CN117381080B - High-precision ball screw nut compound grinding device - Google Patents
High-precision ball screw nut compound grinding device Download PDFInfo
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- CN117381080B CN117381080B CN202311582504.4A CN202311582504A CN117381080B CN 117381080 B CN117381080 B CN 117381080B CN 202311582504 A CN202311582504 A CN 202311582504A CN 117381080 B CN117381080 B CN 117381080B
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- 150000001875 compounds Chemical class 0.000 title claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 78
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 238000003754 machining Methods 0.000 claims description 17
- 238000012545 processing Methods 0.000 abstract description 13
- 238000010030 laminating Methods 0.000 abstract 1
- 230000008054 signal transmission Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 13
- 238000009434 installation Methods 0.000 description 6
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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
-
- 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
- B23G1/44—Equipment or accessories specially designed for machines or devices for thread cutting
-
- 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
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/067—Work supports, e.g. adjustable steadies radially supporting workpieces
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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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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
The invention belongs to the technical field of grinding, in particular to a high-precision ball screw nut compound grinding device, which comprises: a mounting base; the front end of the upper surface of the mounting base is fixedly connected with a second mounting table, and the rear end of the upper surface of the mounting base is fixedly connected with a first mounting table; the clamping mechanism, the internal grinding mechanism, the external grinding mechanism, the said external grinding mechanism is installed on the upper surface of the said first mount table, the auxiliary mechanism; through being provided with secondary centering mechanism, when two supplementary cover laminating, detection mechanism obtains information, gives external controller with information transfer, and the controller is given the impeller with signal transmission again, starts secondary centering mechanism through the impeller and treats the lead screw nut of processing and carry out secondary aligning, when two supplementary covers are separated, can follow the both sides of the front end of left and right sides two direction cooperation centre gripping lead screw nut, offset the backward thrust when partly internal thread processing from the rear for holistic centre gripping is more firm.
Description
Technical Field
The invention belongs to the technical field of grinding, and particularly relates to a high-precision ball screw nut compound grinding device.
Background
The traditional grinding method of the ball screw nut is mainly characterized in that an independent internal thread grinder is used for grinding the internal thread of the ball screw nut, and then an external cylindrical grinder is replaced for continuously grinding the external diameter and the end face of the ball screw nut;
One patent application with the application number 202011468889.8 discloses a ball screw nut compound grinding device, which comprises: the inner ring of the self-rotating support is provided with a rotating ring which can coaxially rotate; the three-jaw middle section clamp is arranged in the rotating ring, and the inner ring of the three-jaw middle section clamp is provided with three abutting blocks; the pre-material positioner is arranged at two sides of the self-rotation support, a V-shaped groove supporting plate with an upward opening is arranged at the working end of the pre-material positioner and used for placing the screw nut, and an end surface supporting sheet used for supporting and connecting the two ends of the screw nut is obliquely arranged at the outer end of the V-shaped groove supporting plate opposite to the middle clamp of the three-jaw clamp; the working end of the screw rod translation driver is radially arranged at two ends of the self-rotation support along the three-jaw middle-section clamp holder, and the working end of the screw rod translation driver is sequentially provided with a positioning measurement mechanism, an inner peripheral surface grinding mechanism, an end surface grinding mechanism, an abutting rotating mechanism and an outer peripheral surface grinding robot which are coaxially oriented to the three-jaw middle-section clamp holder.
In the prior art, in order to maintain coaxiality during clamping of a screw nut, clamping jaws in the shape of a three-jaw chuck are used for clamping the surface of the nut, but grinding of the inner thread and the outer surface of the screw nut is realized, the clamping position cannot shield a machining surface, and the existing clamping mode can maintain the clamping precision, but shields the machining surface, so that secondary clamping is needed, and the machining precision is affected;
In addition, in order to reduce shielding of the clamping surface in the prior art, the clamping area is also reduced, but during machining, because of compound grinding, the inner surface and the outer surface of the screw nut are stressed, the clamping is possibly loosened, and the machining precision is affected.
Therefore, the invention provides a high-precision ball screw nut compound grinding device.
Disclosure of Invention
In order to make up the defect of the prior art, in order to solve the prior art that proposes in the prior art, to the centre gripping of screw-nut, in order to keep the axiality when centre gripping, all rely on the clamping jaw of three-jaw chuck shape to carry out the centre gripping to the surface of nut, but to realize the grinding to the internal thread and the surface of screw-nut, the position of centre gripping can not shelter from the machined surface, but current clamping mode can keep the precision of centre gripping, but can shelter from the machined surface, need carry out secondary centre gripping, influence the problem of the precision of processing.
The technical scheme adopted for solving the technical problems is as follows: the invention relates to a high-precision ball screw nut compound grinding device, which comprises:
A mounting base; the front end of the upper surface of the mounting base is fixedly connected with a second mounting table, and the rear end of the upper surface of the mounting base is fixedly connected with a first mounting table;
The clamping mechanism is arranged at the rear end of the upper surface of the second mounting table and is used for clamping and fixing a screw nut to be processed;
The inner grinding mechanism is arranged at the front end of the upper surface of the second mounting table and is used for carrying out internal thread machining on the inner side surface of the screw nut to be machined;
the external grinding mechanism is arranged on the upper surface of the first mounting table and is used for grinding the outer side surface of the screw nut to be processed;
The auxiliary mechanism is arranged on the upper surface of the second mounting table, is positioned behind the clamping mechanism and is used for assisting in position adjustment of a screw nut to be processed before clamping.
