CN101961793A - Tip-extension type deep hole boring cutter rod - Google Patents
Tip-extension type deep hole boring cutter rod Download PDFInfo
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- CN101961793A CN101961793A CN200910023616XA CN200910023616A CN101961793A CN 101961793 A CN101961793 A CN 101961793A CN 200910023616X A CN200910023616X A CN 200910023616XA CN 200910023616 A CN200910023616 A CN 200910023616A CN 101961793 A CN101961793 A CN 101961793A
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Abstract
The invention relates to a tip-extension type deep hole boring cutter rod. A cutter seat (3) is positioned in a cavity between a press cover (1) and a gear installing seat (5), and a screw rod (11) connected with one end of a core shaft (10); a rack (6) is installed in a slot on one end of the core shaft (10); one inner edge of a cutter installing hole needs to be coincide with the symmetric center surface of double-row teeth; a cutter (2) is positioned in the cutter installing hole, and a tip is positioned on a center line of a processed hole; and gears (4) are respectively meshed with the double-row teeth of the rack and the cutter seat. The screw rod is rotated by rotating a handle (14) on the screw rod (11) to drive the core shaft (10) to move, and then the cutter tip is extended by the transmission among a thread pair, the rack, gears and the rack. When retracting, the tip enters the end part of an inner hole of a part; and when the tip extends out, the middle of the part is processed. By adopting a guiding block (9), the rigidity of the cutter rod is ensured, and the cutter rod is provided with axial scales and circumferential scales. The tip-extension type deep hole boring cutter rod is suitable for processing deep holes on both ends of a long-shaft part, wherein the deep holes have small inner diameters at two ends, large inner diameters in the middles and larger difference of diameter sizes.
Description
One, technical field
The present invention relates to the cutter of machining, specifically is the telescopic deep-hole boring cutter bar of a kind of point of a knife.
Two, background technology
Little for the two ends diameter of bore, the middle part diameter of bore is big, and diameter dimension differs bigger longaxones parts deep hole machining cutter, owing to external professional knife company technical know-how reason, can't obtain its technology at present.According to investigation, the domestic boring cutter bar that does not also have to process at present this type of part.
If use fixedly knife bar is processed, point of a knife will enter from part end minor diameter, and radial feed is processed diameter broad in the middle then, the knife bar diameter must be little more a lot of than part end diameter, cause the knife bar draw ratio big, produce vibration, can't carry out machining, influence the processing of major axis part.
Three, summary of the invention
Also not process the two ends diameter of bore at present little in order to overcome exist in the prior art domestic, the middle part diameter of bore is big, and diameter dimension differs the deficiency of the boring cutter bar of bigger longaxones parts deep hole machining, the present invention proposes the telescopic deep-hole boring cutter bar of a kind of point of a knife.
The present invention includes outer knife bar system, interior transmission system and cooling system.
Outer knife bar system comprises gland, gear mount pad, outer knife bar, first copper sheathing, second copper sheathing, guide pad, bearing block and two baffle plates.
One end of gear mount pad is useful on the connecting hole that the gear mount pad is connected with outer knife bar; Center at gear mount pad other end end face has the two-stage step trough vertically; The width of first order step trough is with the width of tool rest, and length is with the length of tool rest; The width of second level step trough is greater than the outer peripheral width of double tooth bar of tool rest one end, and length is less than the length 3mm of the rack bar of double tooth bar.The via hole that the tooth bar that connects with gear mount pad one end endoporus is arranged in the bottom land center of step trough; On the hole wall of tooth bar via hole, the installing hole of the gear that connects gear mount pad hole wall is arranged; The axis normal of gear installing hole is in the cell wall of step trough, and the installing hole of this gear is positioned at axis one side of gear mount pad at the axis of the position deviation gear mount pad of gear mount pad circumferential surface; The distance that the installing hole of gear departs from the axis of gear mount pad must satisfy gear respectively with tooth bar and the engagement of tool rest double rows of teeth.On the cell wall of the step trough endoporus of installing hole one side of gear, the cooling fluid through hole that connects cell wall is arranged, this through hole one end is positioned at the connecting hole that is connected with outer knife bar, and the other end is positioned at the inferior horn of step trough endoporus cell wall.
First copper sheathing and second copper sheathing are installed in respectively in the endoporus at outer knife bar two ends.The endoporus of first copper sheathing and second copper sheathing is respectively with the external diameter at mandrel two ends.
The guide pad curved surfaces radius with the radius of part to be processed datum hole, and the curved surfaces of guide pad and part to be processed datum hole matched in clearance.
One end of bearing block and an end of outer knife bar are by being threaded, and the other end of bearing block is equipped with bearing.
