Abrasive belt grinding machine with abrasive belt pressure detection function

Abstract

The application provides a belt sander with a belt pressure detection function, comprising a mounting frame, a workbench arranged in a horizontal direction is fixedly arranged on the mounting frame, a driving motor is arranged on the mounting frame, and an output end of the driving motor is in transmission connection with a polishing assembly; the polishing assembly comprises a belt, a polishing area is arranged on the belt, a clamping and fixing assembly for clamping a workpiece to be polished is arranged on one side of the polishing area, the clamping and fixing assembly is installed on the workbench through an installation assembly, and the clamping and fixing assembly can measure the contact pressure between the workpiece and the polishing area of the belt in real time during polishing of the workpiece to be polished. By obtaining the real contact pressure data in the grinding process, the deviation caused by only relying on the equipment setting value or the experience judgment can be avoided, the stability and consistency of the grinding pressure are beneficial to be maintained, the surface quality uneven problems are reduced, and the foundation support is provided for the quantitative setting of the process parameters, the equipment state evaluation, and the subsequent stable control or intelligent grinding.

Description

Technical Field

[0001] This invention relates to the field of belt grinding, specifically to a belt grinding machine with belt pressure detection function. Background Technology

[0002] Belt abrasive grinding, a common surface finishing method, is widely used in deburring, shaping, trimming, and surface finishing of metal parts, composite materials, and irregularly shaped workpieces. This method utilizes the relative motion between a high-speed abrasive belt and the workpiece surface, achieving material removal under a certain contact pressure. It features high processing efficiency, strong adaptability, and controllable surface quality, making it particularly suitable for processing workpieces with significant contour variations or complex surface shapes.

[0003] In actual production, the processing effect of belt grinding is not only related to parameters such as belt grit size and linear velocity, but also closely related to the contact pressure between the belt and the workpiece during the grinding process. The magnitude and stability of the contact pressure directly affect the material removal rate, the consistency of the workpiece surface texture, and whether processing defects such as overheating and vibration marks occur. However, belt grinding is a typical dynamic contact processing process. During the processing, factors such as belt wear, changes in the workpiece surface contour, and equipment vibration can all cause changes in the contact state, resulting in a certain fluctuation in the actual pressure acting on the workpiece surface.

[0004] In the process setting and debugging of existing belt abrasive equipment, it is usually necessary to rely on the theoretical parameter settings of the equipment control system or manual adjustments made by operators based on their processing experience. These methods primarily reflect the output state of the drive source or mechanism, and are difficult to directly characterize the actual stress on the contact area between the abrasive belt and the workpiece. When processing conditions change, operators often need to make adjustments through repeated trial grinding and experience-based judgment, which not only results in low debugging efficiency but also makes it difficult to ensure process consistency between different equipment and different batches.

[0005] Furthermore, in the absence of real-time acquisition of grinding contact pressure, the working status of the grinding head mechanism and clamping structure can usually only be indirectly evaluated through the processing results. This limits the precision of equipment performance evaluation to some extent and also brings inconvenience to the subsequent realization of stable control and intelligent adjustment of the grinding process.

[0006] Therefore, a belt grinding machine with belt pressure detection function is provided to address the above problems. Summary of the Invention

[0007] This invention addresses the problems of difficulty in accurately obtaining grinding contact pressure during existing belt grinding processes, reliance on experience for process debugging, and difficulty in ensuring processing stability and consistency by providing a belt grinding machine with belt pressure detection function.

[0008] The present invention solves the above-mentioned technical problems through the following technical solutions:

[0009] This invention provides a belt abrasive grinder with belt pressure detection function, including a mounting frame, on which a worktable arranged in a horizontal direction is fixedly mounted.

[0010] The mounting bracket is equipped with a drive motor, and the output end of the drive motor is connected to the grinding assembly for transmission.

