Clamp and cutter for machining arcs of support parts for hydraulic pumps

Abstract

The utility model discloses a clamp and a cutter for machining the arc of a support part for a hydraulic pump, the clamp comprises a clamping device and a cutter device, the clamping device comprises a positioning device and a pressing device; the positioning device comprises a flange plate, and a center hole positioning piece, an angle positioning piece and an end face positioning piece are arranged on the upper end face of the flange plate. The cutter device comprises a cutter bar and a turning tool; the turning tool is connected with the tool bar and is perpendicular to the tool bar, and a blade is arranged at the end, away from the tool bar, of the turning tool. The machining cycle of the arc surface of the support part is shortened, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical processing technical field, concretely is a kind of hydraulic pump support class parts arc machining's clamp and tool. BACKGROUND

[0002] The support of hydraulic pump is usually configured with swash plate support in hydraulic pump, the support is composed of base and arc, the support is integrated structure of base and arc, support class parts for hydraulic pump plays key supporting and connecting role in hydraulic system, the machining precision of its arc portion directly influences the performance and stability of entire hydraulic pump.The traditional processing technology gradually exposes many limitations when facing the increasing product quality requirement and production efficiency demand.The traditional support class parts arc machining process for hydraulic pump is processed using ordinary lathe or milling machine.In the processing of ordinary lathe, it needs to clamp and adjust tool multiple times, not only operation is complicated, but also it is difficult to guarantee the consistency and high precision of arc.Milling machine processing can improve machining precision to some extent, but processing efficiency is lower, and tool wears fast, lead to higher production cost.In addition, the traditional process has poor adaptability for complex shape arc processing, often needs additional bench work finishing process, further increases manpower and time cost.Therefore, through in-depth research and repeated test on boring and milling combined machine tool, a kind of support class parts arc machining's clamp and tool for hydraulic pump are successfully developed. SUMMARY

[0003] In view of the above defects existing in prior art, the utility model aims at providing a kind of support class parts arc machining's clamp and tool for hydraulic pump.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0005] The utility model provides a kind of hydraulic pump support class part arc processing's anchor clamps and tool, including clamping device, tool device, the clamping device includes positioning device, pressing device;The positioning device includes flange, and the flange upper end surface is provided with center hole positioning piece, angle positioning piece, end surface positioning piece;The pressing device includes pressing seat, T screw, support column, locking nut, support nail, pressing plate;The pressing seat lower end surface is provided with counterbore, and the T screw passes through the counterbore of pressing seat, and the T head of T screw is matched with the counterbore of pressing seat, and the pressing seat is set on the flange upper end surface, and the support nail is set on the flange upper end surface, and the pressing plate is provided with long hole through and through, and the pressing plate lower end surface is provided with long slot, and the rod portion of T screw passes through long hole, and the locking nut is connected with T screw above pressing plate, and the upper end of support column is located in long slot, and the support nail is set on the pressing plate lower end surface, and the support nail is close to mandrel, and the support column is away from mandrel;The tool device includes tool bar, turning tool;The turning tool is connected with tool bar, and the turning tool is perpendicular to tool bar, and the end of turning tool away from tool bar is provided with blade.

[0006] Further, the center hole positioning piece is a mandrel, the angle positioning piece is a positioning pin, and the end surface positioning piece is a support block.

[0007] Further, the support block is provided with two, the pressing device is provided with two, and the support block and support nail are one-to-one corresponding.

[0008] Further, the mandrel is connected with the flange by a first screw, the outer wall of the upper end of the mandrel is provided with a positioning block, and the mandrel is located at the center of the flange.

[0009] Further, the positioning pin is connected with the flange by a second screw.

[0010] Further, the support block is connected with the flange by a third screw.

[0011] Further, the pressing seat is connected with the flange by a fourth screw.

[0012] Further, the lower end of the support column is threadedly connected with the flange by a stud.

[0013] Further, the support nail and the pressing plate are threadedly connected.