The endoporus at outer knife bar two ends respectively with first copper sheathing and the second copper sheathing interference fit; Outer knife bar middle part endoporus is the via hole of mandrel.Outer knife bar cooperates the connecting hole interference fit of an end and gear mount pad with first copper sheathing; Outer knife bar and the second copper sheathing abutting end and bearing block are by being threaded; Lathe boring cutter cover for seat is contained on the section of cooperation of outer knife bar and the lathe boring cutter seat endoporus of bearing block adjacent.Guide pad be positioned at outer knife bar adjacent with the gear mount pad one section to the isometrical cylindrical at the section of the cooperation place of lathe boring cutter seat endoporus; When processing work should be satisfied in the position that the fitting key slot pitch of first guide pad is positioned at the point of a knife at cutter place, guide pad is in the datum hole of workpiece all the time; When the distance between the center of the center of first guide pad and second guide pad also should satisfy processing work, there is one group of guide pad to be in all the time in the datum hole of workpiece.
First baffle plate and second baffle are installed in the bottom land of gear mount pad second level step trough; The radius of first baffle plate and second baffle arc-shaped surface is with gear mount pad exradius, and its width and thickness are respectively with the width and the degree of depth of gear mount pad second level step trough.
During assembling, gland is fixed on the end face of gear mount pad one end step trough; The surface of cavity has formed the sliding rail of tool rest between gland and the gear mount pad.
Interior transmission system comprises handwheel, screw rod, mandrel, tooth bar, gear, copper sheathing, tool rest and cutter.
The endoporus of screw rod is used for coolant flow; One end of screw rod and an end of mandrel are by being threaded; The interior bearing of screw rod middle part and bearing block cooperates.The maximum outside diameter of screw rod is with the external diameter of bearing block, and is carved with graduation mark on the maximum outside diameter cylindrical.The outer surface of the screw rod other end is fixedlyed connected with handwheel by key, and the endoporus of this end of screw rod and swivel joint are by being threaded.
The coolant flow hole of the endoporus of mandrel for connecting.
Mandrel one end cross-section center has along the mounting groove of the tooth bar of the impossible font of the axis direction extension of mandrel; The notch both sides of this tooth bar mounting groove are the plane; The length of tooth bar mounting groove and width are all with the length and the width of tooth bar mounting rod.The two ends of mandrel lay respectively in first copper sheathing and second copper sheathing, and all and between first copper sheathing and second copper sheathing are slidingly matched.The abutting end of mandrel and second copper sheathing and screw rod are by being threaded.The aperture of the adjacent end with the tooth bar mounting groove of the endoporus of mandrel blocks with the plug welding.Have the cooling liquid outlet hole parallel on the next door, aperture with the mandrel endoporus.
One end of tooth bar is a mounting rod, and the impossible font tooth bar mounting groove on its length and width and the mandrel adapts.The other end of tooth bar is a tooth bar, this rack and pinion engagement.The surface of the tooth bar of tooth bar and mounting rod adjoiner is step-like, and the side surface of this step and the end face of mandrel are fitted; The stepped surfaces of tooth bar is positioned on the plane of symmetry of tooth bar.
Tool rest is installed in the cavity of gland 1 and the formation of gear mount pad; In a side of the tool rest termination of arranging the rack bar of tooth is arranged, and the direction of rack bar termination tooth has formed double rows of teeth with the axis direction of tooth bar; Width between the adjacent limit of double rows of teeth can stretch between the double rows of teeth when tooth bar moves greater than the width of tooth bar.The surface of the tool rest adjacent with double rows of teeth place face the cutter installing hole that connects tool rest is arranged, and an inner edge of this installing hole must overlap with double rows of teeth symmetrical centre face.There is higher precision on four surfaces of other of tool rest, and as the slide rail of tool rest, the slideway that forms with gland 1 and gear mount pad cooperates.With pack into installing hole on the tool rest of cutter, and the point of a knife of cutter is positioned on the center line in processed hole.
Gear respectively with tooth bar and tool rest on double rows of teeth engagement, and, realize cutter point of a knife Telescopic by the transmission between the double rows of teeth on screw thread pair, wheel and rack and the tool rest.
Swivel joint one end of cooling system is connected with an end of screw rod; The swivel joint other end is connected with hose coupling; The flexible pipe other end is connected with the coolant pump outlet connection, for point of a knife provides cooling.
During work, rotation hand wheel, handwheel drive the screw rod rotation, by the screw thread pair transmission, mandrel moves vertically, the tooth bar that drive is mounted thereon moves axially, rack wheel, and gear rotates, gear drive tool rest upper rack, it is flexible in slideway to promote tool rest, and cutter is installed on the tool rest, promptly realizes the Telescopic of cutter point of a knife.Be provided with axial scale outside on the knife bar, be provided with the circumferencial direction scale on screw rod, axially the every lattice of scale are represented the point of a knife 1mm that stretches, and the every lattice of circumferencial direction scale are represented the point of a knife 0.02mm that stretches.
