Detection tool for measuring inner diameter of differential shell product

Abstract

The utility model discloses a detection tool for measuring the inner diameter of a differential shell product, which relates to the technical field of differential shell detection equipment and comprises a bracket, a workpiece support for placing a workpiece is fixedly arranged on the upper end surface of the bracket, a limiting boss is arranged on the workpiece support, and a detection hole is formed in the workpiece support; the bottom of the support is fixedly provided with a detection seat which is suspended, and the upper end is fixedly connected with the support through a plurality of supporting legs. The detection seat is provided with a sliding groove, and a sliding seat is slidably connected in the sliding groove. A detection frame is fixedly arranged at the top of the sliding seat, the detection frame is L-shaped, a detection probe is clamped at the end part of the detection frame, and the detection probe penetrates through the bracket and is positioned in the detection hole; one end of the detection seat is fixedly provided with a dial indicator, and a transmission rod of the dial indicator is fixedly connected with the sliding seat. Therefore, according to the utility model, the sliding seat is arranged in the sliding chute, and the sliding seat and the detection frame are utilized, so that the cost is reduced, the operation steps are simplified, and meanwhile, the differential shell type workpieces can be rapidly detected.

Description

Technical Field

[0001] The utility model relates to the technical field of differential shell detection equipment, in particular to an inner diameter measuring tool for differential shell products. Background Art

[0002] The gearbox differential housing, referred to as the differential case, is an important and indispensable part in automobile power transmission. Since the planetary gear set will be installed in the differential case, if the installation accuracy is not enough, the gearbox will make abnormal noises. Therefore, the factory accuracy requirements for the differential case are relatively high.

[0003] In the prior art, in order to detect the surface defects of the differential housing, there is a patent application document with a publication number of CN210268544U, and the patent name is a differential housing inner diameter detection device. In the device, by setting features such as a bracket and a fixing plate on a workbench, an infrared rangefinder is used to achieve accurate detection of the inner diameter of the differential housing. The equipment is relatively expensive, inconvenient to maintain, and not very practical. Detection errors are prone to occur in the runout value of the inner end face diameter of the differential housing. Utility Model Content

[0004] In order to overcome the above-mentioned defects, the purpose of the utility model is to provide a differential shell product inner diameter measuring gauge, which can realize rapid detection of differential shell workpieces while reducing costs and simplifying operating steps.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a differential shell product inner diameter measuring fixture, including a bracket, the upper end surface of the bracket is fixedly provided with a workpiece support for placing a workpiece, the workpiece support is provided with a limiting boss, and a detection hole is opened on the workpiece support; a detection seat is fixedly provided at the bottom of the bracket, the detection seat is suspended, and the upper end is fixedly connected to the bracket by a plurality of legs; a slide groove is provided on the detection seat, and a slide seat is slidably connected in the slide groove; a detection frame is fixedly provided on the top of the slide seat, and the detection frame is L-shaped, and a detection probe is clamped at the end of the detection frame, and the detection probe penetrates the bracket and is located in the detection hole; a micrometer is also fixedly provided at one end of the detection seat, and a transmission rod of the micrometer is fixedly connected to the slide seat.

[0006] Preferably, the slide includes a first slide and a second slide, a first detection frame is provided on the top of the first slide, and a second detection frame is provided on the upper end of the second slide; a first detection probe is clamped at the end of the first detection frame, and a second detection probe is clamped at the end of the second detection frame, and the first detection probe and the second detection probe are located on the same straight line.

[0007] Preferably, a sleeve is fixedly provided between the first slide seat and the second slide seat, a connecting rod is provided in the sleeve, and the transmission rods in the first detection frame and the second detection frame are connected to the same micrometer.

[0008] Preferably, the first slide seat and the second slide seat share a slide groove, and the slide groove passes through the detection frame.

[0009] Preferably, the detection probe is columnar, and the contact surface between the detection probe and the detection workpiece is smaller than the surface to be detected of the workpiece.

[0010] Preferably, the limiting boss is circular, the diameter of the limiting boss is adapted to the workpiece to be inspected, and the distance between the first inspection probe and the second inspection probe in the inspection hole is adapted to the diameter of the workpiece surface to be inspected.

[0011] Preferably, a positioning support column is also provided in the middle of the workpiece support.

[0012] Preferably, the workpiece support is circular as a whole, and the parts located at the two detection holes are planes, and the distance between the two planes is smaller than the diameter of the workpiece support.

