CN103394977B - A kind of centreless grinding device of hard alloy bar - Google Patents
A kind of centreless grinding device of hard alloy bar Download PDFInfo
- Publication number
- CN103394977B CN103394977B CN201310342133.2A CN201310342133A CN103394977B CN 103394977 B CN103394977 B CN 103394977B CN 201310342133 A CN201310342133 A CN 201310342133A CN 103394977 B CN103394977 B CN 103394977B
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- wheel
- hard alloy
- alloy bar
- emery wheel
- swiveling
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- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
The invention discloses a kind of centreless grinding device of hard alloy bar, simulate an emery wheel-guide wheel device, respectively add in hard alloy bar both sides the swiveling wheel that turns to identical relative misalignment.Its design feature is, flexible material (as rubber, nylon) is all adopted by swiveling wheel to make, be arranged in workpiece both sides, with when hard alloy bar enters emery wheel-guide wheel by electromagnetism automatic feeding to it one turn to identical rotary motion and radial feed speed with emery wheel, reduce guide wheel to the impulsive force of hard alloy bar end face, thus the percent defective of product is reduced, reduce production cost.
Description
Technical field
The present invention relates to a kind of centreless grinding device of hard alloy bar, specifically can be used for the centreless grinding device of hard alloy bar.
Background technology
The composite that hard alloy bar is made up of WC particle and the good bonding agent of relative toughness of high rigidity, thus it has good mechanical performance, as hardness, wearability, ductility etc.Carbide alloy is extensive use in the industry, and requiring can large batch of production hard alloy cutter, but due to carbide alloy processing difficulties, processing cost high, high to the quality requirement of lathe, these all constrain carbide alloy extensive use.PCB is exactly the printed wiring board being often called " mother of electronic system product " by people.Pcb board industry develops rapidly in China in recent years.Pcb board, before dress electronic device, must carry out the processing such as groove milling, boring, in order to ensure precision and the production efficiency of the position, hole of pcb board, just have very high requirement to the use of cutter on panel.Printed board drill bit generally all adopts hard alloy bar, because the multiple copper foil plate of other materials such as epoxy glass fabric is fast especially to the wearing and tearing of cutter.
Due to the material behavior of carbide alloy, we mainly adopt centerless grinding processing rigid alloy bar material present stage.Centreless grinding by automatic feeding, the workpiece that electromagnetic feeding device is sent here is successfully delivered between emery wheel and guide wheel, completes the cylindricalo grinding of machining.Because the automaticity of automatic feeding is high, be convenient to ensure work safety, stable.It not only can replace artificial feeding, alleviates the labour intensity of workman, and can significantly improve the quality of products and operating efficiency.But due to the material behavior of carbide alloy in the process of the processing of centerless grinding, the emery wheel that during processing thin rod, the end face of thin rod is easily moved impacts and collapses angle or produce micro-crack, thus makes the percent defective of product very high, also increases production cost.(note: carbide alloy PCB bar size diameter 3.25mm, length 39mm)
In existing centreless grinding technology, all automatic charging devices are all send into space between emery wheel and guide wheel with certain axial velocity, and that impulsive force suffered by moment causing bar section to enter grinding area is larger.
Summary of the invention
The object of the invention is to, for the deficiencies in the prior art, a kind of centreless grinding device of hard alloy bar is provided, can when hard alloy bar enters grinding area to an one rotary motion identical with emery wheel direction of rotation, to reduce the impulsive force of emery wheel to hard alloy bar end face, thus angle phenomenon is collapsed in minimizing.
Technical scheme of the present invention is, a kind of centreless grinding device of hard alloy bar, the guide wheel comprising emery wheel and adapt with emery wheel, emery wheel centre rotational axis is parallel with guide wheel centre rotational axis, and between emery wheel and guide wheel, have the space for Pattern In Grinding Cemented Carbide bar, and be provided with feed mechanism hard alloy bar is delivered to space between emery wheel and guide wheel from emery wheel and the front end edge of guide wheel and the direction of grinding wheel spindle line parallel, this device also comprises and is located at described emery wheel with guide wheel front end and drives hard alloy bar to do the rotary feeding mechanism of the rotary motion consistent with emery wheel direction of rotation.
Two swiveling wheels that described rotary feeding mechanism comprises motor, the connecting gear be connected with motor and is connected with connecting gear, the centre rotational axis of two swiveling wheels is all parallel with emery wheel centre rotational axis, and the direction of rotation of two swiveling wheels and the direction of rotation of emery wheel consistent, have the gap holding hard alloy bar between two swiveling wheels, the fore-and-aft direction distance at two swiveling wheel centers is less than the length of hard alloy bar.
