Internal expansion turning clamp device for achieving lathe function of machining center

Abstract

The utility model discloses an internal expansion turning clamp device for achieving the lathe function of a machining center. Comprising an oil cylinder driving mechanism, a pull rod loosening mechanism, a tool apron mechanism and an internal expansion turning product tool. The oil cylinder driving mechanism is installed at the top of the pull rod loosening mechanism and used for pressing the pull rod loosening mechanism downwards, the bottom end of the pull rod loosening mechanism is provided with the internal expansion turning product tool, a product is internally expanded, supported and fixed by the internal expansion turning product tool, the tool apron mechanism is located below the internal expansion turning product tool, cutters are arranged in the tool apron mechanism, and the cutters face the lower portion and the side of the product respectively. The utility model designs the device for realizing the turning function of the machining center, so that the efficiency can be improved, and the cost can also be saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of machining center machine tool realizes part turning machining, especially designs a kind of machining center realizes lathe function inner expansion lathe fixture device. BACKGROUND

[0002] In daily product manufacturing, especially hole system class zero price, everyone is used to select machining center equipment to process, and the main reason is that machining center can take many various cutters, and one equipment can realize the processing combination of many processes, to reduce cost, improve product quality and performance.

[0003] However, due to the changeable market, if a batch of such as hub, disc shaft class zero price is needed, if traditional machining center process is still used, it is not as good as lathe in economy and efficiency, if new equipment is purchased, it is not cost-effective, in addition, the mechanism can realize automatic feeding and discharging after slight program optimization. UTILITY MODEL CONTENT

[0004] In order to solve the problems in the background art, the technical problem to be solved by the utility model is to provide machining center turning machining technology, and a machining center turning lathe function inner expansion lathe fixture device is provided.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme:

[0006] The utility model discloses a cylinder driving mechanism, loose pull rod mechanism, tool holder mechanism and inner expansion lathe product tooling, cylinder driving mechanism is installed at the top of loose pull rod mechanism for pressing down loose pull rod mechanism, and the bottom end of loose pull rod mechanism is provided with inner expansion lathe product tooling, and the product is supported and fixed by inner expansion lathe product tooling, and the tool holder mechanism is located below inner expansion lathe product tooling, and the tool holder mechanism is provided with cutters, and the cutters are respectively directed to the lower side and the side of the product.

[0007] The oil cylinder driving mechanism includes hydraulic cylinder support, oil cylinder body, piston and piston rod, the hydraulic cylinder support is fixed on the loose pull rod mechanism, the oil cylinder body is installed on the hydraulic cylinder support, the oil cylinder body is provided with the piston and the piston rod in the cylinder body, the piston and the piston rod are fixedly connected at the upper end, the piston is movably sleeved in the oil cylinder body and is separated by the inner wall sealing ring to form two cavities, the lower end of the piston rod is sealingly movably arranged through the top cover of the hydraulic cylinder support and extends into the middle of the hydraulic cylinder support, and the lower end of the piston rod is fixedly sleeved with a pressure head, and the pressure head is used to press the upper end of the loose pull rod mechanism.

[0008] The piston divides the oil cylinder body into two cavities, the upper cavity is provided with an upper oil inlet pipe for oil inlet and oil return, and the lower cavity is provided with a lower oil inlet pipe for oil inlet and oil return.

[0009] The loose pull rod mechanism comprises a main shaft body, a machining center main shaft, a loose pull rod, a butterfly spring, a loose pull rod pressing cap, a synchronous pulley and a main shaft motor; the machining center main shaft is movably sleeved in the main shaft body, and the upper end of the machining center main shaft is drivingly connected with the output shaft of the main shaft motor through the synchronous pulley; the machining center main shaft is provided with a stepped center through hole with a large upper end and a small lower end, the stepped center through hole is sleeved with the loose pull rod, and the upper end of the loose pull rod is fixedly connected with the loose pull rod pressing cap after extending out of the stepped center through hole of the machining center main shaft; the butterfly spring is sleeved on the middle part of the loose pull rod below the loose pull rod pressing cap, and the upper and lower ends of the butterfly spring are elastically connected to the lower end surface of the loose pull rod pressing cap and the middle step of the stepped center through hole of the machining center main shaft respectively through the gaskets.

