CN215788654U

CN215788654U - Hole grinding machine

Info

Publication number: CN215788654U
Application number: CN202121129890.8U
Authority: CN
Inventors: 李凤国
Original assignee: Hubei Jijia Electromechanical Equipment Co ltd
Current assignee: Hubei Jijia Electromechanical Equipment Co ltd
Priority date: 2021-05-25
Filing date: 2021-05-25
Publication date: 2022-02-11
Anticipated expiration: 2031-05-25

Abstract

The utility model relates to the technical field of continuous casting roller sleeve hole grinding equipment, and discloses a hole grinding machine which comprises a base, wherein a grinding head assembly, a positioning assembly and a feeding assembly are arranged on the base, the grinding head assembly is fixed on the base, the positioning assembly is fixed on the feeding assembly, the feeding assembly is connected with the base through a transverse feeding mechanism and a longitudinal feeding mechanism, the grinding head assembly comprises a flexible grinding head and a rotary driving part for driving the flexible grinding head to rotate, the flexible grinding head is driven by the rotary driving part to do high-speed rotary motion to grind holes of a workpiece to be machined on the positioning assembly, when the hole grinding machine works, the positioning assembly drives the workpiece to perform transverse and longitudinal feeding, then the workpiece is manually rotated to realize the grinding machining of an inner hole of the workpiece, the positioning assembly is positioned through a positioning roller and a supporting bearing, the workpiece is borne on the positioning bearing and is easier to rotate, manpower can be saved greatly, the grinding quantity and the grinding speed can be well controlled by the feeding assembly, and the processing precision of products is greatly improved.

Description

Hole grinding machine

Technical Field

The utility model relates to the technical field of continuous casting roller sleeve hole grinding equipment, in particular to a hole grinding machine.

Background

The continuous casting rolls are used in slab continuous casting machines in the steelmaking industry, a middle hollow mandrel is mostly adopted in the design form of the continuous casting rolls in the bending section, the fan-shaped section and the horizontal section of the continuous casting machine, cooling water is introduced into the mandrel to prevent the continuous casting rolls from being thermally deformed and damaged due to long-time contact with high-temperature slabs, in order to reduce the production and maintenance cost of the continuous casting rolls, a roll sleeve is installed outside the working section of the mandrel, and the roll sleeve and the mandrel are in a small-gap fit form of key connection and G7/G7 or H7/H6, so that the requirements on the inner diameter size and the roughness of the roll sleeve are high, and the inner hole surface of the roll sleeve can be ground during the existing roll sleeve processing.

Because the roll sleeve of the continuous casting roll is of a cylindrical structure with two penetrating ends and is large in size, the roll sleeve is not easy to clamp and position when a general machine tool is used for grinding and processing the inner control of the roll sleeve, and the operation is laborious.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a hole grinding machine which has the advantages of high machining precision, labor saving, long service life, good universality and the like.

The technical purpose of the utility model is realized by the following technical scheme:

a hole grinding machine comprises a base, wherein a grinding head assembly, a positioning assembly and a feeding assembly are arranged on the base, the grinding head assembly is fixed on the base, the positioning assembly is fixed on the feeding assembly, and the feeding assembly is connected with the base through a transverse feeding mechanism and a longitudinal feeding mechanism;

the grinding head assembly comprises a flexible grinding head and a rotary driving part for driving the flexible grinding head to rotate, and the flexible grinding head is connected with the rotary driving part and then fixed on the base;

the positioning assembly comprises a support frame and two positioning rollers arranged on the support frame, the two positioning rollers are arranged in parallel, and a plurality of supporting bearings used for supporting workpieces are arranged on the positioning rollers.

By adopting the technical scheme, the flexible grinding head in the grinding head assembly is driven by the rotary driving part to perform high-speed rotary motion, the workpiece to be machined is positioned by the positioning assembly, in operation, the positioning assembly drives the workpiece to realize transverse and longitudinal feeding through the feeding assembly, then the workpiece is manually rotated to realize grinding machining of the inner hole of the workpiece, in positioning, the workpiece is only required to be placed on the supporting bearing on the positioning roller, the workpiece is borne on the positioning bearing and is more easily rotated, manpower can be greatly saved, the feeding assembly can well control the grinding amount and the grinding speed, and the machining precision of the product is greatly improved.