[0014] Further, the turning tool is inserted into the tool bar, and the tool bar is provided with a fifth screw and a sixth screw perpendicular to each other to lock the turning tool.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model discloses make full use of the multi-shaft linkage function of boring and milling compound machine tool in continuous processing process, realize the arc machining of support class parts and other related working procedure (such as hole system machining etc.) under the condition of once clamping, this not only avoids the positioning error caused by multiple clamping, guarantees the relative position accuracy between various processing parts, and moreover, the processing cycle is shortened significantly, the production efficiency is improved by several times, and the economy and popularization are greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is the explosion schematic view of the clamping device in the utility model.

[0018] Fig. 2 It is the structure schematic view of the clamping device in the utility model.

[0019] Fig. 3 It is the sectional view of the clamping device in the utility model.

[0020] Fig. 4 It is the structure schematic view of the tool device in the utility model.

[0021] In the drawing: 1, flange plate;2, mandrel;3, positioning pin;4, support block;5, first screw;6, second screw;7, third screw;8, compression seat;9, T type screw;10, support column;11, locking nut;12, support nail;13, pressing plate;14, fourth screw;15, support class parts.

[0022] 21, tool bar;22, turning tool;23, blade;24, fifth screw;25, sixth screw;26, seventh screw. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the utility model.

[0024] Embodiment 1:

[0025] Please refer to Figs. 1 to 4 The utility model provides a kind of hydraulic pump support class parts arc machining's clamp and tool, including clamping device, tool device.

[0026] Further, the clamping device comprises a positioning device and a pressing device; the positioning device comprises a flange plate 1, a mandrel 2, a positioning pin 3, and a support block 4, the mandrel 2, the positioning pin 3, and the support block 4 are arranged on the upper end face of the flange plate 1; the pressing device comprises a pressing seat 8, a T-shaped screw 9, a support column 10, a locking nut 11, a support nail 12, and a pressing plate 13, the lower end face of the pressing seat 8 is provided with a counterbore, the T-shaped screw 9 penetrates through the counterbore of the pressing seat 8, the T-shaped head of the T-shaped screw 9 is matched with the counterbore of the pressing seat 8, the pressing seat 8 is arranged on the upper end face of the flange plate 1, the support nail 12 is arranged on the upper end face of the flange plate 1, the pressing plate 13 is provided with a long slot hole penetrating through the upper and lower ends, the lower end face of the pressing plate 13 is provided with a long slot, the rod part of the T-shaped screw 9 penetrates through the long slot hole, the locking nut 11 is connected with the T-shaped screw 9 above the pressing plate 13, the upper end of the support column 10 is located in the long slot, the support nail 12 is arranged on the lower end face of the pressing plate 13, the support nail 12 is close to the mandrel 2, and the support column 10 is away from the mandrel 2.

[0027] The support block 4 is provided with two, the pressing device is provided with two, and the support block 4 corresponds to the support nail 12 one by one.

[0028] The flange plate 1 is mainly used for connecting and positioning basic components, and is connected with a machine tool workbench during use, the flange plate 1 is a steel piece, the surface hardness is improved through a heat treatment process, and the stability is enhanced.

[0029] The mandrel 2 is connected with the flange plate 1 through a first screw 5, the outer wall of the upper end of the mandrel 2 is provided with a positioning block, the mandrel 2 is located at the center of the flange plate 1, the mandrel 2 mainly serves to connect the flange plate 1 and the center hole of a positioning support 15, and the mandrel 2 belongs to an easily-worn part and is separately designed, so that the mandrel 2 can be replaced in time after being worn, and the cost is reduced.

[0030] The positioning pin 3 is connected with the flange plate 1 through a second screw 6, and the positioning pin 3 mainly serves to provide angular positioning for the support 15.

[0031] The support block 4 is connected with the flange plate 1 through a third screw 7, the support block 4 provides support for the support 15, determines the position of the support 15, and ensures the coherent transmission of precision.

