Fatigue detection sample longitudinal grain processor

Abstract

The utility model relates to a material polishing device, belongs to a fatigue detection sample longitudinal grain processor, and solves the problems that the external part of a sample has no transverse grains and circumferential grains, the external longitudinal grains of the sample have no repeated polishing grains in a single direction, the sample is difficult to polish, and time and labor are wasted. According to the scheme, a reciprocating feeding mechanism and a polishing feeding mechanism are both fixed to a machine table, a sample circumferential rotating mechanism is connected with the reciprocating feeding mechanism and used for clamping and rotating a sample, and the reciprocating feeding mechanism is used for moving the sample circumferential rotating mechanism to reciprocate in the axis direction of the sample; the grinding feeding mechanism is connected with the grinding mechanism, the grinding mechanism is used for grinding the middle of the sample, and the grinding feeding mechanism is used for moving the grinding mechanism to feed in the normal direction of the axis of the sample. And the working efficiency can be improved, and the grinding time is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to material polishing device belongs to a fatigue test sample longitudinal line processing machine. BACKGROUND

[0002] When the sample is detected, the sample processing surface state is also an important consideration factor. The smoothness and roughness of the sample surface will directly affect the test result, and if the surface is too rough or uneven, it will lead to the increase of test result error.

[0003] The surface roughness of an aluminum alloy test sample is required to reach Ra0.2, and the surface processing trace direction of the sample piece has strict requirements. The sample piece is required to have no horizontal lines and circular lines, and the longitudinal lines are required to have single direction without repeated polishing lines. In order to meet the above requirements, the sample polishing is difficult and time-consuming. UTILITY MODEL CONTENTS

[0004] The utility model discloses in order to solve the requirement that the external sample piece has no horizontal lines and circular lines, and the external longitudinal lines of the sample piece have single direction without repeated polishing lines, the sample polishing is difficult and time-consuming, and the application proposes a fatigue test sample longitudinal line processing machine.

[0005] A fatigue test sample longitudinal line processing machine, which comprises a sample circumferential rotation mechanism, a polishing mechanism, a reciprocating feeding mechanism, a water supply system, a polishing feeding mechanism and a machine table.

[0006] The reciprocating feeding mechanism and the polishing feeding mechanism are fixed on the machine table, the sample circumferential rotation mechanism is connected with the reciprocating feeding mechanism, the sample circumferential rotation mechanism is used for clamping and rotating the sample, the reciprocating feeding mechanism is used for moving the sample circumferential rotation mechanism to reciprocate along the sample axis direction, the polishing feeding mechanism is connected with the polishing mechanism, and the polishing mechanism is used for polishing the middle part of the sample.

[0007] The polishing mechanism comprises a sand belt driving servo motor, a connecting plate, a driving wheel, a polishing rubber roller and a sand belt.

[0008] The polishing feeding mechanism is fixedly connected with the connecting plate, the sand belt driving servo motor is fixed on the connecting plate, the driving wheel is connected with the output shaft of the sand belt driving servo motor, the polishing rubber roller is fixed on one end of the connecting plate close to the sample circumferential rotation mechanism, and the sand belt is sleeved on the outside of the driving wheel and the polishing rubber roller.

[0009] Further, the sample circumferential rotation mechanism comprises a servo motor, a driving top pin, a lathe headstock, a lathe tailstock, a distance adjusting top pin, a supporting plate and a hand wheel.

[0010] The servo motor, the lathe headstock and the lathe tailstock are sequentially and fixedly arranged on the support plate from left to right, the driving pin is rotationally connected with the lathe headstock, the tail end of the driving pin is fixedly connected with the output end of the servo motor, the distance adjusting pin is threadedly connected with the lathe tailstock, the tail end of the distance adjusting pin is fixedly connected with the hand wheel, and the head end of the driving pin is oppositely arranged with the head end of the distance adjusting pin.

[0011] Further, two linear guides B are symmetrically arranged at the lower part of the support plate, and the two linear guides B are fixedly arranged on the machine table and slidably connected with the support plate.

