Positioning mechanism and machining device

Abstract

The utility model provides a locating mechanism and a processing device to reduce damage and processing cost, the locating mechanism is used for locating a workpiece, the workpiece is provided with an inner cavity with an opening, and the locating mechanism comprises a base; the rotary driving part is arranged on the base; the rotating seat is connected with the rotating driving part so as to rotate under the driving of the rotating driving part; the bearing seat is arranged on the rotating seat and used for bearing a workpiece, and an opening of an inner cavity of the workpiece deviates from the bearing seat; the clamping assembly comprises a first stop piece, a second stop piece, a first clamping piece and a second clamping piece which are sequentially arranged in the circumferential direction of the bearing seat, the first stop piece and the second stop piece are connected with the bearing seat, the first clamping piece is arranged on the rotating seat and used for pushing a workpiece to abut against the first stop piece, and the second clamping piece is arranged on the rotating seat and used for pushing the workpiece to abut against the second stop piece. The push rod is used for pushing the workpiece to abut against the second stop piece; and the multiple sets of pressing and holding assemblies are all arranged on the rotating base and arranged in the circumferential direction of the bearing base at intervals, and the multiple sets of pressing and holding assemblies are used for pressing and holding the workpiece located on the bearing base after the clamping assemblies clamp the workpiece.

Description

TECHNICAL FIELD

[0001] The utility model relates to positioning processing technical field, concretely relates to a positioning mechanism and processing device. BACKGROUND

[0002] At present, when processing workpiece with inner cavity, the workpiece is placed in the positioning groove first, then the workpiece is pressed in the vertical direction by the pressing mechanism, finally the mechanical arm drives the cutter to process the side wall and bottom wall of the inner cavity according to the predetermined track. However, because the side wall of the inner cavity is thin, the above processing method is easy to cause damage to the inner cavity side wall, in addition, the use cycle of the mechanical arm is long, which leads to high processing cost. SUMMARY

[0003] In view of the above, it is necessary to provide a positioning mechanism and processing device to reduce damage and processing cost.

[0004] The utility model embodiment provides a positioning mechanism for positioning workpiece, the workpiece has open inner cavity, the positioning mechanism includes:

[0005] Base;

[0006] Rotary drive part, be located in the base;

[0007] Rotary seat, connect the rotary drive part, rotate under the drive of the rotary drive part;

[0008] Bearing seat, be located in the rotary seat and be used to carry workpiece, the opening of the inner cavity of the workpiece is away from the bearing seat;

[0009] Clamping assembly, including first stopper, second stopper, first clamping piece and second clamping piece that are sequentially arranged along the circumference of the bearing seat, the first stopper and the second stopper are connected with the bearing seat respectively, the first clamping piece is located in the rotary seat and is used to push the workpiece to abut to the first stopper, the second clamping piece is located in the rotary seat and is used to push the workpiece to abut to the second stopper, and

[0010] Multiple sets of pressing assembly, are located in the rotary seat and are spaced apart along the circumference of the bearing seat, and multiple sets of the pressing assembly are used to press the workpiece on the bearing seat after the clamping assembly clamps the workpiece.

[0011] In some embodiments, the first stopper and the second stopper both include:

[0012] Fixed body, connect the bearing seat;

[0013] Stop body, with the fixed body insertion and cooperation, and the stop body is located on the side of the fixed body towards the bearing seat, and is used to abut to the workpiece.

[0014] In some embodiments, the first clamping member and the second clamping member each comprise:

[0015] a clamping driving body connected to the rotating seat and located at the side of the bearing seat;

[0016] a pushing body connected to the clamping driving body to push the workpiece under the driving of the clamping driving body.

[0017] In some embodiments, the first clamping member and the second clamping member each further comprise:

[0018] a pressure sensor electrically connected to the pushing body and the clamping driving body to make the pushing body push the workpiece with a preset pressure.

[0019] In some embodiments, the first stopper and the first clamping member are oppositely arranged in a first direction, and the second stopper and the second clamping member are oppositely arranged in a second direction perpendicular to the first direction.

