Connecting rod planer type milling machine fixture

Abstract

The utility model discloses a connecting rod planer type milling machine fixture which comprises a base. Five force bearing points are arranged on the front portion of the base, and three force bearing points are arranged on the rear portion of the base. The top end and the two side faces of the front portion of the base are each provided with a supporting seat used for fixing stress points, the top end is provided with one stress point, and the two side faces are each provided with two stress points. The tail end of the rear portion and the two side faces of the base are each provided with a supporting seat used for fixing stress points, the stress directions of the stress points of the two side faces point to the circle center of the arc face of the small-head mounting hole blank, and each stress point is provided with a locking bolt. Two supporting points are arranged on the front portion of the base, one supporting point is arranged on the rear portion of the base, and surface positioning of the clamp is completed by adjusting adjustable cambered surface screws installed on the supporting points. A floating support is arranged in the center of the front end of the base so as to enhance the rigidity of the process system. The clamp adopts the transverse thread group for clamping, so that deformation and vibration can be effectively reduced, and the self-locking property is good. The device is suitable for manual operation. The machining precision is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to connecting rod clamp technical field, concretely is a connecting rod gantry milling machine clamp. BACKGROUND

[0002] Connecting rod is the key part of diesel engine, it connects piston and crankshaft, makes the reciprocating motion of piston become the rotary motion of crankshaft and exports power to outside. In the work, not only the pressure produced by burning gas is borne, but also the inertial force in longitudinal and transverse directions is borne. The processing precision is very high.

[0003] In the prior art, in rough machining of the upper and lower surfaces of the big head and the small head of the connecting rod, first, the size limit of the upper and lower surfaces of the big head and the small head and the center line of the horizontal direction of the rod body are drawn according to the drawing procedure, and are used as the reference line, then the horizontal direction of the connecting rod is aligned according to the center line, two force points are arranged at the rod body, the pressing plate is pressed tightly, and milling is completed on the milling machine. The supporting structure has poor stability, the milling process has low efficiency, and the processing precision is poor. UTILITY MODEL CONTENTS

[0004] In view of the defects of the prior art, the utility model provides a gantry milling machine clamp for rough machining of the upper and lower surfaces of the big head and the small head of the connecting rod. The problems of low milling efficiency and poor precision are solved.

[0005] To achieve the above object, the utility model is realized by the following technical scheme, a connecting rod gantry milling machine clamp, comprising a base. The front part of the base is provided with five force points, and the rear part is provided with three force points, and a total of eight force points are designed.

[0006] The front end and the two sides of the front part of the base are respectively provided with supporting seats for fixing the force points.

[0007] Preferably, one force point is arranged at the top end, and one locking bolt is threadedly connected. Two force points are respectively arranged at each of the two sides, and four locking bolts are threadedly connected.

[0008] The tail end and the two sides of the rear part of the base are respectively provided with one supporting seat for fixing the force points.

[0009] The force direction of the force points of the two sides of the rear part of the base points to the center of the outer surface of the small head mounting hole blank. The end face of the supporting seat is perpendicular to the connecting line of the force point and the center.

[0010] Preferably, one locking bolt is arranged at the tail end and the two sides of the rear part of the base.

[0011] The front part of the base is provided with two supporting points, the rear part is provided with one supporting point, and a total of three supporting points are arranged, the upper bottom plate of the base is threadedly connected with three arc surface adjustable screws at the supporting point positions, and is used for adjusting the horizontal direction, and the surface positioning of the clamp is composed.

[0012] Preferably, a floating support is arranged at the front center position of the fixture base, and an arc surface adjustable screw rod is arranged to enhance the rigidity of the process system.

[0013] Preferably, the fixture adopts transverse thread group clamping, which can effectively reduce deformation and vibration, has good self-locking property, and is suitable for manual operation.

[0014] Preferably, the base is welded by an upper bottom plate and a lower bottom plate support plate, four through holes are arranged on the lower bottom plate of the base at corresponding positions, and are used for fastening connection of the fixture on a machine tool. The locking bolt passes through the through hole, and is screwed tightly after being pre-tightened by a hexagonal nut to complete installation of the fixture on the machine tool.