[0011] The grinding assembly includes a sanding belt with a grinding area for grinding the workpiece. A clamping and fixing assembly for mounting and fixing the workpiece to be ground is provided on one side of the grinding area. The clamping and fixing assembly is mounted on the worktable via a mounting assembly.

[0012] During the grinding process, the clamping and fixing assembly can measure the contact pressure between the workpiece to be ground and the grinding area of ​​the abrasive belt in real time.

[0013] By measuring the pressure in the contact area between the workpiece and the abrasive belt in real time, this application can obtain accurate pressure data reflecting the actual working conditions during the grinding process, avoiding deviations caused by relying solely on equipment settings or experience. This real-time pressure feedback allows for timely detection of pressure fluctuations caused by factors such as abrasive belt wear, workpiece contour changes, or system vibration, providing a basis for adjusting process parameters.

[0014] Furthermore, continuous monitoring of contact pressure helps maintain pressure stability and consistency during the grinding process, reducing problems such as overheating, uneven surface texture, or decreased processing efficiency caused by abnormal pressure, thereby improving the surface quality and machining accuracy of the workpiece. Simultaneously, this pressure measurement method provides a data basis for the quantitative setting and repeated replication of grinding process parameters, helping to improve consistency between different equipment or different batches of processing.

[0015] In addition, the obtained contact pressure data can also be used to evaluate the working status of the grinding head mechanism and clamping structure, providing basic support for equipment debugging, performance evaluation and subsequent realization of closed-loop control or intelligent grinding, thereby improving the stability, reliability and automation level of belt grinding.

[0016] In this technical solution, the grinding assembly includes a drive wheel, a driven wheel, and a tension wheel. The drive wheel is fixed on the output end of the drive motor. The driven wheel and the tension wheel, which can rotate, are mounted on a mounting bracket on one side of the drive wheel. The same sanding belt is wound around the surfaces of the drive wheel, the driven wheel, and the tension wheel. The sanding belt located between the drive wheel and the driven wheel is distributed vertically and forms a grinding area.

[0017] The drive motor drives the drive wheel to rotate, which in turn drives the driven wheel and tension wheel to rotate through the tensioned sanding belt, thus making the sanding belt rotate and move smoothly.

[0018] The mounting frame consists of horizontal and vertical plates that are fixedly connected to each other. The drive motor is fixed on the horizontal plate, and the output end of the drive motor passes through the vertical plate. The tension wheel and the driven wheel are both mounted on the vertical plate.

[0019] In this technical solution, the clamping and fixing assembly can move in the X, Y and Z axis directions through the mounting assembly, and the clamping part on the clamping and fixing assembly can rotate 360° in the direction facing the grinding area while holding the workpiece to be ground.

[0020] In this technical solution, the installation assembly includes a first support plate, which is fixed to the workbench by a rod. A transverse moving part is provided on the first support plate, a longitudinal moving part is connected to the transverse moving part, a vertical moving part is fixed to the longitudinal moving part, and a clamping and fixing part is installed on the vertical moving part.

[0021] In this technical solution, the lateral moving part includes two guide horizontal shafts suspended on the first bearing plate. The two guide horizontal shafts are arranged in parallel, and each guide horizontal shaft is slidably connected to a sleeve. The four sleeves are respectively fixed at the bottom of the mounting plate. The mounting plate has a "T" shaped structure, and a longitudinal moving part is provided at the top of the mounting plate.

[0022] In this technical solution, the longitudinal moving part includes two parallel guide rails, which are perpendicular to the guide horizontal axis. Guide sliders are slidably connected to both guide rails, and the two guide sliders are fixed to the bottom of the vertical moving part.

[0023] The vertical moving part includes a supporting vertical plate, which is fixed on two guide sliders. A sliding through groove is provided on the supporting vertical plate, and the clamping and fixing assembly is slidably connected to the sliding through groove.

