CN117532037A - Boring machine tool for valve drill - Google Patents

Abstract

The invention provides a valve drill boring machine tool, which relates to the technical field of machine tools, wherein a movable table II is arranged at the top of a side box, and a shaft replacement assembly is arranged at the top end of the movable table II; the driving component is arranged at the bottom of the movable table I, the bottom of the workpiece placing table II and the bottom of the movable table II, the driving component comprises a stepping motor II and a moving part, one end of the stepping motor II is in transmission connection with a rotating shaft, a screw rod is arranged at the tail end of the rotating shaft, a screw hole through which the screw rod passes is formed in the moving part, the screw hole is composed of a plurality of screw rings, the surface of the screw rod can be lubricated through lubricating liquid, the temperature of the screw rod can be reduced through cooling liquid, lubricating liquid and cooling liquid are automatically discharged, the effect of automatic oiling is achieved, and meanwhile, the screw rod is cooled, and the flexibility and the structural strength of the screw rod under long-time working are maintained.

Description

Boring machine tool for valve drill

Technical Field

The invention relates to the field of machining tools, in particular to a valve drill boring machining tool.

Background

Boring is a well known machining method for forming a precision hole in a workpiece by rotating a cutting tool. Unlike drilling, the bore hole is cut to design by relative movement between the rotating boring head and the workpiece. The boring process is generally used for manufacturing precise holes, trimming holes and occasions with higher requirements on the machining quality of the holes. Boring is widely used for hole processing of a die, guide pillar hole processing and the like;

and the valve is a pipeline accessory for opening and closing a pipeline, controlling the flow direction, adjusting and controlling the parameters (temperature, pressure and flow rate) of the conveying medium. Depending on their function, they can be classified into shutoff valves, check valves, regulating valves, etc. The valve is a control component in the fluid conveying system and has the functions of stopping, adjusting, guiding, preventing backflow, stabilizing pressure, diverting or overflow pressure relief and the like. Valves for fluid control systems, ranging from the simplest shut-off valves to the various valves used in extremely complex automatic control systems, are quite numerous in variety and specification and require the use of precision dies and boring tools to process through precision valves to ensure product accuracy.

In the lathe of traditional valve boring processing, fixed work piece through multiunit anchor clamps structure, again by the movable mechanism of translation carry on boring equipment displacement, bore the bore hole to the work piece, and valve boring processing is often batch, reciprocating type, movable mechanism carries on the number of times that boring equipment removed also is reciprocating type, in boring processing's environment, the piece is many, splash very easily to movable mechanism's lead screw on, the lead screw belongs to precision machinery, the condition of removing the card dun can appear by the piece influence, can't guarantee the flexible removal under the long-time work of movable mechanism, and the lead screw is also influenced the intensity of self structure by the high temperature easily under long-time work, lead screw deformation setting is the fracture.

Disclosure of Invention

The invention aims to provide a valve drilling and boring machine tool for solving the technical problems. To achieve the purpose, the invention adopts the following technical scheme:

a valve bores the boring machine tool, including the working table, movable table one, work piece place the table and side case, movable table one and work piece place the table and install above the working table separately, the side case is installed outside the working table;

a second movable table is arranged at the top of the side box, and a shaft replacement assembly is arranged at the top end of the second movable table;

the device comprises a movable table I, a workpiece placing table II and a movable table II, wherein the movable table I, the workpiece placing table II and the movable table II are respectively provided with a driving component, the driving components comprise a stepping motor II and a moving part, one end of the stepping motor II is in transmission connection with a rotating shaft, the tail end of the rotating shaft is provided with a screw rod, a screw hole for the screw rod to penetrate through is formed in the moving part, the screw hole consists of a plurality of wire rings, a release opening is formed in the position of an included angle of the wire rings, and an opening and closing part is arranged in the release opening;

the outer wall of the screw rod is provided with a plurality of circles of threads matched with the wire rings, the sharp corners of the outer wall of the threads are provided with protruding propping parts, and the protruding propping parts are movably connected with the opening and closing parts.

According to the design, the movable part is used for containing lubricating liquid, when the driving assembly operates, the driving assembly props against the opening and closing part to contact and control the opening and closing of the driving assembly, so that the lubricating liquid permeates to the surface of the screw rod, and the flexibility of the screw rod operation is maintained.

