Repair device for Z-axis auxiliary guide rail surface of FA-800 machining center

Abstract

The invention belongs to the technical field of machining center matched mechanical equipment, and particularly relates to an FA-800 machining center Z-axis auxiliary guide rail face repairing device which is composed of a guide rail sliding unit, a grinding wheel feeding unit, a main transmission unit, an auxiliary transmission unit and a travel switch. The grinding wheel feeding unit comprises a grinding wheel transverse feeding mechanism connecting plate, a grinding wheel transverse feeding dovetail base, a grinding wheel transverse feeding handle, a grinding wheel vertical feeding mechanism connecting plate, a grinding wheel vertical feeding dovetail base, a grinding wheel vertical feeding handle, a grinding wheel motor, a dish-shaped grinding wheel and a grinding wheel cover. The main transmission unit and the auxiliary transmission unit comprise main transmission unit bases, auxiliary transmission unit bases, chain tightness adjusting plates, main chain wheels, auxiliary chain wheels, chains and the like. According to the repairing device, the Z-axis main guide rail serves as the reference, the Z-axis auxiliary guide rail face is repaired, on the premise that stability and precision are guaranteed, the operation method is simple and rapid, the repairing efficiency is improved, and the repairing cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of supporting mechanical equipment for machining centers, and in particular is a repair device for the Z-axis secondary guide surface of an FA-800 machining center. Background Art

[0002] The Toyota FA-800 machining center is a relatively large machining center. Its guide rails are used in conjunction with primary and secondary guide rails. The primary guide rails ensure the rigidity and machining accuracy of the machine, while the secondary guide rails ensure precise positioning during rapid movement and share the machine's own weight. The primary guide rails utilize hydrostatic sliding friction, while the secondary guide rails utilize roller bearings to coordinate with the machine's guide rail rolling motion. The guide rail accuracy requirements must maintain parallelism with the primary guide rails. Due to the rigid rolling motion, a layer of wear-resistant steel strips is laid on the secondary guide rails to protect them. The bed guide rails are also the most easily worn, largest, and most difficult component of the machine tool. During long-term use, the guide steel belt on the Z-axis secondary guide surface of Toyota machining center FA-800 is broken. If it is not replaced in time and continues to be used, the machine tool secondary guide base will be used in direct contact, resulting in serious damage to the needle roller bearing on the bottom of the Y-axis base and the broken guide steel belt on the Z-axis secondary guide surface. The broken needle roller bearing and the broken guide steel belt further cause serious damage to the Z-axis secondary guide surface, causing the machine tool to lose machining accuracy. Since the guide steel belt is very hard, if the damaged part of the Z-axis secondary guide surface is not repaired, even after replacing the guide steel belt and needle roller bearing, when the needle roller bearing on the bottom of the Y-axis base moves to the damaged position of the Z-axis secondary guide surface, the guide steel belt will be broken again. At the same time, since the main and secondary guides are used in conjunction with each other, all running parts must maintain relative parallelism requirements to ensure the basic stability of the normal operation of the machine tool. Therefore, to repair the accuracy of the machine tool, the damaged part of the Z-axis secondary guide surface must be repaired first. Since the bed guide rails are too large and difficult to transport and process, it is too expensive to find a professional guide rail repair agency to repair them.

[0003] Therefore, under this circumstance, it is necessary to develop an economical, efficient, easy-to-operate, high-precision, and high-stability repair device for the Z-axis secondary guide surface of the FA-800 machining center, and the economic value it creates is also extremely high. Summary of the Invention