The advantage of the invention is: the cutter point of a knife is scalable.In point of a knife when withdrawal,, the bore ends minor diameter enters in the part, stretches out endoporus major diameter in the middle of the point of a knife processing then.The knife bar diameter is than smaller the getting final product of part endoporus end diameter, and the carbide alloy guide pad plays guiding and supporting role, has guaranteed the rigidity of knife bar, and machining state is stable.Rotation hand wheel, flexible by transmission system control point of a knife, be provided with axially and two groups of scales of circumferencial direction, the every lattice of circumferencial direction scale are represented the point of a knife 0.02mm that stretches, and the axial every lattice of scale are represented the point of a knife 1mm that stretches, and use easy to operate.Because mechanical type transmission, low cost of manufacture are adopted in the invention.
The invention is the boring cutter bar that the longaxones parts deep hole machining is used, and is installed on the horizontal digital-control lathe, is applicable to that processing major axis part two ends diameter of bore is little, and the middle part diameter of bore is big, and diameter dimension differs bigger deep hole.
Four, description of drawings
Accompanying drawing 1 is a structural representation of the present invention,
Accompanying drawing 2 is accompanying drawing 1 cutter head part partial enlarged drawings,
Accompanying drawing 3 is cutter head part partial enlarged drawings of the present invention,
Accompanying drawing 4 is top plan view of the telescopic deep-hole boring cutter bar of point of a knife structural representation,
Accompanying drawing 5 is structural representations of outer knife bar system,
Accompanying drawing 6 is top plan view of interior drive system structure schematic diagram,
Accompanying drawing 7 is structural representations of interior transmission system,
Accompanying drawing 8 is structural representations (top plan view) of interior transmission system,
Accompanying drawing 9 is structural representations of tool rest,
Accompanying drawing 10 is vertical views of tool rest structural representation,
Accompanying drawing 11 is structural representations of gear mount pad,
Accompanying drawing 12 is left views of gear mount pad structural representation,
Accompanying drawing 13 is vertical views of gear mount pad structural representation,
Accompanying drawing 14 is structural representations of bearing block,
Accompanying drawing 15 is structural representations of outer knife bar,
Accompanying drawing 16 is vertical views of outer lever structure schematic diagram,
Accompanying drawing 17 is that outer knife bar is installed guide pad place cutaway view,
Accompanying drawing 18 is mandrel structural representations,
Accompanying drawing 19 is left views of mandrel structural representation,
Accompanying drawing 20 is structural representations of gear,
Accompanying drawing 21 is structural representations of tooth bar,
Accompanying drawing 22 is vertical views of rack structure schematic diagram,
Accompanying drawing 23 is structural representations of screw rod,
Accompanying drawing 24 is structural representations of first baffle plate,
Accompanying drawing 25 is structural representations of second baffle.Wherein:
1. gland 2. cutters 3. tool rests 4. gears 5. gear mount pads 6. tooth bars
7. first copper sheathing, 8. outer knife bar 9. guide pads 10. mandrels 11. screw rods 12. second copper sheathings
13. bearing block 14. handwheels 15. swivel joints 16. flexible pipes 17. copper sheathings 18. first baffle plates
19. second baffle
Five, the specific embodiment
Present embodiment is the telescopic deep-hole boring cutter bar that is used to process certain longaxones parts deep hole, comprises outer knife bar system, interior transmission system and cooling system.
Outer knife bar system comprises gland 1, gear mount pad 5, outer knife bar 8, first copper sheathing 7, second copper sheathing 12, guide pad 9, bearing block 13, first baffle plate 18 and second baffle 19.
Shown in accompanying drawing 11, accompanying drawing 12 and accompanying drawing 13.Gear mount pad 5 is the circular turned body.An end of gear mount pad 5 be useful on gear mount pad 5 with outside the connecting hole that is connected of knife bar 8; This connecting hole is an endoporus, and its internal diameter is with the external diameter of outer knife bar 8 one end end cylinders; On the hole wall of connecting hole, be evenly distributed with the sunk screw hole.Center at gear mount pad 5 other end end faces processes the two-stage step trough vertically; The width of first order step trough is with the width of tool rest 3, and the length of first order ladder is with the length of tool rest 3; The width of second level step trough is installed with convenient double tooth bar greater than the outer peripheral width of double tooth bar of tool rest 3 one ends; The length of second level step trough is less than the length 2mm of the rack bar of double tooth bar.Bottom land center at step trough processes endoporus, and the endoporus of this endoporus and gear mount pad 5 one ends connects; This endoporus is the via hole of tooth bar 6.On the via hole hole wall of tooth bar 6, the installing hole of the gear 4 that connects gear mount pad 5 hole walls is arranged; The axis normal of the installing hole of gear 4 is in the cell wall of step trough; The installing hole of gear 4 is positioned at axis one side of gear mount pad 5 at the axis of the position deviation gear mount pad 5 of gear mount pad 5 circumferential surfaces; The distance that the installing hole of gear 4 departs from must satisfy gear 4 and mesh with tooth bar 6 and tool rest 3 double rows of teeth respectively.At the installing hole two ends of gear 4, the installing hole internal circular surfaces of rim gear wheel 4 is processed with the collar groove, is used to install collar.On the cell wall of the step trough endoporus of installing hole one side of gear 4, the cooling fluid through hole that connects cell wall is arranged, this through hole one end is positioned at the connecting hole that is connected with outer knife bar 8, and the other end is positioned at the inferior horn of step trough endoporus cell wall.On the end face of step trough symmetry cell wall, be processed with two connecting holes that are connected with gland 1 respectively, between two connecting holes, dowel hole is arranged; The connecting hole on the connecting hole on the step trough symmetry cell wall end face and the position of dowel hole and the gland 1 and the position of dowel hole are corresponding.At the outer rim place of second level step trough bottom land, be symmetrily processed with two groups of connecting holes of first baffle plate 18 and second baffle 19, and first baffle plate 18 and second baffle 19 connecting hole positions are corresponding with the position of the connecting hole of first baffle plate 18 and second baffle 19 respectively.
