A tool holder positioning device

Abstract

The present application relates to the technical field of tool clamping, and specifically discloses a tool clamping positioning device, which comprises a clamping assembly for clamping a workpiece and a transfer assembly for transferring the workpiece, the transfer assembly comprising a transfer seat and a pair of transfer clamping plates rotatably installed on the transfer seat, and the clamping assembly comprising a receiving plate provided with a clamping groove, a clamping rod slidingly assembled on the receiving plate, a first push plate and a second push plate slidingly assembled on the receiving plate, and an intermediate piece cooperating with the first push plate and the clamping rod, wherein a rotating rod for driving the first push plate and the second push plate to move in opposite directions is rotatably arranged between the first push plate and the second push plate, and the second push plate is located between the clamping groove and the first push plate; when the transfer clamping plates move close to the receiving plate, they are in an open or closed state respectively; the tool clamping positioning device has the effect of improving machining precision.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tool clamping, and in particular to a tool clamping positioning device. BACKGROUND

[0002] In the tool machining process, the assembly of cutting tools and tool shanks is one of the core processes, which essentially integrates the tool body with cutting function and the tool shank interface for connecting the machining equipment to form a stable structure and performance matching integrated functional unit, providing a foundation for subsequent machining operations. The assembly process usually relies on automatic assembly equipment to complete efficient mass production, and the specific process needs to be realized through the cooperation of tool clamping devices and transfer equipment. First, the tool clamping device clamps the workpiece to be assembled and transports it to the specified assembly station according to the preset program; then, the transfer equipment grabs the workpiece on the clamping device and smoothly transfers it to another assembly machining station to complete the assembly operation of the workpiece; after assembly is completed, the transfer equipment grabs the assembled integrated workpiece again and returns it to the tool clamping device; finally, the clamping device carries the assembled workpiece to the next process, and through the automatic circulation of the above clamping and transporting, transferring and assembling, and returning and transporting, the continuous operation of tool batch assembly is realized.

[0003] The patent document with publication number CN107685246B discloses a tool clamping device, which includes a mounting bracket and a clamping mechanism arranged on the mounting bracket. The clamping mechanism includes two symmetrically arranged clamping plates, a tool loosening and shank pressing mechanism, and a conical limiting block. The middle parts of the two clamping plates are respectively rotationally connected to the mounting bracket, the front ends of the two clamping plates form a semi-annular tool clamping part, the front end of the tool clamping part forms an opening for the tool to enter, and the tail ends of the two clamping plates are connected by a clamping spring. The opposite sides of the middle parts of the two clamping plates form a conical groove, the small end of the conical groove is arranged upward, the conical limiting block is sleeved in the conical groove, the positioning rod at the bottom of the conical limiting block is slidingly sleeved in the corresponding positioning hole of the mounting bracket and is supported by a return spring, the top rod at the top of the conical limiting block extends above the clamping plate and abuts against one end of the tool loosening and shank pressing mechanism, and the other end of the tool loosening and shank pressing mechanism is rotationally connected to the top of the rotating seat on the mounting bracket.

[0004] The above-mentioned existing technology is a conventional tool clamping device commonly used in tool assembly scenarios, and its core is to form a ring-shaped tool clamping part by surrounding two clamping plates to achieve clamping and positioning of the workpiece. The specific operation process is as follows: the workpiece to be clamped is pushed into the tool clamping part along the axial direction from the opening at the front end of the tool clamping part, the opening end of the tool clamping part is passively and elastically expanded under the radial extrusion of the workpiece, and after the workpiece completely enters the preset clamping area inside the tool clamping part, the opening end is tightened by its elastic reset, and clamping is achieved by the adhesion of the inner wall to the surface of the workpiece.

[0005] However, this solution also has the following problems: During the process of pushing the workpiece into the clamping part, the side of the workpiece needs to directly abut against the edge of the opening end of the clamping part and slide relative to it. The opening action is achieved by overcoming the elastic preload of the opening end through friction. However, the large sliding friction generated in this process can easily cause scratches, wear, or even indentations on the surface accuracy of the workpiece side, directly affecting the dimensional accuracy and surface quality of the workpiece in subsequent processing. In addition, in long-term, high-frequency processing, the contact edge of the opening end of the clamping part will suffer severe wear due to repeated friction with the workpiece, resulting in a decrease in its elastic restoring performance and insufficient clamping preload. This leads to problems such as clamping loosening and workpiece positioning deviation, which not only reduces clamping stability but also further amplifies processing errors, seriously affecting the consistency and reliability of overall processing accuracy. Summary of the Invention

[0006] This invention provides a tool clamping and positioning device, which aims to solve the problems in related technologies where the sides of the workpiece are easily worn when clamping the workpiece, and the open end of the tool clamping part wears and loosens after long-term use, thus affecting the machining accuracy.

