Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B24—GRINDING; POLISHING
  • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
  • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
  • B24B31/02—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels
  • B24B31/033—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels having several rotating or tumbling drums with parallel axes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B24—GRINDING; POLISHING
  • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
  • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
  • B24B31/02—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B24—GRINDING; POLISHING
  • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
  • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
  • B24B31/02—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels
  • B24B31/0212—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels the barrels being submitted to a composite rotary movement
  • B24B31/0218—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving rotary barrels the barrels being submitted to a composite rotary movement the barrels are moving around two parallel axes, e.g. gyratory, planetary movement
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B24—GRINDING; POLISHING
  • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
  • B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
  • B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B24—GRINDING; POLISHING
  • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
  • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
  • B24B49/12—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation involving optical means

Definitions

• the present invention relates to a centrifugal barrel polishing machine.
• Patent Literature 1 describes a centrifugal barrel polishing machine in which it is detected by a detection unit whether a fixing member for fixing a barrel tank to a barrel case is in a fixing form, and when the fixing member is not in the fixing form, a turret is not permitted to rotate.
• Patent Literature 1 JP 6666960 B
• the present invention has been made in view of the above problem, and an object of the present invention is to provide a centrifugal barrel polishing machine including a fixing member for fixing a barrel tank or a barrel lid, the centrifugal barrel polishing machine suppressing start of centrifugal barrel polishing in a state where the fixing member is not in the fixing form.
• the fixing member includes a to-be-measured portion whose position is displaced between the fixing form and the releasing form, when the fixing member changes from the fixing form to the releasing form, the to-be-measured portion is displaced from the measurement direction of the distance measurement unit to a direction intersecting the measurement direction, and when the barrel tank is located in the detection area, the controller determines whether a fixed-state distance indicating a horizontal distance to the to-be-measured portion is measured by the distance measurement unit, and when the fixed-state distance is not measured, the controller does not permit the turret to rotate.
• the controller determines whether the fixing member is in the fixing form, by using the distance measured by the distance measurement unit.
• the controller does not permit the turret to rotate. As a result, it is possible to suppress the centrifugal barrel polishing from being started in a state where the fixing member is not in the fixing form.
• the centrifugal barrel polishing machine it is possible to suppress the start of the centrifugal barrel polishing in a state where the fixing member is not in the fixing form.
• a centrifugal barrel polishing machine is a device capable of performing centrifugal barrel polishing on workpieces that are objects to be polished.
• a centrifugal barrel polishing machine 100 illustrated in Figs. 1 and 2 mainly includes a housing 90, a barrel mechanism 20, a controller 10 that controls driving of the barrel mechanism 20, an area detection sensor 14, and a distance measurement sensor 15.
• the controller 10 may be disposed outside the housing 90. Although description is omitted, the centrifugal barrel polishing machine 100 is connected to a power supply, and power from the power supply is supplied to the controller 10 and the barrel mechanism 20 via a power supply circuit (not illustrated).
• a height of the centrifugal barrel polishing machine is defined as a vertical direction D3, and a direction horizontal to the installation surface is defined as a horizontal direction (a direction including a first direction D1 and a second direction D2 to be described later).
• the horizontal direction is also a direction intersecting the vertical direction D3.
• the horizontal direction is not limited to being strictly parallel to the installation surface, and may be inclined by a predetermined angle with respect to the installation surface. Therefore, the horizontal direction is a concept including "being substantially horizontal" with respect to the installation surface.
