置的旋转轴外部的振荡器座,还包括振幅调节组件及振荡器纵向销,其通过利用旋转驱动装置驱动旋转轴振幅调节组件同步旋转,通过振幅调节组件与振荡器纵向销的配合端部间断式接触,使振荡器纵向销在振荡器座内沿竖直方向往复定幅振荡,解决振荡机构稳定性不足的技术问题的同时,通过调节振幅组件与配合端部的接触距离及凸起部a的数量,实现振荡机构在振幅与振频上的可调。(The invention provides an oscillating mechanism of ultra-precision equipment, which comprises a rotary driving device, an oscillator seat coaxially sleeved outside a rotating shaft of the rotary driving device, an amplitude adjusting assembly and an oscillator longitudinal pin, wherein the amplitude adjusting assembly and the oscillator longitudinal pin are driven by the rotary driving device to synchronously rotate, and the oscillator longitudinal pin is enabled to reciprocate in the oscillator seat in a fixed amplitude manner through intermittent contact of the amplitude adjusting assembly and the matching end part of the oscillator longitudinal pin, so that the technical problem of insufficient stability of the oscillating mechanism is solved, and meanwhile, the adjustment of the oscillating mechanism on amplitude and oscillation frequency is realized by adjusting the contact distance between the amplitude assembly and the matching end part and the number of convex parts a.)

1. The utility model provides a super smart equipment oscillation mechanism, includes the external oscillator seat (2) of rotation axis (11) of this rotation driving device (1) is located to vertical rotation driving device (1) and coaxial cover that sets up, its characterized in that still includes:

an amplitude adjustment unit (3), which is mounted below the rotating shaft (11), and which rotates synchronously with the rotating shaft (11), wherein the amplitude adjustment unit (3) is mounted below the rotating shaft (11); and

the oscillator longitudinal pin (4) is coaxially arranged in the oscillator seat (2) and is positioned below the amplitude adjusting assembly (3), the oscillator longitudinal pin (4) comprises a working end part (41) and a matching end part (42) which are respectively arranged at two axial ends of the oscillator longitudinal pin, the working end part (41) and an object to be oscillated are always in interference fit, and the matching end part (42) is convexly provided with a convex part a (421) which is in intermittent interference fit with the amplitude adjusting assembly (3) along the circumferential direction of the matching end part;

the rotary driving device (1) drives the rotary shaft (11) and the amplitude adjusting assembly (3) to synchronously rotate, and the amplitude adjusting assembly (3) is in intermittent contact with the matching end part (42) of the oscillator longitudinal pin (4), so that the oscillator longitudinal pin (4) can reciprocate in the oscillator seat (2) along the vertical direction for amplitude-fixed oscillation.

2. The oscillation mechanism of a superfinishing apparatus according to claim 1, wherein the amplitude adjustment assembly (3) is a control part (31) with a fixed projection distance.

3. The oscillation mechanism of a superfinishing apparatus according to claim 1, wherein the amplitude adjustment assembly (3) is a control part (31) whose projecting distance is adjustable in a vertical direction.

4. The oscillating mechanism of the superfinishing equipment according to claim 2 or 3, further comprising an elastic connector (5), wherein the elastic connector (5) is coaxially sleeved outside the rotating shaft (11), and sequentially comprises a transition connection claw part (51) and a threaded part (52) from top to bottom along the axial direction of the elastic connector, the claw part (51) comprises a plurality of claws (511) which are annularly arranged at equal intervals along the axial circumference, an adjusting gap (512) exists between every two adjacent claws (511), and the diameter of the end part, away from the threaded part (52), of the claw part (51) is smaller than that of the end part, close to the threaded part (52).

5. The oscillation mechanism of a superfinishing apparatus according to claim 4, wherein the control portion (31) is a protrusion b extending outward from a lower end of the threaded portion (52) or a ball mounted on the lower end of the threaded portion (52) and rolling freely.

6. The oscillating mechanism of a superfinishing apparatus according to claim 4, wherein the lower end of the elastic connector (5) is provided with a mounting groove (50) at one side of the central axis thereof, the control part (31) is of a ball structure and comprises a ball (30) movably disposed in the mounting groove (50) and an adjusting screw (32) horizontally mounted on the elastic connector (5), and a tapered end (321) of the adjusting screw (32) penetrates into the mounting groove (50) and is located at one side above the ball (30).

7. The oscillation mechanism of a superfinishing apparatus according to claim 4, further comprising an elastic coupling nut (6), wherein the elastic coupling nut (6) is fittingly sleeved outside the claw portion (51), and a lower end portion thereof is threadedly fittingly coupled to the threaded portion (52).

