CBN milling cutter for ceramic material processing

Abstract

The utility model discloses a CBN (Cubic Boron Nitride) milling cutter for processing ceramic materials. The milling cutter comprises the cutter holder, the mounting head arranged on the surface of the upper end of the cutter holder, the fixing assembly arranged on the upper side of the mounting head and the reinforcing assembly arranged on the outer wall of the front side of the mounting head, when the cutter head of the milling cutter needs to be replaced, a fixing bolt is twisted outwards, and the fixing bolt is meshed in an inner screw hole and an outer screw hole through threads and is rotated leftwards to be taken out; before the fixing bolt is installed, the pulling plate is pulled downwards to enable the pulling plate to move downwards in the open groove, the clamping plate at the rear end is driven to move downwards in the telescopic groove, the hydraulic rod and the spring are squeezed and shrunk, after the fixing bolt is installed, the pulling force on the pulling plate is loosened, and the tool bit is detached from the installation groove. And the telescopic rod and the spring push the clamping plate upwards to extend upwards in the telescopic groove, so that clamping threads on the upper side surface of the clamping plate are clamped and embedded in threads on the outer wall of the fixing bolt, the fixing bolt can be secondarily fixed, and the replacement and fixing stability of the tool bit is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to CBN milling cutter technical field, specifically is a kind of CBN milling cutter of ceramic material processing. BACKGROUND

[0002] Modern automobile cast iron and powder metallurgy parts complex cavity milling machining needs high speed, high precision, high life, high efficiency, high economy, ordinary tool cannot be competent, so special structure of tool, tool material, tool parameter, cutting parameter, friction wear principle need to be researched, so special parameter structure CBN (cubic boron nitride) spiral milling cutter is specially designed and developed.

[0003] Prior art patent (announcement number CN201760647U) discloses CBN spiral milling cutter, tool tip arc R0.5 can be finely milled and can withstand impact, tool tip angle 89 ° end surface secondary angle 1 °, can keep blade strength and cutting resistance is small, can also polish the machined part, it is also important tool parameter, with good effect of improving surface quality, tool head combination outer diameter φ50±0.02 and tool shank diameter φ42-0.011 can guarantee the rigidity and stability of tool combination whole, the dimensional accuracy of tool is the basic requirement of tool level, and necessity is also considered while considering economy and rationality, that is, under the premise of guaranteeing processing requirement, the tool precision requirement is designed appropriately.

[0004] However, there are some problems in the use of existing CBN milling cutter: 1, the existing milling cutter and tool holder are integrated structure, the tool holder is fixed on the rotating head by engaging clamping device, after long time use of milling cutter, the milling cutter head is worn and needs to be replaced, then the tool holder needs to be disassembled and taken down from rotating device, and the installation angle needs to be adjusted again, which brings inconvenience to replacement.2, the existing device is positioned only by clamping assembly after installation, and relative deflection can occur during high-speed rotation, which affects the stability of installation. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of CBN milling cutter of ceramic material processing to solve the problems raised in the above background.

[0006] To solve the above technical problems, the utility model provides the following technical scheme: including tool holder, installation head being arranged on the upper end surface of tool holder, fixed assembly being arranged on the upper side of installation head and reinforcing assembly being arranged on the front side outer wall of installation head;

[0007] The fixed assembly includes installation slot being arranged on the upper side of installation head, and the cutter head is detachably inserted in the installation slot;

[0008] The reinforcing assembly comprises an outer plate arranged on the outer surface of the front end of the mounting head, and a telescopic slot is formed in the inner portion of the outer plate.

[0009] As a further scheme of the utility model: the inner screw hole and the outer screw hole are internally jointly fitted with a fixing bolt.

[0010] As a further scheme of the utility model: the inner screw hole and the outer screw hole are internally jointly fitted with a fixing bolt.

[0011] As a further scheme of the utility model: a telescopic rod is internally mounted in the telescopic slot at the lower side of the clamping plate, and a spring is fitted on the outer wall of the telescopic rod.

[0012] As a further scheme of the utility model: a slot is formed in the front side surface of the telescopic slot, and a pull plate is arranged on the front end surface of the clamping plate and matched with the slot.

