CNC automatic feeding and discharging universal positioning clamp

Abstract

The utility model discloses a CNC (computer numerical control) automatic feeding and discharging universal positioning fixture which comprises a machine tool fixing mechanism, a positioning mechanism, a positioning mechanism, a positioning mechanism and a positioning mechanism, the machine tool fixing mechanism can be mounted on a CNC machine tool, and a preset moving track is arranged on the machine tool fixing mechanism; the clamping device comprises a plurality of clamping parts, the clamping parts are arranged at the top of a machine tool fixing mechanism, and all the clamping parts can synchronously get close to or get away from each other along a preset moving track on the machine tool fixing mechanism to form clamping force. According to the CNC automatic feeding and discharging universal positioning clamp, four sets of preset moving tracks are arranged on the machine tool fixing mechanism, and the clamping parts matched with the preset moving tracks are arranged on the machine tool fixing mechanism; the air cylinder positioning part is matched with the preset moving track and the air cylinder to push all the clamping parts to synchronously move so as to adjust the distance between all the clamping parts, so that different clamped objects are adapted, and the effect of being convenient to use is achieved.

Description

Technical Field

[0001] This utility model relates to the field of CNC fixture technology, and in particular to a universal positioning fixture for automatic loading and unloading of CNC components. Background Technology

[0002] CNC is short for CNC machine tool. A CNC machine tool automatically processes parts according to a pre-programmed machining program. We compile the machining process route, process parameters, tool movement trajectory, displacement, cutting parameters, and auxiliary functions into a machining program sheet according to the instruction codes and program format specified by the CNC machine tool. The contents of this program sheet are then recorded on a control medium and input into the CNC device of the CNC machine tool, thereby directing the machine tool to process the parts.

[0003] When using CNC machining, in order to ensure the accuracy of the placement of the object to be processed, a positioning fixture is needed to position the object, and then the vacuum device on the robotic arm is used to pick up the object to be processed and transfer it to the machining platform through the robotic arm, which improves the accuracy of the robotic arm in placing the object to be processed.

[0004] Chinese Patent Announcement No. CN 207464712 U discloses a utility model patent entitled "A CNC Fixture Standard Mold Frame", which includes a base plate, on which a support plate is provided. There are two support plates, which are respectively set at the left and right ends of the base plate. The front ends of the two support plates are connected to the pads by threads. Rotary cylinders are provided on the upper part of both sides of the pads. The rotary cylinders are provided with cylinder heads. Positioning pins are provided on the pads.

[0005] The above-mentioned utility model is a reusable CNC fixture standard mold base that improves work efficiency and enables quick switching and positioning of fixtures.

[0006] However, in actual use, it was found that when glass covers are machined by CNC, most use automatic loading and unloading. Different sizes require different positioning fixtures, and changing to different models necessitates changing the positioning fixtures. This requires a lengthy adjustment period after fixture replacement, impacting production efficiency.

[0007] Therefore, this application proposes a universal positioning fixture for automatic loading and unloading of CNC machines, which can be adapted to various types of machined objects and improve production efficiency. Utility Model Content

[0008] Based on this, it is necessary to provide a universal positioning fixture for automatic loading and unloading of CNC machines to address the aforementioned technical problems. Four sets of predetermined movement trajectories are set on the machine tool fixing mechanism, and clamping parts adapted to the predetermined movement trajectories are set on the machine tool fixing mechanism. By cooperating with the predetermined movement trajectories and the cylinder positioning part, all clamping parts are moved synchronously to adjust the distance between all clamping parts, thereby adapting to different clamped objects and achieving the effect of convenient use.

[0009] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0010] A universal positioning fixture for automatic loading and unloading of CNC machines, which is used for positioning glass covers.

[0011] The CNC automatic loading and unloading universal positioning fixture specifically includes:

[0012] A machine tool fixing mechanism, which can be installed on a CNC machine tool, and a predetermined movement trajectory is provided on the machine tool fixing mechanism;

[0013] The clamping part is provided in multiple ways. All the clamping parts are provided on the top of the machine tool fixing mechanism. All the clamping parts can move closer or further away from the machine tool fixing mechanism synchronously along a predetermined moving trajectory to form a clamping force.

[0014] A cylinder positioning part is provided at the bottom of the clamping part and extends from a predetermined movement trajectory on the machine tool fixing mechanism to the bottom of the machine tool fixing mechanism;

[0015] The cylinder positioning part can be connected to an external cylinder, and the cylinder drives the clamping part to move through the cylinder positioning part.

