Eccentric wheel mechanism of center hole grinding machine for grinding forming adjustment

Abstract

The utility model relates to the field of center grinding machines, in particular to a center hole grinding machine eccentric wheel mechanism used for grinding forming adjustment, which comprises a grinding machine frame, a guide rail vertically arranged on the front side surface of the grinding machine frame, a tailstock device in sliding fit with the bottom of the guide rail, and a three-center clamping unit in sliding fit with the guide rail and located above the tailstock device. A cross beam is transversely arranged on the surface of the front side of the grinding machine rack and located above the guide rail, a sliding block is transversely arranged on the cross beam in a sliding fit mode, a rotary disc guide rail is installed on the sliding block, a rotary disc sliding seat is arranged on the rotary disc guide rail in a sliding fit mode, and a grinding head part is installed on the rotary disc sliding seat. The grinding head is driven by a motor to accurately deflect by 1-3 degrees, the tension of a transmission chain is balanced by matching with a balancing weight, the fine adjustment process is stable and efficient, and the high-precision machining requirement is met.

Description

Technical Field

[0001] This utility model relates to the field of center grinding machine technology, and in particular to an eccentric wheel mechanism for grinding and adjusting center hole grinding machines. Background Technology

[0002] Currently, there are two main methods for machining center holes. One method is to scrape and grind the center hole using multi-edged centers and centers. This method results in poor machining accuracy, low success rate, and is time-consuming, labor-intensive, and inefficient. The other method is to machine the center hole using a center hole grinding machine. However, the grinding head components of existing center hole grinding machines rely heavily on mechanical transmission during machining, resulting in insufficient adjustment precision and making it difficult to meet the fine-tuning requirements of high-precision machining. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a center hole grinding machine for grinding and forming an eccentric wheel mechanism.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A center hole grinding machine for grinding an eccentric wheel mechanism for forming adjustment includes a grinding machine frame. A guide rail is vertically arranged on the front surface of the grinding machine frame. A tailstock device is slidably fitted at the bottom of the guide rail. A three-center clamping unit is slidably fitted on the guide rail and above the tailstock device. A crossbeam is horizontally arranged on the front surface of the grinding machine frame above the guide rail. A first slider is slidably fitted on the crossbeam. A rotary table guide rail is mounted on the first slider. A rotary table sliding seat is slidably fitted on the rotary table guide rail. A grinding head component is mounted on the rotary table sliding seat.

[0006] A lead screw mechanism is rotatably installed inside the grinding machine frame and on the back of the crossbeam. A spline shaft mechanism is rotatably installed below the lead screw mechanism. A motor is installed on a plate inside the grinding machine frame and on one side of the spline shaft mechanism. An eccentric wheel adjustment mechanism is installed at the output end of the motor.

[0007] Furthermore, in a preferred configuration, the eccentric wheel adjustment mechanism includes an eccentric wheel assembly and a connecting rod. The eccentric wheel assembly is mounted on the motor output end, one end of the connecting rod is slidably fitted onto the eccentric wheel assembly, and the other end is rotatably connected to the spline shaft mechanism.

[0008] In addition, a preferred structure is that the bottom of the rotary table sliding seat is provided with a mounting groove, a chain adjustment mechanism is connected to the mounting groove, a movable hole is opened in the middle of the rotary table guide rail, the movable hole is used for the movement of the chain adjustment mechanism, and a first sprocket is rotatably arranged in the movable hole, the first sprocket cooperates with the chain adjustment mechanism for transmission.

[0009] Furthermore, in a preferred configuration, a second sprocket is rotatably mounted on the shaft of the spline shaft mechanism on the same plane as the first sprocket. The second sprocket is used to drive the chain adjustment mechanism. A connecting disc is mounted on the shaft of the spline shaft mechanism on one side of the second sprocket. The connecting disc is used to connect to the connecting rod.

[0010] Furthermore, in a preferred configuration, the chain adjustment mechanism includes a second chain, one end of which is provided with a sliding seat connector for mounting in the mounting groove, and the other end of which is connected to a bushing. A bearing rotating head is rotatably mounted inside the bushing, and the end of the bearing rotating head away from the second chain is connected to a first chain.

[0011] Furthermore, in a preferred configuration, the second chain meshes with the teeth of the first sprocket, the first chain meshes with the teeth of the second sprocket, and a counterweight is connected to the other end of the first chain away from the bearing rotating head, with the counterweight suspended below the second sprocket.

