CN214349701U

CN214349701U - Clutch hub anchor clamps for car

Info

Publication number: CN214349701U
Application number: CN202023303063.4U
Authority: CN
Inventors: 文光红; 陈毅; 陶中将; 雷术文; 郭耀龙
Original assignee: Chongqing Landai Transmission Machinery Co ltd
Current assignee: Chongqing Landai Transmission Machinery Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-10-08
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses a clutch hub clamp for vehicles, which comprises a chuck provided with claws, and a positioning block which is fixed on the chuck and positioned at the inner side of the claws, wherein one side of the positioning block, which is far away from the chuck, is provided with an expansion sleeve forward, and the axis of the expansion sleeve passes through the circle center of a distribution circle corresponding to the claws; the tool spindle connecting section is characterized by further comprising a pull rod, the pull rod penetrates through the chuck and the positioning block, the pull rod is installed in a sliding guide hole which is formed in the positioning block in the axial direction of the expansion sleeve and is matched with the diameter of the pull rod in diameter, a tensioning frustum matched with the taper hole is arranged at the front end of the pull rod, the taper of the tensioning frustum is the same as that of the taper hole, the diameter of the large end of the tensioning frustum is larger than that of the small end of the taper hole, a abdicating hole for the pull rod to penetrate through is formed in the chuck, and the rear section of the pull rod forms a tool spindle connecting section. The expanding sleeve is used for expanding an inner hole at the rear end of the clutch hub, the clamping jaws are attached to a tooth part of the clutch hub, thin-wall deformation can be effectively avoided, workpiece vibration during machining can be effectively avoided due to the arrangement of the clamping jaws, and machining quality is improved.

Description

Clutch hub anchor clamps for car

Technical Field

The utility model relates to an anchor clamps technical field, specific theory relates to an anchor clamps for clutch hub car.

Background

The clutch is installed between the engine and the transmission and is an assembly directly connected with the engine in the automobile power train, and the clutch is usually installed with a flywheel set of a crankshaft of the engine and is an important part for cutting off and transmitting power between the engine and the automobile power train.

The clutch hub is an important part in a clutch, and as shown in fig. 1, an annular snap spring mounting groove is machined on the inner surface of a thin-wall part on which transmission teeth are arranged. The processing sequence of the clutch hub is that the teeth are processed firstly and then the clamp spring mounting groove is processed, and after the teeth are processed, the thickness from the tooth root to the inner wall is smaller than 2 mm. And the wall thickness is too small, so that the clamping difficulty in machining is increased. If the external tooth part is directly clamped through the three-jaw chuck, the clamping force can cause the thin wall to deform, and if other parts of the clutch hub are clamped, the thin wall part is influenced by the cutting force in the cutting process to generate vibration, so that part machining fails. And considering that the length of the cylindrical surface which is far away from the rear end of the tooth and can be clamped is shorter, the wall thickness is smaller, and the clutch hub is not suitable for clamping.

In view of this, a technical problem to be solved by those skilled in the art is how to provide an automotive clamp for a clutch hub to meet the turning and clamping requirements of the clutch hub, avoid deformation of a thin wall on the clutch hub, and effectively prevent vibration generated during turning.

SUMMERY OF THE UTILITY MODEL

The invention of the utility model aims to: the clamp for the clutch hub vehicle is used for meeting the turning and clamping requirements of the clutch hub, avoiding the deformation of a thin wall on the clutch hub and effectively preventing the vibration generated in the turning process.

In order to realize the purpose, the utility model discloses a technical scheme be:

a clutch hub clamp for a vehicle comprises a chuck provided with clamping jaws and positioning blocks fixed on the chuck and positioned on the inner sides of the clamping jaws, wherein an expansion sleeve is arranged forwards on one side of each positioning block, which is far away from the chuck, the expansion sleeve is coaxially provided with a taper hole, the cross-sectional area of the taper hole is gradually reduced backwards, a plurality of slits are uniformly arranged on the side wall of the expansion sleeve at intervals along the circumferential direction of the expansion sleeve, and the slits extend along the axial direction of the expansion sleeve; still include the pull rod, the pull rod passes the chuck with the locating piece, the pull rod is installed follow on the locating piece expand set axial set up and the diameter with in the sliding guide hole that the pull rod diameter matches, the front end of pull rod be provided with the taper hole complex rise the frustum, rise the frustum with the taper of taper hole is the same, the diameter of rising the frustum main aspects of rising is greater than the diameter of taper hole tip, set up the confession on the chuck the hole of stepping down that the pull rod passed.

