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CN-120382428-B - Groove blade grinding fixture

CN120382428BCN 120382428 BCN120382428 BCN 120382428BCN-120382428-B

Abstract

The invention discloses a groove blade grinding clamp which comprises a base, a positioning plate, a clamping piece and a pressing plate, wherein the positioning plate is fixedly arranged on the base and matched with the base to form a groove blade accommodating cavity, the clamping piece comprises a clamping conical surface, a clamping bottom surface, a pin hole and two clamping surfaces, the pressing plate comprises an installation part and a working part, the installation part is used for installing the pressing plate on a machine tool clamping mechanism so that the machine tool clamping mechanism can drive the pressing plate to rotate to press the clamping piece, the working part is provided with a conical surface, a supporting plane and a pin column, the pin column is arranged on the supporting plane and coaxial with the conical surface, the clamping piece is arranged between the side positioning surface of the groove blade and the pressing plate, the clamping bottom surface is arranged on the supporting plane, the clamping conical surface is matched with the conical surface, the pin hole is in clearance fit with the pin column, and when the pressing plate rotates and drives the clamping piece to clamp the groove blade, the clamping piece can rotate around the axis of the clamping conical surface so that the two clamping surfaces respectively abut against the front end and the rear end of the side positioning surface of the groove blade. Has the advantages of stable and reliable positioning, low manufacturing difficulty and the like.

Inventors

  • WANG YUZHONG
  • LIU TIAN
  • CHU YONGDAI
  • LIU XIAOFENG
  • Shan Xiongchang

Assignees

  • 株洲钻石切削刀具股份有限公司

Dates

Publication Date
20260505
Application Date
20250516

Claims (6)

  1. 1. A groove blade grinding clamp is characterized by comprising a base (1), a positioning plate (2), a clamping piece (3) and a pressing plate (4), wherein the positioning plate (2) is fixedly installed on the base (1) and is matched with the base (1) to form a containing cavity of a groove blade (9), the clamping piece (3) comprises a clamping conical surface (31), a clamping bottom surface (32), a pin hole (33) and two clamping surfaces (34), the pressing plate (4) comprises an installation part (41) and a working part (42), the installation part (41) is used for installing the pressing plate (4) on a machine tool clamping mechanism so that the machine tool clamping mechanism can drive the pressing plate (4) to rotationally press the clamping piece (3), the working part (42) is provided with a conical surface (421), a supporting plane (422) and a pin post (423), the working part (42) comprises a limiting table (424) and two limiting surfaces (425), the conical surface (421) is arranged on the side wall of the limiting table (424), the two limiting surfaces (425) are respectively arranged on the side surfaces (421) of the limiting table (424) and the supporting plane (422) and the pin post (423) are arranged on the side of the blade (3), the clamping bottom surface (32) is arranged on the supporting plane (422), the clamping conical surface (31) is matched with the conical surface (421), the pin hole (33) is in clearance fit with the pin column (423), when the pressing plate (4) rotates and drives the clamping piece (3) to clamp the groove blade (9), the clamping piece (3) can rotate around the axis of the clamping conical surface (31) so that the two clamping surfaces (34) respectively abut against the front end and the rear end of the groove blade (9) side positioning surface, a process clearance surface (426) is arranged between the conical surface (421) and the supporting plane (422), the height of the conical surface (421) is L2, the effective height between the conical surface (421) and the supporting plane (422) is L3, the L3 is smaller than L2, the two limiting surfaces (425) are symmetrically distributed and have an included angle beta between the two limiting surfaces, the height of the limiting surfaces (425) is smaller than 30 degrees, the height of the limiting surfaces (425) is smaller than or equal to 39L 6, the diameter of the pin hole (421) is smaller than or equal to 5 DEG, the diameter of the conical surface (423) is smaller than or equal to 0, and the diameter of the pin (alpha) is smaller than or equal to 5, and the diameter of the conical surface (23) is smaller than or equal to 0.
  2. 2. The groove insert grinding jig according to claim 1, wherein the circular arc central angle of the conical surface (421) is A, which satisfies 60 DEG A90 DEG.
  3. 3. The groove insert grinding jig according to claim 1 or 2, wherein the taper angle of the clamping taper surface (31) is γ, the radius of the arc of the clamping taper surface (31) is R2, and the radius of the arc of the taper surface (421) is R1, such that γ=α, r1=r2 is satisfied.
  4. 4. The grooving blade grinding jig according to claim 1 or 2, wherein the width of the clamping piece (3) is L4, the thickness thereof is L5, and the arc chord length of the tapered surface (421) is L1, so that l4=l1, l5=l3 are satisfied.
  5. 5. The pocket insert grinding clamp according to claim 1 or 2, characterized in that a clamping clearance surface (35) is provided between two of said clamping surfaces (34).
  6. 6. The slot-blade grinding jig according to claim 1 or 2, characterized in that the base (1) is provided with a positioning plate supporting surface (11), a blade positioning boss (12) and a clearance surface (13), the positioning plate (2) is provided with a waist-shaped hole (21) and a blade positioning surface (22), a standard screw passes through the waist-shaped hole (21) to mount the positioning plate (2) on the positioning plate supporting surface (11), and the blade positioning boss (12), the blade positioning surface (22) and two clamping surfaces (34) clamp the slot blade (9) together.

