Plate floating grinding device

Abstract

The utility model discloses a plate floating grinding device which comprises a grinding mechanism and a displacement device used for driving the grinding mechanism to move horizontally relative to a plate workpiece. The grinding mechanism comprises a grinding head, a swing arm, a floating amount detection mechanism, a grinding wheel counter weight and a lifting mechanism, the swing arm is hinged to the displacement device, the grinding head is arranged at one end of the swing arm, a grinding wheel is installed on the grinding head, the floating amount detection mechanism and the grinding wheel counter weight are arranged at the other end of the swing arm, and the floating amount detection mechanism comprises a transverse pin; one end of the lifting mechanism is hinged to the displacement device, the other end of the lifting mechanism is provided with a kidney-shaped hole extending in the stroke direction of the lifting mechanism, and the transverse pin is installed on the swing arm and located in the kidney-shaped hole. The lifting mechanism can stretch out and draw back so that the transverse pin can move in the kidney-shaped hole in the length direction in the grinding process of the grinding wheel, and when the grinding wheel is close to the edge of the plate workpiece, the lifting mechanism shrinks so that the hole wall of the upper end of the kidney-shaped hole can abut against the transverse pin to keep the height of the grinding head unchanged. While the cost is controlled, stable performance and efficient operation are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding equipment, in particular to a floating grinding device for plate materials. Background Art

[0002] During the rolling or application process of steel plates, the presence of impurities such as oxide scale or rust on the surface will seriously affect the appearance and quality of the finished product, and the surface needs to be cleaned. Usually, a plate grinding device is used to treat the surface of the steel plate.

[0003] There are two main types of existing sheet metal grinding devices. One is relatively simple in structure, usually in the form of a hand-pushed trolley, which simply relies on the relatively light weight of the grinding head to press the grinding wheel down so that the grinding wheel abuts against the sheet metal surface for grinding. The pressing force is small, the travel speed is slow, and the operating efficiency is low. When the grinding wheel leaves the sheet metal surface horizontally, the height will change significantly, such as Figure 7 As shown, the grinding wheel will inevitably touch the edge of the sheet, which can easily cause damage to the grinding wheel, and the original right angle of the sheet edge will produce unnecessary rounded corners due to contact with the grinding wheel. At the same time, the contact between the grinding wheel and the edge of the sheet will cause great noise pollution.

[0004] The structure of the other type of sheet metal grinding device is relatively complex. It uses a hydraulic cylinder connected to the grinding head, in conjunction with a series of sensor elements such as piezoelectric sensors and displacement sensors, to adjust the pressure applied to the grinding wheel in real time as needed. The drive mechanism uses a variable frequency speed regulation system and a supporting hydraulic closed-loop control system to achieve constant power grinding. Although it can overcome the defects of the previous structure, the cost of the hydraulic system and the electronic control system will increase significantly, and due to the increase in precision components, the equipment failure rate will increase significantly, and the maintenance cost will be high. Summary of the invention

[0005] The utility model provides a floating grinding device for plate materials, which ensures stable performance and efficient operation of the floating grinding device for plate materials while reasonably controlling costs.

[0006] In order to achieve the above purpose, the technical solution of the utility model is:

[0007] A sheet material floating grinding device comprises: a grinding mechanism and a displacement device for driving the grinding mechanism to translate relative to a sheet material workpiece;

[0008] The grinding mechanism comprises a grinding head, a swing arm, a floating amount detection mechanism, a grinding wheel counterweight and a lifting mechanism, wherein the swing arm is hinged on the displacement device, a grinding head is provided at one end of the swing arm, a grinding wheel is mounted on the grinding head, a floating amount detection mechanism and a grinding wheel counterweight are provided at the other end of the swing arm, and the floating amount detection mechanism comprises a cross pin;

[0009] One end of the lifting mechanism is hinged to the displacement device, and the other end of the lifting mechanism is provided with a waist-shaped hole extending along the travel direction of the lifting mechanism, and the transverse pin is installed on the swing arm and is located in the waist-shaped hole;

[0010] The lifting mechanism can be extended and retracted so that when the grinding wheel is grinding a sheet workpiece, the cross pin can move in the waist-shaped hole along the length direction of the waist-shaped hole, and when the grinding wheel approaches the edge of the sheet workpiece, the lifting mechanism contracts so that the upper end wall of the waist-shaped hole abuts against the cross pin to keep the height of the grinding head unchanged.

