Cross positioning and locking boring cutter

Abstract

The utility model relates to the technical field of machining, and particularly discloses a cross positioning and locking boring cutter, which comprises a cutter holder, a boring cutter body, a locking bolt and a positioning rod, the cutter holder is provided with a mounting hole, the boring cutter body is embedded in the mounting hole, the cutter holder is provided with positioning holes, and two groups of positioning holes are respectively arranged on the outer surface wall of the cutter holder. The boring cutter body is provided with two groups of positioning holes, the two groups of positioning holes are respectively communicated with the mounting hole, the two groups of positioning holes are matched with each other, the positioning rod is embedded in the two groups of positioning holes and penetrates through the mounting hole, the tail end of the boring cutter body is provided with a positioning opening, the angle of the positioning opening is 90 degrees, and the locking bolt is in threaded connection with the cutter holder and is matched with the boring cutter body. According to the boring cutter, the mounting and dismounting speed of the boring cutter body is increased, the mounting and dismounting operation of the boring cutter body is simpler and quicker, the stability is high in the machining process, and the boring cutter body is not prone to displacement and rotation.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of machining, especially relates to a cross positioning locking boring tool. BACKGROUND

[0002] At present, boring tool is a kind of boring cutter, generally for round handle structure, mainly used for the rough machining, semi-finishing and finishing of existing hole, the most commonly used occasion is hole processing, hole expansion, profiling etc., in addition, boring tool can also be used on boring machine, lathe or milling machine, strong adaptability, in the daily cutting process, frequent tool mounting and dismounting, cylindrical pin is sheared, and is broken in less than a year, and the repair and dismounting time is long.

[0003] The prior art CN103722395A provides a milling and boring machine tool mounting mechanism spline sleeve positioning structure, including the outer shaft with axial through hole, and the inner shaft is arranged in the through hole of the outer shaft, and the outer wall of the outer shaft and the outer wall of the inner shaft have a rotating gap, the end face of the inner shaft in the outer shaft is provided with a blind hole, a spline sleeve is arranged in the through hole of the outer shaft, one end of the spline sleeve is inserted into the blind hole of the inner shaft, the inner wall of the blind hole is provided with at least one key groove in the axial direction from the end face of the inner shaft, the outer wall of the spline sleeve is provided with a containing groove for containing the key block, the key block in the containing groove is inserted into the key groove, and the locking member for locking the inner shaft and the spline sleeve.

[0004] But in the prior art, spline locking operation is more complicated, and a lot of time is consumed when replacing boring tool. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of cross positioning locking boring tool, to solve the technical problem that spline locking operation is more complicated in prior art, and a lot of time is consumed when replacing boring tool.

[0006] To achieve the above-mentioned purpose, the utility model adopts a kind of cross positioning locking boring tool, including tool holder, boring tool body, locking bolt and positioning rod, the tool holder has mounting hole, the boring tool body is embedded in the mounting hole, the tool holder has positioning hole, the number of the positioning hole is two groups, two groups of positioning hole are respectively arranged in the outer surface wall of the tool holder, two groups of positioning hole are respectively communicated with the mounting hole, and the two groups of positioning hole are mutually adapted, the positioning rod is embedded in two groups of positioning hole, and the positioning rod penetrates the mounting hole, the tail end of the boring tool body has positioning opening, the angle of the positioning opening is 90 °, and the positioning opening and the positioning rod are mutually adapted, the locking bolt is threadedly connected with the tool holder and located on the outer surface wall of the tool holder, and the locking bolt and the boring tool body are mutually adapted.

[0007] Among them, the boring tool body has round handle ladder, and the round handle ladder is located on the outer surface wall of the boring tool body.

[0008] The boring tool body further has a tool tip chamfer alpha, the tool tip chamfer alpha is 6°, and an end of the tool tip chamfer alpha has a circular arc R1 with a radius of 0.2 mm.

[0009] The boring tool body further has a chamfer beta, the chamfer beta is 30°.

[0010] The boring tool body further has a tool tip chamfer gamma, the tool tip chamfer gamma is 8°.

[0011] The boring tool body further has a chamfer delta on the inner side of the tool head, the chamfer delta is 6°, and an end of the chamfer delta has a circular arc R2 with a radius of 0.2 mm.

