CN113263216B

CN113263216B - Lathe for spline sleeve broaching

Info

Publication number: CN113263216B
Application number: CN202110627873.5A
Authority: CN
Inventors: 王文飞
Original assignee: Hangzhou Ludi Machinery Co ltd
Current assignee: Hangzhou Ludi Machinery Co ltd
Priority date: 2021-06-05
Filing date: 2021-06-05
Publication date: 2022-06-14
Anticipated expiration: 2041-06-05
Also published as: CN113263216A

Abstract

The application relates to a lathe for spline housing broaching, and relates to the technical field of spline housing production; the automatic broaching machine comprises a rack, a workbench and a broaching tool, wherein the workbench and the broaching tool are positioned on the rack; the workbench is also provided with a cooling ring pipe, the cooling ring pipe is positioned on the periphery of the workpiece and the broach, a liquid outlet is formed in the side wall of the cooling ring pipe facing the broach along the circumferential direction of the side wall, and the side wall of the cooling ring pipe is communicated with a supply device for supplying cooling liquid to the cooling ring pipe; this application has the effect to broach cooling, extension broach life and the garland quality of assurance broach.

Description

Lathe for spline sleeve broaching

Technical Field

The application relates to the technical field of spline housing production, especially, relate to a lathe for spline housing draws flower.

Background

The spline connection is composed of a spline shaft and a spline housing, the spline housing is sleeved outside the spline shaft, the spline shaft and the spline housing are used for transmitting mechanical torque, a longitudinal key groove is formed in the outer surface of the spline shaft, and a key groove corresponding to the key groove outside the spline shaft is formed in the inner wall of the spline housing so as to realize synchronous rotation of the spline shaft and the spline housing; the broaching machine is a device for broaching the internal keyway of the spline housing.

A related Chinese patent with publication number CN201760660U discloses a screw rod type vertical internal broaching machine, which comprises a machine body, a workbench, a broaching tool, a lower clamping tool body and a lifting tool device, wherein the workbench, the broaching tool, the lower clamping tool body and the lifting tool device are positioned in the machine body, the lower clamping tool body and the lifting tool device are respectively arranged at the position right below and right above the workbench, a workpiece fixing device is arranged on the workbench, at least one screw rod and at least one guide rod are vertically arranged in the machine body, the screw rod is inserted into the workbench through threads, the guide rod penetrates through the workbench, and a screw rod driving device for driving the screw rod to rotate is also arranged in the machine body; before processing, a workpiece is fixed on a workbench through a workpiece fixing device, then a broach is driven to move downwards through a broach device, the lower end of the broach penetrates through the workpiece and the fixing platform and is fixedly connected to a lower clamping cutter body, the broach device is separated from the upper end of the broach, then the workbench is driven to move upwards through a lead screw driving device, and in the process of moving upwards on the workbench, the broaching on the inner wall of the workpiece is realized through tool marks on the outer surface of the broach.

In view of the above related technologies, the inventor believes that after the broach broaches the inner wall of the workpiece for a long time, the broach is prone to generate heat due to friction between the broach and the inner wall of the workpiece, and further the broach is subjected to thermal deformation or wear, which affects the broaching quality and the service life of the broach, and therefore needs to be improved.

Disclosure of Invention

In order to improve the broach and use after long-time the life who influences the broaching quality and broach by thermal deformation, this application provides a lathe for spline housing broaching.

The application provides a lathe for spline housing draws flower adopts following technical scheme:

a lathe for spline sleeve broaching comprises a rack, a workbench and a broaching tool, wherein the workbench and the broaching tool are positioned on the rack; the cooling ring pipe is arranged on the periphery of the workpiece and the broach, a liquid outlet is formed in the side wall, facing the broach, of the cooling ring pipe along the circumferential direction of the side wall, and a supply device used for supplying cooling liquid to the cooling ring pipe is communicated with the side wall of the cooling ring pipe.