• the barrel mechanism 20 mainly includes a revolution shaft 21, turrets 22, a motor 24, rotation shafts 23, barrel cases 40, barrel tanks 50, and fixing members 60.
• the revolution shaft 21 is attached inside the centrifugal barrel polishing machine 100 such that the shaft extends in the horizontal direction.
• the revolution shaft 21 is rotatably attached in the housing 90 in a state of being supported by bearings.
• the two turrets 22 are attached to the revolution shaft 21 so as to be rotatable integrally with the revolution shaft 21 in the direction in which the revolution shaft 21 extends.
• Each turret 22 is a member that radially expands centering on its central portion through which the revolution shaft 21 penetrates.
• the turret 22 is a disk-shaped member centered on its central portion where the revolution shaft 21 is located, and has an inner side surface 22A and an outer side surface 22B facing in a direction opposite to the inner side surface 22A.
• the two turrets 22 are rotatably held in the housing 90 by the revolution shaft 21 with the inner side surfaces 22A facing each other.
• the rotation shafts 23 are each attached so as to be relatively rotatable with respect to the turrets 22 in a state of being supported by bearing members fixed to the turrets 22.
• Each rotation shaft 23 is attached to a position eccentric from the rotation center of the turrets 22 by a predetermined distance (hereinafter, the position is also written as an eccentric position) with the extending direction of the shaft being oriented in the horizontal direction.
• the rotation shaft 23 is attached to each turret 22 at the eccentric position that is eccentric by a predetermined distance (that is, a radius of a revolution trajectory R) from the revolution center where the revolution shaft 21 is located.
• each barrel case 40 is each attached to be rotatable integrally with the rotation shaft 23.
• Each barrel case 40 has a space capable of housing therein the barrel tank 50.
• four of the barrel cases 40 are attached to the turrets 22 so as to be rotatable around four of the rotation shafts 23.
• the number of the barrel cases 40 attached to the turrets 22 is not limited to four, and may be less than four or more than four. Details of a shape of the barrel cases 40 will be described later.
• Each barrel tank 50 is a member having a mass accommodation space that is a space in which workpieces and polishing media are accommodated.
• the mass is a term integrally representing the workpieces and the polishing media.
• a size of the barrel tank 50 is smaller than a size of a tank housing space of the barrel case 40.
• Each fixing member 60 is a member that fixes the barrel tank 50 housed in the barrel case 40 to the barrel case 40. Detailed shapes of the barrel tank 50 and the fixing member 60 will be described later.
• a direction in which the revolution shaft 21 and the rotation shafts 23 extend is defined as the first direction D1
• a direction orthogonal to the first direction in the horizontal direction is defined as the second direction D2.
• the motor 24 is a drive source for rotating the turrets 22 and the barrel cases 40.
• a drive pulley 25 is attached to an output shaft of the motor 24.
• a driven pulley 27 is attached to the revolution shaft 21.
• the driven pulley 27 is coupled to the drive pulley 25 via a revolution belt 26.
• the rotation of the output shaft of the motor 24 can be transmitted to the driven pulley 27 via the revolution belt 26, thereby rotating the revolution shaft 21.
• a main timing pulley 28 is fixed to the housing 90 via a rotation stop member 31.
• the main timing pulley 28 is rotatably supported by the revolution shaft 21 via a bearing inserted in an inner peripheral hole of the main timing pulley 28.
• a rotation timing pulley 29 is attached to each rotation shaft 23.
• the rotation timing pulleys 29 are each coupled to the main timing pulley 28 via a timing belt 30.
• each rotation shaft 23 is coupled to the main timing pulley 28, which is a non-rotating body, via the timing belt 30, the rotation shaft 23 rotates in the direction opposite to the rotation direction of the turrets 22 as the turrets 22 rotate (revolve). As a result, the rotation shafts 23 and the barrel cases 40 can be rotated relative to the turrets 22.
• the main timing pulley 28 is coupled to the rotation shafts 23 via the rotation timing pulleys 29 and the timing belts 30, it is possible to suppress slipping caused by a rotation mechanism of each rotation shaft 23 and to suppress inclination of an angle of the barrel tank 50 located in a detection area 80 to be described later.
• the main timing pulley 28, the rotation timing pulleys 29, and the timing belts 30 are examples of a rotation mechanism. Instead of the timing belts 30, gears or chains may be used.
• the controller 10 includes an operation panel 11, a sequencer 12, and a drive circuit 13.
• the sequencer 12 is a programmable controller that stores a predetermined program in a memory.
• the sequencer 12 receives signals corresponding to operation conditions of the centrifugal barrel polishing machine 100 from the operation panel 11.
