CN207263061U - A kind of detection fixture of axial workpiece circle bounce - Google Patents

Abstract

The utility model relates to the field of detection equipment for shaft parts, in particular to a detection fixture for circular runout of shaft parts, which includes a support mechanism, a measurement component, and a transmission component. The support mechanism includes a bottom plate, a base, a left positioning adjustment bracket and a right positioning adjustment Bracket, the measurement assembly includes a measurement bracket and a dial gauge, the transmission assembly includes a motor, bearings, driving gears, driven gears and thimbles, using this design of the detection fixture, the transmission assembly can drive the support mechanism to rotate, allowing the The part rotates, the dial indicator can be positioned once and the outer circumferential surface of the entire shaft part can be measured at the same time, and the sliding guide rail of the measurement component can make the fixed dial indicator move along the fixed axial direction of the shaft part. For the ladder Shaft parts can measure the circular runout data of different parts, making the measurement data more accurate, reducing manufacturing and processing errors, improving the assembly accuracy of parts, ensuring the service life of assembly equipment, and improving the safety performance of equipment.

Description

A testing fixture for circular runout of shaft parts

technical field

The utility model relates to the field of detection equipment for shaft parts, in particular to a detection fixture for circular runout of shaft parts.

Background technique

At present, in the field of mechanical manufacturing, the manufacturing and processing of cylindrical shaft parts is often involved, and a very important indicator of cylindrical workpieces is the circular runout of the circumferential surface. If the circular runout of the circumferential surface exceeds the design requirements Within the specified range, there will be assembly difficulties during the assembly process, which will increase wear and noise during use, reduce the service life of the parts, affect the overall function of the equipment, reduce the working accuracy, and even directly lead to the scrapping of the equipment and safety accidents, so The runout of the part surface is very important. At present, when the general detection device detects the circular runout, the measuring head cannot be moved during the measurement, so that some parts to be measured will be missed, or the position needs to be manually adjusted for multiple measurements, resulting in inaccurate measurement data.

Contents of the invention

To solve the problems existing in the prior art, the utility model provides a detection fixture for circular runout of shaft parts with simple structure, convenient operation, high measurement accuracy and movable measuring head, which can detect all the circumferential surfaces of shaft parts at any time Advantages of circular beating of parts.

The technical scheme that the utility model solves its technical problem adopts is:

A detection fixture for the circular runout of shaft parts, including a support mechanism and a measuring assembly, the support mechanism includes a base plate, a base fixedly installed on the upper surface of the base plate, and a left positioning adjustment bracket and a right positioning adjustment bracket at both ends of the fixed part, The left positioning adjustment bracket and the right positioning adjustment bracket are placed on the base, and the measurement assembly includes a measurement bracket and a dial gauge fixed on the measurement bracket for measuring the circular runout, and also includes a transmission assembly for realizing the rotation of the parts. The transmission assembly includes a motor, a bearing, a driving gear, a driven gear and a thimble, and the thimble is respectively fixed on the left positioning adjustment bracket and the right positioning adjustment bracket through the bearing, and the thimble on the left positioning adjustment bracket and the right positioning adjustment bracket Relatively and with coaxiality, the left side of the thimble on the left positioning adjustment bracket is covered with a driven gear, and the driven gear meshes with the driving gear fixed on the motor; the measuring bracket includes 1. The vertical frame on the outside of the right positioning adjustment bracket, a sliding guide rail is fixed between the two vertical frames, a slider is set on the sliding rail, the dial gauge is fixed on the slider by a clamping frame, and the bottom of the vertical frame There is a moving guide rail placed on the bottom plate, and the moving guide rail is perpendicular to the base.

With this design of the test fixture for the circular runout of shaft parts, the transmission assembly can drive the support mechanism to rotate, so that the parts to be measured can be rotated, and the dial gauge can be positioned once to measure the outer circumferential surface of the entire shaft part at the same time, and the component's The sliding guide rail allows the fixed dial indicator to slide left and right, and move along the fixed axial direction of the shaft parts, so that the dial indicator can be easily moved at any time to measure the entire part. For stepped shaft parts, the circle of different parts can be measured. Runout data makes the measurement data more accurate, reduces manufacturing and processing errors, improves the assembly accuracy of parts, and also ensures the service life of assembly equipment and improves the safety performance of equipment.

