CN112847183B - Machining clamp and machining equipment - Google Patents

Abstract

The invention provides a machining clamp and machining equipment, and relates to the technical field of machining. The processing clamp comprises a base, a clamping structure and a clamping structure; the clamping structure comprises two positioning mechanisms, the two positioning mechanisms are distributed along the symmetrical center line of the base in the length direction, and the two positioning mechanisms are used for positioning the guide arm, so that the symmetrical center line of the guide arm is superposed with the symmetrical center line of the base in the length direction; the two positioning mechanisms comprise driving components and two clamping blocks, the two clamping blocks are arranged on the driving components and symmetrically arranged relative to a symmetrical center line in the length direction of the base, and the first driving part drives the two clamping blocks to get close to or get away from each other; the clamping structure is arranged on the base and used for clamping the positioned guide arm. The machining clamp provided by the invention can realize simultaneous machining of two side surfaces of the guide arm through one-time clamping and positioning, and has the advantages of less machining error and high production efficiency.

Description

Machining clamp and machining equipment

Technical Field

The invention relates to the technical field of machining, in particular to a machining clamp and machining equipment.

Background

The guide arm is generally applied to an installation suspension of an automobile and is in a Z shape structurally, a rolling lug is arranged at one end of the guide arm, a cross arm section is arranged at one section connected with the rolling lug, and two opposite side faces of the cross arm section need to be processed into flat faces so as to be convenient to assemble and use.

In the prior art, a guide arm is bent into a zigzag shape by a steel bar, wherein margins to be processed are reserved on two side surfaces of a transverse arm section, when processing is carried out, one side surface of the transverse arm section needs to be processed firstly, and then the other side surface is processed by taking the side surface as a reference surface. Therefore, the guide arm needs to be processed twice, and then needs to be clamped and positioned for multiple times, so that the processing error is large, the labor intensity is high, and the production efficiency is low.

Disclosure of Invention

For overcoming the not enough among the prior art, this application provides a add clamping apparatus and processing equipment for solve among the prior art, during the guide arm adds man-hour, need carry out clamping and location many times, lead to the technical problem that the error of processing is big, intensity of labour is big, production efficiency is low.

In order to achieve the above object, in a first aspect, the present application provides a machining fixture for machining a guide arm, where the machining fixture includes a base, a clamping structure, and a clamping structure;

the clamping structure comprises two positioning mechanisms, the two positioning mechanisms are distributed along the symmetrical center line of the base in the length direction, and the two positioning mechanisms are used for positioning the guide arm, so that the symmetrical center line of the guide arm is superposed with the symmetrical center line of the base in the length direction;

the positioning mechanism comprises a driving assembly and two clamping blocks, the two clamping blocks are arranged on the driving assembly and symmetrically arranged relative to a symmetrical center line of the base in the length direction, and the driving assembly drives the two clamping blocks to approach or separate from each other;

the clamping structure is arranged on the base and used for clamping the positioned guide arm.

With reference to the first aspect, in one possible implementation, the driving assembly includes a transmission shaft and a first driving member;

external threads with opposite rotation directions are arranged at two ends of the transmission shaft, and internal threads matched with the external threads are arranged on the two clamping blocks;

the first driving piece is matched with the transmission shaft through gear transmission or worm and gear transmission, and the first driving piece is used for driving the transmission shaft to rotate.

With reference to the first aspect, in a possible implementation manner, the driving assembly includes two transmission shafts and a first driving member, the two transmission shafts are arranged in a mirror image manner, and external threads with opposite turning directions are arranged at ends of the two transmission shafts close to each other, and the clamping blocks are respectively arranged at ends of the two transmission shafts far away from each other;

the first driving piece is in threaded fit with the two transmission shafts through the transmission nuts, and the first driving piece is used for driving the two transmission shafts to be close to or far away from each other.

With reference to the first aspect, in a possible implementation manner, the clamping structure further includes a second driving member, the second driving member is disposed on the base, one of the positioning mechanisms is disposed on the second driving member, and the second driving member is configured to drive the positioning mechanism to move closer to or away from the other positioning mechanism.

With reference to the first aspect, in a possible implementation manner, the machining fixture further includes a positioning boss, the positioning boss is disposed on the base and located between the two positioning mechanisms, wherein a width of the positioning boss is smaller than a width of the guide arm.

