CN215510711U

CN215510711U - Gap adjusting device

Info

Publication number: CN215510711U
Application number: CN202121738300.1U
Authority: CN
Inventors: 冯消冰; 刘以宇; 郑家胜
Original assignee: Beijing Bo Tsing Technology Co Ltd
Current assignee: Beijing Bo Tsing Technology Co Ltd
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2022-01-14
Anticipated expiration: 2031-07-28

Abstract

The present invention provides a gap adjusting device, including: the connecting part is used for connecting the first workpiece and the second workpiece; and the adjusting part is arranged on the connecting part and comprises a movably arranged wedge, the tip of the wedge can be inserted into a gap between a first workpiece and a second workpiece which are connected on the connecting part, and the depth of the wedge inserted into the gap can be adjusted so as to adjust the value of the gap. Through the technical scheme provided by the utility model, the problem of complex gap adjusting structure in the prior art can be solved, and the stability and flexibility of the device and the accuracy and reliability of adjustment are improved while the adjusting structure is simplified.

Description

Gap adjusting device

Technical Field

The utility model relates to the technical field of mechanical assembly measurement, in particular to a gap adjusting device.

Background

At present, for an assembly gap adjusting device in the prior art, the gap adjusting device is mainly matched with a metal pipe to be adjusted, and then the gap is adjusted by adjusting the gap adjusting device.

The clearance adjustment device among the prior art, it is comparatively complicated to adjust partial structure, and most devices adopt the mode of direct action waiting to process the tubular metal resonator to adjust the clearance, will carry out other processing to the tubular metal resonator that needs the assembly, adjusts inconveniently, installs holistic installation and dismantles trouble.

SUMMERY OF THE UTILITY MODEL

The utility model provides a gap adjusting device, which aims to solve the problem that the gap adjusting device in the prior art is complex in structure.

In order to solve the above-mentioned problems, according to an aspect of the present invention, there is provided a gap adjusting apparatus including: the connecting part is used for connecting the first workpiece and the second workpiece; and the adjusting part is arranged on the connecting part and comprises a movably arranged wedge, the tip of the wedge can be inserted into a gap between a first workpiece and a second workpiece which are connected on the connecting part, and the depth of the wedge inserted into the gap can be adjusted so as to adjust the value of the gap.

Further, the wedge piece comprises a first plane and a second plane, and an included angle between the first plane and the second plane is an acute angle; or the wedge piece comprises a first plane and a step surface with a plurality of steps, and the distances between two adjacent steps and the first plane are unequal.

Further, the adjusting part further includes: a connector connected with the wedge; the adjusting piece, adjusting piece and connecting piece are connected, and the adjusting piece is for the movably setting of connecting portion to drive the regulation portion and remove.

Furthermore, the connecting part is provided with a limiting structure, and the limiting structure is in limiting fit with the wedge piece or the connecting piece so as to prevent the connecting piece from rotating; the adjusting piece penetrates through the connecting piece, and the adjusting piece is in threaded fit with the connecting piece; the adjusting piece is rotatably connected with the connecting part, and the adjusting piece drives the connecting piece to move when rotating.

Further, connecting portion include connecting plate, limiting plate and spacing cap, and the limiting plate setting is on the connecting plate, and spacing cap setting is between connecting plate and limiting plate, and the regulating part passes the limiting plate, the end connection of spacing cap and regulating part.

Furthermore, the connecting plate is provided with a first avoiding hole which forms a limiting structure, and at least one part of the wedge piece is movably arranged in the first avoiding hole in a penetrating mode; the connecting part also comprises a fastener which fixedly connects the connecting plate with the limiting plate; the regulating part comprises a first regulating section and a second regulating section which are connected with each other, the radial size of the second regulating section is smaller than that of the first regulating section, the limiting plate is provided with a second avoiding hole, the radial size of the second avoiding hole is smaller than that of the first regulating section and larger than that of the second regulating section, the end face of the first regulating section close to one end of the second regulating section is in limit fit with the limiting plate, and the second regulating section penetrates through the second avoiding hole.

Further, the connection portion includes: the connecting plate is provided with an accommodating cavity; the piece is inhaled to magnetism, and magnetism is inhaled the setting and is holding in the chamber, and the outer wall of the piece is inhaled to magnetism and the spacing cooperation of inner wall that holds the chamber, and magnetism is inhaled the piece and is used for adsorbing first work piece and/or second work piece.

