CN111168487B - Numerical control thread grinder - Google Patents
Numerical control thread grinder Download PDFInfo
- Publication number
- CN111168487B CN111168487B CN202010040123.3A CN202010040123A CN111168487B CN 111168487 B CN111168487 B CN 111168487B CN 202010040123 A CN202010040123 A CN 202010040123A CN 111168487 B CN111168487 B CN 111168487B
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- moving platform
- mounting table
- axis
- grinding wheel
- positioning
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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
- B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
- B24B3/18—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of taps or reamers
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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
- B24B41/007—Weight compensation; Temperature compensation; Vibration damping
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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
- B24B41/02—Frames; Beds; Carriages
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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
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/061—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically
- B24B41/062—Work supports, e.g. adjustable steadies axially supporting turning workpieces, e.g. magnetically, pneumatically between centres; Dogs
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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
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
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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
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/06—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels
- B24B53/075—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels for workpieces having a grooved profile, e.g. gears, splined shafts, threads, worms
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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
- B24B55/06—Dust extraction equipment on grinding or polishing machines
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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
- B24B55/12—Devices for exhausting mist of oil or coolant; Devices for collecting or recovering materials resulting from grinding or polishing, e.g. of precious metals, precious stones, diamonds or the like
Abstract
The invention discloses a numerical control thread grinding machine, which relates to the field of screw tap production and comprises a machine body, wherein the upper end surface of the machine body is connected with a sliding plate in a sliding manner along the horizontal direction, a clamping component is arranged on the sliding plate, the upper end surface of the machine body is also provided with an XY-axis moving platform, the XY-axis moving platform is positioned at the rear side of the sliding plate, the X direction of the XY-axis moving platform is parallel to the moving direction of the sliding plate, the upper end surface of the XY-axis moving platform is provided with an installation platform, a processing component is arranged on the installation platform, and the processing component comprises a grinding wheel and a processing motor which are rotationally; the mounting table is hinged to the XY-axis moving platform, the hinge axis of the mounting table is arranged in parallel to the Y direction, the rotation axis of the grinding wheel is arranged perpendicular to the hinge axis of the mounting table, and a driving assembly is hinged between the upper end of the XY-axis moving platform and the mounting table. The installation table and the driving assembly are arranged, so that the numerical control thread grinding machine can machine screw taps with different spiral angles, and the machining range is larger.
Description
Technical Field
The invention relates to the field of screw tap production, in particular to a numerical control thread grinding machine.
Background
A thread grinder is a threading machine for machining a precise thread using a formed grinding wheel as a grinding tool. In the production of a screw tap, the screw tap is usually processed by thread grinding machine.
For example, chinese patent No. CN103464837A discloses a numerically controlled thread grinder, which includes a lathe bed, a first slide plate and a second slide plate, the first slide plate is provided with a clamping structure for clamping a workpiece, the clamping structure includes a main spindle box and a chuck driven by a first driving motor, the chuck is provided on the main spindle box, an axis of the chuck is parallel to a transverse guide rail, and the workpiece is inserted into the chuck and is coaxially disposed with the chuck. The lathe is provided with a longitudinal guide rail, the lathe body is provided with a longitudinal driving motor for driving the sliding plate II to move along the longitudinal guide rail, and the lathe body is provided with a grating ruler.
As shown in FIG. 1, the two axial ends of the existing workpiece are coaxially provided with positioning grooves 21, and the tail end of the workpiece comprises a square column 22.
When the thread grinding machine is adopted, because the angle of the grinding wheel is fixed, when the screw tap is machined, only the screw tap with the spiral angle corresponding to the grinding wheel can be machined, and when the spiral angle of the screw tap is required to be machined, the screw tap cannot be machined by the thread grinding machine and needs to be improved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the numerical control thread grinding machine which has the advantage of being capable of machining screw taps with different spiral angles.
In order to achieve the purpose, the invention provides the following technical scheme:
a numerical control thread grinder comprises a grinder body, wherein the upper end face of the grinder body is connected to a sliding plate in a sliding mode along the horizontal direction, a clamping assembly used for clamping a workpiece is arranged on the sliding plate, an XY-axis moving platform is further arranged on the upper end face of the grinder body and is positioned on the rear side of the sliding plate, the X-axis direction of the XY-axis moving platform is parallel to the moving direction of the sliding plate, an installation table is further arranged on the upper end face of the XY-axis moving platform, a machining assembly is arranged on the installation table, and the machining assembly comprises a grinding wheel rotatably connected to the installation table and a machining motor arranged on the installation table and used for driving the grinding wheel to rotate; the grinding wheel grinding machine is characterized in that the mounting table is hinged to the XY-axis moving platform, the hinge axis of the mounting table is arranged in a direction parallel to the Y axis, the rotation axis of the grinding wheel is arranged perpendicular to the hinge axis of the mounting table, and a driving assembly for adjusting the turnover angle of the mounting table is hinged between the upper end of the XY-axis moving platform and the mounting table.
