Rough turning clamp for inner hole of inner shell of thin-wall motor

Abstract

The utility model relates to a thin-wall motor inner shell inner hole rough turning clamp which comprises a base, a through hole is formed in the center of the base, a connecting shaft is fixedly connected in the through hole, a plurality of positioning grooves are formed in the edge of the upper surface of the base, transverse positioning structures are installed in the positioning grooves, and the transverse positioning structures are fixedly connected with the connecting shaft. The edge of the upper surface of the base is further fixedly connected with a plurality of longitudinal positioning structures, the multiple longitudinal positioning structures are located between every two adjacent transverse positioning structures, and a workpiece containing area is defined by the multiple transverse positioning structures and the longitudinal positioning structures. The flange end of the thin-wall motor inner shell is limited and fixed, so that the stability of a workpiece in the machining process is guaranteed, a clamping part is prevented from being in contact with the outer wall of the thin-wall motor inner shell, and the outer wall of the motor inner shell cannot be deformed in the dismounting and mounting processes.

Description

Technical Field

[0001] The utility model relates to the technical field of lathe clamps, in particular to a clamp for rough turning the inner hole of a thin-walled motor inner shell. Background Art

[0002] During the rough turning process of the inner hole of the thin-walled motor inner housing, when the traditional three-jaw chuck is used to clamp the thin-walled motor inner housing, the uneven distribution of the clamping force will cause the workpiece to deform under the action of the cutting force, clamping force and cutting heat, affecting the accuracy and shape of the workpiece. This deformation is particularly obvious for thin-walled parts with poor rigidity. When a three-jaw chuck is used to clamp the thin-walled outer circle, the clamping part of the jaws may swell due to elastic deformation after removal, causing the part to be polygonal, thereby affecting the geometric shape and accuracy of the part. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a fixture for rough turning the inner hole of a thin-walled motor inner housing, which is used to solve the problem that when a traditional three-jaw chuck clamps the thin-walled motor inner housing, the workpiece is easily deformed.

[0004] The utility model discloses a fixture for rough turning the inner hole of an inner shell of a thin-walled motor, comprising a base, a through hole being opened in the center of the base, a connecting shaft being fixedly connected inside the through hole, a plurality of positioning grooves being opened at the edge of the upper surface of the base, a transverse positioning structure being installed inside the positioning groove, a plurality of longitudinal positioning structures being fixedly connected at the edge of the upper surface of the base, a plurality of the longitudinal positioning structures being respectively located between two adjacent transverse positioning structures, and a workpiece placement area being formed between the plurality of the transverse positioning structures and the longitudinal positioning structures.

[0005] As a further improvement of the utility model, the lateral positioning structure includes a positioning block and a limiting block, the positioning block is fixedly connected to the inside of the positioning groove, and the limiting block is fixedly connected to the upper surface of the positioning block by bolts.

[0006] As a further improvement of the present invention, the side surface of the limit block is an "L"-shaped structure, and an arc-shaped protrusion is integrally formed on one side of the limit block close to the center of the base.

[0007] As a further improvement of the utility model, the longitudinal positioning structure includes a fixing block, a second screw hole is opened on the upper surface of the base and close to the edge, a second connecting hole is opened at the position of the fixing block corresponding to the second threaded hole, and a second bolt is inserted between the second connecting hole and the second screw hole.

[0008] As a further improvement of the utility model, a fixing sleeve is fixedly connected to the center of the fixing block near the edge of the base, a screw is fixedly connected to the inside of the fixing sleeve, the threaded end of the screw extends beyond the top of the fixing sleeve, and a clamping block and a nut are sleeved on the upper end of the screw, and the nut is located above the clamping block.

[0009] As a further improvement of the utility model, a support block is fixedly connected to the central position of the upper surface of the fixed block, the clamping block is located directly above the support block, and a gap is left between the lower surface of the clamping block and the upper surface of the support block.