The surface of guide pad 9 is a cuboid, and one of them surface is an arc; The radius of this arc is with the radius of part to be processed datum hole, and the curved surfaces of guide pad 9 and part to be processed datum hole matched in clearance.The center of guide pad 9 have with keyway is installed in the screw hole that cooperates of screwed hole.
As shown in Figure 14.Bearing block 13 is sleeves, and endoporus is step-like.Bearing block 13 1 ends are the internal thread hole that cooperates with outer knife bar 8 one end external screw threads, and two taper roll bearings are installed in the other end endoporus; At bearing block 13 endoporus middle part, the ring internal circular surfaces has boss, is used for the axial location of bearing; At an end of the bearing mounting hole of bearing block 13, collar bearing installing hole internal circular surfaces is processed with the collar groove, is used to install collar.
Shown in accompanying drawing 15, accompanying drawing 16 and accompanying drawing 17.Outer knife bar 8 is a circular sleeve.The internal diameter at outer knife bar 8 endoporus two ends is greater than the internal diameter at middle part; The internal diameter of outer knife bar 8 one ends is with the external diameter of first copper sheathing 7; First copper sheathing 7 is loaded in the endoporus of outer knife bar 8, and interference fit between the two; The internal diameter of outer knife bar 8 other ends is with the external diameter of second copper sheathing 12; Second copper sheathing 12 is loaded in the endoporus of outer knife bar 8, and interference fit between the two.Outer knife bar 8 endoporus middle part is isometrical hole, and its internal diameter is greater than the maximum outside diameter of mandrel 10; The isometrical hole at outer knife bar 8 endoporus middle part is the via hole of mandrel 10.
The external diameter of outer knife bar 8 also is step-like.Outer knife bar 8 is equipped with the internal diameter of the external diameter of first copper sheathing, 7 one ends with gear mount pad 5 one end connecting holes; Outer knife bar 8 is positioned at the connecting hole of gear mount pad 5, and the connecting hole interference fit of outer knife bar 8 and gear mount pad 5; On the excircle of knife bar 8, be evenly distributed with 4 screwed holes outside, be used for outer knife bar 8 being tightened up with gear mount pad 5 by screw.It is external screw thread that outer knife bar 8 is equipped with second copper sheathing, 12 1 ends, and this external screw thread is connected with bearing block 13 internal threads; On the screw thread on the excircle of knife bar 8, be evenly distributed with 4 screwed holes outside, be used for outer knife bar 8 being tightened up with bearing block 13 by screw.
As shown in Figure 24.The surface of first baffle plate 18 is a cuboid, and one of them surface is an arc; The radius of this arc is with gear mount pad 5 exradius, the width of first baffle plate 18 and thickness are respectively with the width and the degree of depth of gear mount pad 5 second level step troughs, the height dimension of first baffle plate 18 should satisfy when the point of a knife of cutter 2 stretches out maximum, tool rest 3 and first baffle plate, 18 bonding surfaces can not be thrown off, when the point of a knife of cutter 2 was withdrawn minimum of a value, the long straight flange of first baffle plate 18 and the rack bar of tool rest 3 were not interfered.Two countersunk head connecting holes are arranged on first baffle plate 18, and the connecting hole position is corresponding with the position of the connecting hole of the bottom land of the second level step trough of gear mount pad 5.
As shown in Figure 25.The surface of second baffle 19 is a cuboid, and one of them surface is an arc; The radius of this arc is with gear mount pad 5 exradius, the width of second baffle 19 and thickness are respectively with the width and the degree of depth of gear mount pad 5 second level step troughs, the height dimension of second baffle 19 should satisfy when the point of a knife of cutter 2 stretches out maximum, the long straight flange of second baffle 19 and the rack bar of tool rest 3 are not interfered, when the point of a knife of cutter 2 was withdrawn minimum of a value, tool rest 3 can not be thrown off with second baffle 19 bonding surfaces.Two countersunk head connecting holes are arranged on the second baffle 19, and the connecting hole position is corresponding with the position of the connecting hole of the bottom land of the second level step trough of gear mount pad 5.
