CN218694452U - Small-bore body pipe high accuracy rifling broaching device - Google Patents
Small-bore body pipe high accuracy rifling broaching device Download PDFInfo
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- CN218694452U CN218694452U CN202222612625.6U CN202222612625U CN218694452U CN 218694452 U CN218694452 U CN 218694452U CN 202222612625 U CN202222612625 U CN 202222612625U CN 218694452 U CN218694452 U CN 218694452U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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Abstract
The utility model belongs to the technical field of machining, and relates to a high-precision rifling broaching device for a small-bore body pipe, which comprises a cutter body, a mandrel and a wire-drawing cutter; a stay wire cutter mounting groove is formed in the periphery of the cutter body and used for mounting a stay wire cutter, and a mandrel used for adjusting the cutting height of the stay wire cutter is arranged in the cutter body; the device is characterized in that the outer periphery of the cutter body is axially provided with a plate spring mounting groove matched with the wire drawing cutter mounting groove, a plate spring is movably connected in the plate spring mounting groove, and the plate spring is connected with the wire drawing cutter and used for absorbing the vibration of the wire drawing cutter during the broaching operation; secondly because this device is equipped with multiunit and acts as go-between cutter mounting groove and rather than the structure of adaptation be middle thick, the thin dabber in both ends, can realize the control to multiunit cutter broaching height when installing multiunit and act as go-between cutter, improve the machining efficiency of rifling broaching operation.
Description
Technical Field
The utility model belongs to the field especially relates to a small-bore body pipe high accuracy rifling broaching device.
Background
The existing small-caliber body pipe bore line processing method mainly comprises electrolytic processing and mechanical broaching processing. The electrolytic machining is characterized in that a plurality of rifles can be machined at one time, the machining efficiency is high, but the precision of the electrolytic process is easily influenced by factors such as current parameters and solution concentration, the precision is difficult to master, and the dimensional consistency of different positions of the whole rifling is poor; the mechanical broaching machining has the characteristics of high precision and good consistency of the whole rifling, but is limited by the small inner diameter of a small-bore body tube at present, and is mainly machined by adopting a broaching tool in the patent number CN103611981B at present, and the method has the defects that: the rifling machine is easy to vibrate in the using process, and vibration lines are generated on parts to influence the precision of rifling. In order to improve the precision of the small-bore body tube bore line processing, a new processing device is urgently needed to solve the problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a small-bore body pipe high accuracy rifling broaching device aims at solving easy vibration in the current rifling broaching operation, produces the line of shaking on the part, influences the precision scheduling problem.
The utility model is realized in such a way, the high-precision rifling broaching device for the small-bore body tube comprises a cutter body, a mandrel and a wire-drawing cutter; a stay wire cutter mounting groove is formed in the periphery of the cutter body and used for mounting the stay wire cutter, and the mandrel used for adjusting the cutting height of the stay wire cutter is arranged in the cutter body; the outer periphery of the cutter body is axially provided with a plate spring mounting groove matched with the stay wire cutter mounting groove, a plate spring is movably connected in the plate spring mounting groove, and the plate spring is connected with the stay wire cutter and used for absorbing vibration of the stay wire cutter during broaching operation.
Optionally, the leaf spring is of a curved resilient construction.
Optionally, one end of the stay wire cutter in the axial direction is provided with a plate spring mounting opening, and the plate spring mounting opening is connected with the plate spring.
Optionally, the knife body includes a chip pocket, a liquid spraying hole and a felt piece mounting groove, the knife body is of a hollow pipe structure, the chip pocket is arranged in the stay wire knife mounting groove, the liquid spraying hole is arranged on the lower portion of the chip pocket, the felt piece mounting groove is arranged above the liquid spraying hole, a felt piece is arranged in the felt piece mounting groove, and a plurality of small holes with the hole diameter lower than that of the liquid spraying hole are formed in the felt piece.
Optionally, the cutter body further comprises a screw mounting hole, the screw mounting hole is located in the center of the inside of the plate spring mounting groove, and an adjusting screw is arranged in the screw mounting hole.
