CN207547870U - A kind of focus control - Google Patents

Abstract

The utility model discloses a kind of focus controls, are related to laser welding technology field, which includes：Motor, cylindrical cam, microscope base, guiding axis, optical mirror slip and ball bearing；Ball bearing and guiding axis are fixedly installed on the microscope base, wherein, the ball bearing is fixedly connected on the upper end of the microscope base, the guiding axis includes at least two, and it is arranged in parallel in respectively on the microscope base, the intermediate region of the microscope base is provided through hole, and the optical mirror slip is fixedly connected in the through hole；The motor is flexibly connected with the cylindrical cam；The cylindrical cam is connect with the ball bearing glide.The rotation of motor is become optical mirror slip along moving for axis direction is oriented to by the focus control by cylindrical cam, and focusing accuracy is high, friction is small, simple in structure, compared to existing focus control, has lower cost and longer service life.

Description

A kind of focus control

Technical field

The utility model is related to laser welding technology field more particularly to a kind of focus controls.

Background technology

In space laser welding technology field or 3D printing technique field, the focus spot of laser is not only transported in the horizontal plane It is dynamic, also to move in the vertical direction, focus spot vertical direction quick movement can by the focal length variations of focusing lens Lai It realizes, can also be realized by collimation lens or focusing lens in the change in location of vertical direction.

During the utility model is realized, inventor has found that at least there are the following problems in the prior art：Above-mentioned is poly- Focus lens need to make using expensive special material, and control the apparatus structure of focusing lens Curvature varying complicated, integral into This height.

Utility model content

In order to overcome the shortcomings of Related product in the prior art, the utility model proposes a kind of focus controls, solve existing Focus control it is complicated, of high cost the problem of.

The utility model provides a kind of focus control, including：Motor, cylindrical cam, microscope base, guiding axis, optical mirror slip And ball bearing；Ball bearing and guiding axis are fixedly installed on the microscope base, wherein, the ball bearing is fixedly connected on The upper end of the microscope base, the guiding axis includes at least two, and is arranged in parallel in respectively on the microscope base, in the microscope base Between region be provided through hole, the optical mirror slip is fixedly connected in the through hole；The motor and the cylindrical cam Flexible connection；The cylindrical cam is connect with the ball bearing glide；The motor drives the cylindrical cam rotation, to The microscope base is driven to be moved along the direction of the guiding axis indirectly by the ball bearing.

In some embodiments, the cylindrical cam includes integrally formed connector, connection cam and pedestal, wherein Connection cam is fixed on the top of the connector, and the pedestal is fixed on the lower section of the connector.

In some embodiments, the connection cam is connect with the motor activity, is provided on the connection cam Ear's mounting base, ear's mounting base screw the junction of the connection cam and the motor by screwing in screw.

In some embodiments, sliding slot is machined on the pedestal, the sliding slot is with the microscope base direction of motion in pre- If angle, the ball bearing is arranged in the sliding slot.

In some embodiments, the focus control further includes housing and upper cover, the motor, cylindrical cam and mirror Seat is installed in the housing, the upper end opening of the housing, and the motor is open out positioned at described, and the upper cover covers institute State opening installation on the housing.

In some embodiments, it is machined with through-hole and multiple open-works on the housing respectively, the through-hole and open-work Position corresponds respectively to the position of the optical mirror slip and guiding axis.

Compared with prior art, the utility model has the advantage that：

The rotation of motor is become optical mirror slip edge by the focus control described in the utility model embodiment by cylindrical cam The movement of axis direction is oriented to, focusing accuracy is high, friction is small, simple in structure, compared to existing focus control, has lower Cost and longer service life.

Description of the drawings

In order to illustrate more clearly of the technical scheme in the embodiment of the utility model, will make below to required in embodiment Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some embodiments of the utility model, For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings Other attached drawings.

Fig. 1 is the sectional view of focus control described in the utility model；

Fig. 2 is the side view of focus control described in the utility model；

Fig. 3 is the vertical view of focus control described in the utility model；

Fig. 4 is the structure diagram of cylindrical cam described in the utility model；

Fig. 5 is another structure diagram of focus control described in the utility model.