Therefore, the expansion sleeve is used for tensioning an inner hole at the rear end of the clutch hub, and the front side face of the positioning block is used for axially positioning the clutch hub. The clamping jaws of the chuck are adjusted to enable the clamping jaws of the chuck to be attached to the tooth portion of the clutch hub, gaps are reserved between the clamping jaws and the tooth portion of the clutch hub, the gaps are adjusted according to machining requirements, and the gap setting is small and cannot exceed 10 threads. The clamping mode can effectively avoid the deformation of the thin wall caused by the direct clamping of the clamping jaw, the vibration of a workpiece can be effectively avoided when the clamping jaw is arranged to process a clamp spring groove, and the processing qualified rate of parts is improved.

Preferably, the positioning block is provided with a limiting hole, the limiting hole is arranged between the sliding guide hole and the taper hole, the limiting hole is coaxially connected with the taper hole, the diameter of the limiting hole is larger than that of the small end of the tensioning frustum and smaller than that of the large end of the tensioning frustum, the diameter of the sliding guide hole is smaller than that of the small end of the tensioning frustum, and the depth of the limiting hole is smaller than the height of the tensioning frustum.

Like this, tight frustum that rises offsets with spacing hole bottom and realizes axial spacing, can effectively control the big size that rises of expanding sleeve like this, the degree that can effectual control rises like this, avoids damaging the work piece or the centre gripping not tight.

Preferably, the positioning block is provided with a yielding groove on one side of the expansion sleeve, the yielding groove is distributed in an annular shape and is coaxially arranged with the expansion sleeve, and the yielding groove is arranged close to the bottom of the expansion sleeve.

In this way, the relief groove can receive the protrusion of the clutch hub bottom. The outer part of the side surface of the positioning block is used for supporting and positioning the positioning block, the supporting area is larger, and good support can be provided when an inner hole and the bottom surface of the bottom of the clutch hub are machined. The part of the positioning surface needing to be processed can be reduced, and the processing amount and the processing difficulty are reduced.

Preferably, a side wall of the abdicating groove far away from the expansion sleeve is provided with a hole or a slot which radially penetrates through the positioning block along the abdicating groove.

Thus, the arrangement of the hole or the slit can be used for exhausting from the clutch hub to the positioning block in the process of clamping.

Preferably, the chuck is a three-jaw chuck.

Like this, the aforesaid specifically provides a chuck type, and the three-jaw is convenient to be acquireed, and the timing is convenient, and it is convenient to adapt to.

Drawings

FIG. 1 is a schematic view of a clutch hub of the prior art;

fig. 2 is a schematic view of an automotive clamp for a clutch hub, according to the present invention, wherein the clutch hub is clamped on the clamp;

FIG. 3 is a schematic view of the positioning block of FIG. 2;

fig. 4 is a schematic structural view of the tie rod of fig. 2.

The labels in the figure are: the device comprises a chuck 1, a jaw 101, a positioning block 2, an expansion sleeve 201, a limiting hole 202, a abdicating groove 203, a sliding guide hole 204, a pull rod 3 and a tensioning frustum 301.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

As shown in fig. 1-4, the utility model discloses an automobile-used anchor clamps of clutch hub, including the chuck 1 that is provided with jack catch 101, fix on the chuck 1 and be located a plurality of locating piece 2 of the inboard of jack catch 101, one side that locating piece 2 kept away from chuck 1 is provided with the expansion sleeve 201 forward, the axis of expansion sleeve 201 passes a plurality of the distribution circle centers that the jack catch 101 corresponds, coaxial being provided with the taper hole on the expansion sleeve 201, taper hole cross-sectional area reduces to the gradual change backward, be provided with a plurality of cracks along the even interval of expansion sleeve 201 circumference on the lateral wall of expansion sleeve 201, the crack is along the axial extension of expansion sleeve 201; still include pull rod 3, pull rod 3 passes chuck 1 with locating piece 2, pull rod 3 is installed follow on the locating piece 2 expand set 101 axial set up and diameter with in the sliding guide hole 204 that 3 diameters of pull rod match, the front end of pull rod 3 be provided with taper hole complex tight frustum 301 that rises, tight frustum 301 with the tapering of taper hole is the same, the diameter that rises frustum 301 main aspects is greater than the diameter of taper hole tip, set up the confession on the chuck 1 the hole of stepping down that pull rod 3 passed, 3 back ends of pull rod constitute lathe main shaft linkage segment.

