Locking device facilitating rapid clamping

Abstract

The invention relates to the field of locking devices, solves the problem that an existing locking device is tedious in clamping operation, and provides a locking device facilitating rapid clamping, the locking device comprises a placing plate, a guide column, an elastic piece, a pressing plate and a pressing cam, and the placing plate is provided with a groove for placing a workpiece; the guide column is arranged on the placing plate in a penetrating manner; the elastic piece is arranged on the guide column in a sleeving mode. The guide columns are sleeved with the pressing plate, the pressing plate is located at the end, away from the containing plate, of the elastic piece, and the elastic piece abuts against or is connected with the pressing plate; the guide column penetrates through the pressing plate and is hinged to the pressing cam through a rotating shaft, and the arc-shaped portion of the pressing cam abuts against the pressing plate. Through cooperation of the pressing cam, the elastic piece and the pressing plate, the function of adjusting the distance between the placing plate and the pressing plate through rotation of the pressing cam is achieved; when the locking device does not clamp the workpiece, the pressing plate is far away from the placing plate under the action of resilience force of the elastic piece, and the operation of placing the workpiece in the groove is convenient and fast.

Description

Technical Field

[0001] The invention relates to the field of locking devices, and in particular to a locking device which is convenient for quick clamping. Background Art

[0002] The blade of a scraper is generally sharp, and the processing of the blade requires a certain degree of flatness, such as no gaps greater than 3μm, otherwise it will seriously affect the use. For some workpieces that are long but very thin, such as non-metallic materials with a single workpiece length of 1300mm and a thickness of only 1mm, the original processing method is to press and hold a single piece for profiling, which is troublesome to clamp and takes a long time to process. During processing, the blade is prone to gaps, which is time-consuming and labor-intensive, and the qualified rate is low. Although customized tools can also be used, the cost of customized tools is high, and the blade is prone to breakage during machining of the workpiece, and the gap makes it unusable. Now there is an urgent need for a device that can quickly remove the excess on a CNC machine tool and then grind it into place on a grinder. Summary of the invention

[0003] The purpose of the present invention is to provide a locking device that is easy to clamp quickly, so as to solve the problem that the clamping operation of the existing locking device is complicated.

[0004] The embodiments of the present invention are implemented by the following technical solutions:

[0005] A locking device that is easy to clamp quickly, comprising: a placement plate, a guide column, an elastic member, a pressure plate and a clamping cam, the placement plate being provided with a groove for placing a workpiece; the guide column being passed through the placement plate; the elastic member being sleeved on the guide column; the pressure plate being sleeved on the guide column, the pressure plate being located at an end of the elastic member away from the placement plate, the elastic member being in contact with or connected to the pressure plate; the guide column passing through the pressure plate and being hinged to the clamping cam through a rotating shaft, the arcuate portion of the clamping cam being in contact with the pressure plate, and the center of a circle corresponding to the arcuate portion being deviated from the central axis of the rotating shaft.

[0006] Preferably, the arc-shaped portion includes at least one incremental arc segment; and as the incremental arc segment extends from one end thereof close to the pressure plate to the other end, the distance from the rotating shaft gradually increases.

[0007] Preferably, the increasing arc segment includes a first arc segment and a second arc segment, and the average distance between the points on the first arc segment and the rotating shaft is smaller than that of the second arc segment; the line between the abutment point between the first arc segment and the pressure plate and the axis of the rotating shaft is located on the side of the spring close to the clamping direction.

[0008] Preferably, a line connecting a contact point between the second arc segment and the pressure plate and an axis of the rotating shaft is located on a side of the spring away from a pressing direction.

[0009] Preferably, the locking device comprises: a pressure rod, the pressure rod is connected to the clamping cam, and the free end of the pressure rod is located at an end of the rotating shaft away from the first arc segment.

[0010] Preferably, the pressure plate includes: a main board and a first side board, a gap is left between the main board and the placement board, and the end of the elastic member away from the placement board is abutted or connected to the main board; the first side board is connected to the main board, and the end of the first side board away from the main board extends toward the groove.

