Workpiece clamping device and workpiece clamping method

Abstract

The application belongs to the technical field of part machining, and discloses a workpiece clamping device and a workpiece clamping method. The workpiece clamping device comprises a clamping seat, a horizontal clamping unit and a vertical clamping unit. A vertical positioning groove and at least one vertical clamping groove are formed in the clamping seat, and the vertical positioning groove and the vertical clamping groove are used for accommodating the thin wall of the workpiece. The horizontal clamping unit comprises clamping plates arranged in the vertical positioning groove and the vertical clamping groove. The clamping plate in the vertical positioning groove can be close to the thin wall of the workpiece along the X axis, so that the thin wall of the workpiece is tightly pressed against the wall surface of the vertical positioning groove. The two clamping plates in the vertical clamping groove can be close to each other along the X axis, so as to abut against and clamp the thin wall of the workpiece on both sides. The vertical clamping unit comprises an abutting assembly, and the abutting assembly can abut against the upper end surface of the thin wall of the workpiece along the vertical direction. The workpiece clamping device has the advantages of simple structure, convenient operation, and can effectively position and clamp the thin wall of the workpiece.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of part machining, in particular to a workpiece clamping device and a workpiece clamping method. BACKGROUND

[0002] When machining a thin-walled part, it is usually difficult to ensure the clamping force and the clamping angle of the part due to manual clamping of the part, resulting in problems such as size out-of-tolerance and structural damage of the finished part during machining. In the field of aerospace, thin-walled parts often need to be machined. If the thin-walled parts are not clamped stably, the thin-walled parts are prone to vibration and deviation during machining, and finally the machining quality of the thin-walled parts does not meet the precision requirements of aerospace.

[0003] Traditional clamping fixtures are mostly suitable for simple single thin-walled parts and cannot effectively clamp multiple thin-walled parts. In addition, traditional clamping fixtures can only generate clamping force in a single direction and cannot effectively prevent vibration and deviation of the part during machining. SUMMARY

[0004] The present application aims to provide a workpiece clamping device and a workpiece clamping method, which can effectively position and clamp the thin wall of a workpiece and have a simple structure and convenient operation.

[0005] To achieve this purpose, the present application adopts the following technical solutions:

[0006] The workpiece clamping device comprises:

[0007] A clamping seat, a vertical positioning groove and at least one vertical clamping groove are formed in the clamping seat, and the vertical positioning groove and the at least one vertical clamping groove are used to accommodate the thin wall of a workpiece;

[0008] A horizontal clamping unit, the horizontal clamping unit comprises a clamping plate arranged in the vertical positioning groove and the vertical clamping groove, one clamping plate is arranged in the vertical positioning groove, and two clamping plates are arranged opposite to each other in the vertical clamping groove, the clamping plate in the vertical positioning groove can move along the X-axis to approach the thin wall of the workpiece, so that the thin wall of the workpiece is tightly pressed against the wall surface of the vertical positioning groove, and the two clamping plates in the vertical clamping groove can move along the X-axis to approach each other, so as to abut against and clamp the thin wall of the workpiece on both sides, respectively;

[0009] A vertical clamping unit, the vertical clamping unit comprises an abutting assembly, the abutting assembly is arranged on the clamping seat in a height-adjustable manner, and the abutting assembly can abut against the upper end surface of the thin wall of the workpiece in a vertical direction.

[0010] Preferably, a first sliding groove is formed on the bottom surface of the vertical positioning groove and the bottom surface of the vertical clamping groove along the X-axis direction, and a protrusion matching the first sliding groove is arranged on the clamping plate, the protrusion being arranged in the first sliding groove and being in sliding fit with the first sliding groove.

[0011] Preferably, the horizontal clamping unit further comprises a clamping transmission assembly, the clamping transmission assembly comprising a worm, a gear and a connecting mechanism, the worm being arranged on the clamping seat, the gear being in mesh with the worm, one end of the connecting mechanism being connected with the gear, and the other end of the connecting mechanism being connected with the clamping plate, the worm being capable of driving the gear to move along the X-axis to drive the connecting mechanism to move the clamping plate along the X-axis.

