Numerical control bilateral milling machine

Abstract

A numerical control double-side milling machine comprises side milling machines on the two sides, and each side milling machine comprises a rack, a spindle box arranged at the top of the rack and slidably connected with the rack, a cutterhead arranged at the front end of the spindle box and a driving mechanism driving the spindle box to move. The length of the spindle box is larger than that of the machine frame, a sliding rail is arranged at the bottom of the spindle box, and a sliding block matched with the sliding rail is arranged at the top of the machine frame. As the length of the spindle box is larger than that of the rack, the distance of the cutter head extending out of the spindle box is shortened on the premise of meeting the machining requirement of a small-size workpiece, namely, the length of the spindle in the spindle box is reduced, the rigidity of the spindle is increased, and the machining stability is improved; in the machining state, the end, connected with the cutter head, of the spindle box is a cantilever, machined scrap iron cannot fall on the rack, operation of the sliding rail cannot be affected, and a dust cover does not need to be arranged; when the whole double-side milling machine needs to be transported, the spindle box can slide inwards and contract, the width of the two sides of the double-side milling machine is further reduced, and transportation convenience is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical processing equipment technical field especially a numerical control double side milling machine. BACKGROUND

[0002] Double side milling machine generally includes the workbench and sets up in the workbench both sides side milling machine, processes, through the feed of side milling machine to the workpiece in the middle machining. Such as Chinese patent publication number CN204843628U a kind of double side face positioning device for milling machine, install in milling machine ontology, including the first positioning plate and second positioning plate of positioning workpiece, the first positioning plate includes the first main positioning surface of the side face of positioning workpiece, the second positioning plate includes the second main positioning surface of the adjacent side face another end positioned in the first main positioning surface positioning side face. The length of the rack of this kind of side milling machine is greater than the length of top spindle box, in order to process the requirement of small size workpiece, the length of cutter disc that stretches out on spindle box is longer, leading to its processing stability is poor. In addition, the length of rack cannot be changed, leading to the overall width of double side milling machine is larger, is not conducive to transportation. SUMMARY

[0003] The utility model solves the technical problem existing in prior art.

[0004] To solve the above technical problem, the technical scheme of the utility model is: a numerical control double side milling machine, including bed, workbench set in the middle of bed and side milling machine set in the both sides of workbench, the side milling machine includes rack, spindle box set in the top of rack and with its sliding connection, cutter disc set in the front end of spindle box and drive mechanism driving spindle box to move. The length of the spindle box is greater than the length of the rack, the bottom of the spindle box is provided with slide rail, and the top of the rack is provided with sliding block matched with the slide rail. The utility model principle: because the length of spindle box is greater than the length of rack, under the premise of meeting the demand of small size workpiece processing, the distance of cutter disc stretching out of spindle box is shortened, i.e. the length of main shaft in spindle box is smaller, the rigidity of main shaft is increased, thereby improving the processing stability. In the processing state, the end of spindle box connected with cutter disc is cantilevered, and the iron filings generated in processing will not fall on the rack, and will not affect the operation of slide rail, so there is no need to set dust cover. When the whole double side milling machine needs to be transported, the spindle box can be slid inward to shrink, further reducing the width of the both sides of double side milling machine, and improving the convenience of transportation.

[0005] As an improvement, the bottom of the spindle box is provided with wire slot on both sides, and the slide rail is arranged in the wire slot.

[0006] As an improvement, the slide rail is a linear guide rail.

[0007] As an improvement, the length of the slide rail is the same as the length of the spindle box.

[0008] As improvement, the two sides of the side milling machine are provided with pressing mechanisms between the frame and the spindle box.

[0009] As improvement, the pressing mechanism comprises a first pressing plate arranged between the frame and the spindle box on one side of the side milling machine, a second pressing plate arranged between the frame and the spindle box on the other side of the side milling machine and a hydraulic cylinder fixed on the first pressing plate, the hydraulic cylinder is connected with a pull rod, the pull rod passes through the first pressing plate and is connected with the second pressing plate.