Furthermore, the accommodating cavities and the magnetic suction pieces are multiple, the accommodating cavities are arranged on the connecting plate at intervals, and the magnetic suction pieces and the accommodating cavities are arranged in a one-to-one correspondence manner; wherein, the piece is inhaled to at least one magnetism in the piece of a plurality of magnetism is used for adsorbing first work piece, and other magnetism in the piece of a plurality of magnetism are inhaled the piece and are used for adsorbing the second work piece.

Further, the accommodating cavity is provided with an opening, and the connecting part further comprises a blocking piece which is arranged at the position of the opening to block the accommodating cavity.

Further, the gap adjusting device further includes: an illumination device that illuminates the first workpiece and the second workpiece connected to the connection portion; and a handle disposed on the connecting portion.

By applying the technical scheme of the utility model, the utility model provides a gap adjusting device, which comprises: the connecting part is used for connecting the first workpiece and the second workpiece; and the adjusting part is arranged on the connecting part and comprises a movably arranged wedge, the tip of the wedge can be inserted into a gap between a first workpiece and a second workpiece which are connected on the connecting part, and the depth of the wedge inserted into the gap can be adjusted so as to adjust the value of the gap. By adopting the scheme, the first workpiece and the second workpiece are connected through the connecting part, the relative positions of the connecting part and the two workpieces in the depth direction of the gap can be limited, the wedge piece arranged on the connecting part is adjusted, the wedge piece is controlled to move in the gap, and the gap can be limited after the two sides of the wedge piece are respectively abutted against the first workpiece and the second workpiece, so that the gap between the first workpiece and the second workpiece can be adjusted according to the depth of the wedge piece inserted into the gap, and the adjustment flexibility and accuracy are ensured.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is a schematic structural view of a gap adjusting apparatus according to an embodiment of the present invention;

FIG. 2 shows a side view of the lash adjustment device of FIG. 1;

FIG. 3 shows a schematic view of the use of the lash adjustment device of FIG. 1;

FIG. 4 shows a schematic view of the wedge of the lash adjustment device of FIG. 1;

fig. 5 is a schematic structural view showing a wedge member in the gap adjusting device according to the second embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a connecting portion; 11. a connecting plate; 12. a limiting plate; 13. a limiting cap; 14. a first avoidance hole; 15. a fastener; 16. a magnetic member; 17. a blocking member; 20. an adjustment section; 21. a wedge; 211. a first plane; 212. a second plane; 213. a step surface; 22. a connecting member; 23. an adjustment member; 30. an illumination device; 31. a switch; 32. a battery; 33. an illumination light source; 40. a handle.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the utility model, and not restrictive of the full scope of the utility model. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 4, a first embodiment of the present invention provides a gap adjusting apparatus, including: a connecting portion 10, the connecting portion 10 being used for connecting a first workpiece and a second workpiece; and an adjusting part 20 provided on the connecting part 10, the adjusting part 20 including a movably provided wedge member 21, a tip of the wedge member 21 being insertable into a gap between a first workpiece and a second workpiece connected to the connecting part 10, a depth of insertion of the wedge member 21 into the gap being adjustable to adjust a value of the gap.

In the embodiment, the first workpiece and the second workpiece are connected through the connecting part 10, the relative position of the connecting part 10 and the two workpieces in the depth direction of the gap can be defined, the wedge piece 21 arranged on the connecting part 10 is adjusted, the wedge piece 21 is controlled to move in the gap, and the value of the gap can be defined after two sides of the wedge piece 21 are respectively abutted with the first workpiece and the second workpiece, so that the gap between the first workpiece and the second workpiece can be adjusted according to the insertion depth of the wedge piece 21 into the gap, and the adjustment flexibility and accuracy are ensured.

In use, the connecting portion 10 may be first engaged with the first and second workpieces and then the gap between the first and second workpieces may be adjusted. Set up like this, can be more audio-visual observe and adjust the fit-up gap, avoid adjusting earlier, install again to lead to adjusting the condition of error. Alternatively, the position of the wedge member 21 on the connecting portion 10 is adjusted, that is, the desired gap value is adjusted in advance, and then the connecting portion 10 is connected to the first workpiece and the second workpiece in a fitting manner, and the first workpiece and the second workpiece sandwich the wedge member 21, so that the gap value between the first workpiece and the second workpiece can be defined.

