CN216177023U

CN216177023U - Double-body double-head double-groove keyway planer

Info

Publication number: CN216177023U
Application number: CN202122479864.4U
Authority: CN
Inventors: 龙迎春
Original assignee: Dongguan Zhaolong Machinery And Equipment Co ltd
Current assignee: Dongguan Zhaolong Machinery And Equipment Co ltd
Priority date: 2021-10-14
Filing date: 2021-10-14
Publication date: 2022-04-05
Anticipated expiration: 2031-10-14

Abstract

The utility model relates to the technical field of machining, in particular to a double-body double-head double-groove planer, wherein a plurality of working tables are arranged on a base of the lathe, a plurality of groups of tool bit assemblies which can move in the direction of X, Y, Z shafts and are mutually matched in a linkage manner are arranged on an upper guide rail seat, the tool bit mechanism can be freely adjusted in the direction of X, Y, Z shafts, synchronous machining operation of grooving in a plurality of groove positions, different depths or the same depth of a machined workpiece can be simultaneously realized, and meanwhile, a press foot mechanism which can move in a linkage manner and can be controlled in a split manner is adopted.

Description

Double-body double-head double-groove keyway planer

Technical Field

The utility model relates to the technical field of machining, in particular to a double-body double-head double-groove keyway planer.

Background

The grooving is a previous process of metal workpieces needing circular arc radius or right-angle bending, the grooving is finished by a grooving machine, the existing grooving machine comprises a single-head grooving machine, a double-head grooving machine and a four-head grooving machine, no matter the grooving machine is a grooving machine with two cutter heads or four cutter heads, the positions between the cutter heads are generally fixed, namely the cutter heads can only be adjusted up and down and left and right, and can not be adjusted front and back, the cutter head with the structure can only realize grooving in one moving process, or can realize grooving with two unadjustable distances, and is not suitable for workpieces with different grooving requirements, in order to solve the problems, the grooving machine with the adjustable cutter head distance gradually appears on the market, one cutter head is fixed, the other cutter head can move back and forth according to requirements, but because one cutter head is fixed, the double-groove processing range is small, for the workpieces needing to be provided with a plurality of grooves, a plurality of grooves can not be simultaneously formed, and the position of a workpiece needs to be continuously moved, so that the problem of low working efficiency is caused.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, an object of the present invention is to provide a router capable of simultaneously machining two workpieces with the same specification while ensuring the machining accuracy of the router, wherein two slots with the same specification can be drilled on each workpiece after one machining cycle, that is, four slots can be machined in one machining cycle, so that the number of equipment purchases and operators are reduced, the equipment placement space is reduced, and great help is provided for cost saving.

The utility model realizes the purpose by the following technical scheme:

a double-body double-head double-groove planer comprises a machine tool base, wherein an upper guide rail seat is fixed above the machine tool base through side plates arranged at two ends of the machine tool base respectively, X-axis guide rails are arranged on two sides of the upper guide rail seat in parallel, a working table is arranged on the machine tool base in parallel, side pressure plate mechanisms used for pressing the side edges of workpieces to be machined are arranged on the side edges of the working table respectively, end pressure plate mechanisms used for pressing the side edges of the workpieces to be machined are arranged at the end portions of the working table, a tool bit mechanism is arranged on the upper guide rail seat, the tool bit mechanism slides along the X-axis guide rails under the driving of an X-axis motor, and tool bit assemblies which correspond to the working table respectively and are used for grooving the workpieces are arranged on the tool bit mechanism.

The tool bit mechanism comprises a tool bit base, a slider fixing plate matched with an X-axis guide rail is relatively arranged on the upper portion of the tool bit base, a slider is arranged between the slider fixing plate and the X-axis guide rail, a first guide rail component and a second guide rail component which are vertical to the X-axis direction are arranged on the lower portion of the tool bit base, a first tool bit component and a second tool bit component are arranged on the first guide rail component in a sliding mode, a third tool bit component and a fourth tool bit component are arranged on the second guide rail component in a sliding mode, the lower portion of the tool bit base is further provided with a first lead screw component which is used for driving the first tool bit component and the second tool bit component to move along the first guide rail component respectively, and a second lead screw component which is used for driving the third tool bit component and the fourth tool bit component to move along the second guide rail component.

