CN-121670362-B - Turning and milling composite high-precision numerical control machine tool for shaft parts

Abstract

The invention relates to the technical field of machine tools, in particular to a turning and milling composite high-precision numerical control machine tool for shaft parts, which comprises a main shaft mechanism, a turning mechanism, a milling mechanism and a guide rail; the main shaft mechanism comprises a main shaft clamp, the turning mechanism and the milling mechanism are both provided with supporting mechanisms, the turning mechanism comprises a turning linear module and a turning unit arranged at the movable end of the turning linear module, the milling mechanism comprises a milling linear module and a milling unit arranged at the movable end of the milling linear module, the supporting mechanism comprises a supporting sliding seat, a clamping seat and a linkage rod, one end of the supporting sliding seat is connected to a guide rail in a sliding manner, one end of the clamping seat is sleeved on the supporting sliding seat in a sliding manner, the other end of the clamping seat is provided with a clamping jaw, one end of the linkage rod is arranged at the movable end of the turning linear module or the milling linear module, and the other end of the linkage rod is in transmission connection with the clamping seat. Therefore, the clamping jaw moves synchronously with the position of the cutter in the turning and milling process, the machining stability and the coaxiality precision are improved, and the high-precision machining requirement of milling composite machining is met.

Inventors

• LIU ERHUI

Assignees

• 广东中聪智能装备有限公司

Dates

Publication Date

20260505

Application Date

20260210

Claims (8)

1. 1. The turning and milling composite high-precision numerical control machine tool for the shaft parts is characterized by comprising two spindle mechanisms, a turning mechanism, a milling mechanism and a guide rail, wherein the spindle mechanisms are arranged on a machine tool table in a relatively sliding manner; Each spindle mechanism comprises a spindle clamp for clamping a shaft blank workpiece, wherein the turning mechanism and the milling mechanism are both provided with supporting mechanisms, the turning mechanism comprises a turning linear module and a turning unit arranged at the movable end of the turning linear module, and the milling mechanism comprises a milling linear module and a milling unit arranged at the movable end of the milling linear module; Each supporting mechanism comprises a supporting sliding seat, a clamping seat and a linkage rod; the clamping device comprises a guide rail, a supporting slide seat, a clamping seat, a linkage rod, a clamping jaw, a turning linear module, a milling linear module, a linkage rod and a clamping seat, wherein one end of the supporting slide seat is slidably connected to the guide rail; The support sliding seat is internally provided with a linkage box, a first cavity and a second cavity are respectively arranged in the linkage box, a first piston push rod which divides the first cavity into a first rodless cavity and a first rod cavity is arranged in the first cavity, the first piston push rod is fixedly connected with the other end of the linkage rod, a second piston push rod which divides the second cavity into a second rodless cavity and a second rod cavity is arranged in the second cavity, the second piston push rod is fixedly connected with one end of the clamping seat, the first rodless cavity is communicated with the second rod cavity, and the linkage rod and the clamping seat are synchronously linked under the action of the first piston push rod and the second piston push rod; The support sliding seat is internally provided with a buffer box, a valve plate is arranged in the buffer box, a buffer cavity is formed by enclosing one side of the valve plate and the inner wall of the buffer box, one side of the buffer box, which is close to the linkage box, is provided with an inlet and an outlet which are communicated with the first rodless cavity, the inlet is internally provided with an overflow valve, the outlet is internally provided with a one-way valve, and a spring is connected between the other side of the valve plate and the inner wall of the buffer box; The movement direction of the turning unit and the milling unit is perpendicular to the movement direction of the spindle mechanism.
2. 2. The turning and milling composite high-precision numerical control machine tool for shaft parts, which is disclosed in claim 1, is characterized in that the number of the springs is two, and the two springs are arranged side by side at intervals.
3. 3. The turning and milling composite high-precision numerical control machine tool for shaft parts is characterized in that a mounting hole is formed in the supporting sliding seat in a penetrating mode, the linkage box is fixedly arranged in the mounting hole, an avoidance hole is formed in the mounting hole in a penetrating mode, a connecting boss is arranged at the other end of the linkage rod in a protruding mode, and the connecting boss is fixedly connected with the first piston push rod after penetrating through the avoidance hole.
4. 4. The turning and milling composite high-precision numerical control machine tool for shaft parts is characterized in that a sliding hole is formed in one end of a clamping seat in a penetrating mode, the clamping seat is sleeved on a supporting sliding seat through the sliding hole, first sliding tables are arranged on two sides of the sliding hole in a protruding mode, the first sliding tables are arranged in mounting holes in a sliding mode, and the second piston push rod is fixedly connected with the corresponding first sliding tables.
5. 5. The turning and milling composite high-precision numerical control machine tool for shaft parts according to claim 1, wherein two clamping jaws are arranged at the other end of the clamping seat at intervals.
6. 6. The turning and milling composite high-precision numerical control machine tool for shaft parts, which is disclosed in claim 5, is characterized in that a connecting rod is movably arranged at the other end of the clamping seat, the middle part of the connecting rod is hinged with the clamping seat, and the two clamping jaws are respectively hinged at two ends of the connecting rod correspondingly.
7. 7. The turning and milling composite high-precision numerical control machine tool for shaft parts, which is disclosed in claim 6, is characterized in that the clamping jaw comprises a clamping arm and two clamping balls, one end of the clamping arm is hinged with the connecting rod, and the two clamping balls are distributed at intervals and respectively correspond to the balls to be connected with the other end of the clamping arm.
8. 8. The turning and milling composite high-precision numerical control machine tool for shaft parts, which is disclosed in claim 1, is characterized in that one end of the supporting sliding seat is convexly provided with a second sliding table, the guide rail is provided with a sliding groove, and the second sliding table is slidingly arranged in the sliding groove.

