CN220591634U - Cutting device for sprocket machining - Google Patents

Abstract

The utility model discloses a cutting device for sprocket machining, which comprises a base, wherein the bottom of the base is fixedly connected with a plurality of support rods, the surface of the base is provided with a fixing mechanism, the top of the base is provided with a support frame, the surface of the support frame is provided with a cutting mechanism, the bottom of the support frame is provided with a protection mechanism, the inner side of the protection mechanism is provided with a cleaning mechanism, the fixing mechanism comprises a fixing cylinder, and the fixing cylinder penetrates through the base. According to the utility model, the fixing mechanism is arranged, the plurality of abutting blocks can be driven simultaneously by rotating the knob, so that the abutting blocks abut against the inner wall of the hole of the sprocket workpiece to fix the inner wall of the hole, and the outside of the sprocket workpiece can be prevented from being shielded by fixing the hole of the sprocket workpiece, so that the sprocket workpiece can be better cut, and meanwhile, the extending distance of the abutting blocks can be adjusted, so that the sprocket workpieces with different apertures can be fixed.

Description

Cutting device for sprocket machining

Technical Field

The utility model relates to the field of cutting devices, in particular to a cutting device for machining a chain wheel.

Background

The sprocket is a cog sprocket wheel for meshing with precisely pitched blocks on links or cables. The sprocket is widely used in the industries of chemical industry, textile machinery, escalator, wood processing, three-dimensional parking garage, agricultural machinery, food processing, instrument and instrument, petroleum and the like, and the sprocket needs cutting during processing.

The utility model discloses a sprocket cutting device, which comprises a frame, the frame bottom is provided with the base, the base top is provided with first spout, the frame the place ahead is provided with the cylinder, the fixed cutting sword that is provided with in cylinder below, the inboard fixed workstation that is provided with of base, workstation upper surface left end is provided with the slider, slider upper surface fixed is provided with the motor, motor and external power source electric connection, the output of motor is fixed and is provided with the pivot, the pivot lateral wall is fixed and is provided with the flabellum, workstation upper surface fixed is provided with the fixed block, fixed block inboard is fixed and is provided with the swager frame, workstation right side top is fixed and is provided with the iron fillings collection box, the workstation top is close to the slider lower surface has seted up the third spout.

However, the above patent suffers from the following disadvantages:

1. in the above patent, the sprocket is limited by the pressing frame, and the tightness of the fixation of the sprocket is adjusted by the screw, but the pressing frame in the above fixation structure easily prevents the cutting device from cutting the surface of the sprocket, thereby being unfavorable for the use of the device.

2. In the above patent, the motor drives the fan blade to generate high-speed air flow to clean metal scraps generated by cutting the surface of the chain wheel, and the scrap iron collecting box is arranged to collect the metal scraps, but the surface of the workbench is lack of a blocking structure, so that the metal scraps can be scattered everywhere under the driving of the high-speed air flow, and the cleaning of the metal scraps is inconvenient.

Disclosure of Invention

The utility model aims to provide a cutting device for machining a chain wheel, which is provided with a fixing mechanism, a plurality of abutting blocks can be driven simultaneously by rotating a knob, so that the abutting blocks abut against the inner wall of a hole of a chain wheel workpiece to fix the inner wall of the hole, and the outer side of the chain wheel workpiece can be prevented from being shielded by fixing the hole of the chain wheel workpiece, so that the chain wheel workpiece can be better cut, and meanwhile, the extending distance of the abutting blocks can be adjusted, so that the chain wheel workpieces with different apertures can be fixed, and the defects in the technology are overcome.

In order to achieve the above object, the present utility model provides the following technical solutions: the utility model provides a cutting device is used in sprocket processing, includes the base, base bottom fixedly connected with bracing piece, bracing piece quantity is established to a plurality of, the base surface is equipped with fixed establishment, the base top is equipped with the support frame, the support frame surface is equipped with cutting mechanism, the support frame bottom is equipped with protection machanism, the protection machanism inboard is equipped with clearance mechanism.

