CN117001399A - Sucking disc subassembly and lathe thereof - Google Patents

Abstract

The application discloses a sucker assembly and a machine tool thereof, wherein the sucker assembly comprises a sucker body, the sucker body is provided with a clamping platform capable of magnetizing and demagnetizing, the sucker body can be used for attracting a workpiece when the clamping platform is magnetized, and the workpiece can be detached from the clamping platform when the clamping platform is demagnetized; the sucker body of the sucker assembly is provided with the clamping end and the center hole respectively on the side surfaces of the two sides of the clamping platform, and the clamping end and the center hole are coaxially arranged, so that the sucker body is convenient to be matched with the four-axis dividing head and the center device quickly, and can clamp round workpieces, square workpieces and other workpieces, so that the clamping diversity of the clamp is realized, the round, square and other workpieces can be processed in a mixed mode quickly, the sucker assembly is applied to more part types, the processing and manufacturing period is shortened, the production efficiency is improved, and the competitiveness of the industry is also improved.

Description

Sucking disc subassembly and lathe thereof

Technical Field

The application relates to the technical field of clamp manufacturing, in particular to a sucker assembly and a machine tool thereof.

Background

The traditional three-axis numerical control machine tool is vertically machined, when a workpiece needs side milling, multiple turn-over clamping needs to be carried out, and auxiliary working hours are long. The existing market pushes out a four-axis dividing head (shown in fig. 12) which can realize a four-axis function on a three-axis machine tool and realize multi-surface machining by one-time clamping, but because the dividing head is of a three-jaw clamping structure, the dividing head is mainly used for clamping round workpieces, the types of the workpieces are single, and a plurality of workpieces cannot be clamped. In the actual production and manufacturing process, the square workpiece is mostly processed because the square workpiece cannot be directly clamped on the four-axis dividing head and is limited by the processing stroke of equipment, and an operator usually adopts repeated switching of the whole tool (such as a three-jaw, a vice, a bottom plate and the like), so that the method is time-consuming and labor-consuming, and the production efficiency is seriously affected.

Disclosure of Invention

The application aims to provide a sucker assembly and a machine tool thereof, and aims to solve the technical problem that production efficiency is low because a square workpiece cannot be directly clamped on a four-axis dividing head.

In order to solve the above problems, according to one aspect of the present application, there is provided a chuck assembly including a chuck body having a clamping platform capable of magnetizing and demagnetizing to attract or detach a workpiece; the side surfaces of the sucker body, which are positioned on two sides of the clamping platform, are respectively provided with a clamping end head and a center hole, and the clamping end heads and the center holes are coaxially arranged.

In some embodiments, the sucker body comprises a box body, a mounting cavity is formed in one surface of the box body, which is positioned on the clamping platform, a magnetic conduction module is arranged in the mounting cavity, and an electromagnetic coil module is arranged around the periphery of the magnetic conduction module.

In some embodiments, a partition board is disposed in the installation cavity, and the magnetic conduction module includes at least two sets of magnetic conduction blocks, where the two sets of magnetic conduction blocks are disposed on two sides of the partition board respectively.

In some embodiments, the electromagnetic coil module at least comprises two groups of electromagnetic coils, and the at least two groups of electromagnetic coils are wound around the periphery of the magnetic conductive block.

In some embodiments, the separator has a notch, and at least two sets of electromagnetic coils are in electrical communication with each other via the notch.

In some embodiments, the clamping tips and the center holes are disposed on sides of the housing on opposite sides of the mounting cavity, respectively.

In some embodiments, the box is provided with a jacking end, and the jacking hole is formed in the jacking end.

In some embodiments, the jacking end is provided with a mounting hole, the mounting hole is provided with an insert, and the jacking hole is provided on the insert.

In some embodiments, one side of the case is provided with an external port; the external port is electrically connected with the electromagnetic coil module; and/or the external port cover is provided with a dust cover.

In some embodiments, a handle is provided on one side of the case; and/or the periphery of the installation cavity, which is positioned on the magnetic conduction module, is filled with insulating materials.

