CN218697216U - Grinder convenient to bottom plate is accurate to be counterpointed installation - Google Patents

Abstract

The utility model discloses a grinder convenient to bottom plate accuracy is to location installation belongs to electronic grinding tool field. The utility model discloses a sander, including sander organism, bottom plate and counterpoint locking mechanical system, the sander organism has power take off spare, and counterpoint locking mechanical system has the inserted bar that can switch at lock-out state and unblock state, has a counterpoint groove on the power take off spare. In a locking state, an inserted link of the alignment locking mechanism is inserted into the alignment groove to keep the power output member at the alignment position of the quick assembly mechanism; and under the unlocking state, the inserted rod of the alignment locking mechanism exits the alignment groove. The utility model realizes the position locking of the power output part of the sander by utilizing the alignment locking mechanism, can quickly determine the accurate installation position of the power output part and the bottom plate, and can prevent the power output part from rotating when the bottom plate is installed, so that the installation operation of the bottom plate is simpler and more convenient, and the operation is flexible and quick; meanwhile, the structure design is simple and compact, the manufacture is convenient, and the manufacture cost is low.

Description

Grinder convenient to bottom plate is accurate to be counterpointed installation

Technical Field

The utility model relates to a grinding tool, more specifically say, relate to a grinder convenient to bottom plate accuracy is to location installation.

Background

When a workpiece is ground or polished, grinding tools such as a sander and the like are commonly used, and are popular among users due to convenience and flexibility. The sander has a casing with a driving unit connected via a transmission unit to a working bottom plate, and a bottom plate with abrasive material such as sand paper. When the grinding machine works, the driving device drives the bottom plate assembly to eccentrically or rotationally move, the bottom plate accessory attached to the bottom plate assembly correspondingly moves, and the working surface is ground, so that the working surface is smooth and flat.

To different work environment of polishing, can select the bottom plate of different shapes usually on the grinder, for example rectangle, circular, triangle-shaped etc. for satisfy different sand light operating mode, consequently require the grinder to have the function that the bottom plate was easily torn open and is traded. Chinese patent No. ZL201821738178.6 discloses "a grinder bottom plate easily removable mechanism and use its grinder", its bottom plate easily removable mechanism locates between the connecting seat of grinder bottom plate and grinder, including installing the locking lever on the grinder bottom plate and locating the pothook of connecting seat lower part, the working part of locking lever rotates and installs on the upper portion of grinder bottom plate connecting end, and the working part of locking lever be equipped with can through rotate the locking lever and with the pothook lock on the connecting seat or the buckling part that breaks away from, the one end of locking lever still is equipped with and is used for driving the operating handle of working part pivoted. This patent application utilizes locking lever and pothook cooperation to realize the quick connection and tear open of bottom plate and grinder organism and trade, and the structure sets up simply, assembly convenient operation.

However, when the installation grinder bottom plate, need aim at locking lever on the grinder bottom plate and the pothook on the grinder organism connecting seat, and in the actual operation process, the position that the connecting seat of grinder stopped at every turn is uncertain, consequently leads to grinder bottom plate and grinder connecting seat to counterpoint the difficulty, needs the angle of manual adjustment connecting seat repeatedly, especially to revolution track bottom plates such as triangle and rectangle, both need to guarantee locking lever and pothook and aim at, also need to guarantee bottom plate and swing support frame accurate alignment, the operation of changing the grinder bottom plate for the consumer brings a great deal of puzzlement.

In view of the above, an effective technical solution is needed to ensure the quick positioning and assembling of the base plate and the sander for the above technical problems of the sander in which the power output member and the base plate of the sander need to be installed in alignment.

Disclosure of Invention

1. Technical problem to be solved by the utility model

The utility model aims to overcome the defects of the existing quick-change bottom plate sander, and provides a sander convenient for accurate and aligned installation of a bottom plate, and by adopting the technical scheme of the utility model, the position of a power output part of the sander is locked by using an alignment locking mechanism, the accurate installation positions of the power output part and the bottom plate can be quickly determined, and the power output part can be prevented from rotating when the bottom plate is installed, so that the installation operation of the bottom plate is simpler and more convenient, and the operation is flexible and quick; meanwhile, the structure design is simple and compact, the manufacture is convenient, and the manufacture cost is low.