[0024] In this technical solution, the clamping and fixing assembly includes a sliding part slidably connected to the vertical moving part. The sliding part is connected to the clamping part through a universal joint. The clamping part rotates through the universal joint to adjust the angle of the clamping part and the workpiece to be polished.

[0025] It also includes a detection unit for detecting pressure.

[0026] The sliding part includes a sliding block, which is slidably connected to the vertical moving part. That is, the sliding block passes through the sliding groove on the bearing vertical plate. Multiple sliding plates are fixed on the sliding block. The sliding plates are divided into two groups, and the two groups of sliding plates are respectively slidably attached to the outer wall of the bearing vertical plate.

[0027] The sliding block has a handle fixed on one side away from the grinding area, and the other side is connected to the universal joint.

[0028] The universal connector includes a connecting ball, with a detection part provided on one side of the connecting ball away from the grinding area and the other side connected to the clamping part.

[0029] It also includes a connecting plate, the bottom of which is fixed to a placement plate. The connecting plate is set vertically, and the placement plate is set horizontally.

[0030] The top and bottom of the connecting ball are fitted with spherical limiting covers, and the connecting ball can rotate inside the limiting covers. The two limiting covers are fixedly connected to each other by a "C"-shaped fixing rod, which is slidably connected to the placement plate.

[0031] The detection unit includes a mounting shell for placing detection components. A force-bearing cover for connecting the detection end is installed on the outer wall of the mounting shell. The force-bearing cover has a spherical structure and can fit against the surface of the connecting ball. The connecting line between the center of the force-bearing cover and the center of the connecting ball is distributed in the horizontal direction.

[0032] A synchronizing rod is fixed to the surface of the connecting ball, and a gripping plate is fixed to the end of the synchronizing rod. By holding the gripping plate, the connecting ball is driven to rotate inside the limiting cover, thereby achieving 360° omnidirectional rotation adjustment.

[0033] The clamping and fixing assembly is moved along three axes by the handle. After moving to the grinding area, the connecting ball is rotated by the gripping plate, so that the clamped workpiece is at a suitable grinding angle relative to the sanding belt. Then, the workpiece is pushed to one side of the sanding belt until it is in contact with it, and then grinding begins. At this time, the force cover is in close contact with the surface of the connecting ball. The force is transmitted through the clamping part, the connecting ball and the force cover. The pressure is detected in real time by the components inside the mounting shell. The pressure is displayed on the display screen, which can be fixed in a suitable position on the worktable.

[0034] The components used for pressure detection and the display screen are both mature products in existing technology.

[0035] The pressure shield is fixed to the detection end of the detection unit. Pressing the pressure shield is equivalent to pressing the detection end, thereby detecting the pressure value.

[0036] Two sliding sleeves are fixed at the bottom of the fixed rod. The two sliding sleeves are slidably sleeved on the surfaces of two guide shafts. The guide shafts are installed on the placement plate in a direction perpendicular to the sanding belt surface. The sliding of the sliding sleeves on the surfaces of the guide shafts enables the connecting ball to slide on the placement plate.

[0037] The clamping part includes a second bearing plate, which is fixed to the connecting ball by a rod. A stationary clamping plate is fixed to the outer wall of the second bearing plate near the grinding area by a connecting rod. A movable clamping plate parallel to the stationary clamping plate is provided on one side of the stationary clamping plate. The movable clamping plate slides on the second bearing plate and its position after sliding can be fixed.

[0038] The movable clamping plate is slidably connected to two guide rails via two guide blocks that are fixedly connected to it, and the guide rails are fixed to the second bearing plate.

[0039] The screw has two ends mounted on the second bearing plate and can rotate. A threaded sleeve is fitted on the screw and engages with it. The threaded sleeve is fixed on the movable clamping plate. A handwheel is fixed to one end of the screw.

[0040] By rotating the screw with a handwheel, the screw drives the threaded sleeve on its surface to move through the thread, thereby moving the clamping plate.