[0011] Furthermore, the floating amount detection mechanism further includes a displacement sensor, and the displacement sensor is arranged at one end of the lifting mechanism away from the displacement device;

[0012] The lifting mechanism can be telescopically adjusted according to the position of the transverse pin in the length direction of the waist-shaped hole detected by the displacement sensor, so that the transverse pin is located in a set area in the length direction of the waist-shaped hole.

[0013] Furthermore, the floating amount detection mechanism also includes a sensor bracket, a magnetic ring and a guide sleeve;

[0014] The sensor bracket is fixed to one end of the lifting mechanism provided with a waist-shaped hole, and the displacement sensor is fixed to the sensor bracket;

[0015] A guide sleeve is provided at one end of the transverse pin close to the displacement sensor, the axis of the guide sleeve intersects the axis of the transverse pin perpendicularly, and the guide sleeve can rotate relative to the transverse pin;

[0016] The guide sleeve and the magnetic ring are coaxially arranged, and the measuring rod of the displacement sensor is inserted into the magnetic ring and the guide sleeve.

[0017] Furthermore, the grinding mechanism also includes a grinding head motor, which is installed on the displacement device and can drive the grinding wheel to rotate.

[0018] Furthermore, the grinding head includes a grinding head box and a grinding head shaft;

[0019] One end of the grinding head box is provided with a grinding head hinge shaft hinged to the swing arm, and the other end of the grinding head box is rotatably connected to the grinding head shaft;

[0020] The grinding head motor can drive the grinding head shaft to rotate, and the grinding wheel is installed on the grinding head shaft.

[0021] Further, it also includes a V-belt pulley and a V-belt;

[0022] V-belt pulleys are installed on the grinding head shaft and the output shaft of the grinding head motor, and the V-belt is sleeved on the two V-belt pulleys.

[0023] Furthermore, it also includes a V-belt tensioning top screw;

[0024] The V-belt tensioning top screw is arranged on the swing arm, and the V-belt tensioning top screw can abut against the grinding head box.

[0025] Further, the displacement device includes a transverse movement trolley, a transverse movement track, a longitudinal movement trolley and a longitudinal movement track;

[0026] The longitudinal movement track is arranged along a first horizontal direction, and the longitudinal movement trolley is installed on the longitudinal movement track;

[0027] The transverse track is arranged along the second horizontal direction, the transverse track is arranged on the longitudinal moving trolley, the transverse trolley is installed on the transverse track, and the grinding mechanism is installed on the transverse trolley.

[0028] Furthermore, a trolley counterweight is fixed to one end of the transverse trolley away from the grinding head.

[0029] Furthermore, it also includes a grinding wheel seat and a grinding wheel pressure cover, the grinding wheel seat, grinding wheel and grinding wheel pressure cover are sequentially sleeved on the grinding head shaft, the grinding wheel seat is fixed on the grinding head shaft, the grinding wheel pressure cover is detachably connected to the grinding wheel seat, and the grinding wheel pressure cover presses the grinding wheel onto the grinding wheel seat.

[0030] Beneficial effects:

[0031] The utility model provides a floating plate grinding device, which provides a larger pressing force for the grinding wheel through a heavier grinding head, and adjusts the pressing force of the grinding wheel by increasing or decreasing the weight of the grinding wheel counterweight. Compared with the existing plate grinding device, it does not need to use a complex electric control system and hydraulic system to control the pressing force of the grinding wheel. At the same time, the displacement device drives the grinding mechanism to move, thereby increasing the walking speed and thus improving the working efficiency.

