Index Table

Abstract

The goal is to make even large index tables maintainable. [Solution] An indexing table 10 is mounted on an indexing machine 1 having a floor plate 82 and a top plate 81, and comprises a base plate 27 rotatably positioned above the floor plate, an upper shaft 60 rotatably supported below the top plate, and a pair of angle brackets 22 that are detachably attached to the base plate and the upper shaft, with the lower part connected to the base plate and the upper part connected to the upper shaft, and are erected on the edge of the base plate. The operator can maintain the indexing table.

Description

Technical Field

[0001] The present invention relates to an index table.

Background Art

[0002] An indexing machine having an index table with a plurality of indexing positions is known (for example, Japanese Patent Application Laid-Open No. 2024-021199).

Summary of the Invention

Problems to be Solved by the Invention

[0003] When the index table becomes large, maintenance is difficult. The present invention provides an index table that can be maintained even if the index table is large.

Means for Solving the Problems

[0004] A first aspect of the present invention is an index table mounted on an indexing machine having a floor plate and a top plate, a base plate rotatably disposed above the floor plate, an upper shaft rotatably supported below the top plate, a pair of scales having a lower part connected to the base plate and an upper part connected to the upper shaft, and standing on an edge of the base plate, the scales being detachable from the base plate and the upper shaft, and having an index table.

[0005] The indexing machine is, for example, a machining center or a cleaning machine. The indexing machine may include processing equipment positioned at locations corresponding to the indexing positions on the indexing table. The processing equipment is a machining center or a cleaning device. The machining equipment includes a deburring device. The machining equipment is, for example, a horizontal machining center or a robot with a spindle. The cleaning device may perform deburring using a high-pressure jet. The indexing machine performs machining and cleaning on the workpiece placed on the indexing table.

[0006] The base plate may be supported by the floorboard via a first bearing. The first bearing may be positioned above the floorboard. Preferably, the first bearing can be attached to and detached from the floorboard from above. Preferably, the base plate can be attached to and detached from the first bearing from above.

[0007] The angle bracket may have a mounting bottom surface that abuts against the base plate, a workpiece mounting surface that extends vertically, and a connecting portion that connects to the upper frame. The mounting bottom surface connects to the top surface of the base plate. The mounting bottom surface is positioned on the base plate. The mounting bottom surface is fastened to the base plate in a precise position by pins or keys. The coupling absorbs the deviation between the output shaft and the first intermediate shaft. An example of such a coupling is a servo coupling.

[0008] The first intermediate shaft is connected to the second intermediate shaft. The first intermediate shaft may be fastened to the second intermediate shaft with a fastener. The fastener may be, for example, a friction ring or a key. The second intermediate shaft connects to the driven shaft. The second intermediate shaft is fastened to the driven shaft with fasteners. Auxiliary fasteners may be used to fasten the second intermediate shaft to the driven shaft. The fasteners are, for example, bolts. The auxiliary fasteners are, for example, keys and pins.

[0009] Clamping devices include, for example, fluid-type torque clamps and fluid-type swing clamps. The inspection door is, for example, a single-leaf door. Preferably, the inspection door allows workers to enter and exit. The swivel shaft has a rotating channel connected to the upper end face of the upper shaft. The upper shaft may have an internal channel connected to the rotating channel at its upper end and opening at the lower end of the upper shaft. The upper shaft extends along the central axis. The upper shaft may be supported by the top plate via a second bearing. The upper shaft may be movable upward relative to the second bearing. The table drive mechanism is, for example, an indexing device. The indexing device is, for example, a motor, an indexing cam, a reduction gear, or a combination thereof. The motor is, for example, a servo motor or a synchronous motor. [Effects of the Invention]

[0010] According to the present invention, even large index tables can be maintained. [Brief explanation of the drawing]

[0011] [Figure 1] Cross-sectional view of the indexing machine according to the first embodiment. [Figure 2] Perspective view of the index table of the first embodiment [Figure 3] Front view of the index machine according to the first embodiment. [Figure 4] Sectional view of line IV-IV in Figure 1 [Figure 5] Exploded perspective view of the index table of the first embodiment [Figure 6] Partial cross-sectional view of the index table of the second embodiment [Modes for carrying out the invention]

[0012] <First Embodiment> As shown in Figure 1, the indexing machine 1 includes an indexing table 10, a processing unit 70, and a processing chamber 80. Figure 1 is a cross-sectional view of Figure 3 II. For convenience, a portion of the outer partition 85 has been omitted in Figure 1.