Through adopting above-mentioned technical scheme, in the course of working, supply with the coolant liquid to the cooling ring pipe through supply apparatus, the coolant liquid gets into and spouts from the liquid outlet after the cooling ring pipe is inside to spray at the broach surface, thereby cool off the broach surface, prolong the life of broach.

Optionally, the supply device includes an upper open liquid storage tank and a liquid pump disposed in the liquid storage tank, the liquid storage tank is fixedly disposed below the workbench, a plurality of liquid return holes communicated with the liquid storage tank are formed in the side wall of the workbench in a penetrating manner, and the liquid pump is communicated with the cooling ring pipe through a pipeline.

Through adopting above-mentioned technical scheme, can final drippage on the workstation from liquid outlet spun coolant liquid to in returning the liquid hole to get into the liquid reserve tank, rethread drawing liquid pump is pumped to the cooling ring pipe again, in order to realize the cyclic utilization of coolant liquid.

Optionally, a filter screen is arranged in the liquid storage tank, and the aperture of the mesh of the filter screen is smaller than the inner diameter of the liquid return hole.

Through adopting above-mentioned technical scheme, owing to can produce the piece at the flower in-process that draws, in the piece easily gets into the liquid reserve tank along with the coolant liquid on the workstation, filter the coolant liquid through the filter screen this moment, reduce the condition that the piece blockked up the drawing liquid pump.

Optionally, a liquid discharge port is formed in the upper surface of the workbench in a penetrating mode, the upper surface of the workbench is connected with an outer scraper in a rotating mode, and a third driving piece used for driving the outer scraper to scrape the chips and the cooling liquid on the upper surface of the workbench into the liquid discharge port is further arranged inside the workbench.

Through adopting above-mentioned technical scheme, scrape the piece and the coolant liquid of workstation upper surface into the flowing back in through the outer scraper blade of third driving piece drive to improve coolant liquid speed of discharging down.

Optionally, an inner scraper is arranged on the upper surface of the filter screen, and a fourth driving part for driving the inner scraper to move circumferentially with the broach as a center is arranged in the liquid storage tank.

Through adopting above-mentioned technical scheme, the setting of interior scraper blade can reduce impurity and pile up at filter screen same position for a long time to influence the condition of the speed of arranging down of coolant liquid, when scraping the filter screen upper surface through the fourth driving piece, can reduce the jam of filter screen on the one hand, the scraper blade drives impurity and uses the broach as center circumferential direction in the other hand, thereby makes the coolant liquid from not having the filter screen department of impurity down to arrange.

Optionally, the third driving element includes a driving swivel, a rotating rod, a driving gear fixedly sleeved outside the rotating rod, and a driving motor for driving the rotating rod to rotate circumferentially; the outer side wall of the driving rotary ring is meshed with the outer side wall of the driving gear, a driving cavity into which a driving motor, a rotary rod and the driving gear are inserted is formed in the workbench, the lower end of the driving rotary ring is located in the driving cavity, and the upper end of the driving rotary ring penetrates through the workbench and is fixedly connected to the outer scraper;

the fourth driving part comprises a linkage rotating ring and a linkage gear, the linkage rotating ring is arranged in the liquid storage box, the outer side wall of the linkage rotating ring is fixedly connected to the end wall of the inner scraper, the side wall of the linkage rotating ring, which deviates from the position of the inner scraper, is meshed with the linkage gear, the linkage gear penetrates through the liquid storage box and is meshed with the linkage rotating ring, and the lower end of the rotating rod penetrates through the workbench and is fixedly inserted into the inner wall of the linkage gear.

By adopting the technical scheme, when the driving motor is started, the rotating rod rotates, the driving gear and the linkage gear rotate along with the rotating rod in the circumferential direction, and then the driving rotating ring meshed with the driving gear drives the outer scraper to rotate so as to scrape impurities on the workbench into the liquid discharge port through the outer scraper; and the linkage rotating ring meshed with the linkage gear drives the inner scraper to rotate, so that the filter screen is scraped by the inner scraper.

Optionally, ice cubes are inserted into the bottom of the liquid storage tank.

