Combined hydraulic clamp for machining tower surface, typewriting surface and drilling hole of bearing cover bolt

Abstract

The utility model discloses a combined hydraulic clamp for processing a tower surface, a typewriting surface and a drilling hole of a bearing cover bolt, which comprises a clamp bottom plate, a workpiece, a positioning piece and a clamping piece, the workpiece, the positioning piece and the clamping piece are arranged on the clamp bottom plate, the clamping piece comprises a main pressing cylinder, a side pressing cylinder and an auxiliary supporting cylinder, the main pressing cylinder is close to two large surfaces of the workpiece, and the side pressing cylinder is close to the auxiliary supporting cylinder. Side pressing cylinder pressing large surfaces are arranged on the other two large surfaces of the workpiece; the positioning piece comprises an end positioning block, a lower positioning block and a side positioning block, the lower positioning block is arranged below the workpiece, and an auxiliary supporting cylinder and the end positioning block are arranged at the two ends of the workpiece respectively; a wrench-shaped main pressing arm is arranged on the main pressing cylinder; and the main pressing arm is used for pressing an arc reinforcing rib of the workpiece. The problem that the machining quality is difficult to guarantee due to simultaneous face milling and drilling of the bearing cover is solved, the equipment utilization rate is greatly improved, the number of operators is reduced, and the production cost is greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing cover clamps, in particular to a combined hydraulic clamp for processing a tower surface, a punching surface and a drilling hole of a bearing cover bolt. Background Art

[0002] The bearing cover processing process is relatively long. When processing the "bolt tower surface, typing surface and drilling hole", the traditional process uses manual clamps or hydraulic vises to position and clamp the workpiece, which can only realize the processing of a single surface or hole. It is difficult to achieve "one-time clamping to complete the processing of the surface and hole". The product quality is unstable, the Cpk value of the process system cannot reach above 1.33, and the production efficiency is low. The equipment occupies a large number of units, the number of operators is large, and the production cost is high. It is no longer suitable for modern high-quality, high-efficiency large-scale CNC processing, and cannot meet the company's production and quality requirements. Utility Model Content

[0003] The purpose of the utility model is to provide a combined hydraulic clamp for processing the tower surface, typing surface and drilling holes of the bearing cover bolt in view of the above-mentioned problems currently existing, thereby solving the problem that it is difficult to ensure the quality of simultaneous processing of the milling surface and drilling holes of the bearing cover, greatly improving the utilization rate of the equipment, reducing the number of operators, and significantly reducing production costs.

[0004] The technical solution of the utility model is as follows:

[0005] A combined hydraulic clamp for processing the tower surface, typing surface and drilling hole of a bearing cover bolt, comprising a clamp base plate, a workpiece, a positioning member and a clamping member, wherein the workpiece, the positioning member and the clamping member are arranged on the clamp base plate, and the clamping member comprises a main clamping cylinder, a side clamping cylinder and an auxiliary support cylinder, the main clamping cylinder is close to the two major surfaces of the workpiece, and the other two major surfaces of the workpiece are provided with side clamping cylinders to clamp the large surfaces; the positioning member comprises an end positioning block, a lower positioning block and a side positioning block, a lower positioning block is arranged under the workpiece, and auxiliary support cylinders and end positioning blocks are respectively arranged at both ends of the workpiece; a wrench-shaped main clamping arm is arranged on the main clamping cylinder, and the main clamping arm clamps the arc reinforcement ribs of the workpiece.

[0006] Furthermore, the end positioning block positions the side surface of the bolt column on one side of the workpiece, and the auxiliary support cylinder lightly presses the side surface of the bolt column on the other side and immediately locks it to form a rigid support.

[0007] Furthermore, a guide arm is provided on the side clamping cylinder, a side pressure head is provided at the front end of the guide arm, and the side clamping cylinder pushes the side pressure head to clamp the two major surfaces of the workpiece through the guide arm.

[0008] Furthermore, a side positioning block is provided on one side of the main clamping cylinder, and the side positioning block is used to position two large surfaces of the workpiece.

