CN211866632U

CN211866632U - Camshaft support boring jig

Info

Publication number: CN211866632U
Application number: CN202020115798.5U
Authority: CN
Inventors: 黄勇; 高智
Original assignee: Chengdu Hangxing Machinery Manufacturing Co ltd
Current assignee: Chengdu Hangxing Machinery Manufacturing Co ltd
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2020-11-06
Anticipated expiration: 2030-01-17

Abstract

The utility model discloses a camshaft support boring fixture, which comprises a bottom plate, a force application component and a clamping component, wherein the clamping component comprises a pressing ring and a supporting body which are used for pressing the camshaft support and a positioning mandrel which is used for positioning the camshaft support; the clamp ring is connected with the force application assembly, the support body is fixedly installed on the upper surface of the bottom plate, a mandrel hole is formed in the support body, the positioning mandrel is slidably arranged in the mandrel hole, and the positioning mandrel, the mandrel hole and the clamp ring are concentric. The utility model discloses a bore hole can be fixed on ordinary horizontal milling machine to the bottom plate to through the quick convenient location of realizing the work piece of the cooperation of clamp ring and left supporter, because of the adoption be ordinary horizontal milling machine, so the effectual use cost who reduces equipment energy consumption and cutter, thereby reduce the cost of the whole processing of work piece, and work piece processingquality precision is higher.

Description

Camshaft support boring jig

Technical Field

The utility model belongs to the technical field of the anchor clamps frock technique and specifically relates to a camshaft support bore hole anchor clamps that says so.

Background

The camshaft support is a heavy truck axle part, which is one of key parts in a truck brake system, so that the machining precision requirement of the camshaft support is relatively high, particularly holes on the camshaft support. At present, broaching machine tool with large power, high energy consumption and high cutter cost are adopted for broaching and radial drilling machine reaming, so that the machining cost of parts is high, and the errors of the machined parts are often large due to elastic deformation, so that the quality requirements cannot be met; however, in the reaming process, the diameter of a reamed hole is unstable, the consumption of a tool is high, and the hole is damaged due to the jumping of a main shaft of a machine tool, so that the probability of occurrence of defective products is high, and the overall processing cost is increased.

Under the background, discussion and research show that the problem existing in the machining hole of the camshaft support can be effectively solved by adopting a boring mode, so that the design of the clamp suitable for boring the workpiece such as the camshaft support is the key for solving the problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art not enough, provide a camshaft support bore hole anchor clamps, the utility model discloses a bottom plate can be fixed and carry out the bore hole on ordinary horizontal milling machine to the location of the quick convenient realization work piece of cooperation through clamp ring and left supporter is equally suitable for ordinary horizontal milling machine, so the effectual equipment energy consumption that has reduced, thereby reduce the whole cost of processing of work piece, and work piece processingquality precision is higher.

The purpose of the utility model is realized through the following technical scheme: a camshaft support boring clamp comprises a bottom plate, a force application assembly and a clamping assembly, wherein the clamping assembly comprises a pressing ring and a supporting body which are used for pressing a camshaft support, and a positioning mandrel which is used for positioning the camshaft support;

the clamp ring is connected with the force application assembly, the support body is fixedly installed on the upper surface of the bottom plate, a mandrel hole is formed in the support body, the positioning mandrel is slidably arranged in the mandrel hole, and the positioning mandrel, the mandrel hole and the clamp ring are concentric.

Furthermore, the supporter includes left supporter and right supporter, left side supporter with right supporter clearance is located the bottom plate upper surface, the positioning core axle is close to the pressure ring end is equipped with work piece complex boss.

Furthermore, a stop block is arranged at the end, far away from the compression ring, of the positioning mandrel, and a handle is installed on the stop block.

Further, the force application assembly comprises a fixed plate, an air cylinder, a tensioning plate, a pull rod and a pressing rod, wherein the fixed plate is arranged on the upper surface of the bottom plate, the air cylinder is arranged on the fixed plate, the tensioning plate is connected with a piston rod of the air cylinder, one end of the pull rod is connected with the tensioning plate, the other end of the pull rod is connected with one end of the spring bolt pressing rod, and the other end of the pressing rod is connected with the pressing ring.

