A tooling fixture for composite processing of cylinder inner hole and blade groove

Abstract

The utility model discloses a tooling fixture for composite processing of cylinder inner hole and blade groove, comprising a mounting seat, a plurality of clamping devices are evenly spaced on one side of the mounting seat, a positioning device is arranged inside the mounting seat, the positioning device comprises a cylinder body and a piston rod which can reciprocate in the cylinder body, a positioning mandrel is arranged at one end of the piston rod, a mounting sleeve is sleeved on the positioning mandrel, a first conical surface is arranged on the inner side of the mounting sleeve, a second conical surface is arranged at one end of the positioning mandrel, an elastic part is arranged at the other end of the positioning mandrel, the second conical surface at one end of the positioning mandrel is closely matched with the first conical surface on the inner side of the mounting sleeve through the piston rod, and then when the positioning mandrel is pushed forward to position the inner hole of the workpiece, the inner circle of the workpiece can be fixed by the elastic part at one end of the positioning mandrel, so as to ensure the accuracy of centering. The utility model belongs to the field of tooling fixture design.

Description

Technical Field

[0001] The utility model belongs to the field of tooling fixture design, and more specifically relates to a tooling fixture used for composite processing of cylinder inner holes and blade grooves. Background Art

[0002] The tooling fixture is the core of the equipment processing parts. The fixture refers to the device used to fix the processing object in the mechanical manufacturing process so that it occupies the correct position to accept construction or inspection. In a broad sense, any device used to quickly, conveniently and safely install the workpiece in any process of the process can be called a fixture.

[0003] The fixture usually consists of positioning elements, clamping devices, tool guiding elements (to determine the relative position of the tool and the workpiece or to guide the direction of the tool), indexing devices (to enable the workpiece to complete several processing stations in one installation, and there are two types: rotary indexing devices and linear motion indexing devices), connecting elements and clamping bodies (fixture bases).

[0004] However, the current fixtures used for machining cylinder parts have poor centering, and multiple clampings are required to complete the grinding of the inner holes and groove surfaces of the parts, so the overall machining efficiency and machining accuracy are poor. Utility Model Content

[0005] The main purpose of the utility model is to provide a tooling fixture for composite processing of cylinder inner holes and blade grooves, which can improve processing efficiency and processing accuracy.

[0006] In order to achieve the above object, the technical solution of the utility model is:

[0007] A tooling fixture for composite processing of cylinder inner holes and blade grooves comprises a mounting seat, one side of the mounting seat is evenly spaced with a plurality of clamping devices for pressing the end face of a workpiece, a positioning device is arranged inside the mounting seat, the positioning device comprises a cylinder body and a piston rod that can reciprocate in the cylinder body, one end of the piston rod is provided with a positioning mandrel, a mounting sleeve is sleeved on the positioning mandrel, a first conical surface is arranged on the inner side of the mounting sleeve, one end of the positioning mandrel is provided with a second conical surface, the second conical surface can be connected with the first conical surface under the action of the piston rod, and the other end of the positioning mandrel is provided with an elastic portion that can contact and position with the inner hole of the workpiece.

[0008] In a specific embodiment of the utility model, the clamping device includes a first oil cylinder and a push rod arranged in the first oil cylinder, a pressure arm is provided perpendicular to the push rod, and the push rod can drive the pressure arm to press or loosen the workpiece.

[0009] In a specific embodiment of the present invention, a pressing block is respectively provided on the inner side of each pressing arm.

[0010] In a specific embodiment of the present invention, the positioning device further comprises a sealing cover fixedly connected to one end of the cylinder body and a guide sleeve arranged outside the sealing cover.

[0011] In a specific embodiment of the present invention, a connecting piece is provided between the piston rod and the positioning core shaft, and the piston rod can be fixedly connected to the positioning core shaft through the connecting piece.

[0012] In a specific embodiment of the utility model, one end of the connecting member is threadedly connected to the piston rod, and the other end of the connecting member is sleeved with a second sealing ring.

[0013] In a specific embodiment of the utility model, the positioning core shaft is further provided with a cylindrical area which can cooperate with the mounting sleeve, and the cylindrical area is located between the elastic part and the second conical surface.

[0014] In a specific embodiment of the utility model, a first sealing ring capable of preventing dirt from entering is provided between the positioning core shaft and the mounting sleeve, and the first sealing ring is sleeved on the cylindrical area.

[0015] In a specific embodiment of the present invention, two ends of the positioning mandrel are respectively provided with positioning pieces for angle positioning.

[0016] In a specific embodiment of the present invention, the elastic portion is in a circular petal shape, and the diameter of the elastic portion is greater than the diameter of the inner circle of the workpiece.

