Side milling head assembly convenient to cool and numerical control machining center

Abstract

The utility model relates to the technical field of numerical control machining centers, in particular to a side milling head assembly convenient to cool and a numerical control machining center. A cooling liquid inlet pipeline is arranged on the positioning locking plate; a side milling head; the connecting pin is fixedly connected with the side milling head; the locking structure is arranged on the positioning locking plate, and the locking structure is used for switching the positioning locking plate and the connecting pin between a locking state and a loosening state; cooling liquid pipelines are arranged in the connecting pin and the side milling head, and the cooling liquid pipelines are communicated with the cooling liquid inlet pipeline; and an outlet of the cooling liquid pipeline corresponds to the cutter. Cooling liquid and cooling oil of a machining center are connected into the cooling liquid inlet pipeline, so that cooling efficiency is improved, thermal deformation of the side milling head is reduced, machining precision is improved, machining time is prolonged, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to numerical control machining center technical field especially provide a side milling head subassembly and numerical control machining center convenient to cool. BACKGROUND

[0002] Numerical control machining center is a kind of automatic machine tool equipped with program control system, and the rotating center of tool can be processed workpiece with the main shaft rotating center line angle after machine tool is mounted side milling head.Side milling head is widely used in various fields of various mechanical processing, can reduce workpiece repeated clamping, improve machining accuracy and efficiency, and is used for vertical machining center, gantry machining center, horizontal boring and milling machining center.

[0003] Side milling head can be divided into light, medium and heavy three specifications.Light side milling head is light (generally 5-15Kg), high precision, small torque, can enter tool magazine and realize automatic tool changing with positioning block.With the universal numerical control machine tool, especially the rapid growth of machining center with tool magazine, light side milling head also begins to be widely used.

[0004] However, the connection mode of light side milling head and numerical control machine tool main shaft in the prior art is limited, and the cooling of side milling head can only adopt external spraying mode, and the cooling efficiency is low. INVENTION CONTENTS

[0005] In order to solve the above problems, the utility model provides a side milling head subassembly and numerical control machining center convenient to cool to solve the problem that the cooling efficiency of side milling head in the prior art is low.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides a side milling head subassembly convenient to cool for machining center, which comprises:

[0008] Positioning locking plate, which is fixedly connected with the main shaft of the machining center, and a cooling liquid inlet pipeline is arranged on the positioning locking plate;

[0009] Side milling head;

[0010] Connecting pin, which is fixedly connected with the side milling head;

[0011] Locking structure, which is arranged on the positioning locking plate, is used for switching the positioning locking plate and the connecting pin between the locking state and the loosening state;The inside of the connecting pin and the side milling head is provided with a cooling liquid pipeline, the cooling liquid pipeline is communicated with the cooling liquid inlet pipeline, and the outlet of the cooling liquid pipeline is correspondingly arranged with a tool.

[0012] According to the side milling head assembly, the locking structure is switched between the locking state and the loosening state through pneumatic or hydraulic action, so that the connecting pin and the positioning locking plate are switched between the locking state and the loosening state.

[0013] According to the side milling head assembly convenient to cool, the side milling head comprises:

[0014] The middle support is provided with a mounting hole;

[0015] The side milling head body is connected to the bottom of the middle support, and the side milling head body is used for connecting a cutter;

[0016] The outer periphery of the connecting pin is provided with an expansion shaft sleeve, and the expansion shaft sleeve is in interference fit with the mounting hole.

[0017] According to the side milling head assembly convenient to cool, the expansion shaft sleeve has two, and the two expansion shaft sleeves are located at the top end and the bottom end of the mounting hole.

[0018] According to the side milling head assembly, the side milling head body comprises:

[0019] The lower tool shank is provided with a conical helical upper gear at the bottom end, and the lower tool shank is rotationally arranged in the middle support;

[0020] A pair of tool shafts are perpendicular to the lower tool shank, and the tool shafts are rotationally arranged in the middle support; one of the tool shafts is provided with a conical helical lower gear at the outer periphery, and the conical helical lower gear is engaged with the conical helical upper gear; the tool shafts are connected through tool shaft connecting bolts;

[0021] The first adjusting sleeve is arranged on the outer periphery of the tool shaft;

[0022] The second adjusting sleeve is arranged in the middle support; and the second adjusting sleeve is in threaded connection with the first adjusting sleeve.