It is further defined that the left positioning adjustment bracket is fixedly connected to the base, the right positioning adjustment bracket is provided with a locking briquetting block, and the locking briquetting block is provided with an elastic knob; the elastic knob directly presses the elastic briquetting block against Press it on the bottom plate, so that the right positioning adjustment bracket is firmly fixed on the dovetail guide rail, so that when the transmission assembly drives the thimble and the parts fixed in it to rotate, the positioning adjustment will not be shifted and eccentric directly, and the coaxiality can be maintained more effectively Detect circular runout.

It is further defined that the base is a dovetail guide rail, and the bottoms of the left positioning adjustment bracket and the right positioning adjustment bracket are provided with dovetail grooves matching with the dovetail guide rail; in this way, the right positioning adjustment bracket is more firm when sliding, and also It can better ensure the coaxiality of the two thimbles, thereby ensuring the accuracy of fixing the shaft parts.

It is further defined that the sliding guide rail is parallel to the two coaxial thimbles. The two thimbles are coaxial to locate the shaft parts without eccentricity. After the sliding guide rail is parallel to the thimble, it ensures that the sliding guide rail is parallel to the shaft parts to be tested, so that the dial gauge fixed on the sliding guide rail can measure more accurately. Circular runout of shaft parts.

It is further defined that the side of the slider is provided with an elastic opening groove, and an elastic bolt is arranged on the elastic opening groove. In order to move and adjust the dial indicator on the sliding guide rail, it is convenient for the dial indicator to measure shaft parts. Loosen the elastic bolt when the position is fixed, tighten the elastic bolt after the position is fixed, reduce the size of the elastic opening slot, and ensure that the slider is locked and fixed on the sliding guide rail, so that the dial indicator can better measure the circular runout of the part and reduce the error .

Description of drawings

Fig. 1 is a front view structural schematic diagram of a detection fixture for circular runout of shaft parts.

Detailed ways

In order to make those skilled in the art understand better, the technical solution of the utility model is further described below in conjunction with the accompanying drawings and embodiments.

As shown in Figure 1, a test fixture for circular runout of shaft parts includes a support mechanism 1 and a measuring assembly 2. The support mechanism includes a bottom plate 11, and a base 12 and a fixed part 3 are fixedly installed on the upper end of the bottom plate 11. The left positioning adjustment bracket 13 and the right positioning adjustment bracket 14 at both ends, the left positioning adjustment bracket 13 and the right positioning adjustment bracket 14 are placed on the base 12, and the measurement assembly 2 includes a measurement bracket 4 and is fixed on the measurement bracket 4 for The dial indicator 21 for measuring the circular runout also includes a transmission assembly 5 for realizing the rotation of the parts. The transmission assembly 5 includes a motor 51, a bearing 52, a driving gear 53, a driven gear 54 and two thimbles 55, and the thimble 55 passes through Bearing 52 is respectively fixed on the left positioning adjustment support 14, the right positioning adjustment support 14, the thimble 55 on the left positioning adjustment support 13, the right positioning adjustment support 14 is opposite and has coaxiality, on the left positioning adjustment support 13 The left side of the thimble 55 is covered with a driven gear 54, the driven gear 54 meshes with the driving gear 53 fixed on the motor 51, and the motor 51 drives the driving gear 53 to run to drive the gear 54 to run, and the left positioning adjustment bracket 13 The thimble 55 just rotates continuously with the thimble 55 on the parts 3 and the right positioning adjustment bracket 14, so that the dial indicator 21 can measure the circle runout data of a circle on the outer peripheral surface of the parts 3; The stand 41 on the outside of the positioning adjustment support 13 and the right positioning adjustment support 14 is fixed with a slide guide rail 42 between the two stand supports 41, and the slide guide rail 42 is covered with a slide block 43, and the dial indicator 21 passes through the clamping frame 44 Fixed on the slider 43 , the bottom of the stand 41 is provided with a moving guide rail 45 placed on the bottom plate 11 , and the moving guide rail 45 is perpendicular to the base 12 .

