Novel piston measuring equipment and piston detection frame

Abstract

The utility model is applicable to the field of piston measurement, and particularly relates to novel piston measuring equipment and a piston detection frame, which are characterized in that buckling covers are fixed at two ends of a base, a first stepping motor is fixed at one end of the buckling cover at one side, and a distance sensor is fixed at the upper end of the first stepping motor; a hollow through hole is formed in the middle of the base, a lead screw is fixed in the through hole, one end of the lead screw is fixed in the base through a bearing, and the other end of the lead screw is fixedly connected with a first stepping motor through a coupler; guide rods are arranged on the two sides of the base and fixedly connected with a movable table, a second stepping motor is fixed in the movable table, a rotary table is fixed to the upper end of the second stepping motor through a rotating shaft, and an angular displacement sensor is fixed to the upper end of the rotary table. The second stepping motor and the angular displacement sensor are arranged in the rotary table, a specific angle can be adjusted according to the angular displacement sensor, compared with existing angle adjustment, the piston can be measured at different angles, different experiment requirements and working conditions can be met, and the accuracy of an experiment result is improved.

Description

Technical Field

[0001] The utility model belongs to the field of piston measurement, and particularly relates to a new piston measurement device and a piston detection rack. Background Art

[0002] The piston is one of the important components of an automobile engine. The machining accuracy of the piston is directly related to important indicators such as the power and emissions of the engine. During the machining process of the piston, the stop is the positioning reference for each machining process of the piston. The size of the stop diameter will affect the machining accuracy of multiple processes. The size of the piston stop diameter is crucial for controlling the machining quality of each process on the entire piston production line. However, due to the structural characteristics of the piston stop, its accurate measurement is difficult.

[0003] To solve the above problems, the existing Chinese invention patent application number is CN201610506566.0, and the name is piston measuring machine. When detecting the piston, by detecting the depth of the detection groove, the outer diameter of the piston body, the height of the piston body, and the existence of the through hole in the piston body, and clamping once, the labor intensity is reduced. However, during the entire detection process, the position of the piston needs to be rotated. The existing rotation devices are all manually rotated, and the rotation angle is inaccurate, resulting in the product being judged unqualified after piston detection, low efficiency, large error, and high manufacturing cost of the piston.

[0004] In summary, there is an urgent need for a new technology to solve the problem that the rotation angle is inaccurate during piston measurement in the existing piston measurement device, resulting in high manufacturing cost of the piston. Summary of the Utility Model

[0005] The embodiment of the utility model provides a new piston measurement device and a piston detection rack, aiming to solve the problem that the rotation angle is inaccurate during piston measurement in the existing piston measurement device, resulting in high manufacturing cost of the piston.

[0006] The embodiment of the utility model is implemented as follows:

[0007] A new piston measurement device includes:

[0008] A base, which is fixed on the desktop. There are buckle covers fixed at both ends of the base. One end of one side buckle cover is fixed with a first stepping motor, and a distance sensor is fixed at the upper end of the first stepping motor;

[0009] There is a hollow through hole in the middle of the base. A lead screw is fixed in the through hole. One end of the lead screw is fixed in the base through a bearing, and the other end is fixedly connected to the first stepping motor through a coupling;

[0010] There are guide rods on both sides of the base. The guide rods are fixedly connected to a moving platform. A second stepping motor is fixed inside the moving platform. A turntable is fixed at the upper end of the second stepping motor through a rotating shaft, and an angular displacement sensor is fixed at the upper end of the turntable.

[0011] Further, the first stepping motor and the second stepping motor are linearly connected to the power supply through a controller.

[0012] Further, the mobile station is provided with oppositely arranged connecting rods, and the lower ends of the connecting rods are provided with grooves, and the connecting rods are connected to the guide rods through the grooves.

[0013] Further, a shock-absorbing film is fixed to the upper end of the turntable.

[0014] Further, the shock-absorbing film is fixedly connected to the turntable in a detachable manner, and a positioning hole is provided in the middle of the shock-absorbing film.

[0015] A piston detection rack includes the above-mentioned new piston measuring device.

[0016] The beneficial effects achieved by the present utility model are as follows:

[0017] By providing a second stepping motor and an angular displacement sensor in the turntable, the present utility model can be adjusted to a specific angle according to the angular displacement sensor. Compared with the existing angle adjustment, the present utility model can measure the piston at different angles, can be applied to different experimental requirements and working conditions, can achieve more accurate measurement, and improve the accuracy of experimental results. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of the new piston measuring device provided by the present utility model;

[0019] Figure 2 is a schematic structural diagram of the piston detection rack of the present utility model.