[0023] According to the side milling head assembly, a first groove is formed in the top of the positioning locking plate, a second groove is arranged on the side of the positioning locking plate away from the lower tool shank, and the locking structure comprises:

[0024] The loosening pipeline is embedded in the first groove;

[0025] The locking pipeline is embedded in the second groove;

[0026] A positioning locking piston is arranged on the outer circumferential side of the connecting pin and in the second groove, the positioning locking piston is movable in a first direction perpendicular to the axis direction of the connecting pin, and the end of the positioning locking piston away from the connecting pin is in communication with the locking pipeline.

[0027] According to the side milling head assembly, the side milling head body further comprises:

[0028] A pair of cover plates are arranged on the two sides of the support, and each cover plate is provided with a cooling liquid nozzle in communication with the cooling liquid pipeline.

[0029] According to the side milling head assembly, the side milling head body further comprises:

[0030] The utility model also provides a numerical control machining center which comprises the side milling head assembly convenient to cool.

[0031] Compared with the prior art, the utility model has the following beneficial effects:

[0032] The utility model provides a side milling head assembly which has the following beneficial effects:

[0033] (1), through setting up the cooling liquid inlet pipeline on the positioning locking plate, the connecting pin and the inside of the side milling head are provided with the cooling liquid pipeline, the cooling liquid pipeline is in communication with the cooling liquid inlet pipeline, and the outlet of the cooling liquid pipeline is correspondingly arranged with the cutter, the cooling liquid and the cooling oil of the machining center are connected into the cooling liquid inlet pipeline, the cooling efficiency is improved, the thermal deformation of the side milling head is reduced, the machining precision and the machining time are improved, and the service life is prolonged.

[0034] (2), the bottom end of the lower cutter handle is provided with a conical spiral upper gear, the outer periphery of one of the cutter shafts is provided with a conical spiral lower gear, the conical spiral lower gear is engaged with the conical spiral upper gear, the first adjusting sleeve is arranged on the outer periphery of one of the cutter shafts, the second adjusting sleeve is arranged in the middle support, the second adjusting sleeve is threadedly connected with the first adjusting sleeve, when the conical spiral upper gear and the conical spiral lower gear have a gap, the cutter shaft connecting bolt can be loosened, the first adjusting sleeve is rotated, the conical spiral lower gear can be moved forward and backward, the cutter shaft connecting bolt is locked, and the gap adjustment after gear wear can be realized, so that the stable operation of the side milling head is ensured.

[0035] (3), through the positioning locking plate and the main shaft fixed connection of machining center, connecting pin and side milling head fixed connection, locking structure is arranged on the positioning locking plate, locking structure is through the pneumatic or hydraulic action, make connecting pin and positioning locking plate switch between locking state and loose state, make full use of the main shaft control pressure gas source of machining center, avoid connecting pin loose, improve the cutting torque of side milling head, improve the rigidity, increase the cutting depth.

[0036] (4), the outer periphery of the connecting pin is provided with an expansion sleeve, which adopts an expansion sleeve type connection method, effectively solving the problem of loose connecting pin.

[0037] The numerical control machining center provided by the utility model has the advantages described above because it comprises the side milling head assembly convenient for cooling described above. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only the embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative labor.

