CN102248408A

CN102248408A - Main shaft centrally-mounted numerical control two-end machining machine tool

Info

Publication number: CN102248408A
Application number: CN2011102037399A
Authority: CN
Inventors: 焦延和; 姜真; 钟秀华; 韩立胜; 张明熠
Original assignee: TIANJIN ZHONGHUAN TCOA ELECTRONICS CO Ltd
Current assignee: TIANJIN ZHONGHUAN TCOA ELECTRONICS CO Ltd
Priority date: 2011-07-20
Filing date: 2011-07-20
Publication date: 2011-11-23

Abstract

The invention relates to a main shaft centrally-mounted numerical control two-end machining machine tool, which comprises a machine tool frame, support plates with a cutter holder, cutters, a main shaft box and three servo motors, wherein the cutter is arranged in a cutter frame on the support plates; the three servo motors are connected with the main shaft box and the two support plates by a conveyor belt. In the main shaft centrally-mounted two-end machining machine tool, during machining, workpieces are rotated, the cutters are fixed, the workpieces are machined at two ends simultaneously, and as only one rotary center is formed, the machined surfaces of the two ends have high concentricity.

Description

A kind of main shaft middle numerical control two end machining tools

Technical field

The present invention relates to a kind of machining equipment, particularly a kind of main shaft middle numerical control two end machining tools.

Background technology

At present the processing mode of two end machining tools of main flow has following several: 1. main shaft, install one cutter, and workpiece is stuck in a side, adds man-hour, and workpiece maintains static, and the cutter rotation after one end machines, is unloaded the transposing direction with workpiece, reprocesses the other end;

Two cutters are installed respectively on two main shafts, in the middle of workpiece is stuck in, are added man-hour, workpiece maintains static, and an end cutter advances, and rotation machines the back withdrawing, and other end cutter advances, the rotation processing other end; More than two kinds of processing modes all have a problem: when carrying out two ends processing, formed two pivots, caused the concentricity at workpiece two ends bad, machining accuracy is poor, has not only brought difficulty to later process, and influences the total quality of product.

Summary of the invention

The problem to be solved in the present invention is: main shaft middle two ends processing machine is provided, in the process of carrying out two ends processing, only forms a pivot, the good concentricity at workpiece two ends, machining accuracy height.

Technical scheme of the present invention is: a kind of main shaft middle numerical control two end machining tools, comprise the lathe frame, have supporting plate, cutter, main spindle box and the servomotor of tool rest, cutter is installed in the supporting plate upper tool post, it is characterized in that: described supporting plate and cutter have two covers, be separately positioned on the guide rail at two ends of lathe frame, main spindle box is installed in the centre of two cover cutters, is fixed on the lathe frame; Described servomotor has three, connects main spindle box and two supporting plates by conveyer belt respectively.

Described main spindle box is the metal chamber in a band chamber, in the chamber of main spindle box, comprise a main shaft, two bearings and two bearing plates, two be symmetrical arranged two projectioies on the center line and in a side ring-type pine workpiece pressing plate that the outer balance ring that rises of connecting ring, two attachment screws, two be provided with through hole, several housing screws that are with holddown spring, two ring-type dop pressing plates, two three-jaw spring chucks are set, are arranged on the belt pulley of main shaft one side, the two-way cylinder and the bearing pin of the balance ring that rises outside connecting two; Described main shaft is a hollow shaft, and described two bearing interference fits are arranged on the two ends of the inner chamber of main spindle box, and the main shaft interference fits is inserted in the center of two bearings; Bearing plate is screwed the outside at bearing; Described two balance rings that rise outward are two metal rings, and two connecting ring positions of two balance ring one sides that rise outward are staggered, and bearing pin inserts in the connecting ring, two balance rings that rise are outward made hinge-type connect; Two piston rods of two-way cylinder are fixedly connected on the opposite side of two balance rings that rise outward; Described loose workpiece pressing plate is arranged on the outside of the outer balance ring that rises, and the projection that attachment screw passes the through hole on the loose workpiece pressing plate and the balance ring that rises outward is connected on the outer balance ring that rises; Described two three-jaw spring chucks are symmetricly set on the two ends of main shaft inner chamber, and described dop pressure board is connected between three-jaw spring chuck and the loose workpiece pressing plate, and several are with on the uniform annulus that is arranged on the dop pressing plate of the housing screw of holddown spring.