Preferably, the fixing mechanism comprises a fixing cylinder, the fixing cylinder penetrates through the base, the fixing cylinder is fixedly connected with the base, a placing groove is formed in the outer side of the fixing cylinder, a limiting hole is formed in one side of the placing groove, limiting protrusions are fixedly connected to the inner wall of the limiting hole, a fixing ring is arranged in the base, the bottom of the fixing ring is fixedly connected with the inner wall of the fixing cylinder, a rotating cylinder is arranged in the outer side of the fixing ring in a penetrating manner, the rotating cylinder is rotationally connected with the fixing ring, a driven toothed ring is fixedly connected to the outer side of the rotating cylinder, a threaded rod is connected to the inner side of the rotating cylinder in a threaded manner, a limiting groove is formed in the outer side of the threaded rod, one end of the threaded rod penetrates through the limiting hole, the limiting protrusions are matched with the limiting groove, one end of the threaded rod is fixedly connected with a supporting block, the supporting block is matched with the placing groove, the number of the rotating cylinders is multiple, the rotating cylinders are distributed around the center of the fixing ring, the number of the limiting holes is the same as the number of the rotating cylinders, the rotating cylinders are coaxially distributed, a rotating disc is arranged on the inner side of the fixing cylinder, the rotating disc is rotationally connected with the rotating shaft, a driving toothed disc is fixedly connected to the top of the rotating disc, the rotating shaft is fixedly connected with the rotating shaft, and the rotating shaft is fixedly connected with the bottom of the rotating shaft, and the rotating shaft is fixedly connected with the rotating shaft, and meshed with the rotating shaft, and the rotating shaft is fixedly connected with the bottom to the rotating shaft.

Firstly, the through hole hitch at the center of the sprocket workpiece is arranged at the outer side of the fixed cylinder, then the rotating disk and the driving gear ring are driven to rotate through the rotating knob, meanwhile, the driving gear ring can simultaneously drive a plurality of driven gear rings and the rotating cylinder to rotate, meanwhile, the limiting protrusion limits the limiting groove to enable the threaded rod to be incapable of self-transmission because of threaded connection of the threaded rod and the rotating cylinder, so that the threaded rod can drive the abutting block to extend outwards when the rotating cylinder rotates, the abutting block can abut against the inner wall of a hole of the sprocket workpiece through the plurality of abutting blocks, the sprocket workpiece is fixed, and the outer side of the sprocket workpiece is not affected by the cutting mechanism.

Preferably, the bottom of the support frame is provided with guide rails, the bottom of the guide rails is fixedly connected with the base, the number of the guide rails is two, the two guide rails are symmetrically distributed about the center line of the base, one side of each guide rail is provided with a fixing rod, the bottom of each fixing rod is fixedly connected with the base, the top of each guide rail is slidably provided with a sliding block, two ends of the support frame are respectively fixedly connected with the two sliding blocks, a first electric push rod is arranged between each fixing rod and the support frame, one end of each first electric push rod is fixedly connected with each fixing rod, and the output end of each first electric push rod is in transmission connection with the support frame;

the first electric push rod is started to drive the support frame to slide along the direction of the guide rail, so that the longitudinal position of the cutting mechanism can be adjusted.

Preferably, the cutting mechanism comprises a sliding groove, the sliding groove is arranged in the support frame, a connecting block is slidably arranged in the sliding groove, two ends of the connecting block extend to the outer side of the sliding groove, a second electric push rod is arranged on one side of the connecting block, one end of the second electric push rod is fixedly connected with the support frame, the output end of the second electric push rod is in transmission connection with the connecting block, a third electric push rod penetrates through the middle of the connecting block, the third electric push rod is fixedly connected with the connecting block, a drilling machine is arranged at the output end of the third electric push rod in transmission, and a cutting bit is arranged at the bottom of the drilling machine in transmission;

the connecting block can be driven to slide along the sliding groove by starting the second electric push rod, so that the transverse position of the cutting bit can be adjusted, the drilling machine and the cutting bit can be driven to be adjusted up and down by starting the third electric push rod, and the longitudinal height of the cutting bit can be adjusted.

