CN217132162U

CN217132162U - Large-scale die forging warpage of stock class detects instrument

Info

Publication number: CN217132162U
Application number: CN202123159307.0U
Authority: CN
Inventors: 肖挺; 王荣; 张静; 郭敏鸽
Original assignee: Shaanxi Hongyuan Aviation Forging Co Ltd
Current assignee: Shaanxi Hongyuan Aviation Forging Co Ltd
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2022-08-05
Anticipated expiration: 2031-12-15

Abstract

The utility model relates to a measurement field especially relates to a large-scale forging warpage of stock class detects instrument. The tool comprises a connecting rod and 3 measuring devices; the 3 measuring devices are respectively arranged at the front, middle and rear ends of the connecting rod; the measuring device comprises a processor, a display, calipers of a pair of digital display vernier calipers, a pair of displacement sensors and a shell; a processor is arranged in the shell, a display is arranged at an opening of the shell, a pair of calipers respectively extend out from the upper part and the lower part of the shell and are used for clamping a long-rod forge piece to be tested, and displacement sensors used for sensing the displacement of the calipers are arranged at the tops of the calipers; the pair of sensors are in communication connection with the processor, and the processor is in communication connection with the display; the processor is used for receiving the displacement measured by the pair of sensors, determining the difference value between the center of the forge piece at the end point position and the center of the measuring device through the displacement measured by the pair of sensors, and sending the difference value to the display so that the display displays the difference value.

Description

Large-scale die forging warpage of stock class detects instrument

Technical Field

The utility model relates to a measurement field especially relates to a large-scale forging warpage of stock class detects instrument.

Background

When the mould on the counterblow hammer is installed, the counterblow hammer striking center coincides with the mould striking center, the mould striking center is the gravity center of the projection area of the mould forging on the parting surface, for the gravity center of the long-rod type forging, the gravity center is basically coincident with the width center line of the forging, and the distance between the gravity center and the length center line is close to one side of the large section along with the change of the cross section of the forging. Based on the characteristics of the distribution of the striking force of the counter-blow hammer, the striking force is maximum at the striking center of the die, and the striking force is weaker along with the farther distance from the striking center, so that in the production process of long-rod die forgings, because the length of the forgings is larger, the striking force applied to blanks by the counter-blow hammer is uneven, the stress at the length center (the striking center of the die) of the long-rod forgings is larger, the stress at two ends farther away from the striking center is smaller, and the uneven stress causes the large-rod forgings to deform along the height direction.

This deformation is commonly referred to as the buckling deformation of the forging, which refers to the maximum allowable amount of deviation of the forging's actual centerline from its specified centerline. When the warpage value is measured by the traditional method, a forklift is needed to be used for transferring a large forging to a workshop where a marking platform is located, then the forging is needed to be transferred to the marking platform piece by using a crane, then the forging is aligned by the aid of the crane, the center line of the forging is found by using the marking platform, the distance between the middle part of the forging and the center line of the forging is measured, the accurate warpage value of the forging is obtained, and if the forging is too large and too long, the single piece measuring time is long, so that the batch production detection efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the detection mode that adopts can effectively avoid above problem, finds out the center at forging both ends respectively through the measuring module at both ends to on automatic adjustment connecting rod to forging central line, finding out the center at forging middle part through the measuring module in the middle of, the perpendicular distance of forging middle part center distance connecting rod is forging warpage value.

The technical scheme is as follows:

a warp measuring tool for long-rod forgings comprises a connecting rod and 3 measuring devices; the 3 measuring devices are respectively arranged at the front, middle and rear ends of the connecting rod;

the measuring device comprises a processor, a display, calipers of a pair of digital display vernier calipers, a pair of displacement sensors and a shell; a processor is arranged in the shell, a display is arranged at an opening of the shell, a pair of calipers respectively extend out from the upper part and the lower part of the shell and are used for clamping a long-rod forge piece to be tested, and displacement sensors used for sensing the displacement of the calipers are arranged at the tops of the calipers; the pair of sensors are in communication connection with the processor, and the processor is in communication connection with the display;

the processor is used for receiving the displacement measured by the pair of sensors, determining the difference value between the center of the forge piece at the end point position and the center of the measuring device through the displacement measured by the pair of sensors, and sending the difference value to the display so that the display displays the difference value.

The 3 measuring devices are respectively sleeved on the connecting rod and can slide along the connecting rod;

when the measuring device slides to a measuring point of the forge piece, the measuring device is locked on the connecting rod through the locking piece.

