CN-224223343-U - Milling fixture tool for upper and lower surfaces of cylinder covers of multiple varieties

CN224223343UCN 224223343 UCN224223343 UCN 224223343UCN-224223343-U

Abstract

The utility model relates to the technical field of machining fixtures, in particular to a fixture tool for milling the upper surface and the lower surface of a cylinder cover of multiple varieties, which comprises a base, wherein a plurality of positioning holes and mounting holes are formed in the base, positioning components are arranged at the positioning holes formed in the base, and clamping components are arranged at the mounting holes formed in the base and distributed on two sides of the base. The fixture tool for milling the upper and lower surfaces of the cylinder covers of various types has the advantages that firstly, the fixture tool is high in universality, the fixture tool can adapt to the positioning requirements of cylinder covers of various types through the design of the adjustable positioning blocks, the number of special fixtures is reduced, and the manufacturing cost and the management cost of the fixtures are reduced. Secondly, the positioning accuracy is high, the position of the adjustable positioning block can be accurately adjusted, the adjustable positioning block is tightly attached to the positioning reference surface of the cylinder cover, the positioning accuracy of the cylinder cover in the machining process is guaranteed, and the practicability is high.

Inventors

PANG JUNQIAN
LI HUIQUAN
CUI WANCHENG
JIANG YANTAO
SONG JINQIANG
WANG HONGHUI

Assignees

山东大柴缸体缸盖股份有限公司

Dates

Publication Date: 20260512
Application Date: 20250514

Claims (3)

1. The fixture tool for milling the upper and lower surfaces of the cylinder covers of multiple varieties comprises a base and is characterized in that a positioning hole and a mounting hole are formed in the base, and a plurality of positioning holes and mounting holes are formed in the base; The positioning assembly is arranged at a positioning hole formed in the base and used for positioning the cylinder cover placed on the base; and the clamping assemblies are arranged at the mounting holes formed in the base and distributed on two sides of the base and are used for compressing and fixing the cylinder cover.
2. The tooling for milling multiple varieties of cylinder heads and lower fixtures in accordance with claim 1, wherein said positioning assembly comprises: The positioning block passes through bolts which are in threaded connection with positioning holes on the base, the bolts are used for fixing the positioning block on the base, and the positioning block can be fixed at different positioning holes through the bolts to adapt to different cylinder covers; The positioning block is provided with a positioning surface which is matched with the reference surface of the cylinder cover, and is used for realizing accurate positioning of the cylinder cover.
3. The tooling for milling multiple varieties of cylinder heads and lower fixtures in accordance with claim 1, wherein said clamping assembly comprises: The oil cylinders are fixedly arranged on two sides of the base, piston rods are arranged on the oil cylinders, and the oil cylinders are used for driving the piston rods to ascend or descend; the connecting arm is connected with the piston rod, the connecting arm is connected with a pressing plate in a sliding manner, and the pressing plate is provided with a sliding opening; The guide column is fixedly arranged on the base, the pressing plate is sleeved on the guide column through the sliding port, the guide column is in threaded connection with a tightening nut and a double-head threaded sleeve, and the tightening nut is used for limiting the pressing plate; the two ends of the buffer spring are respectively attached to the pressing plate and the double-head threaded sleeve, and the double-head threaded sleeve is used for adjusting the buffer force of the buffer spring; And the elastic gasket is arranged on the lower surface of the pressing plate and used for avoiding the surface from being crushed in the cylinder cover clamping process.

Description

Milling fixture tool for upper and lower surfaces of cylinder covers of multiple varieties Technical Field The utility model relates to the technical field of machining clamps, in particular to a fixture for milling the upper and lower surfaces of cylinder covers of various types. Background In the engine manufacturing process, the machining precision of the cylinder head plays a key role in the performance of the engine. Milling the upper and lower faces of the cylinder head is an important process in its machining process. However, the existing cylinder head fixture tool has the problem of poor universality, and different types of cylinder heads often need to be designed with special fixtures, so that the manufacturing cost and the management cost of the fixtures are increased, and the production efficiency is reduced. In addition, the existing clamp is still to be improved in terms of positioning precision and clamping stability, and is difficult to meet the machining requirement of high precision, so that a clamp tool for milling the upper surface and the lower surface of a cylinder cover of various types is needed to solve the problems. Disclosure of utility model The embodiment of the utility model aims to provide a fixture tool for milling the upper and lower surfaces of various cylinder covers, which solves the problems of poor universality, insufficient positioning precision and insufficient clamping stability of fixtures in the prior art and realizes efficient and high-precision machining of various cylinder covers. The embodiment of the utility model discloses a fixture tool for milling the upper and lower surfaces of various cylinder covers, which comprises a base, positioning assemblies and clamping assemblies, wherein the base is provided with positioning holes and mounting holes, the positioning holes and the mounting holes are respectively provided with a plurality of positioning assemblies, the positioning assemblies are arranged at the positioning holes formed in the base and are used for positioning a cylinder cover placed on the base, and the clamping assemblies are arranged at the mounting holes formed in the base and are distributed on two sides of the base and are used for compressing and fixing the cylinder cover. The positioning assembly comprises a positioning block, wherein bolts in threaded connection with positioning holes in a base are arranged on the positioning block in a penetrating mode, the bolts are used for fixing the positioning block on the base, the positioning block can be fixed at different positioning holes through the bolts to adapt to different cylinder covers, positioning surfaces are arranged on the positioning block, and the positioning surfaces are matched with the reference surfaces of the cylinder covers and used for achieving accurate positioning of the cylinder covers. The clamping assembly comprises an oil cylinder fixedly arranged on two sides of a base, a piston rod arranged on the oil cylinder and used for driving the piston rod to ascend or descend, a connecting arm connected with the piston rod, a pressing plate connected with the connecting arm in a sliding mode, a sliding opening formed in the pressing plate, a guide column fixedly arranged on the base, a clamping nut and a double-head threaded sleeve, wherein the clamping nut is used for limiting the pressing plate, the two ends of the buffer spring are respectively abutted to the pressing plate and the double-head threaded sleeve, the double-head threaded sleeve is used for adjusting the buffer force of the buffer spring, and an elastic gasket is arranged on the lower surface of the pressing plate and used for preventing the surface of the cylinder head from being crushed in the clamping process. The fixture tool for milling the upper and lower surfaces of the cylinder covers of various types has the advantages that firstly, the fixture tool is high in universality, the fixture tool can adapt to the positioning requirements of cylinder covers of various types through the design of the adjustable positioning blocks, the number of special fixtures is reduced, and the manufacturing cost and the management cost of the fixtures are reduced. Secondly, the positioning accuracy is high, the position of the adjustable positioning block can be accurately adjusted, the adjustable positioning block is tightly attached to the positioning reference surface of the cylinder cover, and the positioning accuracy of the cylinder cover in the machining process is ensured. And thirdly, the clamping stability is good, the pressing plate driven by the oil cylinder can provide stable clamping force, and the arrangement of the elastic gasket ensures the clamping effect, protects the surface quality of the cylinder cover and improves the stability in the processing process. Fourthly, the production efficiency is improved, the fixture tool can rapidly realize the clamping and switching of cylinder covers of different varie