阅读说明：本技术 一种偏心轴角向定位装置 (Angular positioning device for eccentric shaft ) 是由 刘泽霖 李军峰 史大浩 尹臣林 刘明远 隋安东 冯晓明 任平川 于 2021-07-21 设计创作，主要内容包括：本发明涉及自动化加工装备,具体是一种偏心轴角向定位装置,包括固定底座,所述固定底座的一侧固定电机,所述电机对侧的固定底座上固定顶尖,所述电机的电机轴上固接三爪卡盘,待定位的偏心轴的一端夹持在所述三爪卡盘上、另一端抵在所述顶尖上；待定位的偏心轴的第一外圆和第二外圆分别通过一个气密检测总成进行检测定位。与现有技术相比,本发明花费较低成本,就能实现有角向定位需求的零件的角向定位,可根据工件的不同,设定多个气密总成,一方面增加系统的稳定性可靠性,另一方面可避免铁屑等杂质的影响。(The invention relates to automatic processing equipment, in particular to an eccentric shaft angular positioning device which comprises a fixed base, wherein a motor is fixed on one side of the fixed base, a tip is fixed on the fixed base on the opposite side of the motor, a motor shaft of the motor is fixedly connected with a three-jaw chuck, one end of an eccentric shaft to be positioned is clamped on the three-jaw chuck, and the other end of the eccentric shaft to be positioned is abutted against the tip; and the first outer circle and the second outer circle of the eccentric shaft to be positioned are respectively detected and positioned through an air tightness detection assembly. Compared with the prior art, the invention has lower cost, can realize the angular positioning of the parts with the requirement of angular positioning, and can set a plurality of airtight assemblies according to the difference of workpieces, thereby improving the stability and reliability of the system on one hand and avoiding the influence of impurities such as scrap iron and the like on the other hand.)

1. The eccentric shaft angular positioning device is characterized by comprising a fixed base (1), wherein a motor (2) is fixed on one side of the fixed base (1), a tip (3) is fixed on the fixed base (1) on the opposite side of the motor (2), a three-jaw chuck (4) is fixedly connected to a motor shaft of the motor (2), one end of an eccentric shaft (100) to be positioned is clamped on the three-jaw chuck (4), and the other end of the eccentric shaft (100) to be positioned abuts against the tip (3); a first outer circle (101) and a second outer circle (102) of an eccentric shaft (100) to be positioned are detected and positioned through an airtight detection assembly (5).

2. The eccentric shaft angular positioning device according to claim 1, wherein the air tightness detection assembly (5) comprises a pneumatic sliding table (51) fixed on the fixed base (1), the sliding direction of the pneumatic sliding table (51) is perpendicular to the axial direction of the first outer circle (101) and the second outer circle (102), an L-shaped bracket (52) is fixedly arranged on the pneumatic sliding table (51), an air tightness installation block (53) is fixedly arranged on the flat plate of the L-shaped bracket (52), an air passage (54) is formed in the air tightness installation block (53), an air tightness detection joint (55) is arranged at the outer end of the air passage (54), and an air tightness detector is connected through the air tightness detection joint (55); a vertical plate of the L-shaped support (52) is in sliding fit with a sliding rod (56), the axial direction of the sliding rod (56) is consistent with the sliding direction of the pneumatic sliding table (51), a blocking table (57) is arranged at the outer end of the sliding rod (56), a spring (58) is sleeved on the sliding rod (56) between the blocking table (57) and the vertical plate of the L-shaped support (52), and the inner end of the sliding rod (56) is opposite to the inner end of the air passage (54); the outer end face of the baffle table (57) is abutted against the circumferential face of the first outer circle (101) and/or the second outer circle (102).

Technical Field

The invention relates to automatic processing equipment, in particular to an eccentric shaft angular positioning device.

Background

A workpiece with one outer circle parallel to and misaligned with the axis of the other outer circle is called an eccentric shaft. In the automatic machining process of the eccentric shaft, the eccentric shaft needs to be angularly positioned, a camera is usually adopted for shooting in the prior art, multiple shot images are analyzed to realize angular positioning, and positioning is inaccurate due to the fact that the camera has the influence of the precision and stability and personal subjective factors, or the positioning structure is complex, high in cost and low in efficiency.

Disclosure of Invention

In order to overcome one of the defects or shortcomings in the prior art, the invention provides an eccentric shaft angular positioning device, which adopts the technical scheme that:

an angular positioning device of an eccentric shaft is characterized by comprising a fixed base, wherein a motor is fixed on one side of the fixed base, a tip is fixed on the fixed base on the opposite side of the motor, a motor shaft of the motor is fixedly connected with a three-jaw chuck, one end of the eccentric shaft to be positioned is clamped on the three-jaw chuck, and the other end of the eccentric shaft to be positioned abuts against the tip; and the first outer circle and the second outer circle of the eccentric shaft to be positioned are respectively detected and positioned through an air tightness detection assembly.

