CN111885871A - Controller of servo motor - Google Patents

Abstract

The invention discloses a controller of a servo motor, which comprises a support frame base cover and a controller chip mounting box base cover, wherein the support frame base cover is provided with a plurality of support frame base holes; the supporting frame base cover is of a conductor structure, and the bottom of the supporting frame base cover is grounded; at least 2 cavity base covers are arranged on the support frame base cover; the controller chip mounting box base cover is buckled on the cavity base cover and fixed, and a negative lead wire of the controller chip is communicated with the support frame base cover; the invention has simple processing technology, convenient installation, strong universality and higher stability.

Description

Controller of servo motor

Technical Field

The invention relates to a controller of a servo motor, and belongs to the field of application of motor control technology.

Background

In the prior art, in the driving process of a servo motor (generally, a 3-phase alternating current motor, or 23 alternating current motors, which form six input ends), a controller is arranged between the servo motor and a driving end to realize rectification of the output of the servo motor and control of the power or on/off of the output.

Some existing simple controllers (or PS machines) can only rectify a servo motor, and their structure includes two substrates, the two substrates are integrally cast with metal material, the two substrates are insulated from each other, one of the substrates is grounded, the other substrate is provided with a rectifier bridge control element formed by diodes, the negative terminal of the control element is connected to the grounded substrate, the positive electrode (conductor sheet structure) of the control element is also connected to an external wire through a connection post on the corresponding substrate, in order to ensure the positive electrode of the control element is connected to the external wire stably on the connection post, the connection post is sleeved with a nut, the positive electrode of the control element is tightly attached to the external wire connection end through a torsion (the torsion is referred to the prior art standard), therefore, the connection post must be fixed to the basic connection (i.e. the connection post cannot be displaced up and down or shifted left and right), however, the connecting column is not consistent with the base body provided with the control element in material (considering casting process, material and assembly cost), so that the function of the torque is difficult to overcome in a fixing mode between the connecting column and the base body (in the prior art, the connecting column is generally fixed on the base body through a through hole on the base body in a rivet mode through a through hole on the base body), and the looseness or deviation between the connecting part and the base body is easily caused due to vibration or other external factors in the later period, so that the connection between the control element and an external electric wire is unstable, and the servo motor cannot be normally controlled;

meanwhile, as the controller works, heat can be generated; if not, the operating condition and the service life of controller can significantly reduce to dispel the heat in time, all adopt among the prior art to set up the heating panel mode and realize, generally all adopt to place the controller on the heating panel, adopt below the heating panel ventilation through the mode realization of heat transfer, however this mode effect is not obvious.

Disclosure of Invention

The invention aims to provide a controller of a servo motor, which completely changes the existing design structure to overcome the defects of the prior art.

Technical scheme of the invention

A controller of a servo motor comprises a support frame base cover and a controller chip mounting box base cover;

the supporting frame base cover is of a conductor structure, and the bottom of the supporting frame base cover is grounded; at least 2 cavity base covers are arranged on the support frame base cover;

the controller chip mounting box base cover is buckled on the cavity base cover and fixed, and a negative lead wire of the controller chip is communicated with the support frame base cover;

preferably, the base plate of the controller chip mounting box base cover is a conductive aluminum sheet structure base cover, the aluminum sheet structure base cover is communicated with the negative electrode end of a controller chip in the controller chip mounting box base cover, a bolt groove base cover is arranged on a support frame base cover beside the controller chip mounting box base cover, the bolt groove base cover and a base body form a whole body and have a conductive effect, and the bolt base cover penetrates through the aluminum sheet structure base cover and is screwed in the bolt groove base cover, so that the negative electrode of the controller chip in the controller chip mounting box base cover is communicated with the support frame base cover through the aluminum sheet structure base cover, the bolt base cover and the bolt groove base cover in sequence and forms grounding;

the lower surface of the aluminum sheet structure base cover is provided with a drainage cooling strip base cover and a channel base cover which is formed by enclosing the drainage cooling strip base cover and the lower surface of the aluminum sheet structure base cover;

the lower surface edgewise of aluminum sheet structure base lid sets up ka tai base lid, and this ka tai base lid and cavity base lid cooperation realize that controller chip installation box base lid connects reliable and stable.