[0032] When the grinding wheel is grinding the sheet workpiece, the lifting mechanism is extended and retracted so that the cross pin on the swing arm can move in the waist-shaped hole along the length direction of the waist-shaped hole, that is, during the grinding process, the lifting mechanism is extended and retracted so that the cross pin floats relative to the waist-shaped hole, so that the cross pin has an available floating amount during the grinding process, so that the swing arm has an available floating amount, and then the grinding head has an available floating amount, so that the grinding wheel can follow the surface of the sheet workpiece for floating grinding, thereby ensuring the grinding effect of the sheet surface;

[0033] When the grinding wheel moves to the point where it is about to exceed the width of the sheet workpiece, the lifting mechanism is extended and retracted to make the cross pin abut against the upper wall of the waist-shaped hole, so that the height of the grinding head remains unchanged, the grinding wheel no longer performs floating grinding, and the grinding wheel continues to grind the sheet workpiece at the current height, effectively preventing the grinding wheel from touching the edge of the sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 The structure diagram of a floating grinding device for sheet metal disclosed in the utility model is shown in FIG. Figure 1 ;

[0036] Figure 2 The structure diagram of a floating grinding device for sheet metal disclosed in the utility model is shown in FIG. Figure 2 ;

[0037] Figure 3 It is a top view of a sheet metal floating grinding device disclosed in the utility model without the longitudinal movement trolley and the longitudinal movement track;

[0038] Figure 4 It is a schematic diagram of a floating amount detection mechanism of a sheet material floating grinding device disclosed in the utility model;

[0039] Figure 5 for Figure 2 A magnified image of point A;

[0040] Figure 6 A grinding track diagram of a sheet material floating grinding device disclosed in the utility model;

[0041] Figure 7 A schematic diagram of a grinding wheel of a conventional sheet material grinding device leaving a sheet material surface;

[0042] Figure 8 It is a schematic diagram of a horizontal pin of a sheet material floating grinding device disclosed in the utility model being adjusted to an initial position;

[0043] Fig. 9 It is a schematic diagram of the upper and lower limit positions of the transverse pin of a sheet material floating grinding device disclosed by the utility model in a set area;

[0044] Fig.10 The utility model discloses a schematic diagram of the grinding position of a grinding wheel of a sheet metal floating grinding device on a sheet metal workpiece with local extreme unevenness.

[0045] In the figure:

[0046] 1. Grinding head; 101. Grinding head box; 102. V-belt pulley; 103. Grinding head shaft; 104. Bearing; 105. Grinding head hinge shaft; 106. Grinding wheel seat; 107. Grinding wheel gland;

[0047] 2. Grinding head motor;

[0048] 3. Swing arm;

[0049] 4. Floating amount detection mechanism; 401. displacement sensor; 402. sensor bracket; 403. magnetic ring; 404. guide sleeve; 405. guide sleeve seat; 406. bracket bearing; 407. bracket; 408. cross pin;

[0050] 5. Grinding wheel weight;

[0051] 6. Lifting mechanism;

[0052] 7. Trolley counterweight;

[0053] 8. Horizontal shifting trolley;

[0054] 9. Horizontal track;

[0055] 10. Longitudinal movement of the cart;

[0056] 11. Longitudinal track;

[0057] 12. V-belt tensioning top screw;

[0058] 13. V-belt;

[0059] 14. Grinding wheel;

[0060] 15. Sheet metal workpiece. DETAILED DESCRIPTION

[0061] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0062] This embodiment provides a sheet metal floating grinding device, such as Figures 1 to 3 As shown, it includes: a grinding mechanism and a displacement device for driving the grinding mechanism to translate relative to the sheet workpiece 15. In this embodiment, the displacement device is used to drive the grinding mechanism to move along a first horizontal direction and along a second horizontal direction, and the first horizontal direction and the second horizontal direction are perpendicular to each other;

[0063] The grinding mechanism includes a grinding head 1, a swing arm 3, a floating amount detection mechanism 4, a grinding wheel counterweight 5 and a lifting mechanism 6. The swing arm 3 is hinged on the displacement device. One end of the swing arm 3 is provided with a grinding head 1, and a grinding wheel 14 is installed on the grinding head 1. The other end of the swing arm 3 is provided with a floating amount detection mechanism 4 and a grinding wheel counterweight 5. By increasing / decreasing the number of grinding wheel counterweights 5, the lever effect of the swing arm 3 is used to adjust the pressing force of the grinding wheel 14. Figure 4 As shown, the floating amount detection mechanism 4 includes a transverse pin 408;