[0011] Preferably, a limiting plate is provided at one end of the placement plate away from the groove, and the pressure plate further comprises: a second side plate, the second side plate and the first side plate are respectively arranged at two opposite ends of the main board, and the second side plate abuts against the limiting plate.

[0012] Preferably, the locking device further comprises: a base, wherein the base is connected to one end of the placement plate via a connecting column, and the other end of the placement plate is connected to the base; the base, the connecting column and the placement plate form a triangular structure.

[0013] Preferably, a plurality of positioning steps are provided on the side wall of the groove, the widths of the plurality of positioning steps are the same, the top walls of the plurality of positioning steps are parallel, and an end of the groove away from the positioning steps is an open end.

[0014] Preferably, the corner edges of the plurality of positioning steps are located in the same plane and the plane is parallel to the mounting surface of the base.

[0015] The present invention has at least the following beneficial effects:

[0016] The present invention utilizes the cooperation of a clamping cam, an elastic member and a pressure plate to realize the function of adjusting the distance between the placement plate and the pressure plate by rotating the clamping cam; when the locking device does not clamp the workpiece, the pressure plate is away from the placement plate under the action of the rebound force of the elastic member, and the operation of placing the workpiece in the groove is convenient and quick; when the workpiece is placed, the clamping cam is rotated to make the pressure plate approach and clamp the workpiece, and the rebound force of the elastic member cooperates with the arc-shaped portion on the clamping cam, so that when the workpiece is clamped, the clamping cam is self-locking, and when the lock needs to be released, the clamping cam can be rotated in the opposite direction, and the locking and unlocking operations of the workpiece are convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic diagram of the structure of a locking device for quick clamping;

[0019] Figure 2 is a cross-sectional view of the locking device;

[0020] Figure 3 is a schematic diagram of the operation of the locking device;

[0021] Figure 4 is a first force diagram of the pressing cam;

[0022] Figure 5 is the second force diagram of the compression cam;

[0023] Figure 6 A schematic diagram of the structure of the positioning step;

[0024] Figure 7 It is a plane diagram of the corner edge;

[0025] Icons: 1-placing plate, 11-groove, 111-positioning step, 1111-corner edge, 12-limiting plate, 2-guide column, 3-elastic member, 4-pressure plate, 41-main board, 42-first side plate, 43-second side plate, 5-pressing cam, 51-arc portion, 511-increasing arc segment, 5111-first arc segment, 5112-second arc segment, 6-rotating shaft, 7-pressure rod, 8-base, 9-connecting column, 10-workpiece. DETAILED DESCRIPTION

[0026] In order to make the purpose, method scheme and advantages of the embodiments of the present invention clearer, the method scheme in the embodiments of the present invention is clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] Example 1: Figure 1-3 As shown, a locking device that is easy to clamp quickly includes: a placement plate 1, a guide column 2, an elastic member 3, a pressure plate 4 and a clamping cam 5, the placement plate 1 is provided with a groove 11 for placing a workpiece 10; the guide column 2 is penetrated by the placement plate 1; the elastic member 3 is sleeved on the guide column 2; the pressure plate 4 is sleeved on the guide column 2, the pressure plate 4 is located at the end of the elastic member 3 away from the placement plate 1, and the elastic member 3 is abutted or connected to the pressure plate 4; the guide column 2 passes through the pressure plate 4 and is hinged to the clamping cam 5 through the rotating shaft 6, the arc portion 51 of the clamping cam 5 is abutted against the pressure plate 4, and the center of the circle corresponding to the arc portion 51 deviates from the central axis of the rotating shaft 6.

[0028] In the specific implementation process, when machining the tool, due to the thin thickness of the cutting edge, a gap is easily formed during the machining process. The existing technology mostly adopts the profiling method, and the qualified rate of the processed products is low. Therefore, the applicant hopes to directly change the profiling process into plane machining or side edge machining, and thus conceives a locking device for plane machining or side edge machining, and through structural improvement, the clamping operation of the locking device is convenient and quick.

