CN104440574A - Power-off protection device for grinding machine - Google Patents
Power-off protection device for grinding machine Download PDFInfo
- Publication number
- CN104440574A CN104440574A CN201410751594.XA CN201410751594A CN104440574A CN 104440574 A CN104440574 A CN 104440574A CN 201410751594 A CN201410751594 A CN 201410751594A CN 104440574 A CN104440574 A CN 104440574A
- Authority
- CN
- China
- Prior art keywords
- roller
- grinding machine
- brake pad
- oil cylinder
- wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- 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
Abstract
The invention discloses a power-off protection device for a grinding machine. The power-off protection device comprises a wheel and a friction device. The wheel is provided with a central hole, an annular protrusion portion is arranged on each of two end faces of the wheel, the central hole is fixedly connected with a ball screw, and the annular protrusion portions are pivoted to supports. The friction device comprises a friction block and an oil cylinder, the friction block is mounted at the free end of a piston rod of the oil cylinder, the oil cylinder is communicated with an oil way of an energy accumulator, the piston rod of the oil cylinder is vertical, the friction block is positioned on one side of the wheel, and the plane where one lateral side, facing the wheel, of the friction block is located is tangent to the wheel. When the grinding machine is in abnormal shutdown, oil in the energy accumulator rushes into an oil cavity of the oil cylinder quickly to enable the piston rod to eject the friction block vertically, the friction block is tangent to the wheel, the wheel stops rotating, the friction block drives the wheel to rotate by a certain angle, the wheel drives the ball screw to rotate by a certain angle, the ball screw drives a feed carriage to return by a certain distance to stop, a workpiece is separated from a grinding head of a grinding wheel, and thus, workpiece scrapping or damage to the grinding machine is avoided.
Description
Technical field
The present invention relates to grinder structure technical field, in particular to a kind of power-off protection apparatus of grinding machine.
Background technology
Existing large-scale grinding machine, the general volume of the workpiece processed is large, Heavy Weight, and workpiece is expensive.Run into the situation of unexpected power-off in operation, the drive unit ball screw of the feeding planker of grinding machine is due to the reason of inertia, can with emery wheel grinding-head to the feeding of workpiece direction, or emery wheel grinding-head can rest on a certain fixed position grinding work piece, both of these case all can cause scrapping of workpiece, and more serious even can damage grinding machine.
Summary of the invention
Technical problem solved by the invention: existing large-scale grinding machine, run into the situation of unexpected power-off in operation, the drive unit ball screw of the feeding planker of grinding machine is due to the reason of inertia, can with emery wheel grinding-head to the feeding of workpiece direction, or emery wheel grinding-head can rest on a certain fixed position grinding work piece, both of these case all can cause scrapping of workpiece, and more serious even can damage grinding machine.
The invention provides following technical scheme: a kind of power-off protection apparatus of grinding machine, comprise roller, first support, rubbing device, accumulator, described roller offers centre bore, described roller both ends of the surface establish annular protrusion, described centre bore is fixedly connected with ball screw, described annular protrusion by bearing hinge joint on the first support, described first support is fixed in grinding machine frame, described rubbing device comprises brake pad, oil cylinder, described brake pad is arranged on the piston rod free end of oil cylinder, described oil cylinder is communicated with accumulator oil circuit, the piston rod of described oil cylinder is vertical shape, described brake pad is positioned at the side of roller, described brake pad is vertical shape towards a side of roller, described brake pad towards place, a side plane of roller and roller tangent, described brake pad is under the driving of cylinder piston rod, its side top towards roller can lower than its place, side plane towards roller and the points of tangency of roller, described brake pad is under the driving of cylinder piston rod, its side top towards roller also can higher than its place, side plane towards roller and the points of tangency of roller.
Existing large-scale grinding machine generally all installs accumulator, and accumulator is a kind of energy savings device in hydropneumatic system.It is in due course the energy conversion in system is that compression energy or potential energy store, and when system needs, again compression energy or potential energy is changed into the energy such as hydraulic pressure or air pressure and discharges, again mending feed system.When system instantaneous pressure increases, it can absorb this part energy, normal to ensure whole system pressure.When grinding machine is shut down but still when need maintain certain pressure, can stop solution press pump and by the leakage of accumulator bucking-out system, with the pressure of keeping system.
