A device for detecting the inner and outer diameters of automotive engine pulleys

Abstract

This utility model relates to the technical field of testing devices, and particularly to a device for measuring the inner and outer diameters of automotive engine pulleys. It includes a worktable, a first pneumatic measuring head mounted on the worktable for placing the pulley and measuring its inner diameter, and a second pneumatic measuring head slidably connected to the worktable for measuring the pulley's outer diameter. This testing device can accurately detect the inner and outer diameters of pulleys, and has high testing efficiency.

Description

Technical Field

[0001] This invention relates to the technical field of testing devices, and particularly to a device for testing the inner and outer diameters of automotive engine pulleys. Background Technology

[0002] After the production of automotive engine pulleys is completed, their inner and outer diameters need to be inspected. Existing technology uses calipers for measurement, but this method often results in significant errors due to different gripping techniques by the inspectors. Another existing technology uses pneumatic gauges for measurement, but usually two pneumatic gauges are needed to measure the inner and outer diameters respectively. This requires the user to first place the pneumatic gauges in the measurement position and then take the measurement, and it needs to be done twice, so the overall measurement efficiency is low. Utility Model Content

[0003] The technical solution to be solved by this utility model is: to provide a device for detecting the inner and outer diameters of an automobile engine pulley. This device can accurately detect the inner and outer diameters of the pulley and has high detection efficiency.

[0004] The technical solution adopted by this utility model is: a device for detecting the inner and outer diameters of an automobile engine pulley, which includes a worktable, a first pneumatic measuring head set on the worktable for placing the pulley and measuring the inner diameter of the pulley, and a second pneumatic measuring head slidably connected to the worktable for measuring the outer diameter of the pulley.

[0005] Preferably, the first pneumatic measuring head is cylindrical, and the size of the cylinder matches the inner diameter of the pulley to be measured. The front of the second pneumatic measuring head has a groove for the pulley to be measured to extend into, and the size of the groove matches the outer diameter of the pulley to be measured.

[0006] Preferably, the worktable is provided with a through hole, the diameter of which is smaller than the diameter of the first pneumatic measuring head and matches the diameter of the air inlet of the first pneumatic measuring head. The air inlet of the first pneumatic measuring head extends into the through hole and is locked by a locking member, thereby fixing the first pneumatic measuring head on the worktable.

[0007] Preferably, the first pneumatic measuring head is provided with parallel baffles on both sides, and a groove is formed between the two baffles, and the second pneumatic measuring head is slidably connected in the groove.

[0008] Preferably, the workbench is provided with support feet at its four corners.

[0009] Compared with the prior art, the present invention has the following advantages by adopting the above structure: the two pneumatic measuring heads are directly set on the worktable, so that the pulley only needs to be placed on the first pneumatic measuring head, and then the second pneumatic measuring head is slid to a suitable position to complete the measurement of the inner and outer diameters of the pulley. This not only has high measurement accuracy, but also high measurement efficiency.

[0010] The first pneumatic measuring head with this mounting structure can measure the inner diameter of the pulley very well, and it is also relatively easy to install and fix.

[0011] The second pneumatic measuring head with this mounting structure can conveniently measure the outer diameter of the pulley.

[0012] The four support feet allow the worktable to be raised, facilitating air intake for the first pneumatic measuring instrument's measuring head. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a device for detecting the inner and outer diameters of an automotive engine pulley.

[0014] Figure 2 This is a schematic diagram of a device for detecting the inner and outer diameters of an automotive engine pulley, including the pulley itself.

[0015] Figure 3 This is a schematic diagram of the measuring head of the first pneumatic measuring instrument.

[0016] Figure 4 This is a schematic diagram of the measuring head of the second pneumatic measuring instrument.

[0017] Figure 5 This is a structural diagram of the workbench.

[0018] As shown in the figure: 1. Workbench; 2. First pneumatic measuring head; 3. Second pneumatic measuring head; 4. Groove; 5. Through hole; 6. Air inlet; 7. Baffle; 8. Slide groove; 9. Support foot; 10. Pulley. Detailed Implementation

[0019] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0020] Example 1:

[0021] A device for detecting the inner and outer diameters of an automotive engine pulley includes a worktable 1, a first pneumatic measuring head 2, and a second pneumatic measuring head 3, wherein:

[0022] The workbench 1 has support feet 9 at its four corners for raising the workbench 1, and a through hole 5 in its middle for mounting the first pneumatic measuring head 2. The workbench 1 also has two parallel baffles 7, and a groove 8 is formed between the two baffles 7 for mounting the second pneumatic measuring head 3.

