Measuring tool for measuring roughness of crankshaft hole

Abstract

The utility model belongs to the technical field of roughness measurement, and discloses a crankshaft hole roughness measurement tool which comprises a rack and an adjusting assembly, the adjusting assembly comprises a sliding piece, a Y-axis adjusting structure arranged on the sliding piece, a connecting base arranged on the Y-axis adjusting structure and two clamping plates arranged on the connecting base, and the clamping plates are arranged oppositely. A clamping space for clamping the roughness measuring instrument is formed between the two clamping plates, the clamping plates can move relative to the connecting base in the Z-axis direction, the Y-axis adjusting structure is used for driving the connecting base to move in the Y-axis direction, and the sliding piece is slidably connected to the rack in the X-axis direction. On one hand, the crankshaft hole roughness measuring efficiency is improved, the measuring accuracy is improved, on the other hand, the workload of workers is reduced, the phenomenon that a professional measuring site needs to be set up is avoided, and therefore the crankshaft hole roughness measuring cost is reduced; and the operation steps for measuring the roughness of the crankshaft hole are simplified.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of roughness measurement, and particularly relates to a measurement tool for roughness measurement of a crankshaft hole. BACKGROUND

[0002] The crankshaft is an important component of the engine, which can convert the linear thrust from the piston connecting rod into rotary torque, and realize the conversion of the piston reciprocating motion into the crankshaft circular motion. This conversion process enables the engine to output continuous and smooth power.

[0003] In order to reduce the friction and wear during the rotation of the crankshaft, a conveying channel for lubricating oil flow is arranged in the crankshaft, and a crankshaft hole communicating with the conveying channel is arranged on the outer circumferential surface of the crankshaft. The roughness measurement of the crankshaft hole is an important link for controlling the quality of the crankshaft. Through the roughness measurement of the crankshaft hole, the problem of excessive roughness can be found and handled in time.

[0004] At present, there are two ways to measure the roughness of the crankshaft hole. One is that the staff manually measures the roughness of the crankshaft hole by holding a roughness measuring instrument, which leads to low efficiency of measuring the roughness of the crankshaft hole. The other way is to send the crankshaft to a fixed detection position separately, fix the roughness measuring instrument by using a special robot, and use the mechanical arm of the robot to contact the orifice of the crankshaft hole by the stylus on the roughness measuring instrument and move vertically, which leads to the need of professional measuring site when measuring the roughness of the crankshaft hole, and the operation is complex, which also affects the efficiency of measuring the roughness of the crankshaft hole. CONTENT OF THE INVENTION

[0005] The application provides a measurement tool for roughness measurement of a crankshaft hole to solve at least one of the above technical problems.

[0006] The technical scheme adopted by the application is as follows:

[0007] A measurement tool for roughness measurement of a crankshaft hole, comprising a rack and an adjusting assembly, the adjusting assembly comprising a sliding piece, a Y-axis adjusting structure arranged on the sliding piece, a connecting seat arranged on the Y-axis adjusting structure, and a clamping plate arranged on the connecting seat, the clamping plate is oppositely arranged with two clamping plates, and a clamping space for clamping a roughness measuring instrument is formed between the two clamping plates, the clamping plate can move relative to the connecting seat along the Z-axis direction, the Y-axis adjusting structure is used to drive the connecting seat to move in the Y-axis direction, and the sliding piece is slidably connected to the rack along the X-axis direction.

[0008] By adopting the technical scheme, when the roughness of the crankshaft hole is measured by using the measuring tool in the application, the roughness measuring instrument is first installed in the clamping space formed between the two clamping plates to fix the roughness measuring instrument by the clamping force of the two clamping plates, then the measuring tool is installed on the joint surface of the engine block and the oil pan, then the sliding piece is adjusted, so that the adjusting assembly drives the roughness measuring instrument to move to the required position in the X-axis direction, then the Y-axis adjusting structure is operated to adjust the connecting seat in the Y-axis direction, so that the roughness measuring instrument moves to the required position in the Y-axis direction, then the clamping plate is adjusted to drive the roughness measuring instrument to move in the Z-axis direction, and finally the stylus of the roughness measuring instrument can extend into the crankshaft hole to measure the roughness of the crankshaft hole on the engine block. On the one hand, compared with the staff holding the roughness measuring instrument to measure the roughness of the crankshaft hole, the efficiency of the roughness measurement of the crankshaft hole is improved and the measurement accuracy is improved. On the other hand, compared with sending the crankshaft to a fixed detection position, the workload of the staff is reduced, the efficiency of the roughness measurement of the crankshaft hole is improved, the need for a professional measurement site is avoided, the cost of the roughness measurement of the crankshaft hole is reduced, and the operation steps of the roughness measurement of the crankshaft hole are simplified.

[0009] In addition, by adjusting the sliding piece, the Y-axis adjusting structure and the clamping plate, the position of the roughness measuring instrument can be adjusted, so that the roughness of multiple crankshaft holes can be measured at one time to further improve the efficiency of the roughness measurement of the crankshaft hole.