Further preferred embodiments are as follows: the shaft replacing assembly comprises a first stepping motor and a carrying disc, the first stepping motor is arranged at the top of the second movable table, the carrying disc is arranged at the tail end of a first rotating shaft of the stepping motor, and the carrying disc rotates along with the rotation of the first rotating shaft of the stepping motor;

the outer edge of the carrying disc is fixedly surrounded by a plurality of clamping pieces, holes are formed in the outer ends of the clamping pieces, and a milling cutter shaft is detachably arranged in each hole;

specific: the first movable table is provided with a mounting frame at the top, one end of the mounting frame is provided with a cutting shaft cylinder, and the outer end of the cutting shaft cylinder is provided with a mounting hole for mounting a milling cutter shaft;

according to the design, the carrying disc carries the milling cutter shaft, so that the effect of rapidly switching the milling cutter shaft can be achieved.

Further preferred embodiments are as follows: the milling cutter shaft faces the direction of the mounting hole of the cutting shaft cylinder;

and the movable table I and the movable table II are respectively translated along the X direction and the Y direction under the driven state, and a plurality of milling cutter shafts and mounting holes can be mounted in a switching manner.

Further preferred embodiments are as follows: the length of the hole of the clamping piece is 50% -90% of the total length of the milling cutter shaft;

according to the design, the cutting edge position of the milling cutter shaft is protected through the clamping piece, and the milling cutter shaft is prevented from being broken.

Further preferred embodiments are as follows: the fixture is arranged at the top of the workpiece placing table, the workpiece cylinder is arranged at the top of the fixture, the mounting opening for bearing the workpiece is arranged in the workpiece cylinder, the fasteners for clamping the top of the workpiece cylinder are arranged at two sides of the top of the fixture through bolts and nuts, and the mounting height of the fasteners is adjusted along with the adjustment of the bolts and the nuts;

a positioning part is arranged in the mounting opening of the workpiece cylinder, a through hole-shaped drilling and boring reserved groove a is formed in the outer end of the workpiece cylinder, a drilling and boring reserved groove b corresponding to the drilling and boring reserved groove b is formed in the positioning part, and the drilling and boring reserved groove a and the drilling and boring reserved groove b correspond to the mounting hole of the cutting shaft cylinder;

according to the design, when the workpiece is installed in the workpiece cylinder, the workpieces with different specifications can be fixed through the fastener.

Further preferred embodiments are as follows: the top of the workbench is detachably provided with a protective cover covering the clamp through bolts, and one surface of the protective cover corresponding to the drilling and boring reserved groove a is provided with a reserved groove;

according to the design, the protective cover is preferably made of an acrylic plate, is transparent, protects cutting scraps from splashing, and can visually see the state of a workpiece when boring holes are drilled.

Further preferred embodiments are as follows: the tail end of the screw rod is provided with a fixed block, and the side surface of the fixed block is provided with a through hole for the screw rod to penetrate through, and the inner diameter of the through hole is larger than the outer diameter of the screw rod;

the movable part is internally provided with a hollow cavity, an inner partition is arranged in the hollow cavity, the inner wall of the inner partition is fixedly arranged with the inner wall of the hollow cavity, the inner wall of the inner partition is provided with a plurality of gear rings, gaps are arranged between every two adjacent gear rings, the gear rings and the gaps are orderly staggered in sequence, and the gear rings are communicated with the release opening;

the outer wall of the moving part is provided with two interfaces, one of the interfaces is communicated with the hollow cavity, the other interface is communicated with the inner partition, and the hollow cavity is divided into two spaces by the inner partition;

two liquids, such as lubricating liquid and cooling liquid, can be contained through the hollow cavity and the inner partition piece, so that low-temperature output of the lubricating liquid is ensured, and deformation and even fracture of the screw rod under long-time working are avoided.

Further preferred embodiments are as follows: the release opening is conical, one end facing the release opening is a thin end, the shape of the opening and closing piece is matched with that of the release opening, the tail end of the opening and closing piece protrudes out of the release opening, and a spring is fixed between the outer wall of the opening and closing piece and the inner wall of the release opening;

the outer diameter of the screw rod is slightly smaller than the inner diameter of the screw hole, the number of the protruding supporting parts is one or a plurality of protruding supporting parts which are larger than one, and the opening and closing part moves outwards of the release opening when the protruding supporting parts are in contact with the opening and closing part;

and a smearing brush is arranged in the moving part and positioned at the port of the screw hole, and the smearing brush is contacted with the screw rod.

