CN112917163B

CN112917163B - Numerical control cutting tumbling mill

Info

Publication number: CN112917163B
Application number: CN202110118095.7A
Authority: CN
Inventors: 张伟国
Original assignee: Wuxi Suoqi Equipment Manufacturing Co ltd
Current assignee: Wuxi Suoqi Equipment Manufacturing Co ltd
Priority date: 2021-01-28
Filing date: 2021-01-28
Publication date: 2023-01-17
Anticipated expiration: 2041-01-28
Also published as: CN112917163A

Abstract

The invention discloses a numerical control cutting tumbling mill which is characterized in that: the machine tool comprises a machine tool, a fixed seat, an oil distributor and a main shaft box are sequentially arranged on the machine tool, the fixed seat, the oil distributor and the main shaft box are coaxially arranged, a boring rod is fixedly connected to an output shaft of the main shaft box and can drive the boring rod to rotate, the main shaft box and the oil distributor slide along the machine tool under the action of a correspondingly arranged screw rod driving device respectively to be close to or far away from the fixed seat, the other end of the boring rod extends into the oil distributor and is detachably connected with a tool bit, the oil distributor is communicated with a cooling system located outside the machine tool and provides cutting fluid for the oil distributor, a workpiece is fixed between the fixed seat and the oil distributor, conical disks located at two ends of the workpiece and used for tightly supporting the workpiece are respectively arranged on the fixed seat and the oil distributor, the conical disks are connected with the workpiece in a sealing mode, and a plurality of workpiece supporting assemblies used for supporting the workpiece are further arranged between the fixed seat and the oil distributor. Compact structure and good stability.

Description

Numerical control cutting tumbling mill

Technical Field

The invention relates to the technical field of scraping and rolling machines, in particular to a numerical control cutting and rolling machine.

Background

At present, with the rapid development of science and technology, deep hole finish machining is generally carried out by two machining processes, wherein when the length-diameter ratio is 1.5-10, drilling, rough boring, semi-fine boring, fine boring and rolling are carried out, and when the length-diameter ratio is more than 10, drilling and honing are carried out. The processing of a finished product requires multiple processes, multiple cutters and continuous cutter replacement, and although the quality is relatively stable, the processing efficiency is low and the cost is high. The existing skiving machine adopts a combined type cutter to process, roughly bore, scrape, roll finish and other processing procedures of the cylinder barrel of the oil cylinder at one time, the processing efficiency can reach more than ten times of the traditional grinding mode, so the existing skiving machine is more and more favored by manufacturers, processes an inner hole with the diameter of 30, processes the surface roughness to reach Ra3.2 or less, and completely meets the reserved surface roughness required by the rolling processing, meanwhile, the existing low-plasticity rolling can be completed together with the cutting processing in a common machine tool or a processing center, the processing procedures of deep residual stress distribution, less cold-work hardening skiving machine adopts the combined type cutter to process, roughly bore, scrape, roll finish and the like of the cylinder barrel of the oil cylinder by a simple process, and the processing efficiency can reach more than ten times of the traditional grinding mode, so the existing skiving machine is more and more favored by the manufacturers. But for the pipe fittings with longer processing length, the stability of the machine is not enough, which causes poor processing precision and damages the pipe fittings.

Disclosure of Invention

In order to overcome the defects, the invention aims to provide the numerical control cutting tumbling mill which is compact in structure and good in stability.

In order to achieve the purpose, the invention adopts the technical scheme that: a numerical control cutting tumbling mill is characterized in that: the machining tool comprises a machine tool, wherein a fixing seat, an oil supplier and a main shaft box are sequentially arranged on the machine tool, the fixing seat, the oil supplier and the main shaft box are coaxially arranged, a boring rod is fixedly connected to an output shaft of the main shaft box and can drive the boring rod to rotate, the main shaft box and the oil supplier respectively slide along the machine tool under the action of a correspondingly arranged screw rod driving device to be close to or far away from the fixing seat, the other end of the boring rod extends into the oil supplier and is detachably connected with a tool bit, the oil supplier is communicated with a cooling system positioned outside the machine tool and provides cutting fluid for the oil supplier, a workpiece is fixed between the fixing seat and the oil supplier, conical disks positioned at two ends of the workpiece and used for tightly supporting the workpiece are respectively arranged on the fixing seat and the oil supplier, the conical disks are hermetically connected with the workpiece, and a plurality of workpiece supporting assemblies used for supporting the workpiece are further arranged between the fixing seat and the oil supplier.