The utility model is further provided with: the flexible bistrique includes: including pole portion, flexible spacer and abrasive paper cover, the one end and the rotation driving portion of pole portion are connected, the other end and the flexible spacer of pole portion are connected, the abrasive paper ways is established on the outer wall of flexible spacer.

Through adopting above-mentioned technical scheme, flexible spacer sleeve and abrasive paper cover are established in proper order and are established in pole portion and form flexible bistrique, rotate through rotation drive portion drive pole portion and drive flexible bistrique and carry out abrasive machining to the work piece, because flexible spacer sleeve is nylon or rubber material, has certain elasticity, consequently the impact of buffering work piece to the bistrique that the flexible bistrique that is formed by flexible spacer sleeve can be fine at the in-process with the work piece contact for flexible bistrique is difficult to be damaged, its life is longer.

The utility model is further provided with: the rod part is connected with the flexible spacer bush through a locking nut.

Through adopting above-mentioned technical scheme, flexible spacer sleeve establishes and fixes a position through lock nut after pole portion, lock nut can prevent on the one hand that flexible spacer sleeve from the pole portion drops, lock nut on the other hand still can extrude flexible spacer sleeve along the axial through the terminal surface, make flexible spacer sleeve receive axial extrusion force, its surface can outwards bulge after flexible spacer sleeve receives the effect of axial extrusion force, and then prop the abrasive paper cover of cover outside tightly, thereby can prevent effectively that the abrasive paper cover from dropping from flexible spacer sleeve, the effect of polishing has further been guaranteed, and when the abrasive paper cover needs to be changed, locking nut directly unscrews, its surface can resume to initial condition again after flexible spacer sleeve has lost the axial extrusion force, consequently, the abrasive paper cover is taken off more easily, it is more convenient to change the operation.

The utility model is further provided with: the flexible spacer sleeve is characterized in that one end, connected with the flexible spacer sleeve, of the rod portion is sequentially provided with a limiting surface, a tensioning section, a transition section and a locking section, the limiting surface is a surface, connected with the tensioning section, of the rod portion, the tensioning section, the transition section and the locking section are coaxial and are sequentially connected, the diameter of the tensioning section is larger than that of the transition section and the locking section, and the locking section is provided with external threads connected with a locking nut.

Through adopting above-mentioned technical scheme, flexible spacer overlaps in proper order and establishes at the tight section that rises behind locking section and changeover portion, carries on spacingly to the one end of flexible spacer through spacing face for the other end of flexible spacer can not remove with the one end of spacing face contact when receiving axial extrusion force, therefore the middle part of flexible spacer can outwards bulge, the changeover portion is used for the tight section that rises and is connected between the locking section, the axial extrusion and the locking of flexible spacer are realized to locking section and lock nut threaded connection.

The utility model is further provided with: the flexible spacer sleeve is of a hollow structure, a first positioning surface and a second positioning surface are arranged at two ends of the flexible spacer sleeve respectively, through holes matched with the tensioning sections are formed in the first positioning surface and the second positioning surface respectively, the through holes are communicated with an inner cavity of the flexible spacer sleeve, and the axial size of the flexible spacer sleeve is larger than that of the tensioning sections.

Through adopting above-mentioned technical scheme, establish flexible spacer into hollow structure, make flexible spacer receive the more easy tensioning that arches in middle part and realize the abrasive paper cover of tip axial extrusion back, first locating surface and second locating surface are used for bearing spacing face and lock nut's axial extrusion force on the one hand, on the other hand can regard as the connecting portion between flexible spacer and the pole portion, make the internal face contactless of pole portion and flexible spacer, flexible spacer arches the deformation more easily, in addition, establish flexible spacer into hollow structure and also can save raw materials, therefore, the cost is reduced, double-serve.

