CN208099952U - Indexing positioning mechanism - Google Patents

Abstract

The utility model discloses an indexing and positioning mechanism, which belongs to the technical field of mechanical processing equipment. An indexing and positioning mechanism of the utility model includes an indexing plate, a swing rod, a rocker, a sliding pin and an eccentric wheel, and the linkage between the indexing and positioning is realized by using the eccentric wheel and the rocking rod mechanism to solve the problem of rotating at a relatively high speed. In motion, a synthetic action of positioning and indexing is completed. The mechanical structure of the utility model is simple, with the cooperation of the eccentric wheel and the rocker mechanism, the linkage of indexing and positioning is realized; due to the drive of the eccentric wheel, the sliding pin enters or exits the groove on the indexing plate at a gradually changing speed, Make the indexing and positioning process of the indexing plate work smoothly, and can be used in occasions with high indexing speed.

Description

An indexing positioning mechanism

technical field

The utility model relates to an indexing and positioning mechanism, which belongs to the technical field of mechanical processing equipment.

Background technique

In mechanical processing equipment, it is necessary to divide the parts into equal parts and complete them through the indexing plate. However, the indexing plate currently used has defects such as the need to stop the indexing and the slow speed of equalizing, which makes the operator feel uncomfortable when using such a structure. It is very inconvenient and increases the working time a lot, so that the whole processing schedule often lags behind the potential problem. At the same time, the traditional indexing plate has disadvantages such as low positioning accuracy, large impact, and low working life.

Utility model content

The purpose of this utility model is to propose an indexing and positioning mechanism, which uses an eccentric wheel and a rocker mechanism to realize the linkage of indexing and positioning, so as to solve a synthetic action of positioning and indexing in relatively high-speed rotary motion.

The purpose of this utility model is to provide an indexing and positioning mechanism, including an indexing plate, a swing rod, a rocker, a sliding pin and an eccentric wheel; the eccentric wheel is fixedly connected to the shaft and rotates with the shaft; the indexing plate is empty On the shaft; one end of the pendulum rod is vacantly sleeved on the shaft, and a guide groove is set at the other end, and the sliding pin can move radially along the indexing disc in the guide groove; the rocker is sleeved on the outer circle of the eccentric wheel , one end of the rocker is connected with the sliding pin arranged in the guide groove of the swing rod, and the other end is connected with the sliding pin arranged in the fixed guide seat.

In one embodiment of the present invention, the shaft is driven to rotate by a transmission device.

In one embodiment of the present utility model, the driving includes being directly connected to the motor and being driven by the motor.

In one embodiment of the present utility model, the driving includes transmission by a motor through a transmission device.

In one embodiment of the present utility model, the transmission device includes but not limited to pulleys and gears.

In one embodiment of the present utility model, the outer periphery of the indexing plate is provided with several center-symmetric grooves, and the diameter of the grooves can allow the sliding pin to enter or exit.

In one embodiment of the present utility model, the fixed guide seat is provided with a guide groove for the sliding pin to move.

In one embodiment of the present invention, the indexing and positioning mechanism includes two sliding pins, the first sliding pin is arranged in the guide groove of the swing rod, and the second sliding pin is arranged in the guide groove of the fixed guide seat.

Beneficial effects: the utility model has a simple mechanical structure, and realizes the linkage of indexing and positioning with the cooperation of the eccentric wheel and the rocker mechanism; due to the drive of the eccentric wheel, the sliding pin enters or exits the indexing plate at a gradually changing speed The grooves make the indexing and positioning process of the indexing plate work smoothly, and can be used in occasions with high indexing speed.

Description of drawings

Fig. 1 is the structure schematic diagram of a kind of index positioning mechanism of the present utility model; Among them, 1, index plate; 2, pendulum; 3, the first slide pin; 4, rocker; Slide pin; 7, fixed guide seat; 8, slot; 9, shaft.

Detailed ways

In order to make the utility model realize the above objects, features and advantages and make it more obvious and easy to understand, the utility model will be further described in detail below in conjunction with specific embodiments.