[0016] As a preferred embodiment of the universal positioning fixture for automatic loading and unloading of CNC provided by this utility model, the machine tool fixing mechanism includes a fixture base, and the top of the fixture base is provided with guide grooves extending from the four sides to the center, and the two adjacent guide grooves are arranged at a vertical angle.

[0017] As a preferred embodiment of the universal positioning fixture for CNC automatic loading and unloading provided by this utility model, the clamping part includes a base clamping plate, and the number of the base clamping plates is four, with the four base clamping plates being parallel to the four sides of the fixture base respectively.

[0018] Each of the base plates is provided with a locking pin hole that matches the guide groove. The cylinder positioning part is inserted into the locking pin hole through the guide groove. The cylinder positioning part drives all the base plates to move closer or separate through the cylinder.

[0019] As a preferred embodiment of the universal positioning fixture for CNC automatic loading and unloading provided by this utility model, a separable auxiliary clamping plate is provided on the base clamping plate, and the bottom of the end of the auxiliary clamping plate overlaps with the top of the fixture base.

[0020] As a preferred embodiment of the CNC automatic loading and unloading universal positioning fixture provided by this utility model, the auxiliary clamping plate includes a connecting piece, the bottom of the connecting piece overlaps with the top of the base clamping plate, the connecting piece is provided with a connecting hole adapted to the locking pin hole, and the cylinder positioning part can pass through the locking pin hole and the connecting hole respectively to fix the connecting piece.

[0021] An auxiliary clamping block is provided on the side of the connecting piece facing the axis of the clamp base, and the bottom of the auxiliary clamping block overlaps with the top of the clamp base.

[0022] As a preferred embodiment of the CNC automatic loading and unloading universal positioning fixture provided by this utility model, the guide grooves are in groups of two, the position of the locking pin hole on each base clamp plate is adapted to the position of a group of guide grooves, and the number of cylinder positioning parts is equal to the number of all guide grooves, and the cylinder positioning parts penetrate all guide grooves.

[0023] As a preferred embodiment of the universal positioning fixture for CNC automatic loading and unloading provided by this utility model, the cylinder positioning part includes a cylinder positioning column, and a pin is provided at the center of the top of the cylinder positioning column. The pin is used to fix the base clamping plate.

[0024] As a preferred embodiment of the universal positioning fixture for CNC automatic loading and unloading provided by this utility model, one end of the cylinder positioning column extends into the interior of the guide groove, and the other end of the cylinder positioning column is connected to the cylinder.

[0025] The pin can be inserted into the locking pin hole or the connecting hole to lock the position of the base clamping plate or the auxiliary clamping plate.

[0026] As a preferred embodiment of the universal positioning fixture for CNC automatic loading and unloading provided by this utility model, the top of the pin is provided with a recessed threaded hole, and a nut can be installed in the threaded hole to fix the base clamping plate and / or auxiliary clamping plate.

[0027] As a preferred embodiment of the universal positioning fixture for CNC automatic loading and unloading provided by this utility model, the fixture base is provided with mounting positioning grooves symmetrically arranged on the side.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The universal positioning fixture for automatic loading and unloading of CNC machines provided by this utility model has four sets of predetermined movement trajectories set on the machine tool fixing mechanism, and clamping parts adapted to the predetermined movement trajectories are set on the machine tool fixing mechanism. By using the cylinder positioning part to cooperate with the predetermined movement trajectories and the cylinder to push all clamping parts to move synchronously, the distance between all clamping parts can be adjusted to adapt to different clamped objects, thus achieving the effect of convenient use.

[0030] The universal positioning fixture for automatic loading and unloading of CNC provided by this utility model can clamp smaller objects by adding an auxiliary clamping plate above the base clamping plate and making the gap between the clamps smaller. Attached Figure Description

[0031] To more clearly illustrate the solutions in this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 This is a structural schematic diagram of the present invention;

[0033] Figure 2 A bottom view of the structure provided by this utility model;

[0034] Figure 3 This is a schematic diagram of the clamping and positioning of the large glass cover plate of this utility model;

[0035] Figure 4 This is a schematic diagram of the clamping and positioning small glass cover plate of this utility model;

[0036] Figure 5 This is a schematic diagram of the auxiliary clamping plate in this utility model.

[0037] The markings in the diagram are explained as follows:

[0038] 1. Machine tool fixing mechanism; 101. Fixture base; 102. Guide groove; 103. Mounting and positioning groove;

[0039] 2. Clamping part; 201. Basic clamping plate; 202. Locking pin hole; 203. Auxiliary clamping plate; 2031. Connecting piece; 2032. Auxiliary clamping block; 2033. Connecting hole;

[0040] 3. Cylinder positioning part; 301. Cylinder positioning pin; 302. Pin;

[0041] 4. Large glass cover;

[0042] 5. Small glass cover. Detailed Implementation

[0043] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0044] As described in the background section, changing the fixture requires a long time for machine adjustment, which affects production efficiency.

