Half axle gear inner hole and inner hole depth composite testing fixture

Abstract

The utility model relates to the technical field of gear processing, and particularly discloses a composite testing fixture for a half axle gear inner hole and inner hole depth, which comprises a boss, the boss is arranged in a workpiece inner hole, the bottom surface of the boss is contacted with the bottom surface of the inner hole, the top of the boss is provided with a mounting seat, the mounting seat is positioned above a workpiece, and the mounting seat is provided with a dial indicator. And the dial indicator is matched with the bottom surface of the boss to form a measuring structure for measuring the depth of the inner hole. According to the utility model, through mutual cooperation of the boss, the mounting seat, the dial indicator and the workpiece, effective depth detection of the passing ability of the inner hole and the bottom surface of the inner hole relative to the end surface of the inner hole can be completed at one time, and the efficiency of half axle gear inner hole and inner hole depth detection is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of gear processing technology, specifically to a composite gauge for the inner hole and inner hole depth of a half-shaft gear. Background Technology

[0002] In the field of gear machining, the machining of the inner hole and inner hole depth (i.e., the depth of the inner hole bottom surface relative to the inner hole end face) of half-shaft gears is usually done by measuring the inner hole diameter with an inner diameter gauge. However, due to the limitations of the product structure, the inner hole depth needs to be measured with a gauge block and a depth dimension. The depth dimension is then calculated based on the measured data. This method is inefficient and cannot be quantitatively detected online. It is prone to problems of batch deviations in stages, which can lead to batch scrapping of products.

[0003] Therefore, the applicant provides a composite gauge for the inner hole and inner hole depth of the half-shaft gear to solve the above problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a composite gauge for the inner hole and inner hole depth of a half-shaft gear.

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

[0006] A composite gauge for measuring the inner hole and depth of a half-shaft gear includes a boss placed in the inner hole of a workpiece, with the bottom surface of the boss in contact with the bottom surface of the inner hole. A mounting base is installed on the top of the boss, located above the workpiece. A dial indicator is installed on the mounting base, and the dial indicator cooperates with the bottom surface of the boss to form a measuring structure for measuring the inner hole depth.

[0007] Furthermore, the mounting base has a vertical hole, and the dial indicator rod is inserted into the vertical hole.

[0008] Furthermore, the mounting base is provided with a horizontal hole communicating with the vertical hole, and a fastening screw for locking the dial indicator rod is installed in the horizontal hole.

[0009] Furthermore, a handle is also installed on the mounting base.

[0010] Furthermore, the bottom surface of the mounting base does not contact the workpiece.

[0011] Furthermore, the bottom of the boss is hollow.

[0012] Furthermore, the axis of the boss, the axis of the mounting base, and the axis of the workpiece inner hole are all the same axis.

[0013] Compared with the prior art, this utility model provides a composite gauge for the inner hole and inner hole depth of a half-shaft gear, which has the following beneficial effects:

[0014] 1. This utility model, through the cooperation of the boss, mounting base, dial indicator and workpiece, can realize the detection of the inner hole passage and the effective depth of the inner hole bottom surface relative to the inner hole end face in one operation, effectively improving the efficiency of the inner hole and inner hole depth detection of the half shaft gear.

[0015] 2. This utility model can achieve quantitative measurement with high measurement efficiency;

[0016] 3. This utility model has a simple and reasonable structure, is easy to manufacture, and is convenient to operate;

[0017] 4. This utility model has low requirements for the measurement environment and is suitable for use on the production site. Attached Figure Description

[0018] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0019] Figure 2 This is a cross-sectional structural diagram of the workpiece of this utility model.

[0020] The markings in the diagram are: 1. Boss; 2. Mounting base; 3. Dial indicator; 31. Indicator rod; 32. Indicator head; 4. Workpiece; 5. Vertical hole; 6. Horizontal hole; 7. Fastening screw; 8. Handle. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0022] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0023] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0026] This utility model embodiment provides a composite gauge for the inner hole and inner hole depth of a half-shaft gear, referring to... Figure 1 and Figure 2 The device includes a boss 1, which is placed in the inner hole of the workpiece 4, and the bottom surface of the boss 1 is in contact with the bottom surface of the inner hole. A mounting base 2 is installed on the top of the boss 1, and the mounting base 2 is located above the workpiece 4. A dial indicator 3 is installed on the mounting base 2, and the dial indicator 3 cooperates with the bottom surface of the boss 1 to form a measuring structure for measuring the depth of the inner hole.

[0027] Specifically, workpiece 4 is the half-shaft gear; the depth of the bottom surface of the inner hole relative to the end face of the inner hole is the inner hole depth, denoted as "H" (refer to...). Figure 1 The bottom surface of the inner hole is the edge of the inner hole countersunk groove, and the bottom surface of the boss 1 can contact the edge of the inner hole countersunk groove. The dimensions of the boss 1 are designed according to the dimensions of the standard go gauge. The standard go gauge is designed for the inspection of inner hole dimensions, and it is set with a shaft that is slightly smaller than the minimum inner hole dimension. As long as this shaft can pass through the inner hole of the half-shaft gear, it can be guaranteed that the inner hole of the workpiece 4 being measured is larger than the dimension of this shaft, that is, the minimum inner hole dimension meets the tolerance requirements. The boss 1 has a convex structure, with both the upper and lower parts being cylindrical, and the diameter of the upper cylinder is smaller than the diameter of the lower cylinder, in order to avoid gaps (referring to the space in the mold). In the design, to simplify manufacturing, avoid unnecessary friction damage during mold use, and increase the sealing degree of the cavity, the two mating surfaces that were originally in close contact were artificially changed to non-contact surfaces, and also to reduce weight; the top of the boss 1 is connected to the mounting base 2; when installing the standard workpiece 4, the dial indicator 3's head 32 can contact the inner hole end face; the height measured by the dial indicator 3 is a relative height. After zeroing the dial indicator 3 with the standard half-shaft gear, the dial reading can be used to obtain the specific depth value, or you can directly check whether the + / - value displayed on the dial is within the tolerance range.

