A Compact Clamping and Indexing Detection Integrated Mechanism

Abstract

The present invention discloses a compact clamping and indexing detection integrated mechanism, which includes an inner housing, an outer housing, a gear disc group, a transition body, a clamping disc, a clamping release unit and a detection unit. The transition body is sleeved outside the inner housing, the clamping disc is rotatably sleeved on the lower part of the transition body, the outer housing is sleeved outside the transition body, the gear disc group includes an upper gear disc and a lower gear disc that are engaged with each other, the inner housing is connected to the lower gear disc, and the outer housing is connected to the upper gear disc. It has a compact structure and a reasonable layout, effectively reducing the external dimensions and weight of the milling head.

Description

Technical Field

[0001] The present invention belongs to the accessory components of a milling head, and particularly relates to a compact clamping and indexing detection integrated mechanism. Background Art

[0002] With the development of high-speed and highly automated machining technologies, the accessory milling head, as a core accessory of a machine tool, has increasingly higher requirements for its functions and automation levels. The milling head generally consists of multiple housings at different angles, and the housings are connected by a mechanism and can rotate along the joint surface to achieve machining in different directions. In the structural design of the milling head, there are usually an automatic clamping mechanism and an angle detection mechanism after the housing rotates in place, which are the key structures for realizing an automatic indexing milling head. This structure should not only have reliable clamping but also be compact in structure and reduce weight.

[0003] Currently, for the vast majority of accessory milling heads with clamping (hydraulic relaxation, disc spring clamping) and position detection functions, the position detection unit and the clamping unit are separately arranged and not integrated into one body, which makes the overall structure loose; the clamping unit is generally arranged on the transmission shaft, and this arrangement method will increase the length of the transmission shaft, resulting in an increase in the overall axial dimension of the accessory milling head, a decrease in the stiffness of the shaft, and an increase in the weight of the accessory milling head. Moreover, the only way to increase the clamping force is to increase the size, and the method is single.

[0004] When the weight of the accessory milling head increases, under the condition of realizing the same machining content, it will increase the load of the main machine, reduce the effective machining stroke, and further affect the machining accuracy and efficiency. Summary of the Invention

[0005] In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides a compact clamping and indexing detection integrated mechanism, which has a compact structure and reasonable layout, and effectively reduces the external dimension and weight of the milling head.

[0006] To achieve the above object, the present invention adopts the following technical solutions: A compact clamping and indexing detection integrated mechanism includes an inner housing, an outer housing, a set of gear disks, a transition body, a clamping disk, a clamping and releasing unit, and a detection unit. The inner housing is sleeved with the transition body, the clamping disk is sleeved on the lower part of the transition body, the outer housing is sleeved outside the transition body, the set of gear disks includes an upper gear disk and a lower gear disk that are engaged with each other, the inner housing is connected to the lower gear disk, the outer housing is connected to the upper gear disk, a plurality of clamping and releasing units are provided, and the plurality of clamping and releasing units are symmetrically or evenly arranged in the outer housing. The detection unit is arranged in the outer housing, and a plurality of teeth are provided outside the clamping disk, and the teeth of the clamping disk are engaged with the input end of the detection unit.

[0007] In the above technical solution, the loosening and clamping unit includes an end cover, a pull rod, a bushing, a piston, a locking nut, and an elastic member. The end cover is connected to the outer housing. An oil inlet is provided on the top surface of the end cover. A piston is provided inside the end cover. One end of the pull rod is inserted into the piston, and a locking nut is provided at this end. A bushing is provided outside the other end of the pull rod. An elastic member is sleeved outside the middle of the pull rod. A pull rod groove for accommodating a clamping disc is provided at the lower part of the pull rod in the bushing.

[0008] In the above technical solution, the elastic member is a disc spring.

[0009] In the above technical solution, the oil inlet is connected to a pipe joint.

[0010] In the above technical solution, adjusting pads are installed at the connections between the pull rod and the piston and the bushing.

[0011] In the above technical solution, an inner groove is provided on the surface of the bushing in contact with the pull rod, and an outer groove is provided on the surface of the bushing in contact with the outer housing. A pull rod guide screw is provided on the pull rod at the inner groove, and a bushing guide screw is provided on the bushing at the outer groove.

[0012] In the above technical solution, the detection unit includes a flange, an encoder, a gear shaft, bearings, an adjusting sleeve, and a bushing. The flange is installed inside the outer housing. The encoder is connected to the flange. The rotating shaft of the encoder is connected to the gear shaft. After the gear shaft passes through the flange, the teeth of the gear shaft mesh with the clamping disc. Two bearings are provided between the gear shaft and the inner wall of the flange. A bushing is provided outside the gear shaft between the two bearings. An adjusting sleeve is provided between the gear shaft and the flange.