Furthermore, the number of the pull rods and the number of the press rods are two, the two pull rods are symmetrically arranged at two ends of the tensioning plate, the middle of the tensioning plate is connected with a piston rod of the cylinder, the two press rods are symmetrically connected with the clamp ring, and the two press rods are located on the same central line of the clamp ring.

Further, the depression bar includes spacing section and linkage segment, the external diameter of spacing section is greater than the external diameter of linkage segment, spacing section with one side of clamp ring link is equipped with the breach that is used for installing the clamp ring, spacing section with the opposite side of clamp ring link is equipped with the chamfer, the surface of linkage segment is equipped with the external screw thread, the pull rod is equipped with even with linkage segment external diameter complex mounting hole, the linkage segment passes the mounting hole is fixed through the nut.

Furthermore, the upper surface of the bottom plate is provided with a stand column, one end of the stand column, which is far away from the bottom plate, is provided with a guide hole, the pull rod penetrates through the guide hole, and two ends of the pull rod are respectively connected with the tensioning plate and the pressure rod.

Furthermore, the fixed plate inboard is equipped with spacing seat, spacing seat is transversal personally submits L shape, the minor face of spacing seat with bottom plate fixed connection, the long limit of spacing seat with the fixed plate is connected, the inboard orientation of spacing seat the take-up plate.

Furthermore, a plurality of U-shaped fixing holes are formed in the other two opposite side edges of the bottom plate, the U-shaped fixing holes are symmetrical about the central line of the core shaft hole, and the U-shaped fixing holes are distributed close to two sides of the supporting body.

Furthermore, the lower end face of the bottom plate is provided with two guide positioning pins which are symmetrically arranged.

The utility model has the advantages that: the utility model discloses a bore hole can be fixed on ordinary horizontal milling machine to the bottom plate, and through clamp ring, the tight location of the clamp of realization work piece that supporter and positioning mandrel three mutually support can be convenient fast, the clamp ring has the hole that slightly is greater than the boring cutter external diameter simultaneously, the effect of dodging can be played at the in-process of boring cutter feed, because of the adoption be ordinary horizontal milling machine, thereby use this anchor clamps can effectually reduce the use cost of equipment energy consumption and cutter, thereby reduce the cost of work piece whole processing, and work piece processingquality precision is higher.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view of the structure of the present invention;

FIG. 2 is a schematic top view of the present invention;

fig. 3 is a schematic view of the overhead structure during processing according to the present invention.

In the figure, 1-bottom plate, 2-force application component, 21-fixing plate, 22-air cylinder, 23-tensioning plate, 24-pull rod, 25-pressure rod, 251-limiting section, 252-connecting section, 3-clamping component, 31-pressing ring, 32-supporting body, 321-left supporting body, 322-right supporting body, 33-positioning mandrel, 331-boss, 332-stop block, 4-handle, 5-upright post, 6-limiting seat, 7-U-shaped fixing hole, 8-guiding positioning pin and 9-workpiece.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The terms "parallel", "perpendicular", etc. do not require that the components be absolutely parallel or perpendicular, but may be slightly inclined. For example, "parallel" merely means that the directions are more parallel relative to "perpendicular," and does not mean that the structures are necessarily perfectly parallel, but may be slightly tilted.

The terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal, vertical or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the present invention provides a technical solution: a camshaft support boring clamp comprises a base plate 1, a force application assembly 2 and a clamping assembly 3, wherein the clamping assembly 3 comprises a pressing ring 31 and a supporting body 32 for pressing the camshaft support, and a positioning mandrel 33 for positioning the camshaft support; the clamp ring 31 is connected with the force application assembly 2, the support body 32 is fixedly installed on the upper surface of the bottom plate 1, the support body 32 is provided with a mandrel hole, the positioning mandrel 33 is arranged in the mandrel hole in a sliding mode, and the positioning mandrel 33, the mandrel hole and the clamp ring 31 are concentric. The utility model discloses a bottom plate 1 can be fixed and carry out the bore hole on ordinary horizontal milling machine, and through clamp ring 31, the tight location of the clamp that realizes work piece 9 that supporter 32 and positioning mandrel 33 three's mutually supporting can be convenient fast, clamp ring 31 has the hole that slightly is greater than the boring cutter external diameter simultaneously, the effect of dodging can be played at the in-process of boring cutter feed, because of the adoption be ordinary horizontal milling machine, thereby use this anchor clamps can effectually reduce the use cost of equipment energy consumption and cutter, thereby reduce the cost of 9 whole processing of work piece, and work piece 9 processingquality precision is higher.

