CN103639506B - Special cutter bar for wide-line processing of mold - Google Patents

Abstract

The invention relates to a special cutter bar for mold wide row processing. At present, most of the tool bars used in the mold industry are tool bars that match the point-contact narrow row processing tools, and the positioning methods of the tool bars used are mostly single-sided positioning, and the connection between the tool bar and the blade is connected by fastening screws. The connection between the blade and the tool holder is poor, and the screw looseness and damage often occur. The present invention consists of: a front cutter bar (21), the front cutter bar is connected with the rear cutter bar (22), the front cutter bar has a screw hole (9), and the front cutter bar is connected with the milling cutter Sheets (24) are fixedly connected by screws (23). The invention is used for the cutter bar for mold wide row processing.

Description

Tool holder for mold wide row processing

Technical field:

The invention relates to a special cutter bar for mold wide row processing.

Background technique:

At present, most of the cutting tools used in the processing of large-scale car panels are single-sphere mirror-type ball-end milling cutters. This type of cutting tool belongs to point-contact narrow-line processing during the processing process, resulting in reduced processing efficiency and uncontrollable surface quality. At present, the cutter rods used in the mold industry are also matched with this kind of point-contact narrow row processing. The positioning method of the cutter rods used is mostly single-sided positioning, and the connection between the cutter rod and the blade adopts fastening screws. connect. For automotive panel molds, the mold materials are mostly die steels such as Cr12MoV and 7CrSiMnMoV, and the hardness reaches HRC50-65 after quenching, which is a typical high-strength and high-hardness material. This kind of high-hardness material has obvious cutting vibration and large cutting force during the processing process. The ball end milling cutter blade and the tool holder are only positioned by one side and the screw. During the processing process, the large cutting vibration and cutting force lead to fastening. The screws are often loose and damaged, resulting in poor connection between the blade and the tool holder, resulting in errors in the mold processing surface and size.

Invention content:

The purpose of the present invention is to provide a special cutter bar for mold wide row processing.

The purpose of the present invention is achieved like this:

A special cutter bar for mold wide row processing, which consists of: a front cutter bar, the front cutter bar is connected with a rear cutter bar, and a screw hole is opened on the front cutter bar, and the front cutter bar is connected with a milling cutter The blades are fixedly connected by screws. The front cutter bar has a curved groove A and a curved groove B. The curved groove A is matched with the intersection of the flank of the milling blade and the upper surface of the milling blade. The curved groove B is matched with the upper surface of the milling blade. The flank of the milling insert cooperates with the intersection of the lower surface of the milling insert; the front tool bar cooperates with the flank of the milling insert through the matching surface A of the flank and the matching surface B of the flank, and the cutting edge The groove is matched with the arc edge and the straight edge of the milling insert, and the matching surface A of the rake face and the matching surface B of the rake face are matched with the rake face of the milling insert; The bevel B cooperates with the transition bevel of the milling blade, and the angle of the cutter bar matching bevel A and the bevel B is consistent with the angle of the transition bevel of the milling blade, which limits the axial rotation of the blade when it is clamped in the cutter rod. The transition part between the mating surface A of the rake face and the mating slope A of the cutter bar adopts the transition arc surface A, and the transition part between the mating surface B of the rake face and the mating slope B adopts the transition arc surface B. The mating surface A of the outer surface of the blade is matched with the upper surface of the insert of the indexable ball-end milling cutter for wide-row machining of the mold, and the mating surface B of the outer surface of the cutter bar blade specially used for wide-row machining of the mold is matched with the indexable surface of the blade for wide-row machining of the mold. The lower surface of the ball-end milling cutter insert is matched, and the special tool holder for wide-row mold processing has a cut surface A and a cut surface B, and the special cutter holder for wide-row mold processing has a straight groove A and a straight groove B. The rod cooperates with the intersection of the upper surface of the milling cutter blade and the matching slope A through the straight groove A, and the said tool rod cooperates with the intersection of the lower surface of the milling cutter blade and the matching slope B through the straight groove B. The cutter bar has a tool nose groove A and a tool nose groove B to prevent over-positioning when the blade is positioned, and the rear tool bar is connected with the tool holder system of the machine tool spindle.

Beneficial effect:

1. Provides a special tool holder for indexable ball end milling cutters for wide-row machining of molds. In addition to the use of screw holes and single-sided positioning, this tool holder has increased the matching surface of the tool flank and the tool holder flank, milling The positioning of the transition slope of the knife blade and the matching slope of the tool bar reduces the possibility of screw loosening caused by cutting vibration and large cutting force during mold processing.

Description of drawings:

Accompanying drawing 1 is the structural representation of the present invention.