[0012] Furthermore, in a preferred configuration, the eccentric wheel assembly includes a connecting shaft, one end of which is mounted on the motor output end, and the other end of which is fitted with a second slider. An eccentric wheel is slidably fitted onto the second slider, and a sliding cavity is provided on the eccentric wheel for sliding engagement with the second slider. A bearing is fitted on the outer wall of the eccentric wheel, and a mounting ring is fitted on the outside of the bearing. A sliding hole is provided on the outer wall of the mounting ring, and a connecting rod is slidably fitted into the sliding hole.

[0013] The beneficial effects of this utility model are as follows: The eccentric wheel adjustment mechanism is linked with the chain adjustment mechanism, and the mill head position is precisely deflected by 1-3° through motor drive. With the help of the counterweight block to balance the tension of the transmission chain, the fine adjustment process is stable and efficient, which can meet the needs of high-precision processing. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a center hole grinding machine;

[0015] Figure 2 This is a structural schematic diagram of the grinding machine frame from the rear view.

[0016] Figure 3 This is a schematic diagram of the internal structure of the grinding machine frame;

[0017] Figure 4 This is a schematic diagram of the structure when the lead screw and splined shaft are in contact.

[0018] Figure 5 This is a structural diagram of the rotary table guide rail and slider in their installed state.

[0019] Figure 6 This is a schematic diagram of the chain adjustment mechanism connected to the rotary table guide rail.

[0020] Figure 7 This is a schematic diagram of the rotary table guide rail and rotary table sliding seat after disassembly.

[0021] Figure 8 This is a schematic diagram of the internal structure of the rotary table guide rail;

[0022] Figure 9 This is a schematic diagram of the chain adjustment mechanism after it has been separated from the rotary table guide rail.

[0023] Figure 10 This is a partially enlarged structural diagram of the chain adjustment mechanism;

[0024] Figure 11 This is a schematic diagram of the disassembled motor and eccentric wheel assembly.

[0025] Figure 12 This is a schematic diagram of the disassembled eccentric wheel assembly;

[0026] In the diagram: 01 Grinding machine frame, 02 Guide rail, 03 Tailstock assembly, 04 Three-center clamping device, 05 Grinding head assembly, 06 Eccentric wheel adjustment mechanism, 010 Crossbeam, 011 First slider, 012 Rotary table guide rail, 0121 Movable hole, 0122 First sprocket, 013 Rotary table sliding seat, 0131 Mounting groove, 014 Lead screw mechanism, 015 Splined shaft mechanism, 0151 Connecting disc, 0152 Second sprocket, 1 Motor, 2 Chain adjustment mechanism, 21 First chain, 211 Bearing rotating head, 22 Counterweight, 23 Second chain, 231 Bearing sleeve, 232 Sliding seat connector, 3 Eccentric wheel assembly, 31 Connecting shaft, 32 Second slider, 33 Eccentric wheel, 331 Sliding cavity, 34 Bearing, 35 Mounting ring, 351 Sliding hole, 4 Connecting rod. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Reference Figure 1-12A center hole grinding machine for grinding an eccentric wheel mechanism for forming adjustment includes a grinding machine frame 01. A guide rail 02 is vertically arranged on the front surface of the grinding machine frame 01. A tailstock device 03 is slidably fitted at the bottom of the guide rail 02. A three-center clamping unit 04 is slidably fitted on the guide rail 02 and above the tailstock device 03. A crossbeam 010 is horizontally arranged on the front surface of the grinding machine frame 01 above the guide rail 02. A first slider 011 is slidably fitted on the crossbeam 010. A rotary table guide rail is mounted on the first slider 011. 012, a rotary table sliding seat 013 is slidably fitted on the rotary table guide rail 012, and a grinding head component 05 is installed on the rotary table sliding seat 013. A lead screw mechanism 014 is rotatably installed inside the grinding machine frame 01 and on the back of the crossbeam 010. A spline shaft mechanism 015 is rotatably fitted below the lead screw mechanism 014. A motor 1 is installed on a plate inside the grinding machine frame 01 and on one side of the spline shaft mechanism 015. An eccentric wheel adjustment mechanism 06 is installed at the output end of the motor 1 to achieve adjustment of the motor 1.

[0029] The eccentric wheel adjustment mechanism 06 includes an eccentric wheel assembly 3 and a connecting rod 4. The eccentric wheel assembly 3 is mounted on the output end of the motor 1. One end of the connecting rod 4 is slidably fitted on the eccentric wheel assembly 3, and the other end is rotatably connected to the spline shaft mechanism 015.

