CN116135443B

CN116135443B - Single-source multi-independent-output mechanical transmission structure and clamp

Info

Publication number: CN116135443B
Application number: CN202310415935.5A
Authority: CN
Inventors: 洪树心; 卢峰
Original assignee: North Valve Group Co ltd
Current assignee: North Valve Group Co ltd
Priority date: 2023-04-19
Filing date: 2023-04-19
Publication date: 2023-06-13
Anticipated expiration: 2043-04-19
Also published as: CN116135443A

Abstract

The invention discloses a single-source multi-independent output mechanical transmission structure and a clamp, which belong to the field of mechanical processing, wherein the transmission structure comprises a power shaft, at least two power output gears are sleeved on the power shaft, the power shaft is respectively connected with any power output gear in a transmission way through a password transmission mechanism, the password transmission mechanism presents two torque connection states of on-off through whether password actions are triggered, the power shaft triggers the corresponding password transmission mechanism through different password actions to realize the output of torque to the corresponding power output gear, the clamp adopts the transmission structure as a power transmission structure, the complexity of a driving part is greatly reduced, the structural volume is remarkably reduced, the clamp can be more easily installed in a numerical control machine tool, more space is reserved for a valve body to be processed, the volume of the valve body to be processed is larger, the valve body can be stably processed by adopting an auxiliary clamping tooth assembly to clamp a longer end part, and the end face processing precision is further improved.

Description

Single-source multi-independent-output mechanical transmission structure and clamp

Technical Field

The invention relates to the technical field of machining, in particular to a single-source multi-independent-output mechanical transmission structure which only uses a single power source and a pure mechanical transmission structure to realize multi-path independent power output and a clamp realized by using the structure.

Background

The three-way valve body is a pipeline part widely applied, and the common three-way valve body structure is provided with three pipe orifice ends and a valve body communicated with the three pipe orifices, wherein the common three-way valve body is generally T-shaped, two pipe orifices are coaxially arranged, and one pipe orifice is vertical to the two pipe orifices. There is also a Y-shaped configuration of three-way valve. The application relates to a three-way valve with a T-shaped configuration. The three pipe orifices of the three-way valve body are respectively provided with a flange structure, and a plurality of uniformly distributed fixed mounting through holes are arranged on the flange structure. The flange surface and the through hole are required to be machined to ensure that the flange surface is smooth and flawless, and the position is accurate, so that the requirements of precision and tightness of connection with pipelines and the like are met. This requires precise machining of the through-hole and flange interfaces at each end during manufacture of the three-way valve body. In the processing process, the three-way valve body is clamped stably and reliably by using the clamp, and the angles of the flange faces of the three-way valve body are ensured to meet the requirements.

The clamp adopted in the prior art is used for clamping once, clamping and processing one end face once, loosening the clamp and rotating the valve body after the processing is finished, fastening and clamping again, processing the next end face, and a three-way valve needs to be continuously clamped, processed, loosened, rotated by a plurality of times, and recycled, so that the processing efficiency is low. For large valves, a three-way valve body is tens of kilograms heavy, workers are very laborious in carrying and rotating the valve, machining efficiency is low, alignment is required to be adjusted after clamping each time, positioning inaccuracy is easy to occur, machining precision of end faces is affected, especially relative angle errors of flange faces are increased, the large valve body is relatively heavy, clamping states are unstable in the machining process, valve body displacement in the machining process is easy to occur, machining quality of the valve body is reduced, and on the other hand, simply improving clamping torque intensity easily causes surface and structure damage of the valve body and affects product quality.

In conclusion, the whole quality of the large three-way valve processed at home at present is worry. Therefore, the existing three-way valve body clamping scheme cannot meet the requirement of high-precision and mass production. The three-way valve body is clamped by the clamp to rotate at multiple angles, so that a plurality of driving structures are involved, each driving structure is driven by an independent driving motor, however, in a machining station of a numerical control lathe, the space is narrow, the plurality of driving motors and related systems for increasing the clamp are increased in size, the complexity of the system is obviously increased, the unreliability of the system is increased, the failure rate is improved, the maintainability is poor, the clamp is further influenced by the fact that the volume of the clamp is increased, the clamp occupies a limited machining space in the lathe, the space for machining the valve body is reduced, and the volume of the valve body can be machined is further influenced.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides a mechanical transmission mechanism capable of realizing multi-path independent power output by adopting only one power source, and a clamp applying the single-source multi-independent output mechanical transmission mechanism, so that the volume of a power system of the clamp is reduced, and the volume of a clampable valve body is maximized.

The aim of the invention is achieved by the following technical measures:

the utility model provides a many independent output of single source mechanical transmission structure, includes the power shaft, the cover is equipped with two at least power take off gears on the power shaft, its characterized in that: the power shaft is in transmission connection with any power output gear through a password transmission mechanism, the password transmission mechanism presents two torque connection states of on-off through whether password actions are triggered, the power shaft triggers the corresponding password transmission mechanism through different password actions to realize the output of torque to the corresponding power output gear, wherein,

the power shaft is provided with a sliding groove and at least one shaft shifting block;

the power output gear is provided with at least one gear clamping groove;

the password transmission mechanism comprises a first password disc, a second password disc and at least one sliding block, wherein a first clamping groove, a first master shifting block and a first slave shifting block are arranged on the first password disc, the first slave shifting block faces to the direction of the shaft shifting block and is matched with the position of the shaft shifting block, a second clamping groove and a second slave shifting block are arranged on the second password disc, and the second slave shifting block and the first master shifting block are positioned on the same circumferential radius and on the same vertical and axial cross section;

The sliding block is sleeved in the sliding groove through the ejection spring, the sliding block can be completely retracted into the sliding groove after the ejection spring is extruded by the sliding block, one shaft shifting block is matched with the first slave shifting block positions of one or two first password discs, the second password discs and the power output gears are sequentially sleeved at the positions of the power shaft mounting sliding block, and the sliding block can be ejected only when the gear clamping grooves of the power output gears, the first clamping grooves of the first password discs and the second clamping grooves of the second password discs are rotated to the sliding block positions;

the cipher action is determined by the rotation angle and sequence defined by the gear clamping slot position on one power output gear, the first clamping slot on the first cipher disk of the corresponding cipher transmission mechanism, the first master shifting block and the first slave shifting block, the second clamping slot and the second slave shifting block of the second cipher disk, and the physical position of the sliding block on the power shaft.

