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

A processing fixture and processing equipment

technical field

The invention relates to the technical field of mechanical processing, in particular to a processing fixture and processing equipment.

Background technique

The guide arm is generally used in the installation of the suspension of the automobile. face for easy assembly.

In the prior art, the guide arm is bent into a zigzag shape from a steel bar, wherein, the two sides of the cross-arm section are reserved for machining allowances. Machining is performed, and then the other side is processed with this side as the reference plane. Therefore, the guide arm needs to be processed twice, which in turn needs to be clamped and positioned multiple times, resulting in large processing errors, high labor intensity and low production efficiency.

SUMMARY OF THE INVENTION

In order to overcome the deficiencies in the prior art, the present application provides a processing fixture and processing equipment to solve the problem that in the prior art, when the guide arm is processed, multiple clamping and positioning are required, resulting in large processing errors and labor. Technical problems with high strength and low production efficiency.

In order to achieve the above purpose, in the first aspect, a processing fixture provided by the present application is applied to the processing of the guide arm, and the processing fixture includes a base, a clamping structure and a clamping structure;

The clamping structure includes two positioning mechanisms, the two positioning mechanisms are distributed along the symmetrical center line of the length direction of the base, and the two positioning mechanisms are used to position the guide arm, so that the guide arm is The center line of symmetry coincides with the center line of symmetry in the longitudinal direction of the base;

Wherein, the positioning mechanism includes a driving assembly and two clamping blocks, the two clamping blocks are both arranged on the driving assembly, and the two clamping blocks are symmetrically arranged with respect to the symmetrical center line of the length direction of the base, The driving assembly drives the two clamping blocks to approach or move away from each other;

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

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

Both ends of the transmission shaft are provided with external threads with opposite directions of rotation, and both of the two clamping blocks are provided with internal threads adapted to the external threads;

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

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

The first driving member is threadedly engaged with the two transmission shafts at the same time through a transmission nut, and the first driving member is used to drive the two transmission shafts to approach or move 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, and one of the positioning mechanisms is disposed on the second driving member , the second driving member is used to drive the positioning mechanism to approach or move away from the other positioning mechanism.

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

With reference to the first aspect, in a possible implementation manner, the processing 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 in a line In a straight line, the clamping structure is used for positioning the roll ears of the guide arm;

Wherein, the clamping structure includes a hinge seat, a pressing arm and a third driving member, the hinge seat is connected to the base, the pressing arm is hinged on the hinge seat, and the third driving member is connected to the pressing member One end of the arm away from the positioning mechanism, and the third driving member is used to drive 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 spacer block, the wedge-shaped spacer block is movably arranged on the base, and the wedge-shaped spacer block is located in the direction where the hinge seat faces. On one side of the positioning mechanism, the wedge-shaped spacer is used to abut against the roll ear.

In combination with the first aspect, in a possible implementation manner, the clamping structure includes a square frame, a fourth driving member and a pressing block, and the square frame is arranged across the symmetrical centerline in the length direction of the base , and the symmetric center line of the length direction of the base frame and the base is at a predetermined angle, the fourth drive member is arranged on the frame frame, and the pressing block is arranged on the fourth drive member, The fourth driving member is used for driving the pressing block to reciprocate in a direction perpendicular to the base.

In combination with the first aspect, in a possible implementation manner, the rib-shaped frame includes two support beams and a cross beam connecting the two support beams, wherein the two support beams are respectively arranged on the edge of the base On both sides of the symmetrical center line in the longitudinal direction, and the two support beams are respectively close to the two positioning mechanisms, one end of the beam is rotatably matched with one of the support beams, and the other end of the beam is connected with the other The support beams are engaged.

In a second aspect, the application also provides a processing equipment, including a milling machine and the processing fixture provided above;

The milling machine includes a machining table and two machining tool holders, and the two machining tool holders are symmetrically arranged with respect to the machining center line of the machining table;

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

Compared with the prior art, the beneficial effects of the present application:

The application provides a processing fixture and processing equipment. The processing fixture is applied to the processing of the guide arm, and includes a base, a clamping structure and a clamping structure; the clamping structure includes two positioning mechanisms, and the two positioning mechanisms are along the length direction of the base. The symmetrical centerline is distributed, and the two positioning mechanisms are used to position the guide arm, so that the symmetrical centerline of the guide arm coincides with the symmetrical centerline of the length direction of the base; wherein, the two positioning mechanisms include a drive assembly and two clamping blocks, two Each clamping block is arranged on the drive assembly, and the two clamping blocks are symmetrically arranged with respect to the symmetrical center line of the longitudinal direction of the base, and the first driving member drives the two clamping blocks to approach or move away from each other; the clamping structure is arranged on the base, and the clamping structure For clamping the positioned guide arm. In the processing fixture provided by the present application, when in use, the guide arm is placed on the processing fixture, the two clamping blocks in each positioning mechanism are close to each other to clamp the guide arm, and the two positioning mechanisms cooperate with each other, and use two points to determine a The principle of straight line makes the symmetrical center line of the guide arm coincide with the symmetrical center line of the length direction of the base to realize the positioning of the guide arm, and then the clamping structure clamps and fixes the guide arm, and then through one clamping and positioning, you can The two sides of the guide arm can be processed at the same time, reducing the processing error, reducing the labor intensity and improving the production efficiency.

In addition, when processing in the processing equipment, the symmetrical centerline of the longitudinal direction of the base of the processing fixture coincides with the processing centerline of the processing table of the milling machine, and then the symmetrical centerline of the guide arm and the processing centerline of the processing table coincide, so that the two guide arms are overlapped. The machining allowance on the side is consistent, which further improves the machining accuracy.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore do not It should be regarded as a limitation of the scope, and for those of ordinary skill in the art, other related drawings can also be obtained according to these drawings without any creative effort.

FIG. 1 shows a schematic structural diagram of a guide arm provided by an embodiment of the present application;

2 shows a front view of a processing fixture provided in an embodiment of the present application in one state;

3 shows a front view of another state of a processing fixture provided by an embodiment of the present application;

Figure 4 shows a top view of the processing fixture provided in Figure 2;

Figure 5 shows a left side view of the processing fixture provided in Figure 2;

Figure 6 shows a schematic diagram of a partially enlarged structure at A in Figure 5;

Fig. 7 shows another partial enlarged structural schematic diagram at A in Fig. 5;

FIG. 8 shows a schematic diagram of a beam structure of a jig-shaped frame in a processing fixture provided in an embodiment of the present application.

Description of main component symbols:

100-guide arm; 110-short cross arm; 120-vertical arm segment; 130-long cross-arm segment; 131-processing area; 140-roll ear;

200-processing fixture; 210-base; 211-installation hole; 220-clamping structure; 221-positioning mechanism; 2210-drive assembly; 2210a-first drive part; 2210b-transmission shaft; 2210c-guide shaft; 2210e-external thread; 2211-clamping block; 221a-first positioning mechanism; 221b-second positioning mechanism; 222-second driving member; 223-slide rail slider assembly; 230-clamping structure; 2310-support beam; 2311-beam; 2311a-shaft hole; 2311b-U-shaped bayonet; 232-fourth drive part; 233-pressing block; 240-positioning boss; 250-clamping structure; 251 -Hinged seat; 252-Press arm; 253-Third drive member; 254-Wedge spacer.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, only used to explain the present invention, and should not be construed as a limitation of the present invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Back, Left, Right, Vertical, Horizontal, Top, Bottom, Inner, Outer, Clockwise, Counterclockwise, Axial , "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated device or Elements must have a particular orientation, be constructed and operate in a particular orientation and are therefore not to be construed as limitations of the invention.

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

In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of the two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the present invention, unless otherwise expressly specified and limited, a first feature "on" or "under" a second feature may be in direct contact between the first and second features, or the first and second features indirectly through an intermediary touch. Also, the first feature being "above", "over" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

Example 1

Please refer to FIG. 1 and FIG. 2 , a processing fixture 200 in this embodiment can be applied to the processing of the guide arm 100 , and the two sides of the guide arm 100 can be processed by one clamping and positioning, which reduces the processing error , 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 the mounting suspension of the automobile. The guide arm 100 is a long square. After the bending process, the guide arm 100 is Z-shape, and the center line of symmetry of the guide arm 100 is located in the length direction of the guide arm 100 .

The guide arm 100 includes three-segment structures connected in sequence along the length direction. The three-segment structures are a short cross-arm segment 110, a vertical arm segment 120, and a long cross-arm segment 130 in sequence. There are roll ears 140. Wherein, the opposite sides of the long transverse arm section 130 need to be processed into flat surfaces due to assembly requirements. Therefore, in this embodiment, the area that needs to be processed in the long transverse arm section 130 is defined as the processing area 131 .