[0012] Further, the reciprocating feeding mechanism comprises a screw B, a nut B and a feeding servo motor.

[0013] The nut B is fixedly connected with the support plate, the screw B is threadedly connected with the nut B, the screw B is fixedly connected with the output end of the feeding servo motor, and the position of the feeding servo motor is fixed.

[0014] Further, the nut B is fixedly arranged below the support plate.

[0015] Further, a water supply system is fixedly arranged on the sample circumferential rotation mechanism or the machine table, and the water supply system is used for flushing the polishing position of the sample.

[0016] Further, the water supply system comprises a water pump and a water collecting box.

[0017] The water collecting box is located between the lathe headstock and the lathe tailstock, and the water collecting box is fixedly arranged above the support plate.

[0018] The water pump is connected with the water collecting box, the water collecting box is used for storing water source, and the water pump is used for spraying the polishing position of the sample.

[0019] Further, the water pump is connected with the water collecting box through a hose, and a spray head is connected with the outlet of the water pump.

[0020] Further, the sand belt driving and feeding mechanism comprises a position adjusting servo motor, a screw A, an air cylinder and a nut A.

[0021] The output end of the position adjusting servo motor is connected with the screw A, the screw A is threadedly connected with the nut A, the air cylinder is fixedly connected with the nut A, and the output end of the air cylinder is fixedly connected with the connecting plate.

[0022] Further, two linear guides A are symmetrically arranged at the lower part of the connecting plate, and the two linear guides A are fixedly arranged on the machine table and slidably connected with the connecting plate.

[0023] Beneficial effects:

[0024] When the fatigue testing specimen longitudinal texture treatment machine of this scheme is in operation, the specimen is placed on the specimen circumferential rotation mechanism, and the specimen performs circumferential rotation to achieve specimen indexing rotation. The reciprocating feed mechanism drives the specimen circumferential rotation mechanism to perform reciprocating motion. When the grinding mechanism contacts the specimen, it performs longitudinal grinding treatment on the specimen surface, creating longitudinal texture marks on the specimen surface. The grinding feed mechanism controls the grinding force and drives the grinding mechanism to move along the sample for precise grinding. After each grinding along the longitudinal direction of the sample, the reciprocating feed mechanism and the grinding feed mechanism return to their initial positions. The sample circumferential rotation mechanism rotates the sample by a certain angle and then grinds again. This grinding process is repeated until the sample is finished, ensuring fine grinding of the sample. The surface roughness of the sample can reach Ra0.2, and the transverse and circumferential lines on the sample surface can be eliminated. Since the grinding is carried out in only one direction along the longitudinal direction of the workpiece, there are no repeated grinding marks on the longitudinal lines of the sample, which can meet the requirement of single longitudinal lines. Using this fatigue testing sample longitudinal line processing machine, the sample grinding is easy for operators to implement, the sample grinding becomes simple, the work efficiency can be increased, and the grinding time is saved. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a fatigue testing specimen longitudinal texture treatment machine;

[0026] Figure 2 yes Figure 1 Top view;

[0027] Figure 3 yes Figure 1 EE direction diagram;

[0028] Figure 4 yes Figure 3 A schematic diagram of the FF direction. Detailed Implementation

[0029] Specific implementation method 1: A fatigue test specimen longitudinal texture treatment machine, which includes a specimen circumferential rotation mechanism 1, a grinding mechanism 2, a reciprocating feeding mechanism 3, a water supply system 4, a grinding feeding mechanism 5, and a machine base 6.

[0030] Both the reciprocating feed mechanism 3 and the grinding feed mechanism 5 are fixed on the machine base 6. The sample circumferential rotation mechanism 1 is connected to the reciprocating feed mechanism 3. The sample circumferential rotation mechanism 1 is used to clamp and rotate the sample. The reciprocating feed mechanism 3 is used to move the sample circumferential rotation mechanism 1 to reciprocate along the sample axis. The grinding feed mechanism 5 is connected to the grinding mechanism 2. The grinding mechanism 2 is used to grind the middle part of the sample. The grinding feed mechanism 5 is used to move the grinding mechanism 2 to feed along the normal direction of the sample axis.

