Grinding tool and method for grinding the outer arc surface of a cambered surface pad of a common surface grinder

Abstract

This invention discloses a grinding fixture and method for grinding the outer arc surface of an arc pad on a conventional surface grinder. The fixture includes an arc base and a threaded rod. An arc steel plate is mounted on the arc base, and a groove is provided on the side of the arc base. The top surface of the groove is arc-shaped. The arc base, the top surface of the groove, and the arc steel plate are concentric. Side plates are installed on the sides of the arc base and the arc steel plate, and are connected and fixed to the arc steel plate. A through hole is opened at the bottom of the side plate, and a fixed shaft is installed in the through hole. A bearing and a retaining ring are sleeved on the fixed shaft. The bearing is slidably connected to the top surface of the groove. A limiting steel plate is fixed on one side of the arc steel plate along the tangential direction of the arc surface. A U-shaped groove with an upward opening is opened in the middle of the limiting steel plate. One end of the threaded rod is inserted into the U-shaped groove, and the other end is connected to a hand crank. The threaded rod is mounted on the limiting steel frame, and an internal threaded sleeve is installed between the threaded rod and the limiting steel frame. When using this invention to grind the outer arc surface of an arc pad, the grinding wheel width is not limited by the width of the workpiece being processed.

Description

Technical Field

[0001] This invention belongs to the field of grinding and manufacturing technology, and relates to the grinding tooling and processing method for the outer arc surface of the arc pad of a conventional surface grinder. Background Technology

[0002] Grinding external curved surfaces is common in the manufacturing industry. When machining external curved surfaces on a conventional surface grinder, the outer diameter of the grinding wheel is typically dressed to the external curved shape of the workpiece, using a forming method. However, because the width of the external curved surface of some parts exceeds the width of the grinding wheel, it is necessary to change the grinding wheel multiple times to grind according to the external curved shape of the part, making the machining process cumbersome. Furthermore, the repeated wheel changes during machining can create tool marks on the workpiece, affecting the machining quality. Summary of the Invention

[0003] One objective of this invention is to provide a grinding fixture for the outer arc surface of a conventional surface grinder, which solves the problem that the grinding wheel's width limits the workpiece width when grinding arc surfaces on conventional surface grinders, resulting in large grinding errors.

[0004] Another object of the present invention is to provide a grinding method for the outer arc surface of an arc pad on a conventional surface grinder.

[0005] The first technical solution adopted in this invention is a grinding fixture for the outer arc surface of an arc pad on a conventional surface grinder, comprising an arc base and a threaded rod. An arc steel plate is provided on the arc base, and a notch for clamping the arc pad is provided on the top surface of the arc steel plate. A groove is provided on the side of the arc base, and the top surface of the groove is an arc-shaped surface. The arc base, the top surface of the groove, and the arc of the arc steel plate are concentric. Side plates are installed on the sides of the arc base and the arc steel plate. The top of the side plate is connected and fixed to the arc steel plate. A through hole is opened at the bottom of the side plate, and a fixed shaft is installed in the through hole. A bearing and a shaft retaining ring are sleeved on the fixed shaft. The bearing is in rolling connection with the top surface of the groove. A limiting steel plate is fixed on one side of the arc steel plate along the tangential direction of the arc surface. A U-shaped groove with an upward opening is opened in the middle of the limiting steel plate. One end of the threaded rod is stuck in the U-shaped groove, and a baffle is installed at the end. The other end is connected to a hand crank. The threaded rod is mounted on the limiting steel frame, and an internal threaded sleeve is installed between the threaded rod and the limiting steel frame.

[0006] The side plate is fixed with a limit plate, which is connected to the side plate by bolts. A limit groove is opened on the fixed shaft, and the limit plate is embedded in the limit groove.

[0007] A protective plate is installed on the top of the U-shaped channel, and the protective plate is fixedly connected to the limiting steel plate by bolts.

[0008] The curved base consists of two identical steel frames, each with a curved steel plate. The two curved steel plates are connected and fixed by a connecting plate, which is symmetrically arranged with the limiting steel plate.

[0009] The internal threaded sleeve is fixed to the limiting steel frame by screws.

