Piston pin hole detection device

Abstract

The utility model provides a piston pin hole detection device which comprises a base, the upper surface of the base is slidably connected with a fixing plate through a guide assembly, the surface of the fixing plate is fixedly connected with a fastening layer through a clamping plate, a transmission groove is formed in the base, and the middle of the transmission groove is movably connected with a transmission wheel through a bearing. Guide grooves are symmetrically formed in the two sides of the interior of the transmission groove, guide plates are slidably connected into the guide grooves, meanwhile, a movable plate is slidably connected into the transmission groove through the guide plates, the side face of the movable plate is meshed with a transmission wheel through a tooth groove, one end of the transmission groove is fixedly connected with a servo electric cylinder, and a telescopic rod of the servo electric cylinder is fixedly connected with the movable plate; one end of the upper surface of the moving plate is fixedly connected with a push plate. According to the utility model, through cooperation of the servo electric cylinder, the moving plate, the transmission wheel, the push plate, the fixed plate, the clamping plate and the fastening layer, the device can stably clamp and fix a piston main body before a piston pin hole is detected, and the detection effect of the pin hole is ensured.

Description

Technical Field

[0001] This utility model relates to the field of piston pin hole detection technology, and specifically to a piston pin hole detection device. Background Technology

[0002] The pin holes on engine pistons require high precision machining, necessitating accurate positioning before boring. For larger pistons, positioning can be achieved using the piston's inner center hole, employing an angular positioning method with an internal pin hole seat to ensure angular accuracy. However, for smaller pistons, it's impossible to install an orientation mechanism within the piston cavity. Therefore, precision testing of the piston pin holes is necessary after piston production. Existing pin hole testing devices typically use a clamping and fixing structure to position and hold the piston, preventing pin hole displacement during testing. However, the clamping and fixing structure of existing devices can cause uneven force on the piston, leading to displacement during positioning and affecting subsequent pin hole testing efficiency. Furthermore, existing positioning fixtures are usually made of hard materials; excessive clamping can damage the piston surface, reducing piston quality and even rendering the entire piston unusable. Utility Model Content

[0003] To overcome the shortcomings of the existing technology, a piston pin hole detection device is provided to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, a piston pin hole detection device is provided, comprising: a base, a piston body placed in the middle of the upper surface of the base, a fixed plate slidably connected to the upper surface of the base via a guide assembly, a fastening layer fixedly connected to the surface of the fixed plate via a clamping plate, a transmission groove opened inside the base, a transmission wheel movably connected to the middle of the transmission groove via a bearing, guide grooves symmetrically opened on both sides inside the transmission groove, a guide plate slidably connected in the guide groove, a moving plate slidably connected in the transmission groove via the guide plate, the side of the moving plate meshing with the transmission wheel via a toothed groove, a servo cylinder fixedly connected to one end of the transmission groove, a telescopic rod of the servo cylinder fixedly connected to the moving plate, a push plate fixedly connected to one end of the upper surface of the moving plate, and the upper end of the push plate passing through the main sliding groove opened in the base and fixedly connected to the fixed plate.

[0005] Preferably, the transmission groove inside the base has a rectangular structure, the two ends of the transmission groove are connected to the end faces of the two ends of the base, and a set of main sliding grooves are respectively opened at the two ends of the top of the transmission groove. Both sets of main sliding grooves have a rectangular structure and are centrally symmetrically distributed.

[0006] Preferably, the two sets of guide grooves symmetrically opened at the bottom of the transmission groove are both elongated structures, and the dimensions of the guide groove and the guide plate are matched. The length of the guide groove is equal to the length of the transmission groove, and the cross-section formed by the combination of the guide groove and the transmission groove is Π-shaped.

[0007] Preferably, the movable plate has a long strip structure, the thickness of the movable plate is adapted to the height of the transmission groove, and multiple sets of tooth grooves are evenly opened on the side of the movable plate near the transmission wheel, while two sets of movable plates are symmetrically distributed on both sides of the transmission wheel.

[0008] Preferably, a push plate is fixedly connected to the end of the upper surface of the movable plate away from the transmission wheel. The push plate has a rectangular structure and the size of the push plate is adapted to the main slide groove. Meanwhile, the marking area opened in the middle of the upper surface of the base has a circular structure, and the positioning block fixedly connected in the middle of the marking area has a cylindrical structure.

