CN216179957U

CN216179957U - Manufacturing tool jig for small-eccentricity crankshaft

Info

Publication number: CN216179957U
Application number: CN202122727069.2U
Authority: CN
Inventors: 程早阳; 徐守平
Original assignee: Anlu Huayu Wiremesh Machinery Manufacturing Co ltd
Current assignee: Anlu Huayu Wiremesh Machinery Manufacturing Co ltd
Priority date: 2021-11-09
Filing date: 2021-11-09
Publication date: 2022-04-05
Anticipated expiration: 2031-11-09

Abstract

The utility model provides a tool for manufacturing a crankshaft with small eccentricity. Little eccentricity crankshaft's preparation frock tool includes: the tool comprises a crankshaft, a crankshaft neck is arranged on the crankshaft, center holes are formed in the two ends of the crankshaft, threaded holes are formed in the two sides of the center holes in the two ends of the crankshaft, movable center hole fixtures are arranged in the center holes and comprise fixture bodies. According to the tool for manufacturing the crankshaft with the small eccentricity, the tool body is arranged in the eccentric round bottom openings at the two ends of the crankshaft and is pressed tightly by the screws, the crankshaft with the small eccentricity can be conveniently machined, equipment does not need to be replaced during operation, the operation steps of the whole device are simplified, the use is convenient, the tool is closer to that of a traditional crankshaft machining method, and workers can grasp and accept the machining method more easily.

Description

Manufacturing tool jig for small-eccentricity crankshaft

Technical Field

The utility model relates to the field of crankshaft machining, in particular to a tool for manufacturing a crankshaft with a small eccentricity.

Background

The crankshaft is the most important component in the engine. It takes the force from the connecting rod and converts it into torque to be output by the crankshaft and drive other accessories on the engine.

The existing crankshaft manufacturing method is to process 2 equal-distance and same-distance center holes at two ends of a crankshaft respectively; one group of the center holes are concentric with the crankshaft neck and are used for processing the crankshaft neck; the other group is concentric with the crankshaft and is used for processing the crankshaft.

However, the existing crankshaft manufacturing tool cannot simultaneously process 2 center holes with correction on the same end surface when a crankshaft with a small eccentricity is processed, so that the manufacturing tool needs to be replaced when the crankshaft with the small eccentricity needs to be processed, and the operation steps are complex and inconvenient to use.

Therefore, it is necessary to provide a tooling fixture for manufacturing a crankshaft with a small eccentricity to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a tool jig for manufacturing a crankshaft with small eccentricity, which solves the problem that the existing tool jig for manufacturing the crankshaft is not suitable for the crankshaft with small eccentricity.

In order to solve the technical problem, the utility model provides a tool for manufacturing a crankshaft with small eccentricity, which comprises:

the tool comprises a crankshaft, a crankshaft neck is arranged on the crankshaft, center holes are formed in the two ends of the crankshaft, threaded holes are formed in the two sides of the center holes in the two ends of the crankshaft, movable center hole fixtures are arranged in the center of the center holes and comprise fixture bodies, auxiliary center holes are formed in the middles of the interior of the fixture bodies, and assembling holes are formed in the peripheries of the auxiliary center holes in the interior of the fixture bodies.

Preferably, preparation frock tool subassembly adds man-hour and need use the bent axle subassembly that punches, the bent axle subassembly that punches includes the under casing, rotate through the bearing between the both sides of under casing inner wall and be connected with the dwang, the equal fixedly connected with screw thread portion in both sides of flexible dwang surface, the surface threaded connection of screw thread portion has the screw thread piece, the top fixedly connected with transfer line of screw thread piece, the top of transfer line runs through the under casing and extends to the top of under casing, the one end fixedly connected with puncher that the transfer line extends to the under casing top.

Preferably, the top fixedly connected with link of under casing, the top fixedly connected with pneumatic cylinder of link inner wall, the output fixedly connected with bent axle centre gripping subassembly of pneumatic cylinder.

Preferably, the crankshaft clamping assembly comprises a rectangular plate, a circular groove is formed in the rectangular plate, a first arc-shaped clamping plate fixedly connected with an extrusion spring is arranged on one side of the inner wall of the circular groove, and a screw rod is connected to the inner thread of the rectangular plate.

