JP2013123765A - Composite machining machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a composite machining machine capable of machining slide faces having excellent lubricity in a short time with high accuracy.SOLUTION: The composite machining machine includes: a work mounting unit 13 rotatably supporting a camshaft 100; a grinding unit 11 grinding the slide faces 121a-125a by a finishing grinding wheel 26 when the camshaft 100 rotates by the work mounting unit 13; and a laser machining unit 12 irradiating laser light L to the slide faces 121a-125a when grinding the slide faces 121a-125a by the grinding unit 11 to laser-machine dimples D each functioning as an oil reservoir.

Description

  The present invention relates to a multi-task machine capable of simultaneously performing grinding and laser processing on a sliding surface forming an outer peripheral surface of a sliding member.

  Many sliding members (rotating bodies) such as camshafts and crankshafts are incorporated in an engine mounted on a vehicle. And by always supplying lubricating oil between the sliding surface of the sliding member and the bearing surface that slidably supports the sliding surface, the friction generated between them is reduced. I have to.

  However, in a low engine speed range, the oil pressure between the sliding surface and the bearing surface decreases, and it is difficult to ensure the lubricating film. Thereby, there is a possibility that the friction generated between them cannot be sufficiently reduced.

  In view of this, a sliding member is provided in which a concave portion functioning as an oil reservoir is formed on the sliding surface for the purpose of reducing the friction in the so-called boundary lubrication state as described above. And as a processing method which processes a hollow part into a sliding surface, the laser processing method using a laser beam is employ | adopted a lot.

  Conventionally, various composite processing machines capable of performing grinding and laser processing on the sliding surface of the sliding member have been provided. Such composite processing machines are disclosed in, for example, Patent Document 1. Is disclosed.

JP 2007-313515 A

  However, in the conventional multi-tasking machine, since only one of the grindstone and the laser head can be attached to one main shaft, the grinding process and the laser processing have to be performed separately. Thereby, there existed a possibility of causing the increase in processing time.

  Further, in the conventional combined processing machine, when irradiating the laser beam, the coolant is supplied toward the sliding surface to remove the thermal influence on the processed part. However, at the time of laser processing, it is necessary to condense the laser light by the condenser lens. Therefore, if the flow of the supplied coolant is disturbed, the condensing of the laser light becomes insufficient. That is, if the coolant is supplied in a turbulent state, there is a possibility that the laser beam cannot be stably irradiated.

  Accordingly, the present invention solves the above-described problems, and an object of the present invention is to provide a multi-task machine capable of processing a sliding surface with excellent lubricity in a short time and with high accuracy. .

The multi-tasking machine according to the first invention for solving the above-mentioned problems is as follows.
A workpiece mounting unit that rotatably supports the workpiece;
A grinding unit that grinds at least one of the sliding surfaces of a plurality of sliding surfaces forming an outer peripheral surface of the workpiece with a grindstone during rotation of the workpiece by the workpiece mounting unit;
A laser processing unit that irradiates at least one of the sliding surfaces with a laser beam during the grinding of the sliding surface by the grinding processing unit, and laser-processes a recess in the sliding surface. To do.

The multi-tasking machine according to the second invention for solving the above-mentioned problems is
Grinding by the grinding unit and laser processing by the laser processing unit are simultaneously performed on at least one sliding surface.

A multi-tasking machine according to a third invention for solving the above-described problems is as follows.
A cooling water supply means is provided for cooling the sliding surface by supplying cooling water in a laminar flow to the heating region irradiated with the laser beam on the sliding surface. To do.

A multi-tasking machine according to a fourth invention for solving the above-described problems is as follows.
The cooling water supply means supplies the cooling water in a state where the water pressure becomes atmospheric pressure.

A multi-tasking machine according to a fifth invention for solving the above-mentioned problems is as follows.
The cooling water supply means is
An inner supply pipe through which cooling water is supplied,
An overflow hole formed at an upper portion of the inner supply pipe and for allowing the cooling water supplied into the inner supply pipe to flow out of the inner supply pipe;
The inner supply pipe is housed therein, and the outer supply pipe that maintains the water pressure of the filled cooling water at atmospheric pressure by filling the cooling water flowing out of the overflow hole,
A laminar flow slit is formed in a lower portion of the outer supply pipe and supplies cooling water filled in the outer supply pipe toward the heating region in a laminar flow state.

