Mechanism for measuring multiple dimensions of motor rotor

Abstract

The utility model discloses a mechanism for measuring multiple dimensions of a motor rotor, which comprises a first support assembly, a second support assembly fixed with the first support assembly, and a sliding fit seat fixed on the first support assembly, the supporting part is used for supporting the rotor and is matched with the sliding fit seat; the clamping assembly is used for clamping the rotor, and the clamping assembly is matched with the sliding fit seat; the positioning mirror is used for observing the positions of multiple sizes on the rotor, is fixed with the second supporting assembly and is positioned on one side of the sliding fit seat; when the width of the notch groove on the commutator is measured, the rotor is erected and is in plug-in fit with the supporting component; when the lengths of the commutator finish turning section and the notch groove are measured, the two ends of the rotor are clamped by the clamping assemblies. According to the utility model, the length and width of the finish turning section and the notch groove on the commutator can be detected.

Description

Technical Field

[0001] This utility model relates to the field of motor rotors, and specifically to a measuring mechanism for multiple dimensions of motor rotors. Background Technology

[0002] A starting electronic rotor typically consists of a rotor core, windings, a shaft, and a commutator. The windings are fixed to the rotor core, the shaft passes through the rotor core and is connected to it, and the commutator is connected to one end of the shaft. The commutator usually has multiple grooves parallel to its axial direction on its circumferential surface, and these grooves are arranged at intervals along the circumference of the commutator.

[0003] After the semi-finished commutator is connected to the shaft, the commutator is precision machined by precision turning to form a precision-machined section on the commutator, and the groove is machined on the precision-machined section. After precision machining, the length of the precision-machined section, the length of the groove, and the width of the groove need to be inspected.

[0004] The currently used commutator lower groove measuring fixture includes a base plate, on which a length measuring gauge and a freely movable ejector pin are mounted. A sliding groove is provided on the base plate surface, within which a slidable commutator mounting shaft is located. The length measuring gauge is fixed to the base plate and includes a dial, a measuring rod, and a probe. One end of the ejector pin contacts the probe, and the other end extends into the sliding groove and points towards the commutator mounting shaft. This invention uses the commutator mounting shaft to fix the commutator under test, which allows the commutator to move within the sliding groove. During measurement, one end of the ejector pin contacts the probe, and the other end contacts the lower groove of the commutator. The probe indirectly measures the lower groove of the commutator by measuring the displacement of the ejector pin, and the measurement data can be directly read from the dial of the length measuring gauge. The groove measuring fixture with the above structure can only detect the depth of the groove. It cannot detect the length and width of the groove or the length of the precision machining section. Therefore, during mass production testing, samples need to be sent to the metrology laboratory for testing, which wastes a lot of time and delays production. Summary of the Invention

[0005] This invention provides a measuring mechanism for multiple dimensions of a motor rotor, which can detect the length and width of the precision-machined section and groove on the commutator.

[0006] A measuring mechanism for multiple dimensions of a motor rotor includes a first support assembly and a second support assembly, wherein the second support assembly is fixed to the first support assembly, and further includes:

[0007] A sliding mount, which is fixed to the first support assembly;

[0008] Support components for supporting the rotor, which cooperate with the sliding base;

[0009] The clamping assembly is matched with the sliding seat;

[0010] The positioning mirror is used for observing the positions of multiple dimensions on the rotor, and is fixed with the second supporting assembly. The positioning mirror is located on one side of the sliding seat.

[0011] When the width of the notch on the commutator is measured, the rotor is vertically erected and is inserted into the supporting part.

[0012] When the length of the finish turning section and the notch of the commutator is measured, the two ends of the rotor are clamped by the clamping assembly.

[0013] Further, the first supporting assembly is used for adjusting the horizontal position of the rotor, and comprises a first fixed seat, a first movable seat, a first linear driver, the first fixed seat and the first movable seat are slidingly matched, the first linear driver is connected with the first movable seat, and the sliding seat is fixed with the first movable seat.

[0014] Further, the second supporting assembly is used for adjusting the longitudinal position and the height position of the positioning mirror, and comprises a second fixed seat, a second movable seat, a second linear driver, a third fixed seat, a third movable seat and a third linear driver.

