CN115921945A

CN115921945A - Automatic reaming device for valve body

Info

Publication number: CN115921945A
Application number: CN202211684493.6A
Authority: CN
Inventors: 岳川; 柏大勇
Original assignee: Shandong Huaheng Intelligent Equipment Co ltd
Current assignee: Shandong Huaheng Intelligent Equipment Co ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-04-07

Abstract

The invention relates to the technical field of valve body processing, and particularly provides an automatic reaming device for a valve body, which comprises a processing table, a multi-station clamping device arranged on the processing table and a multi-station reaming device arranged on the processing table, wherein the multi-station reaming device comprises a reaming head and a reaming head; the device provided by the invention can be used for reaming valve bodies with different channel sizes by changing and adjusting the reaming size of the reducing reaming bit, so that the frequent replacement of the bit is avoided, and the applicability of the reaming bit is improved; in addition, the diameter-variable expanding drill bit is provided with the detachable and replaceable expanding cutter head, so that in practical use, only the expanding cutter head part needs to be replaced to solve the problems of reduction of the sharpness of the drill bit and reduction of the machining precision, and in addition, the problems of reduction of the size and the precision of the drill bit can be solved by a mode of trimming the expanding cutter head and additionally adjusting the diameter variation.

Description

Automatic reaming device for valve body

Technical Field

The invention relates to the technical field of valve body machining, and particularly provides an automatic reaming device for a valve body.

Background

The valve body is a main part in the valve and a shell part in the valve, and manufacturing modes such as casting, forging and the like can be adopted in the manufacturing process according to different pressure grades. In daily life, more common valve body structure mainly adopt cast mode machine-shaping, generally adopt solid casting during the valve body casting, its structural pilot hole will carry out subsequent drilling processing after accomplishing the casting, and valve body passageway hole generally can adopt the mode of boring earlier then reaming to carry out machine-shaping.

Under the prior art, when carrying out reaming processing to the valve body, can adopt the reaming bit of certain reaming size to carry out reaming processing, the quality of this kind of reaming bit is reliable, and processing is stable, nevertheless has following problem equally:

1) The reaming size of a single reaming bit is fixed, the reaming processing treatment can only be carried out on the valve body with a certain specific channel size, and when the channel size of the valve body to be processed is different, the corresponding reaming bit needs to be replaced.

2) The reaming drill bit is used as a consumable material for reaming, a large amount of heat can be generated during reaming, along with the increase of the reaming times, the annealing phenomenon of the drill bit can be caused by the large amount of heat, so that the sharpness of the reaming drill bit is greatly reduced, and along with the increase of the reaming times, the reaming drill bit can be worn and torn, the reaming size is reduced, the reaming precision is greatly reduced, and the frequency of drill bit scrapping is greatly increased.

Disclosure of Invention

In order to solve the above problems, the present invention provides an automatic reaming device for a valve body, which is used to solve the above problems in the background art.

In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose: the utility model provides an automatic reaming device of valve body, includes the processing platform, installs the multistation clamping device on the processing platform and install the multistation reaming device on the processing platform.

The multi-station clamping device comprises a plurality of positioning clamps which are fixed on the processing table and used for positioning and clamping the valve body, and a clamping execution assembly which is used for synchronously driving the plurality of positioning clamps to execute clamping action.

The multi-station bit expanding device comprises a vertical carry mechanism fixed on the table surface of the processing table and a plurality of bit expanding motors fixed at the carry ends of the vertical carry mechanism and capable of lifting synchronously; the plurality of drilling expanding motors and the plurality of positioning fixtures are vertically aligned in a one-to-one correspondence manner; and a reducing and expanding drill bit capable of adjusting the diameter of the expanded drill is fixed on an output shaft of the expanded drill motor.

Preferably, the reducing reamer bit is including fixing the drilling rod on the motor output shaft that expands drills, circumference evenly distributed has a plurality of movable rods that can adjust along radial synchronous movement on the drilling rod, keep away from on the movable rod the end department of expanding the motor output shaft that expands drills can dismantle fixed mounting has the reaming tool bit.