[0015] The utility model provides a connecting rod gantry milling machine fixture, has the following beneficial effects. The fixture is positioned in the horizontal direction by three supporting points and three arc surface adjustable screw rods arranged on the base. A floating support is arranged at the front center position, and an arc surface adjustable screw rod is arranged to enhance the rigidity of the process system. Three supporting seats are arranged at the front part of the base, five stress points are designed, three supporting seats are arranged at the rear part of the base, three stress points are designed, and eight stress points are arranged to clamp the fixture. The fixture adopts transverse thread group clamping, which can effectively reduce deformation and vibration, has good self-locking property. Four through holes are designed on the lower bottom plate of the base and are used for fastening connection of the fixture on a machine tool. The fixture is accurately positioned, reliably clamped, improves the quality of products, and shortens the process cycle. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the front view of the utility model.

[0017] Figure 2 It is the left view of the utility model.

[0018] Figure 3 It is the top view of the utility model.

[0019] Figure 4 It is the front view of the schematic diagram of the utility model for clamping a connecting rod.

[0020] Figure 5 It is the left view of the schematic diagram of the utility model for clamping a connecting rod.

[0021] Figure 6 It is the top view of the schematic diagram of the utility model for clamping a connecting rod.

[0022] In the drawing: 1 - lower bottom plate, 2 - supporting plate, 3 - upper bottom plate, 4 - supporting seat one, 5 - supporting seat two, 6 - supporting seat three, 7 - locking bolt, 8 - arc surface adjustable screw rod. PREFERRED EMBODIMENT

[0023] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of the present application.

[0024] The existing clamping and supporting structure has poor stability, low milling efficiency and poor machining precision.

[0025] Therefore, a connecting rod gantry milling machine clamp is provided. The upper bottom plate 3 of the base is effectively connected with the cambered adjustable screw 8 to form the surface positioning of the clamp. Six supporting seats are arranged on the front and rear parts of the base, eight stress points are arranged, and eight locking bolts 7 are designed to form a threaded group clamping mechanism. The clamping of the clamp is completed. Four through holes are arranged on the lower bottom plate 1 of the base to realize the fastening connection of the clamp and the machine tool.

[0026] In the specific implementation process, the three cambered adjustable screws 8 are threadedly connected on the surface of the upper bottom plate 3 of the base, the supporting points are adjusted by rotating the cambered adjustable screw 8, and the surface positioning of the connecting rod on the clamp is completed.

[0027] The top of the cambered adjustable screw 8 is processed with two small through holes that are perpendicular to each other, and four small through holes that are perpendicular to each other are obtained on the circumference of the top. The four small through holes are used for inserting the tapered rod when rotating the cambered adjustable screw 8.

[0028] Further, one supporting point is arranged at the center position of the front part of the base, and one cambered adjustable screw 8 is installed as a floating support to enhance the rigidity of the process system.

[0029] Further, a supporting seat three 6 is arranged at the top end of the front part of the base, one stress point is arranged, and one locking bolt 7 is installed.

[0030] Further, one supporting seat one 4 is arranged on each of the two side surfaces of the front part of the base, two supporting points are arranged on each of the supporting seat one 4, and one locking bolt 7 is installed on each of the supporting points.

[0031] Further, one supporting seat three 6 is arranged at the tail end of the rear part of the base, and one locking bolt 7 is installed.

[0032] Further, one supporting seat two 5 is arranged on each of the two side surfaces of the rear part of the base, one stress point is arranged on each of the supporting seat, and one locking bolt 7 is installed on each of the stress points.

[0033] The stress direction of the stress points on the two side surfaces of the rear part of the base points to the center of the outer surface of the small head mounting hole blank, and the end face of the supporting seat two 5 is perpendicular to the connecting line of the stress point and the center.

[0034] The base of the fixture is welded by the upper bottom plate 1 and the lower bottom plate 3 and the supporting plate 2, and the lower bottom plate 1 of the base is provided with four through holes at corresponding positions for fastening connection of the fixture on the machine tool.