Through the technical scheme, the driving assembly can be used for driving the mounting table to overturn along the hinge axis of the mounting table, so that the angle of the grinding wheel is adjustable, the inclination of the grinding wheel relative to the axial direction of a workpiece is adjustable, and the inclination of the grinding wheel can be adjusted according to the requirements of spiral angles of different screw taps. Through setting up mount table and drive assembly for the screw tap that the helix angle is different can be processed to the numerically controlled thread grinder, makes holistic range of processing bigger.
The present invention in a preferred example may be further configured to: the driving assembly comprises an installation cylinder hinged on the installation platform, a rotating part coaxially rotatably connected to the installation cylinder far away from one end of the installation platform, and a lead screw hinged to the upper end of the XY-axis moving platform and connected with the installation cylinder in a sliding mode, the axis of the lead screw is overlapped with the rotating axis of the rotating part, and the lead screw is in threaded connection with the rotating part.
Through the technical scheme, when the angle of the mounting table needs to be adjusted, the screw rod extends out or retracts through rotating the rotating part, the whole length of the adjusting assembly can be changed through the movement of the screw rod at the moment, the mounting table is turned over along the hinge axis of the mounting table, and the mounting table is adjusted more conveniently through rotating the rotating part.
The present invention in a preferred example may be further configured to: the driving assembly comprises an installation cylinder hinged to the installation platform, a lead screw hinged to the upper end of the XY-axis moving platform and connected with the installation cylinder in a sliding mode, and a bevel gear rotatably connected into the installation cylinder and in threaded connection with the lead screw, wherein a plurality of adjusting holes are formed in the outer side wall of the installation cylinder, and the adjusting holes are used for enabling a tool to extend or retract through driving the bevel gear to rotate.
Through the technical scheme, when the angle of the mounting table needs to be adjusted, the screwing tool corresponding to the bevel gear is correspondingly inserted into the adjusting hole to be meshed with the bevel gear, then the screwing tool is rotated to enable the bevel gear to rotate along the axis of the screw rod, and the screw rod can be driven to extend or retract by the rotation of the bevel gear, so that the angle of the mounting table is adjusted. In addition, the bevel gear is rotationally connected in the mounting table, so that the influence of external collision on the rotation of the bevel gear is reduced, and the state of the driving assembly is more stable.
The present invention in a preferred example may be further configured to: the mounting table is in threaded connection with a positioning bolt along the side wall of the end of a hinged axis of the mounting table, a guide plate is further fixed at the upper end of the XY axis moving platform, and a guide hole for the positioning bolt to pass through is formed in the guide plate.
Through above-mentioned technical scheme, set up deflector, guiding hole and positioning bolt, after the mount table upset to the angle of needs, can screw up positioning bolt and make positioning bolt support tightly and fix in the terminal surface of deflector to further fix a position the mount table, make the location behind the mount table angle of adjustment more stable.
The present invention in a preferred example may be further configured to: the clamping assembly comprises a positioning piece and a clamping piece which are distributed on the upper end surface of the sliding plate along the X-axis direction, the positioning piece comprises a positioning seat fixed on the upper end surface of the sliding plate and a positioning thimble rotatably connected to the positioning seat, and the positioning thimble is arranged towards the direction of the clamping piece; the holder is including being fixed in the grip slipper on the slide board, rotating the centre gripping thimble of connecting on the grip slipper, rotating the centre gripping unit of connecting on the grip slipper, centre gripping thimble and centre gripping unit all set up towards the setting element direction, the axis of rotation coincidence setting of centre gripping unit, centre gripping thimble and location thimble, still be provided with drive centre gripping unit pivoted driving motor on the grip slipper.
Through the technical scheme, when the workpiece is installed, the workpiece is placed between the positioning piece and the clamping piece and is jacked into the positioning grooves at the two ends of the workpiece through the positioning thimble and the clamping thimble, the workpiece is initially positioned, and then the workpiece is further clamped through the clamping unit, so that the workpiece and the clamping unit are kept rotating synchronously. At the moment, when the workpiece needs to be ground, the driving motor drives the clamping unit to rotate so that the workpiece can rotate synchronously, and the sliding plate moves correspondingly while the workpiece rotates, so that the grinding wheel can process the workpiece, and the whole processing is more stable.
