Positioning and clamping device

Abstract

The application relates to a positioning and pressing device, which comprises a shell provided with a positioning cavity, a driving assembly comprising a piston rod, a pressing assembly comprising a transmission member and a pressing arm, one end of the transmission member being connected with the piston rod, the other end being connected with the pressing arm, and a positioning assembly comprising a positioning pin and a sliding member, the sliding member being connected with the positioning pin, at least part of the sliding member being located in a movement path of the transmission member, the sliding member being capable of moving in the positioning cavity to drive the positioning pin to reach or leave a predetermined position; during movement of the piston rod in a first direction, the piston rod drives the transmission member to move, the transmission member drives the pressing arm to move, so that the pressing arm leaves a pressing state, and the transmission member can drive the positioning pin to move through the sliding member, so that the positioning pin leaves the predetermined position. The positioning and pressing device provided by the application adopts a set of driving assembly to drive the pressing assembly and the positioning assembly, thereby saving equipment occupied space to adapt to narrow tooling.

Description

Technical Field

[0001] This application relates to the field of welding tooling technology, and in particular to a positioning and clamping device. Background Technology

[0002] With the development of the times and the progress of technology, the tooling field is showing a trend of small-batch diversified production. Positioning devices and clamping devices are needed in the process of processing and manufacturing workpieces.

[0003] A typical clamping device (such as a clamping cylinder) includes a drive assembly, a transmission assembly, and a clamping arm. The power assembly (such as a high-power cylinder) generates the driving force. The transmission assembly typically employs a multi-link structure (such as a four-stage linkage) to transmit the driving force to the clamping arm, causing the clamping arm to clamp the workpiece.

[0004] The positioning device may include positioning elements, which are generally used to position the workpiece during the clamping operation to prevent the workpiece from deviating during the clamping process.

[0005] In practical applications, the positioning and clamping devices are driven by different drive components, resulting in high costs. The overall equipment occupies a large space and cannot be adapted to narrow workstations (such as automotive chassis welding fixtures). The positioning and clamping devices often need to work in coordination (e.g., performing clamping and positioning actions simultaneously), which requires the configuration of dual solenoid valves in practical applications, leading to complex wiring.

[0006] In view of this, there is an urgent need for a device that integrates positioning and clamping functions. Utility Model Content

[0007] This application addresses the shortcomings of the prior art by providing a positioning and clamping device, comprising: a housing having a positioning cavity; a driving assembly including a piston rod; a clamping assembly including a transmission member and a pressure arm, one end of the transmission member being connected to the piston rod and the other end of the transmission member being connected to the pressure arm; and a positioning assembly including a positioning pin and a sliding member, the sliding member being connected to the positioning pin, at least a portion of the sliding member being located within the movement path of the transmission member, the sliding member being capable of moving within the positioning cavity to drive the positioning pin to or from a predetermined position; wherein, during the movement of the piston rod along a first direction, the piston rod drives the transmission member to move, the transmission member drives the pressure arm to move, causing the pressure arm to disengage from the clamping state, and the transmission member being capable of driving the positioning pin to move via the sliding member, causing the positioning pin to disengage from the predetermined position.

[0008] Furthermore, the positioning component further includes: an elastic element disposed within the positioning cavity and connected to the sliding element and / or the positioning pin, for providing a force toward the predetermined position to the sliding element and the positioning pin.

[0009] Furthermore, during the movement of the piston rod in the second direction, the transmission member can be separated from at least a portion of the sliding member, and the positioning pin moves toward the predetermined position under the drive of the elastic member; wherein, the second direction is opposite to the first direction.

[0010] Furthermore, the transmission component includes a connecting rod and a first gear. The two ends of the connecting rod are respectively connected to the piston rod and the first gear. The first gear includes a contact portion, and the sliding component includes a connecting protrusion. During the movement of the piston rod in the first direction, the contact portion can abut against the connecting protrusion to drive the sliding component to move within the positioning cavity.

[0011] Furthermore, the housing is also provided with a transmission cavity, which communicates with the positioning cavity, and the first gear and the connecting rod are disposed in the transmission cavity; the connecting protrusion extends into the transmission cavity so as to abut against the contact portion.