[0013] In the above technical solution, the rotating shaft of the encoder is connected to the gear shaft through a coupling.

[0014] In the above technical solution, a locking nut for pressing the bearings is provided on the gear shaft.

[0015] In the above technical solution, the bearings are deep groove ball bearings.

[0016] The beneficial effects of the present invention are: compact structure, reasonable layout, space saving, effectively reducing the external dimensions and weight of the accessory milling head, and improving the machining accuracy and efficiency of the milling head. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a top view structural schematic diagram of the present invention.

[0018] Figure 2 is Figure 1 A - A cross - sectional view in

[0019] Figure 3 It is an enlarged view of the loosening and clamping unit in 2.

[0020] Figure 4 is Figure 2 an enlarged view of the detection unit in

[0021] Wherein: 1. Inner housing, 2. Outer housing, 3. Gear disc group, 31. Upper gear disc, 32. Lower gear disc, 4. Transition body, 5. Clamping disc, 6. Clamping release unit, 61. End cover, 62. Pipe joint, 63. Pull rod, 64. Adjusting pad, 65. Bush, 66. Piston, 67 Locking nut, 68. Disc spring, 69. Pull rod guiding screw, 610. Bush guiding screw, 611. Pull rod groove, 7. Detection unit, 71. Flange, 72. Encoder, 73. Gear shaft, 74. Coupling, 75. Deep groove ball bearing, 76. Adjusting sleeve, 77. Gear shaft sleeve, 78. Locking nut. Specific embodiments

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] As Figure 1 , Figure 2 shown, a compact clamping release and indexing detection integrated mechanism includes an inner housing 1, an outer housing 2, a gear disc group 3, a transition body 4, a clamping disc 5, a clamping release unit 6 and a detection unit 7. The inner housing 1 is externally sleeved with the transition body 4, the clamping disc 5 is sleeved on the lower part of the transition body 4, and the inner housing 1, the transition body 4 and the clamping disc 5 are connected together by screws. The outer housing 2 is sleeved outside the transition body 4. The gear disc group 3 includes an engaged upper gear disc 31 and a lower gear disc 32. The inner housing 1 is connected to the lower gear disc 32, and the outer housing 2 is connected to the upper gear disc 31. A plurality of clamping release units 6 are provided, and the plurality of clamping release units 6 are symmetrically or evenly arranged in the outer housing 2. The detection unit 7 is arranged in the outer housing 2. A plurality of teeth are provided outside the clamping disc, and the teeth of the clamping disc 5 are engaged with the input end of the detection unit 7.

[0024] As Figure 3 shown, the clamping release unit includes an end cover 61, a pull rod 63, a bush 65, a piston 66, a locking nut 67 and an elastic member. The end cover 61 is connected to the outer housing 2. An oil inlet is provided on the top surface of the end cover 61. A piston 66 is provided inside the end cover. One end of the pull rod 63 is inserted into the piston 66, and a locking nut 67 is provided at this end. A bush 65 is provided outside the other end of the pull rod 63. An elastic member is externally sleeved in the middle of the pull rod 63. A pull rod groove 611 for accommodating the clamping disc 5 is provided at the lower part of the pull rod 63 in the bush 65. The upper plane of the pull rod groove 611 is used to push open the inner housing 1 connected to the clamping disc 5 and the transition body 4, and the lower plane of the pull rod groove 611 is used to clamp the inner housing 1 connected to the clamping disc 5 and the transition body 4.

[0025] In the above technical solution, the elastic member is a disc spring 68.

[0026] In the above technical solution, the oil inlet is connected to the pipe joint 62.

[0027] In the above technical solution, an adjusting pad 64 is installed at the connection between the pull rod 63 and the piston 66 and the bushing 65. The adjusting pad 64 can adjust the stroke of the pull rod.

[0028] In the above technical solution, the surface of the bushing 65 in contact with the pull rod 63 is provided with an inner groove, and the surface of the bushing 65 in contact with the outer housing 2 is provided with an outer groove. The pull rod 63 is provided with a pull rod guide screw 69 at the inner groove, and the bushing 65 is provided with a bushing guide screw 610 at the outer groove. The pull rod guide screw 69 guides and prevents the rotation of the pull rod, and the bushing guide screw 610 guides and prevents the rotation of the bushing 65.

[0029] As Figure 4 shown, the detection unit 7 includes a flange 71, an encoder 72, a gear shaft 73, bearings, an adjusting sleeve 76, and a gear shaft sleeve 77. The flange 71 is installed inside the outer housing 2, the encoder 72 is connected to the flange 71, the rotating shaft of the encoder 72 is connected to the gear shaft 73. After the gear shaft 73 passes through the flange 71, the teeth of the gear shaft 73 mesh with the teeth of the clamping disc 5. There are two bearings between the gear shaft 73 and the inner wall of the flange 71. A gear shaft sleeve 77 is arranged outside the gear shaft between the two bearings. An adjusting sleeve 76 is arranged between the gear shaft 73 and the flange 71.