[0020] In some embodiments, the pressing assembly is four groups, and one group of the pressing assembly is respectively arranged between the first stopper and the second stopper, between the second stopper and the first clamping member, between the first clamping member and the second clamping member, and between the second clamping member and the first stopper.

[0021] In some embodiments, each group of the pressing assembly comprises:

[0022] a pressing driving member arranged in the rotating seat;

[0023] a pressing member connected to the pressing driving member, the pressing driving member being used to drive the pressing member to rotate and lift to press the workpiece to the bearing seat; and

[0024] a limiting member arranged in the pressing driving member and used to be inserted into the lowered pressing member;

[0025] wherein the rotation axis of the pressing member is perpendicular to the rotation axis of the rotating seat.

[0026] In some embodiments, the pressing member comprises:

[0027] a linkage body connected to the pressing driving member;

[0028] a pressing body comprising a pressing part and a limiting part, the pressing part being detachably connected to the linkage body and used to press the workpiece located on the bearing seat, and the limiting part being perpendicularly connected to the pressing part and provided with an abutting surface, the abutting surface being arranged on one side of the limiting part and facing the pressing part and used to abut the side wall of the inner cavity when the pressing part presses the workpiece.

[0029] In some embodiments, the bearing seat comprises:

[0030] a mounting member connected with the first stopper and the second stopper respectively;

[0031] a plurality of supporting members arranged along the circumference of the mounting member, and two ends of each of the supporting members are connected with the rotating seat and the mounting member respectively;

[0032] a sealing member arranged on the side of the mounting member away from the rotating seat;

[0033] a suction member arranged on the side of the sealing member away from the mounting member and provided with a plurality of suction holes for suctioning the workpiece; and

[0034] an air nozzle connected with the side of the mounting member facing the rotating seat and communicated with the plurality of suction holes, the air nozzle being used for connecting a vacuum generator.

[0035] The utility model embodiment further provides a processing device, comprising:

[0036] the above-mentioned positioning mechanism;

[0037] a processing mechanism comprising a cutter, the cutter being used for extending into the inner cavity to process the side wall and the bottom wall of the inner cavity.

[0038] In the above-mentioned positioning mechanism and processing device, the first clamping member and the first stopper in the clamping assembly cooperate to preliminarily position the workpiece in the horizontal direction, the second clamping member and the second stopper cooperate to secondarily position the workpiece in the horizontal direction, and the workpiece is positioned in the vertical direction by the multiple sets of pressing assemblies in the multiple-point pressing mode, so that the positioning mechanism and the processing device form a hierarchical positioning on the workpiece, which can reduce the damage to the side wall of the inner cavity of the workpiece. In addition, the rotating drive member can drive the rotating seat to rotate the workpiece when the processing mechanism processes the workpiece, so as to shorten the use cycle of the processing mechanism and reduce the processing cost. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 A structure diagram of a workpiece suitable for the utility model embodiment.

[0040] Figure 2 A structure diagram of a positioning mechanism of the utility model embodiment.

[0041] Figure 3 A structure diagram of a positioning mechanism of the utility model embodiment. Figure 2 An exploded diagram of the bearing seat, the first stopper and the second stopper in the positioning mechanism shown in the figure.

[0042] Figure 4 A structure diagram of a positioning mechanism of the utility model embodiment. Figure 2Structure diagram of the positioning mechanism shown in the figure.

[0043] Main element symbol explanation: positioning mechanism 100, base 110, rotary driving part 120, rotary seat 130, bearing seat 140, mounting part 141, supporting part 142, sealing part 143, suction part 144, suction hole 144a, air nozzle 145, clamping assembly 150, first stop part 151, fixed body 1511, stop body 1512, second stop part 152, first clamping part 153, clamping driving body 1531, pushing body 1532, second clamping part 154, pressing assembly 160, pressing driving part 161, pressing part 162, linkage body 1621, pressing body 1622, pressing part 1622a, limiting part 1622b, fitting surface 1622c, limiting part 163, workpiece 200, inner cavity 200a, bottom wall 200b, side wall 200c, undercut part 200d. DETAILED DESCRIPTION

[0044] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application and cannot be understood as a limitation of the present application.