Preferably, two phase current connector base covers are arranged in front of the controller chip mounting box base cover, two elastic conductive connecting piece base covers are symmetrically arranged on the left side and the right side of the controller chip mounting box base cover, and the elastic conductive connecting piece base covers are used for connecting adjacent controller chip mounting box base covers;

the end part of the elastic conductive connection sheet base cover is of an inclined plane structure, the end face of one elastic conductive connection sheet base cover of the controller chip mounting box base cover is flat, and the end face of the other elastic conductive connection sheet base cover is provided with a contact protrusion base cover.

Preferably, one side of the support frame base cover is provided with a capacitor mounting groove base cover; the capacitor mounting groove base cover is of a cavity structure, a controller chip capacitor circuit is placed in the capacitor mounting groove base cover, and an output signal circuit of the controller chip mounting box base cover is connected with the capacitor mounting groove base cover and leads out an output end.

Preferably, a base cover is arranged above the support frame base cover and the capacitor mounting groove base cover;

the base cover is connected with the support frame base cover or the capacitor mounting groove base cover through bolts or hinges and is insulated from each other, the base cover is insulated integrally, and a conductor sheet base cover used for communicating a controller chip or a capacitor anode of the controller chip is arranged in the base cover;

the conductor sheet base cover is pre-embedded in the base cover, and the output end of the conductor sheet base cover is exposed.

Preferably, a fixed column base cover is pre-embedded at a base cover of the output end of the conductor sheet base cover, the output end of the conductor sheet base cover is sleeved on the fixed column base cover, and an external electric wire connected with the controller chip or the positive electrode of the capacitor of the controller chip is sleeved on the fixed column base cover to realize that the external electric wire is connected and fixed with the conductor sheet base cover.

Preferably, the upper part of the fixed column base cover is in a threaded structure, and the nut base cover is matched with the fixed column base cover so that the conductive sheet base cover sleeved on the fixed column base cover and the external electric wire are stably contacted with each other.

Preferably, a supporting circular plate base cover is arranged at the lower part of the fixed column base cover, the supporting circular plate base cover is integrally embedded into the base cover, and the upper surface of the supporting circular plate base cover is exposed;

preferably, the upper surface of the support circular plate base cover is higher than the upper surface of the base cover around the support circular plate base cover.

Preferably, a fixed ring base cover is arranged at the bottom end of the fixed ring base cover and is wrapped by the base cover, so that the fixed ring base cover is insulated from the outside, a bolt hole base cover is arranged on the support frame base cover corresponding to the fixed ring base cover, a bolt base cover penetrates through the fixed ring base cover and is connected with the bolt hole base cover in a matched mode, the middle of the fixed ring base cover is fixed with the base cover, and the bottom of the fixed ring base cover is fixed with the support frame base cover through the bolt base cover and is insulated from the support frame base cover;

a sleeve base cover is arranged in the hollow position in the middle of the fixed ring base cover, the sleeve base cover is embedded into the base cover around the fixed ring base cover, and the bolt-base cover penetrates through the sleeve base cover and then is matched with the bolt hole base cover;

the outer surface of the sleeve base cover is provided with a sawtooth strip base cover parallel to the axis of the sleeve base cover, the outer surface of the sleeve base cover is provided with a shallow groove ring base cover, and the sawtooth strip base cover and the shallow groove ring base cover are mutually staggered.

Compared with the prior art, the invention has the advantages of simple processing technology, convenient installation, strong universality and higher stability.