The first guide rail assembly comprises a first Z-axis guide rail and a second Z-axis guide rail which are arranged in parallel, the second guide rail assembly comprises a third Z-axis guide rail and a fourth Z-axis guide rail which are arranged in parallel, the first lead screw assembly is arranged between the first Z-axis guide rail and the second Z-axis guide rail, and the second lead screw assembly is arranged between the third Z-axis guide rail and the fourth Z-axis guide rail.

The first screw rod assembly comprises a first Z-axis screw rod rotationally connected with the first cutter head assembly and a second Z-axis screw rod rotationally connected with the second cutter head assembly, and the first Z-axis screw rod is connected with the second Z-axis screw rod through a first coupler; the second screw rod assembly comprises a third Z-axis screw rod and a fourth Z-axis screw rod, the third Z-axis screw rod is rotatably connected with the third tool bit assembly, the fourth Z-axis screw rod is rotatably connected with the fourth tool bit assembly, and the third Z-axis screw rod is connected with the fourth Z-axis screw rod through a second coupler.

The tool bit base is provided with a first screw rod assembly, a second screw rod assembly, a first Z-axis motor and a second Z-axis motor, wherein the first Z-axis motor and the second Z-axis motor are respectively used for driving the first screw rod assembly, the second screw rod assembly, the first Z-axis motor and the second Z-axis motor are connected through a Z-axis speed reducer and a fourth Z-axis screw rod, the first tool bit assembly, the second tool bit assembly and the fourth tool bit assembly respectively comprise a tool bit base, two groups of tool bits are arranged on the tool bit base in a sliding mode along the Y-axis direction respectively, and Y-axis driving motors used for driving the tool bits to move up and down are respectively arranged on the tool bit base.

The end pressing plate mechanism comprises a base, a guide rail is horizontally arranged on the base, a plurality of pressing foot components are arranged on the guide rail in a sliding mode and comprise a first pressing foot component, a second pressing foot component, a third pressing foot component and a fourth pressing foot component, a first driving component and a second driving component which are used for driving the pressing foot components to slide along the guide rail are further arranged on the base, the first driving component synchronously drives the first pressing foot component and the third pressing foot component to move, the second driving component synchronously drives the second pressing foot component and the fourth pressing foot component to move, and the pressing foot components are provided with pressing feet used for pressing workpieces to be machined.

The first driving assembly comprises a first screw rod assembly and a first driving motor which are horizontally arranged, and the first driving motor is connected with the first screw rod assembly through a first synchronous wheel; the second driving assembly comprises a second screw rod assembly and a second driving motor which are horizontally arranged, and the second driving motor is connected with the second screw rod assembly through a second synchronizing wheel.

Furthermore, the first screw rod assembly comprises a first screw rod and a second screw rod which are horizontally and coaxially arranged, and the first screw rod and the second screw rod are connected through a first coupler; the second screw rod assembly comprises a third screw rod and a fourth screw rod which are horizontally and coaxially arranged, and the third screw rod and the fourth screw rod are connected through a second coupling.

The presser foot component comprises a fixed seat arranged on the guide rail in a sliding mode, a driving oil cylinder is arranged on the fixed seat, and the presser foot moves up and down under the driving of the driving oil cylinder.

The fixed seats of the first presser foot assembly and the third presser foot assembly are respectively connected with the first screw rod and the second screw rod through driving screw rod nuts; and the fixed seats of the second presser foot assembly and the fourth presser foot assembly are respectively connected with the third screw rod and the fourth screw rod through driving screw rod nuts.

The Y-axis driving motor is connected with the cutter head through a Y-axis right-angle steering gear, a Y-axis lead screw coupler and a Y-axis lead screw respectively.