8. The oscillation mechanism of the superfinishing equipment according to claim 4, further comprising an oscillator longitudinal sleeve (7) coaxially arranged between the oscillator longitudinal pin (4) and the oscillator seat (2), and an oscillator positioning pin (71) horizontally penetrating the oscillator longitudinal sleeve (7) and the oscillator longitudinal pin (4), wherein the oscillator longitudinal pin (4) is provided with a waist limiting groove (43) adapted to the oscillator positioning pin (71); and a bearing (8) is arranged between the elastic connector (5) and the oscillator longitudinal sleeve (7).

9. The oscillation mechanism of a superfinishing apparatus according to claim 8, wherein the center of the limit waist groove (43) is located on the axis of the oscillator longitudinal pin (4), and the clearance from the vertical direction of the oscillator positioning pin (71) is not less than the protrusion distance of the control part (31).

10. The oscillating mechanism of a superfinishing apparatus according to claim 1, wherein the oscillated object is placed under the oscillator longitudinal pin (4) and is provided with a restoring elastic restoring structure.

Technical Field

The invention relates to the technical field of oscillating mechanical structures on superfinishing equipment, in particular to an oscillating mechanism of superfinishing equipment.

Background

The existing oilstone oscillation mode commonly adopted in the superfinishing machine is that the rotation of a common alternating current motor is converted into the reciprocating oscillation motion of a swing mechanism through a space mechanism, although the change of the oscillation frequency can be realized by changing the rotating speed of the common alternating current motor, the structure is used for the output of a conversion mechanism, and the conversion mechanism causes the oscillation frequency and the oscillation amplitude which are actually output to have great deviation with the preset oscillation frequency and oscillation amplitude due to the relationship of inertia and a transmission path, so the oilstone oscillation mode limits the processing precision of the superfinishing machine and needs to be further improved.

For example, patent document No. CN201110296398.4 (hereinafter referred to as symmetric document 1) discloses an ultra-precision grinding oscillation mechanism, which includes an oscillation mechanism on an ultra-precision grinding machine tool, a sheave is coupled to two balance wheels between a left balance weight and a right balance weight, the sheave is of a two-piece symmetric structure and is fixed on a rotating shaft by screws, a driving wheel is mounted on the rotating shaft at both sides of the sheave and protrudes out of the shaft surface symmetrically, a transmission plate is coupled between the driving wheel and a ram, and the transmission plate converts the rotation of a motor into oscillation by the sheave transmission mechanism, so as to drive the ultra-precision oilstone to oscillate back and forth.

Although the above patent uses the driving wheel and the sheave to narrow the transmission path and reduce the influence of the inertia of the conversion mechanism on the oscillation frequency and amplitude of the actual output of the oscillation mechanism, the above patent still has the following technical problems:

1. when the driving wheel is matched with the groove on the grooved wheel, the driving wheel needs to be ensured to rotate freely in the groove, so that a matching gap is certainly formed, the superfinishing machine is a superfinishing device, and the machining precision of the superfinishing machine is limited by the existing matching gap;

2. the driving wheel is matched with the groove on the grooved wheel, the oilstone clamp can only be driven to oscillate along the guide of the groove, and the oscillation amplitude of the oilstone clamp cannot be adjusted.

Disclosure of Invention

In order to solve the problems, the invention provides an oscillation mechanism of a superfinishing device, which drives a rotating shaft to drive an amplitude adjusting assembly to rotate synchronously by using a rotary driving device, and the oscillation mechanism is directly in intermittent interference fit with a protruding part on a longitudinal pin of an oscillator, so that no fit clearance exists, the limitation of the fit clearance on the machining precision of a superfinishing machine is solved, and the machining precision of the superfinishing machine is improved.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a super smart equipment oscillation mechanism, includes the external oscillator seat of the rotation axis of vertical setting's rotary drive device and coaxial cover locating this rotary drive device, still includes:

an amplitude adjusting unit installed below the rotary shaft and rotating synchronously with the rotary shaft; and

the oscillator longitudinal pin is coaxially arranged in the oscillator seat and is positioned below the amplitude adjusting assembly, the oscillator longitudinal pin comprises a working end part and a matching end part which are respectively arranged at two axial ends of the oscillator longitudinal pin, the working end part and an object to be oscillated are always in contact with each other, and the matching end part is convexly provided with a protruding part a which is in intermittent contact with the amplitude adjusting assembly along the circumferential direction of the matching end part;

the rotary driving device drives the rotary shaft and the amplitude adjusting assembly to synchronously rotate, and the amplitude adjusting assembly is in intermittent contact with the matching end part of the longitudinal pin of the oscillator, so that the longitudinal pin of the oscillator can oscillate in the oscillator seat in a reciprocating and amplitude-fixed mode along the vertical direction.

As a modification, the amplitude adjustment assembly is a control part with a fixed projection distance.

As a modification, the amplitude adjustment assembly is a control part with a projection distance adjustable along the vertical direction.