[0012] Furthermore, the first gear is fan-shaped, and the contact portion includes the edge sidewall of the first gear, which extends radially along the first gear.

[0013] Furthermore, the transmission component also includes a second gear, which meshes with the first gear and is connected to the pressure arm; wherein the transmission ratio between the first gear and the second gear is less than 1.

[0014] Furthermore, the first end of the pressure arm is provided with a pressing part, and the second end of the pressure arm is provided with a locking member, which can lock or release the central shaft of the second gear; wherein, when the locking member locks the central shaft, the pressure arm can rotate with the second gear; when the locking member releases the central shaft, the pressure arm can rotate relative to the central shaft to adjust the pressing angle of the pressing part.

[0015] Furthermore, the piston rod is movable between a first position and a second position, and when the piston rod is in the first position, the connecting rod is arranged perpendicular to the piston rod; wherein, the first direction is the direction from the first position toward the second position.

[0016] Furthermore, when the pressure arm is in the clamping state, the pressure arm extends toward the positioning pin, and a placement space is provided between the pressure arm and the positioning pin, the placement space being used to place the part to be clamped.

[0017] The embodiments described in this application have the following beneficial effects: The positioning and clamping device provided in this application uses a single drive assembly to drive the clamping assembly and the positioning assembly, saving space and adapting to confined tooling. Through the linkage of the transmission component and the sliding component, the positioning and clamping device of this application can simultaneously perform the actions of releasing the workpiece and retracting the pin. The two actions are highly coordinated, which is beneficial for the rapid disassembly of the workpiece. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. The accompanying drawings in the following description are merely exemplary embodiments of this disclosure.

[0019] Figure 1A This is a schematic diagram of the positioning and clamping device in one example of this application (with the housing shown).

[0020] Figure 1B This is a schematic diagram of the positioning and clamping device in one example of this application (with part of the housing removed).

[0021] Figure 2 This is a schematic diagram of the internal structure of the shell in one example of this application.

[0022] Figure 3 This is a schematic diagram of the shell structure in one example of this application. Figure 4 This is a structural schematic diagram of the locking element and related components in one example of this application.

[0023] Figure Labels 10. Positioning and clamping device; 11. Drive assembly; 111. Piston rod; 12. Clamping assembly; 120. Transmission component; 121. Connecting rod; 122. First gear; 1221. Contact part; 123. Second gear; 1231. Central shaft; 130. Pressure arm; 131. Pressing part; 132. Locking component; 14. Housing; 141. Positioning cavity; 142. Transmission cavity; 15. Positioning assembly; 151. Positioning pin; 152. Sliding component; 153. Elastic component; 16. Placement space. Detailed Implementation

[0024] In the following description, exemplary embodiments of the present application will be described in more detail with reference to the accompanying drawings. As will be appreciated by those skilled in the art, the described embodiments can be modified in various ways without departing from the concept or scope of the present application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive. These embodiments are provided so that this application will be thorough and complete, and will fully convey the scope of the present application to those skilled in the art. Furthermore, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily obscuring the concepts of the present application.

[0025] The accompanying drawings illustrate various structural schematics according to embodiments of this application. These drawings are not to scale, and some details have been enlarged for clarity, while others may be omitted. The shapes of the various structures and devices shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design alternatives according to actual needs. The following related technologies are optional solutions and can be arbitrarily combined with the technical solutions of the embodiments of this application, all of which fall within the protection scope of the embodiments of this application.

[0026] This application provides a positioning and clamping device for positioning and clamping a workpiece. The workpiece refers to, for example, a workpiece in a machining process. The workpiece can be a single part or an assembly of several parts fixed together. The machining methods for the workpiece are diverse, including turning, milling, planing, grinding, casting, forging, etc.

[0027] The clamping operation may be to clamp the workpiece to change its shape or to press multiple parts of the workpiece together, or the clamping operation may be to fix the workpiece so that other devices can perform other processing steps on the workpiece.

[0028] The positioning can be to place the workpiece in a predetermined position with a predetermined posture. For example, for workpieces with structures such as holes or grooves, the posture and / or position of the workpiece can be adjusted by using a positioning pin that extends into the hole or groove. The positioning can occur, for example, during or before a clamping operation, so that the clamping operation produces the desired effect (e.g., clamping the workpiece surface to a predetermined position to fix the workpiece).

