Numerical control lathe for bearing machining

Abstract

This utility model relates to the field of bearing grinding technology, and in particular to a CNC lathe for bearing processing, including a machine housing, a spindle structure mounted on the machine housing, a grinding structure, and a moving structure for controlling the grinding structure to move closer to or further away from the spindle structure. The spindle structure of this utility model includes a spindle box, a spindle module, and a support module, wherein the support module can be detachably connected to the spindle box; the spindle box has a mounting cavity for the spindle module to pass through, and both ends of the spindle module can be supported and fixed to the spindle box by the support module. This utility model enables the pre-assembly of the spindle module by setting the support module, and the spindle module can be quickly installed after the spindle box is in place, thereby improving the assembly efficiency of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of bearing grinding technology, and in particular to a CNC lathe for bearing processing. Background Technology

[0002] Bearings are one of the important components in mechanical equipment. They are mainly used to support rotating mechanical parts and reduce the coefficient of friction during their movement.

[0003] In the bearing production process, bearings need to be ground (outer or inner ring). CNC lathes (also called bearing grinding machines) are one of the main equipment for grinding bearings. Currently, the spindle structure (the clamping structure that holds the bearing) of existing bearing grinding machines requires a step-by-step installation process between the spindle box and the spindle module (the clamping shaft used to hold the bearing). This means that the various components constituting the spindle module can only be installed step-by-step after the spindle box is in place. Furthermore, the spindle module cannot be disassembled after installation. Therefore, current technology does not allow for pre-assembly of the spindle module's structure. As a result, after purchasing the various components, companies must wait for the spindle box to be in place before gradually installing the spindle module components, significantly impacting the efficiency of equipment installation.

[0004] In addition, after the bearing to be processed is moved to a position close to the spindle module but before it is inserted into the spindle module, workers still need to push the bearing into the spindle module, which is inefficient and affects production.

[0005] In summary, necessary improvements need to be made to the existing CNC lathe (i.e., bearing grinding machine). Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a CNC lathe for bearing processing, which aims to solve the problems mentioned in the background technology.

[0007] The technical solution of this utility model is implemented as follows: A CNC lathe for bearing processing includes a machine housing, a spindle structure mounted on the machine housing, a grinding structure, and a moving structure for controlling the grinding structure to move closer to or further away from the spindle structure. The spindle structure includes: Spindle box; Spindle module; Support module, which can be detachably connected to the spindle box; The spindle box has at least one mounting cavity through which the spindle module passes, and both ends of the spindle module can be supported and fixed to the spindle box by the support module.

[0008] Preferably, the support module includes: First mounting body; Second mounting body; The first mounting body and the second mounting body are respectively detachably connected to both sides of the spindle box, and the first mounting body and the second mounting body are respectively provided with support ports for the spindle module to pass through and support the spindle module.

[0009] Preferably, the second mounting body is provided with at least one transmission port.

[0010] Preferably, the first mounting body and the second mounting body form a cavity for mounting the spindle module, wherein the spindle module includes: The main shaft is rotatably mounted on the chamber and has an axially penetrating shaft cavity; The clamping shaft is rotatably disposed within the shaft cavity and is coaxially arranged with the main shaft; A clamping frame is fixed to one end of a clamping shaft and has at least two axially movable clamping parts that can move away from or close to the clamping shaft, with each clamping part forming a clamping area for fixing a bearing. When the bearing is pushed into the clamping area, the clamping part moves away from the axis of the clamping shaft and then contacts the main shaft, and can be driven to rotate by the main shaft.

[0011] Preferably, the first mounting body includes a first body and a first sealing plate detachably connected to one end of the first body.

[0012] Preferably, the second mounting body includes a second body that can be detachably connected to the spindle box and a second sealing plate that can be detachably connected to one end of the second body; The second body also includes a pulley mounted on the main shaft and a support bearing for supporting the rotation of the clamping shaft.

[0013] By adopting the above technical solution: The spindle module of this utility model is designed to be detachable from the carrier (spindle box) through a support module, so that the spindle box or spindle module can be better protected when it is damaged.