[0009] Preferably, the guide assembly consists of a vertical plate and guide rods, and the guide assembly as a whole has a U-shaped structure, the guide rods have a cylindrical structure, the vertical plate has a rectangular structure, and the two ends of the fixing plate are slidably connected to the guide rods in the two sets of guide assemblies through guide holes.

[0010] Preferably, the clamping plate fixedly connected to the surface of the fixing plate has a U-shaped structure, and a reinforcing block is fixedly connected at the corner of the inner side of the clamping plate. The reinforcing block has a right-angled triangular prism structure, and the fastening layer fixedly connected at the opening of the clamping plate has a long strip structure. Multiple sets of adsorption holes are evenly opened on the surface of the fastening layer away from the clamping plate, and the adsorption holes have a cylindrical structure.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: through the cooperation of the servo electric cylinder, moving plate, transmission wheel, push plate, fixed plate, clamping plate and fastening layer, the two sides of the piston body can be evenly stressed, thereby effectively reducing the probability of accidental displacement of the piston body when it is clamped and fixed, ensuring the efficiency of subsequent pin hole inspection, and also effectively reducing the probability of accidental movement of the piston body during pin hole inspection. It can also help reduce the damage to the surface of the piston body caused by the clamping and fixing required for pin hole inspection, ensuring the quality of the piston body and improving the yield of the piston body. Attached Figure Description

[0012] Figure 1 This is a front view schematic diagram of an embodiment of the present utility model.

[0013] Figure 2 This is a side view of an embodiment of the present utility model.

[0014] Figure 3 This is a top view of an embodiment of the present utility model.

[0015] Figure 4 This is an embodiment of the present utility model. Figure 2 Enlarged diagram of point A.

[0016] In the diagram: 1. Base; 2. Moving plate; 3. Guide plate; 4. Transmission wheel; 5. Transmission groove; 6. Piston body; 7. Marking area; 8. Fastening layer; 9. Fixing plate; 10. Clamping plate; 11. Guide assembly; 12. Push plate; 13. Reinforcing block; 14. Main slide groove; 15. Servo electric cylinder. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Reference Figures 1 to 4 As shown, this utility model provides a piston pin hole detection device, including: a base 1, a piston body 6 placed in the middle of the upper surface of the base 1, a fixed plate 9 slidably connected to the upper surface of the base 1 through a guide assembly 11, a fastening layer 8 fixedly connected to the surface of the fixed plate 9 through a clamping plate 10, a transmission groove 5 opened inside the base 1, a transmission wheel 4 movably connected to the middle of the transmission groove 5 through a bearing, and guide grooves symmetrically opened on both sides inside the transmission groove 5, a guide plate 3 slidably connected in the guide groove, and a moving plate 2 slidably connected in the transmission groove 5 through the guide plate 3, the side of the moving plate 2 meshing with the transmission wheel 4 through a toothed groove, a servo electric cylinder 15 fixedly connected to one end of the transmission groove 5, the telescopic rod of the servo electric cylinder 15 fixedly connected to the moving plate 2, a push plate 12 fixedly connected to one end of the upper surface of the moving plate 2, and the upper end of the push plate 12 passing through the main sliding groove 14 opened in the base 1 and fixedly connected to the fixed plate 9.

[0019] In this embodiment, the piston body 6 is placed in the marking area 7 on the upper surface of the base 1, and the positioning block of the marking area 7 can be embedded in the inner cavity of the piston body 6, thereby assisting the piston body 6 in initial positioning, which is convenient for subsequent clamping and fixing. When the switch of the servo cylinder 15 is turned on, the telescopic rod of the servo cylinder 15 pushes the corresponding fixedly connected moving plate 2 to move. The moving plate 2 can drive another moving plate 2 to move in the opposite direction synchronously through the meshing transmission wheel 4. Therefore, the two moving plates 2 can push the two fixed plates 9 to move in the opposite direction synchronously through the push plate 12, so that the clamping plate 10 on the surface of the fixed plate 9 can clamp and fix the outer side of the piston body 6 through the fastening layer 8, thereby effectively enhancing the fixing effect of the piston body 6. This makes it convenient for workers to use the detection tool (not shown in the figure) to perform corresponding detection on the pin hole of the piston body 6, avoiding problems such as position displacement of the piston body 6 during the detection process, and ensuring the accuracy and efficiency of the pin hole detection.

[0020] In a preferred embodiment, the transmission groove 5 inside the base 1 has a rectangular structure. The two ends of the transmission groove 5 are connected to the end faces of the two ends of the base 1. A set of main slide grooves 14 are respectively opened at the two ends of the top of the transmission groove 5. Both sets of main slide grooves 14 have a rectangular structure and are centrally symmetrically distributed.