The utility model is further provided with: the abrasive paper sleeve is of a cylindrical structure, and a gap is reserved between the inner wall of the abrasive paper sleeve and the outer wall of the flexible spacer sleeve after the abrasive paper sleeve is sleeved on the flexible spacer sleeve.

Through adopting above-mentioned technical scheme, have the clearance between the outer wall of the inner wall of abrasive paper cover and flexible spacer for the cover that the abrasive paper cover can be convenient is established on flexible spacer or is taken off from flexible spacer, and consequently the abrasive paper cover is changed the operation more convenient.

The utility model is further provided with: and a washer is further arranged between the locking nut and the flexible spacer bush, and the diameter of the washer is larger than that of the locking nut.

Through adopting above-mentioned technical scheme, the atress area of flexible spacer tip can effectively be increased in the effect of packing ring for flexible spacer tip atress is more even, and the atress direction is all the time along the axis direction, prevents to cause flexible spacer tip damage or stress surface indent because of lock nut tip is not flat or stress area undersize, thereby leads to the unable outside bulging of flexible spacer, thereby can't prop tightly the abrasive paper cover of cover in the outside, the setting up of packing ring has further improved the reliability of flexible bistrique.

The utility model is further provided with: the positioning device is characterized in that a positioning strip for axially positioning a workpiece and a positioning roller arranged on the positioning strip are arranged in the front of and at the back of the support frame, the positioning strip is fixed on the support frame, a plurality of positioning holes are formed in the positioning strip, and the positioning roller is connected with the positioning holes in the positioning strip through a roller rotating shaft.

Through adopting above-mentioned technical scheme, the location gyro wheel is used for carrying out axial positioning to the work piece, through set up a plurality of locating holes on the location strip, can realize the location of unidimensional work piece, has further improved the commonality of device.

The utility model is further provided with: the transverse feeding mechanism comprises a transverse feeding screw rod and a screw rod motor, the transverse feeding screw rod is located on the base, the screw rod motor drives the transverse feeding screw rod to rotate, the transverse feeding screw rod is parallel to the axis of the rod part, two ends of the transverse feeding screw rod are respectively installed on the base through bearing seats, and one end of the transverse feeding screw rod is connected with the screw rod motor.

The horizontal feed screw is provided with a sliding block, the sliding block is in threaded connection with the horizontal feed screw, two ends of the sliding block are in sliding connection with horizontal sliding rails on the base, the vertical feed mechanism is installed on the sliding block and comprises a vertical feed screw perpendicular to the horizontal feed screw, the vertical feed screw is installed on the sliding block through a bearing seat, one end of the vertical feed screw is provided with an adjusting hand wheel, the sliding block is further provided with a vertical sliding rail, the bottom of the support frame is provided with a connecting block in threaded connection with the vertical feed screw, and the bottom of the support frame is further provided with a vertical sliding block in sliding connection with the vertical sliding rails.

By adopting the technical scheme, the transverse feeding mechanism is used for driving the positioning assembly to perform transverse feeding movement, the screw motor rotates to drive the transverse feeding screw to rotate, so that the sliding block in threaded connection with the transverse feeding screw moves transversely along the transverse feeding screw, transverse feeding is realized, the longitudinal feeding mechanism is used for driving the positioning assembly to perform longitudinal feeding movement, the adjusting hand wheel is manually rotated by hand to drive the longitudinal feeding screw to rotate, so that the connecting block in threaded connection with the longitudinal feeding screw drives the support frame to move longitudinally along the longitudinal feeding screw, and the workpiece fixed on the support frame is driven to realize longitudinal position adjustment.

The utility model has the beneficial effects that:

1. the flexible grinding head in the grinding head assembly is driven by the rotary driving part to do high-speed rotary motion, a workpiece to be machined is positioned by the positioning assembly, the positioning assembly drives the workpiece to realize transverse and longitudinal feeding through the feeding assembly during working, and then the workpiece is manually rotated so as to realize grinding machining of an inner hole of the workpiece.

