TW201325808A - Balancing device and balancing method thereof - Google Patents

Abstract

A balancing device is suitable for being installed on a machine tool. The machine tool includes a working unit. The balancing device includes a balancing member and a fastening member. The balancing member is equipped on the working unit, and the fastening member and the balancing member are correspondingly disposed, and an action force can be generated between the balancing member and the fastening member so that the balancing member will impose a force on the working unit to balance the torque taken by the working unit. This invention also provides a balancing method applied to the balancing device.

Description

Balance device and its balancing method

The present invention relates to a balancing device and a balancing method thereof, and more particularly to a balancing device for balancing the torque of a machine and a balancing method thereof.

Referring to FIG. 1 , a machine tool 11 is disclosed in the invention patent of the Republic of China Announcement No. I302485 "balanced weight damping system for machine tools". The machine tool 11 includes a body 112 having a spindle head 111 at its front end. The vertical movement of the spindle head 111 is actuated such that the spindle 113 of the spindle head 111 can produce a relative cutting action on a workpiece 12. Since the spindle head 111 is internally provided with a motor device capable of driving the cutter shaft 113, and the structure of the spindle head 111 itself, it is usually heavy in weight and generates a torque for bending and deforming the body 112. After a long period of use, the body 112 inevitably has a slight deformation, which affects the accuracy of the cutting shaft 113 during cutting.

Therefore, the power tool 11 is also provided with a device for balancing the weight. The spindle head 111 and a weight 14 located behind the body 112 are connected by a chain 13 so that the weight 14 can be used for the spindle. The head 111 generates a pulling force opposite to the gravity, so that the spindle head 111 achieves a static balance effect, thereby preventing the bending deformation of the body 112.

However, in order to achieve balance between the weight 14 and the spindle head 111, the weight of the weight 14 needs to be comparable to the spindle head 111, which greatly increases the overall weight of the machine tool 11. In addition, if different spindle heads 111 need to be replaced due to cutting requirements, since the weights of the various spindle heads 111 are different, the weights 14 must be replaced, which increases the complexity of use and requires a majority. Weights 14 of different weights. Furthermore, since the weight 14 is connected to the spindle head 111 in a solid structure, that is, by the chain 13, that is, the chain 13 needs to simultaneously bear both the spindle head 111 and the weight 14 The weight, the length of use, is prone to structural damage, and even the weight of the weight 14 is dropped. If the chain 13 having stronger structural strength is used, the weight of the overall machine tool 11 is increased in disguise.

Accordingly, it is an object of the present invention to provide a balancing device that is lightweight, highly versatile, and highly durable.

Another object of the present invention is to provide a balancing method for the above balancing device.

Therefore, the balancing device of the present invention is suitable for being mounted on a machine tool, the machine tool comprising a working unit, and the balancing device comprises a balancing member and a fixing member. The balance member is disposed on the working unit, the fixing member is disposed opposite to the balance member, and a force is generated between the balance member and the balance member, so that the balance member can apply force to the work unit and the work unit is subjected to Torque balance.

The balancing method of the present invention is for a balancing device as described above, the balancing method comprising a reference value input step, an actual value obtaining step, a comparing step, and a correcting step. The reference value input step provides a relative position reference value of the balance member and the original assembly when the fixture is originally installed to a control system. The actual value obtaining step detects the actual value of the relative position of the balance member and the fixing member by the control system. The comparison step compares the actual value with the reference value and calculates the amount of force to be applied between the balance member and the fixture. The correcting step applies the force between the balance member and the fixing member to change the relative position of the balance member and the fixing member back to the original installation position.

The utility model has the advantages that a force can be generated between the balance member and the fixing member, thereby driving the balance member to apply a force to the working unit, so that the working unit reaches a state of torque balance.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments of the invention.

Before the present invention is described in detail, it is noted that in the following description, similar elements are denoted by the same reference numerals.

2 is a first preferred embodiment of the balancing device 2 of the present invention, which is suitable for being mounted on a power tool 3, the working machine 3 includes a working unit 31, and the working unit 31 includes a supporting column 311. And a working head 312 disposed on the support column 311. The balancing device 2 includes a balance member 21 disposed on the support post 311, and a fixing member 22 spaced apart from the balance member 21 and fixed under the balance member 21. The balance member 21 and the fixing member 22 can be moved relative to adjust the distance between each other.