• the operation conditions that can be set by an operation on the operation panel 11 are, for example, rotation speeds of the turrets 22 and the barrel cases 40, a polishing time indicating a time for which the centrifugal barrel polishing is performed on the workpieces, and other conditions.
• An output from the sequencer 12 is input to the drive circuit 13.
• the drive circuit 13 outputs a drive signal for controlling the rotation speed of the motor 24 and the polishing time in accordance with a signal corresponding to the operation conditions input from the sequencer 12.
• the area detection sensor 14 is a sensor that detects whether the barrel tank 50 is located in the detection area 80 that is a predetermined area in the housing 90.
• the detection area 80 is an area located on the revolution trajectory R of the barrel cases 40, and in the present embodiment, as illustrated in Fig. 2 , the detection area 80 is an area including the highest position in the vertical direction D3 on the revolution trajectory R.
• a detection dog 16 is attached to the peripheral edge of the turret 22 every 90 degrees in accordance with the positions of the barrel cases 40.
• the area detection sensor 14 is attached so as to be able to detect the detection dog 16 located at the center in the vertical direction D3. As illustrated in Fig.
• the area detection sensor 14 detects the detection dog 16, it means that the barrel tank 50 (barrel case 40) corresponding to a position set back counterclockwise by 90 degrees from such a detection dog 16 is located in the detection area 80.
• the area detection sensor 14 is connected to the controller 10, and outputs a detection signal to the controller 10 when detecting that the barrel case 40 is located in the detection area 80.
• the distance measurement sensor 15 is a sensor that monitors whether the fixing member 60 is in a fixing form.
• the distance measurement sensor 15 is a sensor that measures a distance to an object by emitting measurement light along a measurement direction and receiving the measurement light reflected from the object located in the measurement direction.
• the distance measurement sensor 15 is connected to the controller 10, and outputs to the controller 10 distance information corresponding to the measurement light reflected from the object.
• the distance measurement sensor 15 is an example of a distance measurement unit.
• the distance measurement sensor 15 is attached to an outside, with respect to the turret 22, on the outer side surface 22B side in the first direction D1, which is the extending direction of the revolution shaft 21.
• the distance measurement sensor 15 is attached in the housing 90 in the following state.
• a detection direction is directed to the detection area 80, and a direction in which the measurement light is emitted is directed substantially parallel to the first direction D1.
• Each barrel case 40 is a container having its upper portion opened and having a tank housing space capable of housing therein the barrel tank 50.
• the barrel case 40 includes a bottom wall, a pair of opposing walls extending from both edges of the bottom wall in the first direction D1, and a pair of side walls extending from both ends of the bottom wall in the second direction D2.
• a space surrounded by the pair of opposing walls and the pair of side walls is the tank housing space.
• Each rotation shaft 23 is fixed to the opposing walls of the barrel case 40, and the barrel case 40 can rotate integrally with the rotation shaft 23.
• a pair of side plates 45 are attached to both ends, of an upper portion of the barrel case 40, in the first direction D1.
• Each side plate 45 is a plate-shaped member having a polygonal flat surface.
• the side plate 45 has a cutout portion 46 in which one of corner portions of the flat surface is cut out, and has a positioning hole 47 which penetrates the flat surface and to which a fixing member (clamp lever 61) to be described later is mounted.
• the side plates 45 are attached to the opposing walls of respective ones of barrel cases 40 with the flat surfaces facing in the first direction D1.
• Each barrel tank 50 includes a barrel body 51 and a barrel lid 52.
• the barrel body 51 is a container having an opening in an upper surface and having a mass accommodation space capable of accommodating therein a mass (workpieces, polishing media, and the like).
• the barrel lid 52 is a member that closes the opening of the barrel body 51.
• Each fixing member 60 is a member that changes between the fixing form for fixing the barrel tank 50 to the barrel case 40 and a releasing form for releasing the fixation of the barrel tank 50 to the barrel case 40. As illustrated in Figs. 3 and 4 , the fixing member 60 includes a clamp lever 61 and a lever fixing portion 70.
• the clamp lever 61 is a member rotatably attached to the side plates 45 of the barrel case 40.
• the clamp lever 61 mainly includes a main body shaft portion 62, a lever 63 protruding outward from the main body shaft portion 62, and a measurement dog 64. Both ends of the main body shaft portion 62 have insertion portions 65 and 66 having a diameter smaller than that of the main body shaft portion 62.