Preferably, one end of the screw rod penetrates through the circular groove and extends to the inside of the circular groove, and one end of the screw rod extending to the inside of the circular groove is rotatably connected with the second arc-shaped clamping plate through a bearing.

Preferably, the outside of the connecting frame is connected with the sound-proof cover in a sliding mode through a sliding block.

Preferably, the sound-proof housing and the connecting frame are limited through a screw rod.

Preferably, the one end of dwang runs through the under casing and extends to the outside of under casing, the dwang extends to the outside one end fixedly connected with handle of under casing.

Compared with the prior art, the tool for manufacturing the crankshaft with the small eccentricity has the following beneficial effects:

the utility model provides a tool for manufacturing a crankshaft with small eccentricity, which is characterized in that a tool body is arranged in eccentric round bottom openings at two ends of the crankshaft and is tightly pressed by screws, so that the crankshaft with small eccentricity can be conveniently processed, equipment does not need to be replaced during operation, the operation steps of the whole device are simplified, the device is convenient to use, and the device is closer to the traditional crankshaft processing method, and workers can easily master and accept the processing method.

Drawings

Fig. 1 is a schematic structural view of a first embodiment of a tooling fixture for manufacturing a crankshaft with a small eccentricity, provided by the utility model;

FIG. 2 is a three-dimensional view of the partial structure shown in FIG. 1;

FIG. 3 is a schematic structural view of a second embodiment of a tooling fixture for manufacturing a crankshaft with a small eccentricity according to the present invention;

FIG. 4 is a cross-sectional view of the partial structure shown in FIG. 3;

FIG. 5 is a side view of the crankshaft clamp assembly shown in FIG. 4.

Reference numbers in the figures:

1. manufacturing a tooling jig assembly, 11, a crankshaft, 12, a crankshaft neck, 13, a tip hole, 14, a movable tip hole jig, 141, a jig body, 142, an auxiliary tip hole, 143 and an assembling hole;

2. crankshaft perforating assembly, 21, bottom case, 22, rotating rod, 23, thread part, 24, thread block, 25, transmission rod, 26, perforating machine, 27, connecting frame, 28, hydraulic cylinder, 29, crankshaft clamping assembly, 291, rectangular plate, 292, circular groove, 293, first arc-shaped clamping plate, 294, screw rod, 295, second arc-shaped clamping plate, 210, sound-proof housing, 211, screw rod, 212, handle.

Detailed Description

The utility model is further described with reference to the following figures and embodiments.

First embodiment

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a tooling fixture for manufacturing a crankshaft with a small eccentricity according to a first embodiment of the present invention; fig. 2 is a three-dimensional view of the partial structure shown in fig. 1. The utility model provides a preparation frock tool of little eccentricity bent axle, includes:

preparation frock tool subassembly 1, preparation frock tool includes bent axle 11, be provided with bent axle neck 12 on the bent axle 11, apex hole 13 has all been seted up to the inside at bent axle 11 both ends, the inside at bent axle 11 both ends and the both sides that are located apex hole 13 all set up threaded hole, the inside of apex hole 13 is provided with movable apex hole tool 14, activity apex hole tool 14 includes tool body 141, the inside centre of tool body 141 is provided with supplementary apex hole 142, the inside of tool body 141 and the periphery that is located supplementary apex hole 142 are provided with pilot hole 143.

The crankshaft 11 and the movable center hole jig 14 are used in a matched mode, when the movable center hole jig 14 is used, the movable center hole jig 14 can be installed in the eccentric round bottom openings at the two ends of the crankshaft 11 and is pressed tightly through screws, a worker can conveniently process the crankshaft with small eccentricity by arranging the movable center hole jig 14, and the operation steps are simple and rapid.