Preferably, the drill rod is sequentially provided with an end head part, a disc part, a round rod part and an end socket part along the axial direction; the head sealing part is detachably fixed on the round rod part; the circular rod part is provided with a plurality of embedded grooves which are evenly distributed on the circumference, the connecting end of the embedded groove at the end sealing part is in an opening shape, the connecting end of the circular rod part and the connecting end of the circular rod part are in a hollow structure, a plurality of movable rods are embedded into the plurality of embedded grooves in a one-to-one corresponding sliding mode, and guide grooves which are in sliding fit with the movable rods are arranged on two sides of each embedded groove.

Preferably, a wedge block end and a cutter head fixing end are respectively arranged at two ends of the movable rod in the length direction, the wedge block end extends into an inner cavity of the disc part, a guide hole is correspondingly formed in the side wall of the disc part relative to each movable rod, the guide hole axially points to the center of the disc part, a guide pin is slidably installed in the guide hole, the guide pin is fixedly installed on the wedge block end of the movable rod at the opposite position in a threaded manner, and an inner support spring is sleeved on the guide pin; the fixed end of the cutter head penetrates through the head sealing part downwards, and the reaming cutter head is installed at the fixed end of the cutter head in an embedded mode; the upper end of the sealing head is provided with a thread, the thread is rotatably provided with a reducing driving rod, the reducing driving rod penetrates through the center shaft of the circular rod part, one end of the reducing driving rod, which extends into the circular disk part, is fixedly provided with an adjusting circular table, the inclined surface of the end of the wedge block is contacted with the side surface of the adjusting circular table, and the inner supporting spring is clamped and contracted between the inner wall of the circular disk part and the side wall of the end of the wedge block.

Preferably, the positioning fixture comprises a fixture table fixed on the table surface of the processing table, the fixture table is cylindrical, and the central axis of the fixture table is overlapped with the central axis of the output shaft of the drill expanding motor at the corresponding position; a plurality of clamping block assemblies are uniformly distributed on the circumference of the clamp table, each clamping block assembly comprises a positioning clamping block which moves and is adjusted along the radial direction of the clamp table, a clamping driving assembly is also assembled on the clamp table, and the clamping execution assembly indirectly drives the plurality of positioning clamping blocks to move and be adjusted synchronously by driving the clamping driving assembly; and a bearing plate is horizontally arranged on one side of the positioning clamping block, which is close to the center of the clamp table.

Preferably, a plurality of sliding grooves are formed in the fixture table in one-to-one correspondence to the plurality of positioning clamping blocks, and the positioning clamping blocks are slidably mounted on the sliding grooves.

Preferably, the clamping block assembly further comprises a fixing plate and a tension spring; the fixing plate is fixedly installed at one end, far away from the center of the clamp table, of the sliding groove, a round hole is horizontally formed in the positioning clamping block, one end of the tension spring is embedded and fixed to the inner end of the round hole, and the other end of the tension spring is fixed to the fixing plate.

Preferably, the clamping driving assembly comprises a rotary ring which is sleeved and fixed on the clamp table, a plurality of supporting blocks which are arranged in one-to-one correspondence with the plurality of positioning clamping blocks are fixedly installed on a rotating part of the rotary ring, a driving wedge block is horizontally fixed on each supporting block, and a roller which is in rolling contact with the inclined surface of the driving wedge block is vertically and rotatably installed on each positioning clamping block; a gear ring is fixed on the rotating part of the rotary ring, and the clamping execution assembly comprises a driving cylinder fixed on the processing table, a rack guide rail horizontally fixed on the processing table and a rack arranged along the rack guide rail in a sliding manner; the positioning clamps are linearly distributed along the direction of the rack guide rail, and a gear ring in each positioning clamp is meshed with the rack; the rack is fixedly connected to the output end of the driving cylinder.