[0009] Furthermore, the lower positioning block supports the separation and joining surface of the workpiece.

[0010] Furthermore, a sequence valve for controlling hydraulic action is also arranged on the fixture bottom plate.

[0011] Furthermore, the number of the side clamping cylinders and the side pressure heads is at least two, and the number of the guide arms is at least four.

[0012] Furthermore, the number of the auxiliary support cylinders and the end positioning blocks is at least two.

[0013] Furthermore, the number of the side positioning blocks is at least two.

[0014] Furthermore, arc reinforcing ribs are arranged on the typing surface of the workpiece.

[0015] Compared with the existing technology, the beneficial effects of the utility model are:

[0016] 1. A combined hydraulic fixture for machining the tower surface, punching surface and drilling holes of the bearing cap bolts. The hydraulic system adopts a plate structure, and all pipeline connections are integrated on the fixture bottom plate, which greatly reduces the size of the fixture and avoids the risk of joint oil leakage caused by the tubular structure;

[0017] 2. A combined hydraulic clamp for machining the tower surface, typing surface and drilling of bearing cap bolts, adopting six-point full positioning, and clamping with main, secondary and auxiliary triple clamping to greatly improve the rigidity of the workpiece when it is clamped;

[0018] 3. A combined hydraulic fixture for processing the tower surface, typing surface and drilling hole of the bearing cap bolt, which overlaps the three bases, namely the process base, measurement base and design base, on one surface to reduce the error caused by base conversion;

[0019] 4. A combined hydraulic fixture for processing the tower surface, typing surface and drilling hole of the bearing cap bolt. The main pressing surface is a circular arc reinforcement rib, and the pressure head adopts a conformal floating pressure head to ensure that the main pressing force is perpendicular to the positioning surface;

[0020] 5. A combined hydraulic fixture for processing the tower surface, punching surface and drilling holes of the bearing cover bolts. Multiple processes are completed on the fixture, namely milling the bolt pressing surface, milling the punching surface, and drilling two bolt holes. The fixture can solve the common problem of simultaneous processing of the bearing cover surface and holes.

[0021] 6. A combined hydraulic fixture for processing the tower surface, typing surface and drilling holes of the bearing cover bolts. By replacing the lower positioning block, side positioning block and end positioning block, various types of bearing covers can be processed.

[0022] 7. The base plate material of a combined hydraulic fixture for processing bearing covers is P20 (3Cr2Mo) with a tempering hardness requirement of HRC22-25. It has small heat treatment deformation, high stability, can withstand high pressure and high heat, and has obvious effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The present invention is a schematic diagram of the fixture structure of a combined hydraulic fixture for processing the tower surface, typing surface and drilling hole of a bearing cover bolt.

[0024] Figure 2 The present invention is a schematic diagram of the workpiece structure of a combined hydraulic fixture for processing the tower surface, typing surface and drilling hole of a bearing cover bolt.

[0025] Figure 3 The present invention is a hydraulic principle diagram of a combined hydraulic fixture for machining the tower surface, the typing surface and the drilling hole of a bearing cap bolt.

[0026] Reference numerals: 1-clamp base plate, 2-side clamping cylinder, 3-side pressure head, 4-main clamping arm, 5-side positioning block, 6-main clamping cylinder, 7-auxiliary support cylinder, 8-lower positioning block, 9-guide arm, 10-end positioning block, 11-sequence valve, 12-reversing valve;

[0027] 21- stop surface, 22- bolt column side, 23- bolt pressing surface, 24- typing surface, 25- separation and joining surface, 26- spindle hole, 27- two large surfaces, 28- bolt hole, 29- arc reinforcement rib. DETAILED DESCRIPTION