Preferably, the clamping mechanism comprises a lower connecting plate and a second upper mounting plate, the lower connecting plate is fixedly mounted on the upper surface of the second mounting table, and the second upper mounting plate is fixedly mounted on the upper surface of the second mounting table at a position above the lower connecting plate;
the upper surface of the lower connecting plate is fixedly provided with a lower clamping plate, and the rear surface of the lower clamping plate is provided with a guide rod which is matched with the screw rod nut to be processed;
the upper surface of the second upper mounting plate is fixedly provided with a clamping cylinder, the telescopic end of the clamping cylinder penetrates through the second upper mounting plate and is fixedly connected with an upper clamping plate, and the lower surface of the upper clamping plate is fixedly connected with a positioning block;
and a positioning groove matched with the positioning block is formed in the upper surface of the lower clamping plate.
Preferably, the internal grinding mechanism comprises a driving motor, a first upper mounting plate is mounted on the upper surface of the first mounting table, a tap for grinding internal threads is fixedly connected with an output shaft on the rear surface of the first upper mounting plate, and a motor mounting plate is fixedly connected with the surface of the driving motor;
the lower surface of the motor mounting plate is connected with a sliding seat in a sliding way, and a first driving piece for driving the motor mounting plate to transversely move is arranged on the left side of the upper surface of the sliding seat;
The lower surface of the sliding seat is connected with the second mounting table in a front-back sliding way, and the front surface of the sliding seat is provided with a second driving piece for driving the sliding seat to move back and forth.
Preferably, the first driving piece is a second telescopic cylinder, the telescopic end of the second telescopic cylinder is fixedly connected with the second telescopic cylinder, and the fixed end of the second telescopic cylinder is fixedly connected with the sliding seat;
The second driving piece is a first telescopic cylinder, the telescopic end of the first telescopic cylinder is fixedly connected with the sliding seat, and the fixed end of the first telescopic cylinder is fixedly connected with the second mounting table.
Preferably, the external grinding mechanism comprises a vertical plate, the vertical plate is connected to the lower surface of the first upper mounting plate in a sliding manner, the rear surface of the vertical plate is fixedly connected with a grinding motor, the front surface of the vertical plate is rotationally connected with a mounting disc, and the front surface of the mounting disc is provided with a grinding rod for grinding the outer surface of the screw nut to be processed;
the mounting disc is fixedly connected with an output shaft of the grinding motor;
the vertical plate is characterized by further comprising a third driving piece, wherein the third driving piece is used for driving the vertical plate to move back and forth.
Preferably, the third driving piece comprises a rotating motor and a screw rod, the rotating motor is fixedly arranged at the rear end of the lower surface of the first upper mounting plate, the screw rod is fixedly connected with the front end output shaft of the first upper mounting plate, and the screw rod is in threaded connection with the vertical plate.
Preferably, the auxiliary mechanism comprises a sliding base and a fourth driving piece for driving the sliding base to move forwards and backwards, a sliding groove is formed in the upper surface of the second mounting table, a sliding block is connected in the sliding groove in a sliding mode, the lower surface of the sliding base is fixedly connected with the sliding block, and a connecting plate is fixedly connected to the lower end of the sliding block;
the device comprises a connecting plate, a first pressure sensor, a second pressure sensor and a rear baffle plate, wherein the first pressure sensor is fixedly arranged on the rear surface of the connecting plate, the second pressure sensor is fixedly arranged on the front surface of the connecting plate, and the rear baffle plate is fixedly arranged on the lower surface of the second mounting table and is positioned right behind the connecting plate;
the fourth driving piece comprises a pushing air cylinder which is fixedly arranged on the lower surface of the second mounting table, and the telescopic end of the pushing air cylinder is fixedly connected with the connecting plate;
the sliding base is characterized in that two sides of the upper surface of the sliding base are provided with transverse sliding grooves, the inner parts of the transverse sliding grooves are connected with auxiliary sleeves in a sliding mode, and transverse electric push rods used for driving the auxiliary sleeves to move are further arranged in the transverse sliding grooves.
Preferably, the two auxiliary sleeves are internally provided with a secondary centering mechanism;
The secondary centering mechanism comprises a mounting groove, the mounting groove is formed in the two auxiliary sleeves, a first semicircular ring and a second semicircular ring are respectively connected in the two auxiliary sleeves in a rotating mode, and the first semicircular ring and the second semicircular ring are combined into a complete circular ring through a sliding block sliding groove;
The rear surfaces of the first semicircular ring and the second semicircular ring are fixedly provided with guide rails in a vortex-shaped line shape;
The mounting grooves in the two auxiliary sleeves are combined into a complete circular groove, an inner fixing plate is arranged in the inner circumference array of the mounting groove, the front surface of the inner fixing plate is connected with a clamping block in a sliding manner, and the front surface of the clamping block is provided with a sliding groove matched with the guide rail;
The secondary centering mechanism further comprises a detection mechanism and a pushing piece, the detection mechanism is used for detecting whether two auxiliary sleeves are attached or not, the pushing piece is used for pushing the first semicircular ring and the second semicircular ring to be combined into a circular ring to rotate, and secondary centering is carried out on a screw nut to be processed.