[0013] As shown in FIGS. 1, 3, and 4, the processing chamber 80 has a top plate 81, a floor plate 82, side walls 83, an outer partition 85, a shutter device 86, a loading / unloading chamber 94, a first chamber 91, a second chamber 92, and a third chamber 93. The processing chamber 80 is prismatic. For convenience, the lower side in FIG. 1 is referred to as the front. A central axis 5 is disposed at the center of the processing chamber 80. The central axis 5 extends in the vertical direction. For convenience, the radial direction with respect to the central axis 5 is referred to as the radial direction. The top plate 81 has a boss 81b and a bracket 69. The boss 81b is hollow cylindrical and is disposed along the central axis 5. The boss 81b penetrates the top plate 81. The bracket 69 is disposed on the upper surface of the top plate 81. The floor plate 82 has a boss 82a. The boss 82a is hollow cylindrical and is disposed along the central axis 5. The boss 82a penetrates the floor plate 82. The side wall 83 has a loading / unloading port 84. The loading / unloading port 84 is disposed on the front of the side wall 83.

[0014] The outer partition 85 is plate-shaped and extends from the four corners of the inner wall of the side wall 83 toward the central axis 5. The four outer partitions 85 divide the inside of the processing chamber 80 into a loading / unloading chamber 94, a first chamber 91, a second chamber 92, and a third chamber 93. An opening 85b is formed at the center of the four outer partitions 85. A box 21 is disposed in the opening 85b. A gap 85a is provided between the opening 85b and the index table 10.

[0015] The shutter device 86 opens and closes the gap 85a. The shutter device 86 has a shutter 86a and a drive device (not shown). The drive device reciprocates the shutter 86a in the radial direction. When the four shutters 86a close the gap 85a in the state where the index table 10 is indexed, the first chamber 91, the second chamber 92, and the third chamber 93 are separated from each other. The box 21 rotates counterclockwise by 90 degrees each time.

[0016] The processing device 70 is installed in each of the first chamber 91, the second chamber 92, and the third chamber 93. The processing device 70 is, for example, a processing device, a cleaning device, or a drying device.

[0017] As shown in FIGS. 1 to 5, the index table 10 has a box 21, an internal partition 28, a servo motor (table drive motor) 40, a connecting shaft 50, a swivel joint 65, a first bearing 71, a second bearing 72, and a rotation support portion 73.

[0018] The servo motor 40 has an output shaft 42. The servo motor 40 is disposed below the floor plate 82 and fixed to the boss 82a. The output shaft 42 extends along the central axis 5.

[0019] The box 21 is in the shape of a hollow regular polygonal column (a regular square column in FIG. 2). The box 21 has a base plate 27, a pair of side plates 22, a top cover 26, an upper shaft 60, an upper frame 29, a clamping device 30, a seating detection nozzle 31, a fluid pressure circuit 36, and an inclined surface 21a (see FIG. 1). The inclined surface 21a is disposed at a corner of a side surface of the box 21 and extends in the vertical direction.

[0020] The base plate 27 is square. The base plate 27 has a driven shaft 27b. The driven shaft 27b is cylindrical. The driven shaft 27b is a hollow shaft that extends along the central axis 5. The driven shaft 27b is supported by the boss 82a via the first bearing 71.

