CN209902268U - A can quick tool changing type horizontal lathe for forged piece processing - Google Patents

Abstract

The utility model belongs to the technical field of the horizontal lathe and specifically relates to a can quick tool changing type horizontal lathe for forged piece processing is related to, including the mount pad, be equipped with the guide rail and the lead screw that are parallel to each other on the mount pad, the cooperation is equipped with the nut seat on the lead screw, is fixed with the sliding seat on the nut seat, sliding seat and guide rail sliding fit, the one end of mount pad is fixed with the bearing frame, and in the bearing frame was worn to locate by the lead screw, the one end that the lead screw stretches out the bearing frame was fixed with twist grip. The utility model aims at providing a but, quick tool changing type horizontal lathe for forged piece processing, it has the less quick tool changing structure of the institutional advancement degree to former horizontal lathe. The set screw does not need to be screwed down for many times during tool changing, the preparation auxiliary time is shortened, the production efficiency is improved, and the labor intensity of workers is reduced; the original structure of the horizontal lathe is slightly changed, and the applicable lathe is wide in type and has good application prospect.

Description

A can quick tool changing type horizontal lathe for forged piece processing

Technical Field

The utility model belongs to the technical field of horizontal lathe and specifically relates to a but horizontal lathe of quick tool changing type for forged piece processing is related to.

Background

In the field of current machining, a horizontal lathe tool holder generally adopts the traditional form that a turning tool is directly pushed by a screw, when the tool is changed each time, firstly, a set screw needs to be manually loosened to dismount the tool, then another tool is mounted, the screw is locked again, in the whole tool changing process, the clamping and loosening time of the tool is long, the clamping and loosening time of the tool is the preparation auxiliary time for machining of the machine tool, the preparation auxiliary time is long, so that the machining efficiency of the machine tool is low, the screw is frequently screwed and loosened, and the labor intensity of workers is increased.

The invention patent with the publication number of CN101474682A discloses a tiger head cutter holder broach structure of a horizontal lathe, which only needs to control a motor to rotate when changing cutters so as to drive a cutter locking pull rod to rotate, thereby loosening or tightening a tiger head cutter holder fixed with a cutter. This structure becomes the tool holder of change tiger head with current tool changing work, has reduced the artifical time of loosening or screwing up holding screw, makes whole tool changing time shorten greatly to owing to adopt the motor, make tool changing work realize semi-automatization, reduced workman's intensity of labour. However, the structure of the tiger head tool holder broach structure of the horizontal lathe is greatly improved on the structure of the original horizontal lathe, so the improvement cost is higher.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a but, quick tool changing type horizontal lathe for forged piece processing, it has the less quick tool changing structure of the institutional advancement degree to former horizontal lathe.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: a fast tool changing type horizontal lathe for machining forged parts comprises a mounting seat, wherein a guide rail and a lead screw which are parallel to each other are arranged on the mounting seat, a nut seat is arranged on the lead screw in a matched mode, a sliding seat is fixed on the nut seat and is in sliding fit with the guide rail, a bearing seat is fixed at one end of the mounting seat, the lead screw penetrates through the bearing seat, a rotating handle is fixed at one end, extending out of the bearing seat, of the lead screw, a shell is fixed on the sliding seat, a worm wheel and a worm which are meshed with each other are arranged in the shell, a rotating shaft is coaxially fixed on the worm wheel, and one end of the; a gear pump is fixed at the top of the shell, a first gear and a second gear which are meshed with each other are arranged in the gear pump, the rotating shaft penetrates through the gear pump and is coaxially fixed with the first gear, and a liquid inlet and a liquid outlet are formed in the gear pump; the top of the gear pump is provided with a tool rest, the tool rest comprises a bottom plate and a top plate, the bottom plate is fixed at the top of the gear pump, a set screw penetrates through the top plate, a hydraulic cylinder is arranged between the bottom plate and the top plate, a piston is arranged in the hydraulic cylinder in a matched manner, and the piston is fixedly connected with the top plate through a piston rod; the knife rest top is fixed with the oil tank, the oil tank is through advancing the inlet switch-on of oil pipe and gear pump, the switch-on has an oil pipe on the liquid outlet of gear pump, be equipped with the switching-over valve on the oil pipe, the switch-on has first pipeline and second pipeline on the switching-over valve, top switch-on in first pipeline and the pneumatic cylinder, bottom switch-on in second pipeline and the pneumatic cylinder, first pipeline is connected through first time oil pipe with the oil tank, be equipped with first ooff valve on the first time oil pipe, the second pipeline passes through the second with the oil tank and returns oil union coupling, the second returns to be equipped with the second ooff valve on the.

