CN207867909U - A kind of measurement Gear Root residual stress angle regulator - Google Patents

Abstract

An angle adjustment device for measuring gear tooth root residual stress, including a rotating shaft installed on a supporting base, two supporting seats and an angle adjusting seat installed on the top of the rotating shaft in a cantilever manner, at the level of the two supporting seats The end is equipped with a support rod with a U-shaped fork structure at the upper end, and the upper end of the support rod is connected with the intermediate connecting part through a horizontally arranged shaft; The rod is marked with an angle scale; a loading tray is placed on the top of the intermediate connecting part and the roller; the top surface of the intermediate connecting part is combined with the bottom surface of the loading tray through screws, and the roller and the bottom surface of the loading tray are set. The radial guide grooves are matched; a protractor is arranged on the upper plane of the loading tray, and a small loading tray and a clamping device for placing workpieces are installed at the center position of the upper plane of the loading tray.

Description

An Angle Adjustment Device for Measuring Gear Dedendum Residual Stress

technical field

The utility model relates to a device for converting the physical quantity of length and angle, in particular to an angle adjustment device for measuring gear root residual stress.

Background technique

At present, the most widely used residual stress measurement method in engineering is the X-ray stress analysis method with mature technology, small error, high repeatability and high reliability. The residual stress measurement method includes the same tilt method and the side tilt method. However, no matter which method is used, it is necessary to keep the detection plane level. At present, it is mainly realized by fixing it with plasticine. This method not only takes a long time, but also it is extremely difficult to ensure the level of the detection plane through naked eye observation, which is prone to large errors.

Contents of the invention

The purpose of this utility model is to provide an angle adjustment device for measuring the residual stress of gear tooth root in view of the shortcomings in the above-mentioned prior art.

The purpose of this utility model can be achieved through the following technical measures:

The angle adjustment device for measuring gear root residual stress of the utility model includes a rotating shaft installed on a supporting base, two supporting seats and an angle adjusting seat installed on the top of the rotating shaft in a cantilever manner. A support rod with a U-shaped fork structure is installed on the horizontal extension ends respectively in a vertical manner, and the upper end of the support rod is connected with the loading tray through a rotating shaft and an intermediate connecting part; The vertical setting method is installed with an angle adjustment rod with a roller on the top, and the angle scale is marked on the angle adjustment rod (find the correspondence between H and θ through H=L*tanθ-r*(1/cosθ-1) Relationship, marked on the adjustment rod), a carrier tray is placed on the top of the roller; the intermediate connecting part is combined with the bottom surface of the carrier tray through screws, and the roller is connected to the radial guide groove set on the bottom surface of the carrier tray Cooperate; a protractor is arranged on the upper plane of the loading tray, and a small loading tray and a clamping device for placing workpieces are installed at the center of the upper plane of the loading tray.

In the utility model, the rotating shaft is screwed together with the supporting base through a threaded connection; two supporting seats and an angle adjusting seat are arranged on the top of the rotating shaft with an included angle of 120°.

The angle adjustment rod is vertically worn in the through hole at the end of the angle adjustment seat, and the height of the angle adjustment rod is controlled by the jack wire on the side.

The bottom surface of the support base that supports the entire device is a horizontal structure to ensure the levelness of the entire device.

The support rod is combined with the support seat in a threaded manner.

The intermediate connecting part is composed of a vertically arranged connecting shaft plate combined with a rotating shaft, and a connecting plate fixed on the top of the connecting shaft plate.

In the utility model, what plays the role of supporting the whole device is that the bottom surface of the support base is a horizontal plane structure (high-precision plane) to ensure the levelness of the whole device; the support rod is combined with the support base in a threaded manner.

The utility model converts the length of the adjustment rod into the device for adjusting the angle, including measurement, the loading plate is supported by three points (composed of two support rods and an angle adjustment rod), and the level that is difficult to observe with the naked eye is adjusted to a tangent that is easy to observe Geometric relationship, through H=L*tanθ-r*(1/cosθ-1), find out the corresponding relationship between H and θ, according to the deduced formula, mark the corresponding scale on the angle adjustment rod, and the angle that is not easy to measure It becomes a tangential geometric relationship that is easy to observe, and the angle is directly read after the sample is moved back and forth to determine the tangential relationship.

The utility model can also combine the rotating shaft with the support base through the bearing, and can add a DC motor (DC deceleration motor) and a transmission device below, and input it to the rotating shaft after adjusting the speed, so that the loading plate can rotate.