The present invention in a preferred example may be further configured to: the clamping unit comprises a clamping block which is rotatably connected onto the clamping seat, a loop bar which is arranged on the clamping block and used for being sleeved on the workpiece to perform circumferential positioning on the workpiece, a positioning groove for embedding one end of the loop bar is formed in the clamping block, and a fastening bolt for fixing the loop bar is connected onto the clamping block in a threaded manner.
Through the technical scheme, when a workpiece is required to be clamped, the sleeve rod is sleeved with the square column corresponding to the tail end of the workpiece, then the sleeve rod is correspondingly embedded into the positioning groove and is screwed and fixed through the fastening bolt, and therefore the workpiece and the clamping block can keep synchronous rotation. Set up the constant head tank and set up the bolt, further fix through setting up the bolt behind the loop bar embedding constant head tank for the centre gripping of centre gripping unit is more stable.
The present invention in a preferred example may be further configured to: the mounting table top still is provided with the emery wheel and repaiies the subassembly, the emery wheel is repaiied the subassembly and is included setting up in the seat of repaieing of mounting table top, rotate and connect the finishing wheel on the seat of repaieing, set up and drive finishing wheel pivoted finishing motor on the seat of repaieing.
Through above-mentioned technical scheme, set up the emery wheel and maintain the subassembly, use when the emery wheel and produce the wearing and tearing back, can maintain the emery wheel through the emery wheel and maintain the subassembly and maintain the emery wheel for the emery wheel keeps comparatively stable cutting ability, thereby makes holistic production more stable.
The present invention in a preferred example may be further configured to: the mounting table is further provided with an adjusting assembly, the adjusting assembly is an XZ shaft moving platform arranged on the mounting table, the trimming seat is fixed on the XZ shaft moving platform, and the adjusting assembly is used for adjusting the position of the trimming wheel.
Through the technical scheme, the position of the grinding wheel trimming component is adjusted through the adjusting component, so that the position of the grinding wheel to be trimmed can be trimmed under more practical conditions, and the grinding wheel trimming component is more flexible to use.
The present invention in a preferred example may be further configured to: the grinding wheel is characterized in that a cover shell is arranged on the dressing wheel, an opening is formed in the lower end of the cover shell, the grinding wheel is correspondingly located below the cover shell, part of the grinding wheel is located in the cover shell, an exhaust pipe is connected to the position, corresponding to the grinding wheel, of the cover shell, and is communicated with an exhaust fan.
Through above-mentioned technical scheme, when the grinding wheel was maintained to the finishing wheel, the exhaust tube can take away the cuttings that produce, reduces the influence of cuttings adhesion grinding wheel surface to machining precision. When the grinding wheel grinds a workpiece, grinding oil is usually sprayed to lubricate and cool the workpiece, the grinding wheel generates heat to enable the grinding oil to form a small part of oil mist, the oil suction pipe can suck and discharge the part of oil mist at the moment, the situation that the oil mist adheres to an upper end component to cause dirt is avoided, and the oil mist discharged by suction is introduced into the oil mist recoverer to convert the oil mist into the grinding oil for recycling. And a housing and an exhaust pipe are arranged, so that the oil mist can be recycled again for reuse.
The present invention in a preferred example may be further configured to: the X-axis moving platform and the Y-axis moving platform are connected above the X-axis moving platform in a sliding mode, the X-axis moving platform and the Y-axis moving platform are driven to move through screws, compensating springs are further arranged on two sides of the Y-axis moving platform in the sliding direction, the compensating springs extend downwards in an inclined mode towards the direction far away from the sliding plate, two ends of each compensating spring are fixedly connected to the X-axis moving platform and the Y-axis moving platform respectively, and two ends of each compensating spring are arranged under the elastic force of each compensating spring in a tension mode.
Through above-mentioned technical scheme, set up compensating spring, compensating spring makes Y moving platform support tightly on the screw rod along the axial to make the cooperation between Y moving platform and the screw rod more stable, reduced the influence of screw rod and Y moving platform's fit clearance to grinding wheel grinding precision, thereby make the machining precision better.
Compared with the prior art, the invention has the beneficial effects that:
(1) by arranging the mounting table and the driving assembly, the numerical control thread grinding machine can process screw taps with different spiral angles, so that the whole processing range is larger;
(2) the positioning of the installation table after the angle is adjusted is more stable by arranging the guide plate, the guide hole and the positioning bolt;
(3) by arranging the housing and the exhaust pipe, the oil mist can be recycled again for reuse;
(4) through setting up compensating spring for the machining precision is better.