Optionally, the inner side of the tail of the cutter body is movably connected with a plug, a through hole is formed in the plug, and the tail of the plug is provided with threads for being connected with a broaching machine.
Optionally, the cutter body periphery is equipped with preceding uide bushing and back uide bushing.
Optionally, the stay wire tool mounting grooves are distributed uniformly on the periphery of the tool body along the circumferential direction, and the stay wire tool is mounted in the stay wire tool mounting grooves and used for improving the broaching operation efficiency.
Optionally, the mandrel comprises three cylindrical structures and two conical structures, the three cylindrical structures are connected through the conical structures, and the conical structures are tangent to the bottom of the wire drawing tool.
Optionally, the dabber still includes square structure, screw hole and liquid jet orifice, and the front end the cylinder structure is kept away from cone structure one end is equipped with square structure, and is terminal the cylinder structure is kept away from cone structure one end is inside to be equipped with the screw hole, and is terminal the cylinder structure is close to cone structure outer wall is equipped with along circumference liquid jet orifice, liquid jet orifice during operation with the hydrojet hole constitutes the coolant liquid passageway.
About implementing the utility model discloses a beneficial technological effect does: firstly, the device is provided with the plate spring, so that the vibration of a rifling tool can be absorbed during the broaching operation of the rifling, and the precision of the broaching operation of the rifling is improved; secondly because this device is equipped with multiunit and acts as go-between cutter mounting groove and rather than the structure of adaptation be middle thick, the thin dabber in both ends, can realize the control to multiunit cutter broaching height when installing multiunit and act as go-between cutter, improve the machining efficiency of rifling broaching operation.
Drawings
Fig. 1 is a schematic diagram of the general structure of the present invention;
FIG. 2 is an internal structural view of the present invention;
fig. 3 is a schematic view of a cutter body of the present invention;
fig. 4 is a schematic view of a mandrel of the present invention;
fig. 5 is a cross-sectional view of the mandrel of the present invention;
fig. 6 is a schematic view of the leaf spring of the present invention;
FIG. 7 is a schematic view of the wire pulling tool of the present invention;
fig. 8 is a schematic view of a front guide sleeve of the present invention;
fig. 9 is a schematic view of the guiding rear sleeve of the present invention.
In the figure: 1. a cutter body; 1-1, a plate spring mounting groove; 1-2, mounting holes for screws; 1-3, a stay wire cutter mounting groove; 1-4, chip flutes; 1-5, liquid spraying holes; 1-6, a felt mounting groove; 2. a front guide sleeve; 3. a plate spring; 4. an adjusting screw; 5. a felt sheet; 6. a mandrel; 6-1, square structure; 6-2, a cylindrical structure; 6-3, a cone structure; 6-4, a threaded hole; 7. a rear guide sleeve; 8. a plug; 9. a wire drawing cutter; 9-1, a plate spring mounting opening; 10. and (7) a pin shaft.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. The meaning of "a number" is one or more than one.
A high-precision rifling broaching device for a small-bore body tube comprises a cutter body 1, a mandrel 6 and a wire drawing cutter 9; the periphery of the cutter body 1 is provided with stay wire cutter mounting grooves 1-3 for mounting a stay wire cutter 9, and a mandrel 6 for adjusting the cutting height of the stay wire cutter 9 is arranged in the cutter body 1; the periphery of the cutter body 1 is axially provided with a plate spring mounting groove 1-1 matched with the stay wire cutter mounting groove 1-3, a plate spring 3 is movably connected in the plate spring mounting groove 1-1, and the plate spring 3 is connected with a stay wire cutter 9 and used for absorbing the vibration of the stay wire cutter 9 during broaching operation.
According to the embodiment of the application, the existing rifling broaching device is lack of a device for inhibiting and absorbing vibration of a broaching tool during broaching operation, so that the precision of the rifling of the broaching tool during broaching operation is low.
The utility model discloses the creative leaf spring 3 that utilizes is connected with the cutter 9 of acting as go-between to absorb the vibration at broaching in-process cutter 9 of acting as go-between, prevent to produce the shake line on the part, improve the broaching operation precision.