Preferably, the detection mechanism comprises two connecting strips, the two connecting strips are respectively and fixedly arranged in the mounting grooves in the two auxiliary sleeves, and a third pressure sensor is fixedly arranged on the surface of the connecting strip positioned at one side.
Preferably, the pushing piece comprises a centering electric push rod and a pushing column, the centering electric push rod is fixedly arranged on the inner wall of the front end of the mounting groove in the auxiliary sleeve, the pushing column is slidably connected on the inner wall of the front end of the mounting groove in the auxiliary sleeve, and the telescopic end of the centering electric push rod is connected with the pushing column;
the pushing column is close to one side surface of the second semicircular ring and is in meshed connection with the second semicircular ring through a gear.
The beneficial effects of the invention are as follows:
1. according to the high-precision ball screw nut compound grinding device, the clamping mechanism is arranged, the guide rod extends into the mounting hole of the screw nut to be processed, the screw nut to be processed is fixed through the guide rod, the upper surface and the lower surface of the front end of the screw nut to be processed are clamped through the lower clamping plate and the upper clamping plate, and then the clamping of the screw nut to be processed is completed, and the outer surface of the cylindrical part of the rear end of the screw nut to be processed and the inner surface of the screw nut to be processed are not shielded.
2. According to the high-precision ball screw nut compound grinding device, the secondary centering mechanism is arranged, when the two auxiliary sleeves are attached, the detection mechanism obtains information, the information is transmitted to the external controller, the controller transmits a signal to the pushing piece, the pushing piece starts the secondary centering mechanism to perform secondary centering on the screw nut to be processed, when the two auxiliary sleeves are separated, the two sides of the front end of the screw nut can be matched and clamped from the left direction and the right direction, and the backward thrust during processing of part of internal threads is offset from the rear, so that the whole clamping is more stable.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is an enlarged view of a portion of the invention at A in FIG. 1;
FIG. 3 is a cross-sectional view of the present invention;
FIG. 4 is an enlarged view of a portion of the invention at B in FIG. 3;
FIG. 5 is a schematic diagram of another view of the structure of FIG. 3 in accordance with the present invention;
FIG. 6 is an enlarged view of a portion of the invention at C in FIG. 5;
FIG. 7 is a schematic view in partial cross-section of the present invention;
FIG. 8 is an enlarged view of a portion of the invention at D in FIG. 7;
FIG. 9 is a partial cross-sectional view of the interior of the mounting slot of the present invention;
FIG. 10 is an enlarged view of a portion of FIG. 9 at E in accordance with the present invention;
Fig. 11 is a partial enlarged view of F in fig. 9 in the present invention.
In the figure: 1. a mounting base; 101. a first mounting table; 102. a second mounting table; 2. a first upper mounting plate; 201. a second upper mounting plate; 202. a clamping cylinder; 203. an upper clamping plate; 204. a positioning block; 205. a lower clamping plate; 206. a positioning groove; 207. a guide rod; 3. a driving motor; 301. a tap; 4. a sliding seat; 401. a first telescopic cylinder; 402. a motor mounting plate; 403. the second telescopic cylinder; 5. a rotating motor; 501. a riser; 502. a screw rod; 6. a pushing cylinder; 601. a rear baffle; 602. a sliding groove; 603. a sliding block; 604. a connecting plate; 7. a first pressure sensor; 701. a second pressure sensor; 8. grinding the motor; 801. a disk is installed; 802. grinding the rod; 9. a sliding base; 901. a lower clamping plate; 902. a transverse chute; 903. a transverse electric push rod; 10. an auxiliary sleeve; 11. a mounting groove; 1101. an inner fixing plate; 1102. a first semi-circular ring; 1103. a second semicircle ring; 1104. a guide rail; 1105. a clamping block; 12. a connecting strip; 1201. a third pressure sensor; 13. pushing the column; 1301. centering electric push rod.
