JPH0567417U - Grooving equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] A tool cassette in which a cutting tool for machining a groove is attached to the upper surface of a plate-like work W can be easily positioned and accurately attached to a Z-axis slider. An object is to provide a groove processing device. In order to achieve the above object, a groove machining device for machining a groove on the upper surface of a work W fixed on the work table 11 is provided, which is movable to the frame 7 in the left-right direction above the work table 11. Supported by X
A Z-axis slider 19 is provided on the shaft slider 17 so as to be movable up and down, and a tool cassette 99A to 99C having cutting tools 97A to 97C is detachably attached to a cassette storage recess 101 provided on the Z-axis slider 19. The pressing tool 137 for pressing and fixing the two contact surfaces of the tool cassettes 99A to 99C against the two restriction surfaces of the cassette housing recess 101 is provided in the cassette housing recess 101.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a groove machining apparatus for machining a groove having an appropriate cross-sectional shape on the upper surface of a plate-like work, and more specifically, for attaching / detaching / changing a tool cassette holding a cutting tool to / from a tool holder base. The present invention relates to a groove processing device that can be easily performed.

[0002]

[Prior Art]

 As a prior art example of the present invention, there is, for example, British Patent No. 2206513.

[0003]

[Problems to be solved by the device]

 In a conventional groove machining device, a Z-axis slider is mounted on an X-axis slider movably supported in a horizontal direction (X-axis direction) on a frame so that the Z-axis slider can be moved up and down, and a cutting tool such as a cutting tool is provided under the Z-axis slider. Generally, a tool cassette equipped with is attached so that it can be detached and replaced.

There is a problem that it is difficult to accurately mount the tool cassette on the slider when mounting the tool cassette with the cutting tool mounted on the tool cassette.

[0005]

[Means for Solving the Problems]

 In view of the above-mentioned problems, the present invention provides a groove machining device for machining a groove on the upper surface of a work fixed on a work table, which is movable in the left-right direction on a frame at a position above the work table. A Z-axis slider is vertically movably mounted on the supported X-axis slider, and a tool cassette equipped with a cutting tool is removably mounted on the cassette storage recess provided in the Z-axis slider. A pressing tool for pressing and fixing the two contact surfaces of the tool cassette against the two restriction surfaces of the cassette housing recess is provided in the cassette housing recess.

[0006]

[Action]

 In the above configuration, when the tool cassette is mounted in the cassette storage recess of the Z-axis slider, the two contact surfaces of the tool cassette are pressed against the two regulating surfaces of the cassette storage recess to accurately position the tool cassette. It is possible to easily attach to the correct position.

[0007]

【Example】

 The overall configuration of the groove processing apparatus according to the present embodiment is almost the same as the configuration of the groove processing apparatus described in British Patent No. 2206513. Therefore, the overall configuration will be briefly described as follows. Detailed description is omitted.

Now, referring to FIGS. 1 and 2, the groove processing apparatus 1 according to the present embodiment includes a box-shaped lower frame 3 that is long in the left-right direction (X-axis direction). The side frames 5L and 5R are integrally erected and fixed at both left and right ends of the. The upper portions of both side frames 5L and 5R are integrally connected by a vertical front plate 7 and a rear plate 9.

The lower frame 3 is provided with a work table 11 for supporting a plate-shaped work W. Further, the lower frame 3 holds the rear end edge of the work W to move the work W in the front-back direction (Y A movement positioning device 13 that moves and positions in the axial direction) is provided. Since the configuration of the moving / positioning device 13 is known, a detailed description of the configuration and operation of the moving / positioning device 13 is omitted.

In order to perform groove machining on the upper surface of the work W moved and positioned in the front-rear direction by the movement positioning device 13, a machining head device 15 equipped with a cutting tool is provided above the work table 11 in the left-right direction. It is provided so that it can be moved to.

The processing head device 15 is composed of an X-axis slider 17 which is movable in the left-right direction and a Z-axis slider 19 which is supported by the X-axis slider 17 so as to be vertically movable. The Z-axis slider 19 is equipped with a cutting tool 21 for grooving the upper surface of the work W.

In order to move the processing head device 15 in the left-right direction, guide rails 23 extending in the left-right direction are attached to the front plate 7, and both ends of the ball screw 25 are attached to the left and right side frames 5L, 5R. The section is supported.

