Double-sided chamfering tool

Abstract

The utility model relates to the technical field of mechanical milling cutters, in particular to a double-sided chamfering cutter which comprises a cutter handle, a cross-shaped positioning groove is formed in the cutter handle, a fixing pin is arranged at the upper end of the middle of the cutter handle, a shifting rod is connected to the lower end of the middle of the cutter handle in a sliding mode, and a blade assembly is inserted into the cross-shaped positioning groove. Two sets of knife petals are arranged at one end of the blade assembly in a bilateral symmetry mode, and cutting edges are fixedly connected to the outer sides of the knife petals; according to the double-sided chamfering tool, rapid butt joint installation is achieved mainly by arranging the cross-shaped positioning groove in the tool handle and arranging the cross-shaped positioning block on the blade assembly, the blade assembly is fixed by arranging the fixing pin on the tool handle, and the blade assembly is disassembled by arranging the limiting sliding groove and the shifting rod on the tool handle. By means of the structures, the blade can be rapidly disassembled and assembled, and the machining efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical milling processing cutter technical field, concretely is a double chamfer cutter. BACKGROUND

[0002] The chamfer cutter is a kind of cutter type widely used in machining, is used to process chamfer process, and the double chamfer cutter is a kind of cutter with two symmetrical cutting surfaces, which can simultaneously complete the chamfering of the upper and lower edges of the workpiece.

[0003] The double chamfer cutter disclosed in the patent with the announcement number CN217044770U relates to the technical field of mechanical milling processing cutter, which includes a cutter bar, a cutter hole is formed in the side wall of the cutter bar, an elastic member is fixed in the cutter hole, a chamfer cutter is fixed on the elastic member, the cutting edge of the chamfer cutter has at least two, and the directions of the at least two cutting edges are opposite; the movement direction of the elastic member is perpendicular to the rotation axis of the cutter bar. At least one cutting edge of the chamfer cutter is opposite to the commonly used cutter cutting edge direction of numerical control milling, and the cutting edge can chamfer the back surface of the workpiece. When the cutter bar does not rotate, the chamfer cutter is retracted into the cutter hole, so that the chamfer cutter does not damage other parts of the workpiece during the movement of the cutter bar, until the cutter bar moves to the position of the back surface of the workpiece to be chamfered, the cutter bar rotates to generate centrifugal force, so that the elastic member drives the chamfer cutter to extend out of the cutter hole and protrude from the cutter bar to chamfer the corresponding position of the back surface of the workpiece.

[0004] The above-mentioned scheme and the double chamfer cutter in the prior art have the problems of wear and tear of the cutting edge after long-term use, which affects the processing efficiency. The existing replacement method is to replace the cutter and the handle as a whole, which easily causes resource waste and cost increase. There is also a method of replacing the cutter by disassembling the screw with a tool, which is not quick enough and affects the processing efficiency. Therefore, there is a need for improvement and optimization of the structure for convenient replacement of the cutter. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a double chamfer cutter to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a double chamfer cutter includes a handle, a cross positioning groove is arranged in the handle, a fixed column pin is arranged on the upper end of the middle part of the handle, a pull rod is slidably connected to the lower end of the middle part of the handle, a cutter assembly is inserted into the cross positioning groove, two groups of cutter petals are symmetrically arranged on one end of the cutter assembly, and a cutting edge is fixedly connected to the outer side of the cutter petal.

[0007] Preferably, one end of the handle is provided with a mounting head, the middle of the handle is provided with a first fixed circular hole and a limiting sliding groove, the handle is symmetrically provided with an open slot at one end, the open slot is respectively corresponding to a group of blade positions, and the inner wall of the handle is provided with a plurality of limiting protrusions.

[0008] Preferably, the first fixed circular hole is fixedly provided with a conical spring at the lower end, the large end of the conical spring is fixedly connected to the inner wall of the handle, and the small end of the conical spring is fixedly connected to the fixed column pin.