[0028] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0029] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0030] See also Figure 1-3 , a combined hydraulic fixture for machining the tower surface, typing surface and drilling of bearing cap bolts, such as Figure 1 , Figure 2As shown, it includes a fixture base plate 1, a workpiece, a positioning member and a clamping member, and the workpiece, the positioning member and the clamping member are arranged on the fixture base plate 1, and the clamping member includes a main clamping cylinder 6, a side clamping cylinder 2 and an auxiliary support cylinder 7. The main clamping cylinder 6 is close to the two large surfaces 27 of the workpiece, and the other two large surfaces 27 of the workpiece are provided with side clamping cylinders 2 to clamp the large surfaces; the positioning member includes an end positioning block 10, a lower positioning block 8 and a side positioning block 5, a lower positioning block 8 is provided under the workpiece, and auxiliary support cylinders 7 and end positioning blocks 10 are respectively provided at both ends of the workpiece; a wrench-shaped main clamping arm 4 is provided on the main clamping cylinder 6, and the main clamping arm 4 clamps the arc reinforcement ribs of the workpiece.

[0031] The end positioning block 10 positions the bolt column side 22 on one side of the workpiece, and the auxiliary support cylinder 7 lightly presses the bolt column side 22 on the other side and immediately locks it to form a rigid support.

[0032] The side clamping cylinder 2 is provided with a guide arm 9 , and a side pressure head 3 is provided at the front end of the guide arm 9 . The side clamping cylinder 2 pushes the side pressure head 3 through the guide arm 9 to clamp the two major surfaces 27 of the workpiece.

[0033] A side positioning block 5 is provided on one side of the main clamping cylinder 6 , and the side positioning block 5 is used to position the two large surfaces 27 of the workpiece.

[0034] The lower positioning block 8 supports the separation and joining surface 25 of the workpiece.

[0035] The fixture bottom plate 1 is also provided with a sequence valve 11 for controlling hydraulic action.

[0036] The number of the side clamping cylinders 2 and the side pressure heads 3 is at least two, and the number of the guide arms 9 is at least four.

[0037] The number of the auxiliary support cylinder 7 and the end positioning block 10 is at least two.

[0038] The number of the side positioning blocks 5 is at least two.

[0039] Arc reinforcement ribs 29 are arranged on the typing surface 24 of the workpiece.

[0040] How it works

[0041] The positioning action is as follows: the separation and combination surface 25 falls flat on the lower positioning block 8, the stop surface 21 is in close contact with the end positioning block 10, and the two large surfaces 27 are in close contact with the side positioning block 5.

[0042] The clamping action is as follows: the auxiliary support cylinder 7 presses the side surface 22 of the bolt column at the other end of the workpiece and locks it to form a rigid support, the side clamping cylinder 2 pushes the side pressure head 3 to press the two large surfaces 27 of the workpiece, and the main clamping cylinder 6 pulls the main clamping arm 4 to press the semicircular blank surface of the arc reinforcement rib 29 of the workpiece.

[0043] Cutting actions: milling bolt pressing surface 23, milling typing surface 24, drilling two bolt holes 28.

[0044] Hydraulic principle: Figure 3 As shown, the electromagnetic reversing valve 12 is energized, the hydraulic oil enters the auxiliary support cylinder 7, the support head extends until it touches the workpiece, then stops moving immediately and continues to be pressurized until it is locked, and at the same time, the hydraulic oil enters the large cavity of the side clamping cylinder 2 to clamp the two large surfaces 27 of the workpiece. Since the piston area of ​​the auxiliary support cylinder 7 is smaller than the piston area of ​​the side clamping cylinder 1, the auxiliary support cylinder 7 can be ensured to act first. When the system pressure rises to the set pressure of 30 bar of the sequence valve 11, the sequence valve opens the hydraulic oil to enter the small cavity of the main clamping cylinder 6 to pull the main clamping arm 4 to clamp the workpiece.