As shown in more detail in FIG. 3, the X-axis slider 17 is supported on the guide rail 23 via a slide block 27 so as to be movable in the left-right direction. In order to move the X-axis slider 17 in the left-right direction along the guide rail 23, a ball nut 29 rotatably provided on the X-axis slider 17 is movably engaged with the ball screw 25. A belt 39 wound around an output pulley 37 of an X-axis motor 35 supported by the X-axis slider 17 via a bracket 33 is wound around a sprocket 31 integrally provided on the ball nut 29.

With the above configuration, by appropriately driving the X-axis motor 35 and appropriately rotating the ball nut 29, the X-axis slider 17 is allowed to move in the left-right direction by itself.

As shown in FIGS. 3 and 4, a plurality of vertical guide members 41 are provided on the front surface of the X-axis slider 17, and the Z-axis slider 19 is vertically movable on the guide members 41. You are being guided.

In order to move the Z-axis slider 19 up and down, a ball screw 45 is vertically and rotatably supported by a bearing block 43 attached to the upper portion of the X-axis slider 17, and the ball screw 45 is mounted on the ball screw 45. A ball nut 47 fixed to the Z-axis slider 19 is screwed so as to be vertically movable.

In order to rotate the ball screw 45, a pulley 49 is attached to the upper end of the ball screw, and a belt 55 wound around an output pulley 53 provided on the Z-axis motor 51 is wound around the pulley 49. is there. The Z-axis motor 51 is mounted on a base plate 59 mounted on the X-axis slider 17 via a plurality of brackets 57.

Further, a brake device 61 is mounted on the base plate 59 for braking the ball screw 45. In this brake device 61, a brake pin 65 whose lower surface is in slidable contact with the upper surface of the pulley 49 is installed in a cylindrical guide tube 63 provided upright on the base plate 59 so as to be vertically movable. .. A spring 69 is provided between the nut member 67 and the stepped portion of the brake pin 65, which are screwed on the upper portion of the guide cylinder 63 so as to be positionally adjustable so as to press the brake pin 65 downward. It is equipped with ammunition.

With the above configuration, when the Z-axis motor 51 is appropriately driven to rotate, the ball screw 45 is rotated via the pulley 53, the belt 55, and the pulley 49, so that the Z-axis slider 19 can be rotated relative to the X-axis slider 17. Will be moved up and down.

When the ball screw 45 is rotated as described above, the lower surface of the brake pin 65 of the brake device 61 is in sliding contact with the upper surface of the pulley 49 attached to the ball screw 45 to perform a braking action. Therefore, after the rotation of the ball screw 45 is stopped, the ball screw 45 is braked and held so as not to easily rotate due to vibration or the like. The braking force due to the sliding contact of the brake pin 65 can be easily adjusted by adjusting the position of the nut member 67 to adjust the biasing force of the spring 69.

The Z-axis slider 19 has a substantially rectangular parallelepiped shape, and an eaves projecting forward (to the left in FIG. 3) is provided at an upper portion of the Z-axis slider 19, as shown in FIG. A projecting portion 71 is provided, and a cylindrical bearing portion 73 is formed near the lower portion so as to project to the front side.

A substantially donut-shaped tool holder base 75 is rotatably fitted and supported on the outer peripheral side of the cylindrical bearing portion 73, and a rotary shaft 77 is rotatable on the inner peripheral side of the bearing portion 73. It is inserted and supported.

A large-diameter flange portion 77 F is formed on the outer end portion (left end portion in FIG. 3) of the rotary shaft 77. A gear 79 is formed on the outer peripheral surface of the flange portion 77F, and the flange portion 77F is integrally connected to the tool holder base 75 via a plurality of bolts (not shown). That is, the tool holder base 75 and the rotary shaft 77 are integrated with each other so as to rotate in a pair.

As shown in detail in FIG. 3, the inner end portion (the right end portion in FIG. 3) of the rotary shaft 77 is slidable in a cylinder chamber 81 formed in the Z-axis slider 19. A piston 83 fitted in the above is integrally attached, and a disc spring 85 is elastically mounted between the piston 83 and the bottom of the cylinder chamber 81. The cylinder chamber 81 is closed by a cap 87.

As can be understood from the above structure, the rotary shaft 77 is always urged to the right in FIG. 3 by the action of the disc spring 85, and the flange 77F of the rotary shaft 77 is It is in a state of being pressed against the end face of the cylindrical bearing portion 73. Further, when the working fluid is supplied into the cylinder chamber between the piston 83 and the cap 87 and the rotary shaft 77 is slightly moved leftward in FIG. 3 against the disc spring 85, the bearing portion 73 Since the flange portion 77F of the rotating shaft 77 is separated from the end surface, the rotating shaft 77 can be lightly rotated.