• the measurement dog 64 is a bracket-shaped portion protruding outward from the main body shaft portion 62, and has a to-be-measured surface 64A facing in the extending direction of the shaft.
• Each lever fixing portion 70 is a member that fixes the clamp lever 61 in a state where rotation of the clamp lever 61 with respect to the barrel case 40 is restricted.
• the lever fixing portion 70 includes: a fixing pin 71; three guide portions 72, 73, and 74 that guide the fixing pin 71; and a spring 75 that biases the fixing pin 71 to a biased position.
• the three guide portions 72, 73, and 74 are fixed on the barrel lid 52 in a state of being aligned in the same direction.
• the two guide portions 72 and 73 have a through-hole that guides sliding of the fixing pin 71.
• the spring 75 is penetrated by the fixing pin 71 and is located in a state of being restricted by the stopper member 77.
• the spring 75 applies an elastic pressing force for bringing a tip, of the fixing pin 71, on the opposite side to a knob 76 into contact with the guide portion 74.
• the barrel tank 50 When the barrel tank 50 is fixed to the barrel case 40 by the fixing member 60, the barrel tank 50 is first housed in the tank housing space of the barrel case 40 in a state where the opening of the barrel body 51 is covered by the barrel lid 52. Next, as illustrated in Fig. 4 , one insertion portion 65 of the clamp lever 61 is inserted into the positioning hole 47 of the side plate 45, and then the other insertion portion 66 is inserted into the other positioning hole 47 of the other side plate 45. The knob 76 is pulled with respect to the fixing pin 71 so that the tip of the fixing pin 71 slides closer to the guide portion 73 side than to the guide portion 74. In this state, the lever 63 of the clamp lever 61 is positioned between the guide portions 73 and 74.
• step 11 the controller 10 rotates the turrets 22 at a low speed by an operation of a start button by an operator.
• the rotation speed of the motor 24 set in S11 is a speed determined as a speed for determining the fixing form of the fixing member 60, and is a speed lower than a rotation speed set as an operation condition at the time of polishing.
• the step is also written as "S".
• step S13 the controller 10 determines the distance information output from the distance measurement sensor 15.
• Fig. 6 illustrates a relationship between the fixing member 60 and the distance measurement sensor 15 when the fixing member 60 is in the fixing form in the barrel tank 50 located in the detection area 80.
• the angle of the barrel tank 50 is not displaced in the detection area 80.
• the distance measurement sensor 15 measures a fixed-state distance that is a horizontal distance to the to-be-measured surface 64A.
• the "fixed-state distance” is a distance assumed when the barrel tank 50 is located in the detection area 80 and the fixing member 60 is in the fixing form.
• the fixed-state distance is a value having an error range of several [mm] on each of the positive side and the negative side with respect to a reference value.
• a position at which the trajectory of the measurement light from the distance measurement sensor 15 intersects the to-be-measured surface 64A is defined as a first position P.
• a predetermined range AR that orthogonally extends, at the first position P, on the trajectory of the measurement light from the distance measurement sensor 15.
• the detection area 80 other than the to-be-measured surface 64A, there is no object capable of reflecting the measurement light on the predetermined range AR orthogonally extending at the first position P.
• the controller 10 determines that the fixing member 60 is in the fixing form. On the other hand, when the distance information obtained by the distance measurement sensor 15 does not fall within the error range with respect to the reference value for the fixed-state distance, the controller 10 determines that the fixing member 60 is not in the fixing form.
• the controller 10 stops the rotation of the turrets 22 when acquiring the distance information by the distance measurement sensor 15. In addition to this, when a low rotation speed of the turrets 22 set in S11 is sufficiently low, the controller 10 may continue the rotation of the turrets 22.
• the controller 10 starts counting by a timer (not illustrated). For the counting by the timer, a necessary time required for one rotation of the turrets 22 is set in consideration of the rotation speed of the turrets 22.
• the controller 10 determines whether the fixing member 60 has measured the fixed-state distance four times (the same number as the number of barrel cases 40). If the number of times the fixed-state distance has been measured is less than four in S14 (S14: NO), the controller 10 proceeds to S15 and determines whether the timer has completed counting. When the controller 10 determines that the timer counting has not completed (that is, the turrets 22 do not make one rotation) (S15: NO), the process returns to S12, and the area detection sensor 14 determines whether the next barrel tank 50 is located in the detection area 80. Then, when the barrel tank 50 is newly located in the detection area 80 (S12: YES), the controller 10 performs processing of S13 and S14.