[0010] The tool holder mechanism comprises a workbench, a first tool holder, a first tool, a second tool holder and a second tool; the workbench is located below the inner expanding vehicle product tooling, the first tool is installed on the workbench through the first tool holder and located below the inner expanding vehicle product tooling and the product, and the second tool is installed on the workbench through the second tool holder and located below the inner expanding vehicle product tooling and the product.

[0011] The inner expanding vehicle product tooling comprises a taper handle flange plate, a square key, an expanding block, an adjusting locking bolt, an excess flange plate, an expanding sleeve and a height adjusting ring; the taper handle flange plate is fixed to the bottom end of the machining center main shaft through bolts and the square key, the excess flange plate is fixed to the bottom end surface of the taper handle flange plate, the expanding sleeve is fixed to the bottom end surface of the excess flange plate, and the height adjusting ring is fixed to the bottom end surface of the expanding sleeve and used for pressing the expanding sleeve product height adjustingly to the bottom end surface of the excess flange plate; the inner ring of the expanding sleeve is provided with a downward protruding annular boss, the annular boss extends into the inner ring of the product, the annular boss of the expanding sleeve is provided with a plurality of circumferentially spaced radial grooves penetrating the side wall, and the radial grooves are filled with soft silica gel, as shown in Figure 5 The expanding block is adjustably fixed to the bottom end surface of the loose pull rod of the loose pull rod mechanism through the adjusting locking bolt, and the expanding block is located in the annular boss of the expanding sleeve; the outer peripheral surface of the expanding block is a tapered surface, and the tapered surface of the expanding block is used for radially extruding the soft silica gel in the radial grooves to the inner peripheral surface of the inner ring of the product, so that the inner expanding support is realized.

[0012] When the expanding block is adjusted to be upwardly fastened relative to the bottom end surface of the loose pull rod through the adjusting locking bolt, the soft silica gel in the radial grooves is pressed to the inner ring of the product by the annular boss of the expanding sleeve through the upward movement of the tapered surface of the expanding block, so that the support is strengthened.

[0013] The beneficial effects of the utility model are:

[0014] The device for realizing the turning function of the machining center is designed, the use range of the machining center is expanded, the machining is more flexible, the machining cost is saved, the machining mode is changed from milling to turning, the turning path is shortened, the efficiency is improved, and the automatic feeding and discharging of the main shaft is easily realized in this mode. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the main sectional view of the structure of the utility model;

[0016] Figure 2 is the main sectional view of the oil cylinder driving mechanism of the utility model;

[0017] Figure 3 is the main sectional view of the loose pull rod mechanism of the utility model;

[0018] Figure 4 is the main sectional view of the tool holder mechanism and the inner expansion vehicle product tooling of the utility model;

[0019] Figure 5 is the side sectional view of the structure of the utility model;

[0020] Figure 6 is the tool path schematic diagram.

[0021] In the drawings:

[0022] Oil cylinder driving mechanism 1: hydraulic cylinder support 11, oil cylinder body 12, piston 13, piston rod 14, upper oil inlet pipe 15, lower oil inlet pipe 16, pressure head 17;

[0023] Loose pull rod mechanism 2: main shaft body 21, machining center main shaft 22, loose pull rod 23, butterfly spring 24, loose pull rod pressing cap 25, synchronous pulley 26, main shaft motor 27;

[0024] Tool holder mechanism 3: workbench 31, first tool holder 32, first tool 33, second tool holder 34, second tool 35;

[0025] Inner expansion vehicle product tooling 4: taper handle flange plate 41, square key 42, expansion block 43, adjusting locking bolt 44, excessive flange plate 45, expansion sleeve 46, height adjusting ring 47, soft silica gel 48;