Preferably, the matching mode of the plate spring 3 and the plate spring mounting groove 1-1 is transition matching, so as to ensure that the plate spring does not shake in the plate spring mounting groove 1-1.
In some embodiments, the leaf spring 3 is a curved, resilient structure.
The plate spring 3 may be made of a thin steel sheet or a hard plastic sheet having high wear resistance, and preferably, the plate spring 3 is made of steel.
In some embodiments, the wire pulling tool 9 is provided with a plate spring mounting opening 9-1 at one axial end, and the plate spring mounting opening 9-1 is connected with the plate spring 3.
One end of the plate spring 3 is contacted with the mandrel 6, the other end is arranged in a plate spring mounting opening 9-1 in the stay wire tool 9, the vibration of the stay wire tool 9 is absorbed by the elasticity of the plate spring 3, and the precision of the rifling broaching operation is improved
In some embodiments, the knife body 1 comprises chip grooves 1-4, liquid spraying holes 1-5 and felt piece mounting grooves 1-6, the knife body 1 is of a hollow pipe type structure, the chip grooves 1-4 are arranged in the stay wire knife mounting grooves 1-3, the liquid spraying holes 1-5 are arranged at the lower parts of the chip grooves 1-4, the felt piece mounting grooves 1-6 are arranged above the liquid spraying holes 1-5, felt pieces 5 are arranged in the felt piece mounting grooves 1-6, and a plurality of small holes with the hole diameters lower than that of the liquid spraying holes 1-5 are arranged on the felt pieces 5.
The chip grooves 1-4 are positioned below the stay wire cutter mounting grooves 1-3 and used for placing chips generated in broaching operation, and the chips generated in broaching easily flow into the chip grooves 1-4 under the dual action of gravity and cooling liquid to be collected, so that the chips are prevented from overflowing to influence the subsequent broaching operation effect; the liquid spraying holes 1-5 are positioned below the tool tip of the wire drawing tool 9 and are used for spraying cutting liquid from the tool body 1 to the tool tip part of the wire drawing tool 9 so as to cool the wire drawing tool, and prevent the wire drawing tool 9 from deforming due to high temperature generated in the broaching operation process and influencing subsequent broaching operation; the felt mounting grooves 1-6 are used for mounting the felt 5, a plurality of small holes with the aperture being lower than that of the liquid spraying holes 1-5 on the felt 5 can enable the felt 5 to effectively increase the liquid flow rate by applying the Bernoulli principle, prevent scrap iron generated in the cutting process from entering the interior of the broaching device to influence the motion of a broaching tool and facilitate the discharge of the scrap iron, and the inclination arrangement of the felt 5 and the liquid spraying holes 1-5 enables the cutting liquid to be sprayed to the tool tip of the stay wire tool 9.
In some embodiments, the cutter body 1 further comprises a screw mounting hole 1-2, the screw mounting hole 1-2 is located at the center position inside the plate spring mounting groove 1-1, and an adjusting screw 4 is arranged in the screw mounting hole 1-2.
The screw mounting holes 1-2 are used for mounting adjusting screws 4, the adjusting screws 4 are used for applying pretightening force to the plate springs 3 located in the plate spring mounting grooves 1-1 so as to improve stress vibration of the stay wire cutter 9 in the broaching operation process, fine adjustment of the height positions of the stay wire cutter 9 can be realized by adjusting the adjusting screws 4, the influences of ovality errors of inner holes of workpieces at different phases and ovality errors of the mandrel 6 on the depth size precision of the rifling during simultaneous broaching of a plurality of groups of rifling are eliminated, and the consistency of the processing size precision of the plurality of groups of rifling is ensured.
In some embodiments, a plug 8 is movably connected to the inner side of the tail of the cutter body 1, a through hole is formed in the plug 8, and threads are formed in the tail of the plug 8 and used for being connected with a broaching machine.