According to another aspect of the application, an embodiment of the application also provides a machine tool comprising a suction cup assembly as described above.

In some embodiments, the machine tool further comprises a control module, the control module is provided with an upper magnetic key and a demagnetizing key, and when the sucker assembly comprises an external port, the control module is connected with the external port.

Compared with the prior art, the sucker assembly has at least the following beneficial effects:

the embodiment of the application discloses a sucker assembly, which can be applied to a machine tool, wherein the machine tool can be a traditional three-axis numerical control vertical machine tool, the machine tool comprises a workbench, a four-axis dividing head and a center device, the four-axis dividing head and the center device are arranged on the workbench, the workbench can move along the Z-axis direction to form a three-axis machining system, the workbench is provided with the four-axis dividing head and the center device, the four-axis dividing head is provided with a three-jaw clamping jaw, the center device is provided with a center, one end of a round piece can be clamped on the three-jaw clamping jaw of the four-axis dividing head, the other end of the center device is provided with a center hole, the center of the center device is propped against the center hole to realize the rotation of a workpiece, and the sucker assembly comprises a sucker body, and particularly, the sucker body is provided with a clamping platform capable of magnetizing and demagnetizing, the workpiece can be sucked when the clamping platform is magnetized, and the workpiece can be detached from the clamping platform when the clamping platform is demagnetized; the clamping ends and the center holes are respectively arranged on the side surfaces of the two sides of the clamping platform, the axes of the clamping ends are coaxial with the axes of the center holes, when the clamping disc assembly is arranged on a machine tool, the clamping ends can be clamped through the three-jaw clamping jaw of the four-axis dividing head, the center of the center device is propped against the center holes, so that the rapid clamping of the clamping disc assembly is realized, meanwhile, the clamping platform is convenient to clamp workpieces on the clamping platform of the clamping disc body in a magnetizing and demagnetizing mode, the machined workpieces are detached, the clamping platform can clamp round workpieces, square workpieces can be clamped, and workpieces in other shapes can be clamped, therefore, the clamping disc assembly is convenient to rapidly match with the four-axis dividing head and the center device, can clamp the round workpieces, the square workpieces and other workpieces, so that the clamping diversity of the clamp is realized, the round workpieces, the square workpieces and other workpieces are mixed to be processed to realize rapid switching, the processing of more parts is realized, the processing manufacturing cycle is shortened, and the production efficiency is improved, and the competitive power of the industry is also improved.

The sucker assembly is matched with the four-axis dividing head and the center device, so that a square workpiece can be processed by rotating at any angle, one-time clamping multi-surface processing is realized, the clamping frequency is reduced, and the equipment utilization rate is improved.

In another aspect, the machine tool provided by the application is manufactured based on the sucker assembly, and the beneficial effects of the sucker assembly are referred to as beneficial effects of the sucker assembly, and are not described in detail herein.

The foregoing description is only an overview of the present application, and is intended to provide a better understanding of the present application, as it is embodied in the following description, with reference to the preferred embodiments of the present application and the accompanying drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view of a perspective exploded structure of a suction cup assembly according to an embodiment of the present application;

fig. 2 is a schematic perspective view of a chuck assembly according to an embodiment of the present application, in cooperation with a three-jaw and tip device of a four-axis dividing head, for clamping a square workpiece;

FIG. 3 is a schematic diagram of an assembled structure of a chuck assembly according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a box body of a suction cup assembly according to an embodiment of the present application;

fig. 5 is a schematic perspective view of an insert of a suction cup assembly according to an embodiment of the present application;

fig. 6 is a schematic structural view of an insert of a suction cup assembly according to an embodiment of the present application;

FIG. 7 is a cross-sectional view at A-A of FIG. 6;

FIG. 8 is a cross-sectional view at B-B in FIG. 6;

FIG. 9 is a schematic view of a handle of a chuck assembly according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a magnetic conductive block of a suction cup assembly according to an embodiment of the present application;

FIG. 11 is a schematic structural diagram of an external port of a chuck assembly according to an embodiment of the present application;

fig. 12 is a schematic structural view of a conventional four-axis index head in which three claws cooperate with a center device to clamp a round workpiece.

