TRANSMISSION STRUCTURE OF THE STONE CHAMFERING MACHINE TOOL HOLDER

• US 20090142999A1
• Filed: 12/04/2007
• Published: 06/04/2009
• Est. Priority Date: 12/04/2007
• Status: Active Grant

• Current Assignee: Kung-Cheng Lo
• Original Assignee: Kung-Cheng Lo
• Inventors: LO, Kung-Cheng
• Granted Patent: US 7,534,164 B1
• Time in Patent Office: Days
• US Class Current: 451/362
• CPC Class Codes: B24B 27/0061 having several tools on a revolving tools box
• CPC Class Codes: B24B 9/06 of non-metallic inorganic material, e.g. stone, ceramics, porcelain

Abstract

A tool holder transmission structure of a stone chamfering machine which is mainly characterized in that a transmission motor is installed at downward offset position inside the frame of the stone chamfering machine, whereof the transmission gear installed on the spindle of the said motor is through the bottom cut slot of the centered convex block at side plate of the frame to engage with the bottom tool driven gear of the multi-axis tool holder, whereby through rotation of the tool holder, different tool driven gear can be changed to engage with the motor transmission gear. Therefore, it is particularly useful to select different tools for stone chamfering operation according to practical needs.

Claims

1. A tool holder transmission structure of a stone chamfering machine, comprising:

a handle

a plurality of tool assemblies, each having a spindle, a driven gear attached to an inner end of the spindle, a tool attached to an outer end of the spindle, a bearing and a bearing cover;

a compacting handle having a limit ratchet gear installed therein;

a limit ratchet wheel which is engaged with and driven by the limit ratchet gear;

a tool holder having a centered through hole, and having the tool assemblies installed thereon, an inside face of the tool holder having a plurality of preset positioning holes, the tool holder being a polygonal shell and having a shaft hole disposed at each respective side, each shaft hole having a respective spindle and bearing therein, each shaft hole being sealed at an outside thereof by a respective bearing cover;

a flexible water hose that is extendable to a position of a respective tool for spraying water to an operating zone of the tool in order to reduce a surrounding temperature and to avoid dusting;

a frame having a side plate that guards the driven gears, the side plate being covered by said tool holder, the side plate having a pin seat;

an elastic lockpin which is pushed by a spring inside the pin seat to protrude past an end face of the side plate, the elastic lockpin having a pull rod;

a transmission motor is installed inside of said frame, and having a spindle, the respective tool being driven by the transmission motor to do a chamfering operation on stones, the transmission motor further having a transmission gear installed on the spindle, said transmission gear having one end exposed outside through said side plate of said frame to form a motion linkage by engaging with a respective driven gear of the respective tool;

a convex block installed on the side plate, a bottom of the convex block having a cut slot to allow the transmission gear to be partially exposed;

a movable base having a bottom of the frame installed thereon, the movable base having a pair of support posts at two sides thereof to connect with the handle, one of the support posts at one side of the movable base being horizontally pierced through with a through hole to connect with the flexible water hose;

wherein the transmission motor is installed with a downward offset so as to provide an eccentric relationship between the transmission gear and the convex block; and

a screwed bolt is installed at one end of the convex block, the screwed bolt passing through the centered through hole of the tool holder a middle screwed section of the screwed bolt being engaged with the a limit ratchet wheel, wherein when the compacting plate handle is rotated, the limit ratchet clear causes the limit ratchet wheel to turn on the middle screwed section to push the tool holder, frame and side plate into a complete matching relationship, the elastic lockpin being engagable with a respective positioning hole when the holder, frame and side plate are in the matching relationship to restrain the tool holder from rotation, the elastic lockpin being retreatable out of the positioning hole of the tool holder by pulling the pull rod, and the limit ratchet wheel being reversely rotatable by the compacting plate handle to lessen a compression on the tool holder to allow the tool holder to be rotated to change its position.

2. The tool holder transmission structure of the stone chamfering machine as in claim 1, further comprising a plurality of elastic positioning pins and spring pairs, each elastic positioning pin and spring pair being respectively installed at a position corresponding to each spindle on the tool holder, each spindle being provided with at least one positioning cavity to let the respective elastic positioning pin lock into it so as to prevent the spindle from turning thereby providing easy mounting/dismounting of the tool, the spring of each pair being sleeved over the respective elastic positioning pin to push back the elastic positioning pin after a pressing force is removed to release the spindle back to its original rotating status.

3. The tool holder transmission structure of the stone chamfering machine as in claim 1, whereof the cut slot is extended in a concave arc between its two ends.

4. (canceled)