The through hole in the plug 8 is used for enabling the cutting fluid to flow into the cutter body 1; the tail thread of the plug 8 is used for connecting with a broaching machine; the plug 8 is fixed at the tail end of the cutter body 1 through threaded connection; the plug 8 can guarantee the sealing of the inner cavity of the cutter body 1, and guarantee that the cutting fluid can effectively lubricate and cool the device.
Preferably, a pin shaft 10 is arranged at the joint of the plug 8 and the broaching machine, so that the connection stability of the broaching machine and the cutter body 1 is improved, and the cutter body 1 is prevented from being reduced in machining precision due to looseness in the operation process.
In some embodiments, the cutter body 1 is provided with a front guide sleeve 2 and a rear guide sleeve 7 on the periphery.
The front guide sleeve 2 and the rear guide sleeve 7 are used for guaranteeing the guiding precision of the rifling broaching operation, the front guide sleeve 2 and the rear guide sleeve 7 are of barrel-type structures, inner holes of the front guide sleeve and the rear guide sleeve are connected through interference fit, the outer circle size of the front guide sleeve is in transition fit with the inner hole of a part to be machined, and the guiding precision of the rifling can be effectively guaranteed. The front guide sleeve 2 and the rear guide sleeve 7 are provided with vacant grooves matched with a plate spring mounting groove 1-1, a stay wire cutter mounting groove 1-3 and a chip groove 1-4 on the cutter body 1.
Preferably, the front guide sleeve 2 and the rear guide sleeve 7 may be fixed using mounting screws according to working conditions, and the front guide sleeve 2 and the rear guide sleeve 7 are further restricted to prevent rotation thereof.
In some embodiments, the knife and wire drawing tool mounting grooves 1-3 are distributed uniformly on the periphery of the knife body 1 along the circumferential direction, and the wire drawing tools 9 are mounted in the wire drawing tool mounting grooves 1-3 for improving the broaching operation efficiency.
According to the embodiment of the application, the conventional rifling broaching device can only complete the machining of one group of rifling lines by one-time broaching operation, so that the processing efficiency of the rifling lines is low.
Therefore, the utility model discloses set up multiunit cutter mounting groove 1-3 of acting as go-between along the circumference space at cutter body 1 periphery to be provided with the cutter 9 of acting as go-between in it, and utilize the axial wall thickness of leaf spring mounting groove 1-1, cutter mounting groove 1-3 of acting as go-between to guarantee that the cutter body possesses sufficient intensity, can effectively reduce the circumference wall thickness between the adjacent cutter mounting groove of acting as go-between 1-3, rationally utilize circumference space arrangement multiunit cutter mounting groove 1-3 of acting as go-between, reach the purpose of simultaneous processing multiunit rifling, solve the difficult problem that the work piece machining efficiency is low of small-bore (below 50 mm).
Taking a cutter body with the outer diameter of 40mm and the processing width of 3.4mm as an example, 4 groups of wire drawing cutters can be simultaneously arranged in the circumferential direction on the premise of ensuring enough strength, so that the installation of a plurality of groups of wire drawing cutters 9 is realized on a small structural size, and the processing efficiency is doubled in the process of the rifling.
In some embodiments, the mandrel 6 comprises three cylindrical structures 6-2 and two conical structures 6-3, the three cylindrical structures 6-2 are connected through the conical structures 6-3, and the conical structures 6-3 are tangent to the bottom of the wire drawing tool 9.
Because the utility model discloses in be equipped with multiunit broach 9, if still use broach cutter adjusting device among the prior art to adjust multiunit broach 9, broach cutter 9 is in the section of ascending slope of current broach cutter adjusting device conical surface when multiunit broach 9 reachs the cutting height of needs, and the resistance is great during the regulation, easily produces and rocks, is unfavorable for follow-up broach cutter's fine setting, influences the work efficiency of broaching operation.
The event the utility model discloses a thick in the middle of, both ends are thin, and the junction is the dabber 6 of cone structure, comes to adjust multiunit stay wire cutter 9, and stay wire cutter 9 is in the downhill path section of the 6 conical surfaces of dabber when multiunit stay wire cutter 9 reachs the cutting height that needs, and the resistance is less during the regulation, and difficult production is rocked, is favorable to follow-up broaching cutter's fine setting, improves the work efficiency of broaching operation.