[0010] The second technical solution adopted in this invention is a grinding method for the outer arc surface of an arc pad on a conventional surface grinder, comprising the following steps: Step 1: Fix the grinding fixture for the outer arc surface of the arc pad on the grinding machine table, so that the threaded rod is perpendicular to the movement direction of the table. Step 2: Clamp the arc-shaped pad to be processed onto the grinding fixture; Step 3: Adjust the position of the grinding wheel on the grinding machine so that the grinding wheel is in close contact with the part of the arc pad to be ground. Then start the grinding wheel and the worktable. The grinding wheel will rotate and grind the outer arc of the arc pad along the direction of the worktable. When the grinding result meets the standard, turn off the grinding wheel and the worktable. Step 4: Rotate the hand crank, which drives the threaded rod to move back and forth, thereby moving the arc-shaped steel plate and arc-shaped pad in a direction perpendicular to the direction of movement of the worktable. Move the part of the arc-shaped pad to be ground to the bottom of the grinding wheel, restart the grinding wheel and the worktable, and grind the outer arc of the arc-shaped pad to be processed. Once the grinding result meets the standard, turn off the grinding wheel and the worktable. Step 5: Repeat step 4 to complete the grinding process of the entire arc-shaped pad.

[0011] In step 1, the grinding fixture for the outer arc surface of the arc pad of a conventional surface grinder is fixed on the worktable of the grinder, including fixing the arc base and the limiting steel frame horizontally on the worktable.

[0012] In step 2, the arc-shaped pad to be processed is clamped on the grinding fixture, including clamping and fixing the arc-shaped pad to be processed in the recess on the top surface of the arc-shaped steel plate.

[0013] The beneficial effect of this invention is that by setting an arc-shaped steel plate on an arc-shaped base, the top surface of the arc-shaped steel plate is provided with a notch for clamping the arc-shaped pad, and the side of the arc-shaped base is provided with a groove with the top surface of the groove being an arc-shaped surface. The arc-shaped base, the top surface of the groove, and the arc of the arc-shaped steel plate are concentric. A limiting steel plate is fixed on one side of the arc-shaped steel plate along the tangential direction of the arc surface. One end of a threaded rod is stuck in the U-shaped groove of the limiting steel plate. By driving the threaded rod, the arc-shaped steel plate is moved back and forth, causing relative movement between the arc-shaped steel plate and the arc-shaped base, thereby causing the arc-shaped pad to move. This allows the grinding wheel to grind the entire outer arc of the arc-shaped pad, thus solving the problem caused by the width of the outer arc surface of the part exceeding the width of the grinding wheel. Attached Figure Description

[0014] Figure 1This is a schematic diagram of the grinding fixture structure for the outer arc surface of the arc pad on a conventional surface grinder according to the present invention; Figure 2 This is a top view of the grinding fixture for the outer arc surface of the arc pad on a conventional surface grinder according to the present invention; Figure 3 yes Figure 1 Enlarged cross-sectional view of the middle section (AA); Figure 4 yes Figure 1 Enlarged cross-sectional view of the middle section of the BB.

[0015] In the diagram, 1. curved pad, 2. curved steel plate, 3. curved base, 4. limiting steel plate, 5. connecting plate, 6. protective plate, 7. limiting steel frame, 8. threaded rod, 9. hand crank, 10. side plate, 11. fixed shaft, 12. limiting plate, 13. bearing, 14. shaft retaining ring, 15. internal threaded sleeve, 16. grinding wheel. Detailed Implementation

[0016] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0017] Example 1 A grinding fixture for the outer arc surface of a conventional surface grinder, see [reference needed]. Figure 1 and Figure 2 It includes an arc-shaped base 3, a limiting steel frame 7, and a threaded rod 8. An arc-shaped steel plate 2 is installed on the arc-shaped base 3. The top surface of the arc-shaped steel plate 2 has a notch for clamping the arc-shaped pad 1. The side of the arc-shaped base 3 has a groove with an arc-shaped top surface. The arc of the arc-shaped base 3, the top surface of the groove, and the arc of the arc-shaped steel plate 2 are concentric. Side plates 10 are installed on the sides of the arc-shaped base 3 and the arc-shaped steel plate 2. The top of the side plates 10 are fixed to the arc-shaped steel plate 2 by bolts.

[0018] See Figure 3 The bottom of the side plate 10 has a through hole, and a fixed shaft 11 is installed in the through hole. A bearing 13 and a shaft retaining ring 14 are sleeved on the fixed shaft 11. The bearing 13 is in rolling connection with the top surface of the groove. A limiting steel plate 4 is fixed on one side of the arc surface 2 along the tangential direction of the arc surface. A U-shaped groove with an upward opening is opened in the middle of the limiting steel plate 4. One end of the threaded rod 8 is stuck in the U-shaped groove, and a baffle is installed at the end. The other end is connected to a hand crank 9. The threaded rod 8 is mounted on the limiting steel frame 7, and an internal threaded sleeve 15 is installed between the threaded rod 8 and the limiting steel frame 7.

