Self-adaptive automatic accurate positioning tool suitable for large blank pipe

Abstract

A self-adaptive automatic accurate positioning tool suitable for large blank pipes comprises an inner wall left positioning and transferring mechanism, an inner wall right positioning and transferring mechanism is arranged on the right side of the inner wall left positioning and transferring mechanism, and a compensation positioning clamping jaw mechanism is arranged between the inner wall left positioning and transferring mechanism and the inner wall right positioning and transferring mechanism. The compensation positioning clamping jaw mechanism comprises a fixing plate, four Z-axis linear bearings are arranged in the fixing plate, a lifting plate is arranged above the fixing plate, the lower side of the lifting plate is connected with four Z-axis lifting guide rods, the Z-axis lifting guide rods downwards penetrate through the Z-axis linear bearings respectively, a Z-axis pneumatic clamping device is arranged in the fixing plate, the lower side of the lifting plate is connected with Z-axis positioning guide rods, and the Z-axis pneumatic clamping device is connected with the Z-axis positioning guide rods. The Z-axis positioning guide rod penetrates through the Z-axis pneumatic clamp downwards, and the Z-axis lifting guide rod is sleeved with a Z-axis compensation spring. According to the utility model, the inner wall of the petroleum gun barrel is firstly positioned, and then the outer wall of the gun barrel is fixed through X-axis and Z-axis compensation, so that the blank surface of the outer wall of the petroleum gun barrel is accurately positioned and clamped.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical field especially, relates to automatic assembly positioning frock clamp, and particularly to a kind of self-adapting automatic accurate positioning frock suitable for large blank pipe. BACKGROUND

[0002] In prior art, the assembly of petroleum gun barrel is mostly manual assembly, and the product is manually assembled without positioning after being placed on the assembly frame by the operator.

[0003] The technical problem to be solved by prior art is:

[0004] 1) the operation mode is manual assembly, the product is not positioned, and automatic positioning and clamping of the product cannot be realized, so that automatic production cannot be realized.

[0005] 2) the outer wall of the barrel is blank surface, and accurate positioning of the outer wall of the barrel is difficult.

[0006] 3) the barrel has a variety of length and diameter derivative products, and the frock is difficult to solve the product compatible production problem. SUMMARY

[0007] The utility model aims at providing a kind of self-adapting automatic accurate positioning frock suitable for large blank pipe, and the self-adapting automatic accurate positioning frock suitable for large blank pipe solves the technical problems of not being able to realize automatic positioning and clamping, accurate positioning of the outer wall of the barrel being difficult and being difficult to solve the product compatible production in prior art.

[0008] The self-adapting automatic accurate positioning frock suitable for large blank pipe of the utility model includes inner wall left positioning displacement mechanism, inner wall right positioning displacement mechanism is arranged in the right of inner wall left positioning displacement mechanism, the power output end of inner wall left positioning displacement mechanism is connected with inner wall left guide positioning block and left support of feeding auxiliary, the right end of left support of feeding auxiliary is located in the right of inner wall left guide positioning block, the power output end of inner wall right positioning displacement mechanism is connected with inner wall right guide positioning block and right support of feeding auxiliary, the left end of right support of feeding auxiliary is located in the left of inner wall right guide positioning block, the right end of inner wall left guide positioning block and the left end of inner wall right guide positioning block are all provided with positioning cone surface.

[0009] The compensation positioning clamp mechanism is arranged between the inner wall left positioning and moving mechanism and the inner wall right positioning and moving mechanism, and comprises a fixed plate, four supporting feet are arranged at the bottom of the fixed plate, four first through holes are arranged in the fixed plate, one Z-axis linear bearing is arranged in each of the through holes, a lifting plate is arranged above the fixed plate, four Z-axis lifting guide rods are connected to the lower side of the lifting plate, the Z-axis lifting guide rods pass through the Z-axis linear bearings downwards, a second through hole is arranged in the fixed plate, a Z-axis pneumatic clamp is arranged in the second through hole, a Z-axis positioning guide rod is connected to the lower side of the lifting plate, the Z-axis positioning guide rods pass through the Z-axis pneumatic clamp downwards respectively, Z-axis compensation springs are respectively arranged on the Z-axis lifting guide rods between the lifting plate and the fixed plate, X-axis guide rails are arranged on the lifting plate in the front-rear direction, X-axis sliders are arranged on the X-axis guide rails, a moving seat is arranged on the X-axis sliders, an X-axis pneumatic clamp is arranged between the moving seat and the X-axis guide rails, a fixed seat is arranged on the lifting plate on the front-rear sides of the moving seat, a guide rod is connected between the two fixed seats and passes through the moving seat, X-axis front and rear compensation springs are arranged on the guide rod between the moving seat and the two fixed seats, and a secondary positioning air claw is arranged on the moving seat, and the power output end of the secondary positioning air claw is connected with a secondary positioning clamp.