[0029] It is worth noting that if the workpiece is in a positioned state after the clamping action is completed and it is disassembled from the predetermined position, disassembly may be difficult (for example, during the disassembly process, the workpiece needs to move a preset distance along the locating pin axis before it can be moved away from the clamping position). After the clamping action is completed, an action to release the workpiece from its positioning state (i.e., a pin retraction action) can be performed to allow the locating pin to exit from the hole or groove, facilitating the workpiece's removal from the clamping position.

[0030] The following is combined with Figure 1A and Figure 1B The positioning and clamping device of this application is described in detail. Figure 1A This is a structural schematic diagram of the positioning and clamping device of this application (with the housing shown). Figure 1B This is a structural schematic diagram of the positioning and clamping device of this application (with part of the housing removed).

[0031] like Figure 1A and Figure 1B As shown, this application provides a positioning and clamping device, including: a housing 14 with a positioning cavity 141; a drive assembly 11 including a piston rod 111; a clamping assembly 12 including a transmission member 120 and a clamping arm 130, one end of the transmission member 120 being connected to the piston rod 111 and the other end of the transmission member 120 being connected to the clamping arm 130; and a positioning assembly 15 including a positioning pin 151 and a sliding member 152, the sliding member 152 being connected to the positioning pin 151, at least a portion of the sliding member 152 being connected to the positioning pin 151. Located along the movement path of the transmission member, the sliding member 152 can move within the positioning cavity 141 to drive the positioning pin 151 to reach or disengage from a predetermined position; wherein, during the movement of the piston rod 111 along the first direction, the piston rod 111 drives the transmission member 120 to move, the transmission member 120 drives the pressure arm 130 to move, so that the pressure arm 130 disengages from the pressing state, and the transmission member 120 can drive the positioning pin 151 to move via the sliding member 152, so that the positioning pin 151 disengages from the predetermined position.

[0032] The housing 14 may cover all or all of the drive assembly 11, clamping assembly 12, and / or positioning assembly 15 to provide protection. For example, the housing 14 may be used to cover the piston rod 111, the transmission component 120, and the positioning assembly 15. The housing 14 may be made of a rigid material, such as aluminum alloy.

[0033] It is understood that the positioning cavity 141 can be a cavity located within the housing 14. The positioning cavity 141 can be used to accommodate the positioning component 15 to achieve the function of protecting the positioning component 15.

[0034] It should be understood that the above description of the housing 14 is merely exemplary and does not constitute a limitation on the housing 14. Those skilled in the art can select and set the material and structure of the housing according to actual needs, as long as the principle of this application can be achieved.

[0035] It is understood that the drive assembly 11 may be, for example, a cylinder. The drive assembly 11 may include, for example, a piston rod 111, a partition, and a chamber, wherein pressure changes within the chamber can cause changes in the volume of the chamber, thereby moving the partition and causing the piston rod 111 to reciprocate.

[0036] It should be understood that the above description of the driving component 11 is merely exemplary and does not constitute a limitation on the driving component 11. Those skilled in the art can select the driving component 11 according to actual needs, as long as it can achieve the principle of this application.

[0037] It is understandable that a portion of the piston rod 111 extends out of the cylinder, and the length of the portion of the piston rod 111 extending out of the cylinder changes during the reciprocating motion of the piston rod 111.

[0038] It is understood that one end of the transmission component 120 is connected to the piston rod 111, and the other end is connected to the pressure arm 130. The transmission component 120 is used to transmit the movement of the piston rod 111 to the pressure arm 130, so that the pressure arm 130 can perform a clamping action on the workpiece. For example, the pressure arm 130 can rotate under the drive of the transmission component 120, and generate downward pressure on the workpiece by rotation.

[0039] It should be understood that the above description of the transmission component 120 is merely exemplary and does not constitute a limitation on the transmission component 120. Those skilled in the art can select and configure the transmission component 120 according to actual needs, as long as the principle of this application can be achieved.

[0040] It is understood that the positioning component 15 may include a positioning pin 151 and a slider 152.