[0039] Figure 1 The utility model provides a structure diagram of side milling head assembly;

[0040] Figure 2 The utility model provides a sectional view of side milling head assembly;

[0041] In the drawing, wherein:

[0042] 1, positioning locking plate, 2, side milling head, 3, connecting pin, 4, locking structure, 5, cooling liquid inlet pipeline, 6, cooling liquid pipeline, 7, expansion sleeve, 8, cooling liquid nozzle, 9, warehouse positioning device, 21, middle support, 22, side milling head body, 221, lower tool shank, 222, conical spiral upper gear, 223, tool shaft, 224, conical spiral lower gear, 225, tool shaft connecting bolt, 226, first adjusting sleeve, 227, second adjusting sleeve, 228, cover plate, 41, loosening pipeline, 42, locking pipeline, 43, positioning locking piston. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of the present application.

[0044] As shown in Figure 1 and Figure 2 The utility model discloses an embodiment provides a side milling head assembly for machining center, including positioning locking plate 1, side milling head 2, connecting pin 3 and locking structure 4.

[0045] The positioning locking plate 1 is fixedly connected with the main shaft of the machining center, plays a role of fixed support, and ensures that the whole side milling head assembly can be stably installed on the machining center. The side milling head 2 is mainly used for side milling operation. The connecting pin 3 is fixedly connected with the side milling head 2, and the side milling head 2 is firmly installed on the positioning locking plate 1. The locking structure 4 is arranged on the positioning locking plate 1, and the locking structure 4 is used to switch the positioning locking plate 1 and the connecting pin 3 between the locked state and the released state.

[0046] The positioning locking plate 1 is provided with a cooling liquid inlet pipeline 5, so that the cooling liquid can be conveniently introduced from the outside to the inside of the side milling head assembly, and necessary cooling and lubrication are provided for the cutter. The connecting pin 3 and the inside of the side milling head 2 are provided with cooling liquid pipelines 6, the cooling liquid pipelines 6 are communicated with the cooling liquid inlet pipeline 5, and the outlets of the cooling liquid pipelines 6 are correspondingly arranged with the cutter, so that the cooling liquid can effectively act on the cutter, take away the heat generated during machining, simultaneously play a lubricating role, reduce cutter wear, and improve machining precision and efficiency. Moreover, the on-off of the cooling liquid is controlled through the cooling liquid control instruction of the machining center.

[0047] The cooling liquid can also be replaced by cooling oil as long as the cooling effect can be achieved.

[0048] Compared with the external spraying mode in the prior art, the embodiment provided by the present application has higher cooling efficiency.

[0049] In one feasible embodiment of the present application, the locking structure 4 switches the connecting pin 3 and the positioning locking plate 1 between the locked state and the released state through pneumatic or hydraulic action.

[0050] The utility model full use machining center's main shaft control pressure gas source, avoid the generation of loose connection pin, improve the cutting torque of side milling head, improve the rigidity, increase the cutting depth. When side milling head assembly is installed on machining center, it is an integral part of machining center, because the gas source of side milling head is the control gas source of machining center, thereby realizing the synchronous control of locking and loosening.

[0051] In a feasible embodiment of the utility model, the side milling head 2 includes a middle support 21 and a side milling head body 22. The middle support 21 is provided with a mounting hole for receiving and fixing the connecting pin 3. The side milling head body 22 is connected to the bottom of the middle support 21 and is used for connecting a tool. The connecting pin 3 is provided with an expansion sleeve 7. The expansion sleeve 7 is in interference fit with the mounting hole. When the expansion sleeve 7 is installed in the mounting hole, it will slightly expand due to extrusion, thereby tightly filling the mounting hole and firmly fixing the connecting pin 3, preventing the connecting pin 3 from loosening or moving during machining.

[0052] In a feasible embodiment of the utility model, the expansion sleeve 7 has two, and the two expansion sleeves 7 are located at the top end and the bottom end of the mounting hole. Through the arrangement of the double expansion sleeves 7, the fixing strength of the connecting pin 3 is improved, and the risk of loosening caused by vibration or external force is reduced.