The machine tool 3 in the preferred embodiment is a milling machine. Of course, the machine tool 3 can also be a lathe or other machine that needs to offset the torque generated by the suspension of the working head 312 or other structural members to achieve balance. This is limited. In addition, in the preferred embodiment, the balancing device 2 further includes a bracket set 23 fixed on a table top (not shown) or on the ground, and the fixing member 22 is disposed on the bracket set 23 and balanced with the bracket. The member 21 is opposite, but the fixing member 22 can also be elongated and directly fixed on the table top or the ground, and is not limited thereto, and the fixing member 22 can be disposed opposite to the balance member 21 at intervals. Just fine. Furthermore, a bracket 24 may be further disposed on the support post 311, and the balance member 21 is disposed on the bracket 24 and spaced apart from the lower fixing member 22.

Specifically, in the preferred embodiment, the balance member 21 and the fixing member 22 are realized by an electromagnet, and the characteristics of the electromagnet are controlled by a current direction so that two electromagnets are interposed between the two electromagnets. Producing a non-contact attractive force (to bring the balance member 21 close to the fixing member 22) or a repulsive force (to move the balance member 21 away from the fixing member 22), and also to adjust the amount of current to control the attraction Or the strength of the repulsive force, in addition, the relative distance between the balance member 21 and the fixing member 22 may be changed as needed to adjust the strength of the force, for example, the smaller the distance between each other, the greater the attraction force, and vice versa. The smaller it is. However, of course, one of the balance member 21 and the fixing member 22 can be realized by an electromagnet, and the other can be realized by a magnetic conductive material. By controlling the current of the electromagnet, the electromagnet and the magnetic conductive material can be realized. The non-contact attraction is generated (the balance member 21 is brought close to the fixing member 22), and the force applied by the working head 312 to the support column 311 can be offset, so that the torque of the support column 311 is balanced. status.

Referring to FIG. 3, the balancing device 2 can be used in conjunction with the balancing method of the present invention. The balancing method includes a reference value input step 4, an actual value obtaining step 5, a comparing step 6, and a correcting step 7.

First, the reference value is input to step 4, mainly to provide a reference value of the relative position of the balance member 21 and the fixing member 22 at the time of original installation to a control system (not shown).

The actual value obtaining step 5 is to detect the actual value of the relative position of the balance member 21 and the fixing member 22 by the control system.

Then, in the comparison step 6, the actual value and the reference value can be compared, and the magnitude of the force to be applied between the balance member 21 and the fixing member 22 is calculated, and the force is determined to be close to the balance member 21 Or away from the fixing member 22.

Finally, in the correction step 7, according to the result of the comparison step 6, the force between the balance member 21 and the fixing member 22 is adjusted to offset the torque of the working unit 31, and the balance member 21 and the fixing member are The relative position of 22 returns to the position at the time of original installation.

In the preferred embodiment, since the balance member 21 and the fixing member 22 are all realized by electromagnets, the force is adjusted by controlling the current direction input to the balance member 21 and the fixing member 22, The force generated between the balance member 21 and the fixing member 22 is an attractive force, and since the fixing member 22 is fixed, the balance member 21 is subjected to an arrow direction as shown in FIG. The force of the support column 311 is simultaneously applied, and by adjusting the magnitude of the input current, the strength of the attraction force can be further controlled so that the force applied by the balance member 21 to the support column 311 is The force applied to the support column 311 by the working head 312 can be offset, and the torque of the support column 311 is brought to a balanced state. Depending on the magnitude of the current output as a result of the comparison step 6, the torque may not be completely balanced for the first time. In this case, the actual value acquisition step 5 may be repeated to obtain the balance member 21 and the fixed again. The actual value of the relative position of the piece 22 is recalculated and the output current is resized. In addition, the relative position coordinates of the balance member 21 and the fixing member 22 can be manually input in addition to the actual value of the relative position of the balance member 21 and the fixed member 22 by the control system for the control system. Operation.

The balancing method is one of the methods by which the balancing device 2 can be implemented. Of course, the balancing device 2 can also use other methods for accurately adjusting the force between the balancing member 21 and the fixing member 22, instead of limit.

With the above design, the balancing device 2 of the present invention and its balancing method have the following advantages when actually used:

(1) Lightweight:

The strength of the force applied to the support post 311 by the balance member 21 is controlled by adjusting the magnitude and direction of the force between the balance member 21 and the fixed member 22. Therefore, it is not necessary to have a work head as required. The weight of the counterweight 14 (see Fig. 1) is 312, which makes the machine tool 3 more lightweight.

(2) High versatility:

Since the force between the balance member 21 and the fixing member 22 is relatively convenient and flexible in adjustment, when the user needs to replace the working head 312, the strength of the force can be adjusted according to the weight of the different working heads 312 that are replaced. That is, it is convenient to use and high in versatility, and it is not necessary to prepare a weight 14 having a majority of different weights.

(3) High durability:

Since the balance member 21 and the fixing member 22 do not need to be connected by a steel cable or a chain 13 (see FIG. 1) as a conventional connection, there is no possibility that the steel cable or the chain 13 is damaged due to extreme stress. Therefore, the durability is high.