The utility model changes the shortcoming of poor control of the balance when using plasticine to fix the gear in the prior art, and changes it to use a measuring device to measure the angle that needs to be adjusted in a tangential manner, then use the angle adjusting device to adjust the angle, and finally tighten it with a clamping device fixed.

The beneficial effects of the utility model are as follows:

Compared with the prior art, the utility model has the advantages of high stability, fast adjustment speed and accurate adjustment. Compared with the previous method of plasticine to observe and adjust the level with the naked eye, the device adopts the method of tangential straight line and arc, which greatly The accuracy is greatly improved; the original plasticine fixed support is replaced by the method of adjusting the angle adjustment rod and tightening with a series of screws, which improves the adjustment speed and stability.

Description of drawings

Fig. 1 is the front view of the utility model.

Fig. 2 is a partial structural diagram of Fig. 1 (the rotating shaft part).

Fig. 3 is a partial structural diagram (support rod part) of Fig. 2 . Fig. 4 is a diagram of the cooperation mode between the protractor and the loading tray.

Serial numbers in the figure: 1 rotating shaft, 2 supporting seat, 3 angle adjusting seat, 4 angle adjusting rod, 5 connecting plate 5, 6 loading plate, 7 rotating shaft, 8 connecting shaft plate, 9 supporting rod, 10 clamping device, 11 Roller, 12 roller shafts, 13 support bases, 14 loading trays.

Detailed ways

The utility model will be further described below in conjunction with embodiment (accompanying drawing):

As shown in Figures 1 and 2, the measuring gear root residual stress angle adjustment device of the present invention includes a rotating shaft 1 installed on a supporting base 13, and two supporting bases 2 mounted on the top of the rotating shaft 1 in a cantilever manner. And an angle adjustment seat 3, a support rod 9 with a U-shaped fork structure at the upper end is installed vertically on the horizontally extending ends of the two support seats 2 respectively, and a rotating shaft 7 arranged horizontally at the upper end of the support rod 9 It is connected with the intermediate connecting part, which is composed of the connecting shaft plate 8 combined with the rotating shaft 7 arranged vertically, and the connecting plate 5 fixed on the top of the connecting shaft plate 8 (see Figure 3); The horizontal outstretched end of seat 3 is installed with the angle adjusting bar 4 that a top is provided with roller 11 in the mode of being vertically arranged, and angle scale is marked on angle adjusting bar 4 (by H=L*tanθ-r*(1/ cos θ-1) find out the corresponding relationship between H and θ, and mark it out on the adjustment bar); Place the object tray 6 on the top of the connecting plate 5 and the roller 11; the top surface of the connecting plate 5 is connected with the connecting piece The bottom surface of the loading tray 6 is combined, and the roller 11 cooperates with the radial guide groove provided on the bottom surface of the loading tray 6; A small tray 14 and a clamping device for placing workpieces are installed at the place.

The rotating shaft 1 described in the utility model is screwed together with the supporting base 13 through threaded connection; two supporting seats 2 and an angle adjusting seat 3 are fixed on the rotating shaft by nuts in a manner that the included angle is 120°. 1 top; the angle adjustment rod 4 is vertically worn in the through hole processed at the horizontal extension end of the angle adjustment seat 3, and the height positioning of the angle adjustment rod 4 is realized by the top screw provided on the side.

In the utility model, the bottom surface of the support base 13 that supports the entire device is a horizontal structure (high-precision plane) to ensure the levelness of the entire device; the support rod 9 is combined with the support base 2 in a threaded manner .

The utility model converts the length of the adjusting rod into a device for adjusting the angle, including measurement, and the loading tray is supported by three points (composed of two support rods 9 and an angle adjusting rod 4), which adjusts the level that is difficult to observe with the naked eye to the level that is easy to observe. For the tangent geometric relationship, find out the corresponding relationship between H and θ through H=L*tanθ-r*(1/cosθ-1). According to the derived formula, mark the corresponding scale on the angle adjustment rod, which will not be easy to measure The angle becomes a tangent geometric relationship that is easy to observe, and the angle is directly read out after the tangent relationship is determined by moving the sample back and forth.

The utility model can also combine the rotating shaft 1 with the support base 13 through the bearing, and can add a DC motor (DC deceleration motor) and a transmission device at the bottom, and input it to the rotating shaft after adjusting the speed, so that the loading plate can rotate .

The utility model changes the shortcoming of poor control of the balance when using plasticine to fix the gear in the prior art, and changes it to use a measuring device to measure the angle that needs to be adjusted in a tangential manner, then use the angle adjusting device to adjust the angle, and finally tighten it with a clamping device fixed.