[0004] In order to achieve the above-mentioned purpose, the present invention provides a device for being installed on the main guide rail and taking the Z-axis main guide rail as a reference to efficiently, stably, accurately and conveniently repair the Z-axis secondary guide surface of the FA-800 machining center. The specific technical solution adopted is: a repair device for the Z-axis secondary guide surface of the FA-800 machining center, which is detachably arranged on the Z-axis guide rail of the FA-800 machining center. The Z-axis guide rail includes two groups of symmetrically arranged Z-axis main guide rails and Z-axis secondary guide rails. The Z-axis main guide rail is located on the outside of the Z-axis secondary guide rail and the horizontal height of the Z-axis main guide rail is higher than that of the Z-axis secondary guide rail. The repair device at least includes a guide rail sliding unit, a grinding wheel feed Unit, main transmission unit and auxiliary transmission unit, wherein the guide rail sliding unit is composed of two groups of guide mechanisms that can fit the Z-axis main rail and slide along the Z-axis main rail, a main connecting rod and an auxiliary connecting rod located above the guide mechanism and respectively connected to the two ends of the two guide mechanisms, and a reinforcing connecting rod connecting the main connecting rod and the auxiliary connecting rod; the guide mechanism is concave matching the shape of the Z-axis main rail and is composed of a main rail surface sliding guide plate located above the Z-axis main rail, a main rail side sliding guide plate located on the side of the Z-axis main rail and a main rail lower sliding guide plate located below the Z-axis main rail; a chain fixing block is provided below the middle of the main connecting rod and the auxiliary connecting rod;

[0005] The grinding wheel feeding unit is arranged between the main connecting rod and the auxiliary connecting rod of the guide rail sliding unit, and the grinding wheel feeding unit at least comprises a grinding wheel transverse feeding mechanism connecting plate, a grinding wheel transverse feeding dovetail seat, a grinding wheel vertical feeding mechanism connecting plate, a grinding wheel vertical feeding dovetail seat, a grinding wheel motor and a disc-shaped grinding wheel which are arranged in sequence. The grinding wheel transverse feeding mechanism connecting plate is fixedly connected to the main connecting rod and the reinforcing connecting rod of the guide rail sliding unit, the grinding wheel transverse feeding dovetail seat is installed on the side surface of the grinding wheel transverse feeding mechanism connecting plate and can move transversely along the grinding wheel transverse feeding mechanism connecting plate, the grinding wheel vertical feeding mechanism connecting plate is fixedly connected to the side surface of the grinding wheel transverse feeding dovetail seat, the grinding wheel vertical feeding dovetail seat is installed on the side surface of the grinding wheel vertical feeding mechanism connecting plate and can move vertically along the grinding wheel vertical feeding mechanism connecting plate, the grinding wheel motor is fixedly connected to the side surface of the grinding wheel vertical feeding dovetail seat, and the disc-shaped grinding wheel is installed on the rotating shaft of the grinding wheel motor and driven by the grinding wheel motor;

[0006] The main transmission unit consists of a main transmission unit base, a chain tension adjustment plate, a reducer, a motor and a main sprocket. The main transmission unit base is installed on the end face of the tail end of the Z-axis guide rail, the chain tension adjustment plate is installed on the main transmission unit base, the reducer and the motor are installed on the chain tension adjustment plate, and the main sprocket is installed on the rotating shaft of the motor.

[0007] The auxiliary transmission unit consists of an auxiliary transmission unit base and a secondary sprocket. The auxiliary transmission unit base is installed on the side of the X-axis guide rail of the FA-800 machining center. The secondary sprocket is installed on the auxiliary transmission unit base. The secondary sprocket and the main sprocket are connected by a chain.

[0008] Moreover, travel switches are provided at both ends of the Z-axis main guide rail.

[0009] Moreover, an oil cup is provided on the main guide rail surface sliding guide plate located above the Z-axis main guide rail.

[0010] Moreover, the grinding wheel feed unit also includes a grinding wheel lateral feed handle and a grinding wheel vertical feed handle. The grinding wheel lateral feed handle controls the lateral movement of the grinding wheel lateral feed dovetail seat on the connecting plate of the grinding wheel lateral feed mechanism, and the grinding wheel vertical feed handle controls the vertical movement of the grinding wheel vertical feed dovetail seat on the connecting plate of the grinding wheel vertical feed mechanism.

[0011] Moreover, a grinding wheel cover that matches the position of the dish-shaped grinding wheel is provided on the side of the grinding wheel vertical feed dovetail seat.

[0012] Moreover, the chain fixing blocks below the middle portions of the main connecting rod and the auxiliary connecting rod are both connected to the links.

[0013] Furthermore, the reinforcing connecting rod is in an N-shape.

[0014] Compared with the existing technology, the beneficial effects of this technical solution are:

[0015] 1. This device provides a repair system for the Z-axis secondary guide surface of a Toyota FA-800 machining center, using the Z-axis primary guide as a reference. While ensuring stability and accuracy, the simple and quick operation improves the repair efficiency and reduces repair costs for Toyota machining center bed secondary guides.