When the power shaft needs to transmit torque to a specific power output gear, the power shaft rotates in a specified angle, direction and sequence according to the password action corresponding to the power output gear, the first slave shifting block of the first password disk and the first master shifting block of the first password disk are shifted by the shaft shifting block to shift the second slave shifting block of the second password disk, so that the second clamping groove of the second password disk is overlapped with the gear clamping groove on the power output gear, then the shaft shifting block rotates reversely to continuously shift the first slave shifting block of the first password disk, so that the first clamping groove on the first password disk is overlapped with the second clamping groove of the second password disk and the gear clamping groove on the power output gear, and the sliding block can pop out and clamp the overlapped first clamping groove, second clamping groove and gear clamping groove at the moment, thereby realizing power transmission of the power shaft to the gear.

As a preferable scheme, the gear clamping groove is provided with a power groove side and an disengaging groove side, the power groove side is parallel to a radial ray passing through the axis of the power shaft, the disengaging groove side and the power groove side are arranged in an angle manner, one end of the sliding block extending out of the power shaft is provided with a double vertical surface section and an inclined surface section, two side surfaces of the double vertical surface section are arranged in parallel, a parallel section between the two side surfaces is positioned on the same plane with the axis of the power shaft, the inclined surface section is provided with a transmission side surface and a disengaging inclined surface, the transmission side surface is parallel to and matched with the power groove side of the gear clamping groove, and the disengaging inclined surface is parallel to and matched with the disengaging groove side; the included angle between the power groove side and the disengaging groove side is 30-60 degrees. The optimal choice of the included angle between the power slot edge and the disengaging slot edge is 45 degrees. The parallel section in the middle of the two side surfaces is in the same plane with the axis of the power shaft, so that the torque given to the first code disc and the second code disc by the two side surfaces of the sliding block in the rotation process of the power shaft is always perpendicular to the acting surface, and component forces in other directions can not be generated.

When the sliding block ejects the power shaft to be clamped into the gear clamping groove, the power shaft rotates from the disengaging inclined plane to the direction of the transmission side surface, the transmission side surface of the sliding block is tightly attached to the power groove edge of the gear clamping groove, the power output gear is pushed to rotate, and torque is output; when torque output needs to be released, the power shaft rotates reversely, namely, the power shaft rotates from the transmission side face to the direction of the disengagement inclined face, the disengagement inclined face of the sliding block is tightly attached to the side of the disengagement groove of the gear clamping groove, the sliding block is pushed to retract into the sliding groove, torque transmission is stopped, and power transmission between the power shaft and the power output gear is released. The gear clamping groove is provided with an edge of the gear clamping groove and an inclined surface of the sliding block, when the gear clamping groove is under stress, the gear clamping groove side can generate a component force pointing to the axis of the power shaft on the gear-disengaging inclined plane of the sliding block, and the component force can push the sliding block to the power shaft and enter the sliding groove. In contrast, when the transmission side surface of the sliding block is in torque contact with the power slot side of the gear clamping slot, the direction of the transmission side surface and the power slot side is perpendicular to the torque transmission direction, so that a component force towards the axis of the power shaft is not generated, and the power output gear is continuously pushed to rotate and output torque.

As a preferable scheme, two gear clamping grooves are formed in one power transmission gear, and the power groove sides and the gear disengaging groove sides of the two gear clamping grooves are opposite in arrangement direction. The two gear clamping grooves correspondingly rotate clockwise and rotate anticlockwise to output torque in two different directions, and the two gear clamping grooves are located at different positions, so that password actions formed by the two gear clamping grooves are different, and the respective actions of the two gear clamping grooves are not influenced.

When the power shaft rotates according to the password action, the password action corresponds to a password transmission mechanism and a gear clamping groove on a power transmission gear, the power shaft dials a first slave dial block of a first password disc through a shaft dial block, a first master dial block of the first password disc dials a second slave dial block of a second password disc, the first clamping groove of the first password disc, a second clamping groove of the second password disc and the gear clamping groove of the power output gear are overlapped, a sliding block ejects and clamps into the first clamping groove, the second clamping groove and the gear clamping groove, when the power shaft rotates from a disengagement inclined plane to a transmission side, the transmission side applies driving force to the side of the transmission gear power groove and drives the power output gear to rotate, when the power shaft rotates from the transmission side to the disengagement inclined plane, the disengagement inclined plane is pushed into a sliding groove of the gear clamping groove, the power output gear is released from the transmission of the power shaft, and the second clamping groove is further pushed to the second password disc to cause the first clamping groove, the second clamping groove and the gear clamping groove to be overlapped, and the power output gear clamping groove cannot be coincident again when the power shaft is not axially rotated, and the power output gear is not coincident again, and the power output shaft cannot be output from the first clamping groove to the transmission gear is not coincident.

As a preferable scheme, the chute on the power shaft is provided with a guide groove perpendicular to the chute, the slide block is provided with a guide column, the guide column is sleeved in the guide groove in a sliding manner, and the slide block can slide along the guide groove and the chute under the action of the ejector spring and the gear-disengaging groove side of the power output gear.

As a preferable scheme, the two power output gears are arranged oppositely, the password transmission mechanism connected with one power output gear is arranged oppositely to the password transmission mechanism of the other power output gear, the shaft shifting block is provided with two end parts which can be respectively contacted with the first password discs of the two password transmission mechanisms, and the password actions of the two password transmission mechanisms are different.

As a preferable scheme, three power output gears and three password transmission mechanisms are sleeved on the power shaft, the three power output gears are respectively matched with one password transmission mechanism, the password actions of the password transmission mechanisms are different, the three power output gears are respectively a first straight gear, a second straight gear and a third bevel gear, the three password transmission mechanisms are respectively a first password transmission mechanism, a second password transmission mechanism and a third password transmission mechanism, at least two shaft shifting blocks are positioned at different positions on the same periphery of the power shaft, the first straight gear is matched with the first password transmission mechanism and is matched with one shaft shifting block, the second straight gear is matched with the second password transmission mechanism, the third bevel gear is matched with the third password transmission mechanism, and the two shaft shifting blocks positioned on the same periphery of the power shaft are respectively matched with the second password transmission mechanism and the third password transmission mechanism.