[0010] As improvement, the driving mechanism comprises a driving motor arranged at the rear end of the spindle box, a nut arranged at the top of the frame and a screw rod matched with the nut, the rear end of the spindle box is provided with a bearing seat below the driving motor, one end of the screw rod is connected with a passive synchronous pulley through the bearing seat, the output shaft of the driving motor is connected with a driving synchronous pulley, and the driving synchronous pulley and the passive synchronous pulley are connected through a synchronous belt.

[0011] As improvement, the spindle box comprises a box body, a spindle arranged in the box body and a spindle motor arranged at the top of the box body, the spindle motor drives the cutter head through the spindle.

[0012] As improvement, the bottom of the frame is provided with a mounting hole, and the frame is fixed on the bed through bolts.

[0013] The utility model discloses compared with prior art brings beneficial effect is:

[0014] Because the length of the spindle box is greater than the length of the frame, under the premise of meeting the processing demand of small -size workpiece, the distance of cutter head that stretches out the spindle box is shortened, i.e. the length of the spindle in the spindle box is smaller, the rigidity of the spindle is increased, thereby improving the processing stability, under the processing state, the end of spindle box and cutter head connection is cantilevered, the iron filings of processing will not fall on the frame, will not affect the operation of slide rail more, need not set up dust cover, when needing to the whole machine transportation of double -sided milling machine, the spindle box can slide inwards and contract, further reduce the width of the two sides of double -sided milling machine, improve the convenience of transportation. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is side milling machine side view.

[0016] Figure 2 It is side milling machine rear end view. DETAILED DESCRIPTION

[0017] The utility model makes further explanation below combining with the drawing of specification.

[0018] As Figure 1 , 2The utility model discloses a numerical control double side milling machine, including the bed, the worktable of being arranged on the bed and the side milling machine of being arranged at the both sides of worktable. The side milling machine includes frame 2, the main shaft box 1 of being arranged at the top of frame 2 and with its sliding connection, the cutter head 3 of being arranged at the front end of main shaft box 1 and the drive mechanism of driving main shaft box 1 movement. The main shaft box 1 is horizontal, and the length L1 of main shaft box 1 is greater than the length L2 of frame 2, when frame 2 is in the middle of main shaft box 1, both ends of main shaft box 1 are suspended. The bottom both sides of frame 2 are equipped with mounting hole, and the side of frame 2 is excavated groove and is communicated with mounting hole, and frame 2 is locked on the bed through bolt, and by adjusting the position of frame 2, the position error of cutter head 3 can be eliminated. The bottom both sides of main shaft box 1 are equipped with wire slot, and the slide rail 8 is arranged in wire slot, and the length of slide rail 8 is same with the length of main shaft box 1, and slide rail 8 is fixed on main shaft box 1 through bolt, and slide rail is arranged on main shaft box 1 and is located in wire slot, so that slide rail can be better protected. The top both sides of frame 2 are respectively equipped with two slide blocks 9 matched with slide rail 8, and slide block 9 is fixed on frame 2 through bolt, and slide block 9 is relatively stationary during work, and slide rail 8 moves back and forth relative to slide block 9. The slide rail 8 is linear guide rail, which reduces the processing difficulty of main shaft box 1 on the one hand, and improves the precision of main shaft box 1 sliding on the other hand. The both sides of side milling machine are equipped with the pressure mechanism between frame and main shaft box 1, and the pressure mechanism can lock the position of main shaft box 1.The driving mechanism comprises a driving motor 4 arranged at the rear end of the main shaft box 1, a nut arranged at the top of the frame 2 and a screw rod matched with the nut; the rear end of the main shaft box 1 is provided with a mounting groove, and the driving motor 4 is arranged in the mounting groove, so that the length of the main shaft box 1 can be shortened; the rear end of the main shaft box 1 is provided with a bearing seat 6 below the driving motor 4, the bearing seat 6 is integrally formed with the main shaft box 1, and a bearing is arranged in the bearing seat 6; the screw rod is arranged at the middle position below the main shaft box 1, one end of the screw rod penetrating through the nut, and the other end of the screw rod penetrating through the bearing seat 6 is connected with a passive synchronous pulley 7; the output shaft of the driving motor 4 is connected with a driving synchronous pulley 5, the driving synchronous pulley 5 and the passive synchronous pulley 7 are connected through a synchronous belt, the driving motor drives the screw rod to rotate, the screw rod moves forward and backward relative to the nut, so as to drive the main shaft box 1 to move forward and backward.