The technical scheme has the following advantages or beneficial effects: 1. the invention provides an automatic reaming device for a valve body, wherein a reducing reaming bit is assembled in the device, and reaming processing can be performed on the valve bodies with different channel sizes by changing and adjusting the reaming size of the reducing reaming bit within a diameter-variable range, so that frequent replacement of the bit is avoided, and the applicability of the reaming bit is improved; in addition, the diameter-variable expanding drill bit is provided with the detachable and replaceable expanding cutter head, and during actual use, only the expanding cutter head needs to be replaced to solve the problems of reduction of the sharpness of the drill bit and reduction of the machining precision, and in addition, the problems of reduction of the size and the precision of the drill bit can be solved by trimming the mode of additionally adding the diameter-variable adjustment to the expanding cutter head.

2. The invention provides an automatic reaming device for valve bodies, which is provided with a multi-station clamping device and can synchronously clamp and position a plurality of valve bodies so as to facilitate axial alignment reaming, and in addition, the multi-station reaming device is arranged in a matching manner, so that multi-station batch reaming processing can be performed.

Drawings

The invention and its features, aspects and advantages will become more apparent from reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings. The drawings, in which like numerals refer to like parts throughout the several views and which are not necessarily drawn to scale, emphasis instead being placed upon illustrating the principles of the invention.

Fig. 1 is a schematic perspective view of an automatic reaming device for a valve body according to the present invention at a viewing angle.

Fig. 2 is a schematic perspective view of an automatic reaming device for a valve body according to another view angle.

Fig. 3 is a partially enlarged schematic view at a in fig. 1.

Fig. 4 is a side view of an automatic reaming device for a valve body according to the present invention.

Fig. 5 is a partially enlarged schematic view at B in fig. 4.

Fig. 6 is a front view of an automatic reaming device for a valve body according to the present invention.

Fig. 7 is a top view of an automatic reaming device for a valve body according to the present invention.

Fig. 8 is a perspective view of a variable diameter reamer bit from one viewing angle.

Fig. 9 is a perspective view of a variable diameter reamer bit from another perspective.

Fig. 10 is a cross-sectional view of a reducing reamer bit.

Fig. 11 is a partially enlarged schematic view at C in fig. 10.

Fig. 12 is a perspective view of the valve body.

In the figure: 1. a processing table; 11. a waste window; 2. a multi-station clamping device; 21. positioning a clamp; 22. a jig stage; 221. a position avoiding groove; 222. avoiding holes; 223. a chute; 23. a clamp block assembly; 231. positioning the clamping block; 2311. a support plate; 2312. a circular hole; 2313. a roller; 232. a fixing plate; 233. a tension spring; 24. a clamp drive assembly; 241. a rotary ring; 242. a ring gear; 243. a support block; 244. driving a wedge block; 25. a clamping actuator assembly; 251. a driving cylinder; 252. a rack guide rail; 253. a rack; 3. a multi-station drill expanding device; 31. a vertical carry mechanism; 311. a frame; 3111. a vertical guide rail; 312. a carry motor; 313. a lead screw; 314. a travel beam; 315. a lifting slide block; 32. a drill expanding motor; 4. a reducing and expanding drill bit; 41. a drill stem; 411. an end portion; 412. a disk portion; 4121. a guide hole; 413. a round bar part; 4131. caulking grooves; 4132. a guide groove; 414. a sealing head part; 415. a waste discharge tank; 42. a movable rod; 421. the end of the wedge block; 422. a tool bit fixing end; 43. a pilot pin; 44. an inner supporting spring; 45. a reaming cutter head; 46. a variable-diameter driving rod; 461. the round platform is adjusted.

Detailed Description

The following detailed description of the embodiments of the present invention is provided to help those skilled in the art to more fully, accurately and deeply understand the conception and the technical solution of the present invention, and to assist the implementation thereof, by referring to the accompanying drawings and the description of the embodiments, but not to limit the present invention.

As shown in fig. 1, 2, 4, 6 and 7, the automatic reaming device for the valve body comprises a processing table 1, a multi-station clamping device 2 installed on the processing table 1 and a multi-station reaming device 3 installed on the processing table 1. In this embodiment, the present invention is mainly directed to an automatic hole expanding process for a valve body having a structure as shown in fig. 12.

