CN111941045A

CN111941045A - Workpiece rotating assembly system

Info

Publication number: CN111941045A
Application number: CN201910399838.5A
Authority: CN
Inventors: 郑文池; 赖冠廷; 曾俊能; 黄才升
Original assignee: Young Optics Inc
Current assignee: Young Optics Inc
Priority date: 2019-05-14
Filing date: 2019-05-14
Publication date: 2020-11-17

Abstract

A workpiece rotating assembly system. The workpiece rotating and assembling system comprises a rotating table, a first clamp, a double-shaft sliding seat and a second clamp. The first clamp is arranged on the rotating platform. The biaxial slide seat comprises a base, a first slide block and a second slide block. The first sliding block is arranged on the base and slides along a first direction relative to the base. The second sliding block is connected to the first sliding block and slides along a second direction relative to the first sliding block. The second clamp is connected to the second slider.

Description

Workpiece rotating assembly system

Technical Field

The present disclosure relates to an assembly system, and more particularly, to a workpiece rotation assembly system.

Background

With the development of optical technology, various lens modules are continuously being developed. The lens module achieves optical effects of wide angle, telescope and the like through precise assembly of a plurality of lenses.

Generally, the holder (Retainer) and the sleeve (Barrel) of the lens module need to be interlocked to assemble a lens. However, when the two threads are locked, the eccentricity is not easy to control, and the locking is easy to be incomplete or unable to be locked.

Disclosure of Invention

An embodiment of the present invention discloses a workpiece rotation assembly system, which utilizes two directional degrees of freedom provided by a slide, so that even if two workpieces have horizontal eccentricity or inclined eccentricity, the relative position/angle of the two workpieces can be automatically adjusted, and the locking process will not generate situations such as tooth slipping and tooth breaking.

According to a first aspect of the present disclosure, a workpiece rotation assembly system is provided. The workpiece rotating and assembling system comprises a rotating table, a first clamp, a double-shaft sliding seat and a second clamp. The first clamp is arranged on the rotating platform. The biaxial slide seat comprises a base, a first slide block and a second slide block. The first sliding block is arranged on the base and slides along a first direction relative to the base. The second sliding block is connected to the first sliding block and slides along a second direction relative to the first sliding block. The second clamp is connected to the second slider.

According to a second aspect of the present disclosure, a workpiece rotation assembly system is provided. The workpiece rotating and assembling system comprises a motor, a first jig, a fixed seat, a sliding seat and a second jig. The motor has a rotating shaft. The first fixture is linked with the rotating shaft and used for fixing a first workpiece. The sliding seat is connected with the fixed seat and slides along at least two specific directions. The second fixture is linked with the sliding seat and is used for fixing a second workpiece. The second fixture and the first fixture are arranged at opposite positions.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

FIG. 1 depicts a schematic view of a workpiece according to an embodiment.

FIG. 2 depicts a schematic view of a workpiece according to another embodiment.

FIG. 3 is a schematic diagram of a workpiece rotation assembly system according to one embodiment.

Fig. 4 to 6 illustrate a process of screwing a workpiece into the workpiece.

Fig. 7 shows a schematic view of a carriage according to another embodiment.

Detailed Description

Referring to fig. 1, a schematic diagram of

workpieces

200, 300 according to an embodiment is shown. The workpiece 200 is, for example, a Barrel (Barrel) of a lens module, and the workpiece 300 is, for example, a holder (Retainer) of the lens module. In another embodiment, the workpiece 200 is a holder of a lens module, for example, and the workpiece 300 is a sleeve of a lens module, for example. The workpiece 200 has, for example, an outer thread 210 and the workpiece 300 has, for example, an inner thread 310. In another embodiment, the workpiece 200 has, for example, internal threads and the workpiece 300 has, for example, external threads.