2. Technical scheme

In order to achieve the above purpose, the utility model provides a technical scheme does:

the utility model discloses a sander convenient to accurate counterpoint installation of bottom plate, including sander organism and bottom plate, the sander organism has power take off, the bottom plate adopts quick-assembling mechanism detachably to install on power take off, still includes counterpoint locking mechanical system, counterpoint locking mechanical system has the inserted bar that can switch between locking state and unblock state, power take off has a counterpoint groove with above-mentioned inserted bar matched with;

in a locking state, an inserted link of the alignment locking mechanism is inserted into the alignment groove to keep the power output piece at the alignment position of the quick assembly mechanism;

and in an unlocking state, the inserted rod of the alignment locking mechanism exits the alignment groove to enable the power output part to be in a free state.

Furthermore, the base plate comprises a random track base plate and a revolution track base plate, and for the revolution track base plate, when the power output piece is in a locked state, the fast-assembling mechanism between the power output piece and the revolution track base plate keeps in an aligned position, and meanwhile, the revolution track base plate and the lower end of the swing support frame on the sander body also keep in an aligned position.

Furthermore, the power output part is mounted on an eccentric shaft of the sander body through a bearing, and a bottom plate positioning connecting part used for being connected with a bottom plate is arranged at the lower part of the power output part.

Furthermore, the quick-assembly mechanism comprises a lock rod arranged on the bottom plate and a clamping hook arranged on the power output piece, and the bottom plate is buckled on the clamping hook through the lock rod to realize the quick-assembly connection of the bottom plate and the power output piece.

Furthermore, the alignment locking mechanism is an alignment locking assembly arranged on the sander body shell.

Furthermore, counterpoint locking Assembly includes the button, counterpoints inserted bar and spring, the button is installed in one side of shell by the shell inboard of grinder organism, the spring is located in the button to be located between the shell of button and grinder organism, the one end of counterpoint inserted bar is fixed on the button, and the other end is towards power take off spare and shell direction cooperation.

Further, counterpoint locking Assembly includes the button, counterpoints inserted bar and spring, counterpoint inserted bar is installed on the shell of grinder organism towards power take off piece direction, the button is fixed in the one end that counterpoint inserted bar is located the shell outside, and the one end that counterpoint inserted bar is located the shell inboard has and is used for spacing portion of inserted bar, the spring housing is established on counterpointing the inserted bar, and the spring is located between the shell of button and grinder organism.

Furthermore, the alignment locking mechanism is an alignment pin piece which is separated from the sander body, one end of the alignment pin piece is an insertion rod, a jack facing the power output piece is arranged on a shell of the sander body, and the insertion rod of the alignment pin piece can penetrate through the jack to be in insertion fit with an alignment groove in the power output piece.

3. Advantageous effects

Adopt the technical scheme provided by the utility model, compare with existing well-known technique, have following beneficial effect:

(1) The utility model discloses a grinder convenient to accurate counterpoint installation of bottom plate, it includes the grinder organism, bottom plate and counterpoint locking mechanical system, the grinder organism has power take off spare, the bottom plate adopts quick-assembling mechanism detachably to install on power take off spare, counterpoint locking mechanical system has the inserted bar that can switch between locking state and unblock state, power take off spare is last to have one with above-mentioned inserted bar matched with counterpoint groove, utilize counterpoint locking mechanical system to realize the power take off spare position locking of grinder, can confirm the accurate mounted position of power take off spare and bottom plate fast, and can prevent power take off spare rotation when the bottom plate is installed, make the mounting operation of bottom plate simpler and more convenient, the flexible operation is swift; meanwhile, the structure design is simple and compact, the manufacture is convenient, and the manufacture cost is low;