In some embodiments, the mandrel 6 further comprises a square structure 6-1, a threaded hole 6-4 and a liquid spraying hole 6-5, the square structure 6-1 is arranged at one end, far away from the cone structure 6-3, of the cylindrical structure 6-2 at the front end, the threaded hole 6-4 is formed in one end, far away from the cone structure 6-3, of the cylindrical structure 6-2 at the tail end, the liquid spraying hole 6-5 is formed in the cylindrical structure 6-2 at the tail end, close to the outer wall of the cone structure 6-3, and the liquid spraying hole 6-5 and the liquid spraying hole 1-5 form a cooling liquid passage when the liquid spraying hole 6-5 works.
The three cylindrical structures 6-2 on the mandrel 6 are in transition fit with the inner hole of the cutter body 1; the cone part of the cone structure 6-3 is tangent with the bottom of the wire drawing cutter 9, and the cutting height of the wire drawing cutter 9 is adjusted by the back-and-forth movement of the cone structure 6-3. The square structure 6-1 is used for connecting other detection equipment; the threaded hole 6-4 is used for connecting with a broaching machine; the liquid jet holes 6-5 are used for jetting cooling liquid and form cooling liquid passages with the liquid jet holes 1-5, so that the cooling liquid is jetted to the wire drawing cutter 9 and a machined workpiece, the temperature of the wire drawing cutter 9 is reduced, and the wire drawing cutter 9 and the workpiece are prevented from being damaged to influence the machining effect.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example one
According to the technical scheme, the device provides a technical scheme, and the device comprises a cutter body 1, a mandrel 6 and a wire drawing cutter 9; a stay wire cutter mounting groove 1-3 is arranged at the periphery of the cutter body 1 along the circumferential space and is used for mounting a stay wire cutter 9, and a mandrel 6 for adjusting the cutting height of the stay wire cutter 9 is arranged in the cutter body 1; the periphery of the cutter body 1 is axially provided with a plate spring mounting groove 1-1 matched with the stay wire cutter mounting groove 1-3, a plate spring 3 is movably connected in the plate spring mounting groove 1-1, and the plate spring 3 is connected with a stay wire cutter 9 and used for absorbing the vibration of the stay wire cutter 9 during broaching operation.
The plate spring 3 is of a curved, resilient construction. One end of the stay wire cutter 9 along the axial direction is provided with a plate spring mounting opening 9-1, and the plate spring mounting opening 9-1 is connected with the plate spring 3. The wire drawing tool comprises a tool body 1 and a tool body 1, wherein the tool body 1 comprises a chip groove 1-4, a liquid spraying hole 1-5 and a felt mounting groove 1-6, the tool body 1 is of a hollow pipe structure, the chip groove 1-4 is arranged in a wire drawing tool mounting groove 1-3, the liquid spraying hole 1-5 is arranged at the lower part of the chip groove 1-4, the felt mounting groove 1-6 is arranged above the liquid spraying hole 1-5, a felt 5 is arranged in the felt mounting groove 1-6, and a plurality of small holes with the pore diameter lower than that of the liquid spraying hole 1-5 are formed in the felt 5. The cutter body 1 further comprises a screw mounting hole 1-2, the screw mounting hole 1-2 is located in the center of the inner portion of the plate spring mounting groove 1-1, and an adjusting screw 4 is arranged in the screw mounting hole 1-2. The inner side of the tail of the cutter body 1 is movably connected with a plug 8, a through hole is formed in the plug 8, and threads are arranged at the tail of the plug 8 and used for being connected with a broaching machine.
Before use, firstly, the stay wire cutter 9 is installed in a stay wire cutter installation groove 1-3 on the cutter body 1, then the plate spring 3 is installed in the plate spring installation groove 1-1, one end of the plate spring is connected with the stay wire cutter 9, the other end of the plate spring is contacted with the mandrel 6, then the broaching machine is respectively connected with the mandrel 6 and the plug 8, and finally, the operation can be started by utilizing the pin shaft 10 for stabilization.