When the workpiece 200 is assembled with the workpiece 300, the central axis 200a of the workpiece 200 must be aligned with the central axis 300a of the workpiece 300 to properly lock the outer threads 210 of the workpiece 200 with the inner threads 310 of the workpiece 300. However, as shown in fig. 1, during the locking process of the workpiece 200 and the workpiece 300, horizontal eccentricity occurs, and the workpiece 200 and the workpiece 300 cannot be locked, and may cause tooth slipping, tooth breakage, and the like.

Referring to fig. 2, a schematic diagram of

workpieces

200, 300 according to another embodiment is shown. In another embodiment, during the locking process of the workpiece 200 and the workpiece 300, the workpiece 200 and the workpiece 300 may be locked together due to the eccentric inclination, and the locking may not be performed, which may cause the occurrence of tooth slipping and tooth breaking.

Referring to fig. 3, a schematic diagram of a workpiece rotation assembly system 100 according to an embodiment is shown. The workpiece rotation assembly system 100 includes a rotation table 110, a jig 120, a jig 130, a slide 140, a fixing base 150, an elastic element 160, a pressure detector 170 and a controller 180.

The turntable 110 includes a motor 111 and a platform 112. The motor 111 has a rotating shaft 111 a. The motor 111 drives the platform 112 to horizontally rotate around the rotation shaft 111 a. The motor 111 is, for example, a servo motor, a stepping motor (servo stepping motor), an induction motor, a brushless motor, a torque motor (DD motor), a linear motor, or the like. The motor 111 is mainly used to drive the workpiece 200 to rotate relative to the workpiece 300 when locked to the workpiece 300, so that the outer threads 210 of the workpiece 200 are screwed into the inner threads 310 of the workpiece 300. In an embodiment, the driving stroke of the motor 111 may be designed according to the number of turns of the outer threads 210 or the inner threads 310.

The platform 112 is used for carrying the fixture 120. The fixture 120 is used for fixing the workpiece 200. The fixture 120 is, for example, a clamp or an elastic ferrule. For example, the fixture 120 may be a three-jaw fixture or a two-jaw fixture. The inner edge of the fixture 120 may have a circular arc surface, which may have a substantially uniform radius with the outer edge surface of the workpiece 200 in the locked state to fix the workpiece 200 therein. Alternatively, the jig 120 may be an elastic collar having a circular groove so that the workpiece 200 can be fixed in the circular groove.

In addition, the height of the fixture 120 is lower than that of the workpiece 200, so that the outer screw threads 210 can be exposed outside the fixture 120. The fixture 120 can not only carry the workpiece 200, but also keep the central axis 200a of the workpiece 200 consistent with the rotation axis 111 a. In this way, when the motor 111 drives the stage 112 to rotate about the rotation axis 111a, the workpiece 200 can rotate about the central axis 200 a. The number of rotations of the workpiece 200 can be matched with the number of rotations of the motor 111.

The fixture 130 is used for fixing the workpiece 300. The jig 130 and the jig 120 are disposed at opposite positions. The fixture 130 is, for example, a clamp or an elastic ferrule. For example, the fixture 130 may be a three-jaw fixture or a two-jaw fixture. The inner edge of the fixture 130 may have a circular arc surface, and the circular arc surface may have a radius identical to that of the outer edge surface of the workpiece 300 in the locked state. Alternatively, the jig 130 may be an elastic collar having a circular groove so that the workpiece 300 can be fixed in the circular groove.

In addition, the central axis 130a of the jig 130 is aligned with the central axis 300a of the workpiece 300 and does not deviate. When the motor 111 drives the workpiece 200 to rotate, the jig 130 fixes the workpiece 300 so that the workpiece 300 does not rotate, so that the workpiece 200 can be screwed into the workpiece 300.

The slide 140 is, for example, a biaxial slide, a floating platform, an X-Y slide, a cross slide, a multi-rail assembly with staggered arrangement, a friction slide assembly, etc. The slider 140 is a device that allows the slider to slide in at least two specific directions when subjected to a force. In the present embodiment, the sliding base 140 includes a first sliding block 141, a second sliding block 142 and a base 143.

