CN106738162B - Anti-bending device of numerical control hydraulic double-clamping-shaft rotary cutter - Google Patents
Anti-bending device of numerical control hydraulic double-clamping-shaft rotary cutter Download PDFInfo
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- CN106738162B CN106738162B CN201710092227.7A CN201710092227A CN106738162B CN 106738162 B CN106738162 B CN 106738162B CN 201710092227 A CN201710092227 A CN 201710092227A CN 106738162 B CN106738162 B CN 106738162B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
- B27L5/00—Manufacture of veneer ; Preparatory processing therefor
- B27L5/02—Cutting strips from a rotating trunk or piece; Veneer lathes
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Abstract
The invention discloses a bending-proof device of a numerical control hydraulic double-clamping-shaft rotary cutter, which comprises a machine base, a cutter frame body and a bending-proof device and is characterized in that the bending-proof device is arranged, the bending-proof device comprises a jumping-proof cross beam, a compression roller, a movable roller, a fulcrum shaft, a cross beam movable slideway, a rotating frame, a supporting hydraulic cylinder, a fixed seat, a supporting frame and a hinged shaft, the left end and the right end of the cutter frame body are respectively and symmetrically provided with the cross beam movable slideway, the cross beam movable slideway is arranged along the moving direction of the cutter frame body, the rear part of the upper end surface of the cross beam movable slideway deviates from a horizontal plane and gradually inclines downwards to form an inclined guide rail surface, the fulcrum shaft is connected in series with the jumping-proof cross beam, the compression roller is horizontally arranged at the center of the lower part of the jumping-proof cross beam, and the bending-proof cross beam front end is provided with the bending-proof device.
Description
Technical Field
The invention relates to woodworking machinery, in particular to an anti-bending device of a numerical control hydraulic double-clamping-shaft rotary cutter.
Background
As is well known, when a single plate is rotationally cut by a numerical control hydraulic double-chuck rotary cutter, in order to ensure that the thickness of the rotationally cut single plate is uniform and the plate surface is not broken, a bending-proof device of the numerical control hydraulic double-chuck rotary cutter is usually arranged on a machine body and comprises a lifting support, a rotating shaft, a rotating support, a lifting oil cylinder, an upper bending-proof roller and a lower bending-proof roller, wherein the lifting support is arranged above the machine body, the lifting support is provided with the rotating shaft, the rotating shaft is provided with the rotating support, the rotating support is provided with the upper bending-proof roller and the lower bending-proof roller, the lifting oil cylinder drives the rotating shaft to move and drives the bending-proof rollers to press against a middle wood core, the wood core rotates to drive the bending-proof rollers to rotate and prevent the wood core from bending, and the substantial deficiency of the structure is that: because the anti-bending roller can not automatically adjust the angle according to the gradual reduction of the diameter of the wood core, the contact between the anti-bending roller and the wood core is uneven, the anti-bending performance is poor, the friction force between the anti-bending roller and the wood core is large, the rotation resistance is large, when the diameter of the wood core is very small or the surface of the wood core is provided with nodules, the anti-bending roller is easy to stop or jump, and the cut veneer is torn due to external force, so the veneer quality is poor, and the wood utilization rate is low.