The zero positions of the 3 measuring devices are all positioned on the central line of the connecting rod.

The displacement sensor is used to measure the amount of displacement from the zero position of the measuring device to the top of the caliper.

The calculation formula of the difference value delta between the center of the forge piece and the center of the measuring device is as follows:

δ＝L _{on the upper part} ―L _{Lower part} ；

L _{Upper part of} For measuring the displacement of the displacement sensor which extends upwards out of the caliper; l is _{Lower part} For measuring the amount of displacement of a displacement sensor extending down the caliper.

The straightness of the connecting rod is less than or equal to 0.3 mm; the surface finish is less than or equal to 1.6 μm.

The utility model has the advantages that: the warpage value of stock class forging is measured to the accuracy fast, solves the problem that traditional measuring method detection efficiency is low, and this scheme can effectively reduce the hard condition (place, equipment etc.) that detects for portable equipment.

Drawings

Fig. 1 is a schematic view of a measurement tool.

Fig. 2 is a side view of a measuring tool.

FIG. 3 is a schematic view of a long bar forging.

Detailed Description

The present invention will be described in further detail with reference to the following examples.

The utility model discloses stock class forging that will measure indicates transversal certain shape of personally submitting, and the sectional area change is not big, and width size is compared with the high dimension and is not more than 2, and length size is compared with width size and is not less than 15, and length size is not less than 2000 mm's forging.

The utility model provides a warpage measuring tool of a long rod type forging, as shown in figure 1-2, comprising a connecting rod 1 and 3 measuring devices 2; the 3 measuring devices 2 are respectively arranged at the front, middle and rear ends of the connecting rod 1;

the measuring device 2 comprises a processor 21, a display 22, a pair of calipers 23 of the digital display vernier caliper, a pair of displacement sensors and a shell; a processor 21 is arranged in the shell, a display 22 is arranged at an opening of the shell, a pair of calipers 23 respectively extend out from the upper part and the lower part of the shell and are used for clamping a long-rod forge piece to be measured, and displacement sensors used for sensing the displacement of the calipers are arranged at the tops of the calipers 23; a pair of sensors in communication with processor 21, processor 21 and display 22;

the processor is used for receiving the displacement measured by the pair of sensors, determining the difference value between the center of the forge piece at the end point position and the center of the measuring device through the displacement measured by the pair of sensors, and sending the difference value to the display 22 so that the display 22 displays the difference value.

1. Selecting a connecting rod: we determine the length of the connecting rod, typically 3M, from the maximum length of the die available for the hammer. Because the utility model is a portable measuring tool, the weight of the rod is light, and the strength of the rod is high, so that the rod is not easy to deform in the process of long-term use; as 3 measuring devices are arranged on the rod part and need to be adjusted according to the size of the forged piece, the surface of the rod part should be as smooth as possible, in conclusion, a stainless steel square pipe which is 4M in length, hollow, seamless and 1.5-2 mm in wall thickness is finally selected as a connecting rod, the straightness of the connecting rod should be less than or equal to 0.3mm, and the surface smoothness of the connecting rod should be less than or equal to 1.6. 2. Composition of the measuring device: the measuring device consists of calipers and a display, the principle of the measuring device is the same as that of a digital vernier caliper, the difference is that the digital vernier caliper measures the size by utilizing a linear measuring claw, the display directly displays the reading, only the external size which can be clamped by the measuring claw can be measured, and the size of the groove cannot be measured. Measuring device changes the straight line jack catch into calliper, can measure the size at arbitrary position, and two readings of display demonstration, reading 1 is calliper measurement size reading, promptly: the vertical dimension of the forging; reading 2 is the difference between the center of the measuring device and the center line of the connecting rod (the difference is displayed to facilitate subsequent alignment). According to experience and product characteristics, the measuring range of the measuring device is 0-300 mm, and the error is 0.02mm as the error of the vernier caliper. The installation mode principle is the same as that of a digital display vernier caliper, a display is installed on a connecting rod, and the digital display 0 position of the reading 2 is coincided with the center of the connecting rod. Two movable clamping jaws are arranged on a display, and the vertical size of the measurement part of the forge piece can be displayed along with the up-and-down movement of the clamping jaws, wherein the reading 1 shows the vertical size of the measurement part of the forge piece. 3. Fixing of the measuring device during measurement: according to the length of a long-rod forge piece, positions to be measured are found out at two ends and the middle position of the forge piece respectively, measuring devices are fixed to enable the forge piece to be incapable of moving left and right on a connecting rod, the three measuring devices are distributed linearly, the forge piece can be placed at will under the condition that a parting die faces upwards, and when calipers of the measuring devices clamp the forge piece, a display can display the vertical size (reading 1) of the forge piece at the measuring part and the difference value (reading 2) between the measuring devices and the center line of the connecting rod. The purpose of displaying the reading number 1 is to simultaneously inspect the vertical dimension of the forge piece when the warpage of the forge piece is measured, so that the repeated measurement work of the dimension of the forge piece is avoided, and the inspection efficiency is improved. And the display reading 2 is used for aligning the forge piece and visually displaying the forge piece warping value, and if the upper surface and the lower surface of the forge piece are under-pressure and consistent, the reading 2 of the display is displayed as 0, namely the front center and the rear center of the forge piece are consistent and coincide with the center of the connecting rod. If the number of the number 2 of the display shows that the difference value exists between the centers of the two ends of the forge piece and the center of the connecting rod, the two ends of the connecting rod are adjusted up and down to display the difference value as 0, so that the center of the forge piece is superposed with the center of the connecting rod. At this moment, the middle part of the forged piece is clamped by the calipers of the measuring device, the reading 2 of the display is the distance between the center of the middle part of the forged piece and the center of the connecting rod, and the display is the warping value of the forged piece because the 0 is adjusted in the early stage and the connecting center is the center of the forged piece.