• the controller 10 determines, based on the fact that the detection of the area detection sensor 14 and the determination of the distance information are repeated, that the fixed-state distance has been measured four times (S14: YES), the controller 10 proceeds to S16.
• the controller 10 starts the rotation of the turrets 22 under an operation condition (that is, high-speed rotation) without stopping the turrets 22.
• the controller 10 proceeds to a barrel polishing step.
• the controller 10 counts the polishing time in S17.
• the controller 10 stops in S18 the high-speed rotation of the turrets 22, and ends the barrel polishing step.
• Fig. 7 illustrates a relationship between the fixing member 60 and the distance measurement sensor 15 when the fixing member 60 is not in the fixing form in the barrel tank 50 located in the detection area 80.
• the lever 63 of the clamp lever 61 is pushed up from the barrel tank 50.
• the to-be-measured surface 64A of the measurement dog 64 of the clamp lever 61 is located on an upper side in the vertical direction D3 with respect to the side plate 45. That is, since the fixing member 60 is changed from the fixing form to the releasing form, the to-be-measured surface 64A is displaced in the vertical direction D3 intersecting the measurement direction of the distance measurement sensor 15.
• the to-be-measured surface 64A of the measurement dog 64 is not located on the trajectory of the measurement light from the distance measurement sensor 15, and the distance measurement sensor 15 does not measure the fixed-state distance.
• the fixing member 60 when the fixing member 60 is not in the fixing form, there is no object located on the predetermined range AR orthogonally extending at the first position P on the trajectory of the measurement light.
• the distance to a portion present at a position different from the first position P on the trajectory of the measurement light from the distance measurement sensor 15 (for example, the housing 90 located at a position farther from the distance measurement sensor 15 than the first position P) is measured.
• Fig. 8 illustrates, as a comparative example, a case where, based on the presence or absence of the measurement dog 64, it is detected whether the fixing member 60 is in the fixing form in the barrel tank 50 located in the detection area 80. That is, in the examples illustrated in Fig. 8 , unlike the present embodiment, a distance is not measured with respect to the fixing member 60. Note that, in Fig. 8 , the barrel tank 50 is inclined by more than the assumed angle in the detection area 80 with the rotation shaft 23 as a center.
• the clamp lever 61 of fixing member 60 is left unfixed to the side plate 45.
• the side plate 45 is located on the trajectory of the detection light of the sensor. In other words, the side plate 45 is located on the trajectory of the detection light, but is located at a position different from the first position P on the trajectory. Therefore, in this comparative example, since the sensor detects the side plate 45, it is erroneously determined that the fixing member 60 is in the fixing form.
• the distance measurement sensor 15 measures the distance with respect to the fixing member 60, in both cases of Figs. 8(a) and 8(b), the lever 63 and the side plate 45 are on the trajectory of the measurement light but are not located at the first position P, and the distance measurement sensor 15 measures a distance different from the fixed-state distance.
• the controller 10 can determine that the fixing member 60 is not in the fixing form.
• the distance measurement sensor 15 does not measure the fixed-state distance (S14: NO), and the controller 10 does not permit the rotation of the turrets 22. In such a case, the controller 10 does not rotate the turrets 22, so that the centrifugal barrel polishing machine is caused to act on a safer side.
• the controller 10 determines whether the fixing member 60 is in the fixing form, by using the distance measured by the distance measurement sensor 15.
• the rotation of the turrets 22 is not permitted.
• the turrets 22 are not permitted to rotate in the following case.
• the distance measurement sensor 15 is attached, in the first direction D1, on an outside on the outer side surface 22B side that is opposite to the inner side surface 22A of the turret 22 to which the barrel case is attached.
• main timing pulley 28 is coupled to the rotation shafts 23 via the rotation timing pulleys 29 and the timing belts 30, it is possible to suppress slipping caused by the rotation mechanism of each rotation shaft 23 and to thereby suppress inclination of the angle of the barrel tank 50 located in the detection area 80. As a result, it is possible to suppress the distance measurement sensor 15 from being unable to measure the fixed-state distance and to cause the centrifugal barrel polishing machine 100 to stably operate.
• Fig. 9 is a diagram illustrating a configuration of a centrifugal barrel polishing machine 100 according to the present embodiment.
• Fig. 10 is an enlarged view of the inside when Fig. 9 is viewed in a direction of arrow B.
