CN213004648U

CN213004648U - Fixture for grinding stepped shaft

Info

Publication number: CN213004648U
Application number: CN202021680837.2U
Authority: CN
Inventors: 李广娟
Original assignee: Jiangsu Province Xuzhou Technician Institute
Current assignee: Jiangsu Province Xuzhou Technician Institute
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2021-04-20
Anticipated expiration: 2030-08-13

Abstract

The utility model relates to an anchor clamps technical field specifically is an anchor clamps are used in stepped shaft grinding, including PMKD, the inside horizontal fixture that is provided with of PMKD, horizontal fixture includes the spout, the inside spout of having seted up of PMKD, and the inside left and right sides block of spout has all the slider, the PMKD intermediate position is fixed with the connecting block through two sets of first hexagonal screw, and the threaded rod about both ends divide extend on two sets of first fixed blocks and pass through bearing swing joint, two sets of with first fixed block respectively the slider top has all linked firmly horizontal clamp splice through two sets of third hexagonal screw, and is provided with vertical fixture on the PMKD. The utility model discloses brought and made the step shaft be in parallel state with the workstation after the centre gripping for more even when worker people grind, convenient to use has still brought and has carried out vertical centre gripping to the step shaft, thereby the people of being convenient for process the top and the bottom of step shaft.

Description

Fixture for grinding stepped shaft

Technical Field

The utility model relates to an anchor clamps technical field specifically is an anchor clamps are used in stepped shaft grinding.

Background

The stepped shaft sleeve is a method for axially positioning the bearing, is particularly suitable for precise bearing configuration, has smaller jump and provides higher precision compared with a locking nut with threads, is usually formed by turning, and the turned surface needs to be polished to be smoother, and can be clamped by a clamp when being ground, so that the conventional clamp is continuously innovated and developed, and the conventional clamp basically meets the requirements of people, but still has some problems.

Current step shaft anchor clamps generally all adopt the anchor clamps similar to bench vice when the centre gripping, be the fixture of rectangle splint for both sides promptly, can't guarantee behind the step shaft centre gripping and the workstation is in parallel state, the area of contact of step shaft and anchor clamps during the centre gripping is less to when the step shaft receives great external force, can make the position of step shaft take place the skew, it is inhomogeneous to polish the step shaft during the feasible grinding, influences normal use.

The existing clamp only can transversely clamp the stepped shaft, when the stepped shaft is short and large in diameter and the two ends of the stepped shaft are polished, the traditional clamp is not provided with a spare clamp head, so that the short thick clamp is often troublesome and inconvenient to clamp the top end and the bottom end of a workpiece, and is troublesome and inconvenient to use.

SUMMERY OF THE UTILITY MODEL

In order to overcome the technical problem, the utility model aims to provide an anchor clamps are used in stepped shaft grinding to can't guarantee that the stepped shaft centre gripping back and workstation are in parallel state to that the proposition is in solving above-mentioned background art, because the unhomogeneous of centre gripping, probably will step shaft uneven problem of polishing when the grinding.

In order to achieve the above object, the utility model provides a following technical scheme: a fixture for grinding stepped shafts comprises a fixed base plate, wherein a transverse clamping mechanism is arranged inside the fixed base plate and comprises a sliding groove, a sliding block, a first hexagonal screw, a connecting block, a threaded rod, a second hexagonal screw, a first fixed block, a rotating rod, a first fixed block and a transverse clamping block, the sliding groove is formed inside the fixed base plate, the sliding block is clamped on the left side and the right side inside the sliding groove, the connecting block is fixed at the middle position of the fixed base plate through two groups of first hexagonal screws, the threaded rod is movably connected with the middle position of the connecting block through a bearing, the two groups of first fixed blocks are fixedly connected with the left side and the right side of the fixed base plate through two groups of second hexagonal screws respectively, the left end and the right end of the threaded rod extend onto the two groups of first fixed blocks respectively and are movably connected with the first fixed blocks through bearings, the right, and the threaded rod right-hand member has linked firmly the dwang, and is two sets of the slider top all has linked firmly horizontal clamp splice through two sets of third hexagonal screws, and is provided with vertical fixture on the PMKD.