Through adopting above-mentioned technical scheme, arrange the cutter in between roof and the bottom plate during the tool changing, then it is rotatory with the drill drive worm, the worm drives the worm wheel and the pivot is rotatory, pivot drive gear pump sending fluid, in fluid discharged to the oil pipe from the liquid outlet of gear pump, when the effect of the fluid process commutator in the oil pipe gets into the pneumatic cylinder from first pipeline, the piston was pushed down, also downstream with piston fixed connection's roof, holding screw on the roof can compress tightly the cutter.

When the cutter needs to be loosened, the oil way of the reversing valve is switched to enable the second pipeline to be filled with oil, then the worm is driven to rotate by the hand drill, oil pumped into the hydraulic cylinder from the second pipeline enters the hydraulic cylinder, the piston moves upwards, the top plate fixedly connected with the piston also moves upwards, and the cutter is loosened by the set screw on the top plate.

The structure of the original tool rest, the installation seat and the sliding seat of the horizontal lathe is only changed, so that the structural improvement degree of the original horizontal lathe is low; and the set screw does not need to be screwed down for many times during tool changing, the preparation auxiliary time is shortened, and the production efficiency is improved.

Preferably, a spherical cavity is arranged in the reversing valve, a first through hole and a second through hole are formed in the inner wall of the spherical cavity, a first pipeline is communicated with the first through hole, a second pipeline is communicated with the second through hole, a valve core is arranged in the spherical cavity, a valve rod and a baffle are fixed on the valve core, the valve rod penetrates through the reversing valve to be externally connected with a handle, and the baffle can rotate to close the first through hole or the second through hole.

Through adopting above-mentioned technical scheme, rotatory handle can make first pipeline/second pipeline logical oil.

Preferably, the bottom in the casing is fixed with circular base, and the coaxial cylinder guide shaft that is fixed with in circular base top, pivot cover on the cylinder guide shaft, and pivot and cylinder guide shaft are coaxial, pivot and cylinder guide shaft normal running fit.

Through adopting above-mentioned technical scheme, the cylinder guide shaft plays the spacing effect of countershaft, prevents that the pivot from along radial displacement.

Preferably, an annular flange is formed at the bottom of the rotating shaft, the lower surface of the annular flange is fixedly connected with a worm wheel, the worm wheel is sleeved on the circular base, an annular groove is formed by the worm wheel and the cylindrical guide shaft in a surrounding mode, an annular convex block is formed on the lower surface of the annular flange and extends into the annular groove, a planar thrust needle roller bearing is arranged between the lower surface of the annular convex block and the upper surface of the circular base, and a spherical thrust needle roller bearing is arranged between the inner side cambered surface of the annular convex block and the cylindrical guide shaft.

By adopting the technical scheme, the rotating shaft can keep good coaxiality with the cylindrical guide shaft during rotation and bear smaller frictional resistance.

Preferably, a third through hole is formed in the bottom plate, one end of the third through hole is communicated with any side surface of the non-upper surface of the bottom plate, the other end of the third through hole is communicated with the bottom in the hydraulic cylinder, and the second pipeline is communicated with the third through hole; and a fourth through hole is formed in the top plate, one end of the fourth through hole is communicated with any side surface of the non-lower surface of the top plate, the other end of the fourth through hole is communicated with the top in the hydraulic cylinder, and the first pipeline is communicated with the fourth through hole.

Through adopting above-mentioned technical scheme, adopt the fluid through-hole of hiding in bottom plate and roof, can prevent that second pipeline and first pipeline from interfering with the cutter.

Preferably, the end of the worm extending out of the shell is provided with a countersunk hexagon socket.

By adopting the technical scheme, a hand drill or a motor can be conveniently coupled with the worm, so that the worm is driven to rotate.

Preferably, the upper portion of casing and gear pump inlay in the sliding seat fixedly, are equipped with the breach on the mount pad, and the breach is located to the lower part of casing.

By adopting the technical scheme, the position of the original tool rest can be kept unchanged, and the whole tool changing structure is compact.

Preferably, the outer wall of the shell is provided with a jack, and the screw rod is inserted into the jack.