[0029] like Figure 2 As shown, the placement plate 1 and the pressing plate 4 are both provided with through holes for the guide column 2 to pass through, and a stop block may be provided at one end of the guide column 2 away from the pressing cam 5, and the stop block cannot enter the through hole. The through hole of the placement plate 1 may include small holes and large holes that are interconnected, and the bottom wall of the large hole is used for connecting the elastic member 3. The elastic member 3 may be a spring. The central axis of the rotating shaft 6 refers to the line connecting the centers of the circles of each cross section of the rotating shaft 6.

[0030] The placement plate 1, as the base of the entire device, is provided with a groove 11 specifically for placing the workpiece 10 to ensure that the workpiece 10 can be accurately positioned. The guide column 2 is inserted into the placement plate 1 to provide a guide path for the pressing plate 4 to move up and down. One of the functions of the elastic member 3 is to provide a rebound force so that the pressing plate 4 can automatically reset. The pressing plate 4 directly contacts and presses the workpiece 10 in the working state to achieve the fixing function.

[0031] Operation process: Figure 3 As shown, Figure 3 The black part is a tool or a grinder. Place the workpiece 10 to be processed into the groove 11 of the placement plate 1, rotate the clamping cam 5 until the pressure plate 4 completely clamps the workpiece 10, and then mill and grind the workpiece 10. After the operation is completed, rotate the clamping cam 5 in the opposite direction to release the pressure of the pressure plate 4 and take out the workpiece 10. Repeat the above steps to operate the next workpiece 10. Since the angle of the blade is determined by the process, to achieve plane processing, the workpiece 10 can be tilted when it is placed. When milling, it can be directly Figure 3 As shown in B, horizontal processing, remove the dotted part, and the remaining part is the blade with the required angle. Figure 3 When the locking device is installed on a CNC machine tool at the rotation angle shown, the machining surface of the workpiece 10 can be in a vertical state, and side edge machining can be achieved, which is not only suitable for CNC machine tools, but also for grinders. When milling on a CNC machine tool, it can be directly pressed on the machine tool workbench, and when grinding, it can be directly placed on the grinder.

[0032] like Figure 3As shown, during the rotation of the clamping cam 5, the arc portion 51 abuts against the pressing plate 4, and the distance between the point on the arc portion 51 and the rotating shaft 6 is different, so when the abutment point between the arc portion 51 and the pressing plate 4 changes, the distance between the pressing plate 4 and the placing plate 1 is different. When the pressing plate 4 locks the workpiece 10 in the groove 11, the spring is in a compressed state, so the pressing plate 4 is subjected to a force away from the placing plate 1. In addition, if the clamping cam 5 cannot rotate by an additional locking device, due to the existence of the locking device, if the force is directly directed toward the central axis of the rotating shaft 6, the clamping cam 5 is not subject to deflection force, and the clamping cam 5 has a certain stability, but the aforementioned state is only satisfied by one abutment point, and the thickness of the workpiece 10 is different, and when the pressing plate 4 is adjusted to clamp the workpiece 10, the rotation degree of the clamping cam 5 is also different, so it is difficult to ensure that when workpieces 10 of different specifications are clamped, the force of the clamping cam 5 is directed toward the central axis of the rotating shaft 6. In addition, when the force direction of the clamping cam 5 is toward the central axis of the rotating shaft 6, the clamping cam 5 is prone to reverse rotation under the action of external force, and then the pressure plate 4 is further loosened under the action of the elastic member 3, so that the stability of the clamping cam 5 in the clamped state is poor. This embodiment improves the structure of the arc portion 51, so that when the arc portion 51 abuts against the placement plate 1, the force direction of the abutment point forms a certain angle with the line connecting the abutment point and the rotation center of the rotating shaft 6, so that the clamping cam 5 is subjected to a deflection force, and the abutment points that meet the conditions are not unique and can be continuous, so it can be applied to workpieces 10 of different specifications. When the pressure plate 4 clamps the workpiece 10, the deflection force direction of the clamping cam 5 is grooved in the clamping direction, so that the self-locking of the clamping cam 5 can be achieved.