[0015] The second fixed seat is fixed with the first supporting assembly, the second movable seat is slidingly matched with the second fixed seat, and the second linear driver is connected with the second movable seat.

[0016] The third fixed seat is movably connected with the second movable seat, the third movable seat is slidingly matched with the third fixed seat, the third linear driver is connected with the third movable seat, and the positioning mirror is installed on the third movable seat.

[0017] Further, the sliding seat comprises a sliding seat body, the sliding seat body is provided with a sliding groove, the supporting part is slidingly matched with the sliding groove, and at least a part of the clamping assembly is slidingly matched with the sliding groove.

[0018] Further, the supporting part comprises a first sliding seat and a first support, the first sliding seat is slidingly matched with the sliding seat, the first support is connected with the first sliding seat, and the first support is provided with an insertion hole for inserting the rotor.

[0019] Further, the first support is provided with a retaining part for keeping the rotor in a vertical state, the retaining parts are located around the insertion hole, and one end of the retaining part is fixed with the first support.

[0020] The supporting part further comprises a locking part, the first sliding seat is provided with a mounting hole, one end of the first support is provided with a boss, the peripheral surface of the first sliding seat is provided with a threaded hole, the boss is insertedly matched with the mounting hole, the locking part is threadedly connected with the threaded hole of the first sliding seat, and the locking part is matched with the boss through the threaded hole to lock the circumferential direction of the boss.

[0021] Further, the clamping assembly comprises a fixed support, a first center, a movable support, a second center, a locking assembly for locking the movable support and the sliding seat, the fixed support is fixed with the sliding seat, the first center is fixed with the fixed support, the movable support is slidingly matched with the sliding seat, the second center is fixed with the movable support, the locking assembly is connected with the movable support, and the locking assembly is matched with the sliding seat.

[0022] Further, the locking assembly comprises a handle, a screw rod and a locking block, the movable support is provided with a clamping block, the clamping block is provided with a through hole, the locking block is matched with the sliding seat, the locking block is provided with a threaded mounting hole, one end of the handle is connected with the screw rod, and the screw rod is connected with the threaded mounting hole of the locking block after passing through the through hole of the clamping block.

[0023] In use, the rotor is assembled on the supporting part or clamped through the clamping assembly, the position on the positioning mirror is adjusted through the second supporting assembly, the rotor is moved through the first supporting assembly, the starting position of the measured part on the rotor corresponds to the scale line on the positioning mirror, the rotor is moved again through the first supporting assembly, the end position of the measured part on the rotor corresponds to the scale line on the positioning mirror, and the movement amount of the first supporting assembly is detected through the displacement sensor, that is, the size of the measured part. When the utility model is applied to the rapid detection means after motor rotor machining, especially, the rapid detection of various sizes of the rotor after machining can be realized on site. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a perspective view of the motor rotor multi-size measuring mechanism.

[0025] Figure 2 It is a structural view of the first supporting assembly.

[0026] Figure 3 It is a perspective view of the second supporting assembly.

[0027] Figure 4 It is a side view of the second supporting assembly.

[0028] Figure 5 It is a sectional view of the supporting part.

[0029] Figure 6 It is a matching view of the clamping assembly and the sliding seat.

[0030] MARKS IN THE DRAWINGS:

[0031] The first supporting assembly A, the first fixed seat 1, the first movable seat 2, the first linear driver 3, the second supporting assembly B, the second fixed seat 4, the first protrusion 4a, the first stroke limiting block 4b, the first strip-shaped hole 4c, the second movable seat 5, the second protrusion 5a, the first rod-shaped part 5b, the second linear driver 6, the third fixed seat 7, the third movable seat 8, the third protrusion 8a, the third linear driver 9, the sliding fitting seat C, the sliding fitting seat body 10, the sliding fitting groove 11, the supporting part D, the first sliding fitting seat 12, the mounting hole 12a, the guide block 12b, the first support 13, the plug-in hole 13a, the boss 13b, the retaining part 14, the locking part 15, the clamping assembly E, the fixed support 16, the connecting block 16a, the first tip 17, the movable support 18, the clamping block 18a, the second tip 19, the handle 19a, the screw rod 20, the locking block 21, the positioning mirror F. DETAILED DESCRIPTION

[0032] In order to more clearly illustrate the technical scheme in the utility model examples or prior art, the following will be a brief description of the drawings needed to be used in the embodiment or prior art description, obviously, the following description of the drawings is only some embodiments of the utility model, for those skilled in the art, without creative labor, other embodiments can also be obtained according to the drawings of the specification, these embodiments are still within the protection scope of the claims of the utility model.

