CN109604641B - Lathe for positioning cutting - Google Patents
Lathe for positioning cutting Download PDFInfo
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- CN109604641B CN109604641B CN201910089449.2A CN201910089449A CN109604641B CN 109604641 B CN109604641 B CN 109604641B CN 201910089449 A CN201910089449 A CN 201910089449A CN 109604641 B CN109604641 B CN 109604641B
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- sliding base
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B25/00—Accessories or auxiliary equipment for turning-machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
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Abstract
The invention provides a lathe for positioning cutting, which comprises a sliding plate and a moving assembly, wherein the moving assembly comprises a sliding base, a limiting mechanism and a stroke limiting assembly, the sliding base is slidably arranged on the sliding plate, the limiting mechanism comprises a moving base arranged on the sliding base, an adjusting wedge, a pushing wedge, an elastic part and a limiting screw, the adjusting wedge is attached to the inclined surface of the pushing wedge, the elastic part is telescopically arranged between the pushing wedge and the moving base, the stroke limiting assembly comprises a sensor assembly, the sensor assembly is arranged on the sliding base, a fixed block is fixed on the sliding plate, the sensor assembly is far away from or close to the fixed block when the sliding base moves on the sliding plate, the stroke limiting assembly is used for controlling the moving stroke of the sliding base, meanwhile, the limiting mechanism is matched for limiting the moving stroke of the sliding base, and the purpose of automatic tool retracting of the lathe is finally achieved, so that the phenomenon that the lathe collides when the lathe retracts after the product is machined is prevented.
Description
Technical Field
The invention relates to the technical field of lathe machining, in particular to a lathe for positioning cutting.
Background
The bearing is an important part in the modern mechanical equipment, and the inner ring and the outer ring of the bearing need to be processed in the production process of the bearing. When the inner ring and the outer ring of the bearing are machined, the bearing to be machined needs to be installed on a lathe to rotate, and a turning tool is longitudinally fed to turn the bearing to be machined in the rotating process of the bearing to be machined.
In the process of continuously rotating the bearing to be machined, if the turning tool stops feeding, the radiuses from all the turning positions of the turning tool to the circle center are the same, and the roundness of the machined bearing is good; if the turning tool is continuously fed, the radiuses from all the positions turned by the turning tool to the circle center are different, and the roundness of the machined bearing is poor.
In the prior art, in order to ensure the roundness of an inner ring or an outer ring of a bearing to be processed, a turning tool stays for a period of time when the turning tool is longitudinally fed to reach a turning size, so that the radiuses from all positions turned by the turning tool to the circle center are the same, and the roundness of the inner ring or the outer ring of the bearing to be processed is improved; however, in this turning mode, the operation in which the turning tool stays for a certain period of time while the turning tool is fed to reach the turning size slows down the machining speed of the bearing.
Disclosure of Invention
In order to solve the problem that the long-time stay of a turning tool slows down the processing speed of a part in a turning mode in the prior art, the embodiment of the invention provides a lathe for positioning cutting, which comprises a sliding plate and a moving assembly arranged on the sliding plate and used for bearing a tool rest, wherein the moving assembly comprises a sliding base, a limiting mechanism and a stroke limiting assembly, the sliding base is slidably arranged on the sliding plate, the limiting mechanism comprises a moving base arranged on the sliding base, an adjusting wedge arranged in the moving base, a pushing wedge, an elastic piece and a limiting screw connected to the sliding plate and corresponding to the pushing wedge, the adjusting wedge is attached to the inclined surface of the pushing wedge, the elastic piece is telescopically arranged between the pushing wedge and the moving base, the stroke limiting assembly comprises a sensor assembly, and the sensor assembly is arranged on the sliding base, a fixed block is fixed on the sliding plate, and when the sliding base moves on the sliding plate, the sensor assembly is far away from or close to the fixed block, wherein:
the lathe controller is used for acquiring a first detection value of the sensor assembly in the process of controlling the sliding base to move towards the limiting mechanism, and the first detection value is used for indicating the distance between the fixed block and the sensor assembly;
when a first detection value of the sensor assembly reaches a preset value, controlling the sliding base to switch the moving direction of the sliding base, so that the sliding base is far away from the limiting mechanism;
before the first detection value of the sensor assembly reaches a preset value, the limiting mechanism can abut against the sliding base to generate micro deformation so as to reduce the moving speed of the sliding base. .
