Tool clamp for machining well-completion cable-passing eccentric body

Abstract

A tool clamp for machining a well completion cable passing eccentric body comprises a clamping mechanism, a rotating mechanism and a moving mechanism. A workpiece is horizontally fixed to the clamping mechanism, the lower end of the clamping mechanism is connected with the upper end of the rotating mechanism, and the rotating mechanism can rotate the clamping mechanism and the workpiece in the horizontal direction. The lower end of the rotating mechanism is slidably connected with the moving mechanism and reciprocates. By means of the clamping mechanism, the rotating mechanism and the moving mechanism, inclined hole machining operation of a well-completion cable-passing eccentric body is achieved, a workpiece can be machined on one tool, the machining operation process is remarkably simplified, machining precision and efficiency are improved, and production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical parts processing auxiliary tool, concretely relates to a processing well completion cable eccentric body's frock clamp. BACKGROUND

[0002] Well completion cable eccentric body workpiece is important spare part in petroleum exploration device, and its machining precision directly influences equipment performance and service life, the characteristics of this kind of workpiece are that the middle part is outer eccentric structure, the center axis of outer eccentric circle has certain offset relative to the center axis of workpiece, and both ends are right circle, and in the direction of 60 degree angle with the axis, a slant hole offset with the center axis of outer eccentric circle also needs to be processed, due to the complexity of workpiece structure, the slant hole processing is higher in precision and efficiency.

[0003] At present, aiming at the machining of well completion cable eccentric body workpiece, the following problems exist in the commonly used machining process:

[0004] 1. The slant hole processing needs to be completed on the numerical control four-axis machining center, and needs to be positioned by a separately designed clamp, and this process needs to frequently change the clamp, which not only consumes time, but also increases the operation complexity.

[0005] 2. The high-end five-axis machining center can complete the slant hole processing, but the equipment purchase cost is expensive, and it is not suitable for the factory using ordinary machining equipment in large-scale production.

[0006] 3. In the existing method, due to improper clamp switching and positioning, it is easy to cause machining precision fluctuation, especially the relative position between the outer eccentric surface and the slant hole is difficult to guarantee, and the product quality is reduced.

[0007] In view of the above problems, it is urgent to develop a frock clamp capable of realizing high-precision slant hole processing, simplify the operation process, reduce the clamp replacement frequency and equipment dependence, improve the machining precision and production efficiency, reduce the manufacturing cost, and adapt to the production requirements of various specifications of workpieces. UTILITY MODEL CONTENTS

[0008] The utility model discloses in order to solve the technical problems of complex operation, unstable precision, higher cost and the like, aims at providing a processing well completion cable eccentric body's frock clamp, can realize slant hole processing operation, has the characteristics such as high processing efficiency, simple operation, safe and reliable.

[0009] In order to achieve the above object, the utility model adopts the technical scheme that includes clamping mechanism, rotating mechanism and moving mechanism, workpiece is fixed horizontally on clamping mechanism, the lower end of clamping mechanism is connected with the upper end of rotating mechanism, and rotating mechanism can rotate clamping mechanism and workpiece in horizontal direction, and the lower end of rotating mechanism is slidably connected with moving mechanism and realizes reciprocating movement.

[0010] The clamping mechanism is composed of several clamping devices; the clamping device includes a slide rail seat and a pair of clamping blocks, the slide rail seat is provided with a slide rail, and the pair of clamping blocks move towards or away from each other along the slide rail to tighten or loosen the workpiece respectively. The clamping mechanism further includes a screw rod, the screw rod penetrates into the threaded hole on the slide rail seat, and the end of the screw rod is in contact with the clamping block; by screwing in or out of the screw rod, the clamping block is driven to move along the slide rail; the clamping block is provided with a scale.

[0011] The quick release mechanism is further provided, including a sleeve, a spring and a stepped shaft, the stepped shaft includes a first stepped shaft with a smaller diameter and a second stepped shaft with a larger diameter, the inner wall of the sleeve can be in interference fit with the second stepped shaft after the sleeve is sleeved on the stepped shaft, providing a main acting force to ensure fastening.

[0012] The inner wall of the sleeve is connected with the first stepped shaft through the spring, and the spring is compressed when the sleeve is inserted, providing part of the outward acting force to facilitate the disassembly of the workpiece.

[0013] The rotating mechanism includes a connecting frame and a Z-axis rotating mechanism, the clamping mechanism is fixed on the connecting frame, and the lower end of the connecting frame is driven by the Z-axis rotating mechanism to rotate or segmentally rotate around the Z-axis in the horizontal direction.

[0014] The connecting frame includes a horizontally arranged base frame, and the lower end of the base frame is connected with the upper end of the Z-axis rotating mechanism; the lower ends of the left frame and the right frame for fixing the two ends of the clamping mechanism are sleeved on the two ends of the base frame and can slide along the length direction of the base frame.

