CN204430298U - Large scale complicated race shaping full back cutter - Google Patents

Abstract

The utility model is a precision large-size and complex wheel groove forming powerful cutting tool, which solves the problems of low positioning reliability and stability of existing tools, difficulty in chip removal and chip breaking during wheel groove processing. The included angle between the adjacent two walls of the positioning groove of the cutter body (5) is 90°. The large-size wheel groove blade (1) has a rectangular body that matches the positioning groove of the cutter body (5), and the adjacent two sides of the rectangular body are positioned The faces form an included angle of 90°, the other two sides of the rectangular body respectively have the first and second teeth, and the dedendums of the two teeth have respective chip guide surfaces (14) respectively connected with the upper and lower sides of the rectangular body, and the positioning surface is positioned on the In the positioning groove of the body (5), the large-size wheel groove blade (1) is pressed against the blade groove of the cutter body through the blade pressing screw (2) located on the center hole, and the large-size wheel groove blade (1), the knife The upper end of the body (5) is on the same plane, the chip guide surface (14) of the large-size wheel groove blade (1) is 10mm wide, and forms an angle of 10° with the upper and lower end surfaces of the rectangular body of the large-size wheel groove blade, and the pressure plate (3) is located on the large On the hole of the size wheel groove blade (1), it is fastened on the cutter body (5) by the pressure plate compression screw (4).

Description

Large size and complex wheel groove forming powerful cutting tool

Technical field:

The utility model relates to a precise and complex forming powerful cutting tool which is used in the processing of large-size belt pulley grooves, with high precision requirements, large tooth pitch, deep cutting, special tooth structure and large cutting force.

Background technique:

The precision of the pulley groove required in the practice of large-scale pulley groove processing is high, and the tooth profile of the pulley groove is wide and deep. Therefore, in the practice of processing large-size pulley grooves, the processing of pulley grooves adopts the forming processing method of half full tooth inclusion. Its cutting distance is large; the cutting depth is deep; resulting in heavy cutting load and high cutting resistance. Therefore, the requirements for reliable positioning and clamping of the tool are particularly strict. During the processing of the wheel groove, it is difficult to remove the iron chips and it is not easy to break the chips.

In the existing tool system, the positioning adopts a single positioning system with a 180° double-headed tooth contact surface, and the clamping is only a single clamping system such as a screw or a pressure plate. Therefore, the reliability and stability of tool positioning is low.

Utility model content:

The purpose of the utility model is to provide a large-sized complex wheel groove forming powerful cutting tool with higher positioning accuracy, more reliable clamping and better chip breaking and removal effect.

The utility model is achieved in that:

It is composed of large-size wheel groove blade 1, blade compression screw 2, pressure plate 3, pressure plate pressure screw 4, and cutter body 5. The angle between the two adjacent walls of the positioning groove of cutter body 5 is 90°, and the large-size wheel groove The blade 1 has a rectangular body to cooperate with the positioning groove of the cutter body 5. The positioning surfaces on the adjacent two sides of the rectangular body form an included angle of 90°. The other two sides of the rectangular body respectively have the first and second teeth. The chip guide surface 14 is respectively connected with the upper and lower sides of the rectangular body, and the positioning surface at an angle of 90° is positioned in the positioning groove of the cutter body 5, and the large-sized grooved blade 1 passes through the blade compression screw 2 located on its central hole Press the blade groove of the cutter body, the upper end of the large-size grooved blade 1 and the cutter body 5 are in the same plane, the chip guide surface 14 of the large-sized grooved blade 1 is 10 mm wide, and is in the same shape as the upper and lower end surfaces of the rectangular body of the large-sized grooved blade 10 ° included angle, the pressure plate 3 is located on the hole of the large-size wheel groove blade 1, and is fastened on the cutter body 5 by the pressure plate compression screw 4. The front end of cutter body 5 has profiling with blade tooth, the cutter body tooth of the small blade tooth 0.5mm of size.

The utility model aims at the different requirements of high-precision and high-reliability positioning and clamping in the large-size belt pulley groove processing system, and respectively carries out the innovative design of the positioning, clamping and chip breaking and removing systems of the tool system. For the positioning system, analyze and optimize the existing 180° double-head tooth-shaped contact surface single positioning system, and turn the positioning to take the 90° turning to the contact surface positioning system between the blade and the cutter body. For the clamping system, the screw in the center hole of the blade is used for eccentric clamping, and then a vertical downward pressing force is given to the pressure plate above the blade, and the blade is firmly clamped on the cutter body under the downward force of the pressing screw . For the chip breaking and removal system, a chip guide surface with a width slightly wider than the depth of the wheel groove and an angle of 10° with the upper end surface of the blade is machined on the upper end of the blade tooth for chip breaking and removal.