[0012] Preferably, a plurality of connecting shafts are uniformly arranged on the clamping plate, and the plurality of connecting shafts are connected with the connecting mechanism.

[0013] Preferably, the horizontal clamping unit further comprises a crank handle, the crank handle being arranged on the worm.

[0014] Preferably, the clamping transmission assembly further comprises a limiting shaft and a bearing, the limiting shaft being arranged in the gear and being in key connection with the gear, the bearing being sleeved on the limiting shaft, the limiting shaft being in fit with the inner ring of the bearing, and the outer ring of the bearing being in fit with the connecting mechanism; a second sliding groove is formed on the clamping seat along the X-axis direction, and the end of the limiting shaft extends into the second sliding groove and is in sliding fit with the second sliding groove.

[0015] Preferably, the vertical clamping unit further comprises a first mounting shaft and a rotating block, the first mounting shaft being connected with the clamping seat, and the rotating block being rotatably arranged on the first mounting shaft, and the abutting component being adjustably arranged on the rotating block.

[0016] Preferably, the vertical clamping unit further comprises a second mounting shaft, the second mounting shaft being arranged on the clamping seat, the first mounting shaft being movably arranged in the second mounting shaft, and a positioning pin hole being formed on the first mounting shaft and the second mounting shaft along the height direction.

[0017] Preferably, a fixing lug is arranged on the clamping seat.

[0018] A workpiece clamping method using the workpiece clamping device, comprising the following steps:

[0019] S1, fixing the clamping seat at a specified position of a machining table surface;

[0020] S2, one of the thin walls of the workpiece is placed in the vertical positioning slot, and the remaining thin walls of the workpiece are respectively placed in at least one vertical clamping slot, and the clamping plate in the vertical positioning slot is used to abut the thin wall of the workpiece against the wall surface of the vertical positioning slot;

[0021] S3, the clamping plate in the vertical clamping slot is used to clamp the thin wall of the workpiece;

[0022] S4, the height of the abutting assembly is adjusted according to the size of the thin wall of the workpiece, and the abutting assembly is abutted against the upper end surface of the thin wall of the workpiece.

[0023] The beneficial effects of the present application are:

[0024] The workpiece clamping device provided by the present application has the following advantages: the vertical positioning slot is used to accommodate the thin wall of the workpiece, and the clamping plate in the vertical positioning slot can abut the thin wall of the workpiece against the wall surface of the vertical positioning slot, so that the vertical positioning slot can play a role in positioning and preliminary fastening of the workpiece before machining, so that the workpiece is in a standard position during each machining process, and the machining precision and quality of the workpiece are guaranteed; the two clamping plates in the vertical clamping slot are arranged opposite to each other, and the two clamping plates can move along the X-axis to approach the thin wall of the workpiece to clamp the workpiece, so that the clamping and fixing of the workpiece are realized; the abutting assembly is arranged on the clamping seat and can abut against the upper end surface of the thin wall of the workpiece in the vertical direction, so that the vertical clamping unit can clamp and fix the workpiece in the vertical direction, effectively preventing the workpiece from vibrating or deviating up and down during machining, and further improving the stability of the workpiece clamping; and since the height of the abutting assembly is adjustable, the vertical clamping unit can be applied to workpieces of different sizes; since at least one vertical clamping slot for accommodating the thin wall of the workpiece is formed in the clamping seat, a workpiece with a multi-thin-wall structure can be placed in the clamping seat, and the workpiece clamping device can clamp a complex workpiece with a multi-thin-wall structure, solving the problem that a traditional single-thin-wall clamping device cannot effectively clamp a multi-thin-wall workpiece, and expanding the application range of the workpiece clamping device.