[0015] The two ends of the base frame are provided with T-shaped limiting structures for limiting the sliding stroke of the left frame and the right frame. The left frame and the right frame are connected by penetrating into the lock sleeve in opposite directions and can slide relative to each other.

[0016] The end of the left frame and the right frame is provided with an L-shaped limiting structure for limiting the sliding stroke. An angle scale is arranged on the connecting frame for reading the rotation angle.

[0017] The moving mechanism includes a positioning mechanism, a slide rail and a moving platform, the moving platform is arranged on the slide rail through the sliding block on the lower end surface thereof, and the motor of the positioning mechanism drives the moving platform to move along the slide rail through the lead screw.

[0018] The slide rail is arranged on a horizontal base plate, and the base plate is provided with a scale in the direction along which the slide rail extends.

[0019] The slide rail is two and parallel to each other.

[0020] The upper end surface of the slide rail is provided with a plurality of positioning holes, and the moving platform is provided with corresponding pins; the pins are connected with the positioning holes by penetrating through the moving platform to fix the moving platform.

[0021] Compared with the prior art, the utility model discloses through clamping mechanism, rotating mechanism and moving mechanism, realized to the integration of the eccentric machining of well completion overcable eccentric body and the inclined hole machining, with the workpiece can be processed operation on a tooling, significantly simplify processing operation process, improve the processing accuracy and efficiency, reduce production cost. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the structural schematic diagram of the embodiment of the utility model;

[0023] Figure 2a It is the structural schematic diagram of clamping mechanism;

[0024] Figure 2b It is the partial enlarged view of clamping device in figure 2;

[0025] Figure 2c It is the partial enlarged view of quick release mechanism in figure 2;

[0026] Figure 3 It is the structural schematic diagram of rotating mechanism;

[0027] Figure 4 It is the structural schematic diagram of moving mechanism;

[0028] Figure 5 It is the use state diagram of rotating mechanism in 60 ° rotation, moving mechanism in longitudinal movement;

[0029] Referring to the drawings, including clamping mechanism 1, clamping device 1-1, quick release mechanism 1-2, clamping device 1-3, sleeve 1-4, spring 1-5, stepped shaft 1-6, trapezoidal slide rail 1-7, clamping block 1-8, screw rod 1-9, slide rail seat 1-10;

[0030] Rotating mechanism 2, Z-axis rotating mechanism 2-1, connecting frame 2-2, bottom frame 2-3, left frame 2-4, left top frame 2-5, right top frame 2-6, right frame 2-7, lock sleeve 2-8;

[0031] Moving mechanism 3, positioning mechanism 3-1, slide rail 3-2, scale 3-3, bolt 3-4, positioning hole 3-5, moving platform 3-6. DETAILED DESCRIPTION

[0032] The specific embodiment of the utility model is described clearly and completely below in combination with the drawings.

[0033] Referring to Figures 1 to 4 , Figures 1 to 4The utility model discloses an embodiment of the utility model discloses a kind of processing well completion cable eccentric body's tool fixture, including clamping mechanism, rotating mechanism and moving mechanism;Workpiece is fixed horizontally on clamping mechanism, the lower end of clamping mechanism is connected with the upper end of rotating mechanism, and rotating mechanism can rotate clamping mechanism, workpiece in horizontal direction;The lower end of rotating mechanism is slidably connected with moving mechanism, and reciprocating movement is realized.

[0034] Referring to Figure 2a And 2b , clamping mechanism is composed of two clamping devices, and the two clamping devices are symmetrically arranged at the two ends of the workpiece. Referring to Figure 2b Each clamping device includes a pair of clamping blocks and a vertically arranged slide rail seat, the slide rail seat is provided with a slide rail, the slide rail is a trapezoidal slide rail, and the clamping blocks are provided with grooves corresponding to the trapezoidal shape to form a sliding mechanism with the slide rail. Each of the pair of clamping blocks is connected and driven by a screw rod. A fixed plate is arranged below the slide rail seat, the fixed plate is provided with a threaded hole corresponding to the screw rod, the screw rod body penetrates into the threaded hole upward, and the end of the screw rod is in contact with the lower end of the clamping block. By screwing the screw rod upward and downward, the clamping blocks are driven to move up and down along the length direction of the slide rail accurately, so that the workpiece is quickly clamped and released, and the effect of quickly adjusting the eccentric distance is achieved as preferred, referring to Figure 2b A scale is arranged on the clamping block, the eccentric distance can be directly read, and data reference is provided when the workpiece is clamped, so that the clamping accuracy is ensured, and the clamping adjustment operation is also simplified.

