Automatic balancing mechanism for crank oscillating bar

Abstract

An automatic balancing mechanism for a crank swing rod comprises a main shaft, the main shaft is in transmission connection with a crank disc, a sliding groove is formed in the center of the crank disc, a sliding block is assembled in the sliding groove, one end of the sliding block is fixedly connected with a stroke shaft, the upper end of the swing rod is assembled on the stroke shaft, a threaded rod is assembled in the sliding groove, the threaded rod is in threaded connection with the sliding block, and first racks are installed on the two sides of the sliding block. A mounting hole is formed in the slider and chute crank disc, and a gear meshed with the first rack is assembled in the mounting hole; clamping grooves are formed in the two sides of the sliding block, balancing weights are assembled in the clamping grooves, and a second rack meshed with the gear is installed on one side of the configuration block. The crank oscillating bar mechanism is used for solving the problems that the crank oscillating bar mechanism of the gear shaping machine is unbalanced and eccentric in movement, so that machining of a machine tool is unstable, and centrifugal deflection occurs.

Description

TECHNICAL FIELD

[0001] The utility model relates to a crank swing rod automatic balancing mechanism. BACKGROUND

[0002] The crank swing rod mechanism exists unbalanced eccentricity in movement, can cause the change of the stress of the movement mechanism. When applied to the gear shaping machine, it can cause the unstable machining of the machine tool and the eccentric swing. SUMMARY

[0003] The utility model discloses a crank swing rod automatic balancing mechanism, which is used to solve the problems of unbalanced eccentricity of the crank swing rod mechanism of the gear shaping machine in movement, unstable machining of the machine tool and eccentric swing.

[0004] In order to solve the above problems, the technical scheme of the utility model is as follows:

[0005] A crank swing rod automatic balancing mechanism, comprising a main shaft, the main shaft is in transmission connection with a crank disc, a sliding slot is arranged in the center of the crank disc, a sliding block is assembled in the sliding slot, one end of the sliding block is fixedly connected with a stroke shaft, the upper end of a swing rod is assembled on the stroke shaft, a screw rod is assembled in the sliding slot, the screw rod is in threaded connection with the sliding block, and a first rack is installed on the two sides of the sliding block; an installation hole is arranged on the sliding block sliding slot crank disc, a gear meshing with the first rack is assembled in the installation hole; a clamping groove is arranged on the two sides of the sliding block, and a counterweight block is assembled in the clamping groove; a second rack meshing with the gear is installed on one side of the counterweight block.

[0006] A counterweight cover plate is installed on the counterweight block.

[0007] The main shaft axis and the gear axis are on the same plane.

[0008] A plane thrust bearing is arranged between the screw rod end nut and the crank disc.

[0009] The utility model has the advantages that the relative position of the counterweight block and the stroke shaft to the main shaft axis is fine-tuned through the screw rod, the weight on the two sides of the main shaft is relatively balanced, the machining of the machine tool is stable, and the eccentric swing does not occur, and the mechanism structure is simple, easy to process and manufacture. BRIEF DESCRIPTION OF DRAWINGS

[0010] The utility model will be further described below in combination with the drawings:

[0011] Figure 1 It is the three-dimensional structure schematic view of the utility model,

[0012] Figure 2 It is the sectional structure schematic view of the utility model,

[0013] Figure 3 It is the sectional structure schematic view of the utility model,

[0014] Figure 4 This is a schematic diagram of the cross-sectional structure of the utility model.

[0015] Figure 5 It is a schematic diagram of the three-dimensional structure of the utility model.

[0016] In the figure: main shaft 1, crank plate 2, screw 3, stroke shaft 4, rocker arm 5, counterweight 6, gear 7, second rack 8, first rack 9, slider 10, counterweight cover 11, plane thrust bearing 12. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] A crank-rocker automatic balancing mechanism includes a main shaft 1, which is in transmission connection with a crank disk 2. The main shaft 1 drives the crank disk 2 to rotate. A dovetail-shaped slide groove is provided in the center of the crank disk 2. A slider 10 and a screw 3 are installed in the slide groove. One end of the slider 10 is fixedly connected to the stroke shaft 4. The upper end of the rocker 5 is installed on the stroke shaft 4. The screw 3 is threadedly connected to the slider 10. A first rack 9 is installed on both sides of the slider 10; mounting holes are provided on the crank disk 2 on both sides of the slide groove, and gears 7 meshing with the first rack 9 are installed in the mounting holes; slots are provided on both sides of the slider 10, and a counterweight block 6 is installed in the slot. The counterweight block 6 can slide in the slot, and a second rack 8 meshing with the gear 7 is installed on one side of the configuration block. When the crank rocker 5 mechanism of the gear shaping machine is unbalanced, the screw 3 can be rotated, and the screw 3 drives the slider 10 to move, and the slider 10 moves with the stroke shaft 4 and the rocker 5. At the same time, during the movement of the slider 10, the slider 10 drives the two counterweights 6 to move through the gears 7 on both sides, thereby adjusting the counterweights on both sides of the main shaft 1 to achieve fine-tuning of the imbalance of the crank rocker 5 mechanism.

[0019] A counterweight cover plate 11 is mounted on the counterweight block 6. When a weight error occurs during the manufacture of the counterweight block 6 or the gear 7, the counterweight cover plate 11 can be removed and the weight of the counterweight cover plate 11 can be fine-tuned by milling or grinding to compensate for the weight error.

[0020] The axis of the main shaft 1 and the axis of the gear 7 are in the same plane. In this way, the adjustment of the counterweight does not need to take the weight of the gear 7 into account, which facilitates the calculation of the counterweight.

[0021] Plane thrust bearings 12 are provided between the nuts at both ends of the screw and the crank plate 2, making the screw rotation easier.

[0022] The contents described in the embodiments of this specification are merely an enumeration of the implementation forms of the utility model concept. The protection scope of the utility model should not be regarded as limited to the specific forms described in the embodiments. The protection scope of the utility model also extends to equivalent technical means that can be thought of by those skilled in the art based on the concept of the utility model.

Claims

1. A crank rocker automatic balancing mechanism, comprising a main shaft (1), the main shaft (1) being in driving connection with a crank plate (2), characterized in that: A chute is provided at the center of the crank disk (2), and a slider (10) and a screw (3) are installed in the chute. One end of the slider (10) is fixedly connected to the stroke shaft (4), and the upper end of the rocker (5) is installed on the stroke shaft (4). The screw (3) is threadedly connected to the slider (10), and a first rack (9) is installed on both sides of the slider (10); mounting holes are provided on the crank disk (2) on both sides of the chute, and gears (7) meshing with the first rack (9) are installed in the mounting holes; slots are provided on both sides of the slider (10), and a counterweight (6) is installed in the slots. A second rack (8) meshing with the gear (7) is installed on one side of the configuration block.

2. The crank rocker automatic balancing mechanism according to claim 1, characterized in that: A counterweight cover plate (11) is mounted on the counterweight block (6).

3. The crank rocker automatic balancing mechanism according to claim 1, characterized in that: The axis of the main shaft (1) and the axis of the gear (7) are on the same plane.

4. The crank rocker automatic balancing mechanism according to claim 1, characterized in that: Plane thrust bearings (12) are provided between the nuts at both ends of the screw and the crank plate (2).

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