Further preferred embodiments are as follows: the moving piece is fixedly connected with the bottom of the first movable table, the bottom of the workpiece placing table and the bottom of the second movable table;

the driving assembly further comprises a sliding rail piece and a sliding rail block, and the sliding rail piece is in sliding connection with the sliding rail block.

The invention has the beneficial effects that:

1. the screw rod is not influenced by the through opening when rotating, the fixing block corresponds to the connection position of the screw rod and the rotating shaft, the connection between the screw rod and the rotating shaft can be protected through the fixing block, and the situation that the screw rod is broken and damaged to a machine due to the fact that the screw rod is connected with the rotating shaft under long-time movement is avoided.

2. When the screw rod rotates in the screw hole, the protruding abutting part of the outer wall of the screw rod enters the screw hole along with the screw rod, the protruding abutting part adjusts the position along with the rotation of the screw rod, the opening and closing part is contacted, the opening and closing part moves outwards of the release opening when the protruding abutting part contacts with the opening and closing part, the release opening is opened, the liquid in the inner partition part and the hollow cavity flows out and permeates to the release opening and gradually flows to the surface of the screw rod, the surface of the screw rod can be lubricated through lubricating liquid, the temperature of the screw rod can be reduced through cooling liquid, the lubricating liquid and the cooling liquid are automatically discharged, the effect of automatic oiling is achieved, meanwhile, the screw rod is cooled, and the flexibility and the structural strength of the screw rod under long-time working are maintained;

the interior of the hollow cavity is divided into two spaces by the inner partition piece, different liquids can be stored in the two spaces, when the lubricating liquid and the cooling liquid are respectively stored, the cooling liquid can be used for cooling the lubricating liquid, so that the lubricating liquid is kept in a low-temperature state when being output, and the normal operation of the screw rod is prevented from being influenced by the high-temperature lubricating liquid;

3. the protruding supporting parts can be arranged in each two circles, so that when the screw rod rotates for two circles, the opening and closing part is extruded by the protruding supporting parts once, the extruded frequency of the opening and closing part can be reduced, waste caused by excessive liquid release amount is avoided, the working time is long, when the liquid amount requirement is high, one protruding supporting part or two protruding supporting parts can be arranged in each circle, when the screw rod rotates, the opening and closing part can be extruded for multiple times, and the liquid can be released for multiple times, and a person skilled in the art can select the distribution quantity of the protruding supporting parts according to the actual use requirement;

when the screw rod works with high strength, lubricating liquid can be input into the hollow cavity and the inner partition piece, so that the screw rod is maintained to be in a flexible state all the time, and the condition of blocking in the driving process is avoided.

4. The brush is paintd with the lead screw contact, when the lead screw got into the screw, can clean the lead screw surface through the brush is paintd to the right-hand member, and the lead screw rotates a plurality of extrudees release liquid in the screw, stretches out from the screw left side at last, and the brush can brush the lead screw surface through the brush of painting of left end, makes the liquid paint evenly, and under the rotatory condition of lead screw a plurality of times, the moving part can be at the surface continuous displacement of lead screw, and continuous release lubrication liquid and coolant liquid, continuously maintains the good of lead screw structure, prolongs its life, does benefit to the persistence that improves boring processing work.

5. One side of the protective cover, which corresponds to the drilling and boring reserved groove a, is provided with a reserved groove, the milling cutter shaft can penetrate through the reserved groove along with the direct movement of the movable table, which drives the milling cutter to move along the axial clamp direction, and the protective cover can protect valve workpieces from splashing during drilling and boring processing, so that the processing environment is protected.