[0041] The locating pin 151 can be a rod-shaped or a cone-shaped body. At a predetermined position, the locating pin 151 extends out of the locating cavity 141 and can position the workpiece. For example, when the end of the locating pin 151 extends out of the locating cavity 141, this end can be inserted into a hole in the workpiece to maintain the workpiece in a preset posture.

[0042] The slider 152 can be movably connected (e.g., abutting) or fixedly connected (e.g., keyed or pinned) to the locating pin 151.

[0043] The slider 152 can slide within the positioning cavity 141 to drive the positioning pin 151 to a predetermined position. For example, the slider 152 can move upward along the positioning cavity 141 to push the positioning pin 151 to a predetermined position, and then the end of the positioning pin 151 passes through the housing 14 so that it can be inserted into the hole of the workpiece to position the workpiece.

[0044] The slider 152 can slide within the positioning cavity 141 to disengage the positioning pin 151 from a predetermined position. For example, the slider 152 slides downward along the positioning cavity 141 (towards...). Figure 1A When the slider 152 moves (with the lower part of the slider 152 as reference), it can drive the positioning pin 151 to move away from the predetermined position (when the positioning pin 151 and the slider 152 are fixedly connected), or the positioning pin 151 moves away from the predetermined position with the slider 152 under the action of gravity (when the positioning pin 151 and the slider 152 are movably connected), and then the end of the positioning pin 151 retracts into the positioning cavity 141 of the housing 14 to release the positioning of the workpiece (i.e., retract the pin).

[0045] Part of the sliding member 152 is located in the movement path of the transmission member 120. During the movement of the transmission member 120, the transmission member 120 drives the sliding member 152 to move, and the sliding member 152 in turn drives the positioning pin 151 to move.

[0046] For example, the first direction may be the direction in which the piston rod 111 retracts into the cylinder. As the piston rod 111 moves along the first direction, the portion of the piston rod 111 extending out of the cylinder decreases. When the portion of the piston rod 111 extending out of the cylinder decreases, the transmission member 120 drives the pressure arm 130 to rotate (for example, the pressure arm 130 may rotate clockwise) to disengage the pressure arm 130 from the clamping state.

[0047] During the process of the transmission component 120 driving the pressure arm 130 to rotate (for example, the pressure arm 130 can rotate clockwise), the transmission component 120 can also drive the sliding component 152 to move downward along the positioning cavity 141, so that the positioning pin 151 can move downward with the sliding component 152 to disengage the positioning pin 151 from the predetermined position.

[0048] It should be understood that the above description of the positioning component 15 is merely exemplary and does not constitute a limitation on the positioning component 15. Those skilled in the art can select and set the positioning component 15 according to actual needs, as long as the principle of this application can be achieved.

[0049] The positioning and clamping device 10 provided in this application uses the same drive component 11 to drive the clamping component 12 and the positioning component 15, saving equipment space to adapt to narrow tooling. Through the linkage between the transmission component 120 and the sliding component 152, the positioning and clamping device 10 of this application can simultaneously perform the two actions of releasing the workpiece and retracting the pin. The two actions have a high degree of coordination, which is conducive to the rapid disassembly of the workpiece.

[0050] The following is combined with Figure 2 The positioning component 15 is described in detail. Figure 2 This is a schematic diagram of the structure of the positioning component 15 in one example of this application.

[0051] The positioning component 15 further includes an elastic element 153, disposed within the positioning cavity 141 and connected to the sliding element 152 and / or the positioning pin 151, for providing a force toward the predetermined position to the sliding element 152 and the positioning pin 151.

[0052] The elastic element 153 may be, for example, a spring. One end of the elastic element 153 is connected to the inner wall of the positioning cavity 141, and the other end is connected to the sliding element 152 or the positioning pin 151. When the positioning pin 151 is disengaged from the predetermined position, the elastic element 153 is in a deformed state (e.g., the spring is in a compressed or stretched state). The force generated by the elastic element 153 restoring its deformation can act on the sliding element 152 and / or the positioning pin 151, so that the positioning pin 151 can move toward the predetermined position.

[0053] It should be understood that the above description of the elastic element 153 is merely exemplary and does not constitute a limitation on the elastic element 153. Those skilled in the art can select and configure the above elastic element 153 according to actual needs, as long as the principle of this application can be achieved.

