Piston pin hole measuring device

Abstract

The utility model relates to the technical field of pin hole measurement, and discloses a piston pin hole measuring device which comprises a bottom plate body, a concave frame is fixedly installed on the top end wall face of the bottom plate body, a movable sliding groove is formed in the top end wall face of the concave frame, and a sliding block is arranged in the movable sliding groove. A dial indicator used for measuring a piston pin hole is fixedly installed on the wall face of the bottom end of the sliding block, a driving mechanism used for moving the sliding block is arranged on the outer wall face of the right side of the concave frame, the driving mechanism comprises a driving motor and a driving screw rod, and installation blocks are fixedly installed on the wall faces of the top ends of the front side and the rear side of the bottom plate body correspondingly. First electric telescopic rods are fixedly mounted on the opposite wall faces of the two mounting blocks. A piston is placed between the two clamping blocks, the two first electric telescopic rods are started to drive the two supporting rods and the two clamping blocks to move oppositely, the two clamping blocks clamp and fix the piston, the two T-shaped sliding plates slide upwards, the clamping block matched with the piston in size is further replaced, operation is easy, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of pin hole measurement, in particular to a piston pin hole measuring device. Background Art

[0002] The piston is a key component in an internal combustion engine. The verticality of the piston pin hole is crucial to the fit and force applied to the connecting rod. Excessive verticality not only hinders assembly of the piston pin and connecting rod, but also causes uneven force on the pin hole and connecting rod as the piston moves within the cylinder liner, leading to increased piston wear. Therefore, in actual production, excessive verticality can occur due to various factors, including processing equipment. To ensure product quality and avoid batch rejection, online, real-time testing of the pin hole verticality is essential.

[0003] The existing piston pin hole measuring device has high cost of the inspection tool and low detection efficiency when in use. In addition, the fixture for fixing the piston cannot be replaced during measurement, which makes it impossible to clamp and fix pistons of different sizes. It has low adaptability and low practicality.

[0004] To this end, we propose a piston pin hole measuring device. Utility Model Content

[0005] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a piston pin hole measuring device.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a piston pin hole measuring device, comprising a base plate body, a concave frame fixedly mounted on the top wall of the base plate body, a movable slide groove being opened on the top wall of the concave frame, a slider being arranged in the movable slide groove, a dial indicator for measuring the piston pin hole being fixedly mounted on the bottom wall of the slider, a driving mechanism for moving the slider being arranged on the right outer wall of the concave frame, the driving mechanism comprising a driving motor and a driving screw, mounting blocks being fixedly mounted on the front and rear top walls of the base plate body respectively, an electric telescopic rod being fixedly mounted on the opposite walls of the two mounting blocks, a clamping mechanism for clamping the piston being respectively arranged on the ends of the two electric telescopic rods close to each other, and the clamping mechanism comprising two mounting seats, two T-shaped slides, two support rods and two clamping blocks.

[0007] As an optimal technical solution of the present invention, the driving motor is fixedly mounted on the right outer wall of the concave frame, the right end of the driving screw passes through the concave frame and is fixedly sleeved on the left output end of the driving motor, and the left end of the driving screw is movably sleeved on the left inner wall of the movable slide.

[0008] As a preferred technical solution of the present invention, the sliding block is provided with threaded holes penetrating the left and right side walls, and the threaded holes are threadedly connected to the driving screw.

[0009] As a preferred technical solution of the present invention, the bottom wall of the slider is fixedly connected to the electric telescopic rod 2, and the bottom output end of the electric telescopic rod 2 is fixedly connected to a dial indicator.

[0010] As a preferred technical solution of the present invention, the two mounting seats are respectively fixedly mounted on the output ends of the two electric telescopic rods, and T-shaped sliding grooves are respectively provided on the walls of the two mounting seats that are close to each other.

[0011] As a preferred technical solution of the present invention, the two T-shaped slides are respectively slidably arranged in the corresponding two T-shaped slide grooves, and the two support rods are respectively fixedly mounted on the end walls of the two T-shaped slides away from each other.

[0012] As a preferred technical solution of the present invention, the ends of the two support rods that are close to each other are respectively fixedly mounted on the wall surfaces of the ends of the corresponding two clamping blocks that are away from each other.

