Chamfer depth gauge

Abstract

The utility model relates to the technical field of testing fixture, specifically disclose a chamfer depth testing fixture, including fixed link, digital dial gauge, fixedly connected in the positioning block of fixed link bottom and the connecting rod of sliding setting in fixed link, the connecting rod bottom is fixedly connected with the probe, the probe sliding connection is in the positioning block, the fixed link is provided with the installation component that is limited to the up and down sliding of connecting rod, the installation component includes the jack and guide rod, the jack opens in the side of connecting rod, the guide rod is inserted in the jack, the top of fixed link is equipped with the through -hole for the cooperation connecting rod up and down sliding, the utility model discloses setting fixed link, sleeve, connecting rod, probe and installation component, through installation component to install and fix connecting rod to can be convenient for to the probe dismounts and replaces, when its damage or wear, only needs to replace the probe, does not need to scrap the whole testing fixture, reduces the cost.

Description

Technical Field

[0001] This utility model relates to the field of inspection tool technology, specifically a chamfer depth inspection tool. Background Technology

[0002] In the machining of crankshaft bores in the cylinder head of a 2.0L hybrid engine, the oil seal hole on one end face needs to be chamfered. Due to the easy wear of the original machining tools, the resulting chamfer dimensions were inconsistent, leading to oil seal leakage issues after final assembly. To control this risk, a dedicated chamfer depth gauge is now used for full inspection.

[0003] Existing gauges suffer from rapid wear of their measuring heads due to continuous contact with rough chamfered surfaces during frequent use. This directly leads to gauge inaccuracies, and because the structure is indivisible, the entire gauge must be replaced, resulting in high maintenance costs. To address these issues, a chamfer depth gauge is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a chamfer depth gauge to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A chamfering depth gauge includes a fixed rod, a digital dial indicator, a positioning block fixedly connected to the bottom of the fixed rod, and a connecting rod slidably disposed within the fixed rod. A probe is fixedly connected to the bottom of the connecting rod, and the probe is slidably connected within the positioning block. An installation assembly is provided within the fixed rod to limit the up-and-down sliding of the connecting rod.

[0007] The mounting assembly includes a socket and a guide rod. The socket is located on one side of the connecting rod, and the guide rod is inserted into the socket. The top of the fixing rod has a through hole for the connecting rod to slide up and down. Both sides of the inner wall of the through hole have guide grooves for the guide rod to move up and down. A spring is sleeved on the connecting rod. One end of the spring is connected to the connecting rod through a connector, and the end of the spring away from the connecting rod is fixedly connected to one side of the inner wall of the sleeve. The sleeve is connected to the top of the fixing rod through a connector.

[0008] A digital dial indicator is inserted into the top of the sleeve, and a positioning component for fixing the digital dial indicator is provided on the sleeve.

[0009] In one alternative: the connector includes a socket and a pin, the socket being formed on one side of the connecting rod, the pin being inserted into the socket, and one end of the spring being connected to the pin.

[0010] In one alternative: the connector includes a limiting ring and a fixing ring, the limiting ring being fixedly connected to the outer surface of the fixing rod, and the fixing ring being threadedly connected to the fixing rod and the sleeve.

[0011] In one alternative: the positioning component includes a positioning hole and a fixing hole, the positioning hole being formed on one side of the digital dial indicator, the fixing hole being formed on the sleeve, the digital dial indicator being inserted into the sleeve, and a set of positioning bolts being threadedly connected to the fixing hole and the positioning hole.

[0012] In one alternative embodiment: a pressure rod is slidably mounted on the digital dial indicator, the bottom of the pressure rod being located within a through hole, and the bottom of the pressure rod overlapping the top of the connecting rod.

[0013] In one alternative: the inner wall of the positioning block is provided with several sets of grooves.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model uses a fixed rod, sleeve, connecting rod, probe, and mounting assembly to install and fix the connecting rod, which facilitates the disassembly and replacement of the probe. When the probe is damaged or worn, only the probe needs to be replaced, without scrapping the entire fixture, thus reducing costs.

[0016] This utility model facilitates the connection and disassembly of the spring and the connecting rod by setting a connecting component. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the structure where the pressure rod is located in this utility model.

[0019] Figure 3 This is a schematic diagram of the structure where the sleeve is located in this utility model.

[0020] Figure 4 This is a schematic diagram of the structure where the spring is located in this utility model.

[0021] Figure 5 This is a structural diagram of the location of the guide rod in this utility model.

[0022] In the diagram: 11. Fixing rod; 12. Connecting rod; 13. Probe; 14. Positioning block; 15. Sleeve; 16. Positioning tube; 17. Digital dial indicator; 18. Pressure rod; 19. Guide groove; 20. Guide rod; 21. Insertion hole; 22. Spring; 23. Through hole; 24. Fixing ring; 25. Limiting ring; 26. Positioning hole; 27. Positioning bolt; 28. Fixing hole. Detailed Implementation

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] 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.

