CN219005684U - Eccentric wheel - Google Patents

Abstract

The utility model relates to an eccentric wheel, which comprises a balancing weight, a driving head and a mounting part, wherein the driving head is mounted on the balancing weight, a plurality of evenly distributed threaded holes are formed in the balancing weight, the mounting part is fixed on the driving head, the driving head and the mounting part are in a concentric state, the mounting part is provided with a mounting hole which is used for being connected with an output shaft of a motor, and the other end of the driving head is provided with a through hole which is used for fixedly mounting a polishing disc.

Description

Eccentric wheel

Technical Field

The present utility model relates to eccentrics.

Background

The polishing machine is mainly used for polishing burrs and weld flash on the surface of a workpiece, and can also be used for polishing rough-surface parts and the like. The polishing disk is driven by the motor to realize polishing treatment, the polishing disk is unstable in rotation at high speed, the hand-held polishing machine is unstable in operation, and the conditions of hand-tingling and vibration and even hand-off occur easily.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provides an eccentric wheel.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: including balancing weight, driving head and installation department, the driving head is installed on the balancing weight, be equipped with a plurality of evenly distributed's screw hole on the balancing weight, the installation department is fixed on the driving head, just the driving head with the installation department is concentric state, be equipped with the mounting hole on the installation department, the mounting hole is used for with motor output shaft, just the driving head other end is equipped with the through-hole, the through-hole is used for fixed mounting polishing dish, install two bearings in the mounting hole, install an eccentric shaft in the bearing.

Preferably, the balancing weight is semicircular, and the driving head is cylindrical.

Preferably, the mounting part is a cylinder, and the outer surface of the mounting part is machined into two planes by a milling machine so as to be convenient to mount on the motor.

Preferably, the through hole and the driving head are in an eccentric state.

Preferably, the balancing weight is detachably mounted on the driving head.

Preferably, the mounting portion is welded to the driving head.

Preferably, the bearing is a radial ball bearing.

The utility model has the advantages that:

according to the eccentric wheel, the balancing weight is installed on the driving head by using the screw, and the balancing weight is fixedly installed on the driving block, so that the balancing weight can be offset with the centrifugal force of the rotation of the polishing disk in the rotation process, the polishing is more stable, excessive shaking is prevented, great force is required for a user to hold, and the conditions of hand numbness and hand dislocation are avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the technical solutions related to the embodiments with respect to the accompanying drawings, and it is obvious that the drawings described in this specification are only some possible embodiments of the present utility model, and other drawings identical or similar to the technical solutions of the present utility model can be obtained according to the following drawings without any inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a first perspective of an eccentric of the present utility model;

FIG. 2 is a second perspective view of the eccentric of the present utility model;

FIG. 3 is a schematic side view of the eccentric wheel of the present utility model

Fig. 4 is a schematic cross-sectional view of the eccentric of the present utility model.

Reference numerals and components referred to in the drawings are as follows:

1-balancing weight, 11-threaded hole, 2-driving head, 21-through hole, 3-installation department, 31-mounting hole, 4-eccentric shaft, 5-bearing.

Description of the embodiments

The technical solutions described in the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, and it is obvious that the embodiments described in the present specification are only some of the possible technical solutions of the present utility model, and other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without any inventive effort should be considered as falling within the scope of protection of the present utility model.

It should be noted that the descriptions of "first", "second", etc. used in the embodiments of the present utility model are used for descriptive purposes only, and should not be construed as indicating or implying any particular number of features or characteristics of the present utility model, such that the features of the present utility model that are defined in the embodiments herein may be indicative of at least one of such defined features or characteristics.

The technical solutions of the embodiments of the present utility model described in the present specification may be combined with each other, but it is necessary that the technical solutions are based on the fact that those skilled in the art can implement the embodiments, and when the technical solutions are combined with each other or cannot be implemented, the technical solutions should be considered as not being combined.

