JP4883137B2 - Cam device - Google Patents

Description

  The present invention relates to a cam device that slides a cam slide with a cam driver and performs processing such as drilling and bending on a workpiece such as a thin plate with a tool mounted on the cam slide.

  The cam device of the hanging cam type is usually complementary to the sliding surface so that the cam driver is fixedly supported on the cam driver support base and the sliding surface of the cam driver is movably contacted. The cam slide has a sliding surface of a different shape, and the cam slide can move by being guided by the sliding surface of the cam driver by contact between the sliding surface of the cam slide and the sliding surface of the cam driver. And a cam slide support base that suspends and movably supports the cam slide.

  In such a suspension cam type cam device, the cam slide support base is provided with a suspension support mechanism in order to suspend the cam slide from the cam slide support base. The suspension jaw member is detachably fixed to the lower surface of each side wall portion of the cam slide support base, and the distal end portion of the suspension jaw member is formed on both longitudinal end surfaces of the cam slide. It is arranged in the recess.

  In this suspension cam type cam device, when the suspension jaw member of the suspension mechanism is dropped from the both side walls of the cam slide support base, the cam slide is also dropped from the cam slide support base, and this dropout does not occur during operation. If this happens, there is a risk of unexpected large accidents such as cam slide and cam driver damage.

  For detachment and maintenance of the cam slide, the hanging jaw member is normally detachably fixed to both side walls of the cam slide support base with bolts and the like. There is a risk that the suspended jaw member will fall off due to looseness. For this reason, in order to prevent an accident caused by the cam slide falling off, the suspension cam type cam device is further provided with a fall prevention mechanism. This fall prevention mechanism is provided on the cam slide support base. A slit is provided at the base between both side walls, and the cam slide is suspended and supported through the slit. Therefore, when replacing the cam slide, the cam slide support base itself is supported by the cam slide. The base is supported and removed from the base connected to the hydraulic ram, and the cam slide support base must be reversed, requiring a lot of time and requiring extremely large and difficult work. To do.

  The present invention has been made in view of the above-mentioned points, and an object of the present invention is to preferably prevent the cam slide from dropping from the cam slide support base, and to make it difficult to attach and detach the cam slide. It is to provide a cam device that does not give.

  A cam device according to a first aspect of the present invention includes a cam driver that is fixedly supported by a cam driver support base, and the sliding surface so as to be movable in contact with the sliding surface of the cam driver. The cam driver has a sliding surface with a shape complementary to the cam slide and extends long in a direction orthogonal to the moving direction, and the sliding surface of the cam slide and the sliding surface of the cam driver are in contact with each other. The cam slide support base that suspends and supports the cam slide so that the cam slide can move while being guided by the sliding surface of the cam slide, and the fall prevention that prevents the cam slide from dropping from the cam slide support base The cam slide support base includes both side wall portions disposed at both ends in the longitudinal direction of the cam slide, a front wall portion disposed forward and rearward in the moving direction of the cam slide, and Each of the wall portion and the both side wall portions includes a suspension support mechanism that suspends and supports the cam slide so that the fall prevention mechanism penetrates the cam slide between the both side wall portions. An end portion is provided with a rod fixed to each of the front wall portion and the rear wall portion.

  In the cam device according to the first aspect, the fall prevention mechanism includes a rod penetrating the cam slide between both side wall portions of the cam slide support base, and each end portion of the rod is a front wall portion of the cam slide support base. Because it is fixed to the rear wall and the rear wall, the rod is released from the cam slide by releasing the rod from the cam slide by releasing the rod from the front wall and the rear wall. The connection that controls the function can be easily released, and the cam slide can be attached and detached without difficulty.

  In the cam device according to the second aspect of the present invention, in the cam device according to the first aspect, the cam slide has a through-hole having a diameter larger than the diameter of the rod at an intermediate portion in the longitudinal direction. The rod passes through the through hole with a gap through the cam slide.

  According to the cam device of the second aspect, since the rod penetrates the cam slide with a gap, the rod does not become an obstacle in the movement of the cam slide, and the cam slide is guided to the sliding surface of the cam driver. Can be moved smoothly.

  In the cam device according to the third aspect of the present invention, in the cam device according to the second aspect, a cylindrical sliding bearing is disposed in the gap so as to prevent the cam slide from being bent.

  According to the cam device of the third aspect, since the intermediate portion in the longitudinal direction of the cam slide is supported by the rod via the cylindrical slide bearing, it is possible to prevent the cam slide from being bent, and the cam slide position fluctuations due to this deflection. Therefore, the tool can be accurately placed at the machining position of the workpiece.