[0021] In this embodiment, as Figure 1 , Figure 2 and Figure 3 The opening of the transmission groove 5 allows the moving plate 2 and the transmission wheel 4 to be connected in a relatively enclosed environment, thereby helping to reduce the probability of transmission failure in the device. The opening of the main slide groove 14 can help enhance the stability of the push plate 12 when it moves. The piston pin hole detection tool can be fixedly connected to the side of the base 1 by buckles or bolts.

[0022] In a preferred embodiment, the two sets of guide grooves symmetrically opened at the bottom of the transmission groove 5 are both elongated structures, and the dimensions of the guide grooves and the guide plate 3 are matched. The length of the guide grooves is equal to the length of the transmission groove 5, and the cross-section formed by the combination of the guide grooves and the transmission groove 5 is Π-shaped.

[0023] In this embodiment, as Figure 1 and Figure 2 The guide groove and guide plate 3 are matched in size, which helps to enhance the stability of the guide plate 3 and the moving plate 2 when they move in the transmission groove 5, and avoids the problem of the moving plate 2 accidentally deviating or bending during the movement.

[0024] As a preferred embodiment, the movable plate 2 has a long strip structure, the thickness of the movable plate 2 is adapted to the height of the transmission groove 5, and multiple sets of tooth grooves are evenly opened on the side of the movable plate 2 near the transmission wheel 4, while the two sets of movable plates 2 are symmetrically distributed on both sides of the transmission wheel 4.

[0025] In this embodiment, as Figure 1 , Figure 2 and Figure 3 The dimensions of the moving plate 2 and the transmission groove 5 are matched, which helps to enhance the stability of the moving plate 2 when it moves and prevents the moving plate 2 from shaking. Since the sides of the two sets of moving plates 2 are connected to the transmission wheel 4 through the corresponding toothed grooves, the two sets of moving plates 2 can move synchronously in opposite directions through the connected transmission wheel 4.

[0026] In a preferred embodiment, a push plate 12 is fixedly connected to the end of the upper surface of the movable plate 2 away from the transmission wheel 4. The push plate 12 has a rectangular structure and the size of the push plate 12 and the main slide groove 14 are compatible. Meanwhile, the marking area 7 opened in the middle of the upper surface of the base 1 has a circular structure, and the positioning block fixedly connected in the middle of the marking area 7 has a cylindrical structure.

[0027] In this embodiment, as Figure 1 and Figure 3 The marking area 7 allows workers to place the piston body 6 in a suitable area on the surface of the base 1 for initial positioning. The positioning block effectively prevents the piston body 6 from accidentally deviating from the marking area 7, which facilitates the clamping and fixing effect of the clamping plate 10 and the fastening layer 8 on the piston body 6.

[0028] In a preferred embodiment, the guide assembly 11 consists of a vertical plate and a guide rod. The guide assembly 11 has a U-shaped structure, the guide rod has a cylindrical structure, and the vertical plate has a rectangular structure. At the same time, the two ends of the fixing plate 9 are slidably connected to the guide rods in the two sets of guide assemblies 11 through guide holes.

[0029] In this embodiment, as Figure 1 , Figure 3 and Figure 4 The guide component 11 helps to enhance the stability of the fixed plate 9 when it moves above the base 1, and can also effectively limit the movement path and range of the fixed plate 9. At the same time, the size of the guide rod and the guide hole are matched to effectively prevent the fixed plate 9 from shaking.

[0030] In a preferred embodiment, the clamping plate 10 fixedly connected to the surface of the fixing plate 9 has a U-shaped structure. A reinforcing block 13 is fixedly connected to the corner of the inner side of the clamping plate 10. The reinforcing block 13 has a right-angled triangular prism structure. The fastening layer 8 fixedly connected to the opening of the clamping plate 10 has a long strip structure. Multiple sets of adsorption holes are evenly opened on the surface of the fastening layer 8 away from the clamping plate 10. The adsorption holes have a cylindrical structure.

[0031] In this embodiment, as Figure 1 , Figure 2 and Figure 3 The reinforcement block 13 effectively reduces the chance of accidental bending at both ends of the clamping plate 10. The fastening layer 8 is made of silicone, which increases the contact area and limiting effect with the outer side of the piston body 6 through its own bending and stretching deformation. The adsorption hole helps to enhance the adsorption and fixing effect when the fastening layer 8 abuts against the outer side of the piston body 6, thereby enhancing the clamping and fixing effect of the clamping plate 10 on the piston body 6 through the fastening layer 8. It can also effectively reduce the chance of accidental damage to the outer side of the piston body 6 due to clamping and fixing, ensuring the quality of the piston body 6.