Through adopting above-mentioned technical scheme, the setting of ice-cube can be cooled down to the coolant liquid to optimize the cooling effect of coolant liquid to the broach.

Optionally, a heat insulation plate and a heat insulation plate are arranged inside the liquid storage tank close to the ice blocks.

By adopting the technical scheme, the arrangement of the heat insulation plate and the heat insulation plate can prolong and reduce the ablation speed and prolong the cooling time of the ice block on the cooling liquid.

Optionally, the side wall of the cooling ring pipe is provided with a brush along the circumferential direction, and the side wall of the brush far away from the cooling ring pipe is attached to the side wall of the broach.

Through adopting above-mentioned technical scheme, when the cooling ring pipe removed along with the workstation, scrape the broach surface through the brush, reduce the broach quality that the produced piece of drawing in-process is long-pending to be stayed at the broach surface and influence follow-up work piece.

Optionally, the fixed subassembly of work piece sets up in the fixed frame of workstation upper surface including the symmetry, each fixed frame all includes deckle board, lower deckle board and is located the regulating plate between deckle board and the lower deckle board, regulating plate upper end fixed connection is in the upper deckle board, the regulating hole that supplies the regulating plate to insert to establish is seted up to the lower deckle board upper surface, regulating plate lateral wall threaded connection has fixing bolt, the lower deckle board lateral wall is seted up a plurality of and is supplied fixing bolt to insert the fixed orifices of establishing.

Through adopting above-mentioned technical scheme, insert the work piece between two fixed frames, according to the fixed frame height of the thickness regulation of work piece, fix the height of fixed frame through running through one of them fixed orifices and threaded connection in the regulating plate lateral wall with fixing bolt.

In summary, the present application includes at least one of the following beneficial technical effects:

1. in the machining process, cooling liquid is supplied to the cooling ring pipe through the supply device, and the cooling liquid is sprayed out from the liquid outlet after entering the cooling ring pipe and is sprayed on the outer surface of the broach, so that the outer surface of the broach is cooled, and the service life of the broach is prolonged;

2. the arrangement of the ice blocks can cool the cooling liquid so as to optimize the cooling effect of the cooling liquid on the broach; the arrangement of the heat insulation plate and the heat insulation plate can prolong and reduce the melting speed and prolong the cooling time of the ice block to the cooling liquid.

Drawings

Fig. 1 is a schematic structural view of a lathe for spline housing broaching in one embodiment.

FIG. 2 is a sectional view of a lathe for spline housing broaching in the embodiment.

Fig. 3 is an enlarged schematic view of the structure of part a in fig. 2.

Fig. 4 is an enlarged schematic view of the structure of part B shown in fig. 2.

Fig. 5 is an enlarged schematic view of the structure of part C shown in fig. 2.

Description of reference numerals: 1. a frame; 11. broaching; 111. a light bar section; 112. a flower-drawing part; 12. a second driving member; 121. an upper cylinder; 122. an upper manipulator; 123. a lower manipulator; 124. a lower cylinder; 13. a work table; 131. a liquid return hole; 132. a liquid discharge port; 133. a drive chamber; 134. a through hole; 14. a first driving member; 141. a screw rod; 142. rotating the motor; 143. a guide bar; 15. a workpiece fixing assembly; 151. a fixing frame; 1511. an upper frame plate; 1512. a lower frame plate; 1513. an adjusting plate; 1514. an adjustment hole; 1515. fixing the bolt; 1516. a fixing hole; 16. a supply device; 161. a liquid storage tank; 1611. a cavity; 1612. an installation port; 1613. mounting a plate; 1614. ice cubes; 1615. a thermal insulation board; 1616. a heat insulation plate; 1617. a ring plate; 1618. a filter screen; 1619. an inner scraper; 162. a liquid pump; 163. a cooling loop; 1631. a liquid outlet; 1632. a brush; 17. an outer squeegee; 18. a third driving member; 181. a drive motor; 182. driving the swivel; 183. a rotating rod; 184. a drive gear; 19. a fourth drive; 191. linkage swivel; 192. a linkage gear; 1921. a connecting plate; 2. and (5) a workpiece.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a lathe for spline housing broaching. Referring to fig. 1 and 2, the lathe for spline housing broaching comprises a frame 1, wherein a broaching tool 11 is arranged in the frame 1, the length direction of the broaching tool 11 is arranged along the height direction of the frame 1, and the broaching tool comprises a broaching part 112 at the middle part and polish rod parts 111 at two ends; the frame 1 is also provided with a second driving element 12 for driving the broach 11 to reciprocate along the height direction of the frame 1.