[0031] The polishing mechanism 2 comprises a sand belt driving servo motor 2-5, a connecting plate 2-1, a driving wheel 2-2, a polishing rubber roller 2-3 and a sand belt 2-4.

[0032] The polishing feed mechanism 5 is fixedly connected with the connecting plate 2-1, the sand belt driving servo motor 2-5 is fixed on the connecting plate 2-1, the driving wheel 2-2 is connected with the output shaft of the sand belt driving servo motor 2-5, the polishing rubber roller 2-3 is fixed on the connecting plate 2-1 close to one end of the sample circumferential rotation mechanism 1, and the sand belt 2-4 is sleeved outside the driving wheel 2-2 and the polishing rubber roller 2-3.

[0033] In the embodiment, the reciprocating feed mechanism and the polishing feed mechanism are fixed on the machine table, the sample circumferential rotation mechanism is connected with the reciprocating feed mechanism 3, the sample circumferential rotation mechanism is used for clamping and rotating the sample, the reciprocating feed mechanism is used for moving the sample circumferential rotation mechanism to reciprocate along the sample axis direction, the polishing feed mechanism is connected with the polishing mechanism, and the polishing mechanism is used for polishing the middle part of the sample.

[0034] The sand belt driving servo motor of the polishing mechanism drives the driving wheel to rotate, the sand belt is sleeved outside the driving wheel and the polishing rubber roller, and the sand belt rotates to polish the sample.

[0035] Specific embodiment two: a fatigue test sample longitudinal line processing machine, the sample circumferential rotation mechanism 1 comprises a servo motor 1-1, a driving needle 1-2, a lathe headstock 1-3, a lathe tailstock 1-4, a distance adjusting needle 1-5, a support plate 1-6 and a hand wheel 1-7.

[0036] The servo motor 1-1, the lathe headstock 1-3 and the lathe tailstock 1-4 are sequentially and spacedly fixed on the support plate 1-6 from left to right, the driving needle 1-2 is rotationally connected with the lathe headstock 1-3, the tail end of the driving needle 1-2 is fixedly connected with the output end of the servo motor 1-1, the distance adjusting needle 1-5 is threadedly connected with the lathe tailstock 1-4, the tail end of the distance adjusting needle 1-5 is fixedly connected with the hand wheel 1-7, and the head end of the driving needle 1-2 and the head end of the distance adjusting needle 1-5 are oppositely arranged.

[0037] In the embodiment, the hand wheel rotates the distance adjusting needle, the distance adjusting needle moves along the axial direction thereof until the distance adjusting needle and the driving needle clamp the sample, and the sample rotates with the driving needle when the servo motor works.

[0038] Other embodiments are the same as the specific embodiment one.

[0039] Specific embodiment three: a fatigue test sample longitudinal line processing machine, two linear guides B1-8 are symmetrically arranged on the lower part of the support plate 1-6, the two linear guides B1-8 are fixed on the machine table 6, and the two linear guides B1-8 are slidably connected with the support plate 1-6.

[0040] In this embodiment: the support plate is in sliding connection with the linear guide rail B, which is conducive to reducing friction during reciprocating movement of the support plate.

[0041] Other embodiments are the same as embodiment two.

[0042] Embodiment four: a fatigue test sample longitudinal line processing machine, the reciprocating feed mechanism 3 comprises a lead screw B3-1, a nut B3-2 and a feed servo motor 3-3;

[0043] The nut B3-2 is fixedly connected with the support plate 1-6, the lead screw B3-1 is threadedly connected with the nut B3-2, the lead screw B3-1 is fixedly connected with the output end of the feed servo motor 3-3, the position of the feed servo motor 3-3 is fixed, and when the feed servo motor 3-3 works, the lead screw B3-1 rotates, and the support plate 1-6 moves along the length direction of the lead screw B3-1 with the nut B3-2.

[0044] In this embodiment: the feed servo motor is fixed on the machine table, when the feed servo motor works, it drives the lead screw B to rotate, and the nut B and the support plate move together along the axis direction of the lead screw B, and when working, the positioning servo motor works to drive the support plate to reciprocate with the nut.