Compared with the prior art, the utility model has the beneficial effects that:

according to the double-body double-head double-groove keyway planer, the plurality of working tables are arranged on the base of the lathe, the plurality of cutter head assemblies which can move in the direction of X, Y, Z shafts and are matched with each other in a linkage manner are arranged on the upper guide rail seat, the cutter head mechanism can be freely arranged in the direction of X, Y, Z shafts, synchronous processing operation of grooving in a plurality of grooves, different depths or the same depth of two identical processing workpieces can be simultaneously realized, meanwhile, the presser foot mechanism which moves in a linkage manner and can be controlled in a split manner is adopted, under the condition that the pressing state and the position of the workpiece are not changed, the automatic requirement of the multi-cutter-head keyway planer in the working process can be met, the grooving working efficiency is greatly improved, and the workpiece processing cost is saved.

Drawings

FIG. 1 is a schematic structural view of a twin-body double-head double-groove router of the present invention.

Fig. 2 is another view structure diagram of the twin-body double-head double-groove keyway planer of the present invention.

Fig. 3 is a schematic view of the structure of the cutter head mechanism in the utility model.

Fig. 4 is a schematic view of another view structure of the cutter head mechanism in the utility model.

Fig. 5 is a schematic structural view of an end platen mechanism according to the present invention.

Fig. 6 is another perspective structural diagram of the end pressing plate mechanism of the present invention.

Fig. 7 is another perspective structural diagram of the end pressing plate mechanism of the present invention.

Fig. 8 is a schematic view of the matching structure of the working table and the end pressing plate mechanism of the present invention.

Detailed Description

The utility model is described in detail below with reference to the figures and the specific embodiments.

Example 1.

As shown in fig. 1-3, the present embodiment provides a dual-body dual-head dual-slot router, which includes a machine base 85, an upper guide rail seat 84 is fixed above the machine tool base 85 through side plates 82(83) arranged at two ends of the machine tool base 85, the two sides of the upper guide rail seat 84 are provided with X-axis guide rails 91(92) in parallel, the machine tool base 85 is provided with a working table surface B1(B2) in parallel, the side edges of the worktable surface B1(B2) are respectively provided with a side pressing plate mechanism A1(A2) for pressing the side edge of the workpiece to be processed, the end part of the working table surface B1(B2) is provided with an end part pressing plate mechanism used for pressing the side edge of the workpiece to be processed, the upper guide rail seat 84 is provided with a cutter head mechanism which slides along an X-axis guide rail 91(92) under the driving of an X-axis motor 80, the tool bit mechanism is provided with tool bit components which respectively correspond to the working table surface B1(B2) and are used for carrying out the planing groove processing on the workpiece.

In the working process, the work pieces to be machined can be respectively placed on the working table surface B1(B2) on the machine tool base 85, then the side edges of the work pieces are respectively pressed and fixed through the side pressing plate mechanisms A1(A2) arranged on the side edges of the working table surface B1(B2), the end parts of the work pieces are pressed and fixed through the end part pressing plate mechanisms arranged at the end parts after the positions to be grooved are selected, and finally the synchronous machining operation of a plurality of grooves and grooves with various different depths is simultaneously carried out on the work pieces through a plurality of groups of tool bit assemblies on the tool bit mechanisms moving along the upper guide rail seat 84; through the presser foot mechanism that can coordinated motion and can split control in the tip pressure plate mechanism, under the condition that keeps work piece compression state position unchangeable, can change the fixed position of presser foot to satisfy the fixed demand that compresses tightly of different fluting positions, satisfy the automatic demand of adjustable multiple-bit tool keyway planer in the working process, improved fluting machining work efficiency greatly, save work piece processing cost.

