Checking fixture for threaded hole bottom hole of crankshaft blank surface

Abstract

The utility model relates to a detection tool for a threaded hole bottom hole of a crankshaft blank surface, and belongs to the technical field of engine part manufacturing. Comprising a first testing fixture base body, a second testing fixture base body, a locking bolt, a no-go-end bolt and a sleeve. The first checking fixture base body is slidably inserted into the second checking fixture base body, the locking bolt penetrates through the side wall of the second checking fixture base body and abuts against the first checking fixture base body, and the no-go-end bolt is detachably installed at the end, away from the first checking fixture base body, of the second checking fixture base body and abuts against the first checking fixture base body. The sleeve is slidably sleeved on the first testing fixture base body and the second testing fixture base body. According to the utility model, rapid and accurate detection of the bottom hole depth of the crankshaft blank surface threaded hole is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to engine parts manufacturing technical field especially relates to a crankshaft blank surface thread hole bottom hole gauge. BACKGROUND

[0002] The crankshaft is the important part of high rotation in the engine, and the crankshaft bears the force from the connecting rod and transforms into the torque to be transmitted to other parts during the working process, and drives other parts to work. The crankshaft is subjected to the centrifugal force of rotating mass, the periodic change gas inertial force and the reciprocating inertial force, so that the crankshaft bears the bending torsion load. The thread hole is arranged on the crankshaft, and is generally used for installing the oil plug, the small-sized parts and the like, and if the bottom hole depth of the thread hole is insufficient, the thread depth is insufficient, and further, the thread torque is insufficient, and the parts are loose. Therefore, detecting whether the thread hole bottom hole is qualified is an important procedure in the crankshaft manufacturing process. SUMMARY

[0003] The utility model solves the technical problem that: provide a kind of crankshaft blank surface thread hole bottom hole gauge, to realize the quick, accurate detection of the depth of crankshaft blank surface thread hole bottom hole.

[0004] The utility model solves the technical problem that the above-mentioned technical scheme is as follows: a kind of crankshaft blank surface thread hole bottom hole gauge, comprising: first gauge base body, second gauge base body, locking bolt, end bolt and sleeve;The first gauge base body is slidably inserted in the second gauge base body, the locking bolt passes through the side wall of the second gauge base body, and is in abutment with the first gauge base body, the end bolt is detachably installed at the end of the second gauge base body away from the first gauge base body, and the sleeve is slidably sleeved on the first gauge base body and the second gauge base body.

[0005] The utility model has the beneficial effects that: the first gauge base body is slidably inserted in the second gauge base body, and is connected by locking bolt, it is favorable to realize the length adjustment of whole gauge, to adapt to the detection of different thread hole bottom hole depth, the sleeve is slidably sleeved on the first gauge base body and the second gauge base body, it is favorable to judge whether the bottom hole depth of thread hole is qualified by judging the position of sleeve on the second gauge base body, and the end bolt is favorable to detect whether the bottom hole diameter of thread hole is qualified.

[0006] On the basis of the above technical scheme, the utility model can also be improved as follows.

[0007] Further, the first gauge base body includes: end bolt, plug-in rod and connecting rod, the end bolt and the plug-in rod are one-to-one installed at the two ends of the connecting rod.

[0008] The beneficial effect of the further scheme is that the through-end bolt cooperates with the end-stop bolt to facilitate detection of whether the bottom hole diameter of the threaded hole is qualified, and the insertion rod facilitates slidable insertion with the second gauge base.

[0009] Further, the insertion rod is provided with a locking groove on the side wall.

[0010] The beneficial effect of the further scheme is that the locking groove facilitates providing an abutting surface for the locking bolt to fix the first gauge base and the second gauge base.

[0011] Further, the two ends of the second gauge base are provided with a first connecting screw hole and an insertion hole one by one, the insertion rod is slidably inserted into the insertion hole, the first connecting screw hole and the insertion hole are blind holes, and the end-stop bolt is threadedly connected with the first connecting screw hole.

[0012] The beneficial effect of the further scheme is that the insertion hole facilitates providing an insertion space for the connection with the first gauge base, and the first connecting screw hole facilitates providing a space for the installation of the end-stop bolt.