[0025] The workpiece clamping method has the following advantages: first, the thin wall of the workpiece is placed in the vertical positioning slot and the vertical clamping slot, the clamping plate in the vertical positioning slot is used to position and pre-press the workpiece, so that the workpiece is located at a predetermined position on the machining table, thereby ensuring the machining quality and precision of the workpiece; then, the clamping plate in the vertical clamping slot is used to clamp and fix the remaining thin walls of the workpiece, and the abutting assembly of the vertical clamping unit is used to abut against the upper end surface of the thin wall in the vertical direction, thereby clamping and fixing the workpiece, and improving the stability of the workpiece during machining. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a first perspective view of a workpiece clamping device according to an embodiment of the present application;

[0027] Figure 2 is a second perspective view of a workpiece clamping device according to an embodiment of the present application;

[0028] Figure 3 is a structural schematic view of a clamping transmission assembly according to an embodiment of the present application;

[0029] Figure 4 is a top view of a clamping transmission assembly according to an embodiment of the present application.

[0030] In the drawings:

[0031] 1 - clamping seat; 11 - vertical positioning slot; 12 - vertical clamping slot; 13 - first sliding slot; 14 - fixed ear plate;

[0032] 2 - horizontal clamping unit; 21 - clamping plate; 211 - protruding part; 212 - connecting shaft; 22 - clamping transmission assembly; 221 - worm; 222 - gear; 223 - connecting mechanism; 2231 - connecting plate; 2232 - actuating block; 2233 - inner plate; 23 - handle;

[0033] 3 - vertical clamping unit; 31 - abutting assembly; 32 - first mounting shaft; 321 - positioning pin hole; 33 - rotating block; 34 - second mounting shaft. DETAILED DESCRIPTION

[0034] The present application will be further described below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are intended to be merely illustrative of the present application and not in limitation thereof. It should also be noted that, for the purpose of description, only the parts related to the present application are shown in the drawings rather than all the parts.

[0035] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or integrated; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] In the present application, unless otherwise explicitly specified and limited, "on" or "under" of a first feature to a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "over" of a first feature to a second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. "Under", "below" and "underneath" of a first feature to a second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0037] In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0038] As Figure 1 and Figure 2As shown, the present application provides a workpiece clamping device, which comprises a clamping seat 1, a horizontal clamping unit 2 and a vertical clamping unit 3, the clamping seat 1 is provided with a vertical positioning groove 11 and at least one vertical clamping groove 12, the vertical positioning groove 11 and the at least one vertical clamping groove 12 are used to accommodate the thin wall of the workpiece; the horizontal clamping unit 2 comprises a clamping plate 21 arranged in the vertical positioning groove 11 and the vertical clamping groove 12, one clamping plate 21 is arranged in the vertical positioning groove 11, two clamping plates 21 are oppositely arranged in the vertical clamping groove 12, the clamping plate 21 in the vertical positioning groove 11 can move along the X axis to approach the thin wall of the workpiece, so as to tightly abut the thin wall of the workpiece on the wall surface of the vertical positioning groove 11; the two clamping plates 21 in the vertical clamping groove 12 can approach each other along the X axis, so as to abut and clamp the thin wall of the workpiece on both sides of the thin wall respectively. In this embodiment, the direction of the X axis is horizontal, the clamping plate 21 can move along the positive direction of the X axis and also can move along the negative direction of the X axis; before the thin wall of the workpiece is placed into the vertical positioning groove 11, the clamping seat 1 is first placed on the machining table, and the vertical wall surface of the vertical positioning groove 11 opposite to the clamping plate 21 is aligned with the specified position of the machining table, so as to ensure that the single clamping plate 21 in the vertical positioning groove 11 can align the thin wall with the standard position for machining when clamping the thin wall; the two clamping plates 21 arranged in the vertical clamping groove 12 are to ensure that the clamping plates 21 in the vertical clamping groove 12 can always clamp the thin wall of the workpiece, so as to avoid the situation that the single clamping plate 21 cannot clamp due to different specifications of the workpiece. When placing the workpiece, the thin wall of the workpiece is placed into the vertical positioning groove 11 along the vertical direction, because the vertical positioning groove 11 is used to accommodate the thin wall of the workpiece and the clamping plate 21 arranged in the vertical positioning groove 11 can move along the X axis, and the clamping plate 21 in the vertical positioning groove 11 can tightly abut the thin wall of the workpiece on the wall surface of the vertical positioning groove 11, therefore, the vertical positioning groove 11 can play the role of positioning and preliminary fastening before machining, so that the workpiece is always in the standard position during each machining, and the machining precision and quality of the workpiece are ensured; because the two clamping plates 21 are oppositely arranged in the vertical clamping groove 12, the two clamping plates 21 can approach the thin wall of the workpiece along the X axis to clamp the workpiece, so as to realize the clamping and fixing of the workpiece; in addition, because the clamping seat 1 is provided with at least one vertical clamping groove 12 for accommodating the thin wall of the workpiece, the workpiece with multiple thin wall structures can be placed into the clamping seat 1, the workpiece clamping device can clamp the complex workpiece with multiple thin wall structures, and the problem that the traditional single thin wall clamping device cannot effectively clamp the workpiece with multiple thin wall structures is solved, and the application range of the workpiece clamping device is expanded.