Drawings
FIG. 1 is a schematic structural view of a workpiece to be machined;
FIG. 2 is a schematic overall structure diagram according to the first embodiment;
FIG. 3 is a partial schematic structural view of the first embodiment, showing a connection structure of a mounting table and a driving assembly;
FIG. 4 is a schematic cross-sectional view of a drive assembly according to a first embodiment;
FIG. 5 is a partially exploded view of the clamping assembly according to the first embodiment;
FIG. 6 is a schematic partial sectional view of the first embodiment, showing the structure of a grinding wheel dressing assembly;
FIG. 7 is a schematic structural diagram of a driving assembly according to a second embodiment;
fig. 8 is a partial cross-sectional schematic view of a driving assembly according to a second embodiment.
Reference numerals: 1. a bed body; 2. a slide plate; 3. an XY axis moving platform; 31. an X moving platform; 32. a Y moving platform; 4. an installation table; 5. a drive assembly; 51. mounting the cylinder; 52. a rotating part; 53. a screw rod; 54. a bevel gear; 6. positioning the bolt; 7. a guide plate; 8. a clamping assembly; 81. a positioning member; 811. positioning seats; 812. positioning the thimble; 82. a clamping member; 821. a clamping seat; 822. clamping the thimble; 823. a clamping unit; 8231. a clamping block; 8232. a loop bar; 9. processing the assembly; 91. a grinding wheel sheet; 92. processing a motor; 10. a guide hole; 11. positioning a groove; 12. fastening the bolt; 13. a drive motor; 14. a compensation spring; 15. an adjustment assembly; 151. a Z moving platform; 152. an X stage; 16. a grinding wheel dressing assembly; 161. trimming the seat; 162. a dressing wheel; 163. trimming the motor; 17. a housing; 18. an air exhaust pipe; 19. an exhaust fan; 20. an adjustment hole; 21. a positioning groove; 22. a square column.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
The first embodiment is as follows:
a numerical control thread grinder is shown in figure 2 and comprises a grinder body 1, wherein an XY-axis moving platform 3 and a sliding plate 2 are arranged on the upper end face of the grinder body 1. The XY-axis moving platform 3 comprises an X moving platform 31 connected to the upper end face of the bed body 1 in a sliding mode and a Y moving platform 32 connected to the upper portion of the X moving platform 31 in a sliding mode, and the X moving platform 31 and the Y moving platform 32 are driven to move through the rotation of a motor driving screw rod. The sliding plate 2 is located on the front side of the XY-axis moving platform 3, the sliding plate 2 is connected to the lathe bed 1 in a sliding mode along the horizontal direction, and the sliding direction of the sliding plate 2 is parallel to the X-axis direction.
As shown in fig. 3 and 4, the mounting table 4 is further disposed on the upper end surface of the XY-axis moving platform 3, the mounting table 4 is hinged to the XY-axis moving platform 3, and the hinge axis of the mounting table 4 is parallel to the Y-axis direction. A driving component 5 is hinged between the upper end face of the Y moving platform 32 of the XY axis moving platform 3 and the mounting table 4, and the driving component 5 is used for adjusting the overturning angle of the mounting table 4. The driving assembly 5 comprises a mounting cylinder 51 hinged on the mounting table 4, a rotating part 52 coaxially and rotatably connected with one end of the mounting cylinder 51 far away from the mounting table 4, and a screw rod 53 hinged on the upper end of the XY-axis moving platform 3 and connected with the mounting cylinder 51 in a sliding manner. The mount table 4 is generally set by a step-up, the axis of the lead screw 53 is set to coincide with the axis of rotation of the rotating portion 52, and the lead screw 53 is screwed with the rotating portion 52.
The mounting table 4 is connected with a positioning bolt 6 along the side wall of the end of the hinged axis of the mounting table 4 in a threaded manner, and the axis of the positioning bolt 6 is arranged in parallel to the hinged axis of the mounting table 4. The upper end of the XY-axis moving platform 3 is further fixed with a guide plate 7, a guide hole 10 for the positioning bolt 6 to pass through is formed in the guide plate 7, the guide hole 10 is an arc hole, and the axis of the guide hole 10 is overlapped with the hinge axis of the mounting table 4.