[0013] Further, the second gauge base is provided with a second connecting screw hole and a locking bolt hiding groove on the side wall, the second connecting screw hole is a threaded through hole communicating with the insertion hole, the locking bolt hiding groove is a groove coaxially arranged on the outer periphery of the second connecting screw hole, the locking bolt passes through the second connecting screw hole and abuts against the locking groove, and the locking bolt is adaptively arranged in the locking bolt hiding groove.

[0014] The beneficial effect of the further scheme is that the second connecting screw hole facilitates providing a locking channel for the locking bolt to fix the first gauge base and the second gauge base, and the locking bolt hiding groove facilitates hiding the nut of the locking bolt on the side wall of the second gauge base, thereby avoiding interference with the sliding of the sleeve.

[0015] Further, the through-end bolt abuts against the end of the sleeve.

[0016] The beneficial effect of the further scheme is that it facilitates avoiding the sleeve from sliding out of the end of the first gauge base.

[0017] Further, the second gauge base is provided with a depth determination groove on the side wall, and the depth determination groove is an annular groove.

[0018] The beneficial effect of the further scheme is that when the through-end bolt is inserted into the bottom hole of the threaded hole, the sleeve is lifted, and if the end of the sleeve away from the through-end bolt is located in the interval of the depth determination groove, it is determined that the bottom hole depth of the detected threaded hole is qualified.

[0019] Further, a scale line is arranged on the side wall of the second gauge base.

[0020] The beneficial effect of the further scheme is that the scale line is beneficial to provide a reference for adjusting the length of mutual insertion between the first gauge base and the second gauge base. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 An overall structure schematic view is provided for the embodiment of the utility model;

[0022] Figure 2 An overall structure schematic view without sleeve is provided for the embodiment of the utility model;

[0023] Figure 3 A structure schematic view of the first gauge base is provided for the embodiment of the utility model;

[0024] Figure 4 A structure schematic view of the second gauge base is provided for the embodiment of the utility model Figure 1 ;

[0025] Figure 5 A structure schematic view of the second gauge base is provided for the embodiment of the utility model Figure 2 .

[0026] In the drawings, the component list represented by each sign is as follows:

[0027] 1, the first gauge base; 2, the second gauge base; 3, locking bolt; 4, end bolt; 5, sleeve; 11, through end bolt; 12, insertion rod; 13, connecting rod; 21, depth determination groove; 22, first connecting screw hole; 23, second connecting screw hole; 24, locking bolt hidden groove; 25, scale line; 26, insertion hole; 121, locking groove. DETAILED DESCRIPTION

[0028] The principle and features of the utility model are described below, and the examples are only used to explain the utility model, and are not used to limit the scope of the utility model.

[0029] As shown in Figure 1 and Figure 2 , a gauge for crankshaft blank surface threaded hole bottom hole includes: a first gauge base 1, a second gauge base 2, a locking bolt 3, an end bolt 4 and a sleeve 5; the first gauge base 1 is slidably inserted into the second gauge base 2, the locking bolt 3 passes through the side wall of the second gauge base 2 and abuts against the first gauge base 1, the end bolt 4 is detachably installed at the end of the second gauge base 2 away from the first gauge base 1, and the sleeve 5 is slidably sleeved on the first gauge base 1 and the second gauge base 2.

[0030] The utility model discloses the beneficial effect is: first gauge base body can slideable be inserted in second gauge base body, and be connected through locking bolt, be favorable to realize the length adjustment of whole gauge, to adapt to the detection of different thread hole bottom hole depth, sleeve can slideable be set on first gauge base body and second gauge base body, be favorable to judge the bottom hole depth of thread hole whether qualified through judging the position of sleeve on second gauge base body, and end bolt is favorable to detect the bottom hole diameter of thread hole whether qualified.

[0031] Preferably, as shown in the figure, the first gauge base body 1 comprises: a through-end bolt 11, a plug-in rod 12 and a connecting rod 13, the through-end bolt 11 and the plug-in rod 12 are installed on both ends of the connecting rod 13 one by one. Figure 3

[0032] It should be noted that in the preferred embodiment of the utility model, the through-end bolt 11 is threadedly installed at the end of the connecting rod 13, so that the bottom hole diameter of different thread holes can be detected by replacing the through-end bolt 11 of different diameters.

[0033] The beneficial effect of the above-mentioned preferred scheme is that the through-end bolt cooperates with the end bolt to facilitate the detection of whether the bottom hole diameter of the thread hole is qualified, and the plug-in rod facilitates the slidable plug-in connection with the second gauge base body.