Utilize main shaft middle two end machining tools provided by the invention, add workpiece rotation in man-hour, cutter is fixed, and two ends process simultaneously, have only a pivot, make the two ends machined surface have goodish concentricity.

Description of drawings

Fig. 1 is a Facad structure schematic diagram of the present invention.

Fig. 2 is the cutaway view of main spindle box of the present invention.

Fig. 3 is the side view of main spindle box of the present invention.

The specific embodiment

With reference to figure 1, Fig. 2, Fig. 3, a kind of main shaft middle numerical control two end machining tools, comprise lathe frame 1, have supporting plate 2, cutter 3 and the main spindle box 4 of tool rest 2-1, cutter 3 is installed in the supporting plate 2 upper tool post 2-1, supporting plate 2 and cutter 3 have two covers, be separately positioned on the guide rail at two ends of lathe frame 1, main spindle box 4 is installed in the centre of two cover cutters 3, is fixed on the lathe frame 1; Two supporting plates 2 and main spindle box 4 are respectively by separately servomotor 6 control actions; Main spindle box 4 is the rectangular metal pieces in a band chamber, in the chamber of main spindle box 4, comprise a main shaft 4-1, two bearing 4-2 and two bearing plate 4-3, two outer balance ring 4-4 that rise that on center line, are symmetrical arranged two protruding 4-4-1 and connecting ring 4-4-2 is set in a side, two attachment screw 4-5, two ring-type pine workpiece pressing plate 4-6 that are provided with through hole, several are with the housing screw 4-7 of holddown spring 4-7-1, two ring-type dop pressing plate 4-8, two three-jaw spring chuck 4-9, be arranged on the belt pulley 4-10 of main shaft 4-1 one side, the two-way cylinder 4-11 and the bearing pin 4-12 that connect two balance ring 4-4 that rise outward; Described main shaft 4-1 is a hollow cylinder, and two bearing 4-2 interference fits are arranged on the two ends of the inner chamber of main spindle box 4, and main shaft 4-1 interference fits is inserted in the center of two bearing 4-2; Bearing plate 4-3 is screwed the outside at bearing 4-2; Two balance ring 4-4 that rise outward are two metal rings, and two connecting ring 4-4-2 positions of two balance ring 4-4 one sides that rise outward are staggered, and bearing pin 4-12 inserts among the connecting ring 4-4-2, two balance ring 4-4 that rise are outward made hinge-type connect; Two piston rods of two-way cylinder 4-11 are fixedly connected on the opposite side of two balance ring 4-4 that rise outward; Pine workpiece pressing plate 4-6 is arranged on the outside of the outer balance ring 4-4 that rises, and the protruding 4-4-1 that attachment screw 4-5 passes the through hole on the loose workpiece pressing plate 4-6 and the balance ring 4-4 that rises outward is screwed on the outer balance ring 4-4 that rises; Described two three-jaw spring chuck 4-9 are symmetricly set on the two ends of main shaft 4-1 inner chamber, dop pressing plate 4-8 is stuck between three-jaw spring chuck 4-9 and the loose workpiece pressing plate 4-6, and eight housing screw 4-7 that are with holddown spring 4-7-7 are uniform to be arranged on the annulus of dop pressing plate 4-8.