[0041] Place the workpiece to be ground between the stationary clamping plate and the moving clamping plate, and rotate the screw to move the moving clamping plate to one side of the workpiece to be ground, thereby clamping the workpiece.

[0042] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0043] The positive and progressive effects of this invention are as follows:

[0044] By measuring the pressure in the contact area between the workpiece and the abrasive belt in real time, this application can obtain accurate pressure data reflecting the actual working conditions during the grinding process, thereby avoiding errors caused by relying solely on equipment settings or experience. This real-time pressure feedback allows for the timely detection of pressure fluctuations caused by factors such as abrasive belt wear, workpiece contour changes, or system vibration during grinding, providing a reliable basis for subsequent process adjustments.

[0045] Furthermore, continuous monitoring of contact pressure helps maintain pressure stability and consistency during the grinding process, reducing problems such as overheating, uneven surface texture, and decreased processing efficiency caused by excessive or insufficient pressure, thereby improving workpiece surface quality and machining accuracy. Simultaneously, this pressure measurement method provides a data basis for the quantitative setting and repeated replication of grinding process parameters, making it easier to maintain consistent process effects across different equipment or batches.

[0046] In addition, the real-time contact pressure data can be used to evaluate the working status of the grinding head mechanism and clamping structure, providing a basis for equipment debugging, performance evaluation and subsequent realization of closed-loop control or intelligent grinding, thereby improving the overall stability, reliability and automation level of belt grinding. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0048] Figure 2 For the present invention Figure 1 A structural diagram from another perspective;

[0049] Figure 3 This is a schematic diagram of the grinding component of the present invention;

[0050] Figure 4 This is a bottom view of the structure of the present invention 1;

[0051] Figure 5 This is a schematic diagram of the connection structure between the clamping and fixing component and the vertical moving part of the present invention;

[0052] Figure 6 For the present invention Figure 5 A structural diagram from another perspective;

[0053] Figure 7 This is a bottom view schematic diagram of the structure of the present invention 5;

[0054] Figure 8 This is a schematic diagram of the structure of the clamping and fixing component of the present invention;

[0055] Figure 9 For the present invention Figure 8 A structural diagram from another perspective;

[0056] Figure 10 This is a three-dimensional structural diagram of the clamping part of the present invention.

[0057] Explanation of reference numerals in the attached figures

[0058] 1. Mounting rack; 11. Workbench;

[0059] 2. Drive motor; 21. Drive wheel;

[0060] 3. Driven wheel;

[0061] 4. Tensioner;

[0062] 5. Sanding belt;

[0063] 6. Mounting components; 61. First bearing plate; 62. Mounting plate; 63. Guide horizontal shaft; 64. Guide rail; 65. Guide slider; 66. Auxiliary shaft; 67. Bearing vertical plate; 671. Sliding through groove;

[0064] 7. Clamping and fixing assembly; 71. Sliding part; 711. Sliding block; 712. Sliding plate; 72. Handle; 73. Connecting plate; 74. Mounting shell; 741. Force-bearing cover; 75. Universal connection part; 751. Connecting ball; 752. Limiting cover; 753. Fixing rod; 76. Placement plate; 761. Guide shaft; 762. Sliding sleeve; 77. Grip plate; 771. Synchronizing rod; 78. Clamping part; 781. Second bearing plate; 782. Static clamping plate; 783. Connecting rod; 784. Movable clamping plate; 785. Threaded sliding sleeve; 786. Screw; 787. Handwheel; 788. Guide slide rail; 7881. Guide block; 79. Placement part; 791. Temporary plate; 792. Slide plate; 793. Limiting tube; 794. Limiting rod. Detailed Implementation

[0065] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments.

[0066] like Figures 1-10 As shown, a belt abrasive grinder with belt pressure detection function includes a mounting frame 1, on which a worktable 11 arranged in a horizontal direction is fixedly mounted.

[0067] The mounting bracket 1 is equipped with a drive motor 2, and the output end of the drive motor 2 is connected to the grinding assembly for transmission.