In order to solve the technical problems, the applicant applies an invention patent with the application number of 200820027355X and the patent name of a bending prevention device of a numerical control hydraulic double-chuck rotary cutting machine to the Chinese patent office at 27.8.2008, and the substantive defects of the structure are as follows in the using process: firstly, in the rotary cutting process, because the upper bending-proof roller and the lower bending-proof roller only perform auxiliary pressing on the central surface of the wood core, the radial circular runout of the wood core is difficult to control; and secondly, the structure of the bending prevention device is complex, the pressure in the process of pressing the wood core is difficult to calculate, when the pressure is smaller than the centrifugal force in the rotation process of the wood core, the center of the wood core protrudes under the action of the centrifugal force, so that the thickness of the rotary-cut plate surface of the veneer is uneven, the quality of the veneer is poor, or the phenomenon of plate breakage is serious, when the pressure is larger than the centrifugal force in the rotation process of the wood core, the center of the wood core is depressed, and the technical problem of poor rotary-cut quality of the veneer or plate breakage can also be caused.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides the anti-bending device of the numerical control hydraulic double-clamping-shaft rotary cutter, which has the advantages of novel and simple structure, convenience in operation, high anti-bending performance, accurate control, high veneer rotary cutting quality, high wood utilization rate and capability of preventing wood cores from generating radial circular run-out in the rotary cutting process.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a numerical control hydraulic double-clamping-shaft rotary cutting machine bending prevention device comprises a machine base, a cutter frame body and a bending prevention device, and is characterized in that the numerical control hydraulic double-clamping-shaft rotary cutting machine bending prevention device is provided with the bending prevention device, the bending prevention device comprises a bending prevention cross beam, a compression roller, a moving roller, a support shaft, a cross beam moving slideway, a rotating frame, a supporting hydraulic cylinder, a fixed seat, a supporting frame and a hinge shaft, the cross beam moving slideway is symmetrically arranged at the left end and the right end of the cutter frame body respectively, the cross beam moving slideway is arranged along the moving direction of the cutter frame body, the rear part of the upper end face of the cross beam moving slideway deviates from a horizontal plane and gradually inclines downwards to form an inclined guide rail surface, under the condition that the diameter of a wood core is gradually reduced, the bending prevention cross beam gradually moves downwards along the inclined guide rail surface, the bending prevention cross beam always keeps the parallelism with the wood core under the dynamic change of the wood core, the support shaft is connected in series in the bending prevention cross beam, the center below the bending prevention cross beam is horizontally provided with the compression roller, the center of the front end of the jump-proof beam is provided with a bending-proof device, so that the compression roller, the bending-proof device and the cutting edge of the cutter body are always positioned on the same inscribed circle, the stability of wood core rotary cutting is obviously improved, the rotary cutting quality of a veneer is greatly improved, two ends of the compression roller are respectively fixedly connected with the jump-proof beam through a bracket, the support shaft is fixedly connected with the jump-proof beam through a bearing, the outer ends of the support shaft are respectively provided with a movable roller, the left end and the right end of the jump-proof beam are respectively connected with a beam movable slideway through the movable roller in a rolling way, the upper parts of the machine bases at the left end and the right end of the cutter frame body are respectively provided with a rotating frame, the front end of the rotating frame is fixedly connected with the jump-proof beam, the rear end of the rotating frame is hinged with the machine bases through a hinged shaft, the front end of the supporting hydraulic cylinder is hinged with the front end of the rotating frame through a front hinged shaft, and the rear end of the supporting frame is hinged with the upper end of the supporting frame through a rear hinged shaft, the lower end of the support frame is fixedly connected with the machine base through the fixed seat, so that when the tool rest body drives the rotary cutter to gradually move forwards for rotary cutting, the support hydraulic cylinder drives the rotary frame to swing by taking the hinged shaft as the center, and further drives the anti-bouncing cross beam to move at a constant speed along the inclined guide rail surface, and the effects of convenience in operation, high bending resistance, accuracy in control and high veneer rotary cutting quality are achieved.
The anti-bending device comprises a jacking cylinder, a connecting hinge shaft, a rotating shaft, a connecting roller, a connecting rod, a rotating shaft, triangular supports and a jacking roller, wherein the jacking cylinder is connected with a support fixed on an anti-bouncing cross beam through the connecting hinge shaft, a telescopic rod of the jacking cylinder is hinged with the connecting roller, a lower support is arranged at the lower end of the support, two ends of the rotating shaft are respectively hinged with the triangular supports and the lower support in sequence, the outer corners of the two triangular supports are hinged with the rotating shaft, the lower corners of the two triangular supports are hinged with the jacking roller, and the connecting roller is hinged with the rotating shaft through the connecting rod, so that the connecting roller is driven to move downwards through the telescopic rod of the jacking cylinder, the triangular supports are driven to rotate by taking the rotating shaft as the center, the jacking roller at the lower ends of the triangular supports abuts against a wood core, and the effects of simple structure and convenience in control are achieved.