Drawings

FIG. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a bottom view of FIG. 1;

FIG. 3 is a cross-sectional view of FIG. 1 at the fixed post of FIG. 1;

FIG. 4 is a schematic structural view of the support frame;

FIG. 5 is a schematic structural view of a controller chip mounting box;

FIG. 6 is a schematic view of an aluminum sheet structure;

FIG. 7 is a schematic structural view of the sleeve;

FIG. 8 is a schematic view of the present invention connected to an external wire;

FIG. 9 is a schematic cross-sectional view of the retainer ring in cooperation with the bolt.

The labels in the figures are: 1-support frame, 2-cavity, 3-controller chip mounting box, 4-aluminum sheet structure, 5-bolt groove, 6-bolt, 7-drainage cooling strip, 8-channel, 9-clamping table, 10-phase current connector, 11-elastic conductive connecting sheet, 12-contact protrusion, 13-capacitor mounting groove, 14-base cover, 15-conductor sheet, 16-fixing column, 17-nut, 18-support circular plate, 19-fixing ring, 20-bolt hole, 21-bolt I, 22-sleeve, 23-sawtooth strip, 24-shallow groove ring, 25-gap and 26-external wire.

Detailed Description

The invention is described in further detail below with reference to the attached drawing, but is not to be construed as being limited thereto.

As shown in fig. 1 to 8, the controller of the servo motor of the present invention includes a support frame 1 and a controller chip mounting box 3, wherein the support frame 1 is a conductor structure, and the bottom thereof is grounded; at least 2 cavities 2 are arranged on the support frame 1; the controller chip mounting box 3 is buckled on the cavity 2 and fixed, and a negative lead wire of the controller chip is communicated with the support frame 1;

the controller chip mounting box 3 is characterized in that a bottom plate of the controller chip mounting box 3 is provided with a conductive aluminum sheet structure 4, the aluminum sheet structure 4 is communicated with a negative electrode end of a controller chip in the controller chip mounting box 3, a bolt groove 5 is arranged on a support frame 1 beside the controller chip mounting box 3, the bolt groove 6 and a base body are integrated into a whole to have a conductive effect, and a bolt 6 penetrates through the aluminum sheet structure 5 and is screwed in the bolt groove 6, so that the negative electrode of the controller chip in the controller chip mounting box 3 is communicated with the support frame 1 through the aluminum sheet structure 4, the bolt 6 and the bolt groove 5 in sequence and forms grounding;

the lower surface of the aluminum sheet structure 4 is provided with a drainage cooling strip 7 and a channel 8 enclosed by the drainage cooling strip 7 and the lower surface of the aluminum sheet structure 4;

the lower surface edge of the aluminum sheet structure 4 is provided with a clamping table 9, the clamping table 9 is matched with the cavity 2 to realize stable and reliable connection of the controller chip mounting box 3, the cavity 2 is arranged on the supporting frame, the controller chip mounting box 3 is directly mounted and fixed at the cavity, the lower surface of the aluminum sheet structure 4 is provided with a drainage cooling strip 7, cold air directly acts on the aluminum sheet structure 4 at the bottom of the controller chip mounting box 3 under the action of a fan, the heat dissipation effect can be greatly improved, the aluminum sheet structure 4 is used as the negative electrode output end of the controller chip in the controller chip mounting box 3, so that the heat dissipation effect is very obvious, the prior art generally adopts the mode that the controller chip is placed on a heat dissipation plate, heat is dissipated through the heat dissipation plate, heat is transferred by one step in the middle, and the stable contact between the controller chip and the heat dissipation plate is ensured, otherwise, the effect is not obvious, the scheme completely avoids the design scheme of the prior art, and has low manufacturing cost and high reliability.