[0068] The grinding assembly includes a sanding belt 5, which has a grinding area for grinding the workpiece. A clamping and fixing assembly 7 for mounting and fixing the workpiece to be ground is provided on one side of the grinding area. The clamping and fixing assembly 7 is mounted on the worktable 11 through the mounting assembly 6.

[0069] During the grinding process, the clamping and fixing component 7 can measure the contact pressure between the workpiece to be ground and the grinding area of ​​the sanding belt 5 in real time.

[0070] By measuring the pressure in the contact area between the workpiece and the abrasive belt 5 in real time, accurate pressure data reflecting the actual working conditions can be obtained during the grinding process. This avoids errors caused by relying solely on equipment settings or experience-based judgments and provides a basis for process adjustments. Continuous monitoring of the contact pressure helps maintain pressure stability and consistency during the grinding process, reducing problems such as overheating, uneven surface quality, or decreased processing efficiency caused by abnormal pressure, thereby improving the processing quality and consistency of the workpiece. At the same time, the obtained pressure data can also be used to evaluate the working status of the grinding head and clamping structure, providing basic support for equipment debugging and subsequent stable control or intelligent grinding.

[0071] Specifically, the grinding assembly includes a drive wheel 21, a driven wheel 3, and a tension wheel 4. The drive wheel 21 is fixed on the output end of the drive motor 2. The driven wheel 3 and the tension wheel 4, which can rotate, are mounted on the mounting bracket 1 on one side of the drive wheel 21. The same sanding belt 5 is wound around the surfaces of the drive wheel 21, the driven wheel 3, and the tension wheel 4. The sanding belt 5 located between the drive wheel 21 and the driven wheel 3 is distributed vertically and forms a grinding area.

[0072] The drive motor 2 drives the drive wheel 21 to rotate, which in turn drives the driven wheel 3 and the tension wheel 4 to rotate through the tensioned sand belt 5, thus making the sand belt 5 rotate and move smoothly.

[0073] Mounting frame 1 is composed of horizontal and vertical plates that are fixedly connected to each other. Drive motor 2 is fixed on the horizontal plate, and the output end of drive motor 2 passes through the vertical plate. Tensioning wheel 4 and driven wheel 3 are both mounted on the vertical plate.

[0074] Furthermore, the clamping and fixing assembly 7 can move in the X, Y and Z axis directions via the mounting assembly 6, and the clamping part 78 on the clamping and fixing assembly 7 can rotate 360° in the direction facing the grinding area while holding the workpiece to be polished.

[0075] The mounting assembly 6 includes a first support plate 61, which is fixed to the workbench 11 by a rod. The first support plate 61 is provided with a transverse moving part, a longitudinal moving part is connected to the transverse moving part, the longitudinal moving part is fixed to the longitudinal moving part, and a clamping and fixing part is installed on the longitudinal moving part.

[0076] Specifically, the lateral movement part includes two guide shafts 63 suspended on the first bearing plate 61. The two guide shafts 63 are arranged in parallel, and each guide shaft 63 is slidably connected with a sleeve. The four sleeves are fixed at the bottom of the mounting plate 62. The mounting plate 62 has a "T" shaped structure, and the top of the mounting plate 62 is provided with a longitudinal movement part.

[0077] Specifically, the longitudinal moving part includes two parallel guide rails 64, which are perpendicular to the guide horizontal axis 63. Guide sliders 65 are slidably connected to both guide rails 64, and the two guide sliders 65 are fixed to the bottom of the longitudinal moving part.

[0078] The vertical moving part includes a supporting vertical plate 67, which is fixed on two guide sliders 65. A sliding through groove 671 is provided on the supporting vertical plate 67, and the clamping and fixing assembly 7 is slidably connected to the sliding through groove 671.