Reference numerals illustrate:

1. a case; 11. a mounting cavity; 12. a partition plate; 13. a notch; 14. clamping the end head; 15. a top end is arranged; 151. a mounting hole; 16. an insert; 161. a center hole; 162. a countersunk hole; 163. a pin hole; 17. an external port; 171. a dust cover; 18. a handle;

2. a magnetic conductive block;

3. an electromagnetic coil;

4. a four-axis dividing head;

5. a center device;

6. a cup head screw;

7. and a pin shaft.

Detailed Description

In order to further describe the technical means and effects adopted for achieving the preset aim of the application, the following detailed description refers to the specific implementation, structure, characteristics and effects according to the application of the application with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "an embodiment" do not necessarily refer to the same embodiment. Furthermore, the particular features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.

In the description of the present application, it should be clear that the terms "first," "second," and the like in the description and claims of the present application and in the above-described figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order; the terms "vertical," "transverse," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "horizontal," and the like are used for indicating an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description of the present application, and do not mean that the apparatus or element referred to must have a specific orientation or position, and thus should not be construed as limiting the present application.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

Example 1

As shown in fig. 1-12, an embodiment of the present application provides a chuck assembly, which includes a chuck body having a clamping platform capable of magnetizing and demagnetizing to attract or detach a workpiece; the sides of the sucker body, which are positioned on two sides of the clamping platform, are respectively provided with a clamping end 14 and a center hole 161, and the axis of the clamping end 14 and the axis of the center hole 161 are coaxially arranged.

In this embodiment, the chuck assembly may be applied to a machine tool, which may be a conventional three-axis numerically-controlled vertical machine tool, and the machine tool includes a table, a four-axis dividing head 4 and a center device 5 disposed on the table, the table may be moved in X-axis and Y-axis directions, a cutting head for holding a tool may be moved in Z-axis directions to form a three-axis machining system, the four-axis dividing head 4 and the center device 5 are disposed on the table, the four-axis dividing head 4 has three-jaw jaws, the center device 5 has a center, one end of a round piece may be clamped on the three-jaw jaws of the four-axis dividing head 4, the other end of the four-axis dividing head has a center hole, and the center of the center device 5 is held on the center hole to implement rotation of the workpiece, but the square piece may not be directly clamped on the four-axis dividing head for machining, and the chuck assembly of this embodiment includes a chuck body, in particular, the chuck body has a clamping platform capable of magnetizing and demagnetizing, when the clamping platform is magnetized, may be used to attract the workpiece, and when the clamping platform is demagnetized, the workpiece may be removed from the clamping platform; the chuck body of this embodiment is provided with clamping end 14 and top hole 161 respectively in the side that is located clamping platform both sides, clamping end 14 cylindric, and the axis of clamping end 14 is coaxial with the axis of top hole 161, clamping platform and clamping end 14's axis parallel arrangement, when installing the sucking disc subassembly on the lathe, can carry out the centre gripping with clamping end 14 through the three-jaw clamping jaw of four-axis dividing head 4, top through top device 5 is on top hole 161, the quick clamping of sucking disc subassembly has been realized, simultaneously because clamping platform adopts the mode of magnetizing and demagnetizing be convenient for with the work piece clamping to the clamping platform of sucking disc body and dismantle the work piece that will process, and clamping platform can clamp circular work piece also can clamp square work piece, of course other shapes work piece also can clamp, therefore, the sucking disc subassembly of this embodiment not only is convenient for with the quick-fit of four-axis dividing head 4 and top device 5, moreover can clamp circular work piece, square work piece equidimension work piece's work piece centre gripping diversity, make circular, work piece class work piece mix the realization quick switch, the manufacturing cycle of the quick switch, the manufacturing cycle has been improved, more has improved the manufacturing cycle.

The sucking disc subassembly of this embodiment cooperates with four-axis dividing head 4 and top device 5, can make square work piece can rotate arbitrary angle processing, realizes a clamping multiaspect processing, reduces clamping number of times, promotes equipment availability.