[0025] Please see Figures 1-5 In this embodiment, a chamfer depth gauge includes a fixed rod 11, a digital dial indicator 17, a positioning block 14 fixedly connected to the bottom of the fixed rod 11, and a connecting rod 12 slidably disposed within the fixed rod 11. A probe 13 is fixedly connected to the bottom of the connecting rod 12, and the probe 13 is slidably connected within the positioning block 14. An installation assembly is provided within the fixed rod 11 to limit the up-and-down sliding of the connecting rod 12.

[0026] The mounting assembly includes a socket 21 and a guide rod 20. The socket 21 is located on one side of the connecting rod 12, and the guide rod 20 is inserted into the socket 21. The top of the fixing rod 11 has a through hole 23 for the connecting rod 12 to slide up and down. Both sides of the inner wall of the through hole 23 have guide grooves 19 for the guide rod 20 to move up and down. A spring 22 is sleeved on the connecting rod 12. One end of the spring 22 is connected to the connecting rod 12 through a connector, and the end of the spring 22 away from the connecting rod 12 is fixedly connected to one side of the inner wall of the sleeve 15. The sleeve 15 is connected to the top of the fixing rod 11 through a connector. The replacement connecting rod 12 is inserted into the through hole 23 through the bottom of the positioning block 14, and the guide rod 20 is inserted into the insertion hole 21. The connector is used to install the connecting rod 12 and the spring 22. The guide rod 20 needs to pass through the insertion hole 21 of the connecting rod 12, and both ends are respectively inserted into the guide grooves 19 on both sides of the through hole 23. The sleeve 15 is placed on the top of the fixing rod 11, so that the bottom of the pressure rod 18 is inserted into the through hole 23 and contacts the top of the connecting rod 12. The connector is used to fix the fixing rod 11 and the sleeve 15, which facilitates the replacement of the probe 13. When it is damaged or worn, only the probe 13 needs to be replaced, without scrapping the entire fixture, thus reducing costs.

[0027] A digital dial indicator 17 is inserted into the top of the sleeve 15, and a positioning component for fixing the digital dial indicator 17 is provided on the sleeve 15.

[0028] The connector includes a socket and a pin. The socket is located on one side of the connecting rod 12, and the pin is inserted into the socket. One end of the spring 22 is connected to the pin. By providing the socket and the pin, it is easy to connect and disconnect the spring 22 and the connecting rod 12.

[0029] The connector includes a limiting ring 25 and a fixing ring 24. The limiting ring 25 is fixedly connected to the outer surface of the fixing rod 11, and the fixing ring 24 is threadedly connected to the fixing rod 11 and the sleeve 15. By setting the connector, the fixing rod 11 and the sleeve 15 can be connected, and the fixing rod 11 and the sleeve 15 can also be disassembled.

[0030] The positioning component includes a positioning hole 26 and a fixing hole 28. The positioning hole 26 is located on one side of the digital dial indicator 17, and the fixing hole 28 is located on the sleeve 15. The digital dial indicator 17 is inserted into the sleeve 15. A set of positioning bolts 27 are threaded into the fixing hole 28 and the positioning hole 26. The digital dial indicator 17 is inserted into the sleeve 15, and then the positioning bolts 27 are screwed into the corresponding fixing holes 28 and positioning holes 26 for fixation, which facilitates the installation and fixation of the digital dial indicator 17.

[0031] A pressure rod 18 is slidably mounted on the digital dial indicator 17. The bottom of the pressure rod 18 is located inside the through hole 23. The bottom of the pressure rod 18 overlaps with the top of the connecting rod 12. By setting the pressure rod 18, the connecting rod 12 can be pressed downward, thereby moving the probe 13 to complete the detection.

[0032] The downward pressure rod 18 causes the connecting rod 12 to move the probe 13 downward. The downward movement distance of the probe 13, i.e. the chamfer depth, is transmitted to the inside of the digital dial indicator 17 through the connecting rod 12, which pushes the mechanical structure to move. The displacement sensor converts it into an electrical signal, which is then processed and converted into a digital quantity, and finally displayed intuitively on the display screen. The detection of the digital dial indicator 17 is existing technology, and this application will not elaborate further.

[0033] The inner wall of the positioning block 14 is provided with several sets of grooves. By setting several sets of grooves, the friction between the probe 13 and the inner wall of the positioning block 14 can be reduced, and the smoothness of sliding can be improved.

