Transmission housing hole depth measuring tool

Abstract

Provided is a transmission housing hole depth measuring tool. Comprising a horizontally-arranged base, a supporting plate supported on the base, measuring assemblies which are in one-to-one correspondence with bearing holes in a transmission shell and are installed on the supporting plate in the vertical direction, dial indicators which are installed on the supporting plate and are in one-to-one correspondence with the measuring assemblies, and a reference seat which is arranged in the base and is vertically aligned with the measuring assemblies. The depth of the top surface of the reference seat in the base is equal to the standard hole depth of a corresponding bearing hole in the transmission shell. The device is characterized in that the measuring assembly comprises a main shaft which is movably arranged on the supporting plate and extends into the base, a measuring disc which is detachably arranged at the lower end of the main shaft, and a spring which is sleeved on the main shaft; the spring is compressed between the reference seat and the supporting plate along with the supporting of the measuring disc on the reference seat, and the detection end of the dial indicator contacts with the upper end face of the main shaft. According to the utility model, the convenience of measurement operation and the accuracy of measurement are improved, the synchronous measurement of the hole depths of a plurality of bearing holes is realized, and the measurement efficiency and the practicability are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a transmission housing hole depth measuring tool for measuring the bearing hole depth on the transmission housing. BACKGROUND

[0002] The transmission comprises an input shaft, an intermediate shaft and an output shaft, the three shafts are parallel, each shaft is supported on the housing through a bearing, a bearing hole (also known as a bearing chamber) is generally formed on the housing, the bearing assembled at the shaft end is pressed into the bearing hole, and a pre-tightening gasket with a corresponding thickness needs to be added in the bearing hole to adjust the pre-tightening amount of the bearing, the selection of the gasket thickness generally adopts a graded gasket selection method to obtain a matched pre-tightening gasket, when the gasket is selected, the depth value from the housing joint surface of one end of the transmission to the bottom surface of the bearing hole, i.e. the bearing mounting hole depth, and the height value from the housing joint surface of the other end of the transmission to the end surface of the bearing, i.e. the bearing height, need to be measured; the bearing mounting hole depth is subtracted from the bearing height to obtain the thickness of the matched pre-tightening gasket, the traditional bearing hole depth measurement method is to use a measuring rod or a dial gauge to measure, but the measurement is greatly affected by human factors, the measurement efficiency is low, and the measurement accuracy is not high, this method has been gradually eliminated, in order to improve the measurement accuracy, a measurement tool with a standard block and a dial gauge is used to measure the hole depth in the prior art, for example, in the patent document CN202321241800.3, the measurement zero point of the measuring head is adjusted to the standard hole depth of the bearing hole through the standard block, the error between the actual hole depth and the standard hole depth is obtained through the reading of the dial gauge during measurement, and thus the actual hole depth is obtained, but this measurement tool can only measure one hole depth at a time, the measurement efficiency is not high, the movement of the measuring head will impact the positioning pin and the dial gauge, the measurement accuracy is affected, the dial gauge needs to be clamped and the measuring head needs to be dragged during movement, and the assembly convenience of the measurement tool is affected. SUMMARY

[0003] The transmission housing hole depth measuring tool provided by the utility model improves the convenience of measurement operation and the accuracy of measurement, realizes the synchronous measurement of multiple bearing hole depths, and improves the measurement efficiency and practicality.

[0004] To achieve the above object, the utility model adopts the technical scheme of:

[0005] The gear box hole depth measuring tool comprises a horizontal base, a support plate supported on the base, a measuring assembly vertically arranged on the support plate and corresponding to the bearing holes on the gear box, a dial gauge corresponding to the measuring assembly and supported on the support plate, and a reference seat arranged in the base and vertically aligned with the measuring assembly, wherein the depth of the top surface of the reference seat in the base is the standard hole depth of the corresponding bearing hole on the gear box.

[0006] Preferably, a guide seat is fixed on the support plate and guided with the main shaft, the main shaft penetrates the guide seat, and the spring is compressed between the guide seat and the measuring disc.

[0007] Preferably, the guide seat is in T shape and penetrates the support plate, the main shaft is provided with a waist-shaped adjusting hole in the vertical direction, the guide seat is provided with a pin hole corresponding to the waist-shaped adjusting hole, and a connecting pin penetrates the pin hole and the waist-shaped adjusting hole.

[0008] Preferably, the main shaft is provided with a split pin, and the split pin is located above the guide seat.

[0009] Preferably, a table seat is fixed on the support plate and close to the guide seat, the table seat is in L shape, and the dial gauge is inserted into the table seat in a guided manner.