The multi-tasking machine according to the sixth invention for solving the above-described problems is
The rotation direction of the workpiece by the mounting unit and the cooling water supply direction by the cooling water supply means are the same direction.

A multi-tasking machine according to a seventh invention for solving the above-described problems is as follows.
The grinding unit and the laser processing unit are arranged to face each other with the workpiece interposed therebetween.

  Therefore, according to the multi-tasking machine according to the present invention, grinding processing by a grindstone and laser processing for processing a recess are performed on any one of the plurality of sliding surfaces of the workpiece. Are simultaneously performed, it is possible to process a sliding surface with excellent lubricity in a short time and with high accuracy.

1 is a plan view of a multi-tasking machine according to an embodiment of the present invention. It is AA arrow sectional drawing of FIG. FIG. 3 is an enlarged view of a main part of FIG. 2. It is the figure which showed the piping structure of an inner side supply pipe | tube and an outer side supply pipe | tube. It is a schematic block diagram of a cam shaft. It is an enlarged view of the sliding surface of a cam shaft.

  Hereinafter, a multi-tasking machine according to the present invention will be described in detail with reference to the drawings.

  First, the multi-task machine 1 shown in FIGS. 1 and 2 is formed on the sliding surfaces 121a to 125a of a camshaft (workpiece, rotating body, sliding member) 100 employed in a vehicle engine (not shown). On the other hand, it is a machine that can perform grinding and laser processing simultaneously.

  Here, as shown in FIGS. 5 and 6, the camshaft 100 includes a shaft portion 101, four sets of cams 111 to 114 including a pair of left and right, and sliding portions 121 to 125. The cams 111 to 114 and the sliding portions 121 to 125 are arranged at a predetermined interval in the axial direction of the shaft portion 101. And the sliding part 121 is arrange | positioned at the axial direction outer side of the cam 111, and the sliding parts 122-125 are arrange | positioned between the cams 111-114 of each group.

  Moreover, the sliding parts 121-125 have the sliding surfaces 121a-125a which make the outer peripheral surface. These sliding surfaces 121a to 125a are rotatably supported by bearing surfaces of bearings provided in the vehicle engine when the camshaft 100 is attached to the vehicle engine.

  Next, the configuration of the multi-task machine 1 will be described in detail with reference to FIGS. 1 to 4 and FIG.

  As shown in FIGS. 1 and 2, the multi-tasking machine 1 includes a grinding unit 11, a laser processing unit 12, a workpiece mounting unit 13, and a bed 14 provided with these units 11, 12, and 13 on the upper portion thereof. Has been.

  The workpiece mounting unit 13 allows the above-described cam shaft 100 to be detachable in a state where the axis of the shaft portion 101 is arranged in the X-axis direction. Further, the grinding unit 11 and the laser processing unit 12 simultaneously perform respective processing on the camshaft 100 mounted on the workpiece mounting unit 13 from the Z-axis direction orthogonal to the X-axis direction. . That is, the grinding unit 11 and the laser processing unit 12 are provided to face each other with the workpiece mounting unit 13 in between in the Z-axis direction.

  First, an X-axis grinding wheel base 21 is provided below the grinding unit 11, and the X-axis grinding wheel base 21 is supported on the upper surface of the bed 14 so as to be movable in the X-axis direction. Further, a Z-axis grinding wheel base 22 is supported on the upper surface of the X-axis grinding wheel base 21 so as to be movable in the Z-axis direction. On the upper surface of the Z-axis grinding wheel base 22, a rotary table 23 is rotated vertically. It is supported so as to be rotatable around the axis P.

  Furthermore, a first grindstone spindle head 24 and a second grindstone spindle head 25 are supported on the upper surface of the rotary table 23 so as to be movable in the horizontal direction. The first grindstone spindle head 24 and the second grindstone spindle head 25 are arranged symmetrically about a horizontal line passing through the table rotation axis P of the rotary table 23 and can be independently moved in the horizontal direction. ing. A finishing grindstone 26 and a superfinishing grindstone 27 having different grinding capabilities are rotatably supported by the first grindstone spindle head 24 and the second grindstone spindle head 25, respectively.

  Note that the finishing grindstone 26 and the superfinishing grindstone 27 differ in the type of grindstone depending on, for example, the type and grain size of the abrasive grains, the type and degree of bonding of the binder, the porosity, and the like. The super-finishing grindstone 27 can be ground more finely than the finishing grindstone 26 and has a grinding ability higher than that of the finishing grindstone 26.