[0007] The tool clamping and positioning device of the present invention includes a clamping assembly for clamping a workpiece and a transfer assembly for transferring the workpiece. The transfer assembly includes a transfer seat and a pair of transfer clamps rotatably mounted on the transfer seat. The clamping assembly includes a receiving plate with a clamping groove, a locking rod slidably mounted on the receiving plate, a first push plate and a second push plate slidably mounted on the receiving plate, and an intermediate member cooperating with the first push plate and the locking rod. A rotating rod is rotatably provided between the first push plate and the second push plate for driving them to move in opposite directions. The second push plate is located between the clamping groove and the first push plate. When the transfer clamps move close to the receiving plate, they are in an open or closed state respectively: when open, the transfer clamps first abut against the first push plate and push it to move, and the locking rod is driven to separate from the workpiece through the intermediate member, and then closed to remove the workpiece from the clamping groove; when closed, the transfer clamps first abut against the second push plate and push it to move, and the first push plate is driven to move in the opposite direction through the rotating rod, and then the locking rod is driven to abut against the workpiece through the intermediate member to achieve clamping, and then open to put the workpiece into the clamping groove.

[0008] Its effect lies in achieving workpiece clamping and transfer through the cooperation of the transfer and clamping components, reducing wear on the workpiece during the process, protecting the workpiece, and improving machining accuracy. Specifically, the transfer seat moves closer to or away from the receiving plate, removing the workpiece from or placing it in the clamping slot. When removing the workpiece from the clamping slot, the transfer seat drives the opening transfer clamp to abut against the first push plate, and drives the first push plate to move. When the first push plate moves, it drives the clamping rod to separate from the workpiece through the intermediate component, releasing the restriction on the workpiece. When it is necessary to place the workpiece in the clamping slot, the closing transfer clamp moves closer to the receiving plate and abuts against the second push plate. The second push plate drives the first push plate to move in the opposite direction through the rotating rod, thereby driving the clamping rod to abut against the workpiece to clamp it. By cooperating with the transfer clamp and the first or second push plate, the position of the clamping rod can be adjusted to clamp or release the workpiece, reducing wear on the workpiece and the receiving plate during the process, improving positioning accuracy, and thus improving machining accuracy.

[0009] Preferably, the receiving plate is provided with a slide groove, and the intermediate component includes: a push rod slidably assembled in the slide groove, a top ball movably assembled on the push rod, a spring for driving the top ball to move outward in the push rod, a top groove is provided on the inner wall of the slide groove, a guide slope is provided on the side of the clamping rod, the end of the push rod slides against the guide slope, a push plate is connected to the push rod, when the push plate moves the push plate, it drives the push rod to move closer to the clamping rod, the end of the push rod cooperates with the guide slope to drive the clamping rod to move and abut against the side of the workpiece, and then the top ball moves to the top groove to fix the push rod and the clamping rod.

[0010] Its effect is that when the push plate moves, it drives the push rod to move, and the push rod moves the top ball to move. When the clamping rod moves to abut against the side of the workpiece, the top ball moves to engage with the top groove. The push rod fixes the clamping rod, so that the clamping rod and the workpiece remain in abutting state.

[0011] Preferably, the intermediate component further includes: an intermediate rod and an elastic element. The clamping rod has an intermediate groove. The intermediate rod is located on the side of the clamping rod away from the clamping groove. The intermediate rod slides with the clamping rod and extends into the intermediate groove. The elastic element is located in the intermediate groove and is connected to the intermediate rod and the inner wall of the intermediate groove respectively. The elastic element is used to drive the clamping rod to move in the direction away from the workpiece.

[0012] Its effect is that when the push rod moves away from the clamp rod, the elastic element drives the clamp rod to move away from the workpiece, so that the clamp rod separates from the workpiece and releases the restriction on the workpiece.

[0013] Preferably, the clamping groove includes a mating part and a vertical part. The mating part is semi-circular and matches the outer side of the workpiece. When the workpiece is placed, the workpiece abuts against the side wall of the mating part through the vertical part. The clamping rod is set in the vertical part.

[0014] Its effect is that by setting the clamping rod in the vertical position, when the clamping rod abuts against the workpiece, the clamping rod and the mating part can fix the workpiece in the clamping groove.

[0015] Preferably, the push plate 1 is rotatably engaged with the push rod, and the push plate 1 is provided with an auxiliary rod 1. The auxiliary rod 1 is arranged in a vertical direction, and the end of the auxiliary rod 1 that is away from the push plate 1 extends into the slide groove 1 and slides in engagement with the slide groove 1. The receiving plate is provided with a relief groove 1 that communicates with the slide groove 1. The relief groove 1 is located on the side of the slide groove 1 that is away from the push plate 2. After the workpiece is placed in the clamping groove, when the transfer clamping plate opens, it abuts against the push plate 1 and drives the auxiliary rod 1 to rotate into the relief groove 1.