[0009] Preferably, the limiting sliding groove is limitedly connected to the push rod, the middle of the push rod is fixedly connected with a connecting spring, and one end of the connecting spring is slidingly connected to the limiting sliding groove.

[0010] Preferably, the blade assembly comprises a blade body, the blade body is fixedly connected with a cross positioning block at one end, the blade body is provided with a second fixed circular hole at the upper end, the blade body is provided with a clamping and pushing circular hole at the lower end, and the blade body is fixedly connected with two groups of blade petals which are symmetrically arranged on the left and right.

[0011] Preferably, the second fixed circular hole is corresponding to the first fixed circular hole and the fixed column pin in position, and the clamping and pushing circular hole is corresponding to the push rod in position.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] The double-face chamfering tool mainly realizes quick butt joint installation through the cross positioning groove arranged in the handle and the cross positioning block arranged on the blade assembly, the blade assembly is fixed through the fixed column pin arranged on the handle, and the blade assembly is disassembled through the limiting sliding groove and the push rod arranged on the handle. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structure schematic view of a double-face chamfering tool;

[0015] Figure 2 It is another view structure schematic view of a double-face chamfering tool;

[0016] Figure 3 It is a structure schematic view of a handle part of a double-face chamfering tool;

[0017] Figure 4 It is Figure 3 It is an enlarged schematic view of part A;

[0018] Figure 5 It is a structure schematic view of a blade assembly part of a double-face chamfering tool;

[0019] Figure 6 It is a sectional view of a double-face chamfering tool;

[0020] Figure 7 For Figure 6 Enlarged view of the middle B part.

[0021] In the figure: handle 1, mounting head 101, first fixed circular hole 102, limit sliding groove 103, open slot 104, cross positioning groove 105, conical spring 106, fixed column pin 107, lever 108, connecting spring 109, limit protrusion 110, blade assembly 2, blade body 201, blade petals 202, blade edge 203, cross positioning block 204, second fixed circular hole 205, clamping round hole 206. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme of the utility model to be clear, complete description, and the advantage is more clear and clear, the following combining with the figure to the utility model embodiment carries out further detailed explanation. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all embodiments, only to explain the embodiments of the utility model, and not for limiting the embodiments of the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor are within the scope of the utility model protection.

[0023] Please refer to Figures 1-7 The utility model provides two preferred scheme embodiments:

[0024] Embodiment one: a double-face chamfering cutter includes handle 1, handle 1 inside is equipped with cross positioning groove 105, handle 1 middle part upper end is equipped with fixed column pin 107, handle 1 middle part lower end is slidably connected with lever 108, cross positioning groove 105 is inserted with blade assembly 2, blade assembly 2 one end is symmetrically equipped with two groups of blade petals 202, and blade petals 202 outside is fixedly connected with blade edge 203;Handle 1 one end is equipped with mounting head 101, and handle 1 middle part is equipped with first fixed circular hole 102 and limit sliding groove 103, and handle 1 one end is symmetrically equipped with open slot 104, and open slot 104 is respectively each with a group of blade edge 203 position correspondence, and handle 1 inner wall is equipped with multiple limit protrusions 110 for fixing blade assembly 2;First fixed circular hole 102 lower end is fixedly equipped with conical spring 106, and the large mouth end of conical spring 106 is fixedly connected to the inner wall of handle 1, and the small mouth end of conical spring 106 is fixedly connected to fixed column pin 107;Limit sliding groove 103 is limitedly connected in lever 108, and lever 108 middle part is fixedly connected with connecting spring 109, and connecting spring 109 one end is slidably connected to limit sliding groove 103.