By adopting the technical scheme, the length of the longer lead screw can be reserved, so that the stroke of the cutter is prolonged.

To sum up, the utility model discloses a beneficial technological effect does:

1. the set screw does not need to be screwed down for many times during tool changing, the preparation auxiliary time is shortened, the production efficiency is improved, and the labor intensity of workers is reduced;

2. the original structure of the horizontal lathe is slightly changed, and the applicable lathe is wide in type and has good application prospect.

Drawings

FIG. 1 is a schematic view showing the overall structure of a horizontal lathe of a quick tool change type for machining forged parts;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic view of the quick tool change configuration of FIG. 2;

FIG. 4 is a schematic view of the sliding seat shown in FIG. 3 after being hidden;

FIG. 5 is a schematic view of the arrangement of FIG. 4 with the housing and tool holder hidden;

FIG. 6 is a schematic view of the connection of the internal structure of the housing to the internal structure of the gear pump;

FIG. 7 is a half-sectional view of the housing and gear pump interface;

FIG. 8 is a front view of the tool holder;

FIG. 9 is a sectional view taken along line A-A of FIG. 8;

FIG. 10 is a half sectional view of the reversing valve.

In the figure, 1, a mounting seat; 1a, a gap; 2. a guide rail; 3. a lead screw; 4. a nut seat; 5. a sliding seat; 6. a bearing seat; 7. rotating the handle; 8. a housing; 8a, a jack; 9. a worm gear; 10. a worm; 10a, a countersunk hexagon socket; 11. a rotating shaft; 11a, an annular flange; 11b, an annular bump; 12. a gear pump; 12a, a liquid inlet; 12b, a liquid outlet; 13. a first gear; 14. a second gear; 15. a tool holder; 151. a base plate; 151a, a third through hole; 152. a top plate; 152a, a fourth via; 16. an oil tank; 17. an oil inlet pipe; 18. an oil outlet pipe; 19. a diverter valve; 19a, a spherical cavity; 19b, a first through hole; 19c, a second through hole; 191. a valve core; 192. a valve stem; 193. a baffle plate; 194. a handle; 20. a first conduit; 21. a second conduit; 22. a circular base; 23. a cylindrical guide shaft; 24. an annular groove; 25. a planar thrust needle bearing; 26. a spherical thrust needle bearing; 27. tightening the screw; 28. a hydraulic cylinder; 29. a piston; 30. a piston rod; 31. a first oil return pipe; 32. a second oil return pipe; 33. a first on-off valve; 34. and a second on-off valve.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): fig. 1 is the utility model discloses a can quick tool changing type horizontal lathe for forging and pressing part processing, as shown in fig. 4, including mount pad 1, be equipped with guide rail 2 and the lead screw 3 that is parallel to each other on the mount pad 1, the cooperation is equipped with nut seat 4 on the lead screw 3, is fixed with sliding seat 5 on the nut seat 4 (see fig. 3), sliding seat 5 and 2 sliding fit of guide rail, the one end of mount pad 1 is fixed with bearing frame 6, in the bearing frame 6 was worn to locate by lead screw 3, the one end that lead screw 3 stretches out bearing frame 6 was fixed with twist grip 7.

Referring to fig. 3 and 4, the quick tool changing structure of the horizontal lathe comprises a housing 8, a gear pump 12 is fixed on the top of the housing 8, and the upper part of the housing 8 and the gear pump 12 are fixedly embedded in a sliding seat 5.

Referring to fig. 4 and 5, a notch 1a is formed at an end of the mounting base 1 away from the rotating handle 7, and a lower portion of the housing 8 is disposed in the notch 1 a. The screw rod 3 is rotated by rotating the rotating handle 7, the nut seat 4 can move along the length direction of the screw rod 3, and the whole body which is fixed by the nut seat 4, the sliding seat 5 and the shell 8 (see figure 3) can move along the length direction of the horizontal lathe. The outer wall of the shell 8 is provided with a jack 8a, the lead screw 3 is inserted into the jack 8a, the length of the lead screw 3 can be kept longer, and the stroke of the nut seat 4 is prolonged.

As shown in fig. 6, a worm 10 and a worm wheel 9 are arranged in the housing 8, which are engaged with each other, one end of the worm 10 extends out of the housing 8, and the end of the worm 10 extending out of the housing 8 is provided with a countersunk hexagon socket 10a, which can facilitate the coupling of the rotation shaft of the hand drill or the motor with the worm 10, thereby driving the worm 10 to rotate.