[0034] Preferably, as shown in the figure, the first gauge base body 1 comprises: a through-end bolt 11, a plug-in rod 12 and a connecting rod 13, the through-end bolt 11 and the plug-in rod 12 are installed on both ends of the connecting rod 13 one by one. Figure 3

[0035] The beneficial effect of the above-mentioned preferred scheme is that the locking groove provides an abutting surface for the locking bolt to fix the first gauge base body and the second gauge base body.

[0036] Preferably, as shown in the figure, the first gauge base body 1 comprises: a through-end bolt 11, a plug-in rod 12 and a connecting rod 13, the through-end bolt 11 and the plug-in rod 12 are installed on both ends of the connecting rod 13 one by one. Figure 4

[0037] The beneficial effect of the above-mentioned preferred scheme is that the plug-in hole provides a plug-in space for the connection with the first gauge base body, and the first connecting screw hole provides a space for the installation of the end bolt.

[0038] Preferably, as shown in the figure, the first gauge base body 1 comprises: a through-end bolt 11, a plug-in rod 12 and a connecting rod 13, the through-end bolt 11 and the plug-in rod 12 are installed on both ends of the connecting rod 13 one by one. Figure 4 ​​​As shown in the figure, the side wall of the second gauge base 2 is provided with a second connecting screw hole 23 and a locking bolt hiding groove 24, the second connecting screw hole 23 is a threaded hole communicating with the insertion hole 26, and the locking bolt hiding groove 24 is a groove coaxially arranged on the outer periphery of the second connecting screw hole 23, the locking bolt 3 passes through the second connecting screw hole 23 and abuts against the locking groove 121, and the locking bolt 3 is adaptively arranged in the locking bolt hiding groove 24.

[0039] The beneficial effect of the above preferred scheme is that the second connecting screw hole is beneficial to provide a locking channel for the locking bolt to fix the first gauge base and the second gauge base, and the locking bolt hiding groove is beneficial to hide the nut of the locking bolt on the side wall of the second gauge base, thereby avoiding interference caused by the sliding of the sleeve.

[0040] Preferably, as shown in the figure, Figure 1 As shown in the figure, the end of the through-end bolt 11 abuts against the end of the sleeve 5.

[0041] The beneficial effect of the above preferred scheme is that it is beneficial to avoid the sleeve from sliding out of the end of the first gauge base.

[0042] Preferably, as shown in the figure, Figure 4 and Figure 5 As shown in the figure, the side wall of the second gauge base 2 is provided with a depth determination groove 21, and the depth determination groove 21 is an annular groove.

[0043] The beneficial effect of the above preferred scheme is that when the through-end bolt is inserted into the bottom hole of the threaded hole, the sleeve is lifted, and if the end of the sleeve away from the through-end bolt is located in the interval of the depth determination groove, it is determined that the bottom hole depth of the detected threaded hole is qualified.

[0044] Preferably, as shown in the figure, Figure 5 As shown in the figure, the side wall of the second gauge base 2 is provided with a scale line 25.

[0045] The beneficial effect of the above preferred scheme is that the scale line is beneficial to provide a reference for adjusting the length of mutual insertion between the first gauge base and the second gauge base.

[0046] The working process of the utility model is introduced as follows:

[0047] As shown in the figure, Figures 1 to 5As shown, first use the air gun and other tools to punch the inside of all screw holes on the crankshaft blank surface to be free of iron filings and other impurities, and wipe the through-end bolt 11 and the stop-end bolt 4 to be free of stains with a dust-free cloth; then insert the stop-end bolt 4 into the threaded hole, if it cannot be inserted, it is determined that the diameter of the threaded hole is qualified; then insert the through-end bolt 11 into the threaded hole, if it can be inserted, it is determined that the diameter of the threaded hole is qualified; finally, pass the through-end bolt 11 to the bottom hole of the threaded hole, and check the position of the sleeve 5, if the end of the sleeve 5 away from the through-end bolt 11 is located in the depth determination groove 21, it is determined that the bottom hole depth of the threaded hole is qualified; after the detection is completed, the gauge is taken out, and the through-end bolt 11 and the stop-end bolt 4 are cleaned using a cleaning tool.

