TWI573943B - Parallel mounting mechanism - Google Patents

Description

Side linkage

The present invention is a side-linking mechanism, and more particularly to a side-linking mechanism applied to a linear module and its motor shaft, and providing a stable transmission function of both.

Linear modules are common transmission platforms in modern industrial or semiconductor equipment. They feature high-speed and precise motion and positioning performance, high strength and excellent load capacity, making linear modules almost the core components of all precision instruments. Linear modules in turn include different categories and many components. For example, linear slides with ball screws are a large category of applications. This combination can drive the linear slide through the ball screw and carry various mechanical loads other than the drive by the linear slide.

Although the ball screw in the aforementioned linear module mainly plays the role of power transmission, its operating state directly affects the performance of the overall linear module, especially the shaft straightness and the mobility of the ball screw in the transmission output are very important. This will directly relate to whether the roller screw and the linear slide can be well matched and the service life of the entire linear module.

In the prior art, the development of linear modules mainly focuses on the line. The body of the sexual slides. In contrast, there are fewer related innovations in conjunction with linear slides. For example, the ball screw is fixed in the linear module and driven by the motor, and then the linear slide is linked through it. However, the ball screw of the conventional linear module is often deflected due to the transmission load of the motor during the transmission process, which indirectly causes wear and displacement control between the linear slide and the inaccurate displacement control. There is no stable and reliable connection mechanism between the linear slide and the ball screw, but the existing installation conditions fail to ensure the matching function of the two.

Based on the improvement of the conventional linear module due to the lack of installation precision, the present invention proposes a side-linking mechanism, which prevents the screw from deflecting by the additional bearing seat and the joint member externally connected to the screw, thereby ensuring that the linear module is operating. Maintain high precision during the process. In addition, with the movable motor pad to adjust the tightness of the transmission components, the drive simplification of the linear module is well guaranteed, and the tightness adjustment does not affect the deflection of the screw.

According to an embodiment of the present invention, a side joint mechanism is provided, which is coupled to a linear module and a motor shaft. The side joint mechanism includes a bearing seat, a joint member and a pulley set. The bearing housing is fixed to the linear module, and the bearing housing includes a bearing that abuts thereon. The joint member is also connected to the linear module, and the joint member is correspondingly pivoted to the bearing seat against the bearing. The pulley assembly is disposed on the joint member and the motor shaft, and the pulley group is configured to rotate the joint member of the motor shaft to interlock the linear module.

In this embodiment, because the pulley set does not directly drive the line The module is connected to the joint mode, and the joint is limited by the pivoting of the joint to ensure that the linear module is not deflected when it is driven.

In an embodiment, the bearing housing may include an engaging hole, the engaging member may protrude from a shoulder portion and penetrate the engaging hole, and the bearing is in contact with the engaging hole and supports the shoulder of the engaging member, thereby positioning the engaging member The location. The linear module may include a screw, and the engaging member is sleeved on the screw, and the screw is coaxially driven by the engaging member when the pulley set rotates. The aforementioned pulley set may be located between the bearing housing and the linear module, in other words, the pulley set drives the joint member between the bearing housing and the linear module. In this way, the two ends of the joint member respectively abut against the bearing housing and the linear module to maintain the rotation shaft fixed, and increase the mounting precision of the side joint mechanism.

According to an embodiment of the present invention, a side joint mechanism is provided, which is connected to a linear module and a motor shaft. The side joint mechanism includes a base, a bearing seat, a joint member, a pulley set and a motor pad. The base is connected to one side of the linear module and has an adjustment space for the motor shaft through displacement. The base corresponding to the adjustment space is further provided with at least one adjustment track, the adjustment track has an extending axial direction, and the base is provided. An adjustment element corresponding to the extension axially reciprocally adjusts the displacement. The bearing housing is fixed to the base. The joint is connected to the linear module and pivoted to the bearing housing. The pulley assembly is disposed on the joint member and the motor shaft, and the pulley group is configured to rotate the joint member of the motor shaft to interlock the linear module. The motor pad is pivoted by the motor shaft and disposed between the pulley set and the motor shaft, and the motor pad is connected with the adjusting component, and the motor pad and the pulley set are located in the adjustment space, and are adjusted by the adjusting component with respect to the adjusting rail. Move to adjust the pulley set displacement back and forth.