Accompanying drawing 2 is a partial schematic diagram of the cutter bar.

Accompanying drawing 3 is a section view 1 of a part of the cutter bar.

Accompanying drawing 4 is the section view 2 of the part of the cutter bar.

Accompanying drawing 5 is the third partial sectional view of the cutter bar.

Accompanying drawing 6 is the bottom view of the cutter bar part.

detailed description:

Example 1:

A special knife bar for mold wide row processing, which consists of: a front knife bar 21, the front knife bar is connected with a rear knife bar 22, a screw hole 9 is opened on the front knife bar, and the front knife bar It is fixedly connected with the milling blade 24 by screws 23 . The invention is used for the cutter bar for the wide row processing of the mould.

Example 2:

According to the special tool bar for mold wide row processing described in Embodiment 1, the special tool bar for mold wide row processing has a curved groove A, a label 1, a curved groove B, and a label 12, and the curved groove A and the curved groove B respectively correspond to the width The flank of the indexable ball end milling insert for processing is matched at the intersection of the upper and lower surfaces of the insert. The front tool rod passes through the flank matching surface A, marked 2, and the flank matching surface B, marked 13 and The flank of the milling insert is matched, the cutting edge groove 4 is matched with the arc edge and the straight edge of the milling insert, the matching surface A of the rake face, number 5 and the matching surface B of the rake face, number 15 are the same as the above The rake face of the milling insert is matched, and the front cutter bar is matched with the transition bevel of the milling insert through the matching bevel A, number 7 and the bevel B, number 17, and the cutter bar is matched with the milling cutter The angle of the transition bevel is the same, which limits the axial rotation of the blade when it is clamped in the tool holder. The mating surface A of the rake face of the front tool bar, number 5 and the matching slope A, number 7, the transition part adopts the transition arc surface A , number 6, mating surface B of the rake face, number 15 and matching slope B, number 17 transition part adopts transitional arc surface A, number 16, matching surface A of the outer surface of the tool holder blade for mold wide-row processing, number 17 10. The mating surface B on the outer surface of the insert, numbered 19, cooperates with the upper and lower surfaces of the milling insert respectively, and the front cutter bar has a cutting surface A, numbered 11 and a cutting surface B, numbered 20, and the front knife The bar has a straight groove A, number 8 and a straight groove B, number 18. The front tool bar is matched with the intersection of the upper and lower surfaces of the milling cutter blade and the inclined plane through the straight slot. The front tool bar has a tool tip groove A, Number 3 and tool nose groove B, number 14, prevent over-positioning when insert positioning.

Example 3:

According to the special tool holder for mold wide row processing described in Embodiment 1 or 2, the rear tool holder is connected with the tool handle system of the main shaft of the machine tool.

Claims (1)

1. A special knife bar for mold wide row processing, which consists of: front knife bar, characterized in that: said front knife bar is connected with rear knife bar, said front knife bar has screw holes, said front knife bar The front cutter bar and the milling blade are fixedly connected by screws. The front cutter bar has a curved groove A and a curved groove B. The curved groove A is matched with the intersection of the flank of the milling blade and the upper surface of the milling blade. The above-mentioned curved groove B cooperates with the intersection of the flank of the milling insert and the lower surface of the milling insert; The cutter face fits, the cutting edge groove fits with the arc edge and the straight edge of the milling insert, the rake face matching surface A and the rake face matching face B cooperate with the milling insert rake face; the rake shank By matching the bevel A and the bevel B with the transition bevel of the milling insert, and the angle of the bevel A and the bevel B of the front tool bar are consistent with the transition bevel of the milling insert, the axis of the insert when it is clamped in the arbor is limited. The transition part between the mating surface A of the rake face of the front cutter bar and the mating slope A adopts the transition arc surface A, and the transition part between the mating surface B of the rake face and the mating slope B adopts the transition arc surface B. The mating surface A of the outer surface of the cutter bar insert specially used for mold wide-row processing cooperates with the upper surface of the milling insert, and the outer surface mating surface B of the special cutter bar insert for mold wide-row processing cooperates with the lower surface of the milling insert. The special tool bar for mold wide row processing has cutting surface A and cutting surface B. The special tool bar for mold wide row processing has straight groove A and straight groove B. The said tool bar passes through the straight groove A and the upper surface of the milling blade and the matching inclined surface. Cooperate at the intersection of A, and the said tool bar cooperates with the intersection of the lower surface of the milling cutter blade and the mating slope B through the straight groove B, and the special tool bar for mold wide row processing has a tool tip groove A and a tool tip groove B to prevent Over-positioning occurs when the blade is positioned, and the rear tool bar is connected with the machine tool spindle tool handle system.