• barrel tanks 50 are each fixed by a fixing member 60 in a state of being accommodated in a barrel case 40.
• the fixing member 60 is mounted on the barrel case 40 via side plates 45.
• each barrel tank 50 has a different shape from that in the first embodiment, and a shape of the fixing member 60 is also different in accordance with the shape of the barrel tank 50.
• an opening into which a mass can be inserted is formed on one side in a longitudinal direction of a barrel body 51 (in Fig. 9 , a first direction D1).
• a barrel lid 52 is attached to the barrel body 51 so as to cover the opening of the barrel body 51. Therefore, the barrel tank 50 is accommodated in a tank housing space of the barrel case 40 in a state where the barrel lid 52 is located on one side in the first direction D1 (a right side in Fig. 9 ).
• Fig. 11 is a diagram for describing the fixing member 60 according to the present embodiment.
• the fixing member 60 includes a body plate 160, a screw portion 161, and a pressure receiving portion 164.
• the body plate 160 is a plate-shaped member, and has a dimension in the longitudinal direction larger than a dimension between the side plates 45 of the barrel case 40.
• a female thread is formed, along a thickness direction, in a flat surface in an upward direction of the body plate 160.
• the screw portion 161 is a member to be screwed with the female thread of the body plate 160, and has, at a tip part, an engagement portion that can engage with a wrench.
• the pressure receiving portion 164 is fixed to the barrel body 51 of the barrel tank 50.
• the barrel lid 52 is first fixed in a state of covering the opening of the barrel body 51. Then, the barrel tank 50 is housed in the tank housing space of the barrel case 40. Next, as illustrated in Fig. 11 , one insertion portion 162 of the body plate 160 is inserted into one positioning hole 47 of the side plate 45, and then the other insertion portion 163 is inserted into a positioning hole 47 of the other side plate 45.
• a wrench (not illustrated)
• an end portion of the screw portion 161 facing the pressure receiving portion 164 side is brought into contact with the pressure receiving portion 164.
• one insertion portion 163 of the body plate 160 is used as a to-be-measured portion. In a state illustrated in Fig. 11 , the insertion portion 163 is not located on an optical axis of measurement light from a distance measurement sensor 15.
• the insertion portion 163 is located on a trajectory of the measurement light from the distance measurement sensor 15.
• a position at which the insertion portion 163 of the body plate 160 is intersected on the trajectory of the measurement light from the distance measurement sensor 15 is defined as a first position P.
• the detection area 80 other than the insertion portion 163 of the body plate 160, there is no object capable of reflecting the measurement light on a predetermined range AR orthogonally extending at the first position P.
• a configuration different from that of the first embodiment will be mainly described.
• the same portions as in the first embodiment are denoted by the same reference signs, and the description thereof will not be repeated.
• Fig. 13 is a diagram for describing a barrel mechanism 20 according to the present embodiment.
• fixing members 60 each include a clamp lever 61 and a lever fixing portion 70. Configurations of the clamp lever 61 and the lever fixing portion 70 have already been described with reference to Figs. 3 and 4 .
• the barrel mechanism 20 does not include barrel cases, and the barrel tanks 50 are each rotatably fixed integrally with a rotation shaft 23.
• a pair of side plates 45 are directly attached to a barrel body 51 of the barrel tank 50.
• the barrel lid 52 is fixed to the barrel body 51 by attaching the fixing member 60 to the side plates 45 attached to the barrel body 51. Note that a method of fixing the barrel lid 52 to the barrel body 51 by the fixing member 60 has already been described with reference to Fig. 4 .
• the centrifugal barrel polishing machine 100 rotates the revolution shaft 21 and the rotation shafts 23 by one motor 24.
• the centrifugal barrel polishing machine 100 may separately include a motor for rotating the revolution shaft 21 and a motor for rotating the rotation shafts 23.
• each barrel case 40 is angled to be horizontal (that is, parallel to the first direction D1 and the second direction D2), but the bottom surface of each barrel case 40 may be inclined by a predetermined angle.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
• Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=93059044

Family Applications (1)

Country Status (5)

Citations (1)

Family Cites Families (5)

• 2023
  • 2023-04-10 WO PCT/JP2023/014527 patent/WO2024214135A1/ja not_active Ceased
  • 2023-04-10 CN CN202380096726.7A patent/CN120981320A/zh active Pending
  • 2023-04-10 JP JP2025513507A patent/JP7849938B2/ja active Active
  • 2023-04-10 EP EP23932917.0A patent/EP4696456A1/en active Pending
  • 2023-04-10 KR KR1020257031301A patent/KR20250150129A/ko active Pending

Patent Citations (1)

Also Published As

Similar Documents

Legal Events