[0030] In addition, the bottom of the rotary table sliding seat 013 is provided with a mounting groove 0131, and a chain adjustment mechanism 2 is connected to the mounting groove 0131. A movable hole 0121 is opened in the middle of the rotary table guide rail 012. The movable hole 0121 is used for the movement of the chain adjustment mechanism 2, and a first sprocket 0122 is rotatably installed in the movable hole 0121. The first sprocket 0122 cooperates with the chain adjustment mechanism 2 for transmission. The chain adjustment mechanism 2 is used to adjust the rotary table sliding seat 013.

[0031] Furthermore, a second sprocket 0152 is rotatably mounted on the shaft of the spline shaft mechanism 015 on the same plane as the first sprocket 0122. The second sprocket 0152 is used to cooperate with the chain adjustment mechanism 2 for transmission. A connecting plate 0151 is provided on the shaft of the spline shaft mechanism 015 on one side of the second sprocket 0152. The connecting plate 0151 is used to connect with the connecting rod 4.

[0032] In addition, the chain adjustment mechanism 2 includes a second chain 23. One end of the second chain 23 is provided with a sliding seat connector 232 for installation in the mounting groove 0131. The other end of the second chain 23 is connected to a bushing 231. A bearing rotating head 211 is rotatably provided inside the bushing 231. The end of the bearing rotating head 211 away from the second chain 23 is connected to a first chain 21. The second chain 23 meshes with the teeth of the first sprocket 0122, and the first chain 21 meshes with the teeth of the second sprocket 0152. The other end of the first chain 21 away from the bearing rotating head 211 is connected to a counterweight 22. The counterweight 22 is suspended below the second sprocket 0152. The bearing rotating head 211, in conjunction with the bushing 231, can achieve different angles of deflection of the first chain 21 and the second chain 23 during chain drive.

[0033] Meanwhile, the eccentric wheel assembly 3 includes a connecting shaft 31. One end of the connecting shaft 31 is mounted on the output end of the motor 1, and the other end of the connecting shaft 31 is fitted with a second slider 32. An eccentric wheel 33 is slidably fitted on the second slider 32. The eccentric wheel 33 has a sliding cavity 331 for sliding engagement with the second slider 32. A bearing 34 is fitted on the outer wall of the eccentric wheel 33, and a mounting ring 35 is fitted on the outside of the bearing 34. A sliding hole 351 is opened on the outer wall of the mounting ring 35. The connecting rod 4 is slidably fitted at the sliding hole 351. The rotation of the second slider 32 drives the eccentric wheel 33 to slide in accordance with its eccentricity, thereby realizing the synchronous sliding of the outer safety ring 35, pushing out the connecting rod 8, and realizing the rotation of the connecting disc 0151 by 1-3 degrees. The key shaft mechanism 015 rotates synchronously by 1-3 degrees.

[0034] In this embodiment, when the grinding head component 05 is working, it is often necessary to make fine adjustments to the rotary table sliding seat 013 so that the rotary table sliding seat 013 can move a small distance on the rotary table guide rail 012. This can be achieved by the eccentric wheel adjustment mechanism 06 in conjunction with the spline shaft mechanism 015 and the chain adjustment mechanism 2.

[0035] During adjustment, motor 1 drives connecting shaft 31 to rotate at a certain angle, thereby rotating the second slider 32. When the second slider 32 rotates, the eccentric wheel 33, with its eccentric structure, rotates in conjunction with the sliding cavity 331, causing the eccentric wheel 33 to move laterally. This causes the mounting ring 35 to move the connecting rod 4. The connecting rod 4 pushes out, causing the connecting plate 0151, which is rotatably connected to it, to rotate by 1-3 degrees. After the connecting plate 0151 rotates by 1-3 degrees, the second sprocket 0152 deflects by 1-3 degrees. After the second sprocket 0152 rotates, the first chain 21 moves downward with the counterweight 22, causing the second chain 23 to pull the rotary table sliding seat 013 a small distance on the rotary table guide rail 012, thereby achieving fine adjustment of the grinding head assembly 05.