Furthermore, the sensor assembly is a micrometer, and when the sliding base moves on the sliding plate to enable the sensor assembly to be close to the fixed block, a telescopic probe of the micrometer can abut against the fixed block.
Further, be provided with the memory button on the lathe, the memory button with the controller electricity is connected, wherein:
the controller acquires a second detection value of the sensor assembly when detecting a memory signal generated by the operation of the memory button;
determining the second detection value as the predetermined value to update the predetermined value.
Further, the lathe further comprises a display for displaying the value detected by the sensor assembly.
Further, the sliding plate is clamped on a transverse sliding track, and the moving direction of the sliding plate on the transverse sliding track is perpendicular to the moving direction of the sliding base on the sliding plate, wherein:
a controller of the lathe controls a transverse driving mechanism to drive the sliding plate to move to a target position;
and when the sliding plate moves to the target position, controlling a longitudinal driving mechanism to drive the sliding base to move towards the limiting mechanism.
Further, it has the promotion lead screw to adjust the slide wedge fit interlude, the promotion lead screw sees through limit base's tip threaded connection has the rotation driving piece, movably card is equipped with in the motion base and promotes the slide wedge, rotates the rotation driving piece can make the promotion slide wedge is in adjusting pushing away of slide wedge and supporting down being close to or keeping away from limit screw, wherein:
the controller of the lathe acquires adjustment information, and determines the rotation direction and the rotation number of turns of the rotary driving piece according to the adjustment information;
and the controller of the lathe controls the rotary driving piece to rotate for the number of turns according to the rotating direction.
Furthermore, the rotary driving piece is a speed reducing motor, and a rotating shaft of the speed reducing motor is fixedly connected to the end part of the push screw rod.
Furthermore, stop gear still includes the spacing base of fixed mounting on sliding base, spacing base is the L type form of bending, the long limit of spacing base is fixed sliding base's side, the motion pedestal mounting is kept away from on the long limit of spacing base sliding base's side.
Furthermore, a collision screw is rotatably inserted into the fixed block, and the collision screw corresponds to the telescopic probe.
Furthermore, the elastic part is a return spring, a spring blind hole corresponding to the return spring is formed in the inner wall of the side face of the moving base, and the return spring is arranged in the spring blind hole.
Furthermore, a limit screw in a taper shape is fixedly installed in the spring blind hole, and the reset spring is sleeved on the taper surface of the limit screw.
Furthermore, a control hole corresponding to the pushing screw rod is formed in the pushing wedge, a step-shaped rotating sleeve is inserted into an orifice of the control hole in a matching mode, the step surface of the rotating sleeve is fixedly attached to the hole wall of the control hole, threads meshed with the pushing screw rod are engraved in the rotating sleeve, and the pushing screw rod is inserted into the rotating sleeve in a matching mode.
Furthermore, a fixing screw penetrates through the step surface of the rotating sleeve, and the rotating sleeve is pressed and held on the end surface of the adjusting wedge by the fixing screw.
Further, the sensor assembly is a touch switch, the touch switch is arranged inside the telescopic probe, and the touch switch controls the sliding process of the sliding base on the sliding plate.
Further, the sensor assembly is an infrared distance measuring sensor with the model number of KTR-GP2D 12.
Furthermore, a linkage rod is fixedly connected to the side face of the sliding base, a pressing and holding screw is inserted into the tail end of the linkage rod in a matched mode, a pressing and holding groove for accommodating the telescopic probe is formed in the tail end of the linkage rod, the bottom of the pressing and holding screw penetrates through the pressing and holding groove, and the pressing and holding screw reduces the groove width of the pressing and holding groove so as to clamp the telescopic probe.
The invention has the advantages that the adjusting wedge in the limiting mechanism is utilized to push the pushing wedge, the distance between the pushing wedge and the limiting screw is finely adjusted, the pushing wedge and the adjusting wedge are in inclined surface joint, the load born by a lathe is larger, namely, when a bearing is processed, the impact of the lathe on the limiting mechanism is extremely small, the processing size of a product can be effectively ensured, meanwhile, the telescopic probe and the sensor assembly in the range limiting assembly control the movement stroke of the sliding base according to the limitation of the limiting mechanism to drive the tool rest and the turning tool to repeatedly move, so that the mechanical tool withdrawal operation is realized, the turning tool is prevented from colliding with the product when the tool is withdrawn, and the tool collision phenomenon is avoided.