As shown in fig. 1 and 6, the multi-station clamping device 2 includes four positioning jigs 21 fixed on the processing table 1 for positioning and clamping the valve body, and a clamping executing assembly 25 for synchronously driving the four positioning jigs 21 to execute a clamping action.

As shown in fig. 3 and 5, the positioning fixture 21 includes a fixture table 22 fixed on the table top of the processing table 1 by bolts, the fixture table 22 is cylindrical, four sliding slots 223 are uniformly distributed on the circumference of the fixture table 22, and the guide directions of the sliding slots 223 are arranged along the radial direction of the fixture table 22; four clamping block assemblies 23 are uniformly distributed on the circumference of the clamp table 22, and the four clamping block assemblies 23 are correspondingly distributed at the positions of the four sliding grooves 223 one by one; the clamping block assembly 23 comprises positioning clamping blocks 231 which are slidably mounted in sliding grooves 223, a position avoiding groove 221 for moving and avoiding positions of the four positioning clamping blocks 231 is formed in the center of the fixture table 22, a position avoiding hole 222 for reaming and processing the position avoiding hole is formed in the position avoiding groove 221, and a waste material window 11 for facilitating waste material discharge is formed in the table top of the processing table 1 and is positioned under the position avoiding hole 222; a bearing plate 2311 is horizontally arranged on one side, close to the center of the clamp table 22, of the positioning clamping block 231, the bearing plate 2311 is used for horizontally bearing and placing the valve body, and a bevel inclined plane convenient for guiding the valve body to be placed is arranged at the top end position, located on the same side of the bearing plate 2311, of the positioning clamping block 231; the clamping block assembly 23 further comprises a fixing plate 232 and a tension spring 233; the fixing plate 232 is fixedly installed at one end, far away from the center of the clamp table 22, of the sliding groove 223 through bolts, a round hole 2312 is horizontally formed in the positioning clamping block 231, one end of the tension spring 233 is embedded and welded at the inner end of the round hole 2312, and the other end of the tension spring 233 is welded on the fixing plate 232.

As shown in fig. 3 and fig. 5, the clamping table 22 is further equipped with a clamping driving assembly 24, and the clamping executing assembly 25 indirectly drives the positioning clamping blocks 231 to synchronously move and adjust by driving the clamping driving assembly 24; the clamping driving assembly 24 comprises a rotary ring 241 which is sleeved and welded on the clamp table 22, four supporting blocks 243 which are arranged in one-to-one correspondence with four positioning clamping blocks 231 are welded on the rotary part of the rotary ring 241, a driving wedge 244 is horizontally welded on the supporting blocks 243, and a roller 2313 which is in rolling contact with the inclined surface of the driving wedge 244 is vertically and rotatably installed on the positioning clamping blocks 231; the rotating part of the rotary ring 241 is integrally formed with a gear ring 242, and the clamping executing assembly 25 comprises a driving cylinder 251 fixed on the processing table 1, a rack guide rail 252 horizontally welded on the processing table 1, and a rack 253 arranged along the rack guide rail 252 in a sliding manner; the four positioning clamps 21 are linearly and uniformly distributed along the direction of the rack guide rail 252, and the gear ring 242 in each positioning clamp 21 is meshed with the rack 253; the rack 253 is fixedly connected to the output end of the driving cylinder 251.

The multi-station clamping device 2 can simultaneously position and clamp four valve bodies, and flange ends with the same size are arranged at two ends of a valve body channel shown in fig. 12, so that during actual clamping operation, the flange end at one side of each valve body can be randomly selected to be horizontally placed on the bearing plates 2311 of the four positioning clamping blocks 231 in the positioning clamp 21, and therefore before the valve bodies are placed and clamped, the positions of the four positioning clamping blocks 231 in the positioning clamp 21 can be pre-adjusted according to the diameter of the flange ends of the valve bodies, so that the valve bodies can be placed on the four bearing plates 2311. It should be noted that, in the adjustment process, the position states of the positioning blocks 231 in the four positioning jigs 21 are consistent.