With reference to the first aspect, in a possible implementation manner, the machining fixture further includes a clamping structure, the clamping structure is disposed on the base, and the clamping structure and the two positioning mechanisms are located on a same straight line, and the clamping structure is configured to position the eye of the guide arm;

the clamping structure comprises a hinge seat, a pressing arm and a third driving piece, the hinge seat is connected with the base, the pressing arm is hinged to the hinge seat, the third driving piece is connected with one end, far away from the positioning mechanism, of the pressing arm, and the third driving piece is used for driving the pressing arm to rotate around the hinge.

With reference to the first aspect, in a possible implementation manner, the clamping structure further includes a wedge-shaped cushion block, the wedge-shaped cushion block is movably disposed on the base, the wedge-shaped cushion block is located on one side of the hinge base, which faces the positioning mechanism, and the wedge-shaped cushion block is used for abutting against and matching with the rolling lug.

With reference to the first aspect, in a possible implementation manner, the clamping structure includes an Jiong-shaped frame, a fourth driving member, and a pressing block, where the Jiong-shaped frame is disposed across a symmetric center line in a length direction of the base, and the Jiong-shaped frame and the symmetric center line in the length direction of the base form a predetermined included angle, the fourth driving member is disposed on the Jiong-shaped frame, the pressing block is disposed on the fourth driving member, and the fourth driving member is configured to drive the pressing block to reciprocate along a direction perpendicular to the base.

With reference to the first aspect, in a possible implementation manner, the Jiong-shaped frame includes two supporting beams and a cross beam connecting the two supporting beams, where the two supporting beams are respectively disposed on two sides of a center line of symmetry of the base along the length direction, the two supporting beams are respectively close to the two positioning mechanisms, one end of the cross beam is rotatably engaged with one of the supporting beams, and the other end of the cross beam is engaged with the other supporting beam.

In a second aspect, the present application further provides a processing apparatus, comprising a milling machine and the processing fixture provided above;

the milling machine comprises a processing table board and two processing tool holders, and the two processing tool holders are symmetrically arranged relative to a processing center line of the processing table board;

the processing fixture is arranged on a processing table board of the milling machine, and the symmetrical center line of the base in the length direction coincides with the processing center line of the processing table board.

Compared with the prior art, the beneficial effects of the application are that:

according to the processing clamp and the processing equipment, the processing clamp is applied to processing of the guide arm and comprises a base, a clamping structure and a clamping structure; the clamping structure comprises two positioning mechanisms, the two positioning mechanisms are distributed along the symmetrical center line of the base in the length direction, and the two positioning mechanisms are used for positioning the guide arm, so that the symmetrical center line of the guide arm is superposed with the symmetrical center line of the base in the length direction; the two positioning mechanisms respectively comprise a driving assembly and two clamping blocks, the two clamping blocks are arranged on the driving assembly and symmetrically arranged relative to a symmetrical center line of the base in the length direction, and the first driving piece drives the two clamping blocks to be close to or far away from each other; the clamping structure is arranged on the base and used for clamping the positioned guide arm. The application provides a machining clamp, when using, place the guiding arm on machining clamp, two clamp splices in every positioning mechanism are close to the centre gripping guiding arm each other, mutually support through two positioning mechanism, utilize the principle of two points to confirm a straight line, make the symmetrical center line of guiding arm and the coincidence of base length direction's symmetrical center line, in order to realize the location to the guiding arm, press from both sides tight structure after that and press from both sides the guiding arm clamp tightly fixed, and then through a clamping and location, can realize that the both sides face of guiding arm is processed simultaneously, reduce machining error, labor intensity is reduced, and production efficiency is improved.

In addition, when machining is carried out in machining equipment, the symmetrical center line of the length direction of the base of the machining clamp coincides with the machining center line of the machining table top of the milling machine, and then the symmetrical center line of the guide arm coincides with the machining center line of the machining table top, so that machining allowances on two side faces of the guide arm are consistent, and machining precision is further improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram illustrating a guide arm according to an embodiment of the present disclosure;

FIG. 2 is a front view of a machining fixture in one state provided by an embodiment of the present application;

FIG. 3 is a front view of another state of a machining fixture according to an embodiment of the present disclosure;

FIG. 4 shows a top view of the machining fixture provided in FIG. 2;

FIG. 5 shows a left side view of the machining fixture provided in FIG. 2;

FIG. 6 is an enlarged partial schematic view of FIG. 5 at A;

FIG. 7 is a schematic view of another enlarged partial structure at A in FIG. 5;

fig. 8 shows a schematic structural view of a beam of an Jiong-shaped frame in a machining fixture provided by an embodiment of the application.