[0017] One of the above technical solutions of the utility model has at least one of the following advantages or beneficial effects:

[0018] The utility model can make the second conical surface at one end of the positioning mandrel closely match the first conical surface on the inner side of the mounting sleeve through the piston rod, and then when the positioning mandrel is pushed forward to position the inner hole of the workpiece, the inner circle of the workpiece can be fixed by the elastic part at one end of the positioning mandrel, so as to ensure the accuracy of centering. After the positioning mandrel is pushed forward to position the inner hole of the workpiece, the end face of the workpiece is pressed by the clamping device, and the processing position is made available to the grinding wheel by the retreat of the positioning mandrel. Moreover, the inner hole and groove surface of the workpiece can be ground by one clamping, thereby further improving the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments;

[0020] Attached Figure 1 This is an overall structural diagram of an embodiment of the utility model;

[0021] Attached Figure 2It is a front view of an embodiment of the utility model;

[0022] Attached Figure 3 This is a cross-sectional view taken along the AA direction of an embodiment of the utility model;

[0023] Attached Figure 4 A top view of an embodiment of the utility model;

[0024] Attached Figure 5 It is a side view of an embodiment of the utility model. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions from beginning to end. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0026] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more features.

[0029] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection or a movable connection, a detachable connection or a non-detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be internal connection between two elements, indirect connection, or an interactive relationship between two elements.

[0030] The following disclosure provides many different embodiments or examples for implementing different solutions of the present invention.

[0031] See attached Figure 1 To Attachment Figure 5 As shown, a tooling fixture for composite processing of cylinder inner holes and blade grooves includes a mounting seat 1, a clamping device 2 and a positioning device 3. By evenly arranging three clamping devices 2 on the side of the mounting seat 1 at intervals, the end face of the workpiece can be pressed and fixed after the positioning device 3 completes the positioning of the inner hole of the workpiece. The positioning device 3 is located inside the mounting seat 1.

[0032] In one embodiment of the utility model, the clamping device 2 includes a first oil cylinder 21 and a push rod 22 arranged in the first oil cylinder 21. The first oil cylinder 21 can be an angle oil cylinder, and a pressure arm 23 is provided perpendicular to the push rod 22. The push rod 22 can drive the pressure arm 23 to tighten or loosen the workpiece under the action of the first oil cylinder 21. A pressure block 25 that can directly contact the end face of the workpiece is provided on the inner side of each pressure arm 23.

[0033] In one embodiment of the utility model, the clamping devices 2 are evenly spaced on one side of the mounting seat 1. After the positioning mandrel 5 is pushed forward to position the inner hole of the workpiece, each clamping device 2 can press the end face of the workpiece. Further, the positioning mandrel 5 can be retracted under the drive of the piston rod 4 to make room for the grinding wheel for processing.

[0034] In one embodiment of the utility model, the positioning device 3 includes a cylinder body 31 and a piston rod 4, a positioning core shaft 5 is provided at one end of the piston rod 4, a mounting sleeve 6 is sleeved on the positioning core shaft 5, a first conical surface is provided on the inner side of the mounting sleeve 6, a second conical surface is provided at one end of the positioning core shaft 5, and an elastic part 51 that can contact and position with the inner hole of the workpiece is provided at the other end of the positioning core shaft 5. The second conical surface can be connected with the first conical surface under the action of the piston rod 4 to realize the matching of the conical surfaces, which can not only reduce wear but also achieve gap-free guidance.

[0035] In one embodiment of the utility model, the piston rod 4 can realize reciprocating motion in the cylinder body 31 through an air circuit, an oil circuit or a return spring that can be compressed in the cylinder body 31. Specifically, if a return spring design is adopted, the piston rod 4 can be pushed forward under the action of the return spring, so that the second conical surface at one end of the positioning core shaft 5 is tightly matched with the first conical surface on the inner side of the mounting sleeve 6, and then the piston rod 4 is controlled by the hydraulic oil circuit, thereby controlling the retraction of the positioning core shaft 5 to compress the return spring; the return spring can also be cancelled, and the reciprocating motion of the piston rod 4 can be controlled by pneumatic or oil pressure, and the forward and backward push of the positioning core shaft 5 can be controlled by the extension and contraction of the piston rod 4.

[0036] Furthermore, the inner circle of the workpiece can be fixed by the elastic portion 51 at the other end of the positioning mandrel 5, thereby ensuring the accuracy of centering and improving the machining accuracy. Moreover, the inner hole and groove surface grinding of the workpiece can be completed by one clamping, further improving the machining efficiency.

[0037] In one embodiment of the utility model, a cylindrical area is further provided on the positioning core shaft 5 and is located between the elastic portion 51 and the second conical surface. The second conical surface can be tightly connected with the first conical surface on the inner side of the mounting sleeve 6 under the drive of the positioning core shaft 5, so that the cylindrical area can cooperate with the inner wall of the mounting sleeve 6 to achieve sealing.

