Clamp for machining inner circular surface of motor shell

Abstract

The utility model discloses a clamp for machining the inner circle face of a motor shell. The clamp comprises a clamp support, a positioning assembly, a detection supporting assembly, a first hydraulic clamping assembly, a second hydraulic clamping assembly and an oil way connecting joint. According to the clamp for machining the inner circle face of the motor shell, the hydraulic channel is laid in the clamp support, an oil pipe communicated with the outside is not used, the surface of the clamp is concise, the situation that oil pipe winding influences the machining condition of a machined product is avoided, and a cutter can machine the inner circle face from the second face of the vertical plate conveniently through the cutter feeding hole; the positioning assembly guarantees accurate positioning of the motor shell, the detection supporting assembly can support the motor shell and detect whether the motor shell is clamped or not, the first hydraulic clamping assembly clamps and fixes the periphery of the inner circle face so that large holes can be conveniently machined, the second hydraulic clamping assembly clamps and fixes the edge of a kidney-shaped hole, and the kidney-shaped hole can be conveniently machined through a cutter.

Description

Technical Field

[0001] The utility model relates to the technical field of fixtures and tools, in particular to a fixture for machining the inner circular surface of a motor housing. Background Art

[0002] With the rise of new energy vehicles in recent years, many traditional auto parts have been gradually eliminated and replaced by new parts in new energy vehicles, among which the most representative part is the motor housing. The motor housing has a complex structure and many processing steps. When processing on the machining center, the motor housing needs to be fixed with a corresponding fixture.

[0003] like Figure 1 The motor housing shown is a brand new part. A large circular hole is opened on the motor housing, and a convex circle is set at the bottom of the large circular hole on the outer circumference. The inner circular surface of the large circular hole is the main processing part, and the processing accuracy is high, and both sides need to be processed. A waist-shaped hole structure is also opened on one side of the large circular hole on the motor housing. Both the large circular hole and the waist-shaped hole need to be clamped and fixed to ensure their processing accuracy. For this reason, a fixture is designed for positioning and fixing the motor housing to ensure its processing quality. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a motor housing inner circular surface machining fixture, fix the motor housing on the fixture, and facilitate the machining of large circular holes and waist-shaped holes.

[0005] The utility model provides a motor housing inner surface machining fixture, comprising:

[0006] The fixture bracket has a tool feed hole corresponding to the large circular hole of the motor housing, and a hydraulic channel and a gas channel are arranged inside the fixture bracket;

[0007] A positioning assembly is fixedly arranged on the fixture bracket and is located at the periphery of the feed hole, and is used to position the motor housing;

[0008] The detection support assembly is fixedly arranged on the fixture bracket, located at the periphery of the feed hole, and communicated with the gas channel, and is used to support the motor housing and detect whether the positioning of the motor housing is accurate;

[0009] A first hydraulic clamping assembly is provided on the fixture bracket, is located at the periphery of the feed hole, is communicated with the hydraulic channel, and is used to clamp and fix the motor housing at the periphery of the large circular hole;

[0010] The second hydraulic clamping assembly is arranged on the clamp bracket, located on one side of the feed hole, and communicated with the hydraulic channel, and is used to clamp and fix the outer edge of the motor housing located at the waist-shaped hole;

[0011] The oil circuit connection joint is fixedly arranged on the fixture bracket, is connected with the hydraulic channel, and is used for connecting with an external hydraulic pump.

[0012] Furthermore, the fixture bracket includes a bottom plate and a vertical plate fixedly arranged on the top surface of the bottom plate, and a feed hole is opened on the vertical plate.

[0013] Further, the hydraulic channel includes an oil inlet circuit and an oil return circuit, and an oil filter is installed at the inlet end of the oil inlet circuit;

[0014] The oil circuit connection joint comprises an oil inlet joint connected to the oil inlet circuit and an oil return joint connected to the oil return circuit. Differentiation marks are provided on the oil inlet joint and the oil return joint.