[0064] One end of the lifting mechanism 6 is hinged to the displacement device, and the other end of the lifting mechanism 6 is provided with a waist-shaped hole extending along the travel direction of the lifting mechanism 6. In this embodiment, the lifting mechanism 6 is an oil cylinder or an electro-hydraulic push rod, and the waist-shaped hole is opened at the end of the piston rod of the oil cylinder or the electro-hydraulic push rod, so that the lifting mechanism 6 has a larger travel, such as Figure 1 and Figure 2 As shown, in order to adapt to plates of greater thickness, the transverse pin 408 is fixed on the swing arm 3 and is located in the waist-shaped hole;

[0065] The lifting mechanism 6 can be extended and retracted so that when the grinding wheel 14 is grinding the sheet workpiece 15, the transverse pin 408 can move in the waist-shaped hole along the length direction of the waist-shaped hole, and when the grinding wheel 14 is close to the edge of the sheet workpiece 15, the lifting mechanism 6 is retracted so that the upper end hole wall of the waist-shaped hole abuts against the transverse pin 408 to keep the height of the grinding head 1 unchanged;

[0066] The present embodiment provides a sheet material floating grinding device, in which the grinding wheel 14 abuts against the surface of the sheet material workpiece 15 under the action of the self-weight of the grinding head 1, and the grinding head 1 with a relatively large weight provides a relatively large pressing force for the grinding wheel 14, and the pressing force of the grinding wheel 14 is adjusted by increasing or decreasing the weight of the grinding wheel counterweight 5. Compared with the existing sheet material grinding device, a complex electric control system and a hydraulic system are not required to control the pressing force of the grinding wheel 14, and at the same time, the grinding mechanism is driven to move by a displacement device, thereby increasing the walking speed and thus improving the working efficiency;

[0067] When the grinding wheel 14 is grinding the sheet workpiece 15, the lifting mechanism 6 is extended and retracted so that the transverse pin 408 on the swing arm 3 can move in the waist-shaped hole along the length direction of the waist-shaped hole, that is, during the grinding process, the lifting mechanism 6 is extended and retracted so that the transverse pin 408 floats relative to the waist-shaped hole, and the transverse pin 408 does not abut against the upper hole wall or the lower hole wall of the waist-shaped hole, so that the transverse pin 408 has an available floating amount during the grinding process, thereby making the swing arm 3 have an available floating amount, and further making the grinding head 1 have an available floating amount, so that the grinding wheel 14 can follow the surface of the sheet workpiece 15 for floating grinding, thereby ensuring the surface grinding effect of the sheet;

[0068] When the grinding wheel 14 moves to the point where it is about to exceed the width of the sheet workpiece 15 (i.e., when it is close to the edge of the sheet workpiece 15), the lifting mechanism 6 is extended and retracted to make the cross pin 408 abut against the upper hole wall of the waist-shaped hole, so that the height of the grinding head 1 remains unchanged, and the grinding wheel 14 no longer performs floating grinding. The grinding wheel 14 maintains the current height and continues to grind the sheet workpiece 15, effectively preventing the grinding wheel 15 from touching the edge of the sheet.

[0069] In a specific embodiment, Figure 4 As shown, the floating amount detection mechanism 4 further includes a displacement sensor 401, and the displacement sensor 401 is arranged at one end of the lifting mechanism 6 away from the displacement device;

[0070] The lifting mechanism can be telescopically adjusted according to the position of the transverse pin 408 in the length direction of the waist-shaped hole detected by the displacement sensor 401, so that the transverse pin 408 is located in a set area in the length direction of the waist-shaped hole;

[0071] The position of the transverse pin 408 fixed to the swing arm 3 in the waist-shaped hole is detected by the displacement sensor 401, thereby detecting the height of the grinding head 1 located at the other end of the swing arm 3. The transverse pin 408 is extended and retracted by the lifting mechanism 6 to be within the set area, so that the grinding head 1 has an available floating amount, and the grinding wheel 14 can follow the surface of the sheet workpiece 15 for floating grinding, thereby ensuring the grinding effect of the sheet surface. The sensing element only uses a displacement sensor, which makes the design of the electronic control system simpler and the cost lower.