[0045] Other embodiments are the same as embodiment two.

[0046] Embodiment five: a fatigue test sample longitudinal line processing machine, the nut B3-2 is fixed below the support plate 1-6.

[0047] In this embodiment: the nut B is fixed below the support plate, which does not occupy the space above the support plate, and the space above the support plate is reserved for other purposes.

[0048] Other embodiments are the same as embodiment four.

[0049] Embodiment six: a fatigue test sample longitudinal line processing machine, a water supply system 4 is fixed on the sample circumferential rotation mechanism 1 or the machine table 6, which is used to flush the sample polishing position, cool the sample, and avoid dust flying.

[0050] In this embodiment: the water supply system is used to flush the sample polishing position,

[0051] Other embodiments are the same as embodiment one.

[0052] Embodiment seven: a fatigue test sample longitudinal line processing machine, the water supply system 4 comprises a water pump 4-1 and a water collecting box 4-2;

[0053] The water collecting box 4-2 is located between the headstock 1-3 and the tailstock 1-4 of the lathe, and is fixed above the support plate 1-6,

[0054] The water pump 4-1 is connected with the water collecting box 4-2, the water collecting box 4-2 is used for storing water, and the water pump 4-1 is used for spraying the polishing position of the sample.

[0055] In the embodiment, the water pump is used for spraying the water in the water collecting box to the polishing position of the sample, the sample can be sprayed, the sample can be cooled, and the dust can be prevented from being scattered.

[0056] Other embodiments are the same as embodiment six.

[0057] Embodiment eight: a fatigue test sample longitudinal line processing machine, the water pump 4-1 is connected with the water collecting box 4-2 through a hose, and the outlet of the water pump 4-1 is connected with a spray head.

[0058] In the embodiment, the water pump is connected with the water collecting box through a hose, the hose guides the water flow, the hose enables the water pump to be moved, the outlet position of the water pump can face the sample, the spray head connected with the outlet of the water pump can spray the sample, the sample can be cooled, and the dust can be prevented from being scattered.

[0059] Other embodiments are the same as embodiment seven.

[0060] Embodiment nine: a fatigue test sample longitudinal line processing machine, the abrasive belt driving and feeding mechanism 5 comprises a positioning servo motor 2-1, a lead screw A 2-2, a cylinder 2-3 and a nut A 5-4.

[0061] The output end of the positioning servo motor 5-1 is connected with the lead screw A 5-2, the lead screw A 5-2 is threadedly connected with the nut A 5-4, the cylinder 5-3 is fixedly connected with the nut A 5-4, and the output end of the cylinder 5-3 is fixedly connected with the connecting plate 2-1.

[0062] In the embodiment, the positioning servo motor is fixed on the machine table, when the positioning servo motor works, the lead screw A is driven to rotate, the nut A and the cylinder move along the axis direction of the lead screw A, the connecting plate is connected with the cylinder, when the cylinder moves, the polishing pressure is controlled, when working, the positioning servo motor works first, the connecting plate is moved to the position where the polishing mechanism works, the feeding servo motor drives the lead screw A and the nut A to adjust the position of the connecting plate, and then drives the abrasive belt to move along the sample to be shaped and polished accurately.

[0063] Other embodiments are the same as embodiment one.

[0064] Specific implementation ten: a fatigue detection sample longitudinal line processing machine, two linear guides A2-6 are symmetrically arranged at the lower part of the connecting plate 2-1, the two linear guides A2-6 are fixed on the machine table 6, and the two linear guides A2-6 are in sliding connection with the connecting plate 2-1.

[0065] In this embodiment: the connecting plate is in sliding connection with the linear guide A, which is beneficial to reducing friction during reciprocating movement of the connecting plate.

[0066] Other embodiments are the same as specific implementation nine.