[0015] Furthermore, the gas channel is connected to an external air compression pump, and the gas channel is connected to a pressure sensor.

[0016] Furthermore, the clamp bracket is equipped with a lifting lug.

[0017] Furthermore, the positioning assembly includes a supporting positioning pin and a limiting positioning pin; the supporting positioning pin is fixedly arranged on the upright plate at the periphery of the feed hole, and is used for positioning and supporting the motor housing; the limiting positioning pin is fixedly arranged on the upright plate at the periphery of the feed hole, and is used for limiting and positioning at least three turning points of the outer periphery of the motor housing.

[0018] Furthermore, the detection support assembly includes a plurality of support seats, which are fixedly arranged on the fixture bracket at the periphery of the feed hole, and the support surface of the support seat is provided with a seat hole, which is connected to the gas channel.

[0019] Furthermore, the first hydraulic clamping assembly includes a first rotating cylinder, a first pressure plate and a first pressure plate support. The first pressure plate support is arranged on the outer shell of the first rotating cylinder. One end of the first pressure plate is rotatably connected to the hydraulic output shaft of the first rotating cylinder, and the middle part of the first pressure plate is rotatably connected to the first pressure plate support.

[0020] Furthermore, the second hydraulic clamping assembly includes a second rotating cylinder, a second pressure plate and a second pressure plate support. The second pressure plate support is arranged on the outer shell of the second rotating cylinder. One end of the second pressure plate is rotatably connected to the hydraulic output shaft of the second rotating cylinder, and the middle part of the second pressure plate is rotatably connected to the second pressure plate support.

[0021] Compared with the prior art, the beneficial effects of the utility model are:

[0022] (1) The fixture of the utility model is provided with a positioning component, a detection support component, a first hydraulic clamping component and a second hydraulic clamping component. When machining the large circular hole and the waist-shaped hole of the motor housing, first place it on the detection support component and position it by the positioning component; then clamp and fix the edge of the motor housing located on the outer periphery of the large circular hole by the first hydraulic clamping component, and clamp and fix the edge of the motor housing located on the outer side of the waist-shaped hole by the second hydraulic clamping component, thereby ensuring the stability of the part of the motor housing to be processed. After the motor housing is fixed, connect the gas channel to the external air compression pump, inject high-pressure air through the air compression pump, and check whether there is gas leakage between the detection support component and the motor housing. If there is no gas leakage, the positioning is accurate, and if there is, it needs to be reinstalled. The fixture of the present application has accurate positioning and stable fixing, thereby ensuring the processing quality of the inner circular surface of the motor housing.

[0023] (2) A tool feed hole is provided on the fixture bracket, which facilitates the tool to machine the inner surface of the large circular hole from both sides, ensuring the machining accuracy of the large circular hole. The machining is completed in one step without the need for secondary clamping, thereby improving the machining efficiency.

[0024] (3) A hydraulic channel is provided inside the fixture bracket, replacing the external oil pipe, making the fixture surface simple and avoiding the entanglement of the oil pipe affecting the processing of the processed product.

[0025] It should be understood that the contents described in the utility model summary are not intended to limit the key or important features of the embodiments of the utility model, nor are they intended to limit the scope of the utility model. Other features of the utility model will become easy to understand through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0027] Figure 1 A schematic diagram of the structure of the motor housing inner surface machining fixture clamping the motor housing;

[0028] Figure 2 It is a schematic diagram of the structure of the fixture for machining the inner circular surface of the motor housing;

[0029] Figure 3 It is a schematic diagram of the structure of the detection support assembly;

[0030] Figure 4 is a schematic diagram of the structure of the first hydraulic clamping assembly and the second hydraulic clamping assembly;

[0031] Numbers in the figure: 1, fixture bracket; 2, positioning assembly; 3, detection support assembly; 4, first hydraulic clamping assembly; 5, second hydraulic clamping assembly; 6, oil circuit connection joint; 7, motor housing;

