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CN-121972994-A - Tool fixture for milling special-shaped disc parts based on CNC

CN121972994ACN 121972994 ACN121972994 ACN 121972994ACN-121972994-A

Abstract

The invention discloses a tool fixture for machining special-shaped disc parts based on CNC milling, which relates to the technical field of fixture fixing of special-shaped disc parts, wherein a blind hole is formed in the top surface of a top plate, a blocking surface is formed in the side wall of the blind hole, a pulling cylinder is fixedly arranged on the bottom surface of a fixing seat, a piston rod of the pulling cylinder extends upwards into a circular through hole of the fixing seat, a pulling block A and a pulling block B are hinged to an extending end of the pulling cylinder through a distribution shaft, the pulling block A upwards penetrates through a trapezoid groove of a bar block and extends into a through groove, the pulling block B upwards penetrates through the trapezoid groove of the bar block and extends into a side groove, a pushing cylinder which is longitudinally arranged is fixedly arranged on the top surface of the top plate, and a push rod is fixedly connected to the piston rod of the pushing cylinder. The special-shaped disc part fixture has the beneficial effects that the special-shaped disc part fixture can be firmly fixed, and the production quality of finished parts is greatly improved.

Inventors

  • JIANG KANG
  • Zha Huali
  • PANG HUIJUN
  • ZHOU YAWEN
  • Yao Fa
  • Ou xue

Assignees

  • 成都宏明双新科技股份有限公司

Dates

Publication Date
20260505
Application Date
20260402

Claims (7)

  1. 1. The tool fixture for milling the special-shaped disc parts based on CNC is characterized by comprising a bottom plate (9) and a top plate (10) arranged above the bottom plate (9), wherein a blind hole (11) is formed in the top surface of the top plate (10), a blocking surface (12) is formed in the side wall of the blind hole (11), a side groove (13) positioned at the front side of the blocking surface (12) is formed in the right side wall of the blind hole (11), the side groove (13) downwards penetrates through the bottom surface of the bottom plate (9), a through groove (14) communicated with the side groove (13) is formed in the bottom of the blind hole (11), and the through groove (14) downwards penetrates through the bottom surface of the bottom plate (9); A fixed seat (15) positioned right below the through groove (14) is fixedly arranged on the bottom surface of the bottom plate (9), a rectangular sinking groove (16) and a circular through hole (17) are sequentially formed in the fixed seat (15) from top to bottom, a bar-shaped block (18) matched with the rectangular sinking groove is fixedly arranged in the rectangular sinking groove (16), a trapezoid groove (19) communicated with the circular through hole (17) is formed in the bar-shaped block (18), and the left side wall and the right side wall of the trapezoid groove (19) are inclined planes (20) inclined downwards; A pulling cylinder (21) is fixedly arranged on the bottom surface of the fixed seat (15), a piston rod of the pulling cylinder (21) extends upwards into a circular through hole (17) of the fixed seat (15), a pulling block A (23) and a pulling block B (24) are hinged to the extending end through a pin shaft (22), the pulling block A (23) upwards penetrates through a trapezoid groove (19) of the bar block (18) and extends into the through groove (14), the pulling block B (24) upwards penetrates through the trapezoid groove (19) of the bar block (18) and extends into the side groove (13), and the outer side walls of the pulling block A (23) and the pulling block B (24) are respectively contacted with two inclined planes (20) of the trapezoid groove (19); A pushing cylinder (25) which is longitudinally arranged is fixedly arranged on the top surface of the top plate (10), and a push rod (26) is fixedly connected to a piston rod of the pushing cylinder (25).
  2. 2. The fixture for CNC milling special-shaped disc parts according to claim 1, wherein the top plate (10) is parallel to the bottom plate (9).
  3. 3. The fixture for CNC milling special-shaped disc parts according to claim 1, wherein one connecting column is fixedly arranged on the top surface of the bottom plate (9) and located at four corners of the bottom plate, and the top ends of the four connecting columns are fixedly arranged on the top plate (10).
  4. 4. The fixture for machining the special-shaped disc parts based on CNC milling according to claim 1 is characterized in that the depth of the blind holes (11) is equal to the height of the turbine disc (2) of the special-shaped disc parts.
  5. 5. The fixture for CNC milling special-shaped disc parts according to claim 1, wherein an installation seat (27) is fixedly arranged on the rear side of the blind hole (11) on the top surface of the top plate (10), a cylinder body of the pushing cylinder (25) is fixedly arranged on the rear end surface of the installation seat (27), a piston rod of the pushing cylinder (25) penetrates through the installation seat (27) forwards, and the extending end of the piston rod is connected with the push rod (26).
  6. 6. The fixture for CNC milling special-shaped disc parts according to claim 1, wherein the pulling block A (23) and the pulling block B (24) are symmetrically arranged about the pin shaft (22).
  7. 7. The fixture for CNC milling special-shaped disc parts according to claim 1, further comprising a controller, wherein the controller is electrically connected with the pulling cylinder (21) and the pushing cylinder (25) through signal wires.

