CN202540143U - Automatic conical degree error adjustment device oriented to centerless internal cylindrical grinder - Google Patents
Automatic conical degree error adjustment device oriented to centerless internal cylindrical grinder Download PDFInfo
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- CN202540143U CN202540143U CN2012200109354U CN201220010935U CN202540143U CN 202540143 U CN202540143 U CN 202540143U CN 2012200109354 U CN2012200109354 U CN 2012200109354U CN 201220010935 U CN201220010935 U CN 201220010935U CN 202540143 U CN202540143 U CN 202540143U
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- stepper motor
- tapering
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- driver
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Abstract
The utility model discloses an automatic conical degree error adjustment device oriented to a centerless internal cylindrical grinder. In the device, a PLC (Programmable Logic Controller) (1) is respectively connected with a sanding wheel spindle stepping motor driver (2), a sanding wheel electric spindle driver (3), a conical degree adjustment stepping motor driver (4) and a touch display screen (5), wherein a conical degree adjustment stepping motor (6) is connected with a conical degree adjustment worm rod (7); the conical degree adjustment worm rod (7) is connected with a conical degree adjustment worm wheel (8); the conical degree adjustment worm wheel (8) is a part of a rotatable workpiece platform (9); a rotating spindle (10) is arranged on the rotatable workpiece platform (9); and a sanding wheel (15) is installed on a sanding wheel spindle (16). When the centerless internal cylindrical grinder performs grinding, the corner of the workpiece platform can be quantitatively and automatically adjusted according to the conical degree error of a machined workpiece through the PLC, the stepping motor and the like, so that the conical degree error of the machined workpiece is ensured to be within the range required by tolerance.
Description
Technical field
The utility model relates to a kind of taper error self-checking device towards centreless grinding machine internal.
Background technology
In modern times in the grinding, internal grinding is considered to the comparison difficulty always, and is all the more so for the processing of micro hole.Not only processing cost is high, and its machining accuracy is also had very high requirement.Existing internal grinder is generally all accomplished internal grinding with the mode of work stage radial feed; When finding that through offline inspection processing work produces bigger taper error; Normally rely on the bolt of artificial rotational workpieces platform back to regulate, this is relying on operator's experience ability to a great extent.Owing to lacking a quantitative control device, often need repeatedly to try to gather the purpose that just can reach adjusting, thereby make adjusting inefficiency, difficult quality be effectively guaranteed.For this reason; We consider the automatic governor motion through invention one cover quantification; Only need to measure processed workpiece taper error value and this taper error value is input among the PLC; Just can accomplish automatically by the PLC sequence control and regulate operation, so just can be controlled in the scope of allowing by assurance workpiece taper error easily and fast.
In the prior art, the CN2915371Y utility model patent has proposed a kind of tapering adjusting device of dresser, and this device is used at machining grinding machine adjusted dresser, and making it can be the needed tapering of processing work with crushing; The CN101829932A patent of invention has proposed a kind of grinding wheel spindle variable-angle automatic control system of fully-automatic digital control roll grinding machine; This system can control the angle of grinding wheel spindle automatically; Make that when grinding, the emery wheel working surface remains with roller surface tangent; The CN101462255A patent of invention has proposed a kind of grinding process position and attitude error automatic adjusting method and system; This method and system proposes to utilize angular displacement sensor and linear displacement transducer to detect the position and the attitude of workpiece; And pass through position and the attitude that executing agency regulates workpiece, but this detection method need be suspended process, and the control workpiece touches engagement shaft and promotes the engagement shaft motion; Come the indirect detection location of workpiece and attitude through the motion that detects engagement shaft then; Not only process is numerous and diverse, has also reduced production efficiency, and the repetitive positioning accuracy of workpiece after moving is difficult to be protected; The JP05208350A patent of invention has proposed a kind of method and apparatus of automatic tapering grinding, makes workpiece direction of feed and workpiece spindle have angle through the rotational workpieces platform, is used to the grinding with the tapering cylindrical; The JP10230458A patent of invention has proposed a kind of tapering grinding attachment; Utilize contactor to touch workpiece, record the position of workpiece, then according to tapering and the diameter set; Calculate the path of emery wheel feeding, accomplish the tapering grinding through the relative motion of emery wheel and workpiece.Above patent can not realize on centreless grinding machine internal that all taper error regulates automatically.
This shows; Be necessary to propose a kind of taper error self-checking device that can be applied on the centreless grinding machine internal; It can be after workpiece be accomplished internal grinding processing; According to the taper error situation that workpiece processing back produces, through mechanisms such as PLC, stepper motors the work stage corner is carried out quantification and regulate automatically, satisfy tolerance with the taper error that guarantees processing work.