2 the flexible grinding head is formed by sequentially sleeving the flexible spacer sleeve and the abrasive paper sleeve on the rod part, then the rod part is driven to rotate by the rotary driving part so as to drive the flexible grinding head to grind a workpiece, and the impact of the workpiece on the grinding head can be well buffered in the contact process of the flexible grinding head formed by the flexible spacer sleeve and the workpiece by utilizing the elastic characteristic of the flexible spacer sleeve, so that the flexible grinding head is not easy to damage, and the service life of the flexible grinding head is longer.

3. According to the utility model, the flexible spacer bush is sleeved on the rod part and then positioned through the lock nut, on one hand, the lock nut can prevent the flexible spacer bush from falling off from the rod part, on the other hand, the lock nut can extrude the flexible spacer bush along the axial direction through the end face, so that the flexible spacer bush is subjected to axial extrusion force, the surface of the flexible spacer bush can bulge outwards under the action of the axial extrusion force, and then the sand paper bush sleeved outside is tightly supported, so that the sand paper bush can be effectively prevented from falling off from the flexible spacer bush, the polishing effect is further ensured, when the sand paper bush needs to be replaced, the lock nut is directly unscrewed, and the surface of the flexible spacer bush can be restored to the initial state after the axial extrusion force is lost, so that the sand paper bush is easier to take down, and the replacement operation is more convenient.

4. According to the utility model, the flexible spacer bush is designed into a hollow structure, so that the middle part of the flexible spacer bush is easier to arch after the end part is axially extruded, and the abrasive paper bush is tensioned, the first positioning surface and the second positioning surface are used for bearing the axial extrusion force of the limiting surface and the lock nut on one hand, and can be used as the connecting part between the flexible spacer bush and the rod part on the other hand, so that the rod part is not in contact with the inner wall surface of the flexible spacer bush, and the flexible spacer bush is easier to arch and deform.

5. According to the utility model, the clearance is formed between the inner wall of the abrasive paper sleeve and the outer wall of the flexible spacer sleeve, so that the abrasive paper sleeve can be conveniently sleeved on the flexible spacer sleeve or taken down from the flexible spacer sleeve, and the replacement operation of the abrasive paper sleeve is more convenient.

6. According to the utility model, the gasket is arranged between the locking nut and the flexible spacer sleeve, so that the stress area of the end part of the flexible spacer sleeve can be effectively increased by the gasket, the stress of the end part of the flexible spacer sleeve is more uniform, the stress direction is always along the axis direction, the damage to the end part of the flexible spacer sleeve or the inward concave stress surface caused by the uneven end part or the over-small stress area of the locking nut is prevented, the flexible spacer sleeve cannot bulge outwards, the sand paper sleeve sleeved outside cannot be tightly supported, and the reliability of the flexible grinding head is further improved by the arrangement of the gasket.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic view of the overall structure of a hole grinder of the present invention.

Fig. 2 is a schematic view of the overall structure of a hole grinder of the present invention.

Fig. 3 is a schematic sectional structure view of a flexible grinding head in a hole grinding machine according to the present invention.

Fig. 4 is a schematic cross-sectional view of a hole grinder according to the present invention.

In the figure, 1, a base; 11. a transverse slide rail; 2. a grinding head assembly; 21. a flexible grinding head; 211. a rod portion; 212. a flexible spacer sleeve; 213. a sand paper sleeve; 214. a limiting surface; 215. a tensioning section; 216. a transition section; 217. a locking section; 218. a first positioning surface; 219. a second positioning surface; 210. a through hole; 22. a rotation driving section; 23. locking the nut; 24. a gasket; 3. a positioning assembly; 31. a support frame; 311. a positioning bar; 312. positioning the roller; 313. positioning holes; 314. connecting blocks; 32. a positioning roller; 33. a support bearing; 4. a feeding assembly; 41. a transverse feeding mechanism; 411. a transverse feed screw; 412. a lead screw motor; 413. a transverse feed screw bearing seat; 414. a slider; 415. a longitudinal slide rail; 416. a longitudinal slide block; 42. a longitudinal feed mechanism; 421. a longitudinal feed screw; 422. a longitudinal feed screw bearing block; 423. adjusting a hand wheel; 5. and (5) a workpiece.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to specific embodiments. It is to be understood that the described embodiments are merely a few embodiments of the utility model, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.