By technique scheme provided by the invention, when grinding machine normally runs, brake pad towards a side top of roller lower than its place, side plane towards roller and the points of tangency of roller, brake pad is positioned at the below of roller side, so, brake pad can not interfere the normal operation of roller, that is, can not interfere the normal operation of ball screw.When grinding machine disorderly closedown, the oil in accumulator is flushed to rapidly in the oil pocket of oil cylinder, makes the vertical jack-up brake pad of piston rod, described brake pad towards a side of roller and roller tangent.Under the effect of frictional force, first roller stops operating (original roller along with ball screw rotate), afterwards, along with the rising of brake pad, roller rotates (direction of rotation is contrary with the direction of rotation of original roller) certain angle under brake pad drives, roller drives ball screw to rotate (direction of rotation is contrary with the direction of rotation of original ball screw) certain angle, ball screw drives the certain distance of feeding planker rollback to stop again, workpiece is separated, in order to avoid cause scrapping or the damage of grinding machine of workpiece with emery wheel grinding-head.
As a modification of the present invention, described roller circumferential surface covers rubber layer, or described brake pad covers rubber layer on a side of roller, or roller circumferential surface and brake pad all cover rubber layer on a side of roller.
As a kind of explanation of the present invention, described rubbing device also comprises coil tension spring, a transverse bar is established in the side of described brake pad roller dorsad, a transverse bar is also established in the side of described oil cylinder roller dorsad, described coil tension spring is vertical shape, one end of described coil tension spring is connected on the transverse bar of brake pad, and the other end of described coil tension spring is connected on the transverse bar of oil cylinder.The brake pad that described coil tension spring can be used for rising declines and resets.
Further illustrate as of the present invention, described rubbing device also comprises the second support be fixed in grinding machine frame, described second support comprises two pieces of supporting plates, and described two pieces of supporting plates are positioned at the both sides of brake pad, and the inner side of described two pieces of supporting plates arranges a pair guide post in opposite directions; Described brake pad two sides are offered the gathering sill matched with described guide post.
Further illustrate as of the present invention, described rubbing device also comprises base plate, and described backplanes support is bottom oil cylinder, and described base plate is fixed in grinding machine frame.Described base plate corner place offers fixing hole, and described base plate is threaded connection part and is fixed in grinding machine frame.Base plate is fixed in grinding machine frame by stretching into base plate fixing hole by described threaded connector.
Further illustrate as of the present invention, described roller centre bore is fixedly connected with by key with ball screw.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is described further:
Fig. 1 is the planar structure schematic diagram of the power-off protection apparatus of a kind of grinding machine of the present invention;
Fig. 2 is the perspective view of the power-off protection apparatus of a kind of grinding machine of the present invention;
Fig. 3 is the structural representation of roller in Fig. 1 or Fig. 2.
Symbol description in figure:
10-roller; 101-centre bore; 102-annular protrusion;
20-first support;
30-rubbing device; 31-brake pad; 32-oil cylinder; 320-oiler; 33-coil tension spring; 34-second support; 341-guide post; 35-base plate;
40-bearing;
90-ball screw.
Detailed description of the invention
As shown in Figure 1, a kind of power-off protection apparatus of grinding machine, comprises roller 10, first support 20, rubbing device 30, accumulator.
As shown in Figure 3, described roller 10 offers centre bore 101, and described roller 10 both ends of the surface establish annular protrusion 102, and described roller 10 circumferential surface covers rubber layer.As shown in Figure 1 and Figure 2, described centre bore 101 is fixedly connected with by key with ball screw 90, and described annular protrusion 102 is articulated on the first support 20 by bearing 40, and described first support 20 is fixed in grinding machine frame.
