CN218443830U - Special device for detecting conical surface of return disc - Google Patents
Special device for detecting conical surface of return disc Download PDFInfo
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- CN218443830U CN218443830U CN202222434070.0U CN202222434070U CN218443830U CN 218443830 U CN218443830 U CN 218443830U CN 202222434070 U CN202222434070 U CN 202222434070U CN 218443830 U CN218443830 U CN 218443830U
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- return stroke
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Abstract
The application discloses a special device for detecting the conical surface of a return stroke disc, which is characterized by comprising a base block, a detection rod, a spherical seat and a high-precision displacement measuring meter, wherein the upper surface of the base block is used for placing a calibration block or the return stroke disc to be detected, the center of the upper surface of the base block is provided with an inwards-sunken step plane, the lower end of the detection rod extends into and abuts against the step plane, the spherical seat is sleeved outside the detection rod in a hollow way, the upper end of the spherical seat is provided with a meter clamp for connecting the high-precision displacement measuring meter, and the lower end of a measuring head of the high-precision displacement measuring meter is connected with the upper end of the detection rod; the detection rod is provided with a spring support step, the reset spring is sleeved outside the measuring head and the detection rod, and two ends of the reset spring are respectively connected with the spring support step and the meter clamp. The application provides a return stroke dish conical surface detects isolated plant, convenient to use, swift, accurate, the precision is high, and device low in manufacturing cost requires low return stroke dish quality and the technological quality control of being convenient for to service environment.
Description
Technical Field
The application discloses return stroke dish conical surface detects isolated plant relates to hydraulic motor core spare part size detection technical field.
Background
In the field of engineering machinery, a return disc is one of core parts of a hydraulic motor. In the axial plunger pump, the return disc mainly has the function of compressing the sliding shoes to ensure that the surfaces of the sliding shoes are uniformly attached to the working surface of the swash plate, so that the plunger reciprocates in a plunger hole of a cylinder body to finish the functions of oil suction and oil discharge. The conical surface of the return disc is matched with the spherical surface of the spherical hinge to form a spherical hinge pair, and the contact mode between the conical surface of the return disc and the spherical surface of the spherical hinge is line contact under normal conditions. The diameter of the conical surface of the return disc determines the spherical surface matching position and angle of the spherical hinge, and influences the torque transmission and flexibility of the spherical hinge pair, so that the quality of the conical surface of the return disc is also one of the key factors influencing the service life of the motor. Due to the inherent characteristics of the conical surface of the return disc, the machining procedures are multiple, the measurement cannot be carried out in the machining process, only a three-coordinate measuring machine can be used for detection at the present stage, the detection is complex, and the quality is difficult to guarantee.
SUMMERY OF THE UTILITY MODEL
The purpose of this application is to provide the device of return stroke dish conical surface diameter measurement is exclusively used in, improves return stroke dish conical surface detection efficiency and reliability.
In order to solve the technical problem, the technical scheme of the application provides a special device for detecting the conical surface of a return stroke disc, and the special device is characterized by comprising a base block, a detection rod, a spherical seat and a high-precision displacement measuring meter, wherein the upper surface of the base block is used for placing a calibration block or the return stroke disc to be detected, an inwards-concave step plane is formed in the center of the upper surface of the base block, the lower end of the detection rod extends to abut against the step plane, the spherical seat is sleeved outside the detection rod in a hollow mode, a meter clamp used for connecting the high-precision displacement measuring meter is arranged at the upper end of the spherical seat, and the lower end of a measuring head of the high-precision displacement measuring meter is connected with the upper end of the detection rod; the detection rod is provided with a spring support step, the reset spring is sleeved outside the measuring head and the detection rod, and two ends of the reset spring are respectively connected with the spring support step and the meter clamp.
Preferably, the high-precision displacement measuring gauge is a dial gauge.
Preferably, the side wall of the spherical seat is provided with a threaded through hole, the position of the detection rod, which is opposite to the threaded through hole, is provided with a limit groove, a set screw is arranged in the threaded through hole, and one end of the set screw extends into the limit groove to limit the up-down moving range of the detection rod.
The application provides a return stroke dish conical surface detects isolated plant for measure return stroke dish conical surface diameter, obtain the true measured value of surveying the part for the standard block, calculate and obtain return stroke dish conical surface diameter, convenient to use, it is swift, accurate, the precision is high, device low in manufacturing cost, require lowly to service environment, do not need special testing platform and equipment, compare in other measuring methods, not only can shorten measuring time, improve the degree of accuracy, can also practice thrift the cost, be convenient for return stroke dish quality and process quality control, guarantee the machining precision, improve product quality.
Drawings
Fig. 1 is a schematic structural diagram of a device dedicated for detecting a conical surface of a return disc provided in the embodiment.