6. The milling cutter shafts with different specifications or types can be installed through the clamping pieces, when the milling cutter shafts are needed to be switched, the milling cutter shafts in the cutting shaft barrels are directly taken down, the driving assembly is used for controlling the movable table to move towards the direction of the cutting shaft barrels to approach, then the driving assembly at the bottom of the movable table is used for driving the movable table to approach towards the clamping pieces, and the needed milling cutter shafts are inserted into the cutting shaft barrels to finish tool changing.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a schematic view of the back of the overall structure of the present invention;

FIG. 3 is a schematic view of a clamp structure according to the present invention;

FIG. 4 is a schematic view of a workbench according to the present invention;

FIG. 5 is a schematic diagram illustrating the assembly of a second movable stage and a first stepper motor according to the present invention;

FIG. 6 is a schematic diagram showing the assembly of the second movable stage and the first stepper motor (the bottom view of the second movable stage);

FIG. 7 is a schematic view showing a driving assembly of the present invention in a disassembled configuration;

FIG. 8 is a schematic view illustrating the structure separation of the clamping member and the milling cutter shaft according to the present invention;

FIG. 9 is a schematic diagram showing the separation of the moving member and the screw structure according to the present invention;

FIG. 10 is a schematic view of the inside of the moving member structure according to the present invention;

FIG. 11 is a schematic view of the interior of the inner spacer structure of the present invention;

FIG. 12 is a schematic view of the structure of the present invention at A in FIG. 10;

fig. 13 is a schematic view of the opening and closing member according to the present invention.

In the figure: table 1, first movable table 2, mounting frame 201, cutting shaft cylinder 202, side case 3, second movable table 4, first stepping motor 5, mounting plate 6, clip 601, cutter shaft 7, work placement table 8, jig 9, work cylinder 901, fastener 10, driving unit 11, second stepping motor 12, rotation shaft 1201, screw 1202, projecting abutment 1203, moving member 13, screw hole 1301, wire ring 1302, release port 1303, hollow cavity 1304, inner spacer 14, ring gear 1401, opening and closing member 15, spring 1501, applicator brush 16, interface 17, protective cover 18, slide rail member 19, slide rail block 1901, and fixed block 20.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1, 2 and 4-9, a valve drilling and boring machine tool comprises a workbench 1, a movable table 1, a workpiece placing table 8 and a side box 3, wherein the movable table 2 and the workpiece placing table 8 are respectively arranged above the workbench 1, and the side box 3 is arranged outside the workbench 1;

the top of the side box 3 is provided with a second movable table 4, the top end of the second movable table 4 is provided with a shaft replacement assembly, the bottoms of the first movable table 2, the workpiece placing table 8 and the second movable table 4 are respectively provided with a driving assembly 11, and the driving assemblies 11 are arranged above the workbench 1;

specifically, the bottom of the movable table I2, the bottom of the workpiece placing table 8 and the movable table II 4 are all supporting pieces;

the driving assembly 11 comprises a second stepping motor 12 and a moving member 13, wherein one end of the second stepping motor 12 is in transmission connection with a rotating shaft 1201, the tail end of the rotating shaft 1201 is provided with a screw rod 1202, the driving assembly also comprises a slide rail member 19 and a slide rail block 1901, the slide rail member 19 is in sliding connection with the slide rail block 1901, the tail end of the screw rod 1202 is provided with a fixed block 20, in the driving assembly 11, the second stepping motor 12, the slide rail block 1901 and the fixed block 20 are the same group of fixed parts a, the moving member 13 and the slide rail block 1901 are the same group of fixed parts b, because the supporting member is in a moving structure relative to the workbench 1 and the side box 3, the workbench 1 and the side box 3 are in a static structure, when the driving assembly 11 is installed, the same group of fixed parts a can be selectively installed on the workbench 1 and the side box 3, the same group of fixed parts b can be installed on the bottom surface of the supporting member, and the same group of fixed parts a and the same group of fixed parts b (as shown in fig. 5 and 6), and the installation positions of the same group of fixed parts a and the same group of fixed parts b can be exchanged as long as the opposite positions of the two positions;

after the driving assembly 11 is installed, the step motor II 12 is started, the rotating shaft 1201 is driven to rotate through the step motor II 12, the screw rod 1202 synchronously rotates, and the screw rod 1202 is provided with a through hole for the screw rod 1202 to penetrate through and the inner diameter of the screw rod 1202 is larger than the outer diameter of the screw rod 1202 because the side surface of the fixed block 20 is provided with the through hole, the screw rod 1202 is not affected by the through hole when rotating, the fixed block 20 corresponds to the connection position of the screw rod 1202 and the rotating shaft 1201, the connection between the screw rod 1202 and the rotating shaft 1201 can be protected through the fixed block 20, and the situation that the screw rod 1202 is broken and damaged to a machine due to long-time movement of the screw rod 1202 is avoided.