Described connecting gear comprises by two of belt connection for transmission bottom pulley and two upper belt pulleys corresponding with two bottom pulley, two upper belt pulleys corresponding swiveling wheel respectively, and upper belt pulley is connected with corresponding swiveling wheel by swiveling wheel centre rotational axis, by belt connection for transmission between bottom pulley and corresponding upper belt pulley, one of them bottom pulley center is provided with the transmission shaft driving bottom pulley to rotate, and described transmission shaft is connected by shaft coupling with motor output shaft.
Open buncher, rotated by shaft coupling band movable belt pulley, by V belt translation driven rotary wheel rotation respectively again.The rotating speed of swiveling wheel adjusts by speed regulator to adapt to different processing conditions.
Described swiveling wheel is made up of flexible material, in order to avoid scratch hard alloy bar, flexible material can select rubber or nylon.
Compared with prior art, the invention has the beneficial effects as follows: before hard alloy bar enters grinding area to it one turn to identical rotary motion with emery wheel, thus reduce guide wheel to the impulsive force of hard alloy bar end face, thus the percent defective of product is reduced, also reduce production cost.
Accompanying drawing explanation
Fig. 1 is the front view of grinding attachment of the present invention;
Fig. 2 is the left view of grinding attachment of the present invention.
Detailed description of the invention
As Fig. 1, shown in Fig. 2, a kind of centreless grinding device of hard alloy bar, comprise the emery wheel 10 be arranged on lathe 11 and the guide wheel adapted with emery wheel 10, emery wheel centre rotational axis is parallel with guide wheel centre rotational axis, and between emery wheel 10 and guide wheel, have the space for Pattern In Grinding Cemented Carbide bar 8, hard alloy bar is delivered to space between emery wheel 10 and guide wheel by feed mechanism 9 from emery wheel 10 and the front end edge of guide wheel and the direction of emery wheel 10 axis being parallel, this device also comprises and is located at described emery wheel 10 with guide wheel front end and drives hard alloy bar 8 to do the rotary feeding mechanism of the rotary motion consistent with emery wheel 10 direction of rotation.
Two swiveling wheels 7 that rotary feeding mechanism comprises the motor 2 be arranged on pedestal 1, the connecting gear be connected with motor 2 and is connected with connecting gear, the centre rotational axis of two swiveling wheels 7 is all parallel with emery wheel 10 centre rotational axis, and the direction of rotation of two swiveling wheels 7 and the direction of rotation of emery wheel consistent, have the gap holding hard alloy bar 8 between two swiveling wheels 7, the fore-and-aft direction distance at two swiveling wheel 7 centers is less than the length of hard alloy bar 8.
Connecting gear comprises by two of belt connection for transmission bottom pulley 4 and two upper belt pulleys 6 corresponding with two bottom pulley 4, two upper belt pulleys 6 and two swiveling wheel 7 one_to_one corresponding, and upper belt pulley 6 is connected with corresponding swiveling wheel 7 by swiveling wheel centre rotational axis 12, by belt 5 connection for transmission between bottom pulley 4 and corresponding upper belt pulley 6, one of them bottom pulley 4 center is provided with the transmission shaft 13 driving bottom pulley 4 to rotate, and described transmission shaft 13 is connected by shaft coupling 3 with motor 2 output shaft.
Swiveling wheel 7 is made up of rubber or nylon.
Claims (5)
1. the centreless grinding device of a hard alloy bar, the guide wheel comprising emery wheel (10) and adapt with emery wheel (10), emery wheel centre rotational axis is parallel with guide wheel centre rotational axis, and between emery wheel (10) and guide wheel, have the space for Pattern In Grinding Cemented Carbide bar (8), and be provided with feed mechanism (9) hard alloy bar (8) is delivered to space between emery wheel (10) and guide wheel from emery wheel (10) and the front end edge of guide wheel and the direction of emery wheel (10) axis being parallel, it is characterized in that, this device also comprises and is located at described emery wheel (10) with guide wheel front end and drives hard alloy bar (8) to do the rotary feeding mechanism of the rotary motion consistent with emery wheel (10) direction of rotation.
2. the centreless grinding device of hard alloy bar according to claim 1, it is characterized in that, described rotary feeding mechanism comprises motor (2), the connecting gear be connected with motor (2) and two swiveling wheels (7) be connected with connecting gear, the centre rotational axis of two swiveling wheels (7) is all parallel with emery wheel (10) centre rotational axis, and the direction of rotation of two swiveling wheels (7) is consistent with the direction of rotation of emery wheel, the gap of accommodation hard alloy bar (8) is had between two swiveling wheels (7), the fore-and-aft direction distance at two swiveling wheel (7) centers is less than the length of hard alloy bar (8).