[0053] In a feasible embodiment of the utility model, the side milling head body 22 includes a lower tool holder 221 and a pair of tool shafts 223. The lower tool holder 221 is provided with a conical helical upper gear 222 at the bottom end, and the lower tool holder 221 is rotatably arranged in the middle support 21. The pair of tool shafts 223 are perpendicular to the lower tool holder 221, and the tool shafts 223 are rotatably arranged in the middle support 21. The outer periphery of one of the tool shafts 223 is provided with a conical helical lower gear 224, which is engaged with the conical helical upper gear 222 to realize power transmission. The pair of tool shafts 223 are connected by a tool shaft connecting bolt 225. A first adjusting sleeve 226 is arranged on the outer periphery of the tool shaft 223. A second adjusting sleeve 227 is arranged in the middle support 21. The second adjusting sleeve 227 is threadedly connected with the first adjusting sleeve 226.

[0054] When the lower tool holder 221 is subjected to rotary power, the conical helical upper gear 222 will drive the conical helical lower gear 224 to rotate, thereby driving the tool shaft 223 to rotate. When the conical helical upper gear 222 and the conical helical lower gear 224 have a gap after a period of work, the tool shaft connecting bolt 225 is loosened first, the first adjusting sleeve 226 is rotated to drive the conical helical lower gear 224 to move forward and backward, and then the tool shaft connecting bolt 225 is locked, thereby realizing the gap adjustment after gear wear and ensuring the stable operation of the side milling head.

[0055] AsFigure 2 As shown in a feasible embodiment of the utility model, a first recess is formed in the top of the positioning and locking plate 1, and a second recess is formed on the side of the positioning and locking plate 1 opposite to the lower tool handle 221; the locking structure 4 comprises a loosening pipeline 41, a locking pipeline 42 and a positioning and locking piston 43, the loosening pipeline 41 is embedded in the first recess; the locking pipeline 42 is embedded in the second recess. The positioning and locking piston 43 is located on the outer side of the connecting pin 3; the positioning and locking piston 43 can move in a first direction, the first direction is perpendicular to the axis direction of the connecting pin 3; one end of the positioning and locking piston 43 away from the connecting pin 3 is in communication with the locking pipeline 42.

[0056] In the above embodiment, when the coupling main shaft tool breaking cylinder loosening gas enters the loosening pipeline 41, the positioning and locking piston 43 retreats, the connecting pin 3 is loosened, and the side milling head assembly is in a loosened state.

[0057] When the coupling main shaft tool breaking cylinder locking gas applies force to the positioning and locking piston 43 through the locking pipeline, the positioning and locking piston 43 advances, the connecting pin 3 is locked, and the side milling head is in a locked state.

[0058] It should be noted that one connecting pin 3 can correspond to one positioning and locking piston 43, when the positioning and locking piston 43 is close to the connecting pin 3, the connecting pin 3 is locked, and the side milling head is in a locked state; when the positioning and locking piston 43 is away from the connecting pin 3, the connecting pin 3 is loosened, and the side milling head is in a loosened state.

[0059] In a feasible embodiment of the utility model, the side milling head body 22 further comprises a pair of cover plates 228, the cover plates 228 are arranged on the two sides of the middle support 21; and each cover plate 228 is provided with a cooling liquid nozzle 8, the cooling liquid nozzle 8 is in communication with the cooling liquid pipeline 6. The cooling liquid nozzle 8 is used for directly spraying cooling liquid to the tool or the machining area, so as to cool and lubricate.

[0060] In a feasible embodiment of the utility model, the utility model further comprises a warehouse entry positioning device 9, the warehouse entry positioning device 9 is arranged on the positioning and locking plate 1, when the positioning and locking plate 1 needs to be installed on the machining center, accurate alignment and fixation can be ensured.

[0061] The second aspect embodiment of the utility model provides a numerical control machining center, comprising the side milling head assembly convenient to cool as any one of the above embodiments.

[0062] The numerical control machining center provided by the second aspect embodiment of the utility model has various advantages as described above, because the numerical control machining center comprises the side milling head assembly convenient to cool as described above.

[0063] The various embodiments described in this specification are presented by way of example, and each embodiment is presented for the purpose of conveying the novelty and inventive aspects of the present patent application. Each embodiment is presented in a progressive and explanatory manner, and each embodiment highlights differences from other embodiments. The same or similar parts and / or functions between embodiments are to be understood as mutual references among the embodiments.