Further, a screw hole 1301 through which the screw rod 1202 penetrates is formed in the moving member 13, the screw hole 1301 is formed by a plurality of screw rings 1302, a release opening 1303 is formed in the position of an included angle of the screw rings 1302, an opening and closing member 15 is arranged in the release opening 1303, a plurality of rings of threads matched with the screw rings 1302 are arranged on the outer wall of the screw rod 1202, when the screw rod 1202 rotates, the screw rod 1202 rotates in the screw hole 1301 of the moving member 13, the threads on the outer wall of the screw rod 1202 are matched with the screw rings 1302, and the rotating screw rod 1202 pushes the moving member 13 to push and translate the supporting member, so that a driving effect is achieved.

Referring to fig. 4, 6, 7, and 9-13, a protruding portion 1203 is disposed at a sharp corner of the outer wall of the thread, the protruding portion 1203 is movably connected with the opening and closing member 15, the end of the opening and closing member 15 protrudes from the release opening 1303, when the screw rod 1202 rotates in the screw hole 1301, the protruding portion 1203 of the outer wall of the screw rod 1202 enters the screw hole 1301 along with the screw rod 1202, and the protruding portion 1203 performs position adjustment along with the rotation of the screw rod 1202, when contacting the opening and closing member 15, the protruding portion 1203 moves towards the outside of the release opening 1303 when contacting the opening and closing member 15, the release opening 1303 is conical, one end facing the release opening 1303 is a thin end, the opening and closing member 15 matches the shape of the release opening 1303 (as shown in fig. 12 and 13), a spring 1501 is fixed between the outer wall of the opening and the inner wall of the release opening 1303, the opening and closing member 15 is lifted by the protruding portion 1203, the spring 1501 is stretched, the release port 1303 is opened, the hollow cavity 1304 is formed in the moving element 13, the inner partition 14 is arranged in the hollow cavity 1304, the inner wall of the inner partition 14 is fixedly arranged with the inner wall of the hollow cavity 1304, the inner partition 14 and the hollow cavity 1304 are communicated with the release port 1303, the lubricating liquid and the cooling liquid are stored in the inner partition 14 and the hollow cavity 1304, after the release port 1303 is opened, the liquid in the inner partition 14 and the hollow cavity 1304 flows out to permeate into the release port 1303 and gradually flows to the surface of the screw rod 1202, the surface of the screw rod 1202 can be lubricated by the lubricating liquid, the temperature of the screw rod 1202 can be reduced by the cooling liquid, the lubricating liquid and the cooling liquid are automatically discharged, the effect of automatic oiling is achieved, and meanwhile, the screw rod 1202 is cooled, and the flexibility and the structural strength of the screw rod 1202 under long-time working are maintained;

because the inside of the hollow cavity 1304 is separated by the inner partition 14, different liquids can be stored in the two spaces, when the lubricating liquid and the cooling liquid are respectively stored, the cooling liquid can be used for cooling the lubricating liquid, so that the lubricating liquid can be kept in a low-temperature state when being output, the high-temperature lubricating liquid is prevented from influencing the normal operation of the screw rod 1202, the outer wall of the moving part 13 is provided with two interfaces 17, one interface 17 is communicated with the hollow cavity 1304, the other interface 17 is communicated with the inner partition 14, a worker can connect an external liquid delivery pipe into the corresponding interface 17 so as to facilitate the delivery of the liquid, and the interfaces 17 are preferably arranged at the top of the side face of the moving part 13 to avoid the movable position of the screw rod 1202 so as not to cause obstruction;

further, the inner wall of the inner partition 14 is provided with a plurality of gear rings 1401, gaps are arranged between adjacent gear rings 1401, liquid in the hollow cavity 1304 can permeate between the gaps of the gear rings 1401, the situation that liquid in the hollow cavity 1304 cannot permeate from the release openings 1303 is avoided, the gear rings 1401 and the gaps are sequentially staggered, the gear rings 1401 and the gaps are communicated with the release openings 1303, and when lubricating liquid and cooling liquid are respectively stored in the hollow cavity 1304 and the inner partition 14, the release openings 1303 sequentially permeate the lubricating liquid and the cooling liquid from left to right;