(2) The utility model discloses a grinder convenient to accurate counterpoint installation of bottom plate, its bottom plate includes random track bottom plate and revolution track bottom plate, and to revolution track bottom plate, under power take off spare is in the locking condition, the fast-assembling mechanism between power take off spare and the revolution track bottom plate keeps the alignment position, and revolution track bottom plate also keeps the alignment position with the swing support frame lower extreme on the grinder organism simultaneously, has further made things convenient for the quick installation of bottom plate on the grinder organism, and the installation is counterpointed accurately high-efficiently;

(3) The utility model discloses a grinder convenient to bottom plate accurate counterpoint installation, its power take off spare is installed on the eccentric shaft of grinder organism through the bearing, and the lower part of power take off spare is equipped with the bottom plate location connecting portion that is used for being connected with the bottom plate, can guarantee bottom plate connection stability, can further make things convenient for the counterpoint connection of fast-assembling mechanism simultaneously;

(4) The utility model discloses a sander convenient to bottom plate accurate counterpoint installation, its fast-assembling mechanism includes the locking lever of locating on the bottom plate and the pothook of locating on the power take off spare, and the bottom plate realizes the fast-assembling of bottom plate and power take off spare to be connected on the pothook through the locking lever lock, utilizes locking lever and pothook cooperation to realize the quick connection and the removal and replacement of bottom plate and sander organism, and the connection is convenient, and firm in connection is reliable;

(5) The utility model discloses a sander convenient for accurate alignment installation of a bottom plate, a positioning locking mechanism of the sander is a positioning locking component arranged on a sander body shell, thus realizing integration of bottom plate alignment functions and facilitating use of users; the alignment locking assembly comprises a button, an alignment insertion rod and a spring, and when the sander is normally used, the alignment insertion rod is kept in an unlocking state under the action of the spring, so that the working stability and reliability of the sander can be ensured;

(6) The utility model discloses a grinder convenient to accurate counterpoint installation of bottom plate, its counterpoint locking mechanical system be with the counterpoint bolt spare of grinder organism separation setting, the one end of counterpoint bolt spare is the inserted bar, be equipped with the jack towards power take off spare on the shell of grinder organism, the inserted bar of counterpoint bolt spare can pass the cooperation of pegging graft of counterpoint groove on jack and the power take off spare, adopt the counterpoint bolt spare of components of a whole that can function independently design, can adopt the current work piece that has the inserted bar to realize the counterpoint operation of power take off spare, implement more simple and conveniently, be favorable to reducing the cost of manufacture of grinder.

Drawings

Fig. 1 is a schematic view of a three-dimensional structure of a sanding machine convenient for accurate positioning and installation of a base plate in embodiment 1 of the present invention;

fig. 2 is a schematic side view of a sander for facilitating accurate positioning and installation of a base plate according to embodiment 1 of the present invention;

FIG. 3 is an enlarged view of a partial cross-sectional view of FIG. 2;

fig. 4 is a schematic structural view of a power output member of a sanding machine convenient for accurate alignment installation of a base plate in embodiment 1 of the present invention;

fig. 5 is a schematic perspective view of a sanding machine for facilitating accurate positioning and installation of a base plate according to embodiment 2 of the present invention;

fig. 6 is a schematic view of a front side structure of a sander for facilitating accurate alignment and installation of a base plate according to embodiment 2 of the present invention;

FIG. 7 is an enlarged view of a portion of the cross-sectional view of FIG. 6;

fig. 8 is a schematic perspective view of a sander for facilitating accurate positioning and installation of a base plate according to embodiment 3 of the present invention;

fig. 9 is a schematic side view of a sander for facilitating accurate positioning and installation of a base plate according to embodiment 3 of the present invention;

FIG. 10 is an enlarged view of a partial cross-sectional view of FIG. 9;

fig. 11 is a usage state diagram of the alignment pin member of the sander according to embodiment 3 of the present invention, which facilitates the installation of the base plate in the accurate alignment.