[0035] As preferred, referring to Figure 2c The clamping mechanism is also provided with a quick release mechanism, including a sleeve, a spring and a stepped shaft. After the sleeve (with an outer diameter larger than the fixed hole) is sleeved outside the stepped shaft, the inner wall of the sleeve cylinder and the outer wall of the second stepped shaft (with a larger diameter) of the stepped shaft are in interference fit, and a limiting force is generated, so that the left and right frames of the connecting frame are preliminarily fixed in the transverse direction and cannot be moved any more, so that the fastening of the connecting frame is ensured. At the same time, the sleeve also provides protection for the workpiece to prevent the chuck from being deformed when grabbing.

[0036] As preferred, the spring is arranged on the first stepped shaft (with a smaller diameter) of the stepped shaft and connected with the inner wall of the sleeve. The spring is compressed when the sleeve is inserted, and provides part of the outward force, so that the spring force is released when the workpiece is disassembled, and the operation is more convenient. The quick release mechanism can quickly clamp and release the workpiece through the cooperation of the spring and the stepped shaft, and has the effects of high efficiency and convenient operation.

[0037] When clamping the workpiece, loosen the screw rod, put the workpiece into the clamp, and then tighten the nut to complete the clamping. After processing is completed, the spring can eject the stepped shaft, so that the workpiece is separated from the sleeve, and the quick disassembly and assembly of the workpiece are realized.

[0038] Referring to Figure 3The rotating mechanism comprises a connecting frame, a Z-axis rotating mechanism, and a clamping mechanism. The workpiece is fixed on the connecting frame, the lower end of the connecting frame is driven by the Z-axis rotating mechanism, the Z-axis rotating mechanism is driven by an electric control device, the Z-axis rotating mechanism can rotate or segmentally rotate in the horizontal direction around the Z-axis (vertical direction) and the angle can be adjusted, and the machining requirement of inclined holes with different angles can be met.

[0039] Further, the connecting frame comprises a horizontally arranged base frame, the base frame is a rod body, the center of the lower end of the rod body is connected with the upper end of the Z-axis rotating mechanism. The left frame and the right frame are vertically arranged and distributed at the left end and the right end of the base frame. The lower end of the left frame and the right frame is respectively provided with a sliding hole, the sliding hole is respectively sleeved on the rod body of the base frame and can move along the rod body. The opening size of the connecting frame can be adjusted according to the length of the workpiece to be machined, so that workpieces with different lengths can be fixed. The middle part of the frame body of the left frame and the right frame is provided with a fixing hole for fixing the two ends of the clamping mechanism, a ball bearing is arranged in the fixing hole, and the two slide rail seats of the clamping device are respectively installed in the fixing holes of the left frame and the right frame through mounting shafts. The workpiece to be machined is clamped and fixed in the two clamping devices, and the machining angle can be adjusted through the rotation of the bearing.

[0040] Further, the two ends of the base frame are further provided with T-shaped limiting structures for limiting the sliding stroke of the left frame and the right frame, the horizontal part of the T-shaped limiting structure is perpendicular to the rod body of the base frame, and the use range of the left frame and the right frame can be limited. As a preferred embodiment, the left top frame and the right top frame are arranged along the horizontal direction, the rod bodies of the left top frame and the right top frame extend towards each other and penetrate into the lock sleeve from two directions to form a sliding connection, and form a frame structure with the left frame, the right frame and the base frame. When the left frame and the right frame move, the left top frame and the right top frame slide relative to the left frame and the right frame.

[0041] As a preferred embodiment, the end of the left top frame and the right top frame is provided with an L-shaped limiting structure for limiting the sliding stroke, which can ensure the stability of the sliding mechanism formed by the left top frame, the right top frame and the lock sleeve.

[0042] As a preferred embodiment, the connecting frame is provided with an angle scale for reading the rotation angle, which is used for manual calibration of the rotation angle. Referring to Figure 4 The moving mechanism comprises a positioning mechanism, a slide rail and a moving platform. The moving platform is a horizontal plate body and is arranged on the slide rail through two slide block frames on the lower end surface thereof. In the embodiment, the slide rail is two and parallel to each other. The lower end surface of the moving platform is further provided with a nut; the positioning mechanism is provided with a motor, the motor drives a horizontally arranged ball screw; and the nut and the ball screw cooperate to form a screw-nut mechanism. The ball screw is driven by the motor and can accurately pull the moving platform to move along the slide rail, thereby improving the positioning accuracy of machining.

[0043] Further, the upper end surface of the slide rail is provided with a plurality of positioning holes, and the moving platform is provided with corresponding bolts.

[0044] As preferred, a scale is arranged on the upper end surface of the base plate, and the scale is arranged along the extending direction of the slide rail, which can be used for manual correction of the moving distance.