As shown in fig. 7, a circular base 22 is fixed at the bottom inside the housing 8, a cylindrical guide shaft 23 is coaxially fixed at the top of the circular base 22, a rotating shaft 11 is coaxially fixed on the worm wheel 9, an annular flange 11a is formed at the bottom of the rotating shaft 11, the lower surface of the annular flange 11a is fixedly connected with the worm wheel 9, the rotating shaft 11 is sleeved on the cylindrical guide shaft 23, and the rotating shaft 11 is coaxial with the cylindrical guide shaft 23. The worm wheel 9 is sleeved on the circular base 22, the worm wheel 9 and the cylindrical guide shaft 23 enclose an annular groove 24, an annular convex block 11b is formed on the lower surface of the annular flange 11a, the annular convex block 11b extends into the annular groove 24, a plane thrust needle roller bearing 25 is arranged between the lower surface of the annular convex block 11b and the upper surface of the circular base 22, and a spherical thrust needle roller bearing 26 is arranged between the inner side cambered surface of the annular convex block 11b and the cylindrical guide shaft 23.

As shown in fig. 7, the rotating shaft 11 is rotatably engaged with the cylindrical guide shaft 23, the cylindrical guide shaft 23 serves to limit the rotating shaft 11, prevent the rotating shaft 11 from moving in the radial direction, keep good coaxiality with the cylindrical guide shaft 23 when the rotating shaft 11 rotates, and receive a small frictional resistance when the rotating shaft 11 rotates by engaging with the planar thrust needle bearing 25 and the spherical thrust needle bearing 26.

As shown in fig. 6, a first gear 13 and a second gear 14 which are engaged with each other are arranged in the gear pump 12, the rotating shaft 11 penetrates through the gear pump 12 and is coaxially fixed with the first gear 13, the rotating shaft 11 is used for driving the first gear 13 to rotate, the first gear 13 drives the second gear 14 to rotate, a liquid inlet 12a and a liquid outlet 12b are arranged on the gear pump 12, oil enters the gear pump 12 from the liquid inlet 12a, and the oil is pumped at the engagement position of the first gear 13 and the second gear 14 and is discharged from the liquid outlet 12 b.

Referring to fig. 4 and 9, the gear pump 12 is provided with a tool holder 15 at the top, the tool holder 15 is composed of a bottom plate 151, a top plate 152, and a cylinder connecting the bottom plate 151 and the top plate 152, the bottom plate 151 is fixed at the top of the gear pump 12, the top plate 152 is provided with a set screw 27, and the cylinder connecting the bottom plate 151 and the top plate 152 is provided with a hydraulic cylinder 28. A piston 29 is arranged in the hydraulic cylinder 28 in a matching way, the piston 29 is fixedly connected with the top plate 152 through a piston rod 30, and a sealing ring is fixed on the top part in the hydraulic cylinder 28 around the piston rod 30.

As shown in fig. 9, an oil tank 16 is fixed to the top of the tool holder 15, the oil tank 16 is connected to a liquid inlet 12a (see fig. 6) of the gear pump 12 through an oil inlet pipe 17, and a liquid outlet pipe 18 (see fig. 4) is connected to a liquid outlet 12b of the gear pump 12.

As shown in fig. 4, a change valve 19 is installed on the delivery line 18.

As shown in fig. 10, a spherical cavity 19a is provided in the change valve 19, a first through hole 19b and a second through hole 19c are provided on the inner wall of the spherical cavity 19a, a first pipe 20 is connected to the first through hole 19b, a second pipe 21 is connected to the second through hole 19c, a valve core 191 is provided in the spherical cavity 19a, a valve rod 192 and a baffle 193 are fixed on the valve core 191, a handle 194 (see fig. 4) is fixed on one end of the valve rod 192 penetrating to the outside of the change valve 19, and the handle 194 is rotated to enable the first pipe 20 to be communicated with oil, the second pipe 21 to be closed, or the second pipe 21 to be communicated with oil, and the first pipe 20 to be closed.