[0048] When the bottom hole depth of the threaded hole changes, first observe the position of the end of the sleeve 5 on the scale line 25, mark it as scale one, then loosen the locking bolt 3, and push and pull the plug-in rod 12, so that the plug-in rod 12 is pulled out or pushed in the plug-in hole 26, by observing the position of the end of the sleeve 5 on the scale line 25, until the distance between the marked scale one is the changed length, stop pushing and pulling the plug-in rod 12, and tighten the locking bolt 3; finally, repeat the above operation to realize the detection of the bottom hole of the threaded hole after the depth changes.

[0049] When the diameter of the threaded hole changes, only the through-end bolt 11 and the stop-end bolt 4 of the corresponding size need to be replaced, and the above operation is repeated, so that the detection of the bottom hole of the threaded hole after the diameter changes can be realized.

[0050] Compared with the existing blank surface threaded hole bottom hole detection technology, the tool for detecting the depth of the blank surface threaded hole is simple in structure and convenient to use, the vertical movement of the sleeve is used to detect whether the depth of the blank surface threaded hole meets the requirements of the customer, and the recognition accuracy and efficiency are high.

[0051] In the description of the utility model, it should be understood that the directions or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model.

[0052] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and do not connote or imply any relative importance or any meaning pertaining to the quantity of the features being described. Thus, a feature defined with "first", "second", etc. can include at least one of the features, explicitly or implicitly. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless specifically defined otherwise.

[0053] In the present application, unless specifically defined and limited otherwise, the terms "mounting", "connecting", "connection", "fixed", and the like should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship of two elements, unless specifically defined otherwise. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0054] In the present application, unless specifically defined and limited otherwise, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0055] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or features of different embodiments or examples described in the present application without contradiction.

[0056] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. Those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A crankshaft blank face thread hole bottom hole gauge, characterized in that, The utility model relates to a first gauge base (1), second gauge base (2), locking bolt (3), end bolt (4) and sleeve (5), the first gauge base (1) can be slidably inserted in the second gauge base (2), the locking bolt (3) passes through the lateral wall of the second gauge base (2) and is in abutment with the first gauge base (1), the end bolt (4) is detachably installed at the end of the second gauge base (2) away from the first gauge base (1), the sleeve (5) is slidably sleeved on the first gauge base (1) and the second gauge base (2). The first gauge base (1) includes a through-end bolt (11), a plug-in rod (12) and a connecting rod (13), the through-end bolt (11) and the plug-in rod (12) are one-to-one installed at both ends of the connecting rod (13).

2. The crankshaft blank face thread hole bottom hole detecting tool according to claim 1, characterized in that, The lateral wall of the plug-in rod (12) is provided with a locking groove (121), and the locking groove (121) is a strip-shaped groove structure.

3. The tool for checking the bottom hole of the threaded hole on the surface of the crankshaft blank according to claim 2, characterized in that, Both ends of the second gauge base (2) are one-to-one provided with a first connecting screw hole (22) and a plug-in hole (26), the first connecting screw hole (22) and the plug-in hole (26) are both blind holes, the plug-in rod (12) is slidably inserted in the plug-in hole (26), and the end bolt (4) is in threaded connection with the first connecting screw hole (22).

4. The crankshaft blank face thread hole bottom hole detecting tool according to claim 3, characterized in that, The lateral wall of the second gauge base (2) is provided with a second connecting screw hole (23) and a locking bolt hiding groove (24), the second connecting screw hole (23) is a threaded through hole communicating with the plug-in hole (26), the locking bolt hiding groove (24) is a groove coaxially arranged on the outer periphery of the second connecting screw hole (23), the locking bolt (3) passes through the second connecting screw hole (23) and is in abutment with the locking groove (121), and the locking bolt (3) is adaptively arranged in the locking bolt hiding groove (24).

5. The tool for checking the bottom hole of the threaded hole of the crankshaft blank according to claim 4, wherein The through-end bolt (11) is in abutment with the end of the sleeve (5).

6. The crankshaft blank face thread hole bottom hole detecting tool according to claim 2, characterized in that, The lateral wall of the second gauge base (2) is provided with a depth determination groove (21), and the depth determination groove (21) is an annular groove.

7. The crankshaft blank face thread hole bottom hole detecting tool according to claim 1, characterized in that, The lateral wall of the second gauge base (2) is provided with a scale line (25).

8. The crankshaft blank face thread hole bottom hole detecting tool according to claim 1, characterized in that, ​

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