Balancing head with reset function

Abstract

A balancing head with reset function, comprising a balancing module and a reset module connected therewith; the balancing module comprises a drive motor with two motors built-in, two sleeves, two counterweights and two housings, a sleeve is installed on the upper and lower shafts of the drive motor, a counterweight is fixed on each sleeve, the counterweight and sleeve on each side are arranged in a housing, and the housing is fixed on the drive motor; during balancing, the drive motor drives the two counterweights to form a correction vector equal in size and opposite in direction to the unbalance vector at a certain position and at a certain angle, thereby completing unbalance correction; the reset module comprises two reset switches embedded in the recesses of the counterweights; the black box problem and the problem of unbalance fluctuation due to the initial position can be effectively solved, and the stability of the balancing head is improved.

Description

Technical Field

[0001] This invention belongs to the field of dynamic balancing technology, and specifically relates to a balancing head with a reset function. Background Technology

[0002] With the advancement of science and technology, precision and ultra-precision machining hold an irreplaceable position in many fields. Grinding is a crucial means of improving the accuracy and quality of machined materials, making it the primary method for precision and ultra-precision machining. However, unbalanced vibrations during grinding have a significant impact on the accuracy and quality of the machined materials. Therefore, it is often necessary to introduce a dynamic balancing head into the grinding machine to correct the imbalance during the grinding process. Existing balancing head structures based on trial-and-error methods are simple and efficient, but this method suffers from a black box problem, making stability difficult to guarantee. During the balancing process, the initial position of the counterweight often causes significant fluctuations in the amount of unbalanced vibration. Therefore, it is necessary to design a balancing head structure that improves the stability of this method to address the black box and stability issues. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, the present invention aims to provide a balance head with a counterweight reset function, which can effectively solve the black box problem and the problem of fluctuation due to initial position imbalance, and improve the stability of the balance head.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A balancing head with a reset function includes a balancing module and a reset module connected thereto. The balancing module includes a drive motor 1 with two built-in motors, two sleeves 2, two counterweights 3, and two housings 5. A sleeve 2 is installed on the upper and lower shafts of the drive motor 1, and a counterweight 3 is fixed on each sleeve 2. The counterweights 3 and sleeves 2 on each side are arranged in a housing 5, and the housing 5 is fixed to the drive motor 1. During the balancing process, the drive motor 1 drives the two counterweights 3 to form a correction vector that is equal in magnitude and opposite in direction to the unbalance vector at a certain position and a certain angle, thereby completing the unbalance correction.

[0006] The reset module includes two reset switches, namely a first reset switch 4 and a second reset switch 8. The first reset switch 4 or the second reset switch 8 is embedded in the groove of the counterweight block 3. The first reset switch 4 and the second reset switch 8 have the same structure, including a base plate 11. One end of the base plate 11 is connected to the movable plate 10. The other end of the movable plate 10 is correspondingly engaged with the contact 9. The contact 9 is connected to the base plate 11. A spring 6 is connected between the lower middle part of the movable plate 10 and the base plate 11. A rod 7 is connected to the upper middle part of the movable plate 10. The end of the rod 7 is engaged with the corresponding groove of the housing 5.

[0007] The initial position of the counterweight 3 is fixed by the reset switch and the groove on the sleeve 2, and the initial included angle between the two counterweights 3 is 120°. When the unbalance correction action is performed, the counterweight 3 rotates, causing the rod 7 on one side to slide out of the groove on the sleeve 2. The spring 6 on the first reset switch 4 on that side is compressed, the movable plate 10 and the contact 9 come into contact, and the reset circuit on that side is connected. However, since the second reset switch 8 on the other side of the control system is not activated, the first reset switch 4 does not work at this time, so that the balance head can complete the unbalance correction normally.

[0008] When it is necessary to rebalance the rotor equipment, a reset operation is required. First, the second reset switch 8 is activated in the reset circuit. At this time, since the counterweight 3 is not in the initial position, the first reset switch 4 is in the closed state under the pressure of the rod 7. The drive motor 1 makes the counterweight 3 rotate continuously until the rod 7 slides into the groove of the sleeve 2, which disconnects the reset circuit, and the counterweight 3 returns to the initial position and stops moving, thus completing the reset.

[0009] The drive motor 1 is a piezoelectric motor.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0011] This invention can effectively solve the black box problem and the problem of initial position imbalance fluctuation in the trial-and-error balancing method. The invention adopts the form of embedding a reset switch on the counterweight, which can restore the initial position of the counterweight without affecting the dynamic balancing process. The structure of the trial-and-error method combined with the reset switch makes the initial balance vector formed by the two counterweights more universal and improves the stability of the balancing head. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention.

[0013] Figure 2 This is a schematic diagram of the reset switch assembly of the present invention.

[0014] Figure 3 This is a schematic diagram of the reset switch structure of the present invention.

[0015] Figure 4 This is a schematic diagram of the reset circuit of the present invention. Detailed Implementation

[0016] The invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0017] like Figure 1As shown, a balancing head with a reset function includes a balancing module and a reset module connected thereto. The balancing module includes a drive motor 1 with two built-in motors, two sleeves 2, two counterweights 3, and two housings 5. A sleeve 2 is installed on the upper and lower shafts of the drive motor 1 with fastening screws. Each sleeve 2 is fixed with a counterweight 3 for balancing by a set screw. The counterweights 3 and sleeves 2 on each side are set in a housing 5, and the housing 5 is fixed to the drive motor 1. During the balancing process, the drive motor 1 drives the two counterweights 3 to form a correction vector that is equal in magnitude and opposite in direction to the unbalance vector at a certain position and a certain angle, thereby completing the unbalance correction.

