CN-122007941-A - Auxiliary supporting device for milling key grooves of shaft parts of combustion engines

CN122007941ACN 122007941 ACN122007941 ACN 122007941ACN-122007941-A

Abstract

The invention belongs to the technical field of milling, and particularly relates to an auxiliary supporting device for milling a key slot of a shaft part of a combustion engine, which comprises a workbench and an auxiliary supporting component, wherein the auxiliary supporting component comprises a base, a connecting rod, an annular part, a supporting plate, rollers and a fastening part, the connecting rod is inserted into the base, the annular part is rotationally connected to the upper side of the base, the supporting plate is fixedly connected to the top of the connecting rod, the pair of rollers are rotationally connected to the top of the supporting plate, a connecting groove is formed in one side of the connecting rod, and the fastening part is in threaded connection with the top of the base. The supporting height of the shaft parts is accurately adjusted, so that the machining precision of key grooves is effectively improved, milling force in the machining process is resisted, bending deformation of the long shaft parts is prevented, a pair of rollers are adopted as supporting points, the parts can easily and flexibly rotate around the axes of the parts in a supporting state, rapid and accurate multi-angle indexing can be realized without disassembly, the process flow is simplified, and the machining efficiency is improved.

Inventors

CHEN ZHIQIANG
YAN CHUNMING
CUI LINA
XIE FUQIANG
QI HUIBIN

Assignees

黑龙江华强动力有限公司

Dates

Publication Date: 20260512
Application Date: 20260407

Claims (10)

1. The auxiliary supporting device for milling the key slot of the shaft part of the combustion engine is characterized by comprising a workbench (1) and an auxiliary supporting component; The auxiliary supporting components are used for supporting the workpiece (2) and adjusting the angle of the workpiece, and the number of the auxiliary supporting components is two and are arranged on the surface of the workbench (1); The auxiliary supporting component comprises a base (3), a connecting rod (4), an annular piece (5), a supporting plate (6), a roller (7) and a fastening piece (8); The novel connecting device is characterized in that a connecting rod (4) is inserted into the base (3), an annular piece (5) is rotatably connected to the upper side of the base (3), the annular piece (5) is sleeved on the surface of the connecting rod (4) and is detachably connected with the connecting rod, a supporting plate (6) is fixedly connected to the top of the connecting rod (4), a pair of rollers (7) are rotatably connected to the top of the supporting plate (6), a connecting groove (9) is formed in one side of the connecting rod (4), a fastening piece (8) is detachably connected to the top of the base (3), and the end portion of the fastening piece (8) is inserted into the connecting groove (9).
2. The auxiliary supporting device for milling the key slot of the shaft part of the combustion engine is characterized in that a supporting frame (10) is fixedly connected to the surface of the supporting plate (6), a guide sleeve (11) is fixedly connected to the top of the supporting frame (10), a guide post (12) is detachably connected to the inside of the guide sleeve (11), and a pressing block (13) is fixedly connected to the bottom of the guide post (12).
3. The auxiliary supporting device for milling the key slot of the shaft part of the combustion engine is characterized in that a sliding groove (14) is formed in the surface of the workbench (1), a pair of sliding seats (15) are connected inside the sliding groove (14) in a sliding mode, the base (3) is fixedly connected with the sliding seats (15) respectively, an adjusting rod (16) is connected inside the workbench (1) in a rotating mode, the adjusting rod (16) penetrates through the pair of sliding seats (15) and is connected with the sliding seats through a screw-nut pair, and a hand wheel (17) is fixedly connected to the end portion of the adjusting rod (16).
4. The auxiliary supporting device for milling key grooves of shaft parts of a combustion engine, as set forth in claim 3, is characterized in that the directions of threads at two ends of the adjusting rod (16) are opposite.
5. The auxiliary supporting device for milling key grooves of parts of a combustion engine shaft according to claim 3, wherein the bottom of the chute (14) is an inclined plane, and an inclined slag discharging groove (18) is formed between the bottom of the inclined plane and the outer side of the workbench (1).
6. The auxiliary supporting device for milling the key slot of the shaft part of the combustion engine, which is disclosed in claim 3, is characterized in that a key slot cleaning assembly is arranged on the surface of the workbench (1), and is used for removing metal scraps in the key slot of the workpiece (2) after milling, and comprises a mounting plate (19), an electric telescopic rod (20), a supporting block (21) and an elastic wire (22); The surface of the mounting plate (19) is fixedly connected with an electric telescopic rod (20), the output end of the electric telescopic rod (20) is connected with a supporting block (21), and a group of elastic wires (22) are uniformly distributed on the upper side of the supporting block (21).
7. The auxiliary supporting device for milling the key slot of the shaft part of the combustion engine, which is disclosed in claim 6, is characterized in that a sliding block (23) is fixedly connected to the lower side of the mounting plate (19), the sliding block (23) is slidably connected to the inside of the sliding groove (14), and fastening columns (24) are detachably connected to two ends of the mounting plate (19).
8. The auxiliary supporting device for milling the key slot of the shaft part of the combustion engine is characterized in that an air cavity (25) is formed in the supporting block (21), an air inlet (26) is formed in one side of the supporting block (21), and a group of air outlet holes (27) are uniformly distributed in the top of the supporting block (21).
9. The auxiliary supporting device for milling the key slot of the shaft part of the combustion engine is characterized in that an air guide ring (28) is fixedly connected inside the air outlet hole (27), a blocking ball (30) is fixedly connected to the upper side of the air guide ring (28) through a spring (29), and elastic wires (22) are fixedly connected to the top of the blocking ball (30).
10. The auxiliary supporting device for milling the key slot of the shaft part of the combustion engine is characterized in that a rotating shaft (31) is rotatably connected inside the air cavity (25), a group of poking sheets (32) are uniformly distributed on the surface of the rotating shaft (31), an elastic rod (33) is fixedly connected to the bottom of the plugging ball (30), and the elastic rod (33) extends into the air cavity (25) through an air guide ring (28).