[0054] During the movement of piston rod 111 in the second direction, transmission member 120 can be separated from at least part of sliding member 152, and positioning pin 151 moves toward the predetermined position under the drive of elastic member 153; wherein, the second direction is opposite to the first direction.

[0055] It is understood that the second direction is opposite to the first direction. For example, the first direction could be the direction in which the piston rod 111 retracts into the cylinder. Correspondingly, the second direction could be the direction in which the piston rod 111 extends out of the cylinder.

[0056] As the piston rod 111 moves in the second direction, the portion of the piston rod 111 extending out of the cylinder increases. With the piston rod 111 extending out of the cylinder more, the transmission member 120 drives the pressure arm 130 to rotate (for example, the pressure arm 130 can rotate counterclockwise) so that the pressure arm 130 performs a clamping action.

[0057] During the process of the transmission member 120 driving the pressure arm 130 to rotate (for example, the pressure arm 130 can rotate counterclockwise), the transmission member 120 can separate from at least part of the sliding member 152. It is worth noting that when the transmission member 120 is separated from at least part of the sliding member 152, the sliding member 152 and / or the positioning pin 151 can move upward along the positioning cavity 141 under the force of the elastic member 153, and then the positioning pin 151 can move upward with the sliding member 152 so that the positioning pin 151 reaches the predetermined position.

[0058] The process of piston rod 111 moving in the second direction can be driven by a cylinder. For example, when the pressure in the corresponding chamber of the cylinder increases, the pressure difference on both sides of the partition causes piston rod 111 to move in the second direction.

[0059] In the event of cylinder depressurization, piston rod 111 may also move in the second direction. For example, if a three-position central bleed solenoid valve is used to control the cylinder, the valve turning to the neutral position causes cylinder depressurization, and piston rod 111 can be moved between any two positions within its stroke by the transmission member 120. The elastic force generated by the elastic member 153 acts on the sliding member 152, causing the sliding member 152 to move upward along the positioning cavity 141. The upward movement of the sliding member 152 drives the transmission member 120 to move, which in turn drives piston rod 111 to move downward (i.e., piston rod 111 moves in the second direction).

[0060] The following is combined with Figure 2The transmission component 120 is described in detail. Figure 2 This is a schematic diagram of the transmission component 120 and related structures in this application.

[0061] like Figure 2 As shown, the transmission component 120 includes a connecting rod 121 and a first gear 122. The two ends of the connecting rod 121 are connected to the piston rod 111 and the first gear 122, respectively. The first gear 122 includes a contact portion 1221, and the sliding component 152 includes a connecting protrusion 1521. During the movement of the piston rod 111 in the first direction, the contact portion 1221 can abut against the connecting protrusion 1521 to drive the sliding component 152 to move in the positioning cavity 141.

[0062] Understandably, link 121 can be a straight rod, a curved rod, or other irregular rod.

[0063] For example, the first end of the connecting rod 121 may be rotatably connected to the piston rod 111 (e.g., hinged or riveted). The reciprocating motion of the piston rod 111 can drive the connecting rod 121 to move. The second end of the connecting rod 121 may be connected to the first gear 122. When the connecting rod 121 moves, the connecting rod 121 can drive the first gear 122 to rotate through the movement of the second end.

[0064] The contact portion 1221 and the connecting protrusion 1521 cooperate with each other. Exemplarily, during the movement of the piston rod 111 in the first direction (i.e., during the retraction of the piston rod 111 into the cylinder), the first gear 122 rotates counterclockwise, and the contact portion 1221 moves downwards along the circumference of the first gear 122. When the contact portion 1221 abuts against the connecting protrusion 1521, the downward movement of the contact portion 1221 can drive the connecting protrusion 1521 to move downwards, thereby driving the slider 152 to move downwards within the positioning cavity 141. The slider 152 then causes the positioning pin 151 to disengage from the predetermined position.

[0065] It should be understood that the above description of the transmission component 120 is merely exemplary and does not constitute a limitation on the transmission component 120. Those skilled in the art can select and configure the transmission component 120 according to actual needs, as long as the principle of this application can be achieved.