Preferably, the protection mechanism comprises a fixed plate and a protection plate, wherein a top plate is fixedly connected to one side of the top of the fixed plate, a through groove is formed in the middle of the top plate, a movable groove is formed in the outer side of the through groove, a baffle is arranged in the movable groove, the diameter of the baffle is smaller than that of the movable groove, the baffle is in sliding connection with the movable groove, inserting rods are fixedly connected to the bottom of the protection plate, the number of the inserting rods is multiple, the protection plate is arranged on the outer side of the top plate, inserting grooves are formed in the bottom of the inserting rods, the inserting rods are arranged at the top of the base and are matched with the inserting grooves, and cutting bits penetrate through the baffle and are in sliding connection with the baffle;

above-mentioned guard plate is supported by transparent acrylic board material, can surround sprocket work piece completely through roof, guard plate and fixed plate to can avoid the piece that produces when sprocket work piece cuts to splash, can drive the baffle simultaneously when cutting the drill bit and slide in the movable groove, the baffle can cover throughout the groove all the time simultaneously, thereby avoids the metal piece that the cutting produced to spill through throughout the groove.

Preferably, the cleaning mechanism comprises a blower and a through groove, the blower is arranged on one side of the fixed plate, the through groove is arranged on the surface of the base, a connecting ring is arranged at the bottom of the through groove, the top of the connecting ring is fixedly connected with the base, a collecting cover is in threaded connection with the outer side of the connecting ring, and the top of the collecting cover is in threaded connection with the connecting ring;

the collection cover in the structure is of a ventilated screen structure, high-speed air flow can be generated by starting the blower to clean metal scraps generated by cutting, then the high-speed air flow can be wrapped with the metal scraps and enter the collection cover through the through groove, then the air flow can be discharged through the collection cover, and the metal scraps can be collected in the collection cover.

In the technical scheme, the utility model has the technical effects and advantages that:

1. through setting up fixed establishment, can drive a plurality of support blocks simultaneously through rotatory knob to support the block and support sprocket work piece hole inner wall and fix it through supporting, through fixing sprocket work piece hole like this, can avoid sheltering from the sprocket work piece outside and thereby can be better carry out cutting operation to sprocket work piece, the extension distance that supports the block simultaneously is adjustable, thereby can fix the sprocket work piece of different apertures;

2. through setting up clearance mechanism can clear up and collect the metal clastic that the device cutting produced, cooperation protection machanism can avoid metal clastic to splash everywhere simultaneously to clearance mechanism has improved the effect of collecting metal clastic.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is an exploded view of the protective mechanism of the present utility model;

FIG. 3 is a schematic cross-sectional view of a top plate of the present utility model;

FIG. 4 is a schematic view of a fixing mechanism according to the present utility model;

FIG. 5 is a schematic view of a stationary drum according to the present utility model;

FIG. 6 is an enlarged view of the A non-structure of FIG. 1 in accordance with the present utility model;

fig. 7 is an enlarged view of the B-unstructured of fig. 4 according to the present utility model.

Reference numerals illustrate:

1. a base; 2. a support rod; 3. a fixing mechanism; 31. a fixed cylinder; 32. a placement groove; 33. a limiting hole; 34. a limit protrusion; 35. a fixing ring; 36. a rotating cylinder; 37. a driven toothed ring; 38. a threaded rod; 39. abutting blocks; 310. a rotating disc; 311. a driving toothed ring; 312. a rotating shaft; 313. a knob; 314. a limit groove; 4. a support frame; 5. a cutting mechanism; 51. a chute; 52. a connecting block; 53. a second electric push rod; 54. a third electric push rod; 55. a drilling machine; 56. cutting bits; 6. a protective mechanism; 61. a fixing plate; 62. a protection plate; 63. a top plate; 64. a through groove; 65. a movable groove; 66. a baffle; 67. a rod; 68. a slot; 7. a cleaning mechanism; 71. a blower; 72. a through groove; 73. a connecting ring; 74. a collection cover; 8. a guide rail; 9. a fixed rod; 10. a slide block; 11. the first electric push rod.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides a cutting device for sprocket machining, which is shown in fig. 1-7, and comprises a base 1, wherein the bottom of the base 1 is fixedly connected with a plurality of support rods 2, the surface of the base 1 is provided with a fixing mechanism 3, the top of the base 1 is provided with a support frame 4, the surface of the support frame 4 is provided with a cutting mechanism 5, the bottom of the support frame 4 is provided with a protection mechanism 6, and the inner side of the protection mechanism 6 is provided with a cleaning mechanism 7.