When the device is used, firstly, a broaching machine controller is operated, the device is moved to a position to be machined by the broaching machine, the cutting height of the stay wire cutters 9 is adjusted by the forward and backward movement of the mandrel 6, then the heights of the cutters with different phases are respectively measured by an external micrometer, the adjustment screws 4 are used for fastening the plate springs 3 and finely adjusting the stay wire cutters 9, so that the initial cutting depths of the stay wire cutters 9 are consistent, the influence of the ovality of the inner hole of a workpiece on the broaching depth is eliminated, and finally, the broaching machine is controlled to drive the device to move in the inner hole of the workpiece, so that a plurality of rifling can be machined simultaneously.
Example two
As shown in fig. 8 to 9, since the diameter of the conventional rifling broaching device is fixed and the inside diameter of the tube body is variable, when the inside diameter of the tube body is changed, the conventional rifling broaching device cannot be adapted to the change, and the rifling broaching device can be machined only by remanufacturing the rifling broaching device of a corresponding size, which causes a waste of resources and affects a machining rate, the device provides a second technical solution based on the above-described embodiment.
The periphery of the cutter body 1 is provided with a front guide sleeve 2 and a rear guide sleeve 7.
During the use, this embodiment and the difference of above-mentioned embodiment lie in, the body internal diameter of processing as required uses preceding uide bushing 2 and back uide bushing 7 rather than the assorted to with its cover in cutter body 1 periphery, through adjusting the position around spindle 6 in cutter body 1 at last, can realize the processing of different aperture rifling in certain extent.
EXAMPLE III
As shown in fig. 1 to 5, the present device provides a third technical solution on the basis of the above-mentioned embodiments, because the prior rifling broaching device can only complete the processing of one set of rifling at a time during the broaching operation, resulting in a low rifling efficiency.
The stay wire tool mounting grooves 1-3 are distributed on the periphery of the cutter body 1 along the circumferential direction, and the stay wire tools 9 are arranged in the stay wire tool mounting grooves 1-3 and used for improving the broaching operation efficiency.
The mandrel 6 comprises three cylindrical structures 6-2 and two conical structures 6-3, the three cylindrical structures 6-2 are connected through the conical structures 6-3, and the conical structures 6-3 are tangent to the bottom of the wire drawing cutter 9.
The mandrel 6 further comprises a square structure 6-1, a threaded hole 6-4 and a liquid spraying hole 6-5, the end, far away from the cone structure 6-3, of the cylindrical structure 6-2 at the front end is provided with the square structure 6-1, the end, far away from the cone structure 6-3, of the cylindrical structure 6-2 at the tail end is internally provided with the threaded hole 6-4, the liquid spraying hole 6-5 is formed in the end, close to the outer wall of the cone structure 6-3, of the cylindrical structure 6-2 at the tail end in the circumferential direction, and the liquid spraying hole 6-5 and the liquid spraying hole 1-5 form a cooling liquid passage when the liquid spraying hole 6-5 works.
When in use, the difference between the embodiment and the above embodiment is that according to the number of rifling to be processed, a certain number of the wire drawing tools 9 are installed in the wire drawing tool installation grooves 1-3, and then the cutting height is adjusted by the mandrel 6 and the adjusting screw 4, so that a plurality of groups of rifling can be processed simultaneously.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.
Claims (10)
1. A high-precision rifling broaching device for a small-bore body tube comprises a cutter body (1), a mandrel (6) and a broaching cutter (9);
the wire drawing tool is characterized in that a wire drawing tool mounting groove (1-3) is formed in the periphery of the tool body (1) and used for mounting a wire drawing tool (9), and the mandrel (6) used for adjusting the cutting height of the wire drawing tool (9) is arranged in the tool body (1);
the wire drawing tool is characterized in that a plate spring mounting groove (1-1) matched with the wire drawing tool mounting groove (1-3) is axially formed in the periphery of the tool body (1), a plate spring (3) is movably connected in the plate spring mounting groove (1-1), and the plate spring (3) is connected with the wire drawing tool (9) and used for absorbing vibration of the wire drawing tool (9) during broaching operation.