[0012] The cross positioning and locking boring tool is characterized in that the positioning rod is inserted into the positioning hole, and the positioning rod penetrates through the mounting hole and the tool seat; the positioning rod is embedded in the inside of the tool seat; the boring tool body is inserted into the mounting hole, and the positioning opening contacts and matches the positioning rod; the positioning rod is placed on the inner side of the positioning opening, and the boring tool body is positioned by the positioning rod; the locking bolt is screwed into the tool seat, and the locking bolt extrudes the outer wall of the boring tool body, thereby locking the boring tool body, avoiding the expansion and contraction of the boring tool body in the tool seat during machining, ensuring the stability of the boring tool body, extruding and clamping the boring tool body by the locking bolt, limiting the boring tool body under the extrusion of the locking bolt, preventing the boring tool body from falling off during use, and fixing the boring tool body by extrusion between the head of the limiting bolt and the boring tool body, instead of relying on the friction generated by the rotation of the thread, thereby effectively improving the fastening effect, prolonging the service life, adapting to various environments, improving the installation and disassembly speed of the boring tool body, making the installation and disassembly of the boring tool body more simple and fast, and ensuring high stability during machining. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.

[0014] Figure 1It is a structure schematic view of the cross positioning and locking boring cutter.

[0015] Figure 2 It is a partial structure schematic view of the cross positioning and locking boring cutter.

[0016] Figure 3 It is a structure schematic view of the boring cutter body.

[0017] Figure 4 It is an elevation view of the boring cutter body.

[0018] Figure 5 It is an enlarged view of the partial structure of the boring cutter body.

[0019] 101-seat, 102-boring cutter body, 103-locking bolt, 104-positioning rod, 105-mounting hole, 106-positioning hole, 107-positioning opening, 108-round handle ladder. Specific implementation

[0020] Please refer to Figures 1 to 5 The utility model provides a kind of cross positioning and locking boring cutter, including seat 101, boring cutter body 102, locking bolt 103 and positioning rod 104, the seat 101 has mounting hole 105, the boring cutter body 102 is embedded in the mounting hole 105, the seat 101 has positioning hole 106, the quantity of the positioning hole 106 is two groups, two groups of positioning hole 106 are respectively arranged in the outer surface wall of the seat 101, two groups of positioning hole 106 are respectively communicated with the mounting hole 105, and the two groups of positioning hole 106 are mutually adapted, the positioning rod 104 is embedded in two groups of positioning hole 106, and the positioning rod 104 passes through the mounting hole 105, the tail end of the boring cutter body 102 has positioning opening 107, the positioning opening 107 angle is 90 °, and the positioning opening 107 and the positioning rod 104 are mutually adapted, the locking bolt 103 is connected with the seat 101 by screw thread, and is located in the outer surface wall of the seat 101, and the locking bolt 103 and the boring cutter body 102 are mutually adapted.

[0021] In the embodiment, the positioning rod 104 is inserted into the positioning hole 106, and the positioning rod 104 penetrates the mounting hole 105 and the tool holder 101, the positioning rod 104 is embedded in the inside of the tool holder 101, the boring cutter body 102 is inserted into the mounting hole 105, the positioning opening 107 contacts the positioning rod 104, the positioning opening 107 and the positioning rod 104 are matched with each other, the positioning rod 104 is located inside the positioning opening 107, the boring cutter body 102 is positioned by the positioning rod 104, the locking bolt 103 is screwed into the tool holder 101, the locking bolt 103 extrudes the outer wall of the boring cutter body 102, so that the boring cutter body 102 is locked, the boring cutter body 102 is prevented from stretching and moving in the tool holder 101 during processing, the stability of the boring cutter body 102 is ensured, the boring cutter body 102 is extruded and clamped by the locking bolt 103, the boring cutter body 102 is limited by the extrusion force of the locking bolt 103, the boring cutter body 102 is prevented from falling off during use, the head of the limiting bolt is fixed between the boring cutter body 102 by extrusion, not depending on the friction force generated by the rotation of the thread, the fastening effect can be effectively improved, the service life is prolonged, and various environments are adapted.

[0022] Further, the boring cutter body 102 has a round handle ladder 108, and the round handle ladder 108 is located on the outer wall of the boring cutter body 102.

[0023] In the embodiment, the round handle ladder 108 can improve the processing efficiency of the boring cutter body 102 during use, avoids the tedious process of replacing the boring cutter body 102 or adjusting the processing parameters in the traditional processing method, and significantly improves the processing efficiency and the versatility and flexibility of the boring cutter body 102.

[0024] Further, the boring cutter body 102 also has a tool tip chamfer α, the tool tip chamfer α is 6°, and the end of the tool tip chamfer α has a circular arc R1 with a radius of 0.2 mm.