The utility model provides a anchor clamps, includes anchor clamps base, presss from both sides tooth subassembly and centre gripping arm, the centre gripping arm is installed on the anchor clamps base, its characterized in that: the clamping tooth assembly comprises a main clamping tooth assembly and an auxiliary clamping tooth assembly, the main clamping tooth assembly is arranged at the far end of a clamping arm, the auxiliary clamping tooth assembly is arranged on the clamping arm between the main clamping tooth assembly and a clamp base, the main clamping tooth assembly is in transmission connection with a vertical clamping driving device and a rotary driving device, the auxiliary clamping tooth assembly is in transmission connection with an auxiliary vertical driving device, the clamp base is provided with the single-source multi-independent-output mechanical transmission structure, the single-source multi-independent-output mechanical transmission structure is provided with three power output gears, the three power output gears are respectively a first straight gear, a second straight gear and a third bevel gear, the first straight gear is in transmission connection with the rotary driving device, the second straight gear is in transmission connection with the auxiliary vertical driving device, and the third bevel gear is respectively in transmission connection with the vertical clamping driving device.

As a preferred scheme, the clamping arm comprises a first clamping arm and a second clamping arm, the first clamping arm and the second clamping arm are arranged in parallel, the vertical clamping driving device comprises two clamping arm thread seats, a bidirectional screw rod and a screw rod bevel gear, the screw rod bevel gear is sleeved at the middle part of the bidirectional screw rod and is connected with a third bevel gear in a transmission manner, the bidirectional screw rod is rotatably installed on the clamp base through a screw rod bearing, threads at two ends of the bidirectional screw rod are opposite in direction and are sleeved on the two clamping arm thread seats respectively, and the two clamping arm thread seats are slidably installed on the first clamping arm and the second clamping arm respectively. The single-source multi-independent output mechanical transmission structure is driven by a stepping motor or a servo motor, and the two clamping arms can be driven to move relatively through a third bevel gear, a screw bevel gear, a bidirectional screw and a clamping arm thread seat of the single-source multi-independent output mechanical transmission structure to clamp the valve body or loosen the valve body.

As a preferable scheme, the main clamping tooth assembly comprises a first main clamping assembly and a second main clamping assembly, wherein the first main clamping assembly is installed at the far end of a first clamping arm, the second main clamping assembly is rotatably installed at the far end of a second clamping arm through a thrust bearing, the first main clamping assembly and the second main clamping assembly are oppositely arranged, and the first main clamping assembly is in transmission connection with a rotary driving device; the rotary driving device comprises a rotary driving spline shaft, a first bevel gear, a second bevel gear, an intermediate driving gear, a rotary worm and a turbine, wherein the rotary worm is matched with the turbine in a transmission manner, the turbine is arranged on a first main clamping tooth assembly through a clamping tooth rotary shaft, the second bevel gear is arranged at one end of the rotary worm far away from the turbine, the first bevel gear is sleeved on the rotary driving spline shaft in a sliding manner, the first bevel gear is connected with the second bevel gear in a transmission manner, the intermediate driving gear is arranged at the other end of the rotary driving spline shaft, and the intermediate driving gear is connected with a first straight gear of a single-source multi-independent output mechanical transmission structure.

The single-source multi-independent-output mechanical transmission structure is driven by a stepping motor or a servo motor, namely, a spline shaft, a first bevel gear, a second bevel gear, a rotary worm and a turbine are driven to rotate through a first straight gear, the main clamping tooth assembly and the auxiliary clamping tooth assembly clamp a valve body to form a whole and rotate together, different end faces of the valve body are rotated to face a processing cutter, and a position sensor or a counter is arranged on the main clamping tooth assembly, the auxiliary clamping tooth assembly or other directly connected parts, so that the rotating angle and the position can be accurately judged, and accurate control is realized, so that the processing precision of the valve body is improved. The position sensor or the counter is a common control precision component and structure in the mechanical industry, and is not repeated.

As a preferred scheme, the auxiliary clamping tooth assembly comprises two auxiliary clamping tooth assemblies, the two auxiliary clamping tooth assemblies are oppositely arranged at the near ends of a first clamping arm and a second clamping arm, the auxiliary vertical driving device comprises an auxiliary clamping power worm, an auxiliary clamping power turbine, an intermediate turbine shaft, two fifth gears, two sixth gears, an auxiliary clamping driving spline shaft, a fifth bevel gear, a fourth bevel gear, a clamping worm and a clamping turbine, the clamping worm is in transmission fit with the clamping turbine, the fourth bevel gear is sleeved at one end of the clamping worm far away from the clamping turbine, the fifth bevel gear is slidably sleeved on the auxiliary clamping driving spline shaft and is in transmission connection with the fourth bevel gear, an auxiliary clamping thread seat in threaded fit with the clamping shaft is arranged on the clamping turbine and is in transmission connection with the clamping shaft through threads, the clamping turbine is mounted on an auxiliary clamping section of the clamping arm through a bearing, the auxiliary clamping power turbine is in transmission connection with the auxiliary clamping power turbine, the auxiliary clamping power turbine is in the middle of the intermediate turbine shaft, the two fifth gears are sleeved at two ends of the intermediate turbine shaft respectively and are in transmission connection with the two independent straight-tooth shafts, and the two auxiliary power turbine are in transmission connection with the two independent straight-tooth shafts respectively, and the two auxiliary power shafts are in transmission fit with the second straight-tooth shafts.

The single-source multi-independent-output mechanical transmission structure is driven by a stepping motor or a servo motor, and can drive two groups of auxiliary clamping transmission components to synchronously and relatively act through a second straight gear, a second auxiliary straight gear, an auxiliary clamping power worm, an auxiliary clamping power turbine, an intermediate turbine shaft, a fifth gear and a sixth gear, and drive a clamping plate to stretch and retract through a fifth bevel gear, a fourth bevel gear, a clamping worm, a clamping turbine, an auxiliary clamping screw seat and a clamping shaft, so that one end part of a valve body is clamped or loosened.

Due to the adoption of the technical scheme, compared with the prior art, the invention has the advantages that: the invention discloses a single-source multi-independent output mechanical transmission structure and a clamp applying the structure, wherein the single-source multi-independent output mechanical transmission structure is sleeved with a plurality of power output gears on a power shaft and is in transmission connection with different power output gears through a plurality of password transmission mechanisms, the output torque to any power output gear is realized through different password actions defined by the password transmission mechanisms, the structure is small, the positive and negative bidirectional output torque of any output end can be realized, the structure can be applied to any transmission system which needs multiple paths of output power and needs mutual noninterference, the application prospect is wide, the transmission structure is also used for the clamp, the clamp is used for clamping a three-way valve body to carry out accurate machining on a machine tool, the problem that the machining surface needs to be manually taken down for many times in the machining process of the three-way valve body is solved, and the rotation angle and the position can be accurately judged and accurately controlled through the combination of the transmission mechanism and a sensor or a counter, so that the machining precision of the valve body is improved. The rotary driving device in the application is driven by the stepping motor or the servo motor, the main clamping tooth assembly and the auxiliary clamping tooth assembly can rotate by any angle under the condition of clamping the valve body through the cooperation of the rotary driving device and the passive rotating assembly, the valve body can be accurately rotated to a machining position and an angle, each end face to be machined of the valve body can be sequentially rotated and machined under the condition that the clamping state of the valve body is not loosened, the problem that the valve body needs to be clamped repeatedly during machining of a plurality of sections is solved, and the machining efficiency is remarkably improved.