The reference numerals in the schematic drawings illustrate:

1. a sander body; 1-1, a power output member; 1-1a, a registration slot; 1-1b, a bottom plate positioning connecting part; 1-2, swinging a support frame; 1-3, a jack; 2. a base plate; 3. aligning and locking the components; 3-1, a button; 3-1a, a button flange; 3-2, aligning the inserted rod; 3-2a, an inserted rod limiting part; 3-3, a spring; 4. and aligning the bolt piece.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

[ example 1]

As shown in fig. 1 to fig. 3, the sander convenient for accurate base plate alignment installation of the embodiment includes a sander body 1, a base plate 2 and an alignment locking mechanism, the sander body 1 has a power output member 1-1, the power output member 1-1 is driven by a motor in the sander body 1 to perform eccentric rotation, the base plate 2 is detachably installed on the power output member 1-1 by a quick-mounting mechanism, and the power output member 1-1 drives the base plate 2 to move to polish and polish a surface to be polished. The base plate 2 can be mounted and dismounted on the power output part 1-1, and different base plates can be selected according to different operation requirements. The base plate 2 needs to be aligned when being installed, the alignment locking mechanism is provided with an inserted rod which can be switched between a locking state and an unlocking state, the power output part 1-1 is provided with an alignment groove 1-1a matched with the inserted rod, and the alignment locking mechanism can be utilized to quickly enable the base plate 2 to be corresponding to the power output part 1-1, so that the base plate 2 can be conveniently and quickly installed. Specifically, in a locking state, an inserted link of the alignment locking mechanism is inserted into an alignment groove 1-1a to keep the power output part 1-1 at the alignment position of the quick assembly mechanism; in the unlocking state, the inserted link of the alignment locking mechanism exits the alignment groove 1-1a to enable the power output part 1-1 to be in a free state.

Different from the design of the main shaft locking mechanism of the existing sander, the existing main shaft locking mechanism can only fix the motor shaft, and the power output part 1-1 can freely rotate on the motor shaft, so that the alignment relation between the power output part 1-1 and the bottom plate 2 cannot be ensured even if only the main shaft is locked. In the embodiment, the position of the power output part 1-1 of the sander is locked by utilizing the alignment locking mechanism, the accurate installation positions of the power output part 1-1 and the bottom plate 2 can be quickly determined, and the power output part 1-1 can be prevented from rotating when the bottom plate 2 is installed, so that the installation operation of the bottom plate 2 is simpler and more convenient, and the operation is flexible and quick; meanwhile, the structure design is simple and compact, the manufacture is convenient, and the manufacture cost is low.

The sander convenient for accurate alignment installation of the base plate can be matched with different base plates 2 for use, so that the base plates 2 are very necessary to be installed and detached on the sander body by adopting a quick-assembly mechanism. The bottom plate 2 comprises a random orbit bottom plate and a revolution orbit bottom plate, wherein the random orbit bottom plate is generally a circular bottom plate which can perform revolution motion around an eccentric shaft and can also perform rotation motion; the revolution orbit base plate is generally a rectangular base plate or a triangular base plate and the like, the rotation motion of the revolution orbit base plate is limited by the swing support frame, and the revolution orbit base plate can only revolve around the eccentric shaft. For the revolution orbit base plate, when the power output piece 1-1 is in a locking state, the fast assembly mechanism between the power output piece 1-1 and the revolution orbit base plate keeps an alignment position, and meanwhile, the revolution orbit base plate and the lower end of the swing support frame 1-2 on the sander body 1 also keep the alignment position. Like this, can further make things convenient for the quick installation of bottom plate 2 on grinder organism 1, the installation is counterpointed accurately high-efficiently.