As shown in fig. 4-5, in this embodiment, the bit mechanism includes a bit base 100, the upper part of the tool bit base 100 is oppositely provided with a slide block fixing plate 87(90) along the X-axis direction, the slide block fixing plate 87(90) is provided with a slide block 89(88), the lower part of the cutter head base 100 is provided with a first guide rail component and a second guide rail component which are vertical to the X-axis direction, the first guide rail component is provided with a first cutter head component and a second cutter head component in a sliding way, the second guide rail component is provided with a third cutter head component and a fourth cutter head component in a sliding way, the lower part of the cutter head base is also provided with a first screw rod component which is respectively used for driving the first cutter head component and the second cutter head component to move along the first guide rail component, and the second screw rod assembly is used for driving the third cutter head assembly and the fourth cutter head assembly to move along the second guide rail assembly.

The tool bit mechanism of this embodiment sets up the guide rail on X, Y, Z axle directions respectively on tool bit base 100, and through setting up four group's tool bit subassemblies of mutual linkage complex, can realize tool bit mechanism at the free adjustment of X, Y, Z axle direction, can realize simultaneously that a plurality of trench, the multiple different degree of depth or the same depth grooved synchronous processing operation to the processing work piece has improved fluting machining work efficiency greatly, saves work piece processing cost.

The first guide rail assembly comprises a first Z-axis guide rail 72 and a second Z-axis guide rail 73 which are arranged in parallel, the second guide rail assembly comprises a third Z-axis guide rail 74 and a fourth Z-axis guide rail 75 which are arranged in parallel, the first screw rod assembly is arranged between the first Z-axis guide rail 72 and the second Z-axis guide rail 73, and the second screw rod assembly is arranged between the third Z-axis guide rail 74 and the fourth Z-axis guide rail 75.

In this embodiment, the tool bit assembly stretches across two Z-axis guide rails arranged in parallel, and the screw rod assembly arranged between the two Z-axis guide rails drives the tool bit assembly to move, so that the stability and firmness of the tool bit assembly in the process of workpiece grooving and position adjustment can be guaranteed, and the workpiece grooving quality can be guaranteed.

The first screw rod assembly comprises a first Z-axis screw rod 42 rotationally connected with the first cutter head assembly and a second Z-axis screw rod 44 rotationally connected with the second cutter head assembly, and the first Z-axis screw rod 42 is connected with the second Z-axis screw rod 44 through a first coupler 43; the second screw rod assembly comprises a third Z-axis screw rod 41 rotationally connected with the third tool bit assembly and a fourth Z-axis screw rod 39 rotationally connected with the fourth tool bit assembly, and the third Z-axis screw rod is connected with the fourth Z-axis screw rod through a second coupler 40.

The lower portion of the tool bit base 100 is further provided with a first Z-axis motor Z1 and a second Z-axis motor Z2 which are respectively used for driving the first lead screw assembly, the second lead screw assembly, the first Z-axis motor Z1 is connected with the second Z-axis lead screw 44 through a Z-axis speed reducer 35, and the second Z-axis motor Z2 is connected with the fourth Z-axis lead screw 39 through a Z-axis speed reducer 36.

Under the drive of a first Z-axis motor Z1, a first cutter head assembly and a second cutter head assembly can be driven to synchronously move along the Z-axis direction through a first Z-axis lead screw 42 and a second Z-axis lead screw 44 which are connected with each other, under the drive of a second Z-axis motor Z2, a third cutter head assembly and a fourth cutter head assembly can be driven to synchronously move along the Z-axis direction through a third Z-axis lead screw 41 and a fourth Z-axis lead screw 39 which are connected with each other, so that the synchronous motion adjustment of the first cutter head assembly to the fourth cutter head assembly is realized, the free adjustment of a cutter head mechanism in the X, Y, Z-axis direction is realized, the synchronous processing operation of slotting a plurality of slots of processed workpieces, different depths or the same depth can be realized simultaneously, the slotting processing working efficiency is greatly improved, and the processing cost of the workpieces is saved.