[0026] Product 5. DETAILED DESCRIPTION

[0027] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0028] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is merely illustrative, and by no means constitutes any limitation to the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0029] As shown in Figure 1 and Figure 5 , the device comprises an oil cylinder driving mechanism 1 for realizing product loading and unloading, an adjustable loose pull rod mechanism 2, a tool holder mechanism 3 for product processing, and an inner expansion vehicle product tooling 4 for positioning and centering function; the oil cylinder driving mechanism 1 is installed at the top of the loose pull rod mechanism 2 for pressing down the machining center spindle 22 of the loose pull rod mechanism 2, the inner expansion vehicle product tooling 4 is installed at the bottom of the loose pull rod mechanism 2, the product 5 is supported and fixed by the inner expansion vehicle product tooling 4, the inner expansion vehicle product tooling 4 is installed in the inner circle of the product 5, the tool holder mechanism 3 is located below the inner expansion vehicle product tooling 4, and the tool holder mechanism 3 is provided with a tool, and the tool is respectively directed to the lower side and the side of the product 5.

[0030] The device of the present application changes the machining center from tool rotation and product movement machining mode to product rotation and tool movement machining mode. In addition, this mode is convenient for realizing automatic product feeding and discharging, realizing full automation, and unmanned machining.

[0031] The product 5 to which the present application is applied is a disc (ring) type part, such as a brake disc, a hub, etc.

[0032] As shown in Figure 2 , the oil cylinder driving mechanism 1 comprises a hydraulic cylinder bracket 11, an oil cylinder body 12, a piston 13 and a piston rod 14; the hydraulic cylinder bracket 11 is fixed on the spindle body 21 of the loose pull rod mechanism 2 by bolts, the oil cylinder body 12 is installed on the top surface of the hydraulic cylinder bracket 11, the oil cylinder body 12 is provided with the piston 13 and the piston rod 14 in the cylinder body, the upper end of the piston 13 and the piston rod 14 is fixedly connected, and a sealing ring is arranged at the connecting surface between the upper ends of the piston 13 and the piston rod 14, the piston 13 is movably sleeved in the cylinder body of the oil cylinder body 12 and is sealingly connected with the inner wall of the cylinder body through the sealing ring, the lower end of the piston rod 14 is sealingly movably arranged through the top cover of the hydraulic cylinder bracket 11 and extends into the hydraulic cylinder bracket 11, the lower end of the piston rod 14 is fixedly sleeved with a pressure head 17, and the pressure head 17 is used for pressing the upper end of the loose pull rod 23 of the loose pull rod mechanism 2.

[0033] The piston rod pressure head 17 of the oil cylinder driving mechanism for realizing product loading and unloading can be replaced and adjusted according to actual requirements, which improves the efficiency and is convenient to replace.

[0034] The piston 13 divides the oil cylinder body 12 into upper and lower cavities. The upper cavity is provided with an upper oil inlet pipe 15 for oil inlet and return at the top cover of the oil cylinder body 12, and the lower cavity is provided with a lower oil inlet pipe 16 for oil inlet and return at the side wall of the oil cylinder body 12.

[0035] When the upper oil inlet pipe 15 is oil inlet and the lower oil inlet pipe 16 is oil return, the piston 13 and the piston rod 14 move downward as a whole, thereby driving the pressure head 17 to press on the loose rod pressure cap 25 of the loose rod mechanism 2 and to the loose rod 23.

[0036] When the upper oil inlet pipe 15 is oil return and the lower oil inlet pipe 16 is oil inlet, the piston 13 and the piston rod 14 move upward as a whole, thereby driving the pressure head 17 to move away from the loose rod pressure cap 25 of the loose rod mechanism 2 and the loose rod 23.