Referring to fig. 4, in the embodiment, the power output member 1-1 is mounted on the eccentric shaft of the sander body 1 through a bearing, and the power output member 1-1 can freely rotate on the eccentric shaft. The lower part of the power output part 1-1 is provided with a bottom plate positioning connecting part 1-1b used for being connected with a bottom plate 2, and the bottom plate positioning connecting part 1-1b can be a positioning pin and the like, so that the connection stability of the bottom plate can be ensured, and meanwhile, the alignment connection of the quick assembly mechanism can be further facilitated. The quick-assembling mechanism in the embodiment is a mechanism for quickly connecting the base plate 2 with the sander, and does not comprise an existing hoisting bolt connecting structure, because the hoisting bolt penetrates through the base plate and is directly connected with an eccentric shaft or a motor shaft, the requirement of an alignment locking mechanism is not needed. Specifically, in this embodiment, the quick-assembly mechanism includes a lock lever disposed on the bottom plate 2 and a hook disposed on the power output member 1-1, and the bottom plate 2 is fastened to the hook by the lock lever to realize the quick-assembly connection between the bottom plate 2 and the power output member 1-1. The locking rod and the clamping hook are matched to realize the quick connection and the quick disconnection of the bottom plate 2 and the sander body 1, the connection operation is convenient, and the connection is firm and reliable. The specific structure of the quick-assembly mechanism can refer to 'an easily-detachable and replaceable mechanism for a base plate of a sander and a sander using the same' disclosed in chinese patent No. ZL201821738178.6, and a description thereof is omitted here.

Referring to fig. 1 to 3, in the sander convenient for installing a base plate in an accurate alignment manner according to the present embodiment, the alignment locking mechanism is an alignment locking component 3 disposed on a housing of the sander body 1. The alignment locking mechanism is designed on the machine body shell, so that the integration of the alignment function of the bottom plate 2 can be realized, and the use by a user is facilitated. Specifically, the alignment locking assembly 3 comprises a button 3-1, an alignment insertion rod 3-2 and a spring 3-3, wherein the button 3-1 is arranged on one side of the shell from the inner side of the shell of the sander body 1, the spring 3-3 is arranged in the button 3-1 and is positioned between the button 3-1 and the shell of the sander body 1, so that the button 3-1 has an outward elastic trend, and a button retaining edge 3-1a is further arranged on the inner side of the button 3-1 to ensure that the button 3-1 is not separated from the sander body 1, so that the button 3-1 can be stably limited in the body shell. One end of the alignment inserted bar 3-2 is fixed on the button 3-1, and the other end faces the power output part 1-1 and is matched with the shell in a guiding way. The shell is provided with a guide hole matched with the alignment inserted bar 3-2, the alignment inserted bar 3-2 can be a metal piece and can be integrally formed with the button 3-1 by injection molding or assembled together by a pin shaft, the alignment inserted bar 3-2 penetrates into the guide hole, when the button 3-1 is pressed, the end part of the alignment inserted bar 3-2 can be driven to move forwards, when the alignment groove 1-1a of the power output part 1-1 rotates to correspond to the position of the alignment inserted bar 3-2, the alignment inserted bar 3-2 is inserted into the alignment groove 1-1a of the power output part 1-1, and the power output part 1-1 is locked. And when the sander is normally used, the alignment insert rod 3-2 is kept in an unlocked state under the action of the spring 3-3, so that the working stability and reliability of the sander can be ensured.

[ example 2]

As shown in fig. 5 to 7, the basic structure and the operation principle of the sander for facilitating the accurate alignment and installation of the base plate in this embodiment are the same as those of embodiment 1, except that:

in this embodiment, the alignment locking assembly 3 includes a button 3-1, an alignment insert rod 3-2 and a spring 3-3, the alignment insert rod 3-2 is installed on the housing of the sander body 1 in a guiding manner toward the power output member 1-1 and can slide toward the power output member 1-1, the button 3-1 is fixed at one end of the alignment insert rod 3-2 located outside the housing, one end of the alignment insert rod 3-2 located inside the housing has an insert rod limiting portion 3-2a for limiting, the insert rod limiting portion 3-2a can be an upset head structure with a diameter slightly larger than that of the alignment insert rod 3-2, so as to ensure that the alignment insert rod 3-2 does not separate from the housing of the sander body 1, the spring 3-3 is sleeved on the alignment insert rod 3-2, and the spring 3-3 is located between the button 3-1 and the housing of the sander body 1, so that the alignment insert rod 3-2 keeps a tendency of moving outward. When the bottom plate is installed, the button 3-1 is pressed inwards, the inner end of the alignment insertion rod 3-2 abuts against the outer wall of the power output part 1-1, the power output part 1-1 is rotated, and when the alignment groove 1-1a in the power output part 1-1 corresponds to the alignment insertion rod 3-2, the alignment insertion rod 3-2 is inserted into the alignment groove 1-1a to lock the power output part 1-1. After the installation is finished, the button 3-1 is loosened, the alignment inserted bar 3-2 exits from the alignment groove 1-1a under the action of the spring 3-3, and the power output part 1-1 can rotate freely.

By adopting the structural design, only mounting holes are needed to be arranged at the corresponding positions of the shell of the sander body 1 and the power output part 1-1 with the alignment grooves 1-1a is needed to be replaced, the structural change of the original sander is less, and the manufacturing cost of the sander is favorably reduced.

[ example 3]

As shown in fig. 8 to 11, the basic structure and the operation principle of the sander for facilitating the accurate alignment and installation of the base plate in this embodiment are the same as those of embodiment 1, except that:

in this embodiment, the alignment locking mechanism is an alignment pin 4 disposed separately from the sander body 1. One end of the alignment plug piece 4 is an insertion rod, a shell of the sander body 1 is provided with an insertion hole 1-3 facing the power output piece 1-1, and the insertion rod of the alignment plug piece 4 can penetrate through the insertion hole 1-3 to be in insertion fit with an alignment groove 1-1a on the power output piece 1-1. The alignment plug piece adopting the split design can realize the alignment operation of the power output piece by adopting the existing workpiece with the plug rod, is simpler and more convenient to implement and is beneficial to reducing the manufacturing cost of the sander.

Specifically, a jack 1-3 corresponding to the alignment groove 1-1a is arranged on a shell of the sander body 1, when the base plate 2 is installed, a plug rod part of the alignment plug pin piece 4 is inserted into the jack 1-3 and abuts against the side wall of the power output piece 1-1, the power output piece 1-1 is rotated, and when the alignment groove 1-1a corresponds to the plug rod of the alignment plug pin piece 4, the alignment plug pin piece 4 can be inserted into the alignment groove 1-1a, so that the power output piece 1-1 is locked. After the installation is finished, the alignment bolt piece 4 is pulled out. In order to facilitate manufacturing and operation, the alignment pin piece 4 can be formed by bending a metal wire, and a retaining ring can be formed at the rear end of the alignment pin piece 4, so that the operation and the storage are convenient. Of course, in actual use, a rod having a diameter corresponding to the diameter of the insertion rod may be used instead of the alignment pin 4.

By adopting the structural design, only the jacks 1-3 are arranged at the corresponding positions of the shell of the sander body 1 and the power output part 1-1 with the alignment grooves 1-1a is replaced, so that the structure is simpler, the original sander can be conveniently structurally modified, and the manufacturing cost is low.

Other components and principles of the sander, not described, are similar to those of the prior art and will not be described further herein.

The utility model discloses a grinder convenient to bottom plate accurate contraposition installation utilizes counterpoint locking mechanical system to realize the power take off spare position locking of grinder, can confirm the accurate mounted position of power take off spare and bottom plate fast to can prevent power take off spare rotation when the bottom plate is installed, make the installation operation of bottom plate more simple and convenient, the flexible operation is swift; meanwhile, the structure design is simple and compact, the manufacture is convenient, and the manufacture cost is low.

The present invention and its embodiments have been described above schematically, and the description is not intended to be limiting, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching of the present invention, the technical scheme and the embodiments similar to the technical scheme are not creatively designed without departing from the spirit of the present invention, and the present invention shall fall into the protection scope of the present invention.