When it is desired to adjust the angle of the mounting table 4, the lead screw 53 is extended or retracted by rotating the rotating portion 52, and at this time, the movement of the lead screw 53 causes the overall length of the adjusting assembly 15 to change, thereby turning the mounting table 4 along its hinge axis. After the installation table 4 is turned to a required angle, the positioning bolt 6 can be screwed down to enable the positioning bolt 6 to abut against the end face of the guide plate 7 for fixing, and therefore the installation table 4 is further positioned.
The mounting table 4 is provided with a processing assembly 9, and the processing assembly 9 comprises a grinding wheel 91 rotatably connected to the mounting table 4 and a processing motor 92 arranged on the mounting table 4. The rotation axis of the grinding wheel 91 is perpendicular to the hinge axis of the mounting table 4, and the processing motor 92 drives the grinding wheel 91 to rotate through belt transmission so that the grinding wheel 91 can process a workpiece.
As shown in fig. 2 and 5, the shifting board 2 also moves by the motor driving the screw rod to rotate. The upper end face of the sliding plate 2 is provided with a clamping component 8. The clamping assembly 8 comprises positioning members 81 and clamping members 82 distributed on the upper end surface of the sliding plate 2 along the X moving direction. The positioning member 81 includes a positioning seat 811 fixed on the upper end surface of the sliding plate 2, and a positioning thimble 812 rotatably connected to the positioning seat 811, wherein the positioning thimble 812 is disposed toward the clamping member 82. One end of the positioning seat 811 far away from the clamping piece 82 is detachably connected with a limiting sleeve, and the limiting sleeve is in threaded connection with the positioning seat 811 and used for limiting the positioning thimble 812.
The holder 82 includes a holder 821 fixed to the slide plate 2, a holding pin 822 rotatably connected to the holder 821, and a holding unit 823 rotatably connected to the holder 821. The holding thimble 822 and the holding unit 823 are both disposed toward the positioning member 81, and the rotation axes of the holding unit 823, the holding thimble 822, and the positioning thimble 812 are overlapped. The clamping unit 823 comprises a clamping block 8231 rotatably connected to the clamping seat 821 and a sleeve rod 8232 arranged on the clamping block 8231. One end of the sleeve rod 8232 close to the workpiece is provided with a square hole, and the square hole is used for being sleeved with the square column 22 at the tail end of the workpiece to circumferentially position the workpiece. The clamping block 8231 is provided with a positioning groove 11 for embedding one end of the loop bar 8232, the clamping block 8231 is further in threaded connection with a fastening bolt 12, and after one end of the loop bar 8232 is embedded into the positioning groove 11, the loop bar 8232 is fixed by screwing the fastening bolt 12. The holding base 821 is further provided with a driving motor 13, the driving motor 13 is located at one end of the holding base 821 far away from the positioning element 81, a speed reduction gear set is arranged in the holding base 821, and the driving motor 13 drives the holding base 821 of the holding unit 823 to rotate along the axis of the holding thimble 822 through the transmission of the speed reduction gear set.
When a workpiece is installed, the limiting sleeve is firstly detached to enable the positioning thimble 812 to move axially, then the workpiece is placed between the positioning piece 81 and the clamping piece 82, then the limiting sleeve is screwed in to limit the positioning thimble 812, and the positioning thimble 812 and the clamping thimble 822 are pushed into the positioning grooves 21 corresponding to two ends of the workpiece to initially position the workpiece. Then the workpiece is further clamped by the clamping unit 823, so that the loop bar 8232 is sleeved with the workpiece and then embedded into the positioning groove 11 to be fixed by the fastening bolt 12, and the workpiece and the clamping unit 823 rotate synchronously. At this moment, when the workpiece needs to be ground, the machining motor 92 drives the grinding wheel 91 to rotate at a high speed, the grinding wheel 91 is moved to a required position through the XY moving platform 32, then the driving motor 13 drives the clamping unit 823 to rotate so that the workpiece rotates synchronously, and when the workpiece rotates, the sliding plate 2 correspondingly moves so that the workpiece moves along the X-axis direction, and the grinding wheel 91 can finish grinding machining on the workpiece in the process.
The Y moving platform 32 is further provided with compensation springs 14 on two sides along the sliding direction, the compensation springs 14 extend downwards in an inclined manner in the direction away from the sliding plate 2, two ends of the compensation springs 14 are respectively and fixedly connected to the X moving platform 31 and the Y moving platform 32, and two ends of the compensation springs 14 are arranged in a tension manner under the elastic force of the compensation springs 14. The compensation spring 14 enables the Y moving platform 32 to be tightly abutted to the screw rod along the axial direction, so that the matching between the Y moving platform 32 and the screw rod is more stable, and the influence of the matching gap between the screw rod and the Y moving platform 32 on the grinding precision of the grinding wheel 91 is reduced.