[0033] As Figures 1 to 6 The utility model discloses a measuring mechanism for motor rotor multiple sizes, including first supporting assembly A, second supporting assembly B, sliding fitting seat C, clamping assembly E, supporting part D, clamping assembly E, positioning mirror F, the following will be the detailed description of each part and the relationship between them.

[0034] Sliding fitting seat C is fixed on the first supporting assembly A, clamping assembly E and supporting part D are respectively matched with sliding fitting seat C, and the rotor is matched with supporting part D or clamping assembly E, when the first supporting assembly works, the first supporting assembly is used for adjusting the horizontal position of the rotor, and the first supporting assembly A includes the first fixed seat 1, the first movable seat 2 and the first linear driver 3, the first fixed seat 1 and the first movable seat 2 are slidably matched, the first linear driver 3 is connected with the first movable seat 2, and the sliding fitting seat C is fixed with the first movable seat 2.The first supporting assembly A further includes a displacement sensor (not shown in the drawing), the first movable seat 2 is connected with the displacement sensor, the displacement sensor can adopt grating ruler, and the grating ruler is connected with industrial computer (not shown in the drawing).

[0035] In the embodiment, the first fixed seat 1 is provided with a guide rail, the first movable seat 2 is provided with a sliding groove, the sliding groove on the first movable seat 2 is in sliding cooperation with the guide rail on the first fixed seat 1, the first linear driver 3 is preferentially connected with the first movable seat 2 by screwing, for example, the first linear driver 3 comprises a screw rod, a hand wheel and a mounting seat, the screw rod passes through the mounting seat and is in rotational cooperation with the mounting seat, one end of the screw rod is connected with the first movable seat 2 by screwing, and the other end of the screw rod is fixed with the hand wheel, so that a screw mechanism is formed between the first movable seat 2, the first fixed seat 1 and the first linear driver 3. Therefore, when the first linear driver 3 is rotated, the first movable seat 2 is linearly moved in the horizontal direction (X direction) on the first fixed seat 1 by the action of the screw mechanism, so as to adjust the position of the rotor located above the first support assembly A. The first linear driver 3 can also be a linear driving component such as a pneumatic cylinder or a hydraulic cylinder.

[0036] The second support assembly B is fixed with the first support assembly A, the second support assembly B is used for adjusting the longitudinal position and the height position of the positioning mirror F, the second support assembly B comprises a second fixed seat 4, a second movable seat 5, a second linear driver 6, a third fixed seat 7, a third movable seat 8 and a third linear driver 9. The second fixed seat 4 is fixed with the first support assembly A, the second movable seat 5 is in sliding cooperation with the second fixed seat 4, and the second linear driver 6 is connected with the second movable seat 5. The third fixed seat 7 is movably connected with the second movable seat 5, the third movable seat 8 is in sliding cooperation with the third fixed seat 7, the third linear driver 9 is connected with the third movable seat 8, and the positioning mirror F is installed on the third movable seat 8.