[0030] In the above technical solution, the rotating shaft of the encoder 72 is connected to the gear shaft 73 through a coupling 74.

[0031] In the above technical solution, a locking nut 78 for pressing the bearing is arranged on the gear shaft.

[0032] In the above technical solution, the bearing is a deep groove ball bearing 75.

[0033] When the main machine does not supply oil to the clamping release unit 6, the disc spring 68 applies a pre-tightening force through the locking nut 67 and is in a compressed state, providing a pulling force to the pull rod 63. The pull rod 63 pulls the transition body 4 upward, causing the upper tooth disc 31 to mesh with the lower tooth disc 32. At this time, the inner housing 1 and the outer housing 2 are in a locked state.

[0034] When the main machine supplies oil to the clamping release unit 6, the piston 66 pushes the pull rod 63 to move downward under the action of oil pressure. At the same time, the pull rod 63 drives the transition body 4, the clamping disc 5 and the inner housing 1 to move downward, so that the upper tooth disc 31 is disengaged from the lower tooth disc 32. At this time, the main machine can drive the inner housing 1, the transition body 4, the clamping disc 5 and the gear shaft 73 to rotate. Because the encoder 72 is connected to the gear shaft 73, the encoder 72 can detect the rotation position of the inner housing 1, so as to accurately complete the clamping action of the inner housing 1 and the outer housing 2 subsequently.

[0035] As described above, it is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A compact clamping and indexing detection integrated mechanism, characterized in that: It includes an inner housing, an outer housing, a gear disc set, a transition body, a clamping disc, a clamping release unit and a detection unit. The transition body is sleeved outside the inner housing. The clamping disc is rotatably sleeved on the lower part of the transition body. The outer housing is sleeved outside the transition body. The gear disc set includes an upper gear disc and a lower gear disc that mesh with each other. The inner housing is connected to the lower gear disc, and the outer housing is connected to the upper gear disc. A plurality of clamping release units are provided, and the plurality of clamping release units are symmetrically or evenly arranged in the outer housing. The detection unit is arranged in the outer housing. A plurality of teeth are provided outside the clamping disc, and the teeth of the clamping disc mesh with the input end of the detection unit.

2. The compact clamping and indexing detection integrated mechanism according to claim 1, characterized in that: The clamping release unit includes an end cover, a pull rod, a bushing, a piston, a locking nut, and an elastic member. The end cover is connected to the outer housing. An oil inlet is provided on the top surface of the end cover. A piston is provided inside the end cover. One end of the pull rod is inserted into the piston, and a locking nut is provided at this end. A bushing is provided outside the other end of the pull rod. An elastic member is sleeved outside the middle of the pull rod. A pull rod groove for accommodating the clamping disc is provided at the lower part of the pull rod where it is located outside the bushing.

3. The compact clamping and indexing detection integrated mechanism according to claim 2, characterized in that: The elastic member is a disc spring.

4. The compact clamping and indexing detection integrated mechanism according to claim 2, characterized in that: The oil inlet is connected to a pipe joint.

5. The compact clamping and indexing detection integrated mechanism according to claim 2, wherein: Adjusting pads are installed at the joints of the pull rod with the piston and the bushing.

6. The compact clamping and indexing detection integrated mechanism according to claim 2, characterized in that: An inner groove is provided on the surface of the bushing in contact with the pull rod, and an outer groove is provided on the surface of the bushing in contact with the outer housing. A pull rod guide screw is provided on the pull rod at the inner groove, and a bushing guide screw is provided on the bushing at the outer groove.

7. The compact clamping and indexing detection integrated mechanism according to claim 1, characterized in that: The detection unit includes a flange, an encoder, a gear shaft, bearings, an adjusting sleeve, and a bushing. The flange is installed in the outer housing. The encoder is connected to the flange. The rotating shaft of the encoder is connected to the gear shaft. After the gear shaft passes through the flange, the teeth of the gear shaft mesh with the clamping disc. Two bearings are provided between the gear shaft and the inner wall of the flange. A bushing is provided outside the gear shaft between the two bearings. An adjusting sleeve is provided between the gear shaft and the flange.

8. The compact clamping and indexing detection integrated mechanism according to claim 7, characterized in that: The rotating shaft of the encoder is connected to the gear shaft through a coupling.

9. The compact clamping and indexing detection integrated mechanism according to claim 7, characterized in that: A locking nut for pressing the bearing is provided on the gear shaft.

10. The compact clamping and indexing detection integrated mechanism according to claim 7, characterized in that: The bearing is a deep groove ball bearing.

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