[0045] To solve this technical problem, this utility model provides a universal positioning fixture for automatic loading and unloading of CNC machines, which is used for positioning glass covers.

[0046] For details, please refer to Figure 1-3 The CNC automatic loading and unloading universal positioning fixture specifically includes:

[0047] Machine tool fixing mechanism 1, which can be installed on a CNC machine tool, and a predetermined movement trajectory is set on the machine tool fixing mechanism 1;

[0048] Clamping part 2, multiple clamping parts 2 are provided, and multiple clamping parts 2 are all provided on the top of the machine tool fixing mechanism 1. All clamping parts 2 can synchronously move closer or further away along a predetermined moving trajectory on the machine tool fixing mechanism 1 to form a clamping force.

[0049] The cylinder positioning part 3 is provided at the bottom of the clamping part 2 and extends from the predetermined moving trajectory on the machine tool fixing mechanism 1 to the bottom of the machine tool fixing mechanism 1.

[0050] The cylinder positioning part 3 can be connected to an external cylinder, and the cylinder drives the clamping part 2 to move through the cylinder positioning part 3.

[0051] This utility model provides a universal positioning fixture for automatic CNC loading and unloading. Four predetermined movement paths are set on the machine tool fixing mechanism 1, and clamping parts 2 adapted to these predetermined movement paths are provided on the machine tool fixing mechanism 1. A cylinder positioning part 3, in cooperation with the predetermined movement paths and the cylinder, pushes all clamping parts 2 to move synchronously, thereby adjusting the distance between all clamping parts 2 to accommodate different objects and achieve ease of use. By adding an auxiliary clamping plate 203 above the base clamping plate 201, the gap between the clamps is further reduced, enabling the clamping of even smaller objects.

[0052] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0053] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0054] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0055] Example 1

[0056] Please refer to Figures 1-2 A universal positioning fixture for automatic loading and unloading in CNC machining includes a machine tool fixing mechanism 1, a clamping part 2, and a cylinder positioning part 3. The machine tool fixing mechanism 1 can be mounted on a CNC machine tool and has a predetermined movement trajectory for positioning the main body of the fixture. Multiple clamping parts 2 are provided, all located at the top of the machine tool fixing mechanism 1. All clamping parts 2 can synchronously move closer to or further away from the machine tool fixing mechanism 1 along the predetermined movement trajectory to generate clamping force. The cylinder positioning part 3 is located at the bottom of the clamping parts 2 and extends from the predetermined movement trajectory on the machine tool fixing mechanism 1 to the bottom of the machine tool fixing mechanism 1. The cylinder positioning part 3 can be connected to an external cylinder, which drives the clamping parts 2 to move through the cylinder positioning part 3, achieving clamping and positioning of the object.

[0057] Example 2

[0058] The universal positioning fixture for automatic CNC loading and unloading provided in Embodiment 1 has been further optimized, specifically, as follows: Figure 1 and Figure 2 As shown, the machine tool fixing mechanism 1 includes a clamping base 101, which is mounted on the machine tool's operating table by bolts or the like. Each clamping base 101 has guide grooves 102 extending from its four sides towards the center on its top. These guide grooves 102 form a predetermined movement trajectory for the clamping part 2, allowing it to move along the guide grooves 102. Adjacent guide grooves 102 are arranged at a perpendicular angle, enabling the clamping part 2 to clamp and position the object from all four sides. This effectively pushes the object to the center position of the clamping base 101 without manual position calibration, improving the convenience of clamping and positioning objects. The clamping base 101 also has symmetrically arranged mounting positioning grooves 103 on its sides. By engaging with the positioning on the machine tool using these mounting positioning grooves 103, the clamping base 101 can be accurately mounted on the machine tool without excessive adjustment, further enhancing convenience.

[0059] Example 3

[0060] The universal positioning fixture for automatic CNC loading and unloading provided in Embodiment 2 has been further optimized, such as... Figures 1-3 As shown, the clamping part 2 includes four base clamping plates 201. The four base clamping plates 201 are parallel to the four sides of the clamping base 101, thereby applying pressure to the object from four directions, causing the object to first move towards the center of the clamping base 101. After the object moves to the center position, the four base clamping plates 201 simultaneously apply clamping force to the object, completely positioning it.