When the adjustable clearance adjusting device is used, a plurality of sets of clearance adjusting devices can be matched for use, the clearance adjusting devices are distributed on the periphery of the workpiece to be adjusted according to the shape and size of the assembled workpiece to be adjusted, and the clearance is adjusted at different positions together, so that the clearance adjusting precision is more accurate and reliable.

Alternatively, the connecting portion 10 may have other shapes such as an arc shape, so that the surface shape of the connecting portion 10 is adapted to the surface of the workpiece, which may increase the contact area and improve the connection reliability. The shape of the connecting part 10 can be determined according to the shape of the workpiece with the assembly clearance adjusted according to actual needs, so that the assembly clearance of workpieces with various shapes can be adjusted. In particular, the first and second workpieces may be circular metal tubes.

The gap adjusting device can be designed with a plurality of wedge pieces 21 with different sizes, and the wedge pieces are replaced according to the size or the gap value of the adjusted workpiece, so that the application range of the gap adjusting device is improved. The wedge 21 is made of quenched tool steel, and is high in strength, wear-resistant and not prone to deformation.

As shown in fig. 4, wedge member 21 includes first plane 211 and second plane 212, and the included angle between first plane 211 and second plane 212 is an acute angle.

In this embodiment, a wedge 21 having an acute included angle between the first plane 211 and the second plane 212 is used, end surfaces of the two workpieces facing the assembly gap are respectively abutted to the first plane 211 and the second plane 212, and the gap distance between the workpieces matched with the two planes is adjusted by adjusting the depth of the wedge 21 inserted into the gap between the two workpieces, so as to ensure the accuracy of the adjustment of the assembly gap.

As shown in fig. 4, the wedge member 21 has a scale indicating the width of the wedge member 21 at the fitting gap position when the wedge member 21 is inserted into the fitting gap, i.e., the value of the fitting gap to be adjusted. The clearance control device is convenient to control clearance when the assembly clearance is adjusted, the adjusting process is visual and more intuitive, and the adjusting precision is improved.

As shown in fig. 1, the adjusting portion 20 further includes: a connecting member 22 connected to the wedge member 21; the adjusting part 23, the adjusting part 23 and the connecting part 22 are connected, and the adjusting part 23 is movably arranged relative to the connecting part 10 to drive the adjusting part 20 to move. By the arrangement, the adjusting piece 23 movably arranged on the connecting part 10 is used for adjusting the connecting piece 22 connected with the connecting piece, so that the wedge piece 21 connected with the connecting piece 22 is adjusted, the purpose of adjusting the gap is achieved, the adjusting mode is simple, the operation is convenient, and the adjusting precision is high.

Specifically, the connecting part 10 has a limit structure which is in limit fit with the wedge member 21 or the connecting member 22 to prevent the connecting member 22 from rotating; the adjusting piece 23 penetrates through the connecting piece 22, and the adjusting piece 23 is in threaded fit with the connecting piece 22; the adjusting part 23 is rotatably connected with the connecting part 10, and the adjusting part 23 drives the connecting part 22 to move when rotating.

In the present embodiment, the rotation of the wedge member 21 is limited by the limiting structure, the rotation of the connecting member 22 connected to the wedge member 21 is further limited, and the relative movement between the adjusting member 23 and the connecting member 22 is realized by the threaded engagement between the adjusting member 23 and the connecting member 22, wherein the connecting member 22 can move with the rotation of the adjusting member 23, but can not rotate with the rotation of the adjusting member 23. The adjustment of the assembly clearance is realized through threaded connection, and the accuracy and the reliability of the adjustment are ensured.

As shown in fig. 1, the connecting portion 10 includes a connecting plate 11, a limiting plate 12 and a limiting cap 13, the limiting plate 12 is disposed on the connecting plate 11, the limiting cap 13 is disposed between the connecting plate 11 and the limiting plate 12, the adjusting member 23 passes through the limiting plate 12, and the limiting cap 13 is connected to an end of the adjusting member 23.