[0013] As a further scheme of the utility model: the clamping thread arranged on the upper side surface of the clamping plate is matched with the thread arranged on the outer wall of the fixing bolt.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] When the cutting head of the milling cutter needs to be replaced, the fixing bolt is twisted outward, engaged in the inner screw hole and the outer screw hole and rotated to the left to be taken out, the cutting head is pulled upward to be separated from the mounting slot, the cutting head is inserted into the mounting slot, the fixing bolt is twisted to the right to rotate in the outer screw hole until the inner screw hole is entered, the preliminary fixing of the cutting head is completed, and the replacement is more convenient.

[0016] Before the fixing bolt is installed, the pull plate is pulled downward to move downward in the slot, drives the clamping plate at the rear end to move downward in the telescopic slot, and extrudes and shrinks the hydraulic rod and the spring, after the fixing bolt is installed, the pulling force on the pull plate is released, the telescopic rod and the spring push the clamping plate upward in the telescopic slot, the clamping thread on the upper side surface of the clamping plate is clamped in the thread on the outer wall of the fixing bolt, and the secondary fixing of the fixing bolt is completed, so that the stability of the replacement of the cutting head is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is an overall structural schematic view of the utility model embodiment;

[0018] Figure 2 It is a fixing assembly schematic view of the utility model embodiment;

[0019] Figure 3 It is a fixing assembly schematic view of the utility model embodiment; Figure 2A local enlarged schematic view of the middle A bureau;

[0020] Figure 4 A reinforcing assembly schematic view of the utility model embodiment.

[0021] In the figure: 1, tool holder; 2, mounting head; 301, mounting groove; 302, tool bit; 303, internal screw hole; 304, external screw hole; 305, fixing bolt; 401, outer plate; 402, expansion slot; 403, expansion bar; 404, spring; 405, clamping plate; 406, slot; 407, pull plate. DETAILED DESCRIPTION

[0022] In order to facilitate the solution, the utility model embodiment provides a kind of CBN milling cutter of ceramic material processing.The technical scheme in the utility model embodiment will be clearly and completely described below in conjunction with the drawings in the utility model embodiment, obviously, the described embodiment is only part of the utility model, not all embodiments.Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor are within the scope of the utility model protection. Embodiment one

[0023] As Figures 1 to 4 As shown in the figure, the utility model provides a kind of CBN milling cutter of ceramic material processing, including tool holder 1, the mounting head 2 of setting in the upper end surface of tool holder 1, the fixed assembly of setting in the upper side of mounting head 2 and the reinforcing assembly of setting in the front side outer wall of mounting head 2, the fixed assembly includes the mounting groove 301 of being opened in the upper side of mounting head 2, the tool bit 302 of being detachably inserted in the inside of mounting groove 301, the reinforcing assembly includes the outer plate 401 of being set in the front end outer surface of mounting head 2, the expansion slot 402 of being opened in the inside of outer plate 401, the clamping plate 405 of being movably installed in the inside of expansion slot 402, the thread of the upper side surface of clamping plate 405 is embedded in the thread of the outer wall of fixing bolt 305, that is, the secondary fixing of fixing bolt 305 can be carried out, guarantee the stable replacement of tool bit 302 fixed. Embodiment two

[0024] In the embodiment, in addition to including all the technical features in embodiment one, it also includes: the internal screw hole 303 of being opened in the front side surface of tool bit 302, the external screw hole 304 of being opened in the front end side wall of mounting groove 301 corresponding to internal screw hole 303, by thread, it is engaged in internal screw hole 303 and external screw hole 304 and is taken out by left rotation, convenient to take out or install.

[0025] Further, the internal screw hole 303 and external screw hole 304 are jointly installed with fixing bolt 305 inside, fixing bolt 305 is rotated in external screw hole 304 to the right until entering internal screw hole 303, and the preliminary fixing of tool bit 302 can be completed.

[0026] Further, the telescopic slot 402 inside the lower position of the clamping plate 405 is provided with a telescopic rod 403, the outer wall of the telescopic rod 403 is provided with a spring 404, the telescopic rod 403 and the spring 404 push the clamping plate 405 upwards to extend upwards in the telescopic slot 402.