The invention can be provided with the automatic plate thickness adjusting device on the rotating frame at the two ends of the anti-jump beam respectively, and the automatic plate thickness adjusting device comprises a fixed plate, a fixed support, a swing cylinder, a cylinder hinge shaft, a connecting rod, a pin shaft, a fulcrum shaft and a joint bearing, wherein the fixed plate is fixedly connected with the rotating frame, the lower end of the fixed support is fixedly connected with the fixed plate, the upper end of the fixed support is fixedly connected with the cylinder hinge shaft through the bearing, the swing cylinder is fixedly connected with the cylinder hinge shaft, the end part of a telescopic rod of the swing cylinder is connected with the joint bearing through the pin shaft, the upper end of the connecting rod is fixedly connected with the joint bearing, and the lower end of the connecting rod is fixedly sleeved with the fulcrum shaft.
The invention has the advantages of novel and simple structure, convenient operation, high bending resistance, accurate control, high veneer rotary cutting quality, high wood utilization rate and the like due to the adoption of the structure.
Drawings
Fig. 1 is a schematic structural view of the front view of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a schematic structural view of a right side view of an embodiment of fig. 1 (a state view when the moving rollers are located on the top of the inclined guide surface of the moving slide of the cross beam).
Fig. 4 is a schematic structural view of a right side view of another embodiment of fig. 1 (a state view when the moving rollers are located at the bottom of the inclined guide surface of the moving slide of the cross beam).
Reference numerals are as follows: the automatic plate thickness adjusting device comprises a base 1, a tool rest body 2, an anti-bending device 3, an anti-jumping beam 4, a press roller 5, a moving roller 6, a support shaft 7, a beam moving slide rail 8, a rotating frame 9, a supporting hydraulic cylinder 10, a fixed seat 11, a hinge shaft 13, an inclined guide surface 14, a support 15, a front hinge shaft 16, a jacking cylinder 17, a connecting hinge shaft 18, a rotating shaft 19, a connecting roller 20, a connecting rod 21, a rotating shaft 22, a triangular support 23, a jacking roller 24, a support 25, a lower support 26, a fixed plate 27, a fixed support 28, a swing cylinder 29, a cylinder hinge shaft 30, a connecting rod 31, a joint bearing 34, an automatic plate thickness adjusting device 35, a rotating frame 36 and a rear hinge shaft 37.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in the attached drawings, the numerical control hydraulic double-clamping-shaft rotary cutting machine bending prevention device comprises a machine base 1, a cutter frame body 2 and a bending prevention device 3, and is characterized in that the numerical control hydraulic double-clamping-shaft rotary cutting machine bending prevention device is provided with the bending prevention device, the bending prevention device comprises a bending prevention cross beam 4, a compression roller 5, a moving roller 6, a support shaft 7, a cross beam moving slideway 8, a rotating frame 9, a support hydraulic cylinder 10, a fixed seat 11, a support frame and a hinge shaft 13, the cross beam moving slideway 8 is respectively and symmetrically arranged at the left end and the right end of the cutter frame body 2, the cross beam moving slideway 8 is arranged along the moving direction of the cutter frame body 2, the rear part of the upper end surface of the cross beam moving slideway 8 deviates from a horizontal plane and is downwards inclined gradually to form an inclined guide rail surface 14, under the condition that the diameter of a wood core is gradually reduced, the bending prevention cross beam 4 is beneficial to be gradually downwards moved along the inclined guide rail surface 14, so that the bending prevention cross beam 4 is always kept parallel to the wood core under the dynamic change of the wood core, a fulcrum shaft 7 is horizontally arranged at the center of the anti-jumping beam 4, a press roller 5 is horizontally arranged at the center below the anti-jumping beam 4, an anti-bending device 3 is arranged at the center of the front end of the anti-jumping beam 4, so that the press roller 5, the anti-bending device 3 and the cutting edge of the cutter body are always positioned on the same inscribed circle, the rotary cutting stability of the wood core is obviously improved, the rotary cutting quality of the veneer is greatly improved, two ends of the press roller 5 are respectively and fixedly connected with the anti-jumping beam 4 through a bracket 15, the fulcrum shaft 7 is fixedly connected with the anti-jumping beam 4 through a bearing, the outer end of the fulcrum shaft 7 is respectively provided with a movable roller 6, the left end and the right end of the anti-jumping beam 4 are respectively and rotatably connected with a beam movable slideway 8 through the movable roller 6, rotating frames 9 are respectively arranged above the machine bases at the left end and the right end of the cutter frame body 2, the front end of each rotating frame 9 is fixedly connected with the anti-jumping beam 4, and the rear end is hinged with the machine base 1 through a hinge shaft 13, the support hydraulic cylinder 10 is arranged above the rotating frame 9, the front end of the support hydraulic cylinder 10 is hinged with the front end of the rotating frame 9 through a front hinge shaft 16, the rear end of the support hydraulic cylinder is hinged with the upper end of the support frame through a rear hinge shaft 37, the lower end of the support frame is fixedly connected with the machine base 1 through a fixed seat 11, so that when the cutter frame body 2 drives the rotary cutter to gradually move forwards for rotary cutting, the support hydraulic cylinder 10 drives the rotating frame 9 to swing by taking the hinge shaft 13 as a center, and then the anti-bouncing beam 4 is driven to move at a constant speed along the inclined guide rail surface 14, and the effects of convenience in operation, high bending resistance, accuracy in control and high veneer rotary cutting quality are achieved.