  In the cam device of the fourth aspect of the present invention, in the cam device of any one of the first to third aspects, one end of the rod is inserted into a through hole formed in the front wall portion or the rear wall portion. The other end of the rod is disposed in a recess in a lower opening formed in the lower surface of the rear wall portion or the front wall portion, and is detachably fixed to the rear wall portion or the front wall portion.

  In the cam device of the fourth aspect, one end of the rod is inserted into the through hole, and the other end of the rod is disposed in the recess of the lower opening and is detachably fixed. Is removed from the rear wall or front wall, and then the rod is pulled out from the cam slide by pulling out one end of the rod from the front wall or rear wall, thereby connecting the fall prevention mechanism to the cam slide. Can be released very easily, and the cam slide can be attached and detached without difficulty.

  In the cam device according to the fifth aspect of the present invention, in any one of the cam devices according to the first to fourth aspects, the suspension support mechanism is a suspension jaw fixedly detachably fixed to the lower surfaces of both side walls. A cam slide is movably suspended by disposing a distal end portion of the suspension jaw member in a recess formed on both end surfaces in the longitudinal direction of the cam slide.

  According to the cam device of the fifth aspect, the suspending jaw members that suspend the cam slide are detachably fixed to the lower surfaces of the both side walls of the cam slide support base, Along with the unlocking of the rod to the front wall portion and the rear wall portion, the suspension jaw member can be removed from the lower surface of each side wall portion, and thus the cam device of the first aspect Together, the cam slide can be removed and attached without difficulty.

  ADVANTAGE OF THE INVENTION According to this invention, the cam apparatus which can prevent preferably the fall from the cam slide support base of a cam slide, and does not give difficulty to the removal | desorption operation | work of a cam slide can be provided.

FIG. 1 is a cross-sectional view taken along the line II of FIG. 2 showing a preferred example of an embodiment of the present invention. FIG. 2 is a front sectional view of a preferred example of an embodiment of the present invention. FIG. 3 is a partially enlarged explanatory view of FIG. FIG. 4 is a partially enlarged explanatory view of FIG. 5 is a cross-sectional view taken along line VV shown in FIG. FIG. 6 is an operation explanatory diagram of the example shown in FIG. FIG. 7 is a partially enlarged view of another preferable example of the embodiment of the present invention. FIG. 8 is a partially enlarged view of another preferable example of the embodiment of the present invention. FIG. 9 is a cross-sectional view of still another preferred example of the embodiment of the present invention.

  Next, the present invention and its embodiments will be described in more detail with reference to the examples shown in the drawings. The present invention is not limited to this example.

  1 to 5, the suspension cam type cam device 1 of this example moves to a cam driver 3 that is fixedly supported by a cam driver support base 2 and a sliding surface 4 of the cam driver 3. A cam slide having a sliding surface 5 having a shape complementary to the sliding surface 4 so as to freely contact and extending in the moving direction, that is, the direction orthogonal to the X and Y directions, that is, the L direction. 6 and the sliding surface 5 of the cam slide 6 and the sliding surface 4 of the cam driver 3 are brought into contact with the sliding surface 4 of the cam driver 3 so that the cam slide 6 can move in the X direction. A cam slide support base 7 that supports the slide 6 movably in the X and Y directions, and a fall prevention mechanism 8 that prevents the cam slide 6 from dropping from the cam slide support base 7 are provided.

  The cam driver 3 includes a plurality of cam driver members 21a and 21b separated from each other in the longitudinal direction (L direction) of the cam slide 6, in this example, each of the cam driver members 21a and 21b. The same shape is formed in the same manner, and is fixed to the cam driver support base 2 with bolts 22a and 22b. Hereinafter, the cam driver member 21a will be described, and for the cam driver member 21b, reference numeral b is given to the corresponding configuration, and only the illustration will be given as necessary.

  The cam driver member 21a has a recess 25a, a cam driver base portion 26a fixed to the cam driver support base 2 by bolts 22a, and a pair of sliding plate portions fixed to the cam driver base portion 26a by bolts 27a. 28a, and one surface of each of the sliding plate portions 28a is the sliding surface 4 of the cam driver 3.