3. the centreless grinding device of hard alloy bar according to claim 2, it is characterized in that, described connecting gear comprises by two of belt connection for transmission bottom pulley (4) and two upper belt pulleys (6) corresponding with two bottom pulley (4), two upper belt pulleys (6) and two swiveling wheel (7) one_to_one corresponding, and upper belt pulley (6) is connected with corresponding swiveling wheel (7) by swiveling wheel centre rotational axis (12), by belt (5) connection for transmission between bottom pulley (4) with corresponding upper belt pulley (6), one of them bottom pulley (4) center is provided with the transmission shaft (13) driving bottom pulley (4) to rotate, described transmission shaft (13) is connected by shaft coupling (3) with motor (2) output shaft.
4. the centreless grinding device of hard alloy bar according to Claims 2 or 3, it is characterized in that, described swiveling wheel (7) is made up of flexible material.
5. the centreless grinding device of hard alloy bar according to claim 4, it is characterized in that, described flexible material is rubber or nylon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310342133.2A CN103394977B (en) | 2013-08-08 | 2013-08-08 | A kind of centreless grinding device of hard alloy bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310342133.2A CN103394977B (en) | 2013-08-08 | 2013-08-08 | A kind of centreless grinding device of hard alloy bar |
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| Publication Number | Publication Date |
|---|---|
| CN103394977A CN103394977A (en) | 2013-11-20 |
| CN103394977B true CN103394977B (en) | 2015-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310342133.2A Expired - Fee Related CN103394977B (en) | 2013-08-08 | 2013-08-08 | A kind of centreless grinding device of hard alloy bar |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106863036A (en) * | 2017-01-18 | 2017-06-20 | 天津市山友玉石纽扣有限公司 | A kind of centerless external cylindrical mill |
| CN111604716A (en) * | 2020-05-29 | 2020-09-01 | 南阳鼎泰高科有限公司 | Process method for processing PCB micro drill |
| CN115091379B (en) * | 2022-07-21 | 2023-04-28 | 上海惠而顺精密工具股份有限公司 | Integrated zirconia grinding head processing technology and grinding tool manufactured by same |
Citations (7)
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| JP2002166359A (en) * | 2000-11-29 | 2002-06-11 | Waida Seisakusho:Kk | Working method, working device, and working machine |
| CN201175858Y (en) * | 2008-01-02 | 2009-01-07 | 文宇 | Oversize ball bearing double-groove high precision diamond grinding wheel dressing device |
| KR100899136B1 (en) * | 2001-07-17 | 2009-05-26 | 고요 기카이 고교 가부시키가이샤 | Centerless grinding method for bar-shape work and centerless grinder |
| JP2010042480A (en) * | 2008-08-14 | 2010-02-25 | Daido Steel Co Ltd | Rolled bar surface polishing method |
| CN102581746A (en) * | 2012-02-29 | 2012-07-18 | 无锡市飞云球业有限公司 | Ball feeding-discharging hole structure of ball mill |
| CN102765028A (en) * | 2012-07-25 | 2012-11-07 | 无锡机床股份有限公司 | Charge and discharge mechanism of numerical control spherical roller grinding machine |
| CN203409607U (en) * | 2013-08-08 | 2014-01-29 | 湖南大学 | Centerless grinding device for hard alloy bar |
-
2013
- 2013-08-08 CN CN201310342133.2A patent/CN103394977B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002166359A (en) * | 2000-11-29 | 2002-06-11 | Waida Seisakusho:Kk | Working method, working device, and working machine |
| KR100899136B1 (en) * | 2001-07-17 | 2009-05-26 | 고요 기카이 고교 가부시키가이샤 | Centerless grinding method for bar-shape work and centerless grinder |
| CN201175858Y (en) * | 2008-01-02 | 2009-01-07 | 文宇 | Oversize ball bearing double-groove high precision diamond grinding wheel dressing device |
| JP2010042480A (en) * | 2008-08-14 | 2010-02-25 | Daido Steel Co Ltd | Rolled bar surface polishing method |
| CN102581746A (en) * | 2012-02-29 | 2012-07-18 | 无锡市飞云球业有限公司 | Ball feeding-discharging hole structure of ball mill |
| CN102765028A (en) * | 2012-07-25 | 2012-11-07 | 无锡机床股份有限公司 | Charge and discharge mechanism of numerical control spherical roller grinding machine |
| CN203409607U (en) * | 2013-08-08 | 2014-01-29 | 湖南大学 | Centerless grinding device for hard alloy bar |
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| CN103394977A (en) | 2013-11-20 |
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