Hammer tool

A method of securing and maintaining a hammer tool to a hammer assembly of a work machine, the method comprising:

• providing the hammer assembly including a hammer housing and the hammer tool, the hammer housing including a hammer and a work chamber for receiving the hammer tool through an opening of the hammer housing, the work chamber having a plurality of splines and a locking ring;
• configuring the hammer tool to have a spline section and a tool section, the spline section including a first spline sector having at least six spline grooves and a second spline sector having at least six spline grooves, the first spline sector and the second spline sector being separated by a spacer, and the tool section having a smaller diameter than the spline section, the first spline sector, and the second spline sector, each of the at least six spline grooves of the second spline sector of the spline section transitioning directly into the tool section and sloping from the spline section diameter to the tool section diameter, and the tool section diameter is 3.2-4.8 times larger than a spline groove diameter of each of the spline grooves;
• inserting the hammer tool into the work chamber through the opening in the hammer housing;
• and
• rotating the locking ring around the hammer tool until in a locked state,
• wherein the locking ring separates a first set of splines of the hammer housing from a second set of splines of the hammer housing,
• wherein the locking ring is a ring having locking indents disposed across an interior of the locking ring and is configured to rotate around the spacer between a locked state and an unlocked state, whereby the locked state couples the hammer tool to the hammer housing,
• wherein the locking indents are one chosen from the group consisting of pyramidal, squared, and trapezoidal, and
• wherein the plurality of splines are wear rods having a circular cross-section at least at ends thereof facing toward the locking ring.

A hammer assembly comprising:

• a hammer;
• a hammer housing;
• and
• a work chamber in the hammer housing having a plurality of splines, a locking ring, a retainer ring, a hammer tool removably insertable in an opening in the hammer housing and into the work chamber,
• wherein the hammer tool includes:
• a spline section, and
• a tool section,
• wherein the spline section of the hammer tool includes:
• a first spline sector including at least six spline grooves, and
• a second spline sector including at least six splines,
• wherein the first spline sector and the second spline sector being are separated by a spacer,
• wherein the tool section has a tool section diameter,
• wherein the first spline sector and the second spline sector are larger in diameter than the tool section diameter,
• wherein the tool section diameter is smaller than a spline section diameter,
• wherein the spline section transitions directly into the tool section, sloping from the spline section diameter to the tool section diameter,
• wherein the tool section diameter is 3.2-4.8 times larger than a spline groove diameter of each of the spline grooves,
• wherein the locking ring is a ring having locking indents disposed across an interior of the locking ring and is configured to rotate around the spacer between a locked state and an unlocked state, whereby the locked state couples the hammer tool to the hammer housing,
• wherein the locking indents are one chosen from the group consisting of pyramidal, squared, and trapezoidal, and
• wherein the plurality of splines each have a circular cross-section at least at ends thereof facing toward the locking ring.