Description

Groove blade grinding fixture Technical Field The invention mainly relates to the field of metal cutting tool machining, in particular to a groove blade grinding clamp. Background The front cutter surface of the groove blade is subjected to grooving grinding processing, so that the sharpness and the cutting edge quality of the cutting edge of the groove blade can be greatly improved, but because the groove blade is of a thin and long type with two wide ends and a narrow middle, a classical clamp mode of combination of a base, a locating plate and a pressing plate is adopted in grooving processing of a numerical control grinding machine tool or a traditional grinding machine tool. In the prior art, the automatic slot blade slotting numerical control machine tool adopts a traditional swing arm type clamping fixture, two positioning bosses are formed on the upper part of a base to avoid the slot blade cutter head and the manipulator clamping space, three clearance spaces are isolated, when a swing arm type pressing plate adopts a clamping point to act on the middle parts of the two positioning bosses, the slot blade can be positioned and clamped, but the slot blade is extremely easy to be pressed and broken by the pressing plate, when the swing arm type pressing plate adopts two clamping points to respectively act on the two positioning bosses, the slot blade can be prevented from being pressed and broken by the pressing plate, but the two clamping points of the swing arm type pressing plate are difficult to act on the slot blade at the same time, and effective positioning and clamping cannot be formed. Disclosure of Invention The invention aims to solve the technical problem of overcoming the defects of the prior art and providing the groove blade grinding clamp which is stable and reliable in positioning and low in manufacturing difficulty. In order to solve the technical problems, the invention adopts the following technical scheme: The utility model provides a groove blade grinding anchor clamps, includes base, locating plate, clamping piece and clamp plate, locating plate fixed mounting in on the base and with the base cooperation forms the holding chamber of groove blade, the clamping piece includes clamping conical surface, clamping bottom surface, pinhole and two clamp faces, the clamp plate includes installation department and working portion, the installation department is used for with the clamp plate is installed in lathe clamping mechanism so that lathe clamping mechanism can drive the clamp plate rotates and compresses tightly the clamping piece, the working portion is equipped with conical surface, supporting plane and round pin post, the round pin post is located on the supporting plane and with the conical surface is coaxial, the clamping piece set up in between the side locating surface of groove blade with the clamp plate, clamping bottom surface is arranged in on the supporting plane, clamping conical surface and conical surface cooperation, the pinhole with round pin post clearance fit, the clamp plate rotates and drives when the clamping piece presss from both ends the groove blade side locating surface's front and back are supported respectively to the clamping piece. As a further improvement of the above technical scheme: the working part comprises a limiting table and two limiting surfaces, wherein the conical surface is arranged on the side wall of the limiting table, and the two limiting surfaces are respectively arranged on two sides of the conical surface. The cone angle of the conical surface is alpha, the circular arc central angle is A, and the cone angle is more than or equal to 2 degrees and less than or equal to 425 degrees, and the cone angle is more than or equal to 60 degrees and less than or equal to 90 degrees. A process clearance surface is arranged between the conical surface and the supporting plane, the height of the conical surface is L2, the effective height between the conical surface and the supporting plane is L3, and L3 is less than L2. The cone angle of the clamping conical surface is gamma, the arc radius of the clamping conical surface is R2, the arc radius of the conical surface is R1, and the requirements of gamma=alpha and R1=R2 are met. The width of the clamping piece is L4, the thickness of the clamping piece is L5, the arc chord length of the conical surface is L1, and the requirements that L4=L1 and L5=L3 are met. The two limiting surfaces are symmetrically distributed, an included angle beta is formed between the two limiting surfaces, the limiting surfaces are required to be 5 degrees or more and less than or equal to 30 degrees, the height of the limiting surfaces is L6, and the limiting surfaces are required to be 0.2L3 degrees or more and L6 or less than or equal to 0.33L3. The diameter of the pin hole is D, and the diameter of the pin column is D, wherein L6 is Tanα <0.5 (D-D) < (L3-L4) is Tanα. A clamping clearance surface is arranged between t