Nibbler

Abstract

A nibbler ( 10 ) includes: an elongated punch ( 30 ) that reciprocates in an axial direction; a die ( 50 ) having a first through-hole ( 51 ) into which a tip of the punch is insertable; a die holder ( 40 ) having a recess ( 42 ) in which the die is housed, a tip portion ( 43 ) located farther from the punch in the axial direction than the recess, and a second through-hole ( 41 ) that communicates with the first through-hole; and a chip collection attachment ( 100 ). The chip collection attachment includes a tubular mounting part ( 100 ) that is removably attached to the tip portion, and a bottomed tubular receptacle part ( 120 ) that stores chips guided through the first and second through-holes, and the interior of the mounting part. The outer diameters of the mounting part and of the receptacle part are substantially the same as or less than the outer diameter of the tip portion.

1 . A nibbler, comprising:
 an elongated punch that extends in an axial direction and is capable of reciprocating in the axial direction,   a die having a first through-hole into which a tip of the punch is insertable,   a die holder having a recess in which the die is housed, a tip portion located farther from the punch than the recess in the axial direction, and a second through-hole that communicates with the first through-hole, and   a chip collection attachment,   wherein the chip collection attachment comprises:
 a mounting part having a tubular shape configured to be removably attached to the tip portion of the die holder, and 
 a bottomed receptacle part having a tubular shape configured to store chips guided through the first through-hole, the second through-hole, and the interior of the mounting part, and 
   wherein the outer diameter of the mounting part and the outer diameter of the receptacle part are substantially the same as or less than the outer diameter of the tip portion of the die holder.   
     
     
         2 . The nibbler according to  claim 1 , wherein when the outer diameter of the mounting part is defined as D1 (mm), the outer diameter of the receptacle part is defined as D2 (mm), and the outer diameter of the tip portion of the die holder is defined as D3 (mm), the following conditions are satisfied:
     D 1≤ D 3+6 mm and
       D 2≤ D 3+6 mm.
   
     
     
         3 . The nibbler according to  claim 1 , wherein when the outer diameter of the mounting part is defined as D1 (mm), the outer diameter of the receptacle part is defined as D2 (mm), and the outer diameter of the tip portion of the die holder is defined as D3 (mm), the following conditions are satisfied: 
       
         
           
             
               
                 D 
                 ⁢ 
                 1 
               
               ≤ 
               
                 
                   D 
                   ⁢ 
                   3 
                 
                 + 
                 
                   3 
                   ⁢ 
                      
                   mm 
                   ⁢ 
                       
                   and 
                 
               
             
           
         
         
           
             
               
                 D 
                 ⁢ 
                 2 
               
               ≤ 
               
                 
                   D 
                   ⁢ 
                   3 
                 
                 + 
                 
                   3 
                   ⁢ 
                      
                   
                     mm 
                     . 
                   
                 
               
             
           
         
       
     
     
         4 . The nibbler according to  claim 1 , wherein the outer diameter of the mounting part and the outer diameter of the receptacle part are less than or equal to the outer diameter of the tip portion of the die holder. 
     
     
         5 . The nibbler according to  claim 1 , wherein:
 the die holder has a first mounting hole that extends in the axial direction,   the die has a second mounting hole that is coaxial with the first mounting hole,   the die is configured to be attached to the die holder by a bolt that is inserted through the tip portion of the die holder into the first mounting hole and the second mounting hole,   the mounting part comprises:
 a peripheral part having a tubular shape, and 
 a base part having a third through-hole that communicates with the second through-hole, and a third mounting hole that is coaxial with the first mounting hole and the second mounting hole, and 
   the mounting part is attached to the tip portion of the die holder by inserting the bolt through the interior of the mounting part into the third mounting hole, the first mounting hole and the second mounting hole and threadably engaging at least the second mounting hole.   
     
     
         6 . The nibbler according to  claim 5 , wherein:
 the peripheral part of the mounting part has a cutout that passes radially therethrough and is adjacent to the base part and the bolt, and   a head of the bolt is partially located in the cutout.   
     
     
         7 . The nibbler according to  claim 6 , wherein:
 the mounting part and the receptacle part are formed as separate components,   the receptacle part is attachable to the mounting part by being interference fit in the mounting part, and   in a state in which the receptacle part has been attached to the mounting part, the receptacle part at least partially closes or covers the cutout.   
     
