CN204339342U - A kind of, longitudinal automatic centering pressing positioner horizontal to processing work - Google Patents

Abstract

The utility model relates to an automatic centering and pressing positioning device for horizontally and vertically processing workpieces, which belongs to the technical field of processing machinery. The utility model is composed of a processing table, a workpiece conveying guide rail, a longitudinal pressing mechanism, a transverse centering clamping mechanism and a servo motor. Wherein, the longitudinal pressing mechanism is composed of a pressing mechanism base, a telescopic rod, a pressing block and a distance sensor. The horizontal centering clamping mechanism mainly includes a lead screw with opposite screw threads at both ends, two sets of symmetrical clamping plates on the left and right, and nuts connecting the lead screw and clamping plates; the nut and the lead screw are threaded together Yes, when the servo motor drives the screw to rotate, the screw drives the nuts at both ends to move towards or back through the thread transmission. The utility model can make the workpiece be centered and pressed automatically in the horizontal direction and the longitudinal direction during processing, so that the workpiece is fixed so that the workpiece is more stable during processing and the force is more uniform everywhere.

Description

A horizontal and vertical automatic centering and pressing positioning device for processing workpieces

technical field

The utility model relates to an automatic centering and pressing positioning device for horizontally and vertically processing workpieces, which belongs to the technical field of processing machinery.

Background technique

The positioning of the workpiece during machining has a great influence on the machining accuracy of the workpiece. When the existing machine tool fixes the position of the workpiece, it usually only considers the lateral positioning and ignores the longitudinal positioning. In order to process high-quality and high-precision products, in addition to high-quality tools and advanced control systems, the positioning of the workpiece also plays an indispensable role. Generally, the horizontal positioning of the workpiece will be considered during processing, and the vertical direction will be ignored. In the absence of longitudinal positioning, some workpieces will appear pitching, swinging, and uneven force during processing. Based on this situation, the workpiece can not only be centered horizontally on the left and right, but also centrally positioned in the longitudinal direction on the processing machine tool. Compared with the previous positioning, the workpiece is more stable, and the processing accuracy and quality will be better.

Contents of the invention

The technical problem to be solved by the utility model is to solve the problem that the general workpiece only considers the lateral positioning while ignoring the longitudinal positioning during processing. The utility model provides a device which enables workpieces not only to be automatically centered and positioned in the horizontal direction, but also to be centered and positioned in the longitudinal direction on the processing machine tool. Compared with the previous positioning, the workpiece is more stable, and the machining accuracy and quality will be better.

The technical solution of the utility model is: a horizontal and vertical automatic centering and pressing positioning device for workpieces, which is characterized in that: the device includes a processing table 1, a workpiece transport guide rail 2, a distance sensor 4, a pressing block 5, Telescopic rod 6), pressing base 7, servo motor 8, leading screw 9, nut 10, clamping plate 11. The workpiece transportation guide rail 2 is located on the processing table 1; the workpiece 3 is placed on the workpiece transportation guide rail 2 during work; the distance sensor 4, the compression block 5, the telescopic rod 6), and the compression base 7 constitute a longitudinal compression mechanism, wherein, The distance sensor 4 is positioned at the top of the compression block 5, and the telescopic rod (6) is connected with the compression block 5 and the compression base 7, and is controlled by the servo motor 8 to expand and contract up and down, and the length of the telescopic rod 6 is the width of the workpiece delivery guide rail 2. One-half of the workpiece, because the workpiece is first automatically adjusted by the horizontal centering mechanism and placed in the middle of the guide rail, the pressing block 5 must be located directly above the centerline of the workpiece. The pressing base 7 is fixed on the edge of the processing table 1; Lead screw 9, nut 10, and clamping plate 11 form a horizontal centering clamping mechanism, wherein lead screw 9 is not a common lead screw in the factory. A nut 10 is matched respectively, and what is fixedly connected with the nut 10 is a clamping plate 11 , and the rotation of the leading screw 9 is controlled by a servo motor 8 .

When in use, place one side of the workpiece to be processed along a clamping plate, and start the servo motor to drive the screw to rotate. Since the threads at both ends of the screw rotate in opposite directions, the matching nut starts to move towards each other, and the nut is connected to it. The clamping plate is a whole, and the clamping plate in contact with the workpiece can drive the workpiece to move to the center line of the processing table. When the clamping plates on both sides are in close contact with the workpiece, the servo motor stops working. At this time The workpiece is already in the middle of the processing table (horizontally aligned); after the horizontal alignment is completed, the servo motor starts again to control the telescopic rod of the longitudinal compression mechanism to extend downward. When the distance sensor detects that the distance between it and the workpiece reaches the compression setting When the value is set, the servo motor stops working. At this point, the automatic centering and pressing positioning of the workpiece horizontally and vertically has been completed.

The beneficial effects of the utility model are:

(1) The left and right screw with opposite direction of rotation is used to directly drive the left and right fixtures to realize the centering movement of the workpiece. The structure is simple, the operation is convenient, and the precision is higher.