[0020] Reference Numerals in the Drawings:

[0021] 110, base; 111, guide rod; 112, buckle cover; 120, first stepping motor; 121, distance sensor; 130, connecting rod; 131, turntable; 132, shock-absorbing film; 133, mobile station; 200, pin hole measurement end element; 300, large diameter measurement unit. Detailed Embodiments

[0022] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] By providing a turntable, the piston can be measured at different angles. There is also a second stepping motor and an angular displacement sensor, which can be adjusted to a specific angle according to the angular displacement sensor, and can be applied to different experimental requirements and working conditions. By controlling the angle of the piston, more accurate measurement can be achieved, improving the accuracy of experimental results.

[0024] Example 1

[0025] Refer to Figure 1 In the embodiment of the present utility model, a new type of piston measuring device is provided, including: a base 110, the base 110 is fixed on the tabletop, both ends of the base 110 are fixed with cover caps 112, one end of a cover cap 112 on one side is fixed with a first stepping motor 120, and a distance sensor 121 is fixed above the first stepping motor 120;

[0026] There is a hollow through hole in the middle of the base 110, a lead screw is fixed in the through hole, one end of the lead screw is fixed in the base 110 through a bearing, and the other end is fixedly connected to the first stepping motor 120 through a coupling;

[0027] Guide rods 111 are provided on both sides of the base 110, the guide rods 111 are fixedly connected to a moving table 133, a second stepping motor is fixed inside the moving table 133, a turntable 131 is fixed above the second stepping motor through a rotating shaft, and an angular displacement sensor is fixed above the turntable 131.

[0028] In this embodiment, when the piston measuring device is used for piston measurement, the piston is rotated by a certain angle, and the side pin holes of the piston at different angles can be measured.

[0029] Specifically, in one embodiment, there is a base 110, the base 110 is used to fix the piston and enable the piston to move and rotate within a certain range. The base 110 is fixed on the tabletop. It should be noted that the tabletop is the measurement tabletop of the piston. The base 110 and the tabletop can be fixedly connected in a detachable manner, such as bolt connection, inlay connection, or threaded connection; the base 110 and the tabletop can also be fixedly connected in a non-detachable manner, such as welding, integral molding, etc. The connection method between the base 110 and the tabletop can be selected and adjusted according to actual installation requirements. In this embodiment, bolt and nut connection is preferably used.

[0030] Both ends of the base 110 are fixed with cover caps 112, the cover caps 112 are fixed at both ends of the base 110 by screws, the base 110 is used to seal and protect the lead screw inside the base 110, one end of a cover cap 112 on one side of the base 110 is fixed with a first stepping motor 120, and the first stepping motor 120 is used to drive the lead screw to rotate. It is easy to understand that the cover cap 112 is provided with a through hole, and the output shaft of the first stepping motor 120 passes through the through hole and is connected to the lead screw.

[0031] Further, a distance sensor 121 is provided at the upper end of the first stepping motor 120. Among them, the distance sensor 121 is fixed to the upper end of the first stepping motor 120 by threads, and the model of the distance sensor 121 is E3ZG-LS.

[0032] In another embodiment, a hollow through hole is provided in the middle of the base 110. A lead screw is fixed in the through hole, and the lead screw can freely rotate in the through hole. One end of the lead screw is fixed in the base 110 through a bearing. It is easy to understand that a threaded hole matching the lead screw is provided at the lower end of the moving table 133. The lead screw passes through the threaded hole, and the moving table 133 is driven to move by the rotation of the lead screw; the other end of the lead screw is fixedly connected to the first stepping motor 120 through a coupling, and the lead screw can be rotated by the drive of the first stepping motor 120.

[0033] In yet another embodiment, guide rods 111 are provided on both sides of the base 110. The guide rods 111 are fixedly connected to the moving table 133. The moving table 133 is used to fix the piston and rotate the piston by a certain angle. A second stepping motor is fixed inside the moving table 133. A turntable 131 is fixed to the upper end of the second stepping motor through a rotating shaft. An angular displacement sensor is fixed to the upper end of the turntable 131. Among them, the model of the angular displacement sensor is R60D.

[0034] It is easy to understand that the first stepping motor 120, the second stepping motor, the angular displacement sensor, and the distance sensor 121 are linearly connected to the controller and the power supply. The working states of the first stepping motor 120 and the second stepping motor are controlled by the controller. It should be explained that the controller has certain storage and calculation capabilities, and the model of the controller is H5U.