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

Please refer to FIG. 2 and FIG. 3 , the base 210 is square, and the base 210 is a symmetrical structure, and its symmetrical center line 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 evenly distributed along the circumference of the base 210. The mounting holes 211 allow bolts or screws to pass through to fix the base 210, thereby realizing The installation of the entire processing jig 200 is fixed.

The clamping structure 220 includes two positioning mechanisms 221 . As shown in FIG. 3 , the two positioning mechanisms 221 are distributed along the 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 for positioning the guide arm 100 , so that the center line of symmetry of the guide arm 100 coincides with the center line of symmetry in the longitudinal direction of the base 210 .

In this embodiment, the two positioning mechanisms 221 are used for clamping and positioning the long transverse arm segment 130 of the guide arm 100. It is understandable that when the two positioning mechanisms 221 clamp the long transverse arm segment 130, the long transverse arm segment 130 should be avoided. Processing areas 131 on both sides of the arm segment 130 .

Please refer to FIG. 2 , FIG. 4 and FIG. 5 . Specifically, the two positioning mechanisms 221 include a driving assembly 2210 and two clamping blocks 2211 . About the symmetrical center line of the longitudinal direction of the base 210, the driving assembly 2210 drives the two clamping blocks 2211 to approach or move away from each other. That is to say, 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. At this time, the movements of the two clamping blocks 2211 are synchronized, and the two clamping blocks 2211 are respectively connected to the two clamping blocks 2211. The two side surfaces of the long transverse arm section 130 are abutted to ensure that the symmetrical center line of the guide arm 100 is coincident with the symmetrical center line of the base 210 in the longitudinal direction.

Please refer 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 in a linear direction, and the clamping The direction of movement of the tight structure is perpendicular to the base 210 . Furthermore, through the clamping force of the clamping structure 230 on the guide arm 100, and the positioning and clamping of the guide arm 100 by the clamping blocks 2211 in the two positioning mechanisms 221, the degree of freedom of the guide arm 100 is 0, so as to avoid the guide arm 100 during processing. The arm 100 is offset from the initial positioning point, so that the symmetrical centerline of the guide arm 100 and the symmetrical centerline of the base 210 in the longitudinal direction always coincide, reducing machining errors and improving machining accuracy.

In the present embodiment, when the guide arm 100 is clamped, the clamp structure 230 outputs a motion of moving closer to the base 210 , and the clamp structure 230 abuts against and cooperates with the upper surface of the long transverse arm section 130 of the guide arm 100 to realize the alignment of the guide arm. 100 clamping. It can be understood that the clamping structure 230 should avoid the processing areas 131 of the two sides of the long transverse arm segment 130 to avoid interference when the two sides are processed.

In the processing fixture 200 provided in this embodiment, when in use, the guide arm 100 is placed on the processing fixture 200, and 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, The two positioning mechanisms 221 cooperate with each other and use the principle of two points to determine a straight line, so that the center line of symmetry of the guide arm 100 and the center line of symmetry in the longitudinal direction of the base 210 are coincident, so that the positioning of the guide arm 100 is completed, and then the clamping structure 230 The guide arm 100 is clamped and fixed. Since the center line of symmetry of the guide arm 100 is coincident with the center line of symmetry in the longitudinal direction of the base 210, after clamping, the machining allowances on both sides of the long transverse arm section 130 of the guide arm 100 remain the same. Therefore, the processing fixture 200 can simultaneously process both sides of the guide arm 100 by only one clamping and positioning, thereby reducing processing errors, reducing labor intensity and improving production efficiency.

Embodiment 2

Referring to FIGS. 1 to 5 , a processing fixture 200 in this embodiment can be applied to the processing of the guide arm 100 , and the two sides of the guide arm 100 can be processed by one clamping and positioning, reducing the processing error , reduce labor intensity and improve production efficiency. This embodiment is an improvement made on the technical basis of the above-mentioned first embodiment. Compared with the above-mentioned first embodiment, the difference lies in:

Please refer to FIG. 5 and FIG. 6 in conjunction. In this embodiment, for the convenience of description, one of the two positioning mechanisms 221 is described alternatively. The driving assembly 2210 in the positioning mechanism 221 includes a transmission shaft 2210b, a driving seat 2210d and a first drive Piece 2210a.

The transmission shaft 2210b is rotatably disposed on the drive base 2210d, and both ends of the transmission shaft 2210b extend toward the two ends of the drive base 2210d respectively. Both of the two clamping blocks 2211 are provided with internal threads which are matched with the external threads 2210e. That is to say, when the transmission shaft 2210b rotates, the two clamping blocks 2211 will move synchronously, and the moving directions of the two clamping blocks 2211 can be toward each other or away from each other.

