Positioning clamp for optical curve die machining

Abstract

The utility model discloses a positioning fixture for machining an optical curve die, which relates to the technical field of positioning fixtures and comprises a fixture fixing frame, a primary positioning mechanism capable of lifting is connected onto the fixture fixing frame, and rotation adjusting mechanisms for rotating and clamping are slidably arranged at two ends of the fixture fixing frame. The positioning fixture for machining the optical curve die solves the problems that an existing positioning fixture for machining the optical curve die cannot conduct multi-angle transformation and fixation on a special-shaped workpiece in the optical curve die and is difficult to meet the multi-directional machining requirement, through the arrangement of the preliminary positioning mechanism, the lifting frame is used for supporting the optical curve die, and through the arrangement of the rotation adjusting mechanism, the positioning fixture is convenient to use. After the lifting frame is adjusted to the fixed height, the L-shaped frame can change the fixed position along the clamping groove to clamp the two sides of the die, the two inserting assemblies and the lifting frame are arranged in a matched mode to fix the end points of the two sides of a special-shaped workpiece in the optical curve die, meanwhile, the rotating motor rotates, and the lifting frame descends to achieve multi-angle rotation.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning fixtures, in particular to a positioning fixture for processing optical curve moulds. Background Art

[0002] The positioning fixture for optical curve mold processing is a fixture used to accurately control and position the workpiece. It is mainly used in precision machining equipment such as optical curve grinders. Its main function is to maintain the precise positioning of the workpiece during the processing to ensure processing accuracy and work efficiency.

[0003] The publication number is CN217371941U. A positioning clamping fixture module and an optical curve grinder, wherein the positioning clamping fixture module comprises a clamping fixture and an auxiliary top block for positioning and clamping a product; the clamping fixture comprises a base, a fixed block fixedly arranged on the base, a sliding block slidably arranged on the base, and a driving member for driving the sliding block to move toward the fixed block to clamp the base of the product; the auxiliary top block is detachably mounted on the fixed block, the auxiliary top block has a supporting surface, a side portion of the base is provided with a to-be-processed portion protruding outward, and the to-be-processed portion is pressed against one end of the base toward the bottom. On the supporting surface; the auxiliary top block is provided with a penetrating arc-shaped adjustment hole, and a threaded connector is slidably penetrated on the arc-shaped adjustment hole, and the threaded connector is used to be threadedly connected with the threaded hole on the fixed block. The optical curve grinder includes a workbench, a grinding wheel module and a positioning clamping fixture module. The utility model can accurately position the product, which is beneficial to improving the processing efficiency and processing accuracy. However, the positioning fixture for optical curve mold processing cannot perform multi-angle transformation and fixation for the heterogeneous workpiece in the optical curve mold, so that the processing direction of the optical curve mold is relatively fixed, and it is difficult to adapt to multi-directional processing needs.

[0004] In view of the above problems, a positioning fixture for optical curve mold processing is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a positioning fixture for optical curve mold processing, which solves the problem that the existing positioning fixture for optical curve mold processing in the background technology cannot perform multi-angle transformation and fixation on the heterogeneous workpiece in the optical curve mold, making the direction of optical curve mold processing relatively fixed and difficult to adapt to multi-directional processing needs.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a positioning fixture for optical curve mold processing, comprising a fixture fixing frame, a preliminary positioning mechanism that can be raised and lowered is connected to the fixture fixing frame, and a rotation adjustment mechanism for rotational clamping is slidably arranged at both ends of the fixture fixing frame, the fixture fixing frame comprises a guide frame, and slots are provided on both sides of the guide frame, the preliminary positioning mechanism comprises a lifting frame that is raised and lowered, the rotation adjustment mechanism comprises an L-shaped frame that is slidably engaged along the slot, the rotation adjustment mechanism is provided with two groups that are mirror-symmetrical about the preliminary positioning mechanism, one side of the L-shaped frame is connected to a side frame, and a plug-in assembly is movably sleeved on the side frame, and one end of the plug-in assembly on one group of the rotation adjustment mechanisms is connected to a rotating motor.

