End cap processing clamping device

Abstract

The present invention provides an end cap processing clamping device, comprising an annular base plate, a hole connected to a machine tool is provided on the annular base plate, end face positioning sliders are arranged at intervals in the circumferential direction of the annular base plate, the end face positioning sliders are adjusted along the radial displacement of the annular base plate, the inner end and coplanar limiting surfaces of each end face positioning slider are perpendicular to the axial direction of the annular base plate, and a radial clamping unit is also provided on the annular base plate between adjacent end face positioning sliders, the moving path of the radial clamping unit is perpendicular to the axial direction of the annular base plate and is arranged in close proximity and staggered to the limiting surface in the axial direction; the pressing inner end of the clamping unit can be displaced inwardly to extend into the inner hole area of ​​the annular base plate, and the distance from the limiting surface to the center of the annular base plate when each end face positioning slider is displaced to the inner position is less than the distance from the pressing inner end to the center of the annular base plate when the clamping unit is displaced to the inner position. The end cap can be clamped once to complete the processing of the assembly part, so the processing accuracy can be ensured and the processing efficiency is improved.

Description

Technical Field

[0001] The invention relates to a tool for machining parts of a motor, in particular to a new clamping tool for clamping and positioning a motor end cover so as to process the motor end cover. Background Art

[0002] As an important part of the motor housing, the motor end cover must be assembled at the end of the machine base for exterior decoration, and also for the rotor shaft to pass through and bear the role of the bearing seat, which is the support of the bearing component. Not only the bearing hole part, but also the inner end face and the flange on the edge of the inner end face must be processed, and there are strict shape and position tolerance requirements between them. In the existing technology, the face processing is mostly carried out by separate machine tools. The parallelism of the two sides of the workpiece and the coaxiality of the flange part and the center hole have large deviations, and the accuracy is not high. This is an unavoidable problem for clamping with traditional three-jaw chucks on existing machine tools. Summary of the invention

[0003] The purpose of the present invention is to provide an end cover processing clamping device, which can complete the processing of the center axis hole and the end face through one clamping.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an end cover processing clamping device, characterized in that: it includes an annular base plate, a hole connected to a machine tool is provided on the annular base plate, end face positioning sliders are arranged at intervals in the circumferential direction of the annular base plate, the end face positioning sliders are adjusted along the radial displacement of the annular base plate, the inner end and coplanar limiting surfaces of each end face positioning slider are perpendicular to the axial direction of the annular base plate, and a radial clamping unit is also arranged on the annular base plate between adjacent end face positioning sliders, the moving path of the radial clamping unit is perpendicular to the axial direction of the annular base plate and is closely adjacent to and staggered in the axial direction of the limiting surface; the pressing inner end of the clamping unit can be displaced inwardly to extend into the inner hole area of ​​the annular base plate, and when each end face positioning slider is displaced to the inner position, the distance from the limiting surface to the center of the annular base plate is smaller than the distance from the pressing inner end to the center of the annular base plate when the clamping unit is displaced to the inner position.

[0005] In the above technical scheme, an annular substrate is provided, and an end face positioning slider and a radial clamping unit are provided on the annular substrate. First, the end face positioning slider is used to position the end face of the motor end cover or similar components to be processed, and then the radial clamping unit is used to radially clamp the periphery of the motor end cover to be processed. In this way, the end face and the middle part of the motor end cover to be processed can be completely exposed, and the end face and the rotor hole can be processed by the tool of the machine tool. Since the processing of the end face and the rotor hole does not require the end cover to be turned and re-clamped, the processing of the assembly part can be completed by one clamping of the end cover, so the processing accuracy can be ensured and the processing efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 , 3They are respectively front views of the components of the present invention being disassembled;

[0007] Figure 2 , 5 They are respectively three-dimensional views of the components of the present invention being disassembled;

[0008] Figure 4 yes Figure 1 AOA section view in;

[0009] Figure 6 yes Figure 2 The enlarged view of the K part in FIG.

[0010] Figure 7 yes Figure 5 The enlarged view of the G section in the figure;

[0011] Figure 8 yes Figure 2 The enlarged view of the H part in FIG.