The first cutter head assembly, the second cutter head assembly and the fourth cutter head assembly respectively comprise cutter head bases 76(77, 78 and 79), two groups of cutter heads are arranged on the cutter head bases 76(77, 78 and 79) in a sliding mode along the Y-axis direction, and Y-axis driving motors 37(38, 45 and 46) used for driving the cutter heads to move up and down are arranged on the cutter head bases respectively.

The Y-axis driving motors 37(38, 45 and 46) are respectively connected with the tool bit through a Y-axis right-angle steering gear 48(49, 50 and 51), a Y-axis lead screw coupler 68(70, 56 and 58) and a Y-axis lead screw, so that the tool bit can be accurately adjusted in the Y-axis direction, and the requirement of precision control in the workpiece grooving process is met.

When the tool is in operation, the first tool bit assembly and the second tool bit assembly are driven by the first screw rod assembly to move synchronously along the first Z-axis screw rod 42 and the second Z-axis screw rod 44 which are arranged in parallel, the third cutter head component and the fourth cutter head component move synchronously along a third Z-axis screw rod 41 and a fourth Z-axis screw rod 39 which are arranged in parallel under the driving of the second screw rod component, and each cutter head Y1(Y2, Y3, Y4, Y5, Y6, Y7 and Y8) moves up and down along a cutter head base 76(77, 78 and 79) under the driving of a Y-axis driving motor 37(38, 45 and 46) to realize the operation control of cutter feeding and cutter retracting, so that the free adjustment of the cutter head mechanism in the X, Y, Z axis direction is realized, the synchronous processing operation of slotting a plurality of slots, different depths or the same depth of a processed workpiece can be realized simultaneously, the slotting processing work efficiency is greatly improved, and the processing cost of the workpiece is saved.

As shown in fig. 6-8, in the present embodiment, the end platen mechanism includes a base 30, a guide rail 7 is horizontally disposed on the base 30, a plurality of presser foot assemblies including a first presser foot assembly, a second presser foot assembly, a third presser foot assembly and a fourth presser foot assembly are slidably disposed on the guide rail 7, a first driving assembly and a second driving assembly for driving the presser foot assemblies to slide along the guide rail 7 are further disposed on the base 30, respectively, the first driving assembly synchronously drives the first presser foot assembly and the third presser foot assembly to move, the second driving assembly synchronously drives the second presser foot assembly and the fourth presser foot assembly to move, and the presser foot assembly is provided with a presser foot 1(2, 3, 4) for pressing a workpiece to be processed.

The end pressing plate mechanism of the embodiment adopts the pressing plate mechanism which is in linkage motion and can be controlled in a split mode, under the condition that the position of a workpiece in a pressing state is kept unchanged, the automatic requirement in the working process of the adjustable multi-cutter-head slot planer can be met, and the workpiece slot planing and cutting efficiency is greatly improved.

The first driving assembly comprises a first screw rod assembly and a first driving motor 5 which are horizontally arranged, and the first driving motor 5 is connected with the first screw rod assembly through a first synchronous wheel 13; the second driving assembly comprises a second screw rod assembly and a second driving motor 6 which are horizontally arranged, and the second driving motor is connected with the second screw rod assembly through a second synchronous wheel 17.

Further, the first lead screw assembly comprises a first lead screw 12 and a second lead screw 14 which are horizontally and coaxially arranged, and the first lead screw 12 and the second lead screw 14 are connected through a first coupler 19; the second screw rod assembly comprises a third screw rod 15 and a fourth screw rod 16 which are horizontally and coaxially arranged, and the third screw rod 15 and the fourth screw rod 16 are connected through a second coupling 18.

The presser foot assembly comprises fixed seats 8(9, 10 and 11) which are arranged on the guide rail in a sliding mode, driving oil cylinders 21(22, 23 and 24) are respectively arranged on the fixed seats 8(9, 10 and 11), and the presser foot 1(2, 3 and 4) moves up and down under the driving of the driving oil cylinders 21(22, 23 and 24) and is used for pressing or releasing a workpiece to be machined.