The first driving member 2210a is also disposed on the driving base 2210d. The first driving member 2210a is drivingly matched with the transmission shaft 2210b. The first driving member 2210a drives the transmission shaft 2210b to rotate, thereby driving the two clamping blocks 2211 to act synchronously.

Further, in order to ensure that the two clamping blocks 2211 do not rotate during operation, in this embodiment, the driving seat 2210d is also provided with a guide shaft 2210c, and the guide shaft 2210c and the transmission shaft 2210b are arranged parallel to each other. Both ends of the 2210c extend toward the outside of the drive base 2210d, and the two ends of the guide shaft 2210c pass through the two clamping blocks 2211 respectively. Under the cooperation of the shaft 2210b, the rotation of the two clamping blocks 2211 is restricted.

In some embodiments, the first driving member 2210a is coupled with the transmission shaft 2210b through gear transmission. That is to say, a first gear is provided on the transmission shaft 2210b, and a second gear is also provided on the first driving member 2210a, and the first gear and the second gear are engaged for transmission, wherein the first driving member 2210a outputs rotational motion , and then drive the transmission shaft 2210b to rotate.

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

In other embodiments, the first driving member 2210a and the transmission shaft 2210b are driven to cooperate with each other through a worm gear. That is to say, a worm gear is arranged on the transmission shaft 2210b, and a worm is arranged on the first driving member 2210a, and the worm gear and the worm gear are engaged with each other for transmission, wherein the first driving member 2210a outputs rotational motion, thereby driving the transmission shaft 2210b to rotate. Similarly, the first driving member 2210a can be selected to be a motor, a rotary cylinder or a rotary oil cylinder.

Of course, the first driving member 2210a and the transmission shaft 2210b may also be matched with a chain drive or a belt drive.

In other embodiments, the first driving member 2210a and the transmission shaft 2210b may also be driven and matched by a rack and pinion. The transmission shaft 2210b is provided with a third gear, and the first driving member 2210a is also provided with a rack. The third gear and the rack are engaged for transmission, and the first driving member 2210a can output reciprocating motion in a linear direction. Optionally, the first driving member 2210a includes an oil cylinder, an air cylinder, a linear motor or an electric push rod.

Embodiment 3

Please refer to FIG. 1 to FIG. 5 , a processing fixture 200 of this embodiment can be applied to processing the guide arm 100 . This embodiment is an improvement made on the technical basis of the above-mentioned second embodiment. Compared with the above-mentioned second embodiment, the difference lies in:

Please refer to FIG. 5 and FIG. 7 in conjunction. In this embodiment, the driving assembly 2210 includes two transmission shafts 2210b, a driving base 2210d and a first driving member 2210a. The two transmission shafts 2210b are slidably disposed on the driving base 2210d, and two The drive shafts 2210b are arranged in mirror images of each other. The ends of the two transmission shafts 2210b close to each other are provided with external threads with opposite rotation directions, and the ends of the two transmission shafts 2210b away from each other are provided with clamping blocks 2211 respectively.

In order to prevent the transmission shaft 2210b from driving the clamping block 2211 to rotate, a guide shaft 2210c is also provided in this embodiment, and the guide shaft 2210c is slidably fitted with the drive seat 2210d.

The first driving member 2210a is threadedly engaged with the two transmission shafts 2210b through a transmission nut (not shown) at the same time, and the first driving member 2210a is used to drive the two transmission shafts 2210b to approach or move away from each other. 2210b expands and contracts relative to the driving seat 2210d, thereby driving the clamping blocks 2211 to approach or move away from each other.

For the manner in which the first driving member 2210a drives the transmission nut to rotate, reference may be made to the solution of providing the first driving member 2210a to drive the transmission shaft 2210b in the second embodiment.

Embodiment 4

Please refer to FIG. 1 to FIG. 5 , a processing fixture 200 of this embodiment can be applied to processing the guide arm 100 . This embodiment is an improvement made on the technical basis of any one of the above-mentioned Embodiments 1 to 3. Compared with any of the above-mentioned embodiments, the difference is:

In this example, in order to make the positioning of the guide arm 100 more accurate, at least one positioning mechanism 221 is located in the processing area 131 of the long transverse arm section 130 of the guide arm 100. In order to ensure that the positioning mechanism 221 does not interfere with the processing during processing, it should be During processing, the positioning mechanism 221 is moved to a position other than the processing area 131 .