The first slider 141 is disposed on the base 143 and can slide along a first direction D1 with respect to the base 143. The second slider 142 is connected to the first slider 141 and can slide along a second direction D2 with respect to the first slider 141. The first direction D1 and the second direction D2 are substantially perpendicular to the rotation axis 111a of the turntable 110. The first direction D1 and the second direction D2 are substantially perpendicular to each other. In another embodiment, the first direction D1 and the second direction D2 may form an angle of 30 degrees, 45 degrees or 50 degrees. The jig 130 is connected to the second slider 142. That is, the jig 130 may form the degree of freedom of the first direction D1 with respect to the base 143 through the first slider 141; the jig 130 may form a degree of freedom in the second direction D2 with respect to the base 143 through the second slider 142. Therefore, the jig 130 has two degrees of freedom, and the workpiece 300 clamped thereon also has two degrees of freedom. In this example, the two directions can refer to two mutually perpendicular axial directions in the horizontal direction, and the workpiece 300 can freely slide along the first direction D1 and the second direction D2 under the condition of nearly zero resistance. The term free sliding refers to a state that is not driven by the electric control element to precisely control the coordinates, such as directly or indirectly precisely controlling the stroke distance or position of the motor all the way, i.e. not free sliding. Thus, for example, the design of drive-by-wire slides or belt-driven devices on the market is not the carriage 140 of the present invention, if it does not allow uncontrolled free sliding of the workpiece 300 for at least a portion of the time.

Since the workpiece 300 can have two degrees of freedom in two directions, the workpiece 300 can be automatically moved to an appropriate position even when the central axis 300a of the workpiece 300 is slightly offset with respect to the central axis 200a of the workpiece 200.

The fixing base 150 is coupled to a power source, such as an electric motor, and can move toward the jig 120, so that the jig 130 moves toward the jig 120. The fixing base 150 can fix the slider 140. During the process of gradually moving the fixing base 150 downwards, even if the central axis 300a of the workpiece 300 is slightly offset relative to the central axis 200a of the workpiece 200, when the workpiece 300 abuts against the workpiece 200, the reaction force of the abutment is converted into a force of horizontal movement, so that the workpiece 300 moves along with the two directional degrees of freedom provided by the sliding base 140 until the central axis 300a of the workpiece 300 is aligned with the central axis 200a of the workpiece 200. In this way, the workpiece 300 can be locked to the workpiece 200 accurately without causing tooth slipping or tooth chipping.

The elastic member 160 is a resilient member such as a spring or a hydraulic cylinder. The elastic element 160 is connected to the fixing base 150, so that the jig 130 can move in a direction toward the jig 120 and allow a certain amount of deformation.

The pressure detector 170 is a widely used element in the industry, and there are many types, such as a piezoelectric type pressure detector 170 as an example. The pressure detector 170 is connected to the elastic element 160, and when the fixing base 150 descends to make the workpiece 300 contact the workpiece 200, the elastic element 160 is pressed, and the pressure signal S1 is changed (increased or decreased). The controller 180 can infer the degree to which the elastic member 160 is compressed according to the pressure signal S1.

When it is known that the elastic element 160 is pressed to a specific degree, the controller 180 outputs a control signal S2 to actuate the motor 111 to rotate by the predetermined stroke. As a result, when the workpiece 300 contacts the workpiece 200, the motor 111 rotates by a predetermined stroke, so that the workpiece 200 can be smoothly screwed into the workpiece 300. However, the pressure detector 170 may be omitted to control the rotation of the motor and the elevation of the fixing base 150 by a predetermined stroke, and the adjustment may achieve the same effect to a certain extent. In addition, the controller 180 may be a computer, microcontroller, electronic circuit, or any other known electronic component or system capable of performing the above-described functions.

