CN210293076U

CN210293076U - Center distance detection tool for connecting rod

Info

Publication number: CN210293076U
Application number: CN201921386744.6U
Authority: CN
Inventors: 李强
Original assignee: Sichuan Mianzhu Xinkun Machinery Making Co ltd
Current assignee: Sichuan Mianzhu Xinkun Machinery Making Co ltd
Priority date: 2019-08-26
Filing date: 2019-08-26
Publication date: 2020-04-10
Anticipated expiration: 2029-08-26

Abstract

The utility model discloses a checking fixture, in particular to a center distance checking fixture for a connecting rod, belonging to the technical field of connecting rod detection devices; the checking fixture comprises a base frame with a placing plane, wherein a measuring mandrel for assembling a piece to be detected is arranged at one end of the placing plane of the base frame, the measuring mandrel can be transversely arranged on the placing plane in a movable mode, a measuring instrument is arranged at the other end of the placing plane, and after the piece to be detected is assembled through the measuring mandrel, a lever detection device and the side wall of a round hole of the piece to be detected are utilized to detect the center distance; the utility model discloses improved traditional detection device inconvenient operation and troublesome poeration's problem, can further improve simultaneously and detect the precision, the effectual detection efficiency that has improved promotes work efficiency.

Description

Center distance detection tool for connecting rod

Technical Field

The utility model relates to an examine utensil, especially an utensil is examined to centre-to-centre spacing that connecting rod was used belongs to connecting rod detection device technical field.

Background

The lever indicator mainly comprises a lever dial indicator and a dial indicator. The dial indicator is suitable for measuring the geometric shape and mutual position correctness of workpieces, and can be used for measuring small-size workpieces by an absolute method and measuring large-size workpieces by a relative method; the lever dial indicator, also called lever indicator or back indicator, is a measuring instrument for measuring geometric shape error and mutual position correctness of workpieces by utilizing a lever-gear transmission mechanism or a lever-screw transmission mechanism to change the size into pointer angular displacement and indicate the length size value, and the length can be measured by using a comparison method.

Racing links are typically large and small bore links, where the thickness at the smaller diameter bore is greater than the thickness at the larger diameter bore. In addition, in the course of processing of big aperture connecting rod of cycle racing, need carry out smoking detection to the connecting rod and whether reach standard with the centre-to-centre spacing of measuring hole, thereby in normal processing, the centre-to-centre spacing is minimum distance between two holes usually and the radius of big aperture obtains, and in present operation, its precision is lower to the detection of minimum spacing, and it is more troublesome to operate, and it can be more time-consuming and laborious to carry out the sampling inspection to field processing.

Disclosure of Invention

The invention of the utility model aims to: to the problem that exists, provide a centre-to-centre spacing examines utensil for connecting rod, should examine utensil and possess easy operation, advantage that detection effect is good to can effectual improvement job efficiency at processing scene.

The utility model adopts the technical scheme as follows:

the utility model provides a centre-to-centre spacing examines utensil for connecting rod, includes the bed frame that has the placing plane, and one end on the placing plane of this bed frame is provided with the measuring mandrel that is used for assembling to wait to detect the piece, and this measuring mandrel can transversely move set up on placing plane, and the other end on this placing plane is provided with measuring instrument, through measuring mandrel assembly wait to detect after the piece and utilize lever detection device and wait to detect the round hole lateral wall of piece in order to realize the detection of centre-to-centre spacing. The utility model discloses a centre-to-centre spacing that connecting rod was used examines utensil and makes with the help of measuring mandrel to wait to detect a one end fixed, and the other end detects, in the testing process, needs with sample distance, and rethread measuring instrument leans on the lateral wall of the round hole of the other end, can definitely acquire the production machined part from measuring instrument for the machining error between the sample, can confirm simultaneously whether accord with the processing standard fast.

Further, the base frame comprises a base plate and a supporting leg which plays a supporting role. By adopting the mode, the material cost of the base frame can be effectively saved.

