CN201974161U - Excircle radical runout detection device for pipe fitting - Google Patents

Abstract

The utility model relates to an excircle diameter runout detection device for a pipe fitting, which comprises a lathe body, an adjusting mechanism, a clamping mechanism, a driving mechanism and a detection mechanism, wherein the adjusting mechanism is fixed on the lathe body and is used for adjusting the position of a pipe fitting or a pipe fitting support; the clamping mechanism is fixed on the lathe body and clamps the pipe fitting in the horizontal direction; the driving mechanism is arranged on the clamping mechanism and drives the pipe fitting to rotate; and the detection mechanism is arranged on the clamping mechanism and collects radial runout values of all excircle points of the pipe fitting. The excircle radial runout detection device for a pipe fitting has no artificial deviation, is suitable for one-by-one detection of the pipe fitting and has high efficiency; the whole detection process can be controlled within 10 seconds; and the rapid and reliable detection is truly realized.

Description

A device for detecting jumping of the outer diameter of pipe fittings

technical field

The utility model relates to an outer circle runout detection device, in particular to a pipe fitting outer circle runout detection device.

Background technique

Various pipe fittings and their processed parts occupy a considerable proportion in industrial production, and the outer diameter runout of pipe fittings is an important indicator for testing the quality of pipe fittings. At present, most of the detection of outer circle runout in the industrial field adopts the traditional contact detection method, which uses a dial indicator or a radial runout detector to detect the outer circle runout. The main disadvantages of this detection method are: 1. Each detection piece needs to take multiple points on the circumference, and the value of each point needs to be read by the operator from the indicated position of the watch needle. The process of reading the value varies from person to person. There are man-made deviations; 2. Every time a workpiece is detected, the detection instrument needs to be adjusted, which takes a long time and is inefficient, so it can only be a batch sampling inspection, not suitable for one-by-one inspection; 3. Since each sampling point is a static inspection, Therefore, the detected radial runout value does not reflect the radial runout of the pipe fittings during actual operation.

Under the general trend of industrial automation production and assembly, on-line testing is required for finished products, so traditional testing methods are no longer suitable for the requirements of automated production.

Utility model content

Aiming at the deficiencies in the prior art, such as long time-consuming and low efficiency, for the detection of outer diameter jump of pipe fittings, the technical problem to be solved by the utility model is to provide a fast and reliable detection device for outer diameter jump of pipe fittings.

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:

The utility model is a detection device for outer diameter jump of pipe fittings, which includes a bed body, an adjustment mechanism, a clamping mechanism, a driving mechanism and a detection mechanism, wherein:

Adjustment mechanism, fixed on the bed body, used to adjust the position of pipe fittings or pipe fitting brackets;

The clamping mechanism is fixed on the bed body and clamps the pipe fittings in the horizontal direction;

The driving mechanism, installed on the clamping mechanism, drives the pipe to rotate;

The detection mechanism is installed on the clamping mechanism, and collects the radial jump value of each point on the outer circle of the pipe fitting.

The clamping mechanism includes a hydraulic cylinder, a sliding saddle and a top, wherein the cylinder body of the hydraulic cylinder is fixed on the bed body, and its piston rod is fixedly connected with the sliding saddle; the bottom of the sliding saddle is flexibly connected with the guide rail of the bed body; the sliding saddle faces the pipe There is a top on the side.

The driving mechanism includes a driving motor, a cylinder, a connecting piece and a friction wheel, wherein the cylinder is fixed on the top of the saddle; the connecting piece is installed on the piston rod of the cylinder, and the driving motor is fixedly connected with the connecting piece; the shaft of the friction wheel and the driving motor connected.

The adjustment mechanism includes: a pipe material support and a servo motor, wherein the servo motor is fixed on a fixed platform inside the bed body, the pipe material support cooperates with a lead screw through a screw nut, and the lead screw is connected with the shaft of the servo motor.

A platform for fixing the clamping mechanism and an adjusting mechanism is respectively arranged on the upper part and the inside of the bed body, and two parallel guide rails for fixing the saddle in the vertical direction are arranged on the upper platform.

The detection mechanism has a displacement sensor, which is fixed on the saddle through a sensor bracket.

The utility model has the following beneficial effects and advantages:

1. The utility model has a reasonable structure, uniformly fixes the adjustment mechanism, the clamping mechanism, the driving mechanism and the detection mechanism on the bed body, realizes the steps of adjusting and fixing the position of the workpiece, driving the rotation, and detecting the radial jump. The process is simple, the connection is reliable, and the There is human bias, it is suitable for the detection of pipe fittings one by one, and the efficiency is high.