[0019] The utility model principle: because the length of main shaft box 1 is greater than the length of frame 2, satisfy the prerequisite of small -size work piece processing demand, the distance of cutter head 3 that stretches out main shaft box 1 is shortened, namely the length of the main shaft in main shaft box 1 is smaller, increased the rigidity of main shaft, to improve the processing stability, under the processing state, the one end of main shaft box 1 and cutter head 3 is cantilevered, the iron filings of processing will not fall on frame 2, even more will not influence the operation of slide rail, need not to set dust cover, when needing to the double -sided milling machine whole machine transportation, main shaft box 1 can inboard sliding contraction, further reduce the width of both sides of double -sided milling machine, improve the convenience of transportation.

Claims

1. A numerical control double side milling machine, comprising a bed, a worktable arranged in the middle of the bed and side milling machines arranged on both sides of the worktable, the side milling machine comprising a frame, a spindle box arranged on the top of the frame and in sliding connection with the frame, a cutter head arranged at the front end of the spindle box and a driving mechanism for driving the movement of the spindle box; characterized in that: The length of the spindle box is greater than the length of the frame, the bottom of the spindle box is provided with a slide rail, and the top of the frame is provided with a sliding block matched with the slide rail.

2. The numerically controlled double-sided milling machine according to claim 1, characterized in that: The bottom of the spindle box is provided with wire grooves on both sides, and the slide rail is arranged in the wire grooves.

3. The numerically controlled double side milling machine according to claim 1, wherein: The slide rail is a linear guide rail.

4. The numerically controlled double-sided milling machine according to claim 1, characterized in that: The length of the slide rail is the same as the length of the spindle box.

5. The numerically controlled double-sided milling machine according to claim 1, characterized in that: The side milling machine is provided with a pressing mechanism between the frame and the spindle box on both sides.

6. The numerically controlled double-sided milling machine according to claim 5, characterized in that: The pressing mechanism comprises a first pressing plate arranged between the frame and the spindle box on one side of the side milling machine, a second pressing plate arranged between the frame and the spindle box on the other side of the side milling machine, and a hydraulic cylinder fixed on the first pressing plate, the hydraulic cylinder is connected with a pull rod, the pull rod passes through the first pressing plate and is connected with the second pressing plate.

7. The numerically controlled double-sided milling machine according to claim 1, characterized in that: The driving mechanism comprises a driving motor arranged at the rear end of the spindle box, a nut arranged at the top of the frame, and a screw rod matched with the nut, the rear end of the spindle box is provided with a bearing seat below the driving motor, one end of the screw rod passes through the bearing seat and is connected with a passive synchronous pulley, the output shaft of the driving motor is connected with a driving synchronous pulley, and the driving synchronous pulley and the passive synchronous pulley are connected through a synchronous belt.

8. The numerically controlled double-sided milling machine according to claim 1, characterized in that: The spindle box comprises a box body, a spindle arranged in the box body, and a spindle motor arranged at the top of the box body, the spindle motor drives the cutter head through the spindle.

9. The numerically controlled double-sided milling machine according to claim 1, characterized in that: The bottom of the frame is provided with a mounting hole, and the frame is fixed on the bed through bolts.

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