[0014] Secondly, the spindle module of this utility model can also be pre-assembled through the support module. That is, when the spindle box is not yet in place, the spindle module and the support module of this utility model can be assembled first. Therefore, after the spindle box is in place, the pre-assembled spindle module can be quickly installed on the spindle box, thereby improving the assembly efficiency of the equipment.

[0015] Preferably, the spindle box is further equipped with a feeding assembly, the feeding assembly comprising: A rocker arm is hinged to the spindle box and can be controlled by a first driver to rotate at the hinge. The receiving block is fixedly connected to the rocker arm and passes through the clamping area of ​​the clamping frame when the rocker arm rotates; The pusher shaft is slidably connected to the receiving block; A return spring is located between the pusher shaft and the receiving block; The lever arm is hinged to the rocker arm, and one end of it abuts against one end of the pusher shaft; The second actuator is mounted on the rocker arm and is used to control one end of the lever arm to move closer to or further away from the rocker arm; When one end of the lever arm moves away from the rocker arm, the other end of the lever arm drives the pusher to move axially toward the clamping area.

[0016] Preferably, the receiving block is provided with a receiving sleeve, the receiving sleeve has a receiving groove, and the pushing shaft passes through the receiving groove when it moves close to the clamping area.

[0017] By adopting the above technical solution: This invention also includes a feeding component on the spindle box, which can automatically feed materials, eliminating the need for worker intervention in the entire grinding process of the bearing and greatly improving the automation effect. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a specific embodiment of the present utility model; Figure 2 for Figure 1 Another perspective and intention; Figure 3 for Figure 1 A schematic diagram of the spindle structure, grinding structure, and moving structure is retained. Figure 4 for Figure 3 A schematic diagram of the hidden spindle structure and grinding structure; Figure 5 for Figure 4 A schematic diagram of the hidden y-axis movement device; Figure 6 for Figure 3 A structural diagram retaining the main spindle structure and support; Figure 7 for Figure 6 AA section view in the middle; Figure 8This is a schematic diagram of the structure of the clamping shaft and the clamping frame in a specific embodiment of this utility model; Figure 9 This is a schematic diagram of the installation of the main shaft structure and feeding assembly of this utility model; Figure 10 This is a schematic diagram showing the positions of the feeding component and the clamping frame in a specific embodiment of this utility model; Figure 11 This is a schematic diagram of the feeding component in a specific embodiment of the present invention; Figure 12 for Figure 10 BB section view in the middle; Figure 13 This is a schematic diagram of the unloading tool in a specific embodiment of the present utility model. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figures 1-13 As shown, this embodiment discloses a CNC lathe for bearing processing, including a machine housing 10, a spindle structure 20 mounted on the machine housing 10, a grinding structure 30, and a moving structure 40 for controlling the grinding structure 30 to move closer to or away from the spindle structure 20. In this embodiment, the machine housing 10 is also provided with a vibratory feeder 50 and a CNC unit 60. The CNC unit 60 is used to control the spindle structure 20, the grinding structure 30, the moving structure 40, and the vibratory feeder 50. In this embodiment, the CNC unit 60 and the vibratory feeder 50 are prior art, and their principles will not be elaborated in this embodiment.

[0022] In this embodiment, the vibratory feeder 50 has a discharge track 500. The bearings that need to be ground are placed on the vibratory feeder 50, and the vibratory feeder 50 can transport the bearings into the discharge track 500 and drop them at the output of the discharge track 500.

[0023] In this embodiment, to avoid the grinding process being obscured by light, a lighting lamp 70 is also provided, with the lighting lamp 70 illuminating the bearing grinding position.

[0024] In this embodiment, a discharge track 80 is also included. The discharge track 80 is located below the grinding position in this embodiment. After the bearing is ground, it falls onto the discharge track 80 and is discharged along the discharge track 80. In actual use, a material frame should be placed at the output end of the discharge track 80 for material collection.

