Abrasive belt tension adjusting device and superfinishing machine provided with same

Abstract

The utility model relates to the technical field of superfinishing. In order to improve the superfinishing efficiency, the utility model provides an abrasive belt tension adjusting device, in a transmission mechanism, a transmission shaft is arranged in a transmission body, an adjusting end of the transmission shaft is provided with an adjusting pressure plate, and the adjusting pressure plate is positioned in an adjusting groove in the transmission body; the transmission end of the transmission shaft extends out of the transmission body, and a transmission gear is assembled at the transmission end of the transmission shaft; in the adjusting mechanism, a positioning cover is installed at a notch of an adjusting groove, a friction plate is attached to an adjusting pressing disc, an adjusting piston is located between the positioning cover and the friction plate, and an adjusting elastic piece is clamped between the adjusting piston and the positioning cover. An adjusting hole and an exhaust hole are formed in the side wall of the adjusting groove, the adjusting hole is communicated with an adjusting gap between the positioning cover and the adjusting piston, and the exhaust hole is communicated with the adjusting groove at the position close to the groove bottom of the adjusting groove. The abrasive belt tension adjusting device is simple and convenient to adjust, and effectively improves the machining efficiency and the machining effect of a superfinishing machine.

Description

Technical Field

[0001] The utility model relates to the technical field of super finishing, in particular to a sanding belt tensioning force regulating device used in super finishing. Background Art

[0002] In the process of superfinishing, it is usually necessary to use a sanding belt for polishing. During the polishing process, the tension of the sanding belt will change. In order to complete the polishing process, the tension of the sanding belt needs to be adjusted as needed. However, the existing superfinishing machine cannot adjust the tension of the sanding belt online, which affects the efficiency and effect of superfinishing. Utility Model Content

[0003] In order to improve the efficiency of super finishing, the utility model proposes a belt tensioning force adjusting device, which includes a transmission mechanism and an adjusting mechanism, wherein the transmission mechanism includes a transmission body and a transmission shaft, wherein the transmission shaft is installed in the transmission body, and an adjusting pressure plate is provided at the adjusting end of the transmission shaft, and the adjusting pressure plate is located in an adjusting groove in the transmission body; the transmission end of the transmission shaft extends out of the transmission body, and a transmission gear is mounted on the transmission end of the transmission shaft;

[0004] The adjusting mechanism comprises a positioning cover, an adjusting piston and a friction plate, wherein the positioning cover is installed at the notch of the adjusting groove, the friction plate is abutted against the adjusting pressure plate, the adjusting piston is located between the positioning cover and the friction plate, and an adjusting elastic member is sandwiched between the adjusting piston and the positioning cover;

[0005] An adjusting hole and an exhaust hole are provided on the side wall of the adjusting groove. The adjusting hole is communicated with the adjusting gap between the positioning cover and the adjusting piston. The exhaust hole is communicated with the adjusting groove near the bottom of the adjusting groove.

[0006] During the operation of the sand belt tensioning force adjusting device of the utility model, the adjusting elastic member is used to push the adjusting piston so that the adjusting piston is pressed against the friction plate, thereby applying friction pressure to the transmission shaft through the friction plate, and then outputting the basic torque through the transmission gear, so that the sand belt transmission mechanism in the superfinishing machine drives the sand belt transmission; when the basic torque output by the transmission gear is insufficient, high-pressure air can be introduced into the adjustment gap between the positioning cover and the adjusting piston through the adjustment hole, and the introduced high-pressure air can push the adjusting piston to move toward the friction plate, thereby increasing the pressure applied by the adjusting piston to the friction plate, and then increasing the friction pressure applied by the friction plate to the transmission shaft, that is, increasing the torque output by the transmission gear, thereby tensioning the sand belt. It can be seen that the sand belt tensioning force adjusting device of the utility model can complete the tensioning of the sand belt by introducing high-pressure air into the adjustment gap through the adjustment hole as needed, and complete the tension adjustment of the sand belt, and the adjustment is simple and convenient, which can effectively improve the superfinishing efficiency and processing effect of the superfinishing machine.