[0079] The worktable 11 has a groove, and two auxiliary shafts 66 are fixed inside the groove. The auxiliary shafts 66 are arranged in parallel. Two sleeves are fixed on the bottom side wall of the mounting plate 62, and the two sleeves are slidably connected to the surfaces of the two auxiliary shafts 66 respectively.

[0080] like Figures 8-10 As shown, the clamping and fixing assembly 7 includes a sliding part 71 slidably connected to the vertical moving part. The sliding part 71 is connected to the clamping part 78 through a universal joint 75. The clamping part 78 rotates through the universal joint 75, thereby adjusting the angle of the clamping part 78 and the workpiece to be polished.

[0081] It also includes a detection unit for detecting pressure.

[0082] Specifically, the sliding part 71 includes a sliding block 711, which is slidably connected to the vertical moving part. That is, the sliding block 711 passes through the sliding groove 671 on the supporting vertical plate 67. Multiple sliding plates 712 are fixed on the sliding block 711. The sliding plates 712 are divided into two groups, and the two groups of sliding plates 712 are respectively slidably attached to the outer wall of the supporting vertical plate 67.

[0083] A handle 72 is fixed on the side of the sliding block 711 away from the grinding area, and the other side of the sliding block 711 is connected to the universal joint 75.

[0084] The universal connector 75 includes a connecting ball 751. A detection part is provided on the side of the connecting ball 751 away from the grinding area, and the other side is connected to the clamping part 78.

[0085] Specifically, it also includes a connecting plate 73, with a fixed placement plate 76 at the bottom of the connecting plate 73. The connecting plate 73 is set vertically, and the placement plate 76 is set horizontally.

[0086] The top and bottom of the connecting ball 751 are fitted with spherical limiting covers 752. The connecting ball 751 can rotate inside the limiting cover 752. The two limiting covers 752 are fixedly connected to each other by a "C"-shaped fixing rod 753. The fixing rod 753 is slidably connected to the placement plate 76.

[0087] The detection unit includes a mounting housing 74 for placing detection components. A force-bearing cover 741 for connecting the detection end is installed on the outer wall of the mounting housing 74. The force-bearing cover 741 has a spherical structure and can fit against the surface of the connecting ball 751. The connecting line between the center of the force-bearing cover 741 and the center of the connecting ball 751 is distributed in the horizontal direction.

[0088] A synchronizing rod 771 is fixed to the surface of the connecting ball 751, and a gripping plate 77 is fixed to the end of the synchronizing rod 771. By holding the gripping plate 77, the connecting ball 751 is driven to rotate inside the limiting cover 752, thereby achieving 360° universal rotation adjustment.

[0089] The clamping and fixing assembly 7 is moved in a three-axis direction by the handle 72. After moving to the grinding area, the connecting ball 751 is rotated by the grip plate 77, so that the clamped workpiece is at a suitable grinding angle relative to the sanding belt 5. Then the workpiece is pushed to one side of the sanding belt 5 until it fits, and then grinding begins. At this time, the force cover 741 is in close contact with the surface of the connecting ball 751. The force is transmitted through the clamping part 78, the connecting ball 751 and the force cover 741. The pressure is detected in real time by the components inside the mounting shell 74. The pressure is displayed on the display screen, which can be fixed in a suitable position on the worktable 11.

[0090] The components used for pressure detection and the display screen are both mature products in existing technology.

[0091] The force-bearing cover 741 is fixed on the detection end of the detection unit. Pressing the force-bearing cover 741 is equivalent to pressing the detection end, thereby detecting the pressure value.

[0092] Two sliding sleeves 762 are fixed at the bottom of the fixed rod 753. The two sliding sleeves 762 are slidably sleeved on the surfaces of the two guide shafts 761 respectively. The guide shafts 761 are installed on the placement plate 76 in a direction perpendicular to the surface of the sanding belt 5. The sliding of the connecting ball 751 on the placement plate 76 is realized by the sliding of the sliding sleeves 762 on the surface of the guide shafts 761.