[0013] After adopting the above technical solution, the beneficial technical effects achieved by the utility model are:

[0014] 1. Since a workpiece support is provided for placing the workpiece to be inspected, the same type of differential shell products can be directly placed on the workpiece support, and then the detection frame in the slide can be used to detect the inner and outer diameters of the differential shell products. In the above process, the slide and detection seat that constitute the measuring fixture are standard parts, so the installation error is certain. After the installation is completed, it is only necessary to observe the runout of the micrometer to determine whether the product meets the factory requirements. Therefore, the operation is simpler and suitable for the detection of large quantities of products.

[0015] 2. Since the transmission rods in the first inspection frame and the second inspection frame are connected to the same micrometer, in the process of detecting the diameter, the run-out value measured by the first inspection frame or the second inspection frame can be directly transmitted to the same micrometer. In this way, the product is tested for qualification by measuring the run-out of the diameter, which will have higher detection efficiency and be more helpful in judging whether the design requirements are met. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a reference schematic diagram of the use state of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure after the workpiece to be inspected is hidden;

[0018] Figure 3 This is a reference diagram of the bottom usage status after some parts are hidden;

[0019] Figure 4 It is a schematic diagram of the structure of the detection frame;

[0020] Figure 5 yes Figure 4 A front view of

[0021] In the figure, 1, bracket; 11, workpiece support; 111, limiting boss; 112, positioning support column; 12, detection hole;

[0022] 2. Detection rack; 21. First detection rack; 22. Second detection rack; 23. Detection probe;

[0023] 3. Detection seat; 31. Slide groove; 32. First slide seat; 33. Second slide seat; 34. Sleeve;

[0024] 4. Micrometer;

[0025] 5. Workpiece to be inspected. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0027] See also Figure 1-Figure 5The utility model provides a measuring tool for the inner diameter of a differential shell product, including a bracket 1, the upper end surface of the bracket 1 is fixedly provided with a workpiece support 11 for placing a workpiece, the workpiece support 11 is provided with a limiting boss 111, and a detection hole 12 is opened on the workpiece support 11; when in use, the workpiece 5 to be detected is placed on the workpiece support 11, and the limiting boss 111 contacts the inner end surface of the workpiece 5 to be detected, and generally a positioning support column 112 is also provided in the middle of the workpiece support 11. A detection seat 3 is fixedly provided at the bottom of the bracket 1, and the detection seat 3 is suspended, and the upper end is fixedly connected to the bracket 1 through a plurality of legs; the bottom of the detection seat 3 does not touch the ground, and a slide groove 31 is provided on the detection seat 3, and a slide seat is slidably connected in the slide groove 31; the slide groove 31 is used to limit the slide seat to ensure that the slide seat can only reciprocate in one direction. The slide is fixedly connected to the detection frame 2, which is L-shaped. The end of the detection frame 2 is clamped with a detection probe 23, and the detection probe 23 penetrates the bracket 1 and is located in the detection hole 12; when a groove or protrusion appears on the end face of the workpiece 5 to be detected, it will touch the detection frame 2, and the detection frame 2 drives the slide below to move. The slide is connected to the transmission rod of the micrometer 4, and the runout value is transmitted to the micrometer 4. By observing the runout of the micrometer 4, it is judged whether the workpiece 5 to be detected is qualified. Generally, the two sides of the limit boss 111 will be symmetrically provided with openings and processed into planes, so that it can be ensured that when measuring the circular runout, it is not affected by the arc boss, and it can be ensured that the detection probe 23 is in full contact with the surface to be detected of the workpiece. In actual use, one side of the end face of the detection probe 23 also needs to be milled to reduce the area and ensure that the contact surface of the entire detection probe 23 is smaller than the end face to be detected, so that the workpiece 5 to be detected will not produce measurement errors during the rotation process.

[0028] The slide of the utility model includes a first slide 32 and a second slide 33. The top of the first slide 32 is provided with a first detection frame 21, and the upper end of the second slide 33 is provided with a second detection frame 22; the end of the first detection frame 21 clamps a first detection probe 23, and the end of the second detection frame 22 clamps a second detection probe 23, and the first detection probe 23 and the second detection probe 23 are located on the same straight line. The workpiece 5 to be detected is generally a housing of a differential, which is circular. The first detection probe 23 and the second detection probe 23 are respectively located on the circular end face of the end face of the workpiece 5 to be detected, so as to detect the end face circular runout value of the entire diameter.