In this embodiment, the bearing housing may include a bearing that abuts between the bearing housing and the engaging member, and the bearing housing may have an engaging hole, the engaging member may protrude from a shoulder and penetrate the engaging hole, and the bearing A mating engagement with the aforementioned engaging hole to support the shoulder of the engaging member. The linear module can include a screw, and the engaging member can abut between the bearing and the base and sleeve the screw, that is, the transmission of the linear module is transmitted through the joint outside the base, and the pulley set is not in direct contact. Screw. As mentioned in the first embodiment above, the pulley set can be located between the bearing housing and the linear module. In an embodiment, the base may include a recess, and the bearing housing may include a connecting portion corresponding to the recess, and the connecting portion is provided with a guiding surface for aligning and connecting the recess. Thereby, in addition to ensuring the straightness by the indirect conduction of the joint member, the combination of the bearing housing and the joint member is used to stably connect the bearing housing, the joint member, the base, and the linear module to each other. In addition, the adjusting component may include a screw and a through hole corresponding to one of the motor pads, and the screw penetrates the through hole to abut the motor pad, and the axial direction of the through hole is parallel to the extending axis, according to the insertion. The amount is adjusted to adjust the translation of the motor pad relative to the base. In an embodiment, the through hole may also have an internal thread, and the screw is screwed to the internal thread, and the motor pad and the base are adjusted by a screw lock. In addition, the adjusting component may also include only one screw, and the motor pad includes a screw hole, and the screw is threaded on the base and screwed with the screw hole, so as to adjust the function of the motor pad.

100‧‧‧Shelter

200‧‧‧ bearing housing

201‧‧‧Join hole

210‧‧‧Connecting Department

211‧‧‧ Guide surface

220‧‧‧ bearing

300‧‧‧Joint parts

301‧‧‧ shoulder

400‧‧‧ Pulley set

500‧‧‧Base

510‧‧‧ Groove

520‧‧‧Adjustment of orbit

530‧‧‧Adjustment components

531‧‧‧screw

532‧‧‧through hole

600‧‧‧Motor pad

610‧‧‧ screw holes

L‧‧‧ linear module

M‧‧‧Motor shaft

R‧‧‧ screw

S‧‧‧Adjustment space

1 is a perspective view showing a side mechanism of an embodiment of the present invention; FIG. 2 is an exploded view of the side mechanism of FIG. 1; and FIG. 3 is a view showing a connection of the side mechanism of FIG. The portion and the groove are divided into sectional views; and the fourth drawing is a sectional view showing the combination of the bearing seat and the base of the side mechanism of Fig. 1.

Please refer to FIG. 1 , which is a perspective view of a side joint mechanism 100 according to an embodiment of the present invention. The side joint mechanism 100 includes a bearing housing 200, a joint member 300, a pulley set 400, a base 500, and a motor pad 600. The side joint mechanism 100 is located on a side of a linear module L and a motor shaft M, and is connected by the base 500. The bearing housing 200 is indirectly fixed to the linear module L through the base 500. The engaging member 300 is pivoted and received inside the bearing housing 200, and the engaging member 300 is in turn connected to the linear module L. The pulley set 400 includes two pulleys respectively mounted on the linear module L and the motor shaft M. The motor shaft M drives the joint 300 to rotate by the pulley set 400, and indirectly links the linear module L to which the joint 300 is connected. The base 500 is provided with an adjustment member 530 corresponding to the thickness direction of the motor pad 600 for lateral adjustment of the motor pad 600 relative to the base 500, thereby changing the tightness of the pulley set 400.