In this embodiment, one end of the adjusting member 23 passes through the stopper plate 12 from one end of the stopper plate 12 near the connecting member 22 and is connected to the adjusting member 23. Spacing cap 13 has the spacing groove, and spacing groove and regulating part 23 correspond the setting, have the internal thread in the spacing groove, and the part and the spacing groove screw-thread fit of regulating part 23 stretching into the spacing groove, the spacing groove is spacing to the ascending removal in regulating part 23 circumference, nevertheless does not influence the rotation of regulating part 23, can rotate along with the rotation of regulating part 23 behind spacing cap 13 and the regulating part 23 threaded connection. Spacing cap 13 presss from both sides and establishes between connecting plate 11 and limiting plate 12, leaves the gap between spacing cap 13 and connecting plate 11 and the limiting plate 12 to guarantee that spacing cap 13 can normally rotate, limiting plate 12 and connecting plate 11 play limiting displacement to the axial of spacing cap 13 simultaneously, prevent that spacing cap 13 drunkenness from resulting in adjusting inaccurately.

Specifically, the connecting plate 11 is provided with a first avoidance hole 14, the first avoidance hole 14 forms a limiting structure, and at least one part of the wedge 21 is movably arranged in the first avoidance hole 14 in a penetrating manner; the connecting part 10 further comprises a fastener 15, and the fastener 15 fixedly connects the connecting plate 11 with the limiting plate 12; the regulating part 23 comprises a first regulating section and a second regulating section which are connected with each other, the radial size of the second regulating section is smaller than that of the first regulating section, the limiting plate 12 is provided with a second avoiding hole, the radial size of the second avoiding hole is smaller than that of the first regulating section and larger than that of the second regulating section, the end face of the first regulating section, which is close to one end of the second regulating section, is in limit fit with the limiting plate 12, and the second regulating section penetrates through the second avoiding hole.

In this embodiment, the thinner end of the wedge 21 passes through the first avoidance hole 14 and at least a part of the thinner end of the wedge passes through the first avoidance hole 14, and the protruding condition of the end of the wedge 21 protruding out of the first avoidance hole 14 is adjusted to adjust the assembly gap, so that the adjustment is convenient and reliable.

Further, the connecting portion 10 further includes a fastening member 15, a through hole is formed in the connecting plate 11, a mounting hole is formed in the limiting plate 12 corresponding to the through hole, and the fastening member 15 penetrates through the through hole and is connected with the mounting hole, so that the connecting plate 11 and the limiting plate 12 are fixedly connected. Wherein, fastener 15 can be the bolt, is equipped with corresponding internal thread in through-hole and the mounting hole, and fastener 15 comes fixed connection board 11 and limiting plate 12 through threaded connection, simple to operate, and simple structure, and fastener 15 can be a plurality of, and the through-hole and the mounting hole that correspond the setting also are a plurality of, through the common fixed connection of a plurality of fasteners 15, more reliable and more stable.

Further, the limiting plate 12 is provided with a second avoiding hole, the second avoiding hole corresponds to the adjusting piece 23 and the limiting groove, the second avoiding hole, the limiting groove and the adjusting piece 23 are arranged on the same axis, and the adjusting piece 23 penetrates through the second avoiding hole and then is in threaded connection with the limiting groove in the limiting cap 13. The adjusting part 23 comprises a first adjusting section and a second adjusting section which are connected with each other and the radial size of which is reduced in sequence, and the second adjusting section penetrates through the second avoiding hole and then is in threaded connection with the limiting groove. The radial dimension in second dodge the hole should slightly be less than first regulation section to carry out spacingly to the removal of adjusting part 23 axial direction, the radial dimension in second dodge the hole should slightly be greater than second regulation section again, when guaranteeing that the second regulation section passes the second and dodge the hole, also can rotate in the second dodge the hole, does not influence the regulation of device to the clearance. All there is the external screw thread on first regulation section and the second regulation section, and the external screw thread of first regulation section and connecting piece 22 screw-thread fit are in order to adjust assembly clearance, and the external screw thread of second regulation section cooperates with the spacing groove in the spacing cap 13 in order to carry on spacingly to the ascending removal in the circumferential direction of regulating part 23. By the arrangement, the assembly gap can be adjusted more accurately, and the accuracy and the reliability of gap adjustment are ensured.