Referring to fig. 1 and 2, the second driving member 12 includes an upper robot 122 disposed at the top of the rack 1, an upper cylinder 121 disposed at the top of the rack 1, a lower robot 123 disposed at the bottom of the rack 1, and a lower cylinder 124 disposed at the bottom of the rack 1; the upper manipulator 122 and the lower manipulator 123 are electric jaws; the driving end of the upper oil cylinder 121 is fixedly welded to the upper end of the upper manipulator 122, the driving end of the lower oil cylinder 124 is welded to the lower end of the lower manipulator 123, the upper manipulator 122 and the lower manipulator 123 clamp and fix the broach 11, the upper oil cylinder 121 moves the broach 11 downwards, and the lower oil cylinder 124 moves the broach 11 upwards.

Referring to fig. 2, a workbench 13 and a first driving member 14 for driving the workbench 13 to slide back and forth along the height direction of the rack 1 are further arranged inside the rack 1, the first driving member 14 includes a screw rod 141 rotatably connected in the rack 1, a guide rod 143 fixedly connected in the rack 1, and a rotating motor 142 for driving the screw rod 141 to rotate, the rotating motor 142 is fixed at the top of the rack 1, the screw rod 141 is inserted into the side wall of the workbench 13 through threads, the guide rod 143 penetrates through the workbench 13, and the screw rod 141 and the guide rod 143 are both arranged along the height direction of the rack 1.

Referring to fig. 2 and 3, a through hole 134 for the broach 11 to penetrate is formed in the middle of the workbench 13, a workpiece 2 fixing component 15 is arranged on the upper surface of the workbench 13 close to the through hole 134, the workpiece 2 fixing component 15 includes fixing frames 151 symmetrically welded on the upper surface of the workbench 13, each fixing frame 151 includes an upper frame plate 1511, a lower frame plate 1512, and an adjusting plate 1513 located between the upper frame plate 1511 and the lower frame plate 1512.

Referring to fig. 2 and 3, the lower end of the upper frame plate 1511 is fixedly welded to the adjusting plate 1513, the upper surface of the upper frame plate 1511 is provided with an adjusting hole 1514 for inserting the lower end of the adjusting plate 1513, the side wall of the adjusting plate 1513 is in threaded connection with a fixing bolt 1515, the side wall of the lower frame plate 1512 is provided with a plurality of fixing holes 1516 for the fixing bolts 1515 to penetrate through along the height direction, and the fixing holes 1516 are communicated with the adjusting hole 1514; the workbench 13 is further provided with a workpiece 2, the workpiece 2 is a spline sleeve, the workpiece 2 is inserted between the two fixing frames 151, the upper surface of the workpiece 2 is attached to the upper frame plate 1511, and the lower surface of the workpiece 2 is attached to the upper surface of the lower frame plate 1512.

Referring to fig. 1 and 4, the cross section of the workbench 13 is circular, the upper surface of the workbench 13 is provided with a plurality of liquid return holes 131 in a penetrating manner, the upper surface of the workbench 13 is also provided with a liquid discharge port 132 in a penetrating manner, and the liquid discharge port 132 is arranged along the radial direction of the workbench 13; the upper surface of the workbench 13 is further provided with an outer scraper 17, the lower surface of the outer scraper 17 is attached to the upper surface of the workbench 13, a driving cavity 133 is formed inside the workbench 13, a third driving part 18 is arranged inside the driving cavity 133, and the third driving part 18 comprises a driving rotating ring 182, a rotating rod 183, a driving gear 184 fixedly connected to the outer side wall of the rotating rod 183 and a driving motor 181 used for driving the rotating rod 183 to rotate in the circumferential direction.