[0016] Preferably, a torsion spring is provided at the connection between the auxiliary rod and the rotating rod. The torsion spring is used to drive the auxiliary rod to rotate into the slide groove. A top bead is provided on the side wall of the slide groove. A spring is provided in the receiving plate to drive the top bead to move outward.

[0017] Preferably, the auxiliary rod 1 has a guide surface 1 on the side opposite to the relief groove 1. When the torsion spring drives the auxiliary rod 1 to rotate through the relief groove 1 into the slide groove 1, the guide surface 1 abuts against the top bead 2 so that the auxiliary rod 1 passes over the top bead 2.

[0018] Preferably, an auxiliary rod 2 is provided on the push plate 2, which is arranged vertically. A slide groove 2 parallel to the slide groove 1 is opened on the receiving plate. The auxiliary rod 2 is slidably assembled in the slide groove 2. A clearance groove 2 communicating with the slide groove 2 is opened on the receiving plate. The clearance groove 2 is located on the side of the slide groove 2 away from the slide groove 1. A torsion spring is provided at the connection between the auxiliary rod 2 and the rotating rod. When the transfer clamping plate closes, it abuts against the push plate 2 to drive the auxiliary rod 2 to rotate into the clearance groove 2. After the transfer clamping plate separates from the push plate 2, the torsion spring drives the auxiliary rod 2 to rotate into the slide groove 2.

[0019] Preferably, a top bead three is provided on the side wall of the relief groove two, and a spring is provided in the receiving plate to drive the top bead three to move outward. A guide surface two is provided on the side of the auxiliary rod two away from the relief groove two. When the torsion spring drives the auxiliary rod two to rotate into the slide groove two, the guide surface two abuts against the top bead three so that the auxiliary rod two passes over the top bead three.

[0020] Preferably, a support groove is provided on the inner wall of the clamping groove, and a retaining ring is provided on the side of the workpiece. After the workpiece is placed in the clamping groove, the retaining ring enters the support groove and cooperates with the support groove to support the workpiece.

[0021] Beneficial effects:

[0022] This invention provides two push plates, a first and a second, with a rotating rod between them. This allows the first and second push plates to move synchronously in opposite directions. When the transfer clamp opens or closes, it abuts against the first and second push plates respectively, pushing them to move. The position of the clamping rod is adjusted as the first or second push plate moves, thus clamping or releasing the workpiece. This process reduces wear on the workpiece and clamping components, ensuring clamping accuracy while minimizing workpiece damage and improving processing precision. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 yes Figure 1 A schematic diagram of the structure at point A in the middle.

[0025] Figure 3 This is a schematic diagram of the structure of push plate one and push plate two in this invention.

[0026] Figure 4 This is a schematic diagram of the support groove in this invention.

[0027] Figure 5 This is a schematic diagram showing the state of the clamp and the workpiece in this invention.

[0028] Figure 6 This is a schematic diagram of the structure of the intermediate component in this invention.

[0029] Figure 7 This is a schematic diagram of the cooperation between the push rod and the locking rod in this invention.

[0030] Figure 8 yes Figure 7 A schematic diagram of the structure at point B.

[0031] Figure 9 This is a schematic diagram of the internal structure of the lever in this invention.

[0032] Figure 10 This is a schematic diagram of the fit between the top bead and the top groove in this invention.

[0033] Figure 11 This is a schematic diagram of the structure of top bead two and top bead three in this invention.

[0034] Figure label:

[0035] 01. Workpiece; 02. Retaining ring; 1. Clamping assembly; 2. Transfer assembly; 21. Transfer cylinder; 22. Transfer seat; 23. Transfer clamping plate; 3. Receiving plate; 31. Clamping groove; 311. Mating part; 312. Vertical part; 32. Slide groove one; 321. Top groove; 33. Slide groove two; 34. Relief groove one; 341. Top ball two; 35. Relief groove two; 351. Top ball three; 36. Support groove; 4. Locking rod; 41. Guide slope; 42. Intermediate groove; 5. Push plate one; 51. Auxiliary rod one; 511. Guide surface one; 6. Push plate two; 61. Auxiliary rod two; 611. Guide surface two; 7. Intermediate component; 71. Top rod; 72. Top ball one; 73. Intermediate rod; 74. Elastic component; 8. Rotating rod. Detailed Implementation