In some embodiments, the sucker body comprises a box body 1, a mounting cavity 11 is formed in one surface of the box body 1, which is located on the clamping platform, a magnetic conduction module is arranged in the mounting cavity 11, and an electromagnetic coil module is arranged around the periphery of the magnetic conduction module.

In this embodiment, install the chamber 11 through having seted up in the box 1 of sucking disc body is located the one side of clamping platform, this embodiment is through installing the intracavity 11 built-in magnetic conduction module that is equipped with, the periphery at magnetic conduction module is around being equipped with the solenoid module, just can be through the last magnetism of solenoid module to magnetic conduction module after the solenoid module circular telegram, can realize the demagnetization of magnetic conduction module after the solenoid module outage, and then make the clamping platform realize going up magnetism and the process of demagnetization, this simple structure is reliable, be convenient for make and electrified control, realize the quick clamping and the dismantlement of work piece, the clamping of the work piece that can satisfy different structures simultaneously.

In some embodiments, the partition plate 12 is disposed in the installation cavity 11, and the magnetic conduction module includes at least two sets of magnetic conduction blocks 2, where the two sets of magnetic conduction blocks 2 are disposed on two sides of the partition plate 12 respectively.

In this embodiment, install and be provided with baffle 12 in the chamber 11, baffle 12 quantity can be a plurality of, the magnetic conduction module includes two at least groups of magnetic conduction piece 2, a set of magnetic conduction piece 2 specifically can include a plurality of magnetic conduction piece 2, two groups of magnetic conduction piece 2 set up respectively in the both sides of baffle 12, can carry out reasonable partitioning through baffle 12 with installing chamber 11, through dividing two groups of magnetic conduction piece 2 with the magnetic conduction module, set up respectively in baffle 12 both sides, can realize dividing into a plurality of magnetic conduction piece 2 with the magnetic conduction module group and produce, be convenient for the magnetic conduction piece 2 miniaturization of sucking disc subassembly, batch production, in addition, can confirm the size of clamping platform according to the size of work piece, then assemble the required clamping platform's of work piece with a plurality of magnetic conduction piece 2 size, improve sucking disc subassembly's application scope and flexibility.

In some embodiments, the electromagnetic coil module includes at least two groups of electromagnetic coils 3, and at least two groups of electromagnetic coils 3 are wound around the periphery of the magnetic conductive block 2.

In this embodiment, since the partition 12 reasonably blocks the installation cavity 11, the electromagnetic coil module may be divided into at least two groups of electromagnetic coils 3, and one group of electromagnetic coils 3 may include a plurality of electromagnetic coils 3; the two groups of electromagnetic coils 3 are respectively wound around the peripheries of the two groups of magnetic conducting blocks 2 arranged on two sides of the partition plate 12, namely, the magnetic conducting blocks 2 arranged on the same side of the partition plate 12 are respectively wound with one electromagnetic coil 3, and the electromagnetic coils 3 arranged on the magnetic conducting blocks 2 on the same side of the partition plate 12 are electrically connected to form one group of electromagnetic coils 3, namely, the two groups of magnetic conducting blocks 2 arranged on two sides of the partition plate 12 are correspondingly wound with the two groups of electromagnetic coils 3, after the two groups of electromagnetic coils 3 are electrified, the upper magnet of the magnetic conducting module can be conducted through the electromagnetic coil module, the demagnetizing of the magnetic conducting module can be achieved after the two groups of electromagnetic coils 3 are powered off, and therefore the clamping platform can achieve the upper magnet and demagnetizing processes.

In addition, the number of the electromagnetic coils 3 and the number of the magnetic conducting blocks 2 are more, so that the magnetic attraction force of the sucker assembly can be increased, and the stable clamping of the workpiece is ensured.

In some embodiments, the separator 12 has a notch 13, and the two sets of electromagnetic coils 3 are in electrical communication via the notch 13.

In this embodiment, by providing the notch 13 in the partition 12 and electrically connecting the two sets of electromagnetic coils 3 through the notch 13, the two sets of electromagnetic coils 3 and more than two sets of electromagnetic coils 3 can be powered on and powered off simultaneously, so as to clamp and detach the workpiece.

