CN204788202U - Utensil is examined to stator inner curve profile - Google Patents

Abstract

The utility model relates to a stator internal curve profile inspection tool, which comprises a base, a fixed sleeve, a sample stator, a dial indicator bracket, and a dial indicator. The base is provided with an inclined surface, and the inclined surface is vertically connected with a positioning pin. In the fixed sleeve, there is a casing hole for axially movable socket connection between the sample stator and the stator to be measured, and when the sample stator is placed in the casing hole, the inner curved surface of the sample stator is suspended from the positioning pin; the end surface of the ring part of the sample stator is provided with Cooperate with the end face of the ring part of the stator to be determined to form a positioning part for rotation positioning, and the rotation axis is parallel to the axis of the fixed sleeve, and the positioning part and the positioning pin are farthest apart along the radial direction of the fixed sleeve; the dial indicator bracket is fixed on the base, The dial indicator is fixed on the dial indicator bracket; when the stator to be measured is placed in the fixed sleeve, the probe of the dial indicator is in contact with the inner curved surface of the stator to be measured, and the positioning pin is only suspended to contact the stator of the sample. The utility model has high detection accuracy and efficiency, and is suitable for use as a rapid detection tool for various stator inner curve profiles.

Description

Stator inner curve profile inspection tool

technical field

The utility model relates to a tool for detecting the surface of a mechanical component, in particular to a tool for detecting the inner curve contour of a pump or motor.

Background technique

The most common application of the stator is the vane pump and vane motor in the hydraulic system. The main principle is that the vane rotates on the inner curved surface of the stator to achieve volume change and generate liquid pressure. This design feature determines that the inner curved surface of the stator is composed of different arcs, and the size of the inner curve is a key factor affecting the performance of the product in all aspects. The inner curves composed of these complex arcs are processed by high-precision curve grinding machines, which are difficult to detect with ordinary measuring tools; while using three-coordinate measuring instruments, although the measurement accuracy is high, the purchase and maintenance costs are expensive, and the measurement speed is slow. parts, not ideal. For this reason, it is necessary to improve the existing stator inner curve surface inspection tool.

Contents of the invention

In order to overcome the above disadvantages, the purpose of this utility model is to provide a stator inner curve profile inspection tool in the field to solve the technical problems of high cost, inconvenient detection and poor detection accuracy of the existing similar inspection tools. Its purpose is achieved through the following technical solutions.

The stator inner curve profile inspection tool includes a base, a fixed sleeve, a sample stator, a dial indicator bracket, and a dial indicator. The main point is that the base is provided with an inclined surface, and the inclined surface is fixedly connected with a positioning pin perpendicular to the inclined surface. The fixed sleeve is in the shape of a ring cylinder, and the fixed sleeve is provided with a casing hole that is movable in the axial direction to connect the sample stator and the stator to be measured, and when the sample stator is placed in the casing hole, the inner curved surface of the sample stator is suspended from the positioning pin , each end surface of the sample stator and the fixed sleeve is in contact with the inclined surface; the end surface of the ring part of the sample stator is provided with a positioning part that cooperates with the end face of the ring part of the stator to be measured to form a positioning rotation, and the rotation axis Parallel to the axis of the fixed sleeve, the positioning part and the positioning pin are farthest apart in the radial direction of the fixed sleeve; the dial indicator bracket is fixed on the base, and the dial indicator is fixed on the dial indicator bracket; when the stator to be measured When it is movable in the fixed sleeve, the measuring head of the dial indicator contacts the inner curved surface of the stator to be measured, and the positioning pin only hangs and touches the template stator. By setting an inclined surface on the base, the sample stator is positioned on the positioning pin of the inclined surface under the action of its own weight; the fixed sleeve is movably socketed on the sample stator, so that the fixed sleeve can rotate relative to the sample stator; the fixed sleeve is movably placed in the fixed sleeve , and a rotational positioning is formed between the stator to be measured and the stator of the sample, so that when the fixed sleeve rotates relative to the stator to be measured, it will drive the stator to be measured to swing relative to the stator of the sample along the two positioning parts, and the side head contact of the dial gauge is used By measuring the inner curved surface of the stator to be measured, the reading range of the dial gauge when the stator to be measured is oscillating can be measured. If the reading range meets the requirements, the inner curve profile of the stator to be measured is qualified. The structure of the inspection tool is relatively simple, and the detection is relatively convenient and accurate.