[0007] Preferably, the clamp fixing frame further comprises support frames arranged at four corners of the lower end of the guide frame, and the lower ends of the support frames are connected to a bottom plate.

[0008] Preferably, guide grooves are provided on both sides of the guide frame.

[0009] Preferably, the fixture fixing frame further comprises four sets of sleeve connecting rods fixedly arranged at the lower end of the guide frame, and a preliminary positioning mechanism is movably sleeved in the sleeve connecting rods.

[0010] Preferably, the preliminary positioning mechanism also includes a driving cylinder arranged at the center of the lower end of the guide frame, the lifting frame is connected to the lifting end of the driving cylinder, the four corners of the lower end of the lifting frame are connected to guide rods, and the guide rods are movably inserted into the sleeve rod.

[0011] Preferably, extension grooves are provided at upper and lower corresponding positions of the lifting frame and the guide groove, and both ends of the lifting frame are arranged as narrow openings.

[0012] Preferably, the rotation adjustment mechanism further comprises a fixing component inserted into the L-shaped frame and the slot, the fixing component comprises a plug-in rod, a thread is formed on the upper end of the plug-in rod, and a knob is sleeved on the thread.

[0013] Preferably, one end of the plug-in assembly is connected to a turntable short-connection post and a turntable long-connection post, and the turntable short-connection post and the turntable long-connection post are respectively provided in two groups and arranged in a circular array.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. The utility model provides a positioning fixture for processing an optical curve mold. Through the setting of a preliminary positioning mechanism, a lifting frame can be raised and lowered to change the fixed height to support the optical curve mold. Since the shape of this optical curve mold is inconsistent, it is impossible to position and calibrate it with respect to the rotation adjustment mechanism. Therefore, a lift frame that can be raised and lowered is provided for assistance before fixation, which preliminarily solves the support problem of the existing positioning fixture for processing optical curve molds before clamping.

[0016] 2. The utility model provides a positioning fixture for processing an optical curve mold. Through the setting of a rotating adjustment mechanism, when the lifting frame is adjusted to a fixed height, the L-shaped frame can change the fixed position along the card slot to clamp the mold on both sides. The setting of the plug-in component squeezes the optical curve mold on both sides. After the fixation is completed, the lifting frame descends. At this time, a rotating motor connected to a set of rotating adjustment mechanisms can be driven to drive two sets of plug-in components to rotate synchronously with the optical curve mold. The combination of the two plug-in components and the lifting frame can fix the endpoints on both sides of the heterogeneous workpiece in the optical curve mold. At the same time, the rotating motor rotates, and the lifting frame descends to realize multi-angle rotation to adapt to multi-directional processing needs. It solves the problem that the existing positioning fixture for processing optical curve molds cannot perform multi-angle change and fixation on the heterogeneous workpiece in the optical curve mold, making the processing direction of the optical curve mold relatively fixed and difficult to adapt to multi-directional processing needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 ;

[0018] Figure 2 It is a schematic diagram of the overall front view structure of the utility model;

[0019] Figure 3 The overall structure of the utility model is shown in FIG. Figure 2 ;

[0020] Figure 4 It is a schematic diagram of the descending structure of the preliminary positioning mechanism of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the rotation adjustment mechanism of the utility model.

[0022] In the figure: 1. clamp fixing frame; 11. bottom plate; 12. support frame; 13. guide frame; 131. guide groove; 132. clamping groove; 14. sleeve rod; 2. preliminary positioning mechanism; 21. driving cylinder; 22. lifting frame; 221. extension groove; 222. narrow mouth; 23. guide rod; 3. rotation adjustment mechanism; 31. L-shaped frame; 32. fixing assembly; 321. plug-in rod; 322. thread; 323. knob; 33. side frame; 34. plug-in assembly; 341. turntable short-connection column; 342. turntable long-connection column; 35. rotating motor. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0025] Combination Figure 1 The utility model discloses a positioning fixture for processing an optical curve mold, comprising a fixture fixing frame 1, a preliminary positioning mechanism 2 which can be lifted and lowered is connected to the fixture fixing frame 1, a rotation adjustment mechanism 3 for rotational clamping is slidably arranged at both ends of the fixture fixing frame 1, the fixture fixing frame 1 comprises a guide frame 13, and slots 132 are provided on both sides of the guide frame 13, the preliminary positioning mechanism 2 comprises a lifting frame 22 which is lifted and lowered, the rotation adjustment mechanism 3 comprises an L-shaped frame 31 which is slidably engaged along the slot 132, the rotation adjustment mechanism 3 comprises two groups which are mirror-symmetrical about the preliminary positioning mechanism 2, one side of the L-shaped frame 31 is connected to a side frame 33, a plug-in assembly 34 is movably sleeved on the side frame 33, and one end of the plug-in assembly 34 on one group of the rotation adjustment mechanisms 3 is connected to a rotating motor 35.