During assembling, gland 1 links together by screw and straight pin with gear mount pad 5; The surface of cavity has formed the slip of tool rest 3 between gland 1 and the gear mount pad 5; First baffle plate 18 and second baffle 19 are installed in respectively in gear mount pad 5 second level step troughs, and fix by screw; Gear mount pad 5 connects by screw by endoporus and outer knife bar 8 one end cylindrical interference fit; Bearing block 13 cooperates with outer knife bar 8 other end external screw threads by inner hole thread, connects by screw; First copper sheathing 7 and second copper sheathing 12 by external diameter respectively with outer knife bar 8 two ends endoporus interference fit; Guide pad 9 is installed in the outer knife bar 8 external diameter keyways, connects by screw.Outer knife bar is that interior transmission system plays guiding and supporting role.
Interior transmission system comprises handwheel 14, screw rod 11, mandrel 10, tooth bar 6, gear 4, tool rest 3, cutter 2 and copper sheathing 17.
As shown in Figure 23.Screw rod 11 is hollow step axle, and the endoporus perforation, is used for coolant flow.One end of screw rod 11 is the external screw thread with mandrel 10 1 end screw-internal thread fit; The external diameter at screw rod 11 middle parts cooperates with bearing bore diameter in being installed in bearing block 13.With the bearing adjacent, the cylindrical of screw rod 11 is stepped, this ladder is to the bearing axial limiting.The maximum outside diameter of screw rod 11 is positioned at spacing ladder one side, and this maximum outside diameter is with the external diameter of bearing block 13, and is carved with graduation mark on the maximum outside diameter cylindrical.The external diameter of screw rod 11 other ends is with the internal diameter of handwheel 14, and on the excircle at screw rod 11 these places keyway arranged, and by this keyway, screw rod 11 is fixedlyed connected with handwheel 14.The endoporus of screw rod 11 these ends is an internal thread, cooperates with the external screw thread of swivel joint 15.
Shown in accompanying drawing 18 and accompanying drawing 19.Mandrel 10 is hollow step axle, the coolant flow hole of its endoporus for connecting.The cross-section center of mandrel 10 1 ends has the impossible font tooth bar mounting groove that extends along mandrel 10 axis directions, is used to install tooth bar 6; The notch both sides of these tooth bar 6 mounting grooves are the plane; The length of tooth bar 6 mounting grooves and width are all with the length and the width of tooth bar 6 mounting rods.Bottom land at tooth bar 6 mounting grooves is distributed with screwed hole and pin-and-hole, is used for fixing tooth bar 6.The external diameter of mandrel 10 is with the internal diameter of first copper sheathing 7; Mandrel 10 is positioned at first copper sheathing 7, and is slidingly matched between the two.The endoporus of mandrel 10 other ends is an internal thread hole, is used for cooperating with the external screw thread of screw rod 11.The external diameter of this end mandrel 10 is with the internal diameter of second copper sheathing 12; Mandrel 10 is positioned at second copper sheathing 12, and is slidingly matched between the two.On the excircle of this end mandrel 10 symmetry be distributed with pin-and-hole, be used to install straight pin; The position of this straight pin is corresponding with the position of outer knife bar 8 one end grooves.Mandrel 10 interlude diameters are more smaller than two ends diameter, so that mandrel cooperates with first copper sheathing 7 and second copper sheathing 12.The aperture of the adjacent end with the tooth bar mounting groove of the endoporus of mandrel 10 blocks with the plug welding.Have the cooling liquid outlet hole parallel on the next door, aperture with mandrel 10 endoporus.
Shown in accompanying drawing 21 and accompanying drawing 22.One end of tooth bar 6 is a mounting rod, and the impossible font tooth bar mounting groove on its length and width and the mandrel 10 adapts.The other end of tooth bar 6 is a tooth bar, these rack and pinion 4 engagements.The surface of the tooth bar of tooth bar 6 and mounting rod adjoiner is step-like, and the end face of the side surface of this step and mandrel 10 is fitted; The stepped surfaces of tooth bar 6 is positioned on the plane of symmetry of tooth bar.Be distributed with connecting hole and pin-and-hole on the mounting rod of tooth bar 6, be used for tightening up and locating of tooth bar 6 and mandrel 10.
As shown in Figure 20.Gear 4 is a roller gear; The shaft shoulder that usefulness is installed is arranged at the two ends of gear 4, and shaft shoulder size is with copper sheathing 17 internal diameters, and is slidingly matched with copper sheathing 17 internal diameters.And gear 4 is installed in the installing hole of gear mount pad 5 by copper sheathing 17.Gear 4 respectively with tooth bar 6 and tool rest 3 on double rows of teeth engagement.