The method comprises the steps that a first detection value of a sensor assembly is obtained in the process of controlling a sliding base to move towards a limiting mechanism, and the first detection value is used for indicating the distance between a fixed block and the sensor assembly; when the first detection value of the sensor assembly reaches a preset value, the sliding base is controlled to switch the moving direction of the sliding base, so that the sliding base is far away from the limiting mechanism, and the limiting mechanism can support the sliding base to generate micro deformation to reduce the moving speed of the sliding base to ensure the processing roundness before the first detection value of the sensor assembly reaches the preset value, so that the problem that the long-time stay of a turning tool in a turning mode in the related technology slows down the processing speed of parts is solved; the effect of improving the efficiency of roundness turning is achieved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a perspective view of a preferred embodiment of the lathe of the present invention;
FIG. 2 is another perspective view of the lathe of FIG. 1;
FIG. 3 is a top view of the lathe of FIG. 1;
FIG. 4 is a perspective view of a portion of the stop mechanism of the lathe of FIG. 1;
FIG. 5 is a cross-sectional view of the spacing mechanism shown in FIG. 4;
FIG. 6 is a method flow diagram of a method of controlling a lathe according to one embodiment of the present invention;
in the figure: machine body-1, sliding plate-2, tool rest-3, moving component-4, mounting plate-101, transverse sliding track-102, transverse pushing bidirectional cylinder-103, pressing holding groove-301, sliding base-41, longitudinal pushing bidirectional cylinder-42, limiting mechanism-43, limit component-44, limiting base-431, moving base-433, limiting mounting plate-434, limiting screw-435, limiting hole-437, adjusting wedge-438, pushing wedge-439, limiting groove-430, spring blind hole-4302, positioning screw-4303, reset spring-4301, connecting plate-4341, speed reducing motor-432, pushing screw rod-436, control hole-4381, rotating sleeve-4382, fixing screw-4383, linkage rod-441, transverse sliding track-103, linkage rod-150, transverse sliding track-44, limiting screw-435, limiting hole-437, adjusting wedge-438, pushing wedge-439, limiting groove-, A telescopic probe-442, a fixed block-443, a pressing screw-445, a pressing groove-4411, an interference screw-444 and a sensor component-446.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention. On the contrary, the embodiments of the invention include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
As shown in fig. 1 to 3, the present invention provides a lathe for positioning cutting, which comprises a machine body 1, a sliding plate 2 directionally moving on the machine body 1, and a tool rest 3 movably mounted on the sliding plate 2, wherein a moving component 4 is fixedly mounted at the bottom of the tool rest 3, and the moving component 4 is movably clamped on the sliding plate 2.
The moving assembly 4 comprises a sliding base 41, a longitudinal pushing bidirectional cylinder 42 for driving the sliding base 41 to move, a limiting mechanism 43 installed on the sliding base 41 and a stroke limiting assembly 44 fixedly installed on the sliding plate 2, the tool rest 3 is detachably installed on the sliding base 41, a longitudinal clamping block (not shown) is fixedly connected to the bottom of the sliding base 41, the longitudinal clamping block is matched with a longitudinal sliding rail, the longitudinal pushing bidirectional cylinder 42 and the limiting mechanism 43 are respectively arranged at two ends of the longitudinal sliding rail, the longitudinal pushing bidirectional cylinder 42 and the limiting mechanism 43 are both fixedly installed on the sliding plate 2, the axial direction and the longitudinal sliding rail of the longitudinal pushing bidirectional cylinder 42 are the same, the stroke limiting assembly 44 is installed between the longitudinal pushing bidirectional cylinder 42 and the limiting mechanism 43, and the stroke limiting assembly 44 measures the moving stroke of the sliding base 41 in the longitudinal sliding rail.
The limiting mechanism 43 comprises a limiting base 431, a moving base 433 fixedly installed on the limiting base 431, a limiting installation plate 434 corresponding to the moving base 433, and a limiting screw 435 inserted in the limiting installation plate 434. Spacing base 431 is the L type and bends the form, and spacing base 431 fixed mounting is in the side of slide 2, and spacing base 431 is corresponding with vertical fixture block, and the minor face perpendicular to long limit of spacing base 431. The motion base 433 is fixedly installed inside a bevel of the limiting base 431, a limiting hole 437 is formed in the motion base 433, an adjusting wedge 438 is inserted into the limiting hole 437 in a matched mode, a pushing wedge 439 is further installed in the motion base 433, and the pushing wedge 439 is clamped inside the motion base 433.