  The cam slide 6 has a long cam slide body 31 in which the sliding surface 5 is formed on the inclined surface 30, and step recess surfaces 40 a on both end surfaces 33 a and 33 b in the longitudinal direction of the cam slide body 31 by bolts 32. Each of the sliding surfaces 4 so that the cam slide main body 31 is movably in contact with the respective sliding surfaces 4 of the cam driver members 21a and 21b. And the above-mentioned sliding surface 5 having a complementary shape. Rectangular recesses 35a and 35b are formed in both end faces 33a and 33b of the cam slide main body 31, respectively, and the cam slide main body 31 has a diameter larger than the diameter of a rod 36 to be described later at an intermediate portion in the longitudinal direction. The through-hole 37 is provided.

  The cam slide support base 7 has a base portion 41 formed along the longitudinal direction of the cam slide 6 and a plurality of sliding plates 44 facing the upper surface 42 of the cam slide main body 31 and fixed to the base portion 41 with bolts 43. And both side wall portions 45a and 45b that are integrally formed at both ends of the base portion 41 and disposed at both ends in the longitudinal direction of the cam slide 6, and integrally with the front and rear ends of the base portion 41 and the cam slide 6 The cam slide 6 is movable along each of the front wall portion 46 and the rear wall portion 47, and both side wall portions 45a and 45b, which are formed along the longitudinal direction and are arranged forward and rearward in the moving direction of the cam slide 6. Suspension support mechanisms 48a and 48b that support the suspension of the cam slide 6 and buffer means 49a and 4 for buffering the impact of the cam slide 6 on the rear wall 47 when the cam slide 6 returns to the initial position. And and a b, is fixed to the base 50 of the base portion 41 is attached to a hydraulic ram or the like by a bolt 51, it is arranged.

  The base 41 has recesses 52a and 52b, and is formed symmetrically with respect to the line II in FIG. Each lower surface 53 of the sliding plate 44 is slidably in contact with the upper surface 42 of the cam slide main body 31 of the cam slide 6, and the sliding plate 34 has inner side surfaces 54a and 54b of the side wall portions 45a and 45b. Is slidably touching.

  The suspension mechanisms 48a and 48b are configured in the same manner as each other. Hereinafter, the suspension mechanism 48a will be described, and the suspension mechanism 48b is denoted by a symbol b for the corresponding configuration, and only illustrated if necessary. To do.

  The suspending mechanism 48a includes a plate member 63a as a suspending jaw member that is detachably fixed to each lower surface 61a of the side wall portion 45a by a bolt 62a. The cam slide body 31 is disposed in a recess 35a formed in the end surface 33a in the longitudinal direction, whereby the suspension mechanism 48a suspends the cam slide 6 so as to be movable in the X and Y directions.

  Since the buffer means 49a and 49b are arranged corresponding to the recesses 52a and 52b, respectively, and are configured in the same manner, the buffer means 49a will be described below, and the buffer means 49b will not be described. Omitted.

  The buffer means 49a includes a plate member 66a fixed to the rear wall portion 47 with a bolt 65a, and a buffer member 67a such as rubber attached to the plate member 66a.

  The fall prevention mechanism 8 passes through the through hole 37 of the cam slide main body 31 and with a gap through the cam slide main body 31 at a substantially middle portion between the both side wall portions 45a and 45b. The rod 36 is fixed to each of the portion 46 and the rear wall portion 47.

  One end portion 71 of the rod 36 is inserted into the front wall portion 46 or the rear wall portion 47, in this example, the through hole 73 formed in the front wall portion 46, and the other end portion 72 of the rod 36 is the rear wall portion. 47 or the front wall portion 46, in this example, a bolt that is disposed in the recess 76 of the lower opening 75 formed in the lower surface 74 of the rear wall portion 47 and is inserted into the through hole 77 formed in the other end portion 72. 78, and is removably fixed to the rear wall portion 47.

  In addition to the above, the cam device 1 of this example includes positioning mechanisms 91a and 91b for positioning the cam slide 6 with respect to the cam driver 3, corresponding to the cam driver members 21a and 21b, and a recess 52a and Corresponding to each of 52b, return mechanisms 92a and 92b for returning the cam slide 6 to the initial position are arranged. The positioning mechanism 91a and the positioning mechanism 91b are configured similarly to each other. Hereinafter, the positioning mechanism 91a will be described. For the positioning mechanism 91b, a corresponding configuration is denoted by reference sign b and only illustrated as necessary. The return mechanisms 92a and 92b are also configured in the same manner. Hereinafter, the return mechanism 92a will be described, and for the return mechanism 92b, a corresponding configuration is denoted by b and only illustrated if necessary.