[0045] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements or the interaction relationship between two elements. In the description of the present application, it should be noted that, the meaning of "multiple" is two or more than two, unless otherwise explicitly specified and limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0046] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application and cannot be understood as a limitation of the present application.

[0047] Please see Figure 1 , Figure 1For the structure of the workpiece suitable for the embodiment of the utility model, specifically, the workpiece 200 has an open inner cavity 200a, the inner cavity 200a includes a bottom wall 200b and a side wall 200c, the side wall 200c is connected to the bottom wall 200b and is arranged along the circumference of the bottom wall 200b, and the bottom wall 200b and the side wall 200c are respectively provided with a reverse buckle part 200d to be machined. In the embodiment, the workpiece 200 is substantially in a cubic structure, the side wall 200c is connected at the end, and the reverse buckle parts 200d on the bottom wall 200b and the side wall 200c are both two.

[0048] Please see Figure 2 The embodiment of the utility model provides a positioning mechanism 100 for positioning workpiece 200, positioning mechanism 100 includes base 110, rotary drive 120, rotary seat 130, bearing seat 140, clamping assembly 150 and multiple sets of pressure holding assembly 160. Rotary drive 120 is arranged at base 110, rotary seat 130 is connected to rotary drive 120 to rotate under the drive of rotary drive 120, bearing seat 140 is arranged at rotary seat 130 and is used to bear workpiece 200, and the opening of the inner cavity 200a of workpiece 200 faces away from bearing seat 140. Clamping assembly 150 includes first stopper 151, second stopper 152, first clamping piece 153 and second clamping piece 154 arranged in sequence along the circumference of bearing seat 140, first stopper 151 and second stopper 152 are connected to bearing seat 140 respectively, first clamping piece 153 is arranged at rotary seat 130 and is used to push workpiece 200 to abut to first stopper 151, second clamping piece 154 is arranged at rotary seat 130 and is used to push workpiece 200 to abut to second stopper 152, multiple sets of pressure holding assembly 160 are all arranged at rotary seat 130 and are arranged at intervals along the circumference of bearing seat 140, and multiple sets of pressure holding assembly 160 are used to press and hold workpiece 200 on bearing seat 140 after clamping assembly 150 clamps workpiece 200.

[0049] Exemplarily, rotary drive 120 can be a rotary motor.

[0050] Please see Figure 2 And Figure 3 In some embodiments, first stopper 151 and second stopper 152 all include fixed body 1511 and stopper body 1512. Fixed body 1511 is connected to bearing seat 140, stopper body 1512 is inserted and matched with fixed body 1511, stopper body 1512 is arranged at the side of fixed body 1511 towards bearing seat 140 and is used to abut to workpiece 200. Among them, the structure of stopper body 1512 in first stopper 151 and stopper body 1512 in second stopper 152 can be same or different, and the specific can be arranged based on the outer structure of workpiece 200.

[0051] Therefore, through the insertion and cooperation of the stop body 1512 and the fixed body 1511, the stop body 1512 and the fixed body 1511 can be quickly disassembled and assembled, which is beneficial to the quick replacement of the stop body 1512.

[0052] In this embodiment, the fixed body 1511 in the first stop piece 151 and the second stop piece 152 is substantially in a U shape, and the stop body 1512 in the first stop piece 151 and the second stop piece 152 is two.

[0053] Please refer to Figure 2 In some embodiments, the first clamping piece 153 and the second clamping piece 154 each include a clamping driving body 1531 and a pushing body 1532. The clamping driving body 1531 is connected to the rotating seat 130 and located at the side of the bearing seat 140, and the pushing body 1532 is connected to the clamping driving body 1531 to push the workpiece 200 under the drive of the clamping driving body 1531. The structure of the pushing body 1532 in the first clamping piece 153 and the pushing body 1532 in the second clamping piece 154 can be the same or different, which can be set based on the outer structure of the workpiece 200. Exemplarily, the clamping driving body 1531 can be a pneumatic cylinder.