[0032] 11. Knife feed hole; 12. Gas channel; 13. Bottom plate; 14. Vertical plate; 15. Lifting lug;

[0033] 21. Support positioning pin; 22. Limit positioning pin;

[0034] 31. Support seat; 32. Seat hole;

[0035] 41. first rotary cylinder; 42. first pressing plate; 43. first pressing plate support;

[0036] 51. second rotary cylinder; 52. second pressing plate; 83. second pressing plate support;

[0037] 71. Large round hole; 72. Waist-shaped hole. DETAILED DESCRIPTION

[0038] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings.

[0039] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0040] Please refer to Figure 1 to Figure 4 The embodiment of the utility model provides a motor housing inner surface machining fixture, comprising:

[0041] The fixture bracket 1 has a feed hole 11 corresponding to the large circular hole 71 of the motor housing 7, and a hydraulic channel and a gas channel 12 are provided inside the fixture bracket 1;

[0042] The positioning assembly 2 is fixedly mounted on the fixture bracket 1 and is located at the periphery of the feed hole 11, and is used to position the motor housing 7;

[0043] The detection support assembly 3 is fixedly arranged on the fixture bracket 1, located at the periphery of the feed hole 11, and communicated with the gas channel 12, and is used to support the motor housing 7 and detect whether the positioning of the motor housing 7 is accurate;

[0044] The first hydraulic clamping assembly 4 is arranged on the clamp bracket 1, located at the periphery of the feed hole 11, and communicated with the hydraulic channel, and is used to clamp and fix the motor housing 7 at the periphery of the large circular hole 71;

[0045] The second hydraulic clamping assembly 5 is arranged on the clamp bracket 1, located on one side of the feed hole 11, and communicated with the hydraulic channel, and is used to clamp and fix the outer edge of the motor housing 7 located at the waist-shaped hole 72;

[0046] The oil circuit connection joint 6 is fixedly arranged on the clamp bracket 1 and is connected to the hydraulic channel for connecting to an external hydraulic pump.

[0047] In this embodiment, the motor housing 7 is placed on the fixture bracket 1, the positioning assembly 2 positions the motor housing 7, the first hydraulic clamping assembly 4 and the second hydraulic clamping assembly 5 clamp the motor housing 7, the detection support assembly 3 supports and positions the motor housing 7, the oil circuit connection joint 6 is connected to the external hydraulic pump, and the adjustable pressure solenoid valve on the machining center controls the pressure required by the fixture. The tool of the machining center passes through the feed hole 11 from the back of the upright plate 13 to process the large circular hole 71.

[0048] The first hydraulic clamping assembly 4 and the second hydraulic clamping assembly 5 of the new motor housing inner surface machining fixture clamp the motor housing 7, and the detection support assembly 3 detects whether the motor housing 7 is accurately positioned and clamped, thereby improving the machining accuracy and reliability. The absence of an external oil circuit avoids the entanglement of oil pipes that affects the machining of the product, and ensures safe work.

[0049] In a preferred embodiment, if Figure 2 As shown, the fixture bracket 1 includes a base plate 13 and a vertical plate 14 fixedly arranged on the top surface of the base plate 13, so that the fixture bracket 1 is supported stably. A tool feed hole 11 is opened on the vertical plate 14 to facilitate the tool to process the inner circular surface of the large circular hole 71 from the back of the vertical plate.

[0050] In a preferred embodiment, if Figure 2 As shown, the hydraulic channel includes an oil inlet circuit and an oil return circuit, and an oil filter is installed at the inlet end of the oil inlet circuit to prevent the oil circuit from being blocked;

[0051] The oil circuit connection joint includes an oil inlet joint connected to the oil inlet circuit and an oil return joint connected to the oil return circuit. Differentiation marks are provided on the oil inlet joint and the oil return joint to facilitate distinguishing and connecting the oil inlet circuit and the oil return circuit.