[0010] Optionally, the sliding piece includes a sliding plate and a connecting plate arranged at the end of the sliding plate, and a sliding space is formed between the connecting plate and the sliding plate. The rack has a guide rail in the sliding space, and the Y-axis adjusting structure is arranged on the sliding plate.

[0011] By adopting the technical scheme, when the roughness measuring instrument is adjusted in the X-axis direction, the sliding plate is pushed to drive the connecting plate to move, and then the connecting plate slides relative to the guide rail. On the one hand, the sliding cooperation between the connecting plate and the guide rail realizes the guidance of the movement of the sliding piece, and on the other hand, the connection between the sliding piece and the rack is realized, and the structure of the sliding piece is simplified to reduce the production difficulty and production cost of the measuring tool.

[0012] Optionally, the rack has locking ribs above the connecting plate, the locking ribs are provided with a plurality of threaded holes at intervals along the length direction, locking bolts are screwed into the threaded holes corresponding to the connecting plate, the locking bolts have locking positions abutting against the connecting plate and unlocking positions separated from the connecting plate.

[0013] Optionally, a locking bolt is screwed into each threaded hole.

[0014] By adopting the above technical scheme, when the position of the roughness measuring instrument in the X-axis direction is adjusted, the locking bolt is first screwed to separate the locking bolt from the connecting plate, that is, the locking bolt moves from the locking position to the unlocking position, and then the sliding plate is adjusted, so that the sliding plate drives the Y-axis adjusting structure to move in the X-axis direction, the Y-axis adjusting structure drives the connecting seat to move in the X-axis direction, the connecting seat drives the clamping plate and the roughness measuring instrument to move in the X-axis direction, and when the roughness measuring instrument moves to the required position, the locking bolt is unscrewed to abut against the connecting plate, that is, the locking bolt moves from the unlocking position to the locking position, to lock the sliding member, thereby increasing the stability of the roughness measuring instrument. In addition, by setting the locking bolt, the abutting force of the locking bolt on the connecting plate can be used to eliminate the play between the connecting plate and the guide rail, to further increase the stability of the roughness measuring instrument.

[0015] Optionally, the distance between adjacent two threaded holes is less than the width of the connecting plate.

[0016] By adopting the above technical scheme, since the distance between adjacent two threaded holes is less than the width of the connecting plate, the locking bolt can lock the connecting plate in any position, to increase the flexibility of adjusting the roughness measuring instrument in the X-axis direction, to ensure that the roughness measurement can measure more positions of the crankshaft hole.

[0017] Optionally, the Y-axis adjusting structure, the connecting seat and the clamping plate are located on the side of the sliding plate, so that the roughness measuring instrument and the sliding plate form an avoidance in the Z-axis direction.

[0018] By adopting the above technical scheme, since the Y-axis adjusting structure, the connecting seat and the clamping plate are located on the side of the sliding plate, the roughness measuring instrument installed in the clamping space can form an avoidance with the connecting plate in the Z-axis direction, to ensure the adjustment range of the roughness measuring instrument in the Z-axis direction, thereby ensuring the flexibility of the measuring tool.

[0019] Optionally, the guide rail has a starting end and an ending end opposite to the starting end, the rack has a first end and a second end opposite to the first end, the ending end abuts against the second end, the starting end is spaced apart from the first end, and a distance between the starting end and the first end is L, a width of the adjusting assembly is D, and L and D satisfy L≥D.

[0020] By adopting the technical scheme, since L≥D, a space for installing the adjusting assembly is formed between the starting end of the guide rail and the first end of the rack, so that the effect of facilitating installation of the adjusting assembly is achieved, the production difficulty of the measuring tool is reduced, and the adjusting range of the roughness measuring instrument in the X-axis direction is ensured, so that the flexibility of the measuring tool is ensured.

[0021] Optionally, the Y-axis adjusting structure comprises a support plate arranged on the sliding member, an adjusting rod threadedly connected to the support plate, and a guide rod penetrating through the support plate, the guide rod is arranged parallel to the adjusting rod and fixedly connected to the connecting seat, and an end of the adjusting rod away from the support plate is provided with a transmission block located in the connecting seat.

[0022] By adopting the technical scheme, when the roughness measuring instrument is adjusted in the Y-axis direction, the adjusting rod is rotated, the adjusting rod and the support plate are relatively rotated, since the adjusting rod is threadedly connected to the support plate and the guide rod penetrates through the support plate, the adjusting rod drives the transmission block to move in the Y-axis direction, the connecting seat moves in the Y-axis direction under the action of the transmission block, the connecting seat drives the clamping plate and the roughness measuring instrument to move in the Y-axis direction, so that the roughness measuring instrument is adjusted in the Y-axis direction; by arranging the guide rod, the movement of the connecting seat in the Y-axis direction is guided, and the connecting seat is prevented from being synchronously rotated with the adjusting rod, so that the adjusting efficiency of the roughness measuring instrument in the Y-axis direction is ensured, and the stability of the roughness measuring instrument is increased.