Two phase current connectors 10 are arranged in front of the controller chip mounting box 3, the phase current connectors 10 are used for connecting corresponding lower phase circuits of the motor, two elastic conductive connecting sheets 11 are symmetrically arranged on the left side and the right side of the controller chip mounting box 3, the elastic conductive connecting sheets 11 are used for connecting adjacent controller chip mounting boxes 3, and the elastic conductive connecting sheets 11 are used for transmitting control signals between controller chips;

the end part of the elastic conductive connecting sheet 11 is of an inclined plane structure, the end face of one elastic conductive connecting sheet 11 of the controller chip mounting box 3 is flat, the end face of the other elastic conductive connecting sheet 11 is provided with a contact bulge 12, and the inclined plane structure and the contact bulge 12 enable the adjacent controller chip mounting box 3 to be stably and reliably connected.

A capacitor mounting groove 13 is formed in one side of the support frame 1; capacitor mounting groove 13 is for holding the chamber structure and place controller chip capacitor circuit in capacitor mounting groove 13, and the output signal circuit of controller chip mounting box 3 connects capacitor mounting groove 13 and draws forth the output.

A base cover 14 is arranged above the support frame 1 and the capacitor mounting groove 13;

the base cover 14 is connected with the support frame 1 or the capacitor mounting groove 13 through bolts or hinges and is insulated from each other, the base cover 14 is insulated integrally, and a conductor piece 15 for communicating a controller chip or a capacitor anode of the controller chip is arranged in the base cover 14; the prior art of the support frame 1 is that the base body is integrally cast from conductive metal, generally from aluminum, the base cover 14 is integrally cast from insulating plastic material, and the conductor piece 15 is placed on the base cover 14 and integrally cast from a mold, but the input end and the output end are exposed respectively.

In the prior art, two substrates are integrally cast by aluminum casting, so that the substrate on the upper layer is not cast by plastic, mainly, connecting columns in the prior art are all made of metal with extremely high conductivity, such as aluminum or copper and the like, which need to be fixedly connected with the connecting columns, if the substrates and the connecting columns are made of plastic, the connecting columns and the substrates are difficult to bear the torsion under the action of the torsion, so that the upper substrates are generally made of metal with higher hardness, then the connecting columns are fixed in connecting holes of the upper substrates by rivets, but the connecting mode is still unreliable, the two metal parts are fixed by deformation of the mechanical pre-tightening rivets, and are easy to loosen in the long-term use process, so that the connection at the positions is unreliable.

The conductor piece 15 is embedded in the base cover 14 and the output end thereof is exposed.

A fixing column 16 is embedded in the base cover 14 at the output end of the conductor sheet 15, the output end of the conductor sheet 15 is sleeved on the fixing column 16, and an external electric wire connected with a controller chip or the positive electrode of a controller chip capacitor is sleeved on the fixing column 16 to realize that the external electric wire is connected and fixed with the conductor sheet 15.

The upper part of the fixed post 16 is in a threaded structure, and the nut 17 is matched with the fixed post 16 so that the conductive sheet 15 sleeved on the fixed post 16 and an external electric wire are stably contacted with each other.

A supporting circular plate 18 is arranged at the lower part of the fixing column 16, the supporting circular plate 18 is wholly embedded into the base cover 14, and the upper surface of the supporting circular plate 18 is exposed;

the upper surface of the support disk 18 is higher than the upper surface of the base cover 14 around its vicinity.

A fixing ring 19 is arranged at the bottom end of the fixing column 16, the fixing ring 19 is wrapped by the base cover 14, so that the fixing ring 19 is insulated from the outside, bolt holes 20 are formed in the support frame 1 corresponding to the fixing ring 19, a first bolt 21 penetrates through the fixing ring 19 to be matched and connected with the bolt holes 20, the middle of the fixing ring 19 is fixed with the base cover 14, and the bottom of the fixing ring is fixed with the support frame 1 through the first bolt 21 and is insulated from each other;

a sleeve 22 is arranged in the hollow position in the middle of the fixing ring 19, the sleeve 22 is embedded on the base cover 14 around the fixing ring 19, and the first bolt 21 penetrates through the sleeve 22 and then is matched with the bolt hole 20;

the outer surface of the sleeve 22 is provided with a sawtooth strip 23 parallel to the axis of the sleeve 22, the outer surface of the sleeve 22 is provided with a shallow groove ring 24, and the sawtooth strip 23 and the shallow groove ring 24 are staggered with each other.