  Therefore, by driving the X-axis grinding wheel base 21 and the Z-axis grinding wheel base 22, the finishing grinding wheel 26 and the super-finishing grinding wheel 27 are moved in the X-axis direction (the axial direction of the camshaft 100) and the Z-axis direction (the camshaft 100). In the radial direction). Also, by rotating the rotary table 23 around the table rotation axis P, the finishing grindstone 26 and the superfinishing grindstone 27 can be ground on the sliding surfaces 121a to 125a of the camshaft 100 mounted on the workpiece mounting unit 13. It is possible to rotate between a machining position and a retreat position retracted from the machining position. Further, by driving the first grindstone spindle head 24 and the second grindstone spindle head 25, the finishing grindstone 26 and the superfinishing grindstone 27 can be rotated, and the mounted sliding surfaces 121a to 125a can be rotated. Thus, they can be approached and separated in the X-axis direction.

  A support base 15 extending in the X-axis direction is provided on the upper surface of the bed 14, and a laser processing unit 12 is provided on the inclined surface 15 a of the support base 15. The inclined surface 15a is formed so as to be gradually inclined upward toward the workpiece mounting unit 13 in the Z-axis direction.

  An X-axis moving body 31 is provided below the laser processing unit 12, and the X-axis moving body 31 is supported on the inclined surface 15 a of the support base 15 so as to be movable in the X-axis direction. Further, a Z-axis moving body 32 is supported on the upper surface of the X-axis moving body 31 so as to be movable in the Z-axis direction. A laser oscillator 33 is provided above the Z-axis moving body 32, and a condenser lens 35 is provided via an attachment member 34. At this time, the laser oscillator 33 and the condenser lens 35 are provided so as to face each other in the Z-axis direction, and the laser light L output from the laser oscillator 33 passes through the condenser lens 35. Focused.

  Accordingly, by driving the X-axis moving body 31 and the Z-axis moving body 32, the laser oscillator 33 and the condenser lens 35 are moved in the X-axis direction (the axial direction of the camshaft 100) and the Z-axis direction (the radial direction of the camshaft 100). ).

  Here, the driving of the Z-axis moving body 32 is not only used for movement and positioning in the Z-axis direction in the laser oscillator 33 but also for adjusting the condensing position of the laser light L by the condensing lens 35. Also used. That is, by driving the Z-axis moving body 32, the condensing position of the laser light L by the condensing lens 35 can be moved in the Z-axis direction. The laser oscillator 33 can adjust the energy density of the laser beam L to be output, the irradiation time (output time), and the number of times of irradiation. That is, by adjusting the energy density, the irradiation time, the number of irradiation times, and the amount of movement of the condenser lens 35 in the Z-axis direction, the laser light L is applied to the sliding surfaces 121a to 125a. The diameter and depth of the dimples (recessed portion, oil groove) D processed when irradiated can be adjusted (see FIG. 6).

  Furthermore, a work mounting unit 13 is provided on a horizontal surface 15 b that is an upper surface of the support base 15. A work spindle 41 and a work support 42 are respectively provided on both sides of the work mounting unit 13 in the X-axis direction. The work spindle 41 and the work support 42 are moved toward and away from each other on the horizontal plane 15b. As described above, it is supported so as to be movable in the X-axis direction.

  A work spindle 41a is rotatably supported inside the work spindle 41, and the work spindle 41a can be driven to rotate at a predetermined rotational speed and can hold one end of the camshaft 100. An encoder 43 is connected to the work spindle 41, and this encoder 43 can detect the rotation angle of the work spindle 41a.

  On the other hand, a center member 42a is rotatably supported inside the work support base 42. The center member 42a is disposed coaxially with the work spindle 41a and can hold the other end of the camshaft 100.

  As shown in FIGS. 1 to 3, a container 44 is provided between the work spindle 41 and the work support 42. The container 44 is formed so that an upper portion thereof is opened, and is disposed so as to be positioned below the camshaft 100 mounted between the workpiece main shaft 41a and the center member 42a.

  Thereby, although mentioned later for details, in the container 44, the grinding fluid C used at the time of a grinding process and the cooling water W used at the time of a laser processing flow down. Therefore, a drainage hole 44a for draining the grinding liquid C and the cooling water W from the inside of the container 44 is opened at the bottom of the container 44, and the drainage channel 14 is formed in the bed 14 below the drainage hole 44a. Is formed.