[0007] Preferably, the positioning cover and the adjusting piston are provided with positioning grooves for installing the adjusting elastic member. In this way, by providing positioning grooves on the positioning cover and the adjusting piston to install the adjusting elastic member, it is possible to avoid the adjusting elastic member from moving out of position during the operation of the sand belt tension adjusting device of the utility model, thereby affecting the adjusting effect of the sand belt tension. Furthermore, at least two positioning grooves are provided on the positioning cover, and the positioning grooves are evenly distributed on the same circumference around the central axis of the positioning cover. In this way, at least two adjusting elastic members can be provided between the positioning cover and the adjusting piston, and the adjusting elastic members are evenly distributed on the same circumference around the central axis of the positioning cover, thereby avoiding the adjusting piston from shifting and dislocating due to uneven force, thereby affecting the adjusting effect of the sand belt tension.

[0008] Preferably, the positioning cover is provided with a guide slot, the regulating piston is provided with a guide shaft, and one end of the guide shaft facing the positioning cover is inserted into the guide slot. In this way, when the regulating piston is pushed by the regulating elastic member and the high-pressure air, the guide shaft can be used to guide the moving direction of the regulating piston to avoid the displacement and misalignment of the regulating piston during the force movement, thereby affecting the adjustment effect of the tensioning force of the sand belt. Furthermore, at least two guide slots are provided on the positioning cover, and the guide slots are evenly distributed on the same circumference around the central axis of the positioning cover. In this way, the regulating piston is guided by at least two guide shafts during the force movement, which can further improve the guiding effect.

[0009] Preferably, a proportional valve is provided at the adjusting hole. In this way, a proportional valve is provided at the adjusting hole so that the pressure of the high-pressure air introduced into the adjusting gap can be adjusted during use, and the torque output by the sand belt tension adjusting device of the utility model can be adjusted online, so that the tension of the sand belt can be adjusted and controlled in real time. Furthermore, a quick-insert tube is provided between the adjusting hole and the proportional valve. In this way, when installing or replacing the proportional valve, the quick-insert tube can be quickly inserted into the adjusting hole or quickly pulled out from the adjusting hole, and the installation and replacement are quick and convenient.

[0010] Preferably, sealing rings are provided on both sides of the adjustment gap. Thus, by providing sealing rings on both sides of the adjustment gap, the sealing performance of the adjustment gap can be improved, and the leakage of high-pressure air entering the adjustment gap through the adjustment hole can be avoided, thereby improving the adjustment effect of the sanding belt tension adjustment device of the utility model.

[0011] Preferably, the positioning cover is fixed on the transmission body by positioning bolts. In this way, the positioning cover is fixed to the transmission body by positioning bolts, which is simple and convenient to install.

[0012] In addition, the utility model also proposes a superfinishing machine, in which any one of the above-mentioned abrasive belt tension adjustment devices is installed. In this way, the abrasive belt tension adjustment device is installed in the superfinishing machine, and during the superfinishing process, the abrasive belt tension adjustment device can be used to adjust the tension of the polishing abrasive belt, thereby improving the superfinishing efficiency and processing effect of the superfinishing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural schematic diagram of the sand belt tensioning force adjustment device of the utility model;

[0014] Figure 2 for Figure 1 AA cross-sectional structure diagram in;

[0015] Figure 3 for Figure 1 Schematic diagram of the BB cross-sectional structure. DETAILED DESCRIPTION

[0016] Next, combine Figures 1 to 3 , the utility model of the abrasive belt tensioning force regulating device and the superfinishing machine equipped with the abrasive belt tensioning force regulating device are described in detail.

[0017] like Figures 1 to 3 As shown, the belt tensioning force adjusting device of the utility model includes a transmission mechanism and an adjusting mechanism. The transmission mechanism includes a transmission body 11 and a transmission shaft 12, the transmission shaft 12 is installed in the transmission body 11, and the adjusting end of the transmission shaft 12 is provided with an adjusting pressure plate 121, and the adjusting pressure plate 121 is located in the adjusting groove 111 in the transmission body 11; the transmission end of the transmission shaft 12 extends out of the transmission body 11, and a transmission gear 13 is assembled on the transmission end of the transmission shaft 12. Preferably, a bearing 14 is sleeved on the transmission shaft 12, and the bearing 14 is clamped in the transmission body 11 and close to the two ends of the transmission shaft 12. In this way, during the operation of the belt tensioning force adjusting device of the utility model, the transmission shaft 12 drives the transmission gear 13 to rotate around the central axis of the transmission shaft 12.