[0013] The utility model provides a piston pin hole measuring device, which has the following beneficial effects:

[0014] 1. This piston pin hole measuring device, when in use, places the piston between two clamping blocks, starts two electric telescopic rods, drives two support rods and two clamping blocks to move towards each other, and finally makes the two clamping blocks clamp and fix the piston. When it is necessary to fix pistons of different sizes, the two T-shaped slides are slid out upwards to further replace the clamping blocks that are compatible with the piston size. The operation is simple and practical.

[0015] 2. When using this piston pin hole measuring device, after the piston is fixed, start the electric telescopic rod 2, so that the measuring head of the dial indicator measuring part is pressed appropriately on the outer end face of the piston pin hole, turn on the drive motor, and drive the screw through the transmission shaft to drive the slider and the dial indicator to move horizontally. During the movement, ensure that the measuring head of the measuring part is in full contact with the outer end face of the pin hole, and record the maximum and minimum values ​​of the measuring part reading. Since the measuring head contacts the outer end face at different positions during the movement, and the height of the outer end face at different positions relative to the pin hole is different, the difference between the maximum and minimum values ​​of the measuring part reading is the verticality of the pin hole relative to the outer end face. The above detection process is convenient, fast, and efficient, which greatly improves the detection efficiency and can realize the detection of the verticality of the piston pin hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The structures, proportions, sizes, etc. depicted in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which the utility model can be implemented, and therefore have no substantive technical significance.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 Utility Model Figure 1 Enlarged view of point B in the middle;

[0019] Figure 3 Utility Model Figure 1 A in the middle is an enlarged view.

[0020] Legend:

[0021] 10. Bottom plate; 11. Concave frame; 12. Moving slide; 13. Slider; 14. Dial indicator; 15. Driving motor; 16. Driving screw; 17. Mounting block; 18. Electric telescopic rod 1; 19. Mounting seat; 20. T-shaped slide; 21. T-shaped slide; 22. Support rod; 23. Clamping block; 24. Electric telescopic rod 2. DETAILED DESCRIPTION

[0022] The structures, proportions, sizes, etc. illustrated in this specification are intended solely to complement the contents disclosed herein and to facilitate understanding and reading by persons skilled in the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in size, provided they do not affect the efficacy and objectives of the present invention, shall remain within the scope of the technical contents disclosed herein.

[0023] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0024] In the description of the embodiments of the present invention, it should be noted that the terms "center," "upper," "lower," "inner," "outer," and "side" and the like indicate positions or location relationships based on the positions or location relationships shown in the accompanying drawings, or the positions or location relationships in which the product of the present invention is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on the specific circumstances.

[0026] A piston pin hole measuring device, such as Figure 1-3 As shown, it includes a base plate body 10, a concave frame 11 is fixedly installed on the top wall of the base plate body 10, a movable slide groove 12 is opened on the top wall of the concave frame 11, a slider 13 is arranged in the movable slide groove 12, and a dial indicator 14 for measuring the piston pin hole is fixedly installed on the bottom end wall of the slider 13, and a driving mechanism for moving the slider 13 is provided on the right outer wall of the concave frame 11. The driving mechanism includes a driving motor 15 and a driving screw 16. The front and rear top walls of the base plate body 10 are respectively fixedly installed with mounting blocks 17, and the opposite walls of the two mounting blocks 17 are fixedly installed with electric telescopic rods 18. The ends of the two electric telescopic rods 18 close to each other are respectively provided with a clamping mechanism for clamping the piston, and the clamping mechanism includes two mounting seats 19, two T-shaped slides, two support rods 22 and two clamping blocks 23. The driving motor 15 is fixedly mounted on the right outer wall of the concave frame 11. The right end of the driving screw 16 passes through the concave frame 11 and is fixedly sleeved on the left output end of the driving motor 15. The left end of the driving screw 16 is movably sleeved on the left inner wall of the movable slide 12. A threaded hole running through the left and right side walls is provided on the slider 13 and the threaded hole is threadedly connected to the driving screw 16. The bottom wall of the slider 13 is fixedly connected to the electric telescopic rod 24, and the bottom output end of the electric telescopic rod 24 is fixedly connected to the dial indicator 14. The two mounting seats 19 are respectively fixedly mounted on the output ends of the two electric telescopic rods 18. The two mounting seats 19 are close to each other. The walls are respectively provided with T-shaped slides. The two T-shaped slides are respectively slidably arranged in the corresponding two T-shaped slides. The two support rods 22 are respectively fixedly mounted on the end wall surface of the two T-shaped slides away from each other. The ends of the two support rods 22 close to each other are respectively fixedly mounted on the end wall surface of the corresponding two clamping blocks 23 away from each other.