The anti-bending device 3 comprises a jacking cylinder 17, a connecting hinge shaft 18, a rotating shaft 19, connecting rollers 20, connecting rods 21, a rotating shaft 22, triangular supports 23 and top rollers 24, wherein the jacking cylinder 17 is connected with supports 25 fixed on the anti-bouncing cross beam 4 through the connecting hinge shaft 18, telescopic rods of the jacking cylinder 17 are hinged with the connecting rollers 20, lower supports 26 are arranged at the lower ends of the supports 25, two ends of the rotating shaft 19 are respectively hinged with the triangular supports 23 and the lower supports 26 in sequence, the outer corners of the two triangular supports 23 are hinged with the rotating shaft 22, the lower corners of the two triangular supports 23 are hinged with the top rollers 24, and the connecting rollers 20 are hinged with the rotating shaft 22 through the connecting rods 21, so that the connecting rollers 20 are driven to move downwards through the telescopic rods of the jacking cylinder 17, the triangular supports 23 are driven to rotate by taking the rotating shaft 19 as the center, the top rollers 24 at the lower ends of the triangular supports 23 abut against wood cores, and the effects of simple structure and convenience in control are achieved.
According to the invention, automatic plate thickness adjusting devices 35 are respectively arranged on the rotating frames at two ends of the anti-jumping beam, and comprise a fixed plate 27, a fixed support 28, a swinging cylinder 29, a cylinder hinge shaft 30, a connecting rod 31, a pin shaft, a fulcrum shaft 7 and a joint bearing 34, wherein the fulcrum shaft 7 adopts an eccentric shaft, the fixed plate 27 is fixedly connected with the rotating frame 9, the lower end of the fixed support 28 is fixedly connected with the fixed plate 27, the upper end of the fixed support 28 is fixedly connected with the cylinder hinge shaft 30 through a bearing, the swinging cylinder 29 is fixedly connected with the cylinder hinge shaft 30, the end part of a telescopic rod of the swinging cylinder 29 is connected with the joint bearing 34 through the pin shaft, the upper end of the connecting rod 31 is fixedly connected with the joint bearing 34, and the lower end of the connecting rod is fixedly sleeved with the fulcrum shaft 7 through the rotating frame 36.
The supporting hydraulic cylinder 10, the swinging cylinder 29 and the abutting cylinder 17 are respectively connected with a control device.