[0010] The gear box hole depth measuring tool has the following advantages:

[0011] This utility model discloses a tooling for measuring the hole depth of a transmission housing. The top surface of the reference base is recessed into the base to the standard hole depth of the corresponding bearing hole on the transmission housing. During zeroing, a support plate supports the base, and the measuring disc is supported on the reference base. The spring seat is compressed as the measuring disc is supported, and the upper end face of the spindle contacts the probe end of the dial indicator. The dial indicator reading is then adjusted to zero. After zeroing, the support plate is placed on the mating surface of the transmission housing, and the measuring disc is inserted into the corresponding bearing hole. The spring pushes the measuring disc against the bottom surface of the bearing hole. Because the spindle is movably mounted on the support plate, when there is an error between the measured hole depth and the standard hole depth, the spindle will be slightly adjusted relative to the support plate. The dial indicator reading at this time is the error value between the measured hole depth and the standard hole depth. The hole depth is obtained by adding the dial indicator reading to the hole depth. A spring buffers the movement of the spindle on the support plate and presses the measuring disc firmly against the reference seat or the bottom surface of the bearing hole, creating a pre-tightening effect on the measuring disc. This prevents the spindle from impacting the dial indicator and the connection between the spindle and the support plate, while ensuring effective contact of the measuring disc, thus improving the convenience and accuracy of the measurement operation. Multiple measuring components are installed on the support plate, each measuring a bearing hole, enabling simultaneous measurement of the depth of multiple bearing holes. The spindle and measuring disc are detachably connected, and the reference seat is placed on the base. Different spindles, measuring discs, and reference seats can be replaced according to the depth and diameter of the bearing holes to achieve the measurement of different bearing holes, improving measurement efficiency and practicality. Attached Figure Description

[0012] Fig. 1 This is a schematic diagram of the tooling for measuring the hole depth of the transmission housing according to this utility model.

[0013] Fig. 2 A schematic diagram of the combination of the spindle and the measuring disk. Detailed Implementation

[0014] The following is combined Figs. 1-2 The embodiments of this utility model will be described in detail below.

[0015] A tooling for measuring the hole depth of a transmission housing includes a horizontally arranged base 1, a support plate 2 supported on the base 1, a measuring component 3 corresponding one-to-one with the bearing holes on the transmission housing and mounted vertically on the support plate 2, a dial indicator 4 mounted on the support plate 2 and corresponding one-to-one with the measuring component 3, and a reference seat 5 placed in the base 1 and vertically aligned with the measuring component 3. The depth of the top surface of the reference seat 5 in the base 1 is the standard hole depth of the corresponding bearing hole on the transmission housing. The measuring component 3 includes a movable spindle 6 mounted on the support plate 2 and extending into the base 1, a detachable measuring disk 7 mounted on the lower end of the spindle 6, and a spring 8 sleeved on the spindle 6. The spring 8 is compressed between the reference seat 5 and the support plate 2 as the measuring disk 7 is supported on the reference seat 5. The probe end of the dial indicator 4 is in contact with the upper end face of the spindle 6.

[0016] The depth measuring tool for the transmission housing hole has the following advantages: the depth of the top surface of the reference seat 5 in the base 1 is the standard hole depth of the corresponding bearing hole on the transmission housing; when the zero is calibrated, the support plate 2 supports the base 1, the measuring disc 7 is supported on the reference seat 5, the spring 8 is compressed when the measuring disc 7 is supported, the upper end surface of the main shaft 6 is in contact with the probe end of the dial gauge 4, at this time, the dial gauge reading is adjusted to zero, after the zero is adjusted, the support plate 2 is supported on the housing surface of the transmission housing, and the measuring disc 7 is inserted into the corresponding bearing hole, the spring 8 pushes the measuring disc 7 to abut against the bottom surface of the bearing hole, because the main shaft 6 is movably arranged on the support plate 2, when there is an error between the measured hole depth and the standard hole depth, the main shaft 6 is slightly adjusted relative to the support plate 2, at this time, the reading of the dial gauge is the error value between the measured hole depth and the standard hole depth, the standard hole depth is added to the reading of the dial gauge, and the measured hole depth is obtained; the spring 8 buffers the movement of the main shaft 6 on the support plate, and the measuring disc 7 is pressed against the reference seat 5 or the bottom surface of the bearing hole, thereby forming the pre-tightening of the measuring disc, which prevents the impact of the main shaft 6 on the dial gauge 4 and the connecting member between the main shaft 6 and the support plate 2, and ensures the effective abutting contact of the measuring disc 7, thereby improving the convenience of the measuring operation and the accuracy of the measurement; the support plate 2 is provided with a plurality of measuring assemblies 3, each measuring assembly 3 measures one bearing hole, and the hole depths of the plurality of bearing holes are synchronously measured; the main shaft 6 and the measuring disc 7 are detachably connected, the reference seat 5 is arranged on the base 1, different main shafts 6, measuring discs 7 and reference seats 5 can be replaced according to the depth and diameter of the bearing hole, so that the measurement of different bearing holes is realized, and the measurement efficiency and practicability are improved.