[0093] Specifically, the clamping part 78 includes a second bearing plate 781, which is fixed to the connecting ball 751 by a rod. A stationary clamping plate 782 is fixed to the outer wall of the second bearing plate 781 near the grinding area by a connecting rod 783. A movable clamping plate 784 parallel to the stationary clamping plate 782 is provided on one side. The movable clamping plate 784 slides on the second bearing plate 781 and its position after sliding can be fixed.

[0094] The movable clamping plate 784 is slidably connected to two guide rails 788 via two guide blocks 7881 that are fixedly connected to it, and the guide rails 788 are fixed on the second bearing plate 781.

[0095] The screw 786 has two ends mounted on the second bearing plate 781 and can rotate. The screw 786 is fitted with a threaded sleeve 785 that meshes with it. The threaded sleeve 785 is fixed on the movable clamping plate 784. One end of the screw 786 is fixed with a handwheel 787.

[0096] By rotating the screw 786 through the handwheel 787, the screw 786 drives the threaded sleeve 785 on its surface to move through the thread, thereby moving the clamping plate 784.

[0097] The workpiece to be ground is placed between the stationary clamping plate 782 and the movable clamping plate 784. The screw 786 is rotated so that the movable clamping plate 784 moves to one side of the workpiece to be ground, thereby clamping the workpiece.

[0098] Preferred, such as Figure 8 As shown, it also includes a placement part 79 for temporarily placing the clamping and fixing assembly 7. The placement part 79 includes a temporary plate 791 slidably connected to the sliding through groove 671. The temporary plate 791 is arranged in the horizontal direction. Two slide plates 792 are fixed on the bottom side wall of the temporary plate 791. The two slide plates 792 slide against the outer wall of the supporting vertical plate 67. Each of the two slide plates 792 has a limiting tube 793 fixed on its surface, which is perpendicular to it. The limiting tube 793 is threaded with a limiting rod 794 inside. The end of the limiting rod 794 passes through the slide plate 792 and overlaps the supporting vertical plate 67.

[0099] The position of the placement part 79 is adjusted by sliding the temporary plate 791 on the surface of the support vertical plate 67. After adjustment, the limiting rod 794 is rotated, and under the push of the threaded engagement, the limiting rod 794 abuts against the surface of the support vertical plate 67, thereby fixing the position of the placement part 79. The sliding block 711 overlaps the top surface of the temporary plate 791, thereby temporarily placing the entire clamping and fixing assembly 7. When clamping or removing the workpiece by the clamping and fixing assembly 7, the sliding block 711 can be temporarily placed on the top surface of the temporary plate 791 for easy workpiece handling.

[0100] When adjusting the position of the placement part 79, the distance between the placement part 79 and the sliding block 711 should be sufficient to avoid the placement part 79 obstructing the grinding process.

[0101] This invention is not limited to the embodiments described above. Any changes in shape or structure shall fall within the protection scope of this invention. The protection scope of this invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of this invention, but all such changes and modifications shall fall within the protection scope of this invention.