[0054] In some embodiments, the first clamping piece 153 and the second clamping piece 154 each further include a pressure sensor (not shown). The pressure sensor is electrically connected to the pushing body 1532 and the clamping driving body 1531, so that the pushing body 1532 pushes the workpiece 200 with a preset pressure to avoid damage to the workpiece 200 caused by excessive pushing force of the pushing body 1532. The pressure sensor can be provided on the rotating seat 130 or the clamping driving body 1531.

[0055] The pressure sensor can be provided on the rotating seat 130 or the clamping driving body 1531.

[0056] Please refer to Figure 2 In some embodiments, the first stop piece 151 and the first clamping piece 153 are arranged opposite to each other in a first direction, and the second stop piece 152 and the second clamping piece 154 are arranged opposite to each other in a second direction perpendicular to the first direction, so that the first stop piece 151, the second stop piece 152, the first clamping piece 153 and the second clamping piece 154 form a square structure, which is beneficial to the clamping assembly 150 to form uniform force on the workpiece 200 in the horizontal direction, so as to avoid damage caused by uneven force on the workpiece 200.

[0057] In some embodiments, the pressing assembly 160 is four sets, and one set of the pressing assembly 160 is arranged between the first stopper 151 and the second stopper 152, between the second stopper 152 and the first clamping piece 153, between the first clamping piece 153 and the second clamping piece 154, and between the second clamping piece 154 and the first stopper 151, so that the four sets of the pressing assembly 160 can form uniform pressing force on the workpiece 200 in the vertical direction, thereby avoiding damage to the workpiece 200 due to uneven force.

[0058] Referring to Figure 2 and Figure 4 In some embodiments, each set of the pressing assembly 160 includes a pressing driving piece 161, a pressing piece 162, and a limiting piece 163. The pressing driving piece 161 is arranged on the rotating seat 130, the pressing piece 162 is connected to the pressing driving piece 161, the pressing driving piece 161 is used to drive the pressing piece 162 to rotate and lift, so as to press the workpiece 200 to the bearing seat 140, and the limiting piece 163 is arranged on the pressing driving piece 161 and is used to be inserted into the pressing piece 162 after being lowered. The rotation axis of the pressing piece 162 is perpendicular to the rotation axis of the rotating seat 130.

[0059] For example, the pressing driving piece 161 is a composite driving structure including a rotating cylinder and a telescopic cylinder.

[0060] In some embodiments, the pressing piece 162 includes a linkage body 1621 and a pressing body 1622. The linkage body 1621 is connected to the pressing driving piece 161, the pressing body 1622 includes a pressing part 1622a and a limiting part 1622b, the pressing part 1622a is detachably connected to the linkage body 1621 and is used to press the workpiece 200 on the bearing seat 140, the limiting part 1622b is vertically connected to the pressing part 1622a and is provided with a fitting surface 1622c, the fitting surface 1622c is arranged on one side of the limiting part 1622b and faces the pressing part 1622a, and the limiting part 1622b is adapted to the side wall 200c of the inner cavity 200a and is used to fit the side wall 200c of the inner cavity 200a when the pressing part 1622a presses the workpiece 200.

[0061] Therefore, the pressing part 1622a is detachably connected to the linkage body 1621, which facilitates replacement of the pressing body 1622, the limiting part 1622b fits the side wall 200c of the inner cavity 200a when the pressing part 1622a presses the workpiece 200, which can exert an action force on the side wall 200c and improve the stability of the workpiece 200 being fixed.