  Further, the container 44 has an inclined wall 44b on the laser processing unit 12 side. The inclined wall 44b is formed so as to be gradually inclined downward toward the axis of the mounted camshaft 100 in the Z-axis direction, and its lower end is positioned below the camshaft 100. Is arranged.

  Further, the laser beam transmitting window 45 is fitted into the inclined wall 44b at a predetermined interval so as to face the mounted sliding portions 121 to 125. That is, the laser beam L output from the laser oscillator 33 is condensed by the condenser lens 35 and then irradiated to the sliding surfaces 121a to 125a of the mounted camshaft 100. Then, the laser beam passes through the laser beam transmission window 45.

  Accordingly, the camshaft 100 can be attached to and detached from the container 44 by moving the workpiece spindle 41a of the workpiece spindle table 41 and the center member 42a of the workpiece support table 42 closer to and away from each other in the X-axis direction. Further, the camshaft 100 can be rotated around its axis by rotating the work main shaft 41a while the camshaft 100 is sandwiched between the work main shaft 41a and the center member 42a. At this time, as shown in FIGS. 3 and 6, after the laser beam L output from the laser oscillator 33 is condensed by the condenser lens 35, the sliding surfaces 121 a to 125 a are passed through the laser beam transmission window 45. The fine dimples D that function as oil reservoirs can be processed on the sliding surfaces 121a to 125a.

  Here, as shown in FIG. 2, a grinding liquid tank 51 for storing the grinding liquid C and a cooling water tank 52 for storing the cooling water W are provided on the side of the bed 14. .

  The grinding fluid tank 51 is connected to the drainage passage 14 a of the bed 14 described above, and is connected to a grinding fluid supply pipe 53. An injection nozzle 53 a is formed at the tip of the grinding fluid supply pipe 53, and the injection nozzle 53 a can move according to the positions of the sliding surfaces 121 a to 125 a of the mounted camshaft 100. ing. Further, the grinding liquid supply pipe 53 is provided with a pump 54.

  In addition, a cooling water supply pipe 55 is connected to the cooling water tank 52, and a pump 56 is provided in the cooling water supply pipe 55. As shown in FIGS. 2 to 4, the downstream end of the cooling water supply pipe 55 is branched into two branch pipes 55a, and an inner supply is provided between the downstream ends of the branch pipes 55a. The pipe 71 is connected so as to be parallel to the mounted camshaft 100. Furthermore, a plurality of overflow holes 71 a are formed in the upper portion of the inner supply pipe 71 along the axial direction thereof.

  On the other hand, as shown in FIGS. 2 to 4, an outer supply pipe 72 is provided on the upper edge of the inclined wall 44b of the container 44 so as to be parallel to the mounted camshaft 100. An inner supply pipe 71 is accommodated in the supply pipe 72. Furthermore, a laminar slit 72a is formed at the bottom of the outer supply pipe 72 along the inner surface of the inclined wall 44b. The length of the laminarization slit 72a in the X-axis direction is set to be longer than the length between the sliding surfaces 121a and 125a of the camshaft 100.

  Further, as shown in FIG. 2, the grinding liquid tank 51 and the cooling water tank 52 are connected by a connecting pipe 57, and the connecting pipe 57 is provided with a pump 58 and a filter 59 in this order from the upstream side. It has been. The filter 59 and the grinding fluid tank 51 are connected by a return pipe 60.

  The cooling water tank 52, the cooling water supply pipe 55, the branch pipe 55a, the pump 56, the inner supply pipe 71, the overflow hole 71a, the outer supply pipe 72, the laminarization slit 72a, etc. constitute the cooling water supply means. Is.

  Therefore, by driving the pump 54, the grinding fluid C stored in the grinding fluid tank 51 can be pumped up through the grinding fluid supply pipe 53 and ejected from the ejection nozzle 53a. Accordingly, since the grinding liquid C can be supplied between the finishing grindstone 26 and the superfinishing grindstone 27 and the sliding surfaces 121a to 125a of the camshaft 100 at the time of grinding, lubrication between them and Cooling can be performed.

  Further, by driving the pump 56, the cooling water W stored in the cooling water tank 52 is pumped up through the cooling water supply pipe 55, and then supplied into the inner supply pipe 71 through the branch pipe 55a. Can do. Thereby, the cooling water W supplied into the inner supply pipe 71 flows out of the overflow hole 71a, fills the outer supply pipe 72, and then flows out of the laminarization slit 72a.