[0016] 2. The two sets of guide mechanisms, main connecting rods, auxiliary connecting rods and reinforcing connecting rods of the guide rail sliding unit are fixed to each other to realize the accuracy, stability and structural strength of the repair device based on the Z-axis main rail, and form a space for installing the grinding wheel feed unit.

[0017] 3. The grinding wheel feed unit can control the horizontal and vertical movement of the disc grinding wheel, thereby ensuring the accuracy and stability of the grinding wheel feed.

[0018] 4. The front travel switch and rear travel switch installed at the head and tail ends of the Z-axis main guide rail can prevent the repair mechanism from overtravel, avoiding damage to the repair device and the FA-800 machining center bed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a partial schematic diagram of the FA-800 machining center bed.

[0020] Figure 2 This is a partial schematic diagram of the FA-800 machining center bed installed with the repair device provided by the present invention.

[0021] Figure 3 Schematic diagram of the structure of the guide rail sliding unit;

[0022] Figure 4 Schematic diagram of the internal structure of the guide rail sliding unit.

[0023] Figure 5 Schematic diagram of the structure of the grinding wheel feed unit.

[0024] Figure 6 Schematic diagram of the structure of the main transmission unit.

[0025] Figure 7 It is a structural diagram of the auxiliary transmission unit.

[0026] Explanation of reference numerals: 1-guide rail sliding unit, 2-grinding wheel feeding unit, 3-main transmission unit, 4-auxiliary transmission unit, 5-front travel switch, 6-rear travel switch, 101-auxiliary connecting rod, 102-main connecting rod, 103-reinforced connecting rod, 104-main rail surface sliding guide plate, 105-main rail side sliding guide plate, 106-main rail lower sliding guide plate, 107-automatic oil dripping cup, 108-main connecting rod chain fixing block, 109-auxiliary connecting rod chain fixing block, 201-grinding wheel transverse feed mechanism connecting plate, 20 2-grinding wheel lateral feed dovetail seat, 203-grinding wheel lateral feed handle, 204-grinding wheel vertical feed mechanism connecting plate, 205-grinding wheel vertical feed dovetail seat, 206-grinding wheel vertical feed handle, 207-grinding wheel motor, 208-disc grinding wheel, 209-grinding wheel cover, 301-main transmission unit base, 302-chain tension adjustment plate, 303-reducer, 304-motor, 305-main sprocket, 306-chain, 401-auxiliary transmission unit base, 402-auxiliary sprocket, 7-Z-axis main guide surface, 8-Z-axis auxiliary guide surface. DETAILED DESCRIPTION

[0027] The present invention will be described in detail below with reference to the accompanying drawings and embodiments, but the present invention is not limited to the following embodiments.

[0028] Figure 1 This is a partial schematic diagram of the bed of Toyota's FA-800 machining center. The Z-axis guide rails of the FA-800 machining center include two sets of symmetrically arranged Z-axis main guide rails 7 and Z-axis secondary guide rails 8. The Z-axis main guide rails are located on the outside of the Z-axis secondary guide rails and the horizontal height of the Z-axis main guide rails is higher than that of the Z-axis secondary guide rails. Figure 1 The one perpendicular to the Z-axis guide is the X-axis guide of the FA-800 machining center.

[0029] Figure 2 This is a partial schematic diagram of the FA-800 machining center bed after the installation of the repair device embodiment. The repair device is detachable and consists only of a guide rail sliding unit 1, a grinding wheel feed unit 2, a main transmission unit 3, a sub-transmission unit 4, a front travel switch 5 and a rear travel switch 6.

