CN214321879U

CN214321879U - Frock is used in bent axle reaming

Info

Publication number: CN214321879U
Application number: CN202023177699.9U
Authority: CN
Inventors: 贺永明; 赵吴博
Original assignee: Chongqing Dawang Crankshaft Machinery Manufacturing Co ltd
Current assignee: Chongqing Dawang Crankshaft Machinery Manufacturing Co ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-10-01
Anticipated expiration: 2030-12-25

Abstract

The utility model relates to a frock is used in bent axle reaming, comprises a workbench, fixed mounting has the disc on the workstation, the disc is provided with 3 recesses along the equipartition, the disc is coaxial to be provided with the blind hole that communicates with the recess, install the lead screw through the bearing rotation in the recess, fixed mounting has driving motor on the disc, driving motor drives the lead screw rotation through drive mechanism; the lead screw is fixedly provided with a support through a nut block, and the support is fixedly provided with a clamping jaw. The utility model has the advantages of simple structure is convenient for carry out the clamping to the bent axle, improves machining precision and machining efficiency, reduces intensity of labour.

Description

Frock is used in bent axle reaming

Technical Field

The utility model relates to a bent axle technical field especially relates to a frock is used in bent axle reaming.

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 crankshaft is subjected to the combined action of centrifugal force of the rotating mass, gas inertia force of periodic variation and reciprocating inertia force, so that the crankshaft is subjected to the action of bending and twisting load. Therefore, the crankshaft is required to have sufficient strength and rigidity, and the surface of the journal needs to be wear-resistant, work uniformly and balance well.

In the production and processing process of the crankshaft, the main journal of the crankshaft needs to be drilled, so that the connection in the later period is facilitated. At present, after the main journal of the crankshaft is drilled, the main journal of the crankshaft needs to be reamed, when the main journal of the crankshaft is clamped at present, the three-jaw chuck is directly adopted for clamping, the centering precision is poor, manual rotation is needed to drive the three-jaw chuck to rotate, the efficiency is low, and the labor intensity is high.

Disclosure of Invention

To the not enough of above-mentioned prior art, the technical problem that this patent application will solve how to provide a simple structure, is convenient for carry out the clamping to the bent axle, improves machining precision and machining efficiency, reduces intensity of labour's frock for the bent axle reaming.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a tool for crankshaft reaming comprises a workbench, wherein a disc is fixedly mounted on the workbench, 3 grooves are uniformly distributed along the disc, blind holes communicated with the grooves are coaxially formed in the disc, a lead screw is rotatably mounted in each groove through a bearing, a driving motor is fixedly mounted on the disc, and the driving motor drives the lead screw to rotate through a transmission mechanism; the lead screw is fixedly provided with a support through a nut block, and the support is fixedly provided with a clamping jaw.

The transmission mechanism comprises a driving bevel gear which is coaxially and rotatably installed in the blind hole, driven bevel gears which are in meshing transmission with the driving bevel gear are fixedly installed at the end parts of the lead screws, a transmission bevel gear is fixedly installed on an output shaft of the driving motor and in meshing transmission with the driving bevel gear, and grooves which are used for containing the driving motor and the transmission bevel gear are formed in the disc.

The disc is fixedly provided with three limiting arc plates through connecting blocks, and a limiting groove for limiting the connecting blocks is formed between every two adjacent limiting arc plates.

The middle of the support is provided with a mounting hole in a penetrating mode, and a photoelectric switch is mounted in the mounting hole.

The gear shaft of the driving bevel gear is connected with the disc through a bearing, and the driving bevel gear, the gear shaft and the disc are provided with a wire passing hole in a penetrating mode.

To sum up, the utility model has the advantages of simple structure is convenient for carry out the clamping to the bent axle, improves machining precision and machining efficiency, reduces intensity of labour.