[0010] As a further improvement of the utility model, a connecting plate is fixedly connected to the top of the connecting shaft, a connecting groove is opened on the upper surface of the base near the periphery of the through hole, and the connecting plate is inserted into the interior of the connecting groove.

[0011] As a further improvement of the utility model, a first screw hole is provided on the upper surface of the connecting groove, a first connecting hole is provided on the surface of the connecting plate at a position corresponding to the first screw hole, and a first bolt is inserted between the first connecting hole and the first screw hole.

[0012] As a further improvement of the present invention, a plurality of slots are provided at the edge of the connecting plate, and the positions of the slots correspond one to one with the positions of the positioning slots.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model arranges a longitudinal positioning structure on the base, cooperates with the support block, fixed sleeve, screw, clamping block and nut arranged in the longitudinal positioning structure, so that the lower surface of the flange of the inner housing of the motor can be placed on the support block, and the clamping block is pressed and fixed to the upper surface of the flange by tightening the nut to prevent the inner housing of the motor from moving in the vertical direction when the inner hole is processed. The transverse positioning structure arranged on the base, cooperates with the limit block arranged in the transverse positioning structure and the arc-shaped protrusion integrally formed on the limit block, which can limit the side of the flange to prevent the inner housing of the motor from moving horizontally when the inner hole is processed, thereby ensuring stability during the processing.

[0015] 2. The device limits and fixes the flange end of the thin-walled motor inner housing to ensure the stability of the workpiece during processing. The clamping part avoids contact with the outer wall of the thin-walled motor inner housing, and will not cause deformation of the outer wall of the motor inner housing during disassembly and installation.

[0016] 3. The utility model has a simple structure and is very convenient to assemble. By means of the positioning groove provided on the base, the positioning block can be quickly and accurately installed in the positioning groove, so that the lateral positioning structure can be installed to an accurate position. By means of the second screw hole provided on the base, in cooperation with the second connecting hole provided on the fixing block, the longitudinal positioning mechanism can be accurately and quickly installed above the base. By means of the first connecting hole provided on the connecting plate, in cooperation with the first screw hole provided on the connecting groove, the connecting shaft can be quickly installed on the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the base of the utility model;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the connecting shaft of the utility model;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the positioning block of the utility model;

[0022] Figure 5 This is a schematic diagram of the connection relationship between the base, the connecting shaft and the positioning block of the utility model;

[0023] Figure 6 This is a three-dimensional structural diagram of the limiting structure of the utility model;

[0024] Figure 7 This is a three-dimensional structural diagram of the compacting structure of the utility model;

[0025] Figure 8 This is a schematic diagram of the cross-sectional structure of the compacting structure of the utility model;

[0026] Fig. 9 This is a schematic diagram of the utility model when clamping the inner shell of the motor.

[0027] In the figure: 1. base; 2. through hole; 3. connecting groove; 4. first screw hole; 5. positioning groove; 6. second screw hole; 7. connecting shaft; 8. connecting plate; 9. slot; 10. first connecting hole; 11. positioning block; 12. limiting block; 1201, arc-shaped protrusion; 13. fixing block; 14. second connecting hole; 15. supporting block; 16. fixing sleeve; 17. screw; 18. clamping block; 19. nut. DETAILED DESCRIPTION

[0028] The following will disclose multiple embodiments of the utility model with diagrams. For the purpose of clear description, many physical details will be described together in the following description. However, it should be understood that these physical details should not be used to limit the utility model. In other words, in some embodiments of the utility model, these physical details are not necessary. In addition, for the purpose of simplifying the diagram, some conventional structures and components will be depicted in a simple schematic manner in the diagram.

[0029] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] In the description of this technology, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this technology can be understood according to specific circumstances.