[0039] The vertical clamping unit 3 includes an abutment component 31, which is height-adjustably mounted on the clamping base 1. The abutment component 31 can abut against the upper end face of the thin wall of the workpiece in the vertical direction. In this embodiment, multiple vertical clamping units 3 are provided. When the thin wall of the workpiece is placed in the vertical positioning groove 11 and the vertical clamping groove 12, the abutment component 31 can abut against the upper end face of the thin wall of the workpiece in the vertical direction, thereby pressing the thin wall of the workpiece against the clamping base 1. Therefore, the vertical clamping unit 3 can vertically clamp and fix the workpiece, effectively preventing the workpiece from vibrating or shifting during processing, and further improving the stability of workpiece clamping. Furthermore, since the abutment component 31 is height-adjustably mounted on the clamping base 1, the vertical clamping unit 3 can be used for workpieces of different sizes and specifications. Specifically, multiple vertical clamping units 3 are provided on the clamping base 1. Figure 1 and Figure 2 To make the structure clear, only two vertical clamping units 3 are shown (multiple units can be set according to the actual situation). Multiple vertical clamping units 3 can uniformly vertically position and clamp the thin walls in the vertical positioning groove 11 and the vertical clamping groove 12 respectively.

[0040] Furthermore, such as Figure 2 and Figure 3 As shown, both the bottom surface of the vertical positioning groove 11 and the bottom surface of the vertical clamping groove 12 are provided with first sliding grooves 13 along the X-axis. The clamping plate 21 is provided with a protrusion 211 that matches the first sliding groove 13. The protrusion 211 is disposed in the first sliding groove 13 and slides in cooperation with the first sliding groove 13. Specifically, both the bottom surface of the vertical positioning groove 11 and the bottom surface of the vertical clamping groove 12 are provided with first sliding grooves 13 along the X-axis. The cross-section of the first sliding groove 13 is rectangular. The bottom of the clamping plate 21 is provided with a protrusion 211 that matches the cross-sectional shape of the first sliding groove 13. The protrusion 211 extends into the first sliding groove 13 and can slide in cooperation with the first sliding groove 13. Therefore, when the clamping plate 21 moves along the X-axis, the protrusion 211 can ensure the stability of the movement of the clamping plate 21 and avoid the situation of deflection during the clamping process.