In this embodiment, the positioning block 2 is provided with a limiting hole 202, the limiting hole 202 is disposed in the sliding guide hole 204 and between the taper holes, the limiting hole 202 is coaxially connected with the taper holes, the diameter of the limiting hole 202 is greater than the diameter of the small end of the tension frustum 301 and is smaller than the diameter of the large end of the tension frustum 301, the diameter of the sliding guide hole 204 is smaller than the diameter of the small end of the tension frustum 301, and the depth of the limiting hole 202 is smaller than the height of the tension frustum 301.

In this embodiment, set up on the locating piece 2 be provided with the groove of stepping down 203 on one side of the cover 201 that expands, step down the groove 203 be annular distribute with the coaxial setting of cover 201 expands, the groove of stepping down 203 is close to the bottom setting of the cover 201 that expands.

In this embodiment, the abdicating groove 203 is far away from one side wall of the expansion sleeve 201, and a hole or a slit which radially penetrates through the positioning block 2 along the abdicating groove 203 is arranged.

In the present embodiment, the chuck 1 is a three-jaw chuck.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. The clamp for the clutch hub car is characterized by comprising a chuck (1) provided with clamping jaws (101), and positioning blocks (2) fixed on the chuck (1) and positioned on the inner sides of the clamping jaws (101), wherein one side, far away from the chuck (1), of each positioning block (2) is provided with an expansion sleeve (201) forwards, the expansion sleeves (201) are coaxially provided with taper holes, the cross-sectional areas of the taper holes gradually decrease backwards, a plurality of slots are uniformly arranged on the side wall of each expansion sleeve (201) at intervals along the circumferential direction of each expansion sleeve (201), and the slots extend along the axial direction of each expansion sleeve (201); still include pull rod (3), pull rod (3) pass chuck (1) with locating piece (2), install pull rod (3) follow on locating piece (2) expand set (201) axial set up and the diameter with in slide guide hole (204) that pull rod (3) diameter matches, the front end of pull rod (3) be provided with taper hole complex tight frustum (301) that rises, tight frustum (301) with the tapering of taper hole is the same, the diameter of tight frustum (301) the main aspects of rising is greater than the diameter of taper hole tip, set up the confession on chuck (1) the hole of stepping down that pull rod (3) passed.

2. The clutch hub fixture as claimed in claim 1, wherein a limiting hole (202) is formed in the positioning block (2), the limiting hole (202) is formed between the sliding guide hole (204) and the taper hole, the limiting hole (202) is coaxially connected with the taper hole, the diameter of the limiting hole (202) is larger than the diameter of the small end of the tensioning frustum (301) and smaller than the diameter of the large end of the tensioning frustum (301), the diameter of the sliding guide hole (204) is smaller than the diameter of the small end of the tensioning frustum (301), and the depth of the limiting hole (202) is smaller than the height of the tensioning frustum (301).

3. The clamp for the clutch hub of claim 1, wherein a yielding groove (203) is formed in one side, provided with the expansion sleeve (201), of the positioning block (2), the yielding groove (203) is distributed in an annular shape and is arranged coaxially with the expansion sleeve (201), and the yielding groove (203) is arranged close to the bottom of the expansion sleeve (201).

4. The clamp for the clutch hub of claim 3, wherein a side wall of the abdicating groove (203) far away from the expansion sleeve (201) is provided with a hole or a slit which radially penetrates through the positioning block (2) along the abdicating groove (203).

5. A clutch hub clamp according to claim 1, characterized in that the chuck (1) is a three-jaw chuck.