Apparatus for testing shafts at manufacturing stage

FIELD: testing equipment.

SUBSTANCE: apparatus has casing, loading drive mounted on casing, and commander device. Apparatus is further equipped with toothed gear including toothed wheel having section positioned at its crown and made in the form longitudinal slot, at 1/n length of circle of toothed crown. Toothed wheel is adapted for engagement with n number of gears rigidly connected with active grips. Active grips are positioned on bearing units of disk which is located for free rotation in conjunction with toothed wheel, parts to be tested and disk with passive grips immovably fixed thereon through predetermined angle by means of main motor-reducer with the help of electromagnetic coupling. The latter is controlled by means of measuring-commanding device which upon aligning of longitudinal slot provided on toothed wheel with precision reversing motor-reducer switches-on drive for meshing with cam, by means of which cam area of hysteresis loop is measured.

EFFECT: wider operational capabilities and improved quality of controlling of parts.

5 dwg

 

The present invention relates to the field testing of parts like shaft in torsion under cyclic loading and can be used to determine the resource details in various engineering industries. Primarily the invention can be used for testing parts like shaft at the production stage under cyclic loading.

A device for testing parts, comprising a load device, a measuring apparatus, fixing device for fixing the tested products (see A.S. No. 493691 MKI G 01 m 15/00).

For reasons that impede the achievement of specified following technical result when using the known device is that in the known device the lack of technological capability testing. You can test only one sample and it is impossible to determine resource details from the same batch of castings.

It is also known device for fatigue testing of components in a rotating rotors (see A.S. No. 378747 MKI G 01 m 15/00).

For reasons that impede the achievement of specified following technical result when using the known device is that in the known device is destroyed test item.

These disadvantages of these alternatives is due to the inability to control vnutrennostej details to identify the beginning of the emergence of micro-cracks and their growth rate.

The closest device to the same destination to the claimed invention on the totality of symptoms is the device control parameters of the braking sleeve road bike (see A.S. SU # 1652837).

A disadvantage of the known device, taken as a prototype, is the inability to determine the internal state of the material under the application of load, and the impossibility of testing multiple samples.

The technical result - the expansion of technological capabilities and improving the quality inspection of parts during the manufacturing process due to the installation of gearing including a gear wheel having on the crown of the sector in the form of a longitudinal groove on 1/n of the circumference of the ring gear, which engages with the n-th number of gears rigidly connected with the active grippers mounted on the bearing assemblies of the disk, which freely rotates together with the gear wheel, examinees details and disk fixedly mounted thereon passive grabs at a certain angle after a block of alternating cycles of loading the main a gear motor through an electromagnetic clutch driven measuring and command equipment, which when combined longitudinal groove gear is precision motor-reducer includes an actuator input engages the Cam, by which is measured the area of the hysteresis loop.

Built-in Autonomous power allows you to perform transport operations.

Figure 1 schematically shows a General view of the device; figure 2 - a section a-a of Fig 1; figure 3 - section b-2 (the location of the passive grabs); figure 4 - remote item 2, figure 5 - toothed wheel.

The device for test shafts at the production stage includes a housing 1, n the number of active grippers 2 and n+1 passive grabs 3 rigidly mounted on the disk 4, one of them is made with grooves for connection with electromagnetic latches 5, fixed to the body, which has a bearing support 6, to which the shaft 7 rigidly connected with the disc 8 mounted on the bearings 9 movably mounted gears 10, performed with the opportunity to engage with the toothed wheel 11, having on the ring gear sector in the form of a longitudinal groove, through which the electromagnetic the clutch 12 is connected with the main motor gear 13 mounted on the vertical shelves 14, which has a precision reverse the motor gear 15, the input device engages the Cam 16, made in a spiral of Archimedes with the measuring active grip 17, which is connected with the measuring-command equipment 18 and energoakkumulyatorami 19, the supply of traction the motors 20 in transport mode, the casing 21 of the wheel 22 serves for protection and transportation of parts 23.

The device operates as follows. When positioning the machine, producing a "finishing" operation machining parts (shafts)through the connector electrical current is applied to the main motor-reducer 13 and the additional precision reverse the motor to the gear 15, and a rectifier device, installed in the measuring-command equipment 18. Thus the automatic charging of batteries 19. After loading occurs simultaneously clamping of parts in the active capture 2, passive capture 3 is rotating disks 4 and 8 main motor gear 13 in the first position by an angle equal to 360/n, and attaching the electromagnetic clamps 5 disc 4 relative to the housing 1, in the second position, the electromagnetic clutch 12 through the gear wheel 11 and the active capture 2 item unit is loaded with alternating cycles of loading at certain frequency and amplitude.