When the log peeling machine works, a log is positioned by a claw at the inner end of a machine base, a control device instructs a support hydraulic cylinder 10, a swing cylinder 29 and a propping cylinder 17 to respectively act, so that the upper end of the log is abutted against a compression roller 5, the front side of the log is abutted against a top roller 24, and the rear side of the log is abutted against a rotary cutter, the control device instructs a servo drive control device on a tool rest body 2 to move, so that the tool rest body 2 drives the rotary cutter to move forwards at a constant speed, the diameter of the log is gradually reduced, the tool rest body 2 drives a beam moving slideway 8 to move forwards in the process of gradually changing the diameter of the log, a moving roller 6 gradually enters an inclined guide rail surface, an anti-bouncing cross beam 4 rotates by taking a hinged shaft as the center through a rotating frame 9 and enables the moving roller 6 to move downwards along the inclined guide rail surface, the compression roller 5 is driven to finally press the log core for rotary cutting, and simultaneously, the propping cylinder 17 gradually drives the top roller 24 to lean against the log core at a constant speed, so that the effects of convenient operation, high bending prevention performance, accurate control and high veneer rotary cutting quality are achieved; when the veneer thickness needs to be adjusted, the control device instructs the telescopic rod of the swing cylinder 29 to extend or contract, so that the connecting rod 31 drives the fulcrum shaft 7 to rotate to a set angle by taking the pin shaft as the center, the downward moving distance of the compression roller 5 below the anti-bouncing cross beam 4 reaches the thickness of the veneer, the outer circles of the compression roller 5 and the top roller 24 are always tangent to the log core, the time for manual adjustment during rotary cutting of different veneer thicknesses is greatly shortened, the rotary cutting precision is further improved, and unnecessary waste caused by manual veneer thickness adjustment in a shutdown state is reduced.
The invention has the advantages of novel and simple structure, convenient operation, high bending resistance, accurate control, high veneer rotary cutting quality, high wood utilization rate and the like.
Claims (1)
1. A numerical control hydraulic double-clamping-shaft rotary cutting machine anti-bending device comprises a machine base, a cutter frame body and an anti-bending device, and is characterized in that the anti-bending device is arranged, the anti-bending device comprises an anti-jumping cross beam, a compression roller, a moving roller, a fulcrum shaft, a cross beam moving slideway, a rotating frame, a supporting hydraulic cylinder, a fixed seat, a supporting frame and a hinged shaft, the cross beam moving slideway is symmetrically arranged at the left end and the right end of the cutter frame body respectively, the cross beam moving slideway is arranged along the moving direction of the cutter frame body, the rear part of the upper end face of the cross beam moving slideway deviates from a horizontal plane and gradually inclines downwards to form an inclined guide rail surface, the fulcrum shaft is connected in series in the anti-jumping cross beam, the compression roller is horizontally arranged at the center below the anti-jumping cross beam, the anti-bending device is arranged at the center of the front end of the anti-jumping cross beam, so that the compression roller, the anti-bending device and the cutting edges of a cutter body are always positioned on the same inscribed circle, and two ends of the compression roller are fixedly connected with the anti-jumping cross beam through the bracket respectively, the support shaft is fixedly connected with the anti-bouncing beam through a bearing, the outer end of the support shaft is respectively provided with a movable roller, the left end and the right end of the anti-bouncing beam are respectively in rolling connection with a beam movable slideway through the movable roller, the bases at the left end and the right end of the knife rest body are respectively provided with a rotating frame, the front end of the rotating frame is fixedly connected with the anti-bouncing beam, the rear end of the rotating frame is hinged with the bases through a hinged shaft, a supporting hydraulic cylinder is arranged above the rotating frame, the front end of the supporting hydraulic cylinder is hinged with the front end of the rotating frame through a front hinged shaft, the rear end of the supporting hydraulic cylinder is hinged with the upper end of the supporting frame through a rear hinged shaft, the lower end of the supporting frame is fixedly connected with the bases through a fixed seat, the anti-bending device consists of an abutting air cylinder, a connecting hinged shaft, a rotating shaft, a connecting roller, a connecting rod, a rotating shaft, a triangular support and an ejecting roller, the abutting air cylinder is connected