[0012] Fig. 9 It is the structural diagram of the end cap to be processed;

[0013] Fig.10 It is a schematic diagram of the working state structure of the present invention. DETAILED DESCRIPTION

[0014] See also Fig. 9 As shown, the workpiece to be processed is a motor end cover 1, which has a basic disc shape with a through hole 2 in the middle. On the left side of the figure, there is an assembly joint surface 3 that cooperates with the end face of the base, and a flange 4 that is plugged into the port of the base. The outer circumferential surface 5 of the flange 4 has strict coaxiality requirements between the through hole 2 and the outer circumferential surface 5, and strict verticality requirements between the through hole 2, the outer circumferential surface 5 and the assembly joint surface 3. It is extremely important to ensure the above-mentioned position accuracy. Therefore, when processing the above-mentioned parts, it is inevitably difficult to ensure the processing accuracy requirements by clamping twice or more times.

[0015] The technical solution of the tooling device provided by the present invention is described in detail below.

[0016] Combined with Figure 1 , 210. The end cover processing clamping device comprises an annular base plate 10, on which a hole 11 connected to a machine tool is arranged, and end face positioning sliders 20 are arranged at intervals in the circumferential direction of the annular base plate 10, and the end face positioning sliders 20 are adjusted along the radial displacement of the annular base plate 10, and the limiting surfaces 21 at the inner ends and coplanar of each end face positioning slider 20 are perpendicular to the axial direction of the annular base plate 10, and radial clamping units are also arranged on the annular base plate 10 between adjacent end face positioning sliders 20, and the moving path of the radial clamping unit is perpendicular to the axial direction of the annular base plate 10 and is closely adjacent to and staggered with the limiting surfaces 21 in the axial direction; the pressing inner end of the clamping unit can be displaced inwardly to extend into the inner hole 10a area of ​​the annular base plate 10, and when each end face positioning slider 20 is displaced to the inner position, the distance r from the limiting surface 21 to the center of the annular base plate 10 is less than the distance R from the pressing inner end to the center of the annular base plate 10 when the clamping unit is displaced to the inner position.

[0017] In the above scheme, the hole 11 provided on the annular substrate 10 is used to connect with the machine tool, which can be understood as being connected to the turntable of the machine tool spindle; the end surface positioning slider 20 has a displacement characteristic in the radial direction of the annular substrate 10. The example given in the figure is three end surface positioning sliders 20, and the limiting surfaces 21 thereon are arranged in the same plane, so that when the motor end cover 1 to be processed is placed in the inner hole 10a area of ​​the annular substrate 10, the assembly joint surface 3 can be abutted against the limiting surface 21, so that the axial end surface position of the motor end cover 1 to be processed is limited, and due to the radial The moving path of the clamping unit is perpendicular to the axial direction of the annular substrate 10 and is adjacent to and staggered with the limiting surface 21 in the axial direction. When the radial clamping unit moves radially inward, it can face the edge circumference 6 of the end cover. When the radial clamping unit radially clamps the edge circumference 6, the end face positioning slider 20 is retracted to the area outside the edge circumference 6. In this way, the through hole 2, the external circumference 5 and the assembly joint surface 3 are completely exposed. The tool can reach all the parts to be processed with size and position accuracy requirements. The fine processing can be completed by one clamping, and it is natural to ensure the processing accuracy.

[0018] As a preferred solution, the annular ring substrate 10 is provided with a guide groove or hole 12, the length direction of which is the radial direction of the annular substrate 10, the end surface positioning slider 20 is located in the guide groove or hole 12 and a sliding guide fit is formed between the end surface positioning slider 20 and the guide groove or hole 12. The locking unit is locked between the end surface positioning slider 20 and the guide groove or hole 12. Figure 5 , 6 .

[0019] The above preferred solution is the basic solution for realizing the radial displacement of the end face positioning slider 20, that is, the guide groove or hole 12 is set to guide the radial displacement of the end face positioning slider 20. When the position is in the inner position or the outer position, it is locked by the locking unit to prevent its position from moving arbitrarily.

[0020] As a preferred embodiment of the above scheme, Figure 5 , 6 As shown, the guide groove 12 on one side of the plate surface of the annular substrate 10 is a square cross-section groove, the end surface positioning slider 20 is accommodated in the guide groove 12, the cross-sectional profile of the end surface positioning slider 20 is consistent with the groove cavity shape of the guide groove 12, the middle of the end surface positioning slider 20 has a strip hole 22 and the hole core direction is perpendicular to the plate surface of the annular substrate 10, the strip hole 22 is a step hole and the hole length direction is consistent with the radial direction of the annular substrate 10, the bottom of the guide groove 12 has a threaded hole 121, and at the same time, Figure 4 The bolt head of the locking screw 122 connected to the threaded hole 121 is located at the large-diameter section 221 of the stepped hole of the strip hole 22 .