[0023] The first pneumatic measuring head 2 includes a main body and an air inlet head 6. The main body is cylindrical, and the size of the cylinder is close to the inner diameter of the pulley 10. This makes it easy for the pulley 10 to be fitted onto the cylindrical main body of the first pneumatic measuring head 2. The lower end is connected to the air inlet head 6, which extends into the through hole 5. The air inlet head 6 is threaded on its circumference. It can be threaded onto the air inlet head 6 through a locking device, thereby fixing the first pneumatic measuring head 2 onto the worktable 1.

[0024] The second pneumatic measuring head 3 also includes a main body and an air inlet head 6. The main body is close to U-shaped, and its head is provided with a groove 4. The size of the groove 4 is close to the outer diameter of the pulley 10. This allows the groove 4 of the second pneumatic measuring head 3 to cover the pulley 10. The second pneumatic measuring head 3 is slidably connected in the slide groove 8, so that the position of the second pneumatic measuring head 3 can be adjusted as needed.

[0025] Furthermore, both the first pneumatic measuring head 2 and the second pneumatic measuring head 3 need to be connected to the air source through pipelines. That is, the two pneumatic measuring instruments are roughly the same as the existing pneumatic measuring instruments in terms of composition and working principle. The only difference is that the measuring head is different in order to match the measuring pulley 10, so it is not elaborated here.

[0026] The working principle of this embodiment is as follows: First, the pulley 10 is placed on the cylindrical body of the first pneumatic measuring head 2. Because the two are sized to match, the pulley 10 is just fitted onto the cylindrical body of the first pneumatic measuring head 2. Then, the second pneumatic measuring head 3 is controlled to slide in the groove 8. The position of the second pneumatic measuring head 3 is adjusted. After adjustment, the inner and outer diameters of the pulley 10 can be measured simultaneously. After the measurement is completed, the pulley 10 can be removed to complete the measurement of the inner and outer diameters of the pulley 10.

[0027] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0028] For those skilled in the art, various changes and modifications will undoubtedly be apparent after reading the above description. Therefore, the appended claims should be considered as covering all changes and modifications that encompass the true intent and scope of this utility model. Any and all equivalent scope and content within the scope of the claims should be considered as still falling within the intent and scope of this utility model.

Claims

1. A device for detecting the inner and outer diameters of an automotive engine pulley, characterized in that: It includes a worktable (1), a first pneumatic measuring head (2) set on the worktable (1) for placing the pulley (10) and measuring the inner diameter of the pulley (10), and a second pneumatic measuring head (3) slidably connected to the worktable (1) for measuring the outer diameter of the pulley (10).

2. The device for detecting the inner and outer diameters of an automotive engine pulley according to claim 1, characterized in that: The first pneumatic measuring head (2) is cylindrical, and the size of the cylinder matches the inner diameter of the pulley (10) to be measured. The second pneumatic measuring head (3) has a groove (4) at the front for the pulley (10) to be measured to extend into, and the size of the groove (4) matches the outer diameter of the pulley (10) to be measured.

3. The device for detecting the inner and outer diameters of an automotive engine pulley according to claim 2, characterized in that: The workbench (1) is provided with a through hole (5). The diameter of the through hole (5) is smaller than the diameter of the first pneumatic measuring head (2) and matches the diameter of the air inlet (6) of the first pneumatic measuring head (2). The air inlet (6) of the first pneumatic measuring head (2) extends into the through hole (5) and is locked by a locking member, thereby fixing the first pneumatic measuring head (2) on the workbench (1).

4. The device for detecting the inner and outer diameters of an automotive engine pulley according to claim 3, characterized in that: The first pneumatic measuring head (2) has parallel baffles (7) on both sides, and a groove (8) is formed between the two baffles (7). The second pneumatic measuring head (3) is slidably connected in the groove (8).

5. The device for detecting the inner and outer diameters of an automotive engine pulley according to claim 1, characterized in that: The workbench (1) is provided with support feet (9) at its four corners.

Images