with a support fixed on the anti-bouncing beam through the connecting hinged shaft, the automatic adjusting device comprises a fixed plate, a fixed support, a swing cylinder, a cylinder hinge shaft, a connecting rod, a pin shaft fulcrum shaft and a joint bearing, wherein the fixed plate is fixedly connected with the rotating support, the lower end of the fixed support is fixedly connected with the fixed plate, the upper end of the fixed support is fixedly connected with the cylinder hinge shaft through the bearing, the swing cylinder is fixedly connected with the cylinder hinge shaft, the end part of the telescopic rod of the swing cylinder is connected with the joint bearing through the pin shaft, the upper end of the connecting rod is fixedly connected with the joint bearing, the lower end of the connecting rod is fixedly connected with the fulcrum shaft, when the automatic adjusting device works, logs are positioned through a jaw at the inner end of the machine base, the control device instructs a support hydraulic cylinder, the swing cylinder and the top leaning cylinder to respectively act, so that the upper end of logs abuts against a compression roller, the front side abuts against the top roller, the back side abuts against a rear side of the top roller, the compression roller controls a top cutter core moving guide rail device to gradually drive a top cutter core moving guide rail to gradually move towards a wood cutting knife surface of a wood knife guide rail, and gradually drive the wood cutting knife core moving guide rail to gradually move along a wood cutting rack body, and gradually change along a wood cutting guide rail, the top moving guide rail, the wood cutting knife guide rail gradually and the wood cutting knife moving along a wood cutting machine, the wood cutting guide rail gradually moves gradually; when the thickness of the veneer needs to be adjusted, the control device instructs the telescopic rod of the swing cylinder to extend or contract, so that the connecting rod drives the support shaft to rotate to a set angle by taking the pin shaft as a center, the downward moving distance of the compression roller below the anti-bouncing cross beam reaches the thickness of the veneer, and the outer circles of the compression roller and the top roller are always tangent to the wood core of the log.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710092227.7A CN106738162B (en) | 2017-02-21 | 2017-02-21 | Anti-bending device of numerical control hydraulic double-clamping-shaft rotary cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710092227.7A CN106738162B (en) | 2017-02-21 | 2017-02-21 | Anti-bending device of numerical control hydraulic double-clamping-shaft rotary cutter |
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| Publication Number | Publication Date |
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| CN106738162A CN106738162A (en) | 2017-05-31 |
| CN106738162B true CN106738162B (en) | 2023-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710092227.7A Active CN106738162B (en) | 2017-02-21 | 2017-02-21 | Anti-bending device of numerical control hydraulic double-clamping-shaft rotary cutter |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113635416B (en) * | 2021-09-22 | 2023-01-17 | 山东百圣源集团有限公司 | Veneer rotary-cutting rolling shear device |
| CN114683369B (en) * | 2022-04-21 | 2023-05-26 | 山东百圣源集团有限公司 | Automatic rotary board crushing device for log boards |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3421560A (en) * | 1966-06-27 | 1969-01-14 | Lamb Cargate Ind Ltd | Back-up rolls for veneer lathes |
| US4380259A (en) * | 1981-01-12 | 1983-04-19 | The Coe Manufacturing Company | Veneer lathe apparatus and method using independently adjustable powered back-up roll |
| US4396049A (en) * | 1981-02-05 | 1983-08-02 | Calvert Manufacturing, Inc. | Backup roll arrangement for wood veneer lathe |
| US4506714A (en) * | 1983-04-22 | 1985-03-26 | Sun Studs, Inc. | Veneer lathe |
| US4708180A (en) * | 1984-08-07 | 1987-11-24 | The Coe Manufacturing Company | Large diameter nose bar roll apparatus for veneer lathe with automatic knife gap adjustment during peeling |
| US4791970A (en) * | 1987-12-07 | 1988-12-20 | Walser Donald C | Veneer lathes having veneer thickness sensor and thickness control |
| US4922979A (en) * | 1989-06-02 | 1990-05-08 | Premier Gear & Machine Works | Log core steady rest |
| US5452220A (en) * | 1994-05-05 | 1995-09-19 | The Coe Manufacturing Company | Automatic adjustment of veneer lathe nose bar height relative to knife during peeling |
| CN201279821Y (en) * | 2008-08-27 | 2009-07-29 | 山东百圣源集团有限公司 | Device for preventing bending of numerical control hydraulic double-chucking shaft rotary cutter |
| CN206484690U (en) * | 2017-02-21 | 2017-09-12 | 山东百圣源集团有限公司 | A kind of device for preventing bending of numerical control hydraulic double-chucking shaft rotary cutter |
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2017
- 2017-02-21 CN CN201710092227.7A patent/CN106738162B/en active Active
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