Please refer to FIG. 2, which is an exploded view of the side joint mechanism 100 of FIG. Referring to FIG. 2, the bearing housing 200 includes an engaging hole 201 and a bearing 220, and the bearing 220 is tightly fitted against the engaging hole 201, as described above. The engaging member 300 has a shoulder 301 that fits the bearing 220. By the support of the bearing 220, the shoulder 301 can be exposed to the engaging hole 201 and pivoted relative to the bearing housing 200. The linear module L includes a screw R connected to the joint member 300 at the end, and the joint member 300 and the motor shaft M are located on the front side of the base 500 and are respectively connected to the pulley set 400 to form a linked relationship.

As shown in Fig. 2, with respect to the interlocking relationship of the engaging member 300 and the pulley set 400, the engaging member 300 can have a male key (not numbered) in cooperation with the pulley set, ensuring that the engaging member 300 and the pulley set 400 are engaged with each other. In addition, the engaging member 300 may be modified to fit tightly with the pulley set 400, or a bolt extending through the engaging member 300 in the radial direction of the pulley set 400 may be tightly fixed. Since the number of alternatives is extremely large, the manner in which the engaging member 300 and the pulley set 400 are fixed is not limited herein.

Since the screw R is not directly driven by the pulley set 400, the load applied during the transmission of the pulley set 400 is received by the engaging member 300, and because the engaging member 300 abuts between the bearing 220 and the base 500. And its axial length is much smaller than the screw R and is not easily affected by the bending moment, which can greatly improve the deflection problem caused by the transmission. Moreover, the pulley set 400 is disposed between the bearing housing 200 and the linear module L. In addition to convenient maintenance, it can also benefit from the stable effect provided by the bearing 220.

In the part of the motor shaft M, the base 500 is provided with an adjustment space S for the motor shaft M and an adjustment rail 520. The motor shaft M passes through the motor pad 600, and the front end of the motor shaft M is disposed in the adjustment space S. Move left and right as shown in Figure 2. The adjustment rail 520 has an extended axial direction (not shown) corresponding to the adjustment space S, and the adjustment rail 520 is used for locking the motor pad 600, when the motor pad 600 is positioned on the adjustment rail 520, since the motor shaft M is limited by the motor pad 600, the motor shaft M is also fixed and can no longer move in the adjustment space S. The adjusting element 530 can be implemented by a screw 531 and a through hole 532. The through hole 532 is disposed at a side of the base 500, and the axial direction thereof is parallel to the extending axial direction of the adjusting rail 520. When the motor pad 600 is attached to the base 500, the motor pad 600 is aligned with the position of the through hole 532, and the screw 531 can be reciprocally adjusted correspondingly to extend the axial direction and push the motor pad 600 to the set position. In the present embodiment, the through hole 532 may have an internal thread, and the screw 531 is screwed to the internal thread, and the through hole 532 may be used to adjust the motor pad 600. Alternatively, when the through hole 532 is directly penetrated, the motor pad can also be provided with a screw hole 610. The screw 531 directly passes through the base 500 to screw the screw hole 610, and the function of adjusting the motor pad 600 can also be exerted.

With this arrangement, the adjustment rail 520 and the through hole 532 are engaged with each other. When the degree of tightness of the pulley set 400 is to be adjusted, the motor pad 600 can be loosened from the adjustment rail 520, and the position of the motor shaft M can be adjusted by the screw 531. After that, the motor pad 600 is re-locked, and the transmission condition between the linear module L and the motor shaft M is quickly fine-tuned.

Please refer to FIG. 3 and FIG. 4 . FIG. 3 is an exploded cross-sectional view showing the connecting portion 210 and the groove 510 of the side joint mechanism of FIG. 1 , and FIG. 4 is a view showing the bearing of the side joint mechanism 100 of FIG. 1 . A cross-sectional view of the base 200 and the base 500 is combined. In order to make the joint member 300 in Fig. 1 accurately positioned when it is mounted, the base 500 may include a groove 510, and the bearing block 200 may include a connecting portion 210 corresponding to the shape of the groove 510, and the connecting portion 210 has a guiding surface 211 in pairs The groove 510 is connected, and the guiding surface 211 is a slope. By the provision of the guiding surface 211, the groove 510 and the connecting portion 210 can be designed to closely fit each other, ensuring that the engaging member 300 is stably positioned in both axial and radial directions. In addition, as can be seen from FIG. 4, the screw R is engaged with another bearing (not labeled) in the linear module L, and the engaging member 300 is fitted with the bearing 220, so that the screw R and the engaging member 300 can maintain accurate shaft straightness. And the axes of the two are always coincident, and thus rotate stably.