The left positioning adjustment bracket 13 is fixedly connected on the base 12, the right positioning adjustment bracket 14 is provided with a locking briquetting block 141, and the locking briquetting block 141 is provided with an elastic knob 142. The right side of 14 is also provided with handrail 143, drives right positioning adjustment support 14 to move on base 12.

The base 12 is a dovetail guide rail, and the bottoms of the left positioning adjustment bracket 13 and the right positioning adjustment bracket 14 are provided with dovetail grooves matched with the dovetail guide rail.

The sliding guide rail 42 is parallel to the two coaxial ejector pins 55 .

The side of the slider 43 is provided with an elastic opening groove 431 , and an elastic bolt 432 is arranged on the elastic opening groove 431 .

When in use, first fix the shaft part 3 between the left positioning adjustment bracket 13 and the right positioning adjustment bracket 14 with two thimbles 55, and slide the right positioning adjustment bracket 14 to fasten the part 3 when fixing, so as to avoid the rotation of the part 3 When it is loosened, tighten the elastic knob 142 after fixing it to prevent the right positioning adjustment bracket 14 from moving, then adjust the measuring assembly 2, fix the dial indicator 21 on the clamping frame 44, and adjust the position of the slider 43 on the sliding guide rail 42 , until the dial indicator 21 is aligned with the position on the peripheral surface of the part 3 to measure the circular runout data.

The fixture for detecting the circular runout of shaft parts provided by the utility model has been introduced in detail above. The description of the specific embodiment is only used to help understand the method of the present utility model and its core idea. Several improvements and modifications are made, and these improvements and modifications also fall within the protection scope of the claims of the utility model.

Claims (5)

1. a kind of detection fixture of axial workpiece circle bounce, including supporting mechanism, measurement assembly, the supporting mechanism include bottom Plate, the bottom plate upper surface are installed with the left positioning adjusting bracket of pedestal and retaining element both ends, right positioning adjusting bracket, Left positioning adjusting bracket and right positioning adjusting bracket are placed on pedestal, and the measurement assembly includes measurement stent and is fixed on measurement It is used for the dial gauge for measuring circle bounce on stent, it is characterised in that：Further include and be used for realization the rotating transmission component of part, it is described Transmission component includes motor, bearing, driving gear, driven gear and thimble, and it is left fixed that the thimble is separately fixed at by bearing In position adjusting bracket, right positioning adjusting bracket, the thimble in the left positioning adjusting bracket, right positioning adjusting bracket is opposite and has There is concentricity, be cased with driven gear on the left of the left thimble positioned in adjusting bracket, driven gear is with being fixed on motor Driving gear is meshed；

The measurement stent includes being separately fixed at left positioning adjusting bracket, the right stand positioned on the outside of adjusting bracket, and two vertical Rail plate is fixed between frame, sliding block is cased with rail plate, the dial gauge is fixed on sliding block by holding frame, described Stand bottom is equipped with and is placed in moving guide rail on bottom plate, and the moving guide rail and pedestal are perpendicular.

A kind of 2. detection fixture of axial workpiece circle bounce according to claim 1, it is characterised in that：The left positioning is adjusted Section stent is fixedly connected on pedestal, and the right positioning adjusting bracket is equipped with locking clamping block, and the locking clamping block is equipped with pine Tight knob.

A kind of 3. detection fixture of axial workpiece circle bounce according to claim 2, it is characterised in that：The pedestal is swallow Tail type guide rail, the left positioning adjusting bracket, the bottom of right positioning adjusting bracket are equipped with and the matched dovetail of dove-tail form guide rail Groove.

A kind of 4. detection fixture of axial workpiece circle bounce according to claim 1, it is characterised in that：The rail plate It is parallel to each other with two coaxial thimbles.

A kind of 5. detection fixture of axial workpiece circle bounce according to claim 1, it is characterised in that：The side of the sliding block Side is equipped with elastic open slot, and elasticity bolt is equipped with elastic open slot.