The support body 32 comprises a left support body 321 and a right support body 322, the left support body 321 is used for being matched with the compression ring 31 to fix the workpiece 9 during machining, the right support body 322 is used for supporting and fixing the positioning mandrel 33 after the positioning mandrel 33 is pulled away from the left support body 321, and meanwhile, the positioning mandrel 33 is pushed next time to realize positioning and clamping of the workpiece 9 more conveniently and quickly; left side supporter 321 with right side supporter 322 clearance is located 1 upper surface of bottom plate, clearance setting can be convenient for iron fillings that produce when the bore hole along left supporter 321's dabber hole towards clearance motion, avoid appearing iron fillings jam dabber hole, positioning core axle 33 is close to clamp ring 31 end be equipped with 9 complex bosss 331 of work piece, the external diameter of boss 331 matches with the 9 downthehole internal diameters of unprocessed work piece to the centering of realization work piece 9 that can be quick is pressed from both sides tightly, operates as follows: when the workpiece 9 is clamped, the hole to be processed of the workpiece 9 is only required to be sleeved on the boss 331, and then the workpiece 9 is pressed on the surface of the left support body 321 through the pressing ring 31, so that the clamping and positioning of the workpiece 9 can be realized.

The locating mandrel 33 is provided with a stop dog 332 at the end far away from the clamp ring 31, the stop dog 332 can effectively limit the length of the locating mandrel 33 extending out of the left support body 321, and the situation that the locating mandrel 33 is not immersed in the mandrel hole of the right support body 322 is avoided, so that the retreating operation of the locating mandrel 33 is inconvenient, the stop dog 332 is provided with a handle 4, the locating mandrel 33 is convenient to pump, and the operation is simpler.

The force application assembly 2 comprises a fixing plate 21, an air cylinder 22, a tensioning plate 23, a pull rod 24 and a pressure lever 25, the fixing plate 21 is arranged on the upper surface of the base plate 1, the air cylinder 22 is arranged on the fixing plate 21, the tensioning plate 23 is connected with a piston rod of the air cylinder 22, one end of the pull rod 24 is connected with the tensioning plate 23, the other end of the pull rod 24 is connected with one end of the lock tongue pressure lever 25, and the other end of the pressure lever 25 is connected with the compression ring 31. Arrange the whole structure of application of force subassembly 2 in the right side of centre gripping subassembly 3, the operating space of lathe on the left side can effectual increase, avoids the lathe feed to be obstructed, makes the device operation more smooth.

The number of the pull rods 24 and the number of the compression rods 25 are two, the two pull rods 24 are symmetrically arranged at two ends of the tensioning plate 23, the middle of the tensioning plate 23 is connected with a piston rod of the air cylinder 22, the two compression rods 25 are symmetrically connected with the compression ring 31, and the two compression rods 25 are located on the same central line of the compression ring 31. The two pressure rods 25 and the two pull rods 24 are arranged symmetrically, so that when the pressing ring 31 presses the workpiece 9, the pressure applied to the surface of the workpiece 9 is more uniform, and the workpiece 9 is better attached to the surface of the support body 32.