[0030] Guide rail sliding unit such as Figure 3 and Figure 4 As shown, Figure 4 For display Figure 3 The guide rail sliding unit, which is not visible in the figure, includes a main connecting rod 102, a secondary connecting rod 101, a reinforcing connecting rod 103, two sets of guide mechanisms, an oil cup 107 capable of automatically dripping oil, a main connecting rod chain fixing block 108, and a secondary connecting rod chain fixing block 109. Both sets of guide mechanisms can fit in place and slide along the Z-axis main rail. The guide mechanism is concave and matches the shape of the Z-axis main rail and consists of a main rail surface sliding guide plate 104 located above the Z-axis main rail, a main rail side sliding guide plate 105 located on the side of the Z-axis main rail, and a main rail lower sliding guide plate 106 located below the Z-axis main rail. The main connecting rod and the secondary connecting rod are located above the guide mechanism and respectively connect the two ends of the two guide mechanisms. The N-shaped reinforcing connecting rod connects the main connecting rod and the secondary connecting rod. The guide mechanism, main connecting rod, secondary connecting rod, and reinforcing connecting rod are fixed to each other to achieve the Z-axis main rail as a reference, jointly ensuring the accuracy, stability, and structural strength of the repair device, and forming a space for installing the grinding wheel feed unit 2. An automatic oil-drip cup 107 is mounted on the main guide surface sliding guide plate 104, providing automatic lubrication of the guide mechanism as it moves on the Z-axis main guide. A main connecting rod chain fixing block 108 is mounted below the center of the main connecting rod, while a secondary connecting rod chain fixing block 109 is mounted below the center of the secondary connecting rod. These two chain fixing blocks connect chain 306, ensuring uniform and stable movement of the guide rail sliding unit on the Z-axis main guide rail as chain 306 moves.

[0031] Grinding wheel feed unit Figure 5As shown, the grinding wheel feeding unit 2 is arranged between the main connecting rod and the auxiliary connecting rod of the guide rail sliding unit, and sequentially includes, in the order of the structure fixed to the side of the main connecting rod and the reinforcing connecting rod, a grinding wheel transverse feeding mechanism connecting plate 201, a grinding wheel transverse feeding dovetail base 202, a grinding wheel transverse feeding handle 203, a grinding wheel vertical feeding mechanism connecting plate 204, a grinding wheel vertical feeding dovetail base 205, a grinding wheel vertical feeding handle 206, a grinding wheel motor 207, a grinding wheel cover 209 and a disc-shaped grinding wheel 208. The grinding wheel transverse feeding mechanism connecting plate is fixed to the main connecting rod and the reinforcing connecting rod of the guide rail sliding unit; the grinding wheel transverse feeding dovetail base 202 is installed on the side of the grinding wheel transverse feeding mechanism connecting plate 201, the protruding part of the grinding wheel transverse feeding mechanism connecting plate matches the recessed part of the grinding wheel transverse feeding dovetail base, and the transverse movement of the grinding wheel transverse feeding dovetail base on the grinding wheel transverse feeding mechanism connecting plate can be controlled through the grinding wheel transverse feeding handle 203; the grinding wheel vertical feeding mechanism connecting plate is fixed to the side of the grinding wheel transverse feeding dovetail base, the grinding wheel vertical feeding dovetail base 205 is installed on the side of the grinding wheel vertical feeding mechanism connecting plate 204, the protruding part of the grinding wheel vertical feeding mechanism connecting plate matches the recessed part of the grinding wheel vertical feeding dovetail base, and the vertical movement of the grinding wheel vertical feeding dovetail base on the grinding wheel vertical feeding mechanism connecting plate can be controlled through the grinding wheel vertical feeding handle 206; the disc-shaped grinding wheel 208 is installed on the rotating shaft of the grinding wheel motor 207 and is driven by the grinding wheel motor, and the grinding wheel motor 207 is arranged on the grinding wheel vertical feeding dovetail base, so that the movement of the disc-shaped grinding wheel in the transverse and vertical directions can be controlled by controlling the grinding wheel transverse feeding handle and the grinding wheel vertical feeding handle, thereby completing the feeding. The grinding wheel cover 209 is arranged on the side of the grinding wheel vertical feeding dovetail base and matches the position of the disc-shaped grinding wheel, so as to prevent the broken grinding wheel fragments and abrasive debris from flying out and hurting people.

[0032] As shown in the figure, Figure 6 The main transmission unit 3 includes a main transmission unit base 301, a chain tightness adjusting plate 302, a speed reducer 303, a motor 304 and a main sprocket 305. The main transmission unit base is installed on the end face of the original screw rod base installed at the tail of the Z-axis guide rail of the bed body, and the chain tightness adjusting plate is installed on the main transmission unit base to adjust the tightness of the chain. The speed reducer is installed on the chain tightness adjusting plate, the motor and the main sprocket are installed on the speed reducer, the main sprocket is connected with the chain 306, and the motor rotates to drive the main sprocket on the speed reducer to rotate and drive the chain.