[0027] The working principle of the utility model is as follows: when in use, the piston is placed between the two clamping blocks 23, and the two electric telescopic rods 18 are started to drive the two support rods 22 and the two clamping blocks 23 to move in opposite directions, and finally the two clamping blocks 23 clamp and fix the piston. When it is necessary to fix pistons of different sizes, the two T-shaped slides 21 are slid out upwards to further replace the clamping blocks 23 that are adapted to the size of the piston. The operation is simple and practical.

[0028] During use, after the piston is fixed, start the electric telescopic rod 24 so that the measuring head of the measuring part of the dial indicator 14 is pressed appropriately on the outer end face of the piston pin hole, turn on the drive motor 15, and drive the screw 16 through the transmission shaft to drive the slider 13 and the dial indicator 14 to move horizontally. During the movement, ensure that the measuring head of the measuring part is in full contact with the outer end face of the pin hole, and record the maximum and minimum values ​​of the measuring part readings. Since the measuring head contacts the outer end face at different positions during the movement, and the heights of the outer end faces at different positions relative to the pin hole are different, the difference between the maximum and minimum values ​​of the measuring part readings is the verticality of the pin hole relative to the outer end face. The above detection process is convenient, fast, and efficient, which greatly improves the detection efficiency and can realize the detection of the verticality of the piston pin hole.

[0029] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements shall fall within the scope of the present invention as claimed.

Claims

1. A piston pin hole measuring device, comprising a base plate body (10), characterized in that: The top wall of the base plate body (10) is fixedly mounted with a concave frame (11), the top wall of the concave frame (11) is provided with a movable slide groove (12), a slider (13) is arranged in the movable slide groove (12), the bottom wall of the slider (13) is provided with a dial indicator (14) for measuring the piston pin hole, the right outer wall of the concave frame (11) is provided with a driving mechanism for moving the slider (13), the driving mechanism includes a driving motor (15) and a driving screw (16), the front and rear top walls of the base plate body (10) are respectively fixedly mounted with mounting blocks (17), the opposite walls of the two mounting blocks (17) are fixedly mounted with electric telescopic rods (18), the ends of the two electric telescopic rods (18) close to each other are respectively provided with a clamping mechanism for clamping the piston, the clamping mechanism includes two mounting seats (19), two T-shaped slides (21), two support rods (22) and two clamping blocks (23).

2. The piston pin hole measuring device according to claim 1, characterized in that: The driving motor (15) is fixedly mounted on the right outer wall of the concave frame (11); the right end of the driving screw (16) passes through the concave frame (11) and is fixedly sleeved on the left output end of the driving motor (15); and the left end of the driving screw (16) is movably sleeved on the left inner wall of the movable chute (12).

3. The piston pin hole measuring device according to claim 1, characterized in that: The slider (13) is provided with threaded holes penetrating the left and right side walls, and the threaded holes are threadedly connected to the driving screw (16).

4. The piston pin hole measuring device according to claim 1, characterized in that: The bottom wall of the slider (13) is fixedly connected to the second electric telescopic rod (24), and the bottom output end of the second electric telescopic rod (24) is fixedly connected to the dial indicator (14).

5. The piston pin hole measuring device according to claim 1, characterized in that: The two mounting seats (19) are respectively fixedly mounted on the output ends of the two electric telescopic rods (18), and the walls of the two mounting seats (19) close to each other are respectively provided with T-shaped sliding grooves (20).

6. The piston pin hole measuring device according to claim 1, characterized in that: The two T-shaped slide plates (21) are respectively slidably arranged in the corresponding two T-shaped slide grooves (20), and the two support rods (22) are respectively fixedly mounted on the end walls of the two T-shaped slide plates (21) that are away from each other.

7. The piston pin hole measuring device according to claim 1, characterized in that: The ends of the two support rods (22) that are close to each other are fixedly mounted on the wall surfaces of the ends of the corresponding two clamping blocks (23) that are away from each other.

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