[0066] The housing 14 is also provided with a transmission cavity 142, which is connected to the positioning cavity 141. The first gear 122 and the connecting rod 121 are located in the transmission cavity 142. The connecting protrusion 1521 extends into the transmission cavity 142 so as to abut against the contact portion 1221.

[0067] The transmission cavity 142 can be, for example, a cavity within the housing 14. The first gear 122 and connecting rod 121 are disposed within the transmission cavity 142. One end of the piston rod 111 can extend into the transmission cavity 142 and drive the connecting rod 121 to move, thereby driving the first gear 122 to rotate. A connecting protrusion 1521 extends from the positioning cavity 141 into the transmission cavity 142 so that it can abut against the contact portion 1221 during the rotation of the first gear 122.

[0068] The following is combined with Figure 3 The first gear 122 is described in detail. Figure 3 This is a schematic diagram of the structure of the first gear 122 in this application.

[0069] The first gear 122 is fan-shaped, and the contact portion 1221 includes the edge sidewall of the first gear 122, which extends radially along the first gear 122.

[0070] It is understood that the shape of the first gear 122 can be a portion of a circle, such as a sector or other irregular shape. The central angle of the sector can be, for example, 120°.

[0071] The contact portion 1221 includes the edge sidewall of the first gear 122. For example, the contact portion 1221 may include a fan-shaped edge sidewall. The edge sidewall is generally straight. Exemplarily, when the first gear 122 rotates counterclockwise, the edge sidewall may abut against the connecting protrusion 1521 to drive the slider 152 to move downward.

[0072] Furthermore, in this application, the rotation angle range of the first gear 122 is limited, and the number of teeth that come into contact with the second gear 123 during rotation is also limited. The teeth of the first gear 122 do not need to completely cover the circumferential edge of the gear. In this case, the shape of the first gear 122 can also be part of a circle, which can reduce the cost of the gear and also reduce the size of the positioning and clamping device 10.

[0073] It should be understood that the above description of the first gear 122 is merely exemplary and does not constitute a limitation on the first gear 122. Those skilled in the art can select and configure the first gear 122 according to actual needs, as long as the principle of this application can be achieved.

[0074] The transmission component 120 also includes a second gear 123, which meshes with the first gear 122 and is connected to the pressure arm 130; wherein the transmission ratio between the first gear 122 and the second gear 123 is less than 1.

[0075] The first gear 122 meshes with the second gear 123, for example, the teeth of the first gear 122 mesh with the teeth of the second gear 123. That is, the rotation of the first gear 122 can drive the second gear 123 to rotate. For example, if the first gear 122 rotates clockwise, the second gear 123 will be driven to rotate counterclockwise.

[0076] The pressure arm 130 can be coaxially arranged with the second gear 123. When the second gear 123 rotates, the pressure arm 130 also rotates synchronously to provide pressure (e.g., downward pressure) applied to the workpiece. For example, if the second gear 123 rotates 90° counterclockwise, the pressure arm 130 will also rotate 90° counterclockwise accordingly.

[0077] The transmission ratio between the first gear 122 and the second gear 123 is less than 1. That is, when the first gear 122 rotates, driving the second gear 123 to rotate, the angular velocity of the first gear 122 is less than the angular velocity of the second gear 123. In this case, a smaller rotation angle of the first gear 122 can drive the second gear 123 to rotate a larger rotation angle, thereby increasing the opening and closing angle range of the pressure arm 130. For example, the transmission ratio between the first gear 122 and the second gear 123 is 1:3. If the first gear 122 can rotate 60°, then the second gear 123 can rotate 180°, thus enabling the opening and closing range of the pressure arm 130 to reach 180°.

[0078] The following is combined with Figure 4 A detailed description of the pressure arm 130 is provided. Figure 4 This is a structural schematic diagram of the locking component and related parts in this application.

[0079] like Figure 4 As shown, the first end of the pressure arm 130 is provided with a pressing part 131, and the second end of the pressure arm 130 is provided with a locking member 132. The locking member 132 can lock or release the central shaft 1231 of the second gear 123. When the locking member 132 locks the central shaft 1231, the pressure arm 130 can rotate with the second gear 123. When the locking member 132 releases the central shaft 1231, the pressure arm 130 can rotate relative to the central shaft 1231 to adjust the pressing angle of the pressing part 131.