As an improvement, the elastic connector is coaxially sleeved outside the rotating shaft and sequentially comprises a clamping claw part and a threaded part which are in transition connection from top to bottom along the axial direction of the elastic connector, the clamping claw part comprises a plurality of clamping claws which are annularly arranged along the axial circumference at equal intervals, an adjusting gap exists between every two adjacent clamping claws, and the diameter of the end part, far away from the threaded part, of each clamping claw part is smaller than that of the end part, close to the threaded part, of each clamping claw part.

In a refinement, the control portion is a control portion extending outward from a lower end of the threaded portion or a ball mounted on the lower end of the threaded portion and rolling freely.

As an improvement, a mounting groove is formed in one side of the central axis of the lower end portion of the elastic connector, the control portion is of a ball structure and comprises a ball movably arranged in the mounting groove and an adjusting screw horizontally arranged on the elastic connector, and a conical end portion of the adjusting screw penetrates into the mounting groove and is located on one side above the ball.

As an improvement, the clamping claw is characterized by further comprising an elastic connecting nut which is matched and sleeved on the outer side of the clamping claw part, and the lower end part of the elastic connecting nut is in threaded matching connection with the threaded part.

As an improvement, the device also comprises an oscillator longitudinal sleeve coaxially arranged between the oscillator longitudinal pin and the oscillator base and an oscillator positioning pin horizontally penetrating through the oscillator longitudinal sleeve and the oscillator longitudinal pin, wherein the oscillator longitudinal pin is provided with a limit waist groove matched with the oscillator positioning pin; and a bearing is arranged between the elastic connector and the oscillator longitudinal sleeve.

As an improvement, the center of the limit waist groove is positioned on the axis of the oscillator longitudinal pin, and the clearance between the limit waist groove and the oscillator positioning pin in the vertical direction is not less than the protrusion distance of the control part.

As an improvement, the object to be oscillated is placed below the longitudinal pin of the oscillator, and is provided with a reset elastic restoring structure.

The invention has the beneficial effects that:

(1) according to the invention, the rotary driving device is used for driving the rotary shaft to drive the amplitude adjusting assembly to synchronously rotate, and the amplitude adjusting assembly is directly in intermittent interference fit with the protruding part on the longitudinal pin of the oscillator, so that no fit clearance exists, the limit of the fit clearance on the machining precision of the superfinishing machine is avoided, and the machining precision of the superfinishing machine is improved;

(2) according to the invention, the amplitude adjusting assembly is set to be of a ball structure, and the distance between the ball and the protruding part on the longitudinal pin of the oscillator in interference fit is adjusted by using the adjusting screw, so that the adjustment of the oscillation amplitude of the oscillation mechanism is realized, the processing requirements and the processing precision are met, and the universality is stronger;

(3) the number of the convex parts a on the matching end part is adjusted, so that the contact frequency of the amplitude adjusting assembly and the convex parts a in the single-circle rotation process is adjusted to adjust the oscillation frequency of the longitudinal pin of the oscillator, the adjustment of the oscillation frequency of the oscillation mechanism is realized, the rotating speed of the alternating current motor is not required to be adjusted, and the requirements of more different oscillation frequencies can be met;

(4) according to the invention, through the conical structures of the elastic connector and the elastic connecting nut, when the elastic connector is connected with the rotating shaft, the elastic connector and the rotating shaft can be rapidly centered, the coaxiality of the elastic connector and the rotating shaft is ensured, and the influence on the amplitude and the vibration frequency of the oscillating mechanism caused by inconsistent coaxiality is avoided.

In conclusion, the invention has the advantages of stable amplitude vibration frequency, few vibration influence factors, adjustable amplitude vibration frequency and the like, and is particularly suitable for the technical field of vibration mechanical structures on superfinishing equipment.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a schematic diagram of the oscillating operation of the present invention;

FIG. 4 is an enlarged view of the structure at B in FIG. 3;

FIG. 5 is a schematic perspective view of a longitudinal pin of the oscillator of the present invention;

fig. 6 is a schematic structural diagram of an amplitude adjustment assembly according to embodiment 1 of the present invention;

fig. 7 is a schematic structural diagram of an amplitude adjustment assembly in embodiment 2 of the present invention;

FIG. 8 is a schematic sectional view showing the structure of the elastic connector in accordance with embodiment 3 of the present invention;

FIG. 9 is a perspective view of an elastic connector according to embodiment 3 of the present invention;

FIG. 10 is a diagram illustrating a fourth embodiment of the present invention;

FIG. 11 is an enlarged view of the structure at A in FIG. 10;

FIG. 12 is a first schematic structural diagram of a sixth embodiment of the present invention;

fig. 13 is a sixth structural schematic diagram of the embodiment of the invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.