[0067] Embodiment:

[0068] In operation, the test piece is placed between the driving pin and the driven pin, the driven pin is adjusted in position along the lathe tailstock by rotating the hand wheel, the test piece is fixed by the driving pin and the driven pin, and the test piece is rotated in a circle under the driving of the servo motor to realize index rotation of the test piece. The screw nut B is connected with the support plate, the feed servo motor is connected with the lead screw B, the movement of the screw nut is driven, and the whole support plate is driven to reciprocate. The sand belt driving servo motor drives the driving wheel. The sand belt is hung between the driving wheel and the polishing rubber roller, the sand belt rotates at high speed, and when the sand belt contacts the test piece, the surface of the test piece is longitudinally polished to process longitudinal marks on the surface of the test piece. The sand belt driving servo motor, the driving wheel, the sand belt and the polishing rubber roller are installed on the connecting plate. The air cylinder is connected with the screw nut A and the connecting plate respectively to control the polishing force. The feed servo motor drives the lead screw A and the screw nut A to adjust the position of the connecting plate, and then drives the sand belt to move along the test piece to realize accurate polishing.

[0069] The workpiece surface treatment adopts the sand belt polishing method, and the sand belt can be selected as a 400 mesh sand belt. The water system is turned on during the polishing process to reduce the polishing temperature and dust. The sand belt is polished along the length direction of the test piece (the longitudinal direction of the test piece), and the polishing line speed is controlled at 80-100 m / min. The sand belt rotating device is controlled by the air cylinder during polishing to control the pressure and the positioning servo motor to control the profile. A pressure of 2.5-3 kg is applied to the test piece in the vertical direction of the test piece. During the polishing process, the sand belt rotating device does not displace in the longitudinal direction of the test piece. The test piece is clamped between the tailstock and the center, the rear part of the center is connected with the servo motor, and the circumferential rotation of the test piece is accurately controlled. The whole test piece circumferential rotation mechanism is driven by the reciprocating feed mechanism, and the test piece is reciprocated. The longitudinal oscillation speed of the test piece is controlled at 1.8 m / min. The circumferential rotation speed of the test piece is controlled at 4 seconds per rotation, and one rotation is 36 degrees. The fast retreat speed of the test piece is controlled at 30 m / min.

[0070] In operation, first, each system device is zeroed, and a sample is manually clamped. After the sample is installed, the operation sequence is as follows: first, the polishing mechanism is started, and the abrasive belt is close to the sample for polishing. At the same time, the reciprocating feed mechanism is started, and the abrasive belt is polished on the surface of the sample in a longitudinal one-way manner. When the single polishing is completed, the polishing feed mechanism drives the abrasive belt away from the surface of the sample. The reciprocating feed mechanism reverses and quickly retreats, and the sample is retreated to the initial position. At the same time, the sample circumferential rotation mechanism is started, and the sample is rotated by 36 degrees. After the quick retreat to the initial position, the servo motor stops running, the polishing mechanism and the polishing feed mechanism are started, and the abrasive belt is close to the sample for polishing. The above process is repeated 10 times until the sample polishing is completed.

Claims

1. A fatigue test sample crosshatch processor, characterized by: It includes sample circumferential rotation mechanism (1), polishing mechanism (2), reciprocating feed mechanism (3) and water supply system (4), polishing feed mechanism (5) and machine table (6); Reciprocating feed mechanism (3) and polishing feed mechanism (5) are fixed on the machine table (6), the sample circumferential rotation mechanism (1) is connected with the reciprocating feed mechanism (3), the sample circumferential rotation mechanism (1) is used for clamping and rotating the sample, the reciprocating feed mechanism (3) is used for moving the sample circumferential rotation mechanism (1) reciprocating motion along the sample axis direction, the polishing feed mechanism (5) is connected with the polishing mechanism (2), the polishing mechanism (2) is used for polishing the middle part of the sample, and the polishing feed mechanism (5) is used for moving the polishing mechanism (2) along the normal direction of the sample axis. The polishing mechanism (2) comprises a sand belt driving servo motor (2-5), a connecting plate (2-1), a driving wheel (2-2), a polishing rubber roller (2-3) and a sand belt (2-4). The polishing feed mechanism (5) is fixedly connected with the connecting plate (2-1), the sand belt driving servo motor (2-5) is fixed on the connecting plate (2-1), the driving wheel (2-2) is connected with the output shaft of the sand belt driving servo motor (2-5), the polishing rubber roller (2-3) is fixed on one end of the connecting plate (2-1) close to the sample circumferential rotation mechanism (1), and the sand belt (2-4) is sleeved on the outside of the driving wheel (2-2) and the polishing rubber roller (2-3).