[0033] Embodiment 2: In order to achieve the continuity of the process of the pressing plate 4 approaching or moving away from the placing plate 1, improvements are made on the basis of embodiment 1, such as Figure 2 As shown, in this embodiment, the arc portion 51 includes at least one incremental arc segment 511 ; as the incremental arc segment 511 extends from one end close to the pressure plate 4 to the other end, the distance from the rotating shaft 6 gradually increases.

[0034] In the specific implementation process, the contact point between the clamping cam 5 and the pressing plate 4 can always be on the increasing arc segment 511. With the positive or reverse rotation of the clamping cam 5, the pressing plate 4 will be in a state of approaching or moving away from the placement plate 1, and will not switch between the two states, so as to achieve the continuity of the single-direction movement process of the pressing plate 4. The curvatures of various locations on the arc portion 51 can be the same or different.

[0035] Exemplarily, when the curvature of the arc portion 51 is the same at all places, the center of the arc portion 51 deviates from the central axis of the rotating shaft 6 and is located on the side of the rotating shaft 6 away from the clamping direction. The clamping direction refers to the rotation direction of the clamping cam 5, for example Figure 3As shown, when the clamping cam 5 rotates clockwise, the arc portion 51 moves to the left, and the pressing plate 4 moves toward the placing plate 1 , and the aforementioned center of the circle is located to the right of the rotating shaft 6 .

[0036] The curvature of each location on the arc-shaped portion 51 may be different, as shown in the following embodiments 3-4.

[0037] Embodiment 3: In order to realize the simple release of the locking state of the pressure plate 4, an improvement is made on the basis of Embodiment 2, such as Figure 4 As shown, in this embodiment, the increasing arc segment 511 includes a first arc segment 5111 and a second arc segment 5112, and the average distance between the points on the first arc segment 5111 and the rotating shaft 6 is smaller than that of the second arc segment 5112; the line between the abutment point between the first arc segment 5111 and the pressure plate 4 and the axis of the rotating shaft 6 is located on the side of the spring close to the clamping direction.

[0038] During the specific implementation process, Figure 4 The force analysis in this paper is based on the installation angle of the locking device. Figure 3 The clamping direction refers to the direction in which the clamping cam 5 rotates to the left or right of the spring when the clamping plate 4 clamps the workpiece 10, for example Figure 4 The middle pressing direction is to the left of the spring rebound force a. Figure 4 Only the first arc segment 5111 is shown in the figure. The average distance between the first arc segment 5111 and the rotating shaft 6 is smaller than the second arc segment 5112. That is, in the process of the pressing cam 5 realizing the pressing plate 4 pressing down the workpiece 10 firmly, the first arc segment 5111 contacts the pressing plate 4 first, and the second arc segment 5112 contacts the pressing plate 4 later. In the process of the first arc segment 5111 contacting the pressing plate 4, as shown in FIG. Figure 4 As shown, the pressure plate 4 is subjected to the rebound force of the spring, see Figure 4 The resultant force a is decomposed into a force component c directed toward the axis of the rotating shaft 6 and a force component b perpendicular to the force component c. The existence of the force component b can cause the clamping cam 5 to be subjected to a deflection force of counterclockwise rotation, and then when the clamping cam 5 is rotated to release the lock of the workpiece 10, when the abutment point between the arc portion 51 and the pressure plate 4 moves to the first arc segment 5111, under the action of the spring rebound force, the lock of the workpiece 10 is released more conveniently and quickly, and in a natural state, the existence of the spring rebound force prevents the clamping cam 5 from deflecting due to its own weight or the weight of the pressure rod 7, and there is always a certain distance between the pressure plate 4 and the placement plate 1, which is convenient for the quick placement of the workpiece 10 in the groove 11.

[0039] Embodiment 4: In order to better realize the self-locking of the pressing cam 5, improvements are made on the basis of Embodiment 3, such as Figure 5 As shown, in this embodiment, the line between the contact point between the second arc segment 5112 and the pressure plate 4 and the axis of the rotating shaft 6 is located on the side of the spring away from the pressing direction.