The adjusting wedge 438 and the pushing wedge 439 are both right-angled trapezoids, the inclined surface of the adjusting wedge 438 and the inclined surface of the pushing wedge 439 are mutually attached in the moving base 433, a limiting groove 430 corresponding to the limiting screw 435 is formed in the moving base 433, and the limiting screw 435 is abutted to the pushing wedge 439 through the limiting groove 430. The side face, far away from the pushing wedge 439, of the inner wall of the moving base 433 is provided with a plurality of spring blind holes 4302, the hole bottom of each spring blind hole 4302 is provided with a corresponding positioning screw 4303 in an inserting manner, each positioning screw 4303 is in a taper shape, a plurality of elastic pieces (not shown) are fixedly arranged on the taper surface of each positioning screw 4303, each elastic piece is a reset spring 4301, one end of each reset spring 4301 is fixed on the taper surface of each positioning screw 4303, the other end of each reset spring 4301 abuts against the side face of the pushing wedge 439, and the abutting center of each reset spring 4301 is always fixed under the positioning action of each positioning screw 4303, namely, in the using process of each reset spring 4301, the force application direction of each reset spring 4301 cannot. The reset spring 4301 and the limiting groove 430 are located on the same side surface of the moving base 433, the reset spring 4301 is symmetrically disposed on two sides of the limiting groove 430, and the reset spring 4301 abuts against the side surface of the pushing wedge 439 away from the adjusting wedge 438. Stop mechanism 43 includes adjustment wedge 438, push wedge 439, set screw 4303, and an elastic member as described above.
The bottom of the limit mounting plate 434 is fixedly provided with a connecting plate 4341, one end of the connecting plate 4341 is fixedly arranged on the sliding plate 2, the other end of the connecting plate 4341 is fixedly connected to the bottom of the limit mounting plate 434, the limit base 431 and the motion base 433 are driven by the sliding base 41 to move on the connecting plate 4341, and the limit screw 435 is inserted in the limit mounting plate 434 in a matching way at a position corresponding to the limit groove 430.
The end face of the push wedge 438 is provided with a control hole 4381, a push screw rod 436 is inserted in the control hole 4381 in an inner meshing manner, the tail end of the push screw rod 436 is inserted in the control hole 4381, the head end of the push screw rod 436 is connected with a rotary driving member (such as a speed reduction motor, a rotary cylinder or a turning wheel handle) in a linkage manner through the limiting base 431, the torque output end of the rotary driving member is fixedly connected with the push screw rod 436 through the short edge of the limiting base 431, and the push screw rod 436 is driven to rotate in the control hole 4381. Under the driving rotation of the rotary driving member, the push screw 436 rotates in the control hole 4381, so that the push wedge 438 moves in the axial direction of the push screw 436.
The rotary driving part is a speed reducing motor 432, a rotating shaft of the speed reducing motor 432 is in linkage sleeved connection with the pushing screw rod 436 through a short edge of the limiting base 431, the pushing screw rod 436 is driven to rotate by utilizing the torque of the speed reducing motor 432, the adjusting wedge 438 is pushed or withdrawn by utilizing the thread of the pushing screw rod 431, namely when the pushing screw rod 438 rotates forwards, the adjusting wedge 438 moves away from the speed reducing motor 432 along the axial direction of the pushing screw rod 431, when the pushing screw rod 438 rotates backwards, the adjusting wedge 438 moves close to the speed reducing motor 432 along the axial direction of the pushing screw rod 431, the position of the adjusting wedge 438 is adjusted in the moving base 433, and meanwhile, the position of the adjusting wedge 438 is fixed on the pushing screw rod 436 by utilizing the braking effect of the thread on the adjusting wedge 438. The limiting mechanism 43 includes the above-mentioned connecting plate 4341, the push screw 436, and the rotary driving member.