Detailed Description
The invention is further described in connection with the following detailed description in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
As shown in fig. 1 to 11, a high-precision ball screw nut compound grinding device according to an embodiment of the present invention includes:
a mounting base 1; the front end of the upper surface of the mounting base 1 is fixedly connected with a second mounting table 102, and the rear end of the upper surface of the mounting base 1 is fixedly connected with a first mounting table 101;
The clamping mechanism is arranged at the rear end of the upper surface of the second mounting table 102 and is used for clamping and fixing a screw nut to be processed;
An inner grinding mechanism which is installed at the front end of the upper surface of the second installation table 102 and is used for performing internal thread processing on the inner side surface of the screw nut to be processed;
An external grinding mechanism which is installed on the upper surface of the first installation table 101 and is used for grinding the outer side surface of the screw nut to be processed;
The auxiliary mechanism is arranged on the upper surface of the second mounting table 102, is positioned behind the clamping mechanism and is used for assisting the screw nut to be processed to carry out position adjustment before clamping;
In the prior art, in order to maintain coaxiality during clamping of a screw nut, clamping jaws in the shape of a three-jaw chuck are used for clamping the surface of the nut, but grinding of the inner thread and the outer surface of the screw nut is realized, the clamping position cannot shield a machining surface, and the existing clamping mode can maintain the clamping precision, but shields the machining surface, so that secondary clamping is needed, and the machining precision is affected;
the technical scheme can solve the problems, and the specific mode is as follows:
In use, the screw nut to be processed is mounted on the clamping mechanism, in the mounting process, the auxiliary mechanism is matched with the clamping mechanism to keep the same mounting position of the screw nut to be processed in each mounting, then the screw nut is subjected to compound grinding through the outer grinding mechanism and the inner grinding mechanism, and the clamping mechanism does not shade the processing surface in the grinding process.
As shown in fig. 1 to 11, the clamping mechanism comprises a lower connecting plate 901 and a second upper mounting plate 201, wherein the lower connecting plate 901 is fixedly mounted on the upper surface of the second mounting table 102, and the second upper mounting plate 201 is fixedly mounted on the upper surface of the second mounting table 102 at a position above the lower connecting plate 901;
The upper surface of the lower connecting plate 901 is fixedly provided with a lower clamping plate 205, and the rear surface of the lower clamping plate 205 is provided with a guide rod 207 which is matched with a screw nut to be processed;
The upper surface of the second upper mounting plate 201 is fixedly provided with a clamping cylinder 202, the telescopic end of the clamping cylinder 202 penetrates through the second upper mounting plate 201 and is fixedly connected with an upper clamping plate 203, and the lower surface of the upper clamping plate 203 is fixedly connected with a positioning block 204;
the upper surface of the lower clamping plate 205 is provided with a positioning groove 206 which is matched with the positioning block 204;
In the use, through the lead screw nut that will transversely move wait to process, stretch into the mounting hole inside of lead screw nut that wait to process with guide bar 207, fix the lead screw nut that wait to process through guide bar 207, the upper and lower surface of lead screw nut front end that the rethread lower connecting plate 901 and last grip block 203 wait to process is held, accomplish the centre gripping of the lead screw nut that wait to process then, and do not shelter from the surface of the cylindrical part of lead screw nut rear end that wait to process and the internal surface of lead screw nut that wait to process.
As shown in fig. 1 to 11, the internal grinding mechanism comprises a driving motor 3, a first upper mounting plate 2 is mounted on the upper surface of a first mounting table 101, a tap 301 for grinding internal threads is fixedly connected to an output shaft on the rear surface of the first upper mounting plate 2, and a motor mounting plate 402 is fixedly connected to the surface of the driving motor 3;
The lower surface of the motor mounting plate 402 is connected with a sliding seat 4 in a sliding way, and a first driving piece for driving the motor mounting plate 402 to transversely move is arranged on the left side of the upper surface of the sliding seat 4;
the lower surface of the sliding seat 4 is connected with the second mounting table 102 in a front-back sliding way, and the front surface of the sliding seat 4 is provided with a second driving piece for driving the sliding seat 4 to move back and forth;
The specific processing mode of the internal grinding mechanism is as follows:
When the screw rod nut machining device is used, the driving motor 3 and the screw tap 301 are driven by the second driving piece to extend backwards into the inner side surface of the screw rod nut to be machined, then the screw tap 301 is driven by the driving motor 3 to rotate, finally the screw tap 301 is driven by the first driving piece to transversely move on the inner side surface of the screw rod nut to be machined, internal threads are machined on the inner side surface of the screw rod nut to be machined, compared with a traditional machining mode, machining can be conducted on one side of the screw rod nut to be machined, machining on the other side is not affected, and efficiency is improved in a combined machining mode.
As shown in fig. 1 to 11, the first driving member is a second telescopic cylinder 403, a telescopic end of the second telescopic cylinder 403 is fixedly connected with the second telescopic cylinder 403, and a fixed end of the second telescopic cylinder 403 is fixedly connected with the sliding seat 4;
the second driving piece is a first telescopic cylinder 401, the telescopic end of the first telescopic cylinder 401 is fixedly connected with the sliding seat 4, and the fixed end of the first telescopic cylinder 401 is fixedly connected with the second mounting table 102.
As shown in fig. 1 to 11, the external grinding mechanism comprises a vertical plate 501, wherein the vertical plate 501 is slidably connected to the lower surface of a first upper mounting plate 2, the rear surface of the vertical plate 501 is fixedly connected with a grinding motor 8, the front surface of the vertical plate 501 is rotatably connected with a mounting disc 801, and the front surface of the mounting disc 801 is provided with a grinding rod 802 for grinding the outer surface of a screw nut to be processed;
the mounting disc 801 is fixedly connected with the output shaft of the grinding motor 8;
a third driving member for driving the riser 501 to move back and forth;
The external grinding mechanism is specifically processed as follows:
When the grinding device is used, the third driving piece drives the driving vertical plate 501 to be close to the screw nut to be machined forwards, the grinding motor 8 drives the grinding rod 802 to rotate, and the grinding rod 802 grinds the outer side surface of the machined screw nut.