[0040] During the specific implementation process, Figure 5 The force analysis in this paper is based on the installation angle of the locking device. Figure 3 The clamping direction refers to the direction in which the clamping cam 5 rotates to the left or right of the spring when the clamping plate 4 clamps the workpiece 10, for example Figure 5 The clamping direction is the left side of the spring rebound force a. The line between the abutment point between the second arc segment 5112 and the pressure plate 4 and the axis of the rotating shaft 6 can be regarded as the c direction. Through the structural design, when the bottom of the pressure plate 4 presses the workpiece 10, the abutment point between the clamping cam 5 and the pressure plate 4 is located in the second arc segment 5112. At this time, the component force of the spring rebound force a can be regarded as the component force b toward the axis of the rotating shaft 6 and the component force c perpendicular to the component force b. Under the action of the component force c, the clamping cam 5 is subjected to a deflection force in the direction of the clamping plate 4, thereby realizing the self-locking of the clamping cam 5 under the action of the spring, and when the clamping cam 5 is rotated in the opposite direction, the component force c is overcome until the abutment point is located in the first arc segment 5111. With the cooperation of the first arc segment 5111 and the second arc segment 5112, the self-locking and unlocking of the clamping cam 5 are simple and fast, which greatly improves the processing efficiency.

[0041] Embodiment 5: In order to simply realize the rotation of the pressing cam 5, an improvement is made on the basis of Embodiment 3, such as Figure 1 As shown, in this embodiment, the locking device includes: a pressure rod 7, the pressure rod 7 is connected to the clamping cam 5, and the free end of the pressure rod 7 is located at an end of the rotating shaft 6 away from the first arc segment 5111.

[0042] In the specific implementation process, if the length of the workpiece 10 is long, in order to increase the pressing stability of the pressing plate 4 on the workpiece 10, Figure 1 As shown, multiple sets of clamping cams 5 and pressure rods 7 are provided to prevent the workpiece 10 from being offset due to the small clamping force on some parts of the workpiece 10 during processing. Figure 1 As shown, when the pressing rod 7 rotates downward, the pressing plate 4 approaches the placing plate 1 , and when the pressing plate 4 rotates upward, the pressing plate 4 moves away from the placing plate 1 .

[0043] Embodiment 6: In order to better process a thinner workpiece 10, improvements are made on the basis of Embodiments 1-5, such as Figure 2 As shown, in this embodiment, the pressure plate 4 includes: a main board 41 and a first side board 42, a gap is left between the main board 41 and the placement board 1, and the end of the elastic member 3 away from the placement board 1 is abutted or connected to the main board 41; the first side board 42 is connected to the main board 41, and the end of the first side board 42 away from the main board 41 extends toward the groove 11.

[0044] During the specific implementation process, the elastic member 3 can be a spring, and the wall surface where the spring is connected to the placement plate 1 can be set as a plane, for example, the cross-section of the spring end near the placement plate 1 is semicircular. The wall surface where the spring is connected to the pressure plate 4 can also be set as a plane, for example, the cross-section of the spring end near the pressure plate 4 is semicircular. If the bottom wall of the pressure plate 4 is on a plane, and there needs to be a certain distance between the pressure plate 4 and the placement plate 1, the thickness of the workpiece 10 needs to be greater than the depth of the groove 11 to achieve the abutment between the pressure plate 4 and the workpiece 10, which is not conducive to the processing of thinner workpieces 10. In addition, after a part of the workpiece 10 protrudes from the mouth of the groove 11, the workpiece 10 may be offset during the side edge processing. For example, when Figure 2 When the middle base 8 is set vertically, the workpiece 10 needs to be supported by the groove 11. If the supporting force of the groove 11 on the workpiece 10 is not completely distributed on the bottom wall of the workpiece 10, the position stability of the workpiece 10 is poor, and thus it is easy to deviate when subjected to force during processing. In this embodiment, a first side plate 42 is set on the side of the pressing plate 4 close to the groove 11. The bottom wall of the first side plate 42 is closer to the placement plate 1 than the bottom wall of the main plate 41, and the projection of the first side plate 42 toward the placement plate 1 completely falls into the groove 11, so that the first side plate 42 will not directly abut against the placement plate 1, causing it to affect the movement of the pressing plate 4.