Drawings

Fig. 1 is a structure schematic diagram of a bent axle frock for reaming.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a schematic view of fig. 2 with the table and limit arc removed.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "upper, lower" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

As shown in fig. 1-3, a crankshaft reaming tool comprises a workbench 1, wherein a disc 2 is fixedly mounted on the workbench, 3 grooves are uniformly formed in the disc, blind holes communicated with the grooves are coaxially formed in the disc, a lead screw 3 is rotatably mounted in each groove through a bearing, a driving motor is fixedly mounted on the disc, and the driving motor drives the lead screw to rotate through a transmission mechanism; the lead screw is fixedly provided with a support 4 through a nut block, and the support is fixedly provided with a clamping jaw 5. Like this, vertically place the main journal of bent axle between 3 clamping jaws, the driving motor action drives the lead screw through drive mechanism and rotates, and the lead screw drives nut piece, support and clamping jaw and removes, carries out the centre gripping to the connecting rod journal of bent axle.

The transmission mechanism comprises a driving bevel gear 6 which is coaxially and rotatably installed in the blind hole, driven bevel gears 7 which are in meshing transmission with the driving bevel gear are fixedly installed at the end parts of the lead screws, a transmission bevel gear is fixedly installed on an output shaft of the driving motor and in meshing transmission with the driving bevel gear, and grooves for containing the driving motor and the transmission bevel gear are formed in the disc. The driving motor drives the transmission bevel gear to rotate, and the transmission bevel gear drives the driven bevel gear to rotate through the driving bevel gear so as to drive the screw rod to rotate.

Wherein, there are three spacing arc boards 9 through connecting block 8 fixed mounting on the disc, constitute between the adjacent spacing arc board 9 and be used for carrying out spacing groove to the connecting block. The clamping precision can be better improved, and the clamping force is borne.

The middle of the support is provided with a mounting hole 10 in a penetrating mode, and a photoelectric switch is mounted in the mounting hole. The connecting rod axle journal of bent axle is placed in the mounting hole, and photoelectric switch detects the signal, transmits for the PLC controller promptly, and the PLC controller received signal and control driving motor action drive the clamping jaw and carry out the centre gripping to the connecting rod axle journal, and after the reaming was accomplished, the lathe received the signal and transmitted for the PLC controller, drives driving motor reversal.

The gear shaft of the driving bevel gear is connected with the disc through a bearing, and the driving bevel gear, the gear shaft and the disc are provided with a wire passing hole in a penetrating mode. The photoelectric switch can be conveniently installed.

The principle is as follows:

the main journal of the crankshaft is vertically placed between the 3 clamping jaws, the driving motor acts, the lead screw is driven to rotate through the transmission mechanism, and the lead screw drives the nut block, the support and the clamping jaws to move so as to clamp the connecting rod journal of the crankshaft.

Finally, it should be noted that: various modifications and alterations of this invention may be made by those skilled in the art without departing from the spirit and scope of this invention. Thus, to the extent that such modifications and variations of the present invention fall within the scope of the present claims and their equivalents, it is intended that the present invention encompass such modifications and variations as well.

Claims

1. The tool for crankshaft reaming is characterized by comprising a workbench, wherein a disc is fixedly mounted on the workbench, 3 grooves are uniformly distributed along the disc, blind holes communicated with the grooves are coaxially formed in the disc, lead screws are rotatably mounted in the grooves through bearings, a driving motor is fixedly mounted on the disc, and the driving motor drives the lead screws to rotate through a transmission mechanism; the lead screw is fixedly provided with a support through a nut block, and the support is fixedly provided with a clamping jaw.

2. The tool according to claim 1, wherein the transmission mechanism comprises a drive bevel gear coaxially rotatably mounted in the blind hole, the end portions of the lead screws are fixedly provided with driven bevel gears in meshing transmission with the drive bevel gear, the output shaft of the driving motor is fixedly provided with a transmission bevel gear in meshing transmission with the drive bevel gear, and the disc is provided with a groove for accommodating the driving motor and the transmission bevel gear.

3. The tool for crankshaft reaming according to claim 1, wherein three limiting arc plates are fixedly mounted on the disc through connecting blocks, and a limiting groove for limiting the connecting blocks is formed between adjacent limiting arc plates.

4. The tool for crankshaft reaming according to claim 1, wherein a mounting hole penetrates through the middle of the support, and a photoelectric switch is mounted in the mounting hole.

5. The tool for crankshaft reaming according to claim 2, wherein a gear shaft of the drive bevel gear is connected with the disc through a bearing, and a line passing hole is formed in the drive bevel gear, the gear shaft and the disc in a manner of right penetrating through the gear shaft and the disc.