It can be seen from the above disclosed embodiments that the present invention at least includes the following advantages. First, the side mechanism of the present invention provides a guiding element of a screw of a linear module during transmission. With the arrangement of the engaging member, the linear module is not easy to be A skew problem occurs in the drive. Secondly, the shoulder of the joint can be directly used as the end of the screw, and the design of the screw need not be changed according to various situations. Thirdly, the base acts as a bridge element of the motor shaft and the linear module, so that the pulley set can be disposed outside the side joint mechanism, and the pulley set abuts between the base and the bearing to provide transmission stability. Fourth, by adjusting the track and adjusting the components, the distance between the motor shaft and the linear module can be quickly adjusted, thereby changing the tightness of the pulley set. Fifthly, the guiding surface and the groove cooperate with each other, so that the engaging member can ensure accurate positioning in the radial direction in addition to positioning in the axial direction, thereby improving the mounting accuracy.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and the present invention can be modified and modified without departing from the spirit and scope of the present invention. The scope is subject to the definition of the scope of the patent application attached.

100‧‧‧Shelter

200‧‧‧ bearing housing

201‧‧‧Join hole

210‧‧‧Connecting Department

220‧‧‧ bearing

300‧‧‧Joint parts

301‧‧‧ shoulder

400‧‧‧ Pulley set

500‧‧‧Base

510‧‧‧ Groove

520‧‧‧Adjustment of orbit

530‧‧‧Adjustment components

531‧‧‧screw

532‧‧‧through hole

600‧‧‧Motor pad

610‧‧‧ screw holes

M‧‧‧Motor shaft

R‧‧‧ screw

S‧‧‧Adjustment space

Claims (8)

A side joint mechanism is connected to a linear module and a motor shaft. The side joint mechanism comprises: a base connected to one side of the linear module, the base comprises a groove and the motor shaft is disposed to be displaced An adjustment space, and the base is provided with at least one adjustment track corresponding to the adjustment space, the adjustment track has an extending axial direction, and the base is provided with an adjusting element corresponding to extending axially reciprocating adjustment displacement, the adjusting element comprises a a bearing; fixed to the base, the bearing housing includes a connecting portion corresponding to the groove, the connecting portion has a guiding surface for aligning and connecting the groove, and the guiding surface is a bevel; Connecting the linear module, and the engaging member is pivotally mounted on the bearing seat; a pulley set is mounted on the engaging member and the motor shaft, the pulley set is configured to rotate the engaging member by the motor shaft, thereby interlocking The linear module; and a motor pad, comprising a screw hole, the screw penetrating the base and screwing the screw hole, the motor pad for pivoting the motor shaft and disposed on the pulley set and the motor shaft between, The motor is connected to the adjustment plate element, and backing plate of the motor and the pulley assembly to adjust the limit of the space is located and the adjusting element relative to the rail traction translational adjustment, thereby adjusting the reciprocating pulley set of displacement. The side-linking mechanism of claim 1, wherein the bearing housing comprises a bearing that abuts between the bearing housing and the engaging member. The side joint mechanism of claim 2, wherein the bearing seat has an engaging hole, the engaging member protrudes into a shoulder portion and penetrates the engaging hole, and the bearing fits and supports the engaging hole The shoulder. The side-linking mechanism of claim 2, wherein the engaging member abuts between the bearing and the base. The side-linking mechanism of claim 1, wherein the pulley set is located between the bearing housing and the linear module. The side-linking mechanism of claim 1, wherein the adjusting component comprises a through hole corresponding to a position of the motor pad, and the screw penetrates the through hole to abut the motor pad. The side-linking mechanism of claim 6, wherein the axial direction of the through hole is parallel to the extending axial direction. The side joint mechanism of claim 6, wherein the through hole has an internal thread, and the screw is screwed to the internal thread.