Compared with the traditional processing mode, the screw nut processing device can process one side of the screw nut to be processed, does not affect the processing of the other side, and improves the efficiency in the mode of compound processing.
As shown in fig. 1 to 11, the third driving member includes a rotary motor 5 and a screw rod 502, the rotary motor 5 is fixedly installed at the rear end of the lower surface of the first upper mounting plate 2, the screw rod 502 is fixedly connected to the front end output shaft of the first upper mounting plate 2, and the screw rod 502 is connected with the vertical plate 501 through threads;
When the device is used, the rotary motor 5 is driven to rotate by the external controller, the screw rod 502 is driven to rotate, and the vertical plate 501 in threaded connection with the screw rod 502 is driven to move in the front-back direction.
As shown in fig. 1 to 11, the auxiliary mechanism comprises a sliding base 9 and a fourth driving piece for driving the sliding base 9 to move back and forth, a sliding groove 602 is formed in the upper surface of the second mounting table 102, a sliding block 603 is connected inside the sliding groove 602 in a sliding manner, the lower surface of the sliding base 9 is fixedly connected with the sliding block 603, and a connecting plate 604 is fixedly connected with the lower end of the sliding block 603;
The device further comprises a triggering mechanism, wherein the triggering mechanism comprises a first pressure sensor 7, a second pressure sensor 701 and a rear baffle 601, the first pressure sensor 7 is fixedly arranged on the rear surface of the connecting plate 604, the second pressure sensor 701 is fixedly arranged on the front surface of the connecting plate 604, and the rear baffle 601 is fixedly arranged on the lower surface of the second mounting table 102 at a position right behind the connecting plate 604;
The fourth driving piece comprises a pushing air cylinder 6, the pushing air cylinder 6 is fixedly arranged on the lower surface of the second mounting table 102, and the telescopic end of the pushing air cylinder 6 is fixedly connected with the connecting plate 604;
Transverse sliding grooves 902 are formed in two sides of the upper surface of the sliding base 9, an auxiliary sleeve 10 is connected inside each transverse sliding groove 902 in a sliding mode, and a transverse electric push rod 903 used for driving the auxiliary sleeve 10 to move is further arranged inside each transverse sliding groove 902;
In the prior art, certain deviation exists in each installation and placement of the screw rod nut, so that the accuracy of the same batch of processed screw rods can be influenced, and the technical scheme can solve the problems, and the screw rod nut is used in the process of use:
In the initial state, the telescopic end of the pushing cylinder 6 is positioned at the rearmost end, at the moment, the first pressure sensor 7 is in contact with the rear baffle 601, signals are sent to an external controller, the external controller sends the signals to the transverse electric push rod 903, the transverse electric push rod 903 is opened to the two sides to pull the auxiliary sleeve 10, at the moment, the screw rod nut is put on the upper surface of the sliding base 9, then the pushing cylinder 6 drives the whole body to move forwards, at the moment, the first pressure sensor 7 is separated from the rear baffle 601, the external controller sends the signals to the transverse electric push rod 903, the transverse electric push rod 903 is attached to the two sides to pull the auxiliary sleeve 10, the screw rod nut is positioned, when the screw rod nut reaches the foremost end, the second pressure sensor 701 is in contact with the pushing cylinder 6 body at the front end, the signals are sent to the external controller, the external controller sends the signals to the transverse electric push rod 903, the transverse electric push rod 903 is opened to the two sides to pull the auxiliary sleeve 10, and the outer grinding surface is prevented from being blocked;
Can be when lead screw nut removes it to fix a position, the clamping mechanism cooperation of its better and place ahead of being convenient for is automatic to expand after the centre gripping and avoids sheltering from the machined surface.