As shown in Figure 2, described rubbing device 30 comprises brake pad 31, oil cylinder 32, coil tension spring 33, second support 34, base plate 35.Described brake pad 31 is arranged on the piston rod free end of oil cylinder 32, and described oil cylinder 32 is communicated with accumulator oil circuit, and the piston rod of described oil cylinder 32 is vertical shape, and described brake pad 31 is positioned at the side of roller 10.Described brake pad 31 is vertical shape towards a side of roller 10, and this side covers rubber layer, this place, side plane and roller 10 tangent.Described brake pad 31 is under the driving of oil cylinder 32 piston rod, its side top towards roller 10 can lower than its place, side plane towards roller 10 and the points of tangency of roller 10, also can higher than its place, side plane towards roller 10 and the points of tangency of roller 10.A transverse bar is established in the side of described brake pad 31 roller 10 dorsad, a transverse bar is also established in the side of described oil cylinder 32 roller 10 dorsad, described coil tension spring 33 is in vertical shape, one end of described coil tension spring 33 is connected on the transverse bar of brake pad 31, and the other end of described coil tension spring 33 is connected on the transverse bar of oil cylinder 32.Described second support 34 is fixed in grinding machine frame, described second support 34 comprises two pieces of supporting plates, described two pieces of supporting plates are positioned at the both sides of brake pad 31, the inner side of described two pieces of supporting plates arranges a pair guide post 341 in opposite directions, match with guide post 341, described brake pad 31 two sides offer gathering sill.Described base plate 35 is supported on bottom oil cylinder 32, and described base plate 35 4 jiaos of places offer fixing hole, and described base plate 35 is threaded connection part and is fixed in grinding machine frame.
When grinding machine normally runs, brake pad 31 towards a side top of roller 10 lower than its place, side plane towards roller 10 and the points of tangency of roller 10, brake pad 31 is positioned at the below of roller 10 side, so, brake pad 31 can not interfere the normal operation of roller 10, that is, the normal operation of ball screw 90 can not be interfered.When grinding machine disorderly closedown, the oil in accumulator is flushed to rapidly in the oil pocket of oil cylinder 32 by oiler 320, makes the vertical jack-up brake pad 31 of piston rod, described brake pad 31 towards a side of roller 10 and roller 10 tangent.Under the effect of frictional force, first roller 10 stops operating (original roller 10 along with ball screw 90 rotate), afterwards, along with the rising of brake pad 31, roller 10 rotates (direction of rotation is contrary with the direction of rotation of original roller 10) certain angle under brake pad 31 drives, roller 10 drives ball screw 90 to rotate (direction of rotation is contrary with the direction of rotation of original ball screw 90) certain angle, ball screw 90 drives the certain distance of feeding planker rollback to stop again, workpiece is separated with emery wheel grinding-head, in order to avoid cause scrapping or the damage of grinding machine of workpiece.
Above content is only better embodiment of the present invention, and for those of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, this description should not be construed as limitation of the present invention.
Claims (8)
1. the power-off protection apparatus of a grinding machine, comprise roller (10), first support (20), rubbing device (30), accumulator, described roller (10) offers centre bore (101), described roller (10) both ends of the surface establish annular protrusion (102), described centre bore (101) is fixedly connected with ball screw (90), described annular protrusion (102) is articulated on the first support (20) by bearing (40), described first support (20) is fixed in grinding machine frame, described rubbing device (30) comprises brake pad (31), oil cylinder (32), described brake pad (31) is arranged on the piston rod free end of oil cylinder (32), described oil cylinder (32) is communicated with accumulator oil circuit, it is characterized in that: the piston rod of described oil cylinder (32) is vertical shape, described brake pad (31) is positioned at the side of roller (10), described brake pad (31) is vertical shape towards a side of roller (10), described brake pad (31) towards place, a side plane of roller (10) and roller (10) tangent, described brake pad (31) is under the driving of oil cylinder (32) piston rod, its side top towards roller (10) can lower than its place, side plane towards roller (10) and the points of tangency of roller (10), described brake pad (31) is under the driving of oil cylinder (32) piston rod, its side top towards roller (10) also can higher than its place, side plane towards roller (10) and the points of tangency of roller (10).
2. the power-off protection apparatus of a kind of grinding machine as claimed in claim 1, is characterized in that: described roller (10) circumferential surface covers rubber layer.
3. the power-off protection apparatus of a kind of grinding machine as claimed in claim 1, is characterized in that: described brake pad (31) covers rubber layer on a side of roller (10).