The compression bar 25 comprises a limiting section 251 and a connecting section 252, the outer diameter of the limiting section 251 is larger than that of the connecting section 252, a notch for installing the compression ring 31 is formed in one side of the connecting end of the positioning section and the compression ring 31, a chamfer is formed in the other side of the connecting end of the limiting section 251 and the compression ring 31, an external thread is formed in the outer surface of the connecting section 252, a mounting hole matched with the outer diameter of the connecting section 252 is formed in the connecting rod 24, and the positioning section penetrates through the mounting hole and is fixed through a nut. The limiting section 251 can limit the length of the connecting end of the compression rod 25 and the compression ring 31, so that the mounting symmetry is better ensured, the force applied by the compression rod 25 to the compression ring 31 is the same, the notch is arranged to ensure that the welding point of the compression ring 31 and the compression rod 25 is firmer, and the chamfer can prevent the boring cutter from contacting with the compression rod 25 to form an avoiding space; and the limiting section 251 and the connecting section 252 form a connecting piece similar to a bolt, so that the connecting section 252 and the pull rod 24 can be conveniently connected and fixed.

The upper surface of the bottom plate 1 is provided with a stand column 5, one end of the stand column 5, far away from the bottom plate 1, is provided with a guide hole, the pull rod 24 penetrates through the guide hole, and two ends of the pull rod 24 are respectively connected with the tensioning plate 23 and the pressure rod 25. The guide holes can ensure the motion track of the pull rod 24, so that the pull rod 24 only horizontally moves on the plane, and further the uniform pressure of the clamp ring 31 on the workpiece 9 can be ensured.

The inboard spacing seat 6 that is equipped with of fixed plate 21, the transversal L shape of personally submitting of spacing seat 6, the minor face of spacing seat 6 with 1 fixed connection of bottom plate, the long limit of spacing seat 6 with fixed plate 21 is connected, the inboard orientation of spacing seat 6 take-up plate 23.

The other two opposite sides of the bottom plate 1 are provided with a plurality of U-shaped fixing holes 7, the U-shaped fixing holes 7 are symmetrical about the central line of the core shaft hole, and the U-shaped fixing holes 7 are distributed near two sides of the supporting body 32. The bottom surface is equipped with guide positioning pin 8 under the bottom plate 1, guide positioning pin 8 symmetry is equipped with two. When the support body is clamped, fixed and bored, the stress position is concentrated near the support body 32, so that the U-shaped fixing holes 7 are distributed on two sides of the support body 32, the fixing effect can be effectively achieved, and the fixing is more firm; the guide positioning pin 8 is arranged, so that the whole fixture can be quickly installed and positioned on the machine tool, and the installation time is reduced.

The utility model discloses use the operating procedure as follows: firstly, the positioning mandrel 33 is pushed into a mandrel hole of the left support body 321 by using the handle 4 and extends out of the mandrel hole, a piston rod passing through the air cylinder 22 extends out to drive the pull rod 24 to move leftwards, the press rod 25 and the pressing ring 31 are far away from the left support body 321, a to-be-bored hole of the workpiece 9 is sleeved on a protruding part of the positioning mandrel 33, then the air cylinder 22 drives the piston rod to contract, the press rod 25 and the pressing ring 31 are driven to move rightwards by the pull rod 24, the surface mandrel hole of the workpiece 9, the pressing ring 31 and the to-be-bored hole of the workpiece 9 are compressed to be concentric, the positioning mandrel 33 is withdrawn from the left support body 321 and is immersed into the right support body 322 by operating the.

The utility model discloses as follows with current processing technology contrast:

item	Hole drawing process	Reaming process	The utility model discloses
				Number of staff	1	1	1
Number of machine tools	1	1	1
				Number of simultaneous working	1	1	1
Problem of processing quality	Out of round	Big hole	Is excellent in
				Product percent of pass	96％	96％	100％
Class output parts/8 hours	400 pieces	200 pieces	350 pieces
				Direct cost of single product	3.5 element/part	3.0 element/part	1.0 element/part

From the above table it follows that: the product processed by the traditional broaching process has the advantages that the manufactured hole is out of round due to elastic deformation, the out-of-round error reaches 0.010-0.015 mm, the quality requirement cannot be met, the processing cost is high, and the yield is high; the product processed by the traditional reaming process has large hole diameter, more defective products, high processing cost and low yield due to the reasons of jumping of a main shaft of a machine tool and the like. Then the clamp is used for clamping the workpiece 9, the workpiece 9 is bored by using a boring process, the out-of-roundness error of the manufactured hole is less than 0.005 mm, the processing cost is low, and the yield is high.