Shown in accompanying drawing 9 and accompanying drawing 10.Tool rest 3 profiles are square, are positioned at the cavity that gland 1 and gear mount pad 5 form.Side at tool rest 3 is placed with rack bar, and the termination of rack bar is a tooth; The arragement direction of tooth has formed double rows of teeth with the axis direction of tooth bar 6; Width between the adjacent limit of double rows of teeth can stretch between the double rows of teeth when tooth bar 6 moves greater than the width of tooth bar 6.The surface of the tool rest 3 adjacent with double rows of teeth place face the installing hole of the cutter 2 that connects tool rest 3 is arranged, and an inner edge of this installing hole must overlap with double rows of teeth symmetrical centre face.There is higher precision on four surfaces of other of tool rest 3, and as the slide rail of tool rest 3, the slideway that forms with gland 1 and gear mount pad 5 cooperates.With pack into installing hole on the tool rest 3 of cutter 2, and the point of a knife of cutter 2 is positioned on the center line in processed hole; On the tool rest above the point of a knife of cutter 23, have the countersunk head screwed hole that connects with the cutter installing hole, and by screw in compression cutter 2.
Handwheel 14 selection standard spares.Cutter 2 selects for use indexable machine to add formula endoporus boring cutter.
During assembling, handwheel 14 is connected by key with screw rod 11 cylindricals, and screw rod 11 is connected with mandrel 10 1 end internal threads by external screw thread; Tooth bar 6 is installed in mandrel 10 another end slots, is connected with straight pin by screw; Cutter 2 is installed in tool rest 3 holes, tightens up with screw; Tool rest 3 is installed in the cubic slideway of gland 1 and 5 formation of gear mount pad, and gear 4 is installed in gear mount pad 5 holes by copper sheathing 17.Interior transmission system realizes cutter point of a knife Telescopic by screw thread pair, tooth bar, gear, tooth bar transmission.Screw rod 11 endoporus and mandrel 10 endoporus connect, and are used for coolant flow.
Cooling system comprises swivel joint 15 and flexible pipe 16.Swivel joint 15 is selected the unidirectional swivel joint that is threaded for use.Flexible pipe 16 is selected Q type joint braided steel wire flexible pipe for use.
During assembling, the external screw thread of swivel joint 15 1 ends is connected with screw rod 11 1 end internal threads; Swivel joint 15 other end external screw threads are connected with flexible pipe 16 joints; Flexible pipe 16 other ends are connected with the coolant pump outlet connection, for point of a knife provides cooling.
In boring cutter bar when assembling,, screw rod 11 is installed in bearing block 13 holes in the outer knife bar system by bearing and collar, with nut and positioning sleeve bearing is axially fastened at screw rod 11; Mandrel 10 is installed in first copper sheathing 7 and second copper sheathing, 12 holes by the two ends cylindrical, is slidingly matched with first copper sheathing 7 and second copper sheathing, 12 endoporus, is connected in outer knife bar 8 anti-rotation grooves by two straight pins, and straight pin restriction mandrel 10 rotates.Gear 4 is installed in gear mount pad 5 holes in the outer knife bar system by copper sheathing and collar, and gear 4 requires to rotate flexibly; Tool rest 3 is installed in the cubic slideway that is formed by gland 1 and gear mount pad 5 in the outer knife bar system, and tool rest 3 slide rails and cubic slideway are slidingly matched.
During work, rotation hand wheel 14, handwheel drives screw rod 11 rotations, by the screw thread pair transmission, mandrel 10 moves vertically, the tooth bar 6 that drive is mounted thereon moves axially, rack wheel 4, gear 4 rotates gear 4 transmission tool rests 3 upper racks, it is flexible in slideway to promote tool rest 3, cutter 2 is installed on the tool rest 3, promptly realizes the Telescopic of cutter 2 points of a knife. and be provided with axial scale on the knife bar 8 outside, on screw rod 11, be provided with the circumferencial direction scale, axially the every lattice of scale are represented the point of a knife 1mm that stretches, and the every lattice of circumferencial direction scale are represented the point of a knife 0.02mm that stretches.