[0018] like Figures 1 to 3As shown, the adjustment mechanism includes a positioning cover 21, an adjustment piston 22 and a friction plate 23. The positioning cover 21 is installed at the notch of the adjustment groove 111 on the transmission body 11. The friction plate 23 is against the adjustment pressure plate 121 of the transmission shaft 12. The adjustment piston 22 is located between the positioning cover 21 and the friction plate 23, and an adjustment elastic member 24 is sandwiched between the adjustment piston 22 and the positioning cover 21. Preferably, the positioning cover 21 and the adjustment piston 22 are provided with positioning grooves (not shown in the figure) for installing the adjustment elastic member 24. In this way, the positioning grooves are provided on the positioning cover 21 and the adjustment piston 22 to install the adjustment elastic member 24, which can prevent the adjustment elastic member 24 from moving and dislocating during the operation of the sand belt tension adjustment device of the utility model, thereby affecting the adjustment effect of the sand belt tension. Preferably, at least two positioning grooves are provided on the positioning cover 21, and the positioning grooves are evenly distributed on the same circumference around the central axis of the positioning cover 21. In this way, at least two adjusting elastic members 24 can be arranged between the positioning cover 21 and the adjusting piston 22, and the adjusting elastic members 24 are evenly distributed on the same circumference around the central axis of the positioning cover 21, which can prevent the adjusting piston 22 from being offset and misaligned due to uneven force, thereby affecting the adjustment effect of the tensioning force of the sand belt. Preferably, a guide slot 211 is arranged on the positioning cover 21, and a guide shaft 25 is arranged on the adjusting piston 22, and the end of the guide shaft 25 facing the positioning cover 21 is inserted into the guide slot 211. In this way, when the adjusting elastic member 24 and high-pressure air are used to push the adjusting piston 22, the guide shaft 25 can be used to guide the moving direction of the adjusting piston 22, thereby preventing the adjusting piston 22 from being offset and misaligned during the process of being moved by force, thereby affecting the adjustment effect of the tensioning force of the sand belt. Preferably, at least two guide slots 211 are arranged on the positioning cover 21, and the guide slots 211 are evenly distributed on the same circumference around the central axis of the positioning cover 21. In this way, the adjusting piston 22 is guided by at least two guide shafts 25 during the force movement process, which can further improve the guiding effect. Preferably, the positioning cover 21 is fixed to the transmission body 11 by positioning bolts (not shown in the figure). In this way, the positioning cover 21 is fixed to the transmission body 11 by positioning bolts, and the installation is simple and convenient. Preferably, a spring is used as the adjusting elastic member 24, and the material selection is simple and convenient.

[0019] like Figures 1 to 3As shown, an adjusting hole 112 and an exhaust hole 113 are provided on the side wall of the adjusting groove 111 on the transmission body 11. The adjusting hole 112 is connected to the adjusting gap (not shown in the figure) between the positioning cover 21 and the adjusting piston 22, and the exhaust hole 113 is connected to the adjusting groove 111 near the bottom of the adjusting groove 111. Preferably, a proportional valve (not shown in the figure) is provided at the adjusting hole 112. In this way, a proportional valve is provided at the adjusting hole 112 to adjust the pressure of the high-pressure air introduced into the adjusting gap during use, so that the torque output by the sand belt tension adjustment device of the utility model can be adjusted online, so that the tension of the sand belt can be adjusted and controlled in real time. Preferably, a quick-insert tube 26 is provided between the adjusting hole 112 and the proportional valve. In this way, when installing or replacing the proportional valve, the quick-insert tube 26 can be quickly inserted into the adjusting hole 112 or quickly pulled out from the adjusting hole 112, and the installation and replacement are quick and convenient. Preferably, sealing rings are provided on both sides of the adjusting gap. In this way, by arranging sealing rings on both sides of the adjustment gap, the sealing of the adjustment gap can be improved, the leakage of high-pressure air entering the adjustment gap through the adjustment hole 112 can be avoided, and the adjustment effect of the belt tension adjustment device of the utility model can be improved. Preferably, the sealing ring located between the adjustment gap and the positioning cover 21 is a first sealing ring 31, and the first sealing ring 31 is clamped in the clamping groove (not shown in the figure) formed by the notch of the adjustment groove 111 and the positioning cover 21; the sealing ring located between the adjustment gap and the friction plate 23 is a second sealing ring 32, and a sealing ring groove (not shown in the figure) for installing the second sealing ring 32 is provided on the outer side wall of the adjustment piston 22. In this way, the first sealing ring 31 is installed in the clamping groove formed by the notch of the positioning cover 21 and the adjustment groove 111, and the second sealing ring 32 is installed in the sealing ring groove on the adjustment piston 22, which can effectively improve the sealing of the adjustment gap.