[0045] Embodiment 7: In order to increase the movement stability and smoothness of the pressing plate 4, improvements are made on the basis of Embodiment 6, such as Figure 2 As shown, in this embodiment, a limiting plate 12 is provided at one end of the placing plate 1 away from the groove 11, and the pressing plate 4 also includes: a second side plate 43, the second side plate 43 and the first side plate 42 are respectively arranged at two opposite ends of the main board 41, and the second side plate 43 abuts against the limiting plate 12.

[0046] During the specific implementation process, the width of the limit plate 12 and the second side plate 43 can be designed to meet the principle that the two are always in contact during the rotation of the clamping cam 5. Because the pressure plate 4 is in point contact when the pressure cam 5 is pressed down, the force-bearing surface is very small, so the movement stability of the pressure plate 4 after the force is applied needs to be improved. This embodiment further limits the deflection of the pressure plate 4 through the cooperation between the second side plate 43 and the limit plate 12, avoids the increase of the interaction force between the pressure plate 4 and the guide column 2 after the pressure plate 4 is deflected, and improves the stability and smoothness of the movement of the pressure plate 4.

[0047] Embodiment 8: In order to facilitate the guarantee of the cutting edge angle when processing the workpiece 10, an improvement is made on the basis of Embodiment 7, such as Figure 1-2 As shown, in this embodiment, the locking device also includes: a base 8, which is connected to one end of the placement plate 1 through a connecting column 9, and the other end of the placement plate 1 is connected to the base 8; the base 8, the connecting column 9 and the placement plate 1 form a triangular structure.

[0048] In the specific implementation process, the base 8 can be used as a connector between the locking device and other equipment. For example, when the locking device is installed, it is connected to a CNC machine tool through the base 8. After installation, the base 8 can remain horizontal or vertical. The triangular structure can make the placement plate 1 tilt according to a preset angle. In order to adjust the tilt angle, the connecting column 9 can also be an electric telescopic rod, and the free end of the electric telescopic rod is slidably connected to the bottom wall of the placement plate 1. The setting of the tilt angle can be determined according to the edge angle. For example, when the end of the workpiece 10 needs to be processed into a 30° edge, the angle between the placement plate 1 and the base 8 is set to 30°, so that when the workpiece 10 is processed horizontally or side edge, no matter how the angle of the edge changes, the movement direction of the tool or the mold is vertical or horizontal, and there is no need to adjust its angle. The control requirements for the processing device are lower, and it is not easy to cause defects or unqualified products due to insufficient control accuracy of the processing device.

[0049] Embodiment 9: In order to realize one-time processing of multiple workpieces 10 and improve the processing efficiency of the workpieces 10, improvements are made on the basis of Embodiment 8, such as Figure 3 and Figure 6 As shown, in this embodiment, the side wall of the groove 11 is provided with a plurality of positioning steps 111 , the widths of the plurality of positioning steps 111 are the same, the top walls of the plurality of positioning steps 111 are parallel, and the end of the groove 11 away from the positioning steps 111 is an open end.

[0050] In the specific implementation process, the number of positioning steps 111 can be consistent with the number of workpieces 10 processed at one time. If the height of the positioning steps 111 is greater than the thickness of the workpiece 10, it is difficult for adjacent workpieces 10 to abut against each other in a parallel state. Therefore, the height of the positioning steps 111 can be equal to or less than the thickness of the workpiece 10. The same width of the positioning steps 111 and the parallel surfaces of the top walls of the positioning steps 111 can ensure that when processing multiple workpieces 10 at one time, such as Figure 3 As shown in the detail view at B in the figure, the dotted line portion removed from each workpiece 10 is the same, thereby ensuring the processing consistency of the workpiece 10. The open end refers to Figure 3 As shown, there is no wall at the upper end of the groove 11, which facilitates the placement and removal of the workpiece 10.

[0051] Embodiment 10: In order to ensure that the machining angle of the cutting edge of the workpiece 10 is consistent with the angle between the placement plate 1 and the base 8, an improvement is made on the basis of Embodiment 9, such as Figure 6-7 As shown, in this embodiment, the corner edges 1111 of the plurality of positioning steps 111 are all located in the same plane and the plane is parallel to the installation surface of the base 8 .