Furthermore, the supporting legs are in threaded connection with the base plate so as to adjust the horizontal position of the placing plane in the mode. The horizontal position of the placing plane can be effectively adjusted by utilizing the mode.

Furthermore, a through hole is formed in the substrate, a measuring instrument is fixedly assembled below the substrate, and a lever contact used for detection of the measuring instrument penetrates through the through hole and is located above the placing plane. The fixed height of percentage table can be guaranteed to this mode, but direct contact round hole lateral wall.

Further, the measuring instrument is fixed below the substrate through a bracket.

Further, the bracket is fixed below the base plate through bolts.

Further, the bracket is provided with an assembling hole for assembling the measuring instrument and is fastened by a bolt arranged at the side part.

Furthermore, a pin hole is formed in the middle of the measuring mandrel, a corresponding pin groove is formed in the substrate, and the pin penetrates through the pin hole and the pin groove to slide in the pin groove and is fastened through the nut. The mode can effectively improve the universality of the checking fixture, and can measure the connecting rods with various specifications.

Further, the placing plane comprises a first placing plane and a second placing plane, the measuring instrument is arranged at the first placing plane, the detecting mandrel is arranged at the second placing plane, and a height difference is formed between the first plane and the second plane to adapt to the height difference of two ends of the piece to be detected. Due to the fact that the two ends of the piece to be detected have the thickness difference, the piece to be detected is kept in the horizontal direction by the aid of the method, and detection accuracy is improved.

Further, the measuring instrument is a dial indicator or a lever dial indicator.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

the utility model discloses an effectual traditional detection device that has improved operation inconvenience and the trouble problem of operation are examined to centre-to-centre spacing that connecting rod was used, can further improve simultaneously and detect the precision, it is fixed to detect a one end with the help of measuring the mandrel messenger, the other end detects, in the testing process, need be with the sample distance, the lateral wall of the round hole of the other end is leaned on to the rethread lever table, can definitely acquire the production machined part from lever table measuring instrument for the machining error between the sample, whether can confirm fast simultaneously and accord with the machining standard, thereby the effectual detection efficiency that has improved, promote work efficiency.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a top view of the present invention;

fig. 3 is a side view of the present invention;

fig. 4 is a schematic structural diagram of the bracket of the present invention.

The labels in the figure are: 1-pedestal, 11-base plate, 12-supporting leg, 2-measuring mandrel, 3-measuring instrument, 4-through hole, 5-bracket, 6-connecting rod, 7-pin and 8-pin groove.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Examples

A center distance detection tool for a connecting rod is shown in figures 1 to 4 and comprises a base frame 1 with a placing plane, a measuring mandrel 2 used for assembling a piece to be detected is arranged at one end of the placing plane of the base frame, the measuring mandrel 2 can be transversely arranged on the placing plane in a moving mode, a measuring instrument 3 is arranged at the other end of the placing plane, and after the piece to be detected is assembled through the measuring mandrel, a lever detection device and the side wall of a round hole of the piece to be detected are used for detecting the center distance.

As a more specific design, as shown in fig. 1 and 2, the detection object can be clearly obtained, the detection object is a connecting rod 6 for racing, and two circular holes are arranged on the connecting rod 6, and the circular holes are one big and one small. The checking fixture is mainly used for detecting whether the minimum distance of the round hole reaches the standard or not. In the machining process, the diameter of the round hole can be measured, the minimum distance is measured again, so that the center distance can be obtained, and after the diameter of the hole reaches the standard, whether the minimum distance between two holes of the piece to be detected reaches the standard or not is the standard for judging whether the production requirement is met or not.

Based on the design principle of the above embodiments, in another embodiment, the base frame 1 includes a base plate 11 and a support leg 12. As can be seen from the attached drawings, the material usage amount of the base can be effectively reduced by the design of the mode, and secondly, the mode is also favorable for the position movement of the checking fixture on the operation site.