[0036] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0037] like Figures 1 to 11 As shown, the tool clamping and positioning device of the present invention includes a clamping assembly 1 and a transfer assembly 2. The clamping assembly 1 is used to clamp the tool workpiece 01 and transport the workpiece 01. The clamping assembly 1 is mounted on a conveying device, and multiple clamping assemblies 1 are evenly distributed on the conveying device. The conveying device is a conventional and mature chain conveyor in the art. After the conveying device is started, it drives each clamping assembly 1 to move sequentially along a preset track, transporting the workpiece 01 to be processed to the corresponding pick-and-place station of the transfer assembly 2. Then, the transfer assembly 2 removes the workpiece 01 from the clamping assembly 1 and transfers the workpiece 01 to the assembly processing table of the next process. After the assembly processing is completed, the transfer assembly 2 is started again to place the assembled workpiece 01 back into the original clamping assembly 1, ensuring that the placement position of the workpiece 01 is consistent with the initial clamping state. Afterwards, the conveying device continues to drive the clamping assembly 1 forward, on the one hand conveying the clamping assembly 1 carrying the assembled workpiece 01 to the unloading area, and on the other hand moving the next clamping assembly 1 carrying the workpiece 01 to be processed to the pick-and-place station of the transfer assembly 2. This cycle repeats to realize the continuous supply and assembly processing of the workpiece 01 to be processed.

[0038] Reference Figure 1 , Figure 2The transfer assembly 2 includes: a transfer cylinder 21, a transfer seat 22, and a transfer clamping plate 23. A rotating shaft is provided in the middle of the transfer seat 22. The rotating cylinder is installed on the transfer seat 22. A pair of transfer clamping plates 23 are provided, and the two transfer clamping plates 23 are rotatably assembled on the transfer seat 22. The output end of the rotating cylinder is connected to the transfer clamping plate 23 to drive the transfer clamping plate 23 to rotate. Both of the transfer clamping plates 23 adopt an arc design that adapts to the shape of the workpiece 01, and their inner sides are arranged opposite each other. When the two are closed synchronously, they can form a clamping cavity that fits the outer contour of the workpiece 01.

[0039] When workpiece 01 needs to be picked up or placed, the transfer seat 22 moves, causing the transfer clamp 23 to move closer to or away from the clamping assembly 1. Simultaneously, the transfer cylinder 21 drives the transfer clamp 23 to rotate, opening or closing. When the transfer clamp 23 places workpiece 01 into the clamping assembly 1, it opens to place workpiece 01 at the clamping assembly 1. When workpiece 01 needs to be picked up, the transfer clamp 23 moves to workpiece 01 in its open state, then closes. The clamping force is generated through the contact between its arc-shaped inner side and workpiece 01, firmly clamping workpiece 01 within the clamping assembly 1, completing the picking action. After workpiece 01 is successfully removed from the clamping assembly 1, the transfer seat 22 returns to its initial position. Then, the transfer seat 22 rotates, causing the transfer seat 22 and the clamped workpiece 01 to rotate together, moving them to the designated assembly station to prepare for subsequent assembly processes.

[0040] The transfer seat 22 is driven by a cylinder (not shown in the figure) for linear movement. The output end of the cylinder is equipped with a special carrier, and the rotating shaft is embedded inside the carrier. By extending and retracting the piston rod of the cylinder, the transfer seat 22 is controlled to move the transfer clamp 23 closer to or further away from the clamping assembly 1, so as to adjust the position of the transfer seat 22. In addition, the transfer seat 22 is driven by a motor (not shown in the figure) for rotation. When it is necessary to rotate the transfer seat 22, the motor is started to drive the transfer seat 22 to rotate, so as to move the workpiece 01 to different positions.

[0041] Reference Figure 1 The transfer component 2 adopts a symmetrical dual-group design, with the two transfer components 2 symmetrically distributed around the rotation axis of the transfer seat 22. During operation, the two transfer components 2 can alternately perform material picking, transfer, and unloading actions. When one component picks up material at the clamping component 1, the other component can simultaneously transfer the clamped workpiece 01 to the assembly station. There is no need to wait for a single action to complete before cyclical operation can be carried out, which greatly shortens the interval time of workpiece 01 transfer.

[0042] Reference Figure 1 , Figure 3 , Figure 5 , Figure 6 , Figure 7The clamping assembly 1 includes: a receiving plate 3, a clamping rod 4, a first push plate 5, a second push plate 6, and an intermediate component 7. The receiving plate 3 is connected to the conveying device. A clamping groove 31 is provided on the receiving plate 3 for placing the workpiece 01. The clamping rod 4 is slidably assembled on the receiving plate 3. The first push plate 5 and the second push plate 6 are both slidably assembled on the receiving plate 3. The intermediate component 7 is also provided on the receiving plate 3 and cooperates with the first push plate 5 and the clamping rod 4 respectively. A rotating rod 8 is provided between the first push plate 5 and the second push plate 6. The two ends of the rotating rod 8 are rotatably connected to the first push plate 5 and the second push plate 6 respectively. By providing the rotating rod 8, the first push plate 5 and the second push plate 6 can move synchronously and in opposite directions. The second push plate 6 is located between the clamping groove 31 and the first push plate 5.