Reference sign：1- motors, 2- cylindrical cams, 3- microscope bases, 4- guiding axis, 5- optical mirror slips, 6- ball bearings, 7- housings, 8- upper covers, 20- sliding slots, 21- connectors, 22- connections cam, 23- pedestals, 24- ears mounting base, 71- through-holes, 72- Open-work.

Specific embodiment

In order to which those skilled in the art is made to more fully understand the utility model, below in conjunction with the utility model reality The attached drawing in example is applied, the technical scheme in the utility model embodiment is clearly and completely described.Obviously, it is described Embodiment is only the utility model part of the embodiment, instead of all the embodiments, the utility model is given in attached drawing Preferred embodiment.The utility model can be realized in many different forms, however it is not limited to embodiment described herein, On the contrary, the purpose for providing these embodiments is to make the more thorough and comprehensive of the understanding to the disclosure of the utility model.It is based on Embodiment in the utility model, those of ordinary skill in the art are obtained all without creative efforts Other embodiment shall fall within the protection scope of the present invention.

Unless otherwise defined, all of technologies and scientific terms used here by the article is led with belonging to the technology of the utility model The normally understood meaning of technical staff in domain is identical.It is only in the term used in the description of the utility model herein The purpose of description specific embodiment, it is not intended that in limitation the utility model.The specification and right of the utility model will Ask the term " comprising " and " having " in book and above-mentioned attached drawing and their any deformations, it is intended that cover non-exclusive packet Contain.

Referenced herein " embodiment " is it is meant that a particular feature, structure, or characteristic described can wrap in conjunction with the embodiments It is contained at least one embodiment of the utility model., which there is the phrase, in each position in the description to be each meant Identical embodiment, nor the independent or alternative embodiment with other embodiments mutual exclusion.Those skilled in the art are explicit Ground and implicitly understand, embodiment described herein can be combined with other embodiments.

As shown in fig.1, Fig. 1 is the sectional view of focus control described in the utility model, the focus control includes motor 1st, cylindrical cam 2, microscope base 3, guiding axis 4, optical mirror slip 5 and ball bearing 6；And respectively in connection with shown in Fig. 2 and Fig. 3, Fig. 2 and Fig. 3 is respectively the side view and vertical view of the focus control.

Ball bearing 6 and guiding axis 4 are fixedly installed on the microscope base 3, wherein, the ball bearing 6 is fixedly connected on The upper end of the microscope base 3, the guiding axis 4 includes at least two, and is arranged in parallel in respectively on the microscope base 3, the microscope base 3 Intermediate region be provided through hole, the optical mirror slip 5 is fixedly connected in the through hole；The motor 1 and the circle Column cam 2 is flexibly connected；The cylindrical cam 2 is slidably connected with the ball bearing 6；The motor 1 drives the cylinder convex 2 rotation of wheel, the microscope base 3 to be driven to be moved along the direction of the guiding axis 4 indirectly by the ball bearing 6.

As shown in fig.4, Fig. 4 is the structure diagram of cylindrical cam 2 described in the utility model, the cylindrical cam 2 wraps Integrally formed connector 21, connection cam 22 and pedestal 23 are included, wherein connection cam 22 is fixed on the upper of the connector 21 Side, the pedestal 23 are fixed on the lower section of the connector 21；The connection cam 22 is flexibly connected with the motor 1, described Ear's mounting base 24 is provided on connection cam 22, and ear's mounting base 24 is used for that screw the connection convex by screwing in screw The junction of wheel 22 and the motor 1；Sliding slot 20, the sliding slot 20 and 3 side of moving of microscope base are machined on the pedestal 23 To in default angle α, the ball bearing 6 is arranged in the sliding slot 20；In the utility model embodiment, the motor 1 The connection cam 22 is driven to rotate, the connection cam 22 gives the ball bearing 6 one indirectly by the sliding slot 20 of pedestal 23 The component of a transverse movement, and then the microscope base 3 is pushed to be moved along the direction of the guiding axis 4；If enable the cylindrical cam 2 Length is R, and the displacement distance for enabling the microscope base 3 is h, and it is θ that motor 1, which drives the rotational angle of the cylindrical cam 2, then has h= R* θ * tan α, for example, α is 45 °, when the swing diameter of the cylindrical cam 2 is 2R=57.3mm, then when motor 1 drive it is described During 2 ° of the rotation of cylindrical cam 2, the displacement distance of the microscope base 3 is 1mm.