[0028] Among them, reference Figure 1 In this embodiment, a handle 8 is also installed on the mounting base 2.

[0029] Specifically, the handle 8 has a mesh-like knurled surface to increase friction, prevent slipping, and facilitate use by staff to pick up or place the mounting base 2.

[0030] Reference Figure 1 In this embodiment, the bottom surface of the mounting base 2 does not contact the workpiece 4 to avoid inaccurate measurement data.

[0031] Reference Figure 1 In this embodiment, the bottom of the boss 1 is hollow to reduce the weight of the boss 1, and the ring on the bottom surface of the boss 1 is in contact with the bottom surface of the inner hole.

[0032] Reference Figure 1 In this embodiment, the mounting base 2 has a vertical hole 5, and the dial indicator 3's stem 31 is inserted into the vertical hole 5.

[0033] Specifically, the dial indicator 3's head 32 extends into a vertical hole 5, meaning the dial indicator 3's head 32 protrudes from the bottom surface of the mounting base 2.

[0034] Reference Figure 1 In this embodiment, the mounting base 2 is provided with a horizontal hole 6 communicating with the vertical hole 5, and a fastening screw 7 for locking the dial indicator rod 31 is installed in the horizontal hole 6.

[0035] Specifically, the horizontal hole 6 is a threaded hole, and the fastening screw 7 is threadedly connected to the horizontal hole 6.

[0036] Reference Figure 1 In this embodiment, the axis of the boss 1, the axis of the mounting base 2, and the axis of the inner hole of the workpiece 4 are all the same axis, which makes the measurement results accurate.

[0037] In summary, during use, the boss 1 is inserted into the inner hole of the standard workpiece 4, so that the bottom surface of the boss 1 contacts the bottom surface of the inner hole. Then, the dial indicator 3's head 32 contacts the end face of the inner hole, and the dial indicator 3's stem 31 is locked with the fastening screw 7. The dial is rotated to zero. During measurement, the zeroed composite gauge is removed, the standard workpiece 4 is replaced with the workpiece to be measured, and the measurement is performed using the zeroed composite gauge. At this time, the value of the pointer of the dial indicator 4 deviating from zero is the error value of the workpiece. If the error is within the permissible range, it is a qualified product; otherwise, it is judged as a non-qualified product. This utility model can realize the detection of the inner hole passage and the effective depth of the inner hole bottom surface relative to the inner hole end face in one operation, effectively improving the efficiency of the detection of the inner hole and inner hole depth of the half-shaft gear.

[0038] This invention enables quantitative measurement with high efficiency.

[0039] This utility model has a simple and reasonable structure, is easy to manufacture, and is convenient to operate;

[0040] This invention has low requirements for the measurement environment and is suitable for use in production sites.

[0041] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0042] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A composite gauge for the inner hole and depth of a half-shaft gear, characterized in that, The device includes a boss (1) which is placed in the inner hole of the workpiece (4) and the bottom surface of the boss (1) is in contact with the bottom surface of the inner hole. A mounting base (2) is installed on the top of the boss (1) and the mounting base (2) is located above the workpiece (4). A dial indicator (3) is installed on the mounting base (2) and the dial indicator (3) cooperates with the bottom surface of the boss (1) to form a measuring structure for measuring the depth of the inner hole.

2. The composite gauge for the inner hole and inner hole depth of the half-shaft gear according to claim 1, characterized in that, The mounting base (2) has a vertical hole (5), and the dial indicator (31) of the dial indicator (3) is inserted into the vertical hole (5).

3. The composite gauge for the inner hole and inner hole depth of the half-shaft gear according to claim 2, characterized in that, The mounting base (2) is provided with a horizontal hole (6) communicating with the vertical hole (5), and a fastening screw (7) for locking the dial indicator (31) is installed in the horizontal hole (6).

4. The composite gauge for the inner hole and inner hole depth of the half-shaft gear according to claim 1, characterized in that, A handle (8) is also installed on the mounting base (2).

5. The composite gauge for the inner hole and inner hole depth of the half-shaft gear according to claim 1, characterized in that, The bottom surface of the mounting base (2) does not contact the workpiece (4).

6. The composite gauge for the inner hole and inner hole depth of the half-shaft gear according to claim 1, characterized in that, The bottom of the boss (1) is hollow.

7. The composite gauge for the inner hole and inner hole depth of the half-shaft gear according to claim 1, characterized in that, The axis of the boss (1), the axis of the mounting base (2), and the axis of the inner hole of the workpiece (4) are all the same axis.

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