As shown in fig. 2 and 6, the mounting table 4 is further provided with an adjusting assembly 15, and the adjusting assembly 15 is an XZ axis moving platform provided on the mounting table 4. The XZ-axis moving platform includes a Z-moving platform 151 slidably connected to the mounting table 4 in the vertical direction and an X-platform 152 slidably connected to a front end surface of the Z-moving platform 151 in the X-axis direction. The X platform 152 and the Z moving platform 151 are driven to move by corresponding motor-driven screws. The front end surface of the X-stage 152 is provided with a wheel truing assembly 16, and the wheel truing assembly 16 is disposed above the mounting table 4. The grinding wheel dressing assembly 16 includes a dressing base 161 disposed on the front end surface of the X-stage 152 and located above the mounting table 4, a dressing wheel 162 rotatably connected to the dressing base 161, and a dressing motor 163 disposed on the dressing base 161 for driving the dressing wheel 162 to rotate. When the grinding wheel 91 is worn by use, the grinding wheel 91 can be dressed by rotating the dressing wheel 162 of the grinding wheel dressing assembly 16.
The trimming wheel 162 is arranged above the grinding wheel 91, the cover 17 is arranged on the trimming wheel 162, the lower end of the cover 17 is provided with an opening, and the grinding wheel 91 is correspondingly arranged below the cover 17 and partially arranged in the cover 17. The contact part of the shell 17 corresponding to the grinding wheel 91 and the finishing wheel 162 is connected with an air exhaust pipe 18, the air exhaust pipe 18 is a hose, the air exhaust pipe 18 is communicated with an exhaust fan 19, and an exhaust port of the exhaust fan 19 can also be used for being communicated with an oil mist recoverer. The oil mist recoverer is used for collecting oil mist, water mist or dust generated in machining, removing harmful substances in the oil mist recoverer, recycling substances with recycling value such as metal cutting oil and the like through multi-stage interception and filtration, and finally discharging clean gas.
The adjusting assembly 15 can adjust the position of the grinding wheel 91 of the grinding wheel dressing assembly 16, so that the position of the grinding wheel 91 needing dressing can be dressed more practically. When the trimming wheel 162 trims the grinding wheel 91, the suction pipe 18 can suck the generated powder, so that the influence of the powder adhering to the surface of the grinding wheel 91 on the machining precision is reduced.
In addition, when the grinding wheel 91 grinds a workpiece, grinding oil is usually sprayed for lubrication and cooling, the grinding wheel 91 generates heat during grinding, so that the grinding oil can form a small part of oil mist, the oil mist can be sucked and discharged by the air exhaust pipe 18 at the moment, the situation that the oil mist is dirty due to the fact that the oil mist is adhered to an upper end component is avoided, and meanwhile, the sucked and discharged oil mist is introduced into the oil mist recovery device to be converted into the grinding oil mist to be recovered and reused.
The working principle of the embodiment is as follows:
when the numerical control thread grinding machine is used for machining the screw tap, the screw tap is clamped and positioned through the clamping assembly 8, then the driving assembly 5 drives the mounting table 4 to turn over, so that the grinding wheel piece 91 is adjusted to be inclined as required, and then the grinding wheel piece 91 is driven to move through the XY moving platform 32, so that the grinding wheel piece 91 moves to the position for grinding a workpiece. Then, the machining motor 92 is started to drive the grinding wheel 91 to rotate at a high speed, then the driving motor 13 drives the workpiece to rotate slowly, and meanwhile, the sliding plate 2 moves along the X-axis direction in cooperation with the rotation speed of the workpiece, so that the workpiece is ground and machined through the grinding wheel 91.
Example two:
a numerical control thread grinder is different from the first embodiment in the structure of a driving assembly 5.
As shown in fig. 7 and 8, the driving assembly 5 includes a mounting cylinder 51 hinged on the mounting table 4, a screw 53 hinged on the upper end of the XY-axis moving platform 3 and slidably connected with the mounting cylinder 51, and a bevel gear 54 rotatably connected in the mounting cylinder 51 and in threaded connection with the screw 53. The bevel gear 54 can coaxially rotate relative to the mounting cylinder 51 but cannot move relative to the mounting cylinder 51, a plurality of adjusting holes 20 are formed in the outer side wall of the mounting cylinder 51, and the adjusting holes 20 are used for enabling a tool to extend or retract through driving the bevel gear 54 to rotate so as to enable the screw rod 53 to extend or retract.