[0036] In this utility model, the eccentric wheel adjustment mechanism 06 is linked with the chain adjustment mechanism 2. The motor 1 drives the precise deflection of the grinding head position from 1 to 3°. The counterweight 22 balances the tension of the transmission chain, ensuring a smooth and efficient fine-tuning process that meets the requirements of high-precision machining.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A center hole grinding machine for grinding an eccentric wheel mechanism for forming adjustment, comprising a grinding machine frame (01), characterized in that, A guide rail (02) is vertically arranged on the front surface of the grinding machine frame (01). A tailstock device (03) is slidably fitted at the bottom of the guide rail (02). A three-center clamping unit (04) is slidably fitted on the guide rail (02) and above the tailstock device (03). A crossbeam (010) is horizontally arranged on the front surface of the grinding machine frame (01) above the guide rail (02). A first slider (011) is slidably fitted on the crossbeam (010). A rotary table guide rail (012) is installed on the first slider (011). A rotary table sliding seat (013) is slidably fitted on the rotary table guide rail (012). A grinding head component (05) is installed on the rotary table sliding seat (013). Inside the frame of the grinding machine (01) and on the back of the crossbeam (010), a lead screw mechanism (014) is rotatably provided. Below the lead screw mechanism (014), a spline shaft mechanism (015) is rotatably provided. Inside the frame of the grinding machine (01) and on the plate on one side of the spline shaft mechanism (015), a motor (1) is provided. An eccentric wheel adjustment mechanism (06) is assembled at the output end of the motor (1).

2. The eccentric wheel mechanism for grinding and adjusting a center hole on a grinding machine according to claim 1, characterized in that, The eccentric wheel adjustment mechanism (06) includes an eccentric wheel assembly (3) and a connecting rod (4). The eccentric wheel assembly (3) is mounted on the output end of the motor (1). One end of the connecting rod (4) is slidably fitted on the eccentric wheel assembly (3), and the other end is rotatably connected to the spline shaft mechanism (015).

3. The eccentric wheel mechanism for grinding and adjusting a center hole in a grinding machine according to claim 1, characterized in that, The bottom of the rotary table sliding seat (013) is provided with a mounting groove (0131), and a chain adjustment mechanism (2) is connected to the mounting groove (0131). A movable hole (0121) is opened in the middle of the rotary table guide rail (012). The movable hole (0121) is used for the movement of the chain adjustment mechanism (2), and a first sprocket (0122) is rotatably arranged in the movable hole (0121). The first sprocket (0122) cooperates with the chain adjustment mechanism (2) for transmission.

4. The eccentric wheel mechanism for grinding and forming adjustment on a center hole grinding machine according to claim 1, characterized in that, The spline shaft mechanism (015) has a second sprocket (0152) rotatably mounted on the shaft of the spline shaft mechanism (015) on the same plane as the first sprocket (0122). The second sprocket (0152) is used to cooperate with the chain adjustment mechanism (2) for transmission. A connecting plate (0151) is provided on the shaft of the spline shaft mechanism (015) on one side of the second sprocket (0152). The connecting plate (0151) is used to connect with the connecting rod (4).

5. The eccentric wheel mechanism for grinding and forming adjustment on a center hole grinding machine according to claim 4, characterized in that, The chain adjustment mechanism (2) includes a second chain (23), one end of which is provided with a sliding seat connector (232) for installation in the mounting groove (0131), and the other end of the second chain (23) is connected to a bushing (231). A bearing rotating head (211) is rotatably provided inside the bushing (231), and the end of the bearing rotating head (211) away from the second chain (23) is connected to a first chain (21).

6. The eccentric wheel mechanism for grinding and forming adjustment on a center hole grinding machine according to claim 5, characterized in that, The second chain (23) meshes with the teeth of the first sprocket (0122), the first chain (21) meshes with the teeth of the second sprocket (0152), and the other end of the first chain (21) away from the bearing rotating head (211) is connected to a counterweight (22), which is suspended below the second sprocket (0152).

7. A center hole grinding machine for grinding an eccentric wheel mechanism for forming adjustment, as described in claim 2, characterized in that, The eccentric wheel assembly (3) includes a connecting shaft (31). One end of the connecting shaft (31) is mounted on the output end of the motor (1). A second slider (32) is sleeved on the other end of the connecting shaft (31). An eccentric wheel (33) is slidably fitted on the second slider (32). A sliding cavity (331) for sliding fit of the second slider (32) is opened on the eccentric wheel (33). A bearing (34) is sleeved on the outer wall of the eccentric wheel (33). An installation ring (35) is sleeved on the outside of the bearing (34). A sliding hole (351) is opened on the outer wall of the installation ring (35). The connecting rod (4) is slidably fitted at the sliding hole (351).

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