[0021] The above scheme provides a specific limiting method for guiding the end face positioning slider 20, that is, a guide groove 12 is set to cooperate with the end face positioning slider 20, and the guide groove 12 adopts a groove structure for easy processing, accurate positioning and guiding; the strip hole 22 realizes the basic purpose of radial displacement, and the strip hole 22 is designed as a step hole, which can sink the bolt head of the locking screw 122 to avoid it from protruding, which provides a basis for the implementation of the following preferred scheme.

[0022] A cover plate 30 is provided at the notch of the guide groove 11, and the cover plate 30 is placed on the inner notch of the guide groove 11. A locking screw 31 is provided at the threaded hole on the cover plate 30, and the inner end of the locking screw 31 presses against the end surface positioning slider 20 outside the limit surface 21. Figure 1 , 2 、4.

[0023] The setting of the above-mentioned cover plate 30 further plays a limiting role on the end face positioning slider 20. After the cover plate 30 is added, the guide groove 11 and the cover plate 30 cooperate to actually form a guide hole with a square cross-section. The cross-section of the end face positioning slider 20 that matches the hole is processed into a corresponding shape and size, which is convenient and can ensure accuracy, thereby ensuring the stability of the position of the end face positioning slider 20. Combined with the locking of the locking screw 31, the positioning accuracy of its upper limit surface 21 is ensured.

[0024] Another important part of the present invention is the radial clamping unit. Specifically, the radial clamping unit includes a guide groove or guide hole 13 arranged along a side plate surface of the annular substrate 10, and its guiding direction is the radial direction of the annular substrate 10. The radial clamping unit includes a pressure plate 40 located in the guide groove or guide hole 13 and a sliding fit is formed between the two. When the pressure plate 40 moves inward, the inner end of the pressure plate extends to the inner hole 10a area of ​​the annular substrate 10.

[0025] In the above scheme, when the pressing plate 40 moves inward, the pressing inner end extends to the inner hole 10a area of ​​the annular base plate 10, which ensures that it can press against the edge circumference 6 of the motor end cover 1 to be processed to clamp it, and the area within the edge circumference 6 has no interfering parts, so that the tool can smoothly reach the assembly joint surface 3, the flange 4 and the outer circumference 5 to be processed. In the example shown in the figure, three pressing plates 40 are provided, which are evenly spaced in the circumferential direction. Four can also be arranged according to the specific specifications of the motor end cover 1 to be processed.

[0026] When clamping the motor end cover 1 to be processed, the first step is to position its end face. Therefore, other components should be in an avoidance position when the motor end cover 1 to be processed is put into place. In addition, the clamping operation should be performed immediately after the end face is positioned. For this purpose, the present invention provides the following preferred scheme, that is, the guide groove 13 on the annular substrate 10 includes a circumferential groove 131 and a radial groove 132 arranged in an intersecting manner, and the inner end of the radial groove 132 extends through the hole wall of the inner hole 10a of the annular substrate 10. The pressure plate 40 includes a T-shaped plate composed of a wing plate 41 and a web plate 42. The wing plate 41 and the web plate 42 are respectively accommodated in the circumferential groove 131 and the radial groove 132. The inner plate side of the compression plate 50 and the outer plate side of the wing plate 41 form an inclined surface match, such as Figure 4 , 8 As shown in FIG. 10 , when the compression plate 50 moves toward the bottom of the groove, the pressing plate 40 is pressed to move toward the center of the annular substrate 10 . Springs 60 are arranged in the circumferential grooves 131 on both sides of the web 42 . The springs 60 provide elastic force to drive the compression plate 50 to move away from the center of the annular substrate 10 .

[0027] In the above scheme, the scheme of the guide groove 13 composed of the intersecting circumferential groove 131 and the radial groove 132 not only ensures the guidance of the radial displacement of the pressure plate 40, but also makes the two sides of the web 42 form a space for accommodating the spring 60. The spring 60 can be selected as a compression spring, one end of which is against the inner groove wall of the circumferential groove 131 and the other end is against the wing plate 41. The spring 60 provides elastic force to drive the pressure plate 40 to have a tendency to move radially outward, and the inner plate edge of the compression plate 50 and the outer plate edge of the wing plate 41 form an inclined surface. When the compression plate 50 moves toward the bottom of the groove, the pressure plate 40 is squeezed to move toward the center of the annular substrate 10. Therefore, the elastic force provided by the spring 60 also ensures a stable combination state between the various components. The clamping operation is very simple, that is, the compression plate 50 moves toward the bottom of the groove, and the direction of the force converted by the mutually cooperating inclined surfaces can push the pressure plate 40 to compress the spring 60 while performing a clamping action radially inward.