[0052] In a preferred embodiment, if Figure 2 As shown, the gas channel 12 is connected to an external air compression pump, and the air compression pump delivers gas to the seat hole 32 through the gas channel 12. The gas channel 12 is connected to a pressure sensor, and the pressure sensor detects the pressure of the gas channel to determine whether the seat hole 32 is leaking.

[0053] In a preferred embodiment, if Figure 1-2 As shown, the fixture bracket 1 is installed with a lifting ear 15 to facilitate the removal of the motor housing inner surface processing fixture.

[0054] In a preferred embodiment, if Figure 1-2 As shown, the positioning assembly 2 includes a supporting positioning pin 21 and a limiting positioning pin 22; the supporting positioning pin 21 is fixedly arranged on the upright plate 14 at the periphery of the feed hole 11, and is used for positioning and supporting the motor housing 7; the limiting positioning pin 22 is fixedly arranged on the upright plate 14 at the periphery of the feed hole 11, and is used for limiting and positioning at least three turning points of the periphery of the motor housing 7.

[0055] In this embodiment, the support positioning pin 21 plays a positioning role on the motor housing 7, limiting the movement and rotation of the motor housing 7 in the plane direction, and the limit positioning pin 22 limits the downward movement of the motor housing, thereby improving the reliability of positioning.

[0056] In a preferred embodiment, if Figure 2-Figure 3 As shown, the detection support assembly 3 includes a plurality of support seats 31, which are fixedly arranged on the fixture bracket 1 at the periphery of the feed hole 11, and a seat hole 32 is opened on the support surface of the support seat 31, and the seat hole 32 is connected to the gas channel 12.

[0057] In this embodiment, the motor housing 7 is placed on the support seat 31. If the seating holes 32 are not leaking, it can be proved that the motor housing 7 is accurately positioned and clamped. If the seating holes 32 are leaking, the motor housing 7 is inaccurately positioned or not clamped, thereby improving the processing stability of the motor housing 7 and improving the processing accuracy.

[0058] In a preferred embodiment, if Figure 4 As shown, the first hydraulic clamping assembly 4 includes a first rotating cylinder 41, a first pressure plate 42 and a first pressure plate support 43. The first pressure plate support 43 is arranged on the outer shell of the first rotating cylinder 41. One end of the first pressure plate 42 is rotatably connected to the hydraulic output shaft of the first rotating cylinder 41, and the middle part of the first pressure plate 42 is rotatably connected to the first pressure plate support 43.

[0059] In this embodiment, the first pressing plate 42 and the first pressing plate support 43 form a lever structure, and when the hydraulic output shaft of the first rotating oil cylinder 41 is extended, the other end of the first pressing plate 42 is pressed down, thereby clamping the edge of the motor housing 7 between the supporting seat 31. The first rotating oil cylinder 41 of the new type is easy to maintain, has a long service life, fast response, and improves work efficiency.

[0060] In a preferred embodiment, if Figure 4As shown, the second hydraulic clamping assembly 5 includes a second rotating cylinder 51, a second pressure plate 52 and a second pressure plate support 53. The second pressure plate support 53 is arranged on the outer shell of the second rotating cylinder 51. One end of the second pressure plate 52 is rotatably connected to the hydraulic output shaft of the second rotating cylinder 51. The middle part of the second pressure plate 52 is rotatably connected to the second pressure plate support 53 to clamp the edge of the waist-shaped hole 72 and cooperate with the first hydraulic clamping assembly 4 to clamp the motor housing 7, thereby improving the reliability of clamping.