Examples

As shown in FIG. 3, the length of the large long-rod forging 5 of a certain airplane is 2730mm, and the warping value is required to be controlled within 3 mm. As shown in fig. 1, at first, install 3 measuring device 2 on connecting rod 1, utilize wherein 2 measuring device 2's calliper to clip respectively the forging needs the measured front and back both ends position, two digital display device on two measuring device show two readings this moment, reading 1 is calliper measurement size reading, promptly: the vertical size of the front end and the rear end of the forging piece is equal; reading 2 is measuring device center and the convenient follow-up alignment of connecting rod central line difference (show this difference), through two ends of adjusting connecting rod (r) from top to bottom, makes reading 2 on the measuring device 2 of both sides all show to be 0, and the center of measuring device 2 of both sides coincides with forging center promptly, and the calliper card of recycling measuring device 3 needs the measuring position at the forging middle part, and the display screen can demonstrate two readings, and reading 1 is the calliper measurement size reading, promptly: the vertical size of the middle part of the forging; and reading 2 is the difference value between the center of the measuring device and the center line of the connecting rod, and at the moment, the center of the connecting rod is coincided with the center of the forging through the previous adjustment, so that the numerical value of the reading 2 is the warping value of the forging.

Claims

1. A warpage detection tool for long-rod large-scale die forgings is characterized by comprising a connecting rod (1) and 3 measuring devices (2); the 3 measuring devices (2) are respectively arranged at the front, middle and rear ends of the connecting rod (1);

the measuring device (2) comprises a processor (21), a display (22), a pair of calipers (23) of the digital display vernier caliper, a pair of displacement sensors and a shell; a processor (21) is arranged in the shell, a display (22) is arranged at an opening of the shell, a pair of calipers (23) respectively extend out from the upper part and the lower part of the shell and are used for clamping a long-rod forge piece to be tested, and displacement sensors for sensing the displacement of the calipers are arranged at the tops of the calipers (23); the pair of sensors are in communication connection with the processor (21), and the processor (21) is in communication connection with the display (22);

the processor is used for receiving the displacement measured by the pair of sensors, determining the difference value between the center of the forge piece at the end point position and the center of the measuring device through the displacement measured by the pair of sensors, and sending the difference value to the display (22) so that the display (22) displays the difference value.

2. Tool according to claim 1, characterized in that 3 measuring devices (2) are respectively fitted over the connecting rod (1) and can slide along the connecting rod (1);

when the measuring device (2) slides to a measuring point of the forge piece, the measuring device (2) is locked on the connecting rod (1) through the locking piece.

3. Tool according to claim 1, characterized in that the zero positions of 3 measuring devices (2) are all located on the centre line of the connecting rod.

4. Tool according to claim 1, characterized in that the displacement sensor is adapted to measure the amount of displacement from the zero position of the measuring device (2) to the top of the caliper (23).

5. Tool according to claim 4, characterized in that the straightness of the connecting rod (1) is less than or equal to 0.3 mm; the surface finish is less than or equal to 1.6 μm.