[0064] The above description of disclosed embodiments is intended to be illustrative and not restrictive. Many modifications of these embodiments by one having ordinary skill in the art are intended to be within the scope of the following claims. Thus, the present patent application is not to be limited to the embodiments described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A side mill head assembly for ease of cooling for a machining center, characterized by, The utility model relates to a kind of machining center locking structure, including: Positioning locking plate (1) is fixedly connected with the main shaft of the machining center;Cooling liquid inlet pipe (5) is provided on the positioning locking plate (1), Side milling head (2); Connecting pin (3) is fixedly connected with the side milling head (2); Locking structure (4) is provided on the positioning locking plate (1), and the locking structure (4) is used for the positioning locking plate (1) and the connecting pin (3) between locking state and loosening state Switching; The connecting pin (3) and the inside of the side milling head (2) are provided with cooling liquid pipeline (6), the cooling liquid pipeline (6) is communicated with the cooling liquid inlet pipe (5);And the outlet of the cooling liquid pipeline (6) is correspondingly provided with tool.

2. The easily cooled side mill head assembly of claim 1, wherein, The locking structure (4) is switched between the locking state and the loosening state of the connecting pin (3) and the positioning locking plate (1) by pneumatic or hydraulic action.

3. The conveniently cooled side mill head assembly of claim 2, wherein, The side milling head (2) includes: Middle support (21) is provided with mounting hole; Side milling head body (22) is connected to the bottom of the middle support (21);And the side milling head body (22) is used for connecting tool; The outer periphery of the connecting pin (3) is provided with expansion sleeve (7), and the expansion sleeve (7) is interference fit with the mounting hole.

4. The conveniently cooled side mill head assembly of claim 3, wherein, The expansion sleeve (7) has two, and the two expansion sleeves (7) are located at the top end and the bottom end of the mounting hole respectively.

5. The conveniently cooled side mill head assembly of claim 3, wherein, The side milling head body (22) includes: Lower tool shank (221) is provided with conical helical upper gear (222) at bottom end, and the lower tool shank (221) is rotatably arranged in the inside of the middle support (21); A pair of tool shafts (223) are perpendicular to the lower tool shank (221), and the tool shafts (223) are rotatably arranged in the inside of the middle support (21);One of the tool shafts (223) is provided with conical helical lower gear (224) on the outer periphery, and the conical helical lower gear (224) is engaged with the conical helical upper gear (222);A pair of tool shafts (223) are connected by tool shaft connecting bolt (225); First adjusting sleeve (226) is arranged on the outer periphery of the tool shaft (223); Second adjusting sleeve (227) is arranged in the inside of the middle support (21);The second adjusting sleeve (227) is threadedly connected with the first adjusting sleeve (226).

6. The conveniently cooled side mill head assembly of claim 5, wherein, The top of the positioning locking plate (1) is provided with first groove, and the side of the positioning locking plate away from the lower tool shank (221) is provided with second groove;The locking structure (4) includes: Loosening pipe (41) is embedded in the first groove; Locking pipe (42) is embedded in the second groove; Positioning locking piston (43) is located on the outer periphery side of the connecting pin (3) and is arranged in the second groove;The positioning locking piston (43) can move along the first direction, and the first direction is perpendicular to the axis direction of the connecting pin (3);And the end of the positioning locking piston (43) away from the connecting pin (3) is communicated with the locking pipe (42).

7. The conveniently cooled side mill head assembly of claim 6, wherein, The side milling head body (22) further includes: A pair of cover plates (228) are arranged on both sides of the middle support (21), and each cover plate (228) is provided with a cooling liquid nozzle (8) in communication with the cooling liquid pipeline (6).

8. The easily cooled side mill head assembly of any of claims 1-7, wherein, The warehouse positioning device (9) is arranged on the positioning and locking plate (1).

9. A numerically controlled machining center, characterized by The side milling head assembly is facilitated to be cooled.

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