[0010] The control ends of the inner wall left positioning and moving mechanism, the inner wall right positioning and moving mechanism, the Z-axis pneumatic clamp, the X-axis pneumatic clamp and the secondary positioning air claw are connected with a controller.

[0011] Further, the inner wall left positioning and moving mechanism comprises a servo motor, a screw rod follow-up support, a screw rod and a moving guide rail, a moving platform is arranged on the moving guide rail, the output shaft of the servo motor is connected with the input shaft of a planetary reducer, the output shaft of the planetary reducer is connected with one end of the screw rod through a shaft coupling, the other end of the screw rod is connected with the follow-up support, a threaded hole is arranged in the moving platform and the screw rod passes through the threaded hole, a sensor sensing sheet is arranged on the moving platform, and a left limit sensor and a right limit sensor are arranged at the left limit position and the right limit position of the moving platform respectively.

[0012] Further, the inner wall right positioning and moving mechanism comprises a moving cylinder and a moving guide rail, a guide rail slider is arranged on the moving guide rail, the piston rod of the moving cylinder is connected with the guide rail slider, and a moving platform is arranged on the guide rail slider.

[0013] Compared with the prior art, the effect of the utility model is positive and obvious.

[0014] 1. By positioning the inner wall of the oil gun tube first, then performing self-adaptive X-axis and Z-axis compensation to fix the outer wall of the gun tube, the precise positioning and clamping of the outer wall blank surface of the oil gun tube are realized.

[0015] 2. The automatic tooling of the utility model, completely is controlled by PLC, need not operating personnel operation, high degree of automation.

[0016] 3. Follow the flexible production principle, utilize the inner wall right positioning displacement mechanism and the inner wall left positioning displacement mechanism can satisfy the production of the same series multiple length and diameter gun tube derivative product, make the industrial production cost reduce, the economic benefit improves.

[0017] 4. In addition to being used for oil gun tube, can also be extended to other large blank pipe workpieces. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a front view schematic drawing of the self-adapting automatic accurate positioning tooling suitable for large blank pipes of the utility model.

[0019] Figure 2 It is a perspective schematic drawing of the self-adapting automatic accurate positioning tooling suitable for large blank pipes of the utility model.

[0020] Figure 3 It is a compensation positioning clamping jaw mechanism schematic drawing in the self-adapting automatic accurate positioning tooling suitable for large blank pipes of the utility model.

[0021] Figure 4 It is an inner wall left positioning displacement mechanism schematic drawing in the self-adapting automatic accurate positioning tooling suitable for large blank pipes of the utility model.

[0022] Figure 5 It is an inner wall right positioning displacement mechanism schematic drawing in the self-adapting automatic accurate positioning tooling suitable for large blank pipes of the utility model. PREFERRED EMBODIMENT

[0023] The utility model is further described below in combination with embodiments, but the utility model is not limited to the embodiment, and any similar change using the utility model should be included in the protection scope of the utility model. The use of the directions such as upper, lower, front, back, left, right, middle, inner and outer in the utility model is only for the convenience of clear description, and not for the limitation of the technical scheme of the utility model.