In order to rotate the rotary shaft 77 and the integrated tool holder base 75, as shown in FIG. 4, a bracket 89 is provided at one end of the protrusion 71 of the Z-axis slider 19 by a plurality of bolts. Is attached to the bracket 89, and an indexing motor 91 is attached to the bracket 89. A timing belt 95 is wound around the output gear 93 provided on the output shaft of the motor 91 and the gear 79.

Therefore, it will be understood that the rotary shaft 77 and the tool holder base 75 can be appropriately rotated by appropriately driving the motor 91.

As described above, the tool holder base 75 has a substantially donut shape, and a plurality of sets of cutting tools 97A, 97B, 97C are attached to a plurality of positions on the periphery of the tool holder base 75. The cassettes 99A, 99B, and 99C are attached for attachment / detachment exchange.

That is, a plurality of cassette accommodating recesses 101 to which the tool cassettes 99A, 99B and 99C are detachably attached are formed on the outer peripheral portion of the front surface of the tool holder base 75.

The configuration of each of the tool cassettes 99A, 99B, 99C is substantially the same, and therefore the case of one tool cassette 99A will be described in detail.

The cutting tool 97A is attached to the tool cassette 99A by fastening the fastening block 103 to the tool cassette 99A with a plurality of fastening bolts 105 as shown in FIG.

The tightening block 103 has a wedge shape, and the structure for mounting the cutting tool 97A on the tool cassette 99A is not much different from the structure of the above-mentioned British Patent No. 2206513. A more detailed description of is omitted.

The tool cassette 99A is fixed to the cassette storage recess 101 by a plurality of mounting bolts 107, and the tool cassette 99A has a cutting fluid supply hole for supplying cutting fluid to each of the attached cutting tools 97A. 109 is provided, and an air hole 111 communicating with the outlet of the cutting fluid supply hole 109 is provided.

The cutting fluid supply hole 109 and the air hole 111 are communicated with the cassette housing recess 101 and the cutting fluid supply hole 109H and the air hole 111H provided on the tool holder base 75. The cutting fluid supply hole 109H and the air hole 111H are in communication with the supply hole 113 and the air hole 115 provided in the flange portion 77F of the rotary shaft 77.

The supply hole 113 and the air hole 115 are connected to a rotary joint 119 rotatably attached to the front end surface of the rotary shaft 77 via a donut-shaped attachment 117. A supply pipe 121 for supplying cutting fluid, an air blow pipe 123, and a suction pipe 125 are connected to the rotary joint 119.

Both the air blow pipe 123 and the suction pipe 125 are connected to the air hole 115, and a discharge part of an air pump (not shown) is operated by operating a switching valve (not shown) such as a solenoid valve. Alternatively, the suction unit is switched and connected.

As can be understood from the configuration as described above, the cutting fluid can be supplied to the cutting tool 97A through the supply pipe 121, the rotary joint 119, the supply hole 113, and the cutting fluid supply holes 109H and 109. The machining fluid can be supplied to the cutting portion via the tool 97A.

When supplying the machining liquid to the cutting portion as described above, by closing the suction pipe 125 side and supplying air from the air blow pipe 123 to the air holes 115, the air holes 111H and 111 are formed. Air is then supplied to the outlet of the cutting fluid supply hole 109, and the cutting fluid can be made into an oil mist. After the cutting process is completed, the air blow pipe 123 side is closed and the air in the air hole 115 is sucked by the suction pipe 125. As described above, the air hole 115 passes through the air holes 111H and 111. Since it communicates with the outlet of the cutting fluid supply hole 109, excess cutting fluid near the outlet of the cutting fluid supply hole 109 can be sucked and removed. Therefore, it is possible to prevent excess cutting fluid from dripping after the supply of cutting fluid is stopped.

In order to accurately position the tool cassette 99A with respect to the cassette accommodating recess 101, the cassette accommodating recess 101 is provided with two abutting surfaces 127A and 127B in a direction orthogonal to the tool cassette 99A. The restriction surfaces 101A and 101B for restricting contact are formed in directions orthogonal to each other.

Therefore, by bringing the contact surfaces 127A, 127B of the tool cassette 99A into contact with the respective regulation surfaces 101A, 101B in the cassette housing recess 101, the tool cassette 99A can be accurately positioned in the cassette housing recess 101. Can be positioned at.