[0021] As shown in FIG. 4, the side plate 22 has a mounting lower surface 23, a work installation surface 24, a connecting portion 24a, and ribs 25. The side plates 22 are disposed on each side surface of the base plate 27. The mounting lower surface 23 is fastened to the work installation surface 24. The mounting lower surface 23 and the work installation surface 24 are perpendicular. The ribs 25 connect the mounting lower surface 23 and the work installation surface 24. The mounting lower surface 23 extends in the horizontal direction. The mounting lower surface 23 is connected to the upper surface of an edge portion of the base plate 27. The work installation surface 24 rises from an edge portion of the mounting lower surface 23. The mounting lower surface 23 is positioned accurately by pins or keys (not shown) and fastened to the base plate 27. The workpiece mounting surface 24 is rectangular in shape. The workpiece mounting surface 24 is each side of the box 21 and extends vertically. The workpiece mounting surface 24 has a connecting portion 24a, an opening 24b (see Figure 2), and an inspection door 24c (see Figure 2). The connecting portion 24a is positioned above the workpiece mounting surface 24. For example, the connecting portion 24a is positioned inside the box 21. The inspection door 24c is positioned in the opening 24b so as to be openable and closable. The opening 24b is large enough for a worker to enter and exit.

[0022] The upper shaft 60 has a shaft body 61 and a connecting plate 62. The shaft body 61 extends along the central axis 5 and passes through the boss 81b. The shaft body 61 is supported by the boss 81b via a second bearing 72. The connecting plate 62 is positioned in the middle of the outer surface of the shaft body 61 in the vertical direction. The connecting plate 62 is square and extends horizontally.

[0023] The upper frame 29 extends radially and connects the shaft body 61 and the connecting portion 24a. The upper frame 29 has a beam with a rectangular cross-section that is elongated vertically.

[0024] The top cover 26 is shaped like a truncated square pyramid. The top cover 26 is made of thin plates. The top cover 26 covers the space between the connecting plate 62 and the workpiece mounting surface 24. The top cover 26 is divided by dividing lines 7 that extend radially when viewed from above. The dividing lines 7 extend from the upper axis 60 to both ends of the upper end of the workpiece mounting surface 24. The top cover 26 is divided into four faceplates 26a. Each faceplate 26a connects the connecting plate 62 to the upper end of the workpiece mounting surface 24. Each faceplate 26a can be attached to and detached independently from the box 21.

[0025] The internal partition 28 extends radially outward from the inclined surface 21a. As shown in Figure 1, the internal partition 28 is T-shaped when viewed from above. The internal partition 28 is connected to the inclined surface 21a. As shown in Figure 4, the lower end of the internal partition 28 is below the lower surface of the base plate 27.

[0026] As shown in Figure 4, the rotating support section 73 includes a rolling rail 74 and a support roller 75. The rolling rail 74 is fixed to the lower surface of the plate body 27a. The rolling rail 74 is annular in shape. The support roller 75 comprises a support member 76 and a roller 77. The support member 76 rises from the upper surface of the floor plate 82. The roller 77 is rotatably supported on the upper part of the support member 76. The roller 77 supports the lower surface of the rolling rail 74. The roller 77 rolls tangentially to the rolling rail 74.

[0027] The connecting shaft 50 includes a first intermediate shaft 51, a second intermediate shaft 52, a coupling 53, and a friction-type fastening ring 54 (fastener). The connecting shaft 50 may also have a cover 55. The first intermediate shaft 51, the second intermediate shaft 52, and the coupling 53 are arranged along the central shaft 5.

[0028] The first intermediate shaft 51 is positioned above the output shaft 42. The first intermediate shaft 51 is solid. The coupling 53 is cylindrical. The coupling 53 is, for example, a servo coupling. The coupling 53 connects the output shaft 42 and the first intermediate shaft 51.