[0052] In a specific implementation process, the mounting surface of the base 8 is the contact surface between the base 8 and the processing equipment when the base 8 is mounted or placed on the processing equipment. Figure 6 As shown, the corner edge 1111 refers to the edge of the upper surface of the positioning step 111 away from the higher step. The plane where the corner edges 1111 of the positioning steps 111 are located can be seen in FIG. Figure 7 As shown in the dashed line. The base 8 can be as Figure 1 As shown, the whole is a rectangular parallelepiped. If the length of the workpiece 10 is long, a base 8 needs to have a larger area to support the placement plate 1, which limits the installation or placement of the base 8 on the existing processing equipment. Therefore, the base 8 can be as follows Figure 1 As shown, there are multiple bases 8, each of which is provided with a connecting column 9. A clamping cam 5 can be provided between adjacent bases 8. When the plane shown by the dotted line is parallel to the mounting surface of the base 8, it can be ensured that the cutting edge angle formed by the workpiece 10 after processing is the angle between the placing plate 1 and the base 8.

[0053] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A locking device that facilitates quick clamping, characterized in that: include: A placement plate, wherein the placement plate is provided with a groove for placing the workpiece; A guide post, the guide post being arranged through the placement plate; An elastic member, wherein the elastic member is sleeved on the guide column; A pressing plate, the pressing plate is sleeved on the guide column, the pressing plate is located at an end of the elastic member away from the placement plate, and the elastic member is in contact with or connected to the pressing plate; A clamping cam, wherein the guide column passes through the pressure plate and is hinged to the clamping cam through a rotating shaft, an arc portion of the clamping cam abuts against the pressure plate, and a center of a circle corresponding to the arc portion deviates from the central axis of the rotating shaft.

2. The locking device for quick clamping according to claim 1, characterized in that: The arc-shaped portion includes at least one incremental arc segment; in the process of extending the incremental arc segment from one end close to the pressure plate to the other end, the distance between the incremental arc segment and the rotating shaft gradually increases.

3. The locking device for quick clamping according to claim 2, characterized in that: The increasing arc segment includes a first arc segment and a second arc segment, and the average distance between the points on the first arc segment and the rotating shaft is smaller than that of the second arc segment; the line between the abutment point between the first arc segment and the pressure plate and the axis of the rotating shaft is located on the side of the spring close to the clamping direction.

4. The locking device for quick clamping according to claim 3, characterized in that: A line between a contact point between the second arc segment and the pressure plate and the axis of the rotating shaft is located on a side of the spring away from the pressing direction.

5. The locking device for quick clamping according to claim 3, characterized in that: include: A pressure rod is connected to the pressing cam, and a free end of the pressure rod is located at an end of the rotating shaft away from the first arc segment.

6. The locking device for quick clamping according to any one of claims 1 to 5, characterized in that: The pressing plate comprises: A main board, a gap is left between the main board and the placement board, and one end of the elastic member away from the placement board is in contact with or connected to the main board; A first side plate is connected to the main plate, and one end of the first side plate away from the main plate extends toward the groove.

7. The locking device for quick clamping according to claim 6, characterized in that: The end of the placement plate away from the groove is provided with a limiting plate, and the pressing plate further comprises: The second side plate is disposed at two opposite ends of the main board with the first side plate, and the second side plate is in contact with the limiting plate.

8. The locking device for quick clamping according to claim 7, characterized in that: Also includes: A base, wherein the base is connected to one end of the placement plate through a connecting column, and the other end of the placement plate is connected to the base; The base, the connecting column and the placement plate form a triangular structure.

9. The locking device for quick clamping according to claim 8, characterized in that: The side wall of the groove is provided with a plurality of positioning steps, the widths of the plurality of positioning steps are the same, the top walls of the plurality of positioning steps are parallel, and the end of the groove away from the positioning steps is an open end.

10. The locking device for quick clamping according to claim 9, characterized in that: The corner edges of the plurality of positioning steps are all located in the same plane and the plane is parallel to the mounting surface of the base.

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