[0023] Optionally, the connecting seat comprises a seat body and a C-shaped member slidingly connected to the seat body in the Z-axis direction, the seat body is provided with a limiting rib located at the bottom of the C-shaped member, the seat body has a receiving hole, the receiving hole has a first hole opening facing the C-shaped member and a second hole opening opposite to the first hole opening, the diameter of the first hole opening is greater than the diameter of the second hole opening, and the transmission block is arranged in the receiving hole and is adapted to the shape of the receiving hole.

[0024] By adopting the technical scheme, since the first orifice is oriented towards the C-shaped member, the diameter of the first orifice is larger than that of the second orifice, and the C-shaped member is slidingly connected to the seat body along the Z-axis direction, on the one hand, the connecting seat can follow the synchronous movement of the adjusting rod in the Y-axis direction through the transmission block, and on the other hand, the assembly difficulty of the transmission block is reduced, thereby reducing the production difficulty of the measuring tool; in addition, since the seat body is provided with the limiting rib at the bottom of the C-shaped member, the limiting rib can support the C-shaped member in the Z-axis direction, thereby increasing the stability of the roughness measuring instrument.

[0025] Optionally, the top of each of the two clamping plates opposite sides is provided with a clamping portion capable of abutting against the C-shaped member, and the bottom of each of the two clamping plates opposite sides is provided with a blocking rib.

[0026] By adopting the technical scheme, since the bottom of each of the two clamping plates opposite sides is provided with the clamping portion, the clamping portion can be used to abut against the top of the C-shaped member to position the clamping plate, thereby avoiding the separation of the clamping plate from the C-shaped member in the Z-axis direction, reducing the installation difficulty of the roughness measuring instrument, and improving the installation efficiency of the roughness measuring instrument on the measuring tool; in addition, since the bottom of each of the two clamping plates opposite sides is provided with the blocking rib, the blocking rib can support the roughness measuring instrument in the Z-axis direction, thereby increasing the stability of the roughness measuring instrument.

[0027] Optionally, the two opposite sides of the C-shaped member are provided with at least two threaded adjusting holes, each of the threaded adjusting holes is threadedly connected with an adjusting bolt, and each of the two clamping plates opposite sides is provided with a plurality of positioning blind holes capable of accommodating the adjusting bolt along the Z-axis direction.

[0028] By adopting the technical scheme, when the roughness measuring instrument is installed, the roughness measuring instrument is first placed in the clamping space, and then the adjusting bolt is screwed, so that the screw rod of the adjusting bolt moves towards the direction of the clamping plate, so that the screw rod of the adjusting bolt extends into the positioning blind hole and clamps and fixes the roughness measuring instrument by applying pressure to the bottom wall of the positioning blind hole; when the roughness measuring instrument is adjusted in the Z-axis direction, the adjusting bolt is first screwed, so that the screw rod of the adjusting bolt moves away from the clamping plate, so that the screw rod of the adjusting bolt is withdrawn from the positioning blind hole, and then the clamping plate is adjusted in the Z-axis direction, so that the clamping plate moves the roughness measuring instrument in the Z-axis direction; when the roughness measuring instrument moves to the required position in the Z-axis direction, the adjusting bolt is screwed in the opposite direction, so that the screw rod of the adjusting bolt extends into the corresponding positioning blind hole and applies pressure to the bottom wall of the positioning blind hole, and finally the clamping plate is re-fixed, so as to complete the adjustment of the roughness measuring instrument in the Z-axis direction.

[0029] By adopting the technical scheme, the application has the following beneficial effects:

[0030] 1.The measuring tool in the application comprises a rack and an adjusting assembly, the adjusting assembly comprises a sliding piece, a Y-axis adjusting structure arranged on the sliding piece, a connecting seat arranged on the Y-axis adjusting structure, and clamping plates arranged on the connecting plate, the clamping plates are oppositely arranged, a clamping space for clamping the roughness measuring instrument is formed between the two clamping plates, the clamping plates can move relative to the connecting seat in the Z-axis direction, the Y-axis adjusting structure is used to drive the connecting seat to move in the Y-axis direction, the sliding piece is slidably connected to the rack in the X-axis direction, thereby realizing the measurement of the crankshaft hole roughness of the crankshaft on the engine body, on the one hand, compared with the measurement of the roughness of the crankshaft hole by the staff holding the roughness measuring instrument, the efficiency of the measurement of the roughness of the crankshaft hole is improved and the measurement accuracy is improved, on the other hand, compared with sending the crankshaft to the fixed detection position, the workload of the staff is reduced, the efficiency of the measurement of the roughness of the crankshaft hole is also improved, the need to set up a professional measurement site is avoided, thereby reducing the cost of the measurement of the roughness of the crankshaft hole, and simplifying the operation steps when measuring the roughness of the crankshaft hole.