[0035] Based on the above structure, during assembly, the base 110 is fixed to the desktop by screws, and then the lead screw is inserted into the through hole in the middle of the base 110. One end of the lead screw is fixed to the base 110 on one side inside the through hole through a bearing. The other end of the lead screw is connected to the first stepping motor 120 through a coupling. Then, the second stepping motor is fixed inside the moving table 133, the turntable 131 is fixed to the upper end of the second stepping motor, the moving table 133 is fixedly connected to the guide rods 111, and then the piston is fixed to the upper end of the turntable 131. When data at different angles of the piston need to be detected, the second stepping motor is used to drive the turntable 131 to rotate by a certain angle, so that different angles of the piston face the detection device, and then the detection device completes the detection of the piston.

[0036] By providing the turntable 131, the piston can be measured at different angles. There are also a second stepping motor and an angular displacement sensor, and the specific angle can be adjusted according to the angular displacement sensor, which can be applicable to different experimental requirements and working conditions. By controlling the angle of the piston, more accurate measurement can be achieved, and the accuracy of the experimental results can be improved.

[0037] Example 2

[0038] See Figure 1 , in the embodiment of the present utility model, the first stepping motor 120 and the second stepping motor are linearly connected to the power supply through a controller.

[0039] In this embodiment, the first stepping motor 120 and the second stepping motor are linearly connected to the power supply through a controller. It should be explained that the controller has certain calculation and storage functions. For the first stepping motor 120 and the second stepping motor, the first stepping motor 120 is used to drive the lead screw to rotate, thereby driving the moving table 133 to move horizontally. The second stepping motor is used to drive the turntable 131 to rotate. The controller controls the operation or stop of the first stepping motor 120 through the signal fed back by the distance sensor 121. Specifically, different piston sizes are stored in the controller. When measuring the horizontal length of the piston, the distance sensor 121 detects the position of the piston and transmits the data to the controller in real time. The controller controls the working state of the first stepping motor 120, thereby realizing the horizontal movement of the piston; when measuring the data of different angles of the piston, the angular displacement sensor detects the position of the turntable 131 where the piston is located in real time and transmits the position information of the turntable 131 to the controller. The controller controls the turntable 131 to rotate according to the preset data.

[0040] By linearly connecting the first stepping motor 120 and the second stepping motor to the controller respectively, the design of the control system can be simplified. Multiple motors can be managed by one controller, reducing the system complexity and facilitating the later maintenance and installation.

[0041] Example 3

[0042] See Figure 1 , in the embodiment of the present utility model, the moving table 133 is provided with oppositely arranged connecting rods 130. The lower end of the connecting rod 130 is provided with a groove, and the connecting rod 130 is connected to the guide rod 111 through the groove.

[0043] In this embodiment, the moving table 133 is provided with oppositely arranged connecting rods 130. The connecting rod 130 is used to connect the guide rod 111 and enable the moving table 133 to move along the guide rod 111. The connecting rod 130 and the moving table 133 can be connected by screws. The lower end of the connecting rod 130 is provided with a groove. The shape of the groove can be an arc shape, a rectangular shape, or a conical shape. The above are specific examples of the groove shape. The specific shape can be selected according to the actual shape of the guide rod 111.

[0044] During installation, make the groove on one side of the connecting rod 130 fit onto the guide rod 111, then make the connecting rod 130 on the other side of the moving platform 133 fit onto the guide rod 111, and finally fix the connecting rod 130 to the moving platform 133 with a pin. It should be noted that after installation, the moving platform 133 can move along the direction of the connecting rod 130 through the connecting rod 130.

[0045] In this embodiment, by providing a connecting rod 130 connected to the guide rod 111, with a groove provided on the connecting rod 130 and connected to the guide rod 111 through the groove, the design of the groove can provide an accurate guide for the connecting rod 130, better maintaining the positioning and stability of the connecting rod 130 during the movement of the moving platform 133 and reducing movement errors.

[0046] Example 4

[0047] See Figure 1 , in the embodiment of the present utility model, a shock-absorbing film 132 is fixed to the upper end of the turntable 131.

[0048] In this embodiment, a shock-absorbing film 132 is fixed to the upper end of the turntable 131. The shock-absorbing film 132 is located between the piston and the turntable 131 and can play a protective role when installing the piston. The provision of the shock-absorbing film 132 can enable the piston to be better fixed on the turntable 131.

