CN105817979A - Direct drive type angle grinder - Google Patents
Direct drive type angle grinder Download PDFInfo
- Publication number
- CN105817979A CN105817979A CN201610368835.1A CN201610368835A CN105817979A CN 105817979 A CN105817979 A CN 105817979A CN 201610368835 A CN201610368835 A CN 201610368835A CN 105817979 A CN105817979 A CN 105817979A
- Authority
- CN
- China
- Prior art keywords
- main shaft
- locking
- locking piece
- angle grinder
- drive type
- 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.)
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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
- B24B23/00—Portable grinding machines, e.g. hand-guided; Accessories therefor
- B24B23/02—Portable grinding machines, e.g. hand-guided; Accessories therefor with rotating grinding tools; Accessories therefor
- B24B23/028—Angle tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a direct drive type angle grinder. The direct drive type angle grinder comprises a main shaft and a head shell. A flat square structure is milled on the side wall of the main shaft, and a locking piece is arranged on the head shell or a front cover in a sliding manner; and when the locking piece is clamped and stopped at the flat square, the main shaft cannot rotate, and locking of the main shaft is achieved. An elastic piece is arranged between the locking piece and the head shell or the front cover, the locking piece is returned to the initial state that the locking piece and the flat square are released through the elastic piece, and the main shaft can rotate. When a disc sheet on the main shaft needs to be replaced, the locking piece is moved, the locking piece and the flat square are matched to be clamped and stopped, the main shaft cannot rotate, and an upper pressing plate on the main shaft can be released through a corresponding tool to replace the disc sheet. After replacement is finished, the locking piece and the flat square are clamped and stopped continuously, then the upper pressing plate and the main shaft are fixedly screwed, the locking piece is released after the disc sheet is fixed, then the locking piece can be returned to the initial position, and rotation of the main shaft is not influenced. By means of the structure given in the direct drive type angle grinder, self locking of the main shaft can be achieved, and the disc sheet can be replaced without assistance of other auxiliary tools.
Description
Technical field
The present invention relates to polishing machine technical field, further relate to a kind of direct-drive type electric angle grinder.
Background technology
Direct-drive type electric angle grinder, compared with traditional electric angle grinder, does not has gear drive inside machine, motor directly drives output shaft to rotate, and eliminates the noise that gear drive is brought, gets a promotion service life yet.Electric angle grinder on market is all band gear transmission structure, and the locking of main shaft is to arrange eccentric orfice in the card of gear, utilizes telescopic mast to realize locking in injecting eccentric orfice.As shown in Figure 1, represent the sectional structure chart of a kind of common electric angle grinder, wherein 01 represents gear, 02 represents telescopic mast, telescopic mast can be inserted on gear in the eccentric through hole offered, by by self rotating shaft 03 and telescopic mast 02, gear uniquely determines that gear 01 is locked after extending downwardly from by angle, telescopic mast 02, thus rotating shaft 03 is locked, rotating disk can be changed.As shown by the arrows in Figure 2, for the electric angle grinder not having self-locking structure, need when changing disc to block rotating shaft and top board respectively by two spanners, just can turn bolt and be replaced.
Gear structure is not arranged for direct-drive type electric angle grinder, the most how to design a kind of can the direct-drive type electric angle grinder of self-locking, be current those skilled in the art's technical issues that need to address.
Summary of the invention
For solving above-mentioned technical problem, the invention provides a kind of direct-drive type electric angle grinder, including the main shaft directly driven by the stator of motor, described main shaft and motor are installed in head capsule, slide on milling flat, head capsule or protecgulum on the sidewall of described main shaft and the locking piece that can coordinate locking with described flat or loosen is set；Arranging elastic component between described locking piece and described head capsule or described protecgulum, described locking piece can be returned to initial relaxation state by described elastic component.
Alternatively, described locking piece is the self-locking plate of tabular, and can slide in the chute on described protecgulum in the two ends of described self-locking plate, the plate face of described self-locking plate is perpendicular to the axis of described main shaft.
Alternatively, the plate face width degree that the slip of described self-locking plate two ends is plugged on described protecgulum is less than mid portion, and the mid portion of described self-locking plate offers combination bore.
Alternatively, one end of described self-locking plate is perpendicular to plate face and arranges flap, arranges elastic component between described flap and protecgulum.