Further, the air tightness detection assembly comprises a pneumatic sliding table fixed on the fixed base, the sliding direction of the pneumatic sliding table is perpendicular to the axial direction of the first excircle and the second excircle, an L-shaped support is fixedly arranged on the pneumatic sliding table, an air tightness installation block is fixedly arranged on a flat plate of the L-shaped support, an air passage is formed in the air tightness installation block, an air tightness detection joint is arranged at the outer end of the air passage, and the air tightness detection joint is connected with an air tightness detector; the vertical plate of the L-shaped support is in sliding fit with the sliding rod, the axial direction of the sliding rod is consistent with the sliding direction of the pneumatic sliding table, the outer end of the sliding rod is provided with a blocking table, a spring is sleeved on the sliding rod between the blocking table and the vertical plate of the L-shaped support, and the inner end of the sliding rod is opposite to the inner end of the air passage; the outer end face of the blocking table is abutted against the circumferential face of the first excircle and/or the second excircle.

Compared with the prior art, the invention has lower cost, can realize the angular positioning of the parts with the requirement of angular positioning, and can set a plurality of airtight assemblies according to the difference of workpieces, thereby improving the stability and reliability of the system on one hand and avoiding the influence of impurities such as scrap iron and the like on the other hand.

Drawings

Fig. 1 is a schematic structural view of the present invention.

FIG. 2 is a schematic diagram of the structure of the air-tightness detecting assembly of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

1-2, the angular positioning device for the eccentric shaft comprises a fixed base 1, wherein a motor 2 is fixed on one side of the fixed base 1, a tip 3 is fixed on the fixed base 1 on the opposite side of the motor 2, a three-jaw chuck 4 is fixedly connected to a motor shaft of the motor 2, one end of the eccentric shaft 100 to be positioned is clamped on the three-jaw chuck 4, and the other end of the eccentric shaft abuts against the tip 3; the first outer circle 101 and the second outer circle 102 of the eccentric shaft 100 to be positioned are respectively detected and positioned through an air tightness detecting assembly 5.

The air tightness detection assembly 5 comprises a pneumatic sliding table 51 fixed on the fixed base 1, the sliding direction of the pneumatic sliding table 51 is perpendicular to the axial direction of the first excircle 101 and the second excircle 102, an L-shaped support 52 is fixedly arranged on the pneumatic sliding table 51, an air tightness mounting block 53 is fixedly arranged on the flat plate of the L-shaped support 52, an air passage 54 is formed in the air tightness mounting block 53, an air tightness detection joint 55 is arranged at the outer end of the air passage 54, and the air tightness detection joint 55 is connected with an air tightness detector; a vertical plate of the L-shaped support 52 is in sliding fit with a sliding rod 56, the axial direction of the sliding rod 56 is consistent with the sliding direction of the pneumatic sliding table 51, a blocking table 57 is arranged at the outer end of the sliding rod 56, a spring 58 is sleeved on the sliding rod 56 between the blocking table 57 and the vertical plate of the L-shaped support 52, and the inner end of the sliding rod 56 is opposite to the inner end of the air channel 54; the outer end surface of the block 57 abuts against the circumferential surface of the first outer circle 101 and/or the second outer circle 102.

In actual operation, firstly, the pneumatic sliding table retracts to drive the L-shaped support to move outwards, the eccentric shaft is loaded through a robot or other devices, after the eccentric shaft is clamped and installed by the three-jaw chuck and the tip, the motor drives the eccentric shaft to rotate, the pneumatic sliding table extends to drive the L-shaped support to move inwards, the outer blocking end face of the sliding rod is pressed on the circumferential face of one of the eccentric shafts through the spring, the sliding rod slides relative to the L-shaped support due to different rotation angles in the rotation process of the eccentric shaft, gaps between the sliding rod and the inner end of the air passage dynamically change along with the sliding rod, the air tightness measuring instrument measures the gaps in real time, and when the gaps reach set minimum values, the rotation is stopped, the eccentric shaft is at set fixed angles, and angular positioning is completed.

In actual operation, can set for a plurality of airtight assemblies according to the difference of work piece, increase the stability reliability of system on the one hand, on the other hand can avoid the influence of impurity such as iron fillings.

The foregoing is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way; those skilled in the art can make many possible variations or modifications to the invention using the methods and techniques disclosed above, or to modify equivalent embodiments without departing from the scope of the invention. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention.