CN116060708A - High-precision ball nut thread groove grinding mechanism - Google Patents
High-precision ball nut thread groove grinding mechanism Download PDFInfo
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- CN116060708A CN116060708A CN202310279971.3A CN202310279971A CN116060708A CN 116060708 A CN116060708 A CN 116060708A CN 202310279971 A CN202310279971 A CN 202310279971A CN 116060708 A CN116060708 A CN 116060708A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 27
- 230000003068 static effect Effects 0.000 claims abstract description 83
- 230000005540 biological transmission Effects 0.000 claims abstract description 34
- 230000006835 compression Effects 0.000 claims abstract description 17
- 238000007906 compression Methods 0.000 claims abstract description 17
- 238000002347 injection Methods 0.000 claims description 31
- 239000007924 injection Substances 0.000 claims description 31
- 239000012530 fluid Substances 0.000 claims description 24
- 210000001503 joint Anatomy 0.000 claims description 18
- 238000009434 installation Methods 0.000 claims description 12
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 239000007788 liquid Substances 0.000 description 14
- 238000001816 cooling Methods 0.000 description 4
- 229910001651 emery Inorganic materials 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/36—Thread cutting; Automatic machines specially designed therefor by grinding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B45/00—Means for securing grinding wheels on rotary arbors
- B24B45/003—Accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention discloses a high-precision ball nut thread groove grinding mechanism, which comprises: the grinding rod assembly is internally provided with a transmission flexible shaft, the shaft body assembly is arranged in the transmission flexible shaft end face, the side wall surface of the shaft body assembly is in clamping connection with the gap of the inner wall surface of the shaft sleeve assembly, the side wall of the shaft sleeve assembly is provided with a grinding wheel, and the side wall surface of the grinding wheel is in contact with the side wall surface of the compression nut. According to the high-precision ball nut thread groove grinding mechanism, the grinding wheel which is positioned in the ball groove in the ball nut body and moves in the ball groove is moved through the transmission flexible shaft, so that the spiral lead angle of the ball groove thread lead in the ball nut body is equal to the angle theta of the grinding wheel at the output end of the transmission flexible shaft and the angle theta of the elbow grinding rod at the output end of the positioning plate, the rotation axes of the static pressure shaft body, the static pressure shaft sleeve and the grinding wheel are kept consistent with the spiral lead angle of the ball nut body thread lead, and the adjustment times and the adjustment time of the rotation shaft angle of the grinding wheel are reduced.
Description
Technical Field
The invention relates to the technical field of ball screw production, in particular to a high-precision ball nut thread groove grinding mechanism.
Background
The ball screw pair is used as an important actuating mechanism in a servo feed driving system, has the characteristics of high transmission efficiency, sensitive follow-up, zero clearance, stable transmission and the like, always occupies most markets in the application field of linear motion, is extremely widely applied to the fields of numerical control machine tools, precision machinery, high-precision measuring instruments, automatic production lines and the like, is a medium-lead and small-lead ball screw pair in the market, and has higher precision and higher speed than the trapezoidal screw pair with the same specification, but the demand of a large-lead ball nut assembly is increased along with the increase of the use of a high-speed feed mechanism. The big helical pitch ball screw pair has more advantage than general ball screw, but the helical pitch of ball nut subassembly increases for the corresponding increase of the spiral angle of ball nut subassembly also, when using traditional method processing nut, the mill pole probably bumps with the inner wall of ball nut subassembly, leads to the unable processing of ball nut subassembly, has some defects, just like:
the groove of the ball nut component adopts a God type double arc with a normal phase section, the section arc of the grinding wheel is trimmed through a formed diamond roller in the existing grinding process, so that the angle of a rotating shaft of the grinding wheel needs to be adjusted corresponding to the axis of the ball nut component, a helix angle is formed to grind the ball nut component, the angle adjustment time and times are prolonged, when the ball nut component with a large lead is ground, the lead of the ball nut component is increased, the helix angle of the nut is increased at the same time, and a grinding rod of the grinding wheel collides with the inner wall of the ball nut component during grinding, so that normal grinding cannot be performed.
Aiming at the problems, innovative design is urgently needed on the basis of original ball nut assembly grinding equipment.
Disclosure of Invention
The invention aims to provide a high-precision ball nut thread groove grinding mechanism, which aims to solve the problems that in the background technology, the angle of a grinding wheel rotating shaft needs to be adjusted corresponding to the axis of a ball nut assembly, a spiral angle is formed to grind the ball nut assembly, the angle adjustment time and the times are prolonged, and when a large-lead ball nut assembly is ground, a grinding wheel grinding rod is collided with the inner wall of the ball nut assembly and cannot be ground.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a high accuracy ball nut screw thread slot grinding mechanism, includes the grinding rod subassembly, its inside is provided with the transmission flexible axle, the internally mounted of transmission flexible axle terminal surface has the axis body subassembly, and axis body subassembly lateral wall face and axle sleeve subassembly internal wall face clearance are the block connection, axle sleeve subassembly lateral wall is provided with the emery wheel, and emery wheel lateral wall face and compression nut lateral wall face contact, the inside quilt body subassembly of compression nut runs through, and the compression nut runs through the ball nut subassembly inside, the one end butt joint of grinding rod subassembly and switching subassembly, the rotation axis of compression nut and emery wheel is unanimous, and the rotation axis angle of emery wheel and axis body subassembly is unanimous with the screw lead's of ball nut subassembly spiral lift angle;
the grinding rod assembly includes: the positioning plate and the elbow grinding rod form a block structure with a T-shaped cross section, and the upper end of the positioning plate is provided with a groove connected with the switching assembly in a clamping way;
the ball nut assembly includes: ball nut body, raceway and deflector, and ball nut body is run through by elbow grinding rod, and ball nut body inner wall is the spiral and is provided with the raceway, and the raceway inner wall is provided with the deflector
By adopting the technical scheme, the processing and grinding operation of ball nut thread channels with different leads can be conveniently carried out.
Preferably, the side wall surface of the positioning plate is provided with a groove in butt joint with the output end of the motor, and the side wall groove of the positioning plate is communicated with the mounting hole and one end of the fluid flow channel.
By adopting the technical scheme, the positioning plate is convenient to provide an installation space for the motor working port, and the positioning plate is matched with the rotating flexible shaft to perform rotary grinding operation.
Preferably, the mounting hole and the flexible shaft steering hole form an arc tube hole, and a transmission flexible shaft is arranged in the mounting hole and the flexible shaft steering hole.
By adopting the technical scheme, the installation hole and the flexible shaft steering hole are convenient to form a steering arc-shaped pipeline structure, and the transmission hose is convenient to provide auxiliary installation when in use.
Preferably, the inside of the elbow grinding rod is penetrated by the mounting hole, the flexible shaft steering hole and the fluid flow passage, and the fluid flow passage is in butt joint with the side wall of the injection hole.
By adopting the technical scheme, the elbow grinding rod is convenient to work and use by matching different helix angles with the flexible shaft steering hole for the mounting hole.
Preferably, the shaft body assembly comprises a static pressure shaft body arranged in the end face of the elbow grinding rod, an injection hole penetrating through the static pressure shaft body is formed in the static pressure shaft body, and output holes are symmetrically formed in one end of the static pressure shaft body.
By adopting the technical scheme, the static pressure shaft body is matched with the elbow grinding rod to work and use in cooperation with the angle adjustment.
Preferably, the outer wall surface of the static pressure shaft body is provided with a strip-shaped groove communicated with the output hole in an included angle, and one end of the static pressure shaft body, which is provided with the strip-shaped groove, is sleeved with the shaft sleeve assembly.
By adopting the technical scheme, the hydrostatic shaft body is used by adjusting the machining angle according to the machining grinding angle.
Preferably, the shaft sleeve assembly comprises a static pressure shaft sleeve connected with one end of the static pressure shaft body, the static pressure shaft sleeve is aligned with the shaft center of the static pressure shaft body, and the inner wall of the static pressure shaft sleeve is in butt joint with the end face of one side of the output hole.
By adopting the technical scheme, the cooperation operation between the static pressure shaft sleeve and the static pressure shaft body is convenient.
Preferably, the annular grooves are formed in the output end of the static pressure shaft sleeve at equal intervals, and the diameter of one end of the static pressure shaft body sleeved with the static pressure shaft sleeve is smaller than that of the other end of the static pressure shaft body.
By adopting the technical scheme, compressed gas or compressed liquid entering the static pressure shaft sleeve is convenient to fill into a gap between the static pressure shaft body and the static pressure shaft sleeve.
Preferably, the switching assembly comprises a quick connector and an injection pipe, the quick connector is in butt joint with the groove at the upper end of the positioning plate, and the quick connector is communicated with the inner pipeline of the injection pipe.
By adopting the technical scheme, the quick connector and the injection pipe are matched to reduce the diameter of the flow path, so that compressed gas or compressed liquid can be conveniently input into the fluid flow channel.
Preferably, the bottom output end of the injection pipe is in butt joint with the top end port of the fluid flow channel, and the fluid flow channel and the injection hole are communicated with the inner pipeline of the injection pipe.
By adopting the technical scheme, the corresponding compressed gas or compressed liquid can be conveniently and rapidly injected through the injection pipe.
Compared with the prior art, the invention has the beneficial effects that: the high-precision ball nut thread groove grinding mechanism comprises:
1. when the device is used, the grinding wheel moving in the rollaway nest in the ball nut body moves through the transmission flexible shaft, so that the spiral lead angle of the rollaway nest thread lead in the ball nut body is equal to the spiral lead angle of the grinding wheel at the output end of the transmission flexible shaft and the angle theta of the elbow grinding rod at the output end of the positioning plate, the rotation axes of the static pressure shaft body, the static pressure shaft sleeve and the grinding wheel are kept consistent with the spiral lead angle of the rollaway nest thread lead in the ball nut body, and the adjustment times and the adjustment time of the rotation axis angle of the grinding wheel are reduced;
2. the installation hole and the flexible shaft steering hole in the positioning plate in the device are used for guiding the transmission flexible shaft, and the transmission flexible shaft is used for transmitting power to the grinding wheel, so that the grinding rod cannot collide with the inner wall of the ball nut assembly when the grinding wheel grinds the groove of the ball nut assembly, and the angle theta in the grinding operation of the thread groove of the ball nut assembly can be adjusted according to the lead spiral angle of the ball nut assembly with different specifications;
3. the direction of transmission power of the transmission flexible shaft is changed according to the theta angle of the elbow grinding rod through the transmission flexible shaft in the device, so that the rotating shaft of the grinding wheel is always kept in a parallel state with the helix angle of the thread lead of the ball nut assembly, and the collision condition of the grinding rod and the inner wall of the ball nut assembly can not occur when the device grinds multiple lead and large lead ball nut assembly thread channels.
Drawings
FIG. 1 is a schematic view of the overall three-dimensional exploded structure of the present invention;
FIG. 2 is a schematic diagram of the overall internal front view of the present invention;
FIG. 3 is a schematic illustration of the side view of the view A-A' of FIG. 2 in accordance with the present invention;
FIG. 4 is a schematic view of the internal anatomic top view of the ball nut assembly of the present invention;
FIG. 5 is a schematic side view of the fluid flow path and adapter assembly of the present invention in use;
FIG. 6 is a schematic side elevational view of the bushing assembly and grinding wheel assembly of the present invention;
FIG. 7 is a schematic view of a disassembled perspective structure of a shaft assembly and a sleeve assembly according to the present invention;
FIG. 8 is a schematic view of the installation of the bar slot and static pressure bushing of the present invention;
fig. 9 is a schematic view of the angle range θ structure of the elbow grinding rod of the present invention.
In the figure: 1. a grinding rod assembly; 101. a positioning plate; 102. a mounting hole; 103. a flexible shaft steering hole; 104. a fluid flow path; 105. grinding the elbow into a rod; 2. a transmission flexible shaft; 3. a shaft assembly; 301. a static pressure shaft body; 302. an injection hole; 303. an output aperture; 304. a bar-shaped groove; 4. a sleeve assembly; 401. a static pressure shaft sleeve; 402. a spin-shaped notch; 5. grinding wheel; 6. a compression nut; 7. a ball nut assembly; 701. a ball nut body; 702. a raceway; 703. a guide plate; 8. a switching component; 801. a quick connector; 802. an injection tube.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-9, the present invention provides a technical solution: the high-precision ball nut thread groove grinding mechanism comprises a positioning plate 101 and an elbow grinding rod 105 in a grinding rod assembly 1, wherein an installation space is provided for an installation hole 102, a flexible shaft steering hole 103 and a fluid flow channel 104, when the high-precision ball nut thread groove grinding mechanism is used, one end of a transmission flexible shaft 2 arranged in the installation hole 102 and the flexible shaft steering hole 103 is in butt joint with the output end of a motor, so that the transmission flexible shaft 2 drives a grinding wheel 5 to be positioned in a ball nut body 701 for grinding, when the high-precision ball nut thread groove grinding mechanism is used, the rotation axial angle between the elbow grinding rod 105 and a static pressure shaft body 301 is used, the spiral angle of the ball nut thread groove grinding mechanism is consistent with the spiral angle of the ball track 702 in the ball nut body 701, the grinding of the ball track 702 is facilitated, compressed gas or compressed liquid is externally connected under the linkage of a quick-connection joint 801 and an injection pipe 802, and the fluid is injected into the fluid flow channel 104 to the injection hole 302, so that the gap between the static pressure shaft body 301 and the static pressure shaft 401 is fully soaked, friction is reduced, and lubrication and cooling are carried out;
in this embodiment, referring to fig. 1-5 in the drawings of the specification, a grinding rod assembly 1 is provided with a transmission flexible shaft 2 inside, a shaft body assembly 3 is installed inside the end face of the transmission flexible shaft 2, the side wall surface of the shaft body assembly 3 is in clearance and is in clamping connection with the inner wall surface of a shaft sleeve assembly 4, the side wall of the shaft sleeve assembly 4 is provided with a grinding wheel 5, the side wall surface of the grinding wheel 5 is in contact with the side wall surface of a compression nut 6, the inside of the compression nut 6 is penetrated by the shaft body assembly 3, the compression nut 6 penetrates through the inside of a ball nut assembly 7, the grinding rod assembly 1 is in butt joint with one end of an adapter assembly 8, the rotation axes of the compression nut 6 and the grinding wheel 5 are consistent, and the rotation axis angle of the grinding wheel 5 and the shaft body assembly 3 is consistent with the screw lead angle of the ball nut assembly 7;
in some embodiments, the structure is coaxially and rotatably connected with the transmission flexible shaft 2 inside the grinding rod assembly 1 through a motor, as shown in fig. 1, so that the transmission flexible shaft 2 penetrates through the shaft body assembly 3 and the shaft sleeve assembly 4 when in rotation use, as shown in fig. 2 and 3, the output end of the grinding rod assembly 1 is matched with the compression nut 6 to be in clamping connection in use, so that the compression nut 6 and the grinding wheel 5 realize rotation under the rotation of the transmission flexible shaft 2, the grinding wheel 5 is positioned inside the ball nut assembly 7 for grinding operation of thread grooves when in rotation operation use, and compressed liquid or compressed gas through the switching assembly 8 enters into a gap between the shaft body assembly 3 and the shaft sleeve assembly 4 to be filled when the transmission flexible shaft 2 penetrates through the shaft body assembly 3 and the shaft sleeve assembly 4, so that the surface of the shaft body assembly 3 is reduced in friction and lubricated and cooled, as shown in fig. 5, and the grinding operation of the auxiliary grinding wheel 5 is positioned inside the ball nut assembly 7;
in some implementations, as shown in fig. 2-5 in conjunction with the drawings of the specification, the grinding bar assembly 1 includes: the positioning plate 101 is provided with a sheet-shaped structure, a mounting hole 102 is formed in the positioning plate 101, a flexible shaft steering hole 103 is formed in one end of the mounting hole 102, a fluid flow passage 104 which is arranged in the positioning plate 101 and is L-shaped, and an elbow grinding rod 105 which is arranged in the middle of one side of the positioning plate 101, wherein the positioning plate 101 and the elbow grinding rod 105 form a block structure with a T-shaped cross section, and the upper end of the positioning plate 101 is provided with a groove which is in clamping connection with the switching assembly 8;
in some embodiments, the positioning plate 101 and the elbow grinding rod 105 form an integral block structure, as shown in fig. 1 and 5, so that the positioning plate 101 and the elbow grinding rod 105 form a block structure with a T-shaped cross section, wherein the end surface of the elbow grinding rod 105 is provided with an inclined surface structure, so that the arrangement of the shaft body assembly 3 and the adjustment of lead helix angle by matching with ball nut equipment with different specifications are facilitated, the transmission flexible shaft 2 positioned in the installation hole 102 and the flexible shaft steering hole 103 is enabled to carry out polishing operation in a channel positioned in the ball nut assembly 7, as shown in fig. 3, the transmission flexible shaft 2 is positioned in a theta angle range of the port of the installation hole 102 penetrated by the elbow grinding rod 105 and the shaft body assembly 3, as shown in fig. 9, the direction of transmission power can be changed according to the theta angle of the elbow grinding rod 105, and the rotation shaft of the grinding wheel 5 is enabled to be always in a parallel state with the helix angle of the thread lead in the ball nut assembly 7, and the channel is used for polishing operation;
in some embodiments, as shown in fig. 3-4 in conjunction with the drawings of the specification, the ball nut assembly 7 includes: the ball nut comprises a ball nut body 701, a rollaway nest 702 and a guide plate 703, wherein the ball nut body 701 is penetrated by the elbow grinding rod 105, the rollaway nest 702 is spirally arranged on the inner wall of the ball nut body 701, and the guide plate 703 is arranged on the inner wall of the rollaway nest 702;
in some embodiments, the raceway 702 in the ball nut body 701 is a thread groove to be ground, when the raceway 702 is ground, the groove in the raceway 702 is in contact with the grinding wheel 5, as shown in fig. 3 and 4, as the raceway 702 is spirally arranged, the grinding wheel 5 is driven by the driving force of the driving flexible shaft 2, wherein the driving flexible shaft 2 needs to be matched with the lead helix angles of ball nut equipment with different specifications for adjustment along with the grinding work, so that the direction of the driving flexible shaft 2 for transmitting the driving force is changed, the driving flexible shaft 2 and the grinding wheel 5 are kept parallel to the helix angle of the raceway 702 in the ball nut body 701, and the situations of interference, collision and the like between the elbow grinding rod 105 and the inner wall of the ball nut body 701 when multiple leads or large leads of the ball nut thread groove are ground are solved;
examples
The invention provides a high-precision ball nut thread groove grinding mechanism, which is characterized in that in the embodiment, as shown in figures 1-6 and 8 combined with the drawings of the specification, a shaft body assembly 3 comprises a static pressure shaft body 301 arranged inside the end face of an elbow grinding rod 105, an injection hole 302 penetrating through the static pressure shaft body 301, an output hole 303 symmetrically arranged at one end of the static pressure shaft body 301, a shaft sleeve assembly 4 comprises a static pressure shaft sleeve 401 connected with one end of the static pressure shaft body 301, the static pressure shaft sleeve 401 is aligned with the shaft center of the static pressure shaft body 301, and the inner wall of the static pressure shaft sleeve 401 is in butt joint with one side end face of the output hole 303;
when the device is used, the static pressure shaft body 301 in the shaft body assembly 3 and the static pressure shaft sleeve 401 in the shaft sleeve assembly 4 are sleeved and combined for use, as shown in fig. 5, compressed gas or compressed liquid enters the position of the static pressure shaft body 301, which is in penetrating connection with the transmission flexible shaft 2, through the injection hole 302 in the static pressure shaft body 301 during use, so that the liquid is transported out towards the output hole 303 of the static pressure shaft body 301, as shown in fig. 5 and 6, the compressed gas or the compressed liquid discharged from the output hole 303 is filled in a gap between the static pressure shaft sleeve 401 contacted with the output hole 303 and the static pressure shaft body 301, so that the static pressure shaft body 301 and the static pressure shaft sleeve 401 are kept in a suspension state for use, friction of the transmission flexible shaft 2 during high-speed rotation is reduced, and meanwhile, cooling and lubrication operation use are performed;
examples
The invention provides a high-precision ball nut thread groove grinding mechanism, which is shown in figures 7-8 in combination with the accompanying drawings of the specification in the embodiment, wherein a strip-shaped groove 304 communicated with an output hole 303 is formed on the outer wall surface of a static pressure shaft body 301 in an included angle manner, one end of the static pressure shaft body 301 provided with the strip-shaped groove 304 is sleeved with a shaft sleeve assembly 4, a spiral notch 402 is formed in the output end of the static pressure shaft sleeve 401 in an annular equidistant manner, and the diameter of one end of the static pressure shaft body 301 sleeved with the static pressure shaft sleeve 401 is smaller than the diameter of the other end of the static pressure shaft body 301;
the strip-shaped groove 304 is arranged on the outer wall of the static pressure shaft body 301 in an included angle manner, as shown in fig. 7 and 8, the strip-shaped groove 304 is communicated with the output end of the output hole 303, so that discharged compressed gas or compressed liquid can be filled between the static pressure shaft sleeve 401 and the static pressure shaft body 301, the rotary notch 402 is arranged on the output end of the static pressure shaft sleeve 401, as shown in fig. 8, the static pressure shaft sleeve 401 expands the output port for discharging the compressed gas or the compressed liquid, the static pressure shaft sleeve 401 is convenient to suspend to the surface of the static pressure shaft body 301, friction is reduced, lubrication and cooling are carried out, the stability of a grinding mechanism of a ball nut groove and the service life of the static pressure shaft body 301, the static pressure shaft sleeve 401 and other devices are improved, wherein one end of the static pressure shaft body 301 with a smaller diameter is convenient to be connected with the static pressure shaft sleeve 401 in a sleeved mode, and the grinding wheel 5 is convenient to assist in the side wall of the static pressure shaft sleeve 401, and the ball nut assembly 7 is convenient to process under the cooperation of the compression nut 6;
in some embodiments, as shown in fig. 1-5 in conjunction with the drawings of the specification, the adapter assembly 8 comprises a quick connector 801 and an injection pipe 802, wherein the quick connector 801 is in butt joint with a groove at the upper end of the positioning plate 101, the quick connector 801 is communicated with an inner pipeline of the injection pipe 802, an output end at the bottom end of the injection pipe 802 is in butt joint with a port at the top end of the fluid flow passage 104, and the fluid flow passage 104 and the injection hole 302 are communicated with the inner pipeline of the injection pipe 802;
in some embodiments, the quick connector 801 is communicated with the inner pipe of the injection pipe 802, when in use, external compressed gas or compressed liquid is input into the inner injection pipe 802 through the quick connector 801, the inside of the injection pipe 802 is in a funnel-shaped output pipe orifice structure, the impact range of the compressed gas or compressed liquid is reduced, the compressed gas or compressed liquid is convenient to input into the fluid flow passage 104, the fluid flow passage 104 is positioned in the positioning plate 101 and the elbow grinding rod 105 to form an L-shaped structure, as shown in fig. 5, the fluid flow passage 104 is arranged in the same direction as the mounting hole 102, so that the static pressure shaft body 301 positioned at the port of the flexible shaft steering hole 103 is in butt joint with the output end of the fluid flow passage 104, as shown in fig. 5, the compressed gas or the compressed liquid is convenient to enter the injection hole 302, and the use effect of lubrication and cooling is provided for the gap between the static pressure shaft body 301 and the static pressure shaft sleeve 401.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a high accuracy ball nut screw thread slot grinding mechanism, includes grinding rod subassembly (1), its characterized in that:
the grinding rod assembly (1) is internally provided with a transmission flexible shaft (2), an axle body assembly (3) is arranged in the end face of the transmission flexible shaft (2), the side wall face of the axle body assembly (3) is in clamping connection with the inner wall face gap of the axle sleeve assembly (4), the side wall of the axle sleeve assembly (4) is provided with a grinding wheel (5), the side wall face of the grinding wheel (5) is in contact with the side wall face of a compression nut (6), the inside of the compression nut (6) is penetrated by the axle body assembly (3), the compression nut (6) penetrates the inside of a ball nut assembly (7), the grinding rod assembly (1) is in butt joint with one end of the switching assembly (8), the rotation axes of the compression nut (6) and the grinding wheel (5) are consistent, and the rotation axis angle of the grinding wheel (5) and the rotation axis angle of the axle body assembly (3) is consistent with the spiral lead angle of the thread lead of the ball nut assembly (7).
The grinding rod assembly (1) comprises: the positioning plate (101) is arranged into a sheet structure, a mounting hole (102) is formed in the positioning plate (101), a flexible shaft steering hole (103) is formed in one end of the mounting hole (102), a fluid flow channel (104) which is arranged in the positioning plate (101) and is L-shaped, and an elbow grinding rod (105) which is arranged in the middle of one side of the positioning plate (101), wherein the positioning plate (101) and the elbow grinding rod (105) form a block structure with a T-shaped cross section, and the upper end of the positioning plate (101) is provided with a groove which is in clamping connection with the switching assembly (8);
the ball nut assembly (7) comprises: ball nut body (701), raceway (702) and deflector (703), and ball nut body (701) are run through by elbow mill pole (105), and ball nut body (701) inner wall is the heliciform and is provided with raceway (702), and raceway (702) inner wall is provided with deflector (703).
2. The high precision ball nut thread groove grinding mechanism of claim 1, wherein: the side wall surface of the positioning plate (101) is provided with a groove which is in butt joint with the output end of the motor, and the side wall groove of the positioning plate (101) is communicated with the mounting hole (102) and one end of the fluid flow channel (104).
3. The high precision ball nut thread groove grinding mechanism of claim 1, wherein: the installation hole (102) and the flexible shaft steering hole (103) form an arc-shaped pipe hole, and a transmission flexible shaft (2) is arranged inside the installation hole (102) and the flexible shaft steering hole (103).
4. The high precision ball nut thread groove grinding mechanism of claim 1, wherein: the inside of the elbow grinding rod (105) is penetrated by the mounting hole (102), the flexible shaft steering hole (103) and the fluid flow passage (104), and the fluid flow passage (104) is in butt joint with the side wall of the injection hole (302).
5. The high precision ball nut thread groove grinding mechanism of claim 1, wherein: the shaft body assembly (3) comprises a static pressure shaft body (301) arranged in the end face of the elbow grinding rod (105), an injection hole (302) penetrating through the static pressure shaft body (301), and output holes (303) symmetrically arranged at one end of the static pressure shaft body (301).
6. The high-precision ball nut thread groove grinding mechanism according to claim 5, wherein: the outer wall of the static pressure shaft body (301) is provided with a strip-shaped groove (304) communicated with the output hole (303) in an included angle mode, and one end, provided with the strip-shaped groove (304), of the static pressure shaft body (301) is sleeved with the shaft sleeve assembly (4) to be installed.
7. The high precision ball nut thread groove grinding mechanism of claim 1, wherein: the shaft sleeve assembly (4) comprises a static pressure shaft sleeve (401) connected with one end of the static pressure shaft body (301), the static pressure shaft sleeve (401) is aligned with the shaft center of the static pressure shaft body (301), and the inner wall of the static pressure shaft sleeve (401) is in butt joint with one side end face of the output hole (303).
8. The high precision ball nut thread groove grinding mechanism as claimed in claim 7, wherein: the annular rotary notch (402) is formed in the output end of the static pressure shaft sleeve (401) at equal intervals, and the diameter of one end of the static pressure shaft body (301) sleeved with the static pressure shaft sleeve (401) is smaller than that of the other end of the static pressure shaft body (301).
9. The high precision ball nut thread groove grinding mechanism of claim 1, wherein: the switching assembly (8) comprises a quick connector (801) and an injection pipe (802), the quick connector (801) is in butt joint with a groove at the upper end of the positioning plate (101), and the quick connector (801) is communicated with an inner pipeline of the injection pipe (802).
10. The high precision ball nut thread groove grinding mechanism of claim 9, wherein: the bottom output end of the injection pipe (802) is in butt joint with the top end port of the fluid flow channel (104), and the fluid flow channel (104) and the injection hole (302) are communicated with the inner pipeline of the injection pipe (802).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202310279971.3A CN116060708B (en) | 2023-03-22 | 2023-03-22 | High-precision ball nut thread groove grinding mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310279971.3A CN116060708B (en) | 2023-03-22 | 2023-03-22 | High-precision ball nut thread groove grinding mechanism |
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| CN116060708A true CN116060708A (en) | 2023-05-05 |
| CN116060708B CN116060708B (en) | 2024-06-21 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170888A (en) * | 2013-03-29 | 2013-06-26 | 上海大学 | Flexible shaft grinding head system of large-lead ball nut grinding and grinding method for machining nut |
| JP2013129029A (en) * | 2011-12-22 | 2013-07-04 | Ntn Corp | Grinding spindle unit |
| CN203471087U (en) * | 2013-10-09 | 2014-03-12 | 山东博特精工股份有限公司 | Grinding device for ball screw nut |
| CN203936773U (en) * | 2014-06-24 | 2014-11-12 | 舒能（苏州）工业技术有限公司 | A kind of bending bistrique of driven by quill shaft |
| CN113001334A (en) * | 2021-03-11 | 2021-06-22 | 无锡市科之鑫机械科技有限公司 | Elbow grinding rod structure for grinding high-precision large-lead nut |
-
2023
- 2023-03-22 CN CN202310279971.3A patent/CN116060708B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013129029A (en) * | 2011-12-22 | 2013-07-04 | Ntn Corp | Grinding spindle unit |
| CN103170888A (en) * | 2013-03-29 | 2013-06-26 | 上海大学 | Flexible shaft grinding head system of large-lead ball nut grinding and grinding method for machining nut |
| CN203471087U (en) * | 2013-10-09 | 2014-03-12 | 山东博特精工股份有限公司 | Grinding device for ball screw nut |
| CN203936773U (en) * | 2014-06-24 | 2014-11-12 | 舒能（苏州）工业技术有限公司 | A kind of bending bistrique of driven by quill shaft |
| CN113001334A (en) * | 2021-03-11 | 2021-06-22 | 无锡市科之鑫机械科技有限公司 | Elbow grinding rod structure for grinding high-precision large-lead nut |
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|---|---|
| CN116060708B (en) | 2024-06-21 |
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