Preferably, the fixing seats 8(10) of the first presser foot assembly and the third presser foot assembly are respectively connected with the first lead screw 12 and the second lead screw 14 through driving lead screw nuts 47 (25); the fixing seats 9(11) of the second presser foot assembly and the fourth presser foot assembly are respectively connected with the third screw rod 15 and the fourth screw rod 16 through driving screw rod nuts 26(20), under the action of a driving motor, the first screw rod assembly rotates, and each screw rod respectively moves horizontally along the guide rail 7 under the driving of the driving screw rod nuts 47(25, 26 and 20) connected with the screw rod assemblies.

Preferably, a presser foot 1(2, 3, 4) is arranged at the upper part of each driving oil cylinder 21(22, 23, 24), so that the pressing and fixing effect on the workpiece is improved.

When the end pressing plate mechanism works specifically, the end pressing plate mechanism of the embodiment compresses and fixes a workpiece to be processed through two sets of pressing foot assemblies which are arranged and can be controlled respectively, on one hand, the pressing foot can be controlled to be matched with the cutting head to groove the workpiece to be processed and not to be compressed and fixed, on the other hand, when the position of the pressing foot needs to be changed, the workpiece can still be in a compression and fixed state all the time through the other set of pressing foot assemblies, the workpiece is prevented from being shifted, the workpiece is prevented from shaking when the position of the pressing foot is changed, the processing efficiency is greatly improved while the processing precision is ensured

According to the double-body double-head double-groove planer, the plurality of working table surfaces B1(B2) are arranged on the machine tool base 85, the plurality of tool bit assemblies which can move in the X, Y, Z axis direction and are matched with each other in a linkage mode are arranged on the upper guide rail seat 84, the tool bit mechanism can be freely adjusted in the X, Y, Z axis direction, synchronous processing operation of grooving in multiple groove positions and different depths and the same depth of a processed workpiece can be simultaneously realized, meanwhile, the pressing foot mechanism which moves in a linkage mode and can be controlled in a split mode is adopted, under the condition that the pressing state position of the workpiece is kept unchanged, the automatic requirement in the working process of the adjustable multi-tool-head groove planer can be met, the grooving processing working efficiency is greatly improved, and the workpiece processing cost is saved.

Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the idea of the utility model, also technical features in the above embodiments or in different embodiments may be combined and there are many other variations of the different aspects of the utility model as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements and the like that may be made without departing from the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims

1. A double-body double-head double-groove planer comprises a machine tool base, wherein upper guide rail seats are fixed above the machine tool base through side plates arranged at two ends of the machine tool base respectively, X-axis guide rails are arranged on two sides of each upper guide rail seat in parallel, a working table is arranged on the machine tool base in parallel, side pressure plate mechanisms used for pressing the side edges of workpieces to be machined are arranged on the side edges of the working table respectively, end pressure plate mechanisms used for pressing the side edges of the workpieces to be machined are arranged at the end portions of the working table, a tool bit mechanism is arranged on each upper guide rail seat, the tool bit mechanism slides along the X-axis guide rails under the driving of an X-axis motor, and tool bit assemblies which correspond to the working table respectively and are used for grooving the workpieces are arranged on the tool bit mechanism.

2. The twin-body, double-head, double-flute router of claim 1 wherein said bit mechanism includes a bit base, the upper part of the tool bit base is oppositely provided with a slide block fixing plate matched with the X-axis guide rail, a slide block is arranged between the slide block fixing plate and the X-axis guide rail, the lower part of the tool bit base is provided with a first guide rail component and a second guide rail component which are vertical to the X-axis direction, the first guide rail component is provided with a first cutter head component and a second cutter head component in a sliding way, the second guide rail component is provided with a third cutter head component and a fourth cutter head component in a sliding way, the lower part of the cutter head base is also provided with a first screw rod component which is respectively used for driving the first cutter head component and the second cutter head component to move along the first guide rail component, and the second screw rod assembly is used for driving the third cutter head assembly and the fourth cutter head assembly to move along the second guide rail assembly.