Description of the main element symbols:

100-a guide arm; 110-short cross arm; 120-vertical arm section; 130-long cross arm section; 131-a machining area; 140-rolling ears;

200-processing a clamp; 210-a base; 211-mounting holes; 220-clamping structure; 221-a positioning mechanism; 2210-a drive assembly; 2210 a-a first driving member; 2210 b-a drive shaft; 2210 c-a guide shaft; 2210 d-drive seat; 2210 e-external threads; 2211-clamp block; 221 a-a first positioning mechanism; 221 b-a second positioning mechanism; 222-a second drive member; 223-a sliding rail block assembly; 230-a clamping structure; 231-Jiong shaped racks; 2310-supporting beam; 2311-a cross beam; 2311 a-axle hole; 2311 b-a U-shaped bayonet; 232-a fourth drive; 233-a compression block; 240-positioning boss; 250-a clamping structure; 251-a hinged seat; 252-press arm; 253-a third drive member; 254-wedge shaped spacer block.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Example one

Referring to fig. 1 and 2, a processing fixture 200 of the present embodiment may be applied to processing a guide arm 100, and processing two side surfaces of the guide arm 100 may be implemented by one-time clamping and positioning, so as to reduce processing errors, reduce labor intensity, and improve production efficiency.

In this embodiment, a guide arm 100 to be processed is also provided, the guide arm 100 is applied to a mounting suspension of an automobile, the guide arm 100 is a rectangular long piece, after bending processing, the guide arm 100 is zigzag-shaped, and a symmetrical center line of the guide arm 100 is located in a length direction of the guide arm 100.

The guide arm 100 comprises three structures which are connected in sequence along the length direction, wherein the three structures comprise a short cross arm 110 section, a vertical arm section 120 and a long cross arm section 130 in sequence, and one end, far away from the short cross arm 110 section, of the long cross arm section 130 is provided with a lug 140. Wherein, two opposite side surfaces of the long cross arm section 130 need to be processed into flat surfaces according to the assembly requirement. Therefore, in the present embodiment, a region where the long arm section 130 needs to be machined is defined as a machining region 131.

In order to process both sides of the long horizontal arm section 130 of the guide arm 100, the present embodiment provides a processing fixture 200, and the processing fixture 200 includes a base 210, a clamping structure 220, and a clamping structure 230.

Referring to fig. 2 and 3, the base 210 is square, and the base 210 has a symmetrical structure, and the center line of the symmetry is located in the length direction of the base 210. The base 210 is provided with a predetermined number of mounting holes 211, optionally, the predetermined number of mounting holes 211 are uniformly distributed along the periphery of the base 210, and the mounting holes 211 allow bolts or screws to pass through for fixing the base 210, thereby realizing the mounting and fixing of the whole processing fixture 200.

The clamping structure 220 includes two positioning mechanisms 221, as shown in fig. 3, the two positioning mechanisms 221 are distributed along a symmetrical center line of the length direction of the base 210, that is, the two positioning mechanisms 221 are located on a straight line. The two positioning mechanisms 221 are used to position the guide arm 100 so that the center line of symmetry of the guide arm 100 coincides with the center line of symmetry of the base 210 in the longitudinal direction.

In the present embodiment, the two positioning mechanisms 221 are used for clamping and positioning the long boom section 130 of the guide arm 100, and it can be understood that when the two positioning mechanisms 221 clamp the long boom section 130, the two positioning mechanisms should avoid the processing areas 131 on both sides of the long boom section 130.

Referring to fig. 2, fig. 4 and fig. 5, in detail, each of the two positioning mechanisms 221 includes a driving assembly 2210 and two clamping blocks 2211, the two clamping blocks 2211 are disposed on the driving assembly 2210, the two clamping blocks 2211 are symmetrically disposed about a central line of symmetry in the length direction of the base 210, and the driving assembly 2210 drives the two clamping blocks 2211 to approach or depart from each other. That is, when the guide arm 100 is clamped, the long transverse arm section 130 of the guide arm 100 is located between the two clamping blocks 2211, and at this time, the actions of the two clamping blocks 2211 are synchronized, and the two clamping blocks 2211 respectively abut against two side surfaces of the long transverse arm section 130, so as to ensure that the symmetric center line of the guide arm 100 coincides with the symmetric center line of the base 210 in the length direction.

