Machining and positioning tool for hydraulic cylinder hinged fixing seat

Abstract

The utility model discloses a hydraulic cylinder hinge fixed seat processing positioning tool, which comprises a reference platform and a pressure applying assembly, a positioning boss is fixedly arranged on the reference surface of the reference platform, and the positioning boss is sleeved and matched with a central hole of a workpiece blank; the pressing assembly is provided with a pressing block, the pressing block moves in the axial direction of the positioning boss to be close to or away from the end face of the positioning boss, and the pressing block tightly presses the workpiece blank on the reference platform. The pressing block is provided with a plurality of positioning grooves, and the positioning grooves and threaded holes to be machined in the workpiece blank are concentrically arranged. One-time clamping can be carried out at the same time, machining of multiple fixing rod thread matching holes in the hydraulic cylinder hinged fixing base and machining of matched trunnions installed on the two sides are achieved, and machining precision is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to positioning frock technical field, especially hydraulic cylinder hinged fixing seat's processing positioning frock. BACKGROUND

[0002] Hydraulic cylinder is common drive execution element, its installation mode in practical application is various. In order to satisfy certain specific action, need to carry out hinged installation to cylinder body, to make along with the telescopic center pole, cylinder body rotates around fixed axle. To ensure the stability of long time operation hydraulic cylinder cylinder body, through a kind of hinged fixing seat, cylinder body is hinged and installed with target position, it is provided with a plurality of matching holes, it is used to be matched with the fixed rod of the plurality of fixed rod that surrounds the outside of cylinder body in parallel, to improve the purpose of cylinder body strength, both sides are provided with trunnion, it is used to be matched with the mounting hole reserved in installation position, realize the rotation of cylinder body around trunnion, reach the purpose of hinged installation.

[0003] For the machining of threaded matching hole and both sides trunnion, there is a high precision requirement, commonly through two processes, each process is positioned and clamped respectively, not only more cumbersome, affect processing efficiency, and positioning accuracy is difficult to guarantee. SUMMARY

[0004] The utility model discloses a hydraulic cylinder hinged fixing seat's processing positioning frock, realizes one clamping simultaneously, the machining of the plurality of fixed rod threaded matching hole and both sides installation matching trunnion on hydraulic cylinder hinged fixing seat, and ensures processing accuracy.

[0005] Technical scheme: in order to realize the above-mentioned purpose, the hydraulic cylinder hinged fixing seat's processing positioning frock of the utility model, including datum platform and pressure assembly, the datum surface of datum platform is fixedly provided with positioning boss, the positioning boss is matched with the center hole of workpiece embryo body;

[0006] The pressure assembly is provided with pressing block, the pressing block moves along the axial direction of the positioning boss and approaches or moves away from the end face of the positioning boss, and the pressing block presses the workpiece embryo body on the datum platform;

[0007] The pressing block is provided with a plurality of positioning grooves, and the positioning grooves are concentrically arranged with the threaded holes to be machined on the workpiece embryo body.

[0008] Further, the pressure assembly is provided with a driving rod, the pressing block is located at the upper end of the driving rod, the pressing block and the driving rod are fixedly arranged in the axial direction, the lower end of the driving rod is inserted into the center hole of the positioning boss, and the axial direction is locked and matched.

[0009] Further, the positioning boss is eccentrically provided with a guide rod, the guide rod is inserted into the eccentric positioning hole on the pressing block in a matched mode, and the guide rod is parallel to the driving rod.

[0010] Further, the upper end of the driving rod is rotationally matched with the center hole of the pressing block.

[0011] Further, the lower end of the driving rod is threadedly matched with the center hole.

[0012] Further, the reference platform is rotationally arranged, the rotation axis of the reference platform is orthogonal to the center point of the workpiece embryo, and the rotation axis of the reference platform is orthogonal to the axis of the ear shaft on the two sides.

[0013] Further, the reference platform is arranged in the center area of the workpiece embryo, and the center area is located between the ear shaft machining areas on the two ends of the workpiece embryo.

[0014] Beneficial effects: the machining positioning tool of the hydraulic cylinder hinged fixing seat of the utility model realizes the radial positioning of the workpiece embryo through the sleeving of the center hole relative to the positioning boss, realizes the radial limiting of the workpiece embryo through the abutting of the workpiece embryo and the reference surface of the reference platform, the pressing assembly is used for maintaining the abutting state of the workpiece embryo and the reference platform, the stability of the position after positioning is ensured, displacement does not occur in the machining process, the accuracy of the ear shaft machining is ensured; through the limiting, the pressing block only moves along the center hole axis, relatively approaches or moves away from the workpiece embryo, and relative rotation does not occur, so that when the pressing block completely presses the workpiece embryo, the threaded hole machined through the positioning groove 41 thereon meets the accuracy requirement. Further, the machining of the multiple fixed rod threaded holes on the hydraulic cylinder hinged fixing seat and the ear shafts on the two sides is simultaneously completed through one-time clamping, and the position accuracy is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is an overall structure schematic view of an embodiment of the utility model;

[0016] Figure 2 It is a structure schematic view of a reference platform and a pressing assembly of an embodiment of the utility model;

[0017] Figure 3 It is a relative position relationship schematic view of a workpiece embryo and a positioning boss of an embodiment of the utility model;

[0018] Figure 4 It is a structure top view schematic view of an embodiment of the utility model. DETAILED DESCRIPTION

[0019] The utility model will be further described in combination with the drawings.