[0072] In a specific embodiment, Figure 4 As shown, the floating amount detection mechanism 4 also includes a sensor bracket 402, a magnetic ring 403 and a guide sleeve 404;

[0073] The sensor bracket 402 is fixed to one end of the lifting mechanism 6 provided with a waist-shaped hole. In this embodiment, the sensor bracket 402 is fixed to the end of the piston rod, and the displacement sensor 401 is fixed to the sensor bracket 402;

[0074] A guide sleeve 404 is provided at one end of the transverse pin 408 close to the displacement sensor 401. The axis of the guide sleeve 404 intersects perpendicularly with the axis of the transverse pin 408. The guide sleeve 404 can rotate relative to the transverse pin 408.

[0075] The guide sleeve 404 and the magnetic ring 403 are coaxially arranged, and the measuring rod of the displacement sensor 401 is inserted into the magnetic ring 403 and the guide sleeve 404;

[0076] The displacement sensor 401 used in this embodiment is a magnetostrictive displacement sensor. When the measuring rod of the displacement sensor 401 and the magnetic ring 403 are in different relative positions, the displacement sensor 401 can output an electrical signal of the relative position relationship between the two. The measuring rod of the displacement sensor 401 and the magnetic ring 403 are not in direct contact. Repeated detection will not cause wear to the sensor, which can greatly improve the reliability and service life of the detection.

[0077] In this embodiment, if Figure 4 As shown, it also includes a guide sleeve seat 405, a bracket bearing 406 and a bracket 407. The bracket 407 is rotatably connected to the cross pin 408 through the bracket bearing 406. One end of the guide sleeve seat 405 is connected to the bracket 407 through a threaded fastener, and the other end of the guide sleeve seat 405 is connected to the magnetic ring 403 and the guide sleeve 404 through a threaded fastener, so that the magnetic ring 403 and the guide sleeve 404 can rotate with the measuring rod of the displacement sensor 401 to adapt to the angle change between the lifting mechanism 6 and the swing arm 3, thereby avoiding damage to the measuring rod of the displacement sensor 401.

[0078] In a specific embodiment, Figures 1 to 3 As shown, the grinding mechanism further includes a grinding head motor 2 , which is mounted on the displacement device and can drive the grinding wheel 14 to rotate.

[0079] In a specific embodiment, Figure 3 As shown, the grinding head 1 includes a grinding head box 101 and a grinding head shaft 103;

[0080] One end of the grinding head box 101 is provided with a grinding head hinge shaft 105 hinged to the swing arm 3, and the other end of the grinding head box 101 is rotatably connected to the grinding head shaft 103 through a bearing 104. A bearing seal is also installed on the grinding head box 101 to provide protection for the bearing 104;

[0081] The grinding head motor 2 can drive the grinding head shaft 103 to rotate, and the grinding wheel 14 is installed on the grinding head shaft 103 .

[0082] In a specific embodiment, Figure 3 As shown, it also includes a V-belt pulley 102 and a V-belt 13;

[0083] V-belt pulleys 102 are installed on the grinding head shaft 103 and the output shaft of the grinding head motor 2. Multiple V-belts 13 are sleeved on the two V-belt pulleys 102. The cooperation between the V-belt pulleys 102 and the V-belts 13 makes the transmission smooth and low-noise, and has a certain buffering and vibration-absorbing effect, thereby preventing the vibration generated during the contact between the grinding wheel 14 and the sheet workpiece 15 from affecting the grinding head motor 2.