This application is equipped with two supplementary centre gripping subassemblies on the centre gripping arm, drives two through supplementary centre gripping drive assembly supplementary centre gripping subassembly synchronous relative motion to the third terminal surface of valve body is lived in the centre gripping, makes the valve body more stable in the course of working, avoids shifting and rocking, thereby further improves machining precision.

The invention is further described below with reference to the drawings and the detailed description.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment 1 of a single-source multiple-independent-output mechanical transmission structure according to the present invention.

Fig. 2 is a schematic perspective view of an embodiment 1 of a single-source multi-independent-output mechanical transmission structure according to the present invention.

Fig. 3 is a schematic diagram of an exploded structure of an embodiment 1 of a single-source multiple-independent-output mechanical transmission structure according to the present invention.

Fig. 4 is a schematic diagram of an exploded structure of the password transmission mechanism in embodiment 1 of a single-source multi-independent-output mechanical transmission structure according to the present invention.

FIG. 5 is a schematic view of an exploded view of another embodiment of the password transmission mechanism of embodiment 1 of a single-source multiple-independent-output mechanical transmission structure according to the present invention.

Fig. 6 is a schematic diagram of an exploded structure of the password transmission mechanism and the power take-off gear in embodiment 1 of a single-source multi-independent-output mechanical transmission structure according to the present invention.

Fig. 7 is a schematic structural diagram of a power shaft in an embodiment 1 of a single-source multiple-independent-output mechanical transmission structure according to the present invention.

Fig. 8 is a schematic structural diagram of a gear clamping groove on a third bevel gear in an embodiment 1 of a single-source multiple-independent-output mechanical transmission structure of the present invention.

Fig. 9 is a schematic view showing the structure of a jig according to embodiment 2 of the present invention.

Fig. 10 is a partially exploded view of embodiment 2 of the clamp of the present invention.

Fig. 11 is a schematic view showing a partial structure of a base portion of a jig according to embodiment 2 of the present invention.

Fig. 12 is a partial structural view of a clip according to another embodiment 2 of the present invention from another view with a clip base portion removed.

Fig. 13 is a partial schematic top view of a clip of embodiment 2 of the present invention with the clip base portion removed.

Fig. 14 is a schematic view of a vertical clamping driving device and related parts in embodiment 2 of the clamp according to the present invention.

Fig. 15 is a schematic view showing a structure of a rotary driving device according to embodiment 2 of the present invention.

Fig. 16 is a schematic view showing a related structure of a sub-vertical driving device and a part of a vertical clamping driving device in a clamp embodiment 2 of the present invention.

Detailed Description

Example 1: in this embodiment, a structure in which three groups of power can be output in forward and reverse directions is taken as an example for explanation, and according to the explanation of the present application, one-way or two-way power output groups and fewer or more power output groups can be realized. As shown in fig. 1 to 7, a single-source multi-independent output mechanical transmission structure comprises a power shaft 1, wherein a plurality of power output gears 3 are sleeved on the power shaft 1, the power shaft 1 and any power output gear 3 are respectively connected in a transmission manner through a password transmission mechanism 2, the password transmission mechanism 2 presents two torque connection states of on-off through whether password actions are triggered, and the power shaft 1 triggers the corresponding password transmission mechanism 2 through different password actions to realize the output of torque to the corresponding power output gears 3. The number of the power output gears 3 is at least two, and the number of the power output gears can be more, so long as the password transmission mechanism 2 corresponding to each power output gear 3 has different password actions, the independent torque output to any power output gear 3 can be realized. A power gear bearing 34 is sleeved on the periphery of any power output gear 3. In the present embodiment, three power output gears 3 and three password transmission mechanisms 2 are used as an example, but the transmission mechanism of the present application can be applied to a plurality of situations where power and torque need to be output separately, and is not limited to the embodiments described in the present application.

Referring to fig. 3 and 7, the power shaft 1 is provided with three sliding grooves 101, three shaft shifting blocks 102 and two mounting convex edges 104, and each sliding groove 101 is communicated with a guide groove 103 which is perpendicular to the side wall of the corresponding sliding groove 101. The mounting flange 104 is used for fixing the mounting positions of the power output gear 3 and the password transmission mechanism 2 in cooperation with structures such as a clamp, and is a conventional arrangement and is not repeated. The power gear bearing 34 is not shown in fig. 3.

Referring to fig. 3 to 6, the power take-off gear is provided with two gear clamping grooves 301. One gear clamping groove 301 can realize one-direction rotation driving, two gear clamping grooves 301 can enable the power output gear to realize positive and negative bidirectional output, and only different password actions are adopted to enable the two gear clamping grooves 301 to be respectively connected with the password transmission mechanism in a power mode.

Referring to fig. 3 to 7, a password transmission mechanism comprises a first password disc 201, a second password disc 202 and at least one sliding block 203, wherein the sliding block 203 is slidably installed in a chute 101 of a power shaft 1 through an ejection spring 204, guide posts 2033 are symmetrically arranged on two sides of the sliding block 203, the guide posts 2033 are slidably arranged in the guide grooves 103, the guide posts 2033 comprise two groups, the two groups of guide posts 2033 ensure that the sliding block 203 can accurately slide vertically up and down in the chute 101 without deflection and unsmooth sliding, and the sliding block 203 can completely retract into the chute 101 after extruding the ejection spring 204; the first cipher disk 201 is provided with a first clamping groove 2011, a first master shifting block 2012 and a first slave shifting block 2013, the first master shifting block 2012 and the first slave shifting block 2013 are respectively arranged on two side surfaces of the first cipher disk 201, and the first slave shifting block 2013 faces the direction of the shaft shifting block 102 and is matched with the shaft shifting block 102 in position; the second code disc 202 is provided with a second clamping groove 2021 and a second slave shifting block 2022, the second slave shifting block 2022 faces the first master shifting block 2012 and is arranged in a position matching mode, the first code disc 201, the second code disc 202 and the power output gear are sequentially sleeved at the position of the power shaft 1 where the sliding block 203 is arranged, and the sliding block 203 can be ejected only when the gear clamping groove 301 of the power output gear, the first clamping groove of the first code disc 201 and the second clamping groove 2021 of the second code disc 202 are rotated to the position of the sliding block 203. Specifically, the second slave dial 2022 and the first master dial 2012 are located on the same circumferential radius and on the same vertical cross section, so that the first master dial 2012 can contact the second slave dial 2022 and drive the second dial 202 to rotate during the rotation of the first dial 201.

The code action is determined by the rotation angle and sequence defined by the position of the gear card slot 301 on one power take-off gear, the first card slot 2011 on the first code wheel 201 of the corresponding code transmission mechanism, the first master dial 2012 and the first slave dial 2013, the second card slot 2021 and the second slave dial 2022 of the second code wheel 202, and the physical position of the slider 203 on the power shaft 1.

And (3) rotating and describing a password transmission mechanism: when the power shaft 1 rotates, the shaft shifting block 102 encounters the first slave shifting block 2013 of the first code wheel 201 and drives the first code wheel 201 to rotate, and the first master shifting block 2012 of the first code wheel 201 encounters the second slave shifting block 2022 of the second code wheel 202 and drives the second code wheel 202 to also rotate. However, only when the combination of the gear engagement groove 301 on the power take-off gear, the first engagement groove 2011 on the first code wheel 201, the first master 2012, the first slave 2013, the second engagement groove 2021 on the second code wheel 202, and the second slave 2022 is engaged, the gear engagement groove 301, the first engagement groove 2011, and the second engagement groove 2021 are engaged, so that the slider 203 can be engaged in the slide groove 101, and power and torque can be transmitted. If any of the above is not overlapped, the slider 203 cannot be engaged with the slide groove 101, and power is not transmitted to the power output gear.

Referring to fig. 4 to 6 and 8, the gear clamping groove 301 has a power groove side 3012 and an disengaging groove side 3011, the power groove side 3012 is parallel to a radial line passing through the axis of the power shaft 1, and the disengaging groove side 3011 is disposed at an angle to the power groove side 3012; one end of the sliding block 203 extending out of the power shaft 1 is provided with a double vertical surface section 2032 and an inclined surface section 2031, two side surfaces of the double vertical surface section 2032 are arranged in parallel, a parallel section between the two side surfaces is in the same plane with the axis of the power shaft 1, the inclined surface section 2031 is provided with a transmission side surface 2031a and an disengaging inclined surface 2031b, the transmission side surface 2031a is parallel to and matched with the power groove edge 3012 of the gear clamping groove 301, and the disengaging inclined surface 2031b is parallel to and matched with the disengaging groove edge 3011; the included angle between the power slot side 3012 and the disengagement slot side 3011 is between 30 ° and 60 °. The angle between the power slot edge 3012 and the disengagement slot edge 3011 is preferably 45 °.

When the power shaft 1 rotates from the power slot side 3012 to the disengaging slot side 3011, the disengaging inclined surface 2031b of the inclined surface section 2031 of the slider 203 receives a component force in the axial direction of the power shaft 1, so that the slider 203 is pushed out by the disengaging slot side of the power output gear to slide along the guide slot 103 and the chute 101, and returns into the chute 101, thereby breaking torque conduction, and the power transmission gear no longer transmits power.

Referring to fig. 3, 6 and 8, two gear clamping grooves 301 are formed in one power transmission gear, and power groove sides 3012 and disengaging groove sides 3011 of the two gear clamping grooves 301 are opposite in arrangement direction. The two gear clamping grooves 301 correspondingly rotate clockwise and anticlockwise to output torque in two different directions, and similarly, the two gear clamping grooves 301 are positioned at different positions of the inner ring of the power transmission gear, so that the password actions formed by the two gear clamping grooves 301 correspondingly are different, and the respective actions of the two gear clamping grooves 301 are not influenced.

In this embodiment, in order to simplify the structure and reduce the structural length and volume, a more simplified installation structure may be adopted, referring to fig. 1 to 3 and fig. 7, two power output gears are oppositely disposed at the end of the power shaft 1, the password transmission mechanism connected with one power output gear is oppositely disposed with the password transmission mechanism of the other power output gear, two shaft shifting blocks 102 are located at different positions on the same periphery of the power shaft 1 and can be respectively contacted with the first password discs 201 of the two password transmission mechanisms, and the password actions of the two password transmission mechanisms are different. The two power take-off gears in the middle of the power shaft 1 can also be used in this way to achieve the purpose of further compressing the length of the structure.

Referring to fig. 1 to 3 and fig. 7, in this embodiment, three power output gears and three password transmission mechanisms are sleeved on a power shaft 1, the three power output gears are respectively matched with one password transmission mechanism and the password actions of the password transmission mechanisms are different, the three power output gears are respectively a first straight gear 31, a second straight gear 32 and a third bevel gear 33, the three password transmission mechanisms are respectively a first password transmission mechanism 21, a second password transmission mechanism 22 and a third password transmission mechanism 23, three shaft shifting blocks 102 are arranged on the power shaft 1, the two shaft shifting blocks 102 are located at different positions on the same periphery of the power shaft 1 and respectively correspond to the second password transmission mechanism 22 and the third password transmission mechanism 23, the first straight gear 31 is matched with the first password transmission mechanism 21 and is matched with the shaft shifting block 102, the second straight gear 32 is matched with the second password transmission mechanism 22, the other shaft shifting block 102 is corresponding to the first password transmission mechanism 21, and the third bevel gear 33 is matched with the third password transmission mechanism 23.

Description of structural principle: the power shaft 1 drives any shaft shifting block to rotate, the shaft shifting block touches the first slave shifting block 2013 of the first code disc 201 and drives the first code disc 201 to rotate, the first master shifting block 2012 of the first code disc 201 touches the second slave shifting block 2022 of the second code disc 202 and drives the second code disc 202 to rotate, the second clamping groove 2021 of the second code disc 202 is positioned at a position overlapped with the gear clamping groove 301 on the power output gear 3, then the power shaft 1 reversely rotates, the first code disc 201 is continuously driven to rotate to a position overlapped with the second clamping groove 2021 of the second code disc 202 and the gear clamping groove 301 on the power output gear through the shaft shifting block and the first slave shifting block 2013, then the power shaft 1 is reversely rotated again to enable the sliding block 203 to be sprung into the overlapped gear clamping groove 301, the first clamping groove 2011 and the second clamping groove 2021, and power and torque transmission of the power output gear rotating from the gear-withdrawing side 3011 of the sliding block 203 to the power groove side 3012 are realized. When the power output needs to be stopped and the torque output is released, the power shaft 1 rotates reversely, namely, the power groove side 3012 rotates towards the disengaging groove side 3011, so that the sliding block 203 can be pushed into the sliding groove 101 again through the acting force of the disengaging inclined surface 2031b of the sliding block 203 and the disengaging groove side 3011, and the torque and the power output are released; and as the power shaft 1 continues to rotate, the password transmission mechanism 2 is out of engagement, the power and torque transmission can be restored again only when the power shaft 1 re-executes the above-mentioned actions for the password transmission mechanism 2, and similarly, only the password actions formed by the gear clamping groove 301 and the password transmission mechanism 2 for the reverse direction need to be executed for the reverse direction rotation and torque output of the power output gear 3.

Only when the combination of the gear clamping groove 301 on the power output gear, the first clamping groove 2011 on the first code wheel 201, the first master dial 2012, the first slave dial 2013, the second clamping groove 2021 on the second code wheel 202 and the second slave dial 2022 are matched, the gear clamping groove 301, the first clamping groove 2011 and the second clamping groove 2021 are overlapped, the sliding block 203 can pop up the sliding groove 101 and clamp into the clamping groove, and power and torque can be transmitted. When the password operation is not performed, the above structures are disordered and the positions are not overlapped, so that the sliding block 203 cannot be clamped into the clamping groove, and power is not transmitted to the power output gear.

Example 2: referring to fig. 9 to 16, in this embodiment, a clamp is disclosed for clamping a three-way valve body for machining three end faces, and includes a clamp base 4, a clamp tooth assembly 5 and a clamp arm 6, the clamp arm 6 is mounted on the clamp base 4, the clamp tooth assembly 5 includes a main clamp tooth assembly 51 and a sub-clamp tooth assembly 52, the main clamp tooth assembly 51 is mounted at the distal end of the clamp arm 6, that is, at the end of the clamp arm 6 away from the clamp base 4, the sub-clamp tooth assembly 52 is mounted on the clamp arm 6 between the main clamp tooth assembly 51 and the clamp base 4, the main clamp tooth assembly 51 is in transmission connection with a vertical clamping driving device and a rotary driving device, the sub-clamp tooth assembly 52 is in transmission connection with a sub-vertical driving device, the single-source multi-independent output mechanical transmission structure described in embodiment 1 is provided on the clamp base 4, the single-source multi-independent output mechanical transmission structure has three power output gears, the three power output gears are a first straight gear 31, a second straight gear 32 and a third bevel gear 33, the first straight gear 31 is in transmission connection with the sub-vertical driving device, and the third bevel gear 33 is in transmission connection with the vertical driving device.

Referring to fig. 9 to 14 and 16, the clamping arm 6 includes a first clamping arm 61 and a second clamping arm 62, the first clamping arm 61 and the second clamping arm 62 are disposed in parallel, the vertical clamping driving device includes two clamping arm screw bases, a bidirectional screw 63 and a screw bevel gear 64, the two clamping arm screw bases are respectively mounted on the two clamping arm screw base sliding blocks 42, a slideway 41 matched with the clamping arm screw base sliding blocks 42 is disposed on the clamp base 4, the two clamping arm screw base sliding blocks 42 are slidably connected with the clamp base 4 through the slideway 41, the screw bevel gear 64 is sleeved on the middle part of the bidirectional screw 63 and is in transmission connection with the third bevel gear 33, the middle part of the bidirectional screw 63 and the screw bevel gear 64 are rotatably mounted on the clamp base 4 through screw bearings, and the two clamping arm screw bases are respectively sleeved on the first clamping arm 61 and the second clamping arm 62 through bearings. The single-source multi-independent output mechanical transmission structure is driven by a stepping motor or a servo motor, namely the two clamping arms 6 can be driven to move relatively through the third bevel gear 33, the screw bevel gear 64, the bidirectional screw 63 and the clamping arm thread seat of the single-source multi-independent output mechanical transmission structure, and the valve body is clamped or loosened through the main clamping gear assembly 51.

Referring to fig. 9 to 14, the main clamping tooth assembly 51 includes a first main clamping assembly 511 and a second main clamping assembly 512, the first main clamping assembly 511 is mounted at the distal end of the first clamping arm 61, the second main clamping assembly 512 is rotatably mounted at the distal end of the second clamping arm 62 through a thrust bearing, the first main clamping assembly 511 and the second main clamping assembly 512 are oppositely arranged, and the first main clamping assembly 511 is in transmission connection with a rotation driving device; the rotary driving device comprises a rotary driving spline shaft 71, a first bevel gear 72, a second bevel gear 73, an intermediate driving gear 76, a rotary worm 74 and a turbine 75, wherein the rotary worm 74 is in transmission fit with the turbine 75, the turbine 75 is arranged on a first main clamping assembly 511 through a clamping rotating shaft 70, the second bevel gear 73 is arranged at one end of the rotary worm 74 far away from the turbine 75, the first bevel gear 72 is slidably sleeved on the rotary driving spline shaft 71, the first bevel gear 72 is in transmission connection with the second bevel gear 73, the intermediate driving gear 76 is arranged at the other end of the rotary driving spline shaft 71, and the intermediate driving gear 76 is in transmission connection with a first straight gear 31 of a single-source multi-independent output mechanical transmission structure through the main clamping intermediate driving assembly. The main intermediate drive assembly comprises a first main drive worm 310, a first main drive worm gear 311, a second main drive intermediate shaft 77, a second main drive worm gear 79 and a second main drive gear 78, wherein the second main drive gear 78 is sleeved at one end of the second main drive intermediate shaft 77 and is in transmission connection with the intermediate drive gear 76, the second main drive worm gear 79 is sleeved at the middle part of the second main drive intermediate shaft 77 and is in transmission connection with the first main drive worm 310, one end of the first main drive worm 310 is sleeved with the first main drive worm gear 311, and the first main drive worm gear 311 is in transmission connection with the first straight gear 31.

The single-source multi-independent-output mechanical transmission structure is driven by a stepping motor or a servo motor, namely, the first main clamping tooth middle driving assembly, the middle driving gear 76, the rotary driving spline shaft 71, the first bevel gear 72, the second bevel gear 73, the rotary worm 74 and the turbine 75 can be used for driving the first main clamping assembly 511 to rotate, the first main clamping assembly 511 and the second main clamping assembly 512 clamp the valve body to form a whole, the first main clamping assembly 511, the second main clamping assembly 512 and the valve body clamped in the middle can also rotate together, different end faces of the valve body are enabled to rotate to face towards a processing cutter, and the rotary angle and the position can be accurately judged and the accurate control can be realized through position sensors or counters arranged on the main clamping tooth assembly, the auxiliary clamping tooth assembly or other directly connected components, so that the processing precision of the valve body is improved. The position sensor or the counter is a common control precision component and structure in the mechanical industry, and is not repeated.