A rotating sleeve 4382 is inserted into an aperture of the control hole 4381 in a clearance fit manner, the tail end of the pushing screw rod 436 is inserted into the rotating sleeve 4382 through the short edge of the limiting base 431, threads (not shown) meshed with the pushing screw rod 436 are carved on the inner wall of the rotating sleeve 4382, the rotating sleeve 4382 is clamped in the control hole 4381 in a step shape, the step surface of the rotating sleeve 4382 and the end surface of the adjusting wedge 438 are attached to each other, a fixing screw 4383 is inserted on the step surface of the rotating sleeve 4382 in a penetrating manner, the limiting mechanism 43 comprises the rotating sleeve 4382 and the fixing screw 4383, and the rotating sleeve 4382 is pressed and held on the end surface of the adjusting wedge 438 by the fixing screw 4383. Under the rotation of the speed reducing motor 432, the pushing screw rod 436 rotates in the rotating sleeve 4382, the rotating sleeve 4382 moves on the pushing screw rod 436 through the thread engaged with the pushing screw rod 436, and the adjusting wedge 438 is driven to move on the pushing screw rod 436 through the fixing screw 4383. It will be appreciated that in other embodiments, not shown, the rotating sleeve 4382 may be omitted, and the push screw 436 may be threadably coupled to the adjustment wedge 438, again to achieve the above-described effect.
Optionally, the distance limiting assembly 44 includes a sensor assembly 446, the sensor assembly 446 is fixed on the sliding base, the sensor assembly 446 is far away from or close to the fixed block when the sliding base moves on the sliding plate, and the detection value of the sensor assembly 446 is used for indicating the distance between the fixed block and the sensor assembly 446.
In one example, the sensor assembly 446, may be a micrometer that includes a pogo pin 442. As shown in fig. 2, the stroke limiting assembly 44 includes a linkage rod 441 and a fixing block 443 corresponding to the retractable probe 442, the retractable probe 442 is vertically and detachably inserted into the linkage rod 441, the linkage rod 441 is fixedly mounted on the side surface of the sliding base 41, the head end of the linkage rod 441 is fixed on the side surface of the sliding base 41, a pressing screw 445 is inserted into the tail end of the linkage rod 441 in a matching manner, and the retractable probe 442 is pressed and held at the tail end of the linkage rod 441 by the pressing screw 445.
When the sliding base 41 moves on the sliding plate 2 to make the sensor assembly 466 approach the fixed block 443, the micrometer telescopic probe can abut against the fixed block 443.
Preferably, a pressing groove 4411 is formed in the tail end of the linkage rod 441 below a pressing screw 445, the telescopic probe 442 penetrates through one end, close to the sliding base 41, in the pressing groove 4411, the pressing screw 445 is arranged at the other end in the pressing groove 4411, and the pressing screw 445 clamps and fixes the telescopic probe 442 by shortening the groove width of the pressing groove 4411.
The fixing block 443 is fixedly installed on the slide plate 2, an interference screw 444 is installed at a position of the fixing block 443 corresponding to the end of the pogo pin 442, and the interference screw 444 corresponds to the pogo pin 442.
The fixing block 443 comprises a sealing cover 4431, a fixing frame 4432 and a limit rod 4433, the fixing frame 4432 is installed on the side surface of the sliding plate 2 in parallel, the limit rod 4433 and the linkage rod 441 are respectively and vertically and fixedly installed on the side surface of the sliding base 41, the sealing cover 4431 is fixedly installed on the limit rod 4433 and the linkage rod 441, the fixing frame 4432 is arranged between the limit rod 4433 and the linkage rod 441 in parallel, a limit screw 4434 penetrates through the limit rod 4433, the axes of the limit screw 4434, the interference screw 444 and the telescopic probe 442 are collinear, a limit groove 4435 corresponding to the pressure holding groove 4411 is formed on the limit rod 4433, the limit screw 4434 is clamped in the limit groove 4435, the directions of the limit screw 4434 and the interference screw 444 are opposite, namely, the limit screw 4434 and the telescopic probe 442 jointly limit the fixing frame 4432 below the sealing cover 4431, the limit screw 4434 is electrically connected to the longitudinal-pushing bidirectional cylinder, when the limit screw 4434 and the fixing frame 4432 are contacted, closing of the longitudinal pushing bidirectional cylinder. The relative position of the fixed frame 4432 is fixed by the limit rod 4433 and the linkage rod 441, that is, the movement stroke of the sliding base 41 is limited by adjusting the limit screw 4434 and the interference screw 444, and the fixed frame 4432 is protected by the sealing cover 4431, and when the fixed frame 4432 moves between the limit screw 4434 and the interference screw 444, the sealing cover 4431 prevents the cutting remainder from falling into the fixed frame 4432.
