Crankshaft hole site detection jig
By designing a crankshaft hole position detection fixture, using positioning blocks and cone blocks to fix the crankshaft, and combining it with a hole detection module to automatically detect hole position and diameter, the problem of tedious manual inspection is solved, and rapid and accurate hole position detection is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-24
- Publication Date
- 2026-03-06
AI Technical Summary
In existing technologies, crankshaft hole position detection relies on manual visual inspection, which makes the detection cumbersome and difficult to accurately determine the number and location of holes.
A crankshaft bore position detection fixture was designed, which uses positioning blocks and cone blocks to fix the crankshaft and combines a bore detection module to automatically detect the bore position and diameter. The fixture includes a bracket, a probe rod, and a ball bearing structure to facilitate sliding fit.
It enables rapid and accurate detection of the presence of crankshaft bores and whether the bore diameter is appropriate, reducing the workload of inspection and improving inspection efficiency and accuracy.
Smart Images
Figure CN223976581U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of crankshaft testing technology, and more specifically, relates to a crankshaft hole position testing fixture. Background Technology
[0002] After the crankshaft is formed, it needs to be drilled at multiple locations on its outer circumference. During the final inspection, each hole needs to be checked one by one to determine if there are any undrilled holes and whether the diameter of the holes is up to standard.
[0003] However, at present, such inspections are all done manually. Workers visually inspect the holes on the crankshaft to determine whether the number and position are accurate, and use corresponding tools to check whether the hole diameter is up to standard. This inspection method is quite cumbersome, and workers cannot easily determine whether the number and position of the holes are accurate. Therefore, there is an urgent need for a fixture that can facilitate the inspection of crankshaft holes. Utility Model Content
[0004] The main purpose of this utility model is to provide a crankshaft hole position detection fixture, which is designed to assist in the convenient and quick detection of hole positions by aligning the holes.
[0005] According to a first aspect of the present invention, a crankshaft hole position detection fixture is provided, including a base plate, a groove provided on the base plate, two positioning blocks fixedly fixed at intervals along the length of the groove, and a V-shaped groove for placing the crankshaft on the top of the positioning blocks;
[0006] Fixed seats and movable seats are arranged at intervals along the length of the groove on the base plate. Two positioning blocks are located between the fixed seats and the movable seats. A first cone block is provided on the fixed seat, and a second cone block is provided on the movable seat. The second cone block can move along the length of the groove. The first cone block and the second cone block cooperate to clamp the crankshaft located in the V-groove.
[0007] The base plate is provided with a probe module that corresponds one-to-one with the holes on the crankshaft. The probe module is located on both sides of the groove along its length direction. The probe module is used to detect whether there are holes at the corresponding positions on the crankshaft and whether the hole diameter is appropriate.
[0008] In the aforementioned crankshaft bore detection fixture, the bore detection module includes a bracket and a probe rod. The bracket is fixed to the base plate and has a through hole.
[0009] The probe includes a handle, a support, and a probe connected in sequence. The support slides with the through hole, and the outer diameter of the probe is adapted to the diameter of the hole at the corresponding position on the crankshaft.
[0010] In the aforementioned crankshaft bore detection fixture, the length of the detection part is adapted to the depth of the bore on the crankshaft.
[0011] In the crankshaft bore position detection fixture mentioned above, the inner wall of the through hole is provided with two sliding grooves, the sliding grooves extend along the sliding direction of the probe, and the two sliding grooves are evenly distributed circumferentially around the axis of the through hole;
[0012] The outer wall of the support is provided with an annular groove, and a ball bearing is provided between the annular groove and the sliding groove.
[0013] In the crankshaft bore position detection fixture described above, both ends of the slide groove along its extension direction are closed ends.
[0014] In the aforementioned crankshaft bore detection fixture, the bracket is composed of two blocks, each block having an arc-shaped notch, and the two arc-shaped notches of the blocks surround the through hole.
[0015] In the aforementioned crankshaft bore detection fixture, the movable seat includes a seat body and a telescopic mechanism disposed in the seat body. The telescopic mechanism is connected to the second cone block to drive the second cone block to translate.