Further, in the above technical scheme, fixed establishment 3 includes fixed section of thick bamboo 31, fixed section of thick bamboo 31 runs through base 1 setting, fixed section of thick bamboo 31 and base 1 fixed connection, standing groove 32 has been seted up in the fixed section of thick bamboo 31 outside, spacing hole 33 has been seted up to standing groove 32 one side, spacing piece 39 is fixedly connected with spacing groove 32 to spacing hole 33 inner wall, the inside solid fixed ring 35 that is equipped with of base 1, gu fixed ring 35 bottom and fixed section of thick bamboo 31 inner wall fixed connection, gu fixed ring 35 outside runs through and is provided with rotary drum 36, rotary drum 36 and solid fixed ring 35 rotate to be connected, rotary drum 36 outside fixedly connected with driven toothed ring 37, rotary drum 36 inboard threaded connection has threaded rod 38, threaded rod 38 outside has seted up spacing groove 314, threaded rod 38 one end runs through spacing hole 33 setting, spacing piece 34 matches with spacing groove 314, threaded rod 38 one end fixedly connected with supporting piece 39 matches with standing groove 32, rotary drum 36 quantity sets up to a plurality of rotary drum 36 bottom and solid fixed ring 35 and solid fixed ring 31, rotary drum 36 and rotary drum 36 rotate fixed ring 311 and rotary drum 36 and rotary drum 3 are connected with fixed ring 310, rotary drum 36 is equipped with fixed ring 310 and fixed connection bottom diameter of the same, rotary drum is equipped with rotary drum 37 and fixed ring 310 and fixed connection.

Further, in the above technical scheme, support frame 4 bottom is equipped with guide rail 8, guide rail 8 bottom and base 1 fixed connection, guide rail 8 quantity is established to two, two guide rail 8 is about base 1 central line symmetric distribution, guide rail 8 one side is equipped with dead lever 9, dead lever 9 bottom and base 1 fixed connection, guide rail 8 top slip is provided with slider 10, support frame 4 both ends respectively with two slider 10 fixed connection, be equipped with first electric putter 11 between dead lever 9 and the support frame 4, first electric putter 11 one end and dead lever 9 fixed connection, first electric putter 11 output is connected with support frame 4 transmission.

Further, in the above technical scheme, the cutting mechanism 5 includes and expands the spout 51, the spout 51 sets up in inside the support frame 4, the inside slip of spout 51 is provided with connecting block 52, connecting block 52 both ends all extend to the spout 51 outside, connecting block 52 one side is equipped with second electric putter 53, second electric putter 53 one end and support frame 4 fixed connection, second electric putter 53 output and connecting block 52 transmission are connected, the connecting block 52 middle part runs through and is provided with third electric putter 54, third electric putter 54 and connecting block 52 fixed connection, third electric putter 54 output transmission is provided with rig 55, rig 55 bottom transmission is provided with cutting bit 56.

Further, in the above technical scheme, the protection mechanism 6 includes fixed plate 61 and guard plate 62, fixed plate 61 top one side fixedly connected with roof 63, the through groove 64 has been seted up at roof 63 middle part, movable groove 65 has been seted up to the through groove 64 outside, the inside baffle 66 that is equipped with of movable groove 65, baffle 66 diameter is less than movable groove 65 diameter, baffle 66 and movable groove 65 sliding connection, guard plate 62 bottom fixedly connected with inserted bar 67, the inserted bar 67 quantity is established to a plurality of, guard plate 62 sets up in the roof 63 outside, inserted bar 67 bottom is provided with slot 68, slot 68 sets up in base 1 top, inserted bar 67 and slot 68 phase-match, cutting bit 56 runs through baffle 66 setting, cutting bit 56 and baffle 66 sliding connection.