Claims (10)
1. the telescopic deep-hole boring cutter bar of point of a knife is characterized in that, the telescopic deep-hole boring cutter bar of described point of a knife comprises outer knife bar system, interior transmission system and cooling system, wherein,
I. outer knife bar system comprises gland (1), gear mount pad (5), outer knife bar (8), first copper sheathing (7), second copper sheathing (12), guide pad (9), bearing block (13), first baffle plate (18) and second baffle (19), and
A. an end of gear mount pad (5) is useful on the connecting hole that gear mount pad (5) is connected with outer knife bar (8); Center at gear mount pad (5) other end end face has the two-stage step trough vertically; The width of the same tool rest of the width of first order step trough (3), the length of the same tool rest of length (3); The width of second level step trough is greater than the outer peripheral width of double tooth bar of tool rest 3 one ends, and length is less than the length 3mm of the rack bar of double tooth bar; The via hole that the tooth bar 6 that connects with gear mount pad (5) one end endoporus is arranged in the bottom land center of step trough; On the hole wall of tooth bar 6 via holes, the installing hole of the gear (4) that connects gear mount pad (5) hole wall is arranged;
B. the axis normal of gear (4) installing hole is in the cell wall of step trough, and the installing hole of this gear (4) is positioned at axis one side of gear mount pad (5) at the axis of the position deviation gear mount pad (5) of gear mount pad (5) circumferential surface; The distance that the installing hole of gear (4) departs from must satisfy gear (4) and mesh with tooth bar 6 and tool rest (3) double rows of teeth respectively;
C. on the cell wall of the step trough endoporus of installing hole one side of gear (4), the cooling fluid through hole that connects cell wall is arranged, this through hole one end is positioned at the connecting hole that is connected with outer knife bar (8), and the other end is positioned at the inferior horn of step trough endoporus cell wall;
D. first copper sheathing (7) and second copper sheathing (12) are installed in respectively in the endoporus at outer knife bar (8) two ends; The endoporus of first copper sheathing (7) and second copper sheathing (12) respectively with external diameter with mandrel 10 two ends;
E. guide pad (9) curved surfaces radius with the radius of part to be processed datum hole, and the curved surfaces of guide pad (9) and part to be processed datum hole matched in clearance;
F. an end of bearing block (13) and an end of outer knife bar (8) are by being threaded, and the other end of bearing block (13) is equipped with bearing;
The endoporus at g. outer knife bar (8) two ends respectively with first copper sheathing (7) and second copper sheathing (12) interference fit; Outer knife bar (8) middle part endoporus is the via hole of mandrel (10); Outer knife bar (8) cooperates the connecting hole interference fit of an end and gear mount pad (5) with first copper sheathing (7); Outer knife bar (8) and second copper sheathing, 12 abutting ends and bearing block 13 are by being threaded; Lathe boring cutter cover for seat is contained on the section of cooperation of outer knife bar (8) and the lathe boring cutter seat endoporus of bearing block (13) adjacent;
H. guide pad (9) be positioned at outer knife bar (8) adjacent with gear mount pad (5) one section to the isometrical cylindrical at the section of the cooperation place of lathe boring cutter seat endoporus; When processing work should be satisfied in the position that the fitting key slot pitch of first guide pad is positioned at the point of a knife that cutter (2) locates, guide pad is in the datum hole of workpiece all the time; When the distance between the center of the center of first guide pad and two guide pad also should satisfy processing work, there is one group of guide pad to be in all the time in the datum hole of workpiece;
I. gland (1) is fixed on the end face of gear mount pad (5) one end step troughs; Tool rest (3) is positioned at the cavity between gland (1) and the gear mount pad (5);
II. interior transmission system comprises handwheel (14), screw rod (11), mandrel (10), tooth bar (6), gear (4), copper sheathing (17), tool rest (3) and cutter (2), and
A. an end of screw rod (11) and an end of mandrel (10) are by being threaded; The interior bearing of screw rod (11) middle part and bearing block (13) cooperates; The outer surface of screw rod (11) other end is fixedlyed connected with handwheel (14) by key, and the endoporus of this end of screw rod (11) is connected with swivel joint (15);
B. mandrel (10) one end cross-section center have the mounting groove of the tooth bar (6) of the impossible font that extends along mandrel (10) axis direction, and the notch both sides of this tooth bar (6) mounting groove are the plane; The length and the width of the length of tooth bar (6) mounting groove and all same tooth bar of width (6) mounting rod; The two ends of the mandrel (10) of mandrel (10) lay respectively in first copper sheathing (7) and second copper sheathing (12), and all and between first copper sheathing (7) and second copper sheathing (12) are slidingly matched; Mandrel (10) is connected with screw rod (11) with the abutting end of second copper sheathing (12); The aperture sealing of the adjacent end with the tooth bar mounting groove of the endoporus of mandrel (10) has and the parallel cooling liquid outlet hole of mandrel (10) endoporus on the next door, aperture;
C. the impossible font tooth bar mounting groove on the length of tooth bar (6) mounting rod and width and the mandrel (10) adapts; Tooth bar (6) and gear (4) engagement;
D. tool rest (3) is installed in the cavity of gland (1) and gear mount pad (5) formation; The axis direction of the same tooth bar of direction (6) of the double rows of teeth of tool rest (3) one sides; Width between the adjacent limit of double rows of teeth is greater than the width of tooth bar (6); There is the cutter installing hole on another surface of tool rest (3), between the axis of this cutter installing hole and the double rows of teeth formed vertical, and an inner edge of this cutter installing hole must overlap with double rows of teeth symmetrical centre face; Cutter (2) is positioned at the cutter installing hole, and the point of a knife of cutter (2) is positioned on the center line in processed hole;
E. gear 4 respectively with tooth bar (6) and tool rest (3) on double rows of teeth engagement;
III. swivel joint (15) one ends of cooling system are connected with an end of screw rod (11); Swivel joint (15) other end is connected with flexible pipe (16) joint; Flexible pipe (16) other end is connected with the coolant pump outlet connection, for point of a knife provides cooling.