[0020] As shown in the accompanying drawings Figures 1-4 The machining positioning tool for the hydraulic cylinder hinged fixing seat comprises a reference platform 1 and a pressing assembly, a positioning boss 2 is fixedly arranged on the reference surface of the reference platform 1, and the positioning boss 2 is sleeved with the center hole of a workpiece embryo 3; the positioning boss is a circular boss structure, the diameter of the circular section is installed to adapt to the outer diameter size of the hydraulic cylinder body, the workpiece embryo is pre-machined to a suitable size, and a center hole which is sleeved with the hydraulic cylinder body is pre-machined at the center position; the center hole is sleeved with the positioning boss to realize the radial positioning of the workpiece embryo; the workpiece embryo is attached to the reference surface of the reference platform to realize the axial positioning of the workpiece embryo. The pressing assembly is used for maintaining the attachment state of the workpiece embryo and the reference platform, ensuring the stability of the position after positioning, preventing displacement during machining, and ensuring the precision and quality of machining.

[0021] The pressing assembly is provided with a pressing block 4 which moves along the axial direction of the positioning boss 2 to approach or move away from the end surface of the positioning boss 2, and the pressing block 4 presses the workpiece embryo 3 on the reference platform 1; the pressing block 4 is provided with a plurality of positioning grooves 41 which are concentrically arranged with the threaded holes 31 to be machined on the workpiece embryo 3.

[0022] The machining position of the threaded hole on the end surface of the workpiece is determined by the positioning groove 41. Since the reference platform is installed at a fixed position relative to the machining center, the machining position of the trunnion on the workpiece embryo is determined after the workpiece embryo is completely positioned and clamped relative to the reference platform. At this time, the machining position of the threaded hole corresponding thereto should also be determined, that is, the projection of the pressing block on the end surface of the workpiece embryo is determined, so that the pressing block is limited to move only along the axial direction of the center hole and approach or move away from the workpiece embryo, and does not rotate relative to the workpiece embryo, so as to ensure that the threaded hole machined by the positioning groove 41 on the pressing block meets the position precision requirement when the pressing block completely presses the workpiece embryo.

[0023] The positioning groove is a closed circular groove hole with a slot profile radius greater than the radius of the threaded hole, or an open U-shaped slot, depending on the position of the positioning groove on the pressing block. The edge of the pressing block is a U-shaped slot, otherwise it is a circular groove hole. The profile of the positioning groove is used as a reference to machine the threaded hole with the required radius at the center position of the arc profile. The position precision of the machined threaded holes is ensured, and position deviation is avoided, so that the installation of the cylinder body and the fixing rod cannot be completed.

[0024] The pressing assembly is provided with a driving rod 5, the pressing block 4 is located at the upper end of the driving rod 5, the pressing block 4 is fixedly arranged in axial opposite to the driving rod 5, the lower end of the driving rod 5 is inserted into the center hole 21 of the positioning boss 2 and is axially locked and matched. Wherein, the driving rod is used to drive the pressing block to press the workpiece embryo on the reference surface, the pressing block is axially limited and arranged at the upper end of the driving rod, when the lower end of the driving rod is inserted into the center hole of the positioning boss to a certain depth, the pressing block is just attached to the workpiece embryo, and then the axial locking and limiting between the driving rod and the inner wall of the center hole can achieve the purpose of restraining the workpiece embryo to always adhere to the reference surface. As for the axial limiting and matching of the driving rod and the center hole, a controllable telescopic pin structure can be used to realize it, when inserted to a certain hole depth, it is automatically extended and matched with the upper insertion hole of the driving rod, when discharging, the pin is controlled to retract, so that the driving rod can be pulled out of the center hole to realize unlocking.

[0025] The positioning boss 2 is eccentrically provided with a guide rod 22, the guide rod 22 is inserted and matched with the eccentric positioning hole on the pressing block 4, and the guide rod 22 is parallel to the driving rod 5. Through the guidance and constraint of the guide rod, the rotation of the pressing block when approaching the workpiece embryo is avoided, and the relative position relationship between the positioning groove and the workpiece embryo is stable.

[0026] The upper end of the driving rod 5 is rotationally matched with the center hole of the pressing block 4. The driving rod can rotate relative to the pressing block, and in the process of ensuring that the pressing block stably moves downward with the guide rod, the driving rod can be rotationally matched with the center hole, the axial locking structure between the two has more choices, for example, an elastic pin structure is used, when the driving rod is axially pushed into the hole, the pin is pushed to retract into the hole wall, when a certain depth is reached, it is automatically popped out and matched with the upper insertion hole of the driving rod to realize locking. A rotating direction guide sliding surface is arranged on one side of the insertion hole, the pin can be pushed out of the insertion hole by rotating the driving rod, so that the driving rod can be pulled out of the center hole to realize unlocking.