In the embodiment, the thicknesses of the fixing post 16, the supporting circular plate 18 and the fixing ring 19 of the fixing ring 19 are not limited, and the fixing post 16, the supporting circular plate 18 and the fixing ring 19 can be integrally cast and formed into a whole according to specific design under torsion, after the fixing post 16 adopts the structure, when the base cover 14 is cast by using an insulating material, the conducting plate 15 is cast together and the conducting plate 15 is sleeved on the fixing post 16 at the time of the integral casting, so that the thread structure part of the fixing post 16, the upper surface of the supporting circular plate and the hollow part of the sleeve 22 are exposed, the rest of the fixing post is completely wrapped by the base cover 14, the gap 25 between the fixing ring 16 and the sleeve 22 is filled with the insulating material forming the base cover 14, the bolt hole 20 is arranged on the support frame 1 corresponding to the position.

Then, when the external electric wire 26 is sleeved on the fixed post 16 to be contacted and connected with the conductive sheet 15, by screwing the nut 17 on the fixed post 16, after the conductive sheet 15 is contacted with the external electric wire 26, a torsion force is applied to make the conductive sheet 15 and the external electric wire 26 contact with each other, and the fixed ring 19 on the fixed post is also contacted with the conductive sheet 15 and the external electric wire 26.

When torsion is generated, the fixing column 16 is also subjected to torsion, the fixing column 16 is integrally covered by the base cover 14 to realize position fixing, the plastic is a brittle material and has low strength and cannot resist excessive torsion applied to the fixing column to be easily broken, the torsion applied to the fixing column 16 is mainly transmitted to the sleeve 22 and then to the bolt 21 through the fixing column 16, and finally to the support frame 1, the fixing column 16 comprises the fixing ring 19, the support circular plate 18, the sleeve 22, the bolt 21 and the support frame 1 are all made of metal with strong hardness, so that the large torsion can be resisted, the base cover 14 is only subjected to partial torsion, the position of the fixing column 16 is only limited by the base cover, the torsion action of the torsion of the fixing column is greatly increased, and the controller can be ensured to be reliably contacted with an external line when in use.

Compared with the prior art, the base cover 15 is made of insulating plastic, the cost is greatly saved, the space for installing the chip on the base body is increased, the controller can have more control functions, and the connection of the output end is reliable and stable.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims (10)

1. The utility model provides a servo motor's controller, includes support frame (1) and controller chip mounting box (3), its characterized in that:

the support frame (1) is of a conductor structure, and the bottom of the support frame is grounded; at least 2 cavities (2) are arranged on the support frame (1);

the controller chip mounting box (3) is buckled on the cavity (2) and fixed, and a negative electrode lead-out wire of the controller chip is communicated with the support frame (1).

2. A controller for a servo motor according to claim 1, wherein: the controller chip mounting box is characterized in that a bottom plate of the controller chip mounting box (3) is of a conductive aluminum sheet structure (4), the aluminum sheet structure (4) is communicated with a negative electrode end of a controller chip in the controller chip mounting box (3), a bolt groove (5) is formed in a support frame (1) beside the controller chip mounting box (3), the bolt groove (6) and a base body are integrated into a whole to have a conductive effect, and a bolt (6) penetrates through the aluminum sheet structure (5) and is screwed in the bolt groove (6), so that the negative electrode of the controller chip in the controller chip mounting box (3) is communicated with the support frame (1) through the aluminum sheet structure (4), the bolt (6) and the bolt groove (5) to form grounding;

the lower surface of the aluminum sheet structure (4) is provided with a drainage cooling strip (7) and a channel (8) enclosed by the drainage cooling strip (7) and the lower surface of the aluminum sheet structure (4);

the lower surface of aluminum sheet structure (4) sets up card platform (9) along the limit, and this card platform (9) and cavity (2) cooperation realize that controller chip mounting box (3) are connected reliable and stable.

