Cable-stayed pre-pressing clamp

Abstract

The utility model discloses a cable-stayed pre-pressing clamp, which belongs to the technical field of clamps, and comprises a bridge plate, two groups of primary processing mechanisms for primarily processing initial blanks are symmetrically arranged on the bridge plate, secondary processing mechanisms for processing primarily processed blanks are symmetrically arranged on the bridge plate, and the secondary processing mechanisms are positioned on the rear sides of the primary processing mechanisms. By means of the mode, the top of the initial blank is pressed through the pre-pressing mechanism, so that the initial blank and the initial machining positioning assembly are pressed in an aligned mode and cannot move, and the problem that clamping is not in place during manual clamping is avoided; according to the machining method, the primary machining workblank obtained after primary machining is moved to the set machining position of the secondary machining mechanism, then the secondary machining mechanism is used for machining the primary machining workblank, and therefore the secondary machining workblank is obtained, and stable clamping and accurate machining of the primary workblank are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to an obliquely pulled pre-pressing clamp. Background Art

[0002] Special-shaped parts are a special type of workpiece and require special fixtures to clamp them to avoid damage to the workpiece during processing.

[0003] Chinese patent CN218051404U discloses a new type of machining fixture, including a hand-operated knob, a part clamping block, a part bearing platform, a driving worm, and a driven worm wheel. The middle part of the part bearing platform is provided with a worm wheel connecting platform, and the bottom of the part clamping block is provided with a slide connecting column. The diameter of the slide connecting column is the same as the width of the limiting slide. The slide connecting column is connected to the limiting slide, and the slide connecting column slides inside the limiting slide. The bottom of the slide connecting column is provided with a dovetail slider.

[0004] However, the existing device still has the following problems: when clamping special-shaped parts, the existing technology cannot clamp stably, and the angle and position of the parts will change during clamping, which is not conducive to precise processing. Different tools need to be used when processing grooves, surfaces and holes, and the processing efficiency is low.

[0005] Based on this, the utility model designs an oblique-pull pre-tightening clamp to solve the above-mentioned problem. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides an oblique tension pre-compression clamp.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The oblique tension pre-tightening fixture comprises a bridge plate, on which two groups of primary processing mechanisms for primary processing of initial blanks are symmetrically arranged, and on which secondary processing mechanisms for processing the primary processing blanks are symmetrically arranged, and the secondary processing mechanisms are located at the rear side of the primary processing mechanisms;

[0009] The preliminary processing mechanism includes a preliminary processing positioning assembly for positioning the initial blank, an oblique tension and clamping assembly for tightening the initial blank, and a pre-pressing mechanism for automatically limiting and clamping the initial blank. The preliminary processing positioning assembly is fixedly mounted on the top of the bridge plate, the oblique tension and clamping assembly is movably connected to the preliminary processing positioning assembly, and the pre-pressing mechanism is movably connected to the bridge plate.

[0010] A fool-proof component for preventing failure of the pre-tensioning mechanism and the rotating pressure arm is fixedly installed on the top of the bridge plate.

[0011] Furthermore, the preliminary processing positioning assembly includes a preliminary pulling chuck seat and a positioning seat, the preliminary pulling chuck seat is fixedly installed on the top of the bridge plate, the positioning seat is fixedly installed on the top of the preliminary pulling chuck seat, and the initial blank is placed in the positioning seat.

[0012] Furthermore, the oblique tensioning and clamping assembly includes a pull rod, symmetrically arranged guide columns and an oblique tensioning block. The pull rod penetrates and is slidably connected to the bridge plate. The guide column is slidably connected to the initial tensioning chuck seat. An opening is provided on the inner side of the guide column. The outer ends of both sides of the pull rod are clamped in the opening. The oblique tensioning block is fixedly connected to the top end of the guide column. The oblique tensioning block is used to clamp the initial blank.

