Four-axis machining shell-shaped part fixing clamp

Abstract

The utility model discloses a four-axis machining shell-shaped part fixing clamp which comprises a base, a clamping device and a clamping device. The base is provided with a plurality of installation bolt holes. The two stand columns are arranged on the base; the two ends of the fixing piece are rotatably arranged on the two stand columns; the fixing piece is provided with an annular groove for containing the end face of the shell-shaped piece. The bottom supporting assembly is arranged on the base, located under the fixing piece and capable of being lifted to be close to or away from the fixing piece; the top suction assembly is arranged on the fixing piece and used for sucking the inner side face of the shell-shaped piece contained in the annular groove; and the overturning control assembly is arranged on the base and is used for controlling overturning and limiting of the fixing part. The clamp can clamp and fix the inner shell-shaped surface and the outer shell-shaped surface of the shell-shaped piece at a time to complete the machining of the inner shell-shaped surface and the outer shell-shaped surface.

Description

Technical Field

[0001] The utility model relates to the field of fixing jigs, and particularly relates to a four-axis processing fixing jig for shell-shaped parts. Background Art

[0002] Due to the shape characteristics and end face structure form of the shell-shaped parts, conventional clamping and fixing methods such as flat plates and points cannot achieve effective fixing. Therefore, during the production and processing process, the clamping accuracy is not high, and the clamping stability is poor. Therefore, generally, a single curved surface seat is used to fit the outer shell surface of the shell-shaped part as the clamping and fixing structure form. However, when machining the inner or outer shell surface of the shell-shaped part to be processed, this method cannot be used, and different clamping jigs need to be converted to realize the machining of the inner and outer shell surfaces. The two clamps will lead to a reduction in machining accuracy, and at the same time, the operation process is increased, significantly reducing the production efficiency. Summary of the Utility Model

[0003] In view of the above-mentioned defects of the prior art, the purpose of the present utility model is to provide a four-axis processing fixing jig for shell-shaped parts, which can complete the machining of the inner shell surface and the outer shell surface of the shell-shaped part by one-time clamping and fixing.

[0004] The purpose of the present utility model is realized by such a technical solution:

[0005] A four-axis processing fixing jig for shell-shaped parts, comprising:

[0006] A base, provided with a plurality of mounting bolt holes;

[0007] Two columns, arranged on the base;

[0008] A fixing member, rotatably arranged at both ends on the two columns; an annular groove for accommodating the end face of the shell-shaped part is provided on the fixing member;

[0009] A bottom support assembly, arranged on the base, located directly below the fixing member, and can be lifted to approach or away from the fixing member;

[0010] A top suction assembly, arranged on the fixing member, for sucking the inner side surface of the shell-shaped part accommodated in the annular groove;

[0011] A flipping control assembly, arranged on the base, for flipping and limiting control of the fixing member.

[0012] Further, the fixing member includes:

[0013] A tail rod, sleeved in the column through a rotary bearing;

[0014] A head rod, sleeved in the other column through a rotary bearing; the head rod and the tail rod are coaxial;

[0015] A fixed ring, located between two columns, is fixedly connected to the tail rod and the head rod; an annular groove is provided on the upper surface of the fixed ring; the bottom support assembly is arranged directly below the fixed ring;

[0016] An inner rod is arranged inside the fixed ring, and both ends are fixedly connected to the inner wall of the fixed ring; the top suction assembly is arranged on the inner rod.

[0017] Further, a chamfer is provided between the inner wall of the annular groove and the upper surface of the fixed ring; a buffer coating is applied to the inner wall of the annular groove.

[0018] Further, the bottom support assembly includes:

[0019] At least three bottom support cylinders are vertically arranged upward on the base;

[0020] A bottom support plate is horizontally arranged at the upper end of the bottom support cylinder;

[0021] A bottom support cushion layer is arranged on the upper surface of the bottom support plate; the bottom support cushion layer has a certain elastic deformation ability.

[0022] Further, the top suction assembly includes:

[0023] A top suction cylinder is arranged on the inner rod and is perpendicular to the bottom plate;

[0024] A suction cup is arranged at the telescopic end of the top suction cylinder, and the suction cup is communicated with a negative pressure device.

[0025] Further, the top suction assembly further includes a rotary cylinder, and the rotary cylinder is fixedly connected to the inner rod; the axis of the rotary cylinder is parallel to the axis of the head rod; the top suction cylinder is arranged on the rotary end of the rotary cylinder.