Referring to fig. 1 and 4, the rotating rod 183, the driving gear 184 and the driving motor 181 are located in the driving chamber 133, the driving motor 181 is fixedly welded to the top wall inside the driving chamber 133, the driving end of the driving motor 181 is welded to the upper end of the rotating rod 183, the lower end of the driving swivel 182 is inserted into the driving chamber 133, the side wall of the driving swivel 182 is meshed with the side wall of the driving gear 184, the upper end of the driving swivel 182 penetrates through the driving chamber 133 and is fixedly welded to the end wall of the outer scraper 17, the driving swivel 182 is located at the periphery of the fixed component 15 of the workpiece 2, when the driving motor 181 is started, the rotating rod 183 drives the driving gear 184 to rotate circumferentially, the driving swivel 182 meshed with the driving gear 184 rotates circumferentially, and then the outer scraper 17 is driven to rotate.

Referring to fig. 2, a supply device 16 for supplying cooling liquid is arranged below the workbench 13, the supply device 16 comprises a liquid storage tank 161 with an upper opening and a liquid pump 162 arranged in the liquid storage tank 161, the liquid storage tank 161 contains cooling liquid, and the upper end of the liquid storage tank 161 can be detachably connected with the workbench 13 through bolts, so that the cooling liquid can be conveniently replaced; the liquid return hole 131 and the liquid discharge port 132 are both communicated with the liquid storage tank 161.

Referring to fig. 2 and 4, the cross section of the liquid storage tank 161 is annular, a filter screen 1618 is arranged inside the liquid storage tank 161, the mesh of the filter screen 1618 is smaller than the aperture of the liquid return hole 131, an inner scraper 1619 is arranged on the upper surface of the filter screen 1618, a fourth driving part 19 is further arranged in the liquid storage tank 161, the fourth driving part 19 comprises a linkage rotating ring 191 and a linkage gear 192, a ring plate 1617 for placing the linkage rotating ring 191 is arranged on the inner wall of the liquid storage tank 161 along the circumferential direction, the side wall of the linkage rotating ring 191 facing the inner scraper 1619 is welded on the end wall of the inner scraper 1619, the side wall of the linkage rotating ring 191 departing from the inner scraper 1619 is meshed with the linkage gear 192, and the side wall of the linkage gear 192 penetrates through the liquid storage tank 161 and is meshed with the linkage rotating ring 191.

Referring to fig. 2 and 4, the lower end of the rotary rod 183 penetrates through the workbench 13 and is inserted into the linkage gear 192, a connecting plate 1921 is arranged on the outer side wall of the rotary rod 183 close to the linkage gear 192, the upper end of the connecting plate 1921 is fixedly connected to the outer side wall of the rotary rod 183 through a bolt, and the lower end of the connecting plate 1921 is fixedly connected to the side wall of the linkage gear 192 through a bolt; when the rotating rod 183 rotates, the link gear 192 is driven to rotate circumferentially, and the link ring 191 engaged with the link gear 192 drives the outer blade 17 to rotate.

Referring to fig. 2 and 5, a cavity 1611 is formed at the bottom of the liquid storage tank 161, an installation opening 1612 communicated with the cavity 1611 is formed in the bottom wall of the liquid storage tank 161, an installation plate 1613 is arranged at a position, close to the installation opening 1612, of the liquid storage tank 161, the installation plate 1613 is fixedly connected with the side wall of the liquid storage tank 161 through bolts, the installation plate 1613 covers the installation opening 1612, and ice blocks 1614 are inserted into the cavity 1611 to cool the cooling liquid in the liquid storage tank 161; an insulation board 1615 and an insulation board 1616 are inserted into the liquid storage tank 161 near the cavity 1611, the insulation board 1615 may be an extruded board, the insulation board 1616 may be a foam board, so as to reduce the melting speed of the ice block 1614,

