Cylinder sleeve rough machining end face positioning device

Abstract

The utility model belongs to the technical field of machining tools, and particularly relates to an end face positioning device for rough machining of a cylinder sleeve. The clamp is characterized in that a clamp body is fixedly connected with a receiving disc, a cavity is formed between the clamp body and the receiving disc, a positioning rod movement receiving disc is arranged in the cavity in a translation mode, and the positioning rod movement receiving disc is connected with a pull rod and extends out of a center hole; the static positioning inclined block and the movable positioning inclined block are arranged on the peripheral face of the clamp body in a sleeving mode, and the inclined face of the static positioning inclined block and the inclined face of the movable positioning inclined block are oppositely arranged. The clamp body is sleeved with the expansion ring, and the two ends of the expansion ring are provided with slopes matched with the static positioning inclined block and the movable positioning inclined block. The center of the contact plate penetrates through a pull rod and is limited by a nut on the pull rod; the positioning rod is arranged on the positioning rod movement receiving disc and penetrates through the clamp body. The utility model is used for solving the technical problems of frequent tool setting, easy damage of a tool and slow rough machining efficiency caused by the fact that a production tool in the prior art cannot efficiently and accurately carry out axial and radial positioning on the cylinder sleeve.

Description

Technical Field

[0001] The utility model belongs to the technical field of machining tools, and in particular relates to a cylinder sleeve rough machining end face positioning device. Background Art

[0002] The conventional process flow of cylinder liners is rough machining-aging-finishing-inspection-marking, cleaning and packaging. The efficiency and quality of rough machining directly affect the quality of subsequent processing. Since the rough machining process must turn the positioning end face and outer circle, and the existing tooling cannot efficiently and accurately position the cylinder liner axially and radially, each rough machining requires re-tooling, which is slow in production efficiency. In addition, the tool is prone to uneven force during the rough turning process, resulting in tool breakage, increasing the frequency of tool changes, and causing poor rough turning quality, thus affecting the quality of subsequent processing. In addition, current production is all assembly line production. Once this process is a bottleneck process, it directly affects the subsequent production efficiency. In this context, it is necessary to improve the rough machining positioning tooling. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a cylinder liner rough machining end face positioning device, which is used to solve the technical problems that the production tooling in the prior art cannot efficiently and accurately position the cylinder liner axially and radially, thereby causing frequent tool adjustment, easy wear of the tool and low rough machining efficiency.

[0004] The utility model solves the above technical problems with the following technical solutions: A cylinder liner rough machining end surface positioning device, comprising:

[0005] A receiving plate, the receiving plate is used to connect with the machine tool;

[0006] A clamp body, wherein the clamp body is fixedly connected to the receiving plate, a cavity is provided between the clamp body and the receiving plate, and the clamp body is also provided with a center hole;

[0007] A positioning rod motion receiving plate, the positioning rod motion receiving plate can be translated and arranged in the cavity, and a first connecting rod is arranged on one end surface of the positioning rod motion receiving plate, the first connecting rod passes through the receiving plate and is connected to the telescopic device of the machine tool, and a second connecting rod is also arranged on the other end surface of the positioning rod motion receiving plate, the second connecting rod is connected to the pull rod and extends out of the center hole;

[0008] A static positioning bevel block and a dynamic positioning bevel block, wherein the static positioning bevel block and the dynamic positioning bevel block are sleeved on the outer peripheral surface of the fixture body, and the bevel surfaces of the static positioning bevel block and the dynamic positioning bevel block are arranged opposite to each other;

[0009] An expansion ring, which is sleeved outside the clamp body and located between the static positioning bevel block and the dynamic positioning bevel block, and both ends of the expansion ring are provided with slopes adapted to the static positioning bevel block and the dynamic positioning bevel block;

[0010] A contact plate, the center of which passes through the pull rod, the side of which also abuts against the dynamic positioning bevel block and is limited by a nut on the pull rod;

[0011] A positioning rod is arranged on the positioning rod movement receiving plate, and the positioning rod passes through the clamp body.

[0012] In the utility model, the positioning rod on the positioning rod motion receiving plate can position the end face of the cylinder sleeve, and then the cylinder sleeve is tightened by the tightening structure to make the cylinder sleeve concentric with the clamp body, thereby realizing the axial positioning and radial positioning of the cylinder sleeve.

[0013] Furthermore: the static positioning bevel block and the dynamic positioning bevel block are both Hough structures, the static positioning bevel block and the fixture body are interference fit, and the dynamic positioning bevel block and the fixture body are clearance fit.