[0029] A sleeve 34 is fixedly arranged between the first slide 32 and the second slide 33 of the utility model, and a connecting rod is arranged inside the sleeve 34. The transmission rods in the first detection frame 21 and the second detection frame 22 are connected to the same micrometer 4. The slide 31 passes through the detection frame 2, and the diameter of the slide 31 must exceed the diameter of the end face of the workpiece 5 to be detected. The number of the micrometer 4 is generally one, and the first detection frame 21 and the second detection frame 22 directly transmit the runout value to the same micrometer 4. A sleeve 34 is arranged between the first slide 32 and the second slide 33, and the sleeve 34 is used for guiding. The transmission rod in the second slide 33 is connected to the micrometer 4 through the middle of the sleeve 34, and the movement does not interfere with each other.

[0030] The detection probe 23 of the utility model is cylindrical, and the contact surface between the detection probe 23 and the detection workpiece is smaller than the surface to be detected of the workpiece. The detection probe 23 is in direct contact with the detection end surface of the workpiece, and the inner diameter height of the differential shell is small. In order to ensure the position accuracy during contact, the lower part of the detection probe 23 will be milled into a plane, which is not only easier to position, but also ensures that the contact surface of the detection probe 23 is in full contact with the detection end surface of the workpiece.

[0031] The limiting boss 111 of the utility model is circular, and the diameter of the limiting boss 111 is adapted to the workpiece 5 to be detected, and the distance between the first detection probe 23 and the second detection probe 23 in the detection hole 12 is adapted to the diameter of the surface of the workpiece to be detected. The distance between the first detection probe 23 and the second detection probe 23 is the distance of the detection diameter.

[0032] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field can make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A measuring tool for the inner diameter of a differential shell product, characterized in that: It comprises a bracket, the upper end surface of which is fixedly provided with a workpiece support for placing the workpiece, the workpiece support is provided with a limiting boss, and a detection hole is opened on the workpiece support; A detection seat is fixedly provided at the bottom of the bracket, the detection seat is suspended in the air, and the upper end is fixedly connected to the bracket through a plurality of legs; The detection seat is provided with a slide groove, and a slide seat is slidably connected in the slide groove; A detection frame is fixedly provided on the top of the slide seat, the detection frame is L-shaped, a detection probe is clamped at the end of the detection frame, and the detection probe penetrates the bracket and is located in the detection hole; A dial gauge is also fixedly arranged at one end of the detection seat, and a transmission rod of the dial gauge is fixedly connected to the slide seat.

2. The inner diameter measuring fixture for differential shell products according to claim 1, characterized in that: The slide includes a first slide and a second slide, a first detection frame is provided on the top of the first slide, and a second detection frame is provided on the upper end of the second slide; a first detection probe is clamped at the end of the first detection frame, and a second detection probe is clamped at the end of the second detection frame, and the first detection probe and the second detection probe are located on the same straight line.

3. The inner diameter measuring jig for differential shell products according to claim 2, characterized in that: A sleeve is fixedly arranged between the first slide seat and the second slide seat, a connecting rod is arranged in the sleeve, and the transmission rods in the first detection frame and the second detection frame are connected to the same micrometer.

4. The inner diameter measuring fixture for differential shell products according to claim 2, characterized in that: The first slide seat and the second slide seat share a slide groove, and the slide groove passes through the detection frame.

5. The inner diameter measuring jig for differential shell products according to claim 1, characterized in that: The detection probe is columnar, and the contact surface between the detection probe and the detection workpiece is smaller than the surface to be detected of the workpiece.

6. The inner diameter measuring tool for differential shell products according to claim 2, characterized in that: The limiting boss is circular, the diameter of the limiting boss is adapted to the workpiece to be detected, and the distance between the first detection probe and the second detection probe in the detection hole is adapted to the diameter of the surface of the workpiece to be detected.

7. The inner diameter measuring tool for differential shell products according to claim 1 is characterized in that: A positioning support column is also provided in the middle of the workpiece support.

8. The inner diameter measuring jig for differential shell products according to claim 1, characterized in that: The workpiece support is circular as a whole, and the parts located at the two detection holes are planes, and the distance between the two planes is smaller than the diameter of the workpiece support.

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