[0062] Referring to Figure 2 and Figure 3In some embodiments, the carrier 140 comprises a mounting member 141, a plurality of support members 142, a sealing member 143, a suction member 144, and a gas nozzle 145. The mounting member 141 is connected with the first stop member 151 and the second stop member 152, respectively. The plurality of support members 142 are arranged at intervals along the circumference of the mounting member 141, and the two ends of each support member 142 are connected with the rotating seat 130 and the mounting member 141, respectively. The sealing member 143 is arranged on the side of the mounting member 141 away from the rotating seat 130. The suction member 144 is arranged on the side of the sealing member 143 away from the mounting member 141 and is provided with a plurality of suction holes 144a for adsorbing the workpiece 200. The gas nozzle 145 is connected with the side of the mounting member 141 facing the rotating seat 130 and is communicated with the plurality of suction holes 144a, and is used for connecting the vacuum generator.

[0063] Therefore, the plurality of support members 142 can form a space between the rotating seat 130 and the mounting member 141, facilitating the disassembly of the gas nozzle 145, and the plurality of suction holes 144a can adsorb the workpiece 200, thereby avoiding damage to the workpiece 200.

[0064] The working process of the positioning mechanism 100 is as follows:

[0065] First, the pressing driving member 161 drives the pressing member 162 to rotate to a preset position, places the workpiece 200 on the suction member 144, and makes the opening of the inner cavity 200a of the workpiece 200 face upward.

[0066] Second, the clamping driving body 1531 in the first clamping member 153 drives the corresponding pushing body 1532 to push the workpiece 200 to the stop body 1512 of the first stop member 151, and the clamping driving body 1531 in the second clamping member 154 drives the corresponding pushing body 1532 to push the workpiece 200 to the stop body 1512 of the second stop member 152, so as to realize the horizontal positioning of the workpiece 200.

[0067] Then, the gas nozzle 145 draws vacuum on the plurality of suction holes 144a through the vacuum generator, so that the plurality of suction holes 144a adsorb the workpiece 200.

[0068] Finally, the pressing driving member 161 drives the pressing member 162 to rotate and then descend, so that the pressing part 1622a of the pressing member 162 presses the workpiece 200 located on the suction member 144, and the limiting member 163 is inserted into the pressing member 162. At this time, the limiting part 1622b extends into the inner cavity 200a of the workpiece 200, and the abutting surface 1622c of the limiting part 1622b abuts to the side wall 200c of the inner cavity 200a.

[0069] In the positioning mechanism 100, the first clamping piece 153 and the first stop piece 151 in the clamping assembly 150 cooperate to preliminarily position the workpiece 200 in the horizontal direction, the second clamping piece 154 and the second stop piece 152 cooperate to secondarily position the workpiece 200 in the horizontal direction, and the multiple sets of pressing assemblies 160 are used to position the workpiece 200 in the vertical direction in a multi-point pressing manner, so that the positioning mechanism 100 forms a hierarchical positioning on the workpiece 200, and damage to the side wall 200c of the inner cavity 200a of the workpiece 200 can be reduced. In addition, the rotary driving piece 120 can drive the rotary seat 130 to rotate the workpiece 200 when the machining mechanism is machining the workpiece 200, so as to shorten the use cycle of the machining mechanism, thereby reducing the machining cost.

[0070] The utility model embodiment further provides a machining device (not shown), including machining mechanism (not shown) and the positioning mechanism 100 described above. The machining mechanism includes a tool, the tool is used to extend into the inner cavity 200a of the workpiece 200 to process the undercut 200d on the side wall 200c and bottom wall 200b, wherein, during machining the undercut 200d, the rotary driving piece 120 can drive the rotary seat 130 to rotate the workpiece 200.

[0071] The clamping assembly 150 and the multiple sets of pressing assemblies 160 in the machining device form a hierarchical positioning on the workpiece 200, and damage to the side wall 200c of the inner cavity 200a of the workpiece 200 can be reduced. In addition, the rotary driving piece 120 can drive the rotary seat 130 to rotate the workpiece 200 when the machining mechanism is machining the workpiece 200, so as to shorten the use cycle of the machining mechanism, thereby reducing the machining cost.

[0072] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary only, and are not limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes coming within the meaning and range of equivalents of the claims are intended to be embraced therein.