When the lathe is used for large-batch single-shaft cutting production, the adjusting wedge 438 is withdrawn from the limiting hole 437 by the reverse rotation of the speed reduction motor 432 and the pushing screw rod 436, so that the pushing wedge 439 is reset to an initial position under the abutting action of the reset spring 4301. The slide plate 2 is driven to slide on the transverse sliding track 102 by the transverse pushing bidirectional air cylinder 103, the tool holder 3 with the turning tool is moved to the machining position, and then the position of the slide plate 2 on the transverse sliding track 102 is fixed.
Starting the longitudinal-pushing bidirectional cylinder 42, pushing the sliding base 41 to move on the sliding plate 2, processing a first sample, after the first sample is processed, closing the longitudinal-pushing bidirectional cylinder 42, positioning the sliding base 41 at the position of the final processing stroke on the longitudinal sliding track, rotating the limit screw 435 in the limit mounting plate 434 to enable the limit screw 435 to be attached to the pushing wedge 439, then starting the speed reducing motor 432 in the forward direction, pushing the adjusting wedge 438 into the limit hole 437 by the rotation of the pushing screw rod 436, because the inclined surface of the pushing wedge 439 is attached to the inclined surface of the adjusting wedge 438, simultaneously pushing the wedge 439 to be clamped on the moving base 433, in the process that the adjusting wedge 438 moves in the limit hole 437, the pushing wedge 439 is forced to move axially along the reset spring 4301 to finely adjust the pushing wedge 438, and by the abutting between the pushing wedge and the limit screw 435, the pushing wedge 438 is fixed relative to the position of the maximum processing stroke, after the pushing wedge 439 leaves the limit screw 435, the displacement of the pushing wedge 439 can be recovered under the pulling of the reset spring 4301, so that the processing precision of the subsequent workpiece is affected, and after the fine adjustment is completed, the displacement is recorded in the subsequent processing process, so that the processing precision can be ensured.
After fine adjustment is completed, the pressing holding groove 4411 is held by the loose pressing holding screw 445, so that the telescopic probe 442 can be adjusted in the linkage rod 441, after the telescopic probe 442 is adjusted to touch and contract with the abutting screw 444 by a certain length, the sliding base 41 is reset by longitudinally pushing the bidirectional cylinder 42, after the longitudinally pushing bidirectional cylinder 42 is reset, the limit screw 4434 is adjusted until the limit screw 4434 touches the fixing frame 44332, so that the longitudinally pushing bidirectional cylinder 42 is closed, when subsequent workpieces are machined, the longitudinally pushing bidirectional cylinder 42 is limited by using the self-telescopic performance of the telescopic probe 442 and the position adjusted by the limit screw 4434, and further the machining stroke of the sliding base 41 is limited.
In the fine adjustment process, after the pushing wedge 439 and the limit screw 435 are abutted and attached, the speed reduction motor 432 is closed, the position of the adjusting wedge 438 on the pushing screw rod 436 is fixed, and under the clamping of the adjusting wedge 438 and the reset spring 4301, the position of the pushing wedge 439 in the moving base 433 is fixed, and the taper of the inclined plane of the wedge is 1: 110 to 1: 90, preferably 1: 100, the moving range of the pushing wedge 439 is extremely small, namely the pushing wedge 439 adjusts the position of the sliding base 41 in an extremely small range, further, the position of the tool rest 3 is adjusted in an extremely small range, after the adjustment is completed, the telescopic length of the telescopic probe 442 is recorded by using the sensor assembly 446, so that the reset position of the longitudinal pushing bidirectional cylinder 42 is determined, and the precision of the lathe for repeatedly processing a large batch of materials is ensured.
Referring to fig. 6, a control method of a lathe according to an embodiment of the present invention is shown, and this embodiment exemplifies a controller that is applied to a lathe according to any one of the embodiments. As shown in fig. 6, the control method of the lathe may include:
The specific implementation can be as follows: when the first detection value of the sensor assembly reaches a preset value, the longitudinal pushing bidirectional cylinder 42 is started to withdraw the sliding base 41, and the longitudinal pushing bidirectional cylinder 42 is closed after the sliding base is reset.
