A limiting holder for machining camshaft of new energy automobile

Abstract

The application relates to the clamping technical field and discloses a limiting clamp for machining camshafts of new energy vehicles, which comprises a base, a limiting strip for detachable support is fixed to the upper end of the base, triangular limiting blocks are symmetrically fixed to the upper end of the limiting strip, the symmetric triangular limiting blocks are used for supporting the camshafts, a metal plate capable of generating vibration is arranged on the inward face of the triangular limiting blocks, and the metal plate is used for supporting and shaking off the chippings. The camshafts pressed on the metal plate are taken out downwards, the round bars move along the convex strips under the action of the pull ropes and the ejecting force of the metal plate, the ejecting of the metal plate has a sense of hierarchy, the impurities falling on the metal plate are shaken off, the camshafts and the chippings are prevented from being pressed in the subsequent clamping, the camshafts are prevented from being pressed with the chippings by mistake in the operation, and the probability of damage and scratches of the camshafts is reduced.

Description

Technical Field

[0001] The present invention relates to the field of clamping technology, and in particular to a limit clamp for machining camshafts of new energy vehicles. Background Art

[0002] As a special slender shaft component, the axle must have a through hole machined into its axis for the flow of lubricating oil. However, the camshaft cylindrical surface also has a smaller diameter oil outlet hole. During the oil outlet hole machining process, the camshaft needs to be limited and then drilled on its surface.

[0003] In fixing the camshaft, it is conventional to use a meshing clamping method for control, which easily leaves marks on the camshaft surface, thus greatly affecting the accuracy of the camshaft and affecting its service life. At the same time, since the camshaft is in the shape of a long axis, the pressure exerted by drilling causes the surface of the camshaft to bear bending pressure, which further affects the state of the camshaft. Even if there is a support at the lower end, the debris generated by drilling is likely to remain on the support. Careful cleaning is required after each drilling contact to avoid damage caused by the debris squeezing the camshaft. Based on this, a new limit clamp is proposed. Summary of the Invention

[0004] The purpose of the present invention is to provide a limit clamp for processing a camshaft of a new energy vehicle, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a limit clamp for machining a camshaft of a new energy vehicle, comprising a base;

[0006] A detachable support limit strip is fixed to the upper end of the base;

[0007] A triangular limiting block is symmetrically fixed to the upper end of the limiting strip, and the symmetrical triangular limiting block is used to support the camshaft;

[0008] A metal plate capable of generating vibration is provided on the inwardly facing surface of the triangular limit block, and the metal plate is used to support and shake off the debris;

[0009] Two groups of extrusion components are provided at the upper end of the limiting strip. The extrusion components are symmetrically arranged. The extrusion components include pressing blocks for extruding and limiting the camshaft.

[0010] Preferably, two symmetrically arranged L-shaped limit strips are fixed to the upper end of the base, and fitting strips are fixed on both sides of the limit strips. The two fitting strips are fixed to the inner sides of the two L-shaped limit strips by bolts to achieve the fixing effect, and the limit strips can be taken out later.

[0011] Preferably, a circular hole for connecting to a pipe is fixed at one end of the limit strip, and a long air inlet groove is provided inside the limit strip;

[0012] The upper end of the limit strip is integrally formed with a convex metal strip, and a bend is formed inside the convex metal strip, one end of the bend is connected to the air inlet groove, and the other end extends horizontally outward from the outer side of the convex metal strip;

[0013] The bend is used for air intake setting and blows out the gas horizontally, so that the chips dropped on the limiting strip are blown outwards and away from the camshaft.

[0014] Preferably, an arc-shaped opening extending outward is arranged at the upper end of the limit strip, and the end of the arc-shaped opening is connected to the outlet at the level of the bend, which is used to blow out the accumulated debris at the upper end. The arc-shaped opening effectively collects the chips and collects them relatively concentratedly in the arc-shaped opening, and then the concentrated chips are blown out through the blown gas.