[0037] As shown in the drawings, the loose rod mechanism 2 comprises a main shaft body 21, a machining center main shaft 22, a loose rod 23, a butterfly spring 24, a loose rod pressure cap 25, a synchronous pulley 26, and a main shaft motor 27. Figure 3 The main shaft body 21 remains fixed, and the machining center main shaft 22 is movably sleeved in the main shaft body 21, and the upper end of the machining center main shaft 22 is drivingly connected to the output shaft of the main shaft motor 27 through the synchronous pulley 26.

[0038] As shown in the drawings, the machining center main shaft 22 and the inner expansion vehicle product tooling 4 fixedly connected to the lower end of the machining center main shaft 22 are rotated together by the main shaft motor 27 through the synchronous pulley 26, that is, the inner expansion vehicle product tooling 4 and the product 5 are driven to rotate at high speed. At the same time, the diameter of the relevant structure of the synchronous pulley 26 is larger than the hole diameter of the machining center main shaft 22 passing through the main shaft body 21. Figure 5 The machining center main shaft 22 is provided with a stepped center through hole with large upper end and small lower end, and the loose rod 23 is synchronously sleeved in the stepped center through hole. The upper end of the loose rod 23 extends out of the stepped center through hole of the machining center main shaft 22 and is threadedly connected to the loose rod pressure cap 25, and the loose rod pressure cap is screwed onto the threads on the upper end of the loose rod.

[0039] The middle part of the loose rod 23 below the loose rod pressure cap 25 is externally sleeved with the butterfly spring 24, and the upper and lower ends of the butterfly spring 24 are respectively elastically connected to the lower end surface of the loose rod pressure cap 25 and the middle step between the large upper end and the small lower end of the stepped center through hole of the machining center main shaft 22 through the gaskets.

[0040] Specifically, the stepped center through hole of the machining center main shaft 22 is provided with a middle step between the large upper end and the small lower end, and the middle step of the machining center main shaft 22 is provided with a gasket, and the lower end surface of the loose rod pressure cap 25 is provided with a gasket.

[0041]

[0042] ​In the loose pull rod mechanism 2, the loose pull rod pressure cap 25 is pressed down by the pressure head 17 of the oil cylinder driving mechanism 1, and then pushes the machining center spindle 22 and the loose pull rod 23 machining center spindle 22 together to move downward, and further drives the inner expansion vehicle product tooling 4 and the product 5 to move downward.

[0043] In the specific implementation, the butterfly spring 24 is composed of multiple butterfly spring layers stacked together, and the adjustment of the clamping force can be adjusted according to the number of disc springs. The loose pull rod mechanism can adjust the tightening of the butterfly spring according to the turning force, and adjust the pre-tightening of the butterfly spring, the tightening distance.

[0044] As shown in Figure 4 , the tool holder mechanism 3 includes a workbench 31, a first tool holder 32, a first tool 33, a second tool holder 34, and a second tool 35; the workbench 31 is located below the inner expansion vehicle product tooling 4, the first tool 33 is installed on the workbench 31 through the first tool holder 32 and is located below the inner expansion vehicle product tooling 4 and the product 5, and the second tool 35 is installed on the workbench 31 through the second tool holder 34 and is located on the horizontal side of the inner expansion vehicle product tooling 4 and the product 5.

[0045] The first tool 33 and the tool 35 are used for cutting machining of the relevant parts of the product 5 when the product 5 is driven to rotate at high speed, and if necessary, additional tools can be added to facilitate rough and fine machining.

[0046] In the specific implementation, the first tool holder 32 and the second tool holder 34 are installed in the T-shaped groove of the workbench 31 through bolts and sliding blocks, and can be horizontally moved and adjusted and fixed in position, which is convenient and simple to adjust and replace. In this way, the tools can be fixed on the workbench, and maintenance and replacement are convenient; and it is convenient to make complex tools to realize double-tool machining.