The working principle of the first embodiment of the tool jig for manufacturing the crankshaft with the small eccentricity provided by the utility model is as follows:

when in use, two ends of the crankshaft 11 are respectively provided with a tip hole 13, and the tip holes 13 are concentric with the original bar material of the crankshaft 11 and used for lathing and grinding the shaft;

meanwhile, two sections of ends of the crankshaft 11 are respectively milled with a positioning eccentric round bottom port, the round bottom ports are eccentric with the top pin hole of the crankshaft 11, and more than two threaded holes are arranged in the eccentric round bottom ports;

the jig body 141 is in a shape of a circular cake, the excircle of the jig body is in slightly tight sliding fit with the positioning circular bottom opening of the crankshaft 11, an auxiliary tip hole 142 is formed in the middle of the jig body, and assembling holes 143 are formed in the periphery of the tip hole 142;

the jig body 141 is installed in the eccentric round bottom ports at both ends of the crankshaft 11 and is compressed by screws, and the auxiliary center hole 142 on the jig body 141 is used for turning and grinding the crankshaft neck.

the utility model provides a tool for manufacturing a crankshaft with small eccentricity, which is characterized in that a tool body 141 is arranged in eccentric round bottom openings at two ends of a crankshaft 11 and is pressed tightly by screws, so that the crankshaft with small eccentricity can be conveniently processed, equipment does not need to be replaced during operation, the operation steps of the whole device are simplified, the use is convenient, and the tool is closer to the traditional crankshaft processing method, and workers can easily master and accept the processing method.

Second embodiment

Referring to fig. 3 to 5, a second embodiment of the present application provides another tool for manufacturing a crankshaft with a small eccentricity based on the tool for manufacturing a crankshaft with a small eccentricity provided in the first embodiment of the present application. The second embodiment is only the preferred mode of the first embodiment, and the implementation of the second embodiment does not affect the implementation of the first embodiment alone.

Specifically, the difference that the preparation frock tool of the little eccentricity crankshaft that the second embodiment of this application provided lies in: make frock tool subassembly 1 and need use the bent axle subassembly 2 that punches man-hour, bent axle subassembly 2 that punches includes under casing 21, rotate through the bearing between the both sides of under casing 21 inner wall and be connected with dwang 22, the equal fixedly connected with screw thread portion 23 in both sides of flexible dwang 22 surface, the surface screw thread connection of screw thread portion 23 has screw thread piece 24, the top fixedly connected with transfer line 25 of screw thread piece 24, the top of transfer line 25 runs through under casing 21 and extends to the top of under casing 21, the one end fixedly connected with puncher 26 at under casing 21 top is extended to transfer line 25.

The crankshaft clamping assembly 29 is powered by an external power source.

The top fixedly connected with link 27 of under casing 21, the top fixedly connected with pneumatic cylinder 28 of link 27 inner wall, the output fixedly connected with bent axle centre gripping subassembly 29 of pneumatic cylinder 28.

The crankshaft clamping assembly 29 comprises a rectangular plate 291, a circular groove 292 is formed in the rectangular plate 291, a first arc-shaped clamping plate 293 is fixedly connected to one side of the inner wall of the circular groove 292 through an extrusion spring, and a screw rod 294 is connected to the inner thread of the rectangular plate 291.

Through the setting of bent axle centre gripping subassembly 29, can treat the bent axle that punches and carry out effective spacing to precision when can guaranteeing to punch conveniently improves the quality of product.

One end of the screw rod 294 penetrates the circular groove 292 and extends into the circular groove 292, and one end of the screw rod 294 extending into the circular groove 292 is rotatably connected with the second arc-shaped clamping plate 295 through a bearing.

The second arc-shaped holding plate 295 is used in cooperation with the first arc-shaped holding plate 293.

The outside of the connecting frame 27 is slidably connected with a soundproof cover 210 through a sliding block.

The soundproof cover 210 and the connecting frame 27 are limited by a screw 211.

The screw 211 is provided with a nut, and the soundproof cover 210 can be conveniently limited by the matching of the nut, wherein the soundproof cover 210 is made of high-quality rock wool.

One end of the rotating rod 22 penetrates through the bottom case 21 and extends to the outside of the bottom case 21, and the rotating rod 22 extends to one end fixedly connected with a handle 212 outside the bottom case 21.

The inside of handle 212 is provided with the locating lever, through the setting of locating lever, can effectively avoid handle 212 to take place the reversal.