Description

Tool fixture for milling special-shaped disc parts based on CNC Technical Field The invention relates to the technical field of fixture fixing special-shaped disc parts, in particular to a fixture for machining special-shaped disc parts based on CNC milling. Background The front end of a workshop produces a batch of special-shaped disc parts shown in figures 1-2, the special-shaped disc parts comprise a disc 1 and a turbine disc 2 fixedly arranged on the bottom surface of the disc 1, the tail end of the turbine disc 2 is a straight surface 3, two support plates 4 are fixedly arranged on the outer edge of the disc 1, and the two support plates 4 are symmetrical with respect to the disc 1. After receiving a batch of special-shaped disc parts sent from the front end, the rear end worker technically requires milling the top surface of the disc 1 through a numerical control machine tool to obtain a required shape, before the milling, the worker fixes the special-shaped disc part tool by adopting a clamp shown in fig. 3-4, and after the tool is finished, the worker can operate the numerical control machine tool to mill the top surface of the disc 1. The fixture comprises two horizontal oil cylinders 6 fixedly arranged on the table top of a tool table 5, a holding block 7 is fixedly arranged at the acting end of a piston rod of the two horizontal oil cylinders 6, the two holding blocks 7 are oppositely arranged left and right, an arc-shaped surface 8 is arranged on the inner end surface of each holding block 7, and the arc-shaped surface 8 is matched with the outer surface of a turbine disc 2. The method for fixing the special-shaped disc part tool by workers through the fixture is as follows: S1, taking out a special-shaped disc part shown in the figures 1-2 by a worker, placing a turbine disc 2 of the special-shaped disc part on a table surface of a tool table 5, and ensuring that the turbine disc 2 is positioned between two enclasping blocks 7; S2, controlling piston rods of the two horizontal oil cylinders 6 to extend, driving the enclasping blocks 7 to move towards the turbine disc 2 by the piston rods, and after the piston rods of the two horizontal oil cylinders 6 extend completely, clamping and fixing the turbine disc 2 between the two enclasping blocks 7, so that the fixture for the special-shaped disc parts is fixed, as shown in FIG. 5; S3, a worker operates the numerical control machine tool to perform milling on the top surface of the disc 1, and after milling, finished parts with required shapes can be produced; S4, the workers control piston rods of the two horizontal oil cylinders 6 to retract, the piston rods drive the enclasping blocks 7 to move in the direction away from the finished part, and then the workers take the finished part away from the tooling table 5; S5, the worker repeatedly operates the steps S1-S4 for a plurality of times, so that the disc 1 of the plurality of special-shaped disc parts can be continuously milled, and further the required finished parts can be correspondingly produced. However, although the fixture can fix the special-shaped disc parts, the following technical defects still exist in the actual use process: I. in step S2, the turbine disc 2 of the special-shaped disc part is clamped and fixed between the two enclasping blocks 7 only in the horizontal direction, the clamping is not firm, and the milling force of the milling cutter milling disc 1 of the numerical control machine tool is quite large, so that the whole special-shaped disc part is jumped, which definitely reduces the milling quality of the milling cutter on the disc 1, and further reduces the production quality of the finished part. II. In step S2, the radial force is applied to the turbine disc 2 by the two clasping blocks 7, and the clamping force is so great that the turbine disc 2 is easily deformed, which undoubtedly further reduces the production quality of the finished part. Therefore, a tooling fixture capable of firmly fixing the tooling of the special-shaped disc parts and greatly improving the production quality of finished parts is needed. Disclosure of Invention The invention aims to overcome the defects of the prior art and provides a tool jig for milling special-shaped disc parts based on CNC. The tool fixture comprises a bottom plate and a top plate arranged above the bottom plate, wherein a blind hole is formed in the top surface of the top plate, a blocking surface is formed in the side wall of the blind hole, a side groove positioned on the front side of the blocking surface is formed in the right side wall of the blind hole, the side groove penetrates through the bottom surface of the bottom plate downwards, a through groove communicated with the side groove is formed in the bottom of the blind hole, and the through groove penetrates through the bottom surface of the bottom plate downwards; A fixed seat positioned under the through groove is fixedly arranged on the bottom surface of