[0032] The pressing seat 8 is connected with the flange plate 1 through a fourth screw 14, and the pressing seat 8 mainly serves to stabilize the use range of the pressing device and fasten the position of the T-shaped screw 9.

[0033] The T-shaped screw 9 is fixed on the pressing seat 8 and the flange plate 1, and mainly serves to connect the locking nut 11, so as to lock the pressing plate 13 and press.

[0034] Wherein, the lower end of the support column 10 is connected with the flange plate 1 by screwing, and the support column 10 supports the pressing plate 13 and positions the pressing plate 13 through the long slot.

[0035] Wherein, the locking nut 11 is above the pressing plate 13, and the connecting T-shaped bolt 11 presses the support base 15.

[0036] Wherein, the support nail 12 is connected with the pressing plate 13 by screwing, and when the pressing plate 13 is fastened, the force is applied to the support base 15, the support nail 12 is in surface contact with the support base 15, and the pressure is dispersed, preventing deformation caused by excessive local pressure, and the support nail 12 is pressed on the bottom plane of the through slot of the support base 15.

[0037] Wherein, the pressing plate 13 cooperates with the support nail 12 to firmly fix the support base 15 on the contact surface of the support block 4, and by applying a certain pressure, the movement of the support base 15 is limited.

[0038] Further, the tool device comprises a tool bar 21 and a turning tool 22, the turning tool 22 is connected with the tool bar 21, the turning tool 22 is perpendicular to the tool bar 21, and the end of the turning tool 22 away from the tool bar 21 is provided with a blade 23.

[0039] Wherein, the tool bar 21 is connected with the tool handle on the main shaft of the machine tool, the tool bar 21 is a steel piece, the surface hardness is improved by heat treatment process, and the stability is enhanced; the specific diameter of the tool bar 21 can be made according to the model of the tool handle of the machine tool.

[0040] Wherein, the turning tool 22 is inserted into the tool bar 21, the tool bar 21 is provided with a fifth screw 24 and a sixth screw 25 which are perpendicular to each other and lock the turning tool 22, the turning tool 22 is a common turning tool for external circle, and the appropriate turning tool 22 is selected according to the size of the arc of the part, the width of the through slot of the support base 15 and the size of the tool bar 21.

[0041] Wherein, the turning tool 22 is provided with a clamping groove, the blade 23 is installed in the clamping groove through a seventh screw 26, the blade 23 is a common turning tool blade, and the appropriate blade 23 is selected according to the different sizes of the turning tool 22, which is a consumable part and can be replaced in time according to the size of the arc, thereby reducing the cost.

[0042] Example 2:

[0043] Based on example 1, the present embodiment provides a support base part arc machining process method for hydraulic pump, comprising the following steps:

[0044] The support base part 15 blank is stress relieved before machining to eliminate the stress of the blank and reduce deformation.

[0045] The support type part 15 is subjected to large plane machining, so as to ensure that the inner hole size of the support type part 15 is gap fit with the tooling mandrel 2, the gap is 0.02-0.04mm within the drawing tolerance range, and the flatness is within 0.02mm.

[0046] The clamping device for machining the arc is installed on the workbench by using the horizontal boring and milling combined machine tool, the jumping is aligned, the center line of the clamping device is coincided with the rotation center of the workbench, the supporting block is parallel to the B-axis center of the machine tool, one support type part 15 is installed on the flange plate 1, the supporting block 4 on the flange plate 1 and the end surface of the support type part 15 are tightly attached, the pressing plate 13 is installed, the locking nut 11 is used for fixing, the lever table is used for aligning the angle of the support type part 15 (the arc surface is perpendicular to the B-axis of the machine tool) and setting the current angle into the machine tool coordinate system, the tool device specially used for machining the arc is installed on the machine tool spindle to perform the arc machining.