Compared with the original tool structure system, the utility model has carried out innovative design and development from the positioning, clamping, and chip breaking and removing systems, and has higher positioning accuracy, more reliable clamping, and better chip breaking and removing effects. Tests have proved that the precision retention and stability of the products processed by this new tool have been greatly improved, and the indexing of the tool due to strong cutting and the chipping of the blade due to unreliable clamping of the system have been basically eliminated, and the generated iron filings have formed into agglomerates Excluded, showing good chip removal performance. During the processing, workers no longer need to remove iron filings, and the surface quality of the workpiece has been greatly improved.

The utility model has the following advantages:

1. 90°L-shaped positioning surface design: Compared with the existing positioning structure in the market, this design effectively increases the contact area between the blade and the positioning surface of the cutter body, making positioning more reliable and better ensuring Meet the high-precision requirements for large-size pulley groove machining. At the same time, it avoids the unreliable positioning of the 180° double-headed tooth contact surface of the original tool and the unused side of the blade tooth that is easily broken during the application process.

2. Clamping structure with fastening screw and pressing plate: Compared with the original 180° double-headed blade, this structure adopts a single upper pressing plate to clamp, which provides greater clamping rigidity of the blade and avoids the micro-displacement of the blade during processing. The tool can withstand greater cutting force, thereby effectively improving the machining accuracy and efficiency of the workpiece, and it is also very helpful to improve the durability of the blade.

3. Structural design of the chip breaker of the blade: In view of the difficulty in chip removal and chip breaking during the machining of the wheel groove, the structure of the chip breaker on the blade is adopted, which more effectively ensures the chip breaking effect and iron in the cutting process. The chip flow control reduces the scraping of the machined surface and the phenomenon of knife hitting caused by poor chip removal.

Description of drawings:

Accompanying drawing 1 is the cutter structural diagram of the present utility model.

Accompanying drawing 2 is the blade structural drawing of the present utility model

Attached Figure 3 is the structure diagram of the original 180° double-ended blade

Detailed ways:

The powerful cutting tool for forming large-sized complex wheel grooves is composed of a large-sized wheel groove blade 1, a blade pressing screw 2, a pressing plate 3, a pressing plate pressing screw 4, and a cutter body 5. The large-size wheel groove blade 1 has two teeth 12-1 and 12-2. When the 12-1 tooth of the blade is used for processing, the included angle of the blade is 90°, and the positioning surface 11-1, 11-2 and the cutter body The included angle of the upper positioning groove is 90° to match the positioning surface, and when using the 12-2 teeth of the blade for processing, the blade is turned over and turned. The clamping of the blade first passes through the central hole 13 of the large-size wheel groove blade 1 with the blade compression screw 2, and is eccentrically clamped in the corresponding positioning groove of the cutter body 5. The upper end of the large-size wheel groove blade 1 and the cutter body 5 are on the same plane, and the position of the teeth of the large-size wheel groove blade 1 has a width of 10mm, and a chip guide surface 14 at an angle of 10° with the upper and lower end surfaces of the large-size wheel groove blade rectangular body, so that The chips flow well over the chip guide surface 14 of the insert 1 and are curled. The pressure plate 3 is located on the hole of the large-size wheel groove blade 1, and is fastened on the cutter body 5 by the pressure plate pressure screw 4, and applies a downward clamping force to the blade 1 again, so that the large-size wheel groove blade 1 can be reliably clamped on the In the corresponding positioning groove of the cutter body 5. The front end of cutter body 5 has and blade tooth profiling, and the cutter body tooth 5-1 of small size blade tooth 0.5mm, to improve the intensity of blade tooth profile position.

Claims (2)

1. A powerful cutting tool for large-sized and complex groove forming, which is characterized in that it consists of a large-sized groove blade (1), blade pressing screw (2), pressure plate (3), pressure plate pressure screw (4), cutter body (5 ), the included angle between the adjacent two walls of the positioning groove of the cutter body (5) is 90°, the large-size wheel groove blade (1) has a rectangular body that matches the positioning groove of the cutter body (5), and the adjacent rectangular body The positioning surfaces on both sides form an included angle of 90°, the other two sides of the rectangular body respectively have the first and second teeth, and the dedendums of the two teeth respectively have chip guide surfaces (14) connected with the upper and lower sides of the rectangular body respectively, forming a 90° The positioning surface of the angle of ° is positioned in the positioning groove of the cutter body (5), and the large-sized wheel groove blade (1) is pressed against the blade groove of the cutter body through the blade pressing screw (2) located on its center hole. The upper end of the grooved blade (1) and the cutter body (5) are on the same plane, and the chip guide surface (14) of the large-sized grooved blade (1) is 10mm wide, and is clamped at 10° with the upper and lower end surfaces of the rectangular body of the large-sized grooved blade Angle, the pressure plate (3) is located on the hole of the large-size wheel groove blade (1), and is fastened on the cutter body (5) by the pressure plate compression screw (4). 2. The powerful cutting tool for forming large-sized and complex wheel grooves according to claim 1, characterized in that the front end of the cutter body (5) has cutter body teeth that follow the shape of the blade teeth, and the size of the blade teeth is 0.5 mm.