As a more specific design, in one embodiment, the leg 12 is screwed to the base plate 11 to adjust the horizontal position of the lying plane. Of course, as can be taken from the drawings, the base plate 11 is provided with a threaded hole on the bottom surface thereof, and the leg is an externally threaded rod so as to be fixed to the base plate. As can be seen, the upper part of the leg, below the bottom surface of the base plate, is also provided with a nut. After the height is adjusted, the nut can be adjusted through threads, so that the upper end face of the nut is in contact with the bottom face of the substrate, and stability is guaranteed. More specifically, the legs 12 are 4 in total and are distributed in a rectangular shape below the base plate. In addition, the screw hole penetrates the substrate.

Based on the design of the above embodiment, in another embodiment, the substrate is provided with a through hole 4, and the measuring instrument is fixedly assembled below the substrate, and the lever contact used for detection of the measuring instrument passes through the through hole and is located above the placing plane. In this design, can assist the great hole of connecting rod and this through-hole edge to align with the design of through-hole 4 to can further improve detection efficiency, during the operation, the horizontal lateral wall of standard piece or waiting to detect the piece is kept close to with the lateral wall that the through-hole corresponds, thereby supplementary measurement to the connecting rod.

In principle, the measuring device is fixed below the base plate by means of a support 5 in another embodiment. This design is effectual utilizes the space of bed frame fire control, and this mode also more is favorable to the operator to observe simultaneously, waiting to detect the piece and assemble behind the measuring mandrel, the observer only need can adjust and realize measuring in the position of one side manual rotation connecting rod, can pay attention to the measuring instrument pointer change constantly in the middle of the measurement to acquire the minimum, in order to realize measurement accuracy's improvement.

In principle, based on the design of the above-described embodiment, as shown in fig. 4, in another embodiment, the measuring instrument is fixed below the substrate by a bracket 5. As a more specific design, in another embodiment thereof, the bracket 5 is fixed below the base plate by bolts. As a more specific design, as can be clearly seen from fig. 1 and 4, 2 assembling through holes are provided on the bracket, and the bolts pass through the assembling through holes and then are matched with the threaded holes provided on the bottom surface of the substrate to realize bolt assembling.

In addition to the above design, there is a need for further design, and in one embodiment, the bracket 5 is provided with a mounting hole for mounting the measuring instrument, and is fastened by a bolt provided at the side. Use figure 4 for referring to, combine figure 1, figure 2, be provided with on this support and be used for the pilot hole, be provided with the assembly pin on the measuring instrument, the below of pilot hole still is equipped with the bar groove that runs through support thickness, this bar groove intercommunication pilot hole, bar groove both sides place support is provided with the locking hole, and this locking hole runs through support width direction. Because there is the bar groove in the middle of the locking hole, consequently this locking hole is divided into two, and is concrete, and one of them locking hole is the screw hole, and the bolt is penetrated by another locking hole, thereby its screw rod realizes measuring instrument's fastening with the width of control bar groove with the cooperation of the locking hole that has the screw thread.

Based on the design principle of the above embodiment, in another embodiment, a pin hole 7 is formed in the middle of the measuring mandrel 3, a corresponding pin slot 8 is formed in the base plate, and the pin can slide in the pin slot by penetrating through the pin hole and the pin slot, and is fastened by a nut. With reference to fig. 1 and 3, the measuring mandrel has a cylindrical structure, and a pin hole is formed in the middle of the measuring mandrel. After the pin passes through the pin hole, the head of the pin is larger than the pin hole, after the pin passes through the pin hole and then passes through the pin groove, the bottom of the pin is matched with the assembly nut, and the fastening effect is realized through the matching of the nut and the screw thread of the pin.

In principle, in another embodiment, the placing plane includes a first placing plane and a second placing plane, the measuring instrument is disposed on the first placing plane, the detecting mandrel is disposed on the second placing plane, and a height difference is formed between the first placing plane and the second placing plane to adapt to a height difference between two ends of the piece to be detected. Referring to fig. 1, the placing plane has boundary lines with different heights, and the piece to be detected can also be seen that the thickness of the connecting rod at the round hole of the measuring mandrel is the thickest relative to the thickness of the connecting rod at the round hole at the other end, the design is mainly used for keeping the levelness of the connecting rod in the measuring process, and the height difference is mainly processed according to the thickness difference of the two ends of the connecting rod.