[0031] 2.The sliding piece in the application comprises a sliding plate and a connecting plate arranged at the end of the sliding plate, a sliding space is formed between the connecting plate and the sliding plate, the rack has a guide rail in the sliding space, the Y-axis adjusting structure is arranged on the sliding plate, thereby when adjusting the roughness measuring instrument in the X-axis direction, the sliding plate is pushed, the connecting plate is driven to move by the sliding plate, and the connecting plate and the guide rail are relatively slid, on the one hand, the sliding cooperation of the connecting plate and the guide rail realizes the guidance of the movement of the sliding piece, on the other hand, the connection of the sliding piece and the rack is realized, and in addition, the structure of the sliding piece is simplified, so as to reduce the production difficulty and the production cost of the measuring tool.

[0032] 3.The rack in the application has a locking rib above the connecting plate, a plurality of threaded holes are arranged at intervals along the length direction of the locking rib, locking bolts are threadedly connected to the threaded holes of the connecting plate in correspondence, the locking bolts have a locking position abutting against the connecting plate and an unlocking position separated from the connecting plate, thereby when adjusting the position of the roughness measuring instrument in the X-axis direction, the locking bolts are first screwed to separate the locking bolts from the connecting plate, that is, the locking bolts are moved from the locking position to the unlocking position, and then the sliding plate is adjusted, so that the sliding plate drives the Y-axis adjusting structure to move in the X-axis direction, the Y-axis adjusting structure drives the connecting seat to move in the X-axis direction, and the connecting seat drives the clamping plates and the roughness measuring instrument to move in the X-axis direction, and when the roughness measuring instrument moves to the required position, the locking bolts are reversely screwed to abut against the connecting plate, that is, the locking bolts are moved from the unlocking position to the locking position, to realize the locking of the sliding piece, thereby increasing the stability of the roughness measuring instrument. Attached Figure Description

[0033] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0034] Figure 1 This is a schematic diagram of the measuring fixture described in one embodiment of this application;

[0035] Figure 2 This is a schematic diagram of the structure of the rack described in one embodiment of this application;

[0036] Figure 3 This is a schematic diagram of the structure of the adjustment component described in one embodiment of this application;

[0037] Figure 4 This is a top view of the adjustment component described in one embodiment of this application;

[0038] Figure 5 This is a schematic diagram of the adjustment component from another perspective in one embodiment of this application;

[0039] Figure 6 This is a cross-sectional view of the adjustment component described in one embodiment of this application.

[0040] Figure label:

[0041] 1. Frame; 11. Side beam; 111. Guide rail; 112. Locking rib; 113. Threaded hole; 12. Fixing plate; 2. Adjustment assembly; 21. Sliding component; 211. Sliding plate; 212. Connecting plate; 213. Extension plate; 22. Y-axis adjustment structure; 221. Support plate; 222. Adjusting rod; 223. Guide rod; 224. Transmission block; 225. Handle; 23. Connecting seat; 231. Seat body; 232. C-shaped component; 233. Limiting rib; 234. Accommodating hole; 235. Threaded adjustment hole; 24. Clamping plate; 241. Clamping space; 242. Overlapping part; 243. Blocking rib; 244. Positioning blind hole. Detailed Implementation

[0042] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0043] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0044] In addition, in the description of the present application, it needs to be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0045] In the present application, unless specifically defined and limited otherwise, the terms "mount", "connect", "connect", "fix", and the like should be broadly understood, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection, can also be communication; 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. 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.

[0046] 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 indirectly contacted through an intermediate medium. In the description of the specification, the description of the terms "embodiment", "example", "one embodiment", "example" or "specific example" 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 specification, the illustrative description of the above terms does not necessarily refer to 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.

[0047] Referring to Figures 1 to 6 , a kind of measurement tool for crankshaft hole roughness measurement is disclosed, it includes rack 1 and adjusting assembly 2, adjusting assembly 2 includes slider 21, Y-axis adjusting structure 22 arranged in slider 21, connecting seat 23 arranged in Y-axis adjusting structure 22 and clamping plate 24 arranged in connecting seat 23, clamping plate 24 is oppositely provided with two pieces, and the clamping space 241 of clamping roughness measuring instrument is formed between the two clamping plates 24, clamping plate 24 can be moved relative to connecting seat 23 along Z-axis direction, Y-axis adjusting structure 22 is used to drive connecting seat 23 to move in Y-axis direction, slider 21 is slidably connected to rack 1 along X-axis direction.

[0048] When the roughness of the crankshaft hole is measured by using the measuring tool in the application, first, the roughness measuring instrument is installed in the clamping space 241 formed between the two clamping plates 24, so as to fix the roughness measuring instrument by the clamping force applied by the two clamping plates 24, then the measuring tool is installed on the joint surface of the engine body and the oil pan, then the slider 21 is adjusted, so that the adjusting assembly 2 drives the roughness measuring instrument to move to the required position in the X-axis direction, then the Y-axis adjusting structure 22 is operated to adjust the connecting seat 23 in the Y-axis direction, so that the roughness measuring instrument moves to the required position in the Y-axis direction, then the clamping plate 24 is adjusted to drive the roughness measuring instrument to move in the Z-axis direction, and finally the stylus of the roughness measuring instrument can be inserted into the crankshaft hole, so as to measure the roughness of the crankshaft hole on the engine body.