[0084] In a specific embodiment, Figure 1 and Figure 2As shown, it also includes a V-belt tensioning top screw 12;

[0085] like Figure 5 As shown, the V-belt tensioning top screw 12 is arranged on the swing arm 3 , and the V-belt tensioning top screw 12 can abut against the grinding head box 101 , and by tightening the V-belt tensioning top screw 12 , a suitable tensioning force is provided for the V-belt 13 .

[0086] In a specific embodiment, Figure 1 and Figure 2 As shown, the displacement device includes a transverse movement trolley 8, a transverse movement rail 9, a longitudinal movement trolley 10 and a longitudinal movement rail 11;

[0087] The longitudinal movement track 11 is arranged along the first horizontal direction, and the longitudinal movement vehicle 10 is installed on the longitudinal movement track 11;

[0088] The transverse track 9 is arranged along the second horizontal direction, the transverse track 9 is arranged on the longitudinal moving trolley 10, the transverse moving trolley 8 is installed on the transverse track 9, and the grinding mechanism is installed on the transverse moving trolley 8;

[0089] In this embodiment, the longitudinal movement track 11 is fixed on the ground foundation, and the longitudinal movement vehicle 10 travels on the longitudinal movement track 11;

[0090] A transverse track 9 is fixed on the top of the longitudinal moving trolley 10, and the transverse moving trolley 8 runs on the transverse track 9. On the top of the transverse moving trolley 8, there are arranged an articulated support of the swing arm 3, an articulated support of the lifting mechanism 6, a trolley counterweight 7 and a grinding head motor 2, so that the moving parts are exposed to facilitate installation and maintenance. In this embodiment, the output shaft axis of the grinding head motor 2 is colinear with the hinge axis of the articulated support for installing the swing arm 3.

[0091] In a specific embodiment, Figures 1 to 3 As shown, a trolley counterweight 7 is fixed to one end of the transverse moving trolley 8 away from the grinding head 1. The trolley counterweight 7 is used to adjust the center of gravity of the transverse moving trolley 8 to prevent the transverse moving trolley 8 from overturning.

[0092] In a specific embodiment, Figure 3 As shown, it also includes a grinding wheel seat 106 and a grinding wheel pressure cover 107. The grinding wheel seat 106, the grinding wheel 14 and the grinding wheel pressure cover 107 are sequentially sleeved on the grinding head shaft 103. The grinding wheel seat 106 is fixed on the grinding head shaft 103. The grinding wheel pressure cover 107 is detachably connected to the grinding wheel seat 106 by bolts. The grinding wheel pressure cover 107 presses the grinding wheel 14 onto the grinding wheel seat 106;

[0093] The grinding wheel 14 is replaced frequently, and a grinding wheel pressure cover 107 detachably connected to the grinding wheel seat 106 is provided to facilitate the replacement of the grinding wheel 14 .

[0094] In actual use, the working process of a sheet metal floating grinding device provided by the present application is as follows:

[0095] Put the sheet workpiece 15 in place, start the grinding wheel motor 2 before the grinding wheel 14 contacts the sheet workpiece 15, start the longitudinal moving trolley 10, and extend the lifting mechanism 6 to lower the grinding wheel 14. After the grinding wheel 14 contacts the workpiece, the lifting mechanism 6 continues to extend so that the cross pin 408 no longer abuts against the upper end hole wall of the waist-shaped hole of the lifting mechanism 6, until the displacement of the cross pin 408 reaches the set distance S1, at which time the cross pin 408 is in the initial position O;

[0096] Assume that the total limit movement of the cross pin 408 between the upper and lower end hole walls in the waist-shaped hole of the lifting mechanism 6 is L0 (L0 = the length of the waist-shaped hole - the diameter of the cross pin 408), as Figure 8 As shown, the available floating amount of the cross pin 408 upward is S1, and the available floating amount of the cross pin 408 downward is L0-S1;

[0097] like Fig.10 As shown, when the grinding wheel 14 is grinding within the plate width of the sheet workpiece 15, the set distance S1 is proportional to the available floating amount H1 of the grinding wheel 14 floating downward. The larger the set distance S1 is, the larger the available floating amount H1 of the grinding wheel 14 floating downward is, and the smaller the available floating amount H2 of the grinding wheel 14 floating upward is. Therefore, the operator needs to adjust the size of the set distance S1 according to the length of the waist-shaped hole and the surface condition of the sheet workpiece 15.