[0043] Reference Figure 5 , Figure 7 When the lever 4 slides, its end can slide into the clamping groove 31, and the end of the lever 4 abuts against the side of the workpiece 01 to clamp and fix the workpiece 01.

[0044] When the transfer clamp 23 approaches the receiving plate 3, it is in an open or closed state. When the transfer clamp 23 is in the open state, it will abut against the push plate 5 when it approaches the receiving plate 3. When the transfer clamp 23 is in the closed state, it will abut against the push plate 6 when it approaches the receiving plate 3. Initially, the workpiece 01 is in the clamping assembly 1, and the clamping rod 4 abuts against the side of the workpiece 01. At this time, the transfer clamp 23 in the open state abuts against the push plate 5 and drives the push plate 5 to move. The movement of the push plate 5 drives the clamping rod 4 to separate from the workpiece 01 through the intermediate piece 7, so as to release the clamping assembly 1 from the workpiece 01. Then the transfer clamp 23 closes to clamp the workpiece 01. When the workpiece 01 is placed in the clamping assembly 1 after assembly, the transfer clamp 23 in the closed state approaches the receiving plate 3 and abuts against the push plate 2 6. The movement of the push plate 2 6 drives the push plate 1 5 to move in the opposite direction through the rotating rod 8. The reverse movement of the push plate 1 5 drives the clamping rod 4 to move in the opposite direction through the intermediate part 7, so that the clamping rod 4 abuts against the side of the workpiece 01 again, so that the clamping assembly 1 clamps the workpiece 01 again.

[0045] Reference Figure 3 , Figure 6 The rotating rod 8 is equipped with a rod-shaped structure with telescopic function. Push plate 5 and push plate 6 are arranged in parallel, and their sliding directions are also parallel. When the rotating rod 8 drives push plate 5 and push plate 6 to move synchronously, the rotating rod 8 will extend and retract accordingly, so as to avoid the rotating rod 8 interfering with the movement of push plate 5 and push plate 6.

[0046] Reference Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10A groove 32 is provided on the receiving plate 3, and the groove 32 is arranged along the sliding direction of the push plate 5. The intermediate component 7 includes: a push rod 71, a top ball 72, an intermediate rod 73, and an elastic element 74. The push rod 71 is arranged along the length direction of the groove 32 and is slidably assembled in the groove 32. The top ball 72 is slidably assembled at the bottom of the push rod 71. A spring that cooperates with the top ball 72 is provided in the push rod 71. The spring is used to drive the top ball 72 to move outward. The push plate 5 is connected to the push rod 71. A top groove 321 adapted to the top ball 72 is opened on the inner wall of the groove 32. The push rod 71 is arranged perpendicular to the clamping rod 4. A guide slope 41 is opened on the side of the clamping rod 4. The end of the push rod 71 slides against the guide slope 41. A central groove 42 is provided inside the clamping rod 4. A central rod 73 is located on the side of the clamping rod 4 away from the clamping groove 31. The central rod 73 is slidably engaged with the clamping rod 4, and the end of the central rod 73 extends into the central groove 42. An elastic element 74 is provided with a spring. The elastic element 74 is sleeved on the outside of the central rod 73. One end of the elastic element 74 is connected to the central rod 73, and the other end is connected to the clamping rod 4. The elastic element 74 is used to drive the clamping rod 4 to move in the direction away from the clamping groove 31.

[0047] When workpiece 01 needs to be clamped, the top ball 72 abuts against the inner wall of the slide groove 32, the transfer clamp 23 abuts against the push plate 6 and drives the push plate 6 to move. The movement of the push plate 6 drives the push plate 5 to move through the rotating rod 8. The movement of the push plate 5 drives the top rod 71 to move. The movement of the top rod 71 cooperates with different positions on the guide inclined surface 41 to drive the clamping rod 4 to move, so that the clamping rod 4 is close to workpiece 01. When the clamping rod 4 abuts against workpiece 01, the top ball 72 moves into the top groove 321 and engages with the top groove 321, thereby fixing the top rod 71 and the clamping rod 4.

[0048] When it is necessary to remove workpiece 01, the transfer clamp 23 abuts against the push plate 26, and the push plate 26 drives the push rod 71 to move, so that the top ball 1 72 separates from the top groove 321, releasing the restriction on the clamping rod 4. Then the elastic element 74 drives the clamping rod 4 to move and reset, releasing the clamping of workpiece 01.

[0049] When the clamping rod 4 comes into contact with the workpiece 01, the tension of the elastic element 74 on the clamping rod 4 is insufficient to cause the top ball 72 to separate from the top groove 321, so as to ensure the stability of the clamping rod 4 when holding the workpiece 01.