Preferably, the vertical clamping mechanism comprises a first insertion groove, insertion plates, vertical clamping blocks, second fixed blocks, limiting grooves, first connecting plates, fixed rods, movable rods and springs, the first insertion grooves are formed in the front and rear sides of the two groups of horizontal clamping blocks, the two groups of insertion plates are inserted into the left and right sides of the front end of the fixing bottom plate, the vertical clamping blocks are fixedly connected to the front ends of the four groups of insertion plates, the second fixed blocks are fixedly connected to the middle parts of the rear ends of the two groups of vertical clamping blocks, the first connecting plates are fixedly connected to the ends of the two groups of horizontal clamping blocks far away from each other, the fixed rods are fixedly connected to the left and right ends of the two groups of first connecting plates, the movable rods are sleeved on the sides of the four groups of fixed rods far away from the first connecting plates, the springs are sleeved on the sides of the four groups of fixed rods near the first connecting plates, and the ends of, the other end of the spring is fixedly connected with the movable rod.

Preferably, a placing groove is formed in the fixing bottom plate behind the sliding groove, a sleeving rod is inserted into the placing groove, and a second insertion groove is formed in the sleeving rod.

Preferably, the front end and the rear end of the fixed bottom plate are fixedly connected with two groups of second connecting plates, and fixing holes are formed in the four groups of second connecting plates.

Preferably, the ends of the four groups of movable rods, which are far away from each other, are designed in a sliding mode.

Preferably, the four groups of the insertion plates are all provided with limiting grooves, and the limiting grooves are matched with the movable rods.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the clamp for grinding the stepped shaft is provided with the transverse clamping blocks and the rotating rod, when the stepped shaft is required to be clamped, the fixed bottom plate is fixedly connected on the workbench, the clamp is placed between the two groups of transverse clamping blocks, the rotating rod is rotated, when the rotating rod is rotated, the two groups of transverse clamping blocks are close to each other, so that clamping is completed, the design avoids the problem that when the conventional stepped shaft clamp is used for clamping, a clamp similar to a bench vice is generally adopted, namely a clamping mechanism with rectangular clamping plates on two sides is adopted, the condition that the stepped shaft is parallel to the workbench after being clamped cannot be ensured, the contact area between the stepped shaft and the clamp is small during clamping, when the stepped shaft is subjected to larger external force, the position of the stepped shaft can be deviated, the stepped shaft can be ground unevenly during grinding, the problem of influencing normal use is solved, and the condition that the stepped shaft is parallel to the workbench after being clamped is brought, meanwhile, the clamping stepped shaft and the fixture have larger relief area, so that the clamping is more stable, and the position of the stepped shaft cannot deviate when external force is applied, so that workers grind more uniformly, the use is convenient, and the practicability of the device is improved;

2. the clamp for grinding the stepped shaft is provided, when the stepped shaft needs to be vertically clamped, only two groups of vertical clamping blocks at two sides need to be taken, the inserting plates on the two groups of vertical clamping blocks are respectively inserted into the two groups of transverse clamping blocks, and the limiting grooves are clamped with the movable rods, the design avoids the problem that the conventional clamp only can transversely clamp the stepped shaft, when the stepped shaft is short and has a large diameter and two ends of the stepped shaft need to be polished, the conventional clamp is not provided with spare clamp heads, so that the short and thick clamps are troublesome and inconvenient to clamp the top end and the bottom end of a workpiece and are troublesome to use, the replacement of a chuck can be completed only by inserting the clamp heads, the stepped shaft with the large diameter can be firmly vertically clamped, the clamp has stronger applicability and is convenient to operate when the chuck is replaced, further increasing the practicality and convenience of the device.

Drawings

Fig. 1 is a schematic diagram of a left side overlooking three-dimensional structure of the present invention;

fig. 2 is a schematic view of the left side bottom perspective structure of the present invention;

FIG. 3 is a schematic view of a partial structure of the vertical clamping mechanism of FIG. 1 according to the present invention;

fig. 4 is an enlarged schematic view of the three-dimensional structure of the first connecting plate, the fixed rod, the movable rod and the spring of the present invention.

