Oil hole depth gauge

Abstract

The utility model discloses an oil hole depth gauge which comprises a depth measuring rod, the depth measuring rod comprises a non-metering section and a metering section, and the boundary of the non-metering section and the metering section is provided with a 0 scale line; the depth measuring device further comprises a measuring sliding block, a through sliding hole is formed in the measuring sliding block, and the measuring sliding block is slidably connected to the depth measuring rod in a sleeving mode through the sliding hole. The end face, located at one end of the sliding hole, of the measuring sliding block is a workpiece hole end face binding face, the end face, located at the other end of the sliding hole, of the measuring sliding block is provided with a depth lower limit indicating face, and the distance between the depth lower limit indicating face and the workpiece hole end face binding face is equal to the length of the non-metering section. A depth upper limit indicating surface is also arranged on the end surface of the other end of the sliding hole on the measuring sliding block; and the depth upper limit indicating surface and the depth lower limit indicating surface are arranged in parallel. According to the oil hole depth gauge provided by the utility model, the height difference value between the depth upper limit indicating surface and the depth lower limit indicating surface of the measuring slide block is the allowable depth tolerance value of the oil hole to be measured, so that accurate reading is facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle technology and relates to inspection tools, specifically an oil hole depth inspection tool. Background Technology

[0002] With the continuous development of technology, the development of intelligent new products is becoming increasingly vigorous, and most of these new products involve hydraulic control. To achieve hydraulic control, corresponding oil circuits need to be designed. Many oil circuits replace commonly used oil pipes by machining deep and long oil holes in housing parts. If the depth of the oil holes in the parts is not up to standard, it may directly lead to the product's inability to achieve its functions.

[0003] Intelligent products such as CVT, power shift, and ECVT utilize hydraulic control and point-to-point lubrication for some functions. The oil circuits typically employ a combination of external pipes and internal oil passages (oil holes). Major housing parts of these products require numerous oil holes for control or lubrication. Inaccurate control of the oil passage depth can lead to product malfunction or inadequate lubrication, resulting in serious quality issues. Therefore, accurate measurement of the oil passage depth during manufacturing is crucial. Commonly used calipers and depth gauges are insufficient for accurate and effective measurement. Due to the presence of the drill tip, measuring the oil hole with the tail end of a vernier caliper may introduce significant errors, while depth gauges cannot reach into the oil hole for effective measurement. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, this utility model proposes an oil hole depth gauge to solve the technical problem that the existing gauges cannot accurately detect the oil hole depth of parts.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] An oil hole depth gauge includes a depth measuring bar, which comprises a non-measuring section and a measuring section, with a 0-scale line provided at the boundary between the non-measuring section and the measuring section; it also includes a measuring slider, which has a through-hole, and the measuring slider is slidably fitted onto the depth measuring bar through the through-hole.

[0007] The end face of the measuring slider located at one end of the sliding hole is the workpiece hole end face contact surface, and the end face of the measuring slider located at the other end of the sliding hole is provided with a depth lower limit indicator surface. The distance between the depth lower limit indicator surface and the workpiece hole end face contact surface is equal to the length of the non-measuring section.

[0008] The measuring slider is also provided with a depth upper limit indicator surface on the end face located at the other end of the sliding hole, and the depth upper limit indicator surface is arranged parallel to the depth lower limit indicator surface.

[0009] This utility model also has the following technical features:

[0010] The measuring slider is also provided with a locking screw hole, which is connected to the sliding hole. A locking bolt is installed in the locking screw hole, which can lock the depth measuring bar.

[0011] The height difference between the upper depth indicator surface and the lower depth indicator surface is the allowable depth tolerance value of the oil hole to be tested.

[0012] A process groove is formed radially at a position where the lower depth indicator surface is close to the upper depth indicator surface.

[0013] The outer diameter of the non-metering section is equal to the inner diameter of the oil hole to be measured; the ends of the non-metering section are flush.

[0014] The end of the metering section is equipped with a detachable handle.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects:

[0016] (I) The oil hole depth gauge proposed in this utility model has a sliding fit between the measuring slider and the depth measuring bar with a small gap. This ensures that when the contact surface of the workpiece hole end face of the measuring slider is in contact with the workpiece hole end face, the axis of the depth measuring bar is coincident with the axis of the oil hole to be measured, avoiding tilting and improving the accuracy of measurement. The height difference between the upper limit indicator surface and the lower limit indicator surface of the measuring slider is the allowable tolerance value of the depth of the oil hole to be measured, which facilitates accurate reading.