[0050] Reference Figure 4 A support groove 36 is provided on the inner wall of the clamping groove 31, and a retaining ring 02 is provided on the side of the workpiece 01. After the workpiece 01 is placed in the clamping groove 31, the retaining ring 02 enters the support groove 36. The retaining ring 02 and the support groove 36 cooperate to support the workpiece 01 and prevent the workpiece 01 from falling after entering the clamping groove 31. At the same time, when the clamping rod 4 is separated from the workpiece 01 and the transfer clamping plate 23 is not clamping the workpiece 01, the workpiece 01 is prevented from falling.

[0051] Reference Figure 5 The clamping groove 31 includes a mating part 311 and a vertical part 312. The mating part 311 is semi-circular and matches the side of the workpiece 01. The clamping rod 4 is disposed on the side of the vertical part 312. When placing the workpiece 01, the workpiece 01 is placed in the mating part 311 through the vertical part 312, and the side of the workpiece 01 abuts against the inner wall of the mating part 311. The clamping rod 4 abuts against the part of the workpiece 01 that is not in contact with the mating part 311 to clamp and fix the workpiece 01.

[0052] Reference Figure 2 , Figure 5 , Figure 6 , Figure 11 Push plate 5 and top rod 71 are rotatably engaged. The rotation axis of push plate 5 is set in the vertical direction. An auxiliary rod 51 is set on the end of push plate 5 away from its rotation axis. The auxiliary rod 51 is parallel to the rotation axis of push plate 5. The end of the auxiliary rod 51 away from push plate 5 extends into slide groove 32 and slides with slide groove 32. A relief groove 34 is opened on the receiving plate 3. The relief groove 34 is connected to slide groove 32 and is set on the side of slide groove 32 away from push plate 6.

[0053] After the workpiece 01 is placed in the clamping groove 31, the transfer clamp 23 abuts against the push plate 6, causing the push plate 5 to move. The push plate 5 causes the auxiliary rod 51 to move to the relief groove 34. When the transfer clamp 23 rotates and opens to separate from the workpiece 01, the rotation of the transfer clamp 23 will abut against the side of the push plate 5 and cause the push plate 5 to rotate. The rotation of the push plate 5 causes the auxiliary rod 51 to rotate into the relief groove 34, thus avoiding the phenomenon of the push plate 5 interfering with the rotation and opening of the transfer clamp 23.

[0054] A torsion spring is provided at the connection between the push plate 5 and the rotating rod 8. The torsion spring is used to drive the auxiliary rod 51 to rotate into the slide groove 32. A top bead 341 is provided in the relief groove 34. A spring is provided in the receiving plate 3 to drive the top bead 341 to move outward.

[0055] By setting a torsion spring in conjunction with push plate 5, the auxiliary rod is positioned within slide groove 32. Simultaneously, top ball 341 blocks the position of the auxiliary rod 51. When the transfer clamp 23 abuts against push plate 5, causing push plate 5 to move, this reduces the likelihood of the auxiliary rod 51 entering the clearance groove 34, thus preventing push plate 5 from rotating and ensuring stable movement of the top rod 71. When the transfer clamp 23 opens, push plate 5 causes the auxiliary rod 51 to rotate, overcoming the resistance of the torsion spring and top ball 341, allowing the auxiliary rod 51 to enter the clearance groove 34 for clearance.

[0056] Reference Figure 2 , Figure 5 , Figure 6 , Figure 11 A guide surface 511 is provided on the side of the auxiliary rod 51 facing away from the relief groove 34. After the transfer clamp 23 moves the auxiliary rod 51 into the relief groove 34 and separates it from the push plate 5, the torsion spring drives the auxiliary rod 51 to rotate through the relief groove 34 into the slide groove 32. The guide surface 511 abuts against the top ball 341, pressing the top ball 341 into the receiving plate 3, so that the auxiliary rod 51 can pass over the top ball 341 and return to the slide groove 32.

[0057] Push plate 2 6 and rotating rod 8 are rotatably engaged. The axis of rotation of push plate 2 6 is parallel to the axis of rotation of push plate 1 5. An auxiliary rod 2 61 is provided on push plate 2 6. The auxiliary rod 2 61 is arranged in the vertical direction. A slide groove 2 33 parallel to slide groove 1 32 is opened on the receiving plate 3. The auxiliary rod 2 61 is slidably assembled in slide groove 2 33. A clearance groove 2 35 communicating with slide groove 2 33 is opened on the receiving plate 3. The clearance groove 2 35 is located on the side of slide groove 2 33 away from slide groove 1 32. A torsion spring is provided at the connection between auxiliary rod 2 61 and rotating rod 8. The torsion spring is used to drive auxiliary rod 2 61 to rotate into slide groove 2 33.