2 and 3, in this 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 close to the vertical arm section 120, the second positioning mechanism 221a The positioning mechanism 221 b is disposed close to the roll ear 140 , and the first positioning mechanism 221 a is located in the processing area 131 of the long transverse 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 uses In order to drive the first positioning mechanism 221a to approach or move away from the second positioning mechanism 221b, as shown in FIG.

Please refer to FIG. 2 and FIG. 4 , in some embodiments, in order to ensure the stability of the first positioning mechanism 221a when moving, the first positioning mechanism 221a is slidably matched with the base 210 through the sliding rail slider assembly 223, thereby reducing the number of The friction force between the first positioning mechanism 221a and the base 210 when the positioning mechanism 221a is moved improves the stability of the first positioning mechanism 221a when it is moved.

Further, the processing fixture 200 further includes a positioning boss 240, which is disposed on the base 210 and 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 can be understood that the positioning boss 240 is used to provide support for the long transverse arm section 130 of the guide arm 100, and at the same time, the long transverse arm section 130 is raised so that the long transverse arm section 130 is separated from the base 210 by a certain distance, which is reserved for the tool operating space.

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

In some embodiments, the positioning boss 240 is provided with an installation position, and the second driving member 222 is disposed at the installation position of the positioning boss 240 , so that the processing fixture 200 is more compact in structure.

In other embodiments, the positioning boss 240 is provided with a plurality of retractable rollers (not shown), and the rollers are arranged to facilitate the movement of the guide arm 100 on the positioning boss 240 to adjust the proper position. When the clamping structure 230 presses the guide arm 100 , the roller will shrink into the positioning boss 240 , and the guide arm 100 directly abuts with the positioning boss 240 .

Embodiment 5

Please refer to FIG. 1 to FIG. 5 , a processing fixture 200 of this embodiment can be applied to processing the guide arm 100 . This embodiment is an improvement made on the technical basis of any one of the above-mentioned Embodiments 1 to 4. Compared with any of the above-mentioned embodiments, the difference is:

Please refer to FIG. 2 and FIG. 3 , in this 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.

Wherein, the clamping structure 250 is used for positioning the roll ear 140 of the guide arm 100 , that is, the clamping structure 250 is located at the end of the long transverse arm section 130 where the roll ear 140 is arranged. The clamping structure 250 includes a hinge base 251 , a pressing arm 252 and a third driving member 253 . The hinge base 251 is connected to the base 210 , or the hinge base 251 is directly disposed on the third driving member 253 . The pressing arm 252 is hinged on the hinge seat 251 , the two ends of the pressing arm 252 extend away from the hinge seat 251 respectively, the third driving member 253 is connected to one end of the pressing arm 252 away from the positioning mechanism 221 , and the third driving member 253 is used for driving The pressing arm 252 rotates around the hinge joint, and then the other end of the pressing arm 252 can be pressed against the roll ear 140 by leveraging the principle. The upper surface is curved.

In this way, after the curling lug 140 is clamped by the clamping structure 250 , the two side surfaces of the curling lug 140 can be processed simultaneously. The clamping of the clamping structure 250 can also prevent the rolling ears 140 from shaking during processing. Therefore, the processing fixture 200 provided in this embodiment can realize the processing of the long transverse arm section 130 and the rolling ears 140 through one clamping and positioning. When processing the roll ear 140, it is no longer necessary to clamp and position the guide arm 100, thereby improving processing accuracy, reducing labor intensity and improving production efficiency.

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

Further, one end of the roll lug 140 away from the long transverse arm segment 130 is in abutment with the clamping structure 250 , so as to realize the rapid positioning of the guide arm 100 .

In some embodiments, the clamping structure 250 further includes a wedge-shaped spacer 254 , the wedge-shaped spacer 254 is movably disposed on the base 210 , and the wedge-shaped spacer 254 is located on the side of the hinge seat 251 facing the positioning mechanism 221 . That is to say, the purpose of the wedge-shaped spacer 254 is to provide support for the lower surface of the roll ear 140, to prevent the roll ear 140 from being suspended in the air, and to further improve the machining accuracy.

In addition, the purpose of the movable setting of the wedge-shaped spacers 254 is to adapt to the roll ears 140 of different sizes, that is to say, the wedge-shaped spacers 254 can be adaptively adjusted according to the size of the roll ears 140 to ensure that the roll ears 140 and the wedge-shaped cushions The blocks 254 are naturally offset, thereby ensuring that the rolling ears 140 receive stable pressure after being pressed, improving the processing quality, and at the same time, improving the practicability of the processing fixture 200 .