When the positioning clamp 21 is specifically adjusted, the driving cylinder 251 is started to drive the rack 253 to slide along the rack guide rail 252, and then the four positioning clamps 21 are synchronously adjusted, because the adjustment processes of the four positioning clamps 21 are consistent, the adjustment process of a single positioning clamp 21 is explained, when the rack 253 slides, the gear ring 242 is driven to rotate, so that the rotating ring 241 is driven to rotate, and the four driving wedges 244 are indirectly driven to synchronously rotate around the central axis of the clamp table 22, the inclined surface of the driving wedge 244 pushes the roller 2313, so that the positioning clamp block 231 slides along the sliding groove 223 towards the direction close to the center of the clamp table 22, so that the distance between the four positioning clamp blocks 231 and the center of the clamp table 22 is reduced, when the rack 253 drives the gear ring 242 to reversely rotate, the positioning clamp block 231 is pulled to slide along the sliding groove 223 towards the direction far away from the center of the clamp table 22 under the elastic force of the tension spring 233, and the distance between the positioning clamp block 231 and the center of the clamp table 22 is increased. After the pre-adjustment of the four positioning fixtures 21 is completed synchronously, the four valve bodies to be reamed can be sequentially placed into the four positioning fixtures 21, and then the clamping executing assembly 25 is started again, so that the four positioning fixtures 21 are driven to synchronously clamp the four valve bodies, and after the clamping is completed, the central axis of the valve bodies is coincided with the central axis of the fixture table 22.

As shown in fig. 1, 2, 4 and 6, the multi-station bit expanding device 3 includes a vertical carry mechanism 31 fixed on the table top of the processing table 1 and four bit expanding motors 32 fixed at the carry end of the vertical carry mechanism 31 and lifting synchronously; the four drilling expanding motors 32 and the four positioning clamps 21 are vertically aligned in a one-to-one correspondence manner; the output shaft of the drill expanding motor 32 is fixed with a reducing and expanding drill bit 4 which can adjust the drill expanding radius.

As shown in fig. 1 and 2, the vertical carry mechanism 31 includes a frame 311 welded on the table top of the processing table 1, four vertical guide rails 3111 are welded on the frame 311, and the four vertical guide rails 3111 are linearly and uniformly distributed in the direction of the rack guide rail 252; all slidable mounting has the lift slider 315 on every vertical guide 3111, has travel beam 314 through the common fixedly connected with of bolt between four lift sliders 315, and there is carry motor 312 on the top of frame 311 through bolt fixed mounting, fixedly connected with lead screw 313 on carry motor 312's the output shaft, and lead screw 313 vertically rotates and installs on frame 311, and travel beam 314 and lead screw 313 threaded connection. The four expanding drilling motors 32 are fixedly arranged on the four lifting sliding blocks 315 in a one-to-one correspondence manner through bolts, and the output shafts of the expanding drilling motors 32 are superposed with the central shaft of the clamp table 22; and the four drill expanding motors 32 are uniformly distributed at the same height along the linear direction.

In actual processing, the vertical carry mechanism 31 can drive the four bit expanding motors 32 to complete synchronous bit expanding and carrying. Specifically, the carry motor 312 is started to drive the screw rod to rotate, under the guidance of the four vertical guide rails 3111, the screw rod 313 drives the four lifting slide blocks 315 to descend synchronously together with the travel beam 314, and then drives the four reaming motors to descend synchronously, so that the variable-diameter reaming bit can be driven to perform reaming carry.

As shown in fig. 8 and 9, the reducing reamer bit 4 includes a drill rod 41 fixed on the output shaft of the reamer motor 32, three movable rods 42 capable of moving and adjusting synchronously along the radial direction are uniformly distributed on the drill rod 41 in the circumferential direction, and a reamer head 45 is detachably and fixedly mounted on the end of the movable rod 42 far away from the output shaft of the reamer motor 32.