Description

Turning and milling composite high-precision numerical control machine tool for shaft parts Technical Field The invention relates to the technical field of machine tools, in particular to a turning and milling composite high-precision numerical control machine tool for shaft parts. Background When the shaft parts are processed on the turning and milling composite numerical control machine tool, a plurality of working procedures such as turning and milling are usually required to be completed under the condition of one clamping, and particularly when the long and thin shaft parts are processed, deflection and vibration are easy to generate due to the dead weight and the cutting force in the cutting process. The existing turning and milling compound machine tool mainly adopts a fixed center frame or a tailstock to support a workpiece, the supporting position of the fixed center frame or the tailstock is relatively fixed, and the fixed center frame or the tailstock is difficult to synchronously adjust along with the change of the machining position of a cutter along the axial feeding direction, so that a cantilever section is formed between the machining position of the cutter and a supporting point, the machining stability, the surface quality and the coaxiality precision are affected, and the compound machining requirement of high-precision shaft parts is difficult to meet. Disclosure of Invention The invention aims to overcome the defects and provide a turning and milling composite high-precision numerical control machine tool for shaft parts. In order to achieve the above object, the present invention is specifically as follows: The turning and milling combined high-precision numerical control machine tool for the shaft parts comprises a machine cover, a machine tool table arranged on the machine cover, two spindle mechanisms arranged on the machine tool table in a sliding manner, a turning mechanism and a milling mechanism which are arranged on the machine tool table side by side and are arranged between the two spindle mechanisms, and a guide rail arranged between the two spindle mechanisms, wherein the turning mechanism and the milling mechanism are arranged on the machine tool table in a sliding manner; Each spindle mechanism comprises a spindle clamp for clamping a shaft blank workpiece, wherein the turning mechanism and the milling mechanism are both provided with supporting mechanisms, the turning mechanism comprises a turning linear module and a turning unit arranged at the movable end of the turning linear module, and the milling mechanism comprises a milling linear module and a milling unit arranged at the movable end of the milling linear module; each supporting mechanism comprises a supporting sliding seat, a clamping seat and a linkage rod, one end of the supporting sliding seat is connected to the guide rail in a sliding mode, one end of the clamping seat is sleeved on the supporting sliding seat in a sliding mode, a clamping jaw is arranged at the other end of the clamping seat, one end of the linkage rod is arranged at the movable end of the turning linear module or the milling linear module, the other end of the linkage rod is in transmission connection with the clamping seat, and when the movable end of the turning linear module or the milling linear module drives the linkage rod to move linearly, the linkage rod synchronously drives the clamping seat to drive the clamping jaw to move oppositely or move oppositely. In some embodiments, a linkage box is arranged in the support sliding seat, a first cavity and a second cavity are respectively arranged in the linkage box, a first piston push rod which divides the first cavity into a first rodless cavity and a first rod cavity is arranged in the first cavity, the first piston push rod is fixedly connected with the other end of the linkage rod, a second piston push rod which divides the second cavity into a second rodless cavity and a second rod cavity is arranged in the second cavity, the second piston push rod is fixedly connected with one end of the clamping seat, the first rodless cavity is communicated with the second rod cavity, and the linkage rod and the clamping seat are synchronously linked under the action of the first piston push rod and the second piston push rod. In some embodiments, a buffer box is further arranged in the support sliding seat, a valve plate is arranged in the buffer box, a buffer cavity is formed by enclosing one side of the valve plate and the inner wall of the buffer box, an inlet and an outlet which are communicated with the first rodless cavity are formed in one side, close to the linkage box, of the buffer box, an overflow valve is arranged in the inlet, a one-way valve is arranged in the outlet, and a spring is connected between the other side of the valve plate and the inner wall of the buffer box. In some embodiments, the number of the springs is two, and the two springs are arranged side by side at inte