[0047] The support type part 15 arc is machined by using the horizontal boring and milling combined machine tool, the tool device is used for trial cutting, the arc size and the arc center to the positioning surface size are adjusted, one side is machined, the multi-axis linkage function of the machine tool is used for continuously machining the other side, so as to realize continuous machining, different size arcs are completed by using different length lathes 22, or the arc surface is machined by using the multi-axis linkage of the machine tool through the lathes 22 with the length greater than the arc surface depth.

[0048] In the present application, the parts themselves that are not expanded in the present application, and the connection modes of the parts in the present application all belong to the known technology in the technical field. Direct application can be used, and no further description is given.

[0049] In the present application, the term "a plurality of" refers to two or more, unless otherwise explicitly limited. The terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense. For example, "connecting" can be fixed connection, or detachable connection, or integrally connected. "Connected" can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0050] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or units referred to must have a specific direction, be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the present application.

[0051] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "a specific embodiment", and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0052] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. 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 and tool for arc machining of a bearing type part for a hydraulic pump, comprising a clamping device, a tool device, characterized in that, The clamping device comprises a positioning device and a pressing device. The positioning device comprises a flange plate, the upper end surface of which is provided with a central hole positioning member, an angle positioning member and an end surface positioning member. The pressing device comprises a pressing seat, a T-shaped screw, a support column, a locking nut, a support nail and a pressing plate; the lower end surface of the pressing seat is provided with a counterbore, the T-shaped screw passes through the counterbore of the pressing seat, the T-shaped head of the T-shaped screw is matched with the counterbore of the pressing seat, the pressing seat is arranged on the upper end surface of the flange plate, the support nail is arranged on the upper end surface of the flange plate, the pressing plate is provided with a long hole passing through from top to bottom, the lower end surface of the pressing plate is provided with a long slot, the rod part of the T-shaped screw passes through the long hole, the locking nut is connected with the T-shaped screw above the pressing plate, the upper end of the support column is located in the long slot, the support nail is arranged on the lower end surface of the pressing plate, the support nail is close to the mandrel, and the support column is away from the mandrel. The tool device comprises a tool rod and a turning tool; the turning tool is connected with the tool rod, the turning tool is perpendicular to the tool rod, and the end of the turning tool away from the tool rod is provided with a blade.

2. The fixture and cutter for circular-arc machining of a bearing-like part for a hydraulic pump according to claim 1, characterized in that, The central hole positioning member is a mandrel, the angle positioning member is a positioning pin, and the end surface positioning member is a support block.

3. The fixture and cutter for circular-arc machining of a bearing-like part of a hydraulic pump according to claim 2, characterized in that, The support block is provided with two, the pressing device is provided with two, and the support block and the support nail are one-to-one corresponding.

4. The fixture and cutter for arc machining of a bearing-like part of a hydraulic pump according to claim 2, characterized in that, The mandrel is connected with the flange plate through a first screw, the outer wall of the upper end of the mandrel is provided with a positioning block, and the mandrel is located at the center of the flange plate.

5. The fixture and cutter for arc machining of a bearing-like part of a hydraulic pump according to claim 2, characterized in that, The positioning pin is connected with the flange plate through a second screw.

6. The fixture and cutter for arc machining of a bearing-like part of a hydraulic pump according to claim 2, characterized in that, The support block is connected with the flange plate through a third screw.

7. The fixture and cutter for arc machining of a bearing-like part of a hydraulic pump according to claim 1, characterized in that, The pressing seat is connected with the flange plate through a fourth screw.

8. The fixture and cutter for arc machining of a bearing-like part of a hydraulic pump according to claim 1, characterized in that, The lower end of the support column is threadedly connected with the flange plate through a stud.

9. The fixture and cutter for arc machining of a bearing-like part of a hydraulic pump according to claim 1, characterized in that, The support nail and the pressing plate are threadedly connected.

10. The fixture and cutter for arc machining of a bearing-like part of a hydraulic pump according to claim 1, characterized in that, The turning tool is inserted into the tool rod, and the tool rod is provided with a fifth screw and a sixth screw which are perpendicular to each other and lock the turning tool.

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