2. A sample bar streaking machine as claimed in claim 1, wherein: The sample circumferential rotation mechanism (1) comprises a servo motor (1-1), a driving needle (1-2), a lathe headstock (1-3), a lathe tailstock (1-4), a distance adjusting needle (1-5), a support plate (1-6) and a hand wheel (1-7); The servo motor (1-1), the lathe headstock (1-3) and the lathe tailstock (1-4) are sequentially and spacedly fixed on the support plate (1-6) from left to right, the driving needle (1-2) is rotationally connected with the lathe headstock (1-3), the tail end of the driving needle (1-2) is fixedly connected with the output end of the servo motor (1-1), the distance adjusting needle (1-5) is threadedly connected with the lathe tailstock (1-4), the tail end of the distance adjusting needle (1-5) is fixedly connected with the hand wheel (1-7), and the head end of the driving needle (1-2) and the head end of the distance adjusting needle (1-5) are oppositely arranged.

3. A sample bar streaking machine as claimed in claim 2, wherein: Two linear guides B (1-8) are symmetrically arranged on the lower part of the support plate (1-6), the two linear guides B (1-8) are fixed on the machine table (6), and the two linear guides B (1-8) are slidably connected with the support plate (1-6).

4. A sample bar streaking machine as defined in claim 2, wherein: The reciprocating feed mechanism (3) comprises a lead screw B (3-1), a nut B (3-2) and a feed servo motor (3-3); The nut B (3-2) is fixedly connected with the support plate (1-6), the lead screw B (3-1) is threadedly connected with the nut B (3-2), the lead screw B (3-1) is fixedly connected with the output end of the feed servo motor (3-3), the position of the feed servo motor (3-3) is fixed, when the feed servo motor (3-3) works, the lead screw B (3-1) rotates, and the support plate (1-6) moves along the length direction of the lead screw B (3-1) with the nut B (3-2).

5. A sample bar streaking machine as claimed in claim 4, wherein: The wire mother B (3-2) is fixed below the support plate (1-6).

6. A sample bar streaking machine as defined in claim 1, wherein: A water supply system (4) is fixed on the sample circumferential rotation mechanism (1) or the machine table (6), and is used for flushing the polishing position of the sample.

7. A sample bar streaking machine as claimed in claim 6, wherein: The water supply system (4) comprises a water pump (4-1) and a water collecting box (4-2). The water collecting box (4-2) is located between the lathe headstock (1-3) and the lathe tailstock (1-4), and is fixed above the support plate (1-6). The water pump (4-1) is connected with the water collecting box (4-2), the water collecting box (4-2) is used for storing water source, and the water pump (4-1) is used for spraying the polishing position of the sample.

8. A sample bar streaking machine as claimed in claim 7, wherein: The water pump (4-1) is connected with the water collecting box (4-2) through a hose, and the outlet of the water pump (4-1) is connected with a spray head.

9. A sample bar streaking machine as defined in claim 1 wherein: The polishing feeding mechanism (5) comprises a positioning servo motor (5-1), a lead screw A (5-2), an air cylinder (5-3) and a wire mother A (5-4). The output end of the positioning servo motor (5-1) is connected with the lead screw A (5-2), the lead screw A (5-2) is threadedly connected with the wire mother A (5-4), the air cylinder (5-3) is fixedly connected with the wire mother A (5-4), and the output end of the air cylinder (5-3) is fixedly connected with the connecting plate (2-1).

10. A sample bar streaking machine as claimed in claim 9, wherein: Two linear guides A (2-6) are symmetrically arranged at the lower part of the connecting plate (2-1), the two linear guides A (2-6) are fixed on the machine table (6), and the two linear guides A (2-6) are slidably connected with the connecting plate (2-1).

Images