In some embodiments, the clamping head 14 and the tip hole 161 are provided on the sides of the housing 1 on both sides of the mounting cavity 11, respectively.

In this embodiment, the box 1 may have a square structure, the clamping platform may be a plane of the box 1, the installation cavity 11 is a cavity recessed inwards from the clamping platform of the box 1, in this embodiment, the clamping end 14 and the tip hole 161 are respectively disposed on sides of two sides of the box 1 located on the installation cavity 11, the sides of two sides of the installation cavity 11 are vertically disposed with the clamping platform, an axis of the clamping end 14 and an axis of the tip hole 161 are coaxially disposed, and are parallel to the clamping platform, the three-jaw clamping jaw of the four-axis indexing head 4 and the tip device 5 are convenient to clamp and abut the clamping end 14 and the tip hole 161 on the box 1 respectively, so that the box 1 is convenient to cooperate with the four-axis indexing head 4 and the tip device 5.

In some embodiments, the box 1 is provided with a jacking end 15, and the jacking hole 161 is provided on the jacking end 15.

In this embodiment, be provided with on the box 1 and prop up and establish end 15, prop up and establish end 15 and can be cylindric structure, tip hole 161 sets up on prop up and establish end 15, and tip hole 161 can set up with prop up and establish end 15 coaxial, when processing, guarantees that centre gripping end 14 is coaxial with prop up and establish end 15, guarantees simultaneously that tip hole 161 and prop up and establish end 15 coaxial just can guarantee centre gripping end 14 and centre hole 161 axiality, this structure is convenient for process, can guarantee the precision of sucking disc body, and then has guaranteed the precision of processing work piece.

In some embodiments, the jacking head 15 is provided with a mounting hole 151, the mounting hole 151 is provided with an insert 16, and the jacking hole 161 is provided on the insert 16.

In this embodiment, the mounting hole 151 is formed by the top-setting end 15, the mounting hole 151 may be a cylindrical hole, the mounting hole 151 and the top-setting end 15 are coaxially arranged, the mounting hole 151 is provided with the insert 16, the insert 16 may be cylindrical, the top-setting hole 161 is formed on the insert 16, specifically formed at one axial end of the insert 16 and may be coaxially arranged with the insert 16, the insert 16 may be further provided with the pin hole 163 and the countersunk hole 162, the insert 16 may be heat treated, quenched and hardened to 48-52 degrees, the overall hardness of the insert 16 is improved, the top-setting hole 161 is prevented from being excessively worn and deformed, the angle a of the top-setting hole 161 may be 54 ° -62 °, the angle may be electrically beaten into place by adopting an electric spark during processing, the bottom of the mounting hole 151 may be provided with the pin hole 163 and a threaded hole, the insert 16 may be fitted into the mounting hole 151 through the pin hole 163 of the pin shaft 7 and the pin hole 163 of the bottom of the mounting hole 151, at this time, the axis of the insert 161 and the pin hole 163 may be coaxially arranged with the axis of the clamping end 14, and the pin hole 163 may be fitted with the pin hole 163, thereby positioning accuracy may be improved; after positioning, the insert 16 is locked at the bottom of the mounting hole 151 through the counter bore 162 by the cup head screw 6, which facilitates installation, maintenance and replacement of the center hole 161.

In some embodiments, one side of the case 1 is provided with an external port 17; the external port 17 is electrically connected with the electromagnetic coil module, and can be connected with a power supply or a control system through the external port 17, so that the connection and the disassembly of the sucker assembly are facilitated.

In some embodiments, the external port 17 is covered with a dust cover 171, and when not in use, the external port 17 may be covered by the dust cover 171 to prevent foreign objects, dust, etc. from entering the external port 17.

In some embodiments, a handle 18 is provided on one side of the case 1, and the handle 18 facilitates carrying, lifting, holding, etc. of the suction cup assembly.