Referring to fig. 2 and fig. 3, the clamping structure 230 is disposed on the base 210, and the clamping structure 230 is used for clamping the positioned guide arm 100, wherein the clamping structure 230 can output a reciprocating motion along a linear direction, and a moving direction of the clamping structure is perpendicular to the base 210. Furthermore, by means of the clamping force of the clamping structure 230 on the guide arm 100 and the positioning and clamping of the clamping blocks 2211 in the two positioning mechanisms 221 on the guide arm 100, the degree of freedom of the guide arm 100 is 0, and the guide arm 100 is prevented from deviating from an initial positioning point during processing, so that the symmetrical center line of the guide arm 100 and the symmetrical center line of the base 210 in the length direction are always kept coincident, the processing error is reduced, and the processing precision is improved.

In the present embodiment, when the guide arm 100 is clamped, the clamping structure 230 outputs a movement of approaching the base 210, and the clamping structure 230 is abutted against and matched with the upper surface of the long horizontal arm section 130 of the guide arm 100, so as to clamp the guide arm 100. It will be appreciated that the clamp structure 230 should clear the machining area 131 on both sides of the long beam segment 130 to avoid interference during machining of both sides.

In the machining fixture 200 provided by this embodiment, when in use, the guide arm 100 is placed on the machining fixture 200, the two clamping blocks 2211 in each positioning mechanism 221 are close to each other to clamp the long transverse arm section 130 of the guide arm 100, and by the mutual cooperation of the two positioning mechanisms 221, a straight line is determined by using two points, so that the symmetric center line of the guide arm 100 coincides with the symmetric center line in the length direction of the base 210, thereby completing the positioning of the guide arm 100, and then the clamping structure 230 clamps and fixes the guide arm 100, because the symmetric center line of the guide arm 100 coincides with the symmetric center line in the length direction of the base 210, after clamping, the machining allowances of the two side surfaces of the long transverse arm section 130 of the guide arm 100 are kept consistent, therefore, the machining fixture 200 can machine the two side surfaces of the guide arm 100 at the same time by only one-time clamping and positioning, thereby reducing the machining error and reducing the labor intensity, the production efficiency is improved.

Example two

Referring to fig. 1 to 5, the processing fixture 200 of the present embodiment can be applied to processing the guide arm 100, and can process two side surfaces of the guide arm 100 by one-time clamping and positioning, thereby reducing processing errors, reducing labor intensity, and improving production efficiency. The present embodiment is an improvement on the technology of the first embodiment, and compared with the first embodiment, the difference is that:

referring to fig. 5 and fig. 6, in the present embodiment, for convenience of description, one of the two positioning mechanisms 221 is described, and the driving assembly 2210 of the positioning mechanism 221 includes a transmission shaft 2210b, a driving seat 2210d, and a first driving member 2210 a.

Wherein, the transmission shaft 2210b is rotatably disposed on the driving seat 2210d, two ends of the transmission shaft 2210b respectively extend to two ends of the driving seat 2210d, and two ends of the transmission shaft 2210b are disposed with external threads 2210e having opposite rotation directions. Both clamp blocks 2211 are provided with internal threads that mate with external threads 2210 e. That is, when the transmission shaft 2210b rotates, the two clamp blocks 2211 move synchronously, and the moving directions of the two clamp blocks 2211 can be close to each other or far away from each other.

The first driving member 2210a is also disposed on the driving seat 2210d, the first driving member 2210a is in transmission fit with the transmission shaft 2210b, and the first driving member 2210a drives the transmission shaft 2210b to rotate, so as to drive the two clamping blocks 2211 to synchronously move.

Further, in order to ensure that the two clamp blocks 2211 do not rotate during operation, in this embodiment, the driving seat 2210d is further provided with a guide shaft 2210c, the guide shaft 2210c and the transmission shaft 2210b are arranged in parallel, two ends of the guide shaft 2210c extend outward from the driving seat 2210d, and two ends of the guide shaft 2210c respectively penetrate through the two clamp blocks 2211, that is, the two clamp blocks 2211 can slide relative to the guide shaft 2210c, so that the rotation of the two clamp blocks 2211 is limited under the cooperation of the guide shaft 2210c and the transmission shaft 2210 b.