[0025] In this embodiment, a bracket 100 is fixed on the chassis 10, and an inclined chip removal channel 101 is formed between the chassis 10 and the bracket 100. The waste chips generated by bearing grinding and falling on the chassis 10 can be discharged through the chip removal channel 101. Accordingly, when in use, a dust collection frame needs to be placed at the output end of the chip removal channel 101 to collect the waste chips.

[0026] The bearing being polished in this embodiment is not a pre-assembled bearing, but rather a component that makes up the bearing, such as the inner ring and outer ring. This embodiment will begin with a detailed description of polishing the inner ring wall of the bearing, as follows: like Figure 1 and Figure 3 The grinding structure 30 of this embodiment includes a grinding table 300 and a clamp 301 fixed on the grinding table 300. A grinding tool 302 is fixed on the clamp 301 by fasteners such as bolts. In this embodiment, the clamp 301 has a threaded hole that runs from top to bottom. The bolt is screwed in from top to bottom and abuts against the grinding tool 302, thereby fixing the grinding tool 302. Figure 1 and Figure 3 The shape shown is not the actual shape of the polishing tool; it only indicates the fixed position of the polishing tool 302. The actual use of the polishing tool 302 shall prevail.

[0027] like Figure 1 , Figures 3-6 As shown, the moving structure 40 in this embodiment includes an x-axis moving device and a y-axis moving device, wherein: x-axis moving device such as Figures 3-5 As shown, it consists of an x-axis motor 400, an x-axis lead screw 401, and an x-axis lead screw bearing seat 402. In this embodiment, the bracket 100 is fixed with two x-axis slide rails 403. An x-axis slider 404 is slidably connected to the x-axis slide rails 403. An x-axis moving seat 405 is fixedly connected to the x-axis lead screw bearing seat 402 and the x-axis slider 404. The position of the x-axis moving seat 405 near the spindle box 100 is set as an inverted V-shaped discharge surface 405b, which can minimize the accumulation of grinding debris on the x-axis moving seat 405.

[0028] The principle of the x-axis moving device in this embodiment is as follows: the x-axis motor controls the rotation of the x-axis lead screw to control the movement of the x-axis lead screw bearing seat 402, thereby controlling the x-axis moving seat 405 to reciprocate in the x-axis direction.

[0029] The y-axis moving device includes a y-axis fixed seat 406 fixed on the x-axis moving seat 405, a y-axis motor 407 fixed on the y-axis fixed seat 406, a y-axis lead screw 408 controlled by the y-axis motor 407, and a y-axis lead screw bearing seat 409 fitted on the y-axis lead screw 408. In this embodiment, two y-axis slide rails 410 are fixedly connected to the y-axis fixed seat 406, and a y-axis slider 411 is slidably connected to the y-axis slide rails 410. A y-axis moving seat 412 is fixedly connected to the y-axis lead screw bearing seat 409 and the y-axis slider 411. In this embodiment, the grinding table 300 is fixed on the y-axis moving seat 412.

[0030] The principle of the y-axis moving device in this embodiment is as follows: the y-axis motor controls the rotation of the y-axis lead screw to control the movement of the y-axis lead screw bearing seat 409, thereby controlling the y-axis moving seat 412 to reciprocate in the y-axis direction.

[0031] In this embodiment, the grinding table can be moved closer to or further away from the spindle structure 20 by controlling the moving structure (two lead screw structures).

[0032] refer to Figures 6-7 The spindle structure 20 in this embodiment includes: Spindle box 200; Spindle module; Support module 202, which can be detachably connected to spindle box 200; The spindle box 200 is provided with a mounting cavity 200a through which the spindle module 201 passes, and both ends of the spindle module 201 can be supported and fixed on the spindle box 200 by the support module 202.