When you download the following parts main motor-reducer 13 is turned off and fixing the following details. Main motor-reducer 13 in the first position, the electromagnetic clutch 12 performs a rotation by an angle equal to 360/n, and the second position - alternating loading of the parts to the full load of the cumulative system. In the can, test directly the n-th number of parts.

Control the quality of parts subjected to alternating loading, is precision reverse the motor gear 15 with the input device engages the Cam 16 at the upper position of the disks 4 and 8. In this case, the gear wheel 11 is not in contact with the measuring active capture of 17 from the free sector.

Manual loading and unloading of the test items 23 through the Cam 16, which provides a linear dependence of the deformation (loading - razrusheniya) parts on the applied torque, which describe the dynamic hysteresis loop, the area of which is fixed measuring and command equipment 18.

Comparing with the reference square loop hysteresis, tested in detail further processed by one of the envisaged technological schemes (thermal, magnetic, sandblasting) or discarded.

The device for test shafts at the stage of manufacture, comprising a housing mounted on its drive loading and command apparatus, characterized in that it is provided with a toothed gearing including a gear wheel having on the crown of the sector in the form of a longitudinal groove on 1/n of the circumference of the ring gear is made with the possibility of entering into engagement with n-m if what estom gears, rigidly connected with the active grippers mounted on the bearing assemblies of the disk, which freely rotates together with the gear wheel, examinees details and disk fixedly mounted thereon passive grabs at a certain angle main a gear motor through an electromagnetic clutch that is controlled measuring and command equipment, which when combined longitudinal groove gears with precision reverse a gear motor includes a drive input to the engagement of the Cam with which measured the area of the hysteresis loop.



 

Same patents:

FIELD: testing engineering.

SUBSTANCE: specimens for simulating worm turn are made of rotation body whose axial profile of the active surface is in coincidence with normal profile of the turn and outer diameter is equal to the diameter of the worm, and specimens for simulating tooth of the worm wheel are made of the worm wheel tooth whose dividing diameter is equal to that of the worm to be simulated. The specimen simulating the worm turn is made of the turn of the worm whose rise angle is equal to that of the turn worm to be simulated. The specimen simulating the tooth of the worm wheel is made of the tooth of the worm wheel with sloping angle of the worm wheel equal to the rise angle of the worm turn.

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2 dwg

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8 dwg

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2 dwg

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1 dwg

FIELD: testing engineering.

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The invention relates to a testing technique

FIELD: testing engineering.

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FIELD: mechanical engineering.

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FIELD: testing engineering.

SUBSTANCE: specimens for simulating worm turn are made of rotation body whose axial profile of the active surface is in coincidence with normal profile of the turn and outer diameter is equal to the diameter of the worm, and specimens for simulating tooth of the worm wheel are made of the worm wheel tooth whose dividing diameter is equal to that of the worm to be simulated. The specimen simulating the worm turn is made of the turn of the worm whose rise angle is equal to that of the turn worm to be simulated. The specimen simulating the tooth of the worm wheel is made of the tooth of the worm wheel with sloping angle of the worm wheel equal to the rise angle of the worm turn.

EFFECT: expanded functional capabilities.

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FIELD: testing equipment.

SUBSTANCE: apparatus has casing, loading drive mounted on casing, and commander device. Apparatus is further equipped with toothed gear including toothed wheel having section positioned at its crown and made in the form longitudinal slot, at 1/n length of circle of toothed crown. Toothed wheel is adapted for engagement with n number of gears rigidly connected with active grips. Active grips are positioned on bearing units of disk which is located for free rotation in conjunction with toothed wheel, parts to be tested and disk with passive grips immovably fixed thereon through predetermined angle by means of main motor-reducer with the help of electromagnetic coupling. The latter is controlled by means of measuring-commanding device which upon aligning of longitudinal slot provided on toothed wheel with precision reversing motor-reducer switches-on drive for meshing with cam, by means of which cam area of hysteresis loop is measured.

EFFECT: wider operational capabilities and improved quality of controlling of parts.

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