[0014] The beneficial effect of adopting this step is: the static positioning inclined block does not move, and the dynamic positioning inclined block is pushed by the contact plate to expand the expansion ring and support the cylinder sleeve.

[0015] Furthermore: a groove is provided on the clamp body, and the static positioning inclined block can be partially embedded in the groove.

[0016] The beneficial effect of adopting this step is: the position of the static positioning inclined block is further limited by the groove to ensure that it does not move.

[0017] Furthermore, two positioning convex rings are arranged on the outer peripheral surface of the clamping body, the static positioning inclined block abuts against the inner positioning convex ring, and a spring is arranged between the dynamic positioning inclined block and the outer positioning convex ring.

[0018] The beneficial effect of adopting this step is that the positioning convex ring abuts against the static positioning bevel block to prevent it from moving; and the other positioning convex ring serves as a limiting structure of the spring. When the contact plate leaves the dynamic positioning bevel block, the spring pushes the dynamic positioning bevel block out, allowing the expansion ring to return to its original state and separate from the cylinder sleeve.

[0019] Furthermore: a positioning plate is provided between the contact plate and the nut.

[0020] The beneficial effects of adopting this step are as follows: the contact area with the nut is small and is easily deformed and damaged. The positioning plate replaces the contact plate to contact the nut. The positioning plate is easy to replace if damaged, and the positioning plate itself has a simple structure and is easy to process. In addition, the positioning plate has a large area and can have a larger contact area with the contact plate, allowing the contact plate to contact the dynamic positioning bevel block more evenly.

[0021] Furthermore: there are at least three positioning rods, and the three positioning rods are evenly distributed on the positioning rod motion receiving plate.

[0022] The beneficial effect of adopting this step: using the principle of three points determining one surface, the three positioning rods can more accurately determine the end surface of the cylinder liner.

[0023] Furthermore: both ends of the expansion ring are provided with a plurality of axial deformation grooves.

[0024] The beneficial effect of adopting this step is: after the dynamic positioning inclined block and the static positioning inclined block are pressed into the two ends of the expansion ring, the opening of the expansion ring will be enlarged, and the deformation groove can weaken the rigidity of the two ends of the expansion ring, making it elastically deformed and able to return to its original state without external force.

[0025] The beneficial effects of the utility model are:

[0026] 1. This device enables on-site operators to position the cylinder sleeve axially and radially, saving tool setting time and ensuring product quality;

[0027] 2. This device has the characteristics of simple structure, low manufacturing and maintenance cost, easy to understand working principle, easy positioning, and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 The utility model provides a cross-sectional schematic diagram of a cylinder liner rough machining end surface positioning device.

[0030] Reference numerals:

[0031] 1-positioning rod motion receiving plate; 2-receiving plate; 3-clamp body; 4-positioning rod; 5-static positioning inclined block; 5'-dynamic positioning inclined block; 6-cylinder sleeve; 7-expansion ring; 8-spring; 9-contact plate; 10-positioning plate; 11-nut; 12-pull rod;

[0032] 101 - first connecting rod; 102 - second connecting rod; 31 - positioning protruding ring. DETAILED DESCRIPTION

[0033] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0034] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which the utility model belongs.

[0035] Example

[0036] like Figure 1 As shown, the utility model provides a cylinder liner rough machining end surface positioning device, comprising:

[0037] A receiving plate 2, the receiving plate 2 is used to connect with a machine tool, and is generally connected with a chuck or other fixed tooling of the machine tool;

[0038] A clamp body 3, wherein the clamp body 3 is fixedly connected to the receiving plate 2, a cavity is provided between the clamp body 3 and the receiving plate 2, and the clamp body 3 is also provided with a center hole;

[0039] A positioning rod motion receiving plate 1, the positioning rod motion receiving plate 1 can be translated and arranged in the cavity, and one end surface of the positioning rod motion receiving plate 1 is provided with a first connecting rod 101, the first connecting rod 101 passes through the receiving plate 2 and is connected to the telescopic device of the machine tool, and the other end surface of the positioning rod motion receiving plate 1 is also provided with a second connecting rod 102, the second connecting rod 102 is connected to the pull rod 12 and extends out of the center hole;