[0017] (II) The oil hole depth gauge proposed in this utility model has a distance between the lower limit indicator surface of the measuring slider and the contact surface of the workpiece hole end face, which is equal to the length of the non-measuring section of the depth measuring bar. The more the measuring slider slides upward, the larger the displayed measurement value.

[0018] (III) The oil hole depth gauge proposed in this utility model has a non-measuring section of the depth measuring bar with the end flush, which ensures that the end face of the depth measuring bar does not enter the cone angle part of the oil hole to be measured, thus reducing measurement error. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the cross-sectional structure of the oil hole depth gauge.

[0020] Figure 2 This is a schematic diagram of the depth gauge.

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the measuring slider.

[0022] Figure 4 This is a schematic diagram of the structure of the oil hole depth gauge during operation.

[0023] Figure 5This is an enlarged structural diagram of oil hole depth gauge I.

[0024] Figure 6 This is an enlarged schematic diagram of point II when measuring the oil hole depth with a gauge.

[0025] The meanings of the labels in the figure are as follows: 1-depth gauge bar, 2-measuring slider, 3-oil hole to be measured, 4-process groove, 5-handle, 6-workpiece hole end face, 7-workpiece.

[0026] 101 - Non-metering section, 102 - Metering section.

[0027] 201-Sliding hole, 202-Workpiece hole end face mating surface, 203-Lower depth indicator surface, 204-Upper depth indicator surface, 205-Locking screw hole, 206-Locking bolt.

[0028] The specific content of this utility model will be further explained in detail below with reference to the embodiments. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, all equipment and components in this utility model are based on equipment and components known in the prior art.

[0030] Following the above technical solution, the following are specific embodiments of this utility model. It should be noted that this utility model is not limited to the following specific embodiments, and all equivalent modifications made based on the technical solution of this application fall within the protection scope of this utility model.

[0031] Example:

[0032] This embodiment provides an oil hole depth gauge, including a depth measuring rod 1, as shown below. Figure 1 , Figure 2 and Figure 3 As shown, the depth measuring bar 1 includes a non-measuring section 101 and a measuring section 102, and a 0-scale line is provided at the boundary between the non-measuring section 101 and the measuring section 102; characterized in that it also includes a measuring slider 2, which has a through sliding hole 201, and the measuring slider 2 is slidably sleeved on the depth measuring bar 1 through the sliding hole 201.

[0033] like Figure 1 and Figure 3 As shown, the end face of the measuring slider 2 located at one end of the sliding hole 201 is the workpiece hole end face contact surface 202. The end face of the measuring slider 2 located at the other end of the sliding hole 201 is provided with a depth lower limit indicator surface 203. The distance between the depth lower limit indicator surface 203 and the workpiece hole end face contact surface 202 is equal to the length of the non-measuring section 101.

[0034] like Figure 1 and Figure 3As shown, a depth upper limit indicator surface 204 is also provided on the end face of the measuring slider 2 located at the other end of the sliding hole 201. The depth upper limit indicator surface 204 is arranged parallel to the depth lower limit indicator surface 203.

[0035] As a preferred embodiment of this invention, such as Figure 1 and Figure 3 As shown, the measuring slider 2 is also provided with a locking screw hole 205, which is connected to the sliding hole 201. A locking bolt 206 is installed in the locking screw hole 205, which can lock the depth measuring bar 1.

[0036] In this embodiment, the height difference between the upper depth indicator surface 204 and the lower depth indicator surface 203 is the allowable depth tolerance value of the oil hole 3 to be tested.

[0037] As a preferred embodiment of this invention, such as Figure 1 , Figure 3 and Figure 5 As shown, a process groove 4 is radially formed on the lower depth indicator surface 203, which is close to the upper depth indicator surface 204.

[0038] As a preferred embodiment of this invention, such as Figure 4 and Figure 6 As shown, the outer diameter of the non-metering section 101 is equal to the inner diameter of the oil hole 3 to be measured; the ends of the non-metering section 101 are flush.