Referring to fig. 1 to 4, a hole grinding machine comprises a base 1, wherein a grinding head assembly 2, a positioning assembly 3 and a feeding assembly 4 are arranged on the base 1, the grinding head assembly 2 is fixed on the base 1, the positioning assembly 3 is fixed on the feeding assembly 4, and the feeding assembly 4 comprises a transverse feeding mechanism 41 and a longitudinal feeding mechanism 42 which are connected with the base 1; the grinding head assembly 2 comprises a flexible grinding head 21 and a rotary driving part 22 for driving the flexible grinding head 21 to rotate, and the flexible grinding head 21 is connected with the rotary driving part 22 and then fixed on the base 1; the positioning assembly 3 comprises a support frame 31 and a positioning roller 32 mounted on the support frame 31, the two positioning rollers 32 are arranged in parallel, a plurality of supporting bearings 33 for supporting the workpiece 5 are arranged on the positioning rollers 32, the flexible grinding head 21 in the grinding head assembly 2 is driven by the rotary driving part 22 to do high-speed rotary motion, the workpiece 5 to be processed is positioned by the positioning assembly 3, and when the positioning assembly 3 works, the positioning component 3 drives the workpiece 5 to realize transverse and longitudinal feeding through the feeding component 4, then the workpiece 5 is manually rotated to realize the grinding processing of the inner hole of the workpiece 5, when in positioning, it is only necessary to place the workpiece 5 on the support bearings 33 on the positioning rollers 32, the workpiece 5 being carried on the positioning bearings 33, more easily rotated, manpower can be saved greatly, the grinding quantity and the grinding speed can be well controlled by the feeding assembly 4, and the processing precision of products is greatly improved.

Further, the flexible grinding stones 21 include: the flexible grinding head comprises a rod part 211, a flexible spacer 212 and a sand paper sleeve 213, one end of the rod part 211 is connected with a rotary driving part 22, the other end of the rod part 211 is connected with the flexible spacer 212, the sand paper sleeve 213 is sleeved on the outer wall of the flexible spacer 212, the flexible spacer 212 and the sand paper sleeve 213 are sequentially sleeved on the rod part 211 to form the flexible grinding head 21, the rod part 211 is driven to rotate by the rotary driving part 22 to drive the flexible grinding head 21 to grind a workpiece 5, and the flexible spacer 212 is made of nylon or rubber and has certain elasticity, so that the impact of the workpiece 5 on the grinding head can be well buffered in the contact process of the flexible grinding head 21 formed by the flexible spacer 212 and the workpiece 5, the flexible grinding head 21 is not easy to damage, and the service life of the flexible grinding head is longer.

Further, the rod portion 211 is connected with the flexible spacer 212 through the lock nut 23, the flexible spacer 212 is positioned through the lock nut 23 after being sleeved on the rod portion 211, on one hand, the lock nut 23 can prevent the flexible spacer 212 from falling off from the rod portion 211, on the other hand, the lock nut 23 can also axially press the flexible spacer 212 through the end face, so that the flexible spacer 212 is pressed by the axial extrusion force, the surface of the flexible spacer 212 is bulged outwards after being pressed by the axial extrusion force, thereby tightly supporting the sand paper sleeve 213 sleeved outside, effectively preventing the sand paper sleeve 213 from falling off from the flexible spacer 212, further ensuring the polishing effect, and when the abrasive paper sleeve 213 needs to be replaced, the locking nut 23 is directly unscrewed, and the surface of the flexible spacer 212 is restored to the initial state after the axial extrusion force is lost, so that the abrasive paper sleeve 213 is easier to take down, and the replacement operation is more convenient.