[0040] A static positioning bevel block 5 and a dynamic positioning bevel block 5', wherein the static positioning bevel block 5 and the dynamic positioning bevel block 5' are sleeved on the outer peripheral surface of the fixture body 3, and the bevel surfaces of the static positioning bevel block 5 and the dynamic positioning bevel block 5' are arranged opposite to each other;

[0041] An expansion ring 7, which is sleeved outside the clamp body 3 and located between the static positioning bevel block 5 and the dynamic positioning bevel block 5'. Both ends of the expansion ring 7 are provided with slopes adapted to the static positioning bevel block 5 and the dynamic positioning bevel block 5';

[0042] A contact plate 9, the center of which passes through the pull rod 12, the side of which also abuts against the dynamic positioning bevel block 5' and is limited by the nut 11 on the pull rod 12;

[0043] A positioning rod 4 , wherein the positioning rod 4 is arranged on the positioning rod motion receiving plate 1 , and the positioning rod 4 passes through the clamp body 3 .

[0044] In the utility model, the positioning rod 4 on the positioning rod motion receiving plate 1 can position the end surface of the cylinder sleeve 6, and then the cylinder sleeve 6 is tightened by the tightening structure to make the cylinder sleeve 6 concentric with the clamp body 3, thereby realizing the axial positioning and radial positioning of the cylinder sleeve 6.

[0045] Specifically, after the receiving plate 2 is installed on the machine tool, the first connecting rod 101 of the positioning rod movement receiving plate 1 is connected to the telescopic device of the machine tool, and then the clamp body 3 is installed on the receiving plate 2 and fixed with bolts. The pull rod 12 is screwed into the second connecting rod 102 of the positioning rod movement receiving plate 1, and then the static positioning bevel block 5 is installed on the clamp body 3, and then the expansion ring 7 is inserted into the clamping body 3, and after it contacts with the static positioning bevel block 5, the spring 8 and the dynamic positioning bevel block 5' are inserted, so that the expansion ring 7 contacts the inclined surfaces of the static positioning bevel block 5 and the dynamic positioning bevel block 5', and the contact plate 9 is inserted into the pull rod 12, one end of which contacts with the dynamic positioning bevel block 5', and the positioning plate 10 contacts with the contact plate 9, and finally the nut 11 is screwed into the pull rod 12 to complete the installation of the clamp.

[0046] Because the rough machining process of the outer circle of the cylinder sleeve is inner hole positioning, the cylinder sleeve 6 is first sleeved on the expansion ring 7, and the upper end face of the cylinder sleeve 6 (the left end face in the figure) is in contact with the positioning rod 4, and the axial positioning is also completed. When the cylinder sleeve 6 is installed, the machine tool switch is clicked, and the machine tool telescopic device moves with the positioning rod moving receiving plate 1 and the pull rod 12 to the left direction in the figure, and is transmitted to the dynamic positioning inclined block 5' through the contact plate 9. The dynamic positioning inclined block 5' moves toward the machine tool, and the two ends of the expansion ring 7 expand and contact the inner wall of the cylinder sleeve 6 and stick to it. At this time, the axial force is converted into radial force to complete the clamping of the inner hole of the cylinder sleeve 6; at this time, the axial positioning and radial positioning of the cylinder sleeve are completed, and the positioning rod 4 is connected to the positioning rod moving receiving plate 1, and the positioning rod 4 also moves toward the machine tool, so that the positioning rod 4 is separated from the cylinder sleeve 6, leaving space for tool processing, thereby realizing the rough machining positioning of the cylinder sleeve and improving production efficiency.

[0047] On the basis of the above technical solution, the static positioning bevel block 5 and the dynamic positioning bevel block 5 ′ are both Hough structures, the static positioning bevel block 5 and the fixture body 3 are interference fit, and the dynamic positioning bevel block 5 ′ and the fixture body 3 are clearance fit.

[0048] The static positioning inclined block 5 does not move, and the dynamic positioning inclined block 5 ′ is pushed by the contact plate 9 to expand the expansion ring 7 and support the cylinder sleeve 6 .

[0049] On the basis of the above technical solution, a groove is provided on the clamp body 3, and the static positioning inclined block 5 can be partially embedded in the groove.

[0050] The groove is used to further define the position of the static positioning ramp 5 to ensure that it remains stationary.

[0051] On the basis of the above technical solution, the outer peripheral surface of the clamping body 3 is provided with two positioning protruding rings 31 , the static positioning bevel block 5 abuts against the inner positioning protruding ring 31 , and a spring 8 is further provided between the dynamic positioning bevel block 5 ′ and the outer positioning protruding ring 31 .