As shown in fig.5, Fig. 5 is another structure diagram of focus control described in the utility model, the focus control Housing 7 and upper cover 8 are further included, the motor 1, cylindrical cam 2 and microscope base 3 are installed in the housing 7, the housing 7 Upper end opening, the motor 1 be located at it is described be open out, the upper cover 8 cover it is described opening be mounted on the housing 7 on；Institute It states and is machined with through-hole 71 and multiple open-works 72 on housing 7 respectively, the position of the through-hole 71 and open-work 72 corresponds respectively to described The position of optical mirror slip 5 and guiding axis 4, respectively to guide-lighting and guiding axis 4 movement.

The rotation of motor 1 is become optical mirror slip 5 by the focus control described in the utility model embodiment by cylindrical cam 2 Along moving for 4 direction of guiding axis, focusing accuracy is high, friction is small, simple in structure, compared to existing focus control, has more Low cost and longer service life.

In above-described embodiment provided by the utility model, it should be understood that the mould illustrated as separating component Block or component may or may not be physically separate, can be located at and a place or or be distributed to On multiple positions.It can select according to the actual needs and therein some or all of realize the purpose of this embodiment scheme.

It these are only the embodiment of the utility model, be not intended to limit the scope of the claims of the utility model, although with reference to before Embodiment is stated the utility model is described in detail, it, still can be right for those skilled in the art comes Technical solution recorded in aforementioned each specific embodiment modifies or carries out equivalent replace to which part technical characteristic It changes.Every equivalent structure done using the utility model specification and accompanying drawing content is directly or indirectly used in other correlations Technical field, similarly within the utility model patent protection domain.

Claims (6)

1. a kind of focus control, which is characterized in that including：Motor, cylindrical cam, microscope base, guiding axis, optical mirror slip and ball Bearing；Ball bearing and guiding axis are fixedly installed on the microscope base, wherein, the ball bearing is fixedly connected on the microscope base Upper end, the guiding axis includes at least two, and is arranged in parallel in respectively on the microscope base, and the intermediate region of the microscope base is set Through hole is equipped with, the optical mirror slip is fixedly connected in the through hole；The motor is flexibly connected with the cylindrical cam； The cylindrical cam is connect with the ball bearing glide；The motor drives the cylindrical cam rotation, to indirectly by The ball bearing drives the microscope base to be moved along the direction of the guiding axis.

2. focus control according to claim 1, it is characterised in that：The cylindrical cam includes integrally formed connection Body, connection cam and pedestal, wherein connection cam is fixed on the top of the connector, the pedestal is fixed on the connector Lower section.

3. focus control according to claim 2, it is characterised in that：The connection cam is connect with the motor activity, Ear's mounting base is provided on the connection cam, ear's mounting base screws the connection cam and institute by screwing in screw State the junction of motor.

4. focus control according to claim 2, it is characterised in that：Be machined with sliding slot on the pedestal, the sliding slot with The microscope base direction of motion is in default angle, and the ball bearing is arranged in the sliding slot.

5. focus control according to claim 1, it is characterised in that：The focus control further includes housing and upper cover, institute It states motor, cylindrical cam and microscope base to be installed in the housing, the upper end opening of the housing, the motor is located at described It is open out, the upper cover covering opening installation is on the housing.

6. focus control according to claim 5, it is characterised in that：Through-hole and multiple is machined on the housing respectively The position of hole, the through-hole and open-work corresponds respectively to the position of the optical mirror slip and guiding axis.