When the angle of the mounting table 4 needs to be adjusted, the corresponding screwing tool of the corresponding bevel gear 54 is correspondingly inserted into the adjusting hole 20 to be meshed with the bevel gear 54, then the bevel gear 54 rotates along the axis of the screw 53 by rotating the screwing tool, and the rotation of the bevel gear 54 can drive the screw 53 to extend or retract, so that the angle of the mounting table 4 is adjusted. By rotatably connecting the bevel gear 54 to the mounting table 4, the influence of external impact on the rotation of the bevel gear 54 is reduced, and the state of the driving assembly 5 is more stable.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (10)
1. A numerical control thread grinder comprises a grinder body (1), wherein the upper end surface of the grinder body (1) is connected with a sliding plate (2) in a sliding manner along the horizontal direction, a clamping component (8) for clamping a workpiece is arranged on the sliding plate (2), the upper end surface of the lathe bed (1) is also provided with an XY-axis moving platform (3), the XY-axis moving platform (3) is positioned at the rear side of the sliding plate (2), the X-axis direction of the XY-axis moving platform (3) is arranged in parallel to the moving direction of the sliding plate (2), the upper end surface of the XY axis moving platform (3) is also provided with a mounting table (4), the mounting table (4) is provided with a processing assembly (9), the processing assembly (9) comprises a grinding wheel (91) which is rotatably connected to the mounting table (4) and a processing motor (92) which is arranged on the mounting table (4) and drives the grinding wheel (91) to rotate; the method is characterized in that: the grinding wheel grinding machine is characterized in that the mounting table (4) is hinged to the XY-axis moving platform (3), the hinge axis of the mounting table (4) is parallel to the Y-axis direction, the rotation axis of the grinding wheel (91) is perpendicular to the hinge axis of the mounting table (4), and a driving assembly (5) for adjusting the turning angle of the mounting table (4) is hinged between the upper end of the XY-axis moving platform (3) and the mounting table (4).
2. A numerically controlled thread grinding machine as in claim 1, wherein: the driving assembly (5) comprises an installation cylinder (51) hinged to the installation platform (4), a rotating part (52) coaxially connected to the installation cylinder (51) in a rotating mode and far away from one end of the installation platform (4), and a screw rod (53) hinged to the upper end of the XY-axis moving platform (3) and connected with the installation cylinder (51) in a sliding mode, the axis of the screw rod (53) is overlapped with the rotating axis of the rotating part (52), and the screw rod (53) is in threaded connection with the rotating part (52).
3. A numerically controlled thread grinding machine as in claim 1, wherein: the driving assembly (5) comprises an installation cylinder (51) hinged to the installation platform (4), a screw rod (53) hinged to the upper end of the XY-axis moving platform (3) and connected with the installation cylinder (51) in a sliding mode, and a bevel gear (54) rotatably connected into the installation cylinder (51) and in threaded connection with the screw rod (53), a plurality of adjusting holes (20) are formed in the outer side wall of the installation cylinder (51), and the adjusting holes (20) are used for enabling a tool to extend out or retract through driving the bevel gear (54) to rotate so that the screw rod (53) can extend out or retract.
4. A numerically controlled thread grinding machine as in claim 2 or 3, wherein: the mounting table (4) is in threaded connection with a positioning bolt (6) along the side wall of the end of a hinged axis, a guide plate (7) is further fixed at the upper end of the XY-axis moving platform (3), and a guide hole (10) for the positioning bolt (6) to pass through is formed in the guide plate (7).
5. A numerically controlled thread grinding machine as in claim 1, wherein: the clamping assembly (8) comprises a positioning part (81) and a clamping part (82) which are distributed on the upper end face of the sliding plate (2) along the X-axis direction, the positioning part (81) comprises a positioning seat (811) fixed on the upper end face of the sliding plate (2) and a positioning thimble (812) rotatably connected to the positioning seat (811), and the positioning thimble (812) is arranged towards the clamping part (82); holder (82) including be fixed in holder (821) on slide plate (2), rotate centre gripping thimble (822) of connecting on holder (821), rotate and connect in the centre gripping unit (823) on holder (821), centre gripping thimble (822) and centre gripping unit (823) all set up towards setting element (81) direction, the rotation axis coincidence setting of centre gripping unit (823), centre gripping thimble (822) and location thimble (812), still be provided with drive clamping unit (823) pivoted driving motor (13) on holder (821).