[0061] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0062] In the description of this specification, the description of the terms "one embodiment", "some embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0063] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A fixture for machining the inner surface of a motor housing, characterized in that: include: A clamp bracket (1) having a tool feed hole (11) corresponding to the large circular hole (71) of the motor housing (7), and a hydraulic channel and a gas channel (12) are provided inside the clamp bracket (1); A positioning assembly (2) is fixedly mounted on the fixture bracket (1) and is located at the periphery of the feed hole (11) and is used to position the motor housing (7); A detection support assembly (3) is fixedly arranged on the fixture bracket (1), is located at the periphery of the tool feed hole (11), is communicated with the gas channel (12), and is used to support the motor housing (7) and detect whether the positioning of the motor housing (7) is accurate; A first hydraulic clamping assembly (4) is arranged on the clamp support (1), is located at the periphery of the tool feed hole (11), is communicated with the hydraulic channel, and is used to clamp and fix the outer peripheral edge of the motor housing (7) located at the large circular hole (71); A second hydraulic clamping assembly (5) is arranged on the clamp bracket (1), located on one side of the feed hole (11), and communicated with the hydraulic channel, and is used to clamp and fix the outer edge of the motor housing (7) located at the waist-shaped hole (72); An oil circuit connection joint (6) is fixedly arranged on the clamp bracket (1), is connected to the hydraulic channel, and is used for connecting to an external hydraulic pump.

2. The motor housing inner surface machining fixture according to claim 1, characterized in that: The clamp bracket (1) comprises a bottom plate (13) and a vertical plate (14) fixedly arranged on the top surface of the bottom plate (13), and the tool feed hole (11) is provided on the vertical plate (14).

3. The motor housing inner surface machining fixture according to claim 1, characterized in that: The hydraulic channel includes an oil inlet circuit and an oil return circuit, and an oil filter is installed at the inlet end of the oil inlet circuit; The oil circuit connection joint (6) comprises an oil inlet joint connected to the oil inlet circuit and an oil return joint connected to the oil return circuit, and the oil inlet joint and the oil return joint are provided with distinguishing marks.

4. The motor housing inner surface machining fixture according to claim 1, characterized in that: The gas channel (12) is connected to an external air compression pump, and the gas channel (12) is connected to a pressure sensor.

5. The motor housing inner surface machining fixture according to claim 1, characterized in that: The clamp bracket (1) is provided with a lifting lug (15).

6. The motor housing inner surface machining fixture according to claim 2, characterized in that: The positioning assembly (2) comprises a supporting positioning pin (21) and a limiting positioning pin (22); the supporting positioning pin (21) is fixedly arranged on the upright plate (14) at the periphery of the feed hole (11) and is used for positioning and supporting the motor housing (7); the limiting positioning pin (22) is fixedly arranged on the upright plate (14) at the periphery of the feed hole (11) and is used for limiting and positioning at least three turning points of the periphery of the motor housing (7).

7. The motor housing inner surface machining fixture according to claim 1, characterized in that: The detection support assembly (3) comprises a plurality of support seats (31), wherein the support seats (31) are fixedly arranged on the fixture bracket (1) at the outer periphery of the tool feed hole (11), and a seat hole (32) is provided on the support surface of the support seat (31), and the seat hole (32) is connected to the gas channel (12).

8. The motor housing inner surface machining fixture according to claim 1, characterized in that: The first hydraulic clamping assembly (4) comprises a first rotating cylinder (41), a first pressure plate (42) and a first pressure plate support (43); the first pressure plate support (43) is arranged on the outer shell of the first rotating cylinder (41); one end of the first pressure plate (42) is rotatably connected to the hydraulic output shaft of the first rotating cylinder (41); and the middle part of the first pressure plate (42) is rotatably connected to the first pressure plate support (43).

9. The motor housing inner surface machining fixture according to claim 1, characterized in that: The second hydraulic clamping assembly (5) comprises a second rotating cylinder (51), a second pressure plate (52) and a second pressure plate support (53); the second pressure plate support (53) is arranged on the outer shell of the second rotating cylinder (51); one end of the second pressure plate (52) is rotatably connected to the hydraulic output shaft of the second rotating cylinder (51); and the middle part of the second pressure plate (52) is rotatably connected to the second pressure plate support (53).

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