[0041] Furthermore, such as Figures 1 to 3As shown, the horizontal clamping unit 2 further comprises a clamping transmission assembly 22, the clamping transmission assembly 22 comprises a worm 221, a gear 222 and a connecting mechanism 223, the worm 221 is arranged on the clamping seat 1, the gear 222 is engaged with the gear 222, one end of the connecting mechanism 223 is connected with the gear 222, the other end of the connecting mechanism 223 is connected with the clamping plate 21, the rotation of the worm 221 can drive the gear 222 to move along the X axis, so that the connecting mechanism 223 drives the clamping plate 21 to move along the X axis. Specifically, the clamping transmission assembly 22 comprises meshing gears 222 and worms 221, and further comprises a connecting mechanism 223 connected with the gear 222, the gear 222 is engaged with the worm 221 for transmission, which is a common turbine worm structure in the art, and its principle and specific structure will not be repeated here; the worm 221 is arranged on the clamping seat 1, and the position of the worm 221 on the clamping seat 1 does not change when it rotates; when the worm 221 rotates, it can drive the gear 222 engaged with it to move along the X axis, since the connecting mechanism 223 is connected with the gear 222, when the gear 222 moves along the X axis, the connecting mechanism 223 will also move along the X axis under the drive of the gear 222, and further drive the clamping plate 21 to move along the X axis; the gear 222 and the worm 221 are common transmission devices in the art, which are simple in structure and convenient to operate. In this embodiment, the clamping plate 21 located in the vertical clamping groove 12 at the end and close to the outer side wall of the clamping seat 1 can also be driven to move along the X axis by a screw, which is threadedly connected with the outer side wall of the clamping seat 1, the clamping plate 21 is provided with a bearing, the end of the screw is connected with the inner ring of the bearing, and the outer ring of the bearing is embedded in the clamping plate 21 to cooperate with the clamping plate 21, so that when the screw is rotated, the screw can drive the clamping plate 21 close to the outer side wall of the clamping seat 1 to move linearly along the X axis through the bearing; the structure is simple, which greatly saves the space of the side wall of the clamping seat 1; specifically, the gear 222 is a bevel gear, the teeth of the bevel gear are engaged with the worm 221, and the axis of the bevel gear forms an angle with the vertical direction, that is, the bevel gear is arranged obliquely, so that adjacent two clamping transmission assemblies 22 can be arranged separately upward and downward, which can greatly save the occupied space of the clamping transmission assembly 22, avoid the interference between adjacent two gears 222, and effectively save space.

[0042] Specifically, as Figure 3 and Figure 4As shown, the clamping plate 21 is uniformly provided with a plurality of connecting shafts 212, and the plurality of connecting shafts 212 are connected with the connecting mechanism 223. In the embodiment, the connecting mechanism 223 comprises a connecting plate 2231, an actuating block 2232 and an inner plate 2233. The connecting plate 2231 is in a fan-shaped structure, one end of the connecting plate 2231 with a larger area is connected with the gear 222, and the other end of the connecting plate 2231 with a smaller area is fixedly connected with the actuating block 2232. The fan-shaped structure can reduce the volume of the connecting plate 2231, thereby saving space. The actuating block 2232 is in a cuboid block structure, and the actuating block 2232 is fixedly connected with the connecting plate 2231. The connecting plate 2231 can drive the actuating block 2232 to move along the X-axis. The inner plate 2233 is fixedly arranged on the actuating block 2232, and the cross-sectional area of the inner plate 2233 perpendicular to the X-axis is greater than that of the actuating block 2232. The clamping plate 21 is connected with the inner plate 2233 through the plurality of connecting shafts 212. The plurality of connecting shafts 212 are uniformly arranged on the clamping plate 21, which can stably connect the clamping plate 21 with the inner plate 2233, and ensure the uniformity and consistency of forces on the clamping plate 21, thereby preventing the clamping plate 21 from damaging the workpiece due to stress concentration when clamping the thin wall of the workpiece.

[0043] Specifically, as shown in Figures 1 to 3 The horizontal clamping unit 2 further comprises a crank 23, and the crank 23 is arranged on the worm 221. In the embodiment, the end of the worm 221 is provided with the crank 23 for manual rotation, thereby facilitating the operator to rotate the worm 221.