Further, in the above technical solution, the cleaning mechanism 7 includes a blower 71 and a through groove 72, the blower 71 is disposed on one side of the fixing plate 61, the through groove 72 is disposed on the surface of the base 1, a connecting ring 73 is disposed at the bottom of the through groove 72, the top of the connecting ring 73 is fixedly connected with the base 1, a collecting cover 74 is screwed on the outer side of the connecting ring 73, and the top of the collecting cover 74 is screwed with the connecting ring 73.

The working principle of the utility model is as follows:

referring to fig. 1-7 of the specification, when the device is used, firstly, a through hole in the center of a sprocket workpiece is sleeved outside a fixed cylinder 31, then a rotary knob 313 can drive a rotary disc 310 and a driving toothed ring 311 to rotate through a rotary shaft 312, meanwhile, the driving toothed ring 311 can simultaneously drive a plurality of driven toothed rings 37 and the rotary cylinder 36 to rotate, meanwhile, because a threaded rod 38 is in threaded connection with the rotary cylinder 36, a limit groove 314 is limited by a limit protrusion 34 so that the threaded rod 38 cannot be self-transmitted, when the rotary cylinder 36 rotates, the threaded rod 38 can drive a supporting block 39 to extend outwards, the supporting block 39 can extend outwards to abut against the inner wall of a hole of the sprocket workpiece through the plurality of supporting blocks 39, thereby fixing the sprocket workpiece, grinding the outside of the sprocket workpiece is not influenced by a cutting mechanism 5, a support frame 4 can be driven to slide along the direction of a guide rail 8 through the starting of a first electric push rod, thus the longitudinal position of the cutting mechanism 5 can be adjusted, a connecting block 52 can be driven to slide along a slide groove 51 through the starting of a second electric push rod 53, thus the transverse position of a drill 56 can be adjusted, the drill bit 56 can be adjusted, and the longitudinal cutting bit 56 can be adjusted by the starting of a third electric push rod 54 and a drilling machine 55 can be driven to adjust the longitudinal drill bit 56;

referring to fig. 1-7 of the drawings, in use, the apparatus is configured to completely enclose a sprocket workpiece by the top plate 63, the guard plate 62 and the fixed plate 61, thereby avoiding splashing of chips generated during cutting of the sprocket workpiece, and simultaneously, the baffle 66 is driven to slide in the movable slot 65 when the cutting bit 56 moves, and the baffle 66 always covers the through slot 64, thereby avoiding leakage of metal chips generated during cutting through the through slot 64, and by starting the blower 71, high-speed airflow can be generated to clean the metal chips generated during cutting, after which the high-speed airflow can be wrapped and clamped into the collecting hood 74 through the through slot 72, after which the airflow can be discharged through the collecting hood 74, and the metal chips can be collected in the collecting hood 74.

Standard parts used in the utility model can be purchased from the market, special-shaped parts can be customized according to the description of the specification and the drawings, the specific connection modes of all parts adopt conventional means such as mature bolts, rivets and welding in the prior art, the machinery, the parts and the equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection modes in the prior art, so that the details are not described.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims (6)

1. Cutting device is used in sprocket processing, including base (1), its characterized in that: the novel multifunctional electric tool comprises a base (1), wherein support rods (2) are fixedly connected to the bottom of the base (1), the number of the support rods (2) is multiple, a fixing mechanism (3) is arranged on the surface of the base (1), a support frame (4) is arranged at the top of the base (1), a cutting mechanism (5) is arranged on the surface of the support frame (4), a protection mechanism (6) is arranged at the bottom of the support frame (4), and a cleaning mechanism (7) is arranged on the inner side of the protection mechanism (6).