[0024] For example, Figures 1-5As shown, the utility model discloses a kind of self-adapting automatic accurate positioning tool suitable for large blank pipe, including inner wall left positioning displacement mechanism 12, inner wall left positioning displacement mechanism 12 right side is provided with inner wall right positioning displacement mechanism 6, the power output end of inner wall left positioning displacement mechanism 12 is connected with inner wall left guide positioning block 14 and left support 13 of feeding auxiliary, the right end of left support 13 of feeding auxiliary is located in the right side of inner wall left guide positioning block 14, the power output end of inner wall right positioning displacement mechanism 6 is connected with inner wall right guide positioning block 4 and right support 5 of feeding auxiliary, the left end of right support 5 of feeding auxiliary is located in the left side of inner wall right guide positioning block 4, the right end of inner wall left guide positioning block 14, the left end of inner wall right guide positioning block 4 are all provided with positioning cone surface 40;

[0025] The compensation positioning clamp mechanism is provided between the inner wall left positioning displacement mechanism 12 and the inner wall right positioning displacement mechanism 6, and the compensation positioning clamp mechanism includes a fixed plate 45, four supporting feet are arranged at the bottom of the fixed plate 45, four first through holes are arranged in the fixed plate 45, one Z-axis linear bearing 8 is arranged in each of the through holes, a lifting plate 46 is arranged above the fixed plate 45, four Z-axis lifting guide rods 15 are connected to the lower side of the lifting plate 46, the Z-axis lifting guide rods 15 pass through the Z-axis linear bearings 8 downward, a second through hole is arranged in the fixed plate 45, a Z-axis pneumatic clamp device 9 is arranged in the second through hole, a Z-axis positioning guide rod 20 is connected to the lower side of the lifting plate 46, the Z-axis positioning guide rods 20 pass through the Z-axis pneumatic clamp devices 9 downward respectively, a Z-axis compensation spring 7 is sleeved on each of the Z-axis lifting guide rods 15 between the lifting plate 46 and the fixed plate 45, an X-axis guide rail 10 is arranged on the lifting plate 46 in the front-rear direction, an X-axis sliding block 19 is arranged on the X-axis guide rail 10, a moving seat 47 is arranged on the X-axis sliding block 19, an X-axis pneumatic clamp device 11 is arranged between the moving seat 47 and the X-axis guide rail 10, a fixed seat 16 is arranged on the lifting plate 46 on the front and rear sides of the moving seat 47 respectively, a guide rod is connected between the two fixed seats 16, the guide rod is arranged in the moving seat 47, an X-axis front compensation spring 17 and an X-axis rear compensation spring 18 are arranged on the guide rod between the moving seat 47 and the two fixed seats 16, a secondary positioning air claw 2 is arranged on the moving seat 47, and the power output end of the secondary positioning air claw 2 is connected to a secondary positioning clamp 3.

[0026] The control ends of the inner wall left positioning displacement mechanism 12, the inner wall right positioning displacement mechanism 6, the Z-axis pneumatic clamp device 9, the X-axis pneumatic clamp device 11, and the secondary positioning air claw 2 are connected to a controller.

[0027] Furthermore, the inner wall left positioning and transfer mechanism 12 includes a servo motor 30, a lead screw follower support 39, a lead screw 37, and a moving guide rail 36. A moving platform 33 is provided on the moving guide rail 36. The output shaft of the servo motor 30 is connected to the input shaft of the planetary reducer 31. The output shaft of the planetary reducer 31 is connected to one end of the lead screw 37 through a coupling 32. The other end of the lead screw 37 is connected to the follower support 39. A threaded hole is provided in the moving platform 33, and the lead screw 37 passes through the threaded hole. A sensor sensing plate 35 is provided on the moving platform 33. A left limit sensor 38 and a right limit sensor 34 are respectively provided at the left limit position and the right limit position of the moving platform 33.

[0028] Furthermore, the inner wall right positioning and transfer mechanism 6 includes a transfer cylinder 41 and a moving guide rail 42. A guide rail slider 43 is provided on the moving guide rail 42. The piston rod of the transfer cylinder 41 is connected to the guide rail slider 43. A moving platform 44 is provided on the guide rail slider 43.

[0029] Specifically, in this embodiment, the Z-axis linear bearing 8, Z-axis pneumatic clamp 9, X-axis pneumatic clamp 11, secondary positioning gripper 2, secondary positioning chuck 3, controller, servo motor 30, planetary reducer 31, lead screw 37, sensor induction plate 35, left limit sensor 38, right limit sensor 34, transfer cylinder 41, etc., all adopt well-known solutions in the prior art, which are already known to those skilled in the art, and will not be described in detail here.