[0037] In the embodiment, the second fixed seat 4 is provided with a first protrusion 4a, the first protrusion 4a is provided with a threaded hole, the second movable seat 5 is provided with a second protrusion 5a, and the second linear driver 6 is provided with a thread. The second linear driver 6 is connected with the threaded hole on the first protrusion 4a by screwing, the second linear driver 6 abuts against the second protrusion 5a, the second support assembly B further comprises a first tension spring (not shown in the figure), one end of the first tension spring is connected with the second fixed seat 4, and the other end of the first tension spring is connected with the second movable seat 5. When the second linear driver 6 is rotated in the forward direction, the second linear driver 6 applies power to the second protrusion 5a, so as to drive the second protrusion 5a to linearly advance along the longitudinal direction (Z direction) of the first fixed seat 1, and further drive the second movable seat 5 to linearly advance along the longitudinal direction of the first fixed seat 1. When the second movable seat 5 moves, the second movable seat 5 drives the first tension spring to stretch, and the first tension spring generates tension. When the second linear driver 6 is rotated in the reverse direction, the first tension spring contracts and drives the second movable seat 5 to linearly retreat along the longitudinal direction of the first fixed seat 1 under the action of the contraction force of the first tension spring. The connection mode of the second linear driver 6 and the first protrusion 4a can also adopt a screw mechanism structure, or the second linear driver 6 can adopt a pneumatic cylinder or a hydraulic cylinder.

[0038] A first stroke limiting block 4b is arranged on one side of the second fixed seat 4, and a first slot 4c is arranged on the first stroke limiting block 4b. A first rod-shaped component 5b is fixed on the second movable seat 5, and the first rod-shaped component 5b passes through the first slot 4c. When the second movable seat 5 moves forward or backward, the first rod-shaped component 5b abuts against the hole walls at both ends of the first slot 4c, thereby limiting the position of the second movable seat 5.

[0039] In this embodiment, a third protrusion 8a is arranged on the third movable seat 8, and a threaded hole is arranged on the third protrusion 8a. A third linear actuator 9 is arranged with a thread, and the third linear actuator 9 is screwed with the threaded hole on the third protrusion 8a. The third linear actuator 9 abuts against the third fixed seat 7. The second support assembly B further comprises a second tension spring (not shown in the figure). One end of the second tension spring is connected with the third fixed seat 7, and the other end of the second tension spring is connected with the third movable seat 8. When the third linear actuator 9 is rotated in a forward direction, the third movable seat 8 moves downward along the height direction (Y direction) of the first fixed seat 1, and the second tension spring is stretched when the third movable seat 8 moves downward, thereby generating a tension. When the third linear actuator 9 is rotated in a reverse direction, the second tension spring is contracted, and the third movable seat 8 moves upward along the height direction of the first fixed seat 1 under the contraction force of the second tension spring. The third linear actuator 9 can also be a pneumatic cylinder or a hydraulic cylinder.

[0040] A second stroke limiting block 7a is arranged on one side of the third fixed seat 7, and a second slot 7b is arranged on the second stroke limiting block 7a. A second rod-shaped component 8b is fixed on the third movable seat 8, and the second rod-shaped component 8b passes through the second slot 7b. When the third movable seat 8 moves downward or upward, the second rod-shaped component 8b abuts against the hole walls at both ends of the second slot 7b, thereby limiting the position of the third movable seat 8.

[0041] The sliding fitting seat C is fixed on the first support assembly A. The sliding fitting seat C comprises a sliding fitting seat body 10, and the sliding fitting seat body 10 is fixed with the first movable seat 2. The sliding fitting seat body 10 is provided with a sliding fitting groove 11, and the sliding fitting groove 11 is arranged along the X direction of the first fixed seat 1. The support component D and at least a part of the clamping assembly E are in sliding fit with the sliding fitting groove 11. When a pushing force along the X direction is applied to the support component D or the clamping assembly E, the support component D or the clamping assembly E can move along the sliding fitting groove 11.

[0042] The support component D is used for supporting the rotor, and the support component D is in cooperation with the sliding fitting seat C. The support component D comprises a first sliding fitting seat 12 and a first support seat 13. The first sliding fitting seat 12 is in sliding fit with the sliding fitting seat C. The bottom of the first sliding fitting seat 12 is provided with a guide block 12b, and the guide block 12b is in clearance fit with the sliding fitting groove 11, thereby enabling the first sliding fitting seat 12 to slide on the sliding fitting seat C.

[0043] The first support 13 is connected with the first sliding seat 12, and the first support 13 is provided with an insertion hole 13a for inserting the rotor, one end of the rotor is inserted into the insertion hole 13a. The first support 13 is provided with a retaining component 14 for keeping the rotor in a vertical state, the retaining components 14 are located around the insertion hole 13a, and one end of the retaining component 14 is fixed with the first support 13. The rotor is provided with a slot, and the other end of the retaining component 14 is inserted into the slot on the rotor, so as to ensure that the rotor is kept in a vertical state.