In order to easily attach / detach the tool cassette 99A to / from the cassette housing recess 101, locking grooves 129L and 129R are formed on the left and right side surfaces of the tool cassette 99A, respectively. A taper portion at the tip of the locking pin 131 protruding from the regulation surface 101B to the cassette housing recess 101 is engaged with the right locking groove 129R. The locking pin 131 is slidably supported in a hole 75H provided in the tool holder base 75, and a spring 135 mounted between the spring pin 133 and a spring seat 133 fixed in the hole 75H. By the action, the locking pin 131 is urged so as to project into the cassette housing recess 101.

In the locking groove 129L on the left side of the tool cassette 99A, a pressing fixture 137 for pressing and fixing the contact surfaces 127A and 127B of the tool cassette 99A to the regulation surfaces 101A and 101B of the cassette housing recess 101. Are engaged.

More specifically, as shown in FIG. 6, the pressing fixture 137 is made of a pin similar to the locking pin 131, and is spring-loaded between the spring seat 139 and the spring seat 139. It is urged by the action of 141 so as to project into the cassette housing recess 101.

In order to release the fixing of the tool cassette 99A by the pressing fixture 137, a shaft 143 having a lever 143L is rotatably provided on the tool holder base 75, and the end face of the shaft 143 is At the eccentric position, a pressing pin 145 that pushes the flange portion 137F provided at the end of the pressing fixture 137 against the spring 141 is attached. A ball 147B of a ball plunger 147 (see FIG. 5) is engaged with the circumferential groove 143G of the shaft 143 to prevent the shaft 143 from coming off.

As can be understood from the above-mentioned configuration, the tool cassette 99A is engaged with the cassette housing recess 101, and the engagement pin 131 is engaged with the engagement groove 129R on the right side of the tool cassette 99A. After that, by engaging the pressing fixture 137 into the locking groove 129L on the left side, the contact surfaces 127A and 127B of the tool cassette 99A are pressed against the restricting surfaces 101A and 101B of the cassette housing recess 101 by the action of the spring 141. Contacted and positioned.

Therefore, after the tool cassette 99A is positioned as described above, the mounting bolt 107 can be tightened to fix the tool cassette 99A at the correct position in the cassette housing recess 101.

To remove the tool cassette 99A from the cassette housing recess 101, the mounting bolt 107 is removed, and the lever 143L of the shaft 143 is operated to move the pressing fixture 137 to the locking groove 129L on the left side of the tool cassette 99A. It is easily done by moving away from.

That is, according to the above configuration, the tool cassette 99A can be accurately attached to the cassette housing recess 101 of the tool holder base 75. Further, the tool cassette 99A can be easily removed from the cassette housing recess 101.

Indexing of each of the tool cassettes 99A, 99B, and 99C attached to a plurality of positions of the tool holder base 75 to the lowermost processing station for processing the work W is performed by the motor 91. This is done by rotating 77.

In order to index each tool cassette 99A, 99B, 99C to the lowermost processing station, dogs 149A to 149C corresponding to each cassette housing recess 101 are attached to the tool holder base 75. Sensors 153A to 153C for detecting the dogs 149A to 149C are attached to the bracket 151 (see FIG. 3) attached to the protruding portion 71 of the Z-axis slider 19.

In order to fix the tool holder base 75 after detecting the desired dogs 149A to 149C by the respective sensors 153A to 153C and indexing the desired tool cassettes 99A to 99C to the lower processing station. In addition, engaging recesses 155A to 155C (see FIG. 4) are provided on the outer peripheral surface of the tool holder base 75 so as to correspond to the respective cassette storage recesses 101.

A lock lever 159 having a claw portion 157 that can be engaged with and disengaged from each of the engaging recessed portions 155A to 155C is supported by the Z-axis slider 19 so as to be vertically swingable via a pivot 161. There is. In order to swing the lock lever 159 up and down, a fluid pressure cylinder 163 is attached to the other end side of the projecting portion 71 of the Z-axis slider 19, and the fluid pressure cylinder 163 is vertically movable. The tip end portion of the piston rod 163P provided in the above and the tip end portion of the lock lever 159 are pivotally connected via a connecting pin 165.

Therefore, by operating the piston rod 163P of the fluid pressure cylinder 163 in the upward direction and swinging the lock lever 159 in the upward direction in FIG. 4, the claw portion 157 provided on the lock lever 159 is engaged with the engaging concave portion. The tool holder base 75 is in a state of being separated from 155A to 155C and is in a rotatable state.