The inclined surface forms an included angle of 50° with respect to the bottom surface of the base, and the perpendicularity between the positioning pin and the inclined surface is 0.015 mm. This structure is a better design scheme.

The positioning part of the sample stator is a pin hole, and the to-be-measured stator is provided with the same pin hole as the sample stator, and the two pin holes are movably connected by a fixed pin. This structure is used as the structure of the scheme 1 in which the template stator and the stator to be determined are rotated and positioned.

The positioning part of the template stator is a protruding shaft, and the end surface of the ring portion of the corresponding stator to be determined is provided with a shaft hole that cooperates with the protruding shaft. This structure is used as the second structure in which the model stator and the stator to be determined are rotated and positioned.

The dial indicator bracket includes a fixed rod, a movable rod, an adjustment seat, a hinged seat, and a locking member. One end of the fixed rod is threadedly connected to the top surface of the base, and the adjustment seat is slidably sleeved on the fixed rod, and the adjustment The seat and the fixed rod are locked and positioned by the locking piece; the adjustable seat is movably connected to the movable rod through the hinge seat, the hinge axis of the hinge seat is perpendicular to the fixed rod, and the movable sleeve of the fixed rod and the hinge seat connected, and the fixed rod and the hinge seat are locked and positioned by a locking member, and one end of the fixed rod is fixedly connected to the dial indicator. Through the support of the dial gauge, the flexible adjustment of the dial gauge can be realized, and the applicability can be improved.

The locking member is a locking bolt or buckle, both of which are relatively common locking methods in the prior art, and the locking is more convenient and reliable.

The utility model has the advantages of simple structure, low cost, flexible and convenient operation, high detection accuracy and high efficiency, and is suitable for use as a rapid detection tool for various stator inner curve profiles, or as a structural improvement of similar inspection tools.

Description of drawings

Fig. 1 is a schematic diagram of the three-dimensional structure of the utility model, in which the sub-measurement has been placed.

Fig. 2 is a planar sectional structural schematic diagram of a part of the structure of the utility model, in which the stator to be measured has been placed.

The names of the serial numbers in the figure are: 1. base, 101, inclined surface, 2. fixed sleeve, 3. stator to be measured, 4. fixed pin, 5. model stator, 6. positioning pin, 7. dial indicator, 8. Movable rod, 9, adjusting seat, 10, hinged seat, 11, fixed rod.

Detailed ways

Now in conjunction with accompanying drawing, the utility model is further described.

As shown in Figure 1 and Figure 2, the stator inner curve profile inspection tool includes a base 1, a fixed sleeve 2, a sample stator 5, a dial indicator bracket, and a dial indicator 7. The base is provided with a 50° inclination relative to the bottom surface of the base. Surface 101, the top of the base is provided with a horizontal top surface, and the inclined surface is provided with a pin hole near the top surface, through which a positioning pin 6 perpendicular to the inclined surface is interference fitted. The fixed sleeve is in the shape of a ring cylinder, and there is a sleeve hole in the fixed sleeve that is movable axially to connect the template stator and the stator 3 to be measured, and when the template stator is placed in the sleeve hole, the inner curved surface of the template stator is suspended from the positioning pin. Under the gravity of the sample stator and the fixed sleeve, the sample stator and the fixed sleeve are positioned on the positioning pin, and the positioning pin only contacts the inner curved surface of the sample stator, and each end surface of the sample stator and the fixed sleeve is in contact with the plane of the inclined surface. The ring part of the sample stator is provided with a pin hole 501 that runs through the ring along the axial direction of the sample stator, and the stator to be measured is provided with the same pin hole as that of the sample stator. The positioning rotation is formed, and after the flexible connection, the fixed pin and the positioning pin are farthest apart along the radial direction of the fixed sleeve. The dial indicator bracket is fixed on the base, and the dial indicator bracket includes a fixed rod 11, a movable rod 8, an adjustment seat 9, a hinged seat 10, and a locking member. The adjustment seat and the fixed rod are locked and positioned by locking bolts or buckles; the adjustment seat is movably connected to the movable rod through the hinged seat, the hinge axis of the hinged seat is perpendicular to the fixed rod, and the fixed rod and the hinged seat are movably socketed , and the fixed rod and the hinged seat are locked and positioned by locking bolts or buckles, and one end of the fixed rod is fixedly connected to the dial gauge. When the sub-meter to be measured is placed in the fixed sleeve, the measuring head of the dial indicator is in contact with the inner curved surface of the sub-meter to be measured.