[0034] The working principle of this utility model is as follows: In use, first, place the positioning block 14 on top of the crankshaft hole of the cylinder head of the hybrid engine block to be tested. Then, press down the pressure rod 18, which compresses the connecting rod 12. The connecting rod 12 drives the guide rod 20 to move downwards within the guide groove 19, and also stretches the spring 22. The spring 22 is sleeved on the connecting rod 12. When the connecting rod 12 slides, it causes the spring 22 to extend and retract along its own axis, preventing the spring 22 from bending due to radial force. The connecting rod 12 drives the probe 13 to slide downwards within the fixed rod 11 and the positioning block 14, closely inspecting the depth of the chamfer. After releasing the pressure rod 18, the spring 22 rebounds and pulls the connecting rod 12 back to its original position. This is convenient, quick, stable, and reliable. When replacing the probe 13, rotate the fixing ring 24 upwards to disengage it from the fixing rod 11. Then, move the sleeve 15 upwards to move the pressure rod 18 away from the connecting rod 12, thus releasing the spring 22. Disassemble the device, remove the pin, disengage it from the insertion hole on the connecting rod 12, push the connecting rod 12 upwards to pull the guide rod 20 out of the insertion hole 21, then pull the probe 13 out from the positioning block 14, causing the connecting rod 12 to disengage from the fixing rod 11 and the positioning block 14. Insert the replaced connecting rod 12 into the through hole 23 through the bottom of the positioning block 14, insert the guide rod 20 into the insertion hole 21, and then insert the pin into the insertion hole on the connecting rod 12 to install the spring 22. The insertion hole 21 of the connecting rod 12 is inserted through the tube 20, and both ends are respectively inserted into the guide grooves 19 on both sides of the through hole 23. The sleeve 15 is placed on the top of the fixing rod 11, so that the bottom of the pressure rod 18 is inserted into the through hole 23 and contacts the top of the connecting rod 12. Then, the fixing ring 24 is rotated downward so that the fixing ring 24 is screwed on the fixing rod 11 and the sleeve 15, which facilitates the replacement of the probe 13. When it is damaged or worn, only the probe 13 needs to be replaced, without scrapping the entire fixture, thus reducing costs.

[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A chamfer depth gauge, comprising a fixed rod (11), a digital dial indicator (17), a positioning block (14) fixedly connected to the bottom of the fixed rod (11), and a connecting rod (12) slidably disposed within the fixed rod (11), characterized in that: The bottom of the connecting rod (12) is fixedly connected to a probe (13), the probe (13) is slidably connected in the positioning block (14), and the fixing rod (11) is provided with an installation component to limit the up and down sliding of the connecting rod (12); The mounting assembly includes a socket (21) and a guide rod (20). The socket (21) is located on one side of the connecting rod (12). The guide rod (20) is inserted into the socket (21). The top of the fixing rod (11) is provided with a through hole (23) for the connecting rod (12) to slide up and down. Both sides of the inner wall of the through hole (23) are provided with guide grooves (19) for the guide rod (20) to move up and down. A spring (22) is sleeved on the connecting rod (12). One end of the spring (22) is connected to the connecting rod (12) through a connector. The end of the spring (22) away from the connecting rod (12) is fixedly connected to one side of the inner wall of the sleeve (15). The sleeve (15) is connected to the top of the fixing rod (11) through a connector. A digital dial indicator (17) is inserted into the top of the sleeve (15), and a positioning component for fixing the digital dial indicator (17) is provided on the sleeve (15).

2. A chamfer depth gauge according to claim 1, wherein: The connector includes a socket and a pin. The socket is located on one side of the connecting rod (12), and the pin is inserted into the socket. One end of the spring (22) is connected to the pin.

3. A chamfer depth gauge according to claim 1, wherein: The connector includes a limiting ring (25) and a fixing ring (24). The limiting ring (25) is fixedly connected to the outer surface of the fixing rod (11), and the fixing ring (24) is threadedly connected to the fixing rod (11) and the sleeve (15).

4. The chamfer depth gauge of claim 1, wherein: The positioning component includes a positioning hole (26) and a fixing hole (28). The positioning hole (26) is located on one side of the digital dial indicator (17), and the fixing hole (28) is located on the sleeve (15). The digital dial indicator (17) is inserted into the sleeve (15). A set of positioning bolts (27) are threaded into the fixing hole (28) and the positioning hole (26).

5. A chamfer depth gauge according to claim 4, characterized in that: A pressure rod (18) is slidably disposed on the digital dial indicator (17). The bottom of the pressure rod (18) is located inside the through hole (23), and the bottom of the pressure rod (18) overlaps with the top of the connecting rod (12).

6. A chamfer depth gauge according to claim 1, characterized in that: The inner wall of the positioning block (14) is provided with several sets of grooves.

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