3. The twin-body double-ended double-grooved keyway planer of claim 2 wherein the first guide rail assembly comprises a first Z-axis guide rail and a second Z-axis guide rail which are arranged in parallel, the second guide rail assembly comprises a third Z-axis guide rail and a fourth Z-axis guide rail which are arranged in parallel, the first lead screw assembly is arranged between the first Z-axis guide rail and the second Z-axis guide rail, and the second lead screw assembly is arranged between the third Z-axis guide rail and the fourth Z-axis guide rail.

4. The twin-body double-head double-groove router of claim 2 wherein the first lead screw assembly comprises a first Z-axis lead screw rotationally connected with the first cutter head assembly and a second Z-axis lead screw rotationally connected with the second cutter head assembly, the first Z-axis lead screw and the second Z-axis lead screw being connected through a first coupling; the second screw rod assembly comprises a third Z-axis screw rod and a fourth Z-axis screw rod, the third Z-axis screw rod is rotatably connected with the third tool bit assembly, the fourth Z-axis screw rod is rotatably connected with the fourth tool bit assembly, and the third Z-axis screw rod is connected with the fourth Z-axis screw rod through a second coupler.

5. The twin-body double-head double-groove recessing machine according to claim 4, wherein the lower part of said tool bit base is further provided with a first Z-axis motor and a second Z-axis motor for driving a first screw assembly and a second screw assembly respectively, said first Z-axis motor is connected with a second Z-axis screw through a Z-axis reducer, said second Z-axis motor is connected with a fourth Z-axis screw through a Z-axis reducer, said first to fourth tool bit assemblies each comprise a tool bit base, two groups of tool bits are slidably provided on said tool bit base along the Y-axis direction respectively, and said tool bit base is provided with a Y-axis driving motor for driving the tool bits to move up and down respectively.

6. The double-body double-head double-groove keyway planer according to claim 1, wherein the platen mechanism comprises a base, a guide rail is horizontally arranged on the base, a plurality of presser foot assemblies, including a first presser foot assembly, a second presser foot assembly, a third presser foot assembly and a fourth presser foot assembly, are slidably arranged on the guide rail, a first driving assembly and a second driving assembly are further arranged on the base and are respectively used for driving the presser foot assemblies to slide along the guide rail, the first driving assembly synchronously drives the first presser foot assembly and the third presser foot assembly to move, the second driving assembly synchronously drives the second presser foot assembly and the fourth presser foot assembly to move, and the presser foot assembly is provided with a presser foot for pressing a workpiece to be machined.

7. The twin-body double-head double-groove keyway planer of claim 6 wherein the first drive assembly comprises a horizontally disposed first lead screw assembly, a first drive motor, said first drive motor connected to said first lead screw assembly via a first synchronizing wheel; the second driving assembly comprises a second screw rod assembly and a second driving motor which are horizontally arranged, and the second driving motor is connected with the second screw rod assembly through a second synchronizing wheel.

8. The twin-body double-head double-groove keyway planer of claim 7 wherein the first lead screw assembly comprises a first lead screw and a second lead screw which are horizontally and coaxially arranged, and the first lead screw and the second lead screw are connected through a first coupling; the second screw rod assembly comprises a third screw rod and a fourth screw rod which are horizontally and coaxially arranged, and the third screw rod and the fourth screw rod are connected through a second coupling.

9. The twin body double head twin groove router of claim 8 wherein the pressure foot assembly includes a mounting block slidably mounted on the guide rail, the mounting block having a drive cylinder mounted thereon, the pressure foot being moved up and down by the drive cylinder.

10. A twin body double head double groove planer as defined in claim 9 wherein the holders of said first and third presser foot assemblies are connected to the first and second lead screws by drive lead screw nuts, respectively; and the fixed seats of the second presser foot assembly and the fourth presser foot assembly are respectively connected with the third screw rod and the fourth screw rod through driving screw rod nuts.