[0044] Specifically, the clamping transmission assembly 22 further comprises a limiting shaft and a bearing, the limiting shaft is arranged in the gear 222 and is keyed connected with the gear 222, the bearing is sleeved on the limiting shaft, the limiting shaft is matched with the inner ring of the bearing, and the outer ring of the bearing is matched with the connecting mechanism 223; the second sliding groove is formed on the clamping seat 1 along the X-axis direction, the end of the limiting shaft extends into the second sliding groove and is matched with the second sliding groove in sliding. In the embodiment, the limiting shaft is arranged in the gear 222 and is keyed connected with the gear 222, so that the gear 222 can drive the limiting shaft to rotate when the gear 222 rotates; the bearing is sleeved on the limiting shaft, the inner ring of the bearing is interference matched with the limiting shaft, and the outer ring of the bearing is interference matched with the connecting plate 2231 in the connecting mechanism 223; that is, when the gear 222 is driven by the worm 221 to rotate and move along the X-axis, the bearing can avoid the rotation of the gear 222 from affecting the connecting mechanism 223, and can effectively transmit the linear movement of the gear 222 along the X-axis to the connecting mechanism 223; since the second sliding groove is formed on the inner wall of the clamping seat 1, the end of the limiting shaft extends into the second sliding groove and is matched with the second sliding groove in sliding, so that the gear 222 and the connecting mechanism 223 can be kept stable during the movement along the X-axis; meanwhile, the compression spring is also sleeved on the limiting shaft, one end of the compression spring abuts against the inner wall of the clamping seat 1, and the other end of the compression spring abuts against the end of the inner ring of the bearing, so as to limit the vertical position of the bearing and the gear 222, prevent the gear 222 from disengaging from the worm 221 during the work, and improve the reliability of the workpiece clamping device.

[0045] Further, as Figure 2As shown, the vertical clamping unit 3 further comprises a first mounting shaft 32 connected with the clamping seat 1 and a rotating block 33 rotatably arranged on the first mounting shaft 32, and the abutting assembly 31 is arranged on the rotating block 33 in a height-adjustable manner. In the embodiment, the abutting assembly 31 comprises a pressing rod and a buffer pad arranged at the bottom end of the pressing rod, and the buffer pad can be made of rubber or high-density sponge. The pressing rod abuts against the thin wall of the workpiece through the buffer pad, preventing hard contact with the thin wall and damaging the thin wall, and the buffer pad can also absorb vibration, improving the precision and efficiency of workpiece processing. One end of the rotating block 33 is arranged on the first mounting shaft 32 through a bearing sleeve, so that the rotating block 33 can rotate relative to the first mounting shaft 32. The rotating block 33 is internally provided with a first motor and a second motor, and a first gear is arranged on the end of the first mounting shaft 32 connected with the rotating block 33. A planetary gear is arranged on the output end of the first motor, and the planetary gear is engaged with the first gear. When the first motor is started, the planetary gear rotates around the first gear on the first mounting shaft 32 under the drive of the output end of the first motor, thereby driving the rotating block 33 to rotate on the first mounting shaft 32. A vertical rack is arranged on the pressing rod, and a second gear is arranged on the output end of the second motor, and the second gear is engaged with the rack on the pressing rod. When the second motor is started, the second gear can drive the rack to move vertically, thereby driving the pressing rod to move up and down relative to the rotating block 33, and the height adjustment of the abutting assembly 31 is realized.

[0046] Specifically, as Figure 2As shown, the vertical clamping unit 3 further comprises a second mounting shaft 34 provided on the clamping seat 1, the first mounting shaft 32 is movably arranged in the second mounting shaft 34, and the first mounting shaft 32 and the second mounting shaft 34 are both provided with a positioning pin hole 321 in the height direction. In this embodiment, the second mounting shaft 34 is a hollow cylindrical structure, and the side wall thereof is provided with a positioning pin hole 321. The first mounting shaft 32 is arranged in the second mounting shaft 34 and can move up and down in the second mounting shaft 34. The side wall of the first mounting shaft 32 is also provided with a positioning pin hole 321. A fixing pin is inserted into the positioning pin holes 321 of the first mounting shaft 32 and the second mounting shaft 34 to fix them. When the thin wall needs to be vertically pressed after replacing a workpiece with a larger size, the operator can first pull out the fixing pin, then pull up the first mounting shaft 32 to the appropriate position, and then insert the fixing pin into the positioning pin holes 321 of the second mounting shaft 34 and the first mounting shaft 32 in sequence, so as to fix the height of the first mounting shaft 32. Then, the second motor is started to finely adjust the height of the abutting assembly 31 to accurately press on the thin wall. When the thin wall needs to be vertically pressed after replacing a workpiece with a smaller size, the operator first pulls out the fixing pin and presses the first mounting shaft 32 downward to the appropriate position, and then inserts the fixing pin into the positioning pin holes 321 of the second mounting shaft 34 and the first mounting shaft 32 in sequence, so as to fix the height of the first mounting shaft 32. Then, the second motor is started to finely adjust the height of the abutting assembly 31 to accurately press on the thin wall. By arranging the second mounting shaft 34 and the positioning pin hole 321, the operator can quickly adjust the height of the abutting assembly 31, improving the work efficiency.