[0027] The lower end of the driving rod 5 is threadedly matched with the center hole 21. The thread matching can freely control the locking depth, adjust the pressing degree of the workpiece, and is convenient to operate.

[0028] The reference platform 1 is rotationally arranged, the rotation axis of the reference platform 1 is orthogonal to the center hole axis of the workpiece embryo 3 and the axes of the two side trunnions 32, and the three are orthogonal to each other at the center point of the workpiece embryo 3. The machining of the two side trunnions can be completed by turning over, since the clamping position does not change, the two side trunnions are machined by the same position machining device, the precision of the two side trunnions is consistent, the axes of the two side trunnions coincide, and after installation, the cylinder body can normally complete the swing relative to the installation target.

[0029] The reference platform 1 is located in the center area 33 of the workpiece blank 3, and the center area is located between the trunnion machining areas 34 at both ends of the workpiece blank 3. The reference platform avoids interfering with the trunnion machining on both sides, the pressing and fixing position is located in the middle of the part, and most of the unprocessed parts are clamped, so that the workpiece blank is more reliable and firm during machining, stable and not displaced, further ensuring the machining precision.

[0030] Preferably, the reference platform 1 adopts a plate bridge structure, and the plate bridge structure is erected between the two rotary chucks 10 and is driven by a driving motor to rotate. A plurality of positioning bosses 2 and matched pressing assemblies can be arranged on the plate bridge structure along the length direction of the plate bridge structure, so that a plurality of hinged fixing bases can be clamped and machined at one time; and the distance between the two rotary chucks 10 is adjustable, so that the bridge plate structure can be selected to be increased and widened according to the size of the machining center, so that the clamping number of the hinged fixing base can be increased correspondingly.

[0031] After the plurality of hinged fixing bases are clamped and fixed, the outer peripheral profile of the workpiece blank and the plurality of threaded holes on the end face are machined by the machining center, the plate bridge is controlled to rotate 90°, the trunnion on one side is machined by the machining center, the plate bridge is controlled to rotate 180°, and the trunnion on the other side is machined by the machining center, so as to ensure the concentricity of the trunnions on both sides. Thus, all processes can be completed at one time by clamping, the workpiece has good concentricity and high precision, and multiple machining is not required, so that the production efficiency is improved.

[0032] The above is only the preferred embodiment of the present application, and it should be pointed out that: for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. The processing and positioning tooling of the hydraulic cylinder hinged fixing seat is characterized by: It comprises a reference platform (1) and a pressure component, wherein a positioning boss (2) is fixedly provided on the reference surface of the reference platform (1), and the positioning boss (2) is sleeved and matched with the center hole of the workpiece blank (3); The pressure assembly is provided with a pressure block (4), and the pressure block (4) moves along the axial direction of the positioning boss (2) to approach or move away from the end face of the positioning boss (2), and the pressure block (4) presses the workpiece blank (3) on the reference platform (1); The pressing block (4) is provided with a plurality of positioning grooves (41), and the positioning grooves (41) are arranged concentrically with the threaded holes (31) to be processed on the workpiece blank (3).

2. The processing and positioning tool for the hydraulic cylinder hinged fixing seat according to claim 1 is characterized in that: The pressure assembly is provided with a driving rod (5), the pressure block (4) is located at the upper end of the driving rod (5), the pressure block (4) and the driving rod (5) are fixedly arranged relative to each other in the axial direction, and the lower end of the driving rod (5) is inserted into the center hole (21) of the positioning boss (2) and locked relative to each other in the axial direction.

3. The processing and positioning tool for the hydraulic cylinder hinged fixing seat according to claim 2 is characterized in that: A guide rod (22) is eccentrically provided on the positioning boss (2), the guide rod (22) is inserted and matched with the eccentric positioning hole on the pressing block (4), and the guide rod (22) and the driving rod (5) are parallel to each other.

4. The machining and positioning tool for the hydraulic cylinder hinged fixing seat according to claim 3 is characterized in that: The upper end of the driving rod (5) is rotatably engaged with the center hole of the pressing block (4).

5. The machining and positioning tool for the hinged fixing seat of the hydraulic cylinder according to claim 4 is characterized in that: The lower end of the driving rod (5) is threadedly engaged with the central hole (21).

6. The machining and positioning tool for the hinged fixing seat of the hydraulic cylinder according to claim 5, characterized in that: The reference platform (1) is rotatably arranged, and the axis of the rotation shaft of the reference platform (1), the axis of the central hole of the workpiece embryo (3), and the axes of the ear shafts (32) on both sides are mutually orthogonal to the center point of the workpiece embryo (3).

7. The machining and positioning tool for the hinged fixing seat of the hydraulic cylinder according to claim 6, characterized in that: The reference platform (1) is located in a central area (33) of the workpiece body (3), and the central area is located between the ear shaft processing areas (34) at both ends of the workpiece body (3).

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