Polishing machine

Abstract

A polishing machine includes a housing, a motor, a main shaft rotatable about a first axis, a first execution assembly for connecting to a first accessory, wherein the first execution assembly includes a first rotation member and a first output, the first rotation member is configured for connecting to the main shaft and is movable about the first axis under driving of the main shaft in response to connecting to the main shaft, the first output member includes a first driving portion for connecting to the first accessory and is rotatable relative to the first rotation member about a second axis, and a limiting member movable between a first position at which the first rotation member is prevented from moving relative to the main shaft and a second position at which the first rotation member is allowed to move relative to the main shaft.

What is claimed is: 
     
         1 . A polishing machine, comprising:
 a housing comprising a handle portion for a user gripping;   a motor disposed in the housing;   a main shaft rotatable relative to the housing about a first axis;   a first execution assembly configured for connecting to a first accessory, wherein the first execution assembly comprises a first rotation member and a first output member, the first rotation member is configured for connecting to the main shaft, the first rotating member is capable of being driven by the main shaft to rotate about the first axis when connected with the main shaft, the first output member comprises a first driving portion for connecting with the first accessory so as to drive the first accessory to rotate about a second axis, and the second axis coincides with the first axis;   a second execution assembly configured for connecting to a second accessory, wherein the second execution assembly comprises a second rotation member and a second output member, the second rotation member is configured for connecting to the main shaft, the second rotating member is capable of being driven by the main shaft to rotate about the first axis when connected with the main shaft, the second output member comprises a second driving portion for connecting to the second accessory to drive the second accessory, the second output member is rotatable relative to the second rotation member about a third axis, the third axis is parallel to the first axis, and a distance between the third axis and the first axis is greater than or equal to 1 mm and less than or equal to 12 mm;   a limiting member movable between a first position and a second position, wherein the limiting member is configured to, in condition that the limiting member is at the first position, prevent the first rotation member or the second rotation member from moving relative to the main shaft; and the limiting member is further configured to, in condition that the limiting member is at the second position, allow the first rotation member or the second rotation member to move relative to the main shaft; and   an operation member configured to, in condition that the operation member is operated, allow the limiting operation to disengage from the first position.   
     
     
         2 . The polishing machine according to  claim 1 , further comprising a first biasing element configured to generate a biasing force for driving the operation member to reset. 
     
     
         3 . The polishing machine according to  claim 2 , wherein the housing comprises a head housing configured for accommodating the main shaft, the operation member is sleeved outside the head housing, and the operation member is slidable relative to the head housing along the first axis. 
     
     
         4 . The polishing machine according to  claim 3 , wherein the head housing is further fixedly connected with a guiding member, and the guiding member is configured for guiding the operation member to slide and is made of metal. 
     
     
         5 . The polishing machine according to  claim 4 , wherein the operation member surrounds the first axis, and the operation member protrudes downward out of the guiding member. 
     
     
         6 . The polishing machine according to  claim 3 , wherein the first biasing element is a spring at least part of which is sleeved outside the head housing, and the spring is located between the head housing and the operation member. 
     
     
         7 . The polishing machine according to  claim 3 , further comprising a transmission assembly configured for transmitting power between the motor and the main shaft and an inner housing configured for accommodating the transmission assembly and disposed in the housing, wherein both the operation member and the limiting member are disposed outside the inner housing. 
     
     
         8 . The polishing machine according to  claim 3 , wherein the limiting member is a sphere, the main shaft is formed with a driving hole for the first rotation member or the second rotation member inserting into, a hole wall of the driving hole is formed with an accommodating hole for accommodating at least part of the sphere, the sphere is movable to the first position and the second position along a first straight line perpendicular to the first axis in the accommodating hole, at least part of the sphere extends into the driving hole when the sphere is located at the first position, and the sphere is located outside the driving hole when the sphere is located at the second position. 
     
     
         9 . The polishing machine according to  claim 8 , further comprising a second biasing element configured to generate a biasing force for driving the limiting member to move toward the first position, and the second biasing element is a spring sleeved onto the main shaft. 
     
     
         10 . The polishing machine according to  claim 9 , wherein the first rotation member is formed with a first groove for receiving the sphere, and the second rotation member is formed with a second groove for receiving the sphere. 
     
     
         11 . The polishing machine according to  claim 1 , wherein the first output member and the first rotation member are integrally formed, and the first driving portion is a hole or a post centered on the first axis. 
     
     
         12 . The polishing machine according to  claim 1 , wherein the first driving portion is a hole or a post centered on the second axis, and the second driving portion is a hole or a post centered on the third axis. 
     