(2) This device realizes the centering and pressing of the upper surface of the workpiece, which makes the workpiece more stable when processing the workpiece, the force on the left and right is more uniform, and the finished product after processing has higher precision and better quality.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a front view of the utility model's longitudinal telescopic pressing mechanism;

Fig. 3 is a schematic diagram of the horizontal centering and pressing mechanism of the utility model;

In the figure: 1-processing table, 2-workpiece conveying guide rail, 3-processed part, 4-distance sensor, 5-pressing block, 6-telescopic rod, 7-pressing mechanism base, 8-servo motor, 9-wire Bar, 10-nut, 11-clamping plate.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described further.

Embodiment 1: As shown in Figure 1-3, a horizontal and vertical automatic centering and pressing positioning device for workpieces is characterized in that: the device includes a processing table 1, a workpiece transport guide rail 2, a distance sensor 4, a pressing Tight block 5, expansion rod 6), pressing base 7, servo motor 8, leading screw 9, nut 10, clamping plate 11. The workpiece transportation guide rail 2 is located on the processing table 1; the workpiece 3 is placed on the workpiece transportation guide rail 2 during work; the distance sensor 4, the compression block 5, the telescopic rod 6), and the compression base 7 constitute a longitudinal compression mechanism, wherein, The distance sensor 4 is positioned at the top of the compression block 5, and the telescopic rod (6) is connected with the compression block 5 and the compression base 7, and is controlled by the servo motor 8 to expand and contract up and down, and the length of the telescopic rod 6 is the width of the workpiece delivery guide rail 2. One-half of the workpiece, because the workpiece is first automatically adjusted by the horizontal centering mechanism and placed in the middle of the guide rail, the pressing block 5 must be located directly above the centerline of the workpiece. The pressing base 7 is fixed on the edge of the processing table 1; Lead screw 9, nut 10, and clamping plate 11 form a horizontal centering clamping mechanism, wherein lead screw 9 is not a common lead screw in the factory. A nut 10 is matched respectively, and what is fixedly connected with the nut 10 is a clamping plate 11 , and the rotation of the leading screw 9 is controlled by a servo motor 8 .

Embodiment 2: As shown in Figure 1-3, a kind of horizontal and vertical automatic centering and pressing positioning device for workpieces is composed of processing table 1, workpiece transport guide rail 2, distance sensor 4, pressing block 5, telescopic rod 6. It is composed of a pressing base 7, a servo motor 8, a lead screw 9, a nut 10 and a clamping plate 11. When working, first place one side of the workpiece 3 to be processed along the clamping plate 11 or the other side of the clamping plate that is symmetrical to it (this device is mainly suitable for workpieces with relatively flat and regular shapes such as cubes and cuboids); then start the servo The motor 8, the motor drives the lead screw 9 to rotate, because the screw threads at the two ends of the lead screw are in the opposite direction, the nut 10 matched with it starts to move towards the opposite direction with its symmetrical nut, and the nut and the clamping plate 11 connected to it are a whole, and the nut 10 is connected with it. The clamping plate that is in contact with the workpiece can drive the workpiece to move to the center line of the processing table together. When the clamping plates on both sides are in close contact with the workpiece, the servo motor stops working. At this time, the workpiece is already in the middle of the processing table (horizontal Already centered); After the horizontal centering is completed, the servo motor starts again, and the telescopic rod 6 that controls the longitudinal compression mechanism extends downward. When the distance sensor 4 detects that the distance between it and the workpiece reaches the compression set value, it Compression block 5 has been compressed with workpiece 3, and servo motor 8 stops working. At this point, the automatic centering and pressing positioning of the workpiece horizontally and vertically has been completed.

The specific implementation of the utility model has been described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned implementation. Various changes are made.

Claims (2)

1. A horizontal and vertical automatic centering and pressing positioning device for workpieces, which is characterized in that it includes processing table (1), workpiece transport guide rail (2), distance sensor (4), pressing block (5), telescopic Rod (6), pressing base (7), servo motor (8), lead screw (9), nut (10), clamping plate (11); workpiece transport rail (2) is located on the processing table (1) The distance sensor (4), the compression block (5), the telescopic rod (6), and the compression base (7) constitute a longitudinal compression mechanism, the distance sensor (4) is located at the top of the compression block (5), and the telescopic rod (6) It is connected with the compression block (5) and the compression base (7) and is controlled by the servo motor (8) to expand and contract up and down. The compression block (5) is located directly above the center line of the workpiece; the compression base (7) Fixed on the edge of the processing table (1); the lead screw (9), the nut (10), and the clamping plate (11) form a horizontal centering clamping mechanism, and the thread rotation direction of the two ends of the lead screw (9) On the contrary, a nut (10) is fitted at both ends of the lead screw (9), and the clamping plate (11) is fixedly connected with the nut (10), and the rotation of the lead screw (9) is controlled by the servo motor (8) . 2. The horizontal and vertical automatic centering and pressing positioning device for workpieces according to claim 1, characterized in that: the length of the telescopic rod (6) is half of the width of the workpiece conveying guide rail (2).