[0015] Preferably, a mounting opening is provided on one side of the triangular limit block facing outward, a bolt is inserted into the mounting opening and the triangular limit block is fixed to the limit bar, so that the triangular limit block can be disassembled and controlled according to the shape of the camshaft so that the camshaft can be effectively supported between the triangular limit blocks on both sides, thereby forming a stable effect and achieving a supporting effect;

[0016] Both sides of the triangular limit block are provided with limit sheet metals, and the limit sheet metals on both sides are fixed on the limit strips and limit the triangular limit block;

[0017] The lower end of the inwardly inclined side of the triangular limit block is provided with an inclined surface for blowing the fallen impurities outward along the inclined surface. The wind blown out through the bend blows toward the triangular limit block, which can blow the fallen chips out along the inclined surface, increasing the probability of blowing them out.

[0018] Preferably, a mounting bevel is provided on one inwardly facing side of the triangular limit block, and a metal plate is hinged in the mounting bevel;

[0019] A built-in cavity is provided inside the metal plate, and a plurality of arranged convex strips are fixed on the inner wall at the lower end of the built-in cavity;

[0020] A fixing rod is fixed inside the built-in cavity, a sleeve is sleeved on the outer wall of the fixing rod, a telescopic rod is fixedly connected to the outer wall of the sleeve, the telescopic rod has elasticity extending outward, a round bar is fixed to the end of the telescopic rod, the round bar can be squeezed with the convex bar when it moves, and the round bar moves along the convex bar to generate an extrusion-type movement, thereby causing the metal plate to pop out in layers, and the telescopic rod pushes the round bar to reset it;

[0021] A groove is provided on the back of the metal plate, the groove being connected to the built-in cavity, and a drawstring is passed through the groove, one end of the drawstring is fixedly connected to the round bar, and the drawstring pulls the round bar to ensure that the round bar slides;

[0022] An inwardly extending oblique cavity is provided on the inner wall of the installation oblique opening, and the other end of the pull rope is fixedly connected to the inside of the oblique cavity;

[0023] A return spring is fixed on the inner wall of the inclined cavity, and the end of the return spring is against the metal plate, and the return spring plays a driving role.

[0024] Preferably, the extrusion assembly comprises two supporting sheet metals fixed to the upper end of the limiting bar, and the outer side of the supporting sheet metal is integrally formed with an external block;

[0025] An extrusion block is provided at the upper end of the two supporting sheet metals, and a slide groove is opened at the upper end of the extrusion block. The supporting sheet metal is sleeved in the slide groove and is arranged in a close fit, so that the extrusion block can only move in the up and down directions, and the pressing block at the lower end of the extrusion block is used to squeeze the camshaft;

[0026] The extrusion block is provided with a limiting bolt, which is rotated downward to penetrate the external block to squeeze the extrusion block downward for fixing;

[0027] There are two pressing blocks, both of which are fixed at the lower end of the extrusion block body. The lower end edges of the pressing blocks are rounded to avoid excessive marks on the camshaft.

[0028] Preferably, the lower ends of the two pressing blocks are fixed with symmetrically arranged arc-shaped elastic plates;

[0029] The arc-shaped elastic plate is extended outward, and a rubber sheet is adhered to the inner side of the arc-shaped elastic plate to squeeze the position that needs to be pressed to prevent dust and impurities from being squeezed.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] (1) The present invention fixes the limit bar on the base by setting a triangular limit block and a pressing block. The outer wall of the camshaft is placed on the inner side of the triangular limit block. The pressing block at the lower end of the extrusion block squeezes the upper end of the camshaft. After extrusion, it is threadedly connected to the external block through a limit bolt to achieve the effect of extrusion and limiting the camshaft.

[0032] (2) The present invention provides an arc-shaped elastic plate, and the rubber sheet inside the arc-shaped elastic plate contacts, squeezes and slides with the outer wall of the camshaft to scrape off dust and impurities on the surface of the camshaft, avoiding squeezing of dust and impurities to produce unnecessary traces.