It should be noted that: in the application, the sliding base is controlled to move towards the limiting mechanism, so that a workpiece to be machined (such as a bearing) is turned by using a turning tool arranged on the sliding base; when the sliding base is controlled to move to the abutting limiting mechanism from the limiting mechanism, the first detection value of the sensor assembly does not reach a preset value; the sliding base continues to move, the limiting mechanism generates micro deformation and abuts against the sliding base to reduce the moving speed of the sliding base so as to improve the turning roundness of the turning tool; and when the sliding base continues to move until the first detection value of the sensor assembly reaches a preset value, turning is completed to control the sliding base to switch the moving direction of the sliding base, so that the sliding base is far away from the limiting mechanism to withdraw the cutter.
In summary, in the method provided in the embodiment of the present invention, in the process of controlling the sliding base to move to the limiting mechanism, a first detection value of the sensor assembly is obtained, where the first detection value is used to indicate a distance between the fixed block and the sensor assembly; when the first detection value of the sensor assembly reaches a preset value, the sliding base is controlled to switch the moving direction of the sliding base, so that the sliding base is far away from the limiting mechanism, and the limiting mechanism can support the sliding base to generate micro deformation to reduce the moving speed of the sliding base to ensure the processing roundness before the first detection value of the sensor assembly reaches the preset value, so that the problem that the long-time stay of a turning tool in a turning mode in the related technology slows down the processing speed of parts is solved; the effect of improving the efficiency of roundness turning is achieved.
Optionally, the sliding plate is clamped on a transverse sliding rail, and a moving direction of the sliding plate on the transverse sliding rail is perpendicular to a moving direction of the sliding base on the sliding plate, wherein: the controller of the lathe controls the transverse driving mechanism to drive the sliding plate to move to a target position; when the sliding plate moves to the target position, the longitudinal driving mechanism is controlled to drive the sliding base to move towards the limiting mechanism, so that a workpiece to be machined (such as a bearing) is turned by using a turning tool on the sliding base.
Optionally, a memory button is arranged on the lathe, and the memory button is electrically connected with the controller, wherein: the controller acquires a second detection value of the sensor assembly when detecting a memory signal generated by the operation of the memory button; and determining the second detection value as the predetermined value to update the predetermined value.
Optionally, the lathe further comprises a display for displaying the value detected by the sensor assembly. In practical implementation, in the process of controlling the sliding base to move to the limiting mechanism to abut against the limiting mechanism, the display is controlled to display the numerical value detected by the sensor assembly.
Optionally, after the second detection value of the sensor assembly is obtained, the second detection value is displayed by flashing the display for a predetermined number of times to prompt updating of the predetermined value. The predetermined times can be set by a system developer or customized by a user.
Optionally, it has the promotion lead screw to adjust the slide wedge fit interlude, and the tip threaded connection that promotes the lead screw and see through limiting base has the rotation driving piece, and movably card is equipped with in the motion base and promotes the slide wedge, rotates this rotation driving piece and can make the promotion slide wedge be close to or keep away from limiting screw under the pushing away of adjusting the slide wedge, wherein: a controller of the lathe acquires adjustment information, and determines the rotation direction and the rotation number of turns of a rotary driving piece according to the adjustment information; the controller of the lathe controls the rotary driving piece to rotate the number of turns according to the rotating direction.
The adjusting information can be an adjusting quantity input by a user through an input device, the input device is connected with a controller in the lathe, and the input device can be a keyboard and the like; optionally, the adjustment information may be an operation signal generated by pressing an additional key on the lathe, or may be an operation signal generated by pressing a decrease key on the lathe, and the obtaining manner of the adjustment information is not specifically limited in this embodiment.
The terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying a number of the indicated technical features. Thus, a defined feature of "first", "second", may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. A lathe for location cutting is characterized by comprising a sliding plate and a moving assembly arranged on the sliding plate and used for bearing a tool rest, wherein the moving assembly comprises a sliding base, a limiting mechanism and a stroke limiting assembly, the sliding base is slidably arranged on the sliding plate, the limiting mechanism comprises a moving base arranged on the sliding base, an adjusting wedge arranged in the moving base, a pushing wedge, an elastic piece and a limiting screw connected to the sliding plate and corresponding to the pushing wedge, the adjusting wedge is attached to the inclined surface of the pushing wedge, the elastic piece is telescopically arranged between the pushing wedge and the moving base, the stroke limiting assembly comprises a sensor assembly, the sensor assembly is arranged on the sliding base, a fixed block is fixed on the sliding plate, and the sensor assembly is far away from or close to the fixed block when the sliding base moves on the sliding plate, wherein:
the lathe controller is used for acquiring a first detection value of the sensor assembly in the process of controlling the sliding base to move towards the limiting mechanism, and the first detection value is used for indicating the distance between the fixed block and the sensor assembly;
when a first detection value of the sensor assembly reaches a preset value, controlling the sliding base to switch the moving direction of the sliding base, so that the sliding base is far away from the limiting mechanism;
before the first detection value of the sensor assembly reaches a preset value, the limiting mechanism can abut against the sliding base to generate micro deformation so as to reduce the moving speed of the sliding base.