[0052] The positioning protrusion 31 abuts against the static positioning bevel block 5 to prevent it from moving; and the other positioning protrusion 31 serves as a limiting structure for the spring 8. When the contact plate 9 leaves the dynamic positioning bevel block 5', the spring 8 pushes the dynamic positioning bevel block 5' out, so that the expansion ring 7 returns to its original state and separates from the cylinder sleeve 6.

[0053] On the basis of the above technical solution, a positioning plate 10 is further provided between the contact plate 9 and the nut 11 .

[0054] The contact area with the nut 11 is small and is easily deformed and damaged. The positioning plate 10 replaces the contact plate 9 to contact the nut 11. The positioning plate 10 is easy to replace if it is damaged, and the positioning plate 10 itself has a simple structure and is easy to process. In addition, the positioning plate 10 has a large area and can have a larger contact area with the contact plate 9, allowing the contact plate 9 to contact the dynamic positioning bevel block 5' more evenly.

[0055] On the basis of the above technical solution, there are at least three positioning rods 4 , and the three positioning rods 4 are evenly distributed on the positioning rod motion receiving plate 1 .

[0056] Using the principle of three points determining one surface, the three positioning rods 4 can more accurately determine the end surface of the cylinder sleeve 6 .

[0057] On the basis of the above technical solution, a plurality of axial deformation grooves are provided at both ends of the expansion ring 7 .

[0058] After the dynamic positioning inclined block 5' and the static positioning inclined block 5 are pressed into the two ends of the expansion ring 7, the opening of the expansion ring 7 will be enlarged, and the deformation groove can weaken the rigidity of the two ends of the expansion ring 7, making it elastically deformed and able to return to its original state without external force.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A cylinder liner rough machining end surface positioning device, characterized in that: include: A receiving plate, the receiving plate is used to connect with the machine tool; A clamp body, wherein the clamp body is fixedly connected to the receiving plate, a cavity is provided between the clamp body and the receiving plate, and the clamp body is also provided with a center hole; A positioning rod motion receiving plate, the positioning rod motion receiving plate can be translated and arranged in the cavity, and a first connecting rod is arranged on one end surface of the positioning rod motion receiving plate, the first connecting rod passes through the receiving plate and is connected to the telescopic device of the machine tool, and a second connecting rod is also arranged on the other end surface of the positioning rod motion receiving plate, the second connecting rod is connected to the pull rod and extends out of the center hole; A static positioning bevel block and a dynamic positioning bevel block, wherein the static positioning bevel block and the dynamic positioning bevel block are sleeved on the outer peripheral surface of the fixture body, and the bevel surfaces of the static positioning bevel block and the dynamic positioning bevel block are arranged opposite to each other; An expansion ring, which is sleeved outside the clamp body and located between the static positioning bevel block and the dynamic positioning bevel block, and both ends of the expansion ring are provided with slopes adapted to the static positioning bevel block and the dynamic positioning bevel block; A contact plate, the center of which passes through the pull rod, the side of which also abuts against the dynamic positioning bevel block and is limited by a nut on the pull rod; A positioning rod is arranged on the positioning rod movement receiving plate, and the positioning rod passes through the clamp body.

2. The cylinder liner rough machining end surface positioning device according to claim 1, characterized in that: The static positioning bevel block and the dynamic positioning bevel block are both Hough structures. The static positioning bevel block and the fixture body are in interference fit, while the dynamic positioning bevel block and the fixture body are in clearance fit.

3. The cylinder liner rough machining end surface positioning device according to claim 2, characterized in that: The clamp body is provided with a groove, and the static positioning inclined block can be partially embedded in the groove.

4. The cylinder liner rough machining end surface positioning device according to claim 2, characterized in that: The outer peripheral surface of the clamp body is provided with two positioning convex rings, the static positioning inclined block abuts against the inner positioning convex ring, and a spring is further provided between the dynamic positioning inclined block and the outer positioning convex ring.

5. The cylinder liner rough machining end surface positioning device according to claim 1, characterized in that: A positioning plate is also provided between the contact plate and the nut.

6. The cylinder liner rough machining end surface positioning device according to claim 1, characterized in that: There are at least three positioning rods, and the three positioning rods are evenly distributed on the positioning rod motion receiving plate.

7. The cylinder liner rough machining end surface positioning device according to claim 1, characterized in that: Both ends of the expansion ring are provided with a plurality of axial deformation grooves.

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