[0039] As a preferred embodiment of this invention, such as Figure 1 and Figure 4 As shown, a detachable handle 5 is installed at the end of the metering section 102.

[0040] In this embodiment, the preferred height difference between the upper depth limit indicator surface 204 and the lower depth limit indicator surface 203 is 1 mm.

[0041] In this embodiment, a locking bolt 206 is installed in the locking screw hole 205 to fix the measuring slider 2 on the depth measuring rod 1 for easy reading.

[0042] In this embodiment, the working process of the oil hole depth gauge is specifically divided into the following steps:

[0043] Step 1: Confirm the diameter of the oil hole 3 to be measured and the depth of the oil hole 3 required by the drawing. Select a depth gauge 1 with an outer diameter that is the same as the inner diameter of the oil hole 3 to be measured.

[0044] Step 2: Clean the oil hole 3 to be tested to ensure that there are no foreign objects inside the oil hole 3;

[0045] Step 3: Insert the depth measuring bar 1 into the oil hole 3 to be measured through the handle 3, ensuring that the end face of the non-measuring section 101 of the depth measuring bar 1 is in contact with the bottom end of the oil hole 3 to be measured.

[0046] Step 4: Slide the measuring slider 2 of the gauge to the end face 6 of the workpiece hole, ensuring that the end face 6 of the workpiece hole is in close contact with the contact surface 202 of the end face of the workpiece hole of the measuring slider 2, and tighten the locking bolt 206 to fix the measuring slider 2 on the depth measuring bar 1.

[0047] Step 5: Determine whether the nominal depth value of the oil hole 3 to be tested is within the range of the scale value on the depth measuring bar 1 between the lower depth limit indicator surface 203 and the upper depth limit indicator surface 204. If it is within the range, it means that the oil hole 3 to be tested meets the design requirements. If it is not within the range, it means that the oil hole 3 to be tested does not meet the design requirements. In addition, the scale value of the lower depth limit indicator surface 203 on the depth measuring bar 1 is the true depth value of the oil hole 3 to be tested.

[0048] Step 6: Remove the gauge from the oil hole 3 of workpiece 7 to be tested. The test is now complete.

Claims

1. An oil hole depth gauge, comprising a depth gauge stick (1), the depth gauge stick (1) comprising a non-gauge section (101) and a gauge section (102), a 0 scale line being provided at the boundary between the non-gauge section (101) and the gauge section (102); characterized in that, Also include the measuring slider (2), the measuring slider (2) is provided with through sliding hole (201), the measuring slider (2) is slidably sleeved on the depth gauge rod (1) through the sliding hole (201); The end face of the measuring slider (2) at one end of the sliding hole (201) is a workpiece hole end face fitting surface (202), and the end face of the measuring slider (2) at the other end of the sliding hole (201) is provided with a depth lower limit indicating surface (203), the distance between the depth lower limit indicating surface (203) and the workpiece hole end face fitting surface (202) is equal to the length of the non-measuring section (101); The end face of the measuring slider (2) at the other end of the sliding hole (201) is also provided with a depth upper limit indicating surface (204), and the depth upper limit indicating surface (204) is parallel to the depth lower limit indicating surface (203).

2. The oil hole depth gauge of claim 1, wherein, The measuring slider (2) is also provided with a locking screw hole (205), the locking screw hole (205) is communicated with the sliding hole (201), and the locking screw hole (205) is provided with a locking bolt (206), and the locking bolt (206) can lock the depth gauge rod (1).

3. The oil hole depth gauge of claim 1, wherein, The height difference between the depth upper limit indicating surface (204) and the depth lower limit indicating surface (203) is the depth allowable tolerance value of the oil hole (3) to be measured.

4. The oil hole depth gauge of claim 1 wherein, The position of the depth lower limit indicating surface (203) close to the depth upper limit indicating surface (204) is provided with a process groove (4) along the radial direction.

5. The oil hole depth gauge of claim 1 wherein, The outer diameter of the non-measuring section (101) is equal to the inner diameter of the oil hole (3) to be measured, and the end of the non-measuring section (101) is flush.

6. The oil hole depth gauge of claim 1 wherein, The end of the measuring section (102) is provided with a detachable handle (5).

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