Referring to fig. 2 and 3, the liquid pump 162 is a water pump, a liquid outlet 1631 of the liquid pump 162 penetrates through the liquid storage tank 161 and is communicated with a cooling collar 163 through a pipeline, the cooling collar 163 is located at the periphery of the workpiece 2 and the broach 11, and a plurality of liquid outlets 1631 are arranged on the side wall of the cooling collar 163 facing the broach 11 along the circumferential direction thereof, so that the coolant in the liquid storage tank 161 is pumped by the liquid pump 162 to cool the broach 11; a brush 1632 is fixed to the side wall of the cooling collar 163 along the circumferential direction, and one end of the brush 1632 away from the cooling collar 163 is attached to the side wall of the broach 11 to remove the debris from the side wall of the broach 11.

The implementation principle of the lathe for spline housing broaching in the embodiment of the application is as follows: firstly, a workpiece 2 is inserted between two fixed frames 151, and an adjusting plate 1513 slides along the height direction of an adjusting hole 1514, so that an upper frame plate 1511 is attached to the upper surface of the workpiece 2, and the moving position of the adjusting plate 1513 is fixed through a fixing bolt 1515; then the upper manipulator 122 clamps the broach 11, the polished rod part 111 at the lower end of the broach 11 penetrates through the workbench 13 and the liquid storage box 161, the lower manipulator 123 clamps the polished rod part 111 at the lower end of the broach 11, then the rotary motor 142 and the liquid pump 162 are started, the screw rod 141 is driven to rotate through the rotary motor 142, so that the workbench 13 and the liquid storage box 161 move upwards, the inner wall of the workpiece 2 is in contact with the broaching part 112 of the broach 11 in the moving upwards process, the broaching of the workpiece 2 is realized, and the liquid pump 162 sprays cooling liquid from the liquid outlet 1631, so that the cooling of the broach 11 is realized;

the cooling liquid drops on the workbench 13, the chips generated by the garland splash on the workbench 13, at this time, the driving motor 181 is started to drive the outer scraper 17 and the inner scraper 1619 to rotate, the cooling liquid and the chips on the upper surface of the workbench 13 are scraped into the liquid storage tank 161 through the liquid discharge port 132 by the outer scraper 17, the cooling liquid is filtered by the filter screen 1618, impurities in the filter screen 1618 are driven to move by the inner scraper 1619, the blockage of the filter screen 1618 is reduced, and the recycling of the cooling liquid is realized;