Description

Auxiliary supporting device for milling key grooves of shaft parts of combustion engines Technical Field The invention belongs to the technical field of milling, and particularly relates to an auxiliary supporting device for milling a key slot of a shaft part of a fuel machine. Background The gas turbine is a rotary impeller type heat engine which uses continuously flowing gas as working medium and converts chemical energy of fuel into mechanical work, and is widely applied to the fields of industrial power generation, ship power, mechanical driving and the like. The shafting system is a core component for realizing power transmission and rotary motion of the gas turbine, and in the manufacturing process of shaft parts of the gas turbine, key slot milling is used as a key process for realizing precise torque transmission of parts such as a rotor, an impeller, a coupler and the like, and the machining quality of the key process directly influences the assembly precision and the dynamic stability of the whole shafting. Therefore, key groove processing on the shaft parts of the fuel machine is particularly important, and good shaft part key groove processing equipment plays a vital role in improving key groove processing efficiency and key groove processing precision. One patent of China patent application CN201693381U discloses a clamping and pressing device for solving the problem that a rear shaft of a common gantry milling machine is too large in bending, and the technical scheme is characterized in that V-shaped blocks are respectively supported below key grooves at two ends of the shaft, two sides of each V-shaped block are respectively connected with side baffles, free cushion blocks are placed at neutral positions between the V-shaped blocks and the side baffles, two 7-shaped weights are symmetrically arranged at two sides of each V-shaped block in a connecting mode by using adjusting bolts, the upper ends of the two 7-shaped weights respectively press two sides of the key grooves of the shaft, the lower end of each 7-shaped weight is tightly pressed on the free cushion blocks, a jacking adjusting bolt for jacking the 7-shaped weight is arranged on each side baffle, an adjustable jack is arranged between the two V-shaped blocks and used for jacking the lower part of the middle of the shaft, and the upper part of the middle of the shaft is lapped with the weight. In the prior art, a V-shaped iron is usually adopted to be matched with a jack or a fixed supporting device for positioning during processing of key grooves of shaft parts of a combustion engine, but in practical application, the defects that the height of a workpiece is difficult to finely adjust in a traditional supporting mode, the adjustment process of the parallelism of the axis of the workpiece and a workbench is complicated and difficult to ensure, the processing quality of the key grooves is directly influenced, the bending deformation of the workpiece is easily caused by insufficient supporting rigidity under the action of milling force to influence the processing stability during processing of long-axis workpieces, in addition, the flexible rotation of the workpiece cannot be realized by the existing supporting device when the workpiece is required to be processed in the circumferential direction, an operator can finish multi-angle key groove processing only by repeatedly disassembling and clamping the workpiece, the process flow is complex, the efficiency is low, positioning errors are easily introduced by repeated clamping, the indexing precision among the key grooves is difficult to ensure, and the assembly quality and the service performance of the workpiece are influenced. Therefore, the invention provides an auxiliary supporting device for milling key grooves of parts such as a shaft of a combustion engine. Disclosure of Invention In order to overcome the deficiencies of the prior art, at least one technical problem presented in the background art is solved. The technical scheme adopted by the invention for solving the technical problems is that the auxiliary supporting device for milling the key slot of the shaft part of the burner comprises a workbench and an auxiliary supporting component; The auxiliary supporting components are used for supporting the workpiece and adjusting the angle of the workpiece, and the number of the auxiliary supporting components is two and are arranged on the surface of the workbench; The auxiliary supporting component comprises a base, a connecting rod, an annular piece, a supporting plate, rollers and a fastening piece; The connecting rod is inserted into the base, the annular piece is connected to the upper side of the base in a rotating mode, the annular piece is sleeved on the surface of the connecting rod and is in threaded connection with the connecting rod, the top of the connecting rod is fixedly connected with the supporting plate, the top of the supporting plate is connected with a pair