More specifically: one end of two support bases 2 and one angle adjustment base 3 is fixed on the rotating shaft 1 by a nut, and the two of the three form an angle of 120° with each other, forming the connecting plate 5 of the intermediate connecting part and the load. The disc 6 is connected by screws, and the roller 11 on the upper end of the angle adjustment rod 4 can slide back and forth in the groove on the lower surface of the loading tray. The angle measuring device fixes a protractor perpendicular to the plane of the loading tray on the loading tray (as shown in Figure 4 ), the protractor is tangent to the upper surface of the protractor, and the experimental material can move back and forth on the loading plate to adjust the position. The object tray needs to adjust the angle θ, and then adjust the angle through the angle adjustment lever. The angle adjustment device can be simplified as the following model, three points support the loading tray, two points are fixed, and the angle adjustment lever can be moved up and down to adjust Angle, three points form an isosceles triangle, two fixed points are connected to form the base of the isosceles triangle, and the three support rods (two support seats 2 and one angle adjustment seat 3) are 120° to each other. Assuming the height of the isosceles triangle is L, then the angle adjustment rod is raised from the horizontal position to a height of H=tanθ*L (when H=0, the loading plate is horizontal), considering that the adjustment rod is realized by rolling the roller in the groove, The support point will change, let the roller radius be r, the above formula should be adjusted to H=L*tanθ-r*(1/cosθ-1), through H=L*tanθ-r*(1/cosθ-1) Find out the corresponding relationship between H and θ, and mark it on the adjustment rod.

During the experiment, first put the material (gear tooth root) used in the experiment on the loading plate to search for the position back and forth, wait for a certain angle of the protractor to be tangent to the tooth root arc, read the angle, that is, the adjustment rod needs to be adjusted The angle is adjusted by the angle adjustment lever 4, and the angle adjustment lever 4 can realize quick adjustment. After the angle is measured, the tooth root of the gear should be placed on the clamping device 10. The clamping device is composed of two vertical planes and some fastening screws, and the experimental material is placed close to the two vertical planes. It is negligible, so it only needs a small force to act on the sample without changing its position. Several fastening screws are used. After measuring the angle, the right side is fixed by the fastening screw. The fastening force here is small and does not affect the test results. .

Claims (6)

1. a kind of measurement Gear Root residual stress angle regulator, it is characterised in that：It includes that setting is mounted on branch support group Seat（13）On rotary shaft（1）, it is mounted on rotary shaft in cantilever fashion（1）Two support bases at top（2）With an angle tune Save seat（3）, in two support bases（2）Horizontal end installation there are one upper end take the shape of the letter U fork structure supporting rod（9）, supporting rod （9）Upper end passes through horizontally disposed shaft（7）It is connected with intermediate connecting part；In angular adjustment seat（3）Horizontal end installation Top is provided with idler wheel（11）Angular adjustment bar（4）, in angular adjustment bar（4）It is marked with angle index；Connect in the centre Relay part, idler wheel（11）Top is placed with carrying disk（6）；The top surface of the intermediate connecting part passes through screw and carrying disk（6） Bottom surface is combined, the idler wheel（11）With carrying disk（6）The radial guide groove of bottom surface setting matches；In the carrying disk（6）On Plane is provided with protractor, in the carrying disk（6）Loading shallow bid for placing workpiece is installed at upper planar central position （14）And clamping device.

2. measurement Gear Root residual stress angle regulator according to claim 1, it is characterised in that：The rotation Axis（1）The mode and support base being connected through a screw thread（13）Spinning is together；Two support bases（2）With an angular adjustment seat （3）It is mounted on rotary shaft in such a way that angle is in 120 ° of arrangements（1）Top.

3. measurement Gear Root residual stress angle regulator according to claim 1, it is characterised in that：The angle Adjusting rod（4）It is installed on angular adjustment seat vertically（3）In the through-hole of end, and angle adjusting rod is controlled by the jackscrew of side （4）Height.

4. measurement Gear Root residual stress angle regulator according to claim 1, it is characterised in that：It is whole to play support The support base of a device effect（13）Bottom surface is horizontal plane structure, to ensure the levelness of whole device.

5. measurement Gear Root residual stress angle regulator according to claim 1, it is characterised in that：The support Bar（9）Threadably with support base（2）It is combined.

6. measurement Gear Root residual stress angle regulator according to claim 1, it is characterised in that：The centre Connecting component is by be vertically arranged and shaft（7）The connection axillare being combined（8）, be fixed in connection axillare（8）The company at top Connect disk（5）Composition.