[0047] The inner expansion vehicle product tooling 4 clamps the product by using the principle of expanding the outer sleeve with taper fitting, and uses the short taper handle to center to facilitate centering, and does not need to be adjusted during use, which is convenient and fast. The inner expansion vehicle product tooling 4 is positioned by taper at the same time, and also performs plane positioning, and uses square keys to transmit torque.

[0048] As shown in Figure 4 , the inner expansion vehicle product tooling 4 includes a taper handle flange plate 41, a square key 42, a tensioning block 43, an adjustment locking bolt 44, an excess flange plate 45, a tensioning sleeve 46, and a height adjustment ring 47.

[0049] The taper handle flange plate 41 is fixed to the bottom end of the machining center spindle 22 of the loose pull rod mechanism 2 through bolts and the square key 42, the excess flange plate 45 is fixed to the bottom end face of the taper handle flange plate 41 through bolts, the tensioning sleeve 46 is fixed to the bottom end face of the excess flange plate 45 through bolts, and the height adjustment ring 47 is fixed to the bottom end face of the tensioning sleeve 46 through bolts to press the tensioning sleeve 46 tightly to the bottom end face of the excess flange plate 45.

[0050] The inner ring of the tensioning sleeve 46 is provided with a conical hole, and the outer ring is a downwardly protruding circular column which extends into the inner ring of the product 5. The circular column of the tensioning sleeve 46 is provided with a plurality of circumferentially distributed radial grooves which penetrate the side wall, and the radial grooves are filled with soft silica gel 48, as shown. Figure 5 The tensioning block 43 is adjustably fixed to the bottom end face of the tensioning block 43 of the tensioning rod 23 of the tensioning rod mechanism 2 through the adjusting locking bolt 44, and the tensioning block 43 is located in the conical inner cavity of the tensioning sleeve 46.

[0051] The outer circumferential surface of the tensioning block 43 is a conical surface, and the conical surface of the tensioning block 43 interacts with the conical surface of the tensioning sleeve, so that the tensioning sleeve is radially expanded and pressed onto the inner circumferential surface of the inner ring of the product 5, thereby realizing inner tension support.

[0052] When the distance between the tensioning block 43 and the bottom end face of the tensioning rod 23 is adjusted through the adjusting locking bolt 44, the distance between the conical surface of the tensioning block 43 and the tensioning sleeve can be adjusted, and the diameter direction change of the tensioning sleeve can be adjusted, so that the clamping force can be slightly adjusted.

[0053] When the distance between the tensioning block 43 and the bottom end face of the tensioning rod 23 is adjusted through the adjusting locking bolt 44, the distance between the conical surface of the tensioning block 43 and the tensioning sleeve can be adjusted, and the diameter direction change of the tensioning sleeve can be adjusted, so that the clamping force can be slightly adjusted.

[0054] The utility model discloses an inner tension vehicle product tooling 4 is provided with excessive flange plate 45, like this can adapt to more product tooling, and the protection of taper handle flange plate is carried out, uses safety, reduces abrasion. Still be provided with internal tensioning block 43 can adjust and lock, can not adjust the disc spring case to the slight adjustment of clamping force, and can make replacement. The height adjustment ring 47 that setting and product contact can be replaced, adapts to a variety of products, and the product replacement is convenient.

[0055] The inner tension vehicle product tooling 4 has the functions of positioning and centering, and comprises a taper handle flange plate 41, a square key 42 and a tensioning sleeve 46.

[0056] The taper handle flange plate 41 is mainly matched with the taper hole of the main shaft of the machining center, and plays the role of automatic centering.

[0057] The square key 42 is located between the main shaft 22 of the machining center and the taper handle flange plate 41, and mainly plays the role of torque transmission, i.e. the force of the main shaft motor 27 is transmitted to the taper handle flange plate 41 through the square key 42.

[0058] Excess flange 45, its main role is installed between the flange 41 and the tensioner 46, so that the installation of different products need to be tensioned and tooling, it uses the taper flange 41 taper centering effect and its own taper centering effect to protect the subsequent matching other parts of the centering, in addition, because it generally does not need to be replaced, can play a role in protecting the taper flange 41.