[0013] Furthermore, the pre-pressing mechanism includes a sleeve, a piston rod, a connecting rod assembly, a pressure arm, a side pressure arm floating block and a pressure groove. The sleeve is located on the top of the bridge plate, the piston rod is fixedly connected to the sleeve, the piston rod penetrates and is slidably connected to the bridge plate, the sleeve is connected to the pressure arm through the connecting rod assembly, the inner end of the pressure arm is fixedly connected to the side pressure arm floating block, the bottom end of the side pressure arm floating block is provided with a pressure groove for pressing the initial blank, and an oil cylinder is fixedly installed at the bottom of the bridge plate, and the output end of the oil cylinder is fixedly connected to the bottom end of the piston rod.

[0014] Furthermore, the secondary processing mechanism includes a secondary processing positioning component and a clamping component. The secondary processing positioning component is fixedly installed on the top rear side of the bridge plate, and the secondary processing positioning component is provided with a clamping component.

[0015] Furthermore, the secondary processing positioning assembly includes a secondary pull chuck seat, a groove positioning seat and a positioning column for positioning and guiding the placement of the initially processed blank. The secondary pull chuck seat is fixedly installed on the top of the bridge plate, the groove positioning seat is fixedly installed on the top of the secondary pull chuck seat, and the positioning column is fixedly installed on the groove positioning seat.

[0016] Furthermore, the clamping assembly includes a pull rod, a guide column, a clamping block and a contact gasket for clamping the pre-processed blank, the pull rod penetrates and is slidably connected to the bridge plate, the guide column is slidably connected to the secondary chuck seat, the top end of the guide column is fixedly connected to the clamping block, and the contact gasket is fixedly connected to the outer end of the clamping block;

[0017] Two groups of oil cylinders are symmetrically and fixedly installed on the bottom surface of the bridge plate, each group has two oil cylinders, and the output ends of the oil cylinders are fixedly connected to the bottom ends of the pull rods.

[0018] Furthermore, the fool-proofing component includes an airtight seat, an airtight rod and an airtight mounting seat. The airtight mounting seat is fixedly mounted on the bridge plate. Airtight seats are installed at the lower and upper ends of the side walls of the airtight mounting seat. The airtight rod is slidably connected to the airtight seat. The airtight rod is used to support the pressing arm and rotate the pressing arm.

[0019] Furthermore, a plurality of rotary cylinders are symmetrically and fixedly mounted on the bridge plate, and a rotary pressing arm for pressing the secondary processed blank is fixedly connected to the output end of the rotary cylinder.

[0020] The utility model has the following technical effects:

[0021] 1. The utility model presses the top of the initial blank through the pre-pressing mechanism, so that the initial blank and the primary processing positioning component are aligned and pressed without movement, avoiding the problem of not being clamped in place during manual clamping, and then after the initial milling cutter processing, the initial processing blank obtained after the initial processing is moved to the set processing position of the secondary processing mechanism, and then the initial processing blank is processed by the secondary processing mechanism to obtain the secondary processing blank, thereby realizing stable clamping and more precise processing of the initial blank. Since a variety of workpieces are clamped, only one milling cutter can be used to complete the milling of grooves, end faces and holes, thereby improving processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 The utility model is a three-dimensional assembly method for the blank of the oblique tension pre-pressing clamp Figure 1 ;

[0024] Figure 2 It is a front view of the blank assembly of the oblique-pull pre-pressing fixture of the utility model;

[0025] Figure 3 It is a three-dimensional diagram of the oblique-pull pre-tightening clamp of the utility model;

[0026] Figure 4 This is an internal structure diagram of the oblique-pull pre-tightening clamp of the utility model;

[0027] Figure 5 It is a partial structural diagram of the pre-compression mechanism;

[0028] Figure 6 The utility model is a three-dimensional assembly method for the blank of the oblique tension pre-pressing clamp Figure 2 .