As shown in fig. 1 to 11, the inside of the two auxiliary jackets 10 is also provided with a secondary centering mechanism;
The secondary centering mechanism comprises a mounting groove 11, the mounting groove 11 is formed in the two auxiliary sleeves 10, a first semicircular ring 1102 and a second semicircular ring 1103 are respectively connected in the two auxiliary sleeves 10 in a rotating mode, and the first semicircular ring 1102 and the second semicircular ring 1103 are combined into a complete circular ring through a sliding block sliding groove;
the rear surfaces of the first semicircular ring 1102 and the second semicircular ring 1103 are fixedly provided with a guide rail 1104 in a vortex-shaped line shape;
The mounting grooves 11 in the two auxiliary sleeves 10 are combined into a complete circular groove, an inner fixing plate 1101 is arranged in an inner circumferential array of the mounting grooves 11, a clamping block 1105 is connected to the front surface of the inner fixing plate 1101 in a sliding manner, and a sliding groove matched with the guide rail 1104 is formed in the front surface of the clamping block 1105;
The secondary centering mechanism further comprises a detection mechanism and a pushing piece, the detection mechanism is used for detecting whether the two auxiliary sleeves 10 are attached, the pushing piece is used for pushing the first semicircular ring 1102 and the second semicircular ring 1103 to be combined into a circular ring to rotate, and secondary centering is carried out on a screw nut to be processed;
In the prior art, in order to reduce shielding of a clamping surface, the clamping area is also reduced, but during machining, because of compound grinding, the inner surface and the outer surface of the screw nut are stressed, the clamping is possibly loosened, and the machining precision is affected;
the technical scheme can solve the problems, and the specific mode is as follows:
When two auxiliary sleeves 10 are attached, the detection mechanism obtains information, the information is transmitted to the external controller, the controller transmits a signal to the pushing piece, the pushing piece starts the secondary centering mechanism to perform secondary centering on the screw nut to be processed, when the two auxiliary sleeves 10 are separated, the two sides of the front end of the screw nut can be matched and clamped in the left and right directions, and the backward thrust during partial internal thread processing is offset from the rear, so that the whole clamping is more stable.
As shown in fig. 1 to 11, the detecting mechanism includes two connecting bars 12, the two connecting bars 12 are respectively and fixedly installed in the installation grooves 11 inside the two auxiliary sleeves 10, a third pressure sensor 1201 is fixedly installed on the surface of the connecting bar 12 located at one side, and when the two auxiliary sleeves 10 are attached, the third pressure sensor 1201 is extruded, and signals are transmitted to an external controller.
As shown in fig. 1 to 11, the pushing member includes a centering electric push rod 1301 and a pushing column 13, the centering electric push rod 1301 is fixedly installed on the front end inner wall of the inner installation groove 11 of the auxiliary sleeve 10, the pushing column 13 is slidably connected on the front end inner wall of the inner installation groove 11 of the auxiliary sleeve 10, and the telescopic end of the centering electric push rod 1301 is connected with the pushing column 13;
One side surface of the pushing column 13, which is close to the second semicircular ring 1103, is in meshed connection with the second semicircular ring 1103 through a gear;
It should be noted that, after the external controller receives the signal, the centering electric push rod 1301 pushes the pushing column 13 to move, so that the ring formed by combining the first semicircular ring 1102 and the second semicircular ring 1103 rotates, then the clamping block 1105 is affected by the guide rail 1104, and is close to the outer surface of the screw nut for lamination, and the three clamping blocks 1105 move at the same distance to center the screw nut, so that the deviation of the clamping position at each time is reduced.
In the working process, when the two auxiliary sleeves 10 are attached, the detection mechanism obtains information, the information is transmitted to the external controller, the controller transmits a signal to the pushing piece, the pushing piece starts the secondary centering mechanism to perform secondary centering on the screw nut to be processed, when the two auxiliary sleeves 10 are separated, the two sides of the front end of the screw nut can be matched and clamped from the left and right directions, and a part of backward thrust during internal thread processing is offset from the rear, so that the whole clamping is more stable;
after the connected controller receives the signal, the centering electric push rod 1301 pushes the pushing column 13 to move, so that the ring formed by combining the first semicircular ring 1102 and the second semicircular ring 1103 rotates, then the clamping blocks 1105 are affected by the guide rails 1104, and the clamping blocks are close to the outer surface of the lead screw nut, and the lead screw nut is centered due to the fact that the moving distances of the three clamping blocks 1105 are the same, so that deviation of the clamping positions at each time is reduced.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments shown in fig. 1 to 11, and that the embodiments and descriptions shown in fig. 1 to 11 are merely illustrative of the principles of the present invention, and that various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A high-precision ball screw nut compound grinding device is characterized in that: comprising the following steps:
A mounting base (1); the front end of the upper surface of the mounting base (1) is fixedly connected with a second mounting table (102), and the rear end of the upper surface of the mounting base (1) is fixedly connected with a first mounting table (101);
the clamping mechanism is arranged at the rear end of the upper surface of the second mounting table (102) and is used for clamping and fixing a screw nut to be processed;
the inner grinding mechanism is arranged at the front end of the upper surface of the second mounting table (102) and is used for carrying out inner thread machining on the inner side surface of the screw nut to be machined;
an external grinding mechanism which is mounted on the upper surface of the first mounting table (101) and is used for grinding the outer side surface of the screw nut to be processed;
The auxiliary mechanism is arranged on the upper surface of the second mounting table (102), is positioned behind the clamping mechanism and is used for assisting in position adjustment of a screw nut to be processed before clamping;