Summary of the invention
It is a kind of towards centreless grinding machine internal that the purpose of the utility model is to provide; Particularly in the Speed Grinding of miniature bearing; Can be according to the taper error situation of workpiece processing back generation; Through PLC, stepper motor etc. the work stage corner is carried out quantification and regulate automatically, thereby the taper error that guarantees processing work satisfies tolerance.
In order to achieve the above object; The described taper error self-checking device structure towards centreless grinding machine internal of the utility model is following: the control system of this device mainly is made up of PLC (1), and PLC (1) regulates stepper motor driver (4) and is connected with touch display screen (5) with grinding wheel spindle stepper motor driver (2), emery wheel electricity spindle driver (3), tapering respectively; Said grinding wheel spindle stepper motor driver (2) is connected with grinding wheel spindle stepper motor (18); Said emery wheel electricity spindle driver (3) is connected with emery wheel electricity main shaft (16); Said tapering is regulated stepper motor driver (4) and is connected with tapering adjusting stepper motor (6); Said tapering is regulated stepper motor (6) and is connected with tapering adjusting worm screw (7); Said tapering is regulated worm screw (7) and is connected with tapering adjusting worm gear (8); It is the part of rotatable work stage (9) that said tapering is regulated worm gear (8); Rotating shaft (10) and workpiece backboard (11) are arranged on the said rotatable work stage (9); Said rotatable work stage (9) can be rotated around rotating shaft (10); Said workpiece backboard (11) is used for holding workpieces (13); Said workpiece (13) is by left wheel (12) and right roller (14) driven rotary; Grinding wheel spindle stepper motor (18) is connected with grinding wheel spindle ball screw (17); Said grinding wheel spindle ball screw (17) is connected with emery wheel electricity main shaft (16); On the said emery wheel electricity main shaft (16) emery wheel (15) is installed.Grinding wheel spindle stepper motor in this device and tapering are regulated stepper motor and can be replaced with servomotor; Its corresponding stepper motor driver also can use corresponding motor servo driver to replace.
Said PLC (Programmable Logic Controller, programmable logic controller (PLC)) is a kind of electronic control system of digital operation operation.The used PLC of this device uses the PLC of control system that this device carries out the centreless grinding machine internal of tapering adjusting, and does not need to dispose separately PLC, has reduced cost.Said PLC mainly is made up of CPU module, digital quantity input module, digital quantity output module, analog quantity input module and analog output module.Said PLC also is connected with touch display screen through MPI, can be through said touch display screen input taper error measurement data.
Said grinding wheel spindle stepper motor driver is connected with the grinding wheel spindle stepper motor, and said grinding wheel spindle stepper motor is connected with the grinding wheel spindle ball screw again.Said grinding wheel spindle stepper motor driver receives the instruction of PLC, and control grinding wheel spindle stepper motor is accomplished corresponding feeding and start and stop action through the transmission of grinding wheel spindle ball screw.
Said tapering is regulated stepper motor driver and is connected with tapering adjusting stepper motor; Regulate at tapering under the control of stepper motor driver; Tapering adjusting stepper motor makes rotatable work stage to rotate an angle around rotating shaft through the transmission of worm couple, regulates to accomplish tapering.
The utility model is divided into measurement, calculating, regulates three phases by workflow.The operation principle in each stage is following:
Measure: measuring phases is that off-line is accomplished; After the workpiece grinding is accomplished; Utilize survey tools such as micrometer that workpiece is measured; Measure two sections internal diameter numerical value D1, D2 and the two sections width L of workpiece, and with the workpiece taper measurement data inputting interface input PLC of measured data through touch display screen.
Calculate: after PLC receives internal diameter numerical value D1, D2 and the width L of the processing work that obtains through touch display screen, calculate the taper error M of workpiece, and relatively whether M carries out the threshold k that tapering is regulated greater than the needs of default; If; Then calculating need send to the regulating impulse number and adjusting direction that tapering is regulated stepper motor; Wherein, the regulating impulse number regulates the gearratio of part by tapering and the reference circle of wormwheel radius calculation in the worm couple obtains, and regulates direction and is confirmed by the big or small comparative result of D1 and D2; Otherwise, do not carry out tapering and regulate, proceed the grinding of next workpiece.
Regulate: according to regulating impulse number that calculates and adjusting direction; PLC control tapering is regulated stepper motor according to regulating the tapering adjusting that direction is accomplished above-mentioned regulating impulse number; Transmission through worm couple makes work stage accomplish the rotation of certain angle, regulates the angle between workpiece centre axle and the grinding wheel spindle; Receive the signal of adjusting completion as PLC after, system continues the grinding of next workpiece of beginning.