In the above structure, the rotational positioning scheme between the sample stator 5 and the stator to be determined 3 can also be designed as follows: the annular end surface of the sample stator is provided with a protruding shaft, and the corresponding annular end surface of the stator to be determined is provided with a shaft hole that cooperates with the protruding shaft . The positioning and rotation between the template stator and the stator to be determined can also be realized.

The working principle of the stator inner curved surface profile inspection tool is: the template stator 5 cooperates with the fixed sleeve 2 as the benchmark for detection, the stator 3 to be tested is placed in the fixed sleeve, and the annular end faces of the stator and the sample stator are tested. Rotational positioning is formed between them, relying on the self-weight of the fixed sleeve, the sample stator, and the stator to be measured, so that the fixed sleeve can be positioned and rotated relative to the sample stator. When the fixed sleeve rotates, the inner wall of the fixed sleeve hole is in contact with the stator to be measured, thereby driving the stator to be measured to swing along the fixed pin 4 on the annular end surface of the stator of the template, and the side head of the dial indicator 7 is connected to the inner curved surface of the stator to be measured Contact, measure the value range when swinging, when the value range meets the requirements, that is to say, the internal curve profile of the tester is qualified, otherwise it is unqualified.

The above contents are intended to illustrate the technical means of the present utility model, but not to limit the technical scope of the present utility model. Those skilled in the art combined the existing common knowledge to make obvious improvements to the utility model, which also fall within the protection scope of the claims of the utility model.

Claims (6)

1. a stator inner curve outline detection, it comprises base (1), fixed cover (2), model stator (5), dial indicator bracket, dial gauge (7), it is characterized in that described base (1) is provided with dip plane (101), dip plane is fixedly connected with one perpendicular to the register pin (6) of dip plane, described fixed cover (2) is in Ring-cylindrical, the trepanning of pivot bush unit model stator (5) and stator to be measured (3) is vertically provided with in fixed cover, and model stator is when being placed in trepanning, model stator inner curve face hangs on described register pin, model stator, each end face and the described dip plane plane contact of fixed cover offset, described model track ring end surface is provided with and coordinates with the ring portion end face of described stator to be measured the location division forming position rotating, and the axis parallel of axis of rotation and fixed cover, location division and register pin are along the radial furthest apart of fixed cover, described dial indicator bracket is fixed on described base, and described dial gauge (7) is fixed on dial indicator bracket, when subactivity to be determined is placed in described fixed cover, the gauge head of described dial gauge contacts with described stator inner curve face to be measured, and described register pin only hangs the described model stator of contact.

2. stator inner curve outline detection according to claim 1, it is characterized in that described dip plane (101) is 50 ° of angles relative to base (1) bottom surface, described register pin and dip plane verticality are 0.015mm.

3. stator inner curve outline detection according to claim 1, it is characterized in that the location division of described model stator (5) is pin-and-hole (501), described stator to be measured (3) is provided with the pin-and-hole identical with model stator, is flexibly connected between two pin-and-holes by fixed pin (4).

4. stator inner curve outline detection according to claim 1, is characterized in that the location division of described model stator (5) is convex axle, and the ring portion end face of corresponding stator described to be measured (3) is provided with the axis hole coordinated with convex axle.

5. stator inner curve outline detection according to claim 1, it is characterized in that described dial indicator bracket comprises fixed bar (11), motion bar (8), adjustment seat (9), hinged seat (10), locking member, described fixed bar one end is threaded with described base (1) end face, described adjustment seat is slidably socketed in fixed bar, and by locking member locking positioning between adjustment seat and fixed bar; Described adjustment seat is flexibly connected described motion bar by hinged seat, the hinged axle center of hinged seat is vertical with described fixed bar, described fixed bar and hinged seat pivot bush unit, and by locking member locking positioning between fixed bar and hinged seat, fixed bar one end is fixedly connected with described dial gauge (7).

6. stator inner curve outline detection according to claim 5, is characterized in that described locking member is clamping screw or buckle.