Specifically, the connection portion 10 includes: a connecting plate 11, wherein the connecting plate 11 is provided with a containing cavity; magnetism is inhaled piece 16, and magnetism is inhaled piece 16 and is set up in holding the chamber, and magnetism is inhaled the outer wall of piece 16 and is held the spacing cooperation of inner wall in chamber, and magnetism is inhaled piece 16 and is used for adsorbing first work piece and/or second work piece. In this embodiment, the connecting plate 11 may be made of a magnetic conductive material such as plastic or metal, so as to avoid affecting the attraction of the magnetic attraction member 16 to the first workpiece and the second workpiece. The gap adjusting device is attracted to the workpiece to be adjusted by the magnetic attraction force of the magnetic attraction piece 16 provided in the accommodation chamber in the connecting plate 11. If the magnetic attraction of the magnetic attraction pieces 16 is large enough, the first workpiece and the second workpiece can be attracted simultaneously by only one magnetic attraction piece 16; if the magnetic attraction of the magnetic attraction piece 16 is small or the work piece to be adsorbed is large, a plurality of magnetic attraction pieces 16 can be arranged to adsorb the first work piece and the second work piece respectively. By the arrangement, the stability of the structure is guaranteed, and the fixing is convenient and reliable.

Furthermore, the accommodating cavities and the magnetic suction pieces 16 are multiple, the accommodating cavities are arranged on the connecting plate 11 at intervals, and the magnetic suction pieces 16 and the accommodating cavities are arranged in a one-to-one correspondence manner; at least one magnetic attraction piece 16 of the plurality of magnetic attraction pieces 16 is used for adsorbing a first workpiece, and other magnetic attraction pieces 16 of the plurality of magnetic attraction pieces 16 are used for adsorbing a second workpiece. Set up like this, every is waited to adjust the work piece and all corresponds at least one magnetism and inhale piece 16, prevents to wait to adjust the work piece because of adsorbing fixed unstable and drop, has guaranteed that magnetism inhales piece 16 and has treated the adsorbed reliability of adjusting the work piece, has also improved the stability of clearance adjustment device when adjusting the fit-up gap simultaneously.

Specifically, the accommodating chamber has an opening, and the connecting portion 10 further includes a blocking member 17, the blocking member 17 being disposed at the position of the opening to block the accommodating chamber. The plugging piece 17 can adopt multiple connection modes such as threaded connection, joint or riveting, and the plugging piece 17 is set up and holds the chamber with the shutoff in open position, thereby prevents to hold thereby that the magnetism that holds in the chamber is inhaled 16 and is come off at the adjustment process and lead to rather than absorbent work piece separation that comes off, avoids causing the influence to overall structure and accommodation process.

In this embodiment, the gap adjusting device further includes: an illumination device 30 that illuminates the first workpiece and the second workpiece connected to the connection portion 10; and a handle 40 provided on the connecting portion 10. Wherein the lighting device 30 comprises: an illumination light source 33 used in a dark environment for illuminating the workpiece and the device; a battery 32 for continuously supplying power to the illumination light source 33; the switch 31 is electrically connected to the illumination light source 33 and the battery 32, and the illumination light source 33 is controlled by the switch 31. The handle 40 is arranged on the connecting portion 10, the handle 40 can be fixed on the connecting portion 10 in a connecting mode of bolt connection, clamping connection or welding and the like, and the gap adjusting device is more portable and more convenient to mount and dismount through the arrangement of the handle 40.

As shown in fig. 5, a second embodiment of the present invention provides a gap adjusting device, and the difference between the second embodiment and the first embodiment is: wedge 21 includes first plane 211 and step face 213 with a plurality of steps, and the distance between two adjacent steps and first plane 211 is unequal. The assembly gap between the two workpieces is determined by the limit fit of the first plane 211 and the end face of one workpiece close to the gap, and the limit fit of a certain step face 213 in the plurality of step faces and the end face of the other workpiece close to the gap, and different adjustment gaps are determined by selecting different steps. The spacing effect of this kind of mode is better more stable, and the distance between per two adjacent steps and the first plane 211 can be based on waiting to adjust the clearance and design and process, can be applicable to the regulation in the clearance of multiple size.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A gap adjusting apparatus, comprising:

a connecting portion (10), the connecting portion (10) being for connection with a first workpiece and a second workpiece;

an adjusting portion (20) provided on the connecting portion (10), the adjusting portion (20) including a movably provided wedge member (21), a tip of the wedge member (21) being insertable into a gap between a first workpiece and a second workpiece connected on the connecting portion (10), a depth of insertion of the wedge member (21) into the gap being adjustable to adjust a value of the gap.