     
         8 . The nibbler according to  claim 1 , wherein at least a portion of the receptacle part is flexible. 
     
     
         9 . The nibbler according to  claim 8 , wherein the receptacle part includes a polymer tube. 
     
     
         10 . The nibbler according to  claim 1 , wherein the receptacle part has at least one transparent portion that is sufficiently transparent so that the amount of chips stored in the receptacle part is visible through the at least one transparent portion of the receptacle part. 
     
     
         11 . The nibbler according to  claim 1 , wherein:
 the mounting part and the receptacle part are formed as separate components,   the receptacle part is attached to the mounting part by being interference fit in the mounting part,   the receptacle part comprises:
 a receptacle part main body that is tubular and has a lower opening, and 
 a cap that closes the lower opening by being interference fit in the lower opening of the receptacle part main body, and 
   the interference fit engagement of the receptacle part with the cap requires less force to disengage than the interference fit engagement of the receptacle part with the mounting part.   
     
     
         12 . The nibbler according to  claim 5 , wherein:
 the die holder has a first mounting hole that extends in the axial direction,   the die has a second mounting hole that is coaxial with the first mounting hole,   the die is configured to be attached to the die holder by a bolt that is inserted through the tip portion of the die holder into the first mounting hole and the second mounting hole,   the mounting part comprises:
 a peripheral part having a tubular shape, and 
 a base part having a third through-hole that communicates with the second through-hole and a third mounting hole that is coaxial with the first mounting hole and the second mounting hole, and 
   the mounting part is attached to the tip portion of the die holder by inserting the bolt through the interior of the mounting part into the third mounting hole, the first mounting hole and the second mounting hole and threadably engaging at least the second mounting hole.   
     
     
         13 . The nibbler according to  claim 12 , wherein:
 the peripheral part of the mounting part has a cutout that passes radially therethrough and is adjacent to the base part and the bolt, and   a head of the bolt is partially located in the cutout.   
     
     
         14 . The nibbler according to  claim 13 , wherein:
 the mounting part and the receptacle part are formed as separate components,   the receptacle part is attachable to the mounting part by being interference fit in the mounting part, and   in a state in which the receptacle part has been attached to the mounting part, the receptacle part at least partially closes or covers the cutout.   
     
     
         15 . The nibbler according to  claim 14 , wherein at least a portion of the receptacle part is flexible. 
     
     
         16 . The nibbler according to  claim 15 , wherein the receptacle part includes a polymer tube. 
     
     
         17 . The nibbler according to  claim 16 , wherein the receptacle part has at least one transparent portion that is sufficiently transparent so that the amount of chips stored in the receptacle part is visible through the at least one transparent portion of the receptacle part. 
     
     
         18 . The nibbler according to  claim 17 , wherein:
 the receptacle part comprises:
 a receptacle part main body that is tubular and has a lower opening, and 
 a cap that closes the lower opening by being interference fit in the lower opening of the receptacle part main body, and 
   the interference fit engagement of the receptacle part with the cap requires less force to disengage than the interference fit engagement of the receptacle part with the mounting part.   
     
     
         19 . A nibbler, comprising:
 an elongated punch that extends in an axial direction and is capable of reciprocating in the axial direction,   a die having a first through-hole into which a tip of the punch is insertable,   a die holder having a recess in which the die is housed, a tip portion located farther from the punch than the recess in the axial direction, a second through-hole that communicates with the first through-hole, and a first mounting hole that extends in the axial direction, and   a chip collection attachment that is removably attached to the tip portion of the die holder,   wherein:   the die has a second mounting hole that is coaxial with the first mounting hole, the die is configured to be attached to the die holder by a bolt that is inserted through the tip portion of the die holder into the first mounting hole and the second mounting hole,   the chip collection attachment comprises:
 a mounting part having a tubular shape configured to be attached to the tip portion of the die holder, and 
 a bottomed tubular receptacle part that communicates with the interior of the mounting part and is configured to stores chips guided through the first through-hole, the second through-hole, and the mounting part, 
   the mounting part comprises:
 a peripheral part having a tubular shape, and 
 a base part having a third through-hole that communicates with the second through-hole, and a third mounting hole that is coaxial with the first mounting hole and the second mounting hole, and 
   the mounting part is attached to the tip portion of the die holder by inserting the bolt through the interior of the mounting part into the third mounting hole, the first mounting hole and the second mounting hole and threadably engaging at least the second mounting hole.