This utility model has realized that the taper error of centreless grinding machine internal regulates automatically, has following advantage:
1) manual measurement is regulated automatically
This device is realized the tapering adjusting of centreless grinding machine internal, only needs simple measuring workpieces both sides internal diameter numerical value, inputs to PLC through touch display screen and can accomplish the tapering adjusting, and process is simply quick, has guaranteed working (machining) efficiency.
2) accurately regulate, accurately fast
The quantification that this device is accomplished taper error through stepper motor is regulated, and system architecture is simple, and is easy to operate, need not rely on artificial experience, just can guarantee degree of regulation quickly and efficiently.
3) transplantability is good, and cost is lower
This device is to design to centreless grinding machine internal, the particularly high-speed grinding of miniature bearing lasso, but it also can pass through to change a social system and is applied to have certain portability on the internal grinder or cylindrical grinder of other types; This device adopts the taper error of offline mode measuring workpieces, and measuring instrument is simple, cost; And assemblies such as the PLC of this device, servo-drive system have directly been used the control system component of this type grinding machine, and fringe cost is also lower.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 be the utility model be not in the mood for the clamping sketch map;
Fig. 3 is the taper measurement sketch map of the utility model;
Fig. 4 is the PLC wiring schematic diagram of the utility model;
Fig. 5 is the workflow sketch map of the utility model.
Among Fig. 1: 1, PLC; 2, grinding wheel spindle stepper motor driver; 3, emery wheel electricity spindle driver; 4, tapering is regulated stepper motor driver; 5, touch display screen; 6, tapering is regulated stepper motor; 7, tapering is regulated worm screw; 8, tapering is regulated worm gear; 9, rotatable work stage; 10, rotating shaft; 11, workpiece backboard; 12, left wheel; 13, workpiece; 14, right roller; 15, emery wheel; 16, emery wheel electricity main shaft; 17, grinding wheel spindle ball screw; 18, grinding wheel spindle stepper motor.
Among Fig. 2: 11, workpiece backboard; 12, left wheel; 13, workpiece; 14, right roller; 15, emery wheel; 19, material road; 20, charging ram; 21, work mounting s; 22, front apron.
The specific embodiment
The structural representation of a kind of taper error self-checking device towards centreless grinding machine internal of the utility model is as shown in Figure 1; In this device, PLC (1) regulates stepper motor driver (4) and is connected with touch display screen (5) with grinding wheel spindle stepper motor driver (2), emery wheel electricity spindle driver (3), tapering respectively; Said grinding wheel spindle stepper motor driver (2) is connected with grinding wheel spindle stepper motor (18); Said emery wheel electricity spindle driver (3) is connected with emery wheel electricity main shaft (16); Said tapering is regulated stepper motor driver (4) and is connected with tapering adjusting stepper motor (6); Said tapering is regulated stepper motor (6) and is connected with tapering adjusting worm screw (7); Said tapering is regulated worm screw (7) and is connected with tapering adjusting worm gear (8); It is the part of rotatable work stage (9) that said tapering is regulated worm gear (8); Rotating shaft (10) and workpiece backboard (11) are arranged on the said rotatable work stage (9); Said rotatable work stage (9) can be rotated around rotating shaft (10); Said workpiece backboard (11) is used for holding workpieces (13); Said workpiece (13) is by left wheel (12) and right roller (14) driven rotary; Grinding wheel spindle stepper motor (18) is connected with grinding wheel spindle ball screw (17); Said grinding wheel spindle ball screw (17) is connected with emery wheel electricity main shaft (16); On the said emery wheel electricity main shaft (16) emery wheel (15) is installed.
The utility model be not in the mood for clamping sketch map such as Fig. 2, workpiece (13) carries out axial location by left wheel (12) and right roller (14) driven rotary by workpiece backboard (11), keeps workpiece at Working position by work mounting s (21).
Taper measurement sketch map such as Fig. 3 of the utility model measure the inside diameter D 1 in workpiece A cross section, the inside diameter D 2 in B cross section and the taper error value that two sections width L can calculate workpiece respectively.
PLC wiring schematic diagram such as Fig. 4 of the utility model have shown in the device of the utility model the line of PLC and other equipment.As shown in the figure, PLC is through pulse, direction and enable three digital quantity output signal controlling grinding wheel spindle stepper motor drivers and tapering adjusting stepper motor driver; PLC is through analog quantity speed governing, direction and enable three signal controlling emery wheel electricity spindle driver, and wherein the analog quantity speed governing is an analog quantity output signals, and direction is two digital quantity output signals with enabling; In addition, PLC receives an adjusting from tapering adjusting stepper motor driver and accomplishes signal, is the digital quantity input signal; PLC is connected through the MPI mode with touch display screen.