  At this time, the cooling water W is formed in a curtain shape by passing through the laminarization slit 72a, and then heated by the laser light L on the sliding surfaces 121a to 125a of the mounted camshaft 100. Supplied towards Further, the outflow direction (supply direction) of the cooling water W flowing out from the laminarization slit 72 a is the same as the rotation direction of the camshaft 100. Thereby, cooling of the sliding surfaces 121a-125a at the time of laser processing can be performed efficiently.

  As described above, since the length of the laminarization slit 72a in the X-axis direction is set to be longer than the length between the sliding surfaces 121a and 125a of the camshaft 100, the laminarization is performed. The cooling water W flowing out from the slit 72a is supplied not only to the sliding surfaces 121a to 125a irradiated with the laser light L but also to the sliding surfaces 121a to 125a not irradiated with the laser light L.

  Further, by driving the pump 58, the grinding fluid C stored in the grinding fluid tank 51 can be pumped up through the connection pipe 57 and supplied to the filter 59 side. As a result, the grinding liquid C passes through the filter 59, so that foreign matters such as grinding dust mixed in the liquid are removed. Then, a part of the grinding liquid C from which the foreign matter has been removed in this way is supplied as cooling water W to the cooling water tank 52, while the remaining grinding liquid C is ground via the return pipe 60. Returned to the liquid tank 51.

  The used grinding fluid C and cooling water W flow down toward the bottom of the container 44 and are mixed, and then drained onto the drainage channel 14a of the bed 14 through the drainage hole 44a. Then, the mixed liquid of the grinding liquid C and the cooling water W is returned from the drainage channel 14a to the grinding liquid tank 51 and reused.

  Next, the operation of the multi-task machine 1 will be described in detail with reference to FIGS.

  First, as shown in FIG. 1, after the camshaft 100 is mounted between the work spindle base 41 and the work support base 42, the camshaft 100 is rotated by rotationally driving the work spindle 41a.

  Next, as shown in FIG. 2, by driving the X-axis grinding wheel base 21 and the Z-axis grinding wheel base 22, the finishing grinding wheel 26 is made to face the sliding surface 121a. Further, by driving the X-axis moving body 31 and the Z-axis moving body 32, the laser oscillator 33 and the condenser lens 35 are opposed to the sliding surface 121a.

  Then, as shown in FIG. 3, by driving the first grindstone spindle head 24, the finishing grindstone 26 is rotated, and the finishing grindstone 26 is cut. At the same time, the laser oscillator 33 is driven after adjusting the energy density of the laser light L, the irradiation time, the number of times of irradiation, and the condensing position according to the diameter and depth of the dimple D processed into the sliding surface 121a. Thus, the laser beam L is applied to the sliding surface 121a through the laser beam transmission window 45.

  Thus, since the grinding process and the laser processing are simultaneously performed on the sliding surface 121a, the sliding surface 121a is ground by the finishing grindstone 26, and the sliding surface 121a being ground is applied to the sliding surface 121a. A plurality of dimples D are formed (see FIG. 6). 2 and 3 representatively illustrate the case of processing the sliding surface 122a among the processing of the sliding surfaces 121a to 125a.

  At the same time, the pumps 54, 56, and 58 are simultaneously driven during the above-described grinding and laser processing, and the grinding liquid C and the cooling water W are supplied to the sliding surface 121a.

  That is, when the pump 54 is driven, the grinding liquid C stored in the grinding liquid tank 51 is supplied to the injection nozzle 53a via the grinding liquid supply pipe 53, and then, from the injection nozzle 53, the finishing grindstone 26 and It injects toward the contact position between the sliding surfaces 121a. Thereby, lubrication and cooling between the finishing grindstone 26 and the sliding surface 121a are performed.

  When the pump 58 is driven, the grinding fluid C stored in the grinding fluid tank 51 is supplied to the filter 59 via the connection pipe 57. At this time, the grinding fluid C that has passed through the filter 59 becomes the cooling water W and is supplied as it is to the cooling water tank 52 via the connection pipe 57, while being supplied to the grinding liquid tank 51 via the return pipe 60. Returned.