Further, work piece supporting component includes the base, the base can be followed the lathe and removed, it is connected with two-way lead screw to rotate on the base, threaded connection has first slide and second slide on two reverse screw threads of two-way lead screw respectively, it is connected with the work piece supporting wheel that can support with the work piece to lean on to rotate respectively on first slide and the second slide. The reverse thread is driven to rotate through the hand wheel, the distance between the first sliding seat and the second sliding seat is adjusted, the device is suitable for workpieces with different diameters, the workpieces are clamped, the workpieces are conveniently clamped between the oil receiver and the fixing seat, the stability is good for the workpieces with overlong lengths, and the shaking in the cutting and barreling process is reduced.

Further say, be provided with the slide rail with two-way lead screw parallel arrangement on the base, first slide and second slide all slide along the slide rail, improve the mobility stability of first slide and second slide.

The oil supplier further comprises a first movable seat and a shell fixed above the first movable seat, an inner cavity of the shell is communicated with a cooling system, the conical disc is fixed on one side, close to the fixed seat, of the shell, a first bearing seat is arranged on one side, close to the spindle box, of the shell, and the first bearing seat is in dynamic sealing connection with the boring rod. The cooling system conveys cutting fluid into the shell, the cutting fluid passes through the cutter to carry out workpiece inner circle, heat generated by friction in the cutting and tumbling processes is reduced, metal chips generated in the cutting process are flushed out of the inner circle, and the metal chips enter the cooling system again to carry out filtering layer and recycle the cutting fluid.

Furthermore, an oil guide groove located below the first bearing seat is formed in the first movable seat, the oil guide groove is obliquely arranged, a buffer rod located at a high point of the oil guide groove is arranged on the first movable seat, and the buffer rod is communicated with the oil guide groove. Cutting fluid from first bearing frame seepage is derived from leading the oil groove in the casing, and the cutting fluid of derivation gets into cooling system once more, and the buffer beam avoids cutting fluid too much, oozes and leads the oil groove.

Furthermore, the machine tool is provided with a chute downwards along the upper end face of the machine tool, the screw rod driving device comprises a driving screw rod which is rotatably arranged in the chute, a driving motor which drives the driving screw rod to rotate is arranged in the chute, the oil supplier and the spindle box are respectively provided with a nut seat which is in threaded connection with the driving screw rod correspondingly arranged, and the chute is also internally provided with a plurality of screw rod supporting components which support the driving screw rod. For the overlength lead screw, the supporting component plays a supporting role, and the bending damage of the driving lead screw is avoided.

Further, the lead screw supporting component comprises a fixing frame fixed in the sliding groove, two second supporting wheels which are located below the driving lead screw and are in the same direction with the driving lead screw in a rotating mode are connected to the fixing frame in a rotating mode, and the second supporting wheels are symmetrically arranged on two sides of the driving lead screw and can be abutted to the driving lead screw.

Further, two guide frames are further arranged at two ends of the fixing frame, a plurality of idler wheels are rotatably connected onto the guide frames, the idler wheels on the two guide frames are symmetrically arranged on two sides of the driving screw rod and leave gaps between the idler wheels and the driving screw rod, the rotating direction of the idler wheels is perpendicular to the rotating direction of the driving screw rod, and the lower end face of the nut seat can be abutted against the idler wheels.

The invention has the beneficial effects that: the workpiece supporting component and the screw rod supporting component are additionally arranged, so that when a workpiece with an overlong processing length is processed, the workpiece supporting component can well support and fix the workpiece, and the vibration of the workpiece in the processing process is reduced. At the moment, the screw rod also needs to be processed for a long distance, and the screw rod supporting assembly plays a supporting role in supporting the screw rod and prevents the screw rod from being bent due to overlong length. The whole numerical control cutting tumbling mill can finish the cutting and tumbling of the inner wall of a workpiece, and has compact structure and good stability.