As shown in Figure 1, a kind of index positioning mechanism of the present utility model comprises index plate 1, pendulum bar 2, rocker 4, sliding pin, eccentric wheel 5 and fixed guide seat 7; 9; the circumferential direction of the indexing plate 1 is provided with a number of grooves 8 that are symmetrical to the center, and the diameter of the groove 8 can be used for sliding pins to enter or exit; one end of the swing rod 2 is sleeved on the shaft 9, and the other end is set guide groove, the first sliding pin 3 can move along the guide groove; the rocking rod 4 is sleeved on the outer circle of the eccentric wheel 5, and one end of the rocking rod 4 is hinged with the first sliding pin 3 in the swing rod 2 guide groove; One end is hinged with the second sliding pin 6 in the guide groove of the fixed guide seat 7, so that the rocking rod 4 swings under the drive of the eccentric wheel and moves with the first sliding pin 3 on the indexing plate under the follow-up cooperation of the swing rod 2. 1, and the second sliding pin 6 connected to the other end exits or enters in the groove of the indexing plate; Rotate to drive the rocking bar 4 to move.

The working principle of the utility model is: the eccentric wheel 5 is driven to rotate by the shaft 9, and the shaft 9 is driven by a motor or driven by transmission devices such as belt pulleys and gears to rotate, and then drives the rocking bar 4 to move. Driven by the rocker 4 , the first slide pin 3 hinged on the rocker 4 moves along the chute on the follower rocker 2 . When the eccentric wheel 5 rotates to a certain angle, the first slide pin 3 withdraws from a groove 8 of the index plate 1, and in the process, the second slide pin 6 at the other end hinged with the rocker 4 is inserted into the index plate 1 Position it in another slot of 8. When the eccentric wheel 5 continues to rotate, the rocking bar 4 makes the first sliding pin 3 enter the adjacent next groove 8, and at the same time, the second sliding pin 6 at the other end of the rocking bar 4 is withdrawn from the groove 8. Repeat the work alternately according to the above steps to complete the whole process of indexing and positioning.

The scope of protection of the present utility model is not limited to the above-mentioned embodiments, and within the spirit and principles of the present utility model, any modifications, equivalent replacements and improvements that professionals in the field can make should be included in this utility model. within the scope of the new protection.

Claims (8)

1. An indexing and positioning mechanism is characterized in that it comprises an indexing plate, a fork, a rocking bar, a sliding pin and an eccentric wheel; the eccentric wheel is fixedly connected to the shaft and rotates with the shaft; the indexing plate is empty on the shaft; one end of the pendulum rod is vacantly sleeved on the shaft, and a guide groove is provided at the other end, and the sliding pin can move radially along the indexing disc in the guide groove; the rocker is sleeved on the outer circle of the eccentric wheel, One end of the rocking rod is connected with the slide pin arranged in the swing bar guide groove, and the other end is connected with the slide pin arranged in the fixed guide seat. 2. An indexing and positioning mechanism according to claim 1, wherein the shaft is driven to rotate by a transmission device. 3. An indexing and positioning mechanism according to claim 2, wherein the driving includes direct connection with a motor, or indirect driving by a motor. 4 . The indexing and positioning mechanism according to claim 2 , wherein the driving includes driving by a motor through a transmission. 5. An indexing and positioning mechanism according to claim 4, wherein the transmission device comprises a pulley or a gear. 6 . The indexing and positioning mechanism according to claim 1 , wherein the outer periphery of the indexing plate is provided with a plurality of grooves symmetrical to the center, and the diameter of the grooves can allow sliding pins to enter or exit. 7 . 7. The indexing and positioning mechanism according to claim 1, wherein the fixed guide seat is provided with a guide groove for the sliding pin to move. 8. An indexing and positioning mechanism according to any one of claims 1 to 7, characterized in that the indexing and positioning mechanism comprises two sliding pins, the first sliding pin is arranged in the guide groove of the swing rod, the second The two slide pins are arranged in the guide grooves of the fixed guide seat.