Referring to fig. 1-4, the eccentric wheel of the utility model comprises a balancing weight 1, a driving head 2 and a mounting part 3, wherein the driving head 2 is mounted on the balancing weight 1, the balancing weight 1 is semicircular, the driving head 2 is cylindrical, a plurality of evenly distributed threaded holes 11 are formed in the balancing weight 1, in this embodiment, the number of the threaded holes 11 is three, the balancing weight 1 and the driving head 2 are fixed by mounting screws in the threaded holes 11, the mounting part 3 is fixed on the driving head 2, the mounting part 3 is cylindrical, two planes are machined on the outer surface of the mounting part 3 through a milling machine so as to be convenient to mount on a motor, the driving head 2 and the mounting part 3 are in a concentric state, a mounting hole 31 is formed in the mounting part 3, the mounting hole 31 is used for being connected with an output shaft of the motor, a through hole 21 is formed in the other end of the driving head 2, the through hole 21 is used for fixing a mounting disc, and the through hole 21 and the driving head 2 are in an eccentric state.

The function of replacing the balancing weight 1 can be achieved by taking down the screws, namely, the balancing weight 1 is detachably mounted on the driving head 2, and the mounting part 3 is used for being welded and fixed on the driving head 2.

Two bearings 5 are installed in the installation hole 31, an eccentric shaft 4 is installed in the bearing 5, and the bearing 5 is a radial ball bearing.

The balancing weight 1 and the mounting part 3 are both made of zinc alloy materials, and the eccentric shaft 4 is made of 40 Cr.

The eccentric amount of the balancing weight 1 is as follows: 4mm, 6mm, 7.5mm, centrifugal force can be adjusted by changing the balancing weights 1 with different eccentric amounts.

When the polishing device is used, the mounting part 3 is mounted on the output shaft of the motor through the mounting hole 31, the motor is started to drive the mounting part 3 to rotate, and then the driving head 2 is driven to rotate, so that polishing and grinding are realized by rotating the polishing disc mounted in the through hole 21, and the balancing weight 1 can be offset with the centrifugal force of the polishing disc rotation in the rotating process due to the fact that the balancing weight 1 is fixedly mounted on the driving block 1, so that the polishing is more stable.

According to the eccentric wheel, the balancing weight 1 is installed by using the screw on the driving head 2, and the balancing weight 1 can be replaced by taking down the screw, and because the balancing weight 1 is fixedly installed on the driving block 1, the balancing weight 1 can offset the centrifugal force of the rotation of the polishing disc in the rotation process, so that the polishing process is more stable, excessive shaking is prevented, great force is required for a user to hold, and the conditions of hand-out and hand-out are avoided.

The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and additions to the present utility model may be made by those skilled in the art without departing from the principles of the present utility model and such modifications and additions are to be considered as well as within the scope of the present utility model.

Claims (7)

1. Eccentric wheel, its characterized in that: including balancing weight (1), driving head (2) and installation department (3), driving head (2) are installed on balancing weight (1), be equipped with a plurality of evenly distributed screw hole (11) on balancing weight (1), installation department (3) are fixed on driving head (2), just driving head (2) with installation department (3) are concentric state, be equipped with mounting hole (31) on installation department (3), mounting hole (31) are used for with motor output shaft, just driving head (2) other end is equipped with through-hole (21), through-hole (21) are used for fixed mounting polishing dish, install two bearings (5) in mounting hole (31), install an eccentric shaft (4) in bearing (5).

2. The eccentric as in claim 1, wherein: the balancing weight (1) is semicircular, and the driving head (2) is cylindrical.

3. The eccentric as in claim 2, wherein: the installation part (3) is a cylinder, and two planes are machined on the outer surface of the installation part (3) through a milling machine so as to be convenient to install on the motor.

4. An eccentric as in claim 3, wherein: the through hole (21) and the driving head (2) are in an eccentric state.

5. The eccentric as in claim 4, wherein: the balancing weight (1) is detachably arranged on the driving head (2).

6. The eccentric as in claim 5, wherein: the mounting part (3) is used for being welded and fixed on the driving head (2).

7. The eccentric as in claim 6, wherein: the bearing (5) is a radial ball bearing.

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