[0049] Example 5

[0050] See Figure 1 , in the embodiment of the present utility model, the shock-absorbing film 132 and the turntable 131 are fixedly connected in a detachable manner, and a positioning hole is provided in the middle part of the shock-absorbing film 132.

[0051] In this embodiment, the shock-absorbing film 132 and the turntable 131 are fixedly connected in a detachable manner. The specific method can be to fix them by screws, or it can also be by an inlaying method. It should be explained that if the shock-absorbing film 132 and the turntable 131 are fixedly connected by an inlaying method, make the shock-absorbing film 132 have an inlaying convex block, and at the corresponding position of the turntable 131, there is an inlaying groove for inlaying connection. When connecting the shock-absorbing film 132 and the turntable 131, make the inlaying convex block of the shock-absorbing film 132 inlay in the inlaying groove of the turntable 131.

[0052] In another embodiment, a positioning hole is provided in the middle part of the shock-absorbing film 132 for positioning when installing the piston. The shape of the positioning hole can be circular or square. The above are specific examples of the shape of the positioning hole, and the specific shape can be adjusted according to the actual shape of the piston.

[0053] The material of the shock-absorbing film 132 can be rubber or plastic. In this embodiment, rubber material is preferably selected. The shock-absorbing film 132 is fixed on the turntable 131 by bonding.

[0054] By providing the shock-absorbing film 132 and having a positioning hole at the upper end of the shock-absorbing film 132, the design of the positioning hole can ensure that the piston can be installed at the accurate position of the shock-absorbing film 132 during installation, thereby ensuring the working accuracy when measuring the piston and avoiding deviation in piston data measurement caused by position deviation.

[0055] Example 6

[0056] As Figure 2 shown, a piston detection rack includes the above-mentioned new piston measuring device. The piston detection rack further includes a precision positioning table: The precision turntable 131 is composed of a precision bearing, an internal servo motor, an angle encoder, and a positioning tooling. Matching tooling is made according to different piston sizes, and the servo motor cooperates with the positioning tooling for angular adjustment and end face positioning.

[0057] Pin hole measurement end element 200: The pin hole measurement unit is composed of a precision cross slide table, a guide rail, a module, a cylinder, a pneumatic probe, and a data processing unit. According to different piston sizes, the module automatically adjusts the corresponding position, selects the corresponding matching pneumatic probe, and is pushed by air pressure into the hole diameter for data acquisition and processing to realize pin hole diameter measurement.

[0058] The large diameter measurement unit 300 is composed of 4 groups of precision modules and 2 precision pneumatic displacement sensors; according to different sizes and heights of the piston large diameter, the precision module moves the pneumatic displacement sensor to the corresponding height and diameter preset position, and the corresponding data is obtained and processed by the precision sensor to realize large diameter size measurement.

[0059] In the description of this specification, the descriptions with reference to terms such as "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0060] In addition, the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A novel piston measuring device, comprising a base which is fixed on a desktop, characterized in that, At both ends of the base, there are fixed cover caps. At one end of one of the cover caps, there is fixed a first stepping motor, and at the upper end of the first stepping motor, there is fixed a distance sensor; In the middle of the base, there is a hollow through hole, and a lead screw is fixed in the through hole. One end of the lead screw is fixed in the base through a bearing, and the other end is fixedly connected to the first stepping motor through a coupling; On both sides of the base, there are guide rods which are fixedly connected to a moving table. Inside the moving table, there is fixed a second stepping motor, and at the upper end of the second stepping motor, there is fixed a turntable through a rotating shaft, and at the upper end of the turntable, there is fixed an angular displacement sensor.

2. The novel piston measuring device according to claim 1, characterized in that, The first stepping motor and the second stepping motor are linearly connected to a power supply through a controller.

3. The novel piston measuring device according to claim 1, characterized in that, The moving table is provided with oppositely arranged connecting rods, and at the lower end of the connecting rods, there are grooves, and the connecting rods are connected to the guide rods through the grooves.

4. The novel piston measuring device according to claim 1, characterized in that, At the upper end of the turntable, there is fixed a shock-absorbing film.

5. The novel piston measuring device according to claim 4, characterized in that, The shock-absorbing film is fixedly connected to the turntable in a detachable manner, and a positioning hole is provided in the middle part of the shock-absorbing film.

6. A piston detection rack, characterized in that, It includes the novel piston measuring device according to any one of claims 1 to 5.

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