[0025] In use, one end of the mounting head 101 is connected to an electric drill or machine tool equipment, the left and right symmetrical opening slots 104 opened at one end of the tool holder 1 are used to set the cutting edges 203 on the blade assembly 2, the cutting edges 203 are connected to the petals 202 with elastic deformation ability, when the tool holder 1 passes through the hole to be machined, one side of the cutting edge 203 performs chamfering on one side of the round hole when entering, and the other side of the cutting edge 203 performs chamfering on the other side of the round hole when exiting, the push rod 108 is clamped in the limiting sliding groove 103, the push rod 108 can slide on the limiting sliding groove 103, the push rod 108 is in an initial state of not being inserted into the clamping and pushing round hole 206, and manual pressing of the push rod 108 can allow it to be inserted into the clamping and pushing round hole 206.

[0026] In the embodiment two, on the basis of the embodiment one, the blade assembly 2 comprises a blade body 201, the cross positioning block 204 is fixedly connected to one end of the blade body 201, the second fixed round hole 205 is arranged at the upper end of the blade body 201, the clamping and pushing round hole 206 is arranged at the lower end of the blade body 201, and the two groups of petals 202 are fixedly connected to one end of the blade body 201; the second fixed round hole 205 corresponds to the first fixed round hole 102 and the fixed column pin 107 in position, and the clamping and pushing round hole 206 corresponds to the push rod 108 in position.

[0027] In use, when the blade assembly 2 is installed, the fixed column pin 107 on the tool holder 1 is pulled out and inserted into the blade assembly 2, the cross positioning block 204 and the cross positioning slot 105 are inserted, the fixed column pin 107 is inserted into the second fixed round hole 205 in the process of restoring the original state of the conical spring 106, and the blade assembly 2 is quickly and firmly installed on the tool holder 1, when the blade assembly 2 is disassembled, the fixed column pin 107 is first lifted, the push rod 108 is then pressed and inserted into the clamping and pushing round hole 206, the push rod 108 is pressed and slid on the limiting sliding groove 103, and the cross positioning block 204 on the blade assembly 2 can be taken out of the cross positioning slot 105, so that the blade assembly 2 can be taken down for maintenance or replacement.

[0028] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A double-sided chamfering tool, characterized in that: The tool includes a handle (1), which has a cross-shaped positioning groove (105) inside. A fixing pin (107) is provided at the upper middle part of the handle (1). A lever (108) is slidably connected to the lower middle part of the handle (1). A blade assembly (2) is inserted into the cross-shaped positioning groove (105). Two sets of blades (202) are symmetrically arranged on one end of the blade assembly (2). A blade edge (203) is fixedly connected to the outer side of the blade edge (202).

2. The double-sided chamfering tool according to claim 1, characterized in that: The handle (1) is provided with a mounting head (101) at one end, a first fixing round hole (102) and a limiting slide groove (103) in the middle of the handle (1), and an opening groove (104) symmetrically provided on the left and right sides of one end of the handle (1). Each opening groove (104) corresponds to a set of blades (203). The inner wall of the handle (1) is provided with multiple sets of limiting protrusions (110).

3. A double-sided chamfering tool according to claim 2, characterized in that: A conical spring (106) is fixedly provided at the lower end of the first fixed circular hole (102). The large end of the conical spring (106) is fixedly connected to the inner wall of the handle (1), and the small end of the conical spring (106) is fixedly connected to the fixed pin (107).

4. A double-sided chamfering tool according to claim 2, characterized in that: The limiting groove (103) is locked to the lever (108), and a connecting spring (109) is fixedly connected to the middle of the lever (108). One end of the connecting spring (109) is slidably connected to the limiting groove (103).

5. A double-sided chamfering tool according to claim 1, characterized in that: The blade assembly (2) includes a blade body (201), one end of which is fixedly connected to a cross positioning block (204), the upper end of which is provided with a second fixing round hole (205), the lower end of which is provided with a locking round hole (206), and one end of which is fixedly connected to two sets of symmetrical blade petals (202).

6. A double-sided chamfering tool according to claim 5, characterized in that: The second fixing hole (205) corresponds to the first fixing hole (102) and the fixing pin (107), and the snap-on hole (206) corresponds to the lever (108).

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