[0030] This tooling is designed primarily to achieve automated production and precise product positioning.

[0031] The working process of this embodiment:

[0032] 1. Process One. Automatic feeding (completed by external equipment): The external equipment automatically places the oil gun barrel 1 on the feeding auxiliary right support 5 and the feeding auxiliary left support 13;

[0033] 2. Process Two. Preliminary reference positioning and product compatibility: First, the inner wall right positioning and transfer mechanism 6 drives the inner wall right guide positioning block 4 to move to the reference position to the left. Then, the inner wall left positioning and transfer mechanism 12 drives the inner wall left guide positioning block 14 to move to the right. The positioning cone surfaces 40 of the inner wall right guide positioning block 4 and the inner wall left guide positioning block 14 are respectively positioned with the inner diameter machining reference at both ends of the oil gun tube 1, realizing the precise positioning of the inner diameter machining reference axis of the oil gun tube 1, laying the foundation for the precise positioning of the outer wall blank surface of the product.

[0034] By moving the inner wall right positioning and transfer mechanism 6 and the inner wall left positioning and transfer mechanism 12 left and right, the product compatibility problem can be solved by allowing for the production of various lengths and diameters of the oil gun barrel 1.

[0035] 3. Process three. The flexible compensation positioning of the outer wall of the barrel: the secondary positioning clamping jaw 3 is driven by the secondary positioning gas claw 2 to close and clamp the outer wall of the oil barrel 1.

[0036] According to the characteristics of the self-adaptive fixture, the X-axis pneumatic gripper 11 is in a pneumatic open state, and the X-axis slider 19 can slide freely along the front and rear X-axis direction on the X-axis guide rail 10. The secondary positioning clamping jaw 3 can be linked and compensated along the X-axis by the interaction force between the moving seat 47 and the X-axis front compensation spring 17 and the X-axis rear compensation spring 18 when clamping the product.

[0037] According to the characteristics of the self-adaptive fixture, the Z-axis pneumatic gripper 9 is in a pneumatic open state, and the Z-axis positioning guide rod 20 can be lifted freely, and the Z-axis lifting guide rod 15 can slide up and down in the Z-axis linear bearing 8. The secondary positioning clamping jaw 3 can be linked and compensated along the Z-axis by the interaction force between the lifting plate 46 and the Z-axis compensation spring 7 when clamping the product.

[0038] Subsequent action: the secondary positioning clamping jaw 3 clamps the outer wall of the oil barrel 1, and after the above-mentioned X-axis and Z-axis positioning compensation, the X-axis pneumatic gripper 11 tightly grips the X-axis guide rail 10, and the Z-axis pneumatic gripper 9 tightly grips the Z-axis positioning guide rod 20, thereby completing the precise positioning of the outer wall of the oil barrel 1; the inner wall left positioning displacement mechanism 12 and the inner wall right positioning displacement mechanism 6 are reset respectively, so that the inner wall left guide positioning block 14 and the inner wall right guide positioning block 4 are separated from the oil barrel 1.

[0039] Through the inner diameter machining reference axis positioning of the oil barrel 1, the secondary self-adaptive compensation clamps the outer wall blank surface of the oil barrel 1, and then finally limits and fixes the adaptive flexible linkage part, so that the precise positioning of the outer wall blank surface of the oil barrel 1 is realized.

[0040] The action process of the inner wall left positioning displacement mechanism 12 is as follows: the servo motor 30 drives the lead screw 37 to rotate, and drives the moving platform 33 to move accurately on the moving guide rail 36; the sensor sensing sheet 35 moves with the moving platform 33, can be sensed by the right limit sensor 34 and the left limit sensor 38, and the movement limit safety protection is realized.

[0041] The action process of the inner wall right positioning displacement mechanism 6 is as follows: the displacement cylinder 41 drives the moving platform 44 to move reciprocatingly on the moving guide rail 42.