Claims

1. A belt grinding machine with belt pressure detection function, including a mounting frame (1), on which a worktable (11) arranged in a horizontal direction is fixedly installed. The mounting bracket (1) is equipped with a drive motor (2), and the output end of the drive motor (2) is connected to the grinding assembly for transmission. The grinding assembly includes a sanding belt (5), which has a grinding area for grinding the workpiece. A clamping and fixing assembly (7) for mounting and fixing the workpiece to be ground is provided on one side of the grinding area. The clamping and fixing assembly (7) is mounted on the worktable (11) via a mounting assembly (6). The assembly is characterized by: During the grinding process, the clamping and fixing component (7) can measure the contact pressure between the workpiece to be ground and the grinding area of ​​the sanding belt (5) in real time. The clamping and fixing assembly (7) can move in the X-axis, Y-axis and Z-axis directions through the mounting assembly (6), and the clamping part (78) on the clamping and fixing assembly (7) can rotate 360° in the direction facing the grinding area while holding the workpiece to be polished. The clamping and fixing assembly (7) includes a sliding part (71) slidably connected to the vertical moving part. The sliding part (71) is connected to the clamping part (78) through a universal joint (75). The clamping part (78) rotates through the universal joint (75) to adjust the angle of the clamping part (78) and the workpiece to be polished. It also includes a detection unit for detecting pressure; The sliding part (71) includes a sliding block (711), which is slidably connected to the vertical moving part; The sliding block (711) has a handle (72) fixed on the side away from the grinding area, and the other side of the sliding block (711) is connected to the universal joint (75). The universal connector (75) includes a connecting ball (751), with a detection part on one side of the connecting ball (751) away from the grinding area and the other side connected to the clamping part (78); It also includes a connecting plate (73), the bottom of which is fixed to a placement plate (76), the connecting plate (73) is arranged vertically and the placement plate (76) is arranged horizontally; The top and bottom of the connecting ball (751) are fitted with spherical limiting covers (752), and the two limiting covers (752) are fixedly connected to each other by a "C"-shaped fixing rod (753), which is slidably connected to the placement plate (76). The detection unit includes a mounting shell (74) for placing detection components. A force-bearing cover (741) for connecting the detection end is installed on the outer wall of the mounting shell (74). The force-bearing cover (741) is a spherical structure that can fit against the surface of the connecting ball (751). The connecting line between the center of the force-bearing cover (741) and the center of the connecting ball (751) is distributed in the horizontal direction. The clamping part (78) includes a second bearing plate (781), which is fixed to the connecting ball (751) by a rod. A stationary clamping plate (782) is fixed to the outer wall of the second bearing plate (781) near the grinding area by a connecting rod (783). A movable clamping plate (784) parallel to the stationary clamping plate (782) is provided on one side. The movable clamping plate (784) slides on the second bearing plate (781) and its position after sliding can be fixed.

2. The belt grinding machine with belt pressure detection function as described in claim 1, characterized in that: The grinding assembly includes a drive wheel (21), a driven wheel (3), and a tension wheel (4). The drive wheel (21) is fixed on the output end of the drive motor (2). The driven wheel (3) and the tension wheel (4) are mounted on a mounting bracket (1) on one side of the drive wheel (21). The same sanding belt (5) is wound around the surfaces of the drive wheel (21), the driven wheel (3), and the tension wheel (4). The sanding belt (5) located between the drive wheel (21) and the driven wheel (3) is distributed vertically and forms a grinding area.

3. The belt grinding machine with belt pressure detection function as described in claim 1, characterized in that: The installation assembly (6) includes a first support plate (61), which is fixed to the workbench (11) by a rod. A transverse moving part is provided on the first support plate (61), a longitudinal moving part is connected to the transverse moving part, a vertical moving part is fixed on the longitudinal moving part, and a clamping and fixing part is installed on the vertical moving part.

4. The belt grinding machine with belt pressure detection function as described in claim 3, characterized in that: The lateral moving part includes two guide shafts (63) suspended on the first bearing plate (61). The two guide shafts (63) are arranged in parallel, and each guide shaft (63) is slidably connected with a sleeve. The four sleeves are fixed at the bottom of the mounting plate (62). The mounting plate (62) has a "T" shaped structure, and the top of the mounting plate (62) is provided with a longitudinal moving part. The longitudinal moving part includes two parallel guide rails (64), which are perpendicular to each other and the guide horizontal axis (63). Guide sliders (65) are slidably connected to both guide rails (64), and the two guide sliders (65) are fixed at the bottom of the vertical moving part. The vertical moving part includes a supporting vertical plate (67), which is fixed on two guide sliders (65). A sliding through groove (671) is provided on the supporting vertical plate (67), and the clamping and fixing assembly (7) is slidably connected to the sliding through groove (671).

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