[0049] The technical solution in the application reduces the difficulty of measuring the roughness of the crankshaft hole, improves the efficiency of measuring the roughness of the crankshaft hole, and improves the accuracy of the measurement, on the one hand, compared with the staff holding the roughness measuring instrument to measure the roughness of the crankshaft hole, on the other hand, compared with sending the crankshaft to a fixed detection position, reduces the workload of the staff, also improves the efficiency of measuring the roughness of the crankshaft hole, at the same time avoids the need to set up a professional measurement site, thereby reducing the cost of measuring the roughness of the crankshaft hole, and simplifying the operation steps when measuring the roughness of the crankshaft hole.

[0050] In addition, by adjusting the slider 21, the Y-axis adjusting structure 22 and the clamping plate 24, the position of the roughness measuring instrument can be adjusted, so that the fixing of the measuring tool can measure the roughness of multiple crankshaft holes at one time, thereby further improving the efficiency of measuring the roughness of the crankshaft hole.

[0051] In a preferred embodiment, referring to Figure 1 and Figure 2 , the rack 1 includes a side beam 11 extending in the X-axis direction and a fixed plate 12 fixedly connected to both ends of the side beam 11, the fixed plate 12 extends along the Z-axis direction, wherein the side beam 11 is oppositely arranged with two, each fixed plate 12 is L-shaped, and each fixed plate 12 is provided with a through hole at the bottom, so that the measuring tool can be fixedly installed on the engine body by using bolts.

[0052] The structure of the slider 21 in the application is not specifically limited, preferably, referring to Figure 3 , Figure 4 and Figure 5The sliding member 21 comprises a sliding plate 211 and a connecting plate 212 arranged at the end of the sliding plate 211, and a sliding space is formed between the connecting plate 212 and the sliding plate 211. The rack 1 is provided with a guide rail 111 in the sliding space, and the Y-axis adjusting structure 22 is arranged on the sliding plate 211.

[0053] It can be understood that the guide rail 111 is fixedly connected to the edge beam 11 and arranged parallel to the X-axis direction to realize the movement of the sliding member 21 in the X-axis direction.

[0054] When the roughness measuring instrument is adjusted in the X-axis direction, the sliding plate 211 is pushed to drive the connecting plate 212 to move, and then the connecting plate 212 and the guide rail 111 slide relative to each other, on the one hand, the sliding cooperation of the connecting plate 212 and the guide rail 111 realizes the guidance of the movement of the sliding member 21, on the other hand, the connection between the sliding member 21 and the rack 1 is realized, and in addition, the structure of the sliding member 21 is simplified to reduce the production difficulty of the measuring tool and reduce the production cost of the measuring tool.

[0055] Specifically, the connecting plate 212 is provided with two connecting plates 212, and the two connecting plates 212 are fixedly connected to the two ends of the sliding plate 211, and each connecting plate 212 is L-shaped to form a sliding space between each connecting plate 212 and the sliding plate 211. The guide rail 111 is provided with two guide rails 111 corresponding to the sliding space, and each guide rail 111 is located in the corresponding sliding space.

[0056] Further, referring to Figure 2 The rack 1 is provided with a locking rib 112 above the connecting plate 212, and a plurality of threaded holes 113 are arranged at intervals along the length direction of the locking rib 112. The locking rib 112 is provided with a locking position abutting against the connecting plate 212 and an unlocking position separated from the connecting plate 212.

[0057] It can be understood that the locking rib 112 is provided with two locking ribs 112 corresponding to the connecting plate 212, and each locking rib 112 is arranged parallel to the X-axis direction and fixedly connected to the edge beam 11. A plurality of threaded holes 113 are arranged at intervals along the X-axis direction, and the locking screw is provided with two locking screws. The two locking screws are threadedly connected to the threaded holes 113 on the two locking ribs 112, that is, when the sliding member 21 is adjusted in the X-axis direction, the locking screw also needs to be adjusted, so that the threaded hole 113 threadedly connected with the locking screw is opposite to the connecting plate 212, to realize the locking of the sliding member 21.

[0058] When the position of the roughness measuring instrument in the X-axis direction is adjusted, the locking bolt is first screwed to separate the locking bolt from the connecting plate 212, that is, the locking bolt is moved from the locking position to the unlocking position, so that the locking bolt is separated from the connecting plate 212, and then the sliding plate 211 is pushed to move the Y-axis adjusting structure 22 in the X-axis direction, the Y-axis adjusting structure 22 drives the connecting seat 23 to move in the X-axis direction, the connecting seat 23 drives the clamping plate 24 and the roughness measuring instrument to move in the X-axis direction, and when the roughness measuring instrument moves to the required position, the locking bolt is separated from the threaded hole 113, and then the locking bolt is threadedly connected to the corresponding threaded hole 113 in the connecting plate 212, and finally the locking bolt abuts against the connecting plate 212, that is, the locking bolt is moved from the unlocking position to the locking position, to lock the sliding piece 21, thereby increasing the stability of the roughness measuring instrument.