[0080] It is understood that the pressing plane of the pressing part 131 may be a shape that matches the workpiece, such as a plane or other shape. The pressing part 131 is used to contact the workpiece surface and provide downward pressure when the pressure arm 130 is rotated to a preset position.

[0081] It is understood that the locking element 132 may include, for example, a first part and a second part (such as...). Figure 4As shown, the locking member 132 includes an upper part and a lower part. The first part and the second part can engage the central shaft 1231 of the second gear 123. The locking member 132 can be used to rigidly connect the pressure arm 130 to the second gear 123 when the positioning and pressing device 10 is performing a pressing operation.

[0082] Exemplarily, the locking member 132 can lock the central shaft 1231 of the second gear 123. The first portion and the second portion can be fastened, for example, by bolts to increase the normal pressure on the surface of the central shaft 1231, thereby providing friction between the central shaft 1231 and the first portion and / or the second portion. When the locking member 132 is in the locked state, rotation of the second gear 123 can drive the pressure arm 130 to rotate, providing downward pressure acting on the surface of the workpiece.

[0083] For example, the locking member 132 can also release the central shaft 1231 of the second gear 123. For instance, the first and second portions can relax the central shaft 1231 to reduce or eliminate the normal pressure on the surface of the central shaft 1231, thereby allowing the locking member 132 and the central shaft 1231 to rotate relative to each other to adjust the position of the pressure arm 130. In this way, the pressure arm 130 can rotate relative to the central shaft 1231, thereby adjusting the pressing angle of the pressing portion 131 (e.g., the angle at which the pressing portion 131 protrudes from the locking member 132) to adapt to workpieces of different shapes. The pressing angle of the pressing portion 131 can, for example, be adjusted to any value between 0° and 90°.

[0084] It should be understood that the above description of the pressure arm 130 is merely exemplary and does not constitute a limitation on the pressure arm 130. Those skilled in the art can select and configure the pressure arm 130 according to actual needs, as long as the principle of this application can be achieved.

[0085] The piston rod 111 is movable between a first position and a second position. When the piston rod 111 is in the first position, the connecting rod 121 is arranged perpendicular to the piston rod 111. The first direction is the direction from the first position toward the second position.

[0086] In the first position, the piston rod 111 is perpendicular to the connecting rod 121. With the piston rod 111 in this position, the axial movement of the connecting rod 121 generates a force perpendicular to the surface of the piston rod 111. That is, in the first position, the movement of the piston rod 111 can drive the connecting rod 121, but the movement of the connecting rod 121 cannot drive the piston rod 111. At this time, the output torque of the pressure arm 130 is independent of the driving force of the drive assembly 11. The maximum torque that the pressure arm 130 can output depends on the material strength of each component (especially the material strength of the transmission assembly and the piston rod).

[0087] In the second position, the piston rod 111 is not perpendicular to the connecting rod 121. It is worth noting that in the second position, the tendency of the connecting rod 121 to move along its own axial direction can generate a force along the axial direction of the piston rod 111. That is, in the second position, the movement of the connecting rod 121 can drive the piston rod 111 to move.

[0088] The first direction is the direction from the first position toward the second position. The piston rod 111 moves along the first direction, that is, it moves toward the second position. During this process, the pressure arm 130 releases or moves away from the workpiece, and the positioning assembly 15 performs a pin retraction action.

[0089] When the pressure arm 130 is in the clamping state, the pressure arm 130 extends toward the positioning pin 151, and a placement space 16 is provided between the pressure arm 130 and the positioning pin 151. The placement space 16 is used to place the part to be clamped.

[0090] For example, when the pressure arm 130 is in the clamping state, the piston rod 111 is in the first position. The pressure arm 130 extends toward the positioning pin 151 so that the downward pressure of the pressure arm 130 can act on the surface of the workpiece to be clamped. In this case, the placement space 16 between the pressure arm 130 and the positioning pin 151 is minimized. When the workpiece to be clamped (i.e., the workpiece) is placed in the placement space 16, the downward pressing portion 131 of the pressure arm 130 presses against the surface of the workpiece to be clamped, and the positioning pin 151 positions the workpiece to be clamped.