[0059] Tensioner 46, tensioner 43, the two components of the inner core shaft, its main role is to use the tension to hold the product, to ensure that the product does not move during processing, the size of the tension needs to be adjusted according to the size of the product processing cutting force and product clamping deformation requirements. The size of the tension is adjusted by the number of butterfly springs 24, which is designed according to 100 butterfly springs as the standard. If the product is deformed, the number of butterfly springs 24 needs to be reduced, and the number or thickness of the gasket arranged above and below the butterfly spring 24 needs to be increased.

[0060] Height adjustment ring 47 is a round ring that can be ground. Its main role is to adjust the axial positioning of the product to be processed. According to the product requirements, the length of the inner core shaft in the product positioning hole is adjusted to ensure the product clamping force and no deformation. In the case of sufficient clamping force, more space is left on the product surface and the tensioner 46 or the excess flange surface to facilitate the entry and exit of the tool during the machining of the product surface. In addition, since the tensioner 46 is difficult to manufacture and requires high-quality materials, the height adjustment ring also protects the tensioner surface and facilitates the adjustment and replacement of the product during replacement.

[0061] Adjusting locking bolt 44, its main role is to lock the tensioner 43 when the tensioner 43 needs to be adjusted up or down to prevent the tensioner 43 and the tension rod 23 from loosening and affecting the tensioning force.

[0062] In the tension rod mechanism:

[0063] Tension rod 23 is actually a smooth rod with threads at both ends inserted into the center of the spindle core shaft, which facilitates disassembly and replacement. Its main role is to connect the tensioner 43 and tighten the tensioner,

[0064] The butterfly spring 24 is provided with a flat gasket at the upper and lower ends. The flat gasket is a wear-resistant round gasket that mainly eliminates the influence of the outer corner of the bottom of the spindle inner hole and protects the bottom flat surface of the spindle inner hole. The butterfly spring 24 provides power to the inner core shaft, effectively clamping the product. By adjusting the number of butterfly springs, the total tension of the product can be adjusted. By adjusting the number of face-to-face and back-to-back butterfly springs, the compression amount can be adjusted, thereby effectively adjusting the up and down movement distance of the tension rod 23.

[0065] Loosen the rod cap 25, it is a long hexagonal nut, screwed to the end of the loose rod threaded, compression adjustment washer, so that the butterfly spring 24 has a initial pre-pressing force, to ensure that each piece of butterfly spring contact, when there is no product, spindle rotation will not up and down and abnormal noise.

[0066] In the oil cylinder drive mechanism:

[0067] It is an oil cylinder with two supports.

[0068] Hydraulic cylinder bracket 11, its role is to support the hydraulic cylinder above, using M10 bolts are fixed to the bracket on the machine tool spindle housing. Plus piston 13 and piston rod 14 constitute loose cylinder assembly.

[0069] Piston rod 14 inserted into the hole of the piston 13, through the round nut will be locked, the pressure head 17 is used to push the loose rod cap 25. To ensure the piston and piston rod connection reliable, but also to prevent the hydraulic oil will flow through the gap between the piston and piston rod, the piston and the pressure head sealing ring is added.

[0070] The upper oil pipe 15 and the lower oil pipe 16 is to enter the hydraulic oil into the upper and lower two chambers of the oil cylinder and return oil, so as to realize the hydraulic oil to push the piston can move back and forth.

[0071] The working principle of the utility model process is as follows:

[0072] A, when need to clamp the product 5, through the button control hydraulic oil into the upper oil pipe 15, into the hydraulic oil cylinder piston 13 upper cavity, push the piston 13 down, thus driving the piston rod 14 down, the pressure head 17 installed at the front end of the piston rod will be pressed to the loose rod cap 25 on the upper part of the loose rod 23.