[0016] One of the above-described technical solutions of this utility model has at least one of the following advantages or beneficial effects:
[0017] In this invention, a positioning block is used to place the crankshaft. The V-groove can accurately position the crankshaft. The crankshaft is then fixed based on the first and second cones. After the crankshaft is positioned, each probe module will correspond to the corresponding hole on the crankshaft, which can detect whether the hole exists and whether the inner diameter of the hole is appropriate. This greatly reduces the workload during testing and is convenient and quick. Attached Figure Description
[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments;
[0019] Figure 1 This is a top view of the first embodiment of the present invention;
[0020] Figure 2 This is a front view of the probe module according to the first embodiment of this utility model;
[0021] Figure 3 This is the first embodiment of the present utility model. Figure 2 AA section view;
[0022] Figure 4 This is a schematic diagram of the probe rod according to the first embodiment of this utility model.
[0023] The figure labels for each figure are as follows:
[0024] 1. Base plate; 11. Groove; 2. Positioning block; 21. V-groove; 3. Fixed seat; 31. First cone block; 4. Movable seat; 41. Second cone block; 42. Seat body; 43. Telescopic mechanism; 5. Probe module; 51. Bracket; 511. Through hole; 512. Slide groove; 513. Block; 52. Probe rod; 521. Handle; 522. Support part; 523. Detection part; 524. Annular groove; 53. Ball bearing. Detailed Implementation
[0025] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0026] The following disclosure provides many different implementation methods or examples for different solutions to implement this utility model.
[0027] Reference Figures 1 to 4 As shown, a crankshaft hole position detection fixture includes a base plate 1, a groove 11 on the base plate 1, two positioning blocks 2 fixed at intervals along the length of the groove 11, and a V-groove 21 for placing the crankshaft on the top of the positioning block 2.
[0028] A fixed seat 3 and a movable seat 4 are arranged at intervals along the length direction of the groove 11 on the base plate 1. Two positioning blocks 2 are located between the fixed seat 3 and the movable seat 4. A first cone block 31 is provided on the fixed seat 3, and a second cone block 41 is provided on the movable seat 4. The second cone block 41 can move along the length direction of the groove 11. The first cone block 31 and the second cone block 41 cooperate to clamp the crankshaft located in the V-groove 21.
[0029] The base plate 1 is provided with a probe module 5 that corresponds one-to-one with the holes on the crankshaft. The probe module 5 is located on both sides of the groove 11 along its length direction. The probe module 5 is used to detect whether there are holes at the corresponding positions on the crankshaft and whether the hole diameter is appropriate.
[0030] The crankshaft is placed using the positioning block 2. The position of the crankshaft can be well positioned by relying on the V-groove 21. After the crankshaft is placed, the second cone block 41 is moved. The first cone and the second cone cooperate to clamp the crankshaft. After the crankshaft is positioned, each probe module 5 will correspond to the corresponding hole on the crankshaft. It can detect whether the hole exists and whether the inner diameter of the hole is appropriate, which greatly reduces the workload during inspection and is convenient and fast.
[0031] In this embodiment, the probe module 5 includes a bracket 51 and a probe rod 52. The bracket 51 is fixed on the base plate 1 and has a through hole 511.
[0032] The probe 52 includes a handle 521, a support 522 and a probe 523 connected in sequence. The support 522 is slidably fitted with the through hole 511, and the outer diameter of the probe 523 is adapted to the diameter of the hole at the corresponding position on the crankshaft.
[0033] Once the crankshaft is fixed, each probe 52 will align with its corresponding hole. The inspector can pull the probe 52 to see if the probe part 523 can be inserted into the hole. Based on this visual inspection, the inspector can determine whether there is a hole at that position and whether the inner diameter of the hole matches the probe part 523. The inspector does not need to search for the holes one by one and can make a direct judgment, which greatly reduces the workload.
[0034] Preferably, the length of the probe 523 is adapted to the depth of the hole on the crankshaft, which can further determine whether the hole depth is appropriate.