[0033] In this embodiment, an x-axis moving seat movable cavity 405a is provided between the spindle box 200 and the bracket 100 for the x-axis moving seat 405 to move. An inverted V-shaped bracket 405c adapted to the x-axis moving seat 405 is also fixed on the spindle box 200. A sealing part 405d (such as a rubber gasket) is provided on the mating surface of the inverted V-shaped bracket 405c and the x-axis moving seat 405. In this way, when the x-axis moving seat 405 enters the x-axis moving seat movable cavity 405a, the sealing part 405d can clean the discharge surface 405b of the x-axis moving seat 405. It should be noted that in order to ensure the smooth movement of the x-axis moving seat 405, the operator needs to clean the sealing part 405d regularly and replace it when necessary.

[0034] The support module 202 includes: First installation body 2021; Second mounting body 2022; The first mounting body 2021 and the second mounting body 2022 can be detachably connected to both sides of the spindle box 200 by bolts. The first mounting body 2021 and the second mounting body 2022 are respectively provided with support ports for the spindle module to pass through and support the spindle module. In this embodiment, the first mounting body 2021 and the second mounting body 2022 are located at both ends of the mounting cavity 200a.

[0035] In this embodiment: the second mounting body 2022 is provided with a transmission port 2022a, which is located at the bottom of the second mounting body 2022.

[0036] In this embodiment: the first mounting body 2021 and the second mounting body 2022 form a chamber 2023 for mounting the spindle module, wherein the spindle module includes: The main shaft 210 is rotatably mounted on the chamber 2023 and has an axially penetrating shaft cavity 210a. Several bearings 210b are installed inside the chamber 2023. The clamping shaft 211 is rotatably disposed in the shaft cavity 210a and is coaxially disposed with the main shaft 210; The clamping frame 212 is fixed to one end of the clamping shaft 211, and has four movable clamping parts 212a that can move away from or close to the axis a (also called axis line or axis) of the clamping shaft 211, forming a clamping area for fixing the bearing between each clamping part 212a; When the bearing is pushed into the clamping area, the clamping part 212a moves away from the axis of the clamping shaft 211 and comes into contact with the main shaft 210, and can be driven to rotate by the main shaft 210.

[0037] In this embodiment: the first mounting body 2021 includes a first body and a first sealing plate 2021a detachably connected to one end of the first body 2021. The first sealing plate 2021a is detachably connected to the first mounting body 2021 by bolts, and the first body is detachably connected to the spindle box 100 by bolts.

[0038] In this embodiment, the second mounting body 2022 includes a second body that can be detachably connected to the spindle box 100 and a second sealing plate 2022b that can be detachably connected to one end of the second body; The second body also includes a pulley 24 mounted on the main shaft 210, and a support bearing 25 for supporting the rotation of the clamping shaft 211.

[0039] In this embodiment, a drive motor 10a is installed inside the chassis 10, a drive pulley 10b is installed on the motor shaft of the drive motor 10a, and a belt 10c is connected between the drive pulley 10b and the pulley 24. The transmission port 2022a is provided so that the belt 10c can be connected between the drive pulley 10b and the pulley 24.

[0040] like Figure 1 , Figure 3 as well as Figures 9-12 As shown, a feeding assembly is also installed on the spindle box 200 in this embodiment. In this embodiment, the feeding assembly includes: The rocker arm 900 is hinged to the spindle box 200 and can be controlled by the first driver 901 to rotate at the hinge. In this embodiment, the spindle box 200 is provided with a first hinge seat 902. The rocker arm 900 is hinged to the first hinge seat 902 through the first shaft 903. The first driver 901 is a cylinder, which is hinged to the spindle box 200. The output end of the cylinder is hinged to the first shaft 903 through the drive block 904. That is, the drive block 904 is fixed to the first shaft 903, and the other end of the drive block 904 is hinged to the output end of the cylinder. When the cylinder controls one end of the drive block to move, it can control the first shaft 903 to rotate, thereby causing the rocker arm 900 to rock. The receiving block 905 is fixedly connected to the rocker arm 900 and passes through the clamping area of ​​the clamping frame when the rocker arm 900 rotates. In this embodiment, the receiving block 905 can pass through the axis a of the clamping shaft. The pusher shaft 906 is slidably connected to the receiving block 905; A return spring 907 is located between the pusher shaft 906 and the receiving block 905; The lever arm 908 is hinged to the rocker arm 900, and one end abuts against one end of the pusher shaft 906; The second actuator 909 is mounted on the rocker arm 900 and is used to control one end of the lever arm 908 to move closer to or away from the rocker arm 900. The second actuator 909 is a cylinder. When one end of the lever arm 908 moves away from the rocker arm 900, the other end of the lever arm 908 drives the pusher shaft 906 to move toward the clamping area.