[0017] The support plate 2 is fixed with a guide seat 21 which is guided with the main shaft 6, the main shaft 6 penetrates the guide seat 21, and the spring 8 is compressed between the guide seat 21 and the measuring disc 7. The guide seat 21 guides the main shaft 6, prevents the main shaft 6 from tilting, and improves the accuracy of the measurement. The spring 8 is clamped between the guide seat 21 and the measuring disc 7, buffers the movement of the main shaft 6, and pushes the measuring disc 7 to be pressed against the reference seat 5 or the bottom surface of the bearing hole.

[0018] The guide seat 21 is in the shape of T and penetrates the support plate 2, a waist-shaped adjusting hole 61 is formed in the main shaft 6 in the vertical direction, a pin hole corresponding to the waist-shaped adjusting hole 61 is formed in the guide seat 21, and a connecting pin penetrates the pin hole and the waist-shaped adjusting hole 61. The connecting pin forms the movable connection between the guide seat 21 and the main shaft 6, and the waist-shaped adjusting hole 61 moves relative to the connecting pin to slightly adjust the position of the main shaft 6 on the guide seat 21 during the measurement.

[0019] The open pin 9 is inserted into the main shaft 6 and is located above the guide seat 21. When the measuring disc 7 is suspended, the spring 8 is elongated to push the measuring disc 6 to move downward, and at this time, the open pin 9 is abutted against the guide seat 21 to hang the measuring assembly 3 on the guide seat 21, and the open pin 9 bears the weight of the measuring assembly 3, avoiding that the connecting pin in the waist-shaped adjusting hole 6 bears the weight of the measuring assembly 3 when the measuring disc 7 is suspended, preventing the connecting pin from being deformed, and improving the accuracy of measurement.

[0020] The support plate 2 is fixed with the table seat 10 close to the guide seat 21, the table seat 10 is L-shaped, and the dial gauge 4 is inserted into the table seat 10 in a guided mode. Since the movement of the main shaft 6 is buffered by the spring 8, the impact of the main shaft 6 on the dial gauge is avoided, so that the dial gauge 4 only needs to be inserted into the table seat 10 in a guided mode to be vertically arranged, without needing to be clamped, improving the convenience of arrangement of the dial gauge 4, and improving the assembly convenience of the measuring tool.

[0021] The technical scheme of the embodiment of the utility model is completely described in combination with the drawings, and it should be noted that the described embodiment is only a part of the embodiment of the utility model. Based on the embodiment of the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

Claims

1. A transmission housing bore depth measuring tool, comprising a horizontally disposed base, a support plate supported on the base, a measuring assembly corresponding to each bearing hole on the transmission housing and vertically mounted on the support plate, a dial gauge mounted on the support plate and corresponding to each measuring assembly, a reference seat disposed in the base and vertically aligned with the measuring assembly, the top surface of the reference seat being at a depth in the base corresponding to the standard bore depth of the corresponding bearing hole on the transmission housing, characterized in that: The measuring assembly comprises a movable main shaft installed on the support plate and extending into the base, a detachable measuring disc installed on the lower end of the main shaft, and a spring sleeved on the main shaft, which is compressed between the reference base and the support plate when the measuring disc is supported on the reference base.

2. The transmission case bore depth measuring tool of claim 1, wherein: The support plate is fixed with a guide base matched with the main shaft, the main shaft penetrates the guide base, and the spring is compressed between the guide base and the measuring disc.

3. The transmission case bore depth measuring tool of claim 2, wherein: The guide base is in T shape and penetrates the support plate, the main shaft is provided with a waist-shaped adjusting hole in the vertical direction, the guide base is provided with a pin hole corresponding to the waist-shaped adjusting hole, and a connecting pin penetrates the pin hole and the waist-shaped adjusting hole.

4. The transmission case bore depth measuring tool of claim 3, wherein: The main shaft is provided with an open pin, which is located above the guide base.

5. The transmission case bore depth measuring tool of claim 2, wherein: The support plate is fixed with a table base close to the guide base, the table base is in L shape, and the dial gauge is inserted into the table base in a guided manner.

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