2. A small-bore body tube high-precision rifling broaching device according to claim 1, characterized in that said plate spring (3) is of a curved elastic structure.
3. The high-precision rifling broaching device for the small-bore body pipe according to claim 2, wherein the wire drawing tool (9) is provided with a plate spring mounting opening (9-1) at one axial end, and the plate spring mounting opening (9-1) is connected with the plate spring (3).
4. The high-precision rifling broaching device for the small-bore body pipe according to claim 3, wherein the cutter body (1) comprises chip grooves (1-4), liquid spraying holes (1-5) and felt piece mounting grooves (1-6), the cutter body (1) is of a hollow pipe structure, the chip grooves (1-4) are arranged in the wire drawing cutter mounting grooves (1-3), the liquid spraying holes (1-5) are formed in the lower portions of the chip grooves (1-4), the felt piece mounting grooves (1-6) are formed above the liquid spraying holes (1-5), felt pieces (5) are arranged in the felt piece mounting grooves (1-6), and a plurality of small holes with the hole diameters lower than those of the liquid spraying holes (1-5) are formed in the felt pieces (5).
5. The small-bore body pipe high-precision rifling broaching device according to claim 4, wherein the cutter body (1) further comprises a screw mounting hole (1-2), the screw mounting hole (1-2) is positioned in the inner center of the plate spring mounting groove (1-1), and an adjusting screw (4) is arranged in the screw mounting hole (1-2).
6. The high-precision rifling broaching device for the small-bore body pipe according to claim 5, characterized in that a plug (8) is movably connected to the inner side of the tail part of the cutter body (1), a through hole is formed in the plug (8), and a thread is formed at the tail part of the plug (8) and used for being connected with a broaching machine.
7. The high-precision rifling broaching device for the small-bore body pipe according to claim 1, characterized in that a front guide sleeve (2) and a rear guide sleeve (7) are arranged on the periphery of the cutter body (1).
8. The high-precision rifling broaching device for the small-bore body pipe according to claim 4, wherein the plurality of groups of the wire drawing tool mounting grooves (1-3) are circumferentially and uniformly distributed on the periphery of the tool body (1), and the wire drawing tools (9) are mounted in the wire drawing tool mounting grooves (1-3) for improving the broaching operation efficiency.
9. The small-bore body tube high-precision rifling broaching device according to claim 8, wherein the mandrel (6) comprises three cylindrical structures (6-2) and two conical structures (6-3), the three cylindrical structures (6-2) are connected through the conical structures (6-3), and the conical structures (6-3) are tangent to the bottom of the wire drawing tool (9).
10. The high-precision rifling broaching device for the small-bore body pipe according to claim 9, wherein the mandrel (6) further comprises a square structure (6-1), a threaded hole (6-4) and a liquid injection hole (6-5), the square structure (6-1) is arranged at one end, away from the cone structure (6-3), of the cylinder structure (6-2) at the front end, the threaded hole (6-4) is arranged inside one end, away from the cone structure (6-3), of the cylinder structure (6-2) at the tail end, the liquid injection hole (6-5) is arranged at the outer wall, close to the cone structure (6-3), of the cylinder structure (6-2) at the tail end in the circumferential direction, and the liquid injection hole (6-5) and the liquid injection hole (1-5) form a cooling liquid passage when the liquid injection hole (6-5) works.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222612625.6U CN218694452U (en) | 2022-09-30 | 2022-09-30 | Small-bore body pipe high accuracy rifling broaching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222612625.6U CN218694452U (en) | 2022-09-30 | 2022-09-30 | Small-bore body pipe high accuracy rifling broaching device |
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| Publication Number | Publication Date |
|---|---|
| CN218694452U true CN218694452U (en) | 2023-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222612625.6U Active CN218694452U (en) | 2022-09-30 | 2022-09-30 | Small-bore body pipe high accuracy rifling broaching device |
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| Country | Link |
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| CN (1) | CN218694452U (en) |
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2022
- 2022-09-30 CN CN202222612625.6U patent/CN218694452U/en active Active
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