[0029] The second intermediate shaft 52 connects the first intermediate shaft 51 and the base plate 27. The second intermediate shaft 52 is hollow. The second intermediate shaft 52 has an input shaft portion 56 and an output shaft portion 57. The input shaft portion 56 and the output shaft portion 57 are hollow. The input shaft portion 56 is located radially inward from the output shaft portion 57. The input shaft portion 56 is a disc-shaped hollow shaft. The length of the input shaft portion 56 is shorter than its diameter. The inner surface 56z of the input shaft portion 56 is a stepped hole. The upper part of the first intermediate shaft 51 is inserted into the inner surface 56z. A friction-type fastening ring 54 fastens the inner surface 56z and the first intermediate shaft 51. The friction-type fastening ring 54 may have a centering function. The output shaft portion 57 extends downward along the outer circumference of the input shaft portion 56. The output shaft portion 57 is cylindrical. The output shaft portion 57 has a flange 57a and a contact portion 57b. The flange 57a protrudes outward along the outer circumference of the vertical middle portion of the output shaft portion 57. The contact portion 57b is the lower end of the output shaft portion 57. The contact portion 57b is located below the flange 57a. The contact portion 57b is inserted into the driven shaft 27b. The outer surface of the contact portion 57b faces the inner surface of the driven shaft 27b. The flange 57a is fastened to the upper surface of the base plate 27 by bolts (fasteners) 57c. A key 57d may be inserted between the flange 57b and the base plate 27.

[0030] The swivel joint 65 is positioned along the central axis 5. The swivel joint 65 comprises a swivel shaft 66 and a swivel housing 67. The swivel housing 67 is hollow and fixed to a bracket 69. The swivel shaft 66 is cylindrical with respect to the central axis 5. The swivel shaft 66 is rotatably supported inside the swivel housing 67. The lower end of the swivel shaft 66 is connected to the upper end of the shaft body 61.

[0031] The clamping device 30 is positioned on the workpiece mounting surface 24. The clamping device 30 is, for example, a fluid-type swing clamp. The clamping device 30 has a clamping arm 32. The seating detection nozzle 31 is positioned on the workpiece mounting surface 24.

[0032] The fluid pressure circuit 36 ​​includes a fluid source 36a, a fixed-side flow path 36b, an annular flow path 36c, a rotating-side flow path 36d, an in-shaft flow path 36e, and a clamp pipe 36f. The flow paths 36b to 36e and the clamp pipe 36f each have components for clamping, unclamping, and seating detection nozzles. The fluid source 36a is, for example, a compressor. The fluid source 36a is installed outside the processing chamber 80. The fixed-side flow path 36b is located in the swivel housing 67 and connects the fluid source 36a and the annular flow path 36c. The annular channel 36c is formed between the outer surface of the swivel shaft 66 and the inner surface of the swivel housing 67. The rotating channel 36d is formed on the swivel shaft 66. The rotating channel 36d connects the lower end of the swivel shaft 66 to the annular channel 36c. The internal shaft channel 36e extends parallel to the central shaft 5 and passes through the shaft body 61. The upper end of the internal shaft channel 36e is connected to the rotating side channel 36d. The lower end of the internal shaft channel 36e is connected to one end of the clamp pipe 36f. The other end of the clamp pipe p6 is connected to the clamp device 30 or the seating detection nozzle 31.

[0033] The operation of the indexing machine 1 is described below. Workpiece 3 is brought in through the loading / unloading entrance 84 and placed in the indexing box 22. The clamping device 30 secures workpiece 3. The servo motor 40 rotates the box 21 in 90-degree increments, locating the workpiece mounting surface 24 in the order of the first chamber 91, second chamber 92, third chamber 93, and loading / unloading chamber 94. The shutter device 86 closes, sealing the space between the outer partition 85 and the inner partition 28. Workpiece 3 is processed in the first chamber 91, second chamber 92, and third chamber 93, respectively. Workpiece 3 returns to the loading / unloading chamber 94. Then, the clamping device 30 unclams workpiece 3, and it is loaded out through the loading / unloading entrance 84.

[0034] According to the indexing machine 1 of this embodiment, the box 21 can be disassembled into parts through the opening 85b. The top cover 26 and the inner partition 28 can be attached and detached from the outside of the box 21. The operator opens the inspection door 24c and enters the inside of the box 21. The connecting shaft 50 can be attached and detached inside the box 21, and the angle bracket 22 can be attached and detached from the base plate 27. The upper shaft 60 and the clamp piping 36f can be attached and detached inside the box 21. The top cover 26 and the pair of angle brackets 22 can be attached and detached from the base plate 27 as a single unit. The indexing table 10 can be maintained because its parts can be attached and detached. The components of the box 21 can be taken in and out through the loading / unloading entrance 84, and can be assembled and disassembled.