Claims (8)

1. The utility model provides a grinder convenient to bottom plate accurate alignment installation, includes grinder organism (1) and bottom plate (2), grinder organism (1) has power take off spare (1-1), bottom plate (2) adopt fast-assembling mechanism detachably to install on power take off spare (1-1), its characterized in that: the power output part (1-1) is provided with a positioning groove (1-1 a) matched with the inserted rod;

in a locking state, an inserted link of the alignment locking mechanism is inserted into an alignment groove (1-1 a) to keep the power output part (1-1) at the alignment position of the quick assembly mechanism;

in an unlocking state, the inserted link of the alignment locking mechanism exits the alignment groove (1-1 a) to enable the power output part (1-1) to be in a free state.

2. The sander for facilitating accurate aligned mounting of a base plate as set forth in claim 1, wherein: the base plate (2) comprises a random track base plate and a revolution track base plate, and for the revolution track base plate, when the power output piece (1-1) is in a locking state, the fast assembly mechanism between the power output piece (1-1) and the revolution track base plate keeps in an alignment position, and meanwhile, the revolution track base plate and the lower end of a swing support frame (1-2) on the sander body (1) also keep in the alignment position.

3. The sander for facilitating accurate aligned mounting of a base plate as set forth in claim 2, wherein: the power output piece (1-1) is arranged on an eccentric shaft of the sander body (1) through a bearing, and a bottom plate positioning connecting part (1-1 b) used for being connected with the bottom plate (2) is arranged at the lower part of the power output piece (1-1).

4. The sander for facilitating accurate aligned mounting of a base plate as set forth in claim 3, wherein: the quick-assembly mechanism comprises a lock rod arranged on the bottom plate (2) and a clamping hook arranged on the power output piece (1-1), and the bottom plate (2) is buckled on the clamping hook through the lock rod to realize the quick-assembly connection of the bottom plate (2) and the power output piece (1-1).

5. The sander for facilitating floor alignment installation as set forth in any one of claims 1 to 4, wherein: the alignment locking mechanism is an alignment locking assembly (3) arranged on the shell of the sander body (1).

6. The sander for facilitating accurate aligned mounting of a base plate as set forth in claim 5, wherein: counterpoint locking Assembly (3) include button (3-1), counterpoint inserted bar (3-2) and spring (3-3), button (3-1) is installed in one side of shell by the shell inboard of grinder organism (1), button (3-1) is located in spring (3-3) to be located between the shell of button (3-1) and grinder organism (1), the one end of counterpointing inserted bar (3-2) is fixed on button (3-1), and the other end is towards power take off spare (1-1) and shell direction cooperation.

7. The sander for facilitating accurate aligned mounting of a base plate as set forth in claim 5, wherein: counterpoint locking Assembly (3) include button (3-1), counterpoint inserted bar (3-2) and spring (3-3), counterpoint inserted bar (3-2) are installed on the shell of grinder organism (1) towards power take off spare (1-1) direction, button (3-1) are fixed and are being counterpointed the one end that inserted bar (3-2) are located the shell outside, and counterpoint inserted bar (3-2) are located the inboard one end of shell and have and are used for spacing inserted bar spacing portion (3-2 a), spring (3-3) cover is established on counterpoint inserted bar (3-2), and spring (3-3) are located between the shell of button (3-1) and grinder organism (1).

8. The sanding machine for facilitating accurate, aligned setting of a sanding block as defined in any one of claims 1 to 4, wherein: the aligning locking mechanism is an aligning plug pin piece (4) which is separated from the sander body (1), one end of the aligning plug pin piece (4) is an inserting rod, a jack (1-3) facing the power output piece (1-1) is arranged on the shell of the sander body (1), and the inserting rod of the aligning plug pin piece (4) can penetrate through the jack (1-3) to be in inserting fit with an aligning groove (1-1 a) on the power output piece (1-1).

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