CN216681336U - Small-distance synchronous belt lifting device - Google Patents

Abstract

The utility model discloses a small-distance synchronous belt lifting device which comprises a speed reducing motor, wherein an output shaft of the speed reducing motor is connected with one end of a transmission screw rod through a coupler, two ends of the transmission screw rod are supported through a support, two movable plates which are parallel to each other and symmetrically arranged are arranged on two sides of a nut which is in threaded connection with the transmission screw rod, a rotating roller is arranged on each movable plate, the rotating rollers are located in a guide groove on a guide plate, the nut, the two movable plates, the rotating rollers and the guide plate are in two groups and symmetrically arranged on the transmission screw rod, a bracket for supporting a workpiece is located on each rotating roller, the middle of the contact surface of the bottom surface of the bracket and the rotating rollers is an inclined surface, and two sides of the bracket are provided with limiting devices. The speed reducing motor is fixed through a fixing frame. The device has the advantages of simple and compact structure, convenient spatial arrangement, easy maintenance, stable operation when lifting the bracket and the workpiece, and great advantage compared with the traditional oil cylinder and guide rod lifting structure.

Description

Small-distance synchronous belt lifting device

Technical Field

The utility model relates to a small-distance synchronous belt lifting device applied to a three-axis boring machine, which is mainly used for lifting a workpiece to a certain height before a cutter is fed in and out during boring a hole diameter so as to prevent the cutter and the workpiece from interfering with each other.

Background

A three-shaft boring machine is a multi-gear simultaneous boring processing device which is commonly used for a crankshaft hole and a camshaft hole of an automobile engine cylinder body, a workpiece to be processed is placed on a bracket during processing, a cutter needs to be fed in and out of the workpiece during multi-gear boring, and the workpiece and the cutter frequently generate a mutual interference phenomenon during the feeding in and out of the cutter, so that the workpiece or the cutter is damaged. At present, an oil cylinder is adopted to be matched with a guide rod structure to lift a bracket and a workpiece, namely, the bracket and the workpiece are lifted by a certain height before a cutter is fed in and out, so that cutter relieving action is completed. Has the defects of complex structure, inconvenient spatial arrangement, difficult maintenance, unstable action and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide the small-distance synchronous belt lifting device which is simple in structure, flexible, reliable and stable in action, convenient in spatial arrangement and easy to maintain, ensures that a multi-gear boring hole can lift a workpiece to a certain height before a cutter is fed in and out, and overcomes the defects of the prior art.

The utility model discloses a small-distance synchronous belt lifting device which comprises a speed reducing motor, wherein an output shaft of the speed reducing motor is connected with one end of a transmission screw rod through a coupler, two ends of the transmission screw rod are supported through a support, two movable plates which are parallel to each other and symmetrically arranged are arranged on two sides of a nut which is in threaded connection with the transmission screw rod, a rotating roller is arranged on each movable plate, the rotating rollers are located in a guide groove on a guide plate, the nut, the two movable plates, the rotating rollers and the guide plate are in two groups and symmetrically arranged on the transmission screw rod, a bracket for supporting a workpiece is located on each rotating roller, the middle of the contact surface of the bottom surface of the bracket and the rotating rollers is an inclined surface, and two sides of the bracket are provided with limiting devices. The speed reducing motor is fixed through a fixing frame.

The small-distance synchronous belt lifting device comprises a fixed frame, a support and a guide plate, wherein the fixed frame, the support and the guide plate are fixedly arranged on a workbench of a three-axis boring machine through bolts, a cutter is moved upwards by the small-distance synchronous belt lifting device to a certain height before being fed and discharged, cutter relieving action is completed, firstly, a speed reducing motor acts, a transmission screw rod is driven to rotate through a coupler, a nut on the transmission screw rod moves to drive movable plates on two sides to move, at the moment, a rotating roller rolls in a guide groove on the guide plate, meanwhile, the rotating roller is in contact with an inclined surface of an upper bracket to push the bracket to move upwards by a certain height, and the bracket is limited by a limiting piece and does not move in the horizontal direction under the pushing of the rotating roller, so that the bracket and a workpiece on the bracket are ensured to move upwards and downwards, and the workpiece is pushed to move upwards. The threads matched with the nuts at the two ends of the transmission screw rod are left-handed threads and right-handed threads, and the threads move relatively when the workpiece is lifted. The device has the advantages of simple and compact structure, convenient spatial arrangement, easy maintenance, stable operation when lifting the bracket and the workpiece, and larger advantage compared with the traditional oil cylinder and guide rod lifting structure.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic top view of fig. 1.