In some embodiments, the first drive 2210a is geared with the drive shaft 2210 b. That is, a first gear is disposed on the transmission shaft 2210b, and a second gear is disposed on the first driving member 2210a, and the first gear and the second gear are in mesh transmission, wherein the first driving member 2210a outputs a rotational motion to drive the transmission shaft 2210b to rotate.

Alternatively, the first and second gears may be spur, helical or bevel gears. Further, the first driving member 2210a may be selected from a motor, a rotary cylinder, or a rotary cylinder.

In other embodiments, the first drive 2210a is in worm-drive engagement with the drive shaft 2210 b. That is, a worm gear is disposed on the transmission shaft 2210b, and a worm gear is disposed on the first driver 2210a, and the worm gear are in mesh transmission, wherein the first driver 2210a outputs a rotational motion to drive the transmission shaft 2210b to rotate. Similarly, the first driving member 2210a may be selected from a motor, a rotary cylinder, or a rotary cylinder.

Of course, the first driving element 2210a and the transmission shaft 2210b may also be in chain or belt transmission engagement.

In other embodiments, the first driving member 2210a and the transmission shaft 2210b can also be in transmission engagement through a rack and pinion. Wherein, a third gear is arranged on the transmission shaft 2210b, a rack is also arranged on the first driving part 2210a, the third gear and the rack are in meshing transmission, and the first driving part 2210a can output reciprocating motion along the linear direction. Optionally, the first driving member 2210a includes an oil cylinder, an air cylinder, a linear motor or an electric push rod.

EXAMPLE III

Referring to fig. 1 to 5, a processing fixture 200 of the present embodiment can be applied to process a guide arm 100. The present embodiment is an improvement on the technology of the second embodiment, and compared with the second embodiment, the difference is that:

referring to fig. 5 and fig. 7, in the present embodiment, the driving assembly 2210 includes two transmission shafts 2210b, a driving seat 2210d, and a first driving member 2210a, the two transmission shafts 2210b are slidably disposed on the driving seat 2210d, and the two transmission shafts 2210b are disposed in a mirror image with each other. Wherein, the one end that two transmission shafts 2210b are close to each other is provided with the external screw thread of opposite direction of rotation, and the one end that two transmission shafts 2210b are far away from each other is provided with clamp 2211 respectively.

To prevent the transmission shaft 2210b from rotating the clamp block 2211, in this embodiment, a guide shaft 2210c is also provided, and the guide shaft 2210c is slidably engaged with the driving seat 2210 d.

The first driving member 2210a is threadedly engaged with the two transmission shafts 2210b through transmission nuts (not shown), and the first driving member 2210a is used for driving the two transmission shafts 2210b to move toward or away from each other, in other words, the two transmission shafts 2210b extend and contract relative to the driving seat 2210d, thereby driving the clamping blocks 2211 to move toward or away from each other.

In the second embodiment, a scheme for driving the transmission shaft 2210b by the first driving member 2210a can be referred to in the first embodiment.

Example four

Referring to fig. 1 to 5, a processing fixture 200 of the present embodiment can be applied to process a guide arm 100. The present embodiment is an improvement made on the basis of the technology of any one of the first to third embodiments, and compared with any one of the above embodiments, the difference is that:

in this example, in order to position the guide arm 100 more accurately, at least one positioning mechanism 221 is located in the machining region 131 of the long arm section 130 of the guide arm 100, and in order to ensure that the positioning mechanism 221 does not interfere with machining during machining, the positioning mechanism 221 should be moved to a position outside the machining region 131 during machining.

Referring to fig. 2 and fig. 3, in the present embodiment, the two positioning mechanisms 221 are a first positioning mechanism 221a and a second positioning mechanism 221b, respectively, wherein the first positioning mechanism 221a is disposed near the vertical arm section 120, the second positioning mechanism 221b is disposed near the rolling lug 140, and the first positioning mechanism 221a is disposed in the processing area 131 of the long horizontal arm section 130 of the guide arm 100.

In this example, the clamping structure 220 further includes a second driving member 222, the second driving member 222 is disposed on the base 210, wherein the first positioning mechanism 221a is disposed on the second driving member 222, and the second driving member 222 is configured to drive the first positioning mechanism 221a to approach or depart from the second positioning mechanism 221b, as shown in fig. 3, so as to move the first positioning mechanism 221a to a position outside the processing area 131.