6. A numerically controlled thread grinding machine as in claim 5, wherein: the clamping unit (823) includes that rotate the grip block (8231) of connecting on grip slipper (821), set up on grip block (8231) and be used for the cover to establish loop bar (8232) that carry out circumference location to the work piece on the work piece, set up constant head tank (11) that supply loop bar (8232) one end embedding on grip block (8231), it has fastening bolt (12) that are used for fixed loop bar (8232) still threaded connection on grip block (8231).
7. A numerically controlled thread grinding machine as in claim 1, wherein: the grinding wheel dressing device is characterized in that a grinding wheel dressing assembly (16) is further arranged above the mounting table (4), and the grinding wheel dressing assembly (16) comprises a dressing seat (161) arranged above the mounting table (4), a dressing wheel (162) rotatably connected onto the dressing seat (161), and a dressing motor (163) arranged on the dressing seat (161) and used for driving the dressing wheel (162) to rotate.
8. A numerically controlled thread grinding machine as in claim 7, wherein: still be provided with adjusting part (15) on mount table (4), adjusting part (15) are the XZ axle moving platform who sets up on mount table (4), on finishing seat (161) were fixed in XZ axle moving platform, adjusting part (15) were used for adjusting the position of finishing wheel (162).
9. A numerically controlled thread grinding machine as in claim 7, wherein: the grinding wheel trimming device is characterized in that a cover shell (17) is arranged on the trimming wheel (162), an opening is formed in the lower end of the cover shell (17), the grinding wheel (91) is correspondingly located below the cover shell (17) and is partially located in the cover shell (17), an air exhaust pipe (18) is connected to the contact position of the grinding wheel (91) and the trimming wheel (162) corresponding to the cover shell (17), and the air exhaust pipe (18) is communicated to an exhaust fan (19).
10. A numerically controlled thread grinding machine as in claim 1, wherein: XY axle moving platform (3) include X moving platform (31), slide and connect in Y moving platform (32) of X moving platform (31) top, X moving platform (31) and Y moving platform (32) all drive the removal through the screw rod, Y moving platform (32) still are provided with compensating spring (14) on its sliding direction's both sides, compensating spring (14) are towards the direction slope downwardly extending who keeps away from sliding plate (2), the both ends of compensating spring (14) respectively fixed connection in on X moving platform (31) and the Y moving platform (32), the both ends of compensating spring (14) are drawn the power setting under compensating spring (14)'s elastic force.
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| CN202010040123.3A CN111168487B (en) | 2020-01-15 | 2020-01-15 | Numerical control thread grinder |
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| CN202010040123.3A CN111168487B (en) | 2020-01-15 | 2020-01-15 | Numerical control thread grinder |
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| CN111168487B true CN111168487B (en) | 2020-11-27 |
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| CN113427363B (en) * | 2021-08-26 | 2021-11-19 | 常州市尚拓工具科技有限公司 | Pressing pliers grinding device and production process thereof |
| CN113427364B (en) * | 2021-08-26 | 2021-11-19 | 常州市尚拓工具科技有限公司 | Strong pressing pliers grinding device |
| CN113977408A (en) * | 2021-11-23 | 2022-01-28 | 沈阳天贺新材料开发有限公司 | Grinding machine for processing root canal file needle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB464332A (en) * | 1935-08-02 | 1937-04-12 | Herbert Lindner | Improvements relating to machine tools more particularly thread-grinding machines |
| JP3146683U (en) * | 2008-08-27 | 2008-11-27 | 元祿亦有限公司 | Screw tap polishing equipment |
| CN201342595Y (en) * | 2009-02-20 | 2009-11-11 | 济南轨道交通装备有限责任公司 | Spiral tap sharpening device |
| CN202106304U (en) * | 2011-04-25 | 2012-01-11 | 广州市敏嘉制造技术有限公司 | Grinding wheel angle adjusting mechanism of numerically controlled grinder |
| CN203448798U (en) * | 2013-09-22 | 2014-02-26 | 台州瓦尔特工具制造有限公司 | Numerical control screw grinder |
| CN105215484A (en) * | 2015-09-24 | 2016-01-06 | 上海大学 | A kind of internal thread grinding machine grinding carriage dip angle adjusting mechanism |
| CN207746505U (en) * | 2018-01-23 | 2018-08-21 | 重庆盛泰益模具有限公司 | A kind of screw grinder of multi-functional adjustable length |
| CN208906424U (en) * | 2018-09-25 | 2019-05-28 | 浙江美日智能装备有限公司 | Screw tap angle lap machine |
| CN109397093A (en) * | 2018-12-21 | 2019-03-01 | 广东豪特曼智能机器有限公司 | It is a kind of with the CNC CNC grinder for external thread for repairing sand function automatically |
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