[0073] When the cap 21 and the loose rod 23 together down, the cap 21 will be pressed to the adjustment washer, the washer will be pressed to the butterfly spring 24, the butterfly spring compression deformation, at the same time, when the loose rod 23 down will take the tensioner 43 down, so as to make the tensioner 46 relax, so the product can be easily put into the inner tension core shaft.

[0074] When the hydraulic oil enters the lower oil pipe 16 of the hydraulic oil cylinder, the lower cavity of the piston 13, pushes the piston 13 up, thus driving the piston rod 14 up, so that the pressure head 17 installed at the front end of the piston rod will be separated from the loose rod cap 25, when there is no pressure head pressure, the elastic force of the butterfly spring 24 pushes the adjustment washer to move upward, thus pushing the loose rod cap 25 to move upward, so that the loose rod 23 is also moved upward, the loose rod drives the tensioner 43 to move upward, so that the tensioner 46 is expanded, thereby clamping the product.

[0075] B. When the spindle motor 27 in the figure rotates, since a synchronous pulley is installed on the motor rotor shaft, the synchronous pulley is connected to the synchronous pulley 26 on the spindle through a synchronous belt, so that the power will be transmitted to the spindle synchronous pulley 26 through the belt. The spindle synchronous pulley 26 is installed on the upper end of the spindle through a synchronous pulley nut, and the power is transmitted to the spindle through the square key.

[0076] When the main shaft rotates, the main shaft torque will transmit the force to the tapered shank flange 41 through the two square keys 42. Since the transition flange 45 is fixed to the tapered shank flange 41 with hexagon socket bolts, the power is transmitted to the transition flange 45 through the fixing bolts. Similarly, since the transition flange 45 and the tensioning sleeve 46 are also fixed with bolts, the torque will be transmitted to the inner expansion core shaft composed of the tensioning sleeve 46 and the tensioning block 43, and then to the clamped product, causing the product to rotate.

[0077] C. Processing process, such as Figure 6 As shown in the figure, once the product is clamped, the Z-axis motor drives the Z-axis screw, which, through the Z-axis screw nut, drives the spindle head (also called the spindle box) to move the product up and down. When it reaches a certain position, the worktable controlled by the X and Y axes moves, driving the tool on the worktable to perform cutting. When cutting is complete, the X and Y axes control the worktable to return to its fixed position, and the spindle head returns to its fixed position for product loading and unloading.

[0078] In this implementation, the tool processing path is as follows Figure 6 There is no specific order in the specific implementation, which needs to be determined by specific analysis.

[0079] In addition to the above preferred embodiments, the present invention has other implementation methods. Those skilled in the art can make various changes and modifications based on the present invention. As long as they do not depart from the spirit of the present invention, they should all fall within the scope defined in the claims of the present invention.

Claims

1. A device for expanding a lathe fixture in a machining center to achieve lathe functions, characterized by: The oil cylinder driving mechanism (1) is installed on the top of the loose pull rod mechanism (2) and used for pressing down the loose pull rod mechanism (2), the bottom end of the loose pull rod mechanism (2) is provided with the inner expansion vehicle product tooling (4), the product (5) is supported and fixed by the inner expansion vehicle product tooling (4), the cutter seat mechanism (3) is located below the inner expansion vehicle product tooling (4), the cutter seat mechanism (3) is internally provided with a cutter, and the cutter respectively faces the lower side and the side of the product (5).

2. A device for expanding a chuck in a machining center to realize lathe functions according to claim 1, characterized in that: The oil cylinder driving mechanism (1) comprises a hydraulic cylinder support (11), an oil cylinder body (12), a piston (13) and a piston rod (14); the hydraulic cylinder support (11) is fixed on the loose pull rod mechanism (2), the oil cylinder body (12) is installed on the upper surface of the hydraulic cylinder support (11), the oil cylinder body (12) is internally provided with the piston (13) and the piston rod (14), the upper end of the piston (13) and the piston rod (14) is fixedly connected, the piston (13) is movably sleeved in the oil cylinder body (12) and is separated into two cavities by a sealing ring on the inner wall of the cylinder body, the lower end of the piston rod (14) is sealingly movably arranged through the top cover of the hydraulic cylinder support (11) and extends into the middle of the hydraulic cylinder support (11), the lower end of the piston rod (14) is fixedly sleeved with a pressure head (17), and the pressure head (17) is used for pressing the upper end of the loose pull rod mechanism (2).