[0033] (3) The present invention sets a layered pop-up for the metal plate, and takes out the cam shaft squeezed on the metal plate downward. Under the action of the pull rope and the pop-up force of the metal plate, the round bar moves along the convex bar. The metal plate pops out with a layered feel, and the impurities dropped on the metal plate are shaken off, thereby avoiding the subsequent clamping of the cam shaft and the squeezing of debris and impurities.

[0034] (4) The present invention provides a gas impact, and the gas is transported to the air inlet groove through the circular hole, blowing the debris outward, avoiding accidental squeezing of the debris and the camshaft during operation, and reducing the probability of damage and scratches to the camshaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 This is a schematic diagram of the base and limit bar structure of the present invention;

[0037] Figure 3 This is a schematic diagram of a half-section structure of a limit strip according to the present invention;

[0038] Figure 4 This is a schematic diagram of the triangular limit block structure of the present invention;

[0039] Figure 5 This is a schematic diagram of a half-section structure of a triangular limit block of the present invention;

[0040] Figure 6 For the present invention Figure 5 A schematic diagram of the partially enlarged structure of the middle part;

[0041] Figure 7 This is a schematic diagram of the structure of the extrusion assembly of the present invention.

[0042] In the figure: 1. Base; 11. L-shaped limit strip; 2. Limit strip; 21. Fitting strip; 22. Air inlet groove; 23. Metal convex strip; 24. Bend; 25. Arc-shaped opening; 3. Triangular limit block; 31. Mounting oblique opening; 32. Metal plate; 321. Built-in cavity; 322. Convex strip; 323. Fixing rod; 324. Sleeve; 325. Telescopic rod; 326. Round bar; 327. Strip groove; 328. Pull rope; 329. Oblique cavity; 320. Reset spring; 33. Inclined surface; 34. Limiting sheet metal; 35. Mounting opening; 4. Extrusion assembly; 41. Support sheet metal; 42. External block; 43. Extrusion block; 44. Slide; 45. Limiting bolt; 46. Pressing block; 47. Arc-shaped elastic plate. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0044] See also Figure 1-7 , the present invention provides a technical solution: a limit clamp for processing a camshaft of a new energy vehicle, comprising a base 1;

[0045] A detachable support limit strip 2 is fixed to the upper end of the base 1;

[0046] A triangular limit block 3 is symmetrically fixed to the upper end of the limit bar 2. The symmetrical triangular limit block 3 is used to support the camshaft;

[0047] A metal plate 32 capable of generating vibration is provided on the inward surface of the triangular limit block 3, and the metal plate 32 is used to support and shake off the debris;

[0048] Two groups of extrusion components 4 are provided at the upper end of the limiting strip 2 . The extrusion components 4 are symmetrically arranged. The extrusion components 4 include a pressing block 46 for extruding and limiting the camshaft.

[0049] Two symmetrically arranged L-shaped limit strips 11 are fixed to the upper end of the base 1, and fitting strips 21 are fixed on both sides of the limit strip 2. The two fitting strips 21 are fixed to the inner sides of the two L-shaped limit strips 11 by bolts to achieve the fixing effect, and the limit strip 2 can be taken out later;

[0050] The limiting strip 2 is fixed on the base 1, and the outer wall of the camshaft is against the inner side of the triangular limiting block 3. The pressing block 46 at the lower end of the extrusion block 43 squeezes the upper end of the camshaft. After extrusion, it is threadedly connected to the external block 42 through the limiting bolt 45 to achieve the effect of extrusion and limiting the camshaft.

[0051] A circular hole for connecting to a pipe is fixed at one end of the limit strip 2, and a long air inlet groove 22 is provided inside the limit strip 2;

[0052] The upper end of the limit strip 2 is integrally formed with a raised metal strip 23, and a bend 24 is formed inside the raised metal strip 23. One end of the bend 24 is connected to the air inlet groove 22, and the other end extends horizontally outward from the outer side of the raised metal strip 23;

[0053] The bend 24 is used for air intake setting and blows out the gas horizontally so that the chips falling on the limiting strip 2 are blown outwards and away from the camshaft.