[0035] In the specific implementation process, it is particularly worth pointing out that the fixture adopts transverse threaded group clamping, which can effectively reduce deformation and vibration, and has good self-locking property.

[0036] Specifically, four T-shaped nuts are slid to the corresponding positions through the T-shaped grooves of the workbench, and four long rod locking bolts are screwed into the T-shaped nuts. The fixture is hung and lowered onto the upper surfaces of the four long rod locking bolts at the corresponding positions of the workbench of the gantry milling machine, and the four through holes of the lower bottom plate 1 of the fixture base are aligned with the four long rod locking bolts, and then the fixture is lowered, and the upper six-nut force is tightened, and the fastening and installation of the fixture on the machine tool are completed.

[0037] The connecting rod 10 is hung and lowered onto the arc surfaces of the three supporting point arc adjustable bolts 8 on the upper bottom plate 3 of the fixture base, the taper rod is inserted into the four through holes at the top of the arc adjustable bolt 8, the arc adjustable screw 8 of the three supporting points is adjusted, and the horizontal direction of the connecting rod is aligned with the center line of the rod body determined by the marking process as the reference line. Then the taper rod is inserted into the four small through holes at the top of the arc adjustable screw 8 provided at the supporting point for floating support arranged at the center position of the front part of the base, and the top arc is slightly in contact with the surface of the connecting rod by rotating adjustment, so as to enhance the rigidity of the process system.

[0038] The top end and the two sides of the front part of the upper bottom plate 3 of the base are transversely rotated in sequence by using an outer hexagonal wrench, the locking bolts 7 arranged at the five stress points of the supporting seat are pre-tightened, the reference line fluctuation state is checked by using a marking disc, the locking bolts 7 arranged at the three stress points of the supporting seat are pre-tightened, the reference line fluctuation state is checked by using a marking disc, and the installation of the connecting rod on the fixture is completed after the adjustment and force tightening.

[0039] After milling is completed, the locking bolts 7 arranged at the stress points of each supporting seat are reversely rotated in sequence, the locking bolts 7 are separated from the stress points, the clamping force disappears, and the rough machining process of the upper and lower surfaces of the large and small heads of the connecting rod is completed.

Claims

1. A connecting rod jig for a jig borer, characterized by, The base includes 5 force points in the front part and 3 force points in the rear part, a total of 8 force points; the top end and the two sides of the front part of the base are respectively provided with supporting seats for fixing the force points; The top end of the base is provided with 1 force point and 1 locking bolt is threadedly connected; the two sides of the base are respectively provided with 2 force points and 4 locking bolts are threadedly connected; The tail end and the two sides of the rear part of the base are respectively provided with 1 supporting seat for fixing the force point; The force direction of the force points on the two sides of the rear part of the base points to the center of the outer surface of the small-end mounting hole blank; the end face of the supporting seat is perpendicular to the connecting line of the force point and the center.

2. The connecting rod planer fixture according to claim 1, characterized in that: The tail end and the two sides of the rear part of the base are respectively provided with 1 locking bolt; The front part of the base is provided with 2 supporting points and the rear part is provided with 1 supporting point, a total of 3 supporting points; the upper bottom plate of the base is threadedly connected with 3 arc adjustable screws at the supporting point positions, which are used for adjusting the horizontal direction and positioning the surface of the clamp.

3. The connecting rod planer-type jig according to claim 2, characterized in that: The center position of the front part of the base is provided with a floating support and 1 arc adjustable screw.

4. The connecting rod planer fixture according to claim 3, characterized in that: The clamp adopts transverse thread group clamping, which can effectively reduce deformation and vibration.

5. The connecting rod planer fixture of claim 4, wherein: The base is welded by the upper bottom plate, the lower bottom plate and the supporting plate; the lower bottom plate of the base is provided with 4 through holes at the corresponding positions, which are used for fastening connection of the clamp on the machine tool; the locking bolt passes through the through hole, is pre-tightened by a hexagonal nut and is then tightly screwed, so that the installation of the clamp on the machine tool is completed.

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