The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. The utility model provides a camshaft support bore hole anchor clamps which characterized in that: the clamping device comprises a bottom plate (1), a force application assembly (2) and a clamping assembly (3), wherein the clamping assembly (3) comprises a pressing ring (31) and a supporting body (32) which are used for pressing the camshaft support, and a positioning mandrel (33) which is used for positioning the camshaft support;

the clamp ring (31) is connected with the force application assembly (2), the support body (32) is fixedly installed on the upper surface of the bottom plate (1), a mandrel hole is formed in the support body (32), the positioning mandrel (33) is slidably arranged in the mandrel hole, and the positioning mandrel (33), the mandrel hole and the clamp ring (31) are concentric.

2. The camshaft support boring clamp of claim 1, wherein: the supporting body (32) comprises a left supporting body (321) and a right supporting body (322), the left supporting body (321) and the right supporting body (322) are arranged on the upper surface of the base plate (1) in a clearance mode, and a boss (331) matched with a workpiece is arranged at the end, close to the compression ring (31), of the positioning mandrel (33).

3. The camshaft support boring clamp of claim 2, wherein: one end, far away from the compression ring (31), of the positioning mandrel (33) is provided with a stop block (332), and a handle (4) is mounted on the stop block (332).

4. The camshaft support boring clamp of claim 1, wherein: force application component (2) include fixed plate (21), cylinder (22), take-up plate (23), pull rod (24) and depression bar (25), fixed plate (21) are located the upper surface of bottom plate (1), cylinder (22) install in on fixed plate (21), take-up plate (23) with the piston rod of cylinder (22) is connected, the one end of pull rod (24) with take-up plate (23) are connected, and the other end of pull rod (24) is connected with the one end of spring bolt depression bar (25), the other end of depression bar (25) with compression ring (31) are connected.

5. The camshaft support boring clamp of claim 4, wherein: the pull rods (24) and the pressing rods (25) are both provided with two pull rods (24) which are symmetrically arranged at two ends of the tensioning plate (23), the middle part of the tensioning plate (23) is connected with a piston rod of the cylinder (22), the pressing rods (25) are symmetrically connected with the pressing ring (31), and the two pressing rods (25) are located on the same central line of the pressing ring (31).

6. The camshaft support boring clamp of claim 4, wherein: the compression bar (25) comprises a limiting section (251) and a connecting section (252), the outer diameter of the limiting section (251) is larger than that of the connecting section (252), one side of the connecting end of the positioning section and the compression ring (31) is provided with a notch for installing the compression ring (31), the other side of the connecting end of the positioning section and the compression ring (31) is provided with a chamfer, the outer surface of the connecting section (252) is provided with an external thread, the pull bar (24) is provided with an installation hole matched with the outer diameter of the connecting section (252), and the connecting section (252) penetrates through the installation hole and is fixed through a nut.

7. The camshaft support boring clamp of claim 4, wherein: the upper surface of the base plate (1) is provided with a stand column (5), one end, far away from the base plate (1), of the stand column (5) is provided with a guide hole, the pull rod (24) penetrates through the guide hole, and two ends of the pull rod (24) are respectively connected with the tensioning plate (23) and the pressing rod (25).

8. The camshaft support boring clamp of claim 4, wherein: fixed plate (21) inboard is equipped with spacing seat (6), the transversal L shape of personally submitting of spacing seat (6), the minor face of spacing seat (6) with bottom plate (1) fixed connection, the long limit of spacing seat (6) with fixed plate (21) are connected, the inboard orientation of spacing seat (6) take-up plate (23).

9. The camshaft holder boring fixture of any one of claims 1 to 8, wherein: the other two opposite sides of the bottom plate (1) are provided with a plurality of U-shaped fixing holes (7), the U-shaped fixing holes (7) are symmetrical about the central line of the core shaft hole, and the U-shaped fixing holes (7) are distributed on two sides of the supporting body (32).

10. The camshaft support boring clamp of claim 9, wherein: the lower end face of the bottom plate (1) is provided with two guide positioning pins (8), and the two guide positioning pins (8) are symmetrically arranged.