[0025] In the embodiment, the setting of the tool tip chamfer α and the circular arc R1 can make the tool tip end of the boring tool body 102 better contact the workpiece, thereby realizing cutting of the inner hole of the workpiece. At the same time, the setting of the circular arc R1 can accurately control the cutting size, significantly reduce the error, reduce the vibration and jumping in the cutting process, so as to obtain a smoother and more uniform machining surface, reduce the resistance in the cutting process, make the cutting more smooth, help to reduce the cutting temperature and cutting force, prolong the service life of the boring tool body 102. Due to the reduction of cutting assistance, the boring tool body 102 can cut off the material faster, improve the cutting efficiency, and help to save energy in the cutting process. The circular arc R1 can more evenly distribute the cutting force, reduce the wear of the boring tool body 102 in the cutting process, help to prolong the service life of the boring tool body 102, reduce the frequency and cost of replacing the boring tool body 102, and reduce the damage of the boring tool body 102 caused by vibration and jumping. The chamfer α helps to disperse the stress of the boring tool body 102 and reduce the stress concentration of the boring tool body 102 in the cutting process, thereby reducing the risk of damage of the boring tool body 102 due to excessive stress. The cutting force and heat in the cutting process can be reduced, and the deformation problem of the tool caused by thermal cracks and cutting force heat can be reduced.

[0026] Further, the boring tool body 102 also has a chamfer β, and the chamfer β is 30°.

[0027] In the embodiment, the chamfer β can avoid collision between the boring tool body 102 and the workpiece when the boring tool body 102 enters the inside of the workpiece, reduce the size of the end of the boring tool body 102, and play a role in preventing collision. The chamfer β can also make the boring tool body 102 cut the workpiece more stably and not easily vibrate, and can effectively control the direction of chips.

[0028] Further, the boring tool body 102 also has a tool tip chamfer γ, and the tool tip chamfer γ is 8°.

[0029] In the embodiment, the tool tip chamfer γ is 8°, so that the tool tip part of the boring tool body 102 is an acute angle, the cutting force generated during cutting is relatively small, the vibration and jumping in the cutting process can be reduced, and the machining quality can be improved.

[0030] Further, the boring tool body 102 has a chamfer δ on the inner side of the tool head, the chamfer δ is 6°, and the end of the chamfer δ has a circular arc R2 with a radius of 0.2 mm.

[0031] In the embodiment, the chamfer δ and the circular arc R2 can play a role in cooling when cutting the workpiece, and the chamfer setting can make the cutting material keep a continuous state, is favorable to keeping the stability of the cutting process, and can greatly improve the processing efficiency and the processing quality.

[0032] The above only discloses a preferred embodiment of the utility model, and of course cannot limit the scope of the utility model, and those skilled in the art can understand that all or part of the above-mentioned embodiments can be implemented, and equivalent changes made according to the utility model claims still belong to the range covered by the utility model.

Claims

1. A cross positioning locking boring tool, characterized in that, comprising a tool holder, a boring tool body, a locking bolt and a positioning rod, the tool holder has a mounting hole, the boring tool body is embedded in the mounting hole, the tool holder has a positioning hole, the number of the positioning hole is two groups, two groups of the positioning hole are respectively arranged on the outer wall of the tool holder, two groups of the positioning hole are respectively communicated with the mounting hole, and the two groups of the positioning hole are matched with each other, the positioning rod is embedded in two groups of the positioning hole, and the positioning rod penetrates through the mounting hole, the tail end of the boring tool body has a positioning opening, the angle of the positioning opening is 90°, and the positioning opening is matched with the positioning rod, the locking bolt is threadedly connected with the tool holder and located on the outer wall of the tool holder, and the locking bolt is matched with the boring tool body.

2. The cross positioning locking boring tool according to claim 1, characterized in that, the boring tool body has a round handle ladder, and the round handle ladder is located on the outer wall of the boring tool body.

3. The cross positioning locking boring tool according to claim 1, characterized in that, the boring tool body further has a tool tip chamfer α, the tool tip chamfer α is 6°, and the end of the tool tip chamfer α has a circular arc R1 with a radius of 0.2 mm.

4. The cross positioning locking boring tool according to claim 1, characterized in that, the boring tool body further has a chamfer β, and the chamfer β is 30°.

5. The cross positioning locking boring tool according to claim 1, characterized in that, the boring tool body further has a tool tip chamfer γ, and the tool tip chamfer γ is 8°.

6. The cross positioning locking boring tool according to claim 1, characterized in that, the inner side of the tool head of the boring tool body has a chamfer δ, the chamfer δ is 6°, and the end of the chamfer δ has a circular arc R2 with a radius of 0.2 mm.

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