Detailed Description
In order to make the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Examples
The embodiment provides a special device for detecting the conical surface of a return disc, which is used for detecting the diameter of the conical surface of the return disc, and the device is shown in fig. 1 and comprises a base block 1, a standard block 2, a spherical seat 3, a set screw 4, a detection rod 5, a return spring 6, a connecting screw 7, a meter clamp 8 and a high-precision displacement measuring meter 9.
The base block 1 serves as a foundation, the surface of the base block is used for placing a calibration block 2 or a return disc to be tested, an inward-concave step plane is formed in the center of the surface of the base block 1, one end of a detection rod 5 extends to abut against the step plane, the detection rod 5 is enabled to be vertical to the base block 1, a spherical seat 3 is sleeved outside the detection rod 5 in a hollow mode, one end, far away from the base block 1, of the spherical seat 3 is fixedly connected with a meter clamp 8 through a screw 7, a high-precision displacement measuring meter 9 is fixedly installed on the meter clamp 8, the high-precision displacement measuring meter 9 is a commercially available dial gauge, and a measuring head of the high-precision displacement measuring meter 9 is fixedly connected with the detection rod 5; the detection rod 5 is provided with a spring support step, the reset spring 6 is sleeved outside the measuring head and the detection rod 5, and two ends of the reset spring 6 are respectively connected with the spring support step and the meter clamp 8.
Furthermore, the side wall of the spherical seat 3 is provided with a threaded through hole, the position of the detection rod 5, which is over against the threaded through hole, is provided with a limit groove, the set screw 4 is installed in the threaded through hole, and the set screw 4 extends into the limit groove to limit the up-down moving range of the detection rod 5.
Before the special device for detecting the conical surface of the return disc, a standard block 2 and a detection rod 5 are detected by a higher-level detection tool to obtain a correction value a; three-coordinate assays are typically used, with assay cycles of typically half a year. When the device is used, the standard block 2 is placed on the base block 1, then the end face, facing the step plane of the base block 1, of the detection rod 5 abuts against and is flatly attached to the step plane, the detection rod 5 is kept static, the spherical seat 3 is pressed downwards, the lower end of the spherical seat 3 is made to be attached to the calibration block 2, the high-precision displacement measuring meter 9 generates a reading, and the reading of the high-precision measuring meter is cleared to 0; the force pressing the spherical seat 3 downwards is relieved, and the return spring 6 returns the detection rod 5 to the initial position; replacing the standard block 2 with a part to be measured, repeating the above actions, generating a new reading b by the high-precision displacement measuring meter 9, and calculating the diameter D of the conical surface of the return disc by the following formula:
D＝D 0 +a+b*K (1)
in the formula: d 0 Representing the nominal diameter of the conical surface of the return disc; k represents a numerical correction coefficient, and 0.5359 is selected as the correction coefficient in the present embodiment.
Claims (3)
1. The device special for detecting the conical surface of the return stroke disc is characterized by comprising a foundation block (1), a detection rod (5), a spherical seat (3) and a high-precision displacement measuring meter (9), wherein the surface of the foundation block (1) is used for placing a calibration block (2) or the return stroke disc to be detected, an inwards-concave step plane is formed in the center of the surface of the foundation block (1), the lower end of the detection rod (5) extends to abut against the step plane, the spherical seat (3) is sleeved outside the detection rod (5) in a hollow mode, a meter clamp (8) used for connecting the high-precision displacement measuring meter (9) is arranged at the upper end of the spherical seat (3), and the lower end of a measuring head of the high-precision displacement measuring meter (9) is connected with the upper end of the detection rod (5); the detection device is characterized in that a spring supporting step is arranged on the detection rod (5), the reset spring (6) is sleeved outside the measuring head and the detection rod (5), and two ends of the reset spring (6) are respectively connected with the spring supporting step and the meter clamp (8).
2. The special device for detecting the conical surface of the return disc as claimed in claim 1, wherein the high-precision displacement measuring gauge (9) is a dial gauge.
3. The special device for detecting the conical surface of the return stroke disc as claimed in claim 1, wherein a threaded through hole is formed in the side wall of the spherical seat (3), a limit groove is formed in the position of the detection rod (5) opposite to the threaded through hole, a set screw (4) is arranged in the threaded through hole, and one end of the set screw (4) extends into the limit groove to limit the up-down movement range of the detection rod (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222434070.0U CN218443830U (en) | 2022-09-14 | 2022-09-14 | Special device for detecting conical surface of return disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222434070.0U CN218443830U (en) | 2022-09-14 | 2022-09-14 | Special device for detecting conical surface of return disc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218443830U true CN218443830U (en) | 2023-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222434070.0U Active CN218443830U (en) | 2022-09-14 | 2022-09-14 | Special device for detecting conical surface of return disc |
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| CN (1) | CN218443830U (en) |
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2022
- 2022-09-14 CN CN202222434070.0U patent/CN218443830U/en active Active
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