[0044] The supporting component D further comprises a locking component 15, the first sliding seat 12 is provided with a mounting hole 12a, one end of the first support 13 is provided with a boss 13b, and the first support 13 is connected with the mounting hole 12a in a clearance fit through the boss 13b, so that the first support 13 is movably connected with the first sliding seat 12. The first sliding seat 12 is provided with a threaded hole in the peripheral surface, the boss 13b is inserted into the mounting hole 12a in a fit, the locking component 15 is threadedly connected with the threaded hole on the first sliding seat 12, and the locking component 15 is connected with the boss 13b through the threaded hole to lock the periphery of the boss 13b.

[0045] The clamping assembly E is used for clamping the rotor, and is connected with the sliding seat C. The clamping assembly E comprises a fixed support 16, a first center 17, a movable support 18, a second center 19, and a locking assembly for locking the movable support 18 with the sliding seat C. The fixed support 16 is fixed with the sliding seat C, the first center 17 is fixed with the fixed support 16, and one end of the fixed support 16 is provided with a connecting block 16a which is connected with the sliding groove 11. The connecting block 16a and the sliding groove 11 can be connected in an interference fit to fix the fixed support 16 with the sliding seat body 10, or can be connected by welding.

[0046] The movable support 18 is slidably connected with the sliding seat C, the second center 19 is fixed with the movable support 18, the locking assembly is connected with the movable support 18, and the locking assembly is connected with the sliding seat C. The locking assembly comprises a handle 19a, a screw rod 20, and a locking block 21. The movable support 18 is provided with a clamping block 18a, the clamping block 18a is provided with a through hole, the locking block 21 is connected with the sliding seat C, the locking block 21 is provided with a threaded mounting hole, one end of the handle 19a is connected with the screw rod 20, and the screw rod 20 is connected with the threaded mounting hole of the locking block 21 through the through hole of the clamping block 18a.

[0047] The positioning mirror F is used for observing the positions of multiple dimensions on the rotor, and is fixed with the second supporting assembly B. The positioning mirror F is fixed on the third movable seat 8 and located on one side of the sliding seat C. The positioning mirror F preferably adopts a microscope.

[0048] When measuring the width of the notch on the commutator, the longitudinal position and the height position of the positioning mirror F are adjusted by the second supporting assembly B. The rotor is erected and is inserted into the supporting assembly D. The first movable seat 2 is driven by the first linear actuator 3 to move the rotor along the X direction. When the scale line on the positioning mirror F corresponds to the starting position of the width direction of the notch, the movement of the first movable seat 2 is stopped. Since the displacement sensor transmits the displacement to the industrial computer during the movement, the displacement is cleared at this time by the industrial computer. Then the first movable seat 2 is driven by the first linear actuator 3 to move the rotor along the X direction. When the scale line on the positioning mirror F corresponds to the terminal position of the width direction of the notch, the movement of the first movable seat 2 is stopped. Since the displacement sensor transmits the displacement to the industrial computer during the movement, the reading displayed on the industrial computer at this time is the width of the notch.

[0049] When measuring the length of the finish-machined section and the length of the notch on the commutator, the supporting assembly D is removed from the sliding fitting seat C, and the two ends of the rotor are clamped by the clamping assembly E, i.e. one end of the rotor abuts against the first center 17 and the other end of the rotor abuts against the second center 19. The length of the finish-machined section and the length of the notch on the commutator are measured according to the above method for measuring the width of the notch.

Claims

1. A measuring mechanism for the multiple dimensions of an electric machine rotor, comprising a first support assembly (A), a second support assembly (B) fixed to the first support assembly (A), characterized in that, Also included are: a sliding seat (C) fixed on the first support assembly (A); a support component (D) for supporting the rotor, which is matched with the sliding seat (C); a clamping assembly (E) for clamping the rotor, which is matched with the sliding seat (C); a positioning mirror (F) for observing the positions of multiple dimensions on the rotor, which is fixed on the second support assembly (B) and located on one side of the sliding seat (C); when measuring the width of the notch on the commutator, the rotor is vertically inserted into the support component (D); when measuring the length of the precisely machined section and the notch, the two ends of the rotor are clamped by the clamping assembly (E).