Drawings

FIG. 1 is a top view of an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a machine tool according to an embodiment of the present invention;

FIG. 3 is a schematic view of the structure at A in FIG. 2;

FIG. 4 is a schematic view of the structure of FIG. 2 at B;

FIG. 5 is a schematic diagram of the mechanism of the lead screw support assembly in an embodiment of the present invention;

fig. 6 is a cross-sectional view of an embodiment of the present invention.

In the figure:

1-machine tool, 1 a-sliding groove, 2-fixed seat, 3-oil supplier, 31-first movable seat, 311-oil guide groove, 32-shell, 33-buffer rod, 4-main spindle box, 5-boring rod, 6-cooling system, 61-chip remover, 62-dirty groove, 63-clean groove, 7-workpiece support component, 71-base, 72-bidirectional screw rod, 73-first sliding seat, 74-second sliding seat, 75-workpiece support wheel, 76-sliding rail, 81-driving screw rod, 82-nut seat, 83-screw rod support component, 831-fixed frame, 832-second support wheel, 833-guide frame and 834-roller.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the present invention more comprehensible to those skilled in the art, and will thus provide a clear and concise definition of the scope of the present invention.

Examples

Referring to the attached drawings 1-6, the numerical control cutting tumbling mill of the invention comprises a machine tool 1, wherein the machine tool 1 is sequentially provided with a fixed seat 2, an oil supplier 3 and a main spindle box 4, and the fixed seat 2, the oil supplier 3 and the main spindle box 4 are coaxially arranged. The output shaft of the main spindle box 4 is fixedly connected with a boring bar 5, and the boring bar 5 can rotate under the driving of the main spindle box 4. The spindle box 4 and the oil supplier 3 respectively slide along the machine tool 1 under the action of the correspondingly arranged screw rod driving device to be close to or far away from the fixed seat 2, and the fixed seat 2 can also slide along the machine tool 1 under the driving of a hydraulic cylinder. The other end of the boring bar 5 extends into the oil supply device 3 and is detachably connected with a cutter head, and the cutter head and the boring bar 5 rotate synchronously.

The oil supply device 3 is communicated with a cooling system 6 positioned outside the machine tool 1, and the cooling system 6 supplies cutting fluid to the oil supply device 3. Cooling system 6 includes chip cleaner 61, dirty groove 62 and clean groove 63, and chip cleaner 61 is located fixing base 2 one side, and the cutting fluid that has the metal fillings gets into chip cleaner 61, and dirty groove 62 one side is close to chip cleaner 61 medial surface and sets up, and clean groove 63 one side is close to with dirty groove 62 opposite side and is connected, and clean groove 63 and the intercommunication of awarding the oil ware 3 provide clear cutting fluid for awarding the oil ware 3. A workpiece is fixed between the fixed seat 2 and the oil supply device 3, conical discs which are positioned at two ends of the workpiece and used for tightly supporting the workpiece are respectively arranged on the fixed seat 2 and the oil supply device 3, the conical discs are connected with the workpiece in a sealing manner, and a plurality of workpiece supporting components 7 used for supporting the workpiece are also arranged between the fixed seat 2 and the oil supply device 3.

The workpiece supporting assembly 7 comprises a base 71, the base 71 can move along the machine tool 1, a bidirectional screw rod 72 is connected to the base 71 in a rotating mode, a first sliding seat 73 and a second sliding seat 74 are respectively connected to two reverse threads of the bidirectional screw rod 72 in a threaded mode, and workpiece supporting wheels 75 capable of being abutted to workpieces are respectively connected to the first sliding seat 73 and the second sliding seat 74 in a rotating mode. The reverse threads are driven to rotate through the hand wheel, the distance between the first sliding seat 73 and the second sliding seat 74 is adjusted, the reverse threads are suitable for workpieces with different diameters, the workpieces are clamped conveniently between the oil supply head and the fixed seat 2, stability is good for the workpieces with overlong lengths, and shaking in the cutting and barreling process is reduced. The base 71 is provided with a slide rail 76 which is arranged in parallel with the bidirectional screw 72, and the first slide carriage 73 and the second slide carriage 74 both slide along the slide rail 76, so that the moving stability of the first slide carriage 73 and the second slide carriage 74 is improved.