[0026] Further, the inner rod includes a left rod and a right rod, and the left rod and the right rod are respectively fixedly connected to the fixed ring, and the left rod and the right rod are collinear with the head rod; a gap is left between the left rod and the right rod;

[0027] There are two rotary cylinders in the top suction assembly; the two rotary cylinders are relatively arranged on the left rod and the right rod respectively and are located in the gap between the left rod and the right rod; the rotation axes of the two rotary cylinders are collinear with the axis of the head rod;

[0028] The top suction assembly further includes a top suction seat, and the top suction seat is connected to the rotary ends of the two rotary cylinders; the top suction cylinder is arranged on the top suction seat.

[0029] Further, the flipping control assembly includes:

[0030] Four control plates are respectively arranged on both sides of the head rod and the tail rod, and the plate surface of the control plate is parallel to the plane where the bottom of the annular groove of the fixed ring is located;

[0031] Four control cylinders are arranged on the base and are directly below the four control plates; the end face of the telescopic end of the control cylinder is spherical; an anti-impact coating is applied to the end face of the telescopic end of the control cylinder.

[0032] Furthermore, it further includes a flipping drive assembly, and the flipping drive assembly includes a handwheel which is arranged at the end of the fixing member and is located outside the column.

[0033] Furthermore, it further includes a flipping drive assembly, and the flipping drive assembly includes a servo motor which is arranged on the base, and the rotating end is connected to the fixing member to control the rotation of the fixing member in the column.

[0034] Due to the adoption of the above technical solutions, the present utility model has the following advantages:

[0035] 1. Limit the end face of the shell-shaped part. When machining the inner shell-shaped surface of the shell-shaped part, use the bottom support assembly combined with the fixing member to limit the end face of the shell-shaped part to achieve complete limit fixation of the shell-shaped part, and it does not affect the machining of the inner shell-shaped surface of the shell-shaped part. When machining the outer shell-shaped surface of the shell-shaped part, use the top suction assembly to adsorb the inner wall of the shell-shaped part, and then combine with the fixing member to limit the end face of the shell-shaped part to achieve complete limit fixation of the shell-shaped part, and it does not affect the machining of the outer shell-shaped surface of the shell-shaped part.

[0036] 2. When machining the inner shell-shaped surface and the outer shell-shaped surface of the shell-shaped part respectively, by flipping the fixing member, control the orientation of the surface to be machined, which is convenient for the four-axis machining equipment to machine, reduces the machining difficulty, and improves the machining efficiency. After flipping, ensure the stability after flipping through the flipping control assembly to ensure the machining accuracy.

[0037] 3. When machining the inner shell-shaped surface and the outer shell-shaped surface of the shell-shaped part, there is no need to take out the shell-shaped part from the present utility model, which reduces the operation procedures. At the same time, it reduces the clamping deviation caused by multiple clamping fixations and ensures a certain machining accuracy.

[0038] Other advantages, objectives and features of the present utility model will be described to some extent in the subsequent description, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The brief description of the drawings of the present utility model is as follows:

[0040] Figure 1 It is a front view structural schematic diagram of the four-axis machining shell-shaped part fixing fixture in Embodiment 1.

[0041] Figure 2 is Figure 1 the top view structural schematic diagram of.

[0042] Figure 3 is Figure 1 the schematic structural view of the A-A section in

[0043] Figure 4 the front view structural schematic diagram of the fixed fixture for the four-axis machining of the shell-shaped part 8 in the first embodiment after clamping the shell-shaped part (when machining the inner shell-shaped surface of the shell-shaped part).

[0044] Figure 5 is Figure 4 the top view structural schematic diagram of

[0045] Figure 6 the front view structural schematic diagram of the fixed fixture for the four-axis machining of the shell-shaped part 8 in the first embodiment after clamping the shell-shaped part (when machining the outer shell-shaped surface of the shell-shaped part).

[0046] Figure 7 is Figure 6 the top view structural schematic diagram of

[0047] Figure 8 is Figure 7 the schematic structural view of the B-B section in

[0048] Figure 9 is Figure 8 the enlarged structural schematic diagram at C in

[0049] Figure 10 is Figure 8 the enlarged structural schematic diagram at D in

[0050] Figure 11 the front view structural schematic diagram of the fixed fixture for the four-axis machining of the shell-shaped part in the second embodiment.