[0047] Further, as shown in Figure 1 and Figure 2 The clamping seat 1 is provided with a fixed lug plate 14. Specifically, the bottom of the clamping seat 1 is provided with a plurality of fixed lug plates 14, and the fixed lug plate 14 is provided with a bolt through hole. The operator can use a bolt to fixedly connect the fixed lug plate 14 with the machining table, improving the stability of the workpiece clamping device during machining, and facilitating disassembly.

[0048] The embodiment also provides a workpiece clamping method using the above workpiece clamping device, comprising the following steps:

[0049] S1, fixing the clamping seat 1 at a specified position of the machining table. Specifically, the operator uses a bolt to fix the clamping seat 1 at a specified position on the machining table. At this time, the vertical positioning groove 11 and the vertical wall surface opposite to the clamping plate 21 are aligned with the specified position of the machining table, so as to ensure that the single clamping plate 21 in the vertical positioning groove 11 aligns the thin wall with the standard position of machining when clamping the thin wall of the workpiece, thereby improving the machining quality of the workpiece.

[0050] S2, one of the thin walls of the workpiece is placed into the vertical positioning slot 11, and the remaining thin walls of the workpiece are placed into at least one vertical clamping slot 12 respectively, and the clamping plate 21 in the vertical positioning slot 11 is used to tightly abut the thin wall of the workpiece against the wall surface of the vertical positioning slot 11. Specifically, the operator places one of the thin walls of the workpiece into the vertical positioning slot 11, and correspondingly places the remaining thin walls into the vertical clamping slot 12, so as to complete the placement of the workpiece; then the operator uses the clamping plate 21 to tightly abut the thin wall in the vertical positioning slot 11 against the wall surface.

[0051] S3, the thin wall of the workpiece is clamped by using the clamping plate 21 in the vertical clamping slot 12. Specifically, the operator clamps the thin wall in the vertical clamping slot 12 by using the clamping plate 21, so as to complete the clamping and fixing of the workpiece in the horizontal direction.

[0052] S4, the height of the abutting assembly 31 is adjusted according to the size of the thin wall of the workpiece, and the abutting assembly 31 is used to abut against the upper end surface of the thin wall of the workpiece. Specifically, the operator adjusts the height of the abutting assembly 31 and vertically downwardly abuts the abutting assembly 31 against the thin wall, so as to complete the final clamping and fixing of the workpiece.

[0053] By using the workpiece clamping method, the thin wall of the special-shaped or complex workpiece with multiple thin walls is first placed into the vertical positioning slot 11 for positioning and pre-tightening, so that the workpiece is fixed at a predetermined position of the machining table surface, and the workpiece can be in the same standard during each machining process; then the thin wall in the vertical clamping slot 12 is horizontally clamped and fixed by the clamping plate, and the thin wall is vertically clamped and fixed by using the vertical clamping unit 3, so as to fix the workpiece, and the stability during the machining process of the workpiece is improved.