As shown in fig. 8 and 9, the first pipeline 20 is connected to the top of the hydraulic cylinder 28, the second pipeline 21 is connected to the bottom of the hydraulic cylinder 28, the first pipeline 20 is connected to the oil tank 16 through a first oil return pipe 31, the first oil return pipe 31 is provided with a first switch valve 33, the second pipeline 21 is connected to the oil tank 16 through a second oil return pipe 32, and the second oil return pipe 32 is provided with a second switch valve 34.

As shown in fig. 9, a third through hole 151a is formed in the bottom plate 151, one end of the third through hole 151a is connected to a side surface of the bottom plate 151 (not an upper surface of the bottom plate 151), the other end of the third through hole 151a is connected to a top portion of the hydraulic cylinder 28, and the second pipe 21 is connected to the third through hole 151 a. A fourth through hole 152a is formed in the top plate 152, one end of the fourth through hole 152a is connected to a side surface of the top plate 152 (i.e., a lower surface of the top plate 152), the other end of the fourth through hole 152a is connected to a top portion of the hydraulic cylinder 28, and the first pipe 20 is connected to the fourth through hole 152 a. Hiding the third through hole 151a in the bottom plate 151 and the fourth through hole 152a in the top plate 152 prevents the second duct 21 and the first duct 20 from being positioned between the top plate 152 and the bottom plate 151 to interfere with the cutter.

The implementation principle of the embodiment is as follows: when a cutter is placed between the top plate 152 and the bottom plate 151 during cutter changing, the second switch valve 34 is opened, the first switch valve 33 is closed, then the worm 10 is driven to rotate by a hand drill, the worm 10 drives the worm wheel 9 and the rotating shaft 11 to rotate, the rotating shaft 11 drives the gear pump 12 to pump oil, the oil in the oil tank 16 is supplemented into the liquid inlet 12a of the gear pump 12 from the oil inlet pipe 17 under the action of gravity, the liquid outlet 12b of the gear pump 12 pumps the oil into the oil outlet pipe 18, when the oil in the oil outlet pipe 18 enters the hydraulic cylinder 28 from the first pipeline 20 under the action of the reversing valve 19, the piston 29 is pressed downwards, the top plate 152 fixedly connected with the piston 29 also moves downwards, the cutter can be pressed by the set screw 27 on the top plate 152, and at the moment, the oil in the hydraulic cylinder 28 is pressed into the oil return tank 16 through the second pipeline.

When the tool needs to be loosened, the oil path of the reversing valve 19 is switched, so that the oil outlet pipe 18 pumps oil into the second pipeline 21, the oil outlet pipe 18 is not communicated with the first pipeline 20, the first switch valve 33 is opened, the second switch valve 34 is closed, then the worm 10 is driven to rotate by a hand drill, the pumped oil enters the hydraulic cylinder 28 from the second pipeline 21, the piston 29 ascends, the top plate 152 fixedly connected with the piston 29 also moves upwards, the tightening screw 27 on the top plate 152 loosens the tool, and at the moment, the oil in the hydraulic cylinder 28 is pressed back to the oil tank 16 through the first pipeline 20 and the first switch valve 33 in sequence.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (8)

1. The utility model provides a can quick tool changing type horizontal lathe for forging and pressing piece processing, including mount pad (1), be equipped with guide rail (2) and lead screw (3) that are parallel to each other on mount pad (1), the cooperation is equipped with nut seat (4) on lead screw (3), be fixed with sliding seat (5) on nut seat (4), sliding seat (5) and guide rail (2) sliding fit, the one end of mount pad (1) is fixed with bearing frame (6), lead screw (3) are worn to locate in bearing frame (6), the one end that lead screw (3) stretched out bearing frame (6) is fixed with twist grip (7), its characterized in that:

a shell (8) is fixed on the sliding seat (5), a worm wheel (9) and a worm (10) which are meshed with each other are arranged in the shell (8), a rotating shaft (11) is coaxially fixed on the worm wheel (9), and one end of the worm (10) extends out of the shell (8);

a gear pump (12) is fixed at the top of the shell (8), a first gear (13) and a second gear (14) which are meshed with each other are arranged in the gear pump (12), a rotating shaft (11) penetrates through the gear pump (12) and is coaxially fixed with the first gear (13), and a liquid inlet (12 a) and a liquid outlet (12 b) are arranged on the gear pump (12);