Alternatively, described flat is arranged at the end of described main shaft, and described locking piece is the clamping block arranging lid along the axial sliding movement of described main shaft, and the bottom of described clamping block is offered the described flat with described spindle nose and coordinated the groove of locking.
Alternatively, the lateral wall of described clamping block is polygon post or cylindroid, and the chute on described head capsule coordinates spacing with described clamping block.
Alternatively, big up and small down stepped of described clamping block；The dimensional fits card dress of the ladder below clamping volute spring between described clamping block and described head capsule, the upper end of described volute spring and described clamping block, the lower end of described volute spring coordinates card to fill with the cavity of described head capsule.
Alternatively, fixing card dress genlocing plate in described flat, eccentric setting fixing hole on described genlocing plate, the plate face of described genlocing plate is perpendicular to the axis of described main shaft；Described locking piece is the telescopic mast being slideably positioned on described head capsule, and described telescopic mast can put in described fixing hole.
Alternatively, between described genlocing plate and motor stator, insulating boot is set.
Alternatively, in the middle part of described insulating boot and between described genlocing plate, there is cavity；Described insulating boot is fixed on the static sleeve outside described main shaft.
The present invention provides a kind of direct-drive type electric angle grinder, and including main shaft and head capsule, main shaft is directly driven by the stator of motor, and main shaft and motor are installed in inside head capsule.Milling out flat structure on the sidewall of main shaft, sliding on head capsule or protecgulum arranges locking piece, and locking piece slides into different positions and can realize engaging with flat or loosening, and when locking piece is locked to flat, main shaft cannot rotate, it is achieved that the locking of main shaft.Arranging elastic component between locking piece and head capsule or protecgulum, locking piece can be returned to the original state loosened with flat by elastic component, and main shaft is unobstructed can be rotated.
When needing the disc installed on changing main-spindle, mobile locking piece, make locking piece coordinate locking with flat, main shaft cannot rotate, and can be unclamped by the top board on main shaft by corresponding instrument, changes disc.Persistently make the locking of locking piece and flat after completing to change, then be screwed fixing to top board and main shaft, unclamp locking piece after disc is fixing, so that it may so that locking piece is returned to initial position, do not affect main shaft and rotate, be possible to prevent main shaft by unconscious obstruction.Use the structure that the present invention provides, it becomes possible to realize the self-locking of main shaft, it is not necessary to change disc by other aids.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the sectional structure chart of a kind of electric angle grinder in prior art；
Fig. 2 is the axonometric drawing during electric angle grinder dismounting not having self-locking structure；
Fig. 3 is the sectional structure chart of direct-drive type electric angle grinder in an embodiment of the present invention；
The matching chart that Fig. 4 is main shaft when not locking with self-locking plate；
Fig. 5 is main shaft and matching chart during self-locking plate locking；
Fig. 6 is the sectional structure chart of direct-drive type electric angle grinder in the second embodiment；
Fig. 7 is the partial enlarged drawing of clamping block and surrounding structure thereof；
Fig. 8 is the partial enlarged drawing after clamping block pressing；
Fig. 9 is the Facad structure figure of clamping block；
Figure 10 is the sectional structure chart of direct-drive type electric angle grinder in the third embodiment.
Wherein:
Gear 01, locking post 02, rotating shaft 03；Main shaft 1, flat 11, head capsule 2, self-locking plate 31, flap 311, combination bore 312, clamping block 32, genlocing plate 33, fixing hole 331, insulating boot 332, telescopic mast 34, protecgulum 4.
Detailed description of the invention
The core of the present invention is to provide a kind of direct-drive type electric angle grinder, it is possible to realizing self-locking, during self-locking, main shaft does not rotates, and can change disc easily.
In order to make those skilled in the art be more fully understood that the technical scheme that the present invention provides, below in conjunction with accompanying drawing and specific embodiment, the direct-drive type electric angle grinder providing the application is described in detail.