As shown in fig. 8, 9, 10 and 11, the drill rod 41 includes a head portion 411, a disc portion 412, a round rod portion 413 and a head portion 414 in this order along the axial direction; wherein, the head part 411, the disc part 412 and the round rod part 413 are integrally formed, and the head sealing part 414 is detachably fixed on the round rod part 413 through a screw; three embedded grooves 4131 are uniformly distributed on the circumference of the round rod part 413, the connecting end of the embedded groove 4131 at the end of the head sealing part 414 is open, the connecting end of the round rod part 412 and the end of the round rod part 413 is hollow, three movable rods 42 are embedded into the three embedded grooves 4131 in a one-to-one correspondence and sliding manner, guide grooves 4132 in sliding fit with the movable rods 42 are arranged on two sides of the embedded groove 4131, after the head sealing part 414 is disassembled, the movable rods 42 can be plugged in from the opening end of the embedded groove 4131, after the head sealing part 414 is fixedly installed, the head sealing part 414 is attached to the movable rods 42, and the movable rods 42 can be guided in the radial direction by matching the guide grooves 4132. In addition, three waste discharge grooves 415 for discharging metal scrap during reaming are circumferentially distributed on the whole drill rod 41, the three waste discharge grooves 415 and the three caulking grooves 4131 are uniformly distributed at intervals, and the waste discharge grooves 415 extend at two ends of the drill rod 41.

As shown in fig. 8, 9, 10 and 11, a wedge head 421 and a bit fixing end 422 are respectively disposed at two ends of the movable rod 42 in the length direction, the wedge head 421 extends into the inner cavity of the disc part 412, a guide hole 4121 is correspondingly disposed on the side wall of the disc part 412 opposite to each movable rod 42, the guide hole 4121 axially points to the center of the disc part 412, a guide pin 43 is slidably mounted in the guide hole 4121, the guide pin 43 is fixedly mounted on the wedge head 421 of the movable rod 42 at the opposite position in a threaded manner, an inner support spring 44 is sleeved on the guide pin 43, and the guide pin 43 is used for guiding the inner support of the inner support spring 44; the cutter head fixing end 422 penetrates through the head sealing part 414 downwards, and the reaming cutter head 45 is embedded and installed on the cutter head fixing end 422; the end sealing part 414 is provided with a reducing driving rod 46 in a threaded rotating manner, the reducing driving rod 46 penetrates through the central shaft of the round rod part 413, one end of the reducing driving rod 46 extending into the round disc part 412 is fixed with an adjusting round table 461, the inclined surface of the wedge head 421 contacts with the side surface of the adjusting round table 461, and the inner supporting spring 44 is clamped and contracted between the inner wall of the round disc part 412 and the side wall of the wedge head 421.

The diameter-variable reamer bit 4 can adjust and change the reaming diameter, specifically, the diameter-variable reamer bit can move in the axial direction of the drill rod 41 by rotating the diameter-variable driving rod 46, when the adjusting circular truncated cone 461 increases the abutting force with the inclined plane of the end 421 of the wedge block, the inner supporting spring 44 is gradually compressed, the three movable rods 42 can be synchronously pushed to slide outwards, conversely, when the adjusting circular truncated cone 461 and the abutting wheel of the inclined plane of the end 421 of the wedge block are gradually reduced, the compression amount of the inner supporting spring 44 is released, the movable rods 42 can be pushed to slide inwards, the reamer bit 45 can be synchronously moved by moving the movable rods 42, the reaming diameter is adjusted, and during actual adjustment, rapid diameter-variable alignment adjustment can be performed with the standard reaming diameter as a reference.

The reducing reaming bit 4 is assembled in the device, and the reaming size of the reducing reaming bit 4 can be changed and adjusted in a diameter-variable range to perform reaming processing on valve bodies with different channel sizes, so that the frequent replacement of the bit is avoided, and the applicability of the reaming bit is improved; in addition, the diameter-variable reaming bit 4 is provided with a detachable and replaceable reaming bit 45, and during actual use, only the reaming bit 45 needs to be replaced to deal with the problems of bit sharpness reduction and machining precision reduction, and in addition, the diameter-variable adjustment mode can be added by trimming the reaming bit 45 to deal with the problems of bit size reduction and precision reduction.