Furthermore, one end of the rod part 211 connected with the flexible spacer 212 is sequentially provided with a limiting surface 214, a tensioning section 215, a transition section 216 and a locking section 217, the limiting surface 214 is a surface of the rod part 211 connected with the tension section 215, the transition section 216 and the locking section 217 are coaxially and sequentially connected, the diameter of the tension section 215 is larger than that of the transition section 216 and the locking section 217, the locking section 217 is provided with an external thread connected with the locking nut 23, the flexible spacer 212 sequentially passes through the locking section 217 and the transition section 216 and then is sleeved on the tension section 215, one end of the flexible spacer 212 is limited by the limiting surface 214, so that the end of the other end of the flexible spacer 212, which is in contact with the limiting surface 214 when being subjected to axial extrusion force, cannot move, so that the middle part of the flexible spacer 212 can bulge outwards, the transition section 216 is used for connecting the tensioning section 215 and the locking section 217, the locking section 217 is in threaded connection with the locking nut 23 to realize axial extrusion and locking of the flexible spacer 212.

Further, the flexible spacer 212 is of a hollow structure, a first positioning surface 218 and a second positioning surface 219 are respectively arranged at two ends of the flexible spacer 212, through holes 210 matched with the tensioning sections 215 are respectively arranged on the first positioning surface 218 and the second positioning surface 219, the through holes 210 are communicated with an inner cavity of the flexible spacer 212, the axial size of the flexible spacer 212 is larger than that of the tensioning sections 215, the flexible spacer 212 is of a hollow structure, so that the middle of the flexible spacer 212 is easier to arch up after being axially extruded by the end parts to realize tensioning of the abrasive paper sleeve 213, the first positioning surface 218 and the second positioning surface 219 are used for bearing axial extrusion forces of the limiting surface 214 and the locking nut 23, and can be used as a connecting part between the flexible spacer 212 and the rod part 211 to ensure that the rod part 211 is not in contact with the inner wall surface of the flexible spacer 212, and the flexible spacer 212 is easier to arch up and deform, in addition, the flexible spacer 212 is hollow, so that raw materials can be saved, the cost is reduced, and two purposes are achieved at one stroke.

Further, abrasive paper cover 213 is the tubular structure, abrasive paper cover 213 cover is established and is had the clearance between the inner wall of back abrasive paper cover 213 and the outer wall of flexible spacer 212 on flexible spacer 212, has the clearance between the inner wall of abrasive paper cover 213 and the outer wall of flexible spacer 212 for the cover that abrasive paper cover 213 can be convenient is established on flexible spacer 212 or is taken off from flexible spacer 212, and consequently, it is more convenient that the operation is changed to abrasive paper cover 213.

Further, still be equipped with packing ring 24 between lock nut 23 and the flexible spacer 212, the diameter of packing ring 24 is greater than lock nut 23's diameter, and the atress area of flexible spacer 212 tip can effectively be increased in packing ring 24's effect for flexible spacer 212 tip atress is more even, and the atress direction is along the axis direction all the time, prevents to cause flexible spacer 212 tip damage or atress face indent because of lock nut 23 tip is uneven or the atress area undersize, thereby leads to flexible spacer 212 can't outwards bulge, thereby can't prop the abrasive paper cover 213 of cover outside tightly, the setting of packing ring 24 has further improved the reliability of flexible bistrique 21.

Furthermore, a positioning strip 311 for axially positioning the workpiece 5 and a positioning roller 312 installed on the positioning strip 311 are arranged at the front and the rear of the support frame 31, the positioning strip 311 is fixed on the support frame 31, a plurality of positioning holes 313 are arranged on the positioning strip 311, the positioning roller 312 is connected with the positioning holes 313 on the positioning strip 311 through a roller rotating shaft, positioning of workpieces 5 with different sizes can be realized by arranging the plurality of positioning holes 313 on the positioning strip 311, and the universality of the device is further improved.