[0031] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0032] See also Figure 1-9 The utility model is a fixture for rough turning the inner hole of a thin-walled motor inner shell, comprising a base 1, a through hole 2 is opened in the center of the base 1, a connecting shaft 7 is fixedly connected inside the through hole 2, a plurality of positioning grooves 5 are opened at the edge of the upper surface of the base 1, a transverse positioning structure is installed inside the positioning groove 5, and a plurality of longitudinal positioning structures are also fixedly connected to the edge of the upper surface of the base 1, the plurality of longitudinal positioning structures are respectively located between two adjacent transverse positioning structures, and a workpiece placement area is formed between the plurality of transverse positioning structures and the longitudinal positioning structures.

[0033] See also Figure 1 In a preferred embodiment, the number of the above-mentioned positioning grooves 5 is three, and the three positioning grooves 5 are equidistantly distributed in a ring shape. There are also three transverse positioning structures and three longitudinal positioning structures respectively, and the transverse positioning structures and the longitudinal positioning structures are staggered.

[0034] In this embodiment, the lateral positioning structure includes a positioning block 11 and a limit block 12. The positioning block 11 is fixedly connected to the inside of the positioning groove 5. The limit block 12 is fixedly connected to the upper surface of the positioning block 11 by bolts. The side of the limit block 12 is an "L"-shaped structure, and the side of the limit block 12 close to the center of the base 1 is integrally formed with an arc-shaped protrusion 1201.

[0035] It should be noted that the installation position of the lateral positioning structure is determined by the diameter of the workpiece flange. According to the diameter of the workpiece flange, when the thin-walled motor inner housing is placed in the workpiece placement area, the surfaces of the three arc-shaped protrusions 1201 can just fit into the side of the flange, thereby achieving a limiting effect on the flange and preventing the motor inner housing from shifting when processing the inner hole, thereby ensuring stability during the processing.

[0036] In this embodiment, the longitudinal positioning structure includes a fixing block 13, a second screw hole 6 is opened on the upper surface of the base 1 and near the edge, a second connecting hole 14 is opened at the position of the fixing block 13 corresponding to the second threaded hole, a second bolt is inserted between the second connecting hole 14 and the second screw hole 6, a fixing sleeve 16 is fixedly connected to the center of the fixing block 13 near the edge of the base 1, a screw 17 is fixedly connected to the inside of the fixing sleeve 16, the threaded end of the screw 17 extends to the outside of the top of the fixing sleeve 16, a clamping block 18 and a nut 19 are sleeved on the upper end of the screw 17, the nut 19 is located above the clamping block 18, a support block 15 is fixedly connected to the central position of the upper surface of the fixing block 13, the clamping block 18 is located directly above the support block 15, and a gap is left between the lower surface of the clamping block 18 and the upper surface of the support block 15.

[0037] Through the above technical solution, the lower surface of the flange of the motor inner housing can be placed on the support block 15, and by tightening the nut 19, the clamping block 18 can press and fix the upper surface of the flange to prevent the motor inner housing from moving in the vertical direction when the inner hole is processed.

[0038] The device ensures the stability of the workpiece during processing by limiting and fixing the flange end of the thin-walled motor inner shell. The clamping part avoids contact with the outer wall of the thin-walled motor inner shell, and the outer wall of the motor inner shell will not be deformed during disassembly and installation.

[0039] like Fig. 9As shown, when the device is used to fix the inner casing of a thin-walled motor, firstly, each clamping block 18 is rotated so that the clamping block 18 is tilted to the side so that the top of the support block 15 is exposed, and then the staff places the flange end of the inner casing of the thin-walled motor above the three support blocks 15, and makes the arc-shaped protrusion 1201 on the side of the limit block 12 press against the side of the flange end, and then rotates the clamping block 18 to the top of the flange end, and then rotates the nut 19 so that the nut 19 presses the clamping block 18 downward until the clamping block 18 presses the flange end, thereby completing the fixation of the inner casing of the thin-walled motor.

[0040] In this embodiment, in order to facilitate the fixation between the connecting shaft 7 and the base 1, a connecting plate 8 is fixedly connected to the top of the connecting shaft 7, a connecting groove 3 is opened on the upper surface of the base 1 and near the position around the through hole 2, the connecting plate 8 is inserted into the inside of the connecting groove 3, a first screw hole 4 is opened on the upper surface of the connecting groove 3, a first connecting hole 10 is opened on the surface of the connecting plate 8 at a position corresponding to the first screw hole 4, and a first bolt is inserted between the first connecting hole 10 and the first screw hole 4.