(4) Install an unlimited direction:

Since the force applied by the balance member 21 to the support post 311 is not gravity, the relative positions of the balance member 21 and the fixed member 22 are not limited to the vertical direction or the lateral direction, and thus can be applied to various types of different Machine tool 3 structure.

Referring to FIG. 4 and FIG. 5, the second preferred embodiment of the balancing device 2 of the present invention is substantially the same as the first preferred embodiment, except that the bracket set 23 includes two of the balancing members 21; Two opposite struts 231, and the fixing member 22 is disposed on the struts 231 in an elongated shape and located above the balance member 21.

Since the fixing member 22 is disposed above the balance member 21, the direction of the input current needs to be adjusted so that the force between the fixing member 22 and the balance member 21 is a repulsive force, and since the fixing member 22 is fixed to the pillars The 231 is not moved, so the balance member 21 is subjected to a force in a direction indicated by an arrow in FIG. 5, and the fixing member 22 is disposed on the pillars 231 in addition to the advantages of the first preferred embodiment. The tooling machine 3 can also be driven by the support post 311. The tooling machine 3 can also be driven by the support post 311. The working head 312 is of a type that moves laterally, and the user can select different configurations according to different structures of the various machine tools 3. In this configuration, the user can install a sensor (not shown) on the balance member 21 to instantly measure the separation distance between the balance member 21 and the fixed member 22, and feed the distance information back to the figure. The control system in the balance method of 3, in order to change the reverse torque outputted by the balance member 21, achieves the effect of automatically adjusting the reverse torque.

Referring to FIG. 6, a third preferred embodiment of the balancing device 2 of the present invention is substantially the same as the first preferred embodiment. The difference is that the fixing member 22 is disposed on the bracket group 23, and The support columns 311 are located on opposite sides of the balance member 21.

Since the fixing member 22 is disposed on the side of the balance member 21, the force between the fixing member 22 and the balance member 21 needs to be attractive, so that the balance member 21 is subjected to an arrow as shown in the figure. The force of the direction, and at the same time, produces a force that cancels the force applied by the working head 312 to the support column 311 to balance the torque experienced by the support column 311.

In addition to the advantages of the first preferred embodiment, the preferred embodiment 22 provides another configuration for the user to use according to the side of the balance member 21. The machine tool 3 has a different structure and selects a different configuration.

Referring to FIG. 7, the fourth preferred embodiment of the balancing device 2 of the present invention is substantially the same as the first preferred embodiment. The difference is that the balancing member 21 is disposed at the bottom of the working head 312, and the fixing is fixed. The member 22 is disposed below the balance member 21.

In addition to the advantages of the first preferred embodiment, the balance member 21 is disposed at the bottom of the working head 312, so that the fixing member 22 disposed under the balance member 21 can be provided. A repulsive force is applied to the balance member 21 by the force shown by the direction of the arrow in the figure, and the weight of the work head 312 can be more directly offset to balance the torque of the support post 311.

The foregoing embodiment discloses an electromagnetic attraction or repulsive force between the balance member 21 and the fixing member 22 to balance the torque of the support column 311, but the implementation of the present invention is not limited to the electromagnetic force, and the following description will be made. Other embodiments of the balance member 21 and the fixture 22.

Referring to FIG. 4, FIG. 5 and FIG. 7, in the second and fourth preferred embodiments of the balancing device 2 of the present invention, the balance member 21 is a hydrostatic member, and the fixing member 22 has a guide. A flat rigid member, and the balance member 21 is spaced apart from the fixing member 22, that is, a gap exists between the balance member 21 and the fixing member 22. The hydrostatic element, such as an air bearing or a hydrostatic bearing, can provide a fluid (such as air, water, oil) acting on the guiding plane of the rigid object to make the fluid static A hydrostatic pressure is formed between the pressure element and the rigid object to generate a repulsive force between the hydrostatic element and the rigid object (to move the balance member 21 away from the fixed member 22), and the work head 312 can also be offset by the work head 312. The force of the support column 311 is such that the torque received by the support column 311 reaches a balanced state. It will be appreciated that the magnitude of this repulsive force can be achieved by controlling the magnitude of the hydrostatic pressure.

Referring to FIG. 2 and FIG. 6, in the first and third preferred embodiments of the balancing device 2 of the present invention, the balancing member 21 is selected as a hydrostatic member, and the fixing member 22 is a guiding member. a rigid object of the plane, a gap exists between the balance member 21 and the fixing member 22, the gap has a fluid, and the hydrostatic member provides a suction force to flow the fluid from the gap to the hydrostatic member , an attraction between the hydrostatic element and the rigid object can be generated (to bring the balance member 21 close to the fixing member 22), and the force applied by the working head 312 to the support column 311 can be offset, so that the force is The torque received by the support column 311 is in a balanced state. It will be appreciated that the magnitude of the attraction can be achieved by controlling the force that the hydrostatic element attracts the fluid.