2. Due to the use of fast and reliable displacement sensors, the entire detection process can be controlled within 10 seconds, truly realizing fast and reliable detection.

Description of drawings

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

Fig. 2 is the flow chart of the method control program that the utility model adopts.

Detailed ways

As shown in Figure 1, the utility model pipe fitting outer diameter jump detection device includes a bed body 1, an adjustment mechanism, a clamping mechanism, a driving mechanism and a detection mechanism, wherein: the adjustment mechanism is fixed on the bed body for adjusting the pipe fitting or The position of the pipe bracket; the clamping mechanism, which is fixed on the bed body, clamps the pipe in the horizontal direction; the driving mechanism, which is installed on the clamping mechanism, drives the rotation of the pipe; the detection mechanism, which is installed on the clamping mechanism, collects the outer circle of the pipe The radial jump value of each point.

The adjustment mechanism is used to adjust the vertical position of the pipe fitting 10, and includes a pipe material support 12 and a servo motor 13, wherein the servo motor 13 is fixed on the fixed platform inside the bed body 1, the pipe material support 12 cooperates with the lead screw through a screw nut, and the lead screw and the lead screw The shaft of the servo motor is connected. Pipe material support 12 adopts V shape, is fixed on the screw nut that is enclosed within on the servomotor 13 axles, can move up and down along with servomotor rotation.

The clamping mechanism includes a hydraulic cylinder 2, a sliding saddle 3 and a top 11, wherein the cylinder body of the hydraulic cylinder 2 is fixed on the bed body 1, and its piston rod is fixedly connected with the sliding saddle 3; the bottom of the sliding saddle 3 is movable with the guide rail of the bed body 1. Connection; the side of the saddle 3 facing the pipe 10 is provided with a top 11 .

The driving mechanism includes a driving motor 4, a cylinder 5, a connecting piece 6 and a friction wheel 7, wherein the cylinder 5 is fixed on the top of the saddle 3; the connecting piece 6 is installed on the piston rod of the cylinder 5, and the driving motor is fixedly connected with the connecting piece 6; The friction wheel 7 is connected to the shaft of the drive motor 4 . The connecting piece 6 adopts a right-angle form, the piston rod of the cylinder 5 is fixed on the top surface of the connecting piece 6, and the driving motor 4 is fixed on the vertical surface of the connecting piece 6;

The detection mechanism includes a sensor bracket 8 and a displacement sensor 9, wherein the sensor bracket 8 is fixed on the upper plane of the saddle 3, and the displacement sensor 9 is fixed on the sensor bracket 8. The fixed position of the displacement sensor 9 ensures that the laser point emitted by it is consistent with the tip 11. The horizontal centerlines intersect.

The utility model realizes automatic control by following method.

In order to realize automatic control, it is also necessary to install position detection switches at the following positions:

Install the saddle positive in-position switch and the saddle negative in-position switch on the clamping mechanism; install the cylinder positive in-position switch and cylinder negative in-position switch on the driving mechanism, and install the detection switch for the pipe fittings in the adjustment mechanism; among them, the saddle positive in-position switch and The negative position switch of the saddle is used to detect the relative position of the saddle 3; the positive position switch of the cylinder and the negative position switch of the cylinder are used to detect the relative position of the cylinder 5;

In this embodiment, the Siemens PLC-300 controller is used as the main control component. The positive position switch of the sliding saddle, the negative position switch of the sliding saddle, the positive position switch of the cylinder, and the negative position switch of the cylinder adopt the proximity switch of Turck, and the detection switch of the pipe fittings adopts Yamatake. photoelectric switch.

In this embodiment, a pipe fitting with an outer diameter of 178 mm is taken as an example.

The control method of the pipe fitting outer circle jump detection device of the utility model comprises the following steps:

Start, start the self-test program, mechanism and parameter initialization;

After receiving the start detection signal, the adjustment mechanism moves the pipe support to the working position;

The clamping mechanism clamps the pipe, and the driving mechanism goes down until the friction wheel contacts the pipe;

The adjustment mechanism moves the pipe support away;

Start the driving motor of the driving mechanism, and the friction wheel works to make the pipe material rotate;

The detection mechanism starts to collect the data of the outer diameter jump of the pipe material;

After reaching the set collection quantity, end the detection;

The driving mechanism stops and moves upward;

The adjustment mechanism moves the pipe support to the working position;

The clamping mechanism releases the fitting;

The tube material is taken away, and a detection process ends.

Start the driving motor of the driving mechanism to rotate the pipe material, and after a time delay, the detection mechanism starts to collect data.