[0019] A limiting plate 12 is fixed to the side of the side plate 10. The limiting plate 12 is fixed to the side plate 10 by bolts. A limiting groove is opened on the fixed shaft 11, and the limiting plate 12 is embedded in the limiting groove.

[0020] See Figure 4 A protective plate 6 is installed on the top of the U-shaped channel, and the protective plate 6 is fixedly connected to the limiting steel plate 4 by bolts.

[0021] Example 2 A grinding fixture for the outer arc surface of a conventional surface grinder includes an arc base 3, a limiting steel frame 7, and a threaded rod 8. The arc base 3 is composed of two steel frames with identical structures. Each steel frame is equipped with an arc steel plate 2. The two arc steel plates 2 are connected and fixed by a connecting plate 5. The connecting plate 5 and the limiting steel plate 4 are symmetrically arranged.

[0022] The top surface of the curved steel plate 2 has a notch for clamping the curved pad 1. The side surface of the curved base 3 has a groove with an arc-shaped top surface. The arc of the curved base 3, the top surface of the groove, and the arc of the curved steel plate 2 are concentric. Side plates 10 are installed on the sides of the curved base 3 and the curved steel plate 2. The top of the side plate 10 is fixed to the curved steel plate 2 by bolts. The bottom of the side plate 10 has a through hole, and a fixed shaft 11 is installed in the through hole. A bearing 13 and a shaft retaining ring 14 are sleeved on the fixed shaft 11. The bearing 13 is in rolling connection with the top surface of the groove.

[0023] A limiting steel plate 4 is fixed to one side of the curved steel plate 2 along the tangential direction of the curved surface. The limiting steel plate 4 has an upward-opening U-shaped groove in the middle. One end of the threaded rod 8 is stuck in the U-shaped groove, and a baffle is installed at the end. The other end is connected to a hand crank 9. The threaded rod 8 is mounted on the limiting steel frame 7, and an internal threaded sleeve 15 is installed between the threaded rod 8 and the limiting steel frame 7. The internal threaded sleeve 15 is fixed to the limiting steel frame 7 by screws. A protective plate 6 is installed on the top of the U-shaped groove, and the protective plate 6 is fixed to the limiting steel plate 4 by bolts.

[0024] A limiting plate 12 is fixed to the side of the side plate 10. The limiting plate 12 is fixed to the side plate 10 by bolts. A limiting groove is opened on the fixed shaft 11, and the limiting plate 12 is embedded in the limiting groove.

[0025] Example 3 A grinding method for the outer arc surface of an arc pad using a conventional surface grinder includes the following steps: Step 1: Fix the grinding fixture for the outer arc surface of the arc pad of the ordinary surface grinder on the worktable of the grinder, including fixing the arc base 3 and the limiting steel frame 7 horizontally on the worktable, so that the threaded rod 8 is perpendicular to the movement direction of the worktable; Step 2: Clamp the arc-shaped pad 1 to be processed on the grinding fixture, including clamping and fixing the arc-shaped pad 1 to be processed in the recesses on the top surfaces of the two arc-shaped steel plates 2. Step 3: Adjust the position of the grinding wheel 16 on the grinding machine so that the grinding wheel 16 is in close contact with the part to be ground on the arc surface pad 1. Then start the grinding wheel and the worktable. The grinding wheel rotates and grinds the outer arc of the arc surface pad along the direction of the worktable. When the grinding result meets the standard, turn off the grinding wheel and the worktable. Step 4: Rotate the hand crank 9. The hand crank 9 drives the threaded rod 8 to move back and forth, which in turn drives the arc steel plate 2 and the arc pad 1 to move in a direction perpendicular to the direction of movement of the worktable. Move the part of the arc pad 1 to be ground to the bottom of the grinding wheel, restart the grinding wheel and the worktable, and grind the outer arc part of the arc pad to be processed. When the grinding result meets the standard, turn off the grinding wheel and the worktable. Step 5: Repeat step 4 to complete the grinding process of the entire arc pad 1.