2. Gap adjusting device according to claim 1,

the wedge piece (21) comprises a first plane (211) and a second plane (212), and an included angle between the first plane (211) and the second plane (212) is an acute angle; or the like, or, alternatively,

the wedge member (21) comprises a first plane (211) and a step surface (213) with a plurality of steps, and the distances between the adjacent steps and the first plane (211) are unequal.

3. The gap adjusting apparatus according to claim 1, wherein the adjusting portion (20) further comprises:

a connecting piece (22) connected with the wedge piece (21);

the adjusting piece (23) is connected with the connecting piece (22), and the adjusting piece (23) is movably arranged relative to the connecting part (10) to drive the adjusting part (20) to move.

4. Gap adjusting device according to claim 3,

the connecting part (10) is provided with a limiting structure which is in limiting fit with the wedge piece (21) or the connecting piece (22) so as to prevent the connecting piece (22) from rotating;

the adjusting piece (23) penetrates through the connecting piece (22), and the adjusting piece (23) is in threaded fit with the connecting piece (22); the adjusting piece (23) is rotatably connected with the connecting portion (10), and the adjusting piece (23) drives the connecting piece (22) to move when rotating.

5. Gap adjusting device according to claim 4,

connecting portion (10) include connecting plate (11), limiting plate (12) and spacing cap (13), limiting plate (12) set up on connecting plate (11), spacing cap (13) set up connecting plate (11) with between limiting plate (12), regulating part (23) pass limiting plate (12), spacing cap (13) with the end connection of regulating part (23).

6. Gap adjusting device according to claim 5,

the connecting plate (11) is provided with a first avoidance hole (14), the first avoidance hole (14) forms the limiting structure, and at least one part of the wedge piece (21) movably penetrates through the first avoidance hole (14);

the connecting part (10) further comprises a fastening piece (15), and the fastening piece (15) fixedly connects the connecting plate (11) and the limiting plate (12);

regulating part (23) are including interconnect's first regulation section and second regulation section, the radial dimension of second regulation section is less than first regulation section, limiting plate (12) have the second and dodge the hole, the radial dimension that the hole was dodged to the second is less than first regulation section just is greater than the second regulation section, first regulation section is close to the terminal surface that second regulation section one end with limiting plate (12) spacing cooperation, the second is adjusted the section and is passed the hole is dodged to the second.

7. Gap adjusting device according to claim 1, characterized in that the connecting part (10) comprises:

a connecting plate (11), the connecting plate (11) having a receiving cavity;

magnetism is inhaled piece (16), magnetism is inhaled piece (16) and is set up hold in the chamber, the outer wall of magnetism piece (16) with hold the spacing cooperation of the inner wall in chamber, magnetism is inhaled piece (16) and is used for adsorbing first work piece and/or the second work piece.

8. The gap adjusting device of claim 7, wherein the accommodating cavities and the magnetic attracting pieces (16) are multiple, the accommodating cavities are arranged on the connecting plate (11) at intervals, and the magnetic attracting pieces (16) and the accommodating cavities are arranged in a one-to-one correspondence manner; at least one magnetic piece (16) of the magnetic pieces (16) is used for adsorbing the first workpiece, and other magnetic pieces (16) of the magnetic pieces (16) are used for adsorbing the second workpiece.

9. A gap-setting device as claimed in claim 7, characterized in that the receiving chamber has an opening, the connecting portion (10) further comprising a closure (17), the closure (17) being arranged at the location of the opening for closing off the receiving chamber.

10. The gap adjustment apparatus of claim 1, further comprising:

an illumination device (30) that illuminates the first workpiece and the second workpiece connected to the connection section (10);

a handle (40) provided on the connecting portion (10).