  The positioning mechanism 91a is fixed to the cam driver base 26a at the recess 25a by a bolt 101a, and a sliding fitting receiving member 102a having a substantially convex V-shaped cross section on the upper surface side, and an inclination of the cam slide body 31 by the bolt 103a. The lower surface side is fixed to the surface 30 and includes a sliding fitting member 104a formed in a substantially concave V-shaped cross section complementary to the upper surface side of the generally convex V-shaped cross section of the sliding receiving member 102a.

  The positioning mechanism 91a is slidably fitted between the sliding fitting receiving member 102a and the sliding fitting member 104a on the upper surface side of the substantially convex V shape and the lower surface side of the substantially concave V shape. The cam slide 6 is positioned with respect to the cam driver 3 in the L direction, which is the longitudinal direction.

  The return mechanism 92a disposed in the recess 52a includes a connecting member 112a having an L-shaped cross section fixed to the upper surface 42 of the cam slide body 31 by a bolt 111a, and a hooked bush fitted to the bifurcated portion 113a of the connecting member 112a. A rod 115a disposed through 114a, and a coil spring 116a as elastic means disposed around the rod 115a so as to elastically bias the connecting member 112a in the X direction, One end 121a of the rod 115a is supported by a support member 123a fixed to the base 41 by a bolt 122a, and the other end 124a is supported by a support member 126a fixed to the base 41 by a bolt 125a. 46 and the rear wall 47, and the coil spring 116a is provided between the support member 123a and the bush 114a. It is arranged.

  The return mechanism 92a is a descent of the base 50 and the cam slide support base 7 by the operation of a hydraulic ram (not shown) connected to the base 50, as shown in FIGS. After the cam slide 6 is moved in the Y direction by the cam driver members 21a and 21b, when the cam slide support base 7 is raised in the U direction together with the base 50 by the reverse operation of the hydraulic ram, the cam slide 6 is turned into a coil spring. The cam slide 6 is returned to the initial position shown in FIG. 6 by being moved in the X direction by the elastic force of 116a.

  When the hydraulic ram is operated with the cam slide 6 returned to the initial position shown in FIG. 6 and the cam slide support base 7 is lowered together with the base 50 in the D direction, 6 shows that the sliding surface 5 comes into contact with the sliding surface 4 of the cam driver 3 and the sliding fitting member 104a has a substantially concave V shape in section on the upper surface side of the sliding fitting receiving member 102a. As shown in FIGS. 1, 2, and 5, it is moved in the Y direction by the slidable fitting on the lower surface side of the shape, and is thus attached to one end surface of the cam slide body 31 by the bolt 131. For example, the tool 132 is bent. After the bending process, when the hydraulic ram is reversely operated and the cam slide support base 7 is lifted together with the base 50 in the U direction, the cam slide 6 moves the sliding surface 5 to the sliding surface 4 of the cam driver 3. Along with the release of the contact and the release of the sliding fitting member 104a on the lower surface side of the substantially concave V shape of the sliding fitting member 104a to the upper surface side of the substantially convex V shape of the sliding fitting receiving member 102a, the return mechanisms 92a and 92b As shown in FIG. 6, it is moved in the X direction and returned to the initial position.

  By the way, in the cam apparatus 1, the fall prevention mechanism 8 includes the rod 36 that penetrates the cam slide 6 between the side wall portions 45 a and 45 b of the cam slide support base 7, and each end portion 71 and 72 of the rod 36 has Since the front wall portion 46 and the rear wall portion 47 of the cam slide support base 7 are fixed to the front wall portion 46 and the rear wall portion 47, the fixing of the rod 36 to the front wall portion 46 and the rear wall portion 47 is released. By pulling out from the cam slide 6, the connection that controls the fall prevention function by the fall prevention mechanism 8 to the cam slide 6 can be easily released, and the cam slide 6 can be attached and detached without difficulty.

  Further, according to the cam device 1, since the rod 36 penetrates the cam slide 6 with a gap in the through hole 37, the rod 36 does not become an obstacle in the movement of the cam slide 6, and the cam slide 6 is moved to the cam driver. 3 can be guided and smoothly moved.

  In addition, in the cam device 1, one end 71 of the rod 36 is inserted into the through hole 73, and the other end 72 of the rod 36 is disposed in the recess 76 of the lower opening 75 and is detachably fixed. 78, the other end 72 of the rod 36 is removed from the rear wall 47, and then the one end 71 of the rod 36 is pulled out from the front wall 46, and the rod 36 is pulled out from the cam slide 6, The connection of the fall prevention mechanism 8 to the cam slide 6 can be released very easily, and the cam slide 6 can be attached and detached without difficulty.