The direct-drive type electric angle grinder of the present invention includes head capsule 2 and main shaft 1, and main shaft 1 is directly driven by the stator of motor, and the rotor of main shaft 1 and motor is same axis.The stationary part of motor is arranged in head capsule 2, and head capsule 2 is as the housing body construction of motor.Milling flat 11 on the sidewall of main shaft 1, flat 11 is the planar structure being positioned on main shaft 1, arranges two parallel planar structures on the sidewall that main shaft 1 is relative, makes the side wall dimensions of main shaft 1 change.Flat 11 is two parallel planes on main shaft 1, is possible to prevent main shaft 1 to rotate, can play the effect of locking after being engaged with flat 11 by corresponding structure.The present invention realizes clamping by arranging flat 11 structure different from cylindrical outer side size on the sidewall of main shaft 1, therefore flat 11 is possible not only to the structure that directly direct milling is unnecessary on the sidewall of main shaft 1, on the sidewall at main shaft 1, also increase corresponding bulge-structure, forming opposing parallel plane, this structure is also possible.Sliding on head capsule 2 or protecgulum 4 and arrange locking piece, locking piece is for cooperating with flat 11, and when needs engages, slider latch and flat 11 have cooperated locking, and when needing to loosen, slider latch separates with flat 11, does not affect the rotation of main shaft 1.Locking piece is positioned on the outer wall of head capsule 2 or protecgulum 4 groove offered accordingly, locking piece slide two extreme positions without departing from head capsule 2 or the spacing scope of protecgulum 4.Between locking piece and head capsule 2 or protecgulum 4, it is provided with elastic component, by the elastic force of elastic component, locking piece can be returned to initial relaxation state.Do not lock between locking piece and flat 11 in an initial condition, do not affect main shaft 1 and rotate, be possible to prevent unexpected motor of opening in the locked state to cause damage.
The direct-drive type electric angle grinder that the present invention is given, turntable rotation is directly driven by the rotor of motor, other drive mechanisms are not had between motor and the output shaft of polishing machine, have employed the structure that the present invention provides, do not lock between locking piece and flat 11 when normal use, main shaft 1 can be freely rotatable, when needs lock by the manual slider latch of operator, is engaged with flat 11 by locking piece.Flat 11 has pair of parallel side, the most just engages during slider latch, can manually pull rotating disk and be rotated back and forth by main shaft 1, thus finds suitable card stop bit to complete locking.Loosening locking piece when unlocking, under the effect of elastic component, locking piece automatically replies.
Embodiment one:
As it is shown on figure 3, the generalized section of a kind of concrete structure of direct-drive type electric angle grinder provided for the application.Under such configuration, locking piece is self-locking plate 31, and self-locking plate 31 is the platy structure of strip, and can slide in the chute on head capsule 2 in the two ends of self-locking plate 31, the plate face of self-locking plate 31 is perpendicular to the axis of main shaft 1.Self-locking plate 31 runs through the both sides of head capsule 2, on head capsule 2 slidably can arrange through hole in the centre of self-locking plate 31, and through hole can coordinate locking to complete locking in specific position with flat 11.The glide direction of self-locking plate 31 is through the axis of main shaft 1.The plate face width degree at self-locking plate 31 two ends is less than the width of mid portion, and the through hole that self-locking plate 31 mid portion is arranged is combination bore 312.As shown in Figure 4 and Figure 5, representing the fiting relation figure when not having self-locking and self-locking between flat 11 and the self-locking plate 31 on main shaft 1 respectively, the arrow in Fig. 5 represents pressure direction.When not locking, main shaft 1 is positioned at the circular port of combination bore 312, and when locking, main shaft 1 is positioned at the flat hole of combination bore 312, and flat hole connects with circular port and is collectively forming a complete combination bore 312.
On the basis of the above, it is vertically arranged the flap 311 being perpendicular to plate face in one end of self-locking plate 31, between flap 311 and protecgulum 4, elastic component is set, by the elastic force of elastic component, self-locking plate 31 is returned to initial release position, elastic component typically can be selected for spring, interfixes between protecgulum 4 and head capsule 2.Being provided for accommodating the groove of spring on protecgulum 4, Spring Card plays position-limiting action in groove.Locking piece in the present embodiment, namely self-locking plate 31 is between the stator and rotating disk of motor, self-locking plate 31 is arranged on the outfan of motor, and this structure is only a kind of concrete form, other positions that flat 11 is arranged on main shaft 1 are also possible, can realize the effect of locking equally.