[0029] The numbers in the figure represent:

[0030] 1. Bridge plate; 2. Initial blank; 21. Initial processing blank; 22. Secondary processing blank; 3. Initial processing mechanism; 31. Initial processing positioning assembly; 311. Initial pull chuck seat; 312. Positioning seat; 32. Oblique tension and clamping assembly; 321. Pull rod; 322. Guide column; 323. Oblique tension block; 33. Pre-tensioning mechanism; 331. Bushing; 332. Piston rod; 333. Connecting rod assembly; 334. Pressure arm; 335. Side Press arm floating block; 336, press groove; 4, secondary processing mechanism; 41, secondary processing positioning assembly; 411, secondary pull chuck seat; 412, groove positioning seat; 413, positioning column; 42, clamping assembly; 321, pull rod; 322, guide column; 421, clamping block; 422, contact gasket; 5, foolproof assembly; 51, airtight seat; 52, airtight rod; 53, airtight mounting seat; 6, rotating cylinder; 61, rotating press arm. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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.

[0032] The utility model is further described below in conjunction with embodiments.

[0033] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0034] Example 1

[0035] Please refer to the instruction manual Figure 1-6 , the inclined pre-tensioning fixture comprises a bridge plate 1;

[0036] Two groups of primary processing mechanisms 3 for primary processing of the initial blank 2 are symmetrically arranged on the bridge plate 1, and secondary processing mechanisms 4 for processing the primary processing blank 21 are symmetrically arranged on the bridge plate 1, and the secondary processing mechanisms 4 are located at the rear side of the primary processing mechanisms 3;

[0037] The preliminary processing mechanism 3 includes a preliminary processing positioning component 31 for positioning the initial blank 2, an oblique tension and clamping component 32 for tightening the initial blank 2, and a pre-pressing mechanism 33 for automatically limiting and clamping the initial blank 2. The preliminary processing positioning component 31 is fixedly installed on the top of the bridge plate 1, the oblique tension and clamping component 32 is movably connected to the preliminary processing positioning component 31, and the pre-pressing mechanism 33 is movably connected to the bridge plate 1;

[0038] A foolproof component 5 is fixedly installed on the top of the bridge plate 1 to prevent the pre-tensioning mechanism 33 and the rotating pressure arm 61 from failing.

[0039] When the utility model is in use, the blank to be processed is first placed on the primary processing positioning component 31, and then the initial blank 2 is tightened by the inclined tensioning and clamping component 32, and then the top of the initial blank 2 is pressed by the pre-pressing mechanism 33, so that the initial blank 2 and the primary processing positioning component 31 are aligned and pressed, avoiding the problem of not being clamped in place during manual clamping, and then after the initial milling cutter processing, the initial processing blank 21 obtained after the initial processing is moved to the set processing position of the secondary processing mechanism 4, and then the initial processing blank 21 is processed by the secondary processing mechanism 4 to obtain the secondary processing blank 22, thereby realizing stable clamping and more precise processing of the initial blank 2, and since a variety of workpieces are clamped, only one milling cutter can be used to complete the milling of grooves, end faces and holes, thereby improving processing efficiency.

[0040] The initial processing positioning assembly 31 includes an initial pull chuck seat 311 and a positioning seat 312. The initial pull chuck seat 311 is fixedly installed on the top of the bridge plate 1, and the positioning seat 312 is fixedly installed on the top of the initial pull chuck seat 311. The initial blank 2 is placed in the positioning seat 312;

[0041] A groove is provided inside the initial pull chuck seat 311, and the pull rod 321 and the guide post 322 slide in the groove;

[0042] The oblique tensioning and clamping assembly 32 includes a pull rod 321, a symmetrically arranged guide column 322 and an oblique tensioning block 323. The oblique tensioning block 323 is used to clamp the special-shaped part. The pull rod 321 penetrates and is slidably connected to the bridge plate 1. The guide column 322 is slidably connected to the initial pull chuck seat 311. An opening is provided on the inner side of the guide column 322. The outer ends of both sides of the pull rod 321 are clamped with the opening. The oblique tensioning block 323 is fixedly connected to the top of the guide column 322. The oblique tensioning block 323 is used to clamp the initial blank 2.