[0091] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0092] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0093] In this application, unless otherwise stated, directional terms such as "up" and "down" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" are generally used in relation to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this application.

[0094] The above description is merely an exemplary embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope described in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A positioning and clamping device, comprising: The housing (14) is provided with a positioning cavity (141). The drive assembly (11) includes a piston rod (111). The clamping assembly (12) includes a transmission member (120) and a pressure arm (130), one end of the transmission member (120) is connected to the piston rod (111), and the other end of the transmission member (120) is connected to the pressure arm (130); as well as The positioning component (15) includes a positioning pin (151) and a slider (152). The slider (152) is connected to the positioning pin (151). At least part of the slider (152) is located in the movement path of the transmission component (120). The slider (152) can move within the positioning cavity (141) to drive the positioning pin (151) to reach or leave a predetermined position. During the movement of the piston rod (111) in the first direction, the piston rod (111) drives the transmission member (120) to move, and the transmission member (120) drives the pressure arm (130) to move, so that the pressure arm (130) is released from the pressing state. In addition, the transmission member (120) can drive the positioning pin (151) to move through the sliding member (152), so that the positioning pin (151) is released from the predetermined position.

2. The positioning and clamping device according to claim 1, wherein, The positioning component (15) further includes: An elastic element (153) is disposed in the positioning cavity (141) and connected to the sliding element (152) and / or the positioning pin (151) for providing a force toward the predetermined position to the sliding element (152) and the positioning pin (151).

3. The positioning and clamping device according to claim 2, wherein, During the movement of the piston rod (111) in the second direction, the transmission member (120) can be separated from at least part of the sliding member (152), and the positioning pin (151) moves toward the predetermined position under the drive of the elastic member (153). The second direction is opposite to the first direction.

4. The positioning and clamping device according to claim 1, wherein, The transmission component (120) includes a connecting rod (121) and a first gear (122). The two ends of the connecting rod (121) are respectively connected to the piston rod (111) and the first gear (122). The first gear (122) includes a contact portion (1221). The sliding component (152) includes a connecting protrusion. During the movement of the piston rod (111) in the first direction, the contact part (1221) can abut against the connecting protrusion to drive the slider (152) to move in the positioning cavity (141).

5. The positioning and clamping device according to claim 4, wherein, The housing (14) is also provided with a transmission cavity (142), which is connected to the positioning cavity (141). The first gear (122) and the connecting rod (121) are located in the transmission cavity (142). The connecting protrusion extends into the transmission cavity (142) so as to abut against the contact portion (1221).

6. The positioning and clamping device according to claim 4, wherein, The first gear (122) is fan-shaped, and the contact portion (1221) includes the edge sidewall of the first gear (122), which extends radially along the first gear (122).

7. The positioning and clamping device according to claim 4, wherein, The transmission component (120) further includes a second gear (123), which meshes with the first gear (122) and is connected to the pressure arm (130); wherein the transmission ratio between the first gear (122) and the second gear (123) is less than 1.

8. The positioning and clamping device according to claim 7, wherein, The first end of the pressure arm (130) is provided with a pressing part (131), and the second end of the pressure arm (130) is provided with a locking member (132). The locking member (132) can lock or release the central shaft (1231) of the second gear (123). When the locking member (132) locks the central shaft (1231), the pressure arm (130) can rotate with the second gear (123); when the locking member (132) releases the central shaft (1231), the pressure arm (130) can rotate relative to the central shaft (1231) to adjust the pressing angle of the pressing part (131).

9. The positioning and clamping device according to claim 4, wherein, The piston rod (111) is movable between a first position and a second position. When the piston rod (111) is in the first position, the connecting rod (121) is arranged perpendicular to the piston rod (111). Wherein, the first direction is the direction from the first position toward the second position.

10. The positioning and clamping device according to any one of claims 1 to 9, wherein, When the pressure arm (130) is in the pressing state, the pressure arm (130) extends toward the positioning pin (151), and a placement space (16) is provided between the pressure arm (130) and the positioning pin (151), the placement space (16) being used to place the part to be pressed.

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