[0042] The advantages of the utility model are as follows:

[0043] 1. The inner wall of the oil barrel 1 is first positioned, then the adaptive X-axis and Z-axis compensation is carried out, and the outer wall of the barrel is fixed, so that the precise positioning of the outer wall blank surface of the oil barrel 1 is realized.

[0044] 2. The automatic tool of the utility model is completely controlled by PLC, and does not need operating personnel to operate, and has high automation degree.

[0045] 3. Following the flexible production principle, the production of the gun barrel derivative products with various lengths and inner diameters in the same series can be met by using the right inner wall positioning and moving mechanism 6 and the left inner wall positioning and moving mechanism 12, so that the industrial production cost is reduced and the economic benefit is improved.

[0046] 4. In addition to being applicable to the oil gun barrel, the utility model can be extended to be applied to other large blank pipe workpieces.

Claims

1. A self-adapting automatic precision positioning tooling suitable for large blank pipes, characterized in that, The inner wall left positioning and moving mechanism is connected with an inner wall left guide positioning block and a left auxiliary feeding support, the right end of the left auxiliary feeding support is located to the right of the inner wall left guide positioning block, the power output end of the inner wall right positioning and moving mechanism is connected with an inner wall right guide positioning block and a right auxiliary feeding support, the left end of the right auxiliary feeding support is located to the left of the inner wall right guide positioning block, and the right end of the inner wall left guide positioning block and the left end of the inner wall right guide positioning block are both provided with a positioning cone surface. The compensation positioning clamp mechanism is arranged between the inner wall left positioning and moving mechanism and the inner wall right positioning and moving mechanism, and comprises a fixed plate, four supporting feet are arranged at the bottom of the fixed plate, four first through holes are arranged in the fixed plate, one Z-axis linear bearing is arranged in each of the through holes, a lifting plate is arranged above the fixed plate, four Z-axis lifting guide rods are connected to the lower side of the lifting plate, the Z-axis lifting guide rods pass through the Z-axis linear bearings downward, a second through hole is arranged in the fixed plate, a Z-axis pneumatic clamp is arranged in the second through hole, a Z-axis positioning guide rod is connected to the lower side of the lifting plate, the Z-axis positioning guide rods pass through the Z-axis pneumatic clamp downward respectively, Z-axis compensation springs are respectively arranged on the Z-axis lifting guide rods between the lifting plate and the fixed plate, an X-axis guide rail is arranged on the lifting plate in the front-rear direction, an X-axis sliding block is arranged on the X-axis guide rail, a moving seat is arranged on the X-axis sliding block, an X-axis pneumatic clamp is arranged between the moving seat and the X-axis guide rail, a fixed seat is arranged on the lifting plate on the left and right sides of the moving seat, a guide rod is connected between the two fixed seats and passes through the moving seat, and an X-axis front compensation spring and an X-axis rear compensation spring are arranged on the guide rod between the moving seat and the two fixed seats. The control ends of the inner wall left positioning and moving mechanism, the inner wall right positioning and moving mechanism, the Z-axis pneumatic clamp, the X-axis pneumatic clamp and the secondary positioning air claw are connected with a controller.

2. A self adaptive automatic precision positioning tooling suitable for large size blank pipe as claimed in claim 1, wherein, The inner wall left positioning and moving mechanism comprises a servo motor, a screw rod follow-up support, a screw rod and a moving guide rail, a moving platform is arranged on the moving guide rail, the output shaft of the servo motor is connected with the input shaft of the planetary reducer, the output shaft of the planetary reducer is connected with one end of the screw rod through a shaft coupling, the other end of the screw rod is connected with the follow-up support, a threaded hole is arranged in the moving platform, the screw rod passes through the threaded hole, a sensor sensing sheet is arranged on the moving platform, and a left limit sensor and a right limit sensor are arranged at the left limit position and the right limit position of the moving platform respectively.

3. A self adaptive automatic precision positioning tooling suitable for large blank tubes according to claim 1, characterized in that, The inner wall right positioning and moving mechanism comprises a moving cylinder and a moving guide rail, a guide rail sliding block is arranged on the moving guide rail, the piston rod of the moving cylinder is connected with the guide rail sliding block, and a moving platform is arranged on the guide rail sliding block.

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