[0041] In this embodiment: the receiving block 905 is provided with a receiving sleeve 910, the receiving sleeve 910 has a receiving groove 911, and the pushing shaft 906 passes through the receiving groove 911 when it moves close to the clamping area.

[0042] In this embodiment, a pusher block 906a is provided at the end of the pusher shaft 906 away from the lever arm 908.

[0043] In this embodiment, the receiving sleeve 910 is a cylinder with a partially missing outer wall, a hollow interior, and axial penetration at both ends.

[0044] In this embodiment, a material blocking block 913 is also hinged to the spindle box 200, and the material blocking block 913 is located at the discharge end of the discharge track 500 under its own weight.

[0045] In this embodiment, the fixture of the grinding table can also fix the unloading tool. The unloading tool includes a base block 915, an unloading shaft 916 fixed on the base block 915, and a hook 917 provided at one end of the unloading shaft 916. The base block 915 is provided with two limiting holes, which can allow the bolt ends on the fixture to enter and play a limiting role. In this embodiment, the shaft diameter of the unloading shaft gradually decreases from the base block to the hook.

[0046] The principle of this embodiment is: 1. The spindle module and support module can be pre-assembled: When the spindle box is not yet in place, the spindle, pulley, bearings, and first mounting body can be pre-assembled, as can the clamping shaft and second mounting body. Once the spindle box is in place, the pre-assembled first mounting body is inserted into the mounting cavity from one end of the spindle box and fixed in place. Then, the second mounting body is fixed to the spindle box from the other side. During installation, the clamping shaft passes through the spindle cavity to the other end, and then the clamping frame is threaded onto the clamping shaft through the end of the spindle box away from the pulley. This allows for rapid installation of the spindle structure. Therefore, it is unnecessary to wait for the spindle box to arrive and then install a number of bearings, spindles, clamping shafts, seals, and other components one by one on the spindle box, thus improving the efficiency of equipment assembly.

[0047] 2. In this embodiment, during grinding, an inner ring grinding tool (such as a grinding file) and a material unloading tool (see reference) are respectively installed on the two clamps of the grinding table. Figure 13 Furthermore, the distance between the two clamps is greater than the distance from the clamping area to the side wall of the spindle box, so that when the grinding tool is located in the grinding area, the unloading tool is located on one side of the spindle box and will not contact the spindle box.

[0048] During grinding, first control the swing arm to rotate clockwise and move the receiving sleeve to the output end of the discharge track. Then lift the blocking block and the bearing in the discharge track enters the receiving groove of the receiving sleeve. Then the swing arm rotates counterclockwise. When the receiving sleeve separates from the blocking block, the blocking block can prevent the bearing in the discharge track from discharging material. When the rocker arm rotates counterclockwise and moves the receiving sleeve to align with the axis of the clamping shaft, the receiving sleeve is aligned with the clamping area. Then, the lever arm is controlled by the second driver to move and the bearing in the receiving sleeve (receiving groove) is pushed into the clamping area by the pushing shaft. After being pushed in, the lever arm resets and the rocker arm rotates clockwise again and moves to the discharge track to prepare for the next feeding. After the bearing enters the clamping area, the clamping frame unfolds and contacts the spindle. When the spindle rotates, the clamping shaft and clamping frame also rotate simultaneously. Subsequently, the grinding tool is controlled by the moving structure to contact the inner ring wall of the bearing and completes the grinding of the bearing while the bearing rotates. After grinding, the unloading tool is controlled by the moving structure to pass through the inner ring of the bearing and to approach the inner ring wall of the bearing until the hook can hook out the bearing to complete the position adjustment. Finally, the unloading tool is controlled by the moving structure to move away from the spindle box and use the hook to hook out the bearing in the clamping area, causing the bearing to fall into the unloading track, completing one round of grinding.