[0098] like Fig. 9 As shown, the condition that the lifting mechanism 6 needs to be telescopically adjusted is: the displacement of the horizontal pin 408 relative to the initial position O upward or downward is detected to exceed S2 (S2 is less than S1 and S2 is less than L0-S1) repeatedly N times within the time interval △T, that is, the area of ​​the waist-shaped hole upward and downward by S2 based on the initial position O is the set area in the length direction of the waist-shaped hole;

[0099] The grinding wheel 14 is lifted by the sheet workpiece 15, and moves up and down to grind along with the unevenness of the surface of the sheet workpiece 15. The displacement sensor 401 regularly detects the relative position of the cross pin 408 in the waist-shaped hole. When the displacement sensor 401 detects that the cross pin 408 exceeds the set area, the piston rod of the lifting mechanism 6 extends or retracts to return the cross pin 408 to the vicinity of the initial position O (in actual use, an execution and detection accuracy error S3 is allowed to exist, and the value of S3 is much smaller than S2. The area S3 upward and downward based on the initial position O is defined as the vicinity of the initial position O);

[0100] As the longitudinally moving trolley 10 moves, before the grinding wheel 14 exceeds the plate width (which can be visually confirmed by the operator, or can be reminded by connecting an alarm to a distance sensor, or by interlocking a travel switch), the lifting mechanism 6 retracts to make the cross pin 408 abut against the upper hole wall of the waist-shaped hole, eliminating the downward floating amount of the grinding wheel 14, and the lifting mechanism 6 is locked to maintain the extension of the piston rod to ensure that when the grinding wheel 14 exceeds the plate width, the grinding wheel 14 will not suddenly fall and collide with the edge of the plate workpiece 15;

[0101] After the grinding wheel 14 exceeds the plate width, the lateral moving carriage 8 steps a set displacement value, and the longitudinal moving carriage 10 moves in the reverse direction for grinding, until the grinding wheel 14 exceeds the plate width again, the lateral moving carriage 8 steps a set displacement value again, and the longitudinal moving carriage 10 moves in the reverse direction, and the cycle is repeated. The trajectory of the grinding wheel 14 is as follows: Figure 6 As shown, until the entire surface of the sheet workpiece 15 is ground, after the entire surface grinding is completed, it can be ground again in the opposite direction to improve the grinding effect, or the sheet workpiece 15 can be directly turned upside down and the other side can be ground. After the grinding of both sides is completed, the sheet workpiece 15 is replaced and the grinding operation of the next sheet workpiece 15 is continued.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A sheet metal floating grinding device, characterized in that: include: A grinding mechanism and a displacement device for driving the grinding mechanism to translate relative to a sheet workpiece (15); The grinding mechanism comprises a grinding head (1), a swing arm (3), a floating amount detection mechanism (4), a grinding wheel counterweight (5) and a lifting mechanism (6); the swing arm (3) is hinged on the displacement device; one end of the swing arm (3) is provided with a grinding head (1), a grinding wheel (14) is mounted on the grinding head (1); the other end of the swing arm (3) is provided with a floating amount detection mechanism (4) and a grinding wheel counterweight (5); the floating amount detection mechanism (4) comprises a transverse pin (408); One end of the lifting mechanism (6) is hinged to the displacement device, and the other end of the lifting mechanism (6) is provided with a waist-shaped hole extending along the travel direction of the lifting mechanism (6), and the transverse pin (408) is installed on the swing arm (3) and is located in the waist-shaped hole; The lifting mechanism (6) can be extended and retracted so that when the grinding wheel (14) is grinding the sheet workpiece (15), the transverse pin (408) can move in the waist-shaped hole along the length direction of the waist-shaped hole, and when the grinding wheel (14) is close to the edge of the sheet workpiece (15), the lifting mechanism (6) contracts so that the upper end hole wall of the waist-shaped hole abuts against the transverse pin (408) to keep the height of the grinding head (1) unchanged.