When the valve body is subjected to automatic reaming processing, the automatic reaming processing can be carried out according to the following steps:

the four valve bodies are correspondingly placed in the four positioning clamps 21 one by one, and the four positioning clamps 21 are synchronously driven by the clamping execution assembly 25, so that the four valve bodies are simultaneously positioned and clamped.

The hole enlarging diameter of the reducing hole enlarging drill bit 4 is adjusted to the required size state, and the four reducing hole enlarging drill bits 4 are sequentially adjusted to the same degree. And (3) when the same-size valve bodies are reamed in the subsequent batch, maintaining the primarily adjusted reaming size of the reducing reaming bit 4, and omitting the step.

The drill expanding motor 32 is started to drive the reducing and expanding drill bit 4 to rotate, and the reducing and expanding drill bit 4 is driven by the vertical carry mechanism 31 to drill and expand downwards along the central shaft of the valve body until the valve body is completely communicated.

And (4) after hole expansion is finished, the diameter-variable hole expanding drill bit 4 is withdrawn upwards, and the positioning fixture 21 is loosened to take out the valve body after hole expansion is finished.

Those skilled in the art will appreciate that variations may be implemented by those skilled in the art in combination with the prior art and the above-described embodiments, and will not be described in detail herein. Such variations do not affect the essence of the present invention and are not described herein.

The above description is of the preferred embodiment of the invention. It is to be understood that the invention is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; it will be understood by those skilled in the art that various changes and modifications may be made, or equivalents may be modified, without departing from the spirit of the invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.

Claims

1. The utility model provides an automatic reaming device of valve body which characterized in that: comprises a processing table (1), a multi-station clamping device (2) arranged on the processing table (1) and a multi-station drill expanding device (3) arranged on the processing table (1); wherein:

the multi-station clamping device (2) comprises a plurality of positioning clamps (21) which are fixed on the processing table (1) and used for positioning and clamping the valve body, and a clamping execution assembly (25) which is used for synchronously driving the plurality of positioning clamps (21) to execute clamping action;

the multi-station bit expanding device (3) comprises a vertical carry mechanism (31) fixed on the table top of the processing table (1) and a plurality of bit expanding motors (32) fixed on the carry end of the vertical carry mechanism (31) and capable of lifting synchronously; the plurality of drilling expanding motors (32) and the plurality of positioning clamps (21) are vertically aligned in a one-to-one correspondence manner; and a reducing and expanding drill bit (4) capable of adjusting the diameter of the expanded drill is fixed on an output shaft of the expanded drill motor (32).

2. The automatic reaming device for the valve body as claimed in claim 1, wherein: reducing reamer bit (4) are including fixing drilling rod (41) on expanding drill motor (32) output shaft, circumference evenly distributed has a plurality of movable rods (42) that can adjust along radial synchronous motion on drilling rod (41), keep away from on movable rod (42) expand drill motor (32) output shaft's end department can dismantle fixed mounting and have reaming tool bit (45).

3. The automatic reaming device for the valve body as claimed in claim 2, wherein: the drill rod (41) is sequentially provided with an end head part (411), a disc part (412), a round rod part (413) and an end enclosure part (414) along the axial direction; the head sealing part (414) is detachably fixed on the round rod part (413); the circular rod part (413) is circumferentially and uniformly provided with a plurality of embedded grooves (4131), the connecting end of the embedded groove (4131) on the head sealing part (414) is in an opening shape, the connecting end of the circular disk part (412) and the circular rod part (413) is in a hollow structure, the movable rods (42) are embedded into the embedded grooves (4131) in a one-to-one corresponding mode and are slidably mounted in the embedded grooves (4131), and guide grooves (4132) which are in sliding fit with the movable rods (42) are formed in the two sides of the embedded grooves (4131).