[0051] In the figure: 1. Base; 11. Mounting bolt holes; 2. Column; 31. Tail rod; 32. Head rod; 33. Fixed ring; 331. Annular groove; 332. Buffer coating; 341. Left rod; 342. Right rod; 41. Bottom support cylinder; 42. Bottom support plate; 43. Bottom support cushion; 51. Top suction cylinder; 52. Suction cup; 53. Rotary cylinder; 54. Top suction seat; 61. Control board; 62. Control cylinder; 71. Handwheel; 72. Servo motor; 8. Shell-shaped part. Specific embodiments

[0052] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0053] Embodiment 1:

[0054] As Figures 1 to 10 shown, a fixed fixture for the four-axis machining of a shell-shaped part 8 includes:

[0055] A base 1 provided with a plurality of mounting bolt holes 11;

[0056] Two columns 2 are provided on the base 1;

[0057] A fixing member, the two ends of which are rotatably provided on the two columns 2; an annular groove 331 for accommodating the end face of the shell-shaped member 8 is provided on the fixing member;

[0058] A bottom support assembly is provided on the base 1, directly below the fixing member, and can be lifted up and down to approach or move away from the fixing member;

[0059] A top suction assembly is provided on the fixing member to adsorb the inner side surface of the shell-shaped member 8 accommodated in the annular groove 331;

[0060] A flipping control assembly is provided on the base 1 to control the flipping and limit of the fixing member.

[0061] The end face of the shell-shaped member 8 is limited. When machining the inner shell-shaped surface of the shell-shaped member 8, the bottom support assembly is combined with the fixing member to limit the end face of the shell-shaped member 8 to realize complete limit fixation of the shell-shaped member 8, and it does not affect the machining of the inner shell-shaped surface of the shell-shaped member 8. When machining the outer shell-shaped surface of the shell-shaped member 8, the top suction assembly adsorbs the inner wall of the shell-shaped member 8, and then the end face of the shell-shaped member 8 is limited by combining with the fixing member to realize complete limit fixation of the shell-shaped member 8, and it does not affect the machining of the outer shell-shaped surface of the shell-shaped member 8.

[0062] When machining the inner shell-shaped surface and the outer shell-shaped surface of the shell-shaped member 8 respectively, by flipping the fixing member, the orientation of the surface to be machined is controlled, which is convenient for the four-axis machining equipment to machine, reduces the machining difficulty, and improves the machining efficiency. After flipping, the flipping control assembly ensures the stability after flipping and guarantees the machining accuracy.

[0063] In this embodiment, the fixing member includes:

[0064] A tail rod 31, which is sleeved in the column 2 through a rotary bearing inner ring;

[0065] A head rod 32, which is sleeved in the other column 2 through a rotary bearing inner ring; the head rod 32 and the tail rod 31 are coaxial;

[0066] A fixing ring 33 is located between the two columns 2 and is fixedly connected to the tail rod 31 and the head rod 32; an annular groove 331 is provided on the upper surface of the fixing ring 33; the bottom support assembly is provided directly below the fixing ring 33;

[0067] An inner rod is provided in the fixing ring 33, and both ends are fixedly connected to the inner wall of the fixing ring 33; the top suction assembly is provided on the inner rod.

[0068] In this embodiment, a chamfer is provided on the inner wall of the annular groove 331 and the upper surface of the fixing ring 33; a buffer coating 332 is coated on the inner wall of the annular groove 331.

[0069] The buffer coating 332 can be made of a relatively thin rubber material with a certain elasticity to avoid damaging the end face of the shell-shaped part 8 and also avoid damaging the annular groove 331.

[0070] In this embodiment, the bottom support assembly includes:

[0071] At least three bottom support cylinders 41, vertically arranged upward on the base 1;

[0072] A bottom support plate 42, horizontally arranged at the upper end of the bottom support cylinder 41;

[0073] A bottom support cushion layer 43, arranged on the upper surface of the bottom support plate 42; the bottom support cushion layer 43 has a certain elastic deformation ability.

[0074] The bottom support cushion layer 43 is made of rubber with a relatively high hardness and a relatively large elastic coefficient, and is not easy to damage the shell-shaped part 8 when supporting and extruding the shell-shaped part 8. At the same time, its deformation ability can make it properly fit the shell-shaped surface of the shell-shaped part 8 to ensure the stability of the support.

[0075] In this embodiment, the top suction assembly includes:

[0076] A top suction cylinder 51, arranged on the inner rod, perpendicular to the bottom plate;

[0077] A suction cup 52, arranged on the telescopic end of the top suction cylinder 51, and the suction cup 52 is communicated with a negative pressure device.

[0078] The top suction cylinder 51 can contract, so that the suction cup 52 is separated from the inner shell-shaped surface of the shell-shaped part 8, providing a certain machining space for the four-axis machining tool.