[0028] A slot cover plate 70 is disposed at the slot opening where the circumferential slot 131 and the radial slot 132 meet, and the compression plate 50 is located outside the outer plate edge of the slot cover plate 70 .

[0029] The purpose of adding the groove cover plate 70 is to prevent the spring 60 from falling off and cooperate with the circumferential groove 131 to form a posture constraint space for the deformation of the spring 60. At the same time, it cooperates with the radial groove 132 to form a guide in the form of a guide hole to enhance the accuracy and stability of the radial guide.

[0030] A more preferred solution is that the guide groove 13 includes a circumferential groove 131 and a radial groove 132 arranged to intersect, the radial groove 132 includes a radial outer groove 132a extending to the outside of the circumferential groove 131, the radial groove 132, the radial outer groove 132a and the circumferential groove 131 form a cross groove, the main body of the compression plate 50 is located in the radial outer groove 132a and the circumferential sides form a limited sliding fit with the two side groove walls of the radial outer groove 132a, a threaded hole 132b is provided at the bottom of the radial outer groove 132a, a through hole is provided in the middle of the compression plate 50, and the compression bolt 80 is connected to the threaded hole 132b at the bottom of the radial outer groove 132a through the through hole in the middle of the compression plate 50.

[0031] In the above scheme, a radial outer groove 132a is further extended outside the circumferential groove 131, which does not increase the difficulty during processing, and provides layout space and limit constraints for the layout of the squeeze plate 50, and the size between the two circumferential sides of the squeeze plate 50 can also be smaller, and its material and processing costs can be reduced. The above preferred scheme provides a convenient clamping operation process, that is, screwing the squeeze bolt 80 can achieve the displacement of the squeeze plate 50 to push the radial displacement of the pressure plate 40 to clamp the workpiece.

[0032] In addition, there is a recess 71 in the middle of the outer plate surface of the groove cover plate 70, and the inner side edge and the inner ends of the two side edges of the compression plate 50 are located in the recess 71 and form a circumferential and radial inward limiting fit with each other, that is, providing additional guiding constraints for the displacement of the compression plate 50.

[0033] Since the working stroke of the compression plate 50 is located perpendicular to the plate surface direction of the annular substrate 10, in order to increase or improve the displacement stroke of the compression plate 50, it can certainly be achieved by increasing the thickness of the annular substrate 10 and then processing a deeper guide groove 13. This will inevitably lead to an increase in the material used for the annular substrate 10, and the weight of the device will inevitably increase significantly.

[0034] The solution of the present invention is to make full use of the slot cover plate 70, so that it can also serve another purpose, that is, a square notch is opened in the middle of its outer edge to form a recessed portion 71, and the recessed portion 71 is engaged with the inner edge of the plate body of the squeeze plate 50, and the squeeze plate 50 is restrained when it moves away from the bottom of the guide groove 13 to the outside of the slot. The stroke of the squeeze plate 50 is increased, and as a result, the stroke of the pressure plate 40 is improved and increased, and the same tooling can realize the processing of end caps of multiple sizes.

[0035] In addition, the guide groove 12 and the guide groove 13 are located on the same side plate of the annular base plate 10. This solution can improve the processing efficiency and accuracy of the processing device itself. At the same time, the operating positions for implementing end face positioning and radial clamping are also on the same side, which facilitates the processing of the end cover.