[0032] The piston pin hole detection device of this utility model, through the cooperation of servo electric cylinder 15, moving plate 2, transmission wheel 4, push plate 12, fixed plate 9, clamping plate 10 and fastening layer 8, enables the device to stably clamp and fix the piston body 6 before detecting the piston pin hole, ensuring the accuracy of the detection results during subsequent pin hole detection, and also effectively reducing the probability of damage to the surface structure of the piston body 6 due to the positioning and clamping structure during pin hole detection, thus ensuring the overall quality of the piston body 6.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A piston pin hole detection device, comprising: The base (1) has a piston body (6) placed in the middle of its upper surface. The base (1) is characterized in that: the upper surface of the base (1) is slidably connected to a fixed plate (9) through a guide assembly (11), and the surface of the fixed plate (9) is fixedly connected to a fastening layer (8) through a clamping plate (10). The base (1) has a transmission groove (5) inside, and the transmission groove (5) is movably connected to a transmission wheel (4) through a bearing in the middle. The transmission groove (5) has symmetrical guide grooves on both sides inside, and a guide plate (3) is slidably connected inside the guide groove. At the same time, a moving plate (2) is slidably connected to the transmission groove (5) through the guide plate (3). The side of the moving plate (2) meshes with the transmission wheel (4) through a tooth groove. One end of the transmission groove (5) is fixedly connected to a servo cylinder (15). The telescopic rod of the servo cylinder (15) is fixedly connected to the moving plate (2). One end of the upper surface of the moving plate (2) is fixedly connected to a push plate (12). The upper end of the push plate (12) passes through the main slide groove (14) opened in the base (1) and is fixedly connected to the fixed plate (9).

2. The piston pin hole detection device according to claim 1, characterized in that, The transmission groove (5) inside the base (1) has a rectangular structure. The two ends of the transmission groove (5) are connected to the end faces of the two ends of the base (1). A set of main slide grooves (14) are opened at the two ends of the top of the transmission groove (5). Both sets of main slide grooves (14) have a rectangular structure and are centrally symmetrically distributed.

3. The piston pin hole detection device according to claim 1, characterized in that, The two sets of guide grooves symmetrically opened at the bottom of the transmission groove (5) are both long strip structures. The dimensions of the guide groove and the guide plate (3) are matched, and the length of the guide groove is equal to the length of the transmission groove (5). The cross section formed by the combination of the guide groove and the transmission groove (5) is Π-shaped.

4. The piston pin hole detection device according to claim 1, characterized in that, The movable plate (2) has a long strip structure. The thickness of the movable plate (2) is matched with the height of the transmission groove (5). Multiple sets of tooth grooves are evenly opened on the side of the movable plate (2) near the transmission wheel (4). The two sets of movable plates (2) are symmetrically distributed on both sides of the transmission wheel (4).

5. The piston pin hole detection device according to claim 1, characterized in that, The upper surface of the movable plate (2) is fixedly connected to the end away from the transmission wheel (4) by a push plate (12). The push plate (12) has a rectangular structure and the size of the push plate (12) and the main slide (14) are compatible. Meanwhile, the marking area (7) opened in the middle of the upper surface of the base (1) has a circular structure, and the positioning block fixedly connected in the middle of the marking area (7) has a cylindrical structure.

6. The piston pin hole detection device according to claim 1, characterized in that, The guide assembly (11) consists of a vertical plate and a guide rod. The guide assembly (11) has a U-shaped structure, the guide rod has a cylindrical structure, and the vertical plate has a rectangular structure. At the same time, the two ends of the fixing plate (9) are slidably connected to the guide rods in the two sets of guide assemblies (11) through guide holes.

7. The piston pin hole detection device according to claim 1, characterized in that, The clamping plate (10) fixedly connected to the surface of the fixing plate (9) has a U-shaped structure. A reinforcing block (13) is fixedly connected at the corner of the inner side of the clamping plate (10). The reinforcing block (13) has a right-angled triangular prism structure. The fastening layer (8) fixedly connected to the opening of the clamping plate (10) has a long strip structure. Multiple sets of adsorption holes are evenly opened on the surface of the fastening layer (8) away from the clamping plate (10). The adsorption holes have a cylindrical structure.

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