[0043] When the initial blank 2 is placed on the positioning seat 312, the oil cylinder drives the pull rod 321 to descend, and the outer end of the pull rod 321 pulls the opening of the guide column 322 to drive the guide column 322 to descend, and the guide column 322 pulls the inclined pull block 323 to tilt downward, and the inclined pull block 323 clamps the side of the initial blank 2, thereby realizing the rapid clamping of the special-shaped part;

[0044] The pre-pressing mechanism 33 includes a sleeve plate 331, a piston rod 332, a connecting rod assembly 333, a pressure arm 334, a side pressure arm floating block 335 and a pressure groove 336. The sleeve plate 331 is located at the top of the bridge plate 1. The piston rod 332 is fixedly connected to the sleeve plate 331. The piston rod 332 penetrates and is slidably connected to the bridge plate 1. The sleeve plate 331 is connected to the pressure arm 334 through the connecting rod assembly 333. The inner end of the pressure arm 334 is fixedly connected to the side pressure arm floating block 335. The bottom end of the side pressure arm floating block 335 is provided with a pressure groove 336 for pressing the initial blank 2. An oil cylinder is fixedly installed at the bottom of the bridge plate 1, and the output end of the oil cylinder is fixedly connected to the bottom end of the piston rod 332.

[0045] The connecting rod assembly 333 is of the prior art and is composed of three groups of connecting rods. The two ends of the first group of connecting rods are respectively rotatably connected to the pressure arm 334 and the front side of the sleeve plate 331, the two ends of the second group of connecting rods are respectively rotatably connected to the pressure arm 334 and the rear side of the sleeve plate 331, and the two ends of the third group of connecting rods are respectively rotatably connected to the side of the first group of connecting rods and the side of the sleeve plate 331.

[0046] When the initial blank 2 is placed on the positioning seat 312 and clamped, the piston rod 332 is driven to rise and fall by the oil cylinder, and the piston rod 332 rises to drive the connecting rod to rise, and the connecting rod drives the pressure arm 334 to rise and move toward the positioning seat 312, and then the side pressure arm floating block 335 presses the outer edge of the initial blank 2 to achieve the pressing and fixing of the initial blank 2, and at the same time, it can avoid the initial blank 2 being not in the standard position when manually clamped, thereby improving the accuracy of clamping and processing;

[0047] The secondary processing mechanism 4 includes a secondary processing positioning component 41 and a clamping component 42. The secondary processing positioning component 41 is fixedly installed on the top rear side of the bridge plate 1, and the clamping component 42 is arranged on the secondary processing positioning component 41.

[0048] The secondary processing positioning assembly 41 includes a secondary pull chuck seat 411, a groove positioning seat 412 and a positioning column 413 for positioning and guiding the placement of the pre-processed blank 21. The secondary pull chuck seat 411 is fixedly installed on the top of the bridge plate 1, the groove positioning seat 412 is fixedly installed on the top of the secondary pull chuck seat 411, and the positioning column 413 is fixedly installed on the groove positioning seat 412;

[0049] The clamping assembly 42 includes a pull rod 321, a guide column 322, a clamping block 421 and a contact gasket 422 for clamping the pre-processed blank 21. The pull rod 321 penetrates and is slidably connected to the bridge plate 1, the guide column 322 is slidably connected to the secondary chuck seat 411, the top end of the guide column 322 is fixedly connected to the clamping block 421, and the contact gasket 422 is fixedly connected to the outer end of the clamping block 421;

[0050] Two groups of oil cylinders are symmetrically fixedly installed on the bottom surface of the bridge plate 1, each group of oil cylinders has two oil cylinders, and the output end of the oil cylinder is fixedly connected to the bottom end of the pull rod 321;