During processing work, cylinder 4-11 does not work, and under the effect of the holddown spring 4-7-1 on the housing screw 4-7, loose workpiece pressing plate 4-6 inwardly withdrawal does not contact with the balance ring 4-4 that rises outward, and dop pressing plate 4-8 is inside pressing spring dop 4-9 clamping work pieces under spring action; Start the servomotor 6 of main spindle box 4, conveyer belt 4-12 and belt pulley 4-10 drive main shaft 4-1 rotation; Servomotor 6 work of two ends supporting plate drive cutter 2 feeds, and cutter 2 enters workpiece end face to be stopped, and begins processing, machine back main shaft 4-1 and stop operating; Cylinder 4-11 work, the balance ring 4-4 that rises outward outwards moves under the promotion of cylinder 4-11 piston rod, the thrust of cylinder piston rod through outside rise two protruding 4-4-1 on the balance ring 4-4 act on loose workpiece clamping plate 4-6 evenly and make it to extrapolation dop pressing plate 4-8, trip spring dop 4-9, finish the action of workpiece loading and unloading 5, at this moment, the attachment screw 4-5 that connects loose workpiece pressing plate 4-6 and outer balance piston ring 4-4 guarantees that loose workpiece pressing plate 4-6 does not come off.

Claims

1. main shaft middle numerical control two end machining tools, comprise lathe frame (1), have supporting plate (2), cutter (3), main spindle box (4) and the servomotor (6) of tool rest (2-1), cutter (3) is installed in supporting plate (2) upper tool post (2-1), it is characterized in that: described supporting plate (2) and cutter (3) have two covers, be separately positioned on the guide rail at two ends of lathe frame (1), main spindle box (4) is installed in the centre of two cover cutters (3), is fixed on the lathe frame (1); Described servomotor (6) has three, connects main spindle box (4) and two supporting plates (2) by conveyer belt respectively.

2. a kind of main shaft middle as claimed in claim 1 numerical control two end machining tools, it is characterized in that: described main spindle box (4) is the metal chamber in a band chamber, in the chamber of main spindle box (4), comprise a main shaft (4-1), two bearings (4-2) and two bearing plates (4-3), two outer balance rings that rise (4-4) that on center line, are symmetrical arranged two projectioies (4-4-1) and connecting ring (4-4-2) is set in a side, two attachment screws (4-5), two ring-type pine workpiece pressing plates (4-6) that are provided with through hole, several are with the housing screw (4-7) of holddown spring (4-7-1), two ring-type dop pressing plates (4-8), two three-jaw spring chucks (4-9), be arranged on the belt pulley (4-10) of main shaft (4-1) side, the two-way cylinder (4-11) and the bearing pin (4-12) that connect two balance rings (4-4) that rise outward; Described main shaft (4-1) is a hollow shaft, and described two bearings (4-2) interference fits is arranged on the two ends of the inner chamber of main spindle box (4), and main shaft (4-1) interference fits is inserted in the center of two bearings (4-2); Bearing plate (4-3) is screwed the outside at bearing (4-2); Described two balance rings (4-4) that rise outward are two metal rings, two connecting rings (4-4-2) position of two balance ring (4-4) sides that rise outward is staggered, bearing pin (4-12) inserts in the connecting ring (4-4-2), two balance rings (4-4) that rise is outward made hinge-type connect; Two piston rods of two-way cylinder (4-11) are fixedly connected on the opposite side of two balance ring (4-4) that rise outward; Described loose workpiece pressing plate (4-6) is arranged on the outside of outer balance ring (4-4) that rise, and the projection (4-4-1) that attachment screw (4-5) passes the through hole on the loose workpiece pressing plate (4-6) and balance ring (4-4) that rise outward is connected on the outer balance ring (4-4) that rises; Described two three-jaw spring chucks (4-9) are symmetricly set on the two ends of main shaft (4-1) inner chamber, described dop pressing plate (4-8) is connected between three-jaw spring chuck (4-9) and the loose workpiece pressing plate (4-6), and several are with on the uniform annulus that is arranged on dop pressing plate (4-8) of the housing screw (4-7) of holddown spring (4-7-1).