In summary, the balancing device 2 of the present invention and the balancing method thereof can generate a force between the balancing member 21 and the fixing member 22, and drive the balancing member 21 to exert a force on the supporting column 311 to offset the The supporting column 311 is subjected to the force of the working head 312, and the strength of the force can be adjusted according to requirements. Therefore, the balancing device 2 has the advantages of light weight, high versatility, high durability, and undirectional orientation. The advantages are indeed achieved by the object of the invention.

The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent.

2. . . Balance device

twenty one. . . Balance piece

twenty two. . . Fastener

twenty three. . . Bracket set

231. . . pillar

twenty four. . . bracket

3. . . Machine tool

31. . . Work unit

311. . . Support column

312. . . Work head

4. . . Reference value input step

5. . . Actual value acquisition step

6. . . Comparison step

7. . . Correction step

Figure 1 is a side view showing one of the machine tools disclosed in the invention patent case of the Republic of China Announcement No. I302485 "Balance Weight Compensation System for Machine Tools";

Figure 2 is a side elevational view showing the first preferred embodiment of the balancing device of the present invention;

Figure 3 is a flow chart illustrating the balancing method of the present invention;

Figure 4 is a perspective view showing a second preferred embodiment of the balancing device of the present invention;

Figure 5 is a side view, an explanatory view of Figure 4;

Figure 6 is a side elevational view showing a third preferred embodiment of the balancing device of the present invention;

Figure 7 is a side elevational view showing a fourth preferred embodiment of the balancing device of the present invention.

2. . . Balance device

twenty one. . . Balance piece

twenty two. . . Fastener

twenty three. . . Bracket set

twenty four. . . Trailer

3. . . Machine tool

31. . . Work unit

311. . . Support column

312. . . Work head

Claims (15)

A balancing device adapted to be mounted on a machine tool, the machine tool comprising a working unit, and the balancing device comprises: a balancing member disposed on the working unit; and a fixing member disposed opposite to the balancing member And a force can be generated between the balance member to enable the balance member to apply force to the work unit and balance the torque received by the work unit. According to the balancing device of claim 1, the working unit comprises a supporting column, and a working head disposed on the supporting column, and the balancing member is disposed on the supporting column. The balancing device of claim 2, wherein the balancing member is disposed on a side of the supporting column opposite to the working head, and the fixing member is fixed under the balancing member. The balancing device of claim 2, wherein the balancing member is disposed on a side of the supporting column opposite to the working head, and the balancing device further comprises a fixing member for the fixing member and the fixing member a bracket set above the balance member, the bracket set having two struts on opposite sides of the balance member, and the fixing member is disposed across the struts. The balancing device according to claim 2, wherein the balancing member is disposed on a side of the supporting column opposite to the working head, and the balancing device further comprises a bracket group for the fixing member The fixing member and the support column are disposed on opposite sides of the balance member. According to the balancing device of claim 1, the working unit comprises a supporting column, and a working head disposed on the supporting column, and the balancing member is disposed at the bottom of the working head, and the fixing member is It is fixed under the balance member. The balancing device according to any one of claims 1 to 6, wherein the balance member and the fixing member are both electromagnets. A balancing device according to claim 3 or 5, wherein one of the balance member and the fixing member is an electromagnet and the other is a magnetically permeable material. A balancing device according to any one of claims 1 to 6, wherein the balancing member is a hydrostatic member and the fixing member is a rigid member having a guiding plane. The balancing device of claim 9, wherein the hydrostatic element is an air bearing or a hydrostatic bearing. The balancing device of claim 1, wherein the fixing member and the balancing member are disposed opposite to each other. The balancing device of claim 1, wherein the balance member and the fixing member are movable to change a relative distance between each other. A balancing method for the balancing device of claim 1, comprising: a reference value input step of providing a relative position reference value of the balance member and the original installation of the fixing member to a control system; an actual value obtaining step, The actual value of the relative position of the balance member and the fixed member is detected by the control system; a comparison step is performed to compare the actual value with the reference value, and accordingly, the required application between the balance member and the fixed member is calculated a magnitude of the force; and a correcting step of applying the force between the balance member and the fixing member to change the relative position of the balance member and the fixing member back to the original installation position. The balancing method of claim 13, wherein the force causes the balance member to approach or away from the fixture. The balancing method according to claim 13, wherein the magnitude of the force is by adjusting a current of the balance member and the fixing member, or a fluid pressure between the balance member and the fixing member.