[0033] As shown in the figure, Figure 7 The auxiliary transmission unit 4 is composed of an auxiliary transmission unit base 401 and an auxiliary sprocket 402, and the auxiliary transmission unit base is installed on the side of the X-axis guide rail of the FA-800 machining center. The auxiliary sprocket is installed on the auxiliary transmission unit base, the auxiliary sprocket and the main sprocket are connected through the chain, and the auxiliary sprocket rotates when the chain 306 rotates, so as to ensure the circulating rotation of the chain.

[0034] The front travel switch 5 and the rear travel switch 6 are respectively installed at the head and tail ends of the Z-axis main guide rail to prevent the repair mechanism from overtravel and hitting the motor 304 or hitting the FA-800 machining center bed.

[0035] The installation method of the repair device is as follows: the main rail surface sliding guide plate, the main rail side sliding guide plate, and the main rail bottom sliding guide plate of the guide rail sliding unit of the repair mechanism are fitted on the main rail of the bed and can slide along the main rail, and the straightness error of the repair mechanism moving on the Z-axis main rail is controlled by adjusting the distance and gap between each guide plate and the connecting rod. The chain is installed on the main sprocket of the main transmission unit, and passes through the main connecting rod chain fixing block and the secondary connecting rod chain fixing block of the guide rail sliding unit, and the chain is straightened and parallel to the main rail, thereby determining the position of the secondary transmission unit installed on the side of the X-axis guide rail and installing it. Subsequently, the main sprocket of the main transmission unit, the main connecting rod chain fixing block and the secondary connecting rod chain fixing block of the guide rail sliding unit, and the secondary sprocket of the secondary transmission unit are connected with a chain, and the chain tension adjustment plate is adjusted to tighten the chain to complete the installation of the repair mechanism.

[0036] The method of using this repair device is as follows: after installation, control the grinding wheel transverse feed handle and the grinding wheel vertical feed handle to control the disc grinding wheel to move above the auxiliary guide rail surface, start the grinding wheel motor, and slowly adjust the grinding wheel vertical feed handle until the disc grinding wheel rubs the auxiliary guide rail surface, then adjust the grinding wheel transverse feed handle to make the disc grinding wheel away from the auxiliary guide rail surface by a certain distance. At this time, according to the wear of the guide rail, by observing the scale on the grinding wheel vertical feed handle, feed the disc grinding wheel downward by 0.05mm-0.10mm.

[0037] Start the main transmission unit motor in forward rotation, and the chain will drive the grinding wheel to move along the main rail through the guide rail sliding unit. It will stop when it hits the front travel switch. At this time, the grinding wheel will be fed horizontally by observing the scale on the horizontal feed handle. Then, the main transmission unit motor is reversed to make the disc grinding wheel move in the opposite direction along the main rail until it hits the rear travel switch and stops. After the grinding wheel is fed horizontally through the horizontal feed handle, the main transmission unit motor is turned forward again. This process is repeated until the secondary guide rail surface is ground.

[0038] After each auxiliary guide surface grinding is completed, the grinding wheel horizontal feed handle is controlled to make the disc grinding wheel withdraw from the auxiliary guide surface, and then the grinding wheel vertical feed handle is controlled to make the disc grinding wheel feed downward, and the auxiliary guide surface grinding is performed again until the auxiliary guide surface repair is completed.