2. The lathe for positioning cutting according to claim 1, wherein the sensor assembly is a micrometer, and when the sliding base moves on the sliding plate to enable the sensor assembly to be close to the fixed block, a telescopic probe of the micrometer can abut against the fixed block.
3. The lathe for positioning cutting according to claim 1, wherein a memory button is provided on the lathe, the memory button being electrically connected to the controller, wherein:
the controller acquires a second detection value of the sensor assembly when detecting a memory signal generated by the operation of the memory button;
determining the second detection value as the predetermined value to update the predetermined value.
4. A machine tool for localized cutting as claimed in claim 1 further comprising a display for displaying the value detected by said sensor assembly.
5. The lathe for positioning cutting according to claim 1, wherein the slide plate is engaged with a lateral slide rail, and a moving direction of the slide plate on the lateral slide rail is perpendicular to a moving direction of the slide base on the slide plate, wherein:
a controller of the lathe controls a transverse driving mechanism to drive the sliding plate to move to a target position;
and when the sliding plate moves to the target position, controlling a longitudinal driving mechanism to drive the sliding base to move towards the limiting mechanism.
6. The lathe for positioning cutting according to claim 1, wherein the limiting mechanism further comprises a limiting base fixedly mounted on the sliding base, the adjusting wedge is internally fitted and inserted with a pushing screw rod, the pushing screw rod is connected with a rotary driving member through an end thread of the limiting base, the moving base is movably clamped with a pushing wedge, and the rotary driving member is rotated to enable the pushing wedge to approach or separate from the limiting screw under the pushing action of the adjusting wedge, wherein:
the controller of the lathe acquires adjustment information, and determines the rotation direction and the rotation number of turns of the rotary driving piece according to the adjustment information;
and the controller of the lathe controls the rotary driving piece to rotate for the number of turns according to the rotating direction.
7. A fixed cutting lathe as set forth in claim 6, wherein: the rotary driving piece is a speed reducing motor, and a rotating shaft of the speed reducing motor is fixedly connected to the end part of the pushing screw rod.
8. The lathe for positioning cutting according to claim 1, wherein the limiting mechanism further comprises a limiting base fixedly mounted on the sliding base, the limiting base is in an L-shaped bent shape, the long edge of the limiting base is fixed on the side surface of the sliding base, and the moving base is mounted on the long edge of the limiting base, which is far away from the side surface of the sliding base.
9. The lathe for fixed cutting according to claim 2, wherein an interference screw is rotatably inserted into the fixed block, and the interference screw corresponds to the retractable probe.
10. A fixed cutting lathe as set forth in claim 8, wherein: the elastic piece is a return spring, a spring blind hole corresponding to the return spring is formed in the inner wall of the side face of the moving base, and the return spring is arranged in the spring blind hole.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910089449.2A CN109604641B (en) | 2019-01-30 | 2019-01-30 | Lathe for positioning cutting |
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| CN201910089449.2A CN109604641B (en) | 2019-01-30 | 2019-01-30 | Lathe for positioning cutting |
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| CN109604641B true CN109604641B (en) | 2020-05-29 |
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| CN111906391A (en) * | 2020-08-14 | 2020-11-10 | 韶关市志通达信息科技有限公司 | Big-data automatic connecting piece production thread processing machine and processing method |
| CN114769627B (en) * | 2022-04-01 | 2023-03-24 | 浙江陀曼智能科技股份有限公司 | Lathe tool feeding mechanism with stroke adjusting function and bearing ring processing lathe |
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| DE102016004657A1 (en) * | 2016-04-16 | 2017-10-19 | J.G. WEISSER SöHNE GMBH & CO. KG | Method of setting up a turning machine and a turning machine |
| KR20180002316A (en) * | 2016-06-29 | 2018-01-08 | 두산중공업 주식회사 | Lathe having adjusting function for center |
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