After appropriately rotating the tool holder base 75 to index the desired tool cassettes 99A to 99C to the lower processing station, the piston rod 163P of the fluid pressure cylinder 163 is operated downward, By swinging the lock lever 159 downward, the claw portion 157 of the lock lever 159 can be engaged with the desired engagement concave portions 155A to 155B, and the tool holder base 75 can be fixed so as not to rotate.

As can be understood from the above-mentioned configuration, a plurality of tool cassettes 99A to 99C mounted on the tool holder base 75 can be indexed and positioned at the processing station, and various tool cassettes 99A to 99C can be mounted. The cutting tools 97A to 97C can perform various types of processing such as V-groove, U-groove, or groove processing on the work W.

As described above, when the desired tool cassette 99A to 99C is indexed to the lower processing station for processing, whether or not the tool cassette is mounted in the cassette storage section 101 indexed to the processing station. A through hole 167 (see FIG. 3) is formed in the bottom portion of each cassette housing portion 101 to detect the above. A sensor 169 is attached to the lower portion of the Z-axis slider 19 at a position corresponding to the through hole 167.

The sensor 169 irradiates the through hole 167 with light, detects the reflected light from the back surface of the tool cassette 99A to 99C mounted in the cassette housing recess 101, and detects the presence or absence of the tool cassette 99A to 99C. It is something to detect.

That is, the sensor 169 can detect the presence / absence of the tool cassettes 99A to 99C with respect to the cassette housing recess 101, and also can detect the attachment / detachment of the tool cassettes 99A to 99C with respect to the cassette housing recess 101. Therefore, when it is detected that the tool cassettes 99A to 99C are attached to or detached from the cassette accommodating recess 101, the Z-axis is used to detect the lower end position of the cutting tool attached to the newly attached tool cassette. It can be detected that the origin correction of the direction is necessary again.

As can be understood from the above description of the embodiment, according to the present embodiment, the tool holder base 75 is equipped with a plurality of tool cassettes 99A to 99C, and each tool cassette 99A to 99C is installed. Since it can be indexed to the processing station and can be cut by the cutting tools 97A to 97C provided in each of the tool cassettes 99A to 99C, it is possible to quickly switch the groove processing and groove processing of various shapes for the work W. I can do it.

Further, during the cutting of the work W, the cutting can be supplied to the processing portion, and after the cutting is finished, the excess cutting fluid can be sucked and removed. It is possible to prevent dripping.

It should be noted that the present invention is not limited to the above embodiment, and can be implemented in other modes. That is, in the above-described embodiment, the mode in which a plurality of tool cassettes are mounted on the tool holder base has been described, but it is also possible to adopt a configuration in which one tool cassette is detachably replaced. In this case, since only one cassette housing recess is required, the tool holder base in the above embodiment may be omitted and the cassette housing recess may be formed directly on the Z axis slider.

[0062]

[Effect of the device]

 As will be understood from the above description of the embodiment, according to the present invention, the tool cassette can be accurately positioned and attached to the cassette housing recess easily.

[Brief description of drawings]

FIG. 1 is a front view of an apparatus according to the present invention with a part omitted.

FIG. 2 is a side sectional view of the device according to the present invention.

FIG. 3 is an enlarged cross-sectional view taken along the line III-III in FIG.

FIG. 4 is a front view of a main part corresponding to the drawing of FIG. 3 viewed from the left side.

5 is an enlarged front view of the main part of FIG.

6 is an enlarged cross-sectional view taken along line VI-VI in FIG.

[Explanation of symbols]

 17 X-axis slider 19 Z-axis slider 75 Tool holder base 97A to 97C Cutting tool 101 Cassette storage recess 99A to 99C Tool cassette 127A, 127B Abutment surface 137 Press fixture

Claims (1)

[Scope of utility model registration request] 1. A groove machining device for machining a groove on an upper surface of a work (W) fixed on a work table (11), which is laterally arranged on a frame (7) at a position above the work table (11). The X-axis slider (17) movably supported is provided with the Z-axis slider (19) so as to be vertically movable, and the tool holder base (75) supported by the Z-axis slider (19) is provided. A tool cassette (99A to 99C) equipped with a cutting tool (97A to 97C) is detachably mounted in the cassette housing recess (101), and the above-mentioned two restriction surfaces of the cassette housing recess (101) are provided. A groove processing apparatus, characterized in that a pressing tool (137) for pressing and fixing two contact surfaces of a tool cassette (99A to 99C) is provided in the cassette housing recess (101).