Referring to fig. 2 and fig. 4, in some embodiments, in order to ensure the stability of the first positioning mechanism 221a during moving, the first positioning mechanism 221a is slidably engaged with the base 210 through the sliding block assembly 223, so as to reduce the friction between the first positioning mechanism 221a and the base 210 during moving, and improve the stability of the first positioning mechanism 221a during moving.

Further, the machining fixture 200 further includes a positioning boss 240, the positioning boss 240 is disposed on the base 210 and is located between the two positioning mechanisms 221, that is, the positioning boss 240 is located between the first positioning mechanism 221a and the second positioning mechanism 221b, wherein the width of the positioning boss 240 is smaller than the width of the guide arm 100. It will be appreciated that the locating boss 240 serves to provide support for the long bridge section 130 of the guide arm 100, while simultaneously jacking the long bridge section 130 so that the long bridge section 130 is at a distance from the base 210, reserving space for the tool to operate.

In addition, the width of the positioning boss 240 is smaller than the width of the guide arm 100 to avoid interference with a tool during machining.

In some embodiments, the positioning boss 240 is provided with a mounting location therein, and the second driving member 222 is provided with a mounting location of the positioning boss 240, so that the machining fixture 200 is more compact in structure.

In other embodiments, a plurality of retractable rollers (not shown) are disposed on the positioning boss 240, and the rollers are configured to facilitate movement of the guide arm 100 over the positioning boss 240 to adjust the position. When the clamping structure 230 presses the guide arm 100, the roller is retracted into the positioning boss 240, and the guide arm 100 directly abuts against the positioning boss 240.

EXAMPLE five

Referring to fig. 1 to 5, a processing fixture 200 of the present embodiment can be applied to process a guide arm 100. This embodiment is an improvement made on the basis of the technology of any one of the first to fourth embodiments, and is different from any one of the first to fourth embodiments in that:

referring to fig. 2 and fig. 3, in the present embodiment, the processing fixture 200 further includes a clamping structure 250, the clamping structure 250 is disposed on the base 210, and the clamping structure 250 and the two positioning mechanisms 221 are located on a straight line.

The clamping structure 250 is used to position the lug 140 of the guide arm 100, that is, the clamping structure 250 is located at the end of the long horizontal arm section 130 where the lug 140 is located. The clamping structure 250 includes a hinge seat 251, a pressing arm 252 and a third driving member 253, wherein the hinge seat 251 is connected to the base 210, or the hinge seat 251 is directly disposed on the third driving member 253. The pressing arm 252 is hinged to the hinge seat 251, two ends of the pressing arm 252 extend in a direction away from the hinge seat 251, the third driving member 253 is connected to one end of the pressing arm 252, which is away from the positioning mechanism 221, and the third driving member 253 is used for driving the pressing arm 252 to rotate around the hinge, so that the pressing of the other end of the pressing arm 252 on the tab 140 can be realized by utilizing a lever principle, it can be understood that the pressing arm 252 presses against the upper surface of the tab 140, and the upper surface of the tab 140 is arc-shaped.

Therefore, after the clamping structure 250 clamps the lug 140, the two side surfaces of the lug 140 can be simultaneously processed. The clamping structure 250 can also prevent the lug 140 from shaking during processing, so that the processing fixture 200 provided by the embodiment can process the long cross arm section 130 and the lug 140 by one-time clamping and positioning, and when the lug 140 is processed, the guide arm 100 does not need to be clamped and positioned, so that the processing precision is improved, the labor intensity is reduced, and the production efficiency is improved.

In some embodiments, the third driving member 253 outputs a reciprocating motion in a linear direction, and the third driving member 253 includes a cylinder, a linear motor, an electric push rod, or the like.

Further, the end of the rolling lug 140 away from the long horizontal arm section 130 is engaged against the holding structure 250 for quick positioning of the guide arm 100.

In some embodiments, the clamping structure 250 further includes a wedge-shaped pad 254, the wedge-shaped pad 254 is movably disposed on the base 210, and the wedge-shaped pad 254 is located on a side of the hinge seat 251 facing the positioning mechanism 221. That is, the wedge-shaped pad 254 is used to provide support for the lower surface of the tab 140, so as to prevent the tab 140 from being suspended, and further provide the machining precision.

In addition, the purpose that wedge cushion 254 activity set up is for the not reel ear 140 of equidimension of adaptation, that is to say, wedge cushion 254 can carry out the adaptability according to the size of reel ear 140 and adjust, guarantees that reel ear 140 and wedge cushion 254 offset naturally, and then guarantees to compress tightly back reel ear 140 and receive stable pressure, improves processingquality, simultaneously, improves the practicality of machining anchor clamps 200.