4. The automatic reaming device for the valve body according to claim 3, characterized in that: a wedge end (421) and a cutter head fixing end (422) are respectively arranged at two ends of the movable rod (42) in the length direction, the wedge end (421) extends into an inner cavity of the disc part (412), a guide hole (4121) is correspondingly arranged on the side wall of the disc part (412) relative to each movable rod (42), the guide hole (4121) axially points to the center of the disc part (412), a guide pin (43) is slidably arranged in the guide hole (4121), the guide pin (43) is fixedly arranged on the wedge end (421) of the movable rod (42) in the opposite position in a threaded manner, and an inner support spring (44) is sleeved on the guide pin (43); the cutter head fixing end (422) penetrates through the head sealing part (414) downwards, and the reaming cutter head (45) is installed on the cutter head fixing end (422) in an embedded mode; the utility model discloses a wedge block, including head portion (414), head portion (414) go up the screw thread and rotate and install reducing actuating lever (46), reducing actuating lever (46) are followed pole portion (413) center pin runs through, the one end that reducing actuating lever (46) stretched into disc portion (412) is fixed with adjusts round platform (461), the inclined plane of voussoir end (421) with adjust the side contact of round platform (461), interior supporting spring (44) press from both sides the shrink in disc portion (412) inner wall with between voussoir end (421) lateral wall.

5. The automatic reaming device for the valve body as claimed in claim 1, wherein: the positioning clamp (21) comprises a clamp table (22) fixed on the table top of the machining table (1), the clamp table (22) is cylindrical, and the central axis of the clamp table (22) is superposed with the central axis of the output shaft of the bit expanding motor (32) at the corresponding position; a plurality of clamping block assemblies (23) are uniformly distributed on the upper circumference of the clamp table (22), each clamping block assembly (23) comprises a positioning clamping block (231) which moves and adjusts along the radial direction of the clamp table (22), a clamping driving assembly (24) is further assembled on the clamp table (22), and the clamping executing assembly (25) indirectly drives the positioning clamping blocks (231) to move and adjust synchronously by driving the clamping driving assembly (24); and a bearing plate (2311) is horizontally arranged on one side, close to the center of the clamp table (22), of the positioning clamping block (231).

6. The automatic reaming device for the valve body according to claim 5, wherein: the fixture table (22) is provided with a plurality of sliding grooves (223) corresponding to the positioning clamping blocks (231) one to one, and the positioning clamping blocks (231) are slidably mounted on the sliding grooves (223).

7. The automatic reaming device for the valve body as claimed in claim 6, wherein: the clamping block assembly (23) further comprises a fixing plate (232) and a tension spring (233); the fixing plate (232) is fixedly installed at one end, far away from the center of the clamp table (22), of the sliding groove (223), a round hole groove (2312) is horizontally formed in the positioning clamping block (231), one end of the tension spring (233) is embedded and fixed at the inner end of the round hole groove (2312), and the other end of the tension spring is fixed on the fixing plate (232).

8. The automatic reaming device for the valve body as claimed in claim 7, wherein: the clamping driving assembly (24) comprises a rotary ring (241) which is fixedly sleeved on the clamp table (22), a plurality of supporting blocks (243) which are arranged in one-to-one correspondence with the positioning clamping blocks (231) are fixedly installed on the rotary part of the rotary ring (241), a driving wedge block (244) is horizontally fixed on the supporting blocks (243), and a roller (2313) which is in rolling contact with the inclined surface of the driving wedge block (244) is vertically and rotatably installed on the positioning clamping blocks (231); a gear ring (242) is fixed on the rotating part of the rotary ring (241), and the clamping executing assembly (25) comprises a driving cylinder (251) fixed on the processing table (1), a rack guide rail (252) horizontally fixed on the processing table (1) and a rack (253) arranged along the rack guide rail (252) in a sliding manner; the positioning clamps (21) are distributed linearly along the direction of the rack guide rail (252), and the gear ring (242) in each positioning clamp (21) is meshed with the rack (253); the rack (253) is fixedly connected to the output end of the driving cylinder (251).