The working principle of the second embodiment of the tool jig for manufacturing the crankshaft with the small eccentricity provided by the utility model is as follows:

when the device is used, the sound insulation cover 210 can slide upwards, the screw 211 is used for limiting the sound insulation cover 210, at the moment, the crankshaft to be punched penetrates through the circular groove 292 in the rectangular plate 291, when the crankshaft reaches the central position, the screw 294 is rotated, and when the screw 294 rotates, the screw 294 indirectly drives the second arc-shaped clamping plate 295 to move through the thread transmission effect, so that the crankshaft to be punched can be fixed;

after the fixing is finished, the hydraulic cylinder 28 is driven again to enable the crankshaft to move downwards, the handle 212 is rotated again to enable the rotating rod 22 to rotate, the two threaded parts 23 on the rotating rod 22 are indirectly driven to rotate when the rotating rod 22 rotates, the two threaded blocks 24 can be indirectly driven to move in the same direction or in the opposite direction through the thread transmission effect as the threads on the outer surfaces of the two threaded parts 23 are two sections with opposite rotation directions, the perforating machine 26 can be indirectly driven to move through the transmission rod 25 through the movement of the threaded blocks 24, and when the handle 212 is moved to a working position, the handle 212 can be limited through the positioning rod;

after the adjustment is finished, the nut on the screw 211 is rotated, the limit on the sound-proof shield 210 is removed, the sound-proof shield 210 moves downwards, and finally the punching machine 26 is driven, so that the punching work can be finished, the noise generated during punching can be reduced through the arrangement of the sound-proof shield 210, the working environment of workers can be conveniently purified, and the operation of the workers is facilitated;

after the punching is finished, the sound insulation cover 210 can be upwards slid, the screw 211 is used for limiting the sound insulation cover 210, finally, the handle 212 is reversely rotated, so that the two punching machines 26 reversely move, and then the screw rod 294 is reversely rotated, so that the machined crankshaft can be taken out;

the utility model provides a tool for manufacturing a crankshaft with small eccentricity, which can conveniently punch the crankshaft by arranging the crankshaft punching assembly 2, and can effectively reduce the noise generated during crankshaft punching by arranging the sound-proof cover 210 outside the connecting frame 27, thereby purifying the working environment of workers and being convenient to use.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a preparation frock tool of little eccentricity crankshaft which characterized in that includes:

2. The tool for manufacturing the crankshaft with the small eccentricity according to claim 1, wherein the tool for manufacturing the crankshaft needs to be used for the crankshaft punching assembly during machining, the crankshaft punching assembly comprises a bottom box, a rotating rod is rotatably connected between two sides of the inner wall of the bottom box through a bearing, threaded portions are fixedly connected to two sides of the outer surface of the telescopic rotating rod, threaded blocks are connected to outer surface threads of the threaded portions, a transmission rod is fixedly connected to the tops of the threaded blocks, the top end of the transmission rod penetrates through the bottom box and extends to the top of the bottom box, and a punching machine is fixedly connected to one end, extending to the top of the bottom box, of the transmission rod.

3. The tool jig for manufacturing the small-eccentricity crankshaft according to claim 2, wherein a connecting frame is fixedly connected to the top of the bottom box, a hydraulic cylinder is fixedly connected to the top of the inner wall of the connecting frame, and a crankshaft clamping assembly is fixedly connected to the output end of the hydraulic cylinder.

4. The tool jig for manufacturing the crankshaft with the small eccentricity as claimed in claim 3, wherein the crankshaft clamping assembly comprises a rectangular plate, a circular groove is formed in the rectangular plate, a first arc-shaped clamping plate is fixedly connected to one side of the inner wall of the circular groove through an extrusion spring, and a lead screw is connected to the inner thread of the rectangular plate.

5. The tool jig for manufacturing the small-eccentricity crankshaft according to claim 4, wherein one end of the screw rod penetrates through the circular groove and extends into the circular groove, and a second arc-shaped clamping plate is rotatably connected to one end of the screw rod extending into the circular groove through a bearing.

6. The tool for manufacturing the small-eccentricity crankshaft according to claim 3, wherein a sound-proof shield is slidably connected to the outside of the connecting frame through a sliding block.

7. The tool for manufacturing the small-eccentricity crankshaft according to claim 6, wherein the sound-proof housing and the connecting frame are limited by screws.

8. The tool for manufacturing the small-eccentricity crankshaft according to claim 2, wherein one end of the rotating rod penetrates through the bottom box and extends to the outside of the bottom box, and a handle is fixedly connected to one end of the rotating rod, which extends to the outside of the bottom box.