EXAMPLE six

Referring to fig. 1 to 5, a processing fixture 200 of the present embodiment can be applied to process a guide arm 100. This embodiment is an improvement made on the basis of the technology of any one of the first to fifth embodiments, and is different from any one of the first to fifth embodiments in that:

referring to fig. 2, fig. 3 and fig. 4, in the present embodiment, the clamping structure 230 includes an Jiong-shaped frame 231, a fourth driving member 232 and a pressing block 233. It will be appreciated that the Jiong-shaped frame 231 is "Jiong" or "door" shaped, wherein the Jiong-shaped frame 231 is disposed across the symmetrical center line of the base 210 in the length direction, and the Jiong-shaped frame 231 forms a predetermined angle with the symmetrical center line of the base 210 in the length direction, so as to ensure that the Jiong-shaped frame 231 does not block the processing area 131 of the long cross arm section 130, and to ensure that the long cross arm section 130 can be clamped. Wherein the included angle is less than 50 degrees, and the specific size of the included angle is determined according to the length of the processing area 131.

The fourth driving member 232 is disposed on the Jiong-shaped frame 231, the pressing block 233 is disposed on the fourth driving member 232, and the fourth driving member 232 is configured to drive the pressing block 233 to reciprocate along a direction perpendicular to the base 210. Optionally, the fourth driving member 232 includes an air cylinder or an oil cylinder; the width of the clamping block 233 is less than the width of the long cross arm section 130, so as to avoid interference with the tool being machined.

Referring to fig. 4 and 8, further, the Jiong-shaped frame 231 includes two support beams 2310 and a cross beam 2311 connecting the two support beams 2310, wherein the two support beams 2310 are respectively disposed on two sides of the center line of symmetry of the base 210 along the length direction, the two support beams 2310 are respectively close to the two positioning mechanisms 221, one end of the cross beam 2311 is rotatably engaged with one of the support beams 2310, and the other end of the cross beam 2311 is engaged with the other support beam 2310.

In some embodiments, the cross beam 2311 is provided with a shaft hole 2311a at one end, a bushing or bearing is provided in the shaft hole 2311a, and the shaft hole 2311a is rotatably engaged with one of the support beams 2310; the other end of the cross beam 2311 is provided with a U-shaped bayonet 2311b, and the U-shaped bayonet 2311b is in clamping fit with the other support beam 2310.

That is, one end of the cross beam 2311 can rotate around one of the support beams 2310, and when the guide arm 100 is clamped, the other end of the cross beam 2311 should not be clamped with the other support beam 2310; after the guide arm 100 is clamped, the cross beam 2311 is rotated, so that the other end of the cross beam 2311 is clamped with the other support beam 2310, and after the guide arm 100 is positioned, the fourth driving part 232 is started to clamp and fix the guide arm 100; when the guide arm 100 is removed, the cross member 2311 is disengaged from the support beam 2310, and the cross member 2311 is rotated in the opposite direction, whereby the guide arm 100 can be removed. Due to the clamping arrangement of the cross beam 2311, the guide arm 100 can be clamped and disassembled more quickly, and the machining efficiency is further improved.

EXAMPLE seven

Referring to fig. 1 to 8, the processing apparatus of the present embodiment may be used for processing the guide arm 100, and the processing of the two side surfaces of the guide arm 100 may be realized by one-time clamping and positioning, so as to reduce the processing error, improve the processing precision, reduce the labor intensity, and improve the production efficiency.

The machining apparatus provided in this embodiment includes a milling machine (not shown) and any one of the above embodiments provides the machining jig 200.

Wherein the milling machine can select the numerically controlled fraise machine for use, and the milling machine includes processing mesa and two processing blade holders, and two processing blade holders are used for installing the cutter of processing about the processing central line symmetry setting of processing mesa on the blade holder.