4. the power-off protection apparatus of a kind of grinding machine as claimed in claim 1, it is characterized in that: described rubbing device (30) also comprises coil tension spring (33), a transverse bar is established in the side of described brake pad (31) roller (10) dorsad, a transverse bar is also established in the side of described oil cylinder (32) roller (10) dorsad, described coil tension spring (33) is in vertical shape, one end of described coil tension spring (33) is connected on the transverse bar of brake pad (31), the other end of described coil tension spring (33) is connected on the transverse bar of oil cylinder (32).
5. the power-off protection apparatus of a kind of grinding machine as claimed in claim 1, it is characterized in that: described rubbing device (30) also comprises the second support (34) be fixed in grinding machine frame, described second support (34) comprises two pieces of supporting plates, described two pieces of supporting plates are positioned at the both sides of brake pad (31), and the inner side of described two pieces of supporting plates arranges a pair guide post (341) in opposite directions; Described brake pad (31) two sides are offered the gathering sill matched with described guide post (341).
6. the power-off protection apparatus of a kind of grinding machine as claimed in claim 1; it is characterized in that: described rubbing device (30) also comprises base plate (35); described base plate (35) is supported on oil cylinder (32) bottom, and described base plate (35) is fixed in grinding machine frame.
7. the power-off protection apparatus of a kind of grinding machine as claimed in claim 6, is characterized in that: described base plate (35) corner place offers fixing hole, and described base plate (35) is threaded connection part and is fixed in grinding machine frame.
8. the power-off protection apparatus of a kind of grinding machine as claimed in claim 1, is characterized in that: described roller centre bore (101) is fixedly connected with by key with ball screw (90).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410751594.XA CN104440574B (en) | 2014-12-10 | 2014-12-10 | Power-off protection device for grinding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410751594.XA CN104440574B (en) | 2014-12-10 | 2014-12-10 | Power-off protection device for grinding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104440574A true CN104440574A (en) | 2015-03-25 |
| CN104440574B CN104440574B (en) | 2017-01-11 |
Family
ID=52887733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410751594.XA Expired - Fee Related CN104440574B (en) | 2014-12-10 | 2014-12-10 | Power-off protection device for grinding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104440574B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107059708A (en) * | 2017-03-17 | 2017-08-18 | 广州方阁建筑工程技术开发有限公司 | A kind of bridge floor cleaning plant |
| CN109093517A (en) * | 2018-09-14 | 2018-12-28 | 湖北晶艺水晶有限公司 | A kind of protective device of water drilling grinding machine and automatic water drilling grinding machine |
-
2014
- 2014-12-10 CN CN201410751594.XA patent/CN104440574B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107059708A (en) * | 2017-03-17 | 2017-08-18 | 广州方阁建筑工程技术开发有限公司 | A kind of bridge floor cleaning plant |
| CN109093517A (en) * | 2018-09-14 | 2018-12-28 | 湖北晶艺水晶有限公司 | A kind of protective device of water drilling grinding machine and automatic water drilling grinding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104440574B (en) | 2017-01-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhao Hongbin Inventor before: Yang Jianhua |
|
| COR | Change of bibliographic data | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20161202 Address after: 523000 Guangdong province Dongguan Songshan Lake high tech Industrial Development Zone Technology Park building 11, floor 2, 201D Applicant after: Dongguan Tianhe electromechanical Development Co. Ltd. Address before: 215106 Taiping Road, Taiping Street, Suzhou, Jiangsu, No. 11, No. Applicant before: Cheng Pin precision optical machinery Co., Ltd of Suzhou City |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171207 Address after: 215021 Jiangsu city in Suzhou Province town of Xiangcheng District Wong Tai Pan Yang Industrial Park Spring Road, No. 8-3 Patentee after: Suzhou Bonray Measure & Control Equipment Co., Ltd. Address before: 523000 Guangdong province Dongguan Songshan Lake high tech Industrial Development Zone Technology Park building 11, floor 2, 201D Patentee before: Dongguan Tianhe electromechanical Development Co. Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170111 Termination date: 20181210 |