The auxiliary mechanism comprises a sliding base (9) and a fourth driving piece for driving the sliding base (9) to move forwards and backwards, a sliding groove (602) is formed in the upper surface of the second mounting table (102), a sliding block (603) is connected in the sliding groove (602) in a sliding mode, the lower surface of the sliding base (9) is fixedly connected with the sliding block (603), and a connecting plate (604) is fixedly connected with the lower end of the sliding block (603);
The device further comprises a triggering mechanism, wherein the triggering mechanism comprises a first pressure sensor (7), a second pressure sensor (701) and a rear baffle plate (601), the first pressure sensor (7) is fixedly arranged on the rear surface of the connecting plate (604), the second pressure sensor (701) is fixedly arranged on the front surface of the connecting plate (604), and the rear baffle plate (601) is fixedly arranged on the lower surface of the second mounting table (102) at a position right behind the connecting plate (604);
The fourth driving piece comprises a pushing air cylinder (6), the pushing air cylinder (6) is fixedly arranged on the lower surface of the second mounting table (102), and the telescopic end of the pushing air cylinder (6) is fixedly connected with the connecting plate (604);
transverse sliding grooves (902) are formed in two sides of the upper surface of the sliding base (9), auxiliary sleeves (10) are connected in the transverse sliding grooves (902) in a sliding mode, and transverse electric push rods (903) used for driving the auxiliary sleeves (10) to move are further arranged in the transverse sliding grooves (902);
the two auxiliary sleeves (10) are internally provided with secondary centering mechanisms;
The secondary centering mechanism comprises a mounting groove (11), the mounting groove (11) is formed in the two auxiliary sleeves (10), a first semicircular ring (1102) and a second semicircular ring (1103) are respectively connected in the two auxiliary sleeves (10) in a rotating mode, and the first semicircular ring (1102) and the second semicircular ring (1103) are combined into a complete circular ring through a sliding block sliding groove;
The rear surfaces of the first semicircular ring (1102) and the second semicircular ring (1103) are fixedly provided with a guide rail (1104) in a vortex-shaped line shape;
The mounting grooves (11) in the two auxiliary sleeves (10) are combined into a complete circular groove, an inner fixing plate (1101) is arranged in an inner circumference array of the mounting grooves (11), the front surface of the inner fixing plate (1101) is connected with a clamping block (1105) in a sliding manner, and a sliding groove matched with the guide rail (1104) is formed in the front surface of the clamping block (1105);
The secondary centering mechanism further comprises a detection mechanism and a pushing piece, wherein the detection mechanism is used for detecting whether the two auxiliary sleeves (10) are attached or not, and the pushing piece is used for pushing the ring formed by combining the first semicircular ring (1102) and the second semicircular ring (1103) to rotate and secondarily center a screw nut to be processed;
The clamping mechanism comprises a lower connecting plate (901) and a second upper mounting plate (201), the lower connecting plate (901) is fixedly mounted on the upper surface of the second mounting table (102), and the second upper mounting plate (201) is fixedly mounted on the upper surface of the second mounting table (102) and is positioned above the lower connecting plate (901);
The upper surface of the lower connecting plate (901) is fixedly provided with a lower clamping plate (205), and the rear surface of the lower clamping plate (205) is provided with a guide rod (207) which is matched with the screw nut to be processed;
The upper surface of the second upper mounting plate (201) is fixedly provided with a clamping cylinder (202), the telescopic end of the clamping cylinder (202) penetrates through the second upper mounting plate (201) to be fixedly connected with an upper clamping plate (203), and the lower surface of the upper clamping plate (203) is fixedly connected with a positioning block (204);
the upper surface of the lower clamping plate (205) is provided with a positioning groove (206) which is matched with the positioning block (204).
2. The high-precision ball screw nut compound grinding device according to claim 1, wherein: the internal grinding mechanism comprises a driving motor (3), a first upper mounting plate (2) is mounted on the upper surface of the first mounting table (101), an output shaft on the rear surface of the first upper mounting plate (2) is fixedly connected with a tap (301) for grinding internal threads, and a motor mounting plate (402) is fixedly connected to the surface of the driving motor (3);
The lower surface of the motor mounting plate (402) is connected with a sliding seat (4) in a sliding manner, and a first driving piece for driving the motor mounting plate (402) to transversely move is arranged on the left side of the upper surface of the sliding seat (4);
The lower surface of the sliding seat (4) is connected with the second mounting table (102) in a front-back sliding way, and a second driving piece for driving the sliding seat (4) to move back and forth is arranged on the front surface of the sliding seat (4).
3. The high-precision ball screw nut compound grinding device according to claim 2, wherein: the first driving piece is a second telescopic cylinder (403), the telescopic end of the second telescopic cylinder (403) is fixedly connected with the second telescopic cylinder (403), and the fixed end of the second telescopic cylinder (403) is fixedly connected with the sliding seat (4);
The second driving piece is a first telescopic cylinder (401), the telescopic end of the first telescopic cylinder (401) is fixedly connected with the sliding seat (4), and the fixed end of the first telescopic cylinder (401) is fixedly connected with the second mounting table (102).
4. A high precision ball screw nut compound grinding apparatus according to claim 3, characterized in that: the external grinding mechanism comprises a vertical plate (501), wherein the vertical plate (501) is in sliding connection with the lower surface of the first upper mounting plate (2), the rear surface of the vertical plate (501) is fixedly connected with a grinding motor (8), the front surface of the vertical plate (501) is rotationally connected with a mounting disc (801), and the front surface of the mounting disc (801) is provided with a grinding rod (802) for grinding the outer surface of the screw nut to be processed;
The mounting disc (801) is fixedly connected with an output shaft of the grinding motor (8);
a third drive member is also included for driving the riser (501) to move back and forth.