The oil supplier 3 comprises a first movable seat 31 and a shell 32 fixed above the first movable seat 31, the inner cavity of the shell 32 is communicated with the cooling system 6, the conical disc is fixed on one side of the shell 32 close to the fixed seat 2, one side of the shell 32 close to the spindle box 4 is provided with a first bearing seat, and the first bearing seat is in dynamic sealing connection with the boring rod 5. The cooling system 6 conveys cutting fluid into the shell 32, the cutting fluid passes through a cutter to perform workpiece inner circle, heat generated by friction in the cutting and tumbling processes is reduced, metal chips generated in the cutting process are flushed out of the inner circle, and the metal chips enter the cooling system 6 again to perform filtering layer and recycle the cutting fluid.

The first movable base 31 is provided with an oil guide groove 311 located below the first bearing seat, the oil guide groove 311 is obliquely arranged, the first movable base 31 is provided with a buffer rod 33 located at a high point of the oil guide groove 311, and the buffer rod 33 is communicated with the oil guide groove 311. The cutting fluid leaking from the first bearing seat in the housing 32 is guided out from the oil guide groove 311, the guided cutting fluid enters the cooling system 6 again, and the buffer rod 33 prevents the cutting fluid from leaking out of the oil guide groove 311 due to the excessive cutting fluid.

The machine tool 1 is provided with a sliding groove 1a along the upper end surface downwards, the screw rod driving device comprises a driving screw rod 81 which is rotatably arranged in the sliding groove 1a, a driving motor which drives the driving screw rod 81 to rotate is arranged in the sliding groove 1a, the oil supply device 3 and the spindle box 4 are respectively provided with a nut seat 82 which is in threaded connection with the driving screw rod 81 which is correspondingly arranged, and the sliding groove 1a is also internally provided with a plurality of screw rod supporting components 83 which support the driving screw rod 81. To the lead screw of overlength, supporting component plays the supporting role, avoids driving lead screw 81 crooked impaired.

The lead screw supporting component 83 includes a fixing frame 831 fixed in the sliding groove 1a, the fixing frame 831 is connected with two second supporting wheels 832 located below the driving lead screw 81 and having the same rotating direction with the driving lead screw 81 in a rotating manner, and the second supporting wheels 832 are symmetrically arranged on two sides of the driving lead screw 81 and can abut against the driving lead screw 81. Two ends of the fixing frame 831 are further provided with two guide frames 833, the guide frames 833 are connected with a plurality of idler wheels 834 in a rotating mode, the idler wheels 834 on the two guide frames 833 are symmetrically arranged on two sides of the driving screw rod 81 and are in clearance with the driving screw rod 81, the rotating direction of the idler wheels 834 is perpendicular to the rotating direction of the driving screw rod 81, and the lower end face of the nut seat 82 can abut against the idler wheels 834.

The workpiece is placed on the workpiece supporting assembly 7, the vibration of the workpiece in the machining process is reduced, the fixed seat 2 and the oil feeder 3 are driven to clamp the workpiece at two ends, the boring rod 5 is driven by the lead screw driving assembly to extend into the workpiece, the cutter is driven by the spindle box 4 to synchronously rotate, the cutting and the barreling of the inner wall of the workpiece can be completed, the structure is compact, and the stability is good.

The above embodiments are provided only for illustrating the technical idea and features of the present invention, and the purpose of the present invention is to provide those skilled in the art with understanding and implementing the present invention, and not to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.