Embodiment 6

Please refer to FIG. 1 to FIG. 5 , a processing fixture 200 of this embodiment can be applied to processing the guide arm 100 . This embodiment is an improvement made on the technical basis of any one of the above-mentioned Embodiments 1 to 5. Compared with any of the above-mentioned embodiments, the difference is:

Please refer to FIG. 2 , FIG. 3 and FIG. 4 , in this embodiment, the clamping structure 230 includes a square frame 231 , a fourth driving member 232 and a pressing block 233 . It can be understood that the spar-shaped frame 231 is in the shape of a “gear” or a “door”, wherein, the bung-shaped frame 231 is arranged across the symmetrical center line of the length direction of the base 210, and the sash-shaped frame 231 and the symmetrical center of the length direction of the base 210 The lines are formed at a predetermined angle to ensure that the square frame 231 does not block the processing area 131 of the long transverse arm section 130 and at the same time ensures that the long transverse arm section 130 can be clamped. Wherein, the included angle is less than 50°, 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 square frame 231 , and the pressing block 233 is disposed on the fourth driving member 232 . Optionally, the fourth driving member 232 includes an air cylinder or an oil cylinder; the width of the pressing block 233 is smaller than the width of the long transverse arm section 130 to avoid interference with the machining tool.

Please refer to FIG. 4 and FIG. 8 , further, the square 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 arranged on the base 210 symmetrically along the length direction On both sides of the center line, and the two support beams 2310 are respectively close to the two positioning mechanisms 221 , one end of the beam 2311 rotates with one of the support beams 2310 , and the other end of the beam 2311 is engaged with the other support beam 2310 .

In some embodiments, one end of the beam 2311 is provided with a shaft hole 2311a, the shaft hole 2311a is provided with a bearing bush or a bearing, and the shaft hole 2311a is rotatably matched with one of the support beams 2310; the other end of the beam 2311 is provided with a U-shaped bayonet 2311b , the U-shaped bayonet 2311b and another support beam 2310 are snap fit.

That is to say, one end of the beam 2311 can rotate around one of the support beams 2310. When the guide arm 100 is clamped, the other end of the beam 2311 should not be engaged with the other support beam 2310; after the guide arm 100 is clamped, Then turn the beam 2311 so that the other end of the beam 2311 is engaged with the other support beam 2310. After the guide arm 100 is positioned, the fourth driving member 232 is activated to clamp and fix the guide arm 100; when the guide arm 100 is taken out When the cross beam 2311 and the support beam 2310 are disengaged, and then rotate the cross beam 2311 in the opposite direction, the guide arm 100 can be taken out. The engaging arrangement of the cross beam 2311 makes the clamping and dismounting of the guide arm 100 quicker, thereby improving the processing efficiency.

Embodiment 7

Please refer to FIG. 1 to FIG. 8 . The processing equipment of this embodiment can be used to process the guide arm 100 . The two sides of the guide arm 100 can be processed by one clamping and positioning, which reduces the processing error and improves the performance of the guide arm 100 . The machining accuracy reduces labor intensity and improves production efficiency.

The processing equipment provided in this embodiment includes a milling machine (not shown in the figure) and a processing fixture 200 provided by any one of the above embodiments.

Among them, CNC milling machine can be selected for the milling machine. The milling machine includes a machining table and two machining tool holders. The two machining tool holders are symmetrically arranged about the machining center line of the machining table, and the tool holders are used to install the machining tools.

The machining fixture 200 is arranged on the machining table of the milling machine, and the symmetrical center line of the base 210 in the longitudinal direction coincides with the machining center line of the machining table. Further, when the guide arm 100 is clamped on the machining fixture 200, the symmetrical center line of the guiding arm 100 is the same as the machining center line of the machining table. The machining center lines of the table top overlap, so that the machining allowances on both sides of the guide arm 100 are the same, and thus, the feed amount of the tool seat of the milling machine is the same. Furthermore, through one clamping and positioning, the two sides of the long transverse arm section 130 of the guide arm 100 can be processed simultaneously, which further improves the processing precision, reduces the labor intensity, and improves the production efficiency.

In the description of this specification, description with reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., mean specific features described in connection with the embodiment or example , structure, material or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed 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, those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other.

Although the embodiments of the present invention have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present invention. Embodiments are subject to variations, modifications, substitutions and variations.

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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