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CN-121972992-A - Bulking machine screw spindle processing equipment

CN121972992ACN 121972992 ACN121972992 ACN 121972992ACN-121972992-A

Abstract

The invention relates to the technical field of screw turning, in particular to a processing device for the screw spindle of an expander, including a machine tool, which is provided with a tool follower for supporting the workpiece, a support mechanism for limiting the machined surface and the unprocessed surface of the workpiece is provided on the tool follower, and an anti channeling mechanism for axial auxiliary limiting the workpiece is also provided on the tool follower. When rough machining the screw workpiece, the invention uses the double-sided limit support for the workpiece through two arms, so that the radial feed force exerted by the tool on the screw can directly point to the tool follower, ensuring the support effect. When finishing the surface of the screw workpiece, the driving component controls the clamping wheel to adaptively clamp the screw blade to achieve Tracking axial limit for tool finishing position, Effectively avoiding the displacement of the screw due to the axial push of the tool during precision machining, ensuring the machining quality of the screw surface.

Inventors

  • ZHANG GUOREN

Assignees

  • 济南大鹏机械设备有限公司

Dates

Publication Date
20260505
Application Date
20260403

Claims (10)

  1. 1. The processing equipment of the screw spindle of the bulking machine comprises a machine tool, wherein a follower rest for supporting a workpiece in an auxiliary mode is arranged on the machine tool, and is characterized in that a supporting mechanism for limiting a processed surface and an unprocessed surface of the workpiece at the same time is arranged on the follower rest, and an anti-channeling mechanism for axially assisting in limiting the workpiece is also arranged on the follower rest; The support mechanism comprises two C-shaped frames which are symmetrically arranged left and right and are fixedly arranged on the follower rest, an opening ring which rotates at the same speed and coaxially with the workpiece is rotatably arranged on the inner side of the C-shaped frames, and an abutting arm for abutting against the outer side of the workpiece is arranged on the opening ring; When a workpiece is roughly machined, the split ring drives the abutting arm to centering and abutting the outer side of the workpiece and synchronously rotate with the workpiece, and the follower rest and the cutter synchronously move, so that the abutting arm axially rolls along the workpiece; The anti-channeling mechanism comprises two groups of clamping wheels which are arranged in the middle of the follower rest through a driving assembly, the two groups of clamping wheels are arranged up and down and adaptively clamp screw blades through the driving assembly, and when a workpiece is finished, the abutting arm always abuts against the screw, and the follower rest drives the clamping wheels to follow the axial limit screw of the cutter; And turning the screw workpiece by means of double-sided limit and rolling contact during rough machining and axial limit during fine machining.
  2. 2. The processing device for the screw spindle of the bulking machine according to claim 1, wherein the incomplete toothed rings are fixedly arranged on the sides, away from each other, of the two opening rings, three fixedly arranged servo motors are uniformly distributed on the outer sides of the C-shaped frames, and the servo motors drive the corresponding incomplete toothed rings to rotate through driving gears connected to the servo motors.
  3. 3. The processing apparatus of a bulking machine screw spindle of claim 1 wherein the abutment arm is comprised of a wheel frame sliding radially on the split ring and a roller rotatably attached to the wheel frame, the roller axis being perpendicular to the C-frame axis.
  4. 4. A processing device for a screw spindle of a bulking machine according to claim 3, wherein electric cylinders are uniformly distributed on the inner side of the opening ring, pressure sensors are integrated on the electric cylinders, and the telescopic sections of the electric cylinders are fixedly connected with the corresponding wheel frames.
  5. 5. The processing device of the screw spindle of the bulking machine according to claim 4, wherein the roller is attached to the outer circumferential surface of the workpiece and moves axially along the workpiece during rough machining, and the electric cylinder pushes the roller to always abut against the workpiece with a fixed pressure during rough machining and finish machining.
  6. 6. A processing apparatus for a screw spindle of a bulking machine according to claim 1, wherein the notch of the C-shaped frame and the opening of the split ring are directed towards the front side of the tool initially so that the screw workpiece can be connected to the spindle of the machine tool through the C-shaped frame and the split ring.
  7. 7. The processing apparatus of claim 1, wherein the driving assembly comprises two base plates arranged on the follower rest in a vertically symmetrical sliding manner, and two sliding blocks are arranged on the base plates in a sliding manner in a left-right direction and are in rotary connection with the corresponding clamping wheels.
  8. 8. The processing device for the screw spindle of the bulking machine of claim 7, wherein the first hydraulic cylinder is fixedly arranged on the sliding block at the left side, and a telescopic section of the first hydraulic cylinder is fixedly connected with the other sliding block on the same base plate.
  9. 9. The processing device for the screw spindle of the bulking machine according to claim 7, wherein the locking block is arranged in the front side of the base plate in a sliding mode in the front-back mode, a second hydraulic cylinder for driving the corresponding locking block is fixedly arranged on the front side of the base plate, and the rear side face of the locking block is rough.
  10. 10. The processing device for the screw spindle of the bulking machine according to claim 7, wherein the follower rest is rotatably provided with a bidirectional screw rod, the bidirectional screw rod is respectively in threaded connection with the two base plates, and a gear motor for driving the bidirectional screw rod to rotate is fixedly arranged on the upper side of the follower rest.