In some embodiments, the installation cavity 11 is located at the periphery of the magnetic conduction module and is filled with an insulating material, and the insulating material may be a material such as a resin, so as to prevent foreign matters such as processing materials and cooling liquid from entering the installation cavity 11.

In addition, the magnetic conductive block 2, the handle 18 and the external port 17 may be provided with a countersunk hole 162, the magnetic conductive block 2 is locked at the bottom of the installation cavity 11 through the countersunk hole 162 on the magnetic conductive block 2 by the cup head screw 6, the handle 18 is locked at the side of the box 1 through the countersunk hole 162 on the handle 18 by the cup head screw 6, and the external port 17 is locked at the side of the box 1 through the countersunk hole 162 on the external port 17 by the cup head screw 6.

Example 2

The embodiment of the application also provides a machine tool, which comprises the sucker assembly of the embodiment 1.

In some embodiments, the machine tool further comprises a control module, wherein the control module is provided with an upper magnetic key and a demagnetizing key, and when the sucker assembly comprises an external port 17, the control module is connected with the external port 17.

In this embodiment, this lathe still includes control module, and specifically, control module has magnetic key and demagnetizing key, and when the sucking disc subassembly included external port 17, control module was connected with external port 17, when specifically using, installed the back with the sucking disc subassembly, was connected control module with external port 17, can make the clamping platform of sucking disc subassembly go up magnetism through pressing the magnetic key, adsorbed the work piece this moment, after finishing processing, can make the clamping platform demagnetization of sucking disc subassembly through pressing the demagnetizing key, can dismantle the work piece this moment.

It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the apparatus, device and unit described above may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.

While the application has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions of equivalents may be made and equivalents will be apparent to those skilled in the art without departing from the scope of the application. Therefore, the protection scope of the application is subject to the protection scope of the claims.

Claims (12)

1. A suction cup assembly, characterized in that the suction cup assembly comprises a suction cup body; the sucker body is provided with a clamping platform capable of magnetizing and demagnetizing so as to attract a workpiece or detach the workpiece; the side surfaces of the sucker body, which are positioned on two sides of the clamping platform, are respectively provided with a clamping end head and a center hole, and the clamping end heads and the center holes are coaxially arranged.

2. The chuck assembly according to claim 1, wherein the chuck body comprises a case, an installation cavity is formed in one surface of the case located on the clamping platform, a magnetic conduction module is arranged in the installation cavity, and an electromagnetic coil module is wound around the periphery of the magnetic conduction module.

3. The suction cup assembly according to claim 2, wherein a partition board is arranged in the installation cavity, the magnetic conduction module comprises at least two groups of magnetic conduction blocks, and the two groups of magnetic conduction blocks are respectively arranged on two sides of the partition board.

4. A chuck assembly according to claim 3 wherein the electromagnetic coil assembly comprises at least two sets of electromagnetic coils, at least two sets of said electromagnetic coils being wound around the periphery of the magnetic conductive block.

5. The chuck assembly according to claim 4, wherein the separator has a notch, at least two of the electromagnetic coils being in electrical communication with each other through the notch.

6. The suction cup assembly of claim 2, wherein the clamping head and the tip hole are disposed on sides of the housing on opposite sides of the mounting cavity, respectively.

7. The suction cup assembly of claim 6, wherein the housing is provided with a jacking head, and the jacking hole is provided in the jacking head.

8. The suction cup assembly of claim 7, wherein the jacking head is provided with a mounting hole, the mounting hole being provided with an insert, the tip Kong Kaishe being on the insert.

9. The suction cup assembly of claim 2, wherein an external port is provided on one side of the housing; the external port is electrically connected with the electromagnetic coil module; and/or the external port cover is provided with a dust cover.

10. The suction cup assembly of claim 2, wherein a handle is provided on one side of the housing; and/or the periphery of the installation cavity, which is positioned on the magnetic conduction module, is filled with an insulating material.

11. A machine tool comprising a suction cup assembly according to any one of claims 1 to 10.

12. The machine tool of claim 11 further comprising a control module having an upper magnetic key and a demagnetizing key, wherein the control module is coupled to the external port when the chuck assembly includes the external port.