[0054] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present application. It is unnecessary and impossible to enumerate all the embodiments. Any modification, equivalent substitution and improvement within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. A workpiece clamping device, characterized in that, include: The clamping base (1) has a vertical positioning groove (11) and at least one vertical clamping groove (12) on it. The vertical positioning groove (11) and at least one vertical clamping groove (12) are used to accommodate the thin wall of the workpiece. The workpiece clamping device can clamp workpieces with multiple thin wall structures. A horizontal clamping unit (2) includes clamping plates (21) disposed in the vertical positioning groove (11) and the vertical clamping groove (12). One clamping plate (21) is disposed in the vertical positioning groove (11), and two clamping plates (21) are disposed opposite to each other in the vertical clamping groove (12). The clamping plate (21) in the vertical positioning groove (11) can approach the thin wall of the workpiece along the X-axis to press the thin wall of the workpiece against the wall surface of the vertical positioning groove (11). The two clamping plates (21) in the vertical clamping groove (12) can approach each other along the X-axis to abut against and clamp the thin wall of the workpiece on both sides of the thin wall of the workpiece, respectively. A vertical clamping unit (3) includes an abutment component (31), which is height-adjustably disposed on the clamping seat (1) and is capable of abutting against the upper end face of the thin wall of the workpiece in the vertical direction. The horizontal clamping unit (2) further includes a clamping transmission assembly (22), which includes a worm (221), a gear (222), and a connecting mechanism (223). The worm (221) is mounted on the clamping seat (1) and meshes with the gear (222). One end of the connecting mechanism (223) is connected to the gear (222), and the other end of the connecting mechanism (223) is connected to the clamping plate (21). The rotation of the worm (221) can drive the gear (222) to move along the X-axis, so that the connecting mechanism (223) drives the clamping plate (21) to move along the X-axis. Two adjacent sets of clamping transmission assemblies (22) can be arranged vertically.

2. The workpiece clamping device according to claim 1, characterized in that, The bottom surface of the vertical positioning groove (11) and the bottom surface of the vertical clamping groove (12) are both provided with a first sliding groove (13) along the X-axis direction. The clamping plate (21) is provided with a protrusion (211) that matches the first sliding groove (13). The protrusion (211) is disposed in the first sliding groove (13) and slides in cooperation with the first sliding groove (13).

3. The workpiece clamping device according to claim 1, characterized in that, Multiple connecting shafts (212) are evenly arranged on the clamping plate (21), and all of the multiple connecting shafts (212) are connected to the connecting mechanism (223).

4. The workpiece clamping device according to claim 1, characterized in that, The horizontal clamping unit (2) also includes a rocker arm (23), which is disposed on the worm (221).

5. The workpiece clamping device according to claim 1, characterized in that, The clamping transmission assembly (22) further includes a limiting shaft and a bearing. The limiting shaft passes through the gear (222) and is keyed to the gear (222). The bearing is sleeved on the limiting shaft. The limiting shaft cooperates with the inner ring of the bearing, and the outer ring of the bearing cooperates with the connecting mechanism (223). A second sliding groove is provided on the clamping seat (1) along the X-axis direction. The end of the limiting shaft extends into the second sliding groove and slides with the second sliding groove.

6. The workpiece clamping device according to claim 1, characterized in that, The vertical clamping unit (3) further includes a first mounting shaft (32) and a rotating block (33). The first mounting shaft (32) is connected to the clamping seat (1). The rotating block (33) is rotatably mounted on the first mounting shaft (32). The abutting component (31) is height-adjustably mounted on the rotating block (33).

7. The workpiece clamping device according to claim 6, characterized in that, The vertical clamping unit (3) further includes a second mounting shaft (34), which is disposed on the clamping seat (1). The first mounting shaft (32) is movably inserted in the second mounting shaft (34). Positioning pin holes (321) are provided on both the first mounting shaft (32) and the second mounting shaft (34) along the height direction.

8. The workpiece clamping device according to claim 1, characterized in that, The clamping seat (1) is provided with a fixing ear plate (14).

9. A workpiece clamping method, characterized in that, Using the workpiece clamping device as described in any one of claims 1-8 includes the following steps: S1. Fix the clamping seat (1) at a designated position on the processing table; S2. Place one of the thin walls of the workpiece into the vertical positioning groove (11), and place the remaining thin walls of the workpiece into at least one of the vertical clamping grooves (12), and use the clamping plate (21) in the vertical positioning groove (11) to press the thin walls of the workpiece against the wall surface of the vertical positioning groove (11). S3. Use the clamping plate (21) in the vertical clamping groove (12) to clamp the thin wall of the workpiece; S4. Adjust the height of the abutting component (31) according to the size of the thin wall of the workpiece, and use the abutting component (31) to abut against the upper end face of the thin wall of the workpiece.

Images