Workflow sketch map such as Fig. 5 of the utility model, its job step is:
1) system's power-on self-test, the grinding of beginning workpiece;
2) after the grinding of completion workpiece, utilize inside diameter D 1, D2 and the two sections width L of device measuring workpiece two sections such as micrometer;
3) with the workpiece taper measurement data inputting interface of said workpiece diameter numerical value D1, D2 and width L input touch display screen;
4) PLC according to the internal diameter numerical value D1, D2 of input and width L calculate workpiece tapering M=tan α=| D2-D1|/2L;
5) needs of PLC comparison tapering result of calculation M and default carry out the threshold k that tapering is regulated, if M＞K then carries out next step calculating and carries out the tapering adjusting; Otherwise, continue the grinding of next workpiece;
6) PLC calculates the regulating impulse number and adjusting direction that tapering is regulated stepper motor; Wherein, Regulating impulse counts that reference circle of wormwheel radius S calculates in n regulates part by tapering gearratio i (the worm screw amount of feeding that unit pulse is corresponding) and the worm couple, and computing formula is: n=arctanM*S/i; Regulate direction and confirm that by the big or small comparative result of D1 and D2 if D2＞D1 then bears adjusting, rotatable work stage is done and is rotated counterclockwise; If D1＞D2 then just regulates, rotatable work stage is done and is turned clockwise;
7) after PLC control tapering adjusting stepper motor was counted the tapering adjusting of n according to adjusting direction completion regulating impulse, tapering was regulated stepper motor driver transmission adjusting completion signal to PLC, and system proceeds the grinding of next workpiece.
Claims (2)
1. taper error self-checking device towards centreless grinding machine internal; The control system that it is characterized in that this device is PLC (1), and said PLC (1) regulates stepper motor driver (4) and is connected with touch display screen (5) with grinding wheel spindle stepper motor driver (2), emery wheel electricity spindle driver (3), tapering respectively; Said grinding wheel spindle stepper motor driver (2) is connected with grinding wheel spindle stepper motor (18); Said emery wheel electricity spindle driver (3) is connected with emery wheel electricity main shaft (16); Said tapering is regulated stepper motor driver (4) and is connected with tapering adjusting stepper motor (6); Said tapering is regulated stepper motor (6) and is connected with tapering adjusting worm screw (7); Said tapering is regulated worm screw (7) and is connected with tapering adjusting worm gear (8); It is the part of rotatable work stage (9) that said tapering is regulated worm gear (8); Rotating shaft (10) and workpiece backboard (11) are arranged on the said rotatable work stage (9); Said rotatable work stage (9) can be rotated around rotating shaft (10); Said workpiece backboard (11) is used for holding workpieces (13); Said workpiece (13) is by left wheel (12) and right roller (14) driven rotary; Grinding wheel spindle stepper motor (18) is connected with grinding wheel spindle ball screw (17); Said grinding wheel spindle ball screw (17) is connected with emery wheel electricity main shaft (16); On the said emery wheel electricity main shaft (16) emery wheel (15) is installed.
2. a kind of taper error self-checking device towards centreless grinding machine internal as claimed in claim 1 is characterized in that grinding wheel spindle stepper motor and the tapering adjusting stepper motor in this device can replace with servomotor; Its corresponding stepper motor driver also can use corresponding motor servo driver to replace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200109354U CN202540143U (en) | 2012-01-10 | 2012-01-10 | Automatic conical degree error adjustment device oriented to centerless internal cylindrical grinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200109354U CN202540143U (en) | 2012-01-10 | 2012-01-10 | Automatic conical degree error adjustment device oriented to centerless internal cylindrical grinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202540143U true CN202540143U (en) | 2012-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200109354U Withdrawn - After Issue CN202540143U (en) | 2012-01-10 | 2012-01-10 | Automatic conical degree error adjustment device oriented to centerless internal cylindrical grinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202540143U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192321A (en) * | 2012-01-10 | 2013-07-10 | 浙江大学 | Special automatic regulating device for taper error of centerless internal grinding machine |
-
2012
- 2012-01-10 CN CN2012200109354U patent/CN202540143U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103192321A (en) * | 2012-01-10 | 2013-07-10 | 浙江大学 | Special automatic regulating device for taper error of centerless internal grinding machine |
| CN103192321B (en) * | 2012-01-10 | 2015-09-23 | 浙江大学 | A kind of taper error self-checking device of centerless internal grinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121121 Effective date of abandoning: 20150923 |
|
| RGAV | Abandon patent right to avoid regrant |