[0054] An outward-extending arc-shaped opening 25 is arranged at the upper end of the limit strip 2, and the end of the arc-shaped opening 25 is connected to the horizontal outlet of the bend 24, which is used to blow out the accumulated debris at the upper end. The arc-shaped opening 25 effectively collects the chips and collects them relatively concentratedly in the arc-shaped opening 25. The concentrated chips are then blown out through the blown gas to avoid accidentally squeezing the chips with the camshaft during operation, thereby reducing the probability of damage and scratches to the camshaft.

[0055] A mounting opening 35 is provided on one side of the triangular limit block 3 facing outward, and a bolt is inserted into the mounting opening 35 to fix the triangular limit block 3 to the limit bar 2, so that the triangular limit block 3 can be disassembled and controlled according to the shape of the camshaft so that the camshaft can be effectively supported between the triangular limit blocks 3 on both sides, forming a stable effect and achieving a supporting effect;

[0056] Both sides of the triangular limit block 3 are provided with limit sheet metal 34, and the limit sheet metal 34 on both sides is fixed on the limit bar 2 and limits the triangular limit block 3;

[0057] An inclined surface 33 is provided at the lower end of the inwardly inclined side of the triangular limit block 3, which is used to blow the fallen impurities outward along the inclined surface 33. The wind blown out through the bend 24 blows toward the triangular limit block 3, which can blow out the fallen chips along the inclined surface 33, increasing the probability of blowing them out.

[0058] A mounting bevel 31 is provided on one inwardly facing side of the triangular limit block 3, and a metal plate 32 is hinged in the mounting bevel 31;

[0059] The metal plate 32 has an internal cavity 321 formed therein, and a plurality of arranged convex strips 322 are fixed on the inner wall of the lower end of the internal cavity 321;

[0060] A fixed rod 323 is fixed inside the built-in cavity 321. A sleeve 324 is sleeved on the outer wall of the fixed rod 323. A telescopic rod 325 is fixedly connected to the outer wall of the sleeve 324. The telescopic rod 325 has an elastic property of extending outward. A round bar 326 is fixed to the end of the telescopic rod 325. The round bar 326 can be squeezed against the convex bar 322 when it moves. The round bar 326 moves along the convex bar 322 to produce an extrusion-type movement, thereby causing the metal plate 32 to pop out in layers. The telescopic rod 325 pushes the round bar 326 to reset it.

[0061] A groove 327 is formed on the back of the metal plate 32. The groove 327 is connected to the internal cavity 321. A pull rope 328 is passed through the groove 327. One end of the pull rope 328 is fixedly connected to the round bar 326. The pull rope 328 pulls the round bar 326 to ensure that the round bar 326 can slide.

[0062] An inwardly extending oblique cavity 329 is formed on the inner wall of the installation oblique opening 31, and the other end of the pull rope 328 is fixedly connected to the interior of the oblique cavity 329;

[0063] A return spring 320 is fixed on the inner wall of the oblique cavity 329, and the end of the return spring 320 abuts against the metal plate 32, and the return spring 320 plays a driving role;

[0064] The camshaft squeezed on the metal plate 32 is taken out downward, and the round bar 326 moves along the convex bar 322 under the action of the pull rope 328 and the pop-up force of the metal plate 32. The metal plate 32 pops out with a layered feel, which shakes off the impurities dropped on the metal plate 32, avoiding the subsequent clamping of the camshaft and the squeezing of debris and impurities.

[0065] The extrusion assembly 4 includes two supporting sheet metals 41 fixed to the upper end of the limiting bar 2, and an external block 42 is integrally formed on the outer side of the supporting sheet metal 41;

[0066] The upper ends of the two supporting sheet metals 41 are provided with extrusion blocks 43, and the upper ends of the extrusion blocks 43 are provided with slide grooves 44. The supporting sheet metals 41 are sleeved in the slide grooves 44 and are arranged in a close fit, so that the extrusion blocks 43 can only move in the up and down directions, and the pressing blocks 46 at the lower ends of the extrusion blocks 43 squeeze the camshaft;

[0067] A limiting bolt 45 is provided on the extrusion block 43. The limiting bolt 45 rotates downward to penetrate the external block 42 to squeeze the extrusion block 43 downward for fixation.