the number of the protruding propping parts 1203 is one or a plurality of protruding propping parts 1203 is larger than one, of course, the protruding propping parts 1203 can be arranged one for every two circles, so that when the screw rod 1202 rotates for every two circles, the opening and closing piece 15 is extruded once by the protruding propping parts 1203, the extruded frequency of the opening and closing piece 15 can be reduced, waste caused by excessive liquid release amount can be avoided, the working time is long, when the liquid amount is required to be large, one protruding propping part 1203 or two protruding propping parts 1203 can be arranged for every circle, when the screw rod 1202 rotates, the opening and closing piece 15 can be extruded for a plurality of times, and the distribution number of the protruding propping parts 1203 can be selected according to the actual use requirement by a person skilled in the art;

when the screw rod 1202 works with high strength, the lubrication liquid can be input into the hollow cavity 1304 and the inner partition 14, so that the screw rod 1202 is kept in a flexible state all the time, and the condition of blocking in the driving process is avoided.

The position of the release port 1303 connecting with the hollow cavity 1304 can be inclined, so that the liquid can flow into the release port 1303 conveniently;

the outer diameter of the screw rod 1202 is slightly smaller than the inner diameter of the screw hole 1301, so that the outer wall of the protruding abutting part 1203 is prevented from being tightly attached to the inner wall of the screw hole 1301 when the screw rod 1202 enters the screw hole 1301, and the protruding abutting part 1203 is prevented from being worn;

referring to fig. 1, 9-10, a painting brush 16 is disposed in the moving member 13 and located at a port of the screw hole 1301, the painting brush 16 is in a shape of a change, the painting brush 16 contacts with the screw rod 1202, when the screw rod 1202 enters the screw hole 1301 (as shown in fig. 10), the surface of the screw rod 1202 can be cleaned by the painting brush 16 at the right end, the screw rod 1202 rotates in the screw hole 1301 for multiple times to squeeze and release liquid, and finally the surface of the screw rod 1202 extends out from the left side of the screw hole 1301, the painting brush 16 at the left end can brush the surface of the screw rod 1202 to uniformly paint the liquid, and under the condition that the screw rod 1202 rotates for multiple times, the moving member 13 can continuously displace on the outer surface of the screw rod 1202, and continuously releases lubricating liquid and cooling liquid, so that the structure of the screw rod 1202 is continuously maintained, the service life of the screw rod 1202 is prolonged, and the continuity of drilling and boring work is facilitated to be improved.

The sliding rail block 1901 is fixed with the supporting member, and when the moving member 13 is driven by the screw rod 1202, the sliding rail member 19 is slidably connected with the sliding rail block 1901, so that the stable movement of the supporting member can be maintained.

Referring to fig. 1-3, 5, 6 and 8, the shaft replacing assembly includes a stepper motor 5 and a carrying disc 6, wherein a plurality of clamping pieces 601 are fixedly surrounded by the outer edge of the carrying disc 6, holes are formed in the outer ends of the clamping pieces 601, and a milling cutter shaft 7 is detachably arranged in the holes;

the installation frame 201 is installed at the top of the movable table I2, the cutting shaft cylinder 202 is installed at one end of the installation frame 201, the installation hole for installing the milling cutter shaft 7 is formed in the outer end of the cutting shaft cylinder 202, the milling cutter shaft 7 can be installed through the installation hole of the cutting shaft cylinder 202, the clamp 9 is installed at the top of the workpiece placement table 8, the workpiece cylinder 901 is installed at the top of the clamp 9, an installation hole for bearing a workpiece is installed in the workpiece cylinder 901, when a valve workpiece is subjected to drilling and boring processing, the valve workpiece is installed in the installation hole of the workpiece cylinder 901, the fastening pieces 10 for clamping the top of the workpiece cylinder 901 are installed at two sides of the top of the clamp 9 through bolts and nuts, the installation height of the fastening pieces 10 is adjusted along with the adjustment of the bolts and the nuts, the nuts are screwed, the heights of the bolts are adjusted, the fastening pieces 10 are preferably L-shaped (shown in fig. 3), one end of the fastening pieces 10 clamps the workpiece cylinder 901 and part of the position extends to the upper part of the installation hole, and the valve workpiece can be propped against the installation effect is achieved;