Claims

1. A grinding fixture for the outer arc surface of a conventional surface grinder, characterized in that, The system includes an arc-shaped base (3) and a threaded rod (8). An arc-shaped steel plate (2) is provided on the arc-shaped base (3). A notch for clamping an arc-shaped pad (1) is provided on the top surface of the arc-shaped steel plate (2). A groove is provided on the side of the arc-shaped base (3). The top surface of the groove is an arc-shaped surface. The arc of the arc-shaped base (3), the top surface of the groove, and the arc of the arc-shaped steel plate (2) are concentric. Side plates (10) are installed on the sides of the arc-shaped base (3) and the arc-shaped steel plate (2). The top of the side plate (10) is connected and fixed to the arc-shaped steel plate (2). A through hole is opened at the bottom of the side plate (10). A fixed shaft (11) is installed in the through hole. A bearing (13) and a shaft retaining ring (14) are sleeved on the fixed shaft (11). The bearing (13) is in rolling connection with the top surface of the groove. A limiting steel plate (4) is fixed on one side of the arc-shaped steel plate (2) along the tangential direction of the arc surface. A U-shaped groove with an upward opening is provided in the middle. One end of the threaded rod (8) is stuck in the U-shaped groove, and a baffle is installed at the end. The other end is connected to a hand crank (9). The threaded rod (8) is mounted on the limiting steel frame (7), and an internal threaded sleeve (15) is installed between it and the limiting steel frame (7).

2. The grinding fixture for the outer arc surface of the arc pad on a conventional surface grinder according to claim 1, characterized in that, The side plate (10) is fixed with a limiting plate (12). The limiting plate (12) and the side plate (10) are fixed by bolts. A limiting groove is opened on the fixed shaft (11), and the limiting plate (12) is embedded in the limiting groove.

3. The grinding fixture for the outer arc surface of the arc pad on a conventional surface grinder according to claim 1, characterized in that, A protective plate (6) is installed on the top of the U-shaped channel, and the protective plate (6) is fixedly connected to the limiting steel plate (4) by bolts.

4. The grinding fixture for the outer arc surface of the arc pad on a conventional surface grinder according to claim 1, characterized in that, The arc-shaped base (3) is composed of two steel frames with the same structure. Each steel frame is provided with an arc-shaped steel plate (2). The two arc-shaped steel plates (2) are connected and fixed by a connecting plate (5). The connecting plate (5) and the limiting steel plate (4) are symmetrically arranged.

5. The grinding fixture for the outer arc surface of the arc pad on a conventional surface grinder according to claim 1, characterized in that, The internal threaded sleeve (15) is fixed to the limiting steel frame (7) by screws.

6. A grinding method for the outer arc surface of an arc pad using a conventional surface grinder, characterized in that, Includes the following steps: Step 1: Fix the grinding fixture for the outer arc surface of the arc pad of the ordinary surface grinder as described in any one of claims 1-5 on the worktable of the grinder, so that the threaded rod (8) is perpendicular to the movement direction of the worktable; Step 2: Clamp the arc-shaped pad (1) to be processed onto the grinding fixture; Step 3: Adjust the position of the grinding wheel (16) on the grinding machine so that the grinding wheel (16) is in close contact with the part to be ground on the arc pad (1). Then start the grinding wheel (16) and the worktable. The grinding wheel (16) rotates and grinds the outer arc of the arc pad along the direction of the worktable. When the grinding result meets the standard, turn off the grinding wheel (16) and the worktable. Step 4: Rotate the hand crank (9). The hand crank (9) drives the threaded rod (8) to move back and forth, which in turn drives the arc steel plate (2) and the arc pad (1) to move in a direction perpendicular to the direction of movement of the worktable. Move the part of the arc pad (1) to be ground to the bottom of the grinding wheel (16). Restart the grinding wheel (16) and the worktable to grind the outer arc of the arc pad. When the grinding result meets the standard, turn off the grinding wheel (16) and the worktable. Step 5, repeat step 4 to complete the grinding process of the entire arc pad (1).

7. The grinding method for the outer arc surface of an arc pad on a conventional surface grinder according to claim 6, characterized in that, In step 1, the grinding fixture for the outer arc surface of the arc pad of the ordinary surface grinder as described in any one of claims 1-5 is fixed on the worktable of the grinder, including fixing the arc base (3) and the limiting steel frame (7) horizontally on the worktable.

8. The grinding method for the outer arc surface of an arc pad on a conventional surface grinder according to claim 6, characterized in that, In step 2, the arc pad (1) to be processed is clamped on the grinding tool, including clamping and fixing the arc pad (1) to be processed in the recess on the top surface of the arc steel plate (2).

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