  Further, according to the cam device 1, the plate members 63a and 63b suspending the cam slide 6 are detachably fixed to the lower surfaces 61a and 61b of the side walls 45a and 45b of the cam slide support base 7, respectively. For this reason, the fixing of the rod 6 to the front wall portion 46 and the rear wall portion 47 is released, the bolts 62a and 62b are loosened, and the lower surfaces 61a and 61b of the side wall portions 45a and 45b of the plate members 63a and 63b, respectively. The cam slide 6 can be removed and attached without difficulty.

  In the above, one end portion 71 of the rod 36 is inserted into the through hole 73 so as not to drop downward, but instead of the through hole 73, as shown in FIGS. An opening recess 140 is formed, and is arranged in the recess 140 of the lower opening by a fixing plate 142 that is fixed to the front wall portion 46 with bolts 141 so as to straddle the recess 140. Further, the one end portion 71 of the rod 36 may be prevented from falling off from the front wall portion 46.

  In the cam device 1 described above, the rod 36 is passed through the cam slide body 31 with a gap. In this gap, the cylindrical slide bearings 151 and 152 are fixed to the cam slide body 31 as shown in FIG. And the intermediate portion in the longitudinal direction of the cam slide 6 may be supported by the rod 36 via the cylindrical slide bearings 151 and 152. By doing so, the long cam slide 6 Even so, the bending can be prevented, and the position of the cam slide 6 does not change due to the bending, and the tool 132 can be more accurately arranged at the processing position of the workpiece.

DESCRIPTION OF SYMBOLS 1 Cam apparatus 2 Cam driver support base 3 Cam driver 4, 5 Sliding surface 6 Cam slide 7 Cam slide support base 8 Fall prevention mechanism 36 Rod 45a, 45b Side wall part 46 Front wall part 47 Rear wall part 48a, 48b Hanging Support mechanism

Claims (5)

A cam driver that is fixedly supported by the cam driver support base, and a sliding surface that is complementary to the sliding surface so as to be movable in contact with the sliding surface of the cam driver. The cam slide is moved by being guided by the cam driver sliding surface by the cam slide extending in a direction orthogonal to the moving direction, and the sliding surface of the cam slide and the sliding surface of the cam driver. A cam slide support base that suspends and supports the cam slide in a movable manner, and a fall prevention mechanism that prevents the cam slide from dropping from the cam slide support base. On both side walls disposed at both ends in the longitudinal direction of the cam slide, on front and rear walls disposed on the front and rear in the moving direction of the cam slide, and on both side walls, respectively. A suspension support mechanism for suspending and supporting the cam slide in a movable manner. The fall prevention mechanism penetrates the cam slide between both side wall portions, and each end portion of the front wall portion and the rear wall portion is provided. The rod of the fall prevention mechanism penetrates the cam slide with a gap with respect to the cam slide, and one end of the rod of the fall prevention mechanism has a front wall portion or The other end of the rod of the fall prevention mechanism is inserted into a through hole formed in the rear wall, and is disposed in a recess in a lower opening formed on the lower surface of the rear wall or the front wall, and A cam device that is detachably fixed to a rear wall portion or a front wall portion .   And a return mechanism for returning the cam slide to the initial position, the return mechanism being fixed to the cam slide and having a bifurcated portion, and a front wall portion through the bifurcated portion of the coupling member. A rod disposed between the rear wall portion and a coil spring disposed around the rod and elastically biasing the connecting member toward the rear wall portion. The cam apparatus of description.   The cam slide has a through-hole having a diameter larger than the diameter of the rod of the fall prevention mechanism in the middle portion in the longitudinal direction, and the rod of the fall prevention mechanism has a gap in the cam slide through this through-hole. The cam apparatus of Claim 1 or 2 which has penetrated.   The cam apparatus according to claim 3, wherein a cylindrical slide bearing is disposed in the gap so as to prevent the cam slide from being bent. The suspension support mechanism has suspension jaw members that are detachably fixed to the lower surfaces of both side wall portions, and the distal ends of the suspension jaw members are formed on both longitudinal end surfaces of the cam slide. The cam device according to any one of claims 1 to 4, wherein the cam slide is suspended so as to be movable in the recessed portion.

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