Embodiment two:
As shown in Figure 6, the generalized section of the second concrete structure is represented.Fig. 7 represents the local structural graph of clamping block 32 part in Fig. 6, and Fig. 8 represents structure chart when clamping block 32 is pressed, and wherein arrow represents pressure direction.Flat 11 is arranged on the end of main shaft 1 in this embodiment, and locking piece is clamping block 32, and clamping block 32 is along the axial sliding movement of main shaft 1.Offering a passage accommodating clamping block 32 on head capsule 2, flat 11 is arranged on the end of main shaft 1, and clamping block 32 is just to main shaft 1, and stretching to main shaft 1 can coordinate with flat 11 insertion of end.Clamping block 32 is in lid, and bottom arranges groove, groove and the form fit of flat 11 on main shaft 1, both can mutually clamping, thus realize locking.Flat 11 in the present embodiment is opened in and end relative with the installation end of rotating disk on main shaft 1, accordingly, main shaft 1 stretches out spring bearing one segment length, is used for arranging flat 11.
The lateral wall of clamping block 32 is polygonal column or elliptical cylinder, as it is shown in figure 9, represent that clamping block 32 cross section is octagonal a kind of Facad structure figure.Chute on head capsule 2 coordinates spacing with clamping block 32, clamping block 32 is only capable of linearly sliding in chute, and cannot rotate in chute, as long as the cross section of clamping block 32 is not all possible for cylinder the most in theory, the chute shape of cross section on head capsule 2 and clamping block 32 corresponding matching.
Big up and small down stepped of clamping block 32, polygon or oval cross section can be arranged on ladder the most maximum, and this ladder directly contacts with chute.As it is shown in fig. 7, in order to prevent clamping block 32 from being ejected by elastic component, also set up the projection of a undersized up on ladder, outwardly for operator's pressing.Between clamping block 32 and head capsule 2, the elastic component of clamping is volute spring, the upper end of volute spring coordinates card to fill with the step size below clamping block 32 clamping block 32, the lower end of volute spring coordinates card to fill with the cavity of head capsule 2, upper end by spring by clamping block 32 clamping, lower end by the cavity on head capsule 2 by spring clamping, the lower section of chute is the support platform that bore is smaller, plays a supportive role volute spring.When compression, spring is not subjected to displacement, and the space limit effect of spring is more preferable, and stability during use is higher.
If the break-out materials such as head capsule 2 is plastics are made, the chute wall on head capsule 2 being installed wear ring, when clamping block 32 slides, incorrect shell 2 causes abrasion, if using the high-abrasive materials such as aluminium to make can be not provided with wear ring.
Embodiment three:
As shown in Figure 10, the sectional structure chart of the third embodiment is represented.Fixing card dress genlocing plate 33 in flat 11, genlocing plate 33 keeps being relatively fixed by flat 11 and main shaft 1, and genlocing plate 33 keeps Tong Bu rotation with main shaft 1.Eccentric setting fixing hole 331 on genlocing plate 33, the plate face of genlocing plate 33 is perpendicular to the axis of main shaft 1.Part of locking in the present embodiment is the telescopic mast 34 being slidably arranged on head capsule 2, telescopic mast 34 can slide on head capsule 2 relatively, can inject when telescopic mast 34 inwardly stretches out and stop genlocing plate 33 to rotate in fixing hole 331, main shaft 1 interacts with telescopic mast 34 thus realizes main shaft 1 and lock.The upper end of telescopic mast 34 is lid, installs spring, interacted reset with head capsule 2 in lid.The quantity of the fixing hole 331 on genlocing plate 33 can be one, it is possible to circumferentially arranges multiple, is preferably set up multiple, can rotate the less number of degrees and realize locking.The shape of fixing hole 31 is also not construed as limiting, it is ensured that telescopic mast 34 is inserted into.
On this basis, arranging insulating boot 332 in the outside of main shaft 1, between genlocing plate 33 and motor stator, insulating boot 332 is made up of insulant, and motor stator is risen insulating effect, and prevent from leaking electricity outwards conduction.Further, insulating boot 332 is fixed on the inside of head capsule 2, is fixed on the sleeve outside main shaft 1, and sleeve and insulating boot 332 keep static jointly, does not follow main shaft 1 and rotates.
Being provided with cavity between the middle part of insulating boot 332 and genlocing plate 33, the plate of insulating boot 33 is protruding towards motor stator side, and insulating effect is more preferable.