3. A controller for a servo motor according to claim 2, wherein: two phase current connectors (10) are arranged in front of the controller chip mounting box (3), two elastic conductive connecting sheets (11) are symmetrically arranged on the left side and the right side of the controller chip mounting box (3), and the elastic conductive connecting sheets (11) are used for connecting adjacent controller chip mounting boxes (3);

the end part of the elastic conductive connecting sheet (11) is of an inclined plane structure, the end part end face of one elastic conductive connecting sheet (11) of the controller chip mounting box (3) is flat, and a contact bulge (12) is arranged on the end part end face of the other elastic conductive connecting sheet (11).

4. A controller for a servo motor according to claim 1, wherein: a capacitor mounting groove (13) is arranged on one side of the support frame (1); capacitor mounting groove (13) are for holding the chamber structure and place controller chip capacitor circuit in capacitor mounting groove (13), and the output signal circuit of controller chip mounting box (3) connects capacitor mounting groove (13) and draws forth the output.

5. A controller for a servo motor according to claim 1, wherein: a base cover (14) is arranged above the support frame (1) and the capacitor mounting groove (13);

the base cover (14) is connected with the support frame (1) or the capacitor mounting groove (13) through bolts or hinges and is insulated from each other, the base cover (14) is insulated integrally, and a conductor sheet (15) for communicating a controller chip or a capacitor anode of the controller chip is arranged in the base cover (14);

the conductor sheet (15) is pre-embedded in the base cover (14) and the output end of the conductor sheet is exposed.

6. The controller for a servo motor according to claim 5, wherein: a fixing column (16) is embedded in a base cover (14) at the output end of a conductor sheet (15), the output end of the conductor sheet (15) is sleeved on the fixing column (16), and an external electric wire connected with a controller chip or a capacitor positive electrode of the controller chip is sleeved on the fixing column (16) to be connected and fixed with the conductor sheet (15).

7. The controller for a servo motor according to claim 6, wherein: the upper part of the fixed column (16) is in a threaded structure, and the screw cap (17) is matched with the fixed column (16) so that the conducting strip (15) sleeved on the fixed column (16) and an external electric wire are stably contacted with each other.

8. The controller for a servo motor according to claim 6, wherein: a supporting circular plate (18) is arranged at the lower part of the fixing column (16), and the supporting circular plate (18) is wholly embedded into the base cover (14) and the upper surface is exposed.

9. A controller for a servo motor according to claim 8, wherein: the upper surface of the supporting circular plate (18) is higher than the upper surface of the base cover (14) around the supporting circular plate.

10. The controller for a servo motor according to claim 6, wherein: the bottom end of the fixing column (16) is provided with a fixing ring (19), the fixing ring (19) is wrapped by the base cover (14) to enable the fixing ring (19) to be insulated from the outside, a bolt hole (20) is formed in the support frame (1) corresponding to the position of the fixing ring (19), a first bolt (21) penetrates through the fixing ring (19) to be matched and connected with the bolt hole (20), the middle of the fixing ring (19) is fixed with the base cover (14), and the bottom of the fixing ring is fixed with the support frame (1) through the first bolt (21) and is insulated from each other;

a sleeve (22) is arranged at the hollow position in the middle of the fixing ring (19), the sleeve (22) is embedded into the base cover (14) around the fixing ring (19), and the first bolt (21) penetrates through the sleeve (22) and then is matched with the bolt hole (20);

the outer surface of the sleeve (22) is provided with a sawtooth strip (23) parallel to the axis of the sleeve (22), the outer surface of the sleeve (22) is provided with a shallow groove ring (24), and the sawtooth strip (23) and the shallow groove ring (24) are mutually staggered.

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