2. The sprocket machining cutting apparatus according to claim 1, wherein: the fixing mechanism (3) comprises a fixing cylinder (31), the fixing cylinder (31) penetrates through the base (1) and is fixedly connected with the base (1), a placing groove (32) is formed in the outer side of the fixing cylinder (31), a limit hole (33) is formed in one side of the placing groove (32), a limit protrusion (34) is fixedly connected to the inner wall of the limit hole (33), a fixing ring (35) is arranged in the base (1), the bottom of the fixing ring (35) is fixedly connected with the inner wall of the fixing cylinder (31), a rotating cylinder (36) is arranged on the outer side of the fixing ring (35) in a penetrating manner, the rotating cylinder (36) is connected with the fixing ring (35) in a rotating manner, a driven toothed ring (37) is fixedly connected on the outer side of the rotating cylinder (36), a limit groove (314) is formed in the outer side of the threaded rod (38), one end of the threaded rod (38) penetrates through the limit hole (33) and is provided with a limit protrusion (34), the limit protrusion (34) is matched with the limit groove (314), one end of the threaded rod (38) is matched with the threaded rod (39), the threaded rod (38) is matched with the threaded rod (32) in number, the utility model discloses a fixed ring (35) center distribution is all encircleed to a plurality of rotating cylinder (36), spacing hole (33) quantity is the same with rotating cylinder (36) quantity, spacing hole (33) and rotating cylinder (36) coaxial distribution, fixed cylinder (31) inboard is equipped with rotating disk (310), rotating disk (310) top fixedly connected with initiative ring gear (311), initiative ring gear (311) are connected with driven ring gear (37) meshing, rotation bottom fixedly connected with pivot (312), fixed cylinder (31) setting is run through to pivot (312) bottom, pivot (312) are connected with fixed cylinder (31) rotation, pivot (312) bottom fixedly connected with knob (313).

3. The sprocket machining cutting apparatus according to claim 1, wherein: support frame (4) bottom is equipped with guide rail (8), guide rail (8) bottom and base (1) fixed connection, guide rail (8) quantity is established to two, two guide rail (8) are about base (1) central line symmetric distribution, guide rail (8) one side is equipped with dead lever (9), dead lever (9) bottom and base (1) fixed connection, guide rail (8) top slip is provided with slider (10), support frame (4) both ends respectively with two slider (10) fixed connection, be equipped with first electric putter (11) between dead lever (9) and support frame (4), first electric putter (11) one end and dead lever (9) fixed connection, first electric putter (11) output and support frame (4) transmission are connected.

4. The sprocket machining cutting apparatus according to claim 1, wherein: cutting mechanism (5) package expands spout (51), spout (51) set up inside support frame (4), spout (51) inside slip is provided with connecting block (52), connecting block (52) both ends all extend to spout (51) outside, connecting block (52) one side is equipped with second electric putter (53), second electric putter (53) one end and support frame (4) fixed connection, second electric putter (53) output and connecting block (52) transmission are connected, connecting block (52) middle part runs through and is provided with third electric putter (54), third electric putter (54) and connecting block (52) fixed connection, third electric putter (54) output transmission is provided with rig (55), rig (55) bottom transmission is provided with cutting bit (56).

5. The sprocket machining cutting apparatus according to claim 4, wherein: protection machanism (6) are including fixed plate (61) and guard plate (62), fixed plate (61) top one side fixedly connected with roof (63), run through groove (64) have been seted up at roof (63) middle part, run through groove (64) outside and seted up movable groove (65), inside baffle (66) that are equipped with of movable groove (65), baffle (66) diameter is less than movable groove (65) diameter, baffle (66) and movable groove (65) sliding connection, guard plate (62) bottom fixedly connected with inserted bar (67), inserted bar (67) quantity is established to a plurality of, guard plate (62) set up in roof (63) outside, inserted bar (67) bottom is provided with slot (68), slot (68) set up in base (1) top, inserted bar (67) and slot (68) phase-match, cutting bit (56) run through baffle (66) setting, cutting bit (56) and baffle (66) sliding connection.

6. The sprocket machining cutting apparatus according to claim 1, wherein: the cleaning mechanism (7) comprises a blower (71) and a through groove (72), the blower (71) is arranged on one side of the fixed plate (61), the through groove (72) is arranged on the surface of the base (1), a connecting ring (73) is arranged at the bottom of the through groove (72), the top of the connecting ring (73) is fixedly connected with the base (1), a collecting cover (74) is connected with the outer side of the connecting ring (73) in a threaded manner, and the top of the collecting cover (74) is connected with the connecting ring (73) in a threaded manner.