5. The high-precision ball screw nut compound grinding device according to claim 4, wherein: the third driving piece comprises a rotating motor (5) and a screw rod (502), the rotating motor (5) is fixedly installed at the rear end of the lower surface of the first upper mounting plate (2), the screw rod (502) is fixedly connected with the front end output shaft of the first upper mounting plate (2), and the screw rod (502) is in threaded connection with the vertical plate (501).
6. The high-precision ball screw nut compound grinding device according to claim 5, wherein: the detection mechanism comprises two connecting strips (12), the two connecting strips (12) are respectively and fixedly arranged in the mounting grooves (11) in the two auxiliary sleeves (10), and a third pressure sensor (1201) is fixedly arranged on the surface of the connecting strip (12) at one side.
7. The high-precision ball screw nut compound grinding device according to claim 6, wherein: the pushing piece comprises a centering electric push rod (1301) and a pushing column (13), the centering electric push rod (1301) is fixedly arranged on the inner wall of the front end of the mounting groove (11) in the auxiliary sleeve (10), the pushing column (13) is slidably connected on the inner wall of the front end of the mounting groove (11) in the auxiliary sleeve (10), and the telescopic end of the centering electric push rod (1301) is connected with the pushing column (13);
One side surface of the pushing column (13) close to the second semicircular ring (1103) is in meshed connection with the second semicircular ring (1103) through a gear.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311582504.4A CN117381080B (en) | 2023-11-24 | 2023-11-24 | High-precision ball screw nut compound grinding device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311582504.4A CN117381080B (en) | 2023-11-24 | 2023-11-24 | High-precision ball screw nut compound grinding device |
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| CN117381080A CN117381080A (en) | 2024-01-12 |
| CN117381080B true CN117381080B (en) | 2024-06-11 |
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| CN202311582504.4A Active CN117381080B (en) | 2023-11-24 | 2023-11-24 | High-precision ball screw nut compound grinding device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117798819B (en) * | 2024-03-01 | 2024-05-07 | 江苏通压压缩机有限公司 | Tool fixture for screw machining of screw compressor |
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| GB1373471A (en) * | 1972-01-19 | 1974-11-13 | Seiko Seiki Kk | Grinding machine |
| EP0257194A2 (en) * | 1986-08-26 | 1988-03-02 | Buderus Schleiftechnik GmbH | Grinding machine for automatically grinding internal or external cylindrical surfaces, plane surfaces and/or internal and external threads |
| JPH0671560A (en) * | 1992-08-26 | 1994-03-15 | S M W Japan:Kk | Automatic centering and center rest device for cylindrical grinding of long work and grinding method therewith |
| CN210615399U (en) * | 2019-08-20 | 2020-05-26 | 南通江海金属科技发展有限公司 | Thread forming device is used in copper nut processing |
| CN112676657A (en) * | 2020-12-15 | 2021-04-20 | 芜湖旭能自动化设备设计有限公司 | Ball screw nut composite grinding device |
| CN216858499U (en) * | 2022-04-06 | 2022-07-01 | 杭州富鑫精密机械有限公司 | Propulsion device for screw machining |
| CN115091286A (en) * | 2022-08-29 | 2022-09-23 | 潍坊亚冠动力科技有限公司 | Auxiliary clamping device for machining generator rotor shaft |
| WO2022222280A1 (en) * | 2021-04-22 | 2022-10-27 | 中北大学 | Rotary ultrasonic grinding machine tool and application |
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2023
- 2023-11-24 CN CN202311582504.4A patent/CN117381080B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1373471A (en) * | 1972-01-19 | 1974-11-13 | Seiko Seiki Kk | Grinding machine |
| EP0257194A2 (en) * | 1986-08-26 | 1988-03-02 | Buderus Schleiftechnik GmbH | Grinding machine for automatically grinding internal or external cylindrical surfaces, plane surfaces and/or internal and external threads |
| JPH0671560A (en) * | 1992-08-26 | 1994-03-15 | S M W Japan:Kk | Automatic centering and center rest device for cylindrical grinding of long work and grinding method therewith |
| CN210615399U (en) * | 2019-08-20 | 2020-05-26 | 南通江海金属科技发展有限公司 | Thread forming device is used in copper nut processing |
| CN112676657A (en) * | 2020-12-15 | 2021-04-20 | 芜湖旭能自动化设备设计有限公司 | Ball screw nut composite grinding device |
| WO2022222280A1 (en) * | 2021-04-22 | 2022-10-27 | 中北大学 | Rotary ultrasonic grinding machine tool and application |
| CN216858499U (en) * | 2022-04-06 | 2022-07-01 | 杭州富鑫精密机械有限公司 | Propulsion device for screw machining |
| CN115091286A (en) * | 2022-08-29 | 2022-09-23 | 潍坊亚冠动力科技有限公司 | Auxiliary clamping device for machining generator rotor shaft |
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|---|---|
| CN117381080A (en) | 2024-01-12 |
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