[0068] There are two pressing blocks 46 , both of which are fixed to the lower end of the extrusion block 43 . The lower end edges of the pressing blocks 46 are rounded to avoid excessive marks on the camshaft.

[0069] The lower ends of the two pressing blocks 46 are fixed with symmetrically arranged arc-shaped elastic plates 47;

[0070] The arc-shaped elastic plate 47 is extended outward, and a rubber sheet is adhered to the inner side of the arc-shaped elastic plate 47 to squeeze the position that needs to be pressed to prevent dust and impurities from being squeezed.

[0071] When in use, the limiting strip 2 is fixed to the base 1, and the camshaft is placed on its upper end, so that the outer wall of the camshaft is against the inner side of the triangular limiting block 3. At the same time, the triangular limiting block 3 is in an extruded state, and the return spring 320 is in an extruded state. Then, the extrusion block 43 is extruded downward, so that the pressing block 46 at the lower end of the extrusion block 43 squeezes the upper end of the camshaft. After extrusion, it is threadedly connected to the external block 42 through the limiting bolt 45 to achieve the effect of extrusion and limiting the camshaft.

[0072] Secondly, before the pressing block 46 contacts the camshaft, the arc-shaped elastic plate 47 at the lower end contacts the camshaft, and the rubber sheet inside the arc-shaped elastic plate 47 contacts and slides with the outer wall of the camshaft, scraping off dust and impurities on the surface of the camshaft during the sliding process. Then, the pressing block 46 contacts the camshaft to avoid squeezing dust and impurities and producing unnecessary marks. After the processing is completed, the arc-shaped elastic plate 47 is directly shaken to shake off the adhering dust and impurities.

[0073] When the metal plate 32 is not under any force, it pops outward under the action of the return spring 320, and at the same time, the pull rope 328 is stretched, causing the round bar 326 to move downward along the built-in cavity 321 and squeeze the telescopic rod 325; and when there is an extruded cam shaft inside the metal plate 32, the return spring 320 is compressed, and the round bar 326 is directly pushed outward under the action of the telescopic rod 325. Therefore, after the cam shaft squeezed on the metal plate 32 is removed downward, the metal plate 32 pops out. Under the action of the pull rope 328 and the ejection force of the metal plate 32, the round bar 326 moves along the convex strips 322 and moves on the wavy convex strips 322, so that the metal plate 32 pops out with a layered feel, and impurities dropped on the metal plate 32 are shaken off, thereby preventing the subsequent clamping of the cam shaft and the squeezing of debris and impurities.

[0074] Secondly, the gas is transported to the air inlet groove 22 through the circular hole, and then blown outward from the bend 24, directly blowing the debris on the limit strip 2 outward. The arc-shaped opening 25 opened at the upper end of the limit strip 2 collects the debris, which is convenient for direct blowing out, avoiding accidental squeezing of the debris with the camshaft during operation, and reducing the probability of damage and scratches to the camshaft.