[0079] In this embodiment, the top suction assembly further includes a rotary cylinder 53, and the rotary cylinder 53 is fixedly connected to the inner rod; the axis of the rotary cylinder 53 is parallel to the axis of the head rod 32; the top suction cylinder 51 is arranged on the rotary end of the rotary cylinder.

[0080] The rotary cylinder 53 can move the top suction cylinder 51 away from the inside of the shell-shaped part 8, providing more machining space for the four-axis machining tool.

[0081] In this embodiment, the inner rod includes a left rod 341 and a right rod 342. The left rod 341 and the right rod 342 are respectively fixedly connected to the fixed ring 33, and the left rod 341 and the right rod 342 are collinear with the head rod 32; there is a gap between the left rod 341 and the right rod 342;

[0082] There are two rotary cylinders 53 in the top suction assembly; the two rotary cylinders 53 are relatively arranged on the left rod 341 and the right rod 342 respectively, located in the gap between the left rod 341 and the right rod 342; the rotation axes of the two rotary cylinders 53 are collinear with the axis of the head rod 32;

[0083] The top suction assembly further includes a top suction base 54, and the top suction base 54 is connected to the rotating ends of two rotating cylinders 53; the top suction cylinder 51 is arranged on the top suction base 54.

[0084] By arranging the two rotating cylinders 53 oppositely and controlling the top suction cylinder 51 simultaneously, the adsorption stability of the top suction cylinder 51 on the inner wall of the shell-shaped part 8 can be made more stable. And it can be achieved that the top suction cylinder 51 and the inner rod are coplanar, reducing the occupation of space, lowering the tool path difficulty of the four-axis machining tool, and at the same time ensuring the center of the shell-shaped part 8 in the adsorption area of the suction cup 52, so that the shell-shaped part 8 is more stable in the clamping process.

[0085] In this embodiment, the flipping control assembly includes:

[0086] Four control plates 61, which are respectively arranged on both sides of the head rod 32 and the tail rod 31, and the plate surface of the control plate 61 is parallel to the plane where the bottom of the annular groove 331 of the fixed ring 33 is located;

[0087] Four control cylinders 62, which are arranged on the base 1 and are located directly below the four control plates 61; the end face of the telescopic end of the control cylinder 62 is spherical; an anti-impact coating is coated on the end face of the telescopic end of the control cylinder 62.

[0088] By restricting the rotation of the head rod 32 and the tail rod 31 through the four control plates 61, the anti-impact coating can be an ultra-thin silicone coating.

[0089] In this embodiment, a flipping drive assembly is further included, and the flipping drive assembly includes a handwheel 71, which is arranged at the end of the fixing member and is located outside the column 2.

[0090] The four-axis machining shell-shaped part 8 fixing fixture in this embodiment is used as follows: control all the control cylinders 62 to shorten, use the handwheel 71 to turn the annular groove 331 on the fixed ring 33 upwards, and then control the four control cylinders 62 to extend to make the fixed ring 33 horizontal.

[0091] Buckling the shell-shaped part 8 to be machined into the annular groove 331, then controlling the rotating cylinder 53 to rotate until the top suction cylinder 51 is vertically upward, and then controlling the top suction cylinder 51 to extend so that the suction cup 52 is in close contact with and presses against the inner wall of the shell-shaped part 8, and then evacuating the air inside the suction cup 52 to make the suction cup 52 in a negative pressure state.

[0092] At this time, the clamping and fixing of the shell-shaped part 8 is completed, as Figures 6 - 10 shown, and then control the four-axis machining equipment to machine the outer surface of the shell-shaped part 8.

[0093] After the machining of the outer shell-shaped surface of the shell-shaped part 8 is completed, control the control cylinder 62 to shorten, then rotate the handwheel 71 so that the annular groove 331 of the fixing ring 33 faces downward, and control the synchronous rotation of the rotating cylinder 53 during this process. Then control the four control cylinders 62 to extend so that the fixing ring 33 is horizontal, as Figure 4 , 5 shown.

[0094] Subsequently, control the bottom support flagpole to extend so that the bottom support cushion layer 43 squeezes and supports the outer shell-shaped surface of the shell-shaped part 8. After the support of the shell-shaped part 8 is completed, inject air into the suction cup 52 so that the inside of the suction cup 52 is no longer in a negative pressure state, then control the top suction cylinder 51 to shorten, and then control the rotating cylinder 53 to rotate so that the top suction cylinder 51 is vertically upward, evacuating the internal space of the shell-shaped part 8. Finally, control the four-axis machining equipment to machine the inner shell-shaped surface of the shell-shaped part 8.