[0058] When the transfer clamp 23 is open, it cooperates with the push plate 5, causing the push plate 5 to move. The movement of the push plate 5 causes the push plate 6 to move in the opposite direction. After the push plate 5 stops moving, the auxiliary rod 61 moves to the relief groove 35. When the transfer clamp 23 closes, it abuts against the side of the push plate 6, causing the auxiliary rod 61 to rotate into the relief groove 35. After the transfer clamp 23 separates from the push plate 6, the torsion spring causes the auxiliary rod 61 to rotate into the slide groove 33. This prevents the push plate 6 from interfering with the rotation of the transfer clamp 23.

[0059] Reference Figure 2 , Figure 5 , Figure 6 , Figure 11 A top bead 351 is provided on the side wall of the relief groove 2 35. A spring is provided in the receiving plate 3 to drive the top bead 351 to move outward. A guide surface 2 611 is provided on the side of the auxiliary rod 2 61 away from the relief groove 2 35. When the torsion spring drives the auxiliary rod 2 61 to rotate into the slide groove 2 33, the guide surface 2 611 abuts against the top bead 351 so that the auxiliary rod 2 61 passes over the top bead 351.

[0060] By setting top ball 241 and top ball 351, when the transfer clamp 23 moves close to the receiving plate 3 in the open or closed state, it will abut against push plate 1 5 or push plate 2 6. At this time, the position of auxiliary rod 1 51 or auxiliary rod 2 61 is restricted by top ball 241 or top ball 351, preventing push plate 1 5 and push plate 2 6 from rotating during this process, so that they slide in a predetermined direction to adjust the position of clamping rod 4. When the transfer clamp 23 in the open or closed state moves to the designated position and needs to rotate to clamp or release workpiece 01, it will rotate to abut against the side of push plate 1 5 or push plate 2 6. At this time, it will drive push plate 1 5 or push plate 2 6 to rotate, so that auxiliary rod 1 51 or auxiliary rod 2 61 will forcibly pass over top ball 241 or top ball 351, preventing push plate 1 5 or push plate 2 6 from interfering with the rotation of transfer clamp 23.

[0061] The implementation principle of this invention is as follows: When picking up materials, the top bead 72 engages with the top groove 321, and the top rod 71 fixes the clamping rod 4. At this time, the clamping rod 4 abuts against the side of the workpiece 01. The conveying device drives the receiving plate 3 to move to the transfer clamping plate 23, and the transfer seat 22 moves closer to the receiving plate 3. At this time, the transfer clamping plate 23 is in its initial open state. As the transfer seat 22 moves, the transfer clamping plate 23 abuts against the push plate 5 and pushes the push plate 5 to move. The push plate 5 moves through the top rod 71. The movement of the top rod 71 causes the top bead 72 to separate from the top groove 321. Then, the elastic element 74 causes the clamping rod 4 to separate from the workpiece 01, releasing the restriction on the workpiece 01. Then, the transfer clamping plate 23 closes and clamps the workpiece 01. The transfer seat 22 moves in the opposite direction to reset and causes the workpiece 01 to separate from the receiving plate 3. Then, the transfer seat 22 drives the workpiece 01 to rotate to the assembly process for assembly.

[0062] During the unloading process, the workpiece 01 is assembled. The transfer seat 22 drives the workpiece 01 to rotate to correspond with the receiving plate 3, and then moves closer to the receiving plate 3. During this process, the transfer clamp 23 clamps the workpiece 01. The transfer clamp 23 drives the workpiece 01 to move into the clamping groove 31 and abuts against the push plate 2 6. The push plate 2 6 drives the push plate 1 5 and the push rod 71 to move in the opposite direction through the rotating rod 8. The push rod 71 moves in the opposite direction and the clamping rod 4 abuts against the workpiece 01, clamping and fixing the workpiece 01 again.

[0063] During the process of moving the transfer seat 22, it cooperates with push plate 5 or push plate 6 to adjust the position of the clamping rod 4. During the process, neither the workpiece 01 nor the clamping rod 4 is worn. At the same time, it is easy to fix the workpiece 01 in the designated position, and it can reduce the position deviation during the processing to facilitate subsequent processing and improve the processing accuracy.