[0045] It adopts six-point full positioning and the clamping adopts main, auxiliary and auxiliary triple clamping to greatly improve the rigidity of the workpiece when it is clamped;

[0046] Overlap the three bases, i.e. process base, measurement base and design base, on one surface to reduce the error caused by base conversion;

[0047] The hydraulic system adopts a plate structure, and all pipeline connections are integrated on the fixture bottom plate, which greatly reduces the size of the fixture and avoids the risk of joint oil leakage caused by the tubular structure;

[0048] The main pressing surface is a circular arc reinforcement rib, and the pressure head adopts a conformal floating pressure head to ensure that the main pressing force is perpendicular to the positioning surface;

[0049] Multiple processes are completed on this fixture, namely milling the bolt pressing surface, milling the typing surface, and drilling two bolt holes. The use of this fixture solves the common problem of simultaneous processing of the bearing cover surface and holes.

[0050] The above-mentioned embodiments only express the specific implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the protection scope of the present application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the technical solution concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A combined hydraulic fixture for machining the tower surface, the typing surface and the drilling hole of the bearing cap bolt, characterized in that: The invention comprises a fixture base plate (1), a workpiece, a positioning member and a clamping member, wherein the workpiece, the positioning member and the clamping member are arranged on the fixture base plate (1), the clamping member comprises a main clamping cylinder (6), a side clamping cylinder (2) and an auxiliary support cylinder (7), the main clamping cylinder (6) is close to two large surfaces (27) of the workpiece, and the other two large surfaces (27) of the workpiece are provided with a side clamping cylinder (2) for clamping the large surfaces; the positioning member comprises an end positioning block (10), a lower positioning block (8) and a side positioning block (5), a lower positioning block (8) is provided under the workpiece, and the two ends of the workpiece are respectively provided with an auxiliary support cylinder (7) and an end positioning block (10); a wrench-shaped main clamping arm (4) is provided on the main clamping cylinder (6), and the main clamping arm (4) clamps the arc reinforcing ribs of the workpiece.

2. A combined hydraulic fixture for machining the tower surface, the punching surface and the drilling hole of a bearing cap bolt according to claim 1, characterized in that: The end positioning block (10) positions the bolt column side surface (22) on one side of the workpiece, and the auxiliary support cylinder (7) lightly presses the bolt column side surface (22) on the other side and immediately locks it to form a rigid support.

3. A combined hydraulic fixture for machining the tower surface, the punching surface and the drilling hole of a bearing cap bolt according to claim 1, characterized in that: The side clamping cylinder (2) is provided with a guide arm (9), and a side clamping head (3) is provided at the front end of the guide arm (9). The side clamping cylinder (2) pushes the side clamping head (3) to clamp the two major surfaces (27) of the workpiece via the guide arm (9).

4. A combined hydraulic fixture for machining the tower surface, the punching surface and the drilling hole of a bearing cap bolt according to claim 1, characterized in that: A side positioning block (5) is provided on one side of the main clamping cylinder (6), and the side positioning block (5) is used to position two large surfaces (27) of the workpiece.

5. A combined hydraulic fixture for machining the tower surface, the punching surface and the drilling hole of a bearing cap bolt according to claim 1, characterized in that: The lower positioning block (8) supports the separation and joining surface (25) of the workpiece.

6. A combined hydraulic fixture for machining the tower surface, the punching surface and the drilling hole of a bearing cap bolt according to claim 1, characterized in that: The clamp bottom plate (1) is also provided with a sequence valve (11) for controlling hydraulic action.

7. A combined hydraulic fixture for machining the tower surface, the punching surface and the drilling hole of a bearing cap bolt according to claim 1 or 3, characterized in that: The number of the side clamping cylinders (2) and the side pressure heads (3) is at least two, and the number of the guide arms (9) is at least four.

8. A combined hydraulic fixture for machining the tower surface, the punching surface and the drilling hole of a bearing cap bolt according to claim 1 or 2, characterized in that: The number of the auxiliary support cylinder (7) and the end positioning block (10) is at least two.

9. A combined hydraulic fixture for machining the tower surface, the punching surface and the drilling hole of a bearing cap bolt according to claim 4, characterized in that: The number of the side positioning blocks (5) is at least two.

10. A combined hydraulic fixture for machining the tower surface, the punching surface and the drilling hole of a bearing cap bolt according to claim 1, characterized in that: Arc reinforcing ribs (29) are provided on the typing surface (24) of the workpiece.

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