Claims

1. A repair device for the Z-axis secondary guide surface of an FA-800 machining center. The device is detachably mounted on the Z-axis guide of the FA-800 machining center. The Z-axis guide comprises two sets of symmetrically arranged Z-axis primary guides and Z-axis secondary guides. The Z-axis primary guides are located outside the Z-axis secondary guides and are at a higher level than the Z-axis secondary guides. The device is characterized by: The repair device at least includes a guide rail sliding unit, a grinding wheel feeding unit, a main transmission unit and a sub-transmission unit, wherein the guide rail sliding unit is composed of two groups of guide mechanisms that can fit the Z-axis main rail and slide along the Z-axis main rail, a main connecting rod and a sub-connecting rod located above the guide mechanism and respectively connected to the two ends of the two guide mechanisms, and a reinforcing connecting rod connecting the main connecting rod and the sub-connecting rod. The guide mechanism is concave and matches the shape of the Z-axis main rail and is composed of a main rail surface sliding guide plate located above the Z-axis main rail, a main rail side sliding guide plate located on the side of the Z-axis main rail and a main rail lower sliding guide plate located below the Z-axis main rail. A chain fixing block is provided below the middle of the main connecting rod and the sub-connecting rod. The grinding wheel feeding unit is arranged between the main connecting rod and the auxiliary connecting rod of the guide rail sliding unit, and the grinding wheel feeding unit at least comprises a grinding wheel transverse feeding mechanism connecting plate, a grinding wheel transverse feeding dovetail seat, a grinding wheel vertical feeding mechanism connecting plate, a grinding wheel vertical feeding dovetail seat, a grinding wheel motor and a disc-shaped grinding wheel which are arranged in sequence. The grinding wheel transverse feeding mechanism connecting plate is fixedly connected to the main connecting rod and the reinforcing connecting rod of the guide rail sliding unit, the grinding wheel transverse feeding dovetail seat is installed on the side surface of the grinding wheel transverse feeding mechanism connecting plate and can move transversely along the grinding wheel transverse feeding mechanism connecting plate, the grinding wheel vertical feeding mechanism connecting plate is fixedly connected to the side surface of the grinding wheel transverse feeding dovetail seat, the grinding wheel vertical feeding dovetail seat is installed on the side surface of the grinding wheel vertical feeding mechanism connecting plate and can move vertically along the grinding wheel vertical feeding mechanism connecting plate, the grinding wheel motor is fixedly connected to the side surface of the grinding wheel vertical feeding dovetail seat, and the disc-shaped grinding wheel is installed on the rotating shaft of the grinding wheel motor and driven by the grinding wheel motor; The main transmission unit consists of a main transmission unit base, a chain tension adjustment plate, a reducer, a motor and a main sprocket. The main transmission unit base is installed on the end face of the tail end of the Z-axis guide rail, the chain tension adjustment plate is installed on the main transmission unit base, the reducer and the motor are installed on the chain tension adjustment plate, and the main sprocket is installed on the rotating shaft of the motor. The auxiliary transmission unit consists of an auxiliary transmission unit base and a secondary sprocket. The auxiliary transmission unit base is installed on the side of the X-axis guide rail of the FA-800 machining center. The secondary sprocket is installed on the auxiliary transmission unit base. The secondary sprocket and the main sprocket are connected by a chain.

2. The repair device for the Z-axis secondary guide surface of the FA-800 machining center according to claim 1 is characterized in that: There are travel switches at both ends of the Z-axis main guide rail.

3. The repair device for the Z-axis secondary guide surface of the FA-800 machining center according to claim 1 is characterized in that: An oil cup is provided on the main guide rail surface sliding guide plate located above the Z-axis main guide rail.

4. The repair device for the Z-axis secondary guide surface of the FA-800 machining center according to claim 1 is characterized in that: The grinding wheel feed unit also includes a grinding wheel lateral feed handle and a grinding wheel vertical feed handle. The grinding wheel lateral feed handle controls the lateral movement of the grinding wheel lateral feed dovetail seat on the connecting plate of the grinding wheel lateral feed mechanism, and the grinding wheel vertical feed handle controls the vertical movement of the grinding wheel vertical feed dovetail seat on the connecting plate of the grinding wheel vertical feed mechanism.

5. The repair device for the Z-axis secondary guide surface of the FA-800 machining center according to claim 1 is characterized in that: A grinding wheel cover that matches the position of the dish-shaped grinding wheel is provided on the side of the grinding wheel vertical feed dovetail seat.

6. The repair device for the Z-axis secondary guide surface of the FA-800 machining center according to claim 1 is characterized in that: The chain fixing blocks below the middle parts of the main connecting rod and the auxiliary connecting rod are both connected to the links.

7. The repair device for the Z-axis secondary guide surface of the FA-800 machining center according to claim 1 is characterized in that: The reinforcing connecting rod is in an N shape.

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