Other structures of direct-drive type electric angle grinder refer to prior art, and the present invention does not repeats them here.Using the direct-drive type electric angle grinder that the present invention provides, when changing disc, only pressing lock stop member realizes main shaft 1 and locks, and the most just can dismantle top board easily, change disc operate more convenient.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.Multiple amendment to these embodiments will be apparent from for those skilled in the art, and generic principles defined herein can realize without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (10)
1. a direct-drive type electric angle grinder, including the main shaft (1) directly driven by the stator of motor, described main shaft (1) and motor are installed in head capsule (2), it is characterized in that, the upper slip setting of milling flat (11) on the sidewall of described main shaft (1), described head capsule (2) or protecgulum (4) can coordinate locking or the locking piece loosened with described flat (11)；Arranging elastic component between described locking piece and described head capsule (2) or described protecgulum (4), described locking piece can be returned to initial relaxation state by described elastic component.
Direct-drive type electric angle grinder the most according to claim 1, it is characterized in that, described locking piece is the self-locking plate (31) of tabular, can slide in the chute on described protecgulum (4) in the two ends of described self-locking plate (31), the plate face of described self-locking plate (31) is perpendicular to the axis of described main shaft (1).
Direct-drive type electric angle grinder the most according to claim 2, it is characterized in that, the plate face width degree that the slip of described self-locking plate (31) two ends is plugged on described protecgulum (4) is less than mid portion, and the mid portion of described self-locking plate (31) offers combination bore (312).
4. according to the direct-drive type electric angle grinder described in Claims 2 or 3, it is characterized in that, one end of described self-locking plate (31) is perpendicular to plate face and arranges flap (311), arranges elastic component between described flap (311) and protecgulum (4).
Direct-drive type electric angle grinder the most according to claim 1, it is characterized in that, described flat (11) is arranged at the end of described main shaft (1), described locking piece is the clamping block (32) arranging lid along the axial sliding movement of described main shaft (1), and the bottom of described clamping block (32) is offered the described flat (11) with described main shaft (1) end and coordinated the groove of locking.
Direct-drive type electric angle grinder the most according to claim 5, it is characterized in that, the lateral wall of described clamping block (32) is polygon post or cylindroid, and the chute on described head capsule (2) coordinates spacing with described clamping block (32).
7. according to the direct-drive type electric angle grinder described in claim 5 or 6, it is characterised in that big up and small down stepped of described clamping block (32)；Clamping volute spring between described clamping block (32) and described head capsule (2), the upper end of described volute spring fills with the dimensional fits card of the ladder of described clamping block (32) lower section, and the lower end of described volute spring coordinates card to fill with the cavity of described head capsule (2).
Direct-drive type electric angle grinder the most according to claim 1, it is characterized in that, upper fixing card dress genlocing plate (33) of described flat (11), the upper eccentric setting fixing hole (331) of described genlocing plate (33), the plate face of described genlocing plate (33) is perpendicular to the axis of described main shaft (1)；Described locking piece is the telescopic mast (34) being slideably positioned on described head capsule (2), and described telescopic mast (34) can put in described fixing hole (331).
Direct-drive type electric angle grinder the most according to claim 8, it is characterised in that between described genlocing plate (33) and motor stator, insulating boot (332) is set.
Direct-drive type electric angle grinder the most according to claim 9, it is characterised in that between described insulating boot (332) middle part and described genlocing plate (33), there is cavity；Described insulating boot (332) is fixed on the static sleeve in described main shaft (1) outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610368835.1A CN105817979A (en) | 2016-05-27 | 2016-05-27 | Direct drive type angle grinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610368835.1A CN105817979A (en) | 2016-05-27 | 2016-05-27 | Direct drive type angle grinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105817979A true CN105817979A (en) | 2016-08-03 |
Family
ID=56532440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610368835.1A Pending CN105817979A (en) | 2016-05-27 | 2016-05-27 | Direct drive type angle grinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105817979A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109862998A (en) * | 2016-10-18 | 2019-06-07 | 罗伯特·博世有限公司 | Fast fixture for hand tool, especially angle grinder at least one driven shaft being rotatably driven |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109862998A (en) * | 2016-10-18 | 2019-06-07 | 罗伯特·博世有限公司 | Fast fixture for hand tool, especially angle grinder at least one driven shaft being rotatably driven |
| CN109862998B (en) * | 2016-10-18 | 2022-01-11 | 罗伯特·博世有限公司 | Quick-action clamping device for a portable power tool, in particular an angle grinder, having at least one rotatably driven shaft |
| US12017324B2 (en) | 2016-10-18 | 2024-06-25 | Robert Bosch Gmbh | Quick clamping device for a portable machine tool, in particular an angle grinder, comprising at least one output shaft that can be rotatably driven |
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Application publication date: 20160803 |