[0095] After the machining of the inner shell-shaped surface of the shell-shaped part 8 is completed, control the bottom support cylinder 41 to shorten to remove the machined shell-shaped part 8, or reverse the above steps to reset the shell-shaped part 8 to the Figure 6 positive buckle state shown and then remove it.

[0096] Embodiment 2:

[0097] As Figure 11 shown, the difference between this embodiment and Embodiment 1 is only that the flipping drive assembly includes a servo motor 72, which is arranged on the base 1, and the rotating end is connected to the fixing member to control the rotation of the fixing member in the column 2.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the present technical solution, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A four-axis shell-shaped part fixing fixture, characterized in that: include: A base having a plurality of mounting bolt holes; Two upright posts are arranged on the base; A fixing member, with two ends rotatably arranged on two pillars; the fixing member is provided with an annular groove for accommodating the end surface of the shell-shaped member; The bottom support assembly is arranged on the base and is located directly below the fixing member, and can be raised or lowered to move closer to or away from the fixing member; A top suction component is arranged on the fixing member and sucks the inner side surface of the shell-shaped member accommodated in the annular groove; The flip control component is arranged on the base and controls the flipping and limiting of the fixing part.

2. The four-axis shell-shaped part fixing fixture according to claim 1, characterized in that: The fixing member comprises: The tail rod is sleeved in the column through a slewing bearing; A head rod is sleeved in another column through a slewing bearing; the head rod and the tail rod are coaxial; A fixing ring is located between the two columns and is fixedly connected to the tail rod and the head rod; an annular groove is provided on the upper surface of the fixing ring; and the bottom support assembly is arranged directly below the fixing ring; The inner rod is arranged in the fixing ring, and both ends are fixedly connected to the inner wall of the fixing ring; the top suction component is arranged on the inner rod.

3. The four-axis shell-shaped part fixing fixture according to claim 2, characterized in that: The inner wall of the annular groove and the upper surface of the fixing ring are provided with chamfers; the inner wall of the annular groove is coated with a buffer coating.

4. The four-axis shell-shaped component fixing fixture according to claim 2, characterized in that: The bottom support assembly comprises: At least three bottom support cylinders are vertically upwardly arranged on the base; A bottom support plate is horizontally arranged at the upper end of the bottom support cylinder; The bottom support cushion layer is arranged on the upper surface of the bottom support plate; the bottom support cushion layer has a certain elastic deformation ability.

5. The four-axis shell-shaped part fixing fixture according to claim 2, characterized in that: The top suction assembly includes: The top suction cylinder is located on the inner rod and is perpendicular to the bottom plate; The suction cup is arranged on the telescopic end of the top suction cylinder, and the suction cup is connected with the negative pressure equipment.

6. The four-axis shell-shaped component fixing fixture according to claim 5, characterized in that: The top suction assembly also includes a rotating cylinder, which is fixedly connected to the inner rod; the axis of the rotating cylinder is parallel to the axis of the head rod; and the top suction cylinder is arranged on the rotating end of the rotating cylinder.

7. The four-axis shell-shaped component fixing fixture according to claim 6, characterized in that: The inner rod comprises a left rod and a right rod, the left rod and the right rod are respectively fixed to the fixing ring, the left rod and the right rod are collinear with the head rod; a gap is left between the left rod and the right rod; There are two rotating cylinders in the top suction assembly; the two rotating cylinders are respectively arranged on the left rod and the right rod in a relative manner and are located in the gap between the left rod and the right rod; the rotating axes of the two rotating cylinders are colinear with the axis of the head rod; The top suction assembly also includes a top suction seat, which is connected to the rotating ends of two rotating cylinders; the top suction cylinder is arranged on the top suction seat.

8. The four-axis shell-shaped component fixing fixture according to claim 2, characterized in that: The flip control component comprises: Four control plates are respectively arranged on both sides of the head rod and the tail rod, and the plate surfaces of the control plates are parallel to the plane where the bottom of the annular groove of the fixing ring is located; Four control cylinders are arranged on the base and are located directly below the four control panels; the end faces of the telescopic ends of the control cylinders are spherical; and the end faces of the telescopic ends of the control cylinders are coated with an anti-impact coating.

9. The four-axis shell-shaped component fixing fixture according to any one of claims 1 to 8, characterized in that: It also includes a flip driving assembly, which includes a hand wheel, which is arranged at the end of the fixing member and located outside the column.

10. The four-axis shell-shaped component fixing fixture according to any one of claims 1 to 8, characterized in that: It also includes a flip driving component, which includes a servo motor arranged on a base, a rotating end of which is connected to a fixing member to control the rotation of the fixing member in the column.

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