[0018] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, the reset module includes two reset switches, namely a first reset switch 4 and a second reset switch 8. The first reset switch 4 or the second reset switch 8 is embedded in the groove of the counterweight 3 by fastening screws. The first reset switch 4 and the second reset switch 8 have the same structure, including a base plate 11. One end of the base plate 11 is connected to a movable plate 10, and the other end of the movable plate 10 corresponds to a contact 9. The contact 9 is connected to the base plate 11. A spring 6 is connected between the lower middle part of the movable plate 10 and the base plate 11. A rod 7 is connected to the upper middle part of the movable plate 10, and the end of the rod 7 mates with a corresponding groove in the housing 5. When installing the sleeve 2, attention should be paid to the groove on it mates with the reset switch. The reset switch and the groove on the sleeve 2 fix the initial position of the counterweight 3, and the initial included angle between the two counterweights 3 is 120°. When performing the imbalance correction action, due to the counterweight... When block 3 rotates, the rod 7 on one side slides out of the groove of sleeve 2, the spring 6 on the first reset switch 4 on that side is compressed, the movable plate 10 and the contact 9 come into contact, and the reset circuit on that side is connected; however, since the second reset switch 8 on the other side of the control system is not activated, the first reset switch 4 does not work at this time, allowing the balance head to complete the imbalance correction normally; when it is necessary to rebalance the rotor equipment, a reset operation is required to avoid the influence of the initial position on the balancing process. First, the second reset switch 8 is activated in the reset circuit. At this time, since the counterweight block 3 is not in the initial position, the first reset switch 4 is in the closed state under the pressure of the rod 7. The drive motor 1 makes the counterweight block 3 rotate continuously until the rod 7 slides into the groove of sleeve 2, which disconnects the reset circuit, the counterweight block 3 returns to the initial position and stops moving, completing the reset.

[0019] The drive motor 1 is a piezoelectric motor to improve the self-locking capability of the balance head when power is off and reduce the structural complexity of the balance head.

[0020] The above embodiments are only for illustrating the technical concept and features of the present invention and should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A balancing head with a reset function, characterized in that: It includes a balancing module and a reset module connected thereto; the balancing module includes a drive motor (1) with two motors built in, two sleeves (2), two counterweights (3) and two housings (5). A sleeve (2) is installed on the upper and lower shafts of the drive motor (1). A counterweight (3) is fixed on each sleeve (2). The counterweights (3) and sleeves (2) on each side are set in a housing (5). The housing (5) is fixed on the drive motor (1). During the balancing process, the drive motor (1) drives the two counterweights (3) to form a correction vector that is equal in magnitude and opposite in direction to the unbalance vector at a certain position and a certain angle, thereby completing the unbalance correction. The reset module includes two reset switches, namely a first reset switch (4) and a second reset switch (8). The first reset switch (4) or the second reset switch (8) is embedded in the groove of the counterweight (3). The first reset switch (4) and the second reset switch (8) have the same structure, including a base plate (11). One end of the base plate (11) is connected to the movable plate (10). The other end of the movable plate (10) is correspondingly engaged with the contact (9). The contact (9) is connected to the base plate (11). A spring (6) is connected between the lower middle part of the movable plate (10) and the base plate (11). A rod (7) is connected above the middle part of the movable plate (10). The end of the rod (7) is engaged with the corresponding groove of the housing (5). When performing the imbalance correction action, the counterweight (3) rotates, and the rod (7) on one side slides out of the groove of the housing (5). The spring (6) on the first reset switch (4) on that side is compressed, and the second reset switch (8) on the other side is not activated. When the rotor equipment is rebalanced, the second reset switch (8) is activated in the reset circuit. The counterweight (3) is not in the initial position, and the first reset switch (4) is closed under the pressure of the rod (7).

2. A balance head with a reset function according to claim 1, characterized in that: The initial position of the counterweight (3) is fixed by the reset switch and the groove on the housing (5), and the initial angle between the two counterweights (3) is 120°. When performing the unbalance correction action, the counterweight (3) rotates, causing the rod (7) on one side to slide out of the groove on the housing (5). The spring (6) on the first reset switch (4) on that side is compressed, and the movable plate (10) and the contact (9) come into contact, and the reset circuit on that side is connected. However, since the second reset switch (8) on the other side of the control system is not activated, the first reset switch (4) does not work at this time, so that the balance head can complete the unbalance correction normally.

3. A balance head with a reset function according to claim 1, characterized in that: When it is necessary to rebalance the rotor equipment, a reset operation is required. First, the second reset switch (8) is activated in the reset circuit. At this time, since the counterweight (3) is not in the initial position, the first reset switch (4) is closed under the pressure of the rod (7). The drive motor (1) makes the counterweight (3) rotate continuously until the rod (7) slides into the groove of the housing (5), so that the reset circuit is disconnected, the counterweight (3) returns to the initial position and stops moving, and the reset is completed.

4. A balance head with a reset function according to claim 1, characterized in that: The drive motor (1) is a piezoelectric motor.

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