CN111390214A

CN111390214A - Second eccentric clamp for crankshaft turning

Info

Publication number: CN111390214A
Application number: CN202010263986.7A
Authority: CN
Inventors: 钱梅; 陈中华; 智明; 徐长龙; 王国荣
Original assignee: Wuxi Junya Machinery Co ltd
Current assignee: Wuxi Junya Machinery Co ltd
Priority date: 2020-04-06
Filing date: 2020-04-06
Publication date: 2020-07-10

Abstract

The invention relates to the technical field of crankshafts, and discloses a second eccentric fixture for a crankshaft lathe, which comprises a fixture body, an elongated slot and an elastic chuck, wherein the right end of the fixture body is connected with the elastic chuck, the elastic chuck is provided with the elongated slot, the fixture body is provided with a positioning hole, the positioning hole is provided with a positioning pin, the left end of the fixture body is fixedly connected with a connecting block, the left end of the connecting block is fixedly connected with a fixed clamping position, the right end surface of the elastic chuck is provided with a force unloading load, the force unloading loads are arranged in a plurality, and a jack is formed in the center position of the elastic chuck. The position precision meets the product characteristics, and the production efficiency is greatly improved.

Description

Second eccentric clamp for crankshaft turning

Technical Field

The invention relates to the technical field of crankshafts, in particular to a second eccentric clamp for a crankshaft lathe.

Background

The crankshaft is the most important part in the engine, bears the force transmitted by the connecting rod, converts the force into torque, outputs the torque through the crankshaft and drives other accessories on the engine to work, and the crankshaft is subjected to the combined action of centrifugal force of rotating mass, gas inertia force with periodic change and reciprocating inertia force to bear the effect of bending and twisting load.

When the existing second eccentric fixture is used, a standard lathe is easy to machine a first eccentric excircle, the position error is not easy to control when the second eccentric excircle is turned, the second eccentric excircle is limited by the space of the first eccentric excircle, a positioning block needs to be removed after positioning and clamping, the workpiece is very long in clamping time, the production efficiency is low, and the position precision is insufficient, so that the defects are overcome by urgently needing the crankshaft turning second eccentric fixture.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a second eccentric clamp for crankshaft turning, which solves the problems that a first eccentric excircle of a standard lathe is relatively easy to machine, the position error is difficult to control when the second eccentric excircle is turned, the second eccentric excircle is limited by the space of the first eccentric excircle, a positioning block needs to be removed after positioning and clamping, the workpiece clamping time is long, the production efficiency is low, and the position precision is insufficient in the conventional second eccentric clamp.

The invention provides the following technical scheme: the utility model provides a bent axle car second eccentric fixture, includes anchor clamps body, elongated slot and collet chuck, the right-hand member of anchor clamps body is connected with collet chuck, the elongated slot has been seted up on the collet chuck, the locating hole has been seted up on the anchor clamps body, locating hole department is provided with the locating pin, the left end fixed connection connecting block of anchor clamps body, the left end fixed connection fixed position screens of connecting block, it unloads power lotus to have seted up on collet chuck's the right-hand member face, the quantity that unloads power lotus sets up to a plurality of, collet chuck's central point puts and forms the jack.

Preferably, the number of the long grooves is four.

Preferably, the diameter of the connecting block is smaller than that of the fixing clip.

Preferably, the interior of the clamp body is hollow.

Preferably, the positioning pin can be quickly plugged in and pulled out of the positioning hole.

Compared with the prior art, the invention has the following beneficial effects:

this be applicable to eccentric anchor clamps of bent axle car second, simple structure, reasonable in design to basic excircle, first eccentric excircle are the position degree benchmark, pulls out the locating pin after pressing from both sides the work piece location with the locating pin that can quick plug, has shortened the used time of work piece clamping, and the position precision satisfies the product characteristic, and production efficiency improves greatly.

Drawings

FIG. 1 is a schematic structural view of a second eccentric clamp of a crankshaft lathe according to the present invention;

FIG. 2 is a schematic external view of a second eccentric clamp of a crankshaft lathe according to the present invention;

FIG. 3 is a right side view of a second eccentric clamp of a crankshaft lathe of the present invention.

In the figure: 1. a clamp body; 2. a long groove; 3. an elastic collet; 4. positioning pins; 5. connecting blocks; 6. fixing the clamping position; 7. unloading the force load; 8. a jack; 9. and (7) positioning the holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, a second eccentric clamp of a crankshaft lathe comprises a clamp body 1, an elongated slot 2 and an elastic clamp head 3, wherein the right end of the clamp body 1 is connected with the elastic clamp head 3, the elastic clamp head 3 is provided with the elongated slot 2, the clamp body 1 is provided with a positioning hole 9, the positioning hole 9 is provided with a positioning pin 4, the positioning pin 4 can be pulled out after the positioning pin 4 is quickly inserted and pulled out to position and clamp a workpiece by utilizing the mutual cooperation between the positioning pin 3 and the elongated slot 2, the time for clamping the workpiece is shortened, the left end of the clamp body 1 is fixedly connected with a connecting block 5, the left end of the connecting block 5 is fixedly connected with a fixed clamp 6, the right end surface of the elastic clamp head 3 is provided with a plurality of unloading loads 7, the number of the unloading loads 7 is set to be a plurality, a jack 8 is formed at the central position of the, the production efficiency is greatly improved, the number of the long grooves 2 is four, the diameter of the connecting block 5 is smaller than that of the fixing clamping position 6, the inside of the clamp body 1 is arranged in a hollow mode, and the positioning pin 4 can be rapidly inserted and pulled in the positioning hole 9.

The working principle and the using process of the invention are as follows: firstly, the positioning pin 4 is inserted into the positioning hole 9, the elastic chuck 3 is arranged in the locking nut, the crankshaft is inserted into the jack 8 of the elastic chuck 3, after the insertion is finished, the clamp body 1 is fixed on the three-jaw chuck through the fixing clamping position 6, and after the fixing is finished, the positioning pin 4 is pulled out from the positioning hole 9.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A second eccentric clamp for crankshaft turning comprises a clamp body (1), an elongated slot (2) and an elastic chuck (3), and is characterized in that; the clamp is characterized in that the right end of the clamp body (1) is connected with an elastic chuck (3), an elongated slot (2) is formed in the elastic chuck (3), a positioning hole (9) is formed in the clamp body (1), a positioning pin (4) is arranged at the positioning hole (9), a connecting block (5) is fixedly connected to the left end of the clamp body (1), a fixed clamping position (6) is fixedly connected to the left end of the connecting block (5), a load unloading position (7) is formed in the right end face of the elastic chuck (3), the number of the load unloading positions (7) is set to be a plurality of, and a jack (8) is formed in the center position of the elastic chuck (3).

2. The second eccentric clamp of the crankshaft lathe according to claim 1, wherein: the number of the long grooves (2) is four.

3. The second eccentric clamp of the crankshaft lathe according to claim 1, wherein: the diameter of the connecting block (5) is smaller than that of the fixing clamp (6).

4. The second eccentric clamp of the crankshaft lathe according to claim 1, wherein: the clamp body (1) is hollow.

5. The second eccentric clamp of the crankshaft lathe according to claim 1, wherein: the positioning pin (4) can be quickly inserted and pulled out from the positioning hole (9).