[0026] Specifically, the lifting frame 22 can be raised and lowered to change the fixed height, and is used to support the optical curve mold. Due to the inconsistent shape of this optical curve mold, it is impossible to position and calibrate it with respect to the rotating adjustment mechanism 3. Therefore, a lift frame 22 that can be raised and lowered is provided to assist before fixation. When the lifting frame 22 is adjusted to a fixed height, the L-shaped frame 31 can change the fixed position along the card slot 132 to clamp the mold on both sides. The setting of the plug-in component 34 squeezes the optical curve mold on both sides. After the fixation is completed, the lifting frame 22 descends. At this time, a set of rotating motors 35 connected to the rotating adjustment mechanism 3 can be driven to drive two sets of plug-in components 34 to rotate synchronously with the optical curve mold. The combination of the two plug-in components 34 and the lifting frame 22 is used to fix the endpoints on both sides of the heterogeneous workpiece in the optical curve mold. At the same time, the rotating motor 35 rotates, and the lifting frame 22 descends to achieve multi-angle rotation to meet multi-directional processing needs.

[0027] The utility model is further described below in conjunction with embodiments.

[0028] Embodiment 1:

[0029] Combination Figure 2-Figure 4 The fixture fixing frame 1 also includes a support frame 12 arranged at the four corners of the lower end of the guide frame 13, and the lower end of the support frame 12 is connected to the bottom plate 11. The bottom plate 11 and the support frame 12 are fixed to each other and cooperate with the guide frame 13 to complete the support.

[0030] Guide grooves 131 are formed on both sides of the guide frame 13 . The guide grooves 131 are formed in conjunction with the clamping grooves 132 . The rotation adjustment mechanism 3 moves in the guide grooves 131 , and the rotation adjustment mechanism 3 is inserted into the clamping grooves 132 .

[0031] The fixture fixing frame 1 further comprises four sets of sleeve rods 14 fixedly arranged at the lower end of the guide frame 13 , in which the preliminary positioning mechanism 2 is movably sleeved, and the sleeve rods 14 realize lifting and lowering positioning of the preliminary positioning mechanism 2 .

[0032] The preliminary positioning mechanism 2 also includes a driving cylinder 21 arranged at the center of the lower end of the guide frame 13, and the lifting frame 22 is connected to the lifting end of the driving cylinder 21. The four corners of the lower end of the lifting frame 22 are connected with guide rods 23, and the guide rods 23 are movably inserted into the sleeve rod 14. The driving cylinder 21 drives the lifting frame 22 to rise and fall, and the guide rods 23 and the sleeve rods 14 cooperate to perform horizontal calibration on the lifting frame 22.

[0033] An extension groove 221 is provided at the upper and lower corresponding positions of the lifting frame 22 and the guide groove 131, and the two ends of the lifting frame 22 are set as narrow openings 222. The rotating adjustment mechanism 3 can be moved to engage in the extension groove 221 to expand the clamping range. The setting of the narrow opening 222 makes the middle part of the lifting frame 22 as narrow as possible to meet the clamping needs of optical curve molds of different sizes.