The machining fixture 200 is arranged on a machining table of the milling machine, the symmetrical center line of the base 210 in the length direction coincides with the machining center line of the machining table, and further, when the guide arm 100 is clamped on the machining fixture 200, the symmetrical center line of the guide arm 100 coincides with the machining center line of the machining table, so that machining allowances on two side faces of the guide arm 100 are consistent, and accordingly, tool apron feeding amount of the milling machine is consistent. And then through once clamping and location, realize the simultaneous processing of the both sides face of the long xarm section 130 of guide arm 100, further improved the machining precision, reduced intensity of labour, improved production efficiency.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims (10)

1. A processing clamp is applied to processing of a guide arm and is characterized by comprising a base, a clamping structure and a clamping structure;

the clamping structure comprises two positioning mechanisms, the two positioning mechanisms are distributed along the symmetrical center line of the base in the length direction, and the two positioning mechanisms are used for positioning the guide arm, so that the symmetrical center line of the guide arm is superposed with the symmetrical center line of the base in the length direction;

the positioning mechanism comprises a driving assembly and two clamping blocks, the two clamping blocks are arranged on the driving assembly, the two clamping blocks are symmetrically arranged relative to a symmetrical center line of the base in the length direction, and the driving assembly drives the two clamping blocks to approach or separate from each other;

the clamping structure is arranged on the base and used for clamping the positioned guide arm.

2. The machining fixture of claim 1, wherein the drive assembly includes a drive shaft and a first drive member;

external threads with opposite rotation directions are arranged at two ends of the transmission shaft, and internal threads matched with the external threads are arranged on the two clamping blocks;

the first driving piece is matched with the transmission shaft through gear transmission or worm and gear transmission, and the first driving piece is used for driving the transmission shaft to rotate.

3. The machining clamp according to claim 1, wherein the driving assembly comprises two transmission shafts and a first driving member, the two transmission shafts are arranged in a mirror image manner, external threads with opposite rotation directions are arranged at the ends, close to each other, of the two transmission shafts, and the clamping blocks are respectively arranged at the ends, far away from each other, of the two transmission shafts;

the first driving piece is in threaded fit with the two transmission shafts through the transmission nuts, and the first driving piece is used for driving the two transmission shafts to be close to or far away from each other.

4. The machining fixture according to claim 1, wherein the clamping structure further includes a second driving member, the second driving member is disposed on the base, one of the positioning mechanisms is disposed on the second driving member, and the second driving member is configured to drive the positioning mechanism to move closer to or away from the other positioning mechanism.

5. The machining fixture according to claim 1, further comprising a positioning boss disposed on the base and located between the two positioning mechanisms, wherein the width of the positioning boss is smaller than the width of the guide arm.

6. The machining fixture of claim 1, further comprising a clamping structure disposed on the base and aligned with the two positioning mechanisms, the clamping structure being configured to position the eye of the guide arm;

the clamping structure comprises a hinge seat, a pressing arm and a third driving piece, the hinge seat is connected with the base, the pressing arm is hinged to the hinge seat, the third driving piece is connected with one end, far away from the positioning mechanism, of the pressing arm, and the third driving piece is used for driving the pressing arm to rotate around the hinge.

7. The machining clamp according to claim 6, wherein the clamping structure further comprises a wedge-shaped cushion block, the wedge-shaped cushion block is movably arranged on the base and located on one side, facing the positioning mechanism, of the hinged seat, and the wedge-shaped cushion block is used for being abutted against and matched with the rolling lug.

8. The machining jig of any one of claims 1 to 7, wherein the clamping structure comprises an Jiong-shaped frame, a fourth driving member and a pressing block, the Jiong-shaped frame is disposed across a symmetrical center line of the base in the length direction, the Jiong-shaped frame forms a predetermined included angle with the symmetrical center line of the base in the length direction, the fourth driving member is disposed on the Jiong-shaped frame, the pressing block is disposed on the fourth driving member, and the fourth driving member is configured to drive the pressing block to reciprocate in a direction perpendicular to the base.

9. A machining jig according to claim 8, wherein the Jiong-shaped frame includes two support beams and a cross beam connecting the two support beams, wherein the two support beams are respectively disposed on both sides of a central line of symmetry of the base in the longitudinal direction, the two support beams are respectively adjacent to the two positioning mechanisms, one end of the cross beam is rotatably engaged with one of the support beams, and the other end of the cross beam is engaged with the other support beam.

10. A machining apparatus comprising a milling machine and a machining jig according to any one of claims 1 to 9;

the milling machine comprises a processing table board and two processing tool holders, and the two processing tool holders are symmetrically arranged relative to a processing center line of the processing table board;

the processing fixture is arranged on a processing table board of the milling machine, and the symmetrical center line of the base in the length direction coincides with the processing center line of the processing table board.

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