Referring to fig. 9 to 14 and 16, the auxiliary clamping tooth assembly 52 includes two auxiliary clamping tooth assemblies, which are disposed at the proximal ends of the first clamping arm 61 and the second clamping arm 62, that is, between the main clamping tooth assembly 51 and the clamp base 4, and include an auxiliary clamping plate 521, a clamping shaft 522 and a clamping turbine 523, the auxiliary clamping plate 521 is mounted on the clamping shaft 522, the clamping turbine 523 has a threaded hole at the center thereof, and the clamping shaft 522 is provided with threads and is in threaded fit with the threaded hole of the clamping turbine 523, and the clamping turbine 523 is mounted on the clamping arm 6 through a bearing.

Referring to fig. 9 to 15, the auxiliary vertical driving device includes an auxiliary clamping driving spline shaft 86, a fifth bevel gear 87, a fourth bevel gear 88, a clamping worm 89, an intermediate turbine shaft 83, two fifth gears 84, two sixth gears 85, an auxiliary clamping power worm 81 and an auxiliary clamping power turbine 82, the clamping worm 89 is in transmission fit with the clamping turbine 523, the fourth bevel gear 88 is sleeved at one end of the clamping worm 89 far away from the clamping turbine 523, the fifth bevel gear 87 is slidably sleeved on the auxiliary clamping driving spline shaft 86 and in transmission connection with the fourth bevel gear 88, the sixth gears 85 are fixedly mounted at one end of the auxiliary clamping driving spline shaft 86 opposite to each other, the two fifth gears 84 are respectively sleeved at two ends of the intermediate turbine shaft 83 and in transmission connection with the two sixth gears 85, the auxiliary clamping power worm 82 is sleeved at the middle of the intermediate turbine shaft 83, the auxiliary clamping power worm 81 is matched with the auxiliary clamping power worm 82 and in transmission connection, the auxiliary clamping power worm 81 is sleeved with the second spur gear 80, and the second spur gear 80 is in transmission connection with the second spur gear 32 of the single-source multiple independent output mechanical transmission structure.

The single-source multi-independent-output mechanical transmission structure is driven by a stepping motor or a servo motor, namely two groups of auxiliary clamping transmission components can be driven to synchronously and oppositely act through a power shaft 1, a second spur gear 32, a second auxiliary spur gear 80, an auxiliary clamping power worm 81, an auxiliary clamping power turbine 82, an intermediate turbine shaft 83, a fifth gear 84 and a sixth gear 85, and an auxiliary clamping plate 521 is driven to stretch and retract through a fifth bevel gear 87, a fourth bevel gear 88, a clamping worm 89, a clamping turbine 523 and a clamping shaft 522, so that one end part of a valve body at the inner side of a clamp is clamped or loosened.

The working principle of the clamp is as follows: the clamp is arranged on a numerical control machine tool through a clamp base 4, a valve is firstly arranged on a main clamping tooth assembly 51, a single-source multi-independent output mechanical transmission structure is driven by a servo motor to output power to a vertical clamping driving device, the vertical clamping driving device drives a clamping arm 6 and the main clamping tooth assembly 51 to clamp a three-way valve body, at the moment, a T-shaped middle valve port of the three-way valve body faces towards a machining tool of the numerical control machine tool, machining of the valve port end face is carried out, after machining is finished, a rotary driving device drives the main clamping tooth assembly 51 and the valve body to rotate by 90 degrees, an unprocessed valve port end face faces towards a machining tool of the numerical control machine tool, at the moment, a secondary vertical driving device acts to drive a secondary clamping tooth assembly 52 to clamp the other valve port end which is clamped and turned into, at the moment, the secondary clamping tooth assembly 52 is driven to clamp a valve port end face, and the main clamping tooth assembly 51 clamps a main body part of the three-way valve body, stable clamping can be ensured even though two ends of the three-way valve body are long, shaking can not occur when machining of the valve port end face is finished, the secondary clamping tooth assembly 52 is loosened, the rotary driving device drives the main clamping tooth assembly 51 and the valve body to rotate by 180 degrees reversely, the end face towards the machining tool and the secondary clamping end face faces towards the machined end face, and the valve body is clamped between the final end faces and clamped by the secondary clamping tooth assembly 52. The whole course of above-mentioned course of working only needs to move the three-way valve body once, and to large-scale three-way valve body, every piece has tens kilograms to last hundred kilograms weight, and each time moves and all takes very much physical effort and manual work, and this application thoroughly has solved above-mentioned problem, especially, the centre gripping of traditional three-way valve body only grasps valve body main part, can appear the problem that the centre gripping stability is poor, the valve body rocked when processing to valve body both ends valve mouth, and this application adopts vice clamp tooth subassembly 52 centre gripping longer tip, makes the valve body can stable processing, and then has improved the machining precision of terminal surface. The method can process a single valve body, is not limited to a three-way valve body, and can process a four-way valve body and other valve bodies with a plurality of end faces needing to be processed.

Claims

1. The utility model provides a many independent output of single source mechanical transmission structure, includes the power shaft, the cover is equipped with two at least power take off gears on the power shaft, its characterized in that: the power shaft is in transmission connection with any power output gear through a password transmission mechanism, the password transmission mechanism presents two torque connection states of on-off through whether password actions are triggered, the power shaft triggers the corresponding password transmission mechanism through different password actions to realize the output of torque to the corresponding power output gear, wherein,

the power output gear is provided with at least one gear clamping groove;

2. The single-source multiple-independent-output mechanical transmission structure according to claim 1, wherein:

the gear clamping groove is provided with a power groove edge and a gear disengaging groove edge, the power groove edge is parallel to a radial ray passing through the axis of the power shaft, the gear disengaging groove edge and the power groove edge are arranged in an angle mode, one end of the sliding block, which extends out of the power shaft, is provided with a double vertical surface section and an inclined surface section, two side surfaces of the double vertical surface section are arranged in parallel, a parallel section in the middle of the two side surfaces is positioned on the same plane with the axis of the power shaft, the inclined surface section is provided with a transmission side surface and a gear disengaging inclined surface, the transmission side surface is parallel to and matched with the power groove edge of the gear clamping groove, and the gear disengaging inclined surface is parallel to and matched with the gear disengaging groove edge; the included angle between the power groove side and the disengaging groove side is 30-60 degrees.