[0035] In this embodiment, since the probe 52 needs to slide frequently, if a through hole 511 is simply provided on the bracket 51 to cooperate with the support part 522, the probe 52 will be difficult to slide and will wear out. Therefore, two sliding grooves 512 are provided on the inner wall of the through hole 511. The sliding grooves 512 extend along the sliding direction of the probe 52, and the two sliding grooves 512 are evenly distributed around the axis of the through hole 511.
[0036] The outer wall of the support part 522 is provided with an annular groove 524. A ball bearing 53 is provided between the annular groove 524 and the slide groove 512. The ball bearing 53 can assist the sliding of the probe rod 52. The cooperation between the slide groove 512 and the annular groove 524 can limit the sliding direction of the probe rod 52 and prevent the ball bearing 53 from deviating.
[0037] Preferably, both ends of the groove 512 along its extension direction are closed ends, so the groove 512 will not extend to both ends of the through hole 511. The length of the groove 512 is less than the length of the through hole 511, which can prevent the ball 53 from running out.
[0038] In this embodiment, the bracket 51 consists of two blocks 513. Each block 513 has an arc-shaped notch, and the arc-shaped notches of the two blocks 513 form a through hole 511. Each arc-shaped notch has a groove 512 on its inner wall. This split design facilitates the installation of the ball bearing 53 and the probe 52. During installation, the two blocks 513 are not closed at first. The ball bearing 53 is adhered to the groove 512 using grease. Then, the annular groove 524 of the probe 52 is aligned with the ball bearing 53, and the blocks 513 are closed and locked. The two blocks 513 can be locked with bolts.
[0039] In this embodiment, the movable seat 4 includes a seat body 42 and a telescopic mechanism 43 disposed in the seat body 42. The telescopic mechanism 43 is connected to the second cone block 41 to drive the second cone block 41 to translate.
[0040] The telescopic mechanism 43 includes a lead screw and a nut. The movable seat 4 is provided with a handle on the outside. The handle is connected to the nut, so the nut can be rotated to control the translation of the lead screw. The lead screw is connected to the second cone, so the second cone can translate.
[0041] In other embodiments, the telescopic mechanism 43 may also be a cylinder, a quick clamp, or a rack and pinion structure.
[0042] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A crank hole position detection jig characterized by comprising: The bottom plate is provided with a groove, two positioning blocks are fixed in the groove along the length direction of the groove, and a V-shaped groove for placing a crankshaft is arranged on the top of the positioning blocks; The fixed seat is provided with a first taper block, the movable seat is provided with a second taper block which can move along the length direction of the groove, and the first taper block and the second taper block clamp the crankshaft in the V-shaped groove. The bottom plate is provided with a probe hole module corresponding to the hole positions on the crankshaft, the probe hole module is located on both sides of the groove along the length direction of the groove, and the probe hole module is used for detecting whether the corresponding positions on the crankshaft have hole positions and whether the hole diameters are appropriate.
2. The crank hole position detection jig according to claim 1, characterized by The probe hole module comprises a support and a probe rod, the support is fixed on the bottom plate, and the support is provided with a through hole; The probe rod comprises a handle part, a support part and a detection part which are connected in sequence, the support part is in sliding fit with the through hole, and the outer diameter of the detection part is matched with the hole diameter of the hole position corresponding to the crankshaft.
3. The crank hole position detection jig according to claim 2, characterized by The length of the detection part is matched with the depth of the hole position on the crankshaft.
4. The crank hole position detection jig according to claim 2, characterized by The inner wall of the through hole is provided with two sliding grooves which extend along the sliding direction of the probe rod, and the two sliding grooves are circumferentially distributed around the axis of the through hole. The outer wall of the support part is provided with an annular groove, and the annular groove is provided with balls between the sliding grooves.
5. The crank hole position detection jig according to claim 4, characterized by The two ends of the sliding groove along the extension direction thereof are both closed ends.
6. The crank hole position detection jig according to claim 4, characterized by The support is composed of two blocks, the blocks are provided with arc-shaped notches, and the arc-shaped notches of the two blocks enclose the through hole.
7. The crank hole position detection jig according to claim 1, characterized by The movable seat comprises a seat body and a telescopic mechanism arranged in the seat body, the telescopic mechanism is connected with the second taper block to drive the second taper block to translate.