[0064] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A tool clamping and positioning device, comprising a clamping assembly for clamping a workpiece and a transfer assembly for transferring the workpiece, characterized in that, The transfer assembly includes: a transfer base and a pair of transfer clamps rotatably mounted on the transfer base. The clamping assembly includes: a receiving plate with a clamping groove, a lever slidably mounted on the receiving plate, a push plate 1 and a push plate 2 slidably mounted on the receiving plate, and an intermediate component that cooperates with the push plate 1 and the lever. A rotating rod is rotatably provided between the push plate 1 and the push plate 2 to drive them to move in opposite directions. The push plate 2 is located between the clamping groove and the push plate 1. When the transfer clamps move close to the receiving plate, they are in an open or closed state: when open, the transfer clamps first abut against the push plate 1 and push it to move, and the lever is driven to separate from the workpiece through the intermediate component. Then, they close to remove the workpiece from the clamping groove. When closed, the transfer clamps first abut against the push plate 2 and push it to move, and the push plate 1 is driven to move in the opposite direction through the rotating rod. Then, the lever is driven to abut against the workpiece through the intermediate component to achieve clamping. Then, they open to put the workpiece into the clamping groove. The receiving plate is provided with a slide groove. The intermediate components include: a push rod slidably assembled in the slide groove, and a top ball movably assembled on the push rod. A spring is provided in the push rod to drive the top ball to move outward. A top groove is provided on the inner wall of the slide groove. A guide slope is provided on the side of the clamping rod. The end of the push rod slides against the guide slope. Push plate 1 is connected to the push rod. When push plate 2 drives push plate 1 to move, it drives the push rod to move closer to the clamping rod. The end of the push rod cooperates with the guide slope to drive the clamping rod to move and abut against the side of the workpiece. Then, the top ball 1 moves to the top groove to fix the push rod and the clamping rod.

2. The tool clamping and positioning device according to claim 1, characterized in that, The intermediate components also include: an intermediate rod and an elastic element. The clamping rod has an intermediate groove. The intermediate rod is located on the side of the clamping rod away from the clamping groove. The intermediate rod slides with the clamping rod and extends into the intermediate groove. The elastic element is located in the intermediate groove and is connected to the intermediate rod and the inner wall of the intermediate groove respectively. The elastic element is used to drive the clamping rod to move in the direction away from the workpiece.

3. The tool clamping and positioning device according to claim 1, characterized in that, The clamping groove includes a mating part and a vertical part. The mating part is semi-circular and matches the outer side of the workpiece. When placing the workpiece, the workpiece abuts against the side wall of the mating part through the vertical part. The clamping rod is set in the vertical part.

4. The tool clamping and positioning device according to claim 1, characterized in that, Push plate 1 is rotatably engaged with push rod 1. Push plate 1 is provided with auxiliary rod 1, which is set in the vertical direction. The end of auxiliary rod 1 that is away from push plate 1 extends into slide groove 1 and slides in cooperation with slide groove 1. The receiving plate is provided with relief groove 1 that communicates with slide groove 1. Relief groove 1 is located on the side of slide groove 1 that is away from push plate 2. After the workpiece is placed in the clamping groove, when the transfer clamping plate opens, it abuts against push plate 1 and drives auxiliary rod 1 to rotate into relief groove 1.

5. The tool clamping and positioning device according to claim 4, characterized in that, A torsion spring is provided at the connection between the push plate and the rotating rod. The torsion spring is used to drive the auxiliary rod to rotate into the slide groove. A top bead is provided on the side wall of the sliding groove. A spring is provided in the receiving plate to drive the top bead to move outward.

6. The tool clamping and positioning device according to claim 5, characterized in that, A guide surface is provided on the side of the auxiliary rod that is away from the relief groove. When the torsion spring drives the auxiliary rod to rotate through the relief groove and into the slide groove, the guide surface abuts against the top bead to make the auxiliary rod pass over the top bead.

7. The tool clamping and positioning device according to claim 1, characterized in that, Push plate 2 is rotatably engaged with rotating rod. Auxiliary rod 2 is provided on push plate 2, which is set vertically. A second groove parallel to the first groove is opened on the receiving plate. Auxiliary rod 2 is slidably assembled in the second groove. A relief groove 2 communicating with the second groove is opened on the receiving plate. The relief groove 2 is located on the side of the second groove away from the first groove. A torsion spring is provided at the connection between auxiliary rod 2 and rotating rod. When the transfer clamp closes, it abuts against push plate 2 to drive auxiliary rod 2 to rotate into relief groove 2. After the transfer clamp separates from push plate 2, the torsion spring drives auxiliary rod 2 to rotate into the second groove.

8. The tool clamping and positioning device according to claim 7, characterized in that, A top bead three is provided on the side wall of the relief groove two. A spring is provided in the receiving plate to drive the top bead three to move outward. A guide surface two is provided on the side of the auxiliary rod two away from the relief groove two. When the torsion spring drives the auxiliary rod two to rotate into the slide groove two, the guide surface two abuts against the top bead three so that the auxiliary rod two passes over the top bead three.

9. The tool clamping and positioning device according to claim 1, characterized in that, A support groove is provided on the inner wall of the clamping groove, and a retaining ring is provided on the side of the workpiece. After the workpiece is placed in the clamping groove, the retaining ring enters the support groove and cooperates with the support groove to support the workpiece.

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