     
         13 . The polishing machine according to  claim 1 , further comprising a transmission assembly configured for transmitting power between the motor and the main shaft and an inner housing configured for accommodating the transmission assembly and disposed in the housing wherein the limiting member are disposed outside the inner housing. 
     
     
         14 . The polishing machine according to  claim 1 , further comprising a third execution assembly configured for connecting to a third accessory,
 wherein the third execution assembly comprises:   a third rotation member configured for connecting to the main shaft, wherein the third rotating member is capable of being driven by the main shaft to rotate about the first axis when connected with the main shaft; and   a third output member comprising a third driving portion which is configured for connecting to the third accessory to drive the third accessory, wherein the third output member is rotatable relative to the third rotation member about a fourth axis, the fourth axis is parallel to the first axis, and a distance between the fourth axis and the first axis is greater than or equal to 1 mm and less than or equal to 3 mm.   
     
     
         15 . A polishing machine, comprising:
 a housing comprising a handle portion for a user gripping;   a motor disposed in the housing;   a main shaft rotatable relative to the housing about a first axis;   a first execution assembly configured for connecting to a first accessory, wherein the first execution assembly comprises a first rotation member and a first output member, the first rotation member is configured for connecting to the main shaft, the first rotating member is capable of being driven by the main shaft to rotate about the first axis when connected with the main shaft, the first output member comprises a first driving portion for connecting to the first accessory to drive the first accessory, the first output member is rotatable relative to the first rotation member about a second axis, the second axis is parallel to the first axis, and a distance between the second axis and the first axis is greater than or equal to 1 mm and less than or equal to 3 mm;   a second execution assembly configured for connecting to a second accessory, wherein the second execution assembly comprises a second rotation member and a second output member, the second rotation member is configured for connecting to the main shaft, the second rotating member is capable of being driven by the main shaft to rotate about the first axis when connected with the main shaft, the second output member comprises a second driving portion for connecting to the second accessory to drive the second accessory, the second output member is rotatable relative to the second rotation member about a third axis, the third axis is parallel to the first axis, and a distance between the third axis and the first axis is greater than or equal to 1 mm and less than or equal to 12 mm;   a limiting member movable between a first position and a second position, wherein the limiting member is configured to, in condition that the limiting member is at the first position, prevent the first rotation member or the second rotation member from moving relative to the main shaft; and the limiting member is further configured to, in condition that the limiting member is at the second position, allow the first rotation member or the second rotation member to move relative to the main shaft; and   an operation member configured to, in condition that the operation member is operated, allow the limiting operation to disengage from the first position.   
     
     
         16 . The polishing machine according to  claim 15 , wherein the distance between the second axis and the first axis is less than the distance between the third axis and the first axis. 
     
     
         17 . The polishing machine according to  claim 15 , further comprising a first biasing element configured to generate a biasing force for driving the operation member to reset, wherein the housing comprises a head housing configured for accommodating the main shaft, the first biasing element is a spring at least part of which is sleeved outside the head housing, the spring is located between the head housing and the operation member, the operation member is sleeved outside the head housing, and the operation member is slidable relative to the head housing along the first axis. 
     
     
         18 . The polishing machine according to  claim 17 , wherein the head housing is further fixedly connected with a guiding member, and the guiding member is configured for guiding the operation member to slide and is made of metal, and the operation member surrounds the first axis, and protrudes downward out of the guiding member. 
     
     
         19 . The polishing machine according to  claim 15 , further comprising a transmission assembly configured for transmitting power between the motor and the main shaft and an inner housing configured for accommodating the transmission assembly and disposed in the housing wherein both the operation member and the limiting member are disposed outside the inner housing. 
     
     
         20 . A polishing machine, comprising:
 a housing comprising a handle portion for a user gripping;   a motor disposed in the housing;   a main shaft rotatable relative to the housing about a first axis;   a first execution assembly configured for connecting to a first accessory, wherein the first execution assembly comprises a first rotation member and a first output member, the first rotation member is configured for connecting to the main shaft, the first rotating member is capable of being driven by the main shaft to rotate about the first axis when connected with the main shaft, the first output member comprises a first driving portion for connecting to the first accessory to drive the first accessory, the first output member is rotatable relative to the first rotation member about a second axis, the second axis is parallel to the first axis, and a distance between the second axis and the first axis is greater than or equal to 1 mm and less than or equal to 12 mm;   a limiting member movable between a first position and a second position, wherein the limiting member is configured to, in condition that the limiting member is at the first position, prevent the first rotation member from moving relative to the main shaft; and the limiting member is further configured to, in condition that the limiting member is at the second position, allow the first rotation member to move relative to the main shaft; and   an operation member configured to, in condition that the operation member is operated, allow the limiting operation to disengage from the first position.