In the figure: 1. fixing the bottom plate; 2. a transverse clamping mechanism; 211. a chute; 212. a slider; 213. a first hexagonal screw; 214. connecting blocks; 215. a threaded rod; 216. a second hexagonal screw; 217. a first fixed block; 218. rotating the rod; 219. a third hexagonal screw; 220. a transverse clamping block; 3. a vertical clamping mechanism; 311. A first insertion slot; 312. an insert plate; 313. a vertical clamping block; 314. a second fixed block; 315. a limiting groove; 316. a first connecting plate; 317. fixing the rod; 318. a movable rod; 319. a spring; 411. a placement groove; 412. sleeving the rod; 413. a second insertion slot; 511. a second connecting plate; 512. and (7) fixing holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides an embodiment: a fixture for grinding a stepped shaft comprises a fixed base plate 1, a transverse clamping mechanism 2 is arranged inside the fixed base plate 1, the transverse clamping mechanism 2 comprises a sliding groove 211, a sliding block 212, a first hexagonal screw 213, a connecting block 214, a threaded rod 215, a second hexagonal screw 216, a first fixing block 217, a rotating rod 218, a first fixing block 217 and a transverse clamping block 220, the sliding groove 211 is arranged inside the fixed base plate 1, the sliding block 212 is clamped on the left side and the right side inside the sliding groove 211, the connecting block 214 is fixed at the middle position of the fixed base plate 1 through two groups of first hexagonal screws 213, the threaded rod 215 is movably connected at the middle position of the connecting block 214 through a bearing, the thread directions of the left side and the right side of the threaded rod 215 are opposite, the two groups of first fixing blocks 217 are fixedly connected on the left side and the right side of the fixed base plate 1 through two groups of second hexagonal screws 216 respectively, and the left end and the, first fixed block 217 is run through on threaded rod 215 right side and extend to the outside, and threaded rod 215 right-hand member has linked firmly dwang 218, two sets of slider 212 tops have all linked firmly horizontal clamp splice 220 through two sets of third hexagonal screws 219, and be provided with vertical fixture 3 on PMKD 1, adopt this kind of design to be convenient for make the device centre gripping after, make step shaft and device be in parallel position, thereby be convenient for subsequent grinding, be convenient for people's operation and use, adopt first hexagonal screw 213 simultaneously, the mode of linking firmly of second hexagonal screw 216 and third hexagonal screw 219, the change that the later stage part of being convenient for damaged.

The vertical clamping mechanism 3 comprises a first insertion slot 311, insertion plates 312, vertical clamping blocks 313, a second fixed block 314, a limiting slot 315, a first connecting plate 316, fixed rods 317, movable rods 318 and springs 319, the first insertion slot 311 is arranged on the front side and the rear side of each of the two groups of transverse clamping blocks 220, the two groups of insertion plates 312 are inserted on the left side and the right side of the front end of the fixed base plate 1, the vertical clamping blocks 313 are fixedly connected with the front ends of the four groups of insertion plates 312, the second fixed blocks 314 are fixedly connected with the middle parts of the rear ends of the two groups of vertical clamping blocks 313, the first connecting plate 316 is fixedly connected with the ends of the two groups of transverse clamping blocks 220 far away from each other, the fixed rods 317 are fixedly connected with the left ends and the right ends of the two groups of first connecting plates 316, the movable rods 318 are sleeved on the sides of the four groups of fixed rods 317 far away from the first connecting plate 316, the springs 319 are sleeved on the sides of, the other end of the spring 319 is fixedly connected to the movable rod 318, and this design facilitates the device to clamp the vertical stepped shaft, thereby facilitating the processing of the top and bottom ends of the stepped shaft by people.

The fixed baseplate 1 at the rear of the sliding groove 211 is provided with the placing groove 411, the placing groove 411 is internally inserted with the sleeve installing rod 412, the sleeve installing rod 412 is internally provided with the second insertion groove 413, and when people use the design to clamp the fixed baseplate, the rotating rod 218 is rotated difficultly, the second insertion groove 413 can be sleeved on one side of the rotating rod 218, and the rotating rod 218 is rotated once, so that the clamping is firmer, and people can operate the fixed baseplate conveniently.

Two groups of second connecting plates 511 are fixedly connected to the front end and the rear end of the fixing bottom plate 1, fixing holes 512 are formed in the four groups of second connecting plates 511, and the fixing bottom plate 1 can be conveniently fixed on a workbench and is convenient for subsequent clamping operation of people due to the design.

The ends of the four sets of movable rods 318 away from each other are designed to be in a sliding slope, which facilitates the smooth contact between the insertion plate 312 and the movable rods 318.

The four groups of insertion plates 312 are all provided with limiting grooves 315, the limiting grooves 315 are matched with the movable rods 318, and the vertical clamping blocks 313 are limited conveniently by adopting the design, so that the installation is more stable.

The working principle is as follows: when the step shaft centre gripping is carried out to needs, at first place the step shaft between two sets of horizontal clamp splice 220, at rotation dwang 218, when rotating dwang 218, because threaded rod 215 both sides screw thread opposite direction to and the limiting displacement of spout 211, can make two sets of horizontal clamp splice 220 be close to each other, be close to each other when two sets of horizontal clamp splice 220 and tightly the butt can accomplish fixedly with the step shaft.