after the broaching is finished, the driving motor 181 drives the workbench 13 and the liquid storage tank 161 to move downwards to the bottom of the rack 1 again, the lower oil cylinder 124 drives the broach 11 to move upwards, the upper manipulator 122 clamps the broach 11, the lower manipulator 123 releases the clamping of the broach 11 at the moment, the lower oil cylinder 124 resets, the smooth rod part 111 at the lower end of the broach 11 is positioned above the workpiece 2 at the moment, the workpiece 2 can be replaced, the upper oil cylinder 121 drives the broach 11 to move downwards to penetrate through the workpiece 2 and the workbench 13, and the lower manipulator 123 clamps the broach 11 for subsequent broaching.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A lathe for spline sleeve broaching comprises a rack (1), a workbench (13) and a broach (11), wherein the workbench (13) and the broach (11) are positioned on the rack (1), a first driving piece (14) for driving the workbench (13) to reciprocate along the height direction of the rack (1) is arranged on the rack (1), a second driving piece (12) for driving the broach (11) to reciprocate along the height direction of the rack (1) is also arranged on the rack (1), and a workpiece (2) and a workpiece fixing component (15) are arranged on the workbench (13); the method is characterized in that: the workbench (13) is also provided with a cooling ring pipe (163), the cooling ring pipe (163) is positioned at the periphery of the workpiece (2) and the broach (11), a liquid outlet (1631) is formed in the side wall of the cooling ring pipe (163) facing the broach (11) along the circumferential direction of the broach, and the side wall of the cooling ring pipe (163) is communicated with a supply device (16) for supplying cooling liquid to the cooling ring pipe (163); the supply device (16) comprises a liquid storage tank (161) with an opening at the upper part and a liquid pumping pump (162) arranged in the liquid storage tank (161), the liquid storage tank (161) is fixedly arranged below the workbench (13), a plurality of liquid returning holes (131) communicated with the liquid storage tank (161) penetrate through the side wall of the workbench (13), and the liquid pumping pump (162) is communicated with the cooling ring pipe (163) through a pipeline; a filter screen (1618) is arranged in the liquid storage tank (161), and the aperture of the mesh of the filter screen (1618) is smaller than the inner diameter of the liquid return hole (131); a liquid discharge port (132) is formed in the upper surface of the workbench (13) in a penetrating mode, an outer scraping plate (17) is rotatably connected to the upper surface of the workbench (13), and a third driving piece (18) used for driving the outer scraping plate (17) to scrape chips and cooling liquid on the upper surface of the workbench (13) into the liquid discharge port (132) is further arranged inside the workbench (13); an inner scraper (1619) is arranged on the upper surface of the filter screen (1618), and a fourth driving part (19) for driving the inner scraper (1619) to move circumferentially around a broach (11) is arranged in the liquid storage tank (161);

the third driving part (18) comprises a driving rotating ring (182), a rotating rod (183), a driving gear (184) fixedly sleeved outside the rotating rod (183), and a driving motor (181) for driving the rotating rod (183) to rotate circumferentially; the outer wall of the driving rotating ring (182) is meshed with the outer wall of the driving gear (184), a driving cavity (133) for inserting the driving motor (181), the rotating rod (183) and the driving gear (184) is arranged in the workbench (13), the lower end of the driving rotating ring (182) is located in the driving cavity (133), and the upper end of the driving rotating ring (182) penetrates through the workbench (13) and is fixedly connected to the outer scraper (17); fourth drive piece (19) are including linkage change (191) and linkage gear (192), linkage change (191) set up in liquid reserve tank (161), just linkage change (191) lateral wall fixed connection is in interior scraper blade (1619) end wall, linkage change (191) deviate from the lateral wall and the meshing of linkage gear (192) of interior scraper blade (1619) department mutually, linkage gear (192) run through liquid reserve tank (161) and mesh mutually with linkage change (191), bull stick (183) lower extreme runs through workstation (13) and fixed the inserting locates linkage gear (192) inner wall.

2. A lathe for spline housing broaching as defined in claim 1, wherein: an ice block (1614) is inserted into the bottom of the liquid storage tank (161).

3. A lathe for spline housing broaching as defined in claim 2, wherein: an insulation board (1615) and an insulation board (1616) are arranged inside the position, close to the ice blocks (1614), of the liquid storage tank (161).

4. A lathe for spline housing broaching as defined in claim 1, wherein: the side wall of the cooling ring pipe (163) is provided with a brush (1632) along the circumferential direction, and the side wall of the brush (1632) far away from the cooling ring pipe (163) is attached to the side wall of the broach (11).

5. A lathe for spline housing broaching as defined in claim 1, wherein: the fixed subassembly of work piece (15) sets up fixed frame (151) in workstation (13) upper surface including the symmetry, each fixed frame (151) all includes deckle board (1511), lower deckle board (1512) and be located regulating plate (1513) between deckle board (1511) and lower deckle board (1512), regulating plate (1513) upper end fixed connection is in last deckle board (1511), regulation hole (1514) that supply regulating plate (1513) to insert and establish are seted up to lower deckle board (1512) upper surface, regulating plate (1513) lateral wall threaded connection has fixing bolt (1515), a plurality of supplies fixing bolt (1515) to insert fixed orifices (1516) of establishing are seted up to lower deckle board (1512) lateral wall.