2. The mechanism for measuring multiple dimensions of an electrical machine rotor according to claim 1, wherein, The first support assembly is used to adjust the horizontal position of the rotor, and the first support assembly (A) comprises a first fixed seat (1), a first movable seat (2), and a first linear actuator (3). The first fixed seat (1) and the first movable seat (2) are slidingly matched, the first linear actuator (3) is connected with the first movable seat (2), and the sliding seat (C) is fixed with the first movable seat (2).

3. The mechanism for measuring multiple dimensions of an electrical machine rotor according to claim 1, wherein, The second support assembly (B) is used to adjust the longitudinal position and height position of the positioning mirror (F), and the second support assembly (B) comprises a second fixed seat (4), a second movable seat (5), a second linear actuator (6), a third fixed seat (7), a third movable seat (8), and a third linear actuator (9). The second fixed seat (4) is fixed with the first support assembly (A), the second movable seat (5) is slidingly matched with the second fixed seat (4), and the second linear actuator (6) is connected with the second movable seat (5). The third fixed seat (7) is movably connected with the second movable seat (5), the third movable seat (8) is slidingly matched with the third fixed seat (7), and the third linear actuator (9) is connected with the third movable seat (8). The positioning mirror (F) is installed on the third movable seat (8).

4. The mechanism for measuring multiple dimensions of an electrical machine rotor according to claim 1, wherein, The sliding seat (C) comprises a sliding seat body (10) provided with a sliding groove (11), the support component (D) is slidingly matched with the sliding groove (11), and at least a part of the clamping assembly (E) is slidingly matched with the sliding groove (11).

5. The mechanism for measuring multiple dimensions of an electrical machine rotor according to claim 1, wherein, The support component (D) comprises a first sliding seat (12) and a first support (13). The first sliding seat (12) is slidingly matched with the sliding seat (C), the first support (13) is connected with the first sliding seat (12), and the first support (13) is provided with an insertion hole (13a) for inserting the rotor.

6. The mechanism for measuring multiple dimensions of an electrical machine rotor according to claim 5, wherein, The first support (13) is provided with retaining components (14) for keeping the rotor in a vertical state. The retaining components (14) are located around the insertion hole (13a), and one end of the retaining component (14) is fixed with the first support (13).

7. The mechanism for measuring multiple dimensions of an electrical machine rotor according to claim 5, wherein, The support component (D) further comprises a locking component (15), the first sliding seat (12) is provided with a mounting hole (12a), one end of the first support (13) is provided with a boss (13b), the periphery of the first sliding seat (12) is provided with a threaded hole, the boss (13b) is inserted into the mounting hole (12a) in a fit manner, the locking component (15) is threadedly connected with the threaded hole of the first sliding seat (12), and the locking component (15) is matched with the boss (13b) through the threaded hole to lock the periphery of the boss (13b).

8. The mechanism for measuring multiple dimensions of an electrical machine rotor according to claim 1, wherein, The clamping assembly (E) comprises a fixed support (16), a first center (17), a movable support (18), a second center (19) and a locking assembly for locking the movable support (18) and the sliding seat (C), the fixed support (16) is fixed with the sliding seat (C), the first center (17) is fixed with the fixed support (16), the movable support (18) is slidably connected with the sliding seat (C), the second center (19) is fixed with the movable support (18), the locking assembly is connected with the movable support (18), and the locking assembly is matched with the sliding seat (C).

9. The mechanism for measuring multiple dimensions of an electrical machine rotor according to claim 8, wherein, The locking assembly comprises a handle (19a), a screw rod (20) and a locking block (21), the movable support (18) is provided with a clamping block (18a), the clamping block (18a) is provided with a through hole, the locking block (21) is matched with the sliding seat (C), the locking block (21) is provided with a threaded mounting hole, one end of the handle (19a) is connected with the screw rod (20), and the screw rod (20) is connected with the threaded mounting hole of the locking block (21) after penetrating through the through hole of the clamping block (18a).

Images