Large-length-diameter-ratio taper shank shockproof cutter bar

Abstract

The utility model relates to a shakeproof cutter bar with a taper shank with a large length-diameter ratio, which belongs to the field of cutter bar structures and comprises a damping device, a cutter body and a shaking core, the cutter body is connected to the front end of the damping device, and the diameters of the front end of the damping device and the whole body of the cutter body are gradually reduced from back to front so as to form a cone structure; a round hole is formed in the axis position of the cutter body, damping end covers are arranged at the front end and the rear end of the round hole, and the vibration core is clamped in the round hole through the damping end covers at the two ends. The length-diameter ratio of the cutter bar is large, compared with a cylindrical cutter bar, the cutter bar of the structure is more suitable for being used in a narrow space, interference can be effectively avoided when the cutter bar is used, large cutting force can be borne, the shockproof effect is good, the machining precision is high, and the service life is long.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the tool bar structure field, concretely relates to a big long diameter ratio cone handle anti -jarring tool bar. BACKGROUND

[0002] Nuclear power liquid metal pump large impeller, shell and other parts, belong to liquid metal pump overcurrent parts, require enough size precision (flow deviation is not more than 0.3mm) and flow deviation consistency, require impeller whole dynamic balance quality grade G2.5 grade within, material: 316 austenitic stainless steel, under high temperature, high speed working condition long-term use, wherein (sodium medium is an example): working temperature is 355 DEG C, limit temperature can reach 550 DEG C, service life is more than 40 years. Impeller is whole double suction closed impeller, maximum cutting depth is more than 450mm, the narrowest space distance is only 1.25mm under cutting processing state. The current tool bar structure such as the anti -jarring tool bar of the utility model discloses a cylindrical anti -jarring tool bar, tool trajectory space is seriously limited, tool size has strict restriction, and interference will be caused when using. CONTENT OF THE UTILITY MODEL

[0003] The utility model discloses a big long diameter ratio cone handle anti -jarring tool bar to solve the problem that the trajectory space of traditional cylindrical anti -jarring tool bar is seriously limited and interference is still caused when using.

[0004] In order to realize the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0005] The utility model relates to a big long diameter ratio cone handle anti -jarring tool bar, including damping device, tool body and shock core, the tool body is connected in the front end of damping device, and the front end of damping device and the whole of tool body gradually reduce from back to front diameter, and then form the conical structure, the axial position of tool body is equipped with round hole, and the front and back ends of round hole are equipped with damping end cover, the shock core is clamped in the round hole through the damping end cover of both ends.

[0006] Preferably, the inside of the damping device is provided with a liquid inlet hole, and a cooling pipe is further arranged in the round hole of the tool body, and the pipe opening of the cooling pipe is communicated with the liquid inlet hole.

[0007] Preferably, the both ends of the shock core are provided with clamping grooves, and the both ends of the cooling pipe are fixed in the round hole of the tool body through the damping rubber embedded in the clamping grooves.

[0008] Preferably, the front end of the tool body is provided with a mounting groove for mounting a tool bit.

[0009] Compared with the prior art, the technical scheme of the utility model has the following beneficial effects:

[0010] 1. The utility model relates to a big long diameter ratio taper handle anti -jarring cutter bar, including damping device and cutter body, the cutter body is connected in the front end of damping device, and the diameter of the whole of damping device's front end and cutter body gradually reduces from back to front, and then forms the taper structure, forms the cutter bar structure of big long diameter ratio, compared with the cylindrical cutter bar, the cutter bar of this structure is more suitable for using in the narrow space, can effectively avoid causing interference when using.

[0011] 2. The utility model relates to a big long diameter ratio taper handle anti -jarring cutter bar is equipped with the round hole in the axle position of cutter body, and the front and back ends of round hole are equipped with damping end cover, the shock core is clamped in the round hole through the damping end cover of both ends, can bear the big cutting force, and the processing precision is higher. DRAWINGS

[0012] Fig. 1 is the radial section view of big long diameter ratio taper handle anti -jarring cutter bar;

[0013] Figure 2 It is the schematic diagram of the connecting structure (A node) of damping device, cutter body, shock core and cooling pipe.

[0014] Among them, 1-cutter body, 2-damping device, 3-damping end cover, 4-damping rubber, 5-shock core, 6-cooling pipe, 7-liquid inlet hole, 8-mounting groove, 9-tool bit. SPECIFIC EMBODIMENT

[0015] For further understanding the contents of the utility model, combining with embodiment to the utility model is described in detail, the following embodiment is used to explain the utility model, but not to limit the scope of the utility model.

[0016] Referring to the drawings Figure 1 The utility model relates to a big long diameter ratio taper handle anti -jarring cutter bar, including damping device 2, cutter body 1 and shock core 5, the cutter body 1 is connected in the front end of damping device 2, and the diameter of the whole of damping device 2's front end and cutter body 1 gradually reduces from back to front, and then forms the taper structure, to this increase big long diameter ratio taper handle anti -jarring cutter bar whole's long diameter ratio, and then make it more suitable in narrow space uses.

[0017] The axle position of cutter body is equipped with round hole, referring to the drawings Figure 2 The front and back ends of round hole are equipped with damping end cover 3, the shock core 5 is clamped in the round hole through the damping end cover of both ends, and then reduce the vibration in the use process of anti -jarring cutter bar, make the processing precision of anti -jarring cutter bar higher, and the service life is longer.

[0018] The damping device 2 is internally provided with a liquid inlet hole 7, and the circular hole of the cutter body 1 is further provided with a cooling pipe 6, the pipe opening of the cooling pipe 6 is communicated with the liquid inlet hole 7; both ends of the shock core 5 are provided with clamping grooves, and both ends of the cooling pipe 6 are fixed in the circular hole of the cutter body 1 through the damping rubber 4 embedded in the clamping grooves; during use, cooling liquid is passed into the cooling pipe 6 through the liquid inlet hole 7, and then the shockproof cutter bar is cooled.

[0019] The front end of the cutter body 1 is provided with a mounting groove 8 for mounting a cutter head 9.

[0020] The utility model is described in detail in combination with the embodiments above, but the content described can only be the preferred embodiment of the utility model and cannot be considered as used for limiting the implementation range of the utility model. Any equivalent change and improvement made according to the application range of the utility model should still belong to the patent coverage range of the utility model.

Claims

1. A large length to diameter ratio chisel shank shock absorbing tool rod characterized by: The damping device, the cutter body and the shock core are provided, the cutter body is connected to the front end of the damping device, the front end of the damping device and the whole cutter body gradually decrease in diameter from back to front, thereby forming a cone structure, the shaft center position of the cutter body is provided with a circular hole, the front and back ends of the circular hole are provided with damping end covers, and the shock core is clamped in the circular hole through the damping end covers at both ends.

2. The long aspect ratio taper shank shock absorbing club shaft of claim 1, wherein: The inside of the damping device is provided with a liquid inlet hole, and the circular hole of the cutter body is further provided with a cooling pipe, the pipe opening of the cooling pipe is communicated with the liquid inlet hole.

3. The long aspect ratio taper shank shock resistant club shaft of claim 2, wherein: The both ends of the shock core are provided with clamping grooves, and the both ends of the cooling pipe are fixed in the circular hole of the cutter body through the damping rubbers embedded in the clamping grooves.

4. The long aspect ratio taper shank shock resistant club shaft of claim 1, wherein: The front end of the cutter body is provided with a mounting groove for mounting a cutter head.

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