[0034] Embodiment 2:

[0035] Combination Figure 4 and Figure 5 The rotation adjustment mechanism 3 also includes a fixing component 32 inserted into the L-shaped frame 31 and the slot 132. The fixing component 32 includes a plug-in rod 321. A thread 322 is provided on the upper end of the plug-in rod 321. A knob 323 is sleeved on the thread 322. The knob 323 can be rotated along the thread 322 to achieve pressurization and relaxation of the L-shaped frame 31 and the guide frame 13, which is convenient for manual adjustment as needed.

[0036] One end of the plug-in component 34 is connected to a turntable short-connection column 341 and a turntable long-connection column 342. The turntable short-connection column 341 and the turntable long-connection column 342 are respectively provided with two groups, which are arranged in a circular array. The two groups of turntable short-connection columns 341 and the two groups of turntable long-connection columns 342 are matched together to realize the extrusion and fixation of the optical curve mold. The contact force of the turntable long-connection column 342 is greater than that of the turntable short-connection column 341. The turntable short-connection column 341 and the turntable long-connection column 342 are made of soft silicone. The different thicknesses not only increase the friction, but also prevent the mold from being squeezed and deformed, so as to meet the pressurization needs of heterogeneous workpieces.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning fixture for optical curve mold processing, comprising a fixture fixing frame (1), characterized in that: The clamp fixing frame (1) is connected to a preliminary positioning mechanism (2) that can be raised and lowered, and two ends of the clamp fixing frame (1) are slidably provided with a rotation adjustment mechanism (3) for rotational clamping; The clamp fixing frame (1) comprises a guide frame (13), and slots (132) are provided on both sides of the guide frame (13). The preliminary positioning mechanism (2) comprises a lifting frame (22) arranged for lifting and lowering. The rotation adjustment mechanism (3) comprises an L-shaped frame (31) arranged for sliding engagement along the slot (132). The rotation adjustment mechanism (3) comprises two groups of mirror-symmetrical groups with respect to the preliminary positioning mechanism (2). One side of the L-shaped frame (31) is connected to a side frame (33), and a plug-in assembly (34) is movably sleeved on the side frame (33), and one end of the plug-in assembly (34) on one group of the rotation adjustment mechanisms (3) is connected to a rotating motor (35).

2. The positioning fixture for optical curve mold processing according to claim 1, characterized in that: The clamp fixing frame (1) further comprises support frames (12) arranged at the four corners of the lower end of the guide frame (13), and the lower end of the support frame (12) is connected to the bottom plate (11).

3. The positioning fixture for optical curve mold processing according to claim 1, characterized in that: Guide grooves (131) are formed on both sides of the guide frame (13).

4. The positioning fixture for optical curve mold processing according to claim 1, characterized in that: The clamp fixing frame (1) also includes four groups of sleeve connecting rods (14) fixedly arranged at the lower end of the guide frame (13), and the preliminary positioning mechanism (2) is movably sleeved in the sleeve connecting rods (14).

5. The positioning fixture for optical curve mold processing according to claim 1, characterized in that: The preliminary positioning mechanism (2) also includes a driving cylinder (21) arranged at the center of the lower end of the guide frame (13), the lifting frame (22) is connected to the lifting end of the driving cylinder (21), and the four corners of the lower end of the lifting frame (22) are connected to guide rods (23), and the guide rods (23) are movably inserted into the sleeve rod (14).

6. The positioning fixture for optical curve mold processing according to claim 3, characterized in that: The lifting frame (22) is provided with extension grooves (221) at upper and lower corresponding positions of the guide groove (131), and both ends of the lifting frame (22) are arranged as narrow openings (222).

7. The positioning fixture for optical curve mold processing according to claim 1, characterized in that: The rotation adjustment mechanism (3) also includes a fixing assembly (32) inserted into the L-shaped frame (31) and the slot (132), the fixing assembly (32) including a plug-in rod (321), a thread (322) being provided at the upper end of the plug-in rod (321), and a knob (323) being sleeved on the thread (322).

8. The positioning fixture for optical curve mold processing according to claim 1, characterized in that: One end of the plug-in assembly (34) is connected to a turntable short-connection column (341) and a turntable long-connection column (342), and two groups of the turntable short-connection column (341) and the turntable long-connection column (342) are respectively arranged in a circular array.

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