2. the telescopic deep-hole boring cutter bar of a kind of according to claim 1 point of a knife is characterized in that, the bottom land of tooth bar (6) mounting groove on the described mandrel (10) is distributed with screwed hole and pin-and-hole; The connecting hole and the pin-and-hole that distribute on tooth bar (6) and the mounting rod of mandrel (10) by tooth bar (6) tighten up and locate.
3. the telescopic deep-hole boring cutter bar of a kind of according to claim 1 point of a knife is characterized in that the endoporus of the endoporus of described screw rod (11) and mandrel (10) is the coolant flow hole; The external diameter of the same bearing block of maximum outside diameter (13) of screw rod (11), and on the maximum outside diameter cylindrical, be carved with graduation mark.
4. the telescopic deep-hole boring cutter bar of a kind of according to claim 1 point of a knife is characterized in that, the connecting hole on the connecting hole on the described step trough symmetry cell wall end face and the position of dowel hole and the gland (1) and the position of dowel hole are corresponding.
5. the telescopic deep-hole boring cutter bar of a kind of according to claim 1 point of a knife is characterized in that, described center at guide pad (9) have with keyway is installed in the screw hole that cooperates of screwed hole.
6. the telescopic deep-hole boring cutter bar of a kind of according to claim 1 point of a knife is characterized in that, is evenly distributed with screwed hole on the excircle of described outer knife bar (8), by this screwed hole outer knife bar (8) is tightened up with gear mount pad (5) and bearing block (13) respectively; The groove of the symmetry that prevents that mandrel (10) from rotating around self axis is arranged on the excircle of outer knife bar (8), and the periphery of a groove is the plane therein, and is carved with graduation mark on this plane; Two groups of keyways that are used to install guide pad (9) are arranged on the excircle of outer knife bar (8), and on two cross sections laying respectively at of the installation keyway of two groups of guide pads (9); First baffle plate (18) and second baffle (19) are installed in respectively in the second level step trough of gear mount pad (5).
7. the telescopic deep-hole boring cutter bar of a kind of according to claim 1 point of a knife is characterized in that, described double rows of teeth is in a side of tool rest (3) termination of arranging the rack bar of tooth to be arranged.
8. the telescopic deep-hole boring cutter bar of a kind of according to claim 1 point of a knife, it is characterized in that, described guide pad (9) is fixed in the installation keyway on the isometrical cylindrical of outer knife bar (8), and the length of keyway and width are installed are all adapted with the length and the width of guide pad (9).
9. as the telescopic deep-hole boring cutter bar of a kind of point of a knife as described in the claim 6, it is characterized in that described installation keyway is evenly distributed on the circumference of outer knife bar (8).
10. as the telescopic deep-hole boring cutter bar of a kind of point of a knife as described in the claim 6, it is characterized in that the side surface of the tooth bar of described tooth bar (6) and mounting rod adjoiner step and the end face of mandrel 10 are fitted; The stepped surfaces of tooth bar (6) is positioned on the plane of symmetry of tooth bar.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910023616XA CN101961793B (en) | 2009-08-18 | 2009-08-18 | Tip-extension type deep hole boring cutter rod |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910023616XA CN101961793B (en) | 2009-08-18 | 2009-08-18 | Tip-extension type deep hole boring cutter rod |
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| CN101961793A true CN101961793A (en) | 2011-02-02 |
| CN101961793B CN101961793B (en) | 2012-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910023616XA Active CN101961793B (en) | 2009-08-18 | 2009-08-18 | Tip-extension type deep hole boring cutter rod |
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| CH417228A (en) * | 1962-08-23 | 1967-01-31 | George Richards & Company Limi | Apparatus for damping the vibrations of a body |
| US4516889A (en) * | 1982-09-07 | 1985-05-14 | Devlieg Machine Company | Precision adjustable cutting tool |
| DE4143450C2 (en) * | 1990-12-03 | 1995-08-17 | Romi Ind | Fine boring tool, especially for through holes |
| CN1076880A (en) * | 1992-04-03 | 1993-10-06 | 窦迎峰 | Elliptic boring cutter |
| CN1284647C (en) * | 2004-08-19 | 2006-11-15 | 陈硕 | Radial feeding slot boring cutter |
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