Claims

1. A numerical control cutting tumbling mill is characterized in that: the machining tool comprises a machine tool (1), wherein a fixed seat (2), an oil supply device (3) and a spindle box (4) are sequentially arranged on the machine tool (1), the fixed seat (2), the oil supply device (3) and the spindle box (4) are coaxially arranged, an output shaft of the spindle box (4) is fixedly connected with a boring rod (5) and can drive the boring rod (5) to rotate, the spindle box (4) and the oil supply device (3) respectively slide along the machine tool (1) under the action of a correspondingly arranged screw rod driving device to be close to or far away from the fixed seat (2), the other end of the boring rod (5) extends into the oil supply device (3) and is detachably connected with a tool bit, the oil supply device (3) is communicated with a cooling system (6) positioned outside the machine tool (1), the cooling system (6) provides cutting fluid for the oil supply device (3), workpieces are fixed between the fixed seat (2) and the oil supply device (3), conical disks positioned at two ends of the workpieces and used for jacking the workpieces are respectively arranged on the fixed seat (2) and the oil supply device (3), and a plurality of workpiece supporting components (7) are also arranged between the fixed seat (2) and the oil supply device (3);

the oil supplier (3) comprises a first moving seat (31) and a shell (32) fixed above the first moving seat (31), a first bearing seat is arranged on one side, close to a spindle box, of the shell (32), an oil guide groove (311) located below the first bearing seat is arranged on the first moving seat (31), the oil guide groove (311) is obliquely arranged, a buffer rod (33) located at the high point of the oil guide groove (311) is arranged on the first moving seat (31), and the buffer rod (33) is communicated with the oil guide groove (311);

the machine tool (1) is provided with a sliding groove (1 a) downwards along the upper end face of the machine tool (1), the sliding groove is connected with a driving screw rod (81) in a rotating mode, a plurality of screw rod supporting assemblies (83) for supporting the driving screw rod (81) are further arranged in the sliding groove (1 a), and the driving screw rod (81) is connected with a nut seat (82) in a threaded mode; lead screw supporting component (83) is including fixing mount (831) in spout (1 a), the both ends of mount (831) still are provided with two leading truck (833), it is connected with a plurality of gyro wheels (834) to rotate on leading truck (833), two gyro wheel (834) symmetry on leading truck (833) sets up and leaves the clearance in drive lead screw (81) both sides and with drive lead screw (81), the rotation direction and the drive lead screw (81) rotation direction of gyro wheel (834) are perpendicular, nut seat (82) lower terminal surface can support with gyro wheel (834) and lean on.

2. The numerical control cutting tumbling mill of claim 1, wherein: work piece supporting component (7) include base (71), lathe (1) can be followed in base (71) and removed, it is connected with two-way lead screw (72) to rotate on base (71), on two reverse screw threads of two-way lead screw (72) respectively threaded connection have first slide (73) and second slide (74), rotate respectively on first slide (73) and second slide (74) and be connected with work piece supporting wheel (75) that can support with the work piece and lean on.

3. The numerical control cutting tumbling mill of claim 2, wherein: the base (71) is provided with a sliding rail (76) which is parallel to the bidirectional screw rod (72), and the first sliding seat (73) and the second sliding seat (74) both slide along the sliding rail (76).

4. The numerically controlled cutting tumbling mill according to claim 1, wherein: the inner cavity of the shell (32) is communicated with the cooling system (6), the conical disc is fixed on one side, close to the fixed seat (2), of the shell (32), and the first bearing seat is in dynamic sealing connection with the boring rod (5).

5. The numerical control cutting tumbling mill of claim 1, wherein: a driving motor for driving the driving screw rod (81) to rotate is arranged in the sliding groove (1 a), and the oil supply device (3) and the spindle box (4) are respectively provided with a nut seat (82) in threaded connection with the driving screw rod (81) which is correspondingly arranged.

6. The numerical control cutting tumbling mill of claim 5, wherein: the fixing frame (831) is rotatably connected with two second supporting wheels (832) which are located below the driving screw rod (81) and have the same rotating direction with the driving screw rod (81), and the second supporting wheels (832) are symmetrically arranged on two sides of the driving screw rod (81) and can be abutted against the driving screw rod (81).