[0038] In one embodiment of the utility model, the part where the elastic part 51 contacts and locates the inner hole of the workpiece is an elastic deformation zone, and the elastic part 51 is in a round petal shape. The diameter of the elastic part 51 is set to be larger than the diameter of the inner circle of the workpiece, which can ensure the applicability of the elastic part 51 at one end of the positioning core shaft 5, so that the elastic part 51 can be pushed into the inner circle of the workpiece to be processed by the piston rod 4 under the action of the reset spring or the hydraulic oil circuit or the air circuit to realize contraction, and due to the elasticity, it will expand outward, thereby supporting and tightening the inner hole of the workpiece to ensure accurate centering.

[0039] In one embodiment of the utility model, the positioning core shaft 5 is cylindrical as a whole, and positioning pieces 52 for angle positioning are respectively provided at both ends of the positioning core shaft 5, so as to ensure that the positioning accuracy is reliable under the sealed protection state, and by arranging a first sealing ring 53 between the positioning core shaft 5 and the mounting sleeve 6, the first sealing ring 53 is sleeved in the cylindrical area, so that dirt and the like are difficult to enter the interior of the tooling, which can ensure that the core components of the tooling are not affected by impurities, thereby ensuring the reliability of the front and rear sliding accuracy and the angle positioning accuracy.

[0040] In one embodiment of the utility model, the surface of the mounting sleeve 6 is provided with dense tooth surfaces to ensure that it is rough and strong, so that the workpiece can be well clamped during the processing by cooperating with an elastic straight-claw clamp.

[0041] In one embodiment of the utility model, a connecting piece 9 is provided between the piston rod 4 and the positioning core shaft 5, and the piston rod 4 can be fixedly connected to the positioning core shaft 5 through the connecting piece 9. Specifically, one end of the connecting piece 9 is threadedly connected to the piston rod 4, and the other end of the connecting piece 9 is sleeved with a second sealing ring 91.

[0042] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A fixture for composite processing of cylinder inner hole and blade groove, comprising a mounting seat (1), characterized in that: A plurality of clamping devices (2) capable of pressing the end face of a workpiece are evenly spaced on one side of the mounting seat (1); a positioning device (3) is provided inside the mounting seat (1); the positioning device (3) comprises a cylinder body (31) and a piston rod (4) capable of reciprocating in the cylinder body (31); a positioning mandrel (5) is provided at one end of the piston rod (4); a mounting sleeve (6) is sleeved on the positioning mandrel (5); a first conical surface is provided on the inner side of the mounting sleeve (6); a second conical surface is provided at one end of the positioning mandrel (5); the second conical surface can be connected to the first conical surface under the action of the piston rod (4); and an elastic portion (51) capable of contacting and positioning with the inner hole of the workpiece is provided at the other end of the positioning mandrel (5).

2. The fixture for composite processing of cylinder inner hole and blade groove according to claim 1 is characterized in that: The clamping device (2) comprises a first oil cylinder (21) and a push rod (22) arranged in the first oil cylinder (21), and a pressing arm (23) is arranged perpendicular to the push rod (22). The push rod (22) can drive the pressing arm (23) to press or loosen the workpiece.

3. The fixture for composite processing of cylinder inner hole and blade groove according to claim 2 is characterized in that: A pressing block (25) is provided on the inner side of each pressing arm (23).

4. The jig for composite processing of cylinder inner hole and blade groove according to claim 1 is characterized in that: The positioning device (3) further comprises a sealing cover (33) fixedly connected to one end of the cylinder body (31) and a guide sleeve (8) arranged outside the sealing cover (33).

5. The fixture for composite processing of cylinder inner hole and blade groove according to claim 1, characterized in that: A connecting piece (9) is provided between the piston rod (4) and the positioning core shaft (5), and the piston rod (4) can be fixedly connected to the positioning core shaft (5) via the connecting piece (9).

6. The fixture for composite processing of cylinder inner hole and blade groove according to claim 5, characterized in that: One end of the connecting piece (9) is threadedly connected to the piston rod (4), and the other end of the connecting piece (9) is sleeved with a second sealing ring (91).

7. The fixture for composite processing of cylinder inner hole and blade groove according to claim 1, characterized in that: The positioning core shaft (5) is also provided with a cylindrical area that can cooperate with the mounting sleeve (6), and the cylindrical area is located between the elastic part (51) and the second conical surface.

8. The fixture for composite processing of cylinder inner hole and blade groove according to claim 7, characterized in that: A first sealing ring (53) is provided between the positioning core shaft (5) and the mounting sleeve (6) to prevent dirt from entering, and the first sealing ring (53) is sleeved on the cylindrical area.

9. The fixture for composite processing of cylinder inner hole and blade groove according to claim 7, characterized in that: Positioning pieces (52) for angle positioning are respectively provided at both ends of the positioning core shaft (5).

10. The fixture for composite processing of cylinder inner hole and blade groove according to claim 1, characterized in that: The elastic part (51) is in a circular petal shape, and the diameter of the elastic part (51) is greater than the diameter of the inner circle of the workpiece.

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