[0061] Each base clamping plate 201 has a locking pin hole 202 that matches the guide groove 102. The cylinder positioning part 3 penetrates the guide groove 102 and inserts into the locking pin hole 202 to position the base clamping plate 201. To further improve the stability of the base clamping plate 201, the locking pin hole 202 and the cylinder positioning part 3 can be fixedly connected, such as by using bolts. The cylinder positioning part 3 drives all the base clamping plates 201 to move closer or separate via a cylinder.

[0062] like Figure 4 As shown, in order to clamp smaller objects, the base clamping plate 201 is provided with separable auxiliary clamping plates 203. The opposing surfaces of all auxiliary clamping plates 203 extend forward, so that they can fit together to clamp and position small objects after the base clamping plate 201 has made its maximum stroke displacement. The bottom of the end of the auxiliary clamping plate 203 overlaps with the top of the clamping base 101, thereby avoiding gaps between the bottom of the auxiliary clamping plate 203 and the top of the clamping base 101, which would prevent the clamping and positioning of thin objects.

[0063] In specific implementation, such as Figure 5 As shown, the auxiliary clamping plate 203 includes a connecting piece 2031. The bottom of the connecting piece 2031 overlaps with the top of the base clamping plate 201. The connecting piece 2031 has a connecting hole 2033 that matches the locking pin hole 202. The cylinder positioning part 3 can pass through the locking pin hole 202 and the connecting hole 2033 respectively to fix the connecting piece 2031. This ensures that the connecting piece 2031 is stably fixed to the top of the base clamping plate 201.

[0064] An auxiliary clamping block 2032 is provided on the side of the connecting piece 2031 facing the axis of the clamp base 101. The auxiliary clamping blocks 2032 all extend towards the middle of the clamp base 101, thereby reducing the blank area in the middle of the clamp and realizing the clamping of small objects. The bottom of the auxiliary clamping block 2032 overlaps with the top of the clamp base 101, which can realize the clamping of thin objects.

[0065] Example 4

[0066] The universal positioning fixture for automatic CNC loading and unloading provided in the above embodiments is further optimized, such as... Figure 1 and Figure 2 As shown, the guide grooves 102 are grouped in pairs, and the position of the locking pin hole 202 on each base clamping plate 201 is adapted to the position of a group of guide grooves 102. By setting two guide grooves 102 as a group, and cooperating with the cylinder positioning part 3 and the locking pin hole 202, the movement path of the base clamping plate 201 can be completely restricted, avoiding the problem of possible rotation of the base clamping plate 201 due to single-point restriction. Moreover, the number of cylinder positioning parts 3 is equal to the number of all guide grooves 102, and the cylinder positioning parts 3 penetrate all guide grooves 102. By driving the base clamping plate 201 at two points simultaneously, the clamping and positioning of the base clamping plate 201 can be more stable.

[0067] Example 5

[0068] The universal positioning fixture for automatic CNC loading and unloading provided in the above embodiments is further optimized, such as... Figure 1 As shown, the cylinder positioning part 3 includes a cylinder positioning pin 301. A pin 302 is mounted on the top of the cylinder positioning pin 301, and the pin 302 is used to fix the base clamping plate 201. One end of the cylinder positioning pin 301 extends into the interior of the guide groove 102, and the other end of the cylinder positioning pin 301 is connected to the cylinder, so that the cylinder can drive the cylinder positioning pin 301 to move. The pin 302 can be inserted into the locking pin hole 202 and the connecting hole 2033 to lock the position of the base clamping plate 201 or the auxiliary clamping plate 203. When the cylinder positioning pin 301 is displaced, the pin 302 will drive the base clamping plate 201 and the connecting plate 2031 connected to the pin 302 to move. The top of the pin 302 is provided with a recessed threaded hole, in which a nut can be installed to fix the base clamping plate 201 and / or the auxiliary clamping plate 203. To prevent the base clamp 201 or auxiliary clamp 203 from detaching from the end of the pin 302, and the auxiliary clamp 203 can also be easily installed and removed as needed.

[0069] The usage process of the universal positioning fixture for automatic CNC loading and unloading provided by this utility model is as follows:

[0070] The large glass cover plate 4 is placed between all the base clamping plates 201 on top of the clamping base 101. A cylinder pushes all the base clamping plates 201, causing the locking pin holes 202 on each base clamping plate 201 to move towards the large glass cover plate 4, creating a clamping force. At this point, the large glass cover plate 4 is pushed to the center point of the clamping base 101 and ultimately clamped and positioned by the combined force of all the base clamping plates 201. When the object to be clamped is too small, such as a small glass cover plate 5, directly clamping and positioning it through the base clamping plates 201 would result in the small glass cover plate 5 being located in the hollow area at the center of all the base clamping plates 201. In this case, an auxiliary clamping plate 203 can be added to reduce the blank area and clamp the small glass cover plate 5. The above clamping process can adapt to objects of various sizes, is convenient to use, and can effectively improve processing efficiency.