The following further illustrates how the workpiece 200 can be smoothly screwed into the workpiece 300. Referring to fig. 4-6, a process of screwing the workpiece 200 into the workpiece 300 is illustrated. As shown in fig. 4, the central axis 300a of the workpiece 300 is slightly offset relative to the central axis 200a of the workpiece 200. Then, as shown in fig. 5, the workpiece 300 gradually moves toward the workpiece 200, and when the workpiece 300 contacts the workpiece 200, the jig 130 and the workpiece 300 automatically horizontally slide to the position shown in fig. 5 by two degrees of freedom provided by the slide 140. In this way, the central axis 300a of the workpiece 300 can be automatically aligned with the central axis 200a of the workpiece 200. Then, as shown in fig. 6, when the workpiece 300 continues to move toward the workpiece 200, the elastic element 160 is pressed, so that the pressure signal S1 becomes larger, and the controller 180 immediately outputs the control signal S2 to actuate the motor 111 to rotate for a number of turns according to the pressure signal S1. The workpiece 300 continues to move toward the workpiece 200 and is expected to rotate with the workpiece 200 so that the workpiece 200 can be locked into the workpiece 300.

Referring to fig. 7, a schematic diagram of a carriage 140' according to another embodiment is shown. In another embodiment, the slide 140 'includes a first platform 141', a second platform 142 'and a rubber ring 143'. The rubber ring 143' is deformable to provide sliding movement in at least two particular directions. The present disclosure is not limited to the above-mentioned embodiments of the sliding base 140, 140', and other mechanisms capable of sliding in at least two specific directions are also applicable to the embodiments of the present disclosure.

Through the two directional degrees of freedom provided by the sliders 140 and 141' of the above embodiments, even if the workpiece 200 and the workpiece 300 are horizontally or obliquely eccentric, the relative position/angle between the workpiece 200 and the workpiece 300 can be automatically adjusted, so that the locking process will not cause slipping, breaking, etc.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A workpiece rotation assembly system, comprising:

a rotating table;

the first clamp is arranged on the rotating platform;

the double-shaft sliding seat comprises a base, a first sliding block and a second sliding block, wherein the first sliding block is arranged on the base and slides along a first direction relative to the base, and the second sliding block is connected to the first sliding block and slides along a second direction relative to the first sliding block; and

and the second clamp is connected to the second sliding block.

2. The workpiece rotation assembly system of claim 1, wherein the first direction is substantially perpendicular to the second direction.

3. The workpiece rotation assembly system of claim 2, wherein the first direction and the second direction are each substantially perpendicular to a rotation axis of the rotary stage.

4. The workpiece rotation assembly system of claim 1, further comprising:

and the fixed seat is connected with the double-shaft sliding seat and can move the second clamp along the direction close to and far away from the first clamp.

5. The workpiece rotation assembly system of claim 4, further comprising:

the elastic element is connected with the fixed seat;

a pressure detector for sensing a pressure signal of the elastic element; and

and the controller can output a control signal according to the pressure signal so as to actuate a motor of the rotating platform.

6. A workpiece rotation assembly system, comprising:

a motor having a rotating shaft;

a first fixture linked with the rotating shaft for fixing a first workpiece;

a fixed seat;

the sliding seat is connected with the fixed seat and slides along at least two specific directions; and

the second jig is linked with the sliding seat and used for fixing a second workpiece;

the second jig and the first jig are arranged at opposite positions.

7. The workpiece rotation assembly system of claim 6, wherein the at least two particular directions are substantially perpendicular to each other.

8. The workpiece rotation assembly system of claim 6, wherein the at least two particular directions are substantially perpendicular to the axis of rotation of the motor.

9. The workpiece rotation assembly system of claim 6, wherein the carriage includes a free-sliding state.

10. The workpiece rotation assembly system of claim 9, further comprising:

the elastic element is connected with the fixed seat;

a pressure detector for sensing a pressure signal of the elastic element; and

and the controller is used for outputting a control signal according to the pressure signal so as to actuate the motor.