Parameters and parameters in the mechanism initialization include: adjust the working position of the pipe material support 12 of the mechanism: 100mm, the avoidance position of the pipe material support 12 is 80mm, the above position parameters are all for the zero position of the servo motor; the start-stop delay of the drive motor is 1s; Number of points: 200 points.

As shown in Figure 2, the concrete implementation process of the method that the utility model adopts is as follows:

Judging whether to start the detection by the external signal, the external signal is the enable signal provided by the host computer; if allowed, the servo motor 3 of the adjustment mechanism drives the V-shaped pipe material support 12 to move to the working position 100mm;

After the pipe material support 12 is moved to the working position, the pipe fitting 10 is placed on the pipe material support 12 by the external mechanical arm, and whether the pipe material 10 is in place is detected by the pipe fitting detection switch;

When the pipe fitting 10 is in place, the hydraulic cylinder 2 drives the saddle 3 to move in the direction of the pipe fitting 10, and the tip 11 on the saddle 3 fixes the shaft of the pipe fitting 10, and the saddle is in place and the switch detects a signal;

When the saddle is in place switch detects the signal, the cylinder 5 drives the driving mechanism to move down, so that the friction wheel 7 contacts the pipe fitting 10, and the cylinder is in place switch has a signal at this time;

The pipe support 12 is driven down by the servo motor 13 to the avoidance position of 80mm;

The drive motor 4 starts to rotate, and waits for the start-stop delay time of the drive motor to be 1s;

After the start-stop delay time of the driving motor reaches 1s, the value of the displacement sensor is periodically read by the controller (Siemens PLC-300). When the number of sampling points reaches 200, the sampling process is completed.

Then it is necessary to adjust each mechanism to the original position, that is, the driving motor stops, and wait for the delay time of the driving motor to start and stop for 1s;

After the start-stop delay time of the driving motor reaches 1s, the pipe support 12 is driven by the servo motor 3 to move to the working position of 100mm;

When the pipe support 12 reaches the working position, the cylinder drives the driving device to move up, and waits for the negative position switch signal of the cylinder;

After getting the negative in-position switch signal of the cylinder, the hydraulic cylinder drives the clamping mechanism to move backward, waiting for the negative in-position switch signal of the saddle;

After getting the negative in-position switch signal of the saddle, the controller sends a detection completion signal to the host computer, waiting for the detection of the next pipe.

The controller performs subsequent processing on the sampled data, that is, performs maximum and minimum value filtering, and finally obtains the jump value of the outer diameter of the pipe fitting.

Claims (6)

1. a pipe fitting outer circle diameter is jumped pick-up unit, it is characterized in that: comprise a body (1), adjusting mechanism, clamp system, driving mechanism and testing agency, wherein:

Adjusting mechanism is fixed on the body, is used to adjust the position of pipe fitting or pipe fitting support;

Clamp system is fixed on the body, clamps pipe fitting in the horizontal direction;

Driving mechanism is installed on the clamp system, drives the pipe fitting rotation;

Testing agency is installed on the clamp system, gathers the footpath jumping value of pipe fitting cylindrical each point.

2. jump pick-up unit by the described pipe fitting outer circle diameter of claim 1, it is characterized in that: described clamp system comprises hydraulic cylinder (2), saddle (3) and top (11), wherein the cylinder body of hydraulic cylinder (2) is fixed on the body (1), and its piston rod and saddle (3) are connected; Saddle (3) bottom flexibly connects with the guide rail of bed body (1); Saddle (3) is provided with top (11) towards the side of pipe fitting (10).

3. jump pick-up unit by the described pipe fitting outer circle diameter of claim 1, it is characterized in that: described driving mechanism comprises drive motor (4), cylinder (5), web member (6) and friction pulley (7), and wherein cylinder (5) is fixed in the top of saddle (3); Web member (6) is installed on the piston rod of cylinder (5), and drive motor and web member (6) are connected; Friction pulley (7) links to each other with the axle of drive motor (4).

4. jump pick-up unit by the described pipe fitting outer circle diameter of claim 1, it is characterized in that: described adjusting mechanism comprises: pipe material support (12) and servomotor (13), wherein servomotor (13) is fixed on the inner stationary platform of a body (1), pipe material support (12) cooperates with leading screw by screw, and leading screw links to each other with the axle of servomotor.

5. jump pick-up unit by the described pipe fitting outer circle diameter of claim 1, it is characterized in that: described bed body (1) top and inside are respectively equipped with the platform that fixes to clamp mechanism and adjusting mechanism, be provided with two and be used in vertical direction the fixedly closed slide of saddle (3) on upper brace.

6. jump pick-up unit by the described pipe fitting outer circle diameter of claim 1, it is characterized in that: described testing agency has displacement transducer (9), is fixed on the saddle (3) by sensor stand (8).

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