As a more specific design, in another specific embodiment, the measuring instrument is a dial indicator or a dial indicator. Of course, the dial indicator and the dial indicator are collectively called as the lever indicator. In the present embodiment, the dial indicator is more preferable.

In this embodiment, the specific detection method includes assembling the small circular hole of the standard sample on the measuring spindle, contacting the inner side wall of the large circular hole at the other end with the lever indicator, adjusting the distance between the measuring spindle and the lever indicator, fastening the measuring spindle after the adjustment is completed, and adjusting the lever indicator to be 0 (i.e., in an initial state). Secondly, the smaller round hole of the piece to be detected is assembled on the measuring mandrel 2, the position is adjusted, the contact of the lever meter is contacted with the inner side wall of the larger round hole, and the machining error is identified through the amplitude of the horizontal swing of the lever meter, so that the working efficiency can be effectively improved.

To sum up, the utility model discloses an effectual problem of improving traditional detection device inconvenient operation and troublesome poeration of centre-to-centre spacing that connecting rod was used, can further improve simultaneously and detect the precision, it is fixed to wait to detect a one end with the help of measuring the mandrel messenger, the other end detects, in the testing process, need with the sample distance, the lateral wall of the round hole of the other end is leaned on to the rethread lever table, can definitely acquire the processing error of production machined part for between the sample from the lever table, whether can confirm fast simultaneously and accord with the processing standard, thereby the effectual detection efficiency that has improved promotes work efficiency.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a centre-to-centre spacing utensil for connecting rod which characterized in that: including having bed frame (1) of placing the plane, the one end on the plane of placing of this bed frame is provided with and is used for assembling the measurement mandrel (2) of waiting to detect the piece, but this measurement mandrel (2) lateral shifting set up on placing the plane, should place the other end on the plane and be provided with measuring instrument (3), wait to detect after the piece and utilize lever detection device and the round hole lateral wall of waiting to detect the piece in order to realize the detection of centre-to-centre spacing through the measurement mandrel assembly.

2. The center distance measuring tool for the connecting rod as set forth in claim 1, wherein: the base frame (1) comprises a base plate (11) and a supporting leg (12) serving as a supporting function.

3. The center distance gauge for the connecting rod as claimed in claim 2, wherein: the supporting legs (12) and the base plate (11) are in threaded connection so as to adjust the horizontal position of the placing plane in the mode.

4. The center distance gauge for the connecting rod as claimed in claim 2, wherein: a through hole (4) is formed in the substrate, the measuring instrument is fixedly assembled below the substrate, and a lever contact for detection of the measuring instrument penetrates through the through hole and is located above the placing plane.

5. The center distance measuring tool for the connecting rod as set forth in claim 4, wherein: the measuring instrument is fixed below the substrate through a bracket (5).

6. The center distance gauge for the connecting rod as claimed in claim 5, wherein: the bracket (5) is fixed below the base plate through bolts.

7. The center distance gauge for the connecting rod as claimed in claim 5, wherein: the bracket (5) is provided with an assembling hole for assembling the measuring instrument and is fastened by a bolt arranged at the side part.

8. The center distance gauge for the connecting rod as claimed in claim 2, wherein: this measure mandrel (2) middle part and seted up the pin hole, seted up corresponding cotter way on the base plate, the pin runs through the pin hole and can realize sliding in the cotter way with the cotter way to fasten through the nut.

9. The center distance measuring tool for the connecting rod as set forth in claim 1, wherein: the placing plane comprises a first placing plane and a second placing plane, the measuring instrument is arranged at the first placing plane, the detecting mandrel is arranged at the second placing plane, and a height difference is formed between the first plane and the second plane to adapt to the height difference of two ends of the piece to be detected.

10. The center distance measuring tool for a connecting rod according to any one of claims 1 to 9, wherein: the measuring instrument is a dial indicator or a lever dial indicator.