[0059] In addition, by providing the locking bolt, the abutting force of the locking bolt on the connecting plate 212 can also be used to eliminate the play between the connecting plate 212 and the guide rail 111, thereby further increasing the stability of the roughness measuring instrument.

[0060] Of course, in other embodiments, a locking bolt is threadedly connected in each threaded hole 113 to avoid the need to adjust the position of the locking bolt, thereby improving the adjustment efficiency of the roughness measuring instrument in the X-axis direction.

[0061] Further, the distance between the two adjacent threaded holes 113 is less than the width of the connecting plate 212, so that the locking bolt can lock the connecting plate 212 in any position, thereby increasing the flexibility of the roughness measuring instrument in the X-axis direction, and ensuring that the roughness measuring instrument can measure more positions of the crankshaft hole.

[0062] It should be noted that the width of the connecting plate 212 refers to the dimension of the connecting plate 212 in the direction parallel to the X-axis.

[0063] Further, the Y-axis adjusting structure 22, the connecting seat 23 and the clamping plate 24 are located on the side of the sliding plate 211, so that the roughness measuring instrument and the sliding plate 211 form an avoidance in the Z-axis direction, to ensure the adjustment range of the roughness measuring instrument in the Z-axis direction, thereby ensuring the flexibility of the measuring tool.

[0064] Further, referring to Figure 2 and Figure 4 , the guide rail 111 has a starting end and an opposite end, the rack 1 has a first end and a second end opposite to the first end, the end abuts against the second end, the starting end is spaced apart from the first end and the distance therebetween is L, the width of the adjusting assembly 2 is D, and L and D satisfy: L≥D.

[0065] It can be understood that one end of the guide rail 111 abuts against one of the fixed plates 12, the other end of the guide rail 111 is spaced apart from the other fixed plate 12, and the distance between the two is L, and the width of the adjusting assembly 2 refers to the size of the adjusting assembly 2 in the direction parallel to the X axis.

[0066] Since L≥D, the space between the beginning end of the guide rail 111 and the first end of the rack 1 is formed, which can accommodate the installation of the adjusting assembly 2, thereby achieving the effect of facilitating the installation of the adjusting assembly 2, reducing the production difficulty of the measuring tool, and ensuring the adjustment range of the roughness measuring instrument in the X axis direction, thereby ensuring the flexibility of the measuring tool.

[0067] In other embodiments, the sliding member 21 comprises a mounting plate and a sliding block fixedly connected to the mounting plate, the Y axis adjusting structure 22 is arranged on the mounting plate, the edge beam 11 of the rack 1 constitutes a guide beam, and the sliding block is sleeved outside the guide beam to realize the movement of the sliding plate 211 in the X axis direction.

[0068] In a preferred embodiment, referring to Figures 3 to 6 , the Y axis adjusting structure 22 comprises a support plate 221 arranged on the sliding member 21, an adjusting rod 222 threadedly connected to the support plate 221, and a guide rod 223 penetrating through the support plate 221, the guide rod 223 is arranged parallel to the adjusting rod 222 and is fixedly connected to the connecting seat 23, and the end of the adjusting rod 222 away from the support plate 221 is provided with a transmission block 224 located inside the connecting seat 23.

[0069] It can be understood that the adjusting rod 222 and the guide rod 223 are arranged parallel to the Y axis direction.

[0070] When adjusting the roughness measuring instrument in the Y axis direction, the adjusting rod 222 is rotated, and the adjusting rod 222 and the support plate 221 are relatively rotated, since the adjusting rod 222 is threadedly connected to the support plate 221 and the guide rod 223 penetrates through the support plate 221, the adjusting rod 222 drives the transmission block 224 to move in the Y axis direction, the connecting seat 23 moves in the Y axis direction under the action of the transmission block 224, and the connecting seat 23 drives the clamping plate 24 and the roughness measuring instrument to move in the Y axis direction, thereby realizing the adjustment of the roughness measuring instrument in the Y axis direction; through the arrangement of the guide rod 223, the movement of the connecting seat 23 in the Y axis direction can be guided, and the phenomenon that the connecting seat 23 rotates synchronously with the adjusting rod 222 can be prevented, thereby ensuring the adjustment efficiency of the roughness measuring instrument in the Y axis direction and increasing the stability of the roughness measuring instrument.

[0071] Specifically, referring to Figure 3 and Figure 5The bottom of the sliding plate 211 is fixedly connected with an extension plate 213, and the support plate 221 is fixedly connected to the side of the extension plate 213.

[0072] Preferably, referring to Figure 3 and Figure 6 The end of the adjusting rod 222 away from the transmission block 224 is provided with a handle 225, which is perpendicular to the adjusting rod 222 and is screw-connected to the adjusting rod 222. On the one hand, this facilitates the assembly of the handle 225, and on the other hand, it reduces the difficulty of screwing the adjusting rod 222, thereby improving the adjusting efficiency of the roughness measuring instrument in the Y-axis direction.