Further, the transverse feeding mechanism 41 includes a transverse feeding screw 411 located on the base 1 and a screw motor 412 driving the transverse feeding screw 411 to rotate, the transverse feeding screw 411 is parallel to the axis of the rod portion 211, two ends of the transverse feeding screw 411 are respectively installed on the base 1 through a transverse feeding screw bearing seat 413, one end of the transverse feeding screw 411 is connected with the screw motor 412, a slider 414 is arranged on the transverse feeding screw 411, the slider 414 is in threaded connection with the transverse feeding screw 411, two ends of the slider 414 are in sliding connection with the transverse sliding rail 11 on the base 1, the longitudinal feeding mechanism 42 is installed on the slider 414, the longitudinal feeding mechanism 42 includes a longitudinal feeding screw 421 perpendicular to the transverse feeding screw 411, the longitudinal feeding screw is installed on the slider 414 through a longitudinal feeding screw bearing seat 422, and one end of the longitudinal feeding screw 421 is provided with an adjusting hand wheel 423, the sliding block 414 is further provided with a longitudinal sliding rail 415, the bottom of the supporting frame 31 is provided with a connecting block 314 in threaded connection with a longitudinal feed screw 421, the bottom of the supporting frame 31 is further provided with a longitudinal sliding block 416 slidably connected with a longitudinal sliding rail 415, the transverse feeding mechanism 41 is used for driving the positioning assembly 3 to perform transverse feeding movement, the screw motor 412 rotates to drive the transverse feeding screw 411 to rotate, so that the slider 414 threadedly coupled to the infeed screw 411 moves laterally along the infeed screw 411, thereby realizing transverse feeding, the longitudinal feeding mechanism 42 is used for driving the positioning component 3 to carry out longitudinal feeding movement, the adjusting hand wheel 423 is manually rotated by hand, the longitudinal feeding screw 421 is driven to rotate, therefore, the connecting block 314 in threaded connection with the longitudinal feed screw 421 drives the support frame 31 to move longitudinally along the longitudinal feed screw 421, and thus the workpiece 5 fixed on the support frame 31 is driven to realize longitudinal position adjustment.

The working principle of the utility model is as follows: the workpiece 5 to be machined is placed on the supporting bearing 33 on the positioning roller 32, axial positioning is realized through the positioning roller 312, the adjusting hand wheel 423 is manually rotated by hand to drive the longitudinal feed screw 421 to rotate, so that the connecting block 314 in threaded connection with the longitudinal feed screw 421 drives the support frame 31 to longitudinally move along the longitudinal feed screw 421, the workpiece 5 fixed on the support frame 31 is driven to realize longitudinal position adjustment, the flexible grinding head 21 is in contact with the inner wall of the workpiece 5, the screw motor 412 is started, the screw motor 412 rotates to drive the transverse feed screw 411 to rotate, so that the slider 414 in threaded connection with the transverse feed screw 411 drives the upper positioning device 3 to transversely move along the transverse feed screw 411, transverse feeding is realized, meanwhile, the workpiece 5 is manually and continuously rotated, grinding machining of the inner hole of the workpiece 5 is realized, and during positioning, the workpiece 5 is supported on the positioning bearing 33, so that the workpiece is easier to rotate, labor can be greatly saved, and in addition, the transverse feeding mechanism 41 and the longitudinal feeding mechanism 42 in the feeding assembly 4 can well control the grinding amount and the grinding speed, so that the processing precision of products is greatly improved.

Claims

1. A hole grinding machine is characterized in that: the grinding head feeding device comprises a base (1), wherein a grinding head assembly (2), a positioning assembly (3) and a feeding assembly (4) are arranged on the base (1), the grinding head assembly (2) is fixed on the base (1), the positioning assembly (3) is fixed on the feeding assembly (4), and the feeding assembly (4) comprises a transverse feeding mechanism (41) and a longitudinal feeding mechanism (42) which are connected with the base (1);

the grinding head assembly (2) comprises a flexible grinding head (21) and a rotary driving part (22) for driving the flexible grinding head (21) to rotate, and the flexible grinding head (21) is connected with the rotary driving part (22) and then fixed on the base (1);

locating component (3) include support frame (31) and install registration roller (32) on support frame (31), registration roller (32) have two, two registration roller (32) parallel arrangement, be equipped with a plurality of support bearing (33) that are used for supporting work piece (5) on registration roller (32).