[0041] In some other embodiments, three slots 9 are provided at the edge of the connecting plate 8 , and the positions of the slots 9 correspond one-to-one to the positions of the positioning slots 5 . The arrangement of the slots 9 provides sufficient space for the installation of the positioning block 11 .

[0042] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A fixture for rough turning the inner hole of a thin-walled motor inner housing, comprising a base (1), characterized in that: A through hole (2) is provided in the center of the base (1), and a connecting shaft (7) is fixedly connected inside the through hole (2); A plurality of positioning grooves (5) are provided at the edge of the upper surface of the base (1), and a transverse positioning structure is installed inside the positioning groove (5); A plurality of longitudinal positioning structures are also fixedly connected to the edge of the upper surface of the base (1), and the plurality of longitudinal positioning structures are respectively located between two adjacent transverse positioning structures; A workpiece placement area is formed between the plurality of transverse positioning structures and the longitudinal positioning structures.

2. A fixture for rough turning the inner hole of a thin-walled motor inner housing according to claim 1, characterized in that: The transverse positioning structure comprises a positioning block (11) and a limiting block (12); the positioning block (11) is fixedly connected to the inside of the positioning groove (5); and the limiting block (12) is fixedly connected to the upper surface of the positioning block (11) by means of bolts.

3. A fixture for rough turning inner holes of thin-walled motor inner housing according to claim 2, characterized in that: The side surface of the limit block (12) is an "L"-shaped structure, and a curved protrusion (1201) is integrally formed on one side of the limit block (12) close to the center of the base (1).

4. The jig for rough turning the inner hole of a thin-walled motor inner housing according to claim 1, characterized in that: The longitudinal positioning structure comprises a fixing block (13), a second screw hole (6) is provided on the upper surface of the base (1) and at a position close to the edge, a second connecting hole (14) is provided on the fixing block (13) at a position corresponding to the second screw hole, and a second bolt is inserted between the second connecting hole (14) and the second screw hole (6).

5. A fixture for rough turning inner holes of thin-walled motor inner housing according to claim 4, characterized in that: A fixing sleeve (16) is fixedly connected to the center of the fixing block (13) near the edge of the base (1), and a screw (17) is fixedly connected to the inside of the fixing sleeve (16). The threaded end of the screw (17) extends beyond the top of the fixing sleeve (16). A clamping block (18) and a nut (19) are sleeved on the upper end of the screw (17), and the nut (19) is located above the clamping block (18).

6. A fixture for rough turning the inner hole of a thin-walled motor inner housing according to claim 5, characterized in that: A support block (15) is fixedly connected to the central position of the upper surface of the fixed block (13); the pressing block (18) is located directly above the support block (15); and a gap is left between the lower surface of the pressing block (18) and the upper surface of the support block (15).

7. The jig for rough turning the inner hole of a thin-walled motor inner housing according to claim 1, characterized in that: A connecting plate (8) is fixedly connected to the top of the connecting shaft (7), a connecting groove (3) is provided on the upper surface of the base (1) near the periphery of the through hole (2), and the connecting plate (8) is inserted into the interior of the connecting groove (3).

8. The jig for rough turning the inner hole of a thin-walled motor inner housing according to claim 7, characterized in that: A first screw hole (4) is provided on the upper surface of the connecting groove (3), a first connecting hole (10) is provided on the surface of the connecting plate (8) at a position corresponding to the first screw hole (4), and a first bolt is inserted between the first connecting hole (10) and the first screw hole (4).

9. The jig for rough turning the inner hole of a thin-walled motor inner housing according to claim 7, characterized in that: A plurality of slots (9) are provided at the edge of the connecting plate (8), and the positions of the slots (9) correspond one to one with the positions of the positioning slots (5).

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