Claims

1. An end cap processing clamping device, characterized in that: The invention comprises an annular base plate (10), the annular base plate (10) has a hole (11) connected to a machine tool, end surface positioning sliders (20) are arranged at intervals in the circumferential direction of the annular base plate (10), the end surface positioning sliders (20) are adjusted along the radial displacement of the annular base plate (10), the inner end and coplanar limiting surfaces (21) of each end surface positioning slider (20) are perpendicular to the axial direction of the annular base plate (10), and the annular base plate (10) between adjacent end surface positioning sliders (20) is also provided with a radial clamping unit The moving path of the radial clamping unit is perpendicular to the axial direction of the annular substrate (10) and is closely adjacent to the limiting surface (21) in the axial direction of the annular substrate (10) and is arranged in a staggered manner; the pressing inner end of the clamping unit can be displaced inwardly to extend into the inner hole (10a) region of the annular substrate (10); when each end surface positioning slider (20) is displaced to the inner position, the distance from the inner end of the limiting surface (21) to the center of the annular substrate (10) is smaller than the distance from the pressing inner end to the center of the annular substrate (10) when the clamping unit is displaced to the inner position; The radial clamping unit comprises a guide groove or a guide hole (13) arranged on a side plate surface of the annular substrate (10), wherein the guide direction is the radial direction of the annular substrate (10); the radial clamping unit comprises a pressing plate (40) located in the guide groove or the guide hole (13), and the two form a sliding fit, and when the pressing plate (40) moves inward, the pressing inner end extends into the inner hole (10a) region of the annular substrate (10); The guide groove (13) on the annular substrate (10) comprises a circumferential groove (131) and a radial groove (132) arranged to intersect each other, the inner end of the radial groove (132) extending through the hole wall of the inner hole (10a) of the annular substrate (10), the pressing plate (40) comprising a T-shaped plate composed of a wing plate (41) and a web plate (42), the wing plate (41) and the web plate (42) being respectively and correspondingly accommodated in the circumferential groove (131) and the radial groove (132) area, the inner plate edge of the compression plate (50) and the outer plate edge of the wing plate (41) forming an inclined surface match, when the compression plate (50) moves toward the groove bottom, the compression plate (40) is pressed to move toward the center of the annular substrate (10), and springs (60) are arranged in the circumferential grooves (131) on both sides of the web plate (42), and the springs (60) provide elastic force to drive the compression plate (50) to move away from the center of the annular substrate (10); The radial groove (132) includes a radial outer groove (132a) extending to the outside of the circumferential groove (131); the radial groove (132), the radial outer groove (132a) and the circumferential groove (131) form a cross-shaped groove; the main body of the compression plate (50) is located in the radial outer groove (132a) and the two circumferential side edges form a limited sliding fit with the two side groove walls of the radial outer groove (132a); A slot cover plate (70) is provided at the slot opening where the circumferential slot (131) and the radial slot (132) meet, and the compression plate (50) is located outside the outer plate edge of the slot cover plate (70); a recess (71) is provided in the middle of the outer plate surface of the slot cover plate (70), and the inner side edge and the inner ends of the two side edges of the compression plate (50) are located in the recess (71) and form a circumferential and radial inward limiting fit with each other.

2. The end cap processing clamping device according to claim 1, characterized in that: A guide groove or hole (12) is provided on the annular base plate (10), the length direction of which is the radial direction of the annular base plate (10); the end surface positioning slider (20) is located in the guide groove or hole (12) and a sliding guide fit is formed between the two; the end surface positioning slider (20) and the guide groove or hole (12) are locked by a locking unit.

3. The end cap processing clamping device according to claim 2, characterized in that: The guide groove (12) on one side plate surface of the annular substrate (10) is a square cross-section groove, the end surface positioning slider (20) is accommodated in the guide groove (12), the cross-sectional profile of the end surface positioning slider (20) is consistent with the groove cavity shape of the guide groove (12), a strip hole (22) is provided in the middle of the end surface positioning slider (20), and the hole core direction is perpendicular to the plate surface of the annular substrate (10), the strip hole (22) is a step hole, and the hole length direction is consistent with the radial direction of the annular substrate (10), the guide groove (12) has a threaded hole (121) at the bottom of the groove, and the bolt head of the locking screw (122) connected to the threaded hole (121) is located at the large aperture section (221) of the step hole of the strip hole (22).

4. The end cap processing clamping device according to claim 3, characterized in that: A cover plate (30) is provided at the notch of the guide groove (12), and the cover plate (30) is placed on the inner notch of the guide groove (12). A locking screw (31) is provided at the threaded hole on the cover plate (30), and the inner end of the locking screw (31) is pressed against the end surface positioning slider (20) outside the limiting surface (21).

5. The end cap processing clamping device according to claim 1, characterized in that: A threaded hole (132 b) is provided at the bottom of the radial outer groove (132 a), a through hole is provided in the middle of the compression plate (50), and the compression bolt (80) is connected to the threaded hole (132 b) at the bottom of the radial outer groove (132 a) through the through hole in the middle of the compression plate (50).

6. The end cap processing clamping device according to claim 2 or 3, characterized in that: The guide groove (12) and the guide groove (13) are located on the same side surface of the annular base plate (10).

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