  Further, when the pump 56 is driven, the cooling water W stored in the cooling water tank 52 is supplied into the inner supply pipe 71 via the cooling water supply pipe 55 and the branch pipe 55a. Next, the cooling water W supplied into the inner supply pipe 71 overflows from the overflow hole 71 a and then fills the outer supply pipe 72. And the cooling water W which filled the inside of the outer side supply pipe 72 is supplied in the state formed in the curtain shape toward the heating area | region where the laser beam L in the sliding surface 121a was irradiated from the laminarization slit 72a. Is done. Thereby, the heating region irradiated with the laser beam L on the sliding surface 121a is cooled.

  Here, since the cooling water W is supplied into the inner supply pipe 71 by driving the pump 56, the water pressure of the cooling water W is maintained at a high pressure, and the flow of the cooling water becomes a turbulent flow. ing.

  Moreover, in the multi-task machine 1, as described above, as a means for supplying the cooling water W to the sliding surfaces 121a to 125a, as shown in FIGS. 3 and 4, an inner supply pipe 71 is provided in the outer supply pipe 72. It uses a piping structure that houses it. By adopting such a piping structure, the cooling water W supplied into the inner supply pipe 71 overflows from the overflow hole 71 a and fills the outer supply pipe 72. Accordingly, the cooling water W is temporarily stored in the outer supply pipe 72, so that the water pressure of the cooling water W is maintained at atmospheric pressure, and the flow of the cooling water W is not turbulent. Disappear. Furthermore, the cooling water W temporarily stored in the outer supply pipe 72 is passed through the laminarization slit 72a, whereby the flow of the cooling water W flowing out of the laminarization slit 72a becomes a laminar flow.

  Therefore, since the cooling water W can be supplied toward the sliding surface 121a in a state where the water pressure is atmospheric pressure and the flow is a laminar flow, even if the cooling water W is supplied, The laser beam L can be sufficiently collected by the condenser lens 35 without being affected by the supply. That is, the laser beam L can be irradiated stably. Further, by making the rotation direction of the camshaft 100 and the supply direction of the cooling water W supplied from the laminarization slit 72a toward the sliding surface 121a the same direction, the flow of the cooling water W is turbulent. Can be prevented.

  Next, the used grinding fluid C and cooling water W flow down toward the bottom of the container 44 and then drain from the drain hole 44a onto the drain channel 14a. Thereafter, the grinding fluid C and the cooling water W drained into the drainage channel 14 a are returned to the grinding fluid tank 51.

  Then, as described above, when the grinding and laser processing on the sliding surface 121a are completed, the grinding processing and laser processing on the sliding surfaces 122a to 125a are sequentially performed in the same manner.

  Next, when the grinding and laser processing on the sliding surfaces 122a to 125a are completed, the rotary table 23 is rotated around the table rotation axis P to turn the finishing grindstone 26 to the retracted position, while the superfinishing grindstone 27 is Turn to machining position. Further, the laser oscillator 33 is retracted by driving the X-axis moving body 31 and the Z-axis moving body 32.

  Then, by driving the X-axis grinding wheel base 21 and the Z-axis grinding wheel base 22, the super-finishing grinding wheel 27 is opposed to the sliding surface 121a.

  Next, by driving the second grindstone spindle head 25, the superfinishing grindstone 27 is rotated and the superfinishing grindstone 27 is cut. Accordingly, since the grinding process is performed on the sliding surface 121a, the sliding surface 121a is further ground by the super finishing grindstone 27.

  And as above-mentioned, when the grinding process with respect to the sliding surface 121a is completed, the grinding process with respect to the sliding surfaces 122a-125a will be performed sequentially.

  During the above-described grinding of the sliding surfaces 121a to 125a, the sliding surfaces 121a to 125a are ground from the cutting direction (X-axis direction) by the finishing grindstone 26 and the superfinishing grindstone 27. Since the pressure acts, the camshaft 100 may be bent. Therefore, in such a case, as shown in FIG. 5, the action direction of the grinding pressure is appropriately applied to the sliding surfaces 121a to 125a that are not ground by the finishing grindstone 26 and the superfinishing grindstone 27. You may make it press the bending prevention member 80 from a reverse direction.

  In the above-described embodiment, the grinding processing by the grinding processing unit 11 and the laser processing by the laser processing unit 12 are simultaneously performed on one sliding surface 121a to 125a. You may make it perform each process simultaneously with respect to the sliding surfaces 121a-125a.

  Further, the multi-task machine 1 is configured to include a plurality of grinding units 11 and a plurality of laser processing units 12, and grinding processing by the plurality of grinding units 11 is performed on the plurality of sliding surfaces 121 a to 125 a. The laser processing by the laser processing unit 12 may be performed simultaneously. In such a configuration, a plurality of processes may be simultaneously performed on the separate sliding surfaces 121a to 125a.