[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A numerical control lathe for bearing machining, comprising a machine case (10), a spindle structure (20) installed on the machine case (10), a grinding structure (30), and a moving structure (40) for controlling the movement of the grinding structure (30) close to or away from the spindle structure (20), characterized in that: The main shaft structure (20) comprises: A main shaft box (200); A main shaft module; A support module (202) capable of being detachably connected with the main shaft box (200); Wherein, the main shaft box (200) is provided with at least an installation cavity (200a) for the main shaft module to pass through, and the two ends of the main shaft module are capable of being supported and fixed on the main shaft box (200) by the support module (202).

2. The numerical control lathe for bearing machining according to claim 1, characterized in that: The support module (202) comprises: A first mounting body (2021); A second mounting body (2022); Wherein, the first mounting body (2021) and the second mounting body (2022) are respectively detachably connected on the two sides of the main shaft box (200), and the first mounting body (2021) and the second mounting body (2022) are respectively provided with a support opening for the main shaft module to pass through and support the main shaft module.

3. The numerically controlled lathe for machining a bearing according to claim 2, characterized in that: The second mounting body (2022) is provided with at least one transmission opening (2022a).

4. The numerical control lathe for bearing machining according to claim 2 or 3, characterized in that: The first mounting body (2021) and the second mounting body (2022) are formed with a cavity (2023) for installing the main shaft module, wherein the main shaft module comprises: A main shaft (210) rotatably arranged in the cavity (2023) and having an axial shaft cavity (210a) passing therethrough; A clamping shaft (211) rotatably arranged in the shaft cavity (210a) and coaxially arranged with the main shaft (210); A clamping frame (212) fixed to one end of the clamping shaft (211) and having at least two clamping portions (212a) capable of moving away from or approaching the axis of the clamping shaft, and a clamping area for fixing a bearing being formed between the clamping portions (212a); Wherein, when the bearing is pushed into the clamping area, the clamping portion (212a) moves away from the axis of the clamping shaft (211) and comes into contact with the main shaft (210), and can be driven to rotate by the main shaft (210).

5. The numerically controlled lathe for machining of bearings according to claim 4, characterized in that: The first mounting body (2021) comprises a first body and a first sealing disc (2021a) detachably connected to one end of the first body.

6. The numerically controlled lathe for machining of bearings according to claim 4, characterized in that: The second mounting body (2022) comprises a second body capable of being detachably connected with the main shaft box and a second sealing disc (2022b) detachably connected to one end of the second body; The second body is further provided with a belt pulley (24) mounted on the main shaft (210) and a support bearing (25) for supporting the rotation of the clamping shaft (211).

7. The numerically controlled lathe for machining of bearings according to claim 4, characterized in that: The main shaft box (200) is further provided with a feeding assembly, and the feeding assembly comprises: A swing arm (900) hinged to the main shaft box (200) and capable of being controlled by a first driver (901) to rotate at the hinge; A receiving block (905) fixedly connected to the swing arm (900) and passing through the clamping area of the clamping frame when the swing arm (900) rotates; A pushing shaft (906) slidingly connected to the receiving block (905); A return spring (907) arranged between the pushing shaft (906) and the receiving block (905); A lever arm (908) hinged to the swing arm (900) and abutting one end of the pushing shaft (906); A second driver (909) is installed on the swing arm (900) and is used to control one end of the lever arm (908) to move close to or away from the swing arm (900); When one end of the lever arm (908) moves away from the swing arm (900), the other end of the lever arm (908) drives the pushing shaft (906) to move towards the clamping area.

8. The numerically controlled lathe for machining a bearing according to claim 7, wherein: The receiving block (905) is provided with a receiving sleeve (910), and the receiving sleeve (910) has a receiving groove (911). When the pushing shaft (906) moves close to the clamping area, the pushing shaft (906) passes through the receiving groove (911).

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