2. A sheet metal floating grinding device according to claim 1, characterized in that: The floating amount detection mechanism (4) further comprises a displacement sensor (401), and the displacement sensor (401) is arranged at an end of the lifting mechanism (6) away from the displacement device; The lifting mechanism can be telescopically adjusted according to the position of the transverse pin (408) in the length direction of the waist-shaped hole detected by the displacement sensor (401), so that the transverse pin (408) is located in a set area in the length direction of the waist-shaped hole.

3. A sheet metal floating grinding device according to claim 2, characterized in that: The floating amount detection mechanism (4) further comprises a sensor bracket (402), a magnetic ring (403) and a guide sleeve (404); The sensor bracket (402) is fixed to one end of the lifting mechanism (6) provided with a waist-shaped hole, and the displacement sensor (401) is fixed to the sensor bracket (402); A guide sleeve (404) is provided at one end of the transverse pin (408) close to the displacement sensor (401), the axis of the guide sleeve (404) intersects perpendicularly with the axis of the transverse pin (408), and the guide sleeve (404) can rotate relative to the transverse pin (408); The guide sleeve (404) and the magnetic ring (403) are coaxially arranged, and the measuring rod of the displacement sensor (401) is inserted into the magnetic ring (403) and the guide sleeve (404).

4. The floating grinding device for sheet metal according to claim 1, characterized in that: The grinding mechanism further comprises a grinding head motor (2), wherein the grinding head motor (2) is mounted on the displacement device, and the grinding head motor (2) is capable of driving the grinding wheel (14) to rotate.

5. A sheet metal floating grinding device according to claim 4, characterized in that: The grinding head (1) comprises a grinding head box (101) and a grinding head shaft (103); One end of the grinding head box (101) is provided with a grinding head hinge shaft (105) hinged to the swing arm (3), and the other end of the grinding head box (101) is rotatably connected to the grinding head shaft (103); The grinding head motor (2) can drive the grinding head shaft (103) to rotate, and the grinding wheel (14) is mounted on the grinding head shaft (103).

6. A sheet metal floating grinding device according to claim 5, characterized in that: Also includes a V-belt pulley (102) and a V-belt (13); The grinding head shaft (103) and the output shaft of the grinding head motor (2) are both mounted with V-belt pulleys (102), and the V-belt (13) is sleeved on the two V-belt pulleys (102).

7. A sheet metal floating grinding device according to claim 6, characterized in that: Also includes a V-belt tensioning top screw (12); The V-belt tensioning top screw (12) is arranged on the swing arm (3), and the V-belt tensioning top screw (12) can abut against the grinding head box (101).

8. The floating grinding device for sheet metal according to claim 1, characterized in that: The displacement device comprises a transverse movement trolley (8), a transverse movement track (9), a longitudinal movement trolley (10) and a longitudinal movement track (11); The longitudinal movement track (11) is arranged along a first horizontal direction, and the longitudinal movement vehicle (10) is installed on the longitudinal movement track (11); The transverse track (9) is arranged along the second horizontal direction, the transverse track (9) is arranged on the longitudinal movement trolley (10), the transverse trolley (8) is installed on the transverse track (9), and the grinding mechanism is installed on the transverse trolley (8).

9. The floating grinding device for sheet metal according to claim 8, characterized in that: A trolley counterweight (7) is fixed to one end of the transverse trolley (8) away from the grinding head (1).

10. The floating grinding device for sheet metal according to claim 5, characterized in that: The invention also comprises a grinding wheel seat (106) and a grinding wheel pressure cover (107); the grinding wheel seat (106), the grinding wheel (14) and the grinding wheel pressure cover (107) are sequentially sleeved on the grinding head shaft (103); the grinding wheel seat (106) is fixed on the grinding head shaft (103); the grinding wheel pressure cover (107) is detachably connected to the grinding wheel seat (106); and the grinding wheel pressure cover (107) presses the grinding wheel (14) onto the grinding wheel seat (106).

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