Fig. 3 is a sectional structure view of the bracket shown in fig. 1.

Detailed Description

As shown in fig. 1, 2 and 3: the small-distance synchronous belt lifting device comprises a speed reducing motor 1, wherein an output shaft of the speed reducing motor 1 is connected with one end of a transmission screw rod 3 through a coupler 2. Two ends of the transmission screw rod 3 are supported by the support 4, and a sliding bearing or a rolling bearing can be arranged between the transmission screw rod 3 and the support 4. Two movable plates 5 which are parallel to each other and are symmetrically arranged are arranged on two sides of a nut which is in threaded connection with the transmission screw rod 3, and a rotating roller 6 is arranged on each movable plate 5 through a rotating shaft. The turning roller 6 is seated in a guide groove on the upper surface of the guide plate 7. Wherein the screw, the two movable plates 5, the rotating rollers 6 and the guide plates 7 are two groups and are symmetrically arranged on the transmission screw rod 3. Two brackets 8 for supporting the workpiece are respectively positioned on the rotating rollers 6, and the middle parts of the contact surfaces of the bottom surfaces of the brackets 8 and the rotating rollers 6 are inclined surfaces 10. The bracket 8 is provided with stop means 9 on both sides. The reduction motor 1 is fixed by a fixing frame 11.

During installation, the fixed frame 11, the support 4 and the guide plate 7 are fixedly installed on a workbench of a three-axis boring machine through bolts, and the workpiece 12 is installed on the bracket 8. In the boring processing process, a workpiece is moved upwards by a certain height by using the device before a cutter is fed and sent out to finish cutter relieving action, firstly, the speed reducing motor 1 acts, the transmission screw rod 3 is driven to rotate through the coupler 2, a nut on the transmission screw rod 3 moves to drive the movable plates 5 on two sides to move, at the moment, the rotating roller 6 rolls in a guide groove on the guide plate 7, meanwhile, the rotating roller 6 is in contact with an inclined surface 10 of the bracket 8 on the upper surface to push the bracket 8 to move upwards by a certain height, the bracket 8 is limited by the limiting piece 9, and does not move in the horizontal direction under the pushing of the rotating roller 6, so that the bracket 8 and the workpiece 12 on the bracket 8 are ensured to move upwards, and the workpiece 12 is further pushed to move in the vertical direction. The threads matched with the nuts at the two ends of the transmission screw rod 3 are left-handed and right-handed threads, and the threads move relatively when the workpiece is lifted. The device has the advantages of simple and compact structure, convenient spatial arrangement, easy maintenance, stable operation when lifting the bracket and the workpiece, and larger advantage compared with the traditional oil cylinder and guide rod lifting structure.

Claims (1)

1. The utility model provides a device is lifted up to small distance hold-in range which characterized in that: comprises a speed reducing motor (1), an output shaft of the speed reducing motor (1) is connected with one end of a transmission screw rod (3) through a coupler (2), two ends of the transmission screw rod (3) are supported through a support (4), two movable plates (5) which are parallel to each other and are symmetrically arranged are arranged at two sides of a nut which is in threaded connection with the transmission screw rod (3), a rotating roller (6) is arranged on each movable plate (5), the rotating rollers (6) are positioned in guide grooves on the guide plates (7), the screw, the two movable plates (5), the rotating roller (6) and the guide plate (7) are symmetrically arranged on the transmission screw rod (3) in two groups, a bracket (8) for supporting a workpiece is located on the rotating roller (6), the middle of the contact surface of the bottom surface of the bracket (8) and the rotating roller (6) is an inclined plane (10), limiting devices (9) are arranged on two sides of the bracket (8), and the speed reduction motor (1) is fixed through a fixing frame (11).

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