further, a positioning part is arranged in the mounting hole of the workpiece barrel 901, a through hole-shaped drilling and boring reserved groove a is formed in the outer end of the workpiece barrel 901, a drilling and boring reserved groove b corresponding to the drilling and boring reserved groove b is formed in the positioning part, the drilling and boring reserved groove a and the drilling and boring reserved groove b correspond to the mounting hole of the cutting shaft barrel 202, when drilling and boring are carried out, the driving assembly 11 controls the movable table I2 to move directly towards the direction of the clamp 9, the milling cutter shaft 7 in the cutting shaft barrel 202 penetrates through the drilling and boring reserved groove a to drill and bore the valve workpiece, and the milling cutter shaft 7 penetrates into the drilling and boring reserved groove b to carry out deep drilling and boring along with the continuous penetration of the milling cutter shaft 7 into the valve workpiece, so that the valve workpiece is suitable for precisely machining;

furthermore, the top of the workbench 1 is detachably provided with a protective cover 18 covered on the clamp 9 through bolts, one surface of the protective cover 18 corresponding to the drilling and boring reserved groove a is provided with a reserved groove, the milling cutter shaft 7 is driven by the movable table I2 to move directly towards the clamp 9, the milling cutter shaft 7 can penetrate through the reserved groove, and fragments can be prevented from splashing when the valve workpiece is drilled and bored through the protective cover 18, so that the processing environment is protected.

Referring to fig. 1, fig. 2, fig. 4-fig. 6 and fig. 8, a first stepper motor 5 is mounted on the top of a second movable table 4, a first carrying disc 6 is mounted at the end of a first 5 rotating shaft 1201 of the stepper motor, the first stepper motor 5 is stopped when the first carrying disc 6 rotates along with the rotation of the first 5 rotating shaft 1201 of the stepper motor, a plurality of clamping pieces 601 are fixedly arranged around the outer edge of the first carrying disc 6, holes are formed in the outer ends of the clamping pieces 601, a milling cutter shaft 7 is detachably mounted in the holes, a plurality of milling cutter shafts 7 with different specifications or types can be mounted through the plurality of clamping pieces 601, when the milling cutter shafts 7 need to be switched, the milling cutter shafts 7 in the cutting shaft cylinders 202 are directly removed, then the first stepper motor 5 is controlled to rotate, the first carrying disc 6 rotates, when the milling cutter shafts 7 with the required types rotate and correspond to the cutting shaft cylinders 202, the first stepper motor 5 stops, then the second movable table 4 is controlled to move towards the direction of the cutting shaft cylinders 202 through a driving component 11, then the first movable table 2 is driven towards the clamping pieces 601 by the driving component 11 at the bottom of the movable table 2, and the milling cutter shafts 7 are close towards the direction of the clamping pieces 601, and then the required milling cutter shafts 7 are inserted into the cutting shaft cylinders 202 to finish the milling cutter;

the length of the hole of the clamping piece 601 is 50% -90% of the total length of the milling cutter shaft 7, the milling cutter shaft 7 can be clamped through the clamping piece 601, the clamped length is ensured not to drop the milling cutter shaft 7, and the cutter position of the milling cutter shaft 7 can be protected.

Claims (10)

1. The utility model provides a valve bores bore hole machine tool, includes workstation, movable table one, work piece place the platform and side case, and movable table one and work piece are placed the platform and are installed in the workstation top respectively, and side case installs in the workstation outside, its characterized in that:

a second movable table is arranged at the top of the side box, and a shaft replacement assembly is arranged at the top end of the second movable table;

the device comprises a movable table I, a workpiece placing table II and a movable table II, wherein the movable table I, the workpiece placing table II and the movable table II are respectively provided with a driving component, the driving components comprise a stepping motor II and a moving part, one end of the stepping motor II is in transmission connection with a rotating shaft, the tail end of the rotating shaft is provided with a screw rod, a screw hole for the screw rod to penetrate through is formed in the moving part, the screw hole consists of a plurality of wire rings, a release opening is formed in the position of an included angle of the wire rings, and an opening and closing part is arranged in the release opening;

the outer wall of the screw rod is provided with a plurality of circles of threads matched with the wire rings, the sharp corners of the outer wall of the threads are provided with protruding propping parts, and the protruding propping parts are movably connected with the opening and closing parts.