[0020] During the operation of the sand belt tensioning force adjusting device of the utility model, the adjusting elastic member is used to push the adjusting piston so that the adjusting piston is pressed against the friction plate, thereby applying friction pressure to the transmission shaft through the friction plate, and then outputting the basic torque through the transmission gear, so that the sand belt transmission mechanism in the superfinishing machine drives the sand belt transmission; when the basic torque output by the transmission gear is insufficient, high-pressure air can be introduced into the adjustment gap between the positioning cover and the adjusting piston through the adjustment hole, and the introduced high-pressure air can push the adjusting piston to move toward the friction plate, thereby increasing the pressure applied by the adjusting piston to the friction plate, and then increasing the friction pressure applied by the friction plate to the transmission shaft, that is, increasing the torque output by the transmission gear, thereby tensioning the sand belt. It can be seen that the sand belt tensioning force adjusting device of the utility model can complete the tensioning of the sand belt by introducing high-pressure air into the adjustment gap through the adjustment hole as needed, and complete the tension adjustment of the sand belt, and the adjustment is simple and convenient, which can effectively improve the superfinishing efficiency and processing effect of the superfinishing machine.

[0021] In addition, after the above-mentioned belt tension adjustment device is assembled in the superfinishing machine, the belt tension adjustment device can be used to adjust the tension of the polishing belt during the superfinishing process, thereby improving the superfinishing efficiency and processing effect of the superfinishing machine.

Claims

1. A belt tension adjustment device, characterized in that: The belt tensioning force adjusting device comprises a transmission mechanism and an adjusting mechanism, wherein the transmission mechanism comprises a transmission body and a transmission shaft, wherein the transmission shaft is installed in the transmission body, and an adjusting pressure plate is provided at the adjusting end of the transmission shaft, and the adjusting pressure plate is located in an adjusting groove in the transmission body; the transmission end of the transmission shaft extends out of the transmission body, and a transmission gear is mounted on the transmission end of the transmission shaft; The adjusting mechanism comprises a positioning cover, an adjusting piston and a friction plate, wherein the positioning cover is installed at the notch of the adjusting groove, the friction plate is abutted against the adjusting pressure plate, the adjusting piston is located between the positioning cover and the friction plate, and an adjusting elastic member is sandwiched between the adjusting piston and the positioning cover; An adjusting hole and an exhaust hole are provided on the side wall of the adjusting groove. The adjusting hole is communicated with the adjusting gap between the positioning cover and the adjusting piston. The exhaust hole is communicated with the adjusting groove near the bottom of the adjusting groove.

2. The abrasive belt tension adjustment device according to claim 1, characterized in that: The positioning cover and the adjusting piston are provided with positioning grooves for installing the adjusting elastic member.

3. The belt tension adjustment device according to claim 2, characterized in that: At least two positioning grooves are arranged on the positioning cover, and the positioning grooves are evenly distributed on the same circumference around the central axis of the positioning cover.

4. The abrasive belt tensioning force adjusting device according to claim 2 or 3, characterized in that: The positioning cover is provided with a guide slot hole, the regulating piston is provided with a guide shaft, and one end of the guide shaft facing the positioning cover is inserted into the guide slot hole.

5. The abrasive belt tension adjustment device according to claim 4, characterized in that: At least two guide slots are provided on the positioning cover, and the guide slots are evenly distributed on the same circumference around the central axis of the positioning cover.

6. The abrasive belt tension adjustment device according to any one of claims 1 to 3, characterized in that: A proportional valve is arranged at the regulating hole.

7. The abrasive belt tension adjustment device according to claim 6, characterized in that: A quick-insert tube is arranged between the regulating hole and the proportional valve.

8. The abrasive belt tension adjustment device according to any one of claims 1 to 3, characterized in that: Sealing rings are arranged on both sides of the adjustment gap.

9. The abrasive belt tension adjustment device according to any one of claims 1 to 3, characterized in that: The positioning cover is fixed on the transmission body by means of positioning bolts.

10. A superfinishing machine, characterized in that: The superfinishing machine is equipped with the abrasive belt tensioning force regulating device described in any one of claims 1 to 9.

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