3. The single-source multiple-independent-output mechanical transmission structure according to claim 2, wherein:

two gear clamping grooves are formed in one power transmission gear, and the power groove sides and the gear disengaging groove sides of the two gear clamping grooves are opposite in arrangement direction.

4. The single-source multiple-independent-output mechanical transmission structure according to claim 1, wherein:

the sliding groove on the power shaft is provided with a guide groove perpendicular to the sliding groove, the sliding block is provided with a guide post, the guide post is sleeved in the guide groove in a sliding manner, and the sliding block can slide along the guide groove and the sliding groove under the action of the ejection spring and the gear-disengaging groove side of the power output gear.

5. The single-source multiple-independent-output mechanical transmission structure according to claim 1, wherein:

the two power output gears are oppositely arranged, the password transmission mechanism connected with one power output gear is oppositely arranged with the password transmission mechanism of the other power output gear, the shaft shifting block is provided with two end parts which can be respectively contacted with the first password discs of the two password transmission mechanisms, and the password actions of the two password transmission mechanisms are different.

6. The single-source multiple-independent-output mechanical transmission structure according to claim 1, wherein:

The three power output gears are respectively a first straight gear, a second straight gear and a third bevel gear, the three power output gears are respectively a first password transmission mechanism, a second password transmission mechanism and a third password transmission mechanism, at least two shaft shifting blocks are positioned at different positions on the same periphery of the power shaft, the first straight gear is matched with the first password transmission mechanism and is matched with one shaft shifting block, the second straight gear is matched with the second password transmission mechanism, the third bevel gear is matched with the third password transmission mechanism, and the two shaft shifting blocks positioned on the same periphery of the power shaft are respectively matched with the second password transmission mechanism and the third password transmission mechanism.

7. The utility model provides a anchor clamps, includes anchor clamps base, presss from both sides tooth subassembly and centre gripping arm, the centre gripping arm is installed on the anchor clamps base, its characterized in that: the clamping tooth assembly comprises a main clamping tooth assembly and an auxiliary clamping tooth assembly, the main clamping tooth assembly is arranged at the far end of a clamping arm, the auxiliary clamping tooth assembly is arranged on the clamping arm between the main clamping tooth assembly and a clamp base, the main clamping tooth assembly is in transmission connection with a vertical clamping driving device and a rotary driving device, the auxiliary clamping tooth assembly is in transmission connection with an auxiliary vertical driving device, the clamp base is provided with a single-source multi-independent-output mechanical transmission structure according to any one of claims 1 to 6, the single-source multi-independent-output mechanical transmission structure is provided with three power output gears, the three power output gears are respectively a first straight gear, a second straight gear and a third taper gear, the first straight gear is in transmission connection with the rotary driving device, the second straight gear is in transmission connection with the auxiliary vertical driving device, and the third taper gear is respectively in transmission connection with the vertical clamping driving device.

8. A clamp as defined in claim 7, wherein:

the clamping arms comprise a first clamping arm and a second clamping arm, the first clamping arm and the second clamping arm are arranged in parallel, the vertical clamping driving device comprises two clamping arm thread seats, a bidirectional screw rod and a screw bevel gear, the screw bevel gear is sleeved at the middle part of the bidirectional screw rod and is in transmission connection with a third bevel gear, the bidirectional screw rod is rotatably installed on the clamp base through a screw rod bearing, the two ends of the bidirectional screw rod are opposite in thread direction and are respectively sleeved on the two clamping arm thread seats, and the two clamping arm thread seats are respectively slidably installed on the first clamping arm and the second clamping arm.

9. A clamp as defined in claim 8, wherein:

the main clamping tooth assembly comprises a first main clamping assembly and a second main clamping assembly, the first main clamping assembly is arranged at the far end of a first clamping arm, the second main clamping assembly is rotatably arranged at the far end of a second clamping arm through a thrust bearing, the first main clamping assembly and the second main clamping assembly are oppositely arranged, and the first main clamping assembly is in transmission connection with the rotary driving device; the rotary driving device comprises a rotary driving spline shaft, a first bevel gear, a second bevel gear, an intermediate driving gear, a rotary worm and a turbine, wherein the rotary worm is matched with the turbine in a transmission manner, the turbine is arranged on a first main clamping tooth assembly through a clamping tooth rotary shaft, the second bevel gear is arranged at one end of the rotary worm far away from the turbine, the first bevel gear is sleeved on the rotary driving spline shaft in a sliding manner, the first bevel gear is connected with the second bevel gear in a transmission manner, the intermediate driving gear is arranged at the other end of the rotary driving spline shaft, and the intermediate driving gear is connected with a first straight gear of a single-source multi-independent output mechanical transmission structure.

10. A clamp as defined in claim 8, wherein:

the auxiliary clamping tooth assembly comprises two auxiliary clamping tooth assemblies, the two auxiliary clamping tooth assemblies are oppositely arranged at the near ends of a first clamping arm and a second clamping arm, the auxiliary vertical driving device comprises an auxiliary clamping power worm, an auxiliary clamping power turbine, an intermediate turbine shaft, two fifth gears, two sixth gears, an auxiliary clamping driving spline shaft, a fifth bevel gear, a fourth bevel gear, a clamping worm and a clamping turbine, the clamping worm is in transmission fit with the clamping turbine, the fourth bevel gear is sleeved at one end of the clamping worm far away from the clamping turbine, the fifth bevel gear is slidably sleeved on an auxiliary clamping driving spline shaft and is in transmission connection with the fourth bevel gear, an auxiliary clamping thread seat in threaded fit with the clamping shaft is arranged on the clamping turbine and is in transmission connection with the clamping shaft through threads, the clamping turbine is mounted on an auxiliary clamping section of the clamping arm through a bearing, the auxiliary clamping power worm is in fit and transmission connection with the auxiliary clamping power turbine, the auxiliary clamping power turbine is sleeved at the middle of the intermediate turbine shaft, the two fifth gears are respectively sleeved at two ends of the intermediate turbine shaft and are respectively connected with the six gears in transmission connection with the sixth gears, the auxiliary clamping power turbine is sleeved at one end of the auxiliary clamping power turbine, and the auxiliary clamping power turbine is in transmission connection with the second straight-line is provided with the second gear, and the auxiliary clamping power turbine is in transmission connection with the straight-line.