2. A valve boring machine according to claim 1, wherein: the shaft replacing assembly comprises a first stepping motor and a carrying disc, the first stepping motor is arranged at the top of the second movable table, the carrying disc is arranged at the tail end of a first rotating shaft of the stepping motor, and the carrying disc rotates along with the rotation of the first rotating shaft of the stepping motor;

the outer edge of the carrying disc is fixedly surrounded by a plurality of clamping pieces, holes are formed in the outer ends of the clamping pieces, and a milling cutter shaft is detachably arranged in each hole.

3. A valve boring machine according to claim 2, wherein: the first top of the movable table is provided with a mounting frame, one end of the mounting frame is provided with a cutting shaft cylinder, and the outer end of the cutting shaft cylinder is provided with a mounting hole for mounting a milling cutter shaft.

4. A valve boring machine according to claim 3, wherein: the milling cutter shaft faces the direction of the mounting hole of the cutting shaft cylinder;

and the movable table I and the movable table II are respectively translated along the X direction and the Y direction under the driven state, and a plurality of milling cutter shafts and mounting holes can be mounted in a switching manner.

5. A valve boring machine according to claim 4, wherein: the length of the hole of the clamping piece is 50% -90% of the total length of the milling cutter shaft.

6. A valve boring machine according to claim 3, wherein: the fixture is arranged at the top of the workpiece placing table, the workpiece cylinder is arranged at the top of the fixture, the mounting opening for bearing the workpiece is arranged in the workpiece cylinder, the fasteners for clamping the top of the workpiece cylinder are arranged at two sides of the top of the fixture through bolts and nuts, and the mounting height of the fasteners is adjusted along with the adjustment of the bolts and the nuts;

the positioning part is arranged in the mounting opening of the workpiece cylinder, the outer end of the workpiece cylinder is provided with a through hole-shaped drilling and boring reserved groove a, the positioning part is provided with a drilling and boring reserved groove b corresponding to the drilling and boring reserved groove b, and the drilling and boring reserved groove a and the drilling and boring reserved groove b correspond to the mounting hole of the cutting shaft cylinder.

7. A valve boring machine according to claim 6, wherein: the top of the workbench is detachably provided with a protective cover covered on the clamp through bolts, and one surface of the protective cover corresponding to the drilling and boring reserved groove a is provided with a reserved groove.

8. A valve boring machine according to claim 1, wherein: the tail end of the screw rod is provided with a fixed block, and the side surface of the fixed block is provided with a through hole for the screw rod to penetrate through, and the inner diameter of the through hole is larger than the outer diameter of the screw rod;

the movable part is internally provided with a hollow cavity, an inner partition is arranged in the hollow cavity, the inner wall of the inner partition is fixedly arranged with the inner wall of the hollow cavity, the inner wall of the inner partition is provided with a plurality of gear rings, gaps are arranged between every two adjacent gear rings, the gear rings and the gaps are orderly staggered in sequence, and the gear rings are communicated with the release opening;

the outer wall of the moving part is provided with two interfaces, one of the interfaces is communicated with the hollow cavity, the other interface is communicated with the inner partition, and the interior of the hollow cavity is partitioned into two spaces through the inner partition.

9. A valve boring machine according to claim 1, wherein: the release opening is conical, one end facing the release opening is a thin end, the shape of the opening and closing piece is matched with that of the release opening, the tail end of the opening and closing piece protrudes out of the release opening, and a spring is fixed between the outer wall of the opening and closing piece and the inner wall of the release opening;

the outer diameter of the screw rod is slightly smaller than the inner diameter of the screw hole, the number of the protruding supporting parts is one or a plurality of protruding supporting parts which are larger than one, and the opening and closing part moves outwards of the release opening when the protruding supporting parts are in contact with the opening and closing part;

and a smearing brush is arranged in the moving part and positioned at the port of the screw hole, and the smearing brush is contacted with the screw rod.

10. A valve boring machine according to claim 1, wherein: the moving piece is fixedly connected with the bottom of the first movable table, the bottom of the workpiece placing table and the bottom of the second movable table;

the driving assembly further comprises a sliding rail piece and a sliding rail block, and the sliding rail piece is in sliding connection with the sliding rail block.