When the vertical centre gripping of step shaft needs to be carried out, only need to pull two sets of vertical clamp splice 313 forward, take off two sets of vertical clamp splice 313 from PMKD 1, insert on inserting board 312 on two sets of vertical clamp splice 313 and insert respectively on the first insertion groove 311 on two sets of horizontal clamp splice 220, when inserting board 312 and insert on first insertion groove 311, insert board 312 and can with two sets of movable rod 318 butt, thereby make two sets of spring 319 compress, when spacing groove 315 reachs two sets of movable rod 318 both sides, spring 319 can resume deformation, thereby make spring 319 get into inside the spacing groove 315, accomplish fixedly, at time rotate dwang 218, and will vertically place and accomplish the centre gripping between two sets of vertical clamp splice 313.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a anchor clamps are used in stepped shaft grinding, includes PMKD (1), its characterized in that: the fixing base plate is characterized in that a transverse clamping mechanism (2) is arranged inside the fixing base plate (1), the transverse clamping mechanism (2) comprises a sliding groove (211), a sliding block (212), a first hexagonal screw (213), a connecting block (214), a threaded rod (215), a second hexagonal screw (216), a first fixed block (217), a rotating rod (218), a first fixed block (217) and a transverse clamping block (220), the sliding groove (211) is formed inside the fixing base plate (1), the sliding block (212) is clamped on the left side and the right side inside the sliding groove (211), the connecting block (214) is fixed at the middle position of the fixing base plate (1) through the two groups of first hexagonal screws (213), the threaded rod (215) is movably connected at the middle position of the connecting block (214), the two groups of first hexagonal fixed blocks (217) are fixedly connected on the left side and the right side of the fixing base plate (1, and both ends divide about threaded rod (215) extend on two sets of first fixed block (217) and pass through bearing swing joint with first fixed block (217) respectively, threaded rod (215) right side runs through first fixed block (217) and extends to the outside, and threaded rod (215) right-hand member has linked firmly dwang (218), and is two sets of slider (212) top has all linked firmly horizontal clamp splice (220) through two sets of third hexagonal screw (219), and is provided with vertical fixture (3) on PMKD (1).

2. The jig for grinding a stepped shaft according to claim 1, characterized in that: the vertical clamping mechanism (3) comprises a first insertion groove (311), insertion plates (312), vertical clamping blocks (313), a second fixed block (314), a limiting groove (315), a first connecting plate (316), fixing rods (317), movable rods (318) and springs (319), the first insertion groove (311) is formed in the front side and the rear side of each of the two groups of transverse clamping blocks (220), the two groups of insertion plates (312) are inserted into the left side and the right side of the front end of the fixed base plate (1), the vertical clamping blocks (313) are fixedly connected to the front ends of the four groups of insertion plates (312), the second fixed block (314) is fixedly connected to the middle portions of the rear ends of the two groups of vertical clamping blocks (313), the first connecting plate (316) is fixedly connected to one end, far away from each other, of the two groups of transverse clamping blocks (220), the fixing rods (317) are fixedly connected to the left end and the right end of the two groups of first connecting plates, and the movable rods (318) are sleeved on one side, the four groups of the fixing rods (317) are sleeved with springs (319) at one sides, close to the first connecting plate (316), of the outsides of the fixing rods (317), the ends, close to the first connecting plate (316), of the springs (319) are fixedly connected to the first connecting plate (316), and the other ends of the springs (319) are fixedly connected to the movable rods (318).

3. The jig for grinding a stepped shaft according to claim 1, characterized in that: a placing groove (411) is formed in the fixed bottom plate (1) behind the sliding groove (211), a sleeving rod (412) is inserted into the placing groove (411), and a second insertion groove (413) is formed in the sleeving rod (412).

4. The jig for grinding a stepped shaft according to claim 1, characterized in that: two groups of second connecting plates (511) are fixedly connected to the front end and the rear end of the fixed bottom plate (1), and fixing holes (512) are formed in the four groups of second connecting plates (511).

5. The jig for grinding a stepped shaft according to claim 2, characterized in that: the ends of the four groups of movable rods (318) far away from each other are designed in a sliding mode.

6. The jig for grinding a stepped shaft according to claim 2, characterized in that: the four groups of insertion plates (312) are all provided with limit grooves (315), and the limit grooves (315) are matched with the movable rods (318).