[0045] Referring to Figure 5 As shown in the drawings, when processing the inclined hole, the worker first loosens the two clamping blocks by rotating the two screw rods, and then places the eccentric body workpiece to be processed in the clamping device, and can quickly determine the eccentric distance position by checking the scale on the reference clamping block, and then tightens the screw rod again to fix the workpiece; the workpiece is rotated around the Z axis to 60° by using the Z axis rotating mechanism, and then the ball screw of the positioning mechanism is driven by the motor to pull the moving platform to move longitudinally along the slide rail, and the moving platform can be adjusted to the accurate position according to the scale to reach the predetermined position, and then the bolt is inserted to limit the longitudinal movement position; then the sleeve is inserted, the sleeve is clamped by the machine tool chuck, and the other end of the clamping mechanism is clamped by the ejector pin, at this time, the workpiece position is completely fixed.

[0046] At this time, the position of the inclined hole to be processed is aligned with the tool feeding direction, and the tool can complete the processing of the inclined hole. After the processing is completed, the workpiece is reset to the 0° position by the Z axis rotating mechanism, and then the workpiece is taken down and separated from the clamp, and then the next round of processing is carried out.

[0047] The embodiments of the utility model are described above in combination with the drawings and the embodiments, and the structure given by the embodiments does not constitute a limitation on the utility model, and skilled persons in the art can make adjustments according to needs, and various deformations or modifications within the scope of the appended claims are within the protection scope.

Claims

1. A tooling fixture for processing a completion electrical cable eccentric body, characterized by: The device comprises a clamping mechanism, a rotating mechanism and a moving mechanism; a workpiece is horizontally fixed on the clamping mechanism, the lower end of the clamping mechanism is connected to the upper end of the rotating mechanism, the rotating mechanism can rotate the clamping mechanism and the workpiece in the horizontal direction; the lower end of the rotating mechanism is slidingly connected to the moving mechanism and realizes reciprocating movement.

2. The tooling fixture of claim 1, wherein: The clamping mechanism is composed of a plurality of clamping devices; each clamping device comprises a slide rail seat and a pair of clamping blocks, the slide rail seat is provided with a slide rail, and the pair of clamping blocks move towards or away from each other along the slide rail to tighten or loosen the workpiece respectively.

3. The tooling fixture of claim 2, wherein: The clamping mechanism further comprises a screw rod, the screw rod penetrates into a threaded hole in the slide rail seat, and the end of the screw rod is in contact with the clamping block; the clamping block is driven to move along the slide rail by screwing in or out of the screw rod; a scale is provided on the clamping block.

4. The tooling fixture of claim 2 or 3, wherein: A quick release mechanism is further provided, which comprises a sleeve, a spring and a stepped shaft, the stepped shaft comprises a first stepped shaft with a smaller diameter and a second stepped shaft with a larger diameter, and the inner wall of the sleeve can be in interference fit with the second stepped shaft after the sleeve is sleeved on the stepped shaft; and / or, the inner wall of the sleeve is connected to the first stepped shaft by the spring, and the spring is compressed when the sleeve is inserted.

5. The tooling fixture of claim 1, wherein: The rotating mechanism comprises a connecting frame and a Z-axis rotating mechanism, the clamping mechanism is fixed on the connecting frame, and the lower end of the connecting frame is driven by the Z-axis rotating mechanism to rotate or segmentally rotate in the horizontal direction around the Z-axis.

6. The tooling fixture of claim 5, wherein: The connecting frame comprises a horizontally arranged base frame, the lower end of the base frame is connected to the upper end of the Z-axis rotating mechanism; the lower ends of left and right frames for fixing the two ends of the clamping mechanism are sleeved on the two ends of the base frame and can slide along the length direction of the base frame; and / or, the two ends of the base frame are provided with T-shaped limiting structures for limiting the sliding stroke of the left and right frames; and / or, the left and right top frames are penetratingly connected to the lock sleeve in opposite directions and can slide relative to the left and right frames; and / or, the end of the left and right top frames is provided with an L-shaped limiting structure for limiting the sliding stroke; and / or, the connecting frame is provided with an angle scale for reading the rotation angle.

7. The tooling fixture of claim 1, wherein: The moving mechanism comprises a positioning mechanism, a slide rail and a moving platform, the moving platform is arranged on the slide rail through the sliding block on the lower end surface thereof, and the motor of the positioning mechanism drives the moving platform to move along the slide rail through a lead screw.

8. The tooling fixture of claim 7, wherein: The slide rail is arranged on a horizontal base plate, and the base plate is provided with a scale in the direction along which the slide rail extends; and / or, the slide rail is two and parallel to each other; and / or, the upper end surface of the slide rail is provided with a plurality of positioning holes, and the moving platform is provided with corresponding pins; the pins are connected to the positioning holes through the moving platform to fix the moving platform.

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