[0071] After the object to be processed is positioned by the fixture, the robotic arm in the CNC machine uses a vacuum suction device to grasp the object from the fixture and deliver it to the processing platform for processing. This process improves the accuracy of the robotic arm's object delivery and reduces delivery errors.

[0072] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0073] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A universal positioning fixture for automatic loading and unloading in CNC machining, characterized in that, It includes: A machine tool fixing mechanism (1) is provided, which can be installed on a CNC machine tool and has a predetermined movement trajectory. Clamping part (2), multiple clamping parts (2) are provided, and multiple clamping parts (2) are all provided on the top of the machine tool fixing mechanism (1). All clamping parts (2) can synchronously move closer or further away from the machine tool fixing mechanism (1) along a predetermined moving trajectory to form a clamping force. The cylinder positioning part (3) is provided at the bottom of the clamping part (2) and extends from the predetermined movement trajectory on the machine tool fixing mechanism (1) to the bottom of the machine tool fixing mechanism (1); The cylinder positioning part (3) can be connected to an external cylinder, and the cylinder drives the clamping part (2) to move through the cylinder positioning part (3).

2. The universal positioning fixture for CNC automatic loading and unloading as described in claim 1, characterized in that, The machine tool fixing mechanism (1) includes a clamp base (101), and the top of the clamp base (101) is provided with guide grooves (102) extending from the four sides to the center, and two adjacent guide grooves (102) are arranged at a vertical angle.

3. The universal positioning fixture for CNC automatic loading and unloading according to claim 2, characterized in that, The clamping part (2) includes a base clamping plate (201), and the number of base clamping plates (201) is four. The four base clamping plates (201) are parallel to the four sides of the clamp base (101); Each of the base clamps (201) is provided with a locking pin hole (202) that matches the guide groove (102). The cylinder positioning part (3) passes through the guide groove (102) and is inserted into the inside of the locking pin hole (202). The cylinder positioning part (3) drives all the base clamps (201) to move closer or separate through the cylinder.

4. The universal positioning fixture for CNC automatic loading and unloading according to claim 3, characterized in that, The base clamp (201) is provided with a separable auxiliary clamp (203), and the bottom of the end of the auxiliary clamp (203) overlaps with the top of the clamp base (101).

5. The universal positioning fixture for CNC automatic loading and unloading according to claim 4, characterized in that, The auxiliary clamp (203) includes a connecting piece (2031), the bottom of which overlaps with the top of the base clamp (201). The connecting piece (2031) has a connecting hole (2033) that matches the locking pin hole (202). The cylinder positioning part (3) can pass through the locking pin hole (202) and the connecting hole (2033) respectively to fix the connecting piece (2031). The connecting piece (2031) has an auxiliary clamping block (2032) on the side facing the axis of the clamp base (101), and the bottom of the auxiliary clamping block (2032) overlaps with the top of the clamp base (101).

6. The universal positioning fixture for CNC automatic loading and unloading according to claim 3, characterized in that, The guide grooves (102) are in pairs. The position of the locking pin hole (202) on each base plate (201) is adapted to the position of a set of guide grooves (102). The number of cylinder positioning parts (3) is equal to the number of all guide grooves (102), and the cylinder positioning parts (3) penetrate all guide grooves (102).

7. The universal positioning fixture for CNC automatic loading and unloading according to claim 3, characterized in that, The cylinder positioning part (3) includes a cylinder positioning column (301), and a pin (302) is provided on the top axis of the cylinder positioning column (301). The pin (302) is used to fix the base clamp (201).

8. The universal positioning fixture for CNC automatic loading and unloading according to claim 7, characterized in that, One end of the cylinder positioning post (301) extends into the interior of the guide groove (102), and the other end of the cylinder positioning post (301) is connected to the cylinder; The pin (302) can be inserted into the locking pin hole (202) or the connecting hole (2033) to lock the position of the base clamping plate (201) or the auxiliary clamping plate (203).

9. The universal positioning fixture for CNC automatic loading and unloading according to claim 8, characterized in that, The top of the pin (302) is provided with a recessed threaded hole, in which a nut can be installed to fix the base clamp (201) and / or the auxiliary clamp (203).

10. The universal positioning fixture for automatic loading and unloading of CNC machines according to any one of claims 2-9, characterized in that, The clamp base (101) is provided with symmetrical mounting and positioning grooves (103) on its side.

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