[0073] The application does not make specific limitations on the connection mode of the transmission block 224 and the adjusting rod 222. Preferably, the adjusting rod 222 is provided in the transmission block 224, and the transmission block 224 is provided with a pin shaft that penetrates the adjusting rod 222, so as to increase the connection stability of the adjusting rod 222 and the transmission block 224. In other embodiments, the adjusting rod 222 can also be screw-connected to the transmission block 224.

[0074] The application does not make specific limitations on the connection mode of the guide rod 223 and the connecting seat 23. Preferably, the guide rod 223 is screw-connected to the connecting seat 23, so as to reduce the assembly difficulty of the guide rod 223 and improve the production efficiency of the measuring tool. In other embodiments, the guide rod 223 can also be connected to the connecting seat 23 by welding or other fixing modes.

[0075] Further, referring to Figure 3 , Figure 4 and Figure 6 The connecting seat 23 comprises a seat body 231 and a C-shaped member 232 slidingly connected to the seat body 231 along the Z-axis direction. The seat body 231 is provided with a limiting rib 233 located at the bottom of the C-shaped member 232. The seat body 231 has a receiving hole 234, which has a first aperture facing the C-shaped member 232 and a second aperture opposite to the first aperture. The diameter of the first aperture is larger than that of the second aperture. The transmission block 224 is arranged in the receiving hole 234 and is adapted to the shape of the receiving hole 234.

[0076] Since the first aperture faces the C-shaped member 232, and the diameter of the first aperture is larger than that of the second aperture, and the C-shaped member 232 is slidingly connected to the seat body 231 along the Z-axis direction, on the one hand, the connecting seat 23 can move synchronously with the adjusting rod 222 in the Y-axis direction through the transmission block 224, and on the other hand, the assembly difficulty of the transmission block 224 is reduced, thereby reducing the production difficulty of the measuring tool. In addition, the seat body 231 is provided with the limiting rib 233 located at the bottom of the C-shaped member 232, so that the limiting rib 233 can support the C-shaped member 232 in the Z-axis direction, thereby increasing the stability of the roughness measuring instrument.

[0077] The structure of the accommodating hole 234 is not limited in the present application, and preferably, referring to Figure 6 , the accommodating hole 234 is a stepped hole, and the end of the accommodating hole 234 with a larger hole diameter faces the C-shaped member 232, and the end of the accommodating hole 234 with a smaller hole diameter is away from the C-shaped member 232, and the cross-sectional shape of the transmission block 224 is a stepped shape suitable for the stepped hole. In other embodiments, the hole diameter of the accommodating hole 234 gradually decreases from the C-shaped member 232 to the support plate 221, that is, the cross-sectional shape of the accommodating hole 234 is an isosceles trapezoid, and the cross-sectional shape of the transmission block 224 is a shape suitable for the accommodating hole 234.

[0078] Further, referring to Figures 3 to 6 , the top of the opposite side of each of the two clamping plates 24 is provided with a clamping portion 242 capable of abutting against the C-shaped member 232, so that the clamping portion 242 can be used to abut against the top of the C-shaped member 232 to position the clamping plate 24, thereby avoiding the phenomenon that the clamping plate 24 is separated from the C-shaped member 232 in the Z-axis direction, reducing the installation difficulty of the roughness measuring instrument, and improving the installation efficiency of the roughness measuring instrument on the measuring tool; the bottom of the opposite side of each of the two clamping plates 24 is provided with a blocking rib 243, so that the blocking rib 243 can support the roughness measuring instrument in the Z-axis direction, thereby increasing the stability of the roughness measuring instrument.

[0079] The shape of the clamping portion 242 is not limited in the present application, and preferably, referring to Figures 3 to 6 , the clamping portion 242 is L-shaped, and a limiting space is formed between the clamping portion 242 and the clamping plate 24, and the width of the limiting space is greater than the thickness of the clamping plate 24, which not only realizes the limiting of the clamping plate 24 in the Z-axis direction, but also realizes the limiting of the clamping plate 24 in the direction of moving towards the inside of the C-shaped member 232, thereby avoiding the phenomenon that the clamping plate 24 may be separated from the C-shaped member 232. In other embodiments, the clamping portion 242 can also be a block structure.

[0080] Further, referring to Figure 3 and Figure 5 , the opposite sides of the C-shaped member 232 are each provided with at least two threaded adjusting holes 235, and an adjusting bolt is threadedly connected in each threaded adjusting hole 235, and the opposite side of each of the two clamping plates 24 is provided with a plurality of positioning blind holes 244 capable of accommodating the adjusting bolt in the Z-axis direction.

[0081] When the roughness measuring instrument is installed, first, the roughness measuring instrument is placed in the clamping space 241, then the adjusting bolt is screwed, and then the screw rod of the adjusting bolt moves towards the direction where the clamping plate 24 is located, so that the screw rod of the adjusting bolt extends into the positioning blind hole 244 and clamps and fixes the roughness measuring instrument by applying pressure to the bottom wall of the positioning blind hole 244; when the roughness measuring instrument is adjusted on the Z axis, first, the adjusting bolt is screwed to make the screw rod of the adjusting bolt move away from the clamping plate 24, so that the screw rod of the adjusting bolt is withdrawn from the positioning blind hole 244, then the clamping plate 24 is held and adjusted on the Z axis, so that the clamping plate 24 moves the roughness measuring instrument on the Z axis, and when the roughness measuring instrument moves to the required position on the Z axis, the adjusting bolt is screwed in the opposite direction, so that the screw rod of the adjusting bolt extends into the corresponding positioning blind hole 244 and applies pressure to the bottom wall of the positioning blind hole 244, finally the clamping plate 24 is re-fixed to complete the adjustment of the roughness measuring instrument on the Z axis.