2. A hole grinder as set forth in claim 1, wherein: the flexible grinding head (21) comprises: including pole portion (211), flexible spacer (212) and abrasive paper cover (213), the one end and the rotation driving portion (22) of pole portion (211) are connected, the other end and the flexible spacer (212) of pole portion (211) are connected, abrasive paper cover (213) cover is established on the outer wall of flexible spacer (212).

3. A hole grinder as set forth in claim 2, wherein: the rod part (211) is connected with the flexible spacer bush (212) through a locking nut (23).

4. A hole grinder as set forth in claim 3, wherein: one end of the rod portion (211) connected with the flexible spacer (212) is sequentially provided with a limiting surface (214), a tensioning section (215), a transition section (216) and a locking section (217), the limiting surface (214) is a surface of the rod portion (211) connected with the tensioning section (215), the transition section (216) and the locking section (217) are coaxial and sequentially connected, the diameter of the tensioning section (215) is larger than that of the transition section (216) and the locking section (217), and the locking section (217) is provided with an external thread connected with a locking nut (23).

5. A hole grinder as set forth in claim 4, wherein: the flexible spacer bush (212) is of a hollow structure, a first positioning surface (218) and a second positioning surface (219) are arranged at two ends of the flexible spacer bush (212) respectively, through holes (210) matched with the tensioning sections (215) are formed in the first positioning surface (218) and the second positioning surface (219) respectively, the through holes (210) are communicated with an inner cavity of the flexible spacer bush (212), and the axial size of the flexible spacer bush (212) is larger than that of the tensioning sections (215).

6. A hole grinder as set forth in claim 5, wherein: the sand paper sleeve (213) is of a cylindrical structure, and a gap is formed between the inner wall of the sand paper sleeve (213) and the outer wall of the flexible spacer sleeve (212) after the sand paper sleeve (213) is sleeved on the flexible spacer sleeve (212).

7. A hole grinder as set forth in claim 3, wherein: and a washer (24) is further arranged between the locking nut (23) and the flexible spacer bush (212), and the diameter of the washer (24) is larger than that of the locking nut (23).

8. A hole grinder as set forth in claim 1, wherein: all be equipped with around support frame (31) and be used for carrying out axial positioning's location strip (311) and install location gyro wheel (312) on location strip (311) to work piece (5), location strip (311) are fixed on support frame (31), be equipped with a plurality of locating holes (313) on location strip (311), location gyro wheel (312) are connected through locating hole (313) on gyro wheel pivot and location strip (311).

9. A hole grinder as set forth in claim 1, wherein: the transverse feeding mechanism (41) comprises a transverse feeding screw rod (411) positioned on the base (1) and a screw rod motor (412) driving the transverse feeding screw rod (411) to rotate, the transverse feeding screw rod (411) is parallel to the axis of the rod part (211), two ends of the transverse feeding screw rod (411) are respectively installed on the base (1) through a transverse feeding screw rod bearing seat (413), and one end of the transverse feeding screw rod (411) is connected with the screw rod motor (412).

10. A hole grinder as set forth in claim 9, wherein: a sliding block (414) is arranged on the transverse feed screw rod (411), the sliding block (414) is in threaded connection with the transverse feed screw rod (411), two ends of the sliding block (414) are connected with a transverse sliding rail (11) on the base (1) in a sliding way, the longitudinal feeding mechanism (42) is arranged on the sliding block (414), the longitudinal feeding mechanism (42) comprises a longitudinal feed screw (421) which is perpendicular to the transverse feed screw (411), the longitudinal feed screw (421) is arranged on the sliding block (414) through a longitudinal feed screw bearing seat (422), one end of the longitudinal feed screw (421) is provided with an adjusting hand wheel (423), the sliding block (414) is also provided with a longitudinal sliding rail (415), the bottom of the supporting frame (31) is provided with a connecting block (314) in threaded connection with a longitudinal feed screw (421), the bottom of the support frame (31) is also provided with a longitudinal sliding block (416) which is connected with the longitudinal sliding rail (415) in a sliding way.