Description

Bulking machine screw spindle processing equipment Technical Field The invention relates to the technical field of screw turning, in particular to a processing device for a screw spindle of a bulking machine. Background The processing precision of the main shaft of the screw rod of the bulking machine directly influences the working performance and the service life of the device, and the processing process flow approximately comprises the steps of firstly turning and rough machining an outer circle on a blank, then machining threads, and finally turning and finish machining the surface of the screw rod, wherein the surface of the outer circle is used as a reference for the subsequent thread machining, the dimensional precision and the form and position tolerance requirements are strict, and the surface quality of the screw rod of the turning and finish machining is directly related to the conveying efficiency and the extrusion effect of the bulking machine. Because the main shaft of the screw rod of the bulking machine is generally provided with a larger length-diameter ratio, the main shaft belongs to typical slender shaft parts, and the problems of cutter yielding, vibration and the like are extremely easy to occur due to insufficient rigidity in the turning process, so that the machining precision is influenced, and in order to solve the technical problem, a follower rest supporting structure is generally adopted to support the screw rod in the prior art in an auxiliary way. However, the existing follower rest still has the following defects in practical application that firstly, in the process of turning the excircle, a stepped structure with variable diameter is often arranged at a machining position of a cutter by virtue of a screw, namely, the situation that the diameter of a machined area is small and the diameter of a non-machined area is large is caused, and the existing follower rest usually only carries out limit support on a machined surface of the excircle of the screw due to rough surface of the non-machined area and poor coaxiality with a main shaft of a machine tool, so that the radial feeding force applied to the screw by the cutter cannot be directly directed to a supporting structure, the supporting effect is poor, and the deformation of the cutter caused by the cutting force is difficult to be effectively counteracted. Secondly, the existing follower rest is contacted with the screw workpiece through a plurality of supporting rollers which are circumferentially arranged and the axes of which are parallel to the axis of the screw workpiece, and the supporting rollers rotate along with the rotation of the screw to realize rolling contact, but when the follower rest moves along the axial direction, axial relative sliding can be generated between the supporting rollers and the screw workpiece, and the outer circle surface of the screw workpiece cannot be absolutely smooth and coaxial after rough machining, so that sliding friction force between the supporting rollers and the screw workpiece can fluctuate along with the real-time microcosmic contact state of the supporting rollers and the screw workpiece, the supporting force of the supporting rollers on the workpiece is unstable, the supporting effect is influenced, the surface of the supporting rollers is worn, and the subsequent machining quality is further influenced. And thirdly, after the screw thread is machined, in the process of turning the surface of the finish machining screw, the screw is subjected to larger axial cutting force due to the axial pushing and feeding of the cutter to the screw blade, so that axial movement is easy to occur, the existing follow-up supporting mode mainly provides radial support, effective limiting of the axial direction of the screw is difficult to achieve, and the screw is easy to shift due to the axial pushing of the cutter in the finish machining process, so that the surface quality of the screw is seriously affected. Therefore, how to realize stable support and effective axial limit of a screw workpiece when processing a screw spindle of a bulking machine is a technical problem to be solved by a person skilled in the art. Disclosure of Invention In order to solve the technical problems, the technical scheme is that the processing equipment of the screw spindle of the bulking machine comprises a machine tool, wherein a follower rest for supporting a workpiece in an auxiliary mode is arranged on the machine tool, a supporting mechanism for limiting a processed surface and an unprocessed surface of the workpiece at the same time is arranged on the follower rest, and an anti-channeling mechanism for axially assisting in limiting the workpiece is also arranged on the follower rest. The support mechanism comprises two C-shaped frames which are symmetrically arranged left and right and are fixedly arranged on the follower rest, an opening ring which rotates at the same speed and coaxially with the workpi