[0082] The places not mentioned in the application can be realized by using or referring to the existing technology.

[0083] Each of the embodiments in the specification is described in a progressive manner, and the same and similar parts between the embodiments can be referred to each other, and each embodiment mainly describes the difference from other embodiments.

[0084] The above only describes the embodiments of the application and is not used to limit the application. Those skilled in the art can make various modifications and changes to the application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the application shall be included in the scope of the claims of the application.

Claims

1. A measurement tool for crankshaft bore roughness measurement, characterized by, The roughness measuring instrument is clamped by two clamping plates (24) oppositely arranged, and a clamping space (241) for clamping the roughness measuring instrument is formed between the two clamping plates (24), the clamping plates (24) can move relative to the connecting seat (23) in the Z-axis direction, the Y-axis adjusting structure (22) is used for driving the connecting seat (23) to move in the Y-axis direction, and the sliding piece (21) is slidably connected to the rack (1) in the X-axis direction.

2. The measurement tool for measuring the roughness of a crankshaft hole according to claim 1, wherein The sliding piece (21) comprises a sliding plate (211) and a connecting plate (212) arranged at the end of the sliding plate (211), a sliding space is formed between the connecting plate (212) and the sliding plate (211), the rack (1) has a guide rail (111) located in the sliding space, and the Y-axis adjusting structure (22) is arranged on the sliding plate (211).

3. The measurement tool for crankshaft bore roughness measurement according to claim 2, wherein The rack (1) has a locking rib (112) located above the connecting plate (212), a plurality of threaded holes (113) are arranged at intervals along the length direction of the locking rib (112), a locking bolt is threadedly connected to the threaded hole (113) corresponding to the connecting plate (212), the locking bolt has a locking position abutting against the connecting plate (212) and an unlocking position separated from the connecting plate (212); Or, a locking bolt is threadedly connected in each threaded hole (113).

4. The measurement tool for crankshaft bore roughness measurement according to claim 3, wherein The distance between adjacent two threaded holes (113) is less than the width of the connecting plate (212).

5. The measurement tool for crankshaft bore roughness measurement according to claim 2, wherein The Y-axis adjusting structure (22), the connecting seat (23) and the clamping plate (24) are located on the side of the sliding plate (211), so that the roughness measuring instrument and the sliding plate (211) form an avoidance in the Z-axis direction.

6. The measurement tool for crankshaft bore roughness measurement according to claim 5, wherein The guide rail (111) has a starting end and an end opposite to the starting end, the rack (1) has a first end and a second end opposite to the first end, the end abuts against the second end, the starting end is arranged at intervals from the first end, and the distance between the starting end and the first end is L, the width of the adjusting assembly (2) is D, and L and D satisfy: L≥D.

7. A measurement tool for use in the measurement of the roughness of a crankshaft bore according to any one of claims 1 to 6, characterized in that The Y-axis adjusting structure (22) comprises a support plate (221) arranged on the sliding piece (21), an adjusting rod (222) threadedly connected to the support plate (221), and a guide rod (223) penetrating through the support plate (221), the guide rod (223) is arranged parallel to the adjusting rod (222) and is fixedly connected to the connecting seat (23), and one end of the adjusting rod (222) away from the support plate (221) is provided with a transmission block (224) located inside the connecting seat (23).

8. The measurement tool for crankshaft bore roughness measurement according to claim 7, wherein The connecting seat (23) comprises a seat body (231) and a C-shaped member (232) connected to the seat body (231) in the Z-axis direction, the seat body (231) is provided with a limiting rib (233) at the bottom of the C-shaped member (232), the seat body (231) has a containing hole (234) with a first aperture towards the C-shaped member (232) and a second aperture opposite to the first aperture, the diameter of the first aperture is larger than that of the second aperture, and the transmission block (224) is arranged in the containing hole (234) and is matched with the shape of the containing hole (234).

9. The measurement tool for crankshaft bore roughness measurement according to claim 8, wherein The top of each of the two clamping plates (24) is provided with a clamping part (242) capable of abutting against the C-shaped member (232), and the bottom of each of the two clamping plates (24) is provided with a blocking rib (243).

10. The measurement tool for crankshaft bore roughness measurement according to claim 8, wherein The C-shaped member (232) is provided with at least two threaded adjusting holes (235) on opposite sides, each threaded adjusting hole (235) is threadedly connected with an adjusting bolt, and each side of the two clamping plates (24) is provided with a plurality of positioning blind holes (244) capable of containing the adjusting bolt in the Z-axis direction.

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