the top of the gear pump (12) is provided with a tool rest (15), the tool rest (15) comprises a bottom plate (151) and a top plate (152), the bottom plate (151) is fixed at the top of the gear pump (12), a set screw (27) penetrates through the top plate (152), a hydraulic cylinder (28) is arranged between the bottom plate (151) and the top plate (152), a piston (29) is arranged in the hydraulic cylinder (28) in a matched mode, and the piston (29) is fixedly connected with the top plate (152) through a piston rod (30);

an oil tank (16) is fixed to the top of the tool rest (15), the oil tank (16) is communicated with a liquid inlet (12 a) of the gear pump (12) through an oil inlet pipe (17), an oil outlet pipe (18) is communicated with a liquid outlet (12 b) of the gear pump (12), a reversing valve (19) is arranged on the oil outlet pipe (18), a first pipeline (20) and a second pipeline (21) are communicated with the reversing valve (19), the first pipeline (20) is communicated with the top of the hydraulic cylinder (28), the second pipeline (21) is communicated with the bottom of the hydraulic cylinder (28), the first pipeline (20) is connected with the oil tank (16) through a first oil return pipe (31), a first switch valve (33) is arranged on the first oil return pipe (31), the second pipeline (21) is connected with the oil tank (16) through a second oil return pipe (32), and a second switch valve (34) is arranged on the second oil return pipe (32).

2. A horizontal lathe for quick tool change machining of forged parts as claimed in claim 1, wherein: be equipped with spherical chamber (19 a) in switching-over valve (19), be equipped with first through-hole (19 b) and second through-hole (19 c) on the inner wall of spherical chamber (19 a), first pipeline (20) and first through-hole (19 b) switch-on, second pipeline (21) and second through-hole (19 c) switch-on, be equipped with case (191) in spherical chamber (19 a), be fixed with valve rod (192) and baffle (193) on case (191), valve rod (192) are worn to switching-over valve (19) outer joint handle (194), baffle (193) are rotatable to closing first through-hole (19 b) or second through-hole (19 c).

3. A horizontal lathe for quick tool change machining of forged parts as claimed in claim 1, wherein: the bottom in casing (8) is fixed with circular base (22), and circular base (22) top coaxial be fixed with cylinder guide shaft (23), and pivot (11) cover is on cylinder guide shaft (23), and pivot (11) and cylinder guide shaft (23) are coaxial, pivot (11) and cylinder guide shaft (23) normal running fit.

4. A horizontal lathe for quick tool change for machining forged parts according to claim 3, wherein: the bottom shaping of pivot (11) has annular flange (11 a), the lower surface and worm wheel (9) fixed connection of annular flange (11 a), worm wheel (9) overlap on circular base (22), worm wheel (9) and cylinder guide shaft (23) enclose into annular groove (24), the lower surface shaping of annular flange (11 a) has annular lug (11 b), annular lug (11 b) stretches into annular groove (24), be equipped with plane thrust bearing (25) between the lower surface of annular lug (11 b) and the upper surface of circular base (22), be equipped with sphere thrust bearing (26) between the inboard cambered surface of annular lug (11 b) and cylinder guide shaft (23).

5. A horizontal lathe for quick tool change machining of forged parts as claimed in claim 1, wherein: a third through hole (151 a) is formed in the bottom plate (151), one end of the third through hole (151 a) is communicated with any side surface of the non-upper surface of the bottom plate (151), the other end of the third through hole (151 a) is communicated with the bottom in the hydraulic cylinder (28), and the second pipeline (21) is communicated with the third through hole (151 a); a fourth through hole (152 a) is formed in the top plate (152), one end of the fourth through hole (152 a) is communicated with any side face of the non-lower surface of the top plate (152), the other end of the fourth through hole (152 a) is communicated with the top of the hydraulic cylinder (28), and the first pipeline (20) is communicated with the fourth through hole (152 a).

6. A horizontal lathe for quick tool change machining of forged parts as claimed in claim 1, wherein: the end part of the worm (10) extending out of the shell (8) is provided with a countersunk hexagon socket head (10 a).

7. A horizontal lathe for quick tool change machining of forged parts as claimed in claim 1, wherein: the upper portion of casing (8) and gear pump (12) inlay in sliding seat (5) fixedly, are equipped with breach (1 a) on mount pad (1), and the lower part of casing (8) is located in breach (1 a).

8. A horizontal lathe for quick tool change machining of forged parts as claimed in claim 1, wherein: the outer wall of the shell (8) is provided with a jack (8 a), and the screw rod (3) is inserted into the jack (8 a).

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