[0075] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A limit clamp for machining camshafts of new energy vehicles, characterized by: comprising a base (1); A detachable support limit strip (2) is fixed to the upper end of the base (1); A triangular limiting block (3) is symmetrically fixed to the upper end of the limiting strip (2), and the symmetrical triangular limiting block (3) is used to support the camshaft; A metal plate (32) capable of generating vibration is provided on the inward surface of the triangular limit block (3), and the metal plate (32) is used to support and shake off debris; Two groups of extrusion assemblies (4) are provided at the upper end of the limiting strip (2), the extrusion assemblies (4) are symmetrically arranged, and the extrusion assemblies (4) include a pressing block (46) for extruding and limiting the camshaft; The triangular limiting block (3) is provided with a mounting opening (35) on one side facing outward, and a bolt is inserted into the mounting opening (35) to fix the triangular limiting block (3) on the limiting strip (2); Both sides of the triangular limiting block (3) are provided with limiting sheet metals (34), and the limiting sheet metals (34) on both sides are fixed on the limiting strip (2) and limit the triangular limiting block (3); The lower end of the inwardly inclined side of the triangular limiting block (3) is provided with an inclined surface (33) for blowing the fallen impurities outward along the inclined surface (33); A mounting bevel (31) is provided on one side of the triangular limit block (3) facing inward, and a metal plate (32) is hinged in the mounting bevel (31); A built-in cavity (321) is provided inside the metal plate (32), and a plurality of arranged convex strips (322) are fixed on the inner wall of the lower end of the built-in cavity (321); A fixing rod (323) is fixed inside the built-in cavity (321), a sleeve (324) is sleeved on the outer wall of the fixing rod (323), a telescopic rod (325) is fixedly connected to the outer wall of the sleeve (324), the telescopic rod (325) has elasticity extending outward, a round bar (326) is fixed at the end of the telescopic rod (325), and the round bar (326) can be squeezed with the convex bar (322) when it moves; A strip groove (327) is provided on the back of the metal plate (32), the strip groove (327) is communicated with the built-in cavity (321), and a drawstring (328) is passed through the strip groove (327), and one end of the drawstring (328) is fixedly connected to the round bar (326); An inwardly extending oblique cavity (329) is provided on the inner wall of the installation oblique opening (31), and the other end of the pull rope (328) is fixedly connected to the inside of the oblique cavity (329); A return spring (320) is fixed on the inner wall of the oblique cavity (329), and the end of the return spring (320) abuts against the metal plate (32).

2. The limit clamp for machining a camshaft of a new energy vehicle according to claim 1, characterized in that: Two symmetrically arranged L-shaped limit strips (11) are fixed to the upper end of the base (1), and fitting strips (21) are fixed to both sides of the limit strip (2), and the two fitting strips (21) are fixed and clamped on the inner sides of the two L-shaped limit strips (11) by bolts.

3. The limit clamp for machining a camshaft of a new energy vehicle according to claim 1, characterized in that: A circular hole for connecting to a pipe is fixed at one end of the limit strip (2), and a long air inlet groove (22) is provided inside the limit strip (2); The upper end of the limit strip (2) is integrally formed with a convex metal (23), and a bend (24) is provided inside the convex metal (23). One end of the bend (24) is connected to the air inlet groove (22), and the other end extends horizontally outward from the outer side of the convex metal (23); The bend (24) is used for air intake and blows out the gas horizontally.

4. The limit clamp for machining a camshaft of a new energy vehicle according to claim 3, characterized in that: The upper end of the limiting strip (2) is provided with an arc-shaped opening (25) extending outward, and the end of the arc-shaped opening (25) is connected to the horizontal outlet of the bend (24) for blowing out the accumulated debris at the upper end.

5. The limit clamp for machining a camshaft of a new energy vehicle according to claim 1, characterized in that: The extrusion assembly (4) comprises two supporting sheet metals (41) fixed to the upper end of the limiting strip (2), and an external block (42) is integrally formed on the outer side of the supporting sheet metal (41); The upper ends of the two supporting sheet metals (41) are provided with extrusion blocks (43), the upper ends of the extrusion blocks (43) are provided with slide grooves (44), and the supporting sheet metals (41) are sleeved in the slide grooves (44) and are fitted together; A limiting bolt (45) is provided on the extrusion block (43), and the limiting bolt (45) rotates downward to penetrate the external block (42) so as to extrude the extrusion block (43) downward; There are two pressing blocks (46), both of which are fixed at the lower end of the extrusion block (43), and the lower end edges of the pressing blocks (46) are rounded.

6. The limit clamp for machining a camshaft of a new energy vehicle according to claim 5, characterized in that: The lower ends of the two pressing blocks (46) are both fixed with symmetrically arranged arc-shaped elastic plates (47); The arc-shaped elastic plate (47) is extended outward, and a rubber sheet is adhered to the inner side of the arc-shaped elastic plate (47).

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