[0051] When the processed end of the primary processing blank 21 is placed on the groove positioning seat 412, the positioning column 413 is aligned with the positioning hole of the primary processing blank 21 for positioning, and then the primary processing blank 21 is inserted into the groove positioning seat 412, and the pull rod 321 moves downward to drive the guide column 322 to move downward, and then the guide column 322 drives the clamping block 421 to move downward inward, and finally the contact gasket 422 contacts and clamps the outer wall of the primary processing blank 21, so as to achieve fast and accurate fixation, and then the primary processing blank 21 is processed by the milling cutter to obtain the secondary processing blank 22, and the milling cutter processing process is completed;

[0052] The fool-proof component 5 includes an airtight seat 51, an airtight rod 52 and an airtight mounting seat 53. The airtight mounting seat 53 is fixedly mounted on the bridge plate 1. The airtight seats 51 are mounted on the lower and upper ends of the side walls of the airtight mounting seat 53. The airtight rod 52 is slidably connected to the airtight seat 51. The airtight rod 52 is used to support the pressing arm 334 and the rotating pressing arm 61.

[0053] The gas-tight rod 52 at the lower end of the side wall of the gas-tight mounting seat 53 is extended by gas driving, so that the gas-tight rod 52 is pressed against the bottom surface of the pressing arm 334, so that the side pressing arm floating block 335 can stably press the initial blank 2, avoiding failure of the side pressing arm floating block 335;

[0054] A plurality of rotary cylinders 6 are symmetrically fixedly mounted on the bridge plate 1, and a rotary pressing arm 61 for pressing the secondary processed blank 22 is fixedly connected to the output end of the rotary cylinder 6;

[0055] When processing the secondary processing blank 22, the rotating cylinder 6 drives the rotating pressing arm 61 to move to the set position. At this time, the bottom surface of the rotating pressing arm 61 contacts and presses the top outer edge of the secondary processing blank 22, thereby fixing the secondary processing blank 22. When the rotating pressing arm 61 is reset, the airtight seat 51 at the upper end of the side wall of the airtight mounting seat 53 drives the airtight rod 52 to be ejected, and the airtight rod 52 contacts and supports the outer wall of the rotating pressing arm 61 to prevent the rotating pressing arm 61 from rotating excessively and causing the fixture to fail.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A diagonal pre-tensioning fixture, comprising a bridge plate (1), characterized in that: Two groups of primary processing mechanisms (3) for initially processing the initial blank (2) are symmetrically arranged on the bridge plate (1), and secondary processing mechanisms (4) for processing the primary processing blank (21) are symmetrically arranged on the bridge plate (1), and the secondary processing mechanisms (4) are located at the rear side of the primary processing mechanisms (3); The preliminary processing mechanism (3) comprises a preliminary processing positioning component (31) for positioning the initial blank (2), an oblique tensioning and clamping component (32) for tightening the initial blank (2), and a pre-pressing mechanism (33) for automatically limiting and clamping the initial blank (2); the preliminary processing positioning component (31) is fixedly mounted on the top of the bridge plate (1), the oblique tensioning and clamping component (32) is movably connected to the preliminary processing positioning component (31), and the pre-pressing mechanism (33) is movably connected to the bridge plate (1); A foolproof component (5) is fixedly installed on the top of the bridge plate (1) for preventing the pre-pressing mechanism (33) and the rotating pressing arm (61) from failing.

2. The oblique tension pre-compression fixture according to claim 1, characterized in that: The initial processing positioning assembly (31) comprises an initial pulling chuck seat (311) and a positioning seat (312), wherein the initial pulling chuck seat (311) is fixedly mounted on the top of the bridge plate (1), and the positioning seat (312) is fixedly mounted on the top of the initial pulling chuck seat (311), and the initial blank (2) is placed in the positioning seat (312).