[0035] <Second Embodiment> As shown in Figure 6, the index table 100 of this embodiment has a base plate 127 and a connecting shaft 150. Figure 6 is a cross-sectional view of a part of the index table 100 through a plane passing through the central axis 5. The connecting shaft 150 has a third intermediate shaft 58, a friction-type fastening ring 54, a coupling 59, and a cover 55. Other forms of the index table 100 are substantially identical to the index table 10 of the first embodiment.

[0036] The base plate 127 has a driven shaft 127b.

[0037] The third intermediate shaft 58 has an input shaft portion 156, an output shaft portion 157, and a connecting ring 58a. The input shaft portion 156 and the output shaft portion 157 are cylindrical and extend along the central axis 5. The connecting ring 58a is a hollow disc. The inner circumference of the connecting ring 58a is connected to the upper end of the input shaft portion 156. The outer circumference of the connecting ring 58a is connected to the upper end of the output shaft portion 157. The lower end of the input shaft portion 156 may be located below the lower end of the output shaft portion 157.

[0038] The coupling 59 is hollow and cylindrical. The coupling 59 connects the input shaft 156 and the dependent shaft 127b. The coupling 59 may be omitted.

[0039] The present invention is not limited to the embodiments described above, and various modifications are possible without departing from the spirit of the invention. All technical matters included in the technical concept described in the claims are covered by the present invention. The embodiments described above are preferred examples, but those skilled in the art can realize various alternatives, modifications, variations, or improvements from the contents disclosed herein, and these are included in the technical scope described in the appended claims. [Explanation of Symbols]

[0040] 1. Indexing Machine 10,100 Index Tables 22 Iker 27,127 base plates 60 Upper shaft

Claims

1. An indexing table to be mounted on an indexing machine having a floor plate and a top plate, A base plate rotatably positioned above the floor plate, An upper shaft rotatably supported below the aforementioned top plate, A set of angle brackets, the lower part of which is connected to the base plate and the upper part of which is connected to the upper shaft, which are erected on the edge of the base plate, and the angle brackets are detachable from the base plate and the upper shaft, An index table that includes the following features.

2. It comprises an upper frame connecting the upper shaft and the angle bracket, The index table according to claim 1.

3. It includes a top cover that covers the space between the upper shaft and the angle, The index table according to claim 1 or 2.

4. The top cover is separable by dividing lines extending from the upper shaft to both ends of the upper end of each angle. The index table according to claim 3.

5. The base plate rotates around a central axis extending vertically and has a hollow driven shaft extending along the central axis. The aforementioned index table further, A table drive unit having an output shaft extending upward along the central axis and positioned below the floor plate, A connecting shaft is attached to the driven shaft from above and connects the driven shaft and the output shaft, The index table according to claim 1.

6. The aforementioned connecting shaft is A coupling positioned above the output shaft and fastened to the output shaft, A solid first intermediate shaft is positioned above the coupling and connected to the coupling, A hollow second intermediate shaft positioned above the aforementioned driven shaft, The first intermediate shaft is inserted into and fastened to a hollow input shaft portion, A hollow output shaft portion fastened to the driven shaft, A second intermediate shaft having, The index table according to claim 5.

7. A swivel joint positioned along the central axis and above the top plate, A swivel shaft connected to the aforementioned upper shaft, A swivel housing that rotatably supports the swivel shaft and is fixed to the top plate, A swivel connector having, A clamping device arranged on the aforementioned quartz, The system includes clamp piping that connects the clamping device and the upper shaft and is located inside the index table, The index table according to claim 5.

8. A rolling rail is positioned on the lower surface of the base plate and extends along a circle centered on the central axis, The floor plate is positioned on the upper surface of the floor plate, and a support roller is provided which rolls in the tangential direction of the circle and supports the rolling rail from below. The index table according to claim 5, 6, or 7.

9. The aforementioned fixture has an inspection door. The index table according to claim 1, 2, 5, 6, or 7.

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