3. The device according to claim 1, wherein: The loose pull rod mechanism (2) comprises a main shaft body (21), a machining center main shaft (22), a loose pull rod (23), a butterfly spring (24), a loose pull rod pressing cap (25), a synchronous pulley (26) and a main shaft motor (27); the machining center main shaft (22) is movably sleeved in the main shaft body (21), the upper end of the machining center main shaft (22) is externally connected with the output shaft of the synchronous pulley (26) and the main shaft motor (27) through transmission; the machining center main shaft (22) is provided with a stepped center through hole with a large upper end and a small lower end, the stepped center through hole is sleeved with the loose pull rod (23), the upper end of the loose pull rod (23) extends out of the stepped center through hole of the machining center main shaft (22) and is fixedly connected with the loose pull rod pressing cap (25); the middle part of the loose pull rod (23) below the loose pull rod pressing cap (25) is externally sleeved with the butterfly spring (24), and the upper end and the lower end of the butterfly spring (24) are elastically connected to the lower end surface of the loose pull rod pressing cap (25) and the middle step of the stepped center through hole of the machining center main shaft (22) through gaskets respectively.

4. The device according to claim 1, wherein: The cutter seat mechanism (3) comprises a workbench (31), a first cutter seat (32), a first cutter (33), a second cutter seat (34) and a second cutter (35); the workbench (31) is located below the inner expansion vehicle product tooling (4), the first cutter (33) is installed on the workbench (31) through the first cutter seat (32) and located below the inner expansion vehicle product tooling (4) and the product (5), and the second cutter (35) is installed on the workbench (31) through the second cutter seat (34) and located below the inner expansion vehicle product tooling (4) and the product (5).

5. The device according to claim 1, wherein: The inner expansion product tooling (4) includes a taper handle flange (41), a square key (42), an expansion block (43), an adjusting locking bolt (44), an excess flange (45), an expansion sleeve (46), and a height adjusting ring (47); the taper handle flange (41) is fixed to the bottom end of the main shaft of the machining center through the bolt and the square key (42), the excess flange (45) is fixed to the bottom end surface of the taper handle flange (41), the expansion sleeve (46) is fixed to the bottom end surface of the excess flange (45), and the height adjusting ring (47) is fixed to the bottom end surface of the expansion sleeve (46) for height adjustment of the expansion sleeve (46); the inner ring of the expansion sleeve (46) is provided with a downwardly protruding annular boss, the annular boss extends into the inner ring of the product (5), the annular boss of the expansion sleeve (46) is provided with a plurality of circumferentially spaced radial slots penetrating the side wall, and soft silicone (48) is filled in the radial slots; the expansion block (43) is adjustably fixed to the bottom end surface of the loose pull rod (23) of the loose pull rod mechanism (2) through the adjusting locking bolt (44), and the expansion block (43) is located in the annular boss of the expansion sleeve (46); the outer peripheral surface of the expansion block (43) is a tapered surface, and the tapered surface of the expansion block (43) is used for radially extruding the soft silicone (48) in the radial slots onto the inner peripheral surface of the inner ring of the product (5) to realize inner expansion support.

6. A fixture device for expanding chuck according to claim 5, wherein: When the expansion block (43) is adjusted to move upward and fasten relative to the bottom end surface of the loose pull rod (23) through the adjusting locking bolt (44), the upward movement of the tapered surface of the expansion block (43) causes the expansion sleeve to be radially extruded outward to the inner ring of the product (5), thereby strengthening the support.

Images