3. The oblique tension pre-compression fixture according to claim 2, characterized in that: The oblique tensioning and clamping assembly (32) comprises a pull rod (321), a symmetrically arranged guide column (322) and an oblique tensioning block (323); the pull rod (321) penetrates and is slidably connected to the bridge plate (1); the guide column (322) is slidably connected to the initial tensioning chuck seat (311); an opening is provided on the inner side of the guide column (322); the outer ends of both sides of the pull rod (321) are clamped with the opening; the oblique tensioning block (323) is fixedly connected to the top end of the guide column (322); and the oblique tensioning block (323) is used to clamp the initial blank (2).

4. The oblique tension pre-compression fixture according to claim 3, characterized in that: The pre-pressing mechanism (33) comprises a sleeve plate (331), a piston rod (332), a connecting rod assembly (333), a pressure arm (334), a side pressure arm floating block (335) and a pressure groove (336); the sleeve plate (331) is located at the top of the bridge plate (1); the piston rod (332) is fixedly connected to the sleeve plate (331); the piston rod (332) penetrates and is slidably connected to the bridge plate (1); the sleeve plate (331) is connected to the pressure arm (334) through the connecting rod assembly (333); the inner end of the pressure arm (334) is fixedly connected to the side pressure arm floating block (335); the bottom end of the side pressure arm floating block (335) is provided with a pressure groove (336) for pressing the initial blank (2); an oil cylinder is fixedly installed at the bottom of the bridge plate (1); the output end of the oil cylinder is fixedly connected to the bottom end of the piston rod (332).

5. The oblique tension pre-compression fixture according to claim 4, characterized in that: The secondary processing mechanism (4) comprises a secondary processing positioning component (41) and a clamping component (42); the secondary processing positioning component (41) is fixedly mounted on the top rear side of the bridge plate (1); and the clamping component (42) is arranged on the secondary processing positioning component (41).

6. The oblique tension pre-compression fixture according to claim 5, characterized in that: The secondary processing positioning assembly (41) comprises a secondary chuck seat (411), a groove positioning seat (412) and a positioning column (413) for positioning and guiding the placement of the primary processing blank (21); the secondary chuck seat (411) is fixedly mounted on the top of the bridge plate (1); the groove positioning seat (412) is fixedly mounted on the top of the secondary chuck seat (411); and the positioning column (413) is fixedly mounted on the groove positioning seat (412).

7. The oblique tension pre-compression fixture according to claim 6, characterized in that: The clamping assembly (42) comprises a pull rod (321), a guide column (322), a clamping block (421) and a contact gasket (422) for clamping the pre-processed blank (21); the pull rod (321) penetrates and is slidably connected to the bridge plate (1); the guide column (322) is slidably connected to the secondary chuck seat (411); the top end of the guide column (322) is fixedly connected to the clamping block (421); and the contact gasket (422) is fixedly connected to the outer end of the clamping block (421); Two groups of oil cylinders are symmetrically fixedly installed on the bottom surface of the bridge plate (1), with each group having two oil cylinders, and the output ends of the oil cylinders are fixedly connected to the bottom ends of the pull rods (321).

8. The oblique tension pre-compression fixture according to claim 7, characterized in that: The foolproof assembly (5) comprises an airtight seat (51), an airtight rod (52) and an airtight mounting seat (53); the airtight mounting seat (53) is fixedly mounted on the bridge plate (1); the airtight seat (51) is mounted on the lower end and the upper end of the side wall of the airtight mounting seat (53); the airtight rod (52) is slidably connected to the airtight seat (51); and the airtight rod (52) is used to support the pressure arm (334) and the rotating pressure arm (61).

9. The oblique tension pre-compression fixture according to claim 8, characterized in that: A plurality of rotary cylinders (6) are symmetrically fixedly mounted on the bridge plate (1), and a rotary pressing arm (61) for pressing the secondary processed blank (22) is fixedly connected to the output end of the rotary cylinder (6).

Images