[0027] Further, the front surface of the telescopic slot 402 is provided with a slot 406, the front end surface of the clamping plate 405 is provided with a pull plate 407 matched with the slot 406, pulling the pull plate 407 to move downwards in the slot 406, driving the rear end clamping plate 405 to move downwards in the telescopic slot 402, facilitating disassembly or installation positioning.

[0028] Further, the clamping thread on the upper surface of the clamping plate 405 is matched with the thread on the outer wall of the fixing bolt 305, the clamping thread on the upper surface of the clamping plate 405 is embedded in the thread on the outer wall of the fixing bolt 305, so that the fixing bolt 305 can be fixed again.

[0029] Working principle: when the cutter head 302 of the milling cutter needs to be replaced, the fixing bolt 305 is twisted outward, engaged in the inner screw hole 303 and the outer screw hole 304 and rotated to the left to be taken out, the cutter head 302 is pulled upwards to be separated from the installation slot 301, so that the cutter head 302 can be disassembled, the replaced cutter head 302 is inserted into the installation slot 301, the fixing bolt 305 is twisted to the right in the outer screw hole 304 until it enters the inner screw hole 303, so that the cutter head 302 can be preliminarily fixed, making replacement more convenient, before the fixing bolt 305 is installed, the pull plate 407 is pulled downwards to move downwards in the slot 406, driving the rear end clamping plate 405 to move downwards in the telescopic slot 402, pressing and shrinking the hydraulic rod 403 and the spring 404, after the fixing bolt 305 is installed, the pulling force on the pull plate 407 is released, the telescopic rod 403 and the spring 404 push the clamping plate 405 upwards to extend upwards in the telescopic slot 402, so that the clamping thread on the upper surface of the clamping plate 405 is embedded in the thread on the outer wall of the fixing bolt 305, so that the fixing bolt 305 can be fixed again, ensuring the stability of the cutter head 302 replacement.

[0030] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of equivalent elements of the claims are intended to be embraced in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

[0031] Furthermore, it should be understood that although the description is made according to the embodiments, not every embodiment contains only one independent technical solution, and the description is made in this way only for the sake of clarity, and the person skilled in the art should consider the description as a whole, and the technical solutions in each embodiment can also be combined appropriately to form other embodiments that the person skilled in the art can understand.

Claims

1. A CBN milling tool for machining of ceramic materials, characterized in that: The utility model relates to a cutting tool, including the cutter seat (1), set up the mounting head (2) of cutter seat (1) upper end surface, set up the fixed component of mounting head (2) upper side and set up the reinforcing component of mounting head (2) front side outer wall, The fixed component includes the installation slot (301) set up in mounting head (2) upper side, the cutter head (302) is detachably inserted in the inside of installation slot (301), The reinforcing component includes the outer plate (401) set up in mounting head (2) front end outer surface, the telescopic slot (402) is set up in the inside of outer plate (401), the clamping plate (405) is movably installed in the inside of telescopic slot (402).

2. A CBN milling tool processed from a ceramic material according to claim 1, characterized in that: The cutter head (302) front side surface sets up the inner screw hole (303), and the installation slot (301) front end side wall sets up the outer screw hole (304) corresponding with the inner screw hole (303).

3. A CBN milling tool processed from a ceramic material according to claim 2, characterized in that: The inner screw hole (303) and outer screw hole (304) are equipped with the fixed bolt (305) in the inside cooperation.

4. The CBN milling cutter processed from a ceramic material according to claim 1, characterized in that: The telescopic slot (402) inside the lower side position of clamping plate (405) is installed the telescopic rod (403), and the telescopic rod (403) outer wall is equipped with spring (404) with sleeve.

5. The CBN milling cutter processed from a ceramic material according to claim 1, characterized in that: The telescopic slot (402) front side surface sets up the slot (406), and the clamping plate (405) front end surface sets up the pull plate (407) with the slot (406) intercoordination.

6. A CBN milling tool processed from a ceramic material according to claim 1, characterized in that: The clamping plate (405) upper side surface sets up the clamping thread with the thread on the outer wall of fixed bolt (305) intercoordination.

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