[0073] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application rather than limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A positioning mechanism for positioning a workpiece having an open inner cavity, characterized in that: The positioning mechanism comprises: a base; a rotating driving member arranged on the base; a rotating seat connected to the rotating driving member and rotating under the driving of the rotating driving member; a bearing seat arranged on the rotating seat and used for bearing a workpiece, an opening of an inner cavity of the workpiece facing away from the bearing seat; a clamping assembly comprising a first stopper, a second stopper, a first clamping member and a second clamping member arranged in sequence along a circumference of the bearing seat, the first stopper and the second stopper being connected to the bearing seat respectively, the first clamping member being arranged on the rotating seat and used for pushing the workpiece to abut against the first stopper, the second clamping member being arranged on the rotating seat and used for pushing the workpiece to abut against the second stopper; and a plurality of sets of pressing assemblies, each set of the pressing assemblies being arranged on the rotating seat and spaced along the circumference of the bearing seat, the plurality of sets of the pressing assemblies being used for pressing the workpiece on the bearing seat after the workpiece is clamped by the clamping assembly.

2. The positioning mechanism of claim 1, wherein, The first stopper and the second stopper each comprise: a fixed body connected to the bearing seat; a stopper body in plug-in cooperation with the fixed body, the stopper body being arranged on a side of the fixed body facing the bearing seat and used for abutting against the workpiece.

3. The positioning mechanism of claim 1, wherein The first clamping member and the second clamping member each comprise: a clamping driving body connected to the rotating seat and located at a side of the bearing seat; a pushing body connected to the clamping driving body and used for pushing the workpiece under the driving of the clamping driving body.

4. The positioning mechanism of claim 3, wherein The first clamping member and the second clamping member each further comprise: a pressure sensor electrically connected to the pushing body and the clamping driving body, so that the pushing body pushes the workpiece with a preset pressure.

5. The positioning mechanism of claim 1, wherein The first stopper and the first clamping member are arranged opposite to each other in a first direction, and the second stopper and the second clamping member are arranged opposite to each other in a second direction perpendicular to the first direction.

6. The positioning mechanism of claim 5, wherein The pressing assemblies are four sets, and one set of the pressing assemblies is arranged between the first stopper and the second stopper, between the second stopper and the first clamping member, between the first clamping member and the second clamping member, and between the second clamping member and the first stopper respectively.

7. The positioning mechanism of claim 1, wherein Each set of the pressing assemblies comprises: a pressing driving member arranged on the rotating seat; a pressing member connected to the pressing driving member, the pressing driving member being used for driving the pressing member to rotate and lift, so as to press the workpiece to the bearing seat; and a limiting member arranged on the pressing driving member and used for plugging the pressing member after the pressing member is lowered. The rotating shaft of the pressing member is perpendicular to the rotating shaft of the rotating seat.

8. The positioning mechanism of claim 7, wherein, The pressing member comprises: a linkage body connected to the pressing driving member; a pressing body comprising a pressing part and a limiting part, the pressing part being detachably connected to the linkage body and used for pressing the workpiece on the bearing seat, and the limiting part being connected to the pressing part perpendicularly and provided with an abutting surface, the abutting surface being arranged on a side of the limiting part facing the pressing part and used for abutting against a side wall of the inner cavity when the pressing part presses the workpiece.

9. The positioning mechanism of claim 1, wherein, The bearing seat comprises: a mounting member connected to the first stopper and the second stopper respectively. a plurality of supporting members, spaced along a circumference of the mounting member, and each of the supporting members has two ends connected to the rotating seat and the mounting member, respectively; a sealing member arranged on a side of the mounting member away from the rotating seat; a suction member arranged on a side of the sealing member away from the mounting member and having a plurality of suction holes for suctioning the workpiece; and an air nozzle connected to a side of the mounting member facing the rotating seat and communicating with the plurality of suction holes, the air nozzle being used for connecting a vacuum generator.

10. A processing device, characterized by comprising: the positioning mechanism according to any one of claims 1 to 9; a processing mechanism comprising a tool for extending into the inner cavity to process the side wall and the bottom wall of the inner cavity.

Images