  Furthermore, in the above-described embodiment, the workpiece to be processed by the combined processing machine 1 is the camshaft 100. However, in the combined processing machine 1, for example, a crankshaft employed in a vehicle engine is processed. It is also possible to do.

  Therefore, according to the multi-tasking machine 1 according to the present invention, the sliding surfaces 121a to 125a of the camshaft 100 are ground by the finishing grindstone 26 and the fine dimples D functioning as an oil reservoir are formed. By simultaneously performing the laser processing, the sliding surfaces 121a to 125a having excellent lubricity can be processed with high accuracy in a short time.

  In addition, the cooling water W is supplied to the heating area irradiated with the laser beam L on the sliding surfaces 121a to 125a in a state where the water pressure is atmospheric pressure and the flow is a laminar flow. Even if the water W is supplied, the laser light L can be sufficiently condensed by the condenser lens 35 without being affected by the supply. Thereby, since the laser beam L can be stably irradiated, the processing accuracy of the dimple D can be improved.

  Furthermore, when supplying the cooling water W to the sliding surfaces 121a to 125a, the supply direction of the cooling water W and the rotation direction of the sliding surfaces 121a to 125a of the camshaft 100 are the same direction. Even if the cooling water W contacts the sliding surfaces 121a to 125a, the flow of the cooling water W can be prevented from becoming turbulent.

  The present invention is applicable to a laser processing machine that processes a hollow portion that functions as an oil reservoir by irradiating a laser beam onto a sliding surface that forms an inner peripheral surface of a sliding member.

DESCRIPTION OF SYMBOLS 1 Combined processing machine 11 Grinding unit 12 Laser processing unit 13 Work mounting unit 26 Finishing grindstone 27 Superfinishing grindstone 33 Laser oscillator 35 Condensing lens 41 Work spindle stock 42 Work support base 44 Container 44a Drain hole 44b Inclined wall 45 Laser Light transmission window 51 Grinding liquid tank 52 Cooling water tank 71 Inner supply pipe 71a Overflow hole 72 Outer supply pipe 72a Laminarization slit 100 Camshafts 121 to 125 Sliding parts 121a to 125a Sliding surface C Grinding liquid W Cooling water L Laser beam D Dimple

Claims (7)

A workpiece mounting unit that rotatably supports the workpiece;
A grinding unit that grinds at least one of the sliding surfaces of a plurality of sliding surfaces forming an outer peripheral surface of the workpiece with a grindstone during rotation of the workpiece by the workpiece mounting unit;
A laser processing unit that irradiates at least one of the sliding surfaces with a laser beam during the grinding of the sliding surface by the grinding processing unit, and laser-processes a recess in the sliding surface. Combined machine. The multi-task machine according to claim 1,
A multi-tasking machine, wherein at least one sliding surface is simultaneously subjected to grinding by the grinding unit and laser processing by the laser processing unit. The combined processing machine according to claim 1 or 2,
A cooling water supply means is provided for cooling the sliding surface by supplying cooling water in a laminar flow to the heating region irradiated with the laser beam on the sliding surface. Combined machine. In the multi-tasking machine according to claim 3,
The combined processing machine, wherein the cooling water supply means supplies the cooling water in a state where the water pressure is atmospheric pressure. In the combined processing machine according to claim 3 or 4,
The cooling water supply means is
An inner supply pipe through which cooling water is supplied,
An overflow hole formed at an upper portion of the inner supply pipe and for allowing the cooling water supplied into the inner supply pipe to flow out of the inner supply pipe;
The inner supply pipe is housed therein, and the outer supply pipe that maintains the water pressure of the filled cooling water at atmospheric pressure by filling the cooling water flowing out of the overflow hole,
A multi-tasking machine comprising: a laminar slit formed at a lower portion of the outer supply pipe and supplying the cooling water filled in the outer supply pipe toward the heating region in a laminar flow state. The combined processing machine according to any one of claims 3 to 5,
The multi-tasking machine, wherein a rotation direction of the